CN216529587U

CN216529587U - High-power wiring terminal

Info

Publication number: CN216529587U
Application number: CN202123032105.XU
Authority: CN
Inventors: 蔡鹏�; 林剑辉; 王涛
Original assignee: Dongguan Shangli Electronic Technology Co ltd
Current assignee: Dongguan Shangli Electronic Technology Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-05-13
Anticipated expiration: 2031-11-30

Abstract

The utility model provides a high-power wiring terminal which comprises an insulated mounting base and a plurality of conductive terminals, wherein each conductive terminal comprises a wiring terminal fixed in the mounting base and used for fixing a wire, and a welding end extending out of the mounting base and used for being welded with a PCB (printed circuit board), the wiring terminal is provided with a wire hole for accommodating the wire and a wire locking screw for locking the wire, and the bottom end surface of the wire locking screw, which is in contact with the wire, is an arc surface with basically the same radian as the inner wall of the wire hole. The bottom face of the locking screw is an arc face matched with the inner wall of the wire hole, and the arc face at the bottom end of the locking screw uniformly extrudes a copper wire bundle of the wire in the process of locking the wire, so that the stress of the copper wire bundle is uniform and cannot be cut.

Description

High-power wiring terminal

Technical Field

The utility model relates to the technical field of electric connection terminals, in particular to a high-power electric connection terminal used for sound equipment and other products.

Background

In equipment such as high-power automobile audio equipment, a high-power wiring terminal for power supply connection has a large load, and the requirements on the load capacity and stability of the wiring terminal are high. The structure of the conventional wiring terminal for the automobile audio power supply comprises an installation base and a plurality of conductive terminals fixed on the installation base, wherein the conductive terminals are fixed with electric wires in a screw locking mode, but the connection part of the electric wires and the conductive terminals can be broken frequently due to large vibration during use, and broken copper wires of the electric wires can enter an internal circuit to cause short circuit and other faults. On the other hand, because the load of conductive terminal is great for its volume is also great, and not only its dead weight leads to easily that the welding end is not hard up, and product cost is higher moreover.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-power wiring terminal which is reliable in connection and lower in cost.

In order to realize the purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a high-power binding post, includes insulating mounting base to and a plurality of conductive terminal, conductive terminal is including being fixed in the mounting base is used for fixed electric wire's wiring end, and stretches out the mounting base is used for the welding end with PCB board welded outward, the wiring end has the line hole of holding electric wire to and the locking screw of locking electric wire, the bottom end face of locking screw and electric wire contact be with the arc surface that the line hole inner wall has the same radian basically.

In a preferred embodiment, the working surfaces of the terminal and the welding end are perpendicular to each other, and the welding end has a connecting section with a chamfered top surface from the mounting base to the welding surface of the welding end. Furthermore, a plurality of grooves arranged in parallel are arranged on the oblique cutting surface of the connecting section. Furthermore, the welding surface of the welding end is provided with a screw hole used for locking the PCB and the welding end. Furthermore, the welding end has a plurality of welding feet that are the protrusion of matrix distribution in the face of weld, it has a plurality of sunken inner counter bores in the face of weld to distribute in the clearance space of welding foot.

In a preferred embodiment, the wire locking screw vertically penetrates through the wire hole, and when the wire locking screw is locked into the bottommost end, the matching length of at least three threads is still provided between the wire locking screw and the wiring terminal.

According to a preferable scheme, the mounting base comprises a frame-shaped mounting surface and a plurality of mounting cavities perpendicular to the mounting surface and used for containing the wiring terminals, and first through holes corresponding to the wire holes and second through holes corresponding to the wire locking screws are formed in the wall of each mounting cavity. Furthermore, the conductive terminal and the mounting base are formed into an integral structure through injection molding.

The beneficial effects are that: the bottom face of the locking screw is an arc face matched with the inner wall of the wire hole, and the arc face at the bottom end of the locking screw uniformly extrudes a copper wire bundle of the wire in the process of locking the wire, so that the stress of the copper wire bundle is uniform and cannot be cut.

Drawings

The present invention will be described in further detail with reference to the following drawings and specific examples.

Fig. 1 is a first perspective view of a first type of terminal in an embodiment;

FIG. 2 is a schematic view of the conductive terminal shown in FIG. 1;

FIG. 3 is a schematic view of the lockwire screw of FIG. 1;

fig. 4 is a second perspective view of the first type of terminal in the embodiment;

FIG. 5 is a schematic structural view of the mounting base of FIG. 1;

fig. 6 is a perspective view of a second type of terminal in the embodiment.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

referring to fig. 1 to 6, the present embodiment is illustrated as a high power connection terminal for connecting a power supply of an automobile audio, which includes an insulative mounting base 1 and a plurality of conductive terminals 2. The conductive terminal 2 comprises a terminal 21 fixed in the mounting base 1 and used for fixing a wire, and a welding end 22 extending out of the mounting base 1 and used for welding with a PCB, wherein the terminal 21 is provided with a wire hole 211 for accommodating the wire and a wire locking screw 23 for locking the wire, and the bottom end surface of the wire locking screw 23 in contact with the wire is an arc surface 231 with a radian basically the same as that of the inner wall of the wire hole 211.

When the mounting base is used, the mounting base 1 is fixedly locked on a shell of the sound equipment, one side, corresponding to the wiring terminal 21, of the mounting base 1 is exposed out of the sound equipment, the wire hole 211 is used for being connected with an electric wire of a power supply, and the welding terminal 22 of the wiring terminal is located in the sound equipment and used for being inserted and welded on a PCB (printed circuit board) of the sound equipment. The bottom end face of the wire locking screw 23 is the arc face 231 matched with the inner wall of the wire hole 211, and in the process of locking the wire, the arc face 231 at the bottom end of the wire locking screw 23 uniformly extrudes the copper wire harness of the wire, so that the stress of the copper wire harness is uniform and cannot be cut.

In a preferred implementation structure of the connection terminal, the working surfaces of the terminal 21 and the welding end 22 are perpendicular to each other, that is, the end surface of the terminal 21 and the welding surface of the welding end 22 are perpendicular to each other; the welding end 22 has a connecting section 221 with a chamfered top surface 2211 from the mounting base 1 to the welding surface of the welding end 22. On the premise of ensuring the load capacity and the installation size, the chamfered surface 2211 of the connecting section 221 can reduce the volume of the conductive terminal 2, reduce the product cost, reduce the weight of the wiring terminal and have stronger vibration resistance. Further, the chamfered surface 2211 of the connecting section 221 has a plurality of grooves 2212 arranged in parallel. The grooves 2212 can further reduce the weight, the heat dissipation surface area of the exposed part of the wiring terminal can be increased, and the heat dissipation capacity is stronger. The grooves 2212 may be a plurality of parallel circular arc grooves or triangular grooves, or transversely distributed, or longitudinally distributed, or cross distributed, or may be other recessed structures, such as pits uniformly distributed on the surface, etc. Further, the soldering terminal 22 has a screw hole 2213 on the soldering surface for locking the PCB board to the soldering terminal 22. Set up screw 2213, can be fixed with welding end 22 through the screw with the PCB board, further strengthened connection structure, avoid the fillet loosening to lead to contact failure. Further, the welding end 22 has a plurality of welding feet 2214 protruding from the welding surface and distributed in a matrix manner, and a plurality of inner counter bores 2215 recessed from the welding surface are distributed in the gap space of the welding feet 2214. The inner counterbore 2215 not only can further reduce the weight, but also can increase the heat dissipation surface area.

In a preferred embodiment, the wire locking screw 23 vertically penetrates the wire hole 211, and when the wire locking screw 23 is locked at the bottom end, the wire locking screw 23 and the terminal 21 still have a matching length of at least three threads. The locking wire screw 23 and the wiring terminal 21 are long in matching length, so that the locking wire screw 23 cannot deflect and loosen after being locked, and stability is further improved.

The mounting base 1 is a preferred implementation structure, the mounting base 1 includes a frame-shaped mounting surface 11, and a plurality of mounting cavities 12 perpendicular to the mounting surface 11 for accommodating the terminals 21, and the walls of the mounting cavities 12 have first through holes 13 corresponding to the wire holes 211 and second through holes 14 corresponding to the wire locking screws 23. Further, the conductive terminal 2 and the mounting base 1 are formed into an integral structure through injection molding. The mounting base 1 covers the terminal 21 of the conductive terminal 2 inside, so that the surface oxidation, short circuit or interference of the terminal 21 can be avoided. And the injection molding and integral molding ensures the reliability of the structure. In other embodiments, the terminal 21 may be exposed, and the mounting base 1 may be fixed with the conductive terminal 2 by snap-fitting, but the reliability is slightly poor.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A high-power wiring terminal is characterized in that: the conductive terminals comprise wiring ends which are fixed in the mounting base and used for fixing electric wires and welding ends which stretch out of the mounting base and used for being welded with a PCB, the wiring ends are provided with wire holes for containing the electric wires and wire locking screws for locking the electric wires, and the bottom end surfaces of the wire locking screws, which are in contact with the electric wires, are arc surfaces with the same radian as the inner walls of the wire holes.

2. A high power terminal according to claim 1, wherein: the wiring end with the working face mutually perpendicular of welding end, the welding end is followed the mounting base extremely the welding face of welding end has a connecting section that a section top surface is the scarf.

3. A high power terminal according to claim 2, wherein: the oblique cutting surface of the connecting section is provided with a plurality of grooves which are arranged in parallel.

4. A high power terminal according to claim 3, wherein: and the welding surface of the welding end is provided with a screw hole for locking the PCB with the welding end.

5. A high power terminal according to claim 4, wherein: the welding end is provided with a plurality of welding feet which are distributed in a matrix and protrude out of the welding surface, and a plurality of inner counter bores which are sunken in the welding surface are distributed in the clearance space of the welding feet.

6. A high power terminal according to claim 1, wherein: the locking wire screw vertically penetrates through the wire hole, and when the locking wire screw is locked at the bottom end, the matching length of at least three threads is still formed between the locking wire screw and the wiring terminal.

7. A high power terminal according to claim 1, wherein: the mounting base comprises a frame-shaped mounting surface and a plurality of mounting cavities perpendicular to the mounting surface and used for containing the wiring terminals, and first through holes corresponding to the wire holes and second through holes corresponding to the wire locking screws are formed in the wall of each mounting cavity.

8. A high power terminal according to claim 7, wherein: the conductive terminal and the mounting base are formed into an integral structure through injection molding.