CN219659107U

CN219659107U - High-current shunt copper bar connector

Info

Publication number: CN219659107U
Application number: CN202321046136.7U
Authority: CN
Inventors: 胡光才; 李睿鑫
Original assignee: Dongguan Weikang Auto Electronics Co ltd
Current assignee: Dongguan Weikang Auto Electronics Co ltd
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2023-09-08
Anticipated expiration: 2033-04-28

Abstract

The utility model discloses a high-current shunt copper bar connector, which comprises: a plastic case having a pair of slots; the copper bar comprises a guide plate, a terminal part formed by bending upwards along one end of the guide plate and a plurality of shunt welding feet formed by bending downwards along the other end of the guide plate, and all the shunt welding feet are connected with the PCB in a guiding way so as to realize heavy current shunt; one end of the guide plate, which is provided with a terminal part, is assembled with the plastic shell, and the terminal part is exposed in the pair of inserting grooves to form the connector. The copper bar is connected with the terminal of the connector into a whole, the structure is stable, the copper bar and the terminal of the connector are fixedly connected in a mode of no need of bolts or welding, the structure is simpler, and the assembly is more convenient; and the later stage only needs to weld the shunt welding leg which is fixedly inserted with the PCB once, so that the large current can be shunted to the area required by the PCB, the material and labor cost are reduced, and other unreliable connecting devices are not needed, so that the utility model can realize stable large current transmission.

Description

High-current shunt copper bar connector

Technical field:

the utility model relates to the technical field of connector products, in particular to a high-current shunt copper bar connector.

The background technology is as follows:

with the high-speed development of new energy automobiles, various domain controllers, ECU integration, high-current power supply, high-current conversion and high-current quick charging all provide higher requirements on the power supply current of each module, and under a 12V-48V voltage platform, the single PIN current carrying capacity needs to reach 150A-300A, and the international standard of automobile standard class (USCAR, LV 214) low-voltage connectors is required to be met.

The large current input to the domain controller by the connector needs to be shunted to each functional area of the controller, and the conventional method comprises the following two steps:

the first method is to directly shunt with a PCB conductive copper film, and the calculation formula is as follows:

I＝K△T ^0.44 A ^0.725

wherein I is current, A is cross-sectional area, and DeltaT is temperature.

The line width of the outer layer of the PCB reaches 303.2mm under the conditions that the current is calculated by the formula, the current is 150A, the single-sided PCB is assumed, the surface wiring is carried out, and the copper thickness is 0.015mm, and even if the double-sided wiring is carried out, the line width of the outer layer reaches 150mm, so that the effective area of the PCB is occupied greatly, and the PCB is unfavorable for the layout of electronic components of the PCB.

The second method is to replace the PCB wiring with a copper bar (bus bar), but one end of the copper bar needs to be reliably connected to the connector, and the other end of the copper bar is reliably connected to the connector or the PCB by bolts or welding, specifically, the copper bar 100 in the prior art has a structure as shown in fig. 1, the copper bar 100 includes a main body 101, a first conductive part 102 bent and formed at the upper end of the main body 101, and a plurality of second conductive parts 103 bent and formed at the lower end of the main body 101, the first conductive part 102 is provided with a first hole site 104, a screw passes through the first hole site 104 to lock the first conductive part 102 with the terminal of the connector, the second conductive part 103 is provided with a second hole site 105, and the screw passes through the second hole site 104 to lock the second conductive part 102 with the PCB, thereby achieving the purpose of conductive connection, but the copper bar 100 has a complex connection structure, increases the material and labor costs, and risks of unreliable connection and poor contact at the connection area.

In view of this, the present inventors have proposed the following means.

The utility model comprises the following steps:

the utility model aims to overcome the defects of the prior art and provides a high-current shunt copper bar connector.

In order to solve the technical problems, the utility model adopts the following first technical scheme: the high-current shunt copper bar connector comprises: a plastic case having a pair of slots; the copper bar comprises a guide plate, a terminal part formed by bending upwards along one end of the guide plate and a plurality of shunt welding feet formed by bending downwards along the other end of the guide plate, and all the shunt welding feet are connected with the PCB in a guiding way so as to realize heavy current shunt; one end of the guide plate, which is provided with a terminal part, is assembled with the plastic shell, and the terminal part is exposed in the pair of inserting grooves to form the connector.

Furthermore, in the above technical scheme, the end of the split welding leg connected with the guide plate is further formed with a supporting table, the supporting table is provided with a supporting plane in butt joint with the PCB, and the supporting plane is flush with the lower end surface of the plastic shell, so that after the split welding leg is fixedly installed and connected with the PCB, a space is formed between the guide plate and the PCB.

Furthermore, in the above technical solution, the plastic housing is provided with a terminal slot extending through the opposite slot along the lower end surface thereof, the terminal portion is disposed in the terminal slot in a penetrating manner from bottom to top, and the upper portion of the terminal portion is exposed in the opposite slot.

Furthermore, in the above technical scheme, barbs are formed on two sides of the lower end of the terminal portion, and the barbs are clamped and positioned with the inner wall of the terminal groove.

Furthermore, in the above technical solution, the lower end surface of the plastic shell is further provided with a mounting groove penetrating through the outer side surface of the plastic shell and the terminal groove, and one end of the guide plate connected with the terminal part is clamped in the mounting groove.

Furthermore, in the above technical scheme, the two sides of the end of the guide plate connected with the terminal portion are bent to form functional soldering legs protruding downwards, and the functional soldering legs are fixed with the PCB in an inserting manner and form a guide connection to realize heavy current diversion.

Furthermore, in the above technical scheme, the convex seats are formed on two sides of the lower end of the plastic shell, the convex seats are also fixedly provided with T-shaped fixing feet in an inserting manner, and the lower ends of the fixing feet protrude out of the lower end face of the plastic shell.

Furthermore, in the above technical scheme, positioning pins protruding downwards are formed on two sides of the lower end face of the plastic shell.

Furthermore, in the above technical scheme, the number of the copper bars is two, the terminal parts of the two copper bars are arranged in the plastic shell in parallel and are exposed in the opposite inserting groove, and the split welding pins of the two copper bars are distributed outside the plastic shell.

In order to solve the technical problems, the utility model adopts the following second technical scheme: the high-current shunt copper bar connector comprises: a first plastic case having a first pair of slots; a second plastic shell provided with a second pair of slots; the copper bar comprises a guide plate, a first terminal part and a second terminal part, wherein the first terminal part and the second terminal part are upwards bent and formed at two ends of the guide plate, a plurality of first shunt welding pins protruding downwards are bent and formed at the position, close to the first terminal part, of the guide plate, a plurality of second shunt welding pins protruding downwards are bent and formed at the position, close to the second terminal part, of the guide plate, and the first terminal part is arranged in a first plastic shell, is exposed in a first pair of slots and forms a first connector; the second terminal part is arranged in the second plastic shell and exposed in the second pair of slots, and forms a second connector; the first shunt welding leg and the second shunt welding leg are both connected with the PCB in a guiding mode so as to realize large-current shunt.

By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects: the terminal part formed by bending the copper bar is directly used as the terminal of the connector, namely, the copper bar and the terminal of the connector are connected into a whole, the structure is stable, the copper bar and the terminal of the connector are fixedly connected in a mode of no need of bolts or welding, the structure is simpler, and the assembly is more convenient; and the later stage only needs to weld the shunt welding leg which is fixedly inserted with the PCB once, so that the large current can be shunted to the area required by the PCB, the material and labor cost are reduced, and other unreliable connecting devices are not needed, so that the utility model can realize stable large current transmission.

Description of the drawings:

FIG. 1 is a perspective view of a prior art copper bar;

FIG. 2 is a perspective view of a first embodiment of the present utility model;

FIG. 3 is a perspective view of an alternative embodiment of the present utility model;

FIG. 4 is an exploded perspective view of a first embodiment of the present utility model;

FIG. 5 is a perspective view of a copper bar according to a first embodiment of the present utility model;

FIG. 6 is a perspective view of a plastic housing in accordance with an embodiment of the present utility model;

fig. 7 is a perspective view of a first embodiment of the present utility model assembled with a PCB;

FIG. 8 is a block diagram of a second embodiment of the present utility model;

fig. 9 is a perspective view of a third embodiment of the present utility model;

fig. 10 is a perspective view of a third alternative view of an embodiment of the present utility model.

The specific embodiment is as follows:

the utility model will be further described with reference to specific examples and figures.

Embodiment one:

referring to fig. 2-7, a high current shunt copper bar connector is provided, which comprises: a plastic shell 1 and a copper bar 2, wherein the plastic shell 1 is provided with a counter slot 11; the copper bar 2 comprises a guide plate 21, a terminal part 22 formed by bending upwards along one end of the guide plate 21 and a plurality of shunt welding feet 23 formed by bending downwards along the other end of the guide plate 21, wherein all the shunt welding feet 23 are used for conducting connection with the PCB200 so as to realize heavy current shunt; when assembled, one end of the deflector 21 having the terminal portion 22 is assembled with the plastic housing 1, and the terminal portion 22 is exposed in the pair of slots 11, and constitutes the connector 10. That is, the terminal portion 22 formed by bending the copper bar 2 is directly used as the terminal of the connector 10, that is, the copper bar 2 and the terminal of the connector 10 are connected into a whole, so that the structure is stable, the copper bar and the terminal are fixedly connected in a mode of no need of bolts or welding, the structure is simpler, and the assembly is more convenient; and the later stage only needs to weld the shunt soldering leg 23 which is fixedly inserted with the PCB200 once, so that the large current can be shunted to the required area of the PCB200, the material and labor cost is reduced, and other unreliable connecting devices are not needed, so that the utility model can realize stable large current transmission.

The concrete assembly structure of the plastic shell 1 and the copper bar 2 is as follows:

the plastic shell 1 is provided with a terminal groove 12 penetrating through the opposite slot 11 along the lower end surface thereof, the terminal part 22 is penetrated in the terminal groove 12 from bottom to top, and the upper part of the terminal part 22 is exposed in the opposite slot 11. Wherein, barb 221 is all formed to terminal portion 22 lower extreme both sides, and this barb 221 is held the location with terminal groove 12 inner wall card, once guarantees that terminal portion 22 stably exposes in opposite directions slot 11, can prevent effectively that terminal portion 22 is unexpected to break away from terminal groove 12, has guaranteed assembly structure stability, promotes the product quality.

In order to ensure that the assembly of the plastic shell 1 and the copper bar 2 is more stable, the terminal part 22 is more stably arranged in the plastic shell 1, and the following design is also made: the lower end face of the plastic shell 1 is further provided with a mounting groove 13 penetrating through the outer side face of the plastic shell and the terminal groove 12, one end, connected with the terminal part 22, of the guide plate 21 is clamped in the mounting groove 13, and in assembly, one end, connected with the terminal part 22, of the guide plate 21 is pressed into the mounting groove 13 and is clamped and fixed between the guide plate and the terminal part 22, so that stability of an assembly structure between the guide plate 21 and the terminal part 22 is further ensured.

The lower end of the plastic shell 1 is assembled and fixed with the PCB200, wherein the two sides of the lower end of the plastic shell 1 are both formed with a boss 14, the boss 14 is further provided with a T-shaped fixing leg 15 in a plug-in manner, the lower end of the fixing leg 15 protrudes out of the lower end face of the plastic shell 1 and is inserted into the PCB200, and the plastic shell 1 is stably positioned on the PCB200 by welding and fixing. In order to further increase the stability of the assembly of the plastic housing 1 and the PCB200, positioning pins 16 protruding downwards are formed on both sides of the lower end surface of the plastic housing 1, and the positioning pins 16 are embedded into positioning holes of the PCB200, so as to realize positioning assembly.

The two sides of the end of the guide plate 21 connected with the terminal portion 22 are bent to form a functional soldering leg 211 protruding downwards, and the functional soldering leg 211 is fixed with the PCB200 in an inserting manner, and forms a guide connection to realize large current diversion. That is, the functional solder pins 211 are located at the side of the lower end of the terminal portion 22, and after being inserted and fixed with the PCB200, not only the entire copper bar and the plastic case can be more stably positioned on the PCB200, but also the functional solder pins 211 can realize a large current shunting function.

In addition, the end of the split welding leg 23 connected with the guide plate 21 is further formed with a supporting table 231, the supporting table 231 is provided with a supporting plane 232 abutted with the PCB200, and the supporting plane 232 is flush with the lower end surface of the plastic shell 1, so that after the split welding leg 23 is fixedly installed and connected with the PCB200, a space is formed between the guide plate 21 and the PCB200, the guide plate 21 is prevented from being contacted with the PCB200, better heat dissipation is realized by air circulation, and welding of the split welding leg 23 is facilitated.

In summary, the terminal portion 22 formed by bending the copper bar 2 is directly used as the terminal of the connector 10, that is, the copper bar 2 and the terminal of the connector 10 are connected into a whole, so that the structure is stable, the copper bar 2 and the terminal are fixedly connected without bolts or welding, the structure is simpler, and the assembly is more convenient; and the later stage only needs to weld the shunt soldering leg 23 which is fixedly inserted with the PCB200 once, so that the large current can be shunted to the required area of the PCB200, the material and labor cost is reduced, and other unreliable connecting devices are not needed, so that the utility model can realize stable large current transmission.

Embodiment two:

the second embodiment is different from the first embodiment in that: as shown in fig. 8, the number of the copper bars 2 is two, the terminal portions 22 of the two copper bars 2 are installed in the plastic housing 1 in parallel and exposed in the opposite slots 11 to form a dual-core connector with the two terminal portions 22, the split solder feet 23 of the two copper bars 2 are distributed outside the plastic housing 1, and all the split solder feet 23 are used for being connected with the PCB200 in a guiding manner, so as to realize heavy current split, thereby meeting different use requirements. Of course, the number of the copper bars 2 may be plural, and the terminal portions 22 of the copper bars 2 are all mounted in the plastic housing 1 and exposed in the opposite slots 11 to form a multi-core connector having plural terminal portions 22.

Other structures of the second embodiment are the same as those of the first embodiment except for the above differences, and have technical effects achieved by the other structures of the first embodiment.

Embodiment III:

referring to fig. 9-10, a high current shunt copper bar connector is shown, comprising: a first plastic case 3, a second plastic case 4 and a copper bar 2, wherein the first plastic case 3 is provided with a first pair of slots 31; the second plastic housing 4 is provided with a second pair of slots 41; the copper bar 2 comprises a guide plate 21, a first terminal part 24 and a second terminal part 25 which are bent and formed at two ends of the guide plate 21 upwards, wherein a plurality of first diversion welding feet 26 which protrude downwards are bent and formed at positions, close to the first terminal part 24, of the guide plate 21, a plurality of second diversion welding feet 27 which protrude downwards are bent and formed at positions, close to the second terminal part 25, of the guide plate 21, and the first terminal part 24 is arranged in the first plastic shell 3 and exposed in the first pair of slots 31 to form a first connector; the second terminal portion 25 is mounted in the second plastic housing 4 and exposed in the second pair of slots 41, and forms a second connector; the first shunt soldering leg 26 and the second shunt soldering leg 27 are both connected with the PCB in a guiding way so as to realize the large current shunt.

That is, the copper bar 2 in this embodiment is bent and formed with the first terminal portion 24 and the second terminal portion 25, and the first terminal portion 24 and the second terminal portion 25 are respectively in the first plastic shell 3 and the second plastic shell 4 to respectively form the first connector and the second connector, that is, the first terminal portion 24 and the second terminal portion 25 of the copper bar 2 are respectively used as the terminal of the first connector and the terminal of the second connector, which are in an integral structure, the structure is extremely stable, and the first terminal portion 24 and the second terminal portion 25 are fixedly connected without bolts or welding, so that the structure is simpler, and the assembly is more convenient; and the first shunt welding leg 26 and the second shunt welding leg 27 which are fixedly spliced with the PCB are only required to be welded once in the later stage, so that large current can be shunted to the required area of the PCB, the material and labor cost are reduced, and other unreliable connecting devices are not needed, so that the utility model can realize stable large current transmission.

When the PCB is used, the first connector is used as a high-current input port, and the first shunt welding pin 26 below the first connector can be welded and fixed with the PCB and also provides current for the area of the PCB below the first connector; the first shunt solder leg 26 is connected to the second connector by the integral copper bar 2; the second shunt solder feet 27 under the second connector not only can be welded and fixed with the PCB, but also can supply current to the area of the PCB under the second connector; or the second connector can output power outwards at the same time, so that the power supply function of other modules can be met; in addition, the first connector and the second connector can also supply power in a reverse high current way so as to meet different use requirements.

The assembly structure of the first plastic housing 3 and the PCB, and the assembly structure of the second plastic housing 4 and the PCB are the same as the assembly structure of the plastic housing 1 and the PCB in the first embodiment, and will not be described in detail herein.

It is understood that the foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, but rather is to be accorded the full scope of all such modifications and equivalent structures, features and principles as set forth herein.

Claims

1. The utility model provides a heavy current reposition of redundant personnel copper bar connector which characterized in that: it comprises the following steps:

a plastic case (1) having a pair of slots (11);

the copper bar (2) comprises a guide plate (21), a terminal part (22) formed by bending upwards along one end of the guide plate (21) and a plurality of shunt welding feet (23) formed by bending downwards along the other end of the guide plate (21), and all the shunt welding feet (23) are connected with the PCB in a guiding way so as to realize heavy current shunt;

one end of the guide plate (21) with the terminal part (22) is assembled with the plastic shell (1), and the terminal part (22) is exposed in the pair of inserting grooves (11) to form the connector (10).

2. The high current diverting copper bar connector according to claim 1, wherein: one end of the shunt welding leg (23) connected with the guide plate (21) is further provided with a supporting table (231), the supporting table (231) is provided with a supporting plane (232) in butt joint with the PCB, the supporting plane (232) is flush with the lower end face of the plastic shell (1), and after the shunt welding leg (23) is fixedly installed and connected with the PCB, an interval is formed between the guide plate (21) and the PCB.

3. The high current diverting copper bar connector according to claim 1, wherein: the plastic shell (1) is provided with a terminal groove (12) penetrating through the opposite slot (11) along the lower end face upwards, the terminal part (22) is penetrated in the terminal groove (12) from bottom to top, and the upper part of the terminal part (22) is exposed in the opposite slot (11).

4. A high current diverting copper bar connector according to claim 3, characterized in that: barbs (221) are formed on two sides of the lower end of the terminal part (22), and the barbs (221) are clamped and positioned with the inner wall of the terminal groove (12).

5. The high current diverting copper bar connector according to claim 1, wherein: the lower end face of the plastic shell (1) is also provided with a mounting groove (13) penetrating through the outer side face of the plastic shell and the terminal groove (12), and one end, connected with the terminal part (22), of the guide plate (21) is clamped in the mounting groove (13).

6. A high current diverting copper bar connector according to any of claims 1-5, characterized in that: the two sides of one end of the guide plate (21) connected with the terminal part (22) are bent and formed with function welding legs (211) protruding downwards, and the function welding legs (211) are fixedly inserted into the PCB and form guide joints to realize heavy current diversion.

7. The high current diverting copper bar connector according to claim 6, wherein: convex seats (14) are formed on two sides of the lower end of the plastic shell (1), fixing feet (15) which are T-shaped are fixedly inserted into the convex seats (14), and the lower ends of the fixing feet (15) protrude out of the lower end face of the plastic shell (1).

8. The high current diverting copper bar connector according to claim 6, wherein: positioning pins (16) protruding downwards are formed on two sides of the lower end face of the plastic shell (1).

9. The high current diverting copper bar connector according to claim 6, wherein: the number of the copper bars (2) is two, the terminal parts (22) of the two copper bars (2) are arranged in the plastic shell (1) in parallel and are exposed in the opposite inserting groove (11), and the split welding pins (23) of the two copper bars (2) are distributed outside the plastic shell (1).

10. The utility model provides a heavy current reposition of redundant personnel copper bar connector which characterized in that: it comprises the following steps:

a first plastic case (3) having a first pair of slots (31);

a second plastic case (4) having a second pair of slots (41);

the copper bar (2) comprises a guide plate (21), a first terminal part (24) and a second terminal part (25) which are bent upwards to form two ends of the guide plate (21), wherein a plurality of first diversion welding feet (26) which protrude downwards are bent upwards at the position, close to the first terminal part (24), of the guide plate (21), a plurality of second diversion welding feet (27) which protrude downwards are bent downwards at the position, close to the second terminal part (25), of the guide plate (21), and the first terminal part (24) is arranged in the first plastic shell (3) and exposed in the first pair of slots (31) to form a first connector; the second terminal part (25) is arranged in the second plastic shell (4) and exposed in the second pair of slots (41) to form a second connector; the first shunt welding pin (26) and the second shunt welding pin (27) are both connected with the PCB in a guiding mode so as to realize large-current shunt.