CN219534931U - Heavy-current welding-free terminal connector - Google Patents

Abstract

The utility model discloses a heavy-current welding-free terminal connector, which comprises a plastic shell and a fisheye terminal arranged in the plastic shell, wherein the lower end of the fisheye terminal is provided with two rows of first fisheye pins and second fisheye pins which are distributed at intervals, the number of the first fisheye pins and the second fisheye pins is at least two, and the first fisheye pins and the second fisheye pins extend out of the lower end face of the plastic shell, so that the number of the fisheye pins can be increased on the premise of unchanged width of the fisheye terminal, the heavy current is further split in a multi-channel manner, the current flowing through each fisheye pin is reduced, the heating is reduced, the heavy current transmission of a single terminal is realized, the larger current can be transmitted, the fisheye terminal pins can be more stably inserted and fixed on a PCB (printed circuit board), the fisheye terminal is prevented from being easy to shake, the fisheye terminal is easy to loose, the welding process is not needed, the production cost is reduced, the conductive reliability is also ensured, and various vibration environments of an automobile are tolerated, and the heavy current welding connector is particularly suitable for new energy automobiles.

Description

Heavy-current welding-free terminal connector

Technical Field

The utility model relates to the technical field of connectors, in particular to a high-current welding-free terminal connector.

Background

The high-current connector is widely applied to the fields of electric automobiles, electric forklifts, general power supplies, medical equipment, solar energy, new energy sources and the like. The high-current connector needs to transmit higher current, so that the terminals of the high-current connector need to bear larger current, so that the terminals are prevented from being broken down and burnt out, and the charging or data connection stability of the electronic product is ensured.

Currently, high current connectors typically employ fisheye terminals that are electrically connected to a circuit board by engaging PTH holes on the PCB. The mode is different from the traditional welding mode, and because the welding-free mode is adopted, the use of soldering flux is reduced, adverse reaction in a high-temperature tin furnace is avoided, and the fisheye terminal has detachability and is more convenient to use.

Referring to fig. 1, the fisheye terminal 200 includes a sheet-shaped base 201, an opposite insertion portion 202 formed by extending upward along an upper end of the base 201, and a plurality of fisheye pins 203 formed at a lower end of the base 201, wherein the fisheye pins 203 are configured to be inserted and fixed with PTH holes on a PCB board to form electrical conduction. The fish eye terminal 200 has the following defects: the fisheye terminal 200 has a single-layer structure, and only a row of fisheye pins 203 can be arranged, and after the fisheye pins 203 are inserted and fixed with PTH holes on a PCB, the fisheye terminal 200 is easy to shake on one side, so that the fisheye terminal 200 is easy to loosen, and the conductive reliability is affected; in addition, on the premise that the width of the fisheye terminal 200 is limited, the number of fisheye pins 203 is limited, so that when a large current is conducted, a larger amount of heat is generated due to the fact that the number of fisheye pins 203 of the fisheye terminal 200 is smaller, and therefore the fisheye terminal 200 cannot transmit a larger current, and further the large current connector cannot transmit a larger current.

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

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a high-current welding-free terminal connector.

In order to solve the technical problems, the utility model adopts the following technical scheme: the high-current welding-free terminal connector comprises a plastic shell and a fisheye terminal arranged in the plastic shell, wherein the lower end of the fisheye terminal is provided with two rows of first fisheye pins and second fisheye pins which are distributed at intervals, the number of the first fisheye pins and the second fisheye pins is at least two, and the first fisheye pins and the second fisheye pins extend out of the lower end face of the plastic shell.

In the above technical solution, the fisheye terminal includes two first fisheye terminals and second fisheye terminals that are overlapped and fixed together, and at least two first fisheye pins are provided at the lower end of the first fisheye terminal; the lower end of the second fisheye terminal is provided with at least two second fisheye pins; the lower ends of the first fisheye terminal and/or the second fisheye terminal are bent, so that the first fisheye pin and the second fisheye pin are distributed in two rows at intervals.

In the above technical solution, the first fisheye terminal includes a first base, a first pair of insertion parts formed by extending upward along an upper end of the first base, and at least two first fisheye pins formed at a lower end of the first base; the second fisheye terminal comprises a second base part, a second pair of inserting parts and at least two second fisheye pins, wherein the second pair of inserting parts are formed by extending upwards along the upper end of the second base part, the second fisheye pins are formed at the lower end of the second base part, and the lower end of the second base part is outwards bent and then downwards bent into a Z shape, so that the rows of second fisheye pins and the rows of first fisheye pins are distributed at intervals; the first pair of inserting parts and the second pair of inserting parts are mutually overlapped and fixed.

In the above technical solution, the first fisheye terminal includes a first base, a first pair of insertion parts formed by extending upward along an upper end of the first base, and at least two first fisheye pins formed at a lower end of the first base; the second fisheye terminal comprises a second base part, a second pair of inserting parts and at least two second fisheye pins, wherein the second pair of inserting parts are formed by extending upwards along the upper end of the second base part, the second fisheye pins are formed at the lower end of the second base part, the lower end of the second base part is outwards bent and then downwards bent into a Z shape, the first pair of inserting parts and the second pair of inserting parts are mutually overlapped and fixed, and the second fisheye pins in a row and the first fisheye pins in a row are in mirror symmetry interval distribution.

In the above technical solution, the first pair of inserting portions and the second pair of inserting portions are fixed into a whole by riveting or welding.

Furthermore, in the above technical solution, the outer sides of the upper end plate surfaces of the first pair of inserting portions and the second pair of inserting portions are respectively provided with an arc-shaped guiding surface.

In the above technical solution, the first fisheye terminal and the second fisheye terminal are two independent individuals; or, the first fish-eye terminal and the second fish-eye terminal are of an integrated structure, and the top ends of the first fish-eye terminal and the second fish-eye terminal are integrally connected and folded in half.

Furthermore, in the above technical scheme, the size, shape and structure of the first fisheye terminal and the second fisheye terminal are the same, wherein the lower ends of the first fisheye terminal and the second fisheye terminal are bent to be zigzag and distributed in a mirror symmetry manner.

Furthermore, in the above technical scheme, the plastic shell is provided with a pair of slots, the plastic shell is upwards provided with a mounting groove penetrating the pair of slots along the lower end of the plastic shell, the fisheye terminal is inserted and fixed in the mounting groove from bottom to top, and the upper part of the fisheye terminal is exposed in the pair of slots.

Furthermore, in the above technical solution, the outside of the fisheye terminal is provided with a barb, and the barb is clamped and positioned with the inner wall of the mounting groove; the opposite inserting groove inner wall is also provided with a limiting groove, and a buckle is further arranged in the limiting groove.

By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects: the fish-eye terminal used by the utility model is provided with the first fish-eye pins and the second fish-eye pins which are distributed at intervals, so that the number of the fish-eye pins can be increased on the premise of ensuring that the width of the fish-eye terminal is unchanged, and then the large current is split in a multi-channel manner, so that the current flowing through each fish-eye pin is reduced, the heating is reduced, the large current transmission of a single terminal is realized, and the larger current can be transmitted to meet different use requirements; in addition, the fish-eye terminal can be more stably inserted and fixed on the PCB through the first fish-eye pins and the second fish-eye pins, single-side shaking of the fish-eye terminal is prevented, further the fish-eye terminal can be effectively prevented from being loosened easily, a welding process is not needed, the production cost is reduced, the conductive reliability is also ensured, various vibration environments of an automobile are resisted, and the fish-eye terminal is particularly suitable for new energy automobiles.

Drawings

Fig. 1 is a front view of a prior art fish eye terminal;

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

FIG. 3 is a perspective view of another view of the present utility model;

FIG. 4 is a cross-sectional view of the present utility model;

FIG. 5 is a cross-sectional view of another cross-section of the present utility model;

fig. 6 is a perspective view of a fisheye terminal of the utility model;

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

fig. 8 is a perspective view of the present utility model assembled with a PCB board at another view angle.

Detailed Description

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

Referring to fig. 1-6, a heavy current solderless terminal connector includes a plastic housing 4 and a fisheye terminal 100 mounted in the plastic housing 4, wherein two rows of first fisheye pins 13 and second fisheye pins 23 are disposed at the lower end of the fisheye terminal 100, the number of the first fisheye pins 13 and the second fisheye pins 23 is at least two, and the first fisheye pins 13 and the second fisheye pins 23 extend out of the lower end surface of the plastic housing 4. The fisheye terminal 100 is provided with two rows of first fisheye pins 13 and second fisheye pins 23 which are distributed at intervals, so that the fisheye terminal 100 can increase the number of fisheye pins on the premise of unchanged width, and then the large current is split in a multi-channel manner, so that the current flowing through each fisheye pin is reduced, the heat is reduced, the large current transmission of a single terminal is realized, and the larger current can be transmitted to meet different use requirements; in addition, the fisheye terminal 100 can be more stably inserted and fixed on the PCB board through the first fisheye pin 13 and the second fisheye pin 23, so that the fisheye terminal 200 is prevented from being easy to shake unilaterally, further, the fisheye terminal 200 can be effectively prevented from being easy to loosen, a welding process is not needed, the production cost is reduced, the conductive reliability is also ensured, and various vibration environments of an automobile are resisted, and the fisheye terminal is particularly suitable for new energy automobiles.

The fisheye terminal 100 comprises a first fisheye terminal 1 and a second fisheye terminal 2 which are mutually overlapped and fixed together, and at least two first fisheye pins 13 are arranged at the lower end of the first fisheye terminal 1; the lower end of the second fisheye terminal 2 is provided with at least two second fisheye pins 23; the lower ends of the first fisheye terminal 1 and/or the second fisheye terminal 2 are bent, so that the first fisheye pin 13 and the second fisheye pin 23 are distributed in two rows at intervals. That is, the fish-eye terminal 100 of the present utility model has a double-layer structure, which has better conductivity and more stable structure, and the fish-eye terminal 100 has the first fish-eye pins 13 and the second fish-eye pins 23 distributed in two rows at intervals, so that the upper part of the fish-eye terminal 100 outputs a large current and splits the large current, and the large current splits and transmits to each channel of the PCB through the combination of the first fish-eye pins 13 and the second fish-eye pins 23 distributed in two rows at intervals at the lower part, thereby realizing the large current transmission of a single terminal, reducing heat generation, and being safer and more reliable to use.

In the present embodiment, the number of the first fisheye terminal 1 and the second fisheye terminal 2 is 5.

The fish eye terminal 100 comprises at least the following two structures:

the first structure is: referring to fig. 6, the first fisheye terminal 1 includes a first base 11, a first pair of inserting parts 12 formed by extending upward along the upper end of the first base 11, and at least two first fisheye pins 13 formed at the lower end of the first base 11; the second fisheye terminal 2 comprises a second base 21, a second pair of inserting parts 22 formed by extending upwards along the upper end of the second base 21, and at least two second fisheye pins 23 formed at the lower end of the second base 21, wherein the lower end of the second base 21 is bent outwards and then bent downwards into a zigzag shape, so that the rows of second fisheye pins 23 are distributed at intervals with the rows of first fisheye pins 13; wherein, the lower end of the second base 21 is bent outwards by an angle a and then bent downwards by an angle b to form a Z shape, the value of the angle a is equal to the value of the angle b, and when the angle a is 90 degrees, the angle b is 90 degrees; when a is 80 degrees, b is 80 degrees. That is, the first fisheye terminal 1 and the second fisheye terminal 2 are different in structure, and the first fisheye terminal 1 has a straight plate structure, wherein the first pair of insertion parts 12, the first base part 11, and the first fisheye pin 13 are integrally connected and on one plane. The second fisheye terminal 2 is in a bent structure, wherein the second pair of inserting portions 22 and the upper portion of the second base portion 21 are on a plane, and the lower end of the second base portion 21 is bent outwards and then bent downwards into a zigzag shape, so that the rows of second fisheye pins 23 are vertically downward and are not on the same plane with the second pair of inserting portions 22, but the plane of the second fisheye pins 23 is required to be parallel to the plane of the second pair of inserting portions 22.

The first inserting part 12 and the second inserting part 22 are mutually overlapped and fixed, so that the first fisheye terminal 1 and the second fisheye terminal 2 are combined into a whole to be used as the fisheye terminal 100.

The second structure is as follows: the first fisheye terminal 1 comprises a first base 11, a first pair of insertion parts 12 formed by extending upwards along the upper end of the first base 11, and at least two first fisheye pins 13 formed at the lower end of the first base 11; the lower end of the second base part 21 is bent outwards and then bent downwards into a Z shape; the second fisheye terminal 2 comprises a second base 21, a second pair of inserting parts 22 formed by extending upwards along the upper end of the second base 21, and at least two second fisheye pins 23 formed at the lower end of the second base 21, wherein the lower end of the second base 21 is bent outwards and then bent downwards into a zigzag shape, the first pair of inserting parts 12 and the second pair of inserting parts 22 are mutually overlapped and fixed, and the second fisheye pins 23 in a row and the first fisheye pins 13 in a row are distributed in a mirror symmetry interval. That is, the first fisheye terminal 1 and the second fisheye terminal 2 have the same structure, and the first fisheye terminal 1 and the second fisheye terminal 2 have the same size and shape, and in the manufacturing process, only any one of the first fisheye terminal 1 and the second fisheye terminal 2 needs to be manufactured, the first pair of inserting portions 12 of the first fisheye terminal 1 and the second pair of inserting portions 22 of the second fisheye terminal 2 are overlapped and fixed in a mirror symmetry manner, and the second fisheye pins 23 in a row and the first fisheye pins 13 in a row are distributed in a mirror symmetry manner at intervals.

The first pair of inserting parts 12 and the second pair of inserting parts 22 are fixed into a whole through riveting or welding.

The outer sides of the upper end plate surfaces of the first and second pairs of insertion parts 12 and 22 are provided with arc-shaped guide surfaces. When the utility model is inserted with a mating connector, the arc-shaped guide surface of the fish-eye terminal 100 plays a good guide role, so that the fish-eye terminal 100 can be quickly and stably inserted with the terminal of the mating connector, and the use is more convenient.

The first fisheye terminal 1 and the second fisheye terminal 2 are two independent individuals; or, the first fisheye terminal 1 and the second fisheye terminal 2 are in an integrated structure, the top ends of the first fisheye terminal 1 and the second fisheye terminal 2 are integrally connected, and are folded in half along the connection part of the top ends of the first fisheye terminal 1 and the second fisheye terminal 2, so that the first fisheye terminal 1 and the second fisheye terminal 2 are mutually overlapped.

The first fisheye terminal 1 and the second fisheye terminal 2 are identical in size, shape and structure, wherein the lower ends of the first fisheye terminal 1 and the second fisheye terminal 2 are bent to be Z-shaped and distributed in a mirror symmetry mode.

The plastic shell 4 is provided with a pair of slots 41, the plastic shell 4 is provided with a mounting groove 42 penetrating the pair of slots 41 upwards along the lower end thereof, the fisheye terminal 100 is inserted and fixed in the mounting groove 42 from bottom to top, and the upper part of the fisheye terminal 100 is exposed in the pair of slots 41. The first and second mating portions 12 and 22, which are overlapped with each other at the upper portion of the fisheye terminal 100, are exposed in the mating grooves 41 for mating connection with the mating connector.

The outside of the fish-eye terminal 100 is provided with a barb 101, and the barb 101 is clamped and positioned with the inner wall of the mounting groove 42, so that the fish-eye terminal 100 is fixed in the plastic shell 4.

The inner wall of the opposite inserting groove 41 is further provided with a limiting groove 43, and a buckle 431 is further arranged inside the limiting groove 43. The position of the mating connector corresponding to the limit groove 43 is provided with a convex part, and the convex part is provided with a clamping groove matched with the buckle 431, when the mating connector is plugged with the mating connector, the convex part is embedded into the limit groove 43, and the clamping groove is clamped and positioned with the buckle 431, so that the mating connector can be prevented from being separated from the mating connector accidentally.

Referring to fig. 7-8, in the use of the present utility model, the first fisheye pin 13 and the second fisheye pin 23 are inserted and fixed in the PTH hole 401 of the PCB 400, and are positioned relatively, which does not need to be soldered, and of course, two or more heavy current solderless terminal connectors can be mounted on the PCB 400 in the above-mentioned assembly manner, so as to meet different use requirements.

In summary, the fisheye terminal 100 used in the utility model has two rows of first fisheye pins 13 and second fisheye pins 23 which are distributed at intervals, so that the fisheye terminal 100 can increase the number of fisheye pins on the premise of unchanged width, and further, the high current is split in multiple channels, so that the current flowing through each fisheye pin is reduced, the heat is reduced, the high current transmission of a single terminal is realized, and the larger current can be transmitted, so as to meet different use requirements; in addition, the fisheye terminal 100 can be more stably inserted and fixed on the PCB board through the first fisheye pin 13 and the second fisheye pin 23, so that the fisheye terminal 200 is prevented from being easy to shake unilaterally, further, the fisheye terminal 200 can be effectively prevented from being easy to loosen, a welding process is not needed, the production cost is reduced, the conductive reliability is also ensured, and various vibration environments of an automobile are resisted, and the fisheye terminal is particularly suitable for new energy automobiles.

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 (10)

1. The utility model provides a heavy current exempts from to weld terminal connector, its includes plastic shell (4) and installs fisheye terminal (100) in this plastic shell (4), its characterized in that:

the lower end of the fish-eye terminal (100) is provided with two rows of first fish-eye pins (13) and second fish-eye pins (23) which are distributed at intervals, the number of the first fish-eye pins (13) and the number of the second fish-eye pins (23) are at least two, and the first fish-eye pins (13) and the second fish-eye pins (23) extend out of the lower end face of the plastic shell (4).

2. The high-current solderless terminal connector of claim 1, wherein: the fish-eye terminal (100) comprises a first fish-eye terminal (1) and a second fish-eye terminal (2) which are mutually overlapped and fixed together, and at least two first fish-eye pins (13) are arranged at the lower end of the first fish-eye terminal (1); the lower end of the second fisheye terminal (2) is provided with at least two second fisheye pins (23); the lower ends of the first fisheye terminal (1) and/or the second fisheye terminal (2) are bent, so that the first fisheye pins (13) and the second fisheye pins (23) are distributed in two rows at intervals.

3. A high-current solderless terminal connector according to claim 2, wherein: the method is characterized in that: the first fisheye terminal (1) comprises a first base (11), a first pair of inserting parts (12) which are formed by extending upwards along the upper end of the first base (11), and at least two first fisheye pins (13) which are formed at the lower end of the first base (11); the second fisheye terminal (2) comprises a second base (21), a second pair of inserting parts (22) which are formed by extending upwards along the upper end of the second base (21) and at least two second fisheye pins (23) which are formed at the lower end of the second base (21), wherein the lower end of the second base (21) is outwards bent and then downwards bent into a Z shape, so that the second fisheye pins (23) in a row are distributed at intervals with the first fisheye pins (13) in a row; the first pair of inserting parts (12) and the second pair of inserting parts (22) are mutually overlapped and fixed.

4. A high-current solderless terminal connector according to claim 2, wherein: the first fisheye terminal (1) comprises a first base (11), a first pair of inserting parts (12) which are formed by extending upwards along the upper end of the first base (11), and at least two first fisheye pins (13) which are formed at the lower end of the first base (11); the second fisheye terminal (2) comprises a second base (21), a second pair of inserting parts (22) which are formed by extending upwards along the upper end of the second base (21) and at least two second fisheye pins (23) which are formed at the lower end of the second base (21), wherein the lower end of the second base (21) is outwards bent and then downwards bent into a Z shape, the first pair of inserting parts (12) and the second pair of inserting parts (22) are mutually overlapped and fixed, and the second fisheye pins (23) in a row and the first fisheye pins (13) in a row are distributed at mirror symmetry intervals.

5. A high current solderless terminal connector according to claim 3 or 4, wherein: the first pair of inserting parts (12) and the second pair of inserting parts (22) are fixed into a whole through a riveting mode or a welding mode.

6. The high-current solderless terminal connector of claim 5, wherein: the outer sides of the upper end plate surfaces of the first pair of inserting parts (12) and the second pair of inserting parts (22) are respectively provided with an arc-shaped guide surface.

7. A high current solderless terminal connector according to claim 3 or 4, wherein: the first fish-eye terminal (1) and the second fish-eye terminal (2) are two independent individuals; or the first fisheye terminal (1) and the second fisheye terminal (2) are of an integrated structure, and the top ends of the first fisheye terminal and the second fisheye terminal are integrally connected and folded in half.

8. The high-current solderless terminal connector of claim 4, wherein: the size, the shape and the structure of the first fisheye terminal (1) and the second fisheye terminal (2) are the same, wherein the lower ends of the first fisheye terminal (1) and the second fisheye terminal (2) are bent to be Z-shaped and distributed in a mirror symmetry mode.

9. A high current solderless terminal connector according to any one of claims 1 to 4, wherein: the plastic shell (4) is provided with a pair of slots (41), the plastic shell (4) is upwards provided with a mounting groove (42) penetrating through the pair of slots (41) along the lower end of the plastic shell, the fisheye terminal (100) is fixedly inserted into the mounting groove (42) from bottom to top, and the upper part of the fisheye terminal (100) is exposed in the pair of slots (41).

10. The high-current solderless terminal connector of claim 9, wherein: the outside of the fish eye terminal (100) is provided with a barb (101), and the barb (101) is clamped and positioned with the inner wall of the mounting groove (42); the inner wall of the opposite inserting groove (41) is also provided with a limiting groove (43), and a buckle (431) is also arranged in the limiting groove (43).