An electrical connector with a bending structure

Abstract

The present invention provides an electrical connector with a bending structure, comprising: a female connector and a male connector, characterized in that: the female connector has two conductive copper sheets with bending structures or one conductive copper sheet with bending structure and one conductive copper sheet without bending structure, and two rectangular opening column slots with the same shape are respectively arranged on one side of the front end and the middle part of the conductive copper sheet; the middle and rear parts and the front end of the conductive copper sheet are integrally injection molded in the body of the female connector, and the tail end of the conductive copper sheet extends out of the rear end of the body as a welding line for welding an external power line. The male connector has two conductive copper sheets with bending structures or one conductive copper sheet with bending structure and one conductive copper sheet without bending structure, and two thin leaf springs with the same shape are respectively fixed on one side of the conductive copper sheet; the middle and rear parts of the conductive copper sheet and the flat part of the thin leaf spring are integrally injection molded in the body of the male connector, and the front end of the conductive copper sheet and the bent part of the thin leaf spring extend out of the front end of the male connector body; the tail end of the conductive copper sheet extends out of the rear end of the body as a welding line for welding an external power line.

Description

Technical field:

[0001] The present invention relates to an electrical connector with a bending structure.

[0002] With the improvement of battery design, many portable devices require larger currents, and the requirements for the current that the battery needs to carry will also become larger. The current that the electrical connector that is easy to plug and unplug between the device and the battery needs to carry will also become larger. The outer diameter of the external power cord welded to the electrical connector will definitely become larger, and the existing electrical connector cannot match the external power cord with a larger outer diameter well.

[0003] The prior art patent with the US invention patent number US5533915A disclosed by inventor William S. Deans is an "electrical connector assembly", which includes: a female head and a male head, wherein the female head has a main body, the main body has a substantially rectangular opening, the female head copper sheet is fixed in a recess on the surface of the female head main body, and the space above the female head copper sheet and the top of the rectangular opening can facilitate the insertion of the male head copper sheet therein. The male head main body also has a rectangular opening, and the male head copper sheet extending through the surface of the male head main body has a curved thin leaf spring, and the thin leaf spring covers the extended part of the male head copper sheet. When the male head is inserted into the opening above the female head copper sheet, the thin leaf spring touches the top of the rectangular opening of the female head, so that the male head copper sheet contacts the female head copper sheet, thereby forming a good electrical connection between each other. One pair of copper sheets is plated with nickel and gold, and the other pair of copper sheets is plated with nickel and silver. The pair of copper sheets of the male head and the pair of copper sheets of the female head are fixed at right angles so that the male head can only be inserted into the female head in one way.

[0004] The U.S. invention patent with publication number US5533915A, such as Figure 1 As shown, the male connector 10 has two male copper plates 12 and 13 of the same shape, and beryllium copper springs 14 and 15 are fixed on one side of the male copper plates 12 and 13 respectively; Figure 2 As shown, the male copper sheet 12 has a top 16, a bottom 17, a first side 18, a second side 19, a front end 20 and a rear end 21. The male copper sheet 12 is made of copper, preferably nickel-plated, and secondarily gold-plated. The male copper sheet 12 has a thickness 22 and a groove 23 is formed on the first side. The male copper sheet 12 also has a step 24, which positions the male copper sheet in a generally rectangular opening of the male head 10 body 25; the thin leaf spring 14 is made of beryllium copper and has a bent portion 26 and a flat portion 27. The bent portion 26 extends through the face 28 of the male head body, while the flat portion 27 is retained within the male head body. The pull ring 29 can be inserted into the groove 23 to keep the beryllium copper leaf spring stationary during assembly and thereafter during use. The beryllium copper leaf spring 15 has the same structure and also has a pull ring that can be inserted into the groove of the male copper sheet 13; as shown Figure 6As shown, the male plug 10 has a generally rectangular upper opening 30 and a rectangular lower opening 31 of the same shape (although rotated 90 degrees). The opening 31 has a top 32, a bottom 33, a first side 34 and a second side 35. The first and second sides also have steps 36, which cooperate with the step 24 on the male copper sheet 12 to prevent further rearward movement of the male copper sheet. A bottom groove 37 is formed in the bottom 33 and ends at a step 38, which cooperates with a protrusion 39 formed by an indentation 40 of the top 16 of the male copper sheet 12; the beryllium copper spring 14 is placed on the male copper sheet 12 so that the pull ring 29 can just be inserted into the groove 23. The rear end 21 of the copper sheet male plug 12 is inserted into the opening 31, and the protrusion 39 is installed in the bottom groove 37. The beryllium copper spring 14 is installed in the opening 31, and as the copper male connector 12 is forced into the male connector body 25, the projection 39 will squeeze out a portion of the step 38 until it moves to the rear portion 41, and the projection 39 will be firmly fixed at the rear portion 41 and prevent the male copper connector 12 from being pulled out. The male copper connector 13 and the beryllium copper spring 15 are inserted into the upper generally rectangular opening 30 in the same manner. The male conductors 42 and 43 are welded at the rear portion 21.

[0005] The U.S. invention patent with publication number US5533915A, such as Figure 5 As shown, the body 45 of the female plug 11 has a first side 46, a second side 47, a top 48, a bottom 49 and a rear portion 50, and the body 45 has a generally rectangular upper opening 51 and a generally rectangular lower opening 52 of the same shape. The rectangular opening 52 has a top 53, a bottom 54, a first side 55 and a second side 56. The bottom groove 57 has a step 58. Figure 3 As shown, the female copper sheet 59 has a top 60, a bottom 61, a front end 62, a rear end 63, a first side 64 and a second side 65. The female copper sheet 59 has a protrusion 66 and a matching indentation 67, and the female copper sheet 59 is retained in the body 45 of the female connector 11. The female copper sheet 59' also has a protrusion 66 and a matching indentation 67 similar to the female copper sheet 59. The front end 62 of the female copper sheet is placed in the recess of the face 44. This helps to avoid any necessary contact between the male copper sheets 12 and 13 unless they are inserted in the correct orientation. The conductor 68 is soldered to the female copper sheet 59 at 69, and the conductor 70 is soldered to the female copper sheet 59' at 71. When the male copper sheets 12 and 13 are inserted into the generally rectangular openings 51 and 52. The beryllium copper spring 14 contacts the top 53 of the rectangular opening 52, thereby forcing the beryllium copper spring of the male copper sheet 12 to touch against the top 60 of the female copper sheet 59.

[0006] The above-cited publication number is an electrical connector assembly disclosed in US5533915A. Although the assembly can carry a large amount of current without scratching and is easy to insert and remove, it still has some shortcomings: First, welding an external power cord with a larger outer diameter on an existing electrical connector may cause the welding points of the positive and negative external power cords to touch each other and short-circuit, thereby posing a safety hazard. Secondly, the existing electrical connector has a small space reserved between the two copper sheets, and the other copper sheet and the conductor of the external power cord that has been welded will block the line of sight of the welder during welding, so the welding speed is very slow and the welding quality is not good. Third, when an external power cord with a larger outer diameter is welded on an existing electrical connector, the two external power cords welded on the electrical connector touch too tightly, and the heat shrink tubing that insulates the welding point is difficult to insert into the external power cord, which seriously affects the production efficiency.

[0007] In view of some deficiencies of the electrical connector assembly, the present invention will greatly improve these defects, thereby providing an electrical connector with a bending structure to ensure that an external power cord with a larger outer diameter can be matched with it.

[0008] In order to overcome the defects of existing electrical connectors that cannot match well with external power lines with larger outer diameters and that the speed of welding the positive and negative power lines to copper sheets is slow, the present invention provides an electrical connector with a bending structure. By arranging the male copper sheet and the female copper sheet into a bending structure, sufficient space is reserved at the tail of the copper sheet for welding an external power line with a larger outer diameter.

[0009] The technical solution adopted by the present invention to solve its technical problems is: an electrical connector with a bending structure, comprising: a female head and a male head, characterized in that: the female head has two conductive copper sheets with bending structures or one conductive copper sheet with bending structure and one conductive copper sheet without bending structure, and two rectangular opening column slots with the same shape are respectively arranged on one side of the front end and the middle part of the conductive copper sheet; the middle and rear parts and the front end of the conductive copper sheet are integrally injection molded in the body of the female head, and the tail end of the conductive copper sheet extends out of the rear end of the body as a welding line for welding an external power line. The male head has two conductive copper sheets with bending structures or one conductive copper sheet with bending structure and one conductive copper sheet without bending structure, and two thin leaf springs with the same shape are respectively fixed on one side of the conductive copper sheet; the middle and rear parts of the conductive copper sheet and the flat part of the thin leaf spring are integrally injection molded in the body of the male head, and the front end of the conductive copper sheet and the bent part of the thin leaf spring extend out of the front end of the male head body; the tail end of the conductive copper sheet extends out of the rear end of the body as a welding line for welding an external power line.

[0010] The above-mentioned electrical connector with a bending structure, the conductive copper sheet of the bending structure of the female head is composed of a front end, a middle part, and a rear end; the contact surfaces of the front end and the middle part of the conductive copper sheet are adjacent to the column groove of the rectangular opening, and play the function of contacting and conducting with the conductive copper sheet of the male head; the positive copper sheet, the column groove and the negative copper sheet, the column groove are fixed at right angles; the middle and rear parts of the conductive copper sheet have a bending structure, the angle of the bending structure is arbitrary, but the middle and rear parts of the conductive copper sheet are parallel; the rear end of the conductive copper sheet has chamfers and fillets, which facilitates the heat shrink tubing to smoothly enter the welding point at the rear end of the conductive copper sheet after passing through the external power cord.

[0011] The electrical connector with a bending structure described above has convex grooves with anti-slip design on the front and back of the front end of the main body of the female head, and grooves with anti-slip design on the two side surfaces of the main body; there are two square grooves at the rear end of the main body as welding areas to distinguish the positive and negative external power lines welded to the conductive copper sheet, and to ensure that the external power line can only be placed on the conductive copper sheet for welding in one way. There is a positive mark at the bottom of the positive square groove, which is used to weld the conductor of the positive power line. There is a negative mark at the bottom of the negative square groove, which is used to weld the conductor of the negative power line; the front of the main body also has obvious positive and negative marks.

[0012] The above-mentioned electrical connector with a bending structure, the conductive copper sheet of the bending structure of the male head consists of a front end, a middle part, and a rear end; two thin leaf springs of the same shape are fixed to the contact surfaces of the front end and the middle part of the conductive copper sheet respectively, and the pull rings of the thin leaf springs are inserted into the lock holes of the conductive copper sheet to fix the thin leaf springs on the conductive copper sheet; the positive copper sheet, the thin leaf spring and the negative copper sheet, the thin leaf spring are fixed at right angles; the middle and rear parts of the conductive copper sheet have a bending structure, the angle of the bending structure is arbitrary, but the middle and rear parts of the conductive copper sheet are parallel; the rear end of the conductive copper sheet has chamfers and fillets, which facilitates the heat shrink tubing to smoothly enter the welding point at the rear end of the conductive copper sheet after passing through the external power cord.

[0013] The electrical connector with a bending structure described above has grooves on both sides of the main body of the male plug with anti-slip design; there are two square grooves at the rear end of the main body as welding areas to distinguish the positive and negative external power lines to be welded to the conductive copper sheet, and to ensure that the external power line can only be placed on the conductive copper sheet for welding in one way. There is a positive mark at the bottom of the positive square groove, which is used to weld the conductor of the positive power line. There is a negative mark at the bottom of the negative square groove, which is used to weld the conductor of the negative power line; the front of the main body also has obvious positive and negative marks.

[0014] The above technical solution of the present invention has the following advantages over the prior art: (1) The greatest technical feature of the present invention is that the male and female copper sheets have a bent structure. By bending the copper sheets, sufficient space is reserved in the welding area, so that external power lines with larger outer diameters can be welded, and the possibility of the welding points of the positive and negative external power lines touching each other can be avoided. (2) By chamfering and rounding the rear end of the copper sheet, the heat shrink tubing can easily enter the welding point at the rear end of the conductive copper sheet after being inserted into the external power line. (3) The prior art is an invention patent of the United States. The welding method designed by the inventor William S. Deans is as follows: Figure 1 As shown in the three-dimensional diagram of the male connector 10 and the female connector 11, we can find that the welding methods of the male connector 10 and the female connector 11 are completely different. Fig.25 As shown, when soldering the copper sheet of the male connector 10, the copper sheet 13 is close to the soldering iron 7. After soldering the copper sheet 13, the male connector 10 is rotated 90 degrees clockwise, and then the copper sheet 12 is soldered. When soldering the copper sheet 12, the copper sheet 13 and the conductor 43 will block our sight (the sight direction is from the right to the direction of the soldering iron 7), and the soldering speed will definitely be very slow. When soldering the copper sheet 59' of the female connector 11, the copper sheet 59 is close to the soldering iron 7. After soldering the copper sheet 59', the female connector 11 is rotated 90 degrees counterclockwise, and then the copper sheet 59 is soldered. When soldering the copper sheet 59, the copper sheet 59' and the conductor 70 will block our sight, and the soldering speed is also very slow. When we solder the external power cord to the female connector 1 and the male connector 2 of the present invention, since the copper sheet has a bending structure and fully considers the convenience and efficiency of soldering, Fig. 9 and 10 As shown in the figure, the soldering area of ​​female connector 1 and male connector 2 is exactly the same, so the soldering methods of female connector 1 and male connector 2 must be exactly the same. Fig.26 As shown, the welding method adopted by the present invention is to first weld the negative copper sheet close to the electric soldering iron 7, and then rotate it counterclockwise 90 degrees so that the positive copper sheet is just below the electric soldering iron 7, and then weld the positive copper sheet. In this way, there is no situation where the power line conductor and the negative copper sheet block the line of sight, which will greatly improve the efficiency of welding. (4) The male copper sheet and the female copper sheet of the present invention are bent and then integrally injection molded. The copper sheet will be firmly fixed in the body of the integral injection molding and cannot be pulled out due to the bending structure. Its firmness is obviously higher than that of the existing technology in which the protrusion formed by the indentation of the copper sheet is squeezed into the step of the main body and then fixed to the rear part of the main body. Description of the drawings:

[0015] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein

[0016] Figure 1 Three-dimensional image of the male and female connectors of the US invention patent (publication number: US5533915A)

[0017] Figure 2 3D image of the male copper sheet and beryllium copper sheet spring of the US invention patent (publication number: US5533915A)

[0018] Figure 3 Front view and top view of the female copper sheet of the US invention patent (publication number: US5533915A)

[0019] Figure 4 Front view and top view of beryllium copper leaf spring of US invention patent (publication number: US5533915A)

[0020] Figure 5 Front view and cross-sectional view of the female connector of the US invention patent (publication number: US5533915A)

[0021] Figure 6 Front view and cross-sectional view of the male connector of the US invention patent (publication number: US5533915A)

[0022] Figure 7 Front view of the female and male connectors of the present invention

[0023] Figure 8 Schematic diagram of the reverse side of the female and male connectors of the present invention

[0024] Fig. 9 Front view of the male and female connectors of the external power cord after being welded, left view of the female connector, and right view of the male connector

[0025] Fig.10 The back view of the male and female connectors after the external power cord is welded, the left view of the female connector, and the right view of the male connector

[0026] Fig.11 Front view, top view, left view and cross-section view of the female connector

[0027] Fig.12 Rear view and cross-section of the female connector

[0028] Fig.13 Front view, top view, left view and cross-section view of the female positive copper sheet

[0029] Fig.14 Front view, top view, left view and cross-section view of the negative copper sheet of the female connector

[0030] Fig.15 Front view, top view, left view and cross-section view of the male connector

[0031] Fig.16 Rear view and cross-section of the male connector

[0032] Fig.17Front view, top view, left view and cross-section view of the male positive copper sheet

[0033] Fig.18 Front view, top view, left view and cross-section view of the male negative copper sheet

[0034] Fig.19 Front view, top view, left view and cross-section view of the leaf spring

[0035] Fig. 20 Installation diagram of the male positive copper sheet and thin leaf spring, installation diagram of the male negative copper sheet and thin leaf spring

[0036] Fig.21 The front view, rear view and cross-section view of the female connector with the positive copper sheet bent and the negative copper sheet not bent

[0037] Fig. 22 The front view, rear view and cross-section of the male connector with the positive copper sheet bent and the negative copper sheet not bent

[0038] Fig.23 The front view, rear view and cross-section view of the female connector with the positive copper sheet not bent and the negative copper sheet bent

[0039] Fig.24 The front view, rear view and cross-section of the male connector with the positive copper sheet not bent and the negative copper sheet bent

[0040] Fig.25 Schematic diagram of welding the external power cord to the male and female connectors of the US invention patent (Announcement No.: US5533915A)

[0041] Fig.26 Schematic diagram of welding the external power line to the male and female connectors of the present invention

[0042] In the figure, 1. female connector, 2. male connector, 3. positive external power cord, 4. negative external power cord, 5. positive external power cord conductor, 6. negative external power cord conductor, 7. electric soldering iron used for welding external power cord. Specific implementation method:

[0043] Embodiment 1]

[0044] like Fig.11 , Fig.12 , Fig.13 and Fig.14As shown, there are two conductive copper sheets 1-1 and 1-2 with bent structures in the female connector 1, and the conductive copper sheets are composed of front ends 1-11 and 1-21, middle parts 1-12 and 1-22, and rear ends 1-13 and 1-23; the contact surfaces 1-15 and 1-25 at the front and middle parts of the conductive copper sheets are adjacent to the column slots 1-3 and 1-4 of the rectangular openings, and play the role of contacting and conducting with the conductive copper sheets 1-1 and 1-2 of the male connector 1; the positive copper sheet 1-1, the column slot 1-3 and the negative copper sheet 1-2, the column slot 1-4 are fixed at right angles so that the male connector 2 can only be inserted into the female connector 1 in one way; the front end of the conductive copper sheet has rounded corners 1-14 and 1-24; the middle and rear parts of the conductive copper sheet have bent structures 1-16 and 1-26, and the angles of the bent structures are arbitrary. However, the middle part 1-12 and 1-22 and the rear end 1-13 and 1-23 of the conductive copper sheet are parallel; the rear end 1-13 and 1-23 of the conductive copper sheet have chamfers 1-18 and 1-28 and rounded corners 1-17 and 1-27, which facilitates the heat shrink tubing to pass through the external power cord and smoothly enter the welding point at the rear end of the conductive copper sheet; the front end of the main body has two rectangular opening column grooves 1-3 and 1-4 of the same shape, which are respectively arranged on one side of the front end 1-11 and 1-21 and the middle part 1-12 and 1-22 of the conductive copper sheet; the middle and rear parts and the front end of the conductive copper sheet are integrally injection molded in the main body of the female head 1, and the tail ends 1-13 and 1-23 of the conductive copper sheet extend out of the rear end of the main body as welding wires 1-19 and 1-29 for welding the external power cord. The front and back sides of the front end of the main body have convex grooves 1-5 with anti-slip design, and the two side surfaces of the main body have grooves 1-6 with anti-slip design; the rear end of the main body has two square grooves 1-9 and 1-10 as the welding wire areas to distinguish the positive and negative external power lines to be welded to the conductive copper sheet, and ensure that the external power line can only be placed on the conductive copper sheet for welding in one way. There is a positive pole mark 1-7 at the bottom of the positive square groove 1-9, which is used to weld the conductor 5 of the positive power line 3. There is a negative pole mark 1-8 at the bottom of the negative square groove 1-10, which is used to weld the conductor 6 of the negative power line 4; the front of the main body also has obvious positive and negative marks.

[0045] [Example 2]

[0046] like Fig.15 , Fig.16 , Fig.17 , Fig.18 , Fig.19 and Fig. 20As shown, the male connector 2 has two conductive copper sheets 2-1 and 2-2 with bent structures, and the conductive copper sheets are composed of front ends 2-11 and 2-21, middle parts 2-12 and 2-22, and rear ends 2-13 and 2-23; the contact surfaces 2-15 and 2-25 at the front ends and middle parts of the conductive copper sheets 2-1 and 2-2 are respectively fixed with two thin leaf springs 2-3 of the same shape, and the pull rings 2-33 of the thin leaf springs 2-3 are inserted into the lock holes 2-4 and 2-5 of the conductive copper sheets to fix the thin leaf springs on the conductive copper sheets; the positive copper sheet 2-1, the thin leaf spring 2-3 and the negative copper sheet 2-2, The leaf spring 2-3 is fixed at a right angle so that the male connector 2 can only be inserted into the female connector 1 in one way; the front end of the conductive copper sheet has rounded corners 2-14 and 2-24; the middle and rear parts of the conductive copper sheet have bending structures 2-16 and 2-26, the angles of the bending structures are arbitrary, but the middle parts 2-12 and 2-22 and the rear ends 2-13 and 2-23 of the conductive copper sheet are parallel; the rear end of the conductive copper sheet has chamfers 2-18 and 2-28 and rounded corners 2-17 and 2-27, which facilitates the heat shrink tubing to pass through the external power cord and smoothly enter the welding point at the rear end of the conductive copper sheet. The middle and rear parts of the conductive copper sheets 2-1 and 2-2 and the flat part 2-32 of the leaf spring 2-3 are integrally injection molded in the body of the male plug 2. The front ends 2-11 and 2-21 of the conductive copper sheets and the curved part 2-31 of the leaf spring extend out of the front end of the male plug body; the tail ends 2-13 and 2-23 of the conductive copper sheets extend out of the rear end of the body as welding points 2-19 and 2-29 for welding the external power cord. The two sides of the body have grooves 2-6 with anti-slip design; the rear end of the body has two square grooves 2-9 and 2-10 as the welding areas for distinguishing the positive and negative external power cords to be welded to the conductive copper sheets, and ensure that the external power cord can only be placed on the conductive copper sheets in one way for welding. There is a positive mark 2-7 at the bottom of the positive square groove 2-9, which is used to weld the conductor 5 of the positive power cord 3. There is a negative mark 2-8 at the bottom of the negative square groove 2-10, which is used to weld the conductor 6 of the negative power cord 4; the front of the body also has obvious positive and negative marks.

[0047] [Example 3]

[0048] The female connector 1 has a conductive copper sheet with a bent structure and a conductive copper sheet without a bent structure. Fig.21 As shown, the female connector 1 has a positive copper sheet 1-1 with a bent structure and a negative copper sheet 1-2 without a bent structure. Fig.23As shown, the female connector 1 has a negative copper sheet 1-2 with a bending structure and a positive copper sheet 1-1 without a bending structure; two rectangular opening column slots 1-3 and 1-4 of the same shape are arranged on one side of the front end 1-11 and 1-21 and the middle part 1-12 and 1-22 of the conductive copper sheet respectively; the middle rear part and the front end of the conductive copper sheet are integrally injection molded in the main body of the female connector 1, and the tail ends 1-13 and 1-23 of the conductive copper sheet extend out of the rear end of the main body as welding wires 1-19 and 1-29 for welding external power lines. The male connector 2 has a conductive copper sheet with a bending structure and a conductive copper sheet without a bending structure, as shown in FIG. Fig. 22 As shown, the male connector 2 has a positive copper sheet 2-1 with a bent structure and a negative copper sheet 2-2 without a bent structure. Fig.24 As shown, the male connector 2 has a negative copper sheet 2-2 with a bending structure and a positive copper sheet 2-1 without a bending structure; two thin leaf springs of the same shape are respectively fixed on one side of the conductive copper sheet; the middle and rear part of the conductive copper sheet and the flat part 2-32 of the thin leaf spring 2-3 are integrally injection molded in the body of the male connector 2, and the front ends 2-11 and 2-21 of the conductive copper sheet and the bent part 2-31 of the thin leaf spring extend out of the front end of the male connector body; the tail ends 2-13 and 2-23 of the conductive copper sheet extend out of the rear end of the body as welding wires 2-19 and 2-29 for welding external power cords.

[0049] Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here, and the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An electrical connector with a bending structure, the electrical connector is a female connector (1), characterized in that: The female connector (1) has a first conductive copper sheet (1-1) with a bent structure and a second conductive copper sheet (1-2) with a bent structure; a first column slot (1-3) with a rectangular opening is arranged on one side of the front end (1-11) and the middle part (1-12) of the first conductive copper sheet; and a second column slot (1-4) with a rectangular opening is arranged on one side of the front end (1-21) and the middle part (1-22) of the second conductive copper sheet; the middle and rear parts and the front ends of the first conductive copper sheet (1-1) and the second conductive copper sheet (1-2) are integrally injection molded in the body of the female connector (1); the tail end (1-13) of the first conductive copper sheet extends out of the rear end of the body as a first welding line (1-19) for welding an external power line, and the tail end (1-23) of the second conductive copper sheet extends out of the rear end of the body as a second welding line (1-29) for welding an external power line. The first conductive copper sheet of the bending structure is composed of a front end (1-11), a middle part (1-12), and a rear end (1-13); the second conductive copper sheet of the bending structure is composed of a front end (1-21), a middle part (1-22), and a rear end (1-23); the middle and rear part of the first conductive copper sheet has a bending structure (1-16), and the middle and rear part of the second conductive copper sheet has a bending structure (1-26); the angles of the bending structures are arbitrary, but the middle part (1-12) of the first conductive copper sheet and the rear end (1-13) of the first conductive copper sheet are parallel, and the middle part (1-22) of the second conductive copper sheet and the rear end (1-23) of the second conductive copper sheet are also parallel; the rear end (1-13) of the first conductive copper sheet has a chamfer (1-18) and a rounded corner (1-17), and the rear end (1-23) of the second conductive copper sheet has a chamfer (1-28) and a rounded corner (1-27); The front and back sides of the front end of the main body have convex grooves (1-5) with anti-slip design, and the two side surfaces of the main body have grooves (1-6) with anti-slip design; the rear end of the main body has a positive square groove (1-9) and a negative square groove (1-10) as welding wire areas for distinguishing positive and negative external power lines welded to the conductive copper sheet, and ensuring that the external power line can only be placed on the conductive copper sheet for welding in one way; the bottom of the positive square groove (1-9) has a positive pole mark (1-7); the bottom of the negative square groove (1-10) has a negative pole mark (1-8); the back of the main body also has obvious positive and negative marks.

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