Electric connector, manufacturing method thereof and method for adjusting positions of multiple splicing blocks of electric connector

Abstract

The invention discloses an electric connector and a manufacturing method thereof and a method for adjusting positions of a plurality of splicing blocks thereof, and the method comprises the steps: arranging a plurality of splicing blocks along the horizontal direction, each splicing block is formed by metal powder injection molding, and is provided with a plurality of rows of terminal holes penetrating up and down, and the terminal holes of two adjacent splicing blocks are aligned along the horizontal direction; and the plurality of rows of terminals comprise signal terminals and grounding terminals which are respectively and correspondingly accommodated in the terminal holes. The body of the electric connector is formed by splicing the plurality of splicing blocks, and each splicing block is formed by injection molding of the metal powder, so that the influence that the size of the whole body is reduced when the whole body is formed by injection molding of the metal powder is reduced; in addition, after a plurality of splicing blocks are formed through injection molding of metal powder, a positioning plate with a plurality of positioning pins is provided, the positioning pins are inserted into the same positions of every two adjacent splicing blocks respectively, the distance between every two adjacent splicing blocks can be adjusted, then the distance between terminal holes of every two adjacent splicing blocks is adjusted, and the distance is within the size range during design.

Description

[Technical field]

[0001] The present invention relates to an electric connector and a manufacturing method thereof and a method for adjusting the positions of a plurality of splicing blocks thereof, in particular to an electric connector with improved high frequency and a manufacturing method thereof and a method for adjusting the positions of a plurality of splicing blocks thereof. [Background technology]

[0002] A conventional electrical connector includes a body having a plurality of terminal holes. In order to improve high frequency, the body is formed by metal powder injection molding. Since metal powder injection molding is a process of mixing metal powder and adhesive material to burn parts, the adhesive material will evaporate after high temperature, and the metal powder around the adhesive material will replace the original adhesive material, so that the overall size of the body is reduced, and the spacing between the terminal holes does not meet the design size, resulting in the terminals in the terminal holes being unable to contact the metal pads of the docking element one by one. [Summary of the invention]

[0003] The invention aims to provide an electrical connector and a manufacturing method thereof, and a method for adjusting the positions of a plurality of splicing blocks thereof, which can reduce the influence of size reduction during the manufacturing of the main body.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] An electrical connector includes: a plurality of splicing blocks arranged in a horizontal direction, each splicing block is formed by metal powder injection molding and has a plurality of rows of terminal holes penetrating from top to bottom, and the terminal holes of two adjacent splicing blocks are arranged in alignment in the horizontal direction; a plurality of rows of terminals, including signal terminals and ground terminals, are respectively accommodated in the terminal holes.

[0006] Furthermore, for two adjacent splicing blocks, a through groove is recessed on the side of one of the splicing blocks, and the through groove penetrates the splicing block in the up-down direction; an assembling portion is convexly disposed on the side of the other splicing block; the through groove and the assembling portion are respectively rectangular, the through groove has two opposite first side surfaces, and the assembling portion has two opposite second side surfaces, the assembling portion is inserted into the through groove, the upper edge of the first side surface is welded to the upper edge of the second side surface, and / or the lower edge of the first side surface is welded to the lower edge of the second side surface.

[0007] Furthermore, for two adjacent splicing blocks, a groove is concavely provided on the side of one of the splicing blocks; an assembling part is convexly provided on the side of the other splicing block, and in the horizontal direction, the opposite side surfaces of the assembling part interfere with the opposite side surfaces of the groove, and there is a gap between the upper surface of the groove and the upper surface of the assembling part, and / or there is a gap between the lower surface of the groove and the lower surface of the assembling part.

[0008] Furthermore, a fixing groove is recessed on the side of each splicing block, and an adjustment area is provided between the sides of two adjacent splicing blocks, and the adjustment area is interconnected with the fixing groove; the electrical connector also includes an insulating plastic, and the insulating plastic is filled with the fixing groove and the adjustment area through injection molding to fix multiple splicing blocks.

[0009] Furthermore, two opposite side surfaces of each fixing groove are respectively provided with oblique edges, and the distance between the two oblique edges gradually decreases toward the opening direction.

[0010] Furthermore, every two splicing blocks form a splicing block combination. In each splicing block combination, one of the splicing blocks extends two clamping arms in the horizontal direction. The ends of the two clamping arms are respectively provided with a snap-fitting portion for snapping with the notch of the other splicing block. The two clamping arms also include two positioning portions arranged opposite to each other. The positioning portion and the snap-fitting portion are arranged at intervals in the horizontal direction, and the positioning portion abuts against the side of the other splicing block.

[0011] Furthermore, a through slot is recessed on the side of each splicing block, the through slot passes through the splicing block up and down, and each of the through slots is provided with two stopping portions which are arranged opposite to each other and located at the opening of the through slot; the electrical connector also includes a snap-fit ​​member, the snap-fit ​​member includes a connecting section and snap-fit ​​sections arranged at both horizontal ends of the connecting section; during assembly, in two adjacent splicing blocks, two adjacent through slots are aligned, the snap-fit ​​section is accommodated in the through slot, the connecting section is accommodated between the two stopping portions, and the stopping portion stops the snap-fit ​​section from moving in the horizontal direction.

[0012] The present invention also provides the following technical solutions:

[0013] A method for adjusting the position of multiple splicing blocks of an electrical connector as described above, after multiple splicing blocks are formed by metal powder injection molding, a positioning plate with multiple positioning pins is provided, and the positioning pins are respectively inserted into the same positions of two adjacent splicing blocks to align the terminal holes of the two adjacent splicing blocks in the horizontal direction.

[0014] The present invention also provides a method for manufacturing an electrical connector:

[0015] A method for manufacturing an electrical connector comprises: step a: forming a plurality of splicing blocks by metal powder injection molding, each splicing block having a plurality of rows of terminal holes penetrating from top to bottom; step b: after step a, providing a positioning plate having a plurality of positioning pins, inserting the positioning pins into the terminal holes at the same positions of two adjacent splicing blocks respectively, so that the terminal holes of the two adjacent splicing blocks are aligned in the horizontal direction; step c: after step b, withdrawing the positioning pins from the terminal holes of the splicing blocks, and then assembling the terminals in the terminal holes respectively.

[0016] Furthermore, a fixing groove is recessed on the side of each splicing block, and an adjustment area is provided between the sides of two adjacent splicing blocks, and the adjustment area is connected to the fixing groove; after the terminal holes of two adjacent splicing blocks are aligned in the horizontal direction, insulating plastic is filled into the fixing groove and the adjustment area by injection molding to fix multiple splicing blocks.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The body of the electrical connector is formed by splicing a plurality of splicing blocks, each of which is formed by metal powder injection molding, and the terminal holes of two adjacent splicing plates are kept aligned, thereby reducing the effect of size reduction when the entire body is formed by metal powder injection molding.

Brief Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the assembly process of the splicing block of the electrical connector of the first embodiment of the present invention;

[0020] Figure 2 is a three-dimensional diagram of an electrical connector according to a first embodiment of the present invention;

[0021] Figure 3 is a top view of an electrical connector according to a first embodiment of the present invention;

[0022] Figure 4 is a perspective exploded view of a splicing block of an electrical connector according to a second embodiment of the present invention;

[0023] Figure 5 A three-dimensional diagram of an assembled splicing block of an electrical connector according to a second embodiment of the present invention;

[0024] Figure 6 for Figure 5 A top view of

[0025] Figure 7 is a three-dimensional exploded view of a splicing block of an electrical connector according to a third embodiment of the present invention;

[0026] Figure 8 A top view of an assembled splicing block of an electrical connector according to a third embodiment of the present invention;

[0027] Fig. 9 for Figure 8 Sectional view along AA;

[0028] Fig.10 A cross-sectional view of the electrical connector of the third embodiment of the present invention after the splicing blocks are assembled from another perspective;

[0029] Fig.11 for Fig.10 The enlarged view of point B in the middle;

[0030] Fig.12 It is a three-dimensional exploded view of a splicing block and insulating plastic of an electrical connector according to a fourth embodiment of the present invention;

[0031] Fig.13 It is a three-dimensional diagram of the splicing block and the insulating plastic of the electrical connector after injection molding according to the fourth embodiment of the present invention;

[0032] Fig.14 for Fig.13 A top view of

[0033] Fig.15 is a perspective exploded view of a splicing block of an electrical connector according to a fifth embodiment of the present invention;

[0034] Fig.16 A three-dimensional view of an assembled splicing block of an electrical connector according to a fifth embodiment of the present invention;

[0035] Fig.17 It is a three-dimensional exploded view of a splicing block and a latch of an electrical connector according to a sixth embodiment of the present invention;

[0036] Fig.18 It is a three-dimensional diagram of the assembled splicing block and the buckle member of the electrical connector according to the sixth embodiment of the present invention;

[0037] Fig.19 for Fig.18 A top view of

[0038] Fig. 20 is a perspective exploded view of a splicing block of an electrical connector according to a seventh embodiment of the present invention;

[0039] Fig.21 FIG. 1 is a top view of an assembled splicing block of an electrical connector according to a seventh embodiment of the present invention.

[0040] Description of the accompanying drawings for the specific implementation:

[0041]

[0042] [Specific implementation method]

[0043] In order to facilitate a better understanding of the purpose, structure, characteristics and effects of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods.

[0044] For the sake of accuracy of description, all directions involved in this article are as follows: the extension direction of the X-axis is the front-to-back direction (where the positive direction of the X-axis is the front), the extension direction of the Y-axis is the left-to-right direction (where the positive direction of the Y-axis is the right), and the extension direction of the Z-axis is the up-and-down direction (where the positive direction of the Z-axis is the top). In the present invention, the horizontal direction described includes the front-to-back direction and the left-to-right direction.

[0045] like Figure 1-3As shown, it is an electrical connector of the first embodiment of the present invention, which is used for electrically connecting a chip (not shown, the same below) and a circuit board (not shown, the same below), and the electrical connector 100 includes multiple rows of splicing blocks 1 and multiple terminals, each row of splicing blocks 1 is arranged along the left-right direction, and multiple rows of splicing blocks 1 are arranged along the front-to-back direction (of course, in other embodiments, each row of splicing blocks 1 can also be arranged along the front-to-back direction, and multiple rows of splicing blocks 1 are arranged along the left-to-right direction), and two adjacent splicing blocks 1 are assembled together by splicing; each splicing block 1 is made of metal powder injection molding (MIM), and each splicing block 1 has multiple terminals. Multiple rows of terminal holes 11 that penetrate in the up-down direction; each splicing block 1 has multiple through slots 12 and multiple assembly parts 13, and the through slots 12 and the assembly parts 13 are arranged on opposite sides of the splicing block 1, that is, only the through slots 12 or the assembly parts 13 are arranged on the same side of the same splicing block 1. Of course, in other embodiments, the through slots 12 and the assembly parts 13 can also be arranged on the same side of the same splicing block 1; each of the through slots 12 penetrates the splicing block 1 in the up-down direction and the through slots 12 are rectangular (of course, in other embodiments, the shape of the through slots 12 can also be T-shaped, L-shaped, etc. , trapezoidal, etc., the shape of the through slot 12 can be set according to actual conditions), each through slot 12 has two opposite first side surfaces 121 in the horizontal direction; the assembling portion 13 is rectangular (in other embodiments, the shape of the assembling portion 13 can be set accordingly according to the shape of the through slot 12), and the thickness of the assembling portion 13 in the vertical direction is equal to the thickness of the splicing block 1 (in other embodiments, the thickness of the assembling portion 13 in the vertical direction can also be less than the thickness of the splicing block 1), each assembling portion 13 has two oppositely arranged second side surfaces 131 in the horizontal direction, In the mutually matched through slots 12 and assembling parts 13, the distance between the two second side surfaces 131 is smaller than the distance between the two first side surfaces 121 (in other embodiments, the distance between the two second side surfaces 131 is equal to the distance between the two first side surfaces 121); for two adjacent splicing blocks 1 on the left and right, the assembling part 13 of the right splicing block 1 is inserted leftward into the through slot 12 of the left splicing block 1 (in other embodiments, the assembling part 13 of the left splicing block 1 is inserted rightward into the through slot 12 of the right splicing block 1), so that the terminal holes 11 of the two splicing blocks 1 are aligned in the left-right direction;For two adjacent splicing blocks 1, the assembly portion 13 of the rear splicing block 1 is inserted forward into the through groove 12 of the front splicing block 1 (in other embodiments, the assembly portion 13 of the front splicing block 1 can also be inserted backward into the through groove 12 of the rear splicing block 1), so that the terminal holes 11 of the two splicing blocks 1 are aligned along the front-to-back direction, the first side surface 121 and the second side surface 131 are arranged opposite to each other, and the upper edge of the first side surface 121 and the upper edge of the second side surface 131 opposite to it, and / or the lower edge of the first side surface 121 and the lower edge of the second side surface 131 opposite to it are welded to form a welding point K (in other implementations, the assembly portion 13 and the groove 16 of the two adjacent splicing blocks 1 can also be fixed together by other fixing methods), so that the two adjacent splicing blocks 1 are fixed together. ;

[0046] like Figure 2 As shown in FIG. 3 , the multiple terminals include multiple signal terminals S and multiple ground terminals G. The signal terminals S and the ground terminals G are respectively covered by an insulating member 2 and then respectively assembled in the terminal holes 11 (in other embodiments, the ground terminals G can abut against the inner wall of the terminal hole 11 so that the ground terminals G and the splicing block 1 share a common ground), and the signal terminals S are surrounded by the ground terminals G.

[0047] The manufacturing method of the electrical connector of the first embodiment of the present invention is as follows:

[0048] First, metal powder is mixed with a binder, heated and sintered, and then injected into a mold to form a plurality of identical splicing blocks 1 .

[0049] Secondly, a positioning plate 300 having a plurality of positioning pins 200 is provided, and the positioning pins 200 are respectively inserted into the terminal holes 11 at the same position of two adjacent splicing blocks 1 (such as Figure 1 As shown; of course, in other embodiments, the positioning pin 200 can also be inserted into other holes at the same position of two adjacent splicing blocks 1 (not limited to the terminal hole) to adjust the horizontal distance between the two adjacent splicing blocks 1 so that the terminal holes 11 of the two adjacent splicing blocks 1 are aligned in the horizontal direction; and the assembling portion 13 is inserted into the adjacent through groove 12 in the horizontal direction (in other embodiments, the assembling portion 13 can also be assembled in the through groove 12 in the up and down direction).

[0050] Then, the upper edge of the first side surface 121 and the upper edge of the adjacent second side surface 131 are welded together by a welding head, so as to fix the two adjacent splicing blocks 1 .

[0051] After welding, the signal terminal S and the ground terminal G covered by the insulating member 2 are respectively assembled in the terminal holes 11 .

[0052] like Figure 4-6As shown, the electrical connector of the second embodiment of the present invention (the structures of the signal terminal S, the ground terminal G, and the insulating member 2 in this embodiment are not the focus of the present invention and are the same as those in the first embodiment, so the drawings are not shown again). The difference from the first embodiment is that: each through slot 12 is further provided with two oppositely arranged blocking portions 14, and the two blocking portions 14 are located at the opening of the through slot 12; on opposite sides of each of the assembling portions 13, a clamping portion 15 protrudes horizontally. When assembling adjacent two splicing blocks 1, the assembling portion 13 and the blocking portion 14 are assembled in the through slot 12 in the up-and-down direction. After assembly, the blocking portion 14 blocks the clamping portion 15 from moving horizontally, thereby preventing the adjacent two splicing blocks 1 from separating from each other horizontally (in other embodiments, the clamping portion 15 and the adjacent blocking portion 14 are fixed together by welding or other means).

[0053] As Figure 7-11 shown, the electrical connector of the third embodiment of the present invention (the structures of the signal terminal S, the ground terminal G, and the insulating member 2 in this embodiment are not the focus of the present invention and are the same as those in the first embodiment, so the drawings are not shown again). The difference from the first embodiment is that: a groove 16 is recessed on one side edge of each splicing block 1, and an assembling portion 13 protrudes on the opposite side edge. In other embodiments, the groove 16 and the assembling portion 13 can also be provided on the same side edge; in the horizontal direction, the distance between the opposite side surfaces of the groove 16 is less than the distance between the opposite side surfaces of the assembling portion 13 (as Fig.11 shown, that is, W1 < W2); when assembling adjacent two splicing blocks 1, the assembling portion 13 of one splicing block 1 is inserted into the groove 16 of the other splicing block 1, and the assembling portion 13 and the groove 16 are interference-fitted to fix the adjacent two splicing blocks 1, and there is a gap between the upper surface of the groove 16 and the upper surface of the assembling portion 13, and there is a gap between the lower surface of the groove 16 and the lower surface of the assembling portion 13 (as Fig. 9 shown). In other embodiments, there can also be only a gap between the upper surface of the groove 16 and the upper surface of the assembling portion 13, or only a gap between the lower surface of the groove 16 and the lower surface of the assembling portion 13, which is convenient for adjusting the distance between the adjacent two splicing blocks 1 during splicing.

[0054] As Figure 12-14As shown, it is an electrical connector of the fourth embodiment of the present invention (the structure of the signal terminal S, the ground terminal G and the insulating member 2 of this embodiment is not the focus of the present invention, and they are the same as those of the first embodiment, so the drawings are no longer shown). The difference from the first embodiment is that: the electrical connector also includes an insulating plastic 3; each side of each splicing block 1 is concavely provided with a fixing groove 17, and the two opposite sides of each fixing groove 17 are respectively provided with a bevel 171, and the distance between the two bevels 171 gradually decreases toward the opening direction of the fixing groove 17; there is an adjustment area Q between the sides of two adjacent splicing blocks 1, and the adjustment area Q is connected with the fixing groove 17. When assembling, the adjustment area Q provides an adjustment space for the horizontal adjustment position of the two adjacent splicing blocks 1. After assembly, the insulating plastic 3 is formed around each splicing block 1 by injection molding, and the fluid insulating plastic 3 will flow into the adjustment area Q and the fixing groove 17 to fix each splicing block 1, and the upper and lower surfaces of the splicing block 1 are respectively exposed to the upper and lower surfaces of the insulating plastic 3. In other embodiments, the insulating plastic 3 can also cover the upper and lower surfaces of the splicing block 1.

[0055] like Figure 15-16 As shown, it is an electrical connector of the fifth embodiment of the present invention (the structures of the signal terminal S, the ground terminal G and the insulating member 2 of this embodiment are not the focus of the present invention, and they are the same as those of the first embodiment, so the drawings are no longer shown). The difference from the first embodiment is that: every two splicing blocks 1 form a splicing block combination, and in each splicing block combination, one of the splicing blocks 1 extends two clamping arms 18 in the horizontal direction, and the ends of the two clamping arms 18 are respectively provided with a snap-fitting portion 181 for snapping with the notch R of the other splicing block 1, and the snap-fitting portion 181 is arc-shaped to prevent the other splicing block 1 from colliding with the snap-fitting portion 181 and being damaged when inserted; the two clamping arms 18 also include two positioning portions 182 arranged opposite to each other, and the positioning portion 182 located on the same clamping arm 18 is spaced apart from the snap-fitting portion 181, and the positioning portion 182 abuts against the side of the other splicing block 1.

[0056] like Figure 17-19As shown, the sixth embodiment of the electrical connector of the present invention (the structure of the signal terminal S, the ground terminal G and the insulating member 2 of this embodiment is not the focus of the present invention, and they are the same as those of the first embodiment, so the drawings are no longer shown). The difference from the first embodiment is that: the electrical connector 100 also includes a snap-fit ​​member 4, the snap-fit ​​member 4 includes a connecting section 41 and snap-fit ​​sections 42 arranged at both horizontal ends of the connecting section 41, the connecting section 41 connects the middle parts of the two snap-fit ​​sections 42, so that the snap-fit ​​member 4 is in an I-shape; each side of each splicing block 1 is respectively concavely provided with a through groove 12, the through groove 12 passes through the splicing block 1 up and down, and each of the through grooves 12 is provided with two stopper portions 14 arranged oppositely and located at the opening of the through groove 12; when assembling, in two adjacent splicing blocks 1, the adjacent through grooves 12 are aligned, the snap-fit ​​section 42 is accommodated in the through groove 12, the connecting section 41 is accommodated between the two stopper portions 14, and the stopper portion 14 stops the snap-fit ​​section 42 from moving in the horizontal direction.

[0057] like Figure 20-21 As shown, the seventh embodiment of the electrical connector of the present invention (the structure of the signal terminal S, the ground terminal G and the insulating member 2 of this embodiment is not the focus of the present invention, and they are the same as those of the first embodiment, so the drawings are no longer shown). The difference from the first embodiment is that: a lap arm 19 is provided on one side of each splicing block 1. When assembling, in two adjacent splicing blocks 1, the lap arm 19 of one splicing block 1 passes over the side of the other splicing block 1 and overlaps the upper surface or lower surface of the other splicing block 1. In this embodiment, the lap arm 19 overlaps the upper surface of the other splicing block 1, and then a welding point K is formed by welding to fix the lap arm 19 to the upper surface of the other splicing block 1.

[0058] In summary, the present invention has the following beneficial effects:

[0059] 1. The body of the electrical connector 100 is formed by splicing a plurality of splicing blocks 1. Each splicing block 1 is formed by metal powder injection molding, thereby reducing the effect of size reduction when the entire body is formed by metal powder injection molding.

[0060] 2. The multiple splicing blocks 1 have the same structure and are all produced in a modular manner. The number of splicing blocks 1 can be increased or decreased according to actual conditions, thereby improving the flexibility of electrical connector production and avoiding the tediousness of replacing different molds.

[0061] 3. In the first, third, fourth and seventh embodiments, the positioning pin 200 is inserted into the terminal hole 11 to adjust the distance between two adjacent splicing blocks 1, so that the terminal holes 11 of the two splicing blocks 1 remain aligned, and at the same time, the distance between the terminal holes 11 of the two adjacent splicing blocks 1 is adjusted to ensure that the distance between the terminal holes 11 of the two adjacent splicing blocks 1 is within the designed size range; at the same time, the terminal hole 11 acts as a positioning hole, so that the splicing block 1 does not need to be additionally provided with a positioning hole.

[0062] The above detailed description is only an explanation of the preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.

Claims

1. An electrical connector, characterized in that: include: A plurality of splicing blocks are arranged in a horizontal direction, each splicing block is formed by metal powder injection molding, and has a plurality of rows of terminal holes penetrating vertically, and the terminal holes of two adjacent splicing blocks are aligned in the horizontal direction; Multiple rows of terminals, including signal terminals and ground terminals, are respectively accommodated in the terminal holes.

2. The electrical connector according to claim 1, wherein: For two adjacent splicing blocks, a through groove is recessed on the side of one of the splicing blocks, and the through groove penetrates the splicing blocks in the up-down direction; an assembling portion is convexly disposed on the side of the other splicing block; the through groove and the assembling portion are respectively rectangular, the through groove has two opposite first side surfaces, and the assembling portion has two opposite second side surfaces, the assembling portion is inserted into the through groove, the upper edge of the first side surface is welded to the upper edge of the second side surface, and / or the lower edge of the first side surface is welded to the lower edge of the second side surface.

3. The electrical connector according to claim 1, wherein: For two adjacent splicing blocks, a groove is concavely provided on the side of one of the splicing blocks; an assembling portion is convexly provided on the side of the other splicing block, and in the horizontal direction, the opposite side surfaces of the assembling portion are interference-fitted with the opposite side surfaces of the groove, and there is a gap between the upper surface of the groove and the upper surface of the assembling portion, and / or there is a gap between the lower surface of the groove and the lower surface of the assembling portion.

4. The electrical connector according to claim 1, wherein: A fixing groove is recessed on the side of each splicing block, and an adjustment area is provided between the sides of two adjacent splicing blocks, and the adjustment area is communicated with the fixing groove; the electrical connector also includes an insulating plastic, and the insulating plastic is filled with the fixing groove and the adjustment area through injection molding to fix multiple splicing blocks.

5. The electrical connector according to claim 4, wherein: Two opposite side surfaces of each fixing groove are respectively provided with oblique edges, and the distance between the two oblique edges gradually decreases toward the opening direction.

6. The electrical connector according to claim 1, wherein: Every two splicing blocks form a splicing block combination. In each splicing block combination, one of the splicing blocks extends two clamping arms in the horizontal direction. The ends of the two clamping arms are respectively provided with a snap-fitting portion for snapping with the notch of the other splicing block. The two clamping arms also include two positioning portions arranged opposite to each other. The positioning portions and the snap-fitting portions are arranged at intervals in the horizontal direction, and the positioning portions abut against the side of the other splicing block.

7. The electrical connector according to claim 1, wherein: A through slot is recessed on the side of each splicing block, and the through slot passes through the splicing block up and down, and each of the through slots is provided with two stop parts which are arranged opposite to each other and located at the opening of the through slot; the electrical connector also includes a snap-fit ​​member, and the snap-fit ​​member includes a connecting section and snap-fit ​​sections arranged at both horizontal ends of the connecting section; during assembly, in two adjacent splicing blocks, two adjacent through slots are aligned, the snap-fit ​​section is accommodated in the through slot, and the connecting section is accommodated between the two stop parts, and the stop part stops the snap-fit ​​section from moving in the horizontal direction.

8. A method for adjusting the positions of a plurality of splicing blocks of an electrical connector according to claim 1, characterized in that: After a plurality of splicing blocks are formed by metal powder injection molding, a positioning plate with a plurality of positioning pins is provided, and the positioning pins are respectively inserted into the same positions of two adjacent splicing blocks so that the terminal holes of the two adjacent splicing blocks are aligned in the horizontal direction.

9. A method for manufacturing an electrical connector, characterized in that: include: Step a: forming a plurality of splicing blocks by metal powder injection molding, each splicing block having a plurality of rows of terminal holes penetrating vertically; Step b: after step a, providing a positioning plate with a plurality of positioning pins, inserting the positioning pins into the terminal holes at the same positions of two adjacent splicing blocks respectively, so that the terminal holes of the two adjacent splicing blocks are aligned in the horizontal direction; Step c: After step b, withdraw the positioning pins from the terminal holes of the splicing block, and then assemble the terminals into the terminal holes respectively.

10. The method for manufacturing an electrical connector according to claim 9, wherein: A fixing groove is recessed on the side of each splicing block, and an adjustment area is provided between the sides of two adjacent splicing blocks, and the adjustment area is connected to the fixing groove; after the terminal holes of two adjacent splicing blocks are aligned in the horizontal direction, insulating plastic is filled into the fixing groove and the adjustment area by injection molding to fix multiple splicing blocks.

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