Electric connector

Abstract

The invention discloses an electric connector, and relates to the technical field of connectors, the electric connector comprises an insulating body and a connecting terminal, the insulating body is provided with a plurality of terminal holes arranged in an array, the connecting terminal is formed by combining two sub-terminals with the same structure, each sub-terminal comprises an abutting part and an elastic arm which are integrally connected, and the elastic arm is connected with the abutting part. The two sub-terminals are defined to be a first sub-terminal and a second sub-terminal, the abutting portion of the first sub-terminal is inserted into the terminal hole from bottom to top, the abutting portion of the second sub-terminal is inserted into the terminal hole from top to bottom, and the abutting portion of the second sub-terminal is in contact abutting with the abutting portion of the first sub-terminal. And the elastic arms of the first sub-terminal and the second sub-terminal extend out of the terminal hole. According to the scheme, the elastic arms of the two sub-terminals can be bent and deformed, so that the compression stroke of each elastic arm can be halved, the length of each elastic arm is allowed to be shortened, and the distance between the terminals is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to an electric connector. Background Art

[0002] Electrical connectors are vital components in computer hardware. They are used to provide electrical connections for the central processing unit (CPU) to ensure that the CPU can exchange data and communicate with other components on the motherboard. They are mainly composed of an insulating body and terminals arranged in an array on the insulating body.

[0003] Traditional electrical connectors usually include a substrate and solder ball ends and arm ends arranged at both ends of the substrate. The solder ball ends are melted and welded to the motherboard through solder balls, and the arm ends form stable contact with the CPU through their own compression deformation, thereby realizing the communication connection between the motherboard and the CPU. In order to ensure that the arm end can form a stable contact with the motherboard, the compression stroke of the arm end is required to reach 0.4mm-0.5mm, and in order to meet the requirements of mechanical strength, the maximum width of the substrate is not less than 0.8mm.

[0004] In an electrical connector, each terminal represents an independent data channel. The more terminals there are, the higher the data transmission rate. As CPU performance continues to improve, the requirements for data transmission rates also increase, that is, the demand for the number of terminals also increases. However, as the number of connecting terminals increases, their arrangement density will gradually increase, and the spacing between adjacent terminals will become smaller and smaller, resulting in the thickness of the partition wall between the terminal holes of the insulating body becoming thinner and thinner, which in turn leads to a decrease in the structural strength of the insulating body. Therefore, how to reduce the spacing between the terminals while ensuring the structural strength of the insulating body has always been a problem that the industry has struggled to solve but has not been able to solve. Summary of the invention

[0005] The main purpose of the present invention is to provide an electrical connector, which aims to reduce the spacing between terminals while ensuring the structural strength of the insulating body, thereby increasing the number of terminals and improving data transmission efficiency.

[0006] To achieve the above-mentioned purpose, the electrical connector proposed in the present invention includes an insulating body and a connecting terminal, the insulating body is provided with a plurality of terminal holes arranged in an array, the connecting terminal is composed of two sub-terminals with the same structure, the sub-terminal includes an abutment portion and an elastic arm connected as one piece, and the two sub-terminals are defined as a first sub-terminal and a second sub-terminal, the abutment portion of the first sub-terminal is inserted into the terminal hole from bottom to top, the abutment portion of the second sub-terminal is inserted into the terminal hole from top to bottom, and the abutment portion of the second sub-terminal is in contact with and abuts against the abutment portion of the first sub-terminal, and the elastic arms of the first sub-terminal and the second sub-terminal both extend outward from the terminal hole.

[0007] In one embodiment, the sub-terminal also includes a reinforcing portion, which is arranged on a side of the abutting portion facing the elastic arm and is bent with the abutting portion, and the reinforcing portion extends toward a side where the other sub-terminal is located, and the free end of the reinforcing portion contacts and abuts against the abutting portion of the other sub-terminal.

[0008] In one embodiment, a first limiting bulge is convexly provided on the side of the reinforcing portion facing away from the abutting portion, and a first limiting groove matching the first limiting bulge is recessed on the side wall of the terminal hole, and the first limiting bulge is inserted in the first limiting groove to realize the limiting installation of the reinforcing portion.

[0009] In one embodiment, the sub-terminal also includes a plug-in portion, which is protruding from the end of the abutting portion facing away from the elastic arm, and a plug-in channel is formed between the plug-in portion and the reinforcing portion, and the width of the plug-in channel is consistent with the width of the plug-in portion. The plug-in portion of one sub-terminal is inserted into the plug-in channel of another sub-terminal to abut against the abutting portion of the other sub-terminal.

[0010] In one embodiment, a limiting plate is protruding from the connection between the abutting portion and the elastic arm, and a second limiting groove matching the limiting plate is recessed on the side wall of the terminal hole, and the limiting plate is inserted into the second limiting groove to achieve limiting installation of the abutting portion.

[0011] In one embodiment, a second limiting bulge is convexly provided on the side edge of the plug-in part, and a third limiting groove matching the second limiting bulge is concavely provided on the side wall of the terminal hole, and the second limiting bulge is inserted in the third limiting groove to realize the limiting installation of the plug-in part.

[0012] In one embodiment, a partition block is protruding from the inner wall of the terminal hole, and the partition block divides the terminal hole into a first cavity, a second cavity and a third cavity surrounding the partition block, and the first cavity and the second cavity are located on both sides of the partition block, and the reinforcement portion of one of the first sub-terminal and the second sub-terminal is inserted in the first cavity, and the reinforcement portion of the other one of the first sub-terminal and the second sub-terminal is inserted in the second cavity.

[0013] In one implementation, the maximum width of the connecting terminal is defined as L1, and 0.3 mm ≤ L1 ≤ 0.5 mm.

[0014] In one embodiment, a plurality of rows of terminal holes are arranged in an array in the insulating body, and two adjacent rows of terminal holes are arranged in a staggered manner.

[0015] In one embodiment, the row spacing of the terminal hole array is less than 0.5 mm, and the column spacing of the terminal hole array is less than 0.5 mm.

[0016] The conventional connection terminal only relies on the compression stroke of a single elastic arm to provide the contact force with the CPU, while the elastic arms of the two sub-terminals in this solution can be bent and deformed, so that the compression stroke of each elastic arm can be halved. Since the compression stroke required for each elastic arm is halved, the length of the elastic arm can be shortened, thereby reducing the spacing between the terminals and increasing the arrangement density of the terminals. Moreover, since the amount of compression stroke required for each elastic arm is reduced, the strength requirement for the abutment portion is also reduced, thereby allowing the width of the abutment portion to be reduced accordingly, thereby increasing the density of the terminals without sacrificing the thickness of the terminal hole partition wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 A schematic structural diagram of an embodiment of an electrical connector provided by the present invention;

[0019] Figure 2 A cross-sectional view of a first cross-section of an embodiment of an electrical connector provided by the present invention;

[0020] Figure 3 A cross-sectional view of a second cross-section of an embodiment of an electrical connector provided by the present invention;

[0021] Figure 4 An exploded view of a connecting terminal in an embodiment of an electrical connector provided by the present invention;

[0022] Figure 5 for Figure 4 A schematic diagram of the structure after the connecting terminals are assembled;

[0023] Figure 6 for Figure 5 A side view of a connecting terminal in FIG.

[0024] Figure 7 An exploded view of a connecting terminal in another embodiment of the electrical connector provided by the present invention;

[0025] Figure 8 for Figure 7 A schematic diagram of the structure after the connecting terminals are assembled;

[0026] Fig. 9 for Figure 8 A side view of a connecting terminal in FIG.

[0027] Fig.10 A top view of an insulating body in an embodiment of an electrical connector provided by the present invention.

[0028] Description of Figure Numbers:

[0029] 100. Electrical connector; 1. Insulating body; 11. Terminal hole; 111. First cavity; 112. Second cavity; 113. Third cavity; 12. Separating block; 14. Abutting surface; 2. Connecting terminal; 20. Sub-terminal; 21. Abutting portion; 22. Elastic arm; 23. Reinforcing portion; 231. First limiting convex bump; 24. Insertion portion; 241. Second limiting convex bump; 25. Insertion channel; 26. Limiting piece.

[0030] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] The present invention provides an electrical connector 100 .

[0035] See also Figures 1 to 7 An embodiment of the electrical connector 100 of the present invention includes an insulating body 1 and a connecting terminal 2. The insulating body 1 is provided with a plurality of terminal holes 11 arranged in an array. The connecting terminal 2 is composed of two sub-terminals 20 with the same structure. The sub-terminal 20 includes an abutting portion 21 and an elastic arm 22 that are integrally connected. The two sub-terminals 20 are defined as a first sub-terminal and a second sub-terminal. The abutting portion 21 of the first sub-terminal is inserted into the terminal hole 11 from bottom to top, and the abutting portion 21 of the second sub-terminal is inserted into the terminal hole 11 from top to bottom, and the abutting portion 21 of the second sub-terminal contacts and abuts with the abutting portion 21 of the first sub-terminal. The elastic arms 22 of the first sub-terminal and the second sub-terminal both extend outward from the terminal hole 11.

[0036] The connection terminal in the traditional electrical connector usually includes a substrate and a solder ball end and a force arm end arranged at both ends of the substrate. The solder ball end needs to be melt-welded with the main board through the solder ball to achieve the connection between the terminal and the main board. Different from this, the connection terminal 2 in the present invention is composed of two sub-terminals 20 with the same structure. The two sub-terminals 20 are defined as the first sub-terminal and the second sub-terminal. The first sub-terminal and the second sub-terminal both include an integrally connected abutment portion 21 and an elastic arm 22. When installed, the abutment portion 21 of the first sub-terminal is inserted from bottom to top into the terminal hole 11 of the insulating body 1, and the abutment portion 21 of the second sub-terminal is inserted from top to bottom into the terminal hole 11 of the insulating body 1, so that the abutment portion 21 of the second sub-terminal contacts and abuts with the abutment portion 21 of the first sub-terminal, and the elastic arms 22 of the first sub-terminal and the second sub-terminal both extend outward from the terminal hole 11. When the electrical connector 100 is connected to the motherboard and the CPU, the elastic arm 22 of the first sub-terminal is in contact with the motherboard and is elastically deformed, and the elastic arm 22 of the second sub-terminal is in contact with the CPU and is elastically deformed. The first sub-terminal and the second sub-terminal are stably connected to the motherboard and the CPU through their own elastic forces, without the need for furnace welding, thereby avoiding the risk of motherboard warping caused by the welding process.

[0037] In addition, the conventional connection terminal only relies on the compression stroke of a single elastic arm to provide the contact force with the CPU, while the elastic arms 22 of the two sub-terminals 20 in this solution can be bent and deformed, so that the compression stroke of each elastic arm 22 can be halved. For example, if a single elastic arm of a conventional terminal requires a compression stroke of 0.4mm-0.5mm to achieve stable contact with the motherboard, each elastic arm 22 in this solution only needs a compression stroke of 0.2mm-0.25mm to achieve the same effect. Since the compression stroke required for each elastic arm 22 can be reduced by about half, the length of the elastic arm 22 can be shortened, thereby reducing the spacing between the terminals and increasing the arrangement density of the terminals.

[0038] Moreover, since the required compression stroke of each elastic arm 22 is reduced, the strength requirement of the abutment portion 21 is also reduced, thereby allowing the width of the abutment portion 21 to be reduced accordingly, and further allowing the width of the sub-terminal 20 to be reduced accordingly. After testing, in this technical solution, the maximum width L1 of the connecting terminal 2 (such as Figure 6 and Fig. 9 The maximum width of the assembled connection terminal 2 can be reduced to 0.3mm to 0.5mm, which is much smaller than the 0.8mm width of the conventional terminal. Thus, the density of the terminal can be increased without sacrificing the thickness of the partition wall of the terminal hole 11.

[0039] It is not difficult to understand that if the connecting terminal 2 is designed as an integrally formed structure of the first sub-terminal and the second sub-terminal, then during installation, the connecting terminal 2 must be inserted from one end of the terminal hole 11 so that the elastic arm 22 at the other end extends out, which requires that the size of the terminal hole 11 must be able to accommodate the elastic arm 22. However, the present technical solution designs the connecting terminal 2 to be assembled from two sub-terminals 20 of the same structure, and the abutment portion 21 of the first sub-terminal is inserted into the terminal hole 11 from bottom to top, and the abutment portion 21 of the second sub-terminal is inserted into the terminal hole 11 from top to bottom. The elastic arm 22 does not need to pass through the terminal hole 11, so the size of the terminal hole 11 only needs to meet the installation requirements of the abutment portion 21. Obviously, the smaller the size of the terminal hole 11, the more terminal holes 11 there are when the thickness of the partition wall of the terminal hole 11 remains unchanged, and the more connecting terminals 2 can be installed.

[0040] The array spacing of the terminal holes 11 in the traditional electrical connector is at least 0.8mm*0.8mm, while the present electrical connector has been improved so that the array spacing of the terminal holes 11 is less than 0.5mm*0.5mm, that is, the row spacing of the terminal holes 11 is less than 0.5mm, and the column spacing is also less than 0.5mm. Here, the spacing of the terminal holes 11 refers to the distance from the center point of a terminal hole 11 to the center point of another terminal hole 11. Obviously, the present technical solution increases the arrangement density of the terminal holes 11 and increases the number of the terminal holes 11.

[0041] Reference Figure 4 and Figure 5 In one embodiment of the present invention, the sub-terminal 20 also includes a reinforcing portion 23, which is arranged on a side of the abutting portion 21 facing the elastic arm 22 and is bent with the abutting portion 21, and the reinforcing portion 23 extends toward the side where the other sub-terminal 20 is located, and the free end of the reinforcing portion 23 is in contact with the abutting portion 21 of the other sub-terminal 20.

[0042] In this embodiment, the reinforcing portion 23 and the elastic arm 22 are arranged on the same side of the abutting portion 21, and the reinforcing portion 23 is extended toward the side where the other sub-terminal 20 is located, and the free end of the reinforcing portion 23 is bent toward the abutting portion 21 of the other sub-terminal 20, so that when the two sub-terminals 20 are assembled, the reinforcing portion 23 of the first sub-terminal contacts the abutting portion 21 of the second sub-terminal, and the reinforcing portion 23 of the second sub-terminal contacts the abutting portion 21 of the first sub-terminal. When the first sub-terminal and the second sub-terminal are pressed toward each other, the reinforcing portion 23 of the first sub-terminal will abut against the abutting portion 21 of the second sub-terminal, and the reinforcing portion 23 of the second sub-terminal will abut against the abutting portion 21 of the first sub-terminal, thereby enhancing the mechanical strength of the two sub-terminals 20 and ensuring that the two elastic arms 22 have sufficient resistance to stably contact the motherboard or CPU.

[0043] Among them, a first limiting bulge 231 is convexly provided on the side of the reinforcing portion 23 facing away from the abutting portion 21, and a first limiting groove (not marked) matching the first limiting bulge 231 is recessed on the side wall of the terminal hole 11, and the first limiting bulge 231 is inserted in the first limiting groove to realize the limiting installation of the reinforcing portion 23.

[0044] The insulating body 1 is provided with a first limiting groove matching the first limiting protrusion 231 on the side wall of the terminal hole 11. When the first sub-terminal and the second sub-terminal are inserted into the terminal hole 11, the first limiting protrusion 231 of the first sub-terminal is inserted into the corresponding first limiting groove, and the first limiting protrusion 231 of the second sub-terminal is inserted into the corresponding first limiting groove, thereby realizing the limiting installation of the reinforcement part 23 of the first sub-terminal and the reinforcement part 23 of the second sub-terminal.

[0045] exist Figure 6 and Figure 7 In the illustrated embodiment, the sub-terminal 20 further includes a plug-in portion 24, which is protruding from the end of the abutting portion 21 that is away from the elastic arm 22, and a plug-in channel 25 is formed between the plug-in portion 24 and the reinforcing portion 23, and the width of the plug-in channel 25 is consistent with the width of the plug-in portion 24. The plug-in portion 24 of one sub-terminal 20 is inserted into the plug-in channel 25 of another sub-terminal 20 to abut against the abutting portion 21 of the other sub-terminal 20.

[0046] During assembly, the plug-in portion 24 of the first sub-terminal is inserted into the plug-in channel 25 of the second sub-terminal and abuts against the abutment portion 21 of the second sub-terminal, and the plug-in portion 24 of the second sub-terminal is inserted into the plug-in channel 25 of the first sub-terminal and abuts against the abutment portion 21 of the first sub-terminal, thereby achieving interlocking of the two sub-terminals 20. The interlocking design of the two sub-terminals can make the connection between the two sub-terminals more stable and reduce the possibility of the two sub-terminals 20 being offset or falling off.

[0047] Optionally, a limiting piece 26 is convexly provided at the connection between the abutting portion 21 and the elastic arm 22, and a second limiting groove matching the limiting piece 26 is recessed in the side wall of the terminal hole 11, and the limiting piece 26 is inserted in the second limiting groove to achieve limited installation of the abutting portion 21.

[0048] The insulating body 1 is provided with a second limiting groove (not marked) matching the limiting piece 26 on the side wall of the terminal hole 11. When the first sub-terminal and the second sub-terminal are inserted into the terminal hole 11, the limiting piece 26 of the first sub-terminal is inserted into the corresponding second limiting groove, and the limiting piece 26 of the second sub-terminal is inserted into the corresponding second limiting groove, thereby realizing the limiting installation of the abutting portion 21 of the first sub-terminal and the abutting portion 21 of the second sub-terminal.

[0049] Furthermore, a second limiting convex bump 241 is convexly provided on the side edge of the plug-in portion 24, and a third limiting groove matching the second limiting convex bump 241 is recessed on the side wall of the terminal hole 11, and the second limiting convex bump 241 is inserted into the third limiting groove to achieve the limiting installation of the plug-in portion 24.

[0050] The insulating body 1 is provided with a third limiting groove (not marked) matching the second limiting protrusion 241 on the side wall of the terminal hole 11. When the first sub-terminal and the second sub-terminal are inserted into the terminal hole 11, the second limiting protrusion 241 of the first sub-terminal is inserted into the corresponding third limiting groove, and the second limiting protrusion 241 of the second sub-terminal is inserted into the corresponding third limiting groove, thereby realizing the limited installation of the plug-in portion 24 of the first sub-terminal and the plug-in portion 24 of the second sub-terminal.

[0051] Reference Figure 8 , a partition block 12 is protruding from the inner wall of the terminal hole 11, and the partition block 12 divides the terminal hole 11 into a first cavity 111, a second cavity 112 and a third cavity 113 surrounding the partition block 12, and the first cavity 111 and the second cavity 112 are located on both sides of the partition block 12. During installation, the abutting portion 21 of the first sub-terminal is inserted into the third cavity 113 from bottom to top, and the abutting portion 21 of the second sub-terminal is inserted into the third cavity 113 from top to bottom to contact and abut with the abutting portion 21 of the first sub-terminal, and the reinforcing portion 23 of one of the first sub-terminal and the second sub-terminal is inserted into the first cavity 111, and the reinforcing portion 23 of the other of the first sub-terminal and the second sub-terminal is inserted into the second cavity 112, so as to prevent the first sub-terminal and the second sub-terminal from being offset during installation.

[0052] In the present electrical connector 100, multiple rows of terminal holes 11 are arranged in an array in the insulating body 1, and two adjacent rows of terminal holes 11 are arranged in a staggered manner. For example, the first row of terminal holes 11 is provided with 5, and the second row of terminal holes 11 is provided with 4, then the four terminal holes 11 in the second row are arranged in a staggered manner with the five terminal holes 11 in the first row, and in this circular array, the force arms of the two adjacent rows of connecting terminals 2 can be prevented from interfering with each other, which can not only improve the space utilization of the insulating body 1, further increase the number of connecting terminals 2, but also avoid signal crosstalk.

[0053] Furthermore, the projected length of the elastic arm 22 on the insulating body 1 is just equal to the distance between two terminal holes 11 arranged opposite to each other, so that the arrangement of the connecting terminals 2 can be more compact, further improving the space utilization of the insulating body 1 .

[0054] It is not difficult to understand that the elastic arm 22 will extend forward for a distance when it is compressed. In order to avoid the elastic arm 22 from bending too much when it is compressed, the elastic arm 22 may extend too long and short-circuit with the previous connection terminal 2, the insulating body 1 is provided with oblique cuts on the side walls of the terminal hole 11 at both ends to form an inclined abutment surface 14, such as Figure 2 As shown, the inclination angle of the abutting surface 14 is consistent with the inclination angle of the elastic arm 22 in the natural state. When the elastic arm 22 is compressed and bent to a certain angle, the elastic arm 22 contacts and abuts against the abutting surface 14, and the abutting surface 14 has a blocking and limiting effect on the elastic arm 22, thereby preventing the bending angle of the elastic arm 22 from being too large, and avoiding the elastic arm 22 from contacting and short-circuiting with the previous connection terminal 2.

[0055] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electrical connector, characterized in that: include: An insulating body, wherein the insulating body is provided with a plurality of terminal holes arranged in an array; A connecting terminal, the connecting terminal is composed of two sub-terminals with the same structure, the sub-terminal includes an abutment portion and an elastic arm connected in one piece, and the two sub-terminals are defined as a first sub-terminal and a second sub-terminal, the abutment portion of the first sub-terminal is inserted into the terminal hole from bottom to top, the abutment portion of the second sub-terminal is inserted into the terminal hole from top to bottom, and the abutment portion of the second sub-terminal is in contact with and abuts against the abutment portion of the first sub-terminal, and the elastic arms of the first sub-terminal and the second sub-terminal both extend outward from the terminal hole.

2. The electrical connector according to claim 1, wherein: The sub-terminal also includes a reinforcing portion, which is arranged on a side of the abutting portion facing the elastic arm and is bent with the abutting portion, and the reinforcing portion extends toward a side where the other sub-terminal is located, and the free end of the reinforcing portion contacts and abuts against the abutting portion of the other sub-terminal.

3. The electrical connector according to claim 2, wherein: A first limiting bulge is convexly provided on the side of the reinforcing portion away from the abutting portion, and a first limiting groove matching the first limiting bulge is concavely provided on the side wall of the terminal hole, and the first limiting bulge is inserted in the first limiting groove to realize the limiting installation of the reinforcing portion.

4. The electrical connector according to claim 2, wherein: The sub-terminal also includes an inserting portion, which is protruding from the end of the abutting portion away from the elastic arm, and an inserting channel is formed between the inserting portion and the reinforcing portion, and the width of the inserting channel is consistent with the width of the inserting portion. The inserting portion of one sub-terminal is inserted into the inserting channel of another sub-terminal to abut against the abutting portion of the other sub-terminal.

5. The electrical connector according to claim 2 or 4, characterized in that: A limiting piece is convexly provided at the connection between the abutting portion and the elastic arm, and a second limiting groove matching the limiting piece is concavely provided on the side wall of the terminal hole, and the limiting piece is inserted into the second limiting groove to realize the limiting installation of the abutting portion.

6. The electrical connector according to claim 4, wherein: A second limiting convex bump is convexly provided on the side edge of the plug-in part, and a third limiting groove matching the second limiting convex bump is concavely provided on the side wall of the terminal hole, and the second limiting convex bump is inserted in the third limiting groove to realize the limiting installation of the plug-in part.

7. The electrical connector according to claim 2, wherein: A partition block is protruding from the inner wall of the terminal hole, and the partition block divides the terminal hole into a first cavity, a second cavity and a third cavity surrounding the partition block, and the first cavity and the second cavity are located on both sides of the partition block, and the reinforcement portion of one of the first sub-terminal and the second sub-terminal is inserted in the first cavity, and the reinforcement portion of the other one of the first sub-terminal and the second sub-terminal is inserted in the second cavity.

8. The electrical connector according to claim 1, wherein: The maximum width of the connecting terminal is defined as L1, 0.3 mm ≤ L1 ≤ 0.5 mm.

9. The electrical connector according to claim 1, wherein: The insulating body has a plurality of rows of terminal holes arranged in an array, and two adjacent rows of terminal holes are arranged in a staggered manner.

10. The electrical connector according to claim 1, wherein: The row spacing of the terminal hole array arrangement is less than 0.5 mm, and the column spacing of the terminal hole array arrangement is less than 0.5 mm.

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