A terminal installation method for a connector

Abstract

The present invention discloses a connector and an assembly method. The connector includes a terminal, a terminal seat, a wire, and a wire terminal. A through hole is provided in the middle of the conductive part of the terminal; a slot is provided on the front end face of the terminal seat along the X-axis direction, terminal slots are provided on the opposite side walls of the slot, and a positioning slot penetrating the terminal seat is provided on the terminal seat along the Y-axis direction, and the positioning slot passes through the terminal slot; the cross-sectional shape of the positioning part of the wire end is adapted to the through hole and the positioning slot on the terminal; one end of the wire is inserted into the wire slot, and is fixed and conductively connected with the wire terminal; the wire terminal is inserted from one end of the positioning slot, and the guide part sequentially passes through the through holes of the two terminals and then extends from the other end of the positioning slot. The present invention forms a stable whole by plugging and matching the positioning part with the positioning slot and the through hole of the terminal without any looseness. The present invention is easy to install and is convenient for realizing automated assembly line operation.

Description

Technical field:

[0001] The present invention relates to the technical field of connectors, and in particular to a method for installing connector terminals. Background technology:

[0002] A connector (also often called a circuit connector or electrical connector) is a conductor device that bridges two conductors in a loop so that current or signal can flow from one conductor to another.

[0003] See the Chinese invention patent application with patent application number: 202410116917.1, which discloses a terminal fixing method in a connector. Figure 1 , Figure 2 As shown, the technical solution adopted in the invention patent application is: the terminal installation method of the connector is: the elastic contact arm at the upper part of the terminal 11 is installed into the terminal groove of the insulating seat 12, and the lower end of the terminal 11 is partially placed outside the insulating seat 12. At this time, the threading hole at the lower part of the terminal 11 corresponds to the through hole set at the lower part of the insulating seat 12; then the wire 13 is inserted into the through hole of the insulating seat 12 and passes through the threading hole, and finally the pressure head 14 is used to press the plane of the lower end of the terminal 11 outside the insulating seat 12, and the terminal 11 is completely inserted and riveted to the terminal groove of the insulating seat 12, so that the elastic contact arm is exposed in the docking groove of the insulating seat 12, and the lower part of the terminal is connected with the threading hole and the clamping hole whose size is smaller than the threading hole pierces the outer skin of the wire to connect with the internal conductor of the wire.

[0004] The applicant of the above invention patent document is an affiliated company of the present applicant. The present applicant found the following problems during the testing of the technical solution:

[0005] First, when the pressure head 14 presses against the lower end of the terminal 11, the threading hole needs to pierce the insulation of the wire 13. Since the wire 13 is soft, when the threading hole acts on the wire, the wire is easily deformed and bent by the pressure, resulting in the outer skin of the wire not being pierced, causing a circuit break. In order to solve this problem, it is usually necessary to completely extend the wire out of the through hole of the insulating seat 12, and apply a clamping and positioning force at the end to ensure that the wire remains in a straight state as much as possible when it is pierced.

[0006] Secondly, the technical solution requires the use of a pressing head 14, so the connector can only be installed in the product after the connector is assembled, which brings inconvenience to the automated operation.

[0007] Finally, the terminals are fixed by means of a snap-in connection with the terminal slots. However, after the connector has been used for a long time, frequent plugging and unplugging may cause the terminals to loosen and move backwards, which may eventually lead to poor contact.

[0008] In view of this, the inventors have further improved the above technical solution and proposed the following technical solution. Summary of the invention:

[0009] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a connector that is easy to assemble and has a stable structure and an assembling method of the connector.

[0010] In order to solve the above technical problems, the connector of the present invention adopts the following technical solutions: a connector, comprising a terminal, a terminal seat made of insulating material, a wire, and a wire terminal connected to the wire, wherein the terminal comprises: a conductive portion and an elastic contact arm integrally extending along the conductive portion, and a through hole is provided in the middle of the conductive portion; a slot for inserting an external plug is provided on the front end surface of the terminal seat along the X-axis direction, terminal grooves for inserting the terminal are provided on the opposite side walls of the slot, and the terminal grooves penetrate the terminal seat along the X-axis direction, and a positioning groove penetrating the terminal seat is provided on the terminal seat along the Y-axis direction. The positioning groove passes through the terminal groove; the wire terminal includes an integrally formed limiting portion, a positioning portion and a guiding portion, and the wire terminal has a wire groove that passes through the limiting portion, the positioning portion and the guiding portion in sequence, and the cross-sectional shape of the positioning portion is adapted to the through-hole and positioning on the terminal; one end of the wire is inserted into the wire groove and fixed and connected to the wire terminal; the two terminals are symmetrically distributed and inserted along the side of the terminal groove away from the slot opening, and the contact position on the contact arm is located in the slot; the wire terminal is inserted from one end of the positioning groove, and the guiding portion passes through the through-holes of the two terminals in sequence and then extends from the other end of the positioning groove.

[0011] Furthermore, in the above technical solution, a limited step portion is formed between the conductive portion of the terminal and the contact arm.

[0012] Furthermore, in the above technical solution, fastening protrusions which are interference fit with the terminal grooves are formed on both sides of the conductive portion.

[0013] Furthermore, in the above technical solution, the limiting portion of the wire terminal is a flange formed on the end face of the positioning portion, and an insert extending toward the positioning portion is formed on the limiting portion, and the end of the positioning groove forms a fastening groove that cooperates with the insert.

[0014] Furthermore, in the above technical solution, a wedge-shaped block is formed on the side of the insert.

[0015] Furthermore, in the above technical solution, a spacing groove is provided between the positioning portion and the guiding portion, and the guiding portion can be bent inwardly along the spacing groove and clamp the wire in the wire groove.

[0016] Furthermore, in the above technical solution, the guide portion has a guide slope, and the guide slope faces the opening of the slot.

[0017] Furthermore, in the above technical solution, an elastic clamping piece is formed on the inner wall of the positioning portion, and the wire in the wire groove is clamped by the elastic clamping piece.

[0018] The connector assembly method of the present invention adopts the following technical scheme: first, two terminals are inserted into the terminal groove as a group and are symmetrically distributed along the side of the terminal groove away from the slot opening, and the fastening protrusion formed on the guide portion is stopped after the interference between the terminal groove and the fastening protrusion formed on the guide portion. At this time, the perforation and the positioning groove are not completely aligned, and the diameter of the perforation that has entered the positioning groove is larger than the cross-section of the front end of the guide portion; secondly, the wire terminal is inserted from one end of the positioning groove, and the guide portion is sequentially passed through the perforations of the two terminals and then extends from the other end of the positioning groove. During the process of inserting the wire terminal into the positioning groove, the extrusion effect formed by the guide inclined surface on the guide portion on the terminal perforation is used to push the wire terminal into the positioning groove. The movable terminal continues to extend along the terminal slot until the limiting portion of the wire terminal is blocked at the end of the positioning slot, and the insert on the limiting portion is inserted into the fastening slot formed by the end of the positioning slot. At this time, the wire terminal is fully inserted into the positioning slot, and the terminal is fully inserted into the terminal slot under the push of the wire terminal; then, after stripping the insulation layer of one end of the wire, insert it into the wire slot of the wire terminal from one end of the guide portion, and clamp the wire in the wire slot through the elastic clamping piece formed on the positioning portion. Finally, using the spacing slot set between the positioning portion and the guide portion, the guide portion is bent inward along the spacing slot, and the wire in the wire slot is clamped and fixed.

[0019] The assembly method of the connector of the present invention can also adopt the following technical scheme: the assembly method of the connector includes the following steps: first, two terminals are inserted into the terminal slot as a group and are symmetrically distributed along the side of the terminal slot away from the slot opening, and the fastening protrusions formed on the guide part are stopped after the interference between the fastening protrusions and the terminal slot is formed. At this time, the perforation and the positioning slot are not completely aligned, and the diameter of the perforation that has entered the positioning slot is larger than the cross-section of the front end of the guide part; then, after stripping the insulation layer of one end of the wire, the wire passes through the positioning slot and the perforation of the terminal from one end of the positioning slot, and the wire passing through the positioning slot is inserted into the wire slot of the wire terminal from one end of the guide part, and the wire in the wire slot is clamped by the elastic clamping piece formed on the positioning part; then Finally, insert the wire terminal into the positioning groove along the protruding end of the wire, make the guide part pass through the through holes of the two terminals in sequence and then extend from the other end of the positioning groove. During the insertion of the wire terminal into the positioning groove, the terminal is pushed to continue to extend along the terminal groove by utilizing the extrusion effect formed by the guiding inclined surface on the guide part on the terminal through hole, until the limiting part of the wire terminal is blocked at the end of the positioning groove, and the insert piece on the limiting part is inserted into the fastening groove formed by the end of the positioning groove. At this time, the wire terminal is fully inserted into the positioning groove, and the terminal is fully inserted into the terminal groove under the push of the wire terminal; finally, utilizing the spacing groove set between the positioning part and the guide part, bend the guide part inward along the spacing groove, and clamp and fix the wire in the wire groove.

[0020] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0021] Firstly, the shape of the positioning portion of the wire terminal of the present invention is adapted to the through-hole on the terminal and the positioning groove on the terminal seat, so that after the connector is installed, the positioning portion can form a tight fit with the positioning groove, and at the same time, the positioning portion is plugged into and fit with the through-hole of the terminal, and the two are intertwined with each other to form a stable whole with the terminal seat. Before the entire wire terminal is pulled out, the entire connector will not loosen at all. Even if it is used for a long time and frequently plugged in and out, the terminal will not be displaced due to the limit of the wire terminal.

[0022] Secondly, the wires in the present invention do not adopt a puncturing connection method, but directly use wire terminals to fix and connect the wires, which is convenient for installation.

[0023] Furthermore, the terminals in the present invention are easy to plug in and can be fully inserted by pushing the wire terminals, without the need to use external pressing blocks to press the terminals, thereby reducing damage to the terminals.

[0024] Finally, the present invention can fix the terminal seat on the circuit board and the base before transferring, which is convenient for realizing automated assembly line operation without the need for fixed connection with the circuit board and the base after assembly. Description of the drawings:

[0025] Figure 1 It is a stereogram of a connector in the prior art;

[0026] Figure 2 This is a schematic diagram of connector assembly in the prior art;

[0027] Figure 3 It is a front view of the wire terminal in the present invention;

[0028] Figure 4 is a three-dimensional diagram of the terminal group in the present invention;

[0029] Figure 5 It is a schematic diagram of the assembly of the present invention;

[0030] Figure 6 is a cross-sectional view of the present invention after assembly;

[0031] Figure 7 yes Figure 6 AA section view. Specific implementation method:

[0032] The present invention is further described below in conjunction with specific embodiments and drawings.

[0033] The present invention is a connector, which is improved based on the prior art (Chinese invention patent application with patent application number 202410116917.1).

[0034] See Figures 5 to 7 As shown, the present invention comprises: a terminal 2, a terminal seat 3 made of insulating material, a wire 4, and a wire terminal 5 connected to the wire 4.

[0035] The terminal seat 3 adopts a structure basically the same as that of the prior art, and a slot 31 is provided on the front end surface of the terminal seat 3 along the X-axis direction. The slot 31 is for inserting an external plug, and the depth of the slot 31 corresponds to the length of the external plug. Terminal slots 32 for inserting the terminals 2 are provided on the opposite side walls of the slot 31, and the terminal slots 32 penetrate the terminal seat 3 along the X-axis direction. Among them, multiple groups of terminal slots 32 are provided in the slot 31, and two opposite terminal slots constitute a group, each for inserting two terminals, and the two terminals in the group will be connected through the same wire terminal 5. A fixing foot 33 is integrally formed on the outer side wall of the terminal seat 3, and the fixing foot 33 is used to fix the terminal seat 3 on the circuit board 6 or the related base to form a socket that matches the plug.

[0036] A feature of the present invention that is different from the prior art is that a positioning groove 30 is provided in the terminal seat 3 along the Y-axis direction and passes through the terminal groove 32. The positioning groove 30 is for the wire terminal 5 to be inserted and positioned therewith.

[0037] During installation, the two terminals 2 are symmetrically distributed and inserted along the terminal groove 32 away from the opening of the slot 31, and the contact position 220 on the contact arm 22 is located in the slot 31; the wire terminal 5 is inserted from one end of the positioning groove 30, and the guide portion 53 passes through the through holes 20 of the two terminals in turn and then extends from the other end of the positioning groove 30.

[0038] Combination Figure 4 As shown, the terminal 2 comprises: a conductive portion 21 and an elastic contact arm 22 integrally extending along the conductive portion 21. The width of the conductive portion 21 is greater than the width of the contact arm 22, and a through hole 20 is provided in the middle of the conductive portion 21. A contact position 220 for contacting a terminal in an external plug is formed at the front end of the contact arm 22. The contact position 220 has an arc surface that bends inward.

[0039] A limiting step portion 23 is formed between the conductive portion 21 of the terminal 2 and the contact arm 22. When the terminal 2 is fully inserted into the terminal slot 32, the limiting step portion 23 interferes with the step limiting portion in the terminal slot 32 to achieve positioning of the two.

[0040] In addition, the two sides of the conductive portion 21 are formed with fastening protrusions 210 that are interference-fitted with the terminal groove 32. The fastening protrusions 210 are different from the barb structure in the existing terminal. They are only fastening protrusions. Their functions are: Figure 5 As shown, when the terminal 2 is inserted into the terminal slot 32, the insertion stage has just begun, and the terminal slot 32 has not yet formed an interference fit with the fastening protrusion 210, and the terminal 2 can easily complete the initial insertion; when the terminal 2 is inserted into the specified position, the terminal slot 32 forms an interference fit with the fastening protrusion 210. At this time, if there is no large external force, the terminal 2 will not be able to continue to be inserted. In this way, it can be ensured that the terminal 2 completes the initial insertion state and waits for the insertion of the wire terminal 5, avoiding the terminal 2 not being inserted in place, causing the aperture of the through hole 20 entering the positioning slot 30 to be smaller than the cross-section of the front end of the guide portion 53, resulting in the subsequent wire terminal 5 being unable to pass through the positioning slot 30.

[0041] Combination Figure 4 As shown, the wire terminal 5 comprises a limiting portion 51, a positioning portion 52 and a guiding portion 53 which are integrally formed, and the wire terminal 5 has a wire groove 50 which passes through the limiting portion 51, the positioning portion 52 and the guiding portion 53 in sequence.

[0042] The limiting portion 51 of the wire terminal 5 is a flange formed on the end surface of the positioning portion 52, and a plug 511 extending toward the positioning portion 52 is formed on the limiting portion 51, and the end of the positioning groove 30 forms a fastening groove 301 that cooperates with the plug 511. A wedge-shaped block 512 is formed on the side of the plug 511. When the wire terminal 5 is fully inserted into the positioning groove 30, the plug 511 is also inserted into the fastening groove 301 at the end of the positioning groove 30, thereby forming a further fastened position.

[0043] The cross-sectional shape of the positioning portion 52 is adapted to the through hole 20 and the positioning groove 30 on the terminal 2, so that after the connector is installed, the positioning portion 52 can form a tight fit with the slot 31. At the same time, the positioning portion 52 is also plugged and matched with the through hole 20, and the two intersect with each other to form a stable whole with the terminal seat 3. Before the entire wire terminal 5 is pulled out, the entire connector will not be loose at all. Even if it is used for a long time and frequently plugged and unplugged, the terminal 2 is restricted by the limit of the wire terminal 5 and will not be displaced.

[0044] The inner wall of the positioning portion 52 is formed with an elastic clamping piece 521, and the wire 4 in the wire groove 50 is clamped by the elastic clamping piece 521. The elastic clamping piece 521 can be directly formed by cutting and then bending the side wall of the positioning portion 52. The elastic clamping piece 521 not only has the function of elastically contacting the wire 4, but also forms a "barb" structure by utilizing its bending direction, so that after the wire 4 is inserted, it will be difficult to pull out under the action of the elastic clamping piece 521.

[0045] The guide portion 53 has a guide slope 530. It should be noted that when the wire terminal 5 is inserted into the positioning groove 30, the guide slope 530 should face the opening of the slot 31, so that the guide slope 530 can be used to push the terminal 2 forward and continue to extend. A spacing groove 54 is provided between the positioning portion 52 and the guide portion 53. The guide portion 53 can be bent inward along the spacing groove 54 and clamp the wire 4 in the wire groove 50.

[0046] One end of the wire 4 is inserted into the wire groove 50, and fixed and connected with the wire terminal 5. In order to achieve the fixation and connection between the wire 4 and the wire terminal 5. During the docking process between the wire 4 and the wire terminal 5, the insulation layer 41 should be stripped off at one end of the wire 4, and then the guide part 53 should be inserted into the wire groove 50 of the wire terminal 5. The wire 4 in the wire groove 50 is clamped and connected by the elastic clamping piece 521 formed on the positioning part 52, and the connection is formed. Finally, the spacing groove 54 can be used to bend the guide part 53 inward along the spacing groove 54, so as to clamp the wire 4 in the wire groove 50 and form a further connection. The clamping position can further ensure the connection by soldering.

[0047] The wire terminal 5 is formed by stamping and bending a metal sheet, wherein the limiting portion 51 and the positioning portion 52 are bent into a cylindrical shape, and the guide portion 53 can be formed into an open groove shape for the convenience of subsequent bending and clamping.

[0048] Combination Figures 5 to 7 As shown, the assembly method of the present invention is as follows:

[0049] First, two terminals 2 are inserted as a group in a symmetrical distribution along the side of the terminal groove 32 away from the opening of the slot 31, and the insertion stops after the fastening protrusions 210 formed on the guide portion 21 interfere with the terminal groove 32. In actual assembly, during this initial insertion process of the terminal 2, since the fastening protrusions 210 have not yet interfered with the terminal groove 32, it is very convenient to insert without the help of other external devices. At this time, the through hole 20 and the positioning groove 30 are not fully aligned, and the aperture of the through hole 20 that has entered the positioning groove 30 is larger than the cross section of the front end of the guide portion 53.

[0050] Secondly, insert the wire terminal 5 from one end of the positioning groove 30, and make the guide part 53 pass through the through holes 20 of the two terminals 2 in sequence and then extend from the other end of the positioning groove 30. During the insertion of the wire terminal 5 into the positioning groove 30, the guiding inclined surface 530 on the guiding part 53 is used to squeeze the through holes 20 of the terminal 2, so as to push the terminal 2 to continue to extend along the terminal groove 32 until the limiting part 51 of the wire terminal 5 is blocked at the end of the positioning groove 30, and the insert piece 511 on the limiting part 51 is inserted into the fastening groove 301 formed at the end of the positioning groove 30. At this time, the wire terminal 5 is fully inserted into the positioning groove 30, and the terminal 2 is fully inserted into the terminal groove 32 under the push of the wire terminal 5.

[0051] Then, after the insulation layer 41 is stripped off one end of the wire 4 , the wire is inserted into the wire groove 50 of the wire terminal 5 from one end of the guide portion 53 , and the wire 4 in the wire groove 50 is connected and clamped by the elastic clamping piece 521 formed on the positioning portion 52 .

[0052] Finally, by utilizing the spacing groove 54 provided between the positioning portion 52 and the guiding portion 53 , the guiding portion 53 is bent inward along the spacing groove 54 , and the conductive wire 4 in the conductive wire groove 50 is clamped and fixed.

[0053] The above installation method is to first insert the wire terminal 5 and then insert the wire 4. This method is convenient for implementing automation. Figure 6 As shown, the terminal seat 3 can be first fixed on the circuit board 6 or the base through the fixing foot 33, and then the terminal 2 and the wire terminal 5 are inserted in sequence through the automated equipment, and then the wire 4 is inserted into the wire terminal 5 from bottom to top, and finally the guide part 53 is bent to clamp the wire 4.

[0054] The present invention can also adopt another assembly method, that is, first insert the wire 4, and then insert the wire terminal 5. This assembly method includes the following steps:

[0055] First, two terminals 2 are inserted as a group in a symmetrical distribution along the side of the terminal groove 32 away from the opening of the slot 31, and the fastening protrusions 210 formed on the guide portion 21 interfere with the terminal groove 32, and then stop. At this time, the through hole 20 and the positioning groove 30 are not completely aligned, and the aperture of the through hole 20 that has entered the positioning groove 30 is larger than the cross section of the front end of the guide portion 53;

[0056] Next, after stripping off the insulation layer 41 at one end of the wire 4, the wire 4 is passed through the positioning groove 30 and the through hole 20 of the terminal 2 from one end of the positioning groove 30, and the wire 4 passing through the positioning groove 30 is inserted into the wire groove 50 of the wire terminal 5 from one end of the guide portion 53, and the wire 4 in the wire groove 50 is connected and clamped by the elastic clamping piece 521 formed on the positioning portion 52;

[0057] Then, the wire terminal 5 is inserted into the positioning groove 30 along the extended end of the wire 4, and the guide portion 53 is sequentially passed through the through holes 20 of the two terminals 2 and then extended from the other end of the positioning groove 30. During the insertion of the wire terminal 5 into the positioning groove 30, the guide inclined surface 530 on the guide portion 53 exerts an extrusion effect on the through hole 20 of the terminal 2, and the terminal 2 is pushed to continue to extend along the terminal groove 32 until the limiting portion 51 of the wire terminal 5 is blocked at the end of the positioning groove 30, and the inserting piece 511 on the limiting portion 51 is inserted into the fastening groove 301 formed at the end of the positioning groove 30. At this time, the wire terminal 5 is completely inserted into the positioning groove 30, and the terminal 2 is completely inserted into the terminal groove 32 under the push of the wire terminal 5.

[0058] Finally, by utilizing the spacing groove 54 provided between the positioning portion 52 and the guiding portion 53 , the guiding portion 53 is bent inward along the spacing groove 54 , and the conductive wire 4 in the conductive wire groove 50 is clamped and fixed.

[0059] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A connector, comprising: A terminal (2), a terminal seat (3) made of insulating material, a wire (4), and a wire terminal (5) connected to the wire (4), characterized in that: The terminal (2) comprises: a conducting portion (21) and an elastic contact arm (22) integrally extending along the conducting portion (21), and a through hole (20) is provided in the middle of the conducting portion (21); The front end surface of the terminal seat (3) is provided with a slot (31) for inserting an external plug along the X-axis direction, and terminal grooves (32) for inserting the terminal (2) are provided on opposite side walls of the slot (31), and the terminal groove (32) passes through the terminal seat (3) along the X-axis direction, and a positioning groove (30) is provided on the terminal seat (3) along the Y-axis direction and passes through the terminal seat (3), and the positioning groove (30) passes through the terminal groove (32); The wire terminal (5) comprises an integrally formed limiting portion (51), a positioning portion (52) and a guiding portion (53), and the wire terminal (5) has a wire groove (50) that passes through the limiting portion (51), the positioning portion (52) and the guiding portion (53) in sequence, and the cross-sectional shape of the positioning portion (52) is adapted to the through hole (20) and the positioning groove (30) on the terminal (2); One end of the wire (4) is inserted into the wire groove (50) and fixed and connected to the wire terminal (5); The two terminals (2) are symmetrically distributed and inserted along the terminal groove (32) away from the opening of the slot (31), and the contact position (220) on the contact arm (22) is located in the slot (31); the wire terminal (5) is inserted from one end of the positioning groove (30), and the guide portion (53) passes through the through holes (20) of the two terminals in sequence and then extends from the other end of the positioning groove (30).

2. A connector according to claim 1, characterized in that: A limited step portion (23) is formed between the conducting portion (21) and the contact arm (22) of the terminal (2).

3. A connector according to claim 2, characterized in that: Fastening protrusions (210) which are interference-fitted with the terminal grooves (32) are formed on both sides of the conductive portion (21).

4. A connector according to claim 1, characterized in that: The limiting portion (51) of the wire terminal (5) is a flange formed at the end of the positioning portion (52), and an insert (511) extending in the direction of the positioning portion (52) is formed on the limiting portion (51), and the end of the positioning groove (30) forms a fastening groove (301) that cooperates with the insert (511).

5. A connector according to claim 4, characterized in that: A wedge-shaped clamping block (512) is formed on the side of the inserting piece (511).

6. A connector according to claim 1, characterized in that: A spacing groove (54) is provided between the positioning portion (52) and the guiding portion (53), and the guiding portion (53) can be bent inwardly along the spacing groove (54) and clamp the wire (4) in the wire groove (50).

7. A connector according to claim 6, characterized in that: The guide portion (53) has a guide slope (530), and the guide slope (530) faces the opening of the slot (31).

8. A connector according to claim 1, characterized in that: An elastic clamping piece (521) is formed on the inner wall of the positioning portion (52), and the wire (4) in the wire groove (50) is clamped by the elastic clamping piece (521).

9. A connector according to any one of claims 1 to 8, characterized in that: The assembly method of the connector comprises the following steps: First, two terminals (2) are inserted as a group in a symmetrical distribution along the terminal groove (32) away from the opening of the slot (31), and the insertion is stopped after the fastening protrusion (210) formed on the guide portion (21) interferes with the terminal groove (32). At this time, the through hole (20) and the positioning groove (30) are not completely aligned, and the aperture of the through hole (20) that has entered the positioning groove (30) is larger than the cross section of the front end of the guide portion (53); Secondly, the wire terminal (5) is inserted from one end of the positioning groove (30), and the guide portion (53) is allowed to pass through the through holes (20) of the two terminals (2) in sequence and then extend from the other end of the positioning groove (30). During the process of inserting the wire terminal (5) into the positioning groove (30), the guide inclined surface (530) on the guide portion (53) exerts an extrusion effect on the through holes (20) of the terminal (2), so as to push the terminal (2) to continue to extend along the terminal groove (32), until the limiting portion (51) of the wire terminal (5) is blocked at the end of the positioning groove (30), and the inserting piece (511) on the limiting portion (51) is inserted into the fastening groove (301) formed at the end of the positioning groove (30). At this time, the wire terminal (5) is completely inserted into the positioning groove (30), and the terminal (2) is completely inserted into the terminal groove (32) under the push of the wire terminal (5); Then, after stripping off the insulating layer (41) at one end of the wire (4), insert the end of the guide portion (53) into the wire groove (50) of the wire terminal (5), and connect and clamp the wire (4) in the wire groove (50) through the elastic clamping piece (521) formed on the positioning portion (52); Finally, the guide portion (53) is bent inwardly along the spacing groove (54) by utilizing the spacing groove (54) provided between the positioning portion (52) and the guide portion (53), and the wire (4) in the wire groove (50) is clamped and fixed.

10. A connector according to any one of claims 1 to 8, characterized in that: The assembly method of the connector comprises the following steps: First, two terminals (2) are inserted as a group in a symmetrical distribution along the terminal groove (32) away from the opening of the slot (31), and the insertion is stopped after the fastening protrusion (210) formed on the guide portion (21) interferes with the terminal groove (32). At this time, the through hole (20) and the positioning groove (30) are not completely aligned, and the aperture of the through hole (20) that has entered the positioning groove (30) is larger than the cross section of the front end of the guide portion (53); Next, after stripping off the insulating layer (41) at one end of the wire (4), the wire (4) is passed through the positioning groove (30) and the through hole (20) of the terminal (2) from one end of the positioning groove (30), and the wire (4) that has passed through the positioning groove (30) is inserted into the wire groove (50) of the wire terminal (5) from one end of the guide portion (53), and the wire (4) in the wire groove (50) is connected and clamped by an elastic clamping piece (521) formed on the positioning portion (52); Then, the wire terminal (5) is inserted into the positioning groove (30) along the protruding end of the wire (4), and the guide portion (53) is allowed to pass through the through holes (20) of the two terminals (2) in sequence and then protrude from the other end of the positioning groove (30). During the process of inserting the wire terminal (5) into the positioning groove (30), the guide inclined surface (530) on the guide portion (53) exerts an extrusion effect on the through hole (20) of the terminal (2), so as to push the terminal (2) to continue to extend along the terminal groove (32), until the limiting portion (51) of the wire terminal (5) is blocked at the end of the positioning groove (30), and the inserting piece (511) on the limiting portion (51) is inserted into the fastening groove (301) formed at the end of the positioning groove (30). At this time, the wire terminal (5) is completely inserted into the positioning groove (30), and the terminal (2) is completely inserted into the terminal groove (32) under the push of the wire terminal (5); Finally, the guide portion (53) is bent inwardly along the spacing groove (54) by utilizing the spacing groove (54) provided between the positioning portion (52) and the guide portion (53), and the wire (4) in the wire groove (50) is clamped and fixed.

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