Folding terminal structure and electric connector

Abstract

The utility model relates to the field of electric connectors and discloses a folding terminal structure and an electric connector, the folding terminal structure comprises a matching end used for being matched with an external butt-joint terminal and a wiring end connected with the matching end, the wiring end is provided with a cohesion part used for limiting an external conductive element, the cohesion part is tightly matched in a plastic shell, and the plastic shell is provided with a plurality of through holes. And the wiring terminal is also provided with a fastening part which is used for penetrating into the plastic shell and is elastically propped against the plastic shell in multiple directions. Through the cooperation of the cooperation end and the wiring end, after the folding terminal structure penetrates into the plastic shell, the cooperation end is used for being in plug-in cooperation with a butt joint terminal, and the wiring end is used for being in plug-in cooperation with an external conductive element so as to realize electric signal transmission. According to the folding terminal structure, the fastening part is additionally provided with more directions for elastically supporting the plastic shell on the basis of tight fit between the wiring end and the plastic shell, so that the connection stability between the folding terminal structure and the plastic shell is improved, the possibility of loosening of the folding terminal structure is reduced, and the use safety of the folding terminal structure is improved.

Description

Technical Field

[0001] The utility model relates to the field of electric connectors, in particular to a folding terminal structure and an electric connector. Background Art

[0002] Electrical connectors are widely used in electronics, electrical appliances, and instruments. Their function is to serve as a connecting bridge between blocked circuits or independent circuits within a circuit, and to undertake the task of current or signal transmission. They can also be used in conjunction with electrical terminals to form a board-to-wire connection, or they can be used independently to connect boards to boards.

[0003] As the core component of the electrical connector, the connecting terminal is used to facilitate the connection of the wires and is used to transmit data on the electrical connector. Some existing connecting terminals have a wiring terminal for connecting with the wires and a mating terminal for plugging in and out of the plastic shell and the mating terminal, wherein the wiring terminal squeezes the inner wall of the plastic shell along one of the lateral directions to maintain the stability between the connecting terminal and the plastic shell, but in another direction perpendicular to the lateral direction, the connecting terminal can still move, resulting in relatively poor stability between the connecting terminal and the plastic shell. Utility Model Content

[0004] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a folding terminal structure and an electrical connector to solve the problem of poor stability between the connecting terminal and the plastic housing.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a folding terminal structure including a mating end for mating with an external docking terminal and a wiring terminal connected to the mating end, the wiring terminal is formed with an embracing portion for limiting external conductive elements, the embracing portion is tightly fitted in the plastic shell, and the wiring terminal also has a fastening portion for penetrating into the plastic shell and elastically pressed against the plastic shell in multiple directions, so as to increase more action directions compared to the prior art, thereby improving the firmness and stability between the folding terminal structure and the plastic shell.

[0006] Furthermore, the mating end includes a first laminate connected to the wiring terminal and a second laminate stacked on the first laminate; the first laminate and the second laminate are integrally bent to increase the thickness of the mating end and enhance the connection stability between the mating end and the plastic housing and the docking terminal.

[0007] Furthermore, the second laminate is folded onto the first laminate by stamping after being bent at one lateral side of the first laminate, and the manufacturing cost and operation difficulty are low.

[0008] Furthermore, the embracing portion includes a first embracing arm and a second embracing arm respectively extending outwardly from both lateral sides of the terminal, and each of the first embracing arm and the second embracing arm has a notch, and the notch separates the corresponding embracing wall into a front embracing portion and a rear embracing portion spaced apart along the axial direction of the folding terminal structure, and the embracing space between the two front embracing portions is smaller than the embracing space between the two rear embracing portions, thereby increasing the contact area with the plastic shell to improve the connection stability while improving the stability with the external conductive element.

[0009] Furthermore, the fastening portion is arranged between the embracing portion and the mating end, and the fastening portion includes an L-shaped first elastic support section bent from one side of the wiring terminal to increase the contact mating surface with the plastic shell in two directions relative to the wiring terminal, thereby improving the connection firmness.

[0010] Furthermore, the fastening portion also includes a second elastic support section formed by bending from the other side of the wiring terminal. On the basis of adding the first elastic support section, contact matching surfaces are further added at different positions to increase the contact area and improve stability.

[0011] Furthermore, a square structure is formed between the first elastic support section, the second elastic support section and the terminal, and the first elastic support section and the second elastic support section are close to each other to form a gap; the first elastic support section has a first side plate bent from one side of the terminal and extending in a first direction perpendicular to the terminal, and a second side plate bent from the first side plate and extending in a second direction parallel to the terminal, and a barb for limiting the movement of the fastening part is convexly formed on the side of the second side plate facing away from the terminal, thereby preventing the entire folding terminal structure from moving and rotating in the lateral direction, and the barb limits its movement in the axial direction, thereby achieving all-round restriction.

[0012] A technical solution adopted by the utility model is: to provide an electrical connector including a plastic shell and a folding terminal structure, wherein a first plug-in cavity is provided in the plastic shell, and the first plug-in cavity passes through the first surface of the plastic shell along a plug-in direction; a second plug-in cavity is provided in the plastic shell, and the second plug-in cavity has a first plug-in port passing through the second surface of the plastic shell along the plug-in direction and a second plug-in port connected to the first plug-in cavity along the plug-in direction, the wiring terminal of the folding terminal structure penetrates into the second plug-in cavity through the first plug-in port, the mating end passes through the second plug-in port and extends into the first plug-in cavity, and the mating end is tightly fitted in the second plug-in port, and all-round limiting between the wiring terminal and the plastic shell is achieved through the fastening portion on the wiring terminal to ensure the connection stability between the folding terminal structure and the plastic shell.

[0013] Furthermore, the second insertion cavity has a first cavity section, a second cavity section and a third cavity section that are connected in sequence from the second surface to the first surface of the plastic shell, the embracing portion is pressed against the inner wall of the first cavity section, the second cavity section is gradually narrowed from the first cavity section, and the fastening portion is tightly fitted in the third cavity section, thereby ensuring that the fastening portion achieves an all-round limiting effect with the plastic shell.

[0014] Furthermore, a movable cavity is formed on the first insertion cavity along the first direction, the movable cavity faces the barb arrangement, and an elastic portion is formed on the movable cavity extending from the side close to the second surface toward the side of the first surface, and a limiting cavity is provided between the end of the elastic portion close to the first surface and the inner wall of the movable cavity for the barb to penetrate into along the first direction, the elastic portion facilitates the barb to pass through the third cavity section and enter the limiting cavity, and the barb cooperates with the limiting cavity to prevent the fastening portion from moving toward the first insertion port along the plug-in direction.

[0015] The folding terminal structure and electrical connector of the utility model have at least the following beneficial effects: the cooperation between the mating end and the wiring terminal, after the folding terminal structure is inserted into the plastic shell, the mating end is used to plug and mate with the docking terminal, and the wiring terminal is used to plug and mate with the external conductive element to realize electrical signal transmission after power is turned on; the fastening part adds more directions of elastic support with the plastic shell on the basis of the tight fit between the wiring terminal and the plastic shell, thereby improving the connection stability between the folding terminal structure and the plastic shell, reducing the possibility of loosening of the folding terminal structure, and improving the safety of use of the folding terminal structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 It is a structural schematic diagram of the electrical connector of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the electrical connector of the utility model from another angle;

[0019] Figure 3 A top view of the electrical connector of the present utility model;

[0020] Figure 4 It is a cross-sectional view of the electrical connector of the utility model along the AA direction;

[0021] Figure 5 It is a structural schematic diagram of the folding terminal structure of the utility model.

[0022] The meanings of the symbols in the accompanying drawings are:

[0023] Plastic shell-1; first surface-11; second surface-12; first insertion cavity-13; second insertion cavity-14; first cavity section-141; second cavity section-142; third cavity section-143; slot-15; movable cavity-16; limiting cavity-161; elastic part-17; first insertion port-18; second insertion port-19;

[0024] Folding terminal structure-2; mating end-21; first stack-211; second stack-212; terminal-22; embracing portion-22a; fastening portion-22b; first embracing arm-221; notch-222; first elastic support section-223; first side plate-2231; second side plate-2232; second embracing arm-224; second elastic support section-225; barb-226. DETAILED DESCRIPTION

[0025] The utility model will be further described below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 5 As shown, the electrical connector of the utility model includes a plastic shell 1 and a folding terminal structure 2 arranged in the plastic shell 1 along a plug-in direction. The plastic shell 1 is used to install and support the folding terminal structure 2 and serve as insulation protection. The folding terminal structure 2 is used to plug and match with the docking terminal and the external conductive element to realize electrical signal connection.

[0027] like Figures 1 to 4 As shown, in this embodiment, the plastic shell 1 is supported by an insulating plastic material and has an overall square structure. Two opposite outer side walls of the plastic shell 1 are defined as the first surface 11 and the second surface 12 of the plastic shell 1, and the direction of the central axis of the first surface 11 and the second surface 12 is defined as the plug-in direction, so as to facilitate the understanding of the present utility model. A first plug-in cavity 13 and a second plug-in cavity 14 are respectively provided in the plastic shell 1, and the first plug-in cavity 13 and the second plug-in cavity 14 are spaced apart along the plug-in direction. Hook-shaped elastic blocks are provided on both sides of the plastic shell 1 to facilitate connection with external components or circuit boards.

[0028] In the content defined in this embodiment, the first insertion cavity 13 is arranged and distributed according to the number of folding terminal structures 2. In this embodiment, the first insertion cavity 13 is provided with two parallel columns, each column is provided with at least one first insertion cavity 13, and the two columns of first insertion cavities 13 are staggered in the row direction. The number and position of the second insertion cavity 14 and the folding terminal structure 2 correspond to the first insertion cavity 13 one by one. It should be noted that the row direction and column direction are respectively provided based on the distribution direction of the first insertion cavity 13, and the distribution direction of each column of the first insertion cavity 13 is the column direction, and the row direction and the column direction are both horizontal. The first insertion cavity 13 penetrates the first surface 11 of the plastic shell 1 along the plug-in direction so that the first insertion cavity 13 can be plugged and matched with the docking electrical connector. The contour of the first insertion cavity 13 is consistent with the outer contour of the plug-in structure of the docking electrical connector to adapt to it. A slot 15 penetrating the first surface 11 of the plastic shell 1 is provided on the inner wall of the first insertion cavity 13 along the plugging direction, and a corresponding plug block is provided on the outer wall of the plug-in structure of the docking electrical connector. The front of the plug block is on one side of the first insertion cavity 13 and laterally penetrates the inner wall of the first insertion cavity 13 to connect the first insertion cavity 13. The cooperation between the slot 15 and the plug block increases the contact area between the plastic shell 1 and the docking electrical connector to improve the connection stability. The port at one end of the slot 15 penetrating the first surface 11 of the plastic shell 1 is wide-mouthed to facilitate the plug block to quickly enter the slot 15. In this embodiment, an active cavity 16 is provided on the first insertion cavity 13 along a first direction. The active cavity 16 is a square structure and is located on one of the inner walls of the first insertion cavity 13. An elastic portion 17 is formed inside the active cavity 16 on one side close to the second surface 12 and extends toward the first surface 11 of the plastic shell 1 along the plug-in direction. The side edges of the elastic portion 17 are spaced apart from the inner wall diameters of the active cavity 16, and a limiting cavity 161 is provided between one end of the elastic portion 17 close to the first surface 11 and the inner wall of the active cavity 16 close to the first surface 11. The limiting cavity 161 passes through the plastic shell 1 along the first direction toward the outside of the second insertion cavity 14 and is connected to the second insertion cavity 14. In this way, a U-shaped gap can be formed between the elastic portion 17 and the active cavity 16, so that the elastic portion 17 can swing relative to the active cavity 16 along the first direction while reducing the glue, so that the second insertion cavity 14 can be expanded to a certain extent by being squeezed by the folding terminal structure 2 during the installation of the folding terminal structure 2, so as to facilitate the passage of the folding terminal structure 2. In this embodiment, the first direction is the row direction, and a movable cavity 16 and an elastic portion 17 are provided on a side surface of each second insertion cavity 14 in each column facing away from the second insertion cavity 14 in another column.

[0029] In the content defined in this embodiment, the second insertion cavity 14 is located on the side close to the second surface 12 of the plastic shell 1 relative to the first insertion cavity 13, and the first insertion cavity 13 is located on the side close to the first surface 11 of the plastic shell 1. The second insertion cavity 14 has a first insertion port 18 penetrating the second surface 12 of the plastic shell 1 along the insertion direction and a second insertion port 19 connected to the first insertion cavity 13 along the insertion direction toward the first surface 11 of the plastic shell 1 on both sides along the insertion direction, respectively. The first insertion port 18 is used for the folding terminal structure 2 to penetrate into the second insertion cavity 14, and the second insertion port 19 is used for one end of the folding terminal structure 2 to penetrate into the first insertion port 18. The second insertion cavity 14 has a first cavity section 141, a second cavity section 142 and a third cavity section 143 which are connected in sequence from the second surface 12 to the first surface 11 of the plastic shell 1, the elastic part 17 is opposite to the first cavity section 141, the second cavity section 142 and the third cavity section 143 along the first direction, and the inner wall of the elastic part 17 serves as a part of the second insertion cavity 14, and the limiting cavity 161 is opposite to the third cavity section 143 along the first direction.

[0030] like Figure 5 As shown, the folding terminal structure 2 includes a mating end 21 for mating with an external mating terminal and a wiring end 22 connected to the mating end 21. The mating end 21 is used for mating with the mating terminal, and the wiring end 22 is used for connecting and mating with an external conductive element to achieve transmission of electrical signals. In this embodiment, the folding terminal structure 2 is made of a conductive metal material such as copper.

[0031] In this embodiment, the mating end 21 includes a first laminate 211 connected to the terminal 22 and a second laminate 212 stacked on the first laminate 211 . The first laminate 211 and the second laminate 212 are integrally bent and formed. The second laminate 212 is formed by bending one lateral side of the first laminate 211 and then folding onto the first laminate 211 by stamping, thereby increasing the thickness of the entire mating end 21 and improving the strength of the mating end 21; since the first laminate 211 and the second laminate 212 are formed by sheet-shaped stamping and bending, the first laminate 211 and the second laminate 212 have a certain elasticity and toughness, and there is a certain gap between the first laminate 211 and the second laminate 212 and they will not fit together, and the first laminate 211 and the second laminate 212 are V-shaped to a certain extent. When the mating end 21 is inserted into the docking terminal, the docking terminal will squeeze the first laminate 211 and the second laminate 212, and the first laminate 211 and the second laminate 212 will rebound and press against the docking terminal, thereby achieving a tight fit between the mating end 21 and the docking terminal. The mating end 21 can pass through the second insertion port 19, and the width of the second insertion port 19 is slightly smaller than the thickness of the mating end 21, so that the mating end 21 will squeeze the first laminate 211 and the second laminate 212 when passing through the second insertion port 19, so that the mating end 21 is pressed against the second insertion port 19 after being in place, and the second insertion port 19 and the wiring terminal 22 form a multi-point support for the folding terminal structure 2, thereby improving the stability between the folding terminal structure 2 and the plastic shell 1. When in use, the mating end 21 passes through the first insertion port 18, the second insertion cavity 14 and the second insertion port 19 in sequence into the first insertion cavity 13, and the end of the mating end 21 connected to the wiring terminal 22 is located in the second insertion port 19 and pressed against the second insertion port 19, and the second insertion port 19 provides support for the mating end 21 after the mating end 21 is mated with the butt terminal.

[0032] In this embodiment, the terminal 22 is formed by extending from the first laminate 211 along the axial direction of the mating end 21 and is in the shape of a long strip. The terminal 22 is provided with an embracing portion 22a for limiting external conductive elements and a fastening portion 22b for penetrating into the plastic housing 1 and elastically pressing against the plastic housing 1 in multiple directions. When in use, the terminal 22 is inserted into the second insertion cavity 14 through the first insertion port 18 along with the mating end 21. After being installed in place, the embracing portion 22a is tightly fitted in the first cavity section 141 and the second cavity section 142, and the fastening portion 22b is tightly fitted in the third cavity section 143. The embracing portion 22a and the fastening portion 22b respectively support and press against the inner wall of the second insertion cavity 14 from multiple directions, thereby improving the connection stability between the folding terminal structure 2 and the plastic housing 1.

[0033] In the content defined in this embodiment, the embracing portion 22a includes a first embracing arm 221 and a second embracing arm 224 respectively extending outwardly from the lateral sides of the terminal 22, the lateral direction of the terminal 22 refers to its width direction, the first embracing arm 221 and the second embracing arm 224 are distributed in a mirror image and are both arc-shaped sheet structures, and the first embracing arm 221 and the second embracing arm 224 are U-shaped together with the terminal 22. A notch 222 is provided on each of the first embracing arm 221 and the second embracing arm 224, and the two notches 222 respectively separate the first embracing wall and the second embracing arm 224 into a front embracing portion and a rear embracing portion spaced apart along the axial direction of the folding terminal structure 2, the embracing space between the two front embracing portions may be smaller than the width of the embracing space between the two rear embracing portions, and the embracing space between the two front embracing portions may also be larger than the width of the embracing space between the two rear embracing portions, but at least one of the front embracing portion and the rear embracing portion is pressed against the inner wall of the second insertion cavity 14. The front hugging part and the rear hugging part are both located in the first cavity section 141, and the front hugging part is located on the side close to the mating end 21 relative to the rear hugging part, the end of the rear hugging part is flush with the end of the terminal 22 away from the mating end 21, and the front hugging part extends to the second cavity section 142 on the side facing the mating end 21. The length of the rear hugging part is greater than the length of the front hugging part, and the opposite sides of the ends of the two rear hugging parts are used to abut against the inner wall of the first cavity section 141 to limit the movement of the terminal 22 in the lateral direction of the terminal 22, and the ends of the two rear hugging parts are used to abut against the first cavity section 141 to limit the movement of the terminal 22 from another direction. The spacing between the ends of the two front hugging parts is greater than the width of the first cavity section 141, and the ends of the front hugging parts do not contact the inner wall of the first cavity section 141, so that when the terminal 22 is installed, the inner wall of the first cavity section 141 can squeeze the two front hugging parts, and the two front hugging parts can deform inward after being squeezed and reversely press against the inner wall of the first cavity section 141.

[0034] In the content defined in this embodiment, the fastening portion 22b is arranged between the embracing portion and the mating end 21 and is used to fit tightly in the third cavity section 143. The fastening portion 22b includes an L-shaped first elastic support segment 223 bent from one side of the wiring terminal 22 and a second elastic support segment 225 bent from the other side of the wiring terminal 22. After the first elastic support segment 223, the wiring terminal 22 and the second elastic support segment 225 are installed in the third cavity section 143, they limit the freedom of the folding terminal structure 2 in the lateral direction from four directions respectively. A square structure is formed between the first elastic support segment 223, the second elastic support segment 225 and the wiring terminal 22 to limit the rotation of the folding terminal structure 2 and prevent the folding terminal structure 2 from loosening and falling off when installed on the plastic housing 1. In order to facilitate the fastening portion 22b to penetrate into the third cavity segment 143 and press against the third cavity segment 143, the first elastic support segment 223 and the second elastic support segment 225 are close to each other and a gap is formed, so that the first elastic support segment 223 and the second elastic support segment 225 can be squeezed by the inner wall of the third cavity segment 143 and deformed and contracted towards each other, and the contracted first elastic support segment 223 and the second elastic support segment 225 press against the inner wall of the third cavity segment 143. In order to facilitate the fastening portion 22b and the embracing portion 22a to cooperate with the second insertion cavity 14 respectively, the second cavity section 142 is gradually narrowed from the first cavity section 141 side to the third cavity section 143 side to form a step shape, the side facing the first cavity section 141 is the wide end, the width of which is equal to the width of the first cavity section 141, the side facing the third cavity section 143 is the narrow end, the width of which is equal to the width of the third cavity section 143, and the inner wall of the second cavity section 142 is inclined to guide the fastening portion 22b when installing the folding terminal structure 2, so that the fastening portion 22b can accurately enter the third cavity section 143. In this embodiment, the lateral direction of the terminal 22 is distributed along the column direction relative to the plastic housing 1, and the first elastic support section 223 has a first side plate 2231 bent from one side of the terminal 22 and extending in a first direction (i.e., the row direction) perpendicular to the terminal 22 and a second side plate 2232 bent from the first side plate 2231 and extending in a second direction (i.e., the column direction) parallel to the terminal 22, the terminal 22, the first side plate 2231 and the second side plate 2232 form a U shape, and the second elastic support section 225 is bent from the other side of the terminal 22 and extends in the row direction. The second side plate 2232 extends away from the first side plate 2231 and extends toward the second elastic support section 225 to form a directional structure. The second side plate 2232 and the second elastic support section 225 are arranged at an interval, and the second side plate 2232 is used to face the elastic part 17, so that the fastening part 22b can be deformed toward the outer shape of the active cavity 16 by squeezing the elastic part 17 during the installation of the folding terminal structure 2, thereby facilitating the fastening part 22b to enter the third cavity section 143.Preferably, a barb 226 for limiting the movement of the fastening portion 22b is formed on the side of the second side plate 2232 facing away from the terminal 22. The barb 226 is inclined from the second side plate 2232 toward the side away from the terminal 22 and is inclined relative to the plastic housing 1 toward the second surface 12. The elastic portion 17 facilitates the barb 226 to penetrate into the third cavity section 143 and enter the limiting cavity 161. The movable cavity 16 is distributed facing the barb 226. After the folding terminal structure 2 is installed, the end of the fastening portion 22b close to the mating end 21 abuts against the inner wall of the third cavity section 143 to limit the folding terminal structure 2 from continuing to move toward the first insertion cavity 13, and the barb 226 penetrates into the limiting cavity 161 to limit the folding terminal structure 2 from moving toward the second surface 12 of the plastic housing 1, thereby limiting the omnidirectional freedom of the folding terminal structure 2.

[0035] The working method of one embodiment of the folding terminal structure and the electrical connector of the utility model is as follows: during assembly, the folding terminal structure 2 is aligned with the second insertion cavity 14 along the insertion direction, and the mating end 21 is directed toward the second insertion cavity 14, and the mating end 21 is sequentially passed through the first insertion port 18, the second insertion cavity 14, and the second insertion port 19 to be inserted into the first insertion cavity 13, and the end of the mating end 21 close to the wiring terminal 22 is clamped in the second insertion port 19. During this process, the fastening portion 22b sequentially passes through the first insertion port 18, the first cavity section 141, and the second cavity section 142. When passing through the second cavity section 142, the fastening portion 22b is reversed. The thorns 226 squeeze the elastic part 17 to deform the elastic part 17 outward until the fastening part 22b is clamped in the third cavity section 143 and the barbs 226 are inserted into the limiting cavity 161. The embracing part 22a is inserted through the first insertion port 18 and clamped in the first cavity section 141 during this process. After that, an external conductive element such as a wire can be inserted into the embracing space through the first insertion port 18 along the insertion direction until the front embracing part and the rear embracing part both clamp the wire. After that, one side of the first insertion cavity 13 is facing the docking electrical connector and then mates with the docking electrical connector. The mating end 21 is conductively connected to the docking terminal to realize electrical signal transmission after power is turned on.

Claims

1. A folding terminal structure, comprising a mating end for mating with an external docking terminal and a wiring terminal connected to the mating end, wherein the wiring terminal is formed with an embracing portion for limiting an external conductive element, and the embracing portion is tightly fitted in a plastic housing, characterized in that: The terminal also has a fastening portion which is used to penetrate into the plastic shell and elastically press against the plastic shell in multiple directions.

2. The folding terminal structure according to claim 1, characterized in that: The mating end includes a first laminate connected to the terminal and a second laminate stacked on the first laminate; the first laminate and the second laminate are integrally bent.

3. The stacked terminal structure according to claim 2, wherein: The second laminate is folded onto the first laminate by stamping after being bent from one lateral side of the first laminate.

4. The folding terminal structure according to claim 1, characterized in that: The embracing portion includes a first embracing arm and a second embracing arm respectively extending outwardly from the lateral sides of the terminal, and each of the first embracing arm and the second embracing arm has a notch, and the notch separates the corresponding embracing wall into a front embracing portion and a rear embracing portion spaced apart along the axial direction of the folding terminal structure, and the embracing space between the two front embracing portions is smaller than the embracing space between the two rear embracing portions.

5. The folding terminal structure according to claim 4, characterized in that: The fastening portion is arranged between the embracing portion and the mating end, and the fastening portion includes an L-shaped first elastic supporting section bent from one side of the wiring terminal.

6. The folding terminal structure according to claim 5, characterized in that: The fastening portion further comprises a second elastic support section formed by bending from the other side of the connection terminal.

7. The folding terminal structure according to claim 6, characterized in that: A square structure is formed between the first elastic support segment, the second elastic support segment and the terminal, and the first elastic support segment and the second elastic support segment are close to each other and form a gap; The first elastic support section comprises a first side plate bent from one side of the terminal and extending in a first direction perpendicular to the terminal, and a second side plate bent from the first side plate and extending in a second direction parallel to the terminal, and a barb for limiting the movement of the fastening part is convexly formed on the side of the second side plate facing away from the terminal.

8. An electrical connector, characterized in that: It includes a plastic shell and a folding terminal structure as described in any one of claims 1 to 7, a first plug-in cavity is opened in the plastic shell, the first plug-in cavity passes through the first surface of the plastic shell along a plug-in direction; a second plug-in cavity is opened in the plastic shell, the second plug-in cavity has a first plug-in port passing through the second surface of the plastic shell along the plug-in direction and a second plug-in port connected to the first plug-in cavity along the plug-in direction, the connection terminal of the folding terminal structure passes through the first plug-in port into the second plug-in cavity, the mating end passes through the second plug-in port and extends into the first plug-in cavity, and the mating end is tightly fitted in the second plug-in port.

9. The electrical connector according to claim 8, wherein: The second insertion cavity has a first cavity section, a second cavity section and a third cavity section connected in sequence from the second surface to the first surface of the plastic shell, the embracing portion is pressed against the inner wall of the first cavity section, the second cavity section is gradually narrowed from the first cavity section, and the fastening portion is tightly fitted in the third cavity section.

10. The electrical connector according to claim 9, wherein: An active cavity is formed on the first insertion cavity along the first direction, the active cavity faces the barb arrangement as described in claim 7, and an elastic portion is formed on the active cavity extending from the side close to the second surface toward the side of the first surface, and a limiting cavity is provided between the end of the elastic portion close to the first surface and the inner wall of the active cavity for the barb to penetrate into along the first direction.

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