Multi-terminal plug-in card connector

Abstract

The utility model provides a multi-terminal plug-in card connector, which comprises an insulating body, and a plurality of terminal grooves are respectively arranged in the lengthwise side walls on the two sides of a slot of the insulating body; double-layer terminals are arranged in at least one part of the terminal grooves, and single-layer terminals are arranged in the rest of the terminal grooves; the double-layer terminal comprises a lower-layer terminal and an upper-layer terminal, and the thickness of the upper-layer terminal along the lengthwise direction of the insulating body is smaller than that of the lower-layer terminal along the lengthwise direction of the insulating body; according to the multi-terminal plug-in card connector, the characteristic impedance of the lower-layer terminal can be lower, so that the high-frequency performance of the lower-layer terminal is improved.

Description

Technical Field

[0001] This utility model belongs to the field of connectors, specifically relating to a multi-terminal plug-in connector. Background Technology

[0002] Chinese patent CN202411745993.5 discloses a high-speed communication storage electrical connector, including an insulating body and multiple terminals housed within the insulating body.

[0003] The top surface of the insulating body is recessed in the middle along the longitudinal direction to form a longitudinal slot. There are longitudinal sidewalls on both sides of the slot along the length of the slot, and multiple terminal slots are provided on each of the longitudinal sidewalls on both sides of the slot. A rectangular groove with an open inner side is recessed downward at the top surface of the longitudinal sidewall corresponding to the terminal slot that accommodates the upper terminal. Multiple independent partitions are located below the rectangular groove, and the outer sides of the multiple independent partitions are connected to the sidewall of the rectangular groove that is on the outer side of the insulating body.

[0004] Multiple terminals are respectively housed in corresponding terminal slots within the two longitudinal sidewalls. Some terminals within each longitudinal sidewall are configured as double-layer terminals, meaning at least a portion of the terminal slots contain double-layer terminals, while the remaining slots contain single-layer terminals. The double-layer terminals include a lower layer terminal and an upper layer terminal. The upper layer terminal of the double-layer terminal is inserted and fixed into the terminal slot from the top of the insulating body downwards, while the lower layer terminal of the double-layer terminal is inserted and fixed into the terminal slot from the bottom of the insulating body upwards. The single-layer terminals are inserted and fixed into the terminal slot from the bottom of the insulating body upwards, and each single-layer terminal is flush with the lower layer terminal and forms a row.

[0005] Both the upper and lower terminals include a fixing part that is fixed in the corresponding terminal slot. An opening is provided in the center of the fixing part to save metal material. A locking point protrudes from the inner side of the fixing part and engages with the inner wall of the corresponding terminal slot. The fixing part extends upwards and downwards to form an upper arm and a lower arm, respectively. The lower end of the lower arm bends inwards towards the insulating body to form a welding part. The upper end of the upper arm of the lower terminal protrudes towards the slot to form a contact part. The upper end of the upper arm of the upper terminal extends towards the slot to form an upper inclined arm. The end of the upper inclined arm bends downwards to form a lower inclined contact arm, the end of which is the contact end, extending into the slot.

[0006] The aforementioned high-speed communication storage electrical connector increases the number of terminals by partially setting double-layer terminals, thereby increasing the signal transmission channels and greatly improving the signal transmission speed. The upper terminal of the double-layer terminal is inserted and fixed in the terminal slot from top to bottom, and the lower terminal is inserted and fixed in the terminal slot from bottom to top. No plug is needed, and there is no plug assembly step. This not only enables high-speed automated plug production, but also reduces costs and improves yield. However, in the double-layer terminal, the upper and lower terminals have the same thickness along the longitudinal direction of the insulation body, and the lower terminal has a high characteristic impedance, which weakens its high-frequency performance. Furthermore, the rectangular recessed groove (i.e., the recessed structure) with an inward opening is only provided on the top surface of the longitudinal sidewall; the outer side of the longitudinal sidewall away from the slot and the inner side facing the slot do not have a recessed structure. This means the terminal slot housing the upper terminal is not completely open, making insertion of the upper terminal difficult. Moreover, providing a recessed structure only locally on the top surface of the longitudinal sidewall does little to reduce the weight of the insulation body. Additionally, the fixing part of the upper terminal is located below the upper and lower inclined contact arms that form the lever arm. The width of the fixing part of the upper terminal is wider than the width of the upper and lower arms of the upper terminal, requiring an increase in the width of the insulation body to create space for the fixing part. Therefore, improvements are needed. Utility Model Content

[0007] The purpose of this invention is to provide a multi-terminal plug-in connector to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the technical solution used in this utility model is as follows:

[0009] A multi-terminal plug-in connector, comprising:

[0010] An insulating body has a longitudinally elongated slot recessed from top to bottom for inserting an electronic module. Multiple terminal slots are respectively provided in the longitudinally elongated sidewalls on both sides of the slot. At least one end of the insulating body is provided with an ear clip receiving space and a pivot part for pivoting the ear clip.

[0011] At least one ear loop is pivotally connected to one end of the insulating body;

[0012] Multiple terminals are respectively housed in corresponding terminal slots within the two longitudinal side walls. At least a portion of the terminal slots are equipped with double-layer terminals, while the remaining terminal slots are equipped with single-layer terminals. The double-layer terminals include a lower terminal and an upper terminal. The thickness of the upper terminal along the longitudinal direction of the insulation body is less than the thickness of the lower terminal along the longitudinal direction of the insulation body.

[0013] Furthermore, at the position of the double-layer terminal, a lower-layer terminal and an upper-layer terminal in each terminal slot are embedded together with a plug fixed in the terminal slot; at the position of the single-layer terminal, each single-layer terminal is fixed in the corresponding terminal slot from the bottom of the insulating body upward by insertion, or, a terminal in each terminal slot is embedded together with a plug fixed in the terminal slot.

[0014] Furthermore, the upper terminal is inserted and fixed in the terminal slot from the top of the insulating body downwards, and the lower terminal is inserted and fixed in the terminal slot from the bottom of the insulating body upwards; the single-layer terminal is inserted and fixed in the terminal slot from the bottom of the insulating body upwards or from the top of the insulating body downwards.

[0015] Furthermore, the top surface, the surface facing the slot, and the surface away from the slot of each of the longitudinal sidewalls are all recessed structures at the positions corresponding to the upper-level terminals, so that the terminal slots accommodating the upper-level terminals are in a fully open state.

[0016] Furthermore, the top surface, the slot-facing surface, and the slot-remote surface of each of the longitudinal sidewalls are recessed at the positions corresponding to the upper-level terminals to form a first groove, a second groove, and a third groove. The first groove, the second groove, and the third groove are connected to the corresponding terminal slots for receiving the upper-level terminals. The second groove is located above the terminal slot for receiving the lower-level terminals opened on the slot-facing surface of the longitudinal sidewall. The slot-facing side and the slot-remote side of the first groove are connected to the second groove and the third groove, respectively. The third groove extends downward through the bottom of the longitudinal sidewall. The first groove, the second groove, and the third groove constitute the recessed structure.

[0017] Furthermore, the surface of each of the longitudinal sidewalls away from the slot is recessed near the bottom surface of the longitudinal sidewall to form a fourth groove. The fourth groove is arranged along the longitudinal direction of the longitudinal sidewall, and the third groove communicates with the fourth groove. Furthermore, in the recessed structure, at the positions where multiple upper terminals are adjacent, an independent partition is formed between each pair of adjacent terminal slots in the terminal slots that receive the multiple upper terminals. The top surface, the surface facing the slot, and the surface away from the slot of each independent partition are all lower than the top surface, the surface facing the slot, and the surface away from the slot of the longitudinal sidewall.

[0018] Furthermore, the top surface of each of the longitudinal sidewalls is provided with multiple recessed structures at intervals, and a material chute is provided between each pair of adjacent recessed structures, the material chute penetrating the bottom of the longitudinal sidewall.

[0019] Furthermore, the lower terminal includes a fixing part fixed in the corresponding terminal slot. The fixing part extends upward and downward to form an upper arm and a lower arm, respectively. The lower end of the lower arm is bent outward toward the outside of the insulating body to form a welding part of the lower terminal. The upper end of the upper arm protrudes toward the slot side to form a contact part of the lower terminal.

[0020] Furthermore, the upper terminal includes an outer arm and an inner arm. The length of the outer arm is greater than the length of the inner arm. The lower end of the outer arm is bent toward the outside of the insulating body to form a welding part of the upper terminal. The upper end of the outer arm is connected to the upper end of the inner arm through a transverse connecting part and forms an inverted U-shaped holding part fixed in the upper part of the insulating body. The lower end of the inner arm is bent forward and upward to form an elastic lever arm. The upper end of the elastic lever arm is bent toward the slot side to form a contact part of the upper terminal that extends into the slot.

[0021] The advantages of this utility model compared to the prior art are mainly reflected in the following aspects: The thickness of the upper terminal along the longitudinal direction of the insulating body is less than that of the lower terminal along the longitudinal direction of the insulating body, and the thickness of the lower terminal is greater than that of the upper terminal, resulting in a lower characteristic impedance of the lower terminal and thus increasing its high-frequency performance; By setting the holding part of the upper terminal at the top of the entire upper terminal and forming the holding part in an inverted U-shape to fix it to the upper part of the insulating body, the width of the insulating body can be effectively reduced, thereby reducing the space occupied by the insulating body; By designing the terminal slots for accommodating the upper terminal at the positions corresponding to the upper terminal on the top surface, the slot-facing surface, and the slot-removing surface of each longitudinal sidewall, the terminal slots for accommodating the upper terminal are designed to be complete. The fully open, recessed structure not only makes it easier to insert and fix the upper terminal into the terminal slot from top to top, but also greatly reduces the weight of the insulation body. The upper terminal is designed to consist of an outer arm and an inner arm, a transverse connecting part, an elastic lever arm, and a contact part. The upper end of the outer arm is connected to the inner arm through the transverse connecting part to form an inverted U-shaped holding part. The lower end of the inner arm is bent upward to form an elastic lever arm, which can form a U-shaped structure with the elastic lever arm. The inverted U-shaped structure and the U-shaped structure can shorten the distance between the contact part of the upper terminal and the outer arm, thereby reducing the space occupied by the upper terminal in the terminal slot. This further reduces the width of the insulation body, thereby reducing the space occupied by the insulation body and reducing the weight of the insulation body. Attached Figure Description

[0022] Figure 1 This is an exploded perspective view of the various terminal plug-in connectors, electronic modules, and circuit boards of this utility model.

[0023] Figure 2 A 3D view of various terminal block connectors;

[0024] Figure 3 This is a three-dimensional view of various terminal block connectors from another angle.

[0025] Figure 4 A three-dimensional view of the insulating body;

[0026] Figure 5 This is a three-dimensional view of the insulating body from another angle;

[0027] Figure 6 This is a top view of the insulating body;

[0028] Figure 7 for Figure 1 A three-dimensional view of the terminals in the diagram;

[0029] Figure 8 for Figure 7 Top view;

[0030] Figure 9 for Figure 7 A three-dimensional view of the lower-level terminals;

[0031] Figure 10 for Figure 7 A three-dimensional view of the upper terminal in the middle;

[0032] Figure 11 A cross-sectional view of the terminal slot location for accommodating a single-layer terminal in the insulating body;

[0033] Figure 12 for Figure 11 Cross-section at the junction with a single-layer terminal Figure 1 The cutting position was at the edge of the terminal slot, and the single-layer terminal was not cut;

[0034] Figure 13 for Figure 11 Cross-section at the junction with a single-layer terminal Figure 2 The cutting position is at the center of the terminal slot, and it has cut down to the single-layer terminal;

[0035] Figure 14 A cross-sectional view of the terminal slot location for accommodating double-layer terminals in the insulating body;

[0036] Figure 15 for Figure 14 Cross-sectional view of the junction with the double-layer terminal.

[0037] Reference numerals: Insulating body 1, slot 11, longitudinal side wall 12, recessed structure 12a, first groove 121, second groove 122, third groove 123, fourth groove 124, tower 13, terminal slot 14, foolproof part 15, independent partition 16, material chute 17, through groove 18, partition wall 19, clearance groove one 1a, retaining wall 1b, clearance groove two 1c, clearance groove three 1d, terminal 2, lower terminal 2a, upper terminal 2b, fixing part 21, opening 211, locking point 212, upper arm 22, lower arm 23, welding part 24, contact part 25, outer arm 26, inner arm 27, transverse connecting part 28, elastic lever arm 29, ear buckle 4, metal locking structure 5, electronic module 6, iron foot 7, circuit board 8. Detailed Implementation

[0038] To facilitate a better understanding of the purpose, structure, features, and effects of this utility model, the present utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0039] like Figure 1-15 As shown, the multi-terminal plug-in connector includes an insulating body 1 and a plurality of terminals 2 housed within the insulating body 1.

[0040] The top surface of the insulating body 1 has a recessed center along its longitudinal direction to form a longitudinally elongated slot 11. A tower portion 13 is provided at both ends of the insulating body 1 along its length, with the ends of the slot 11 extending into the tower portions 13. The tower portions 13 at the two ends of the insulating body 1 along its length are at different heights. The lower tower portion 13 of the insulating body 1 has a space for receiving ear clips, and an ear clip 4 is provided within the ear clip receiving space. The tower portion 13 has a pivot portion for pivotally connecting the ear clip 4. The higher tower portion 13 is provided with a metal locking structure 5. The ear clip 4 and the metal locking structure 5 form a single-sided ear clip, which saves space occupied when the ear clip is opened. The ear clip 4 and the metal locking structure 5 are fastened and fixed to both sides of the electronic module 6 inserted into the slot 11 to secure the electronic module 6. A metal foot 7 is fixed to the bottom of each of the two tower portions 13 of the insulating body 1 for connecting to the circuit board 8 to fix the insulating body 1 to the circuit board 8.

[0041] The slot 11 has longitudinal sidewalls 12 arranged along its length on both sides, and each longitudinal sidewall 12 on both sides of the slot 11 is provided with a plurality of terminal slots 14. The terminal slots 14 penetrate the bottom surface of the insulating body 1 and also penetrate the slot-facing surface of the longitudinal sidewall 12. The plurality of terminals 2 are respectively housed in the corresponding terminal slots 14 in the two longitudinal sidewalls 12. Some of the terminals 2 in each of the longitudinal sidewalls 12 are configured as double-layer terminals, that is, at least a portion of the terminal slots 14 are provided with double-layer terminals (this can be a single terminal slot 14 on one or two longitudinal sidewalls 12, or multiple spaced terminal slots 14 on one or two longitudinal sidewalls 12 are provided with double-layer terminals), and the remaining terminal slots 14 are single-layer terminals. The double-layer terminals include a lower terminal 2a and an upper terminal 2b.

[0042] The slot 11 is provided with a foolproof part 15 connecting the two longitudinal side walls 12. The foolproof part 15 divides the slot 11 into slot one and slot two, which is shorter than slot one. The foolproof part 15 is close to the lower tower part 13. The foolproof part 15 is used to prevent the electronic module 6 from being inserted in reverse.

[0043] The top surface, slot-facing surface, and slot-remote surface of each longitudinal sidewall 12 of the insulating body 1 are recessed structures 12a at the corresponding positions of the upper terminal 2b, so that the terminal slot 14 accommodating the upper terminal 2b is fully open. Multiple recessed structures 12a are provided on each longitudinal sidewall 12, and these recessed structures 12a are spaced apart. The top surface, slot-facing surface, and slot-remote surface of each longitudinal sidewall 12 are recessed at the corresponding positions of the upper terminal 2b to form a first groove 121, a second groove 122, and a third groove 123. The second groove 122 is located above the terminal slot 14 accommodating the lower terminal 2a, which is opened on the slot-facing surface of the longitudinal sidewall 12. The slot-facing side and slot-remote side of the first groove 121 communicate with the second groove 122 and the third groove 123, respectively. The third groove 123 extends downward through the bottom of the longitudinal sidewall 12. The first groove 121, the second groove 122, and the third groove 123 constitute the recessed structure 12a. Each of the longitudinal sidewalls 12 has a fourth recess 124 formed by recessing the surface away from the slot at a position close to the bottom surface of the longitudinal sidewall 12. The fourth recess 124 is arranged along the longitudinal direction of the longitudinal sidewall 12, and the third recess 123 communicates with the fourth recess 124. The terminal slots 14 that receive each of the upper terminals 2b communicate with the first recess 121, the second recess 122 and the third recess 123, and there are multiple adjacent positions of the upper terminals 2b in the recessed structure 12a. An independent partition 16 is formed between each pair of adjacent terminal slots 14 that receive the multiple upper terminals 2b. The top surface, the surface facing the slot and the surface away from the slot of each independent partition 16 are all lower than the top surface, the surface facing the slot and the surface away from the slot of the longitudinal sidewall 12.

[0044] Each of the longitudinal sidewalls 12 has a material extraction groove 17 on its top surface at a position between every two adjacent recessed structures 12a. The material extraction groove 17 passes through the bottom of the longitudinal sidewall 12 and communicates with the fourth groove 124. The design of the material extraction groove 17 can not only save materials and reduce the weight of the insulating body 1, but also prevent the insulating body 1 from warping, and also facilitate mold forming.

[0045] The thickness of the upper terminal 2b along the longitudinal direction of the insulating body 1 is less than the thickness of the lower terminal 2a along the longitudinal direction of the insulating body 1. The upper terminal 2b of the double-layer terminal is inserted and fixed into the terminal slot 14 from the top of the insulating body 1 downwards, and the lower terminal 2a of the double-layer terminal is inserted and fixed into the terminal slot 14 from the bottom of the insulating body 1 upwards. The single-layer terminal is inserted and fixed into the terminal slot 14 from the bottom of the insulating body 1 upwards. Each single-layer terminal is flush with the lower terminal 2a and forms a row. Each single-layer terminal has the same structure as the lower terminal 2a, and the thickness of each single-layer terminal along the longitudinal direction of the insulating body 1 is also the same as that of the lower terminal 2a. The single-layer terminal is also considered a lower terminal relative to the upper terminal 2b. Each single-layer terminal has a different structure from the upper terminal 2b. The terminal slot 14 that houses each single-layer terminal has the same structure as the terminal slot 14 that houses each lower terminal 2a, but the terminal slot 14 that houses each single-layer terminal has a different structure than that that houses each upper terminal 2b.

[0046] Each terminal slot 14 accommodating a single-layer terminal and a lower-layer terminal 2a has a through slot 18 extending through both the top and bottom surfaces of the longitudinal sidewall 12. A partition wall 19 separates the through slot 18 from the terminal slot 14 inside it. The upper end of the partition wall 19 has a clearance slot 1a that connects the upper end of the terminal slot 14 inside the through slot 18 to the through slot 18. Above the terminal slot 14 inside the through slot 18 is a retaining wall 1b. At the position of the single-layer terminal, the upper end of the retaining wall 1b is flush with the top surface of the longitudinal sidewall 12. The upper end and outer side of the outer side wall of 8 are flush with the top surface and the surface away from the slot of the longitudinal side wall 12, respectively. At the position of the double-layer terminal, there is a relief groove 1c between the upper end of the retaining wall 1b and the top surface of the longitudinal side wall 12, and there is a relief groove 1d between the upper end of the outer side wall of the through groove 18 and the top surface of the longitudinal side wall 12. The terminal groove 14 that accommodates each upper terminal 2b is located outside the outer side of the outer side wall of the through groove 18. The upper end of the terminal groove 14 that accommodates the upper terminal 2b is connected to the relief groove 1d, the relief groove 1c and the upper end of the through groove 18.

[0047] The lower terminal 2a includes a fixing part 21 fixed in the corresponding terminal slot 14. The fixing part 21 has an opening 211. The inner side of the fixing part 21 protrudes to form a locking point 212. The fixing part 21 extends upward and downward to form an upper arm 22 and a lower arm 23 respectively. The lower end of the lower arm 23 is bent outward toward the outside of the insulating body 1 to form a welding part 24. The welding part 24 of the single-layer terminal is oriented in the same direction as the welding part 24 of the lower terminal 2a. The upper end of the upper arm 22 protrudes toward the slot 11 to form a contact part 25.

[0048] The upper terminal 2b includes an outer arm 26 and an inner arm 27. The length of the outer arm 26 is greater than the length of the inner arm 27. The outer arm 26 is located in the terminal slot 14 outside the through slot 18, and the inner arm 27 is located in the through slot 18. The lower end of the outer arm 26 is bent towards the outside of the insulating body 1 to form a welding part 24. The welding part 24 of the upper terminal 2b and the welding part 24 of the lower terminal 2a face the same direction, and the welding part 24 of the upper terminal 2b and the welding part 24 of the lower terminal 2a are flush. The upper end of the outer arm 26 is connected to the upper end of the inner arm 27 through a transverse connecting part 28 located at the relief groove 1d, and forms an inverted U-shaped retaining part at the upper end of the outer wall of the through groove 18 (i.e., the inverted U-shaped retaining part is retained in the upper part of the insulating body 1). The opposite sides of the outer arm 26 and the inner arm 27 also protrude to form a locking point 212 that is locked on the outer wall of the through groove 18. The lower end of the inner arm 27 extends forward and then bends upward to form an elastic arm 29 located in the through groove 18. The retaining part of the upper terminal 2b is at the uppermost part of the entire upper terminal 2b. The inner arm 27 and the elastic arm 29 form a U-shaped structure. The upper end of the elastic arm 29 bends toward the slot 11 to form a contact part 25 located in the relief groove 1c and extending into the slot 11. The contact part 25 of the upper terminal 2b is higher than the contact part 25 of the lower terminal 2a. The inverted U-shaped structure and the U-shaped structure can shorten the distance between the contact portion 25 of the upper terminal 2b and the outer arm 26, thereby reducing the space occupied by the upper terminal 2b in the terminal slot 14 of the upper terminal 2b, and further reducing the width of the insulating body 1, thereby reducing the space occupied by the insulating body 1 and reducing the weight of the insulating body 1.

[0049] The length of the terminal slot 14 accommodating each of the upper terminals 2b on the top surface of the insulating body 1 along the width direction of the insulating body 1 is greater than the length of the terminal slot 14 accommodating each of the lower terminals 2a on the bottom surface of the insulating body 1 along the width direction of the insulating body 1. The length of the terminal slot 14 accommodating each of the upper terminals 2b on the top surface of the insulating body 1 along the width direction of the insulating body 1 is greater than the length of the terminal slot 14 accommodating each of the lower terminals 2a on the bottom surface of the insulating body 1 along the width direction of the insulating body 1. The length of the terminal slot 14 accommodating each of the upper terminals 2b on the bottom surface of the insulating body 1 along the width direction of the insulating body 1 is less than the length of the terminal slot 14 accommodating each of the lower terminals 2a on the bottom surface of the insulating body 1 along the width direction of the insulating body 1.

[0050] Multiple recessed structures 12a are spaced apart on the top surface of each of the longitudinal sidewalls 12. Between each pair of adjacent recessed structures 12a, there is a through groove 18 and a material extraction groove 17. The through groove 18 is located on the inner side of the top surface of the longitudinal sidewall 12, and the material extraction groove 17 is located on the outer side of the top surface of the longitudinal sidewall 12. The material extraction groove 17 is located at the position of the single-layer terminal, and at the position of the single-layer terminal, the material extraction groove 17 is located outside the through groove 18. Terminal slots 14 for receiving each upper terminal 2b and terminal slots 14 for receiving each lower terminal 2a are arranged in a row on the bottom surface of the insulating body 1. On the bottom surface of the insulating body 1, the terminal slots 14 for receiving the upper terminal 2b are on the outer side, and the terminal slots 14 for receiving the lower terminal 2a are on the inner side. The through groove 18 is located on the bottom surface of the insulating body 1 between the terminal slots 14 for receiving the upper terminal 2b and the terminal slots 14 for receiving the lower terminal 2a.

[0051] Compared with the prior art, the beneficial effects of this utility model are mainly reflected in the following aspects: The thickness of the upper terminal 2b along the longitudinal direction of the insulating body 1 is less than the thickness of the lower terminal 2a along the longitudinal direction of the insulating body 1, and the thickness of the lower terminal 2a is greater than the thickness of the upper terminal, resulting in a lower characteristic impedance of the lower terminal 2a, thereby increasing the high-frequency performance of the lower terminal 2a; by setting the retaining part of the upper terminal 2b at the top of the entire upper terminal and forming the retaining part in an inverted U-shape and fixing it to the upper part inside the insulating body 1, the width of the insulating body 1 can be effectively reduced, thereby reducing the space occupied by the insulating body 1; by designing the terminal slot 14 accommodating the upper terminal 2b to be completely open at the positions corresponding to the upper terminal 2b on the top surface, the slot-facing surface, and the slot-removing surface of each longitudinal sidewall 12, the terminal slot 14 accommodating the upper terminal 2b is designed to be completely open. The concave structure not only makes it easier to insert and fix the upper terminal 2b into the terminal slot 14 from top to bottom, but also greatly reduces the weight of the insulating body 1. The upper terminal 2b is designed to consist of an outer arm 26, an inner arm 27, a transverse connecting part 28, an elastic lever arm 29, and a contact part 25. The upper end of the outer arm 26 is connected to the inner arm 27 through the transverse connecting part 28 to form an inverted U-shaped holding part. The lower end of the inner arm 27 is bent upward to form an elastic lever arm 29 and can form a U-shaped structure with the elastic lever arm 29. The inverted U-shaped structure and the U-shaped structure can shorten the distance between the contact part 25 and the outer arm 26 of the upper terminal 2b, thereby reducing the space occupied by the upper terminal 2b in the terminal slot 14, further reducing the width of the insulating body 1, thereby reducing the space occupied by the insulating body 1 and reducing the weight of the insulating body 1.

[0052] In other embodiments, each of the two tower portions 13 of the insulating body 1 is provided with a latch 4. The two latches 4 are respectively fastened and fixed to both sides of the electronic module 6 in the insertion slot 11 to fix the electronic module 6.

[0053] In other embodiments, each single-layer terminal is flush with the upper-layer terminal and forms a row. Each single-layer terminal has the same structure as the upper-layer terminal 2b, and each single-layer terminal has a different structure from the lower-layer terminal 2a. The terminal slot 14 that receives each single-layer terminal has the same structure as the terminal slot 14 that receives each upper-layer terminal 2b, and the terminal slot 14 that receives each single-layer terminal has a different structure than the terminal slot that receives each lower-layer terminal 2a.

[0054] In other embodiments, based on the fact that the thickness of the upper terminal 2b along the longitudinal direction of the insulating body 1 is less than the thickness of the lower terminal 2a along the longitudinal direction of the insulating body 1, at the position of double-layer terminals, one lower terminal 2a and one upper terminal 2b in each terminal slot are embedded together with a plug in the terminal slot (insert molding); at the position of single-layer terminals, one terminal in each terminal slot is embedded together with a plug in the terminal slot; each plug is inserted and fixed into the corresponding terminal slot one by one from the bottom of the insulating body upwards.

[0055] In other embodiments, based on the fact that the thickness of the upper terminal 2b along the longitudinal direction of the insulating body 1 is less than the thickness of the lower terminal 2a along the longitudinal direction of the insulating body 1, each single-layer terminal is fixed in the corresponding terminal slot from the bottom of the insulating body upward by insertion; in the position of double-layer terminals, one lower terminal 2a and one upper terminal 2b in each terminal slot are embedded together with a plug (insert molding), and the plug is inserted and fixed in the terminal slot from the bottom of the insulating body 1 upward.

[0056] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A multi-terminal plug-in connector, characterized in that, include: An insulating body has a longitudinally elongated slot recessed from top to bottom for inserting an electronic module. Multiple terminal slots are respectively provided in the longitudinally elongated sidewalls on both sides of the slot. At least one end of the insulating body is provided with an ear clip receiving space and a pivot part for pivoting the ear clip. At least one ear loop is pivotally connected to one end of the insulating body; Multiple terminals are respectively housed in corresponding terminal slots within the two longitudinal side walls. At least a portion of the terminal slots are equipped with double-layer terminals, while the remaining terminal slots are equipped with single-layer terminals. The double-layer terminals include a lower terminal and an upper terminal. The thickness of the upper terminal along the longitudinal direction of the insulation body is less than the thickness of the lower terminal along the longitudinal direction of the insulation body.

2. The various terminal block connectors according to claim 1, characterized in that: At the position of the double-layer terminal, a lower-layer terminal and an upper-layer terminal in each terminal slot are embedded together with a plug fixed in the terminal slot; at the position of the single-layer terminal, each single-layer terminal is fixed in the corresponding terminal slot from the bottom of the insulating body upward by insertion, or, a terminal in each terminal slot is embedded together with a plug fixed in the terminal slot.

3. The various terminal block connectors according to claim 1, characterized in that: The upper terminal is inserted and fixed in the terminal slot from the top of the insulating body downwards, and the lower terminal is inserted and fixed in the terminal slot from the bottom of the insulating body upwards; the single-layer terminal is inserted and fixed in the terminal slot from the bottom of the insulating body upwards or from the top of the insulating body downwards.

4. The various terminal block connectors according to claim 3, characterized in that: The top surface, the surface facing the slot, and the surface away from the slot of each of the longitudinal sidewalls are all recessed structures at the positions corresponding to the upper-level terminals, so that the terminal slots that accommodate the upper-level terminals are in a fully open state.

5. The various terminal block connectors according to claim 4, characterized in that: The top surface, the slot-facing surface, and the slot-remote surface of each of the longitudinal sidewalls are recessed at the corresponding upper-level terminal positions to form a first groove, a second groove, and a third groove. The first groove, the second groove, and the third groove are connected to the corresponding terminal slots that receive the upper-level terminals. The second groove is located above the terminal slots that receive the lower-level terminals opened on the slot-facing surface of the longitudinal sidewall. The slot-facing side and the slot-remote side of the first groove are connected to the second groove and the third groove, respectively. The third groove extends downward through the bottom of the longitudinal sidewall. The first groove, the second groove, and the third groove constitute the recessed structure.

6. The various terminal block connectors according to claim 5, characterized in that: The surface of each longitudinal sidewall away from the slot is recessed at a position close to the bottom surface of the longitudinal sidewall to form a fourth groove. The fourth groove is arranged along the longitudinal direction of the longitudinal sidewall, and the third groove is connected to the fourth groove.

7. The various terminal block connectors according to claim 5, characterized in that: Within the recessed structure, there are multiple adjacent upper terminals. In the terminal slots that house these upper terminals, an independent partition is formed between each pair of adjacent terminal slots. The top surface, the slot-facing surface, and the slot-remote surface of each independent partition are all lower than the top surface, slot-facing surface, and slot-remote surface of the longitudinal sidewall.

8. The multi-terminal card connector according to any one of claims 4-6, characterized in that: The top surface of each of the longitudinal sidewalls is provided with multiple recessed structures at intervals, and a material discharge groove is provided between each pair of adjacent recessed structures, the material discharge groove penetrating the bottom of the longitudinal sidewall.

9. The multi-terminal card connector according to any one of claims 3-7, characterized in that: The lower terminal includes a fixing part fixed in the corresponding terminal slot. The fixing part extends upward and downward to form an upper arm and a lower arm, respectively. The lower end of the lower arm is bent outward toward the outside of the insulating body to form a welding part of the lower terminal. The upper end of the upper arm protrudes toward the slot side to form a contact part of the lower terminal.

10. The various terminal block connectors according to any one of claims 3-7, characterized in that: The upper terminal includes an outer arm and an inner arm. The length of the outer arm is greater than the length of the inner arm. The lower end of the outer arm is bent toward the outside of the insulating body to form a welding part of the upper terminal. The upper end of the outer arm is connected to the upper end of the inner arm through a transverse connecting part and forms an inverted U-shaped holding part fixed in the upper part of the insulating body. The lower end of the inner arm is bent forward and upward to form an elastic lever arm. The upper end of the elastic lever arm is bent toward the slot side to form a contact part of the upper terminal that extends into the slot.

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