High-density electrical connector structure

Abstract

The utility model provides a kind of high-density electric connector structure, including an insulating body, with the longitudinal slot for an electronic module insertion being recessed from top surface downward, multiple terminal slots are respectively arranged in the longitudinal side wall of both sides of slot;Multiple terminals are respectively one-to-one corresponding and are accommodated in the corresponding terminal slot in two longitudinal side walls, at least a part of terminal slot is provided with double-layer terminal, the rest terminal slot is single-layer terminal, each terminal includes fixed part, elastic force arm extending upward from fixed part and welding part extending out of the bottom of insulating body from fixed part downward, elastic force arm has contact part projecting into slot;The double-layer terminal includes upper terminal and lower terminal, and the elastic force arm of lower terminal is at least one S shape or back character shape;The high-density electric connector structure has superior mechanical properties and also has superior electrical properties.

Description

Technical Field

[0001] This utility model belongs to the field of connectors, specifically relating to a high-density electrical connector structure. 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 for inserting an electronic module (electronic card). The slot has longitudinal sidewalls arranged along the length of the slot on both sides, and multiple terminal slots are provided on the longitudinal sidewalls on both sides of the slot.

[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. 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 towards the inside of 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 is bent downward to form a lower inclined contact arm. The end of the lower inclined contact arm is a contact end that extends into the slot.

[0006] The aforementioned high-speed communication storage connector increases the number of terminals by partially setting double-layer terminals, thereby increasing the signal transmission channels and significantly improving signal transmission speed. However, both the upper and lower terminals have ordinary straight-arm structures with insufficient lever arm length, resulting in high mechanical stress. Over prolonged use, this not only increases the insertion force on the electronic module but also easily wears down the metal conductive plates on the electronic module, affecting the user experience and conductivity stability. Therefore, improvements are needed. Utility Model Content

[0007] The purpose of this invention is to provide a high-density electrical connector structure 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: A high-density electrical connector structure, comprising: An insulating body has a longitudinally elongated slot recessed from top to bottom for inserting an electronic module, and multiple terminal slots are respectively provided in the longitudinally elongated sidewalls on both sides of the slot. Multiple terminals are respectively housed in corresponding terminal slots in the two longitudinal side walls. At least a portion of the terminal slots are provided with double-layer terminals, while the remaining terminal slots are provided with single-layer terminals. Each terminal includes a fixing part, an elastic lever arm extending upward from the fixing part, and a welding part extending downward from the fixing part out of the bottom of the insulating body. The elastic lever arm has a contact part that protrudes into the slot. The double-layer terminal includes an upper layer terminal and a lower layer terminal, and the elastic lever arm of the lower layer terminal is at least S-shaped or U-shaped.

[0009] Furthermore, the elastic lever arm of the lower terminal is a continuous bending structure with two S-shapes.

[0010] Furthermore, the two sides of the elastic lever arm of the lower terminal that are parallel to the slot are stamped cutting surfaces, and the two sides that are perpendicular to the slot are flat surfaces. A slot is provided on the flat surface to make the elastic lever arm form a U-shape.

[0011] Furthermore, the two sides of the elastic arm of the upper terminal that are parallel to the slot are stamped cutting surfaces, and the two sides of the elastic arm of the upper terminal that are perpendicular to the slot are flat surfaces; the two flat surfaces are provided with slots that make the elastic arm of the upper terminal form a U-shape, or the two flat surfaces are unslotted planes.

[0012] To achieve the above objectives, another technical solution used in this utility model is: A high-density electrical connector structure, comprising: An insulating body has a longitudinally elongated slot recessed from top to bottom for inserting an electronic module, and multiple terminal slots are respectively provided in the longitudinally elongated sidewalls on both sides of the slot. Multiple terminals are respectively housed in corresponding terminal slots in the two longitudinal side walls. At least a portion of the terminal slots are provided with double-layer terminals, while the remaining terminal slots are provided with single-layer terminals. Each terminal includes a fixing part, an elastic lever arm extending upward from the fixing part, and a welding part extending downward from the fixing part out of the bottom of the insulating body. The elastic lever arm has a contact part that protrudes into the slot. The double-layer terminal includes an upper terminal and a lower terminal, and the elastic lever arm of the upper terminal is at least S-shaped or U-shaped.

[0013] Furthermore, the elastic lever arm of the upper terminal is a continuous bending structure with two S-shapes.

[0014] Furthermore, the two sides of the elastic lever arm of the upper terminal that are parallel to the slot are stamped cutting surfaces, and the two sides that are perpendicular to the slot are flat surfaces. The flat surfaces are provided with slots that make the elastic lever arm form a U-shape.

[0015] Furthermore, the elastic arm of the upper terminal is longer than that of the lower terminal, the contact portion of the upper terminal is higher than that of the lower terminal, the two sides of the elastic arm of the lower terminal that are parallel to the slot are stamping and cutting surfaces, and the two sides of the elastic arm of the lower terminal that are perpendicular to the slot are flat surfaces; a slot is provided on the two flat surfaces to make the elastic arm of the upper terminal form a U-shape, or the two flat surfaces are slotless planes.

[0016] Compared with the prior art, the main advantages of this utility model are reflected in: (1) By designing the elastic lever arm of the upper or lower terminal to be at least S-shaped or U-shaped, the elastic lever arm of the upper or lower terminal has a special structure, which makes the elastic lever arm of the upper or lower terminal have superior mechanical properties as well as superior high-frequency electrical properties (i.e., the upper or lower terminal has relatively low characteristic impedance).

[0017] (2) The elastic lever arm of the upper or lower terminal is designed to be at least S-shaped, which not only increases the relative length of the elastic lever arm, but also ensures the shortest straight transmission distance of the current. The increase in the relative length of the elastic lever arm can reduce the mechanical stress of the elastic lever arm. Under long-term use, it can ensure that the electronic module has a relatively low insertion force when it is inserted, and can also maintain the contact force with the electronic module, thereby ensuring the conductivity stability.

[0018] (3) The elastic lever arm of the upper or lower terminal is designed as a hollowed-out U-shape, which reduces the mechanical stress of the elastic lever arm (without the need to lengthen the elastic lever arm to reduce the internal stress) and maintains the length of the elastic lever arm, ensuring the shortest current transmission distance (i.e., current transmission length). The reduction of the mechanical stress of the elastic lever arm can also ensure that the electronic module has a relatively low insertion force when it is inserted under long-term use, and can also maintain the contact force with the electronic module, thereby ensuring the conductivity stability. Attached Figure Description

[0019] Figure 1 An exploded perspective view of one embodiment of the high-density electrical connector structure of this utility model; Figure 2 for Figure 1 A three-dimensional view of the terminals in the diagram; Figure 3 for Figure 1 A three-dimensional view of the two upper-layer terminals and two lower-layer terminals; Figure 4 for Figure 3The front view; Figure 5 This is a cross-sectional view at the location of a single-layer terminal; Figure 6 This is a cross-sectional view at the location of the double-layer terminal; Figure 7 This is a front view of two upper terminals and two lower terminals of another embodiment of the high-density electrical connector structure of this utility model; Figure 8 This is a front view of two upper terminals and two lower terminals, representing another embodiment of the high-density electrical connector structure of this utility model.

[0020] The following are the reference numerals: Insulating body 1, slot 11, longitudinal side wall 12, tower 13, terminal slot 14, foolproof part 15, terminal 2, fixing part 21, protrusion 211, elastic lever arm 22, slot 221, slot 1 222, welding part 23, contact part 24, ear buckle 3, iron foot 4. Detailed Implementation

[0021] 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. Example 1

[0022] like Figure 1-6 As shown, the high-density electrical connector structure includes an insulating body 1 and a plurality of terminals 2 housed within the insulating body 1.

[0023] The top surface of the insulating body 1 is recessed in the middle 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. The two ends of the slot 11 extend into the tower portion 13. Each tower portion 13 at both ends of the insulating body 1 has a latch receiving space, and a latch 3 is provided within the latch receiving space. The two latches 3 are fastened and fixed to both sides of the electronic module inserted into the slot 11 to secure the electronic module. An iron foot 4 is fixed to the bottom of each of the two tower portions 13 of the insulating body 1 for connecting to a circuit board to fix the insulating body 1 onto the circuit board.

[0024] The slot 11 has longitudinal sidewalls 12 arranged along its length on both sides. Each longitudinal sidewall 12 on both sides of the slot 11 is provided with multiple terminal slots 14, which penetrate the top surface, bottom surface, and slot-facing surface of the longitudinal sidewall 12. The multiple terminals 2 are respectively housed in corresponding terminal slots 14 within the two longitudinal sidewalls 12. The slot 11 is provided with a foolproof part 15 connecting the two longitudinal sidewalls 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 used to prevent the electronic module from being inserted in reverse.

[0025] Each of the two longitudinal sidewalls 12 has multiple spaced areas, each area containing a double-layer terminal, while the terminal slots 14 between adjacent areas contain single-layer terminals. The double-layer terminals include lower and upper terminals, with each area containing multiple upper and lower terminals. In the double-layer terminal position, each terminal slot 14 accommodates one upper terminal and one lower terminal; in the single-layer terminal position, each terminal slot 14 accommodates one terminal.

[0026] The upper and lower terminals of the double-layer terminal are inserted and fixed in the terminal slot 14 from the bottom upward of the insulating body 1. The single-layer terminal is inserted and fixed in the terminal slot 14 from the bottom upward of the insulating body 1. Each single-layer terminal is flush with the lower terminal and forms a row. Each single-layer terminal has the same structure as the lower terminal. The single-layer terminal is also a lower terminal relative to the upper terminal. Each single-layer terminal has a different structure from the upper terminal. The terminal slot 14 that accommodates one single-layer terminal has the same structure as the terminal slot 14 that accommodates both one lower terminal and one upper terminal.

[0027] The single-layer terminal, upper-layer terminal, and lower-layer terminal all include a fixing part 21, an elastic arm 22 extending upward from the fixing part 21, and a welding part 23 extending downward from the fixing part 21 beyond the bottom of the insulating body 1. The elastic arm 22 has a contact part 24 that protrudes into the slot 11. Each fixing part 21 is fixed in the corresponding terminal slot 14.

[0028] The elastic lever arm 22 of the upper terminal is longer than that of the lower terminal. The contact portion 24 of the upper terminal is higher than that of the lower terminal. The welding portion 23 of the upper terminal is flush with the welding portion 23 of the lower terminal. The welding portions 23 of the upper terminal and the welding portions 23 of the lower terminal face the same direction and both face the outside of the insulating body 1. The welding portion 23 of the single-layer terminal faces the same direction as the welding portion 23 of the lower terminal and both face the outside of the insulating body 1. The structure and height of the single-layer terminal are the same as those of the lower terminal.

[0029] The two sides of the lower and upper terminals that are parallel to the slot 11 are stamped cutting surfaces, and the two sides that are perpendicular to the slot 11 are flat surfaces. The two flat surfaces of the fixing part 21 protrude outward to form a protrusion 211 that is fixed in the terminal slot 14. The protrusion 211 makes the fixing part 21 firmly fixed in the terminal slot 14. The elastic arm 22 of the upper terminal has slots 221 on both sides of the flat surface. The slots 221 on both sides of the elastic arm 22 of the upper terminal correspond to each other and are connected to each other, so that the elastic arm 22 forms a U-shaped structure. The slots 221 extend downward to near the fixing part 21 and upward to near the upper end of the elastic arm 22. The slots 221 make the elastic arm 22 of the upper terminal hollow, which reduces the mechanical stress of the elastic arm 22 of the upper terminal (without the need to lengthen the elastic arm 22 of the upper terminal to reduce the internal stress), while maintaining the length of the elastic arm 22 of the upper terminal, thereby ensuring the shortest current transmission distance (i.e., current transmission length), and also making the upper terminal have a relatively low high-frequency characteristic impedance. The elastic lever arm 22 of the lower terminal and the single-layer terminal is a continuous S-shaped bending structure, which ensures that the width of the elastic lever arm 22 of the lower terminal and the single-layer terminal is relatively wide (the two continuous S-shaped bending sides of the S-shaped structure parallel to the slot 11 are stamping cutting surfaces, and the distance between the outermost part of the stamping cutting surface of one S-shaped bend at the S-bend and the outermost part of the stamping cutting surface of the other S-shaped bend at the S-bend is (e.g., ... is (e.g., the distance between the outermost part of the stamping cutting surface of the other S-shaped bend at the S-bend)). Figure 4 The distance between the two dashed lines shown represents the width D of the elastic arm 22 of the lower terminal and the single-layer terminal (this width D is relatively wide) to reduce characteristic impedance. The continuous bending structure also relatively lengthens the relative length of the elastic arm 22 of the lower terminal and the single-layer terminal to reduce the mechanical stress of the elastic arm 22 of the lower terminal and the single-layer terminal, while ensuring the shortest straight-line current transmission distance (the straight-line distance (d) between the upper end of the upper S-shape and the lower end of the lower S-shape within the flat surface of the continuous bending structure is the shortest current transmission distance). The upper part of the elastic arm 22 of the upper terminal bends towards the slot. Example 2

[0030] like Figure 7 As shown, this embodiment differs from the first embodiment described above in that: While a second slot 221 is provided on the flat surface of the elastic arm 22 of the upper terminal to form a U-shape, a first slot 222 is also provided on the flat surface of the elastic arm 22 of the lower terminal and the single-layer terminal to form a U-shape. The second slot 221 and the first slot 222 hollow out the elastic arms 22 of the upper terminal, lower terminal, and single-layer terminal, while maintaining the width of the elastic arm 22 (…). Figure 7The D in the figure represents the width of the elastic lever arm 22. This reduces the mechanical stress of the elastic lever arm 22 of the upper terminal, lower terminal and single terminal (without having to lengthen the elastic lever arm 22 to reduce internal stress), while maintaining the length of the elastic lever arm 22, thereby ensuring the shortest current transmission distance (i.e. current transmission length). Example 3

[0031] like Figure 8 As shown, this embodiment differs from Embodiment 1 in that: the elastic arms 22 of the lower and single-layer terminals also have slots 222 on their flat surfaces, making the elastic arms 22 form a U-shape; the elastic arms 22 of the upper terminal do not have slots on their flat surfaces, meaning the two flat surfaces of the elastic arms 22 of the upper terminal are slotless planes. The slots 222 allow the elastic arms 22 of the lower and single-layer terminals to be hollowed out, maintaining the width of the elastic arms 22 while (…). Figure 8 The D in the figure represents the width of the elastic lever arm 22. This reduces the mechanical stress of the elastic lever arm 22 of the lower terminal and the single-layer terminal (without having to lengthen the elastic lever arm 22 to reduce internal stress), while maintaining the length of the elastic lever arm 22, thereby ensuring the shortest current transmission distance (i.e., current transmission length).

[0032] In addition, the present invention may have other embodiments. In other embodiments, double-layer terminals may be provided in a terminal slot 14 in only one area on one of the longitudinal sidewalls 12, or double-layer terminals may be provided in a terminal slot 14 in only one area on both longitudinal sidewalls 12.

[0033] In other embodiments, the elastic lever arm 22 of the upper or lower terminal is only an S-shaped structure.

[0034] 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 high-density electrical connector structure, characterized in that, include: An insulating body has a longitudinally elongated slot recessed from top to bottom for inserting an electronic module, and multiple terminal slots are respectively provided in the longitudinally elongated sidewalls on both sides of the slot. Multiple terminals are respectively housed in corresponding terminal slots in the two longitudinal side walls. At least a portion of the terminal slots are provided with double-layer terminals, while the remaining terminal slots are provided with single-layer terminals. Each terminal includes a fixing part, an elastic lever arm extending upward from the fixing part, and a welding part extending downward from the fixing part out of the bottom of the insulating body. The elastic lever arm has a contact part that protrudes into the slot. The double-layer terminal includes an upper layer terminal and a lower layer terminal, and the elastic lever arm of the lower layer terminal is at least S-shaped or U-shaped.

2. The high-density electrical connector structure according to claim 1, characterized in that: The elastic lever arm of the lower terminal is a continuous bending structure with two S-shapes.

3. The high-density electrical connector structure according to claim 1, characterized in that: The two sides of the elastic lever arm of the lower terminal that are parallel to the slot are stamped cutting surfaces, and the two sides that are perpendicular to the slot are flat surfaces. A slot is provided on the flat surface to make the elastic lever arm form a U-shape.

4. The high-density electrical connector structure according to claim 1, characterized in that: The two sides of the elastic arm of the upper terminal that are parallel to the slot are stamped cutting surfaces, and the two sides of the elastic arm of the upper terminal that are perpendicular to the slot are flat surfaces; the two flat surfaces are provided with slots that make the elastic arm of the upper terminal form a U-shape, or the two flat surfaces are unslotted planes.

5. A high-density electrical connector structure, characterized in that, include: An insulating body has a longitudinally elongated slot recessed from top to bottom for inserting an electronic module, and multiple terminal slots are respectively provided in the longitudinally elongated sidewalls on both sides of the slot. Multiple terminals are respectively housed in corresponding terminal slots in the two longitudinal side walls. At least a portion of the terminal slots are provided with double-layer terminals, while the remaining terminal slots are provided with single-layer terminals. Each terminal includes a fixing part, an elastic lever arm extending upward from the fixing part, and a welding part extending downward from the fixing part out of the bottom of the insulating body. The elastic lever arm has a contact part that protrudes into the slot. The double-layer terminal includes an upper terminal and a lower terminal, and the elastic lever arm of the upper terminal is at least S-shaped or U-shaped.

6. The high-density electrical connector structure according to claim 5, characterized in that: The elastic lever arm of the upper terminal is a continuous bending structure in the shape of two S-shapes.

7. The high-density electrical connector structure according to claim 5, characterized in that: The two sides of the elastic lever arm of the upper terminal that are parallel to the slot are stamped cutting surfaces, and the two sides that are perpendicular to the slot are flat surfaces. The flat surfaces have a slot 2 that makes the elastic lever arm form a U-shape.

8. The high-density electrical connector structure according to claim 5, characterized in that: The elastic lever arm of the upper terminal is longer than that of the lower terminal, the contact portion of the upper terminal is higher than that of the lower terminal, the two sides of the elastic lever arm of the lower terminal that are parallel to the slot are stamping and cutting surfaces, and the two sides of the elastic lever arm of the lower terminal that are perpendicular to the slot are flat surfaces; a slot is provided on the two flat surfaces to make the elastic lever arm of the upper terminal form a U-shape, or the two flat surfaces are unslotted planes.

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