Type-C side-mounted SMT female seat

Abstract

The utility model relates to the technical field of Type-C female seats, and discloses a Type-C side-mounted SMT female seat, which comprises a lower row of terminals, an upper row of terminals, an outer shell and an inner shell, a plurality of pins are arranged on the lower row of terminals and the upper row of terminals, the plurality of pins are designed to be wide at two ends and narrow in the middle, the middle parts of the plurality of pins are bent in an L shape, and the upper row of terminals and the lower row of terminals are bent in an L shape. A lower-row terminal primary mold plastic part is arranged on the outer side of the middle of the lower-row terminal, an upper-row terminal primary mold plastic part is arranged on the outer side of the middle of the upper-row terminal, a middle clamping piece is arranged between the upper-row terminal and the lower-row terminal, and a secondary mold plastic part is arranged on the outer side of the middle of the middle clamping piece. The design of the L-shaped bending of the pins reduces capacitance coupling, further inhibits crosstalk and improves transmission efficiency, the middle clamping piece is combined with the upper and lower rows of terminal Mods to form an integrated structure, mechanical strength is improved, SMT mounting positioning is optimized, and stability of the flitch is improved.

Description

Technical Field

[0001] This utility model relates to the field of Type-C female connector technology, specifically Type-C side-mount SMT female connector. Background Technology

[0002] With the trend towards miniaturization and higher performance in electronic devices, the USB Type-C interface has become the mainstream connection solution due to its reversible plug compatibility, high transmission speed, and high-power charging capability. However, existing Type-C female connectors have gradually revealed the following problems during technological iterations:

[0003] Traditional terminal designs use symmetrical layouts and are not optimized for high-speed signals. The width and spacing of signal pins (such as pins 2, 3, 10, and 11) are not differentiated, resulting in severe crosstalk in high-frequency signals and reduced signal integrity. Actual transmission rates are difficult to exceed 20Gbps, and high-current charging causes heat generation problems due to impedance mismatch, limiting the improvement of fast charging power.

[0004] The terminals use a single-use Mold fixing process, resulting in insufficient bonding strength and easy loosening after repeated insertion and removal. The middle clip lacks a mechanical interlocking structure with the terminals, relying solely on plastic wrapping, leading to poor vibration resistance. In mobile devices (such as laptops and mobile phones), the connector is prone to poor contact or even terminal breakage due to external impacts.

[0005] Poor SMT placement stability, lack of positioning structure on the bottom of plastic parts, and easy misalignment during SMT placement; mismatch in thermal expansion coefficients between terminals and PCB pads, leading to warping after soldering. Increased placement defect rate necessitates additional rework, impacting production efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a Type-C side-mount SMT female connector to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a Type-C side-mount SMT female connector, comprising: a lower row of terminals, an upper row of terminals, and a housing. The lower row of terminals and the upper row of terminals are provided with a plurality of pins, wherein a plurality of the pins are designed to be wide at both ends and narrow in the middle, and the middle of a plurality of the pins are L-shaped bends. A primary molded plastic part for the lower row of terminals is provided on the outer side of the middle of the lower row of terminals, and a primary molded plastic part for the upper row of terminals is provided on the outer side of the middle of the upper row of terminals. A middle clip is provided between the upper row of terminals and the lower row of terminals. A secondary molded plastic part is provided on the outer side of the middle of the middle clip. A housing is provided on the outer side of the secondary molded plastic part, and an inner shell is provided inside one end of the housing.

[0008] Furthermore, one end of the pin of the lower row terminal is the lower row terminal head, the lower row terminal head is inclined, and the angle between the inner side of the lower row terminal head and the horizontal plane is degrees.

[0009] Furthermore, one end of the pin of the upper row terminal is the upper row terminal head, the upper row terminal head is inclined, and the angle between the outer side of the upper row terminal head and the horizontal plane is degrees.

[0010] Furthermore, the middle clip has a positioning hole inside, which is used to connect the lower row terminal primary molded plastic parts and the upper row terminal primary molded plastic parts. The middle clip has bosses on both sides, and the outer walls of the lower row terminal primary molded plastic parts and the upper row terminal primary molded plastic parts are provided with grooves that cooperate with the bosses.

[0011] Furthermore, the outer wall of the outer shell is provided with laser welding points, and the outer shell and the inner shell are connected by laser welding.

[0012] Furthermore, the inner shell is provided with spring pieces on the upper and lower sides, and the outer sides of the spring pieces are provided with through grooves, so that the spring pieces can contact the inner wall of the outer shell.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model, through the setting of lower and upper terminals, and the narrowing of the width of high-speed signal pins 2, 3, 10, and 11 on the terminals, increases the physical spacing between adjacent signal lines, reduces coupling capacitance, and reduces high-frequency crosstalk. In addition, the L-shaped bend design of the pins adjusts the signal path length and layout, avoids excessively long parallel traces between adjacent signal lines, reduces capacitive coupling, further suppresses crosstalk, and improves transmission efficiency.

[0015] Meanwhile, the female connector adopts a secondary mold design. The first mold is used to mold the upper and lower rows of terminals and reserve positioning grooves. The secondary mold has clips that are precisely positioned by the boss and the groove, which simplifies the assembly process, reduces costs, and provides better grounding and reduces interference.

[0016] The middle clip is equipped with two positioning holes, which, when combined with the upper and lower row of terminal molds, form an integrated structure, improving mechanical strength. The inner shell has springs on both sides to enhance grounding performance. The outer shell is fixed to the plastic parts through square holes and long slots to increase the contact area. The inner and outer shells are connected by laser spot welding, which improves structural robustness and grounding effect. The outer side of the plastic parts has protrusions that cooperate with the through slots on the outer side of the inner shell springs, optimizing SMT placement positioning and improving board placement stability.

[0017] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0018] Figure 1 This is a perspective view of the Type-C side-mount SMT female connector of this utility model;

[0019] Figure 2 This is a schematic diagram of the lower row of terminals of the Type-C side-mount SMT female connector of this utility model;

[0020] Figure 3 This is a schematic diagram of the upper row of terminals of the Type-C side-mount SMT female connector of this utility model;

[0021] Figure 4 This is a schematic diagram of the primary mold structure of the lower row of terminals of the Type-C side-mount SMT female connector of this utility model;

[0022] Figure 5 This is a schematic diagram of the primary mold structure of the upper row of terminals of the Type-C side-mount SMT female connector of this utility model;

[0023] Figure 6 This is a schematic diagram of the middle clip structure of the Type-C side-mount SMT female connector of this utility model;

[0024] Figure 7 This is a schematic diagram of the secondary mold structure of the Type-C side-mount SMT female connector of this utility model;

[0025] Figure 8 This is a schematic diagram of the inner shell structure of the Type-C side-mount SMT female connector of this utility model;

[0026] Figure 9 This is a schematic diagram of the outer shell structure of the Type-C side-mount SMT female connector of this utility model;

[0027] Figure 10 This is a schematic diagram of the connection structure between the inner shell and outer shell of the Type-C side-mount SMT female connector of this utility model.

[0028] In the diagram: 1. Lower row of terminals; 101. Lower row of terminal head; 2. Upper row of terminals; 201. Upper row of terminal head; 3. Primary molded plastic part of the lower row of terminals; 4. Primary molded plastic part of the upper row of terminals; 5. Middle clamping piece; 501. Positioning hole; 502. Boss; 6. Secondary molded plastic part; 7. Inner shell; 701. Spring; 8. Outer shell; 801. Laser weld point. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] Please see Figures 1-10 This utility model provides a technical solution: a Type-C side-mount SMT female connector, including: a lower row of terminals 1, an upper row of terminals 2, and a housing 8. The lower row of terminals 1 and the upper row of terminals 2 are provided with several pins, many of which are designed to be wider at both ends and narrower in the middle. In the Type-C USB 3.2 / 4 protocol, pins 2, 3, 10, and 11 are high-speed differential pairs. Narrowing the width of these pins enables differential impedance matching, reduces phase deviation of signal pairs, and improves eye diagram quality. By narrowing the width of specific pins while increasing their spacing from adjacent low-speed / power pins, near-end crosstalk energy is reduced.

[0031] Several pins are L-shaped bends in the middle. The bend design adjusts the signal path length and layout to avoid excessively long parallel traces between adjacent signal lines, reduce capacitive coupling, and further suppress crosstalk.

[0032] The lower row of terminals 1 has a primary molded plastic part 3 on its outer side in the middle, and the upper row of terminals 2 has a primary molded plastic part 4 on its outer side in the middle. A middle clamping piece 5 is located between the upper row of terminals 2 and the lower row of terminals 1. A secondary molded plastic part 6 is located on the outer side of the middle clamping piece 5. A housing 8 is located on the outer side of the secondary molded plastic part 6, and an inner housing 7 is located inside one end of the housing 8. This secondary molding design involves first molding the upper and lower rows of terminals and reserving positioning grooves; then, the secondary molding of the middle clamping piece 5, through the precise positioning of the boss and groove, simplifies the assembly process and reduces costs.

[0033] The pins of the lower row terminal 1 are connected to the lower row terminal head 101, which is angled, with the inner side of the lower row terminal head 101 forming an angle of 85 degrees with the horizontal plane. The pins of the upper row terminal 2 are connected to the upper row terminal head 201, which is also angled, with the outer side of the upper row terminal head 201 forming an angle of 85 degrees with the horizontal plane. When mating with a Type-C male and female connector, the angled terminal heads prevent pin lifting. By pressing the terminals down after molding, they are recessed into the plastic component, preventing damage to the connector terminal heads and ensuring a more secure connection.

[0034] The middle clamp 5 has a positioning hole 501 inside, which is used to connect the lower row terminal primary molded plastic part 3 and the upper row terminal primary molded plastic part 4. The middle clamp 5 has bosses 502 on both sides. The outer walls of the lower row terminal primary molded plastic part 3 and the upper row terminal primary molded plastic part 4 are provided with grooves that mate with the bosses 502. The outer wall of the outer shell 8 has laser welding points 801, and the outer shell 8 and the inner shell 7 are connected by laser welding. The upper and lower sides of the inner shell 7 are provided with spring pieces 701. The outer sides of the spring pieces 701 are provided with through grooves, and the spring pieces 701 can contact the inner wall of the outer shell 8. The middle clip is equipped with two positioning holes, which, when combined with the upper and lower row of terminal blocks, form an integrated structure, improving mechanical strength. The inner shell has four spring clips on both sides to enhance grounding performance. The outer shell is fixed to the plastic parts through square holes and long slots to increase the contact area. The inner and outer shells are connected by laser spot welding, which improves structural robustness and grounding effect. The outer side of the plastic parts has a protrusion that matches the outer through slot of the 701 spring clips on the inner shell, optimizing SMT placement positioning and improving board placement stability.

[0035] This utility model, through the setting of lower and upper terminals, and the narrowing of the width of high-speed signal pins 2, 3, 10, and 11 on the terminals, increases the physical spacing between adjacent signal lines, reduces coupling capacitance, and reduces high-frequency crosstalk. In addition, the L-shaped bend design of the pins adjusts the signal path length and layout, avoids excessively long parallel traces between adjacent signal lines, reduces capacitive coupling, further suppresses crosstalk, and improves transmission efficiency.

[0036] Meanwhile, the female connector adopts a secondary mold design. The first mold is used to mold the upper and lower rows of terminals and reserve positioning grooves. The clamping piece 5 in the secondary mold is precisely positioned by the boss and the groove, which simplifies the assembly process and reduces costs.

[0037] The middle clip is equipped with two positioning holes, which, when combined with the upper and lower row of terminal blocks, form an integrated structure, improving mechanical strength. The inner shell has four spring clips on both sides to enhance grounding performance. The outer shell is fixed to the plastic parts through square holes and long slots to increase the contact area. The inner and outer shells are connected by laser spot welding, which improves structural robustness and grounding effect. The outer side of the plastic parts has a protrusion that matches the outer through slot of the 701 spring clips on the inner shell, optimizing SMT placement positioning and improving board placement stability.

[0038] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. Type-C side paste SMT female seat, comprising: The lower row of terminals (1), the upper row of terminals (2), and the outer shell (8) are characterized in that: the lower row of terminals (1) and the upper row of terminals (2) are provided with a plurality of pins, wherein the plurality of pins are designed to be wide at both ends and narrow in the middle, and the middle of the plurality of pins is bent in an L-shape. The lower row of terminals (1) is provided with a primary molded plastic part (3) on the outer side of the middle of the lower row of terminals (1), the upper row of terminals (2) is provided with a primary molded plastic part (4) on the outer side of the middle of the upper row of terminals (2), a middle clip (5) is provided between the upper row of terminals (2) and the lower row of terminals (1), a secondary molded plastic part (6) is provided on the outer side of the middle of the middle clip (5), and an outer shell (8) is provided on the outer side of the secondary molded plastic part (6), and an inner shell (7) is provided inside one end of the outer shell (8).

2. The Type-C side mount SMT female seat according to claim 1, characterized in that: One end of the pin of the lower terminal (1) is the lower terminal head (101), the lower terminal head (101) is inclined, and the angle between the inner side of the lower terminal head (101) and the horizontal plane is 85 degrees.

3. The Type-C side mount SMT receptacle of claim 1, wherein: One end of the pin of the upper row terminal (2) is the upper row terminal head (201), the upper row terminal head (201) is inclined, and the angle between the outer side of the upper row terminal head (201) and the horizontal plane is 85 degrees.

4. The Type-C side mount SMT receptacle of claim 1, wherein: The middle clip (5) has a positioning hole (501) inside. The positioning hole (501) is used to connect the lower terminal primary molded plastic part (3) and the upper terminal primary molded plastic part (4). The middle clip (5) has bosses (502) on both sides. The outer walls of the lower terminal primary molded plastic part (3) and the upper terminal primary molded plastic part (4) are provided with grooves that cooperate with the bosses (502).

5. The Type-C side-mount SMT female connector according to claim 1, characterized in that: The outer wall of the outer shell (8) is provided with laser welding points (801), and the outer shell (8) and the inner shell (7) are connected by laser welding.

6. The Type-C side mount SMT receptacle of claim 1, wherein: The inner shell (7) is provided with spring pieces (701) on the upper and lower sides. The spring pieces (701) are provided with through grooves on three outer sides. The spring pieces (701) can contact the inner wall of the outer shell (8).

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