Board-to-Board Plug Connector

Abstract

A board-to-board plug connector is provided. [Solution] The plug signal terminal (17) includes a flat contact portion, a fixed portion, and an extension portion, with both ends of the fixed portion extending toward the flat contact portion and the extension portion, respectively. The base (11) includes two inner walls, a tongue-shaped plate, a recess (30), and multiple signal terminal grooves. The tongue-shaped plate is located on the two inner walls, the signal terminal grooves are located on both sides of the tongue-shaped plate and on the inner wall, and the recess is located between one end of the tongue-shaped plate and the two inner walls. The plug signal terminals are located in the signal terminal grooves, and a blocking member (13) is installed in the recess and contacts the extension portion of the plug signal terminal. In this way, the blocking member not only restricts the pins of each terminal but also reduces the portion of the terminal exposed to air, thereby maintaining the high-frequency transmission performance of the plug connector. In addition, the design of the recess of the plug connector reduces the difficulty of manufacturing and processing.

Description

[Technical Field]

[0001] The present invention relates to a board-to-board plug connector. [Background technology]

[0002] Board-to-board connectors are primarily used to enable corresponding mechanical devices to establish electrical connections using circuit boards, thereby enabling the transmission and conduction of electrical signals and power. Summary of the Invention [Problem to be solved by the invention]

[0003] Generally speaking, connectors suitable for Advanced Driver Assistance Systems (ADAS) that realize different levels of autonomous driving functions use floating board-to-board connectors to counter misalignment caused by external forces. However, conventional connector structures have many problems. For example, when the connector height exceeds 7mm, complex processing is often required during the mold manufacturing process to prevent molding failure due to insufficient structural strength. [Means for solving the problem]

[0004] In one embodiment, a board-to-board plug connector is proposed, which addresses the above-mentioned problems. The board-to-board plug connector includes a base, a cover member, and a plurality of plug signal terminals. The base includes two inner walls, a tongue-shaped plate, a recess, and a plurality of signal terminal grooves. The tongue-shaped plate is located on the two inner walls, the signal terminal grooves are located on both sides of the tongue-shaped plate and on the inner wall, and the recess is located between one end of the tongue-shaped plate and the two inner walls. Each plug signal terminal includes a flat contact portion, a fixing portion, and an extension portion. The fixing portion is located in the signal terminal groove, the flat contact portion extends from one end of the fixing portion and is exposed on one of the two sides of the tongue-shaped plate, and the extension portion extends from the other end of the fixing portion and is exposed on one of the two sides of the recess. The cover member is provided in the recess and contacts the extension portion of the plug signal terminal.

[0005] In some embodiments, each signal terminal groove includes an exposed portion, a passage portion, and a communication portion, both ends of the passage portion are respectively connected to the exposed portion and the communication portion, and the flat contact portion interferes with the exposed portion.

[0006] In some embodiments, the exposed portion includes a tapered portion and a storage portion, the distance between both side walls of the tapered portion is smaller than the distance between both side walls of the storage portion, and the free end of the flat contact portion interferes with both side walls of the tapered portion.

[0007] In some embodiments, the obstructing member includes a plurality of ribs that interfere with the two inner walls of the base.

[0008] In some embodiments, the blocking member further includes an end portion, a first contact portion, and a second contact portion, one end of the first contact portion extending toward the second contact portion and the end portion, and the ribs are located at the end portion.

[0009] In some embodiments, the plug further includes a plurality of power terminals for the plug, and both sides of the first contact portion of the blocking member contact the extension portions of the signal terminals for the plug, and the second contact portion of the blocking member contacts the plurality of power terminals for the plug.

[0010] In some embodiments, the thickness of the second contact region is less than the thickness of the first contact region, which is less than the thickness of the end portion.

[0011] In some embodiments, the ratio of the height of the obstruction member to the height of the base is 1:3.

[0012] In some embodiments, the ratio of the height of the obstruction member to the height of the tongue is 1:2.

[0013] In some embodiments, the thickness of the blocking member is greater than the thickness of the tongue.

[0014] In summary, in all embodiments of the present invention, the blocking member not only restricts the pins of each terminal, but also reduces the exposed portion of the terminals to the air, thereby maintaining the high frequency transmission performance of the plug connector. Furthermore, the design of the recess of the plug connector also reduces the difficulty of manufacturing and processing. [Brief explanation of the drawings]

[0015] [Figure 1A] 1 is a schematic exploded view of a floating board-to-board connector assembly according to some embodiments. FIG. [Figure 1B] FIG. 1B is a partial enlarged view of region 1B of FIG. 1A. [Figure 2] 1 is a schematic exploded view of a plug connector according to some embodiments. [Figure 3A] 1 is a schematic three-dimensional view of a signal terminal for a plug according to some embodiments. [Figure 3B] 1 is a schematic three-dimensional view of a power terminal for a plug according to some embodiments. FIG. [Figure 4] FIG. 1B is a schematic cross-sectional view taken along line 4-4 in FIG. 1A. [Figure 5] FIG. 5 is a schematic cross-sectional view of the base at the same position as in FIG. 4 (signal terminals for the plug are not shown). [Figure 6A] 1 is a schematic three-dimensional view of a plug connector according to some embodiments. FIG. [Figure 6B] FIG. 6B is a partial enlarged view of region 6B of FIG. 6A. [Figure 7] 1 is a schematic side view of a blocking member according to some embodiments. [Figure 8A] 8A is a schematic cross-sectional view taken along line 8A-8A in FIG. 1A (showing the arrangement between the covering member, the plug signal terminals, the plug power supply terminals, and the base); [Figure 8B] FIG. 8B is a partial enlarged view of area 8B of FIG. 8A. [Figure 9] 1 is a schematic exploded view of a socket connector according to some embodiments. [Figure 10] 1 is a schematic top view of a socket connector according to some embodiments. FIG. [Figure 11] FIG. 11 is a schematic cross-sectional view taken along line 11-11 in FIG. [Figure 12] FIG. 10 is a schematic top view of a socket connector according to another embodiment. [Figure 13] 1 is a schematic three-dimensional view of a signal terminal for a socket according to some embodiments. [Figure 14A] 1 is a schematic three-dimensional view of a power supply terminal for a socket according to a first embodiment. [Figure 14B] FIG. 10 is a schematic three-dimensional view of a power supply terminal for a socket according to a second embodiment. [Figure 14C] FIG. 10 is a schematic three-dimensional view of a socket power supply terminal according to a third embodiment. [Figure 14D] FIG. 10 is a schematic three-dimensional view of a socket power terminal according to a fourth embodiment. [Figure 14E] FIG. 10 is a schematic three-dimensional view of a socket power supply terminal according to a fifth embodiment. [Figure 15A] FIG. 14B is a partial enlarged view of a portion 15A of FIG. 14A. [Figure 15B] FIG. 14C is a partially enlarged view of a portion 15B of FIG. 14B. [Figure 16] A schematic cross-sectional view of a floating board-to-board connector assembly according to some embodiments (showing the structure when the plug connector and socket connector provided on each of the two circuit boards are electrically connected, with the circuit boards shown by dashed lines). DETAILED DESCRIPTION OF THE INVENTION

[0016] The term "width" in the following embodiments may refer to an average width or the width of a specific portion. The term "connection" may refer to a physical connection, or a direct or indirect connection between physical elements, unless otherwise specified as an electrical connection. The drawings of the present invention are for schematic illustration only, may not be drawn to scale, and may not show all details. This point should be explained in advance. Furthermore, terms such as "one," "two," "upper," and "lower" used in this specification are used for the convenience of explanation and do not limit the scope of the present invention. Changes or adjustments to these relative relationships are also considered to be within the scope of the present invention as long as they do not result in substantial changes to the technical content.

[0017] Please refer to Figures 1A, 1B, 2, 3A, 3B, 4, 5, and 16. Figure 1A is a schematic exploded view of a floating board-to-board connector assembly according to some embodiments. Figure 1B is a partial enlarged view of region 1B in Figure 1A. Figure 2 is a schematic exploded view of a plug connector 1 according to some embodiments. Figure 3A is a three-dimensional schematic view of a plug signal terminal 17 according to some embodiments. Figure 3B is a three-dimensional schematic view of a plug power terminal 12 according to some embodiments. Figure 4 is a schematic cross-sectional view taken along line 4-4 in Figure 1A. Figure 5 is a schematic cross-sectional view of the base 11 at the same position as in Figure 4 (the plug signal terminal 17 is not shown). Figure 16 is a schematic cross-sectional view of a floating board-to-board connector assembly according to some embodiments (showing a structure when a plug connector 1 and a socket connector 2 provided on two circuit boards 3 and 4, respectively, are electrically connected, with the circuit boards 3 and 4 indicated by dashed lines).

[0018] Referring to FIG. 1A, a floating board-to-board connector assembly includes a plug connector 1 and a socket connector 2, and the floating board-to-board connector assembly is suitable for installation in an advanced driver assistance system for in-vehicle devices, such as an audiovisual device or an autonomous driving device. Referring to FIG. 16, the plug connector 1 is suitable for installation on the surface of a circuit board 3, and is suitable for electrical connection with a socket connector 2 installed on another circuit board 4. In the following description, the specific structure of the plug connector 1 will first be described using several embodiments, and then the specific structure of the socket connector 2 will be described using other embodiments. For convenience of explanation, in the following embodiments, when the plug connector 1 installed on the circuit board 3 and the socket connector 2 installed on the circuit board 4 are mated (see FIG. 16), the side on which the circuit board 3 is located will be referred to as the "top side" or "upper side," and the opposite side (i.e., the side on which the circuit board 4 is located) will be referred to as the "bottom side" or "lower side."

[0019] Referring to Fig. 2, the plug connector 1 mainly includes a base 11, a cover member 13, and a plurality of plug signal terminals 17. Referring to Figs. 4 and 5, the base 11 includes two inner side walls 16, a tongue-shaped plate 15, a recess 30, and a plurality of signal terminal grooves 100. The inner side wall 16 is an inner surface extending downward from the top surface of the base 11. The tongue-shaped plate 15 is located between the two inner side walls 16, and one end of the tongue-shaped plate 15 is not flush with the top surface of the base 11, while the other end extends downward and is not flush with the inner side walls 16. The recess 30 is located between one end of the tongue-shaped plate 15 and the two inner side walls 16, and is a portion recessed from the top surface of the base 11 toward the tongue-shaped plate 15. The signal terminal grooves 100 are located on both sides of the tongue 15 and on the inner wall 16, and each plug signal terminal 17 is located in a corresponding signal terminal groove 100 (see FIG. 4). Referring to FIG. 3A, each plug signal terminal 17 includes a flat contact portion 172, a fixing portion 174, an extension portion 176, and a soldering portion 178. The fixing portion 174 is located in the signal terminal groove 100 and engaged with the inner wall 16. The flat contact portion 172 extends from one end of the fixing portion 174 and is exposed on one of the two sides of the tongue 15. The extension portion 176 extends from the other end of the fixing portion 174 and is exposed on one of the two sides of the recess 30. The extension portion 176 curves and extends along the inner wall 16 and the top surface of the base 11 to the soldering portion 178. That is, the soldering portion 178 is located at the top end of the plug signal terminal 17, and the flat contact portion 172 is located at the bottom end of the plug signal terminal 17. The blocking member 13 is provided in the recess 30, and both sides of the blocking member 13 contact the extension portion 176 of the plug signal terminal 17. Referring to FIG. 4 , the vertical portion 176a of the extension portion 176 is located between the blocking member 13 and the inner wall 16, and the radial portion 176b of the extension portion 176 is located on the top surface of the base 11. The soldering portion 178 extends from one end of the extension portion 176 and is exposed to the base 11. In some embodiments, the blocking member 13 may be made of, for example, plastic. The blocking member 13 thus restricts the pins of each terminal. Because there is a difference between the dielectric constant of air and the dielectric constant of the base 11, this difference affects the high-frequency transmission performance of the connector.Therefore, by reducing the portion of the terminal exposed to air, the blocking member 13 can maintain the high-frequency transmission performance of the plug connector 1. Also, if the insertion length of the core is too long (for example, if it exceeds 7 mm) during the manufacturing process using a mold, the core becomes prone to bending. However, the design of the recess 30 of the plug connector 1 can reduce the difficulty of manufacturing and processing.

[0020] Please refer to Figures 6A, 6B, 7, 8A, and 8B. Figure 6A is a schematic three-dimensional view of a plug connector 1 according to some embodiments. Figure 6B is a partially enlarged view of a portion 6B in Figure 6A. Figure 7 is a schematic side view of a blocking member 13 according to some embodiments. Figure 8A is a schematic cross-sectional view taken along line 8A-8A in Figure 1A. Figure 8B is a partially enlarged view of a portion 8B in Figure 8A.

[0021] 5, in some embodiments, the tongue 15 extends from one-third of the height of the inner wall 16 toward the bottom of the base 11 and is exposed from the base 11. Each signal terminal groove 100 includes an exposed portion 102, a passage portion 104, and a communicating portion 106. Both ends of the passage portion 104 are communicated with the exposed portion 102 and the communicating portion 106, respectively. The exposed portion 102 is located at the bottom of the base 11, and the communicating portion 106 is located at the top of the base 11. The communicating portions 106 of two adjacent or opposing signal terminal grooves 100 communicate with each other to form a recess 30. Referring to FIG. 4, the flat contact portion 172 of the plug signal terminal 17 is located at the exposed portion 102, the fixing portion 174 is located at the passage portion 104, and the extension portion 176 is located at the communicating portion 106, and the flat contact portion 172 interferes with the exposed portion 102.

[0022] 6A and 6B, the exposed portion 102 of the signal terminal groove 100 includes a tapered portion 102a and a receiving portion 102b. The distance D1a between the two sidewalls of the tapered portion 102a is smaller than the distance D1b between the two sidewalls of the receiving portion 102b. Specifically, the free end of the flat contact portion 172 is in close contact with the two sidewalls of the tapered portion 102a, forming a gap G between the flat contact portion 172 and the two sidewalls of the receiving portion 102b. That is, the width of the flat contact portion 172 is substantially the same as the distance D1a but smaller than the distance D1b. This causes the free end of the flat contact portion 172 to interfere with the two sidewalls of the signal terminal groove 100 (the tapered portion 102a). This results in the plug signal terminal 17 having an "anti-warp PIN" structure design. This reduces the risk of damage to the terminal during the mating process between the plug connector 1 and the socket connector 2.

[0023] 6A, in some embodiments, a guide groove 113 is provided at the bottom of the base 11, the tongue plate 15 protrudes outward from the guide groove 113, the exposed portion 102 is exposed in the guide groove 113, and both ends of the guide groove 113 are chamfered. The guide groove 113 is suitable for connecting to the floating seat 23 of the socket connector 2, and provides a space for accommodating the socket connector 2 when connected to the floating seat 23.

[0024] 8A , in some embodiments, the base 11 includes a plurality of undercut grooves 32 for balancing the thickness of the base 11. These undercut grooves 32 are symmetrically arranged on both sides of the base 11 along the center of the base 11. Taking FIG. 8A as an example, the four undercut grooves 32 are located at diagonal positions on the base 11. Therefore, by making the overall thickness of the base 11 uniform during the process of raising a mold to manufacture a connector, problems such as molding defects and insufficient filling can be reduced.

[0025] 2 , in some embodiments, the plug connector 1 does not include the power plug terminal 12. In some embodiments, the plug connector 1 further includes a plurality of power plug terminals 12, and the base 11 further includes a plurality of power terminal grooves 120, each power plug terminal 12 corresponding to one of the power terminal grooves 120. The power terminal grooves 120 are located on both sides of the tongue 15 and on the inner wall 16, and the power plug terminals 12 are located in the power terminal grooves 120. The signal terminal grooves 100 are located in the center of the base 11, and the power terminal grooves 120 are adjacent to both ends of the base 11. The power plug terminal 12 includes a wide portion 121, a serpentine portion 127, and a soldering portion 128. The serpentine portion 127 is located between the wide portion 121 and the soldering portion 128, and the wide portion 121 is located in the power terminal groove 120. The serpentine portion 127 is located in the center of the base 11, and the power terminal grooves 120 are adjacent to both ends of the base 11. The power plug terminal 12 includes a wide portion 121, a serpentine portion 127, and a soldering portion 128. The serpentine portion 127 is located between the wide portion 121 and the soldering portion 128, and the wide portion 121 is located in the power terminal groove 120. The soldering portion 128 is located on the top surface of the base 11 and is exposed to the base 11 .

[0026] 3A and 3B, the width of the plug power terminal 12 is greater than the width of the plug signal terminal 17. In some embodiments, the average width of the narrowest portion of the plug power terminal 12 (e.g., the soldering portion 128) is greater than the average width of the widest portion of the plug signal terminal 17 (e.g., the width W7 of the vertical portion 176a in FIG. 3A). In some embodiments, the width W27 of the serpentine portion 127 of the plug power terminal 12 is greater than the width of the plug signal terminal 17 or is greater than the width W7 of the extended portion 176 (the vertical portion 176a) of the plug signal terminal 17. In some embodiments, referring to FIG. 3B, the width W21 of the wide portion 121 of the plug power terminal 12 is greater than the width W27 of the serpentine portion 127, and the width W27 of the serpentine portion 127 is greater than the width W28 of the soldering portion 128. The width W27 of the serpentine portion 127 gradually decreases from the wide portion 121 toward the soldering portion 128. In some embodiments, the current capacity of the plug power terminal 12 is 3 amperes, the current capacity of the plug signal terminal 17 is 0.5 amperes, and the width W27 of the serpentine portion 127 of the plug power terminal 12 is in the range of 0.5 to 0.7 times the width W21 of the wide portion 121. In this way, the width W27 of the serpentine portion 127 of the plug power terminal 12 is widened, which not only maintains the large current transmission function but also improves the heat dissipation capability of the plug connector 1.

[0027] 1B and 2, in some embodiments, the base 11 includes a flange 111 protruding from the top surface of the base 11, the wide portion 121 of the plug power terminal 12 is located within the power terminal groove 120, and the serpentine portion 127 extends eccentrically from the opening of the power terminal groove 120 toward the flange 111. "Eccentric" refers to a deviation from the center of symmetry, which may be the plug power terminal 12, the wide portion 121 of the plug power terminal 12, the opening of the power terminal groove 120, or the center of symmetry of the base 11. The soldering portion 128 abuts the flange 111 and extends radially outward. Referring to FIG. 3B, steps are provided at both ends of the serpentine portion 127.

[0028] 1B , in some embodiments, the serpentine portion 127 of the plug power terminal 12 tapers from the wide portion 121 toward the solder portion 128, and the solder portion 128 and the wide portion 121 extend eccentrically. Referring to FIG. 1B , the serpentine portion 127 extends in a curved manner from the wide portion 121 toward the solder portion 128 in a direction away from the plug signal terminal 17 (solder portion 178), for example, from right to left as viewed in FIG. 1B . In other words, the radial centerline Z8 of the solder portion 128 is on one side of the radial centerline Z1 of the wide portion 121, and the two are not aligned. The distance between the wide portion 121 of the plug power terminal 12 and the plug signal terminal 17 is smaller than the distance between the solder portion 128 of the plug power terminal 12 and the plug signal terminal 17. In other words, the distance from the radial center line Z1 to the radial center line Z7 of the plug signal terminal 17 is shorter than the distance from the radial center line Z8 to the radial center line Z7 of the plug signal terminal 17. In this way, the distance between the soldered portion 128 of the plug power terminal 12 and the plug signal terminal 17 is increased, thereby improving the heat dissipation capability of the plug connector 1.

[0029] 6B , in some embodiments, the power terminal groove 120 includes an exposed portion 122 located at the bottom of the base 11. The exposed portion 122 includes a tapered portion 122a and a receiving portion 122b, and the distance D2a between both side walls of the tapered portion 122a is smaller than the distance D2b between both side walls of the receiving portion 122b. Specifically, a portion of the wide portion 121 of the plug power terminal 12 is located at the exposed portion 122 of the power terminal groove 120, and the free ends of the wide portion 121 are in close contact with both side walls of the tapered portion 122a, forming a gap between the wide portion 121 and both side walls of the receiving portion 122b. That is, the width of the free end of the wide portion 121 is substantially the same as the distance D2a but smaller than the distance D2b, and the free end of the wide portion 121 interferes with both side walls of the power terminal groove 120 (the tapered portion 122a). Since the widened portion 121 interferes with the corresponding power terminal groove 120, the plug power terminal 12 has an "anti-warp PIN" structure design.

[0030] 4 and 5, in some embodiments, the ratio of the height x 3 of the blocking member 13 to the height x 10 of the base 11 is about 1:3, the ratio of the height x 3 of the blocking member 13 to the height x 5 of the tongue-shaped plate 15 is about 1:2, and the thickness L3 of the blocking member 13 is greater than the thickness L5 of the tongue-shaped plate 15 to restrict the pins of each terminal. From the perspective of FIG. 4, the height is the vertical distance between the top and bottom surfaces of the component, and the thickness is the horizontal distance between two opposite side surfaces of the component. Specifically, referring to Figure 7, the blocking member 13 includes two end portions 132, a first contact portion 136, two second contact portions 134, and a plurality of ribs 131, one end of the first contact portion 136 extending sequentially toward the second contact portion 134 and the end portion 132, the ribs 131 being located at the end portion 132, the ribs 131 extending downward from the top of the blocking member 13, and the height x 31 of each rib 131 being smaller than the height x 3 of the blocking member 13, where the height x 31 is the vertical distance between the bottom end of the rib 131 and the top surface of the blocking member 13. Referring to FIG. 8B, the first contact portion 136 corresponds to the position of the plug signal terminal 17 (or the signal terminal groove 100 of the base 11), the second contact portion 134 corresponds to the position of the plug power terminal 12 (or the power terminal groove 120 of the base 11), the rib 131 interferes with the two inner walls 16 of the base 11, both sides of the first contact portion 136 of the blocking member 13 contact the extension portion 176 (vertical portion 176a) of the plug signal terminal 17, the second contact portion 134 of the blocking member 13 contacts the wide portion 121 of the plug power terminal 12, the thickness L34 of the second contact portion 134 is smaller than the thickness L36 of the first contact portion 136, and the thickness L36 of the first contact portion 136 is smaller than the thickness L32 of the end portion 132.

[0031] Meanwhile, please refer to Figures 9, 10, 11, 12, 13, 14A, 14B, and 15B. Figure 9 is a schematic exploded view of a socket connector 2 according to some embodiments. Figure 10 is a schematic top view of a socket connector 2 according to some embodiments. Figure 11 is a schematic cross-sectional view taken along line 11-11 in Figure 10. Figure 12 is a schematic top view of a socket connector 2 according to another embodiment. Figure 13 is a three-dimensional schematic view of a socket signal terminal 27 according to some embodiments. Figure 14A is a three-dimensional schematic view of a socket power terminal 25 according to Example 1. Figure 14B is a three-dimensional schematic view of a socket power terminal 25 according to Example 2. Figure 15B is a partially enlarged view of a portion 15B in Figure 14B.

[0032] Referring to Figure 9, the socket connector 2 includes a fixed base 21, a floating base 23, a plurality of socket signal terminals 27, and a plurality of socket power terminals 25. The fixed base 21 has a through-groove 20, and the floating base 23 is located in the through-groove 20. The fixed base 21 has a plurality of signal terminal grooves 22 and a plurality of power terminal grooves 24. The power terminal grooves 24 are located at both ends of the floating base 23, and the signal terminal grooves 22 are located in the center of the floating base 23. In some embodiments, the floating base 23 has two guide ends 233 on its top, which protrude outward from both ends of the top surface of the floating base 23 and are chamfered. In some embodiments, the guide displacement of the misalignment between the plug connector 1 and the socket connector 2 reaches 1.30 mm. This improves the guiding performance and misalignment mating capability of the product during installation.

[0033] 9, the socket power terminals 25 are provided in the power terminal grooves 24, and the socket signal terminals 27 are provided in the signal terminal grooves 22. Both ends of the socket signal terminal 27 are connected to the fixed base 21 and the floating base 23, respectively, and both ends of the socket power terminal 25 are connected to the fixed base 21 and the floating base 23, respectively. That is, the fixed base 21 and the floating base 23 are indirectly connected via the socket signal terminals 27 and the socket power terminals 25, and the fixed base 21 and the floating base 23 do not come into contact with each other. Referring to FIG. 16, in some embodiments, the floating base 23 has a movement margin (also called a float) of approximately ±0.8 mm on the X-axis or Z-axis, and a movement margin of approximately ±0.5 mm on the Y-axis. As a result, the plug connector 1 and the socket connector 2 are connected facing each other in a floating manner, and the floating seat 23 of the socket connector 2 has room to move in multiple axes within the through groove 20 of the fixed seat 21, allowing it to absorb external forces during vibration. At the same time, the stability of the floating seat 23 is maintained, allowing for good electrical connection to be maintained.

[0034] 9 and 13, the socket signal terminal 27 includes a contact portion 274, a first fixing portion 271, a second fixing portion 272, a connecting portion 273, and a soldering portion 275, wherein the first fixing portion 271 is engaged with the inner wall of the floating base 23, the second fixing portion 272 is engaged with the fixed base 21, the contact portion 274 extends from one end of the first fixing portion 271 and protrudes toward the inside of the floating base 23, the connecting portion 273 extends from the other end of the first fixing portion 271 to the second fixing portion 272, and the soldering portion 275 extends from one end of the second fixing portion 272 and is exposed to the fixed base 21. In some embodiments, the connection portion 273 is the widest portion of the socket signal terminal 27, i.e., the width of the connection portion 273 is greater than the width of the contact portion 274, the first fixing portion 271, the second fixing portion 272, or the soldering portion 275. In some embodiments, the structure of the socket signal terminal 27 in the signal terminal groove 22 is the same as the structure shown in FIG. 11 , see the description of the following example.

[0035] The structure of the socket power terminal 25 will be described in detail below with reference to several examples.

[0036] 11, the power terminal grooves 24 are located on the inner surface of the floating base 23 and include opposing connection portions 242 and locking portions 244, and the opposing connection portions 242 of two opposing power terminal grooves 24 are connected to each other to provide opposing connection spaces for connecting to the plug connector 1. A partition wall 231 of the floating base 23 separates the locking portions 244 of the two opposing power terminal grooves 24.

[0037] The socket power terminal 25 includes a contact portion 254, a first fixing portion 251, a second fixing portion 252, a connecting portion 253, and a soldering portion 255, the contact portion 254 being located at the opposing connecting portion 242 of the power terminal groove 24 and configured to come into contact with the wide portion 121 of the plug power terminal 12 of the plug connector 1. The first fixing portion 251 of the socket power terminal 25 is engaged with the inner wall of the floating base 23 (i.e., the engaging portion 244 of the power terminal groove 24), the second fixing portion 252 is engaged with the fixed base 21, and the contact portion 254 extends from one end of the first fixing portion 251 to the inside of the floating base 23. 11 and 14A, the connection portion 253 extends from the other end of the first fixing portion 251 to the second fixing portion 252, and both ends of the second fixing portion 252 extend to the connection portion 253 and the soldering portion 255, respectively, and the soldering portion 255 is exposed to the fixed base 21. The narrowest part of the socket power terminal 25 is the connection portion 253. Specifically, the connection portion 253 includes a first curved portion 2531, an inclined portion 2533, and a second curved portion 2532, the inclined portion 2533 is located between the floating base 23 and the fixed base 21, the first curved portion 2531 is located on the bottom surface of the floating base 23, and the second curved portion 2532 is located on the inner surface of the fixed base 21. The first curved portion 2531 extends from one end of the first fixing portion 251 to the inclined portion 2533, and both ends of the second curved portion 2532 extend to the inclined portion 2533 and the second fixing portion 252, respectively. Referring to FIGS. 14B and 15B , the second fixing portion 252 has a one-piece structure, does not have a groove, and includes a first plate portion 252b and a second plate portion 252a, where the first plate portion 252b extends to the second curved portion 2532 and the second plate portion 252a extends to the soldering portion 255, and the width W32 of the second curved portion 2532 is smaller than the width W2 of the second fixing portion 252. In some embodiments, the second plate portion 252a has flanges on opposite sides that are engaged with the fixing base 21. Opposite sides of the first plate portion 252b gradually narrow toward the center (ie, the connection portion with the second curved portion 2532) and extend toward the second curved portion 2532.

[0038] Taking FIG. 14A as an example, first fixing portion 251, connecting portion 253, and second fixing portion 252 have a continuous, integrated structure and do not have grooves. The average width W31 of first curved portion 2531, width W33 of inclined portion 2533, and width W32 of second curved portion 2532 is width W3 of connecting portion 253, which is smaller than width W1 of first fixing portion 251 or width W2 of second fixing portion 252. In this way, the bent portion (e.g., connecting portion 253) of socket power terminal 25 has a tapered design, allowing socket power terminal 25 to maintain good elasticity even under a high-current capacity design and adapt to positional displacement due to external force. Furthermore, the increased areas of first fixing portion 251 and second fixing portion 252 enhance heat dissipation and thermal conduction, facilitating the transmission of large currents.

[0039] Referring to Fig. 10, in some embodiments, the socket connector 2 includes four socket power terminals 25, which are symmetrically arranged in the power terminal grooves 24a, 24b, 24c, and 24d. For example, the power terminal grooves 24a and 24b are located at one end of the floating base 23, and the power terminal grooves 24c and 24d are located at the other end of the floating base 23. As shown in Fig. 10, the power terminal grooves 24a, 24b, 24c, and 24d are located at four diagonal positions of the floating base 23, respectively. Referring to Fig. 12, in some embodiments, the socket connector 2 includes two socket power terminals 25a and 25d, which are symmetrically arranged in the power terminal grooves 24a and 24d. For example, as shown in FIG. 12, the socket power terminal 25a and the socket power terminal 25d are respectively provided in the power terminal grooves 24a and 24d at opposite ends of the floating base 23, and are respectively located at two diagonal positions of the floating base 23. The socket power terminal 25a and the socket power terminal 25d are respectively arranged on opposite sides of the central axis C of the floating base 23, and the vertical distances from the socket power terminal 25a and the socket power terminal 25d to the central axis C are equal.

[0040] Please refer to Figures 14C, 14D, 14E and 15A. Figure 14C is a schematic three-dimensional view of a socket power supply terminal 25 according to Example 3. Figure 14D is a schematic three-dimensional view of a socket power supply terminal 25 according to Example 4. Figure 14E is a schematic three-dimensional view of a socket power supply terminal 25 according to Example 5. Figure 15A is a partially enlarged view of a portion 15A in Figure 14A.

[0041] 14A and 14D, in some embodiments, the contact region 254 includes a plurality of free contact ends, which may be three free contact ends 254a, 254b, and 254c (FIG. 14A) or two free contact ends 254a and 254c (FIG. 14D). Referring to FIG. 14A, in some embodiments, the free contact ends 254a, 254b, and 254c are parallel to each other, with a spacing S between two adjacent free contact ends. In other words, a groove is provided in the contact region 254 of the socket power terminal 25. The width W54 of each free contact end 254a, 254b, and 254c is smaller than the width W3 of the connection region 253. In some embodiments, the width W3 of the connection region 253 is 0.6 mm, and the width W54 of each free contact end 254a, 254b, and 254c is approximately 0.4 mm to 0.45 mm. In this way, the socket power terminals 25 and the plug power terminals 12 of the plug connector 1 are in multi-point contact, which increases the elasticity of the terminals while maintaining the maximum current flow (also known as current capacity) of the terminals. In addition, to design a more compact connector, the current capacity of the terminals can be increased and a terminal design with good elasticity can be provided, making the application scenarios of the connector more flexible, convenient, and reliable.

[0042] 14A and 15A, in some embodiments, the contact region 254 has three free contact ends 254a, 254b, and 254c, and the connection between the free contact ends 254a, 254b, and 254c is a base 2540 of the contact region 254, and the width of the base 2540 is substantially the same as the width W1 of the first fixing region 251, and the first fixing region 251 has a locking portion 251a and a tapered portion 251b, where the locking portion 251a extends toward the base 2540 of the contact region 254, and the tapered portion 251b extends toward the connecting region 253. In some embodiments, the locking portion 251a has flanges on opposite sides, and these flanges are locked to the inner wall of the floating seat 23. Opposite sides of the gradually narrowing portion 251b gradually narrow toward the center (ie, the connection portion with the connection portion 253) and extend toward the connection portion 253.

[0043] The specific structure of the connection portion 253 of the socket power terminal 25 will be described below with reference to several examples.

[0044] 14A , in some embodiments, the width W1 of the first fixing region 251 is the same as the width W2 of the second fixing region 252. The width W5 of the soldering region 255 is greater than the width W3 of the connection region 253 but less than the width W1. The widths of the first curved portion 2531, the inclined portion 2533, and the second curved portion 2532 are all the same. Note that the width W3 of the connection region 253 is greater than or equal to the width of the socket signal terminal 27.

[0045] 14B , in some embodiments, the width W31 of the first curved portion 2531 and the width W32 of the second curved portion 2532 of the connection region 253 are both smaller than the width W33 of the inclined portion 2533. That is, the first curved portion 2531 and the second curved portion 2532 are narrower portions of the connection region 253. The width W31 is the same as the width W32, and the width W33 is smaller than the width W1 but larger than the width W31. Note that the contact region 254 has three free contact ends 254a, 254b, and 254c, and the width W54 of each of the free contact ends 254a, 254b, and 254c is smaller than the width W31 and the width W32. In some embodiments, the ratio of the width W54 to the width W31 is 2:3.

[0046] 14C , in some embodiments, the width W1 of the first fixing portion 251, the width W2 of the second fixing portion 252, and the width W33 of the inclined portion 2533 are the same, and the width W31 of the first curved portion 2531 and the width W32 of the second curved portion 2532 may be the same or different. Both the width W31 and the width W32 are greater than the width of the socket signal terminal 27.

[0047] 14D , in some embodiments, the contact region 254 has two free contact ends 254a, 254c, the width W33 of the inclined portion 2533 is greater than the distance S between the free contact ends 254a, 254c, the distance S is greater than the width W54 of the free contact ends 254a, 254c, the width W31 of the first curved portion 2531 and the width W32 of the second curved portion 2532 are both greater than the width W54, and the widths W31 and W32 are smaller than the distance S. In some embodiments, the sum of the distance S and the width W54 of the two free contact ends 254a, 254c is the width of the base 2540 of the contact region 254, and the width of the base 2540 is substantially the same as the width W1 of the first fixing region 251.

[0048] Referring to FIG. 14E, in some embodiments, the contact region 254 has two contact free ends 254a, 254c, and the width W31 of the first curved portion 2531 and the width W32 of the second curved portion 2532 are both smaller than the width W54 of the contact free ends 254a, 254c, the width W31 of the first curved portion 2531 is larger than the spacing S between the contact free ends 254a, 254c, and the spacing S is smaller than the width W54.

[0049] Although the present invention has disclosed preferred embodiments as described above, these do not limit the present invention in any way, and anyone familiar with the art may make various modifications and adaptations within the spirit and scope of the present invention, and such modifications and adaptations should be included in the scope of the present invention. Therefore, the scope of protection of the present invention is determined based on the content specified in the claims attached hereto. [Explanation of symbols]

[0050] 100 Signal terminal groove 102 Exposed areas 102a Reduction section 102b Storage section 104 Passage part 106 Communication part 1 plug connector 11 Foundation 111 flange 113 Guide groove 12 Power terminal for plug 120 Power terminal groove 121 Wide area 122 Exposed areas 122a Constriction section 122b Storage section 127 Serpentine area 128 Soldering area 13 Closing member 131 Ribs 132 End 134 Second contact site 136 1st contact site 15 tongue plate 16 Inner wall 17 Plug signal terminal 172 Flat contact area 174 Fixed area 176 Extension site 176a Vertical section 176b Radial section 178 Soldered parts 20 Through groove 2-socket connector 21 Fixed base 22 Signal terminal groove 23 Floating seat 231 Partition Wall 233 Guide end 24, 24a, 24b, 24c, 24d power terminal groove 242 Opposite connection part 244 Locking part Power terminal for 25, 25a, 25d sockets 251 1st fixation site 251a Locking part 251b Reduction part 252 Second fixation site 252a 2nd plate part 252b 1st plate part 253 Connection Site 2531 First curve 2532 Second curved section 2533 Slope 254 Contact site 254a, 254b, 254c Contact free end 2540 base 255 soldered parts 27 Socket signal terminal 271 1st fixation site 272 Second fixation site 273 Connection Site 274 Contact site 275 soldered parts 30 recess 3, 4 Circuit board 32 Relief groove C center axis D1a, D1b, D2a, D2b distance G Gap L3, L5, L32, L34, L36 thickness S interval W1, W2, W3, W5, W7, W21, W27, W28, W31, W32, W33, W54 width x3, x5, x10, x31 height Z1, Z7, Z8 Radial center line

Claims

1. a base including two inner side walls, a tongue-shaped plate, a recess, and a plurality of signal terminal grooves, the tongue-shaped plate being located on the two inner side walls, the plurality of signal terminal grooves being located on both sides of the tongue-shaped plate and the two inner side walls, and the recess being located between one end of the tongue-shaped plate and the two inner side walls; a plurality of plug signal terminals, each including a fixing portion located in each of the signal terminal grooves, a flat contact portion extending from one end of the fixing portion and exposed on one of both sides of the tongue-shaped plate, and an extension portion extending from the other end of the fixing portion and exposed on one of both sides of the recess; a blocking member provided in the recess and in contact with the extension portions of the plurality of plug signal terminals; A board-to-board plug connector comprising:

2. 2. The board-to-board plug connector of claim 1, wherein each of the signal terminal grooves includes an exposed portion, a passage portion, and a communicating portion, both ends of the passage portion are respectively connected to the exposed portion and the communicating portion, and the flat contact portion interferes with the exposed portion.

3. 3. The board-to-board plug connector of claim 2, wherein the exposed portion includes a tapered portion and a accommodating portion, the distance between both side walls of the tapered portion is smaller than the distance between both side walls of the accommodating portion, and the free end of the flat contact portion interferes with the both side walls of the tapered portion.

4. The board-to-board plug connector according to claim 1 , wherein the blocking member includes a plurality of ribs that interfere with the two inner walls of the base.

5. 5. The board-to-board plug connector of claim 4, wherein the blocking member further includes an end portion, a first contact portion, and a second contact portion, one end of the first contact portion extending toward the second contact portion and the end portion, and the plurality of ribs are located at the end portion.

6. 6. The board-to-board plug connector of claim 5, further comprising a plurality of plug power terminals, wherein both sides of the first contact portion of the blocking member contact the extension portions of the plug signal terminals, and the second contact portion of the blocking member contacts the plurality of plug power terminals.

7. 6. The board-to-board plug connector of claim 5, wherein the thickness of said second contact region is less than the thickness of said first contact region, and the thickness of said first contact region is less than the thickness of said end portion.

8. 2. The board-to-board plug connector according to claim 1, wherein a ratio of a height of said closing member to a height of said base is 1:

3.

9. 2. The board-to-board plug connector according to claim 1, wherein a ratio of a height of said closing member to a height of said tongue-shaped plate is 1:

2.

10. 2. The board-to-board plug connector according to claim 1, wherein the thickness of said closing member is greater than the thickness of said tongue-shaped plate.

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