Sinking plate type board-to-board socket connector

Abstract

The utility model relates to a sinking plate type board-to-board socket connector, which is suitable for being arranged on a circuit board and comprises a base, a plurality of socket terminals and two socket pressing plate pieces, an insertion part of the base penetrates through the circuit board, the socket terminals are arranged on the base, each socket terminal comprises an elastic contact section, an extension section and a welding section, the elastic contact section is located in the butt joint space of the inserting part, the extension section is located on the top face of the base and bent along the outer side face of the base, the elastic contact section extends to the lower opening from one end of the extension section, and the welding section extends from the other end of the extension section and protrudes out of the outer side face of the base. The socket pressing plate piece is arranged on the abutting portion of the base, and the welding pins, the welding sections and the bottom face of the abutting portion of the socket pressing plate piece are located on the same horizontal plane and make contact with the surface of the circuit board. Therefore, the sinking plate type socket connector can reduce the distance between the circuit board and the circuit board on the plug connector, and improves the installation success rate.

Description

Technical Field

[0001] This utility model relates to an electrical connector, and more particularly to a recessed plate-to-plate socket connector. Background Technology

[0002] Board-to-board connectors are mainly used to enable corresponding mechanical devices to establish electrical connections using their respective circuit boards, thereby allowing electrical signals and power to be transmitted and conducted.

[0003] Since conventional board-to-board socket connectors and board-to-board plug connectors are soldered onto the circuit board and their positions are fixed after mating, this structure is prone to many problems. For example, because the board-to-board socket connector is fixed to the circuit board, the overall height is also fixed. When the installation space for electronic devices is small, this board-to-board socket connector is prone to installation difficulties, increasing the installation failure rate, and may even make it impossible to complete the mating operation with the board-to-board plug connector. Utility Model Content

[0004] In view of the above problems, in one embodiment, a recessed board-to-board socket connector suitable for mounting on a circuit board is provided. The recessed board-to-board socket connector includes a base, a plurality of socket terminals, and two socket pressure plates. The base includes an insertion portion and two abutting portions. The two abutting portions abut against the surface of the circuit board. The insertion portion passes through the circuit board and has a mating space. Each socket terminal is disposed on the base. Each socket terminal includes a resilient contact section, an extension section, and a soldering section. The resilient contact section is located in the mating space. The extension section is located on the top surface of the base and bends along the outer side of the base. The resilient contact section extends from one end of the extension section to a lower opening. The soldering section extends from the other end of the extension section and protrudes outward from the outer side of the base. In addition, the two socket pressure plates are respectively disposed on the two abutting portions. Each socket pressure plate has a solder foot. The solder foot, the soldering section, and the bottom surface of the abutting portion are located on the same horizontal plane and contact the surface of the circuit board.

[0005] Preferably, the base further includes a plurality of terminal slots and a plurality of terminal channels, the terminal slots being located between two abutment portions, and the soldering section of the socket terminal protruding out of the terminal slot. Each terminal channel extends from the top surface of the base toward the bottom surface of the insertion portion, the terminal channel corresponding to the terminal slot, and the elastic contact section of the socket terminal located in the terminal channel.

[0006] Preferably, the length of each terminal slot is less than the depth of each terminal channel. Each terminal channel includes a mating section and a lower opening section. The mating sections of two opposing terminal channels are connected and have a mating interface to form a mating space. The lower opening section connects to the mating section and has a lower opening located on the bottom surface of the base and on one side of the mating interface.

[0007] Preferably, the mating section has a bottom partition wall that separates the mating interface from the lower opening, and the free end of the elastic contact section selectively abuts against the bottom partition wall and moves away from the bottom partition wall.

[0008] Preferably, the extension of each socket terminal has an outer portion, a top portion, and an inner portion, with the top portion located on the top surface of the base, the outer portion of each socket terminal located in each terminal slot, and the inner portion hooking into the mating section of the corresponding terminal channel.

[0009] Preferably, the distance between the top of the extension of each socket terminal and the soldering section is less than the distance between the top of the extension and the free end of the elastic contact section.

[0010] Preferably, the elastic contact section of each socket terminal has a protrusion and a free end, the protrusion being located in the mating section of the terminal channel, and the free end being located in the lower opening section of the terminal channel.

[0011] Preferably, each supporting part protrudes outward from the outer side of the base, and the insertion part has two guide post holes, each guide post hole extending from the bottom surface of the base toward the top surface of the base.

[0012] Preferably, the bottom surface of the base is provided with a mating interface and a plurality of lower openings. The center line of the mating interface and the center line of the two guide pin holes are aligned with the central axis of the insertion part. The mating interface is located between the two guide pin holes. These lower openings are symmetrically arranged on both sides of the mating interface.

[0013] Preferably, the thickness of each supporting part is substantially equal to the vertical distance from the bottom surface of each supporting part to the bottom surface of the base.

[0014] Due to the adoption of the above technical solution, this utility model has the following beneficial effects:

[0015] The height of the soldered section of the socket terminal on the outer side of the base corresponds to the height of the socket connector recessed onto the circuit board. Recessed socket connectors reduce the distance between the circuit board and the circuit board on the plug connector. Furthermore, the socket connector design can be adjusted according to the installation space limitations of electronic devices to improve installation success rate. Attached Figure Description

[0016] Figure 1 An exploded view of a floating board-to-board connector assembly mounted on a circuit board, according to some embodiments, is shown.

[0017] Figure 2 An exploded view of a floating board-to-board connector assembly according to some embodiments is shown.

[0018] Figure 3 An exploded view of a socket connector according to some embodiments is shown.

[0019] Figure 4 Drawing basis Figure 3 A cross-sectional view at position 4-4.

[0020] Figure 5 Drawing basis Figure 3 A cross-sectional view at position 5-5.

[0021] Figure 6 A perspective view of a socket terminal is shown according to some embodiments.

[0022] Figure 7 An exploded view of a plug connector according to some embodiments is shown.

[0023] Figure 8 A perspective view of plug terminals according to some embodiments is shown.

[0024] Figure 9 A perspective view of a floating board-to-board connector assembly according to some embodiments is shown, without showing the circuit board.

[0025] Figure 10 Drawing basis Figure 9 A cross-sectional view showing the position marked 10-10.

[0026] Figure 11 Drawing basis Figure 9 The cross-sectional diagram (I) at position 11-11 is shown. The circuit board is represented by a dotted chain line, the floating seat is represented by a solid line indicating that the floating seat is in its original position P1, and the floating seat is represented by a dashed line indicating that the floating seat is in its wobbling position.

[0027] Figure 12 Drawing basis Figure 9 The cross-sectional diagram (II) marked at position 11-11 shows the floating seat in the vibration position, with the circuit board represented by a single chain line.

[0028] Symbol Explanation

[0029] 1: Socket connector

[0030] 10: Base

[0031] 100: Insertion Section

[0032] 102: Docking Space

[0033] 103: Terminal slot

[0034] 103a: Terminal slot

[0035] 103b: Terminal Channel

[0036] 103c: Upper open segment

[0037] 103d: Docking section

[0038] 103e: Lower opening segment

[0039] 104: Resistance Section

[0040] 105: Top partition wall

[0041] 106: Guide post hole

[0042] 107: Bottom partition wall

[0043] 108: Lower opening

[0044] 110: Outer side

[0045] 111,114: Bottom surface

[0046] 112: Interface

[0047] 12: Socket terminals

[0048] 120: Elastic contact section

[0049] 120a:convex part

[0050] 120b: Free end

[0051] 122: Extension

[0052] 122a: Outer side

[0053] 122b: Top

[0054] 122c: Inner side

[0055] 124: Welding section

[0056] 14: Socket pressure plate

[0057] 140: Solder foot

[0058] 2: Plug Connector

[0059] 20: Fixture

[0060] 21: Through slot

[0061] 200: Action Space

[0062] 22: Floating Seat

[0063] 220: Tongue plate

[0064] 221:Substrate

[0065] 224: Terminal recess

[0066] 225: Guide post

[0067] 23: Terminal fixing slot

[0068] 24: Plug terminals

[0069] 240: Flat plate contact section

[0070] 242: Flexible connection section

[0071] 242a: First fastening part

[0072] 242b: Second locking part

[0073] 242c: Bending section

[0074] 244: Welding section

[0075] 26: Plug pressure plate

[0076] 3,4: Circuit Board

[0077] 30: Socket

[0078] 31, 32: Surface

[0079] D1, D2: Width

[0080] L1, L2: Central axis

[0081] H1, H2, H3: Vertical distance

[0082] H4, H8, H22: Height

[0083] H5: Length

[0084] Hb: Thickness

[0085] Hd: Depth

[0086] W1, W2, W3: Width

[0087] P1: Original position

[0088] P2: Shaking position

[0089] P3: Vibration location. Detailed Implementation

[0090] Please see Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 11 , Figure 1 An exploded view of a floating board-to-board connector assembly mounted on circuit boards 3 and 4 according to some embodiments is shown. Figure 2 An exploded view of a floating board-to-board connector assembly according to some embodiments is shown; Figure 6A perspective view of a socket terminal 12 according to some embodiments is shown; Figure 7 An exploded view of the plug connector 2 according to some embodiments is shown; Figure 8 A perspective view of the plug terminal 24 according to some embodiments is shown; Figure 9 A perspective view of a floating board-to-board connector assembly according to some embodiments is shown, excluding circuit boards 3 and 4; and Figure 11 Drawing basis Figure 9 The cross-sectional diagram (I) at position 11-11 is shown. Circuit boards 3 and 4 are represented by a dotted chain line. The floating seat 22 is represented by a solid line, indicating that the floating seat 22 is in its original position P1. The floating seat 22 is represented by a dashed line, indicating that the floating seat 22 is in its wobbling position P2.

[0091] Please see Figure 1 A floating board-to-board connector assembly includes a socket connector 1 and a plug connector 2. The socket connector 1 is adapted to be inserted into a socket 30 on a circuit board 3 to form a recessed structure. The socket connector 1 is adapted to electrically connect to the plug connector 2, and the plug connector 2 is adapted to be mounted on the surface of a circuit board 4.

[0092] Please see Figure 1 , Figure 2 and Figure 11 The socket connector 1 mainly includes a base 10 and a plurality of socket terminals 12. The base 10 includes an insertion part 100, which passes through the circuit board 3, meaning that the insertion part 100 extends from one surface 31 of the circuit board 3 to the other surface 32 of the circuit board 3 (see...). Figure 11 The mating space 102 of the insertion part 100 is a space extending from the interface 112 toward the top surface of the base 10 (see...). Figure 2 The tongue plate 220 of the floating seat 22 of the plug connector 2 is inserted into the base 10. Additionally, the socket terminal 12 is disposed on the base 10, and the socket terminal 12 is adapted to contact (or electrically connect) with the plug terminal 24 of the plug connector 2 in the mating space 102. Please refer to [further details omitted]. Figure 6 and Figure 11 Each socket terminal 12 includes a resilient contact section 120, an extension section 122, and a soldering section 124. The resilient contact section 120 is located in the mating space 102 and is adapted to contact the flat contact section 240 of the plug terminal 24. The extension section 122 is located on the top surface of the base 10 and bends along one of the outer surfaces 110 of the base 10. The resilient contact section 120 extends from one end of the extension section 122 to the lower opening 108 (see...). Figure 11 The welded section 124 extends from one end of the extension section 122 and protrudes outward from the outer surface 110 of the base 10 (see [reference needed]). Figure 2 ).

[0093] Additionally, please see Figure 2 and Figure 7The plug connector 2 includes a fixed base 20, a floating base 22, and a plurality of plug terminals 24. The fixed base 20 has a through slot 21 to form an actuation space 200. The floating base 22 is located in the actuation space 200 and extends a tongue plate 220. The two ends of each plug terminal 24 are respectively connected to the fixed base 20 and the floating base 22. That is, the fixed base 20 and the floating base 22 are indirectly connected through the plug terminals 24, and the fixed base 20 and the floating base 22 do not contact each other.

[0094] Specifically, please refer to the following: Figure 1 and Figure 8 The plug terminal 24 includes a flat contact section 240, a flexible connecting section 242, and a soldering section 244. The flexible connecting section 242 is located in the actuation space 200 of the fixed base 20. The flat contact section 240 extends from one end of the flexible connecting section 242 to one surface of the tongue plate 220. The soldering section 244 extends from the other end of the flexible connecting section 242 and is exposed outside the fixed base 20. This means that the flat contact section 240 is located on the surface of the floating base 22, the flexible connecting section 242 is located in the through slot 21 (actuation space 200) of the fixed base 20, and the soldering section 244 is exposed outside the fixed base 20. The two ends of the flexible connecting section 242 extend towards the flat contact section 240 and the soldering section 244, respectively. Please refer to... Figure 11 The floating seat 22 is connected to the fixed seat 20 via the elastic connecting section 242 of the plug terminal 24 to maintain the flat contact section 240 in contact with the elastic contact section 120 of the socket terminal 12. Specifically, when the plug connector 2 mates with the socket connector 1, the elastic contact section 120 of the socket terminal 12 is located in the mating space 102 and contacts the flat contact section 240 of the plug terminal 24, wherein the flat contact section 240 of the plug terminal 24 defines the contact range in which the flat contact section 240 moves vertically relative to the elastic contact section 120 of the socket terminal 12.

[0095] In this way, the socket connector 1 and the plug connector 2 are in a floating docking configuration, and the floating seat 22 of the plug connector 2 can move along multiple axes within the operating space 200 of the fixed seat 20 to absorb external forces during vibration. At the same time, it can also maintain the stability of the floating seat 22 and maintain a good electrical connection.

[0096] Please see Figure 9 , Figure 11 and Figure 12 In some embodiments, the floating seat 22 has an initial position P1 on at least one axis, and the resilient connecting segment 242 of the plug terminal 24 provides a restoring force to maintain the floating seat 22 in the initial position P1. For example, see [link to relevant documentation]. Figure 11 When the circuit board 4 or the floating seat 22 is subjected to an external force and moves along the Z-axis, the floating seat 22 moves accordingly from its original position P1 to its wobbling position P2, meaning that... Figure 11From the perspective of the fixed base 20 (operation space 200), the floating seat 22 moves closer to the right side and away from the left side. At this time, the restoring force of the elastic connecting section 242 of the plug terminal 24 can move the floating seat 22 from the wobbling position P2 back to the original position P1, so as to maintain the floating seat 22 in the original position P1. For another example, please refer to [reference needed]. Figure 11 and Figure 12 When circuit board 4 or floating seat 22 is subjected to external force and moves along the Y-axis, floating seat 22 correspondingly moves from its original position P1 (see...). Figure 11 Move towards vibration location P3 (see...) Figure 12 This means that the floating seat 22 moves closer to the socket connector 1. At this time, the restoring force of the elastic connecting segment 242 of the plug terminal 24 can move the floating seat 22 from the vibration position P3 to the original position P1, so as to maintain the floating seat 22 in the original position P1.

[0097] Therefore, the floating base 22 has a range of motion within the operating space 200, at least in the Z-axis (horizontal direction) and Y-axis (vertical direction). This maintains the stability of the floating base 22 and reduces the risk of detachment or breakage of the floating board-to-board connector assembly. Furthermore, during shaking or vibration, the flat contact section 240 of the plug terminal 24 and the elastic contact section 120 of the socket terminal 12 maintain continuous contact, ensuring a good electrical connection.

[0098] Furthermore, the structural details of the socket connector 1 and plug connector 2 in some embodiments are described below.

[0099] Please see Figure 2 and Figure 11 In some embodiments, the socket connector 1 further includes a socket pressure plate 14, and the base 10 further includes a retaining portion 104, which abuts against the surface 31 of the circuit board 3 (see [reference needed]). Figure 11 A socket pressure plate 14 is disposed on the support portion 104. The socket pressure plate 14 has solder feet 140. The solder feet 140, the soldering section 124 of the socket terminal 12, and the bottom surface 114 of the support portion 104 are located on the same horizontal plane. The solder feet 140, the soldering section 124, and the bottom surface 114 of the support portion 104 contact the surface 31 of the circuit board 3. That is, the solder feet 140, the soldering section 124, and the bottom surface 114 of the support portion 104 are at the same height on the outer side surface 110 of the base 10. The height of the outer side surface 110 is the vertical distance from the bottom surface 111 of the base 10. In some embodiments, the solder feet 140 of the socket pressure plate 14 and the solder sections 124 of the socket terminal 12 are located at the middle horizontal position of the socket connector 1 (base 10), which means that the height position of the solder feet 140 on the outer side 110 of the base 10 (i.e. the thickness of the abutment portion 104) is substantially equal to the vertical distance from the bottom surface 114 of the abutment portion 104 to the bottom surface 111 of the insertion portion 100.

[0100] Please see Figure 1 When the socket connector 1 is inserted into the socket 30 of the circuit board 3, the insertion part 100 and the supporting part 104 are respectively located on opposite sides of the circuit board 3. The supporting part 104 protrudes outward from the outer side 110 of the base 10, along... Figure 1 From an X-axis perspective, the width of the supporting portion 104 is greater than the width of the socket 30 or the width of the insertion portion 100. In some embodiments, the cross-sectional shape of the supporting portion 104 and the insertion portion 100 is T-shaped. Furthermore, since the socket terminal 12 is used for electrical connection and is easily detached or broken by external force, it does not have a structural fixing function. Therefore, the socket pressure plate 14 can strengthen the insertion structure of the socket connector 1 (base 10) onto the circuit board 3.

[0101] Therefore, the height of the soldering section 124 of the socket terminal 12 on the outer side 110 of the base 10 corresponds to the height of the entire socket connector 1 recessed onto the circuit board 3. When the socket connector 1 is inserted into the socket 30 on the circuit board 3, the soldering feet 140 of the socket pressure plate 14 and the soldering section 124 of the socket terminal 12 are located on the surface of the circuit board 3. This recessed design is easy to solder and install, and compared to a plate-type socket connector (that is, the bottom surface of the socket connector 1 is soldered to the surface of the circuit board 3), this recessed socket connector 1 can reduce the distance between the circuit board 3 and the circuit board 4 on the plug connector 2. In addition, the socket connector 1 can also be adjusted according to the installation space limitations of electronic devices by adjusting the height design of the soldering section 124 and the soldering feet 140 on the outer side 110 of the base 10, or adjusting the thickness design of the supporting part 104, to improve the installation success rate.

[0102] Please see Figure 3 , Figure 4 and Figure 5 , Figure 3 An exploded view of a socket connector 1 according to some embodiments is shown; Figure 4 Drawing basis Figure 3 A cross-sectional view at position 4-4; and Figure 5 Drawing basis Figure 3 A cross-sectional view at position 5-5.

[0103] Please see Figure 2 , Figure 3 and Figure 5 In some embodiments, the base 10 of the socket connector 1 also has two abutment portions 104, and the insertion portion 100 of the socket connector 1 has a mating interface 112 and two guide pin holes 106. The mating interface 112 is located between the two guide pin holes 106, and the center line of the mating interface 112 and the center line of the two guide pin holes 106 are aligned with the central axis L1 of the bottom surface 111 of the insertion portion 100 (see [reference needed]). Figure 2Each guide post hole 106 extends from the bottom surface 111 of the base 10 (insertion part 100) toward the top surface of the base 10. Please refer to Figure 3 and Figure 4 In some embodiments, the base 10 further includes a terminal groove 103 and a plurality of terminal channels 103b. The terminal groove 103 is located between two abutment portions 104, and has a plurality of terminal slots 103a. The terminal slots 103a are disposed on the outer surface 110 of the base 10, and the length H5 of the terminal slot 103a is less than or equal to the thickness Hb of the abutment portion 104. Additionally, the terminal channels 103b extend from the top surface of the base 10 (terminal groove 103) toward the bottom surface 111 of the base 10 (insertion portion 100), and one terminal channel 103b corresponds to one terminal slot 103a. Specifically, with... Figure 4 For example, terminal channel 103b has an upper opening section 103c, a mating section 103d, and a lower opening section 103e. The top partition wall 105 of the base 10 separates the upper opening sections 103c of the two opposing terminal channels 103b, and the two opposing mating sections 103d are connected and have a mating interface 112 to form a mating space 102 (see...). Figure 2 The lower opening segment 103e connects to the mating segment 103d, and the lower opening segment 103e has a lower opening 108. The bottom partition wall 107 of the base 10 separates the lower opening 108 from the mating interface 112. See also Figure 2 The lower openings 108 located on the bottom surface 111 of the insertion part 100 are symmetrically arranged on both sides of the interface 112 with the central axis L1 as the center line.

[0104] Please refer to the following: Figure 3 , Figure 4 and Figure 6 The following describes the structural details of a socket terminal 12 located in a corresponding terminal slot 103a and a terminal channel 103b, using some embodiments. The soldering section 124 of the socket terminal 12 protrudes from the terminal slot 103a, and an extension section 122 is located in both the terminal slot 103a and the terminal channel 103b. The extension section 122 has an outer portion 122a, a top portion 122b, and an inner portion 122c. The top portion 122b is located on the top surface of the base 10 (terminal slot portion 103), the outer portion 122a is located in the terminal slot 103a, and the inner portion 122c is located in the terminal channel 103b. The flange of the inner portion 122c engages with the mating section 103d of the terminal channel 103b. Furthermore, the resilient contact section 120 of the socket terminal 12 has a protrusion 120a and a free end 120b. The protrusion 120a is located in the mating section 103d of the terminal channel 103b, and the free end 120b is located in the lower opening section 103e.

[0105] Further, please refer to Figure 6The vertical distance H1 between the top 122b of the extension 122 and the welded section 124 (i.e., the length of the outer side 122a of the extension 122, or Figure 3 The length H5 of the terminal slot 103a is less than the vertical distance H3 between the top 122b and the free end 120b of the elastic contact section 120. The vertical distance H3 between the top 122b and the free end 120b is substantially equal to the vertical distance between the top surface of the terminal slot 103 and the bottom surface 111 of the insertion section 100 (i.e., the depth of the terminal channel 103b). Furthermore, the vertical distance H1 between the top 122b and the solder section 124 is less than the vertical distance H2 between the top 122b and the protrusion 120a. Therefore, the design of the socket connector 1 being recessed onto the circuit board 3 can be adapted by adjusting the height difference between the solder feet (solder section 124) and the electrical contact end (protrusion 120a) of the socket terminal 12.

[0106] Please see Figure 5 and Figure 11 In some embodiments, the free end 120b of the resilient contact segment 120 may selectively abut against and be away from the bottom spacer wall 107. For example, see [link to relevant documentation]. Figure 11 When the socket connector 1 mates with the plug connector 2, the floating seat 22 of the plug connector 2 will spread apart the protrusions 120a of the two opposing elastic contact sections 120, so that the free end 120b is away from the bottom partition wall 107. When the socket connector 1 and the plug connector 2 have not yet mated, the free end 120b abuts against the bottom partition wall 107.

[0107] On the other hand, please see Figure 2 and Figure 10 , Figure 10 Drawing basis Figure 9 A cross-sectional view at position 10-10 is shown in the diagram. In some embodiments, the floating seat 22 of the plug connector 2 includes a base plate 221, a tongue plate 220, and two guide posts 225. The tongue plate 220 and the guide posts 225 protrude outward from the base plate 221. The tongue plate 220 is located between the two guide posts 225. The centerline of the tongue plate 220 and the centerline of the guide posts 225 are both aligned with the central axis L2 of the base plate 221 (see...). Figure 2 The guide post 225 is adapted to be correspondingly mated with the guide post hole 106 of the socket connector 1, and the tongue plate 220 is adapted to be correspondingly mated with the mating interface 112 (matting space 102) of the socket connector 1.

[0108] In this way, since the socket connector 1 and the plug connector 2 are floating mating devices, the guiding and alignment function provided by the guide post 225 during the mating process helps the user accurately mate the tongue plate 220 into the mating interface 112 of the socket connector 1. Therefore, the floating board-to-board connector assembly has a blind mating function and can reduce the risk of damage to appearance or function caused by misalignment due to improper operation.

[0109] Please see Figure 10 In some embodiments, the height H8 of the guide post 225 of the plug connector 2 is greater than or equal to the height H22 of the tongue plate 220, the width D2 of the base of the guide post 225 is greater than the width D1 of the top of the guide post 225, and the cross-sectional shape of the base of the guide post 225 matches the opening shape of the guide post hole 106. In some embodiments, the height H8 of the guide post 225 is not lower than the height H22 of the tongue plate 220, and the guide post 225 is a column or cone-shaped column with a narrow top and a wide bottom. There is at least one guide post 225. Preferably, the number of guide posts 225 is even and they are symmetrically arranged on both sides of the tongue plate 220. Accordingly, the guiding and alignment effect of the guide posts 225 can be improved.

[0110] Additionally, please see Figure 7 and Figure 10 In some embodiments, the plug connector 2 further includes two plug pressure plates 26, which cover the substrate 221 of the fixed seat 20 and the floating seat 22. The plug pressure plates 26 are adapted to fix the fixed seat 20 to the circuit board 4. The plug pressure plates 26 can also prevent the floating seat 22 from moving too far away from the through slot 21 of the fixed seat 20 due to external force, so as to maintain the floating seat 22 at a horizontal position comparable to the fixed seat 20. However, the plug pressure plates 26 do not interfere with the horizontal movement of the floating seat 22.

[0111] Please see Figure 7 and Figure 8 The following describes the specific structure of a plug terminal 24 located between a fixed base 20 and a floating base 22, using some embodiments. The tongue plate 220 of the floating base 22 has a plurality of terminal grooves 224, and the through groove 21 of the fixed base 20 has a plurality of terminal fixing grooves 23. One terminal groove 224 corresponds to one terminal fixing groove 23. One plug terminal 24 is located in the corresponding terminal groove 224 and terminal fixing groove 23. The flat contact section 240 of the plug terminal 24 is located in the terminal groove 224. The elastic connection section 242 is located in the gap between the substrate 221 and the fixed base 20. The soldering section 244 extends outward along the bottom surface of the terminal fixing groove 23 (fixed base 20).

[0112] Specifically, please refer to Figure 8The elastic connection section 242 of the plug terminal 24 includes a first locking portion 242a, a bent portion 242c, and a second locking portion 242b. The bent portion 242c is located between the first locking portion 242a and the second locking portion 242b. The flange of the first locking portion 242a hooks the base plate 221 of the floating seat 22. The bent portion 242c extends from the first locking portion 242a along the bottom surface of the base plate 221 and bends toward the terminal fixing groove 23 (fixed seat 20). The flange of the second locking portion 242b hooks the terminal fixing groove 23. In some embodiments, the width W3 of the welding section 244 of the plug terminal 24 is smaller than the width W2 of the bent portion 242c. The width W2 of the bent portion 242c is the same as the width W1 of the flat contact section 240. The height H4 of the bent portion 242c is less than or equal to the depth Hd of the through groove 21 of the fixed seat 20 (see...). Figure 10 ).

Claims

1. A sink plate board-to-board receptacle connector adapted to be mounted on a circuit board, the sink plate board-to-board receptacle connector comprising: : A base includes: two holding portions abutting against a surface of a circuit board; and An insertion portion penetrating the circuit board, the insertion portion having a mating space; A plurality of socket terminals arranged in the base, each of the socket terminals including an elastic contact segment, an extension segment, and a soldering segment, the extension segment being located at a top surface of the base and being bent along an outer side surface of the base, the elastic contact segment being located in the mating space, the elastic contact segment extending from one end of the extension segment to a lower opening, the soldering segment extending from another end of the extension segment and protruding outwardly from the outer side surface of the base; and Two socket pressing plate members respectively arranged in the two holding portions, each of the socket pressing plate members having a soldering leg, the soldering leg, the soldering segment, and a bottom surface of each of the holding portions being located in a same horizontal plane and contacting the surface of the circuit board.

2. The board-to-board receptacle connector according to claim 1, characterized by The base further includes: A plurality of terminal grooves located between the two holding portions, the soldering segment of each of the socket terminals protruding outwardly from each of the terminal grooves; and A plurality of terminal channels, each of the terminal channels extending from the top surface of the base toward a bottom surface of the base, each of the terminal channels corresponding to each of the terminal grooves, the elastic contact segment of each of the socket terminals being located in each of the terminal channels.

3. The board-to-board receptacle connector according to claim 2, characterized by A length of each of the terminal grooves is less than a depth of each of the terminal channels, each of the terminal channels includes: A mating segment, the mating segments of two opposite terminal channels being connected and having a mating port to form the mating space; and A lower opening segment connected to the mating segment, the lower opening segment having the lower opening, the lower opening being arranged at the bottom surface of the base and being located at one side of the mating port.

4. The board-to-board receptacle connector according to claim 3, characterized by The mating segment has a bottom partition wall, the bottom partition wall separates the mating port and the lower opening, a free end of the elastic contact segment selectively abuts against the bottom partition wall and is away from the bottom partition wall.

5. The board-to-board receptacle connector according to claim 3, wherein The extension segment of each of the socket terminals has an outer side portion, a top portion, and an inner side portion, the top portion being located at the top surface of the base, the outer side portion of each of the socket terminals being located in each of the terminal grooves, the inner side portion being hooked to the mating segment of the corresponding terminal channel.

6. The board-to-board receptacle connector according to claim 5, wherein A distance between the top portion of the extension segment and the soldering segment of each of the socket terminals is less than a distance between the top portion of the extension segment and a free end of the elastic contact segment.

7. The board-to-board receptacle connector according to claim 3, wherein The elastic contact segment of each of the socket terminals has a protruding portion and a free end, the protruding portion being located in the mating segment of the terminal channel, the free end being located in the lower opening segment of the terminal channel.

8. The board-to-board receptacle connector according to claim 1, wherein Each of the holding portions protrudes outwardly from the outer side surface of the base, the insertion portion has two guide post holes, each of the guide post holes extending from a bottom surface of the base toward the top surface of the base.

9. The board-to-board receptacle connector according to claim 8, characterized by The bottom surface of the base has the mating port and the lower openings, a center line of the mating port and a center line of the two guide post holes are aligned with a central axis of the insertion portion, the mating port is located between the two guide post holes, a number of the lower openings is a plurality, each of the lower openings is symmetrically arranged at two sides of the mating port.

10. The board-to-board receptacle connector according to claim 1, wherein A thickness of each of the abutment portions is substantially equal to a vertical distance from the bottom surface of each of the abutment portions to a bottom surface of the base.

Images