Board-to-board connector assembly

Abstract

The utility model discloses a board-to-board connector assembly, which comprises a female seat connector and a male seat connector which are matched with each other, the female seat connector comprises a first seat body and a first shielding shell coated on the periphery of the first seat body, and the male seat connector comprises a second seat body and a second shielding shell coated on the periphery of the second seat body. The female seat connector and the male seat connector respectively comprise a bolt and a nut, and the female seat connector and the male seat connector are locked together through the connection of the bolt and the nut. The nut is provided with a bottom plate and a cylinder extending upwards from the bottom plate, the cylinder is fixedly held in the first seat body or the second seat body, the bottom plate is attached to the bottom surface of the corresponding first seat body or the second seat body and is overlapped with the corresponding first shielding shell or the second shielding shell in the vertical direction, and meanwhile, the bottom plate is fixed on the bottom surface of the first shielding shell or the second shielding shell in the vertical direction. Correspondingly, the first shielding shell or the second shielding shell abuts against the upper surface of the bottom plate, so that the nut cannot be pulled out of the plate when the bolt is tightened.

Description

TECHNICAL FIELD

[0001] The utility model relates to a board-to-board connector assembly, in particular to a board-to-board connector assembly with self-locking structure. BACKGROUND

[0002] The board-to-board connector is the connector product with the strongest transmission capacity among all connector product types, and is mainly applied to the power system, communication network, financial manufacturing, elevator, industrial automation, medical equipment, office equipment, home appliance, military manufacturing and other industries.

[0003] The male seat connector and the female seat connector are mainly fixed by elastic extrusion force, and any slight external force or vibration may cause the connection to be loose, thereby affecting the stability of the electric signal. Therefore, the existing board-to-board connector still adopts the self-locking structure with the bolt and the nut added on the male seat connector and the female seat connector to realize the stable and reliable connection between the two. However, the existing board-to-board connector does not design the pressing nut structure, and the plastic strength at the position of the nut is not enough, so it is difficult to press the nut. When the bolt is tightened, the nut is pulled out of the plastic body and separated from the circuit board, thereby causing the self-locking failure.

[0004] Therefore, it is hoped to provide a new board-to-board connector assembly to overcome the above defects. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a board-to-board connector assembly with self-locking structure, and the nut will not be pulled out of the board when the bolt is tightened.

[0006] To achieve the above object, the utility model discloses the following technical scheme: a board-to-board connector assembly, including mutually coordinated female seat connector and male seat connector, the female seat connector includes the first seat body of length, hold on the first seat body on several first terminals and the first shielding casing of the outer periphery of the first seat body, the male seat connector includes the second seat body of length, hold on the second seat body on several second terminals and the second shielding casing of the outer periphery of the second seat body. One of the female seat connector and the male seat connector includes bolt and the other includes nut, and the female seat connector and the male seat connector are locked together through the connection of the bolt and the nut. The nut is equipped with bottom plate and the cylinder that extends from the bottom plate upwards, and the cylinder is held in the first seat body or the second seat body, and the bottom plate is attached to the bottom surface of the first seat body or the second seat body and overlaps the first shielding casing or the second shielding casing in the vertical direction, and the first shielding casing or the second shielding casing abuts the upper surface of the bottom plate.

[0007] In the preferred implementation, the female seat connector includes two bolts, and the first shielding casing is provided with two clearance holes located on the longitudinal sides of the first seat body; the male seat connector includes two nuts, and the second seat body is provided with two second side walls and two second end walls connected to the longitudinal ends of the two second side walls, the nut is held on the second end wall, and the bolt is locked with the nut after passing through the clearance hole.

[0008] In the preferred implementation, the second shielding casing includes a second frame body drawn and formed, the second frame body is provided with four second side walls connected head to tail, two third side walls in C shape and a C-shaped top wall connected to the top of the second side wall and the third side wall, the third side wall and the top wall are located at the longitudinal ends of the second shielding casing, the third side wall is located inside the second side wall and embedded in the second end wall, and the third side wall abuts the upper surface of the bottom plate of the nut.

[0009] In the preferred implementation, the first seat body is provided with two first side walls, two first insertion grooves and a central island portion between the two first insertion grooves, and each first insertion groove is located between the corresponding first side wall and the central island portion; when the female seat connector and the male seat connector are matched, the second side wall is inserted into the first insertion groove, and the second end wall is located on the longitudinal sides of the first seat body.

[0010] In a preferred embodiment, the first shielding shell comprises a first frame body which comprises four first side walls connected end to end and seamlessly connected, a first bottom wall which is bent and extends inwardly from a bottom edge of the first side wall, and two first shielding portions which are upwardly drawn from inner edges of the first bottom wall, the first bottom wall surrounds the outer periphery of the first seat body, and the first shielding portions cover the longitudinal ends of the central island portion, the accommodation holes are located on the longitudinal outer side of the first shielding portions and vertically penetrate the first bottom wall.

[0011] In a preferred embodiment, the male seat connector comprises two bolts, the second shielding shell is provided with two accommodation holes located on the longitudinal sides of the second seat body; the female seat connector comprises two nuts, the first seat body is provided with two first side walls and two first end walls connected to the longitudinal ends of the two first side walls, the nuts are held on the first end walls, and the bolts are locked with the nuts after penetrating the accommodation holes.

[0012] In a preferred embodiment, the first shielding shell comprises a first frame body which comprises four first side walls connected end to end and seamlessly connected, a first bottom wall which is bent and extends inwardly from a bottom edge of the first side wall, and two first shielding portions which are upwardly drawn from inner edges of the first bottom wall, the first bottom wall surrounds the outer periphery of the first seat body, and the first shielding portions cover the longitudinal ends of the central island portion, the accommodation holes are located on the longitudinal outer side of the first shielding portions and vertically penetrate the first bottom wall.

[0013] In a preferred embodiment, the first frame body further comprises a bent portion which is bent and extends downwardly from an inner edge of the first shielding portion, the bent portion is embedded in the first end wall and abuts against the upper surface of the bottom plate of the nut.

[0014] In a preferred embodiment, the second seat body is provided with two second side walls and two second end walls connected to the longitudinal ends of the two second side walls, and the second shielding shell comprises a second frame body which is drawn and comprises four second side walls connected end to end, two third side walls in C shape, a C-shaped top wall connected to the top of the second side wall and the third side wall, and a second bottom wall which extends inwardly from the bottom edge of the third side wall, the third side wall, the top wall and the second bottom wall are located on the longitudinal ends of the second seat body, and the accommodation holes vertically penetrate the second bottom wall.

[0015] In a preferred embodiment, the second seat body is provided with a recess hole on the second end wall, the second frame body is provided with two second shielding parts drawn and formed upward from the inner side edge of the second bottom wall and a second bending part bent and extended downward from the inner edge of the second shielding part, the second shielding part covers the longitudinal two ends of the second end wall, and the second bending part is embedded in the recess hole of the second end wall.

[0016] Compared with the prior art, the nut is provided with a bottom plate and a cylinder extending upward from the bottom plate, the cylinder is held in the corresponding first seat body or second seat body, the bottom plate is attached to the bottom surface of the corresponding first seat body or second seat body and overlaps the corresponding first shielding shell or second shielding shell in the vertical direction, and meanwhile, the corresponding first shielding shell or second shielding shell abuts against the upper surface of the bottom plate. The bolt and the nut form a self-locking structure, so that the female seat connector and the male seat connector have stable and reliable connection, thereby guaranteeing the stability of the electrical signal; and the first shielding shell or the second shielding shell abuts against the upper surface of the bottom plate of the nut, so that when the bolt is tightened, the nut cannot be pulled off the plate due to the pressing of the first shielding shell or the second shielding shell on the nut. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective view of a board-to-board connector assembly in the first embodiment of the utility model.

[0018] Figure 2 is Figure 1 a perspective view of a female seat connector in the board-to-board connector assembly shown in the figure.

[0019] Figure 3 is Figure 2 an exploded view of the female seat connector shown in the figure.

[0020] Figure 4 is Figure 1 an exploded view of a male seat connector in the board-to-board connector assembly shown in the figure.

[0021] Figure 5 is Figure 1 a perspective view of the male seat connector in the board-to-board connector assembly shown in the figure from another angle.

[0022] Figure 6 is Figure 5 an exploded view of the male seat connector shown in the figure.

[0023] Figure 7 is Figure 1 a sectional view of the board-to-board connector assembly shown in the figure.

[0024] Figure 8is the stereogram of the board-to-board connector assembly of the second embodiment of the utility model.

[0025] Figure 9 is Figure 8 the exploded view of the female seat connector in the board-to-board connector assembly shown in the figure.

[0026] Figure 10 is Figure 8 the stereogram of the female seat connector in the board-to-board connector assembly shown in the figure.

[0027] Figure 11 is Figure 10 the exploded view of the female seat connector shown in the figure.

[0028] Figure 12 is Figure 8 the stereogram of the male seat connector in the board-to-board connector assembly shown in the figure.

[0029] Figure 13 is Figure 12 the exploded view of the male seat connector shown in the figure.

[0030] Figure 14 is Figure 8 the sectional view of the board-to-board connector assembly shown in the figure. DETAILED DESCRIPTION

[0031] Please refer to Figures 1 to 7 the first embodiment of the utility model discloses a kind of board-to-board connector assemblies, it includes mutually matched female seat connector 100 and male seat connector 200, the female seat connector 100 is installed on the first circuit board, the first circuit board is soft board (i.e. flexible printed circuit board), the male seat connector 200 is installed on the second circuit board, and the second circuit board is hard board (i.e. rigid printed circuit board), the first circuit board is provided with two through holes spaced apart longitudinally.

[0032] Please refer to Figures 2 to 3 , the female seat connector 100 includes long first seat body 10, two rows of first terminal 20, first shielding shell 30 and two bolts 40.The first terminal 20 is held on the first seat body 10, and the first shielding shell 30 is wrapped on the outer periphery of the first seat body 10, and the two bolts 40 are respectively arranged on the first shielding shell 30, to be locked together with the male seat connector 200.Simultaneously, the bolt 40 is provided with head 41 and screw rod 42, the outer diameter of the head 41 is greater than the inner diameter of the through hole of the first circuit board, i.e. the head 41 is abutted on the first circuit board, and the screw rod 42 is used to lock with the male seat connector 200.

[0033] The first seat body 10 comprises two first side walls 11, two first slots 12 and a central island 13 between the two first slots 12, the first side walls 11, the first slots 12 and the central island 13 respectively extend along the longitudinal direction and are parallel to each other, and each first slot 12 is located between the corresponding first side wall 11 and the central island 13. The central island 13 is provided with a recess 130 at the longitudinal ends.

[0034] The first terminal 20 comprises a first fixed part, a first contact part in the shape of a U, and a first soldering leg extending outward from one end of the first fixed part, and the other end of the first fixed part is connected with the first contact part. The first fixed part is fixed with the first seat body 10, the first contact part is exposed in the first slot 12, and the first soldering leg is exposed on the bottom surface of the first seat body 10 for soldering on the first circuit board.

[0035] The first shielding shell 30 extends along the longitudinal direction and comprises a secondarily drawn first frame 31, the four sides of the first frame 31 are closed and hollowed in the upper and lower directions. The first frame 31 is provided with four first side walls 311 connected in head-to-tail and seamless, a first bottom wall 312 extending inward from the bottom edge of the first side wall 311, and two first shielding parts 313 formed by upward drawing from the inner edge of the first bottom wall 312. The first frame 31 is arranged outside the first seat body 10 and the first terminal 20, that is, the first bottom wall 312 is arranged outside the periphery of the first seat body 10.

[0036] The first bottom wall 312 is arranged horizontally and is provided with a hollow part 314 penetrating the first bottom wall 312 in the vertical direction and two accommodating holes 315, in the longitudinal direction of the first shielding shell 30, the first shielding part and the hollow part 314 are located between the two accommodating holes 315, that is, the two accommodating holes 315 are located on the longitudinal sides of the first seat body 10 and the first shielding part 313. The first shielding part 313 is symmetrically arranged at the longitudinal ends of the hollow part 314 and covers the longitudinal ends of the central island 13. The first frame 31 further comprises a bending part 316 extending downward from the inner edge of each first shielding part 313 and two hooks 317 extending upward from the inner edge of the first bottom wall 312, and the hooks 317 are located on the transverse sides of the first shielding part 313. At the same time, the seamless first frame 31 or the first bottom wall 312 connected therewith can achieve better shielding effect on the first terminal 20, preventing the transmission data from being disturbed.

[0037] The first seat body 10 is fixed in the first frame body 31 and extends into the hollow part 314. The first bottom wall 312 and the first shielding part 313 jointly clamp and fix the first seat body 10 in the longitudinal and transverse directions. The first side wall 311 and the first bottom wall 312 respectively surround the first seat body 10 by 360 degrees. A plug-in space (not labeled) is formed between the first side wall 311, the first bottom wall 312 and the first seat body 10. The plug-in space is a rectangular channel. The first welding leg of the first terminal 20 is located in the hollow part 314. The bent part 316 is downwardly inserted and fixed in the recess hole 130 of the first seat body 10. The hook 317 is clamped to the bottom surface of the first seat body 10, thereby preventing the first seat body 10 from moving up and down relative to the first shielding shell 30.

[0038] Please refer to Figures 4 to 6 As shown in the drawings, the male seat connector 200 includes a second seat body 60, a plurality of second terminals 70 held on the second seat body 60, a second shielding shell 80 covering the outer periphery of the second seat body 60, and two nuts 90 held on the longitudinal two ends of the second seat body 60.

[0039] The second seat body 60 is provided with two second side walls 61, two second end walls 62 connected to the longitudinal two ends of the two second side walls 61, and a second insertion slot 63 located between the two second side walls 61 and the two second end walls 62. The second side walls 61 and the second insertion slot 63 respectively extend in the longitudinal direction. The transverse width of the second end wall 62 is greater than the sum of the transverse widths of the two second side walls 61 and the second insertion slot 63, that is, the transverse ends of the second end wall 62 extend beyond the corresponding second side wall 61.

[0040] The second terminals 70 are arranged in two rows and arranged on the second side wall 61. Each second terminal 70 is provided with a second contact part in the shape of an inverted U and a second welding leg extending outwardly from one end of the second contact part. The second contact part is arranged across the second side wall 61 of the second seat body 60 and exposed in the second insertion slot 63.

[0041] In this embodiment, the second shielding shell 80 includes a second frame body 81 which is drawn and formed seamlessly. The second frame body 81 surrounds the second seat body 60 and the second terminal 70 and is inserted into the first shielding shell 30. The second frame body 81 includes four second side walls 811 connected head to tail, two third side walls 812 in the shape of C, and a C-shaped top wall 813 connected to the top of the second side wall 811 and the third side wall 812. The third side wall 812 and the top wall 813 are located at the longitudinal two ends of the second shielding shell 80.

[0042] The second housing 60 is fixed in the second frame 81, the second sidewall 811 surrounds the second housing 60 by 360 degrees, the third sidewall 812 is located inside the second sidewall 811 and is embedded in the second end wall 62 of the second housing 60, and the top wall 813 covers part of the top surface of the second end wall 62. A plurality of elastic pieces 815 are arranged on the second sidewall 811 in a spaced manner, each of the elastic pieces 815 protrudes outward, which facilitates closer cooperation with the female connector 100.

[0043] The nut 90 is formed by drawing and stretching and is fixed on the second end wall 62. The nut 90 includes a bottom plate 91 and a cylinder 92 extending upward from the bottom plate 91, the cylinder 92 is fixed in the second end wall 62 of the second housing 60 and partially protrudes upward from the second end wall 62 to extend into the accommodation hole 315 of the female connector 100. The bottom plate 91 is accommodated in the recess 621 of the bottom surface of the second end wall 62 and is attached to the bottom surface of the second housing 60 to be welded to the second circuit board. The cylinder 92 is also provided with a threaded hole 93 for locking with the bolt 40; the bottom plate 91 overlaps the second shielding shell 80 in the vertical direction, and the third sidewall 812 of the second shielding shell 80 abuts against the upper surface of the bottom plate 91 of the nut 90. When the bolt 40 is tightened, the nut 90 will not be pulled off by the second shielding shell 80.

[0044] In combination Figure 7 As shown, when the female connector 100 cooperates with the male connector 200, the central island 13 of the first housing 10 is inserted into the second slot 63 of the second housing 60, the second sidewall 61 of the second housing 60 is inserted into the first slot 12 of the first housing 10, the second end wall 62 is located on the longitudinal sides of the first housing 10, the first contact part of the first terminal 20 and the second contact part of the second terminal 70 correspondingly electrically contact, the second sidewall 811 of the second shielding shell 80 is inserted into the insertion space of the female connector 100, and each of the elastic pieces 815 elastically abuts against the inner surface of the first sidewall 311 to achieve electrical connection between the first shielding shell 30 and the second shielding shell 80. At the same time, the cylinder 92 of the nut 90 extends into the accommodation hole 315, the shank 42 of the bolt 40 passes through the through hole of the first circuit board and the accommodation hole 315 of the female connector 100 and is locked with the nut 90, and the bolt 40 and the nut 90 form a self-locking structure, so that the male connector 200 is clamped between the female connector 100 and the second circuit board. Only when the nut 90 and the bolt 40 are separated, the female connector 100 and the male connector 200 can be separated, thereby ensuring the stability of the electrical signal.

[0045] Please refer to Figures 8 to 14As shown in the second embodiment of the utility model discloses a board-to-board connector assembly, it includes the female seat connector 100A with male seat connector 200A can cooperate, female seat connector 100A installs on the first circuit board, the first circuit board is hard board (i.e. rigid printed circuit board), male seat connector 200A installs on the second circuit board, the second circuit board is soft board (i.e. flexible printed circuit board), the second circuit board is equipped with two through holes spaced apart longitudinally.

[0046] Please refer to Figures 9 to 11 As shown in the female seat connector 100A includes the first seat body 10A of length, two rows of first terminal 20, first shielding shell 30A and two nuts 90, the first terminal 20 is held on the first seat body 10A, the first shielding shell 30A is wrapped on the outer periphery of the first seat body 10A, and two nuts 90 are held on the longitudinal two ends of the first seat body 10A.

[0047] The first seat body 10A includes two first side walls 11A, two first slots 12A, a central island portion 13A between the two first slots 12A, and two first end walls 14 connected to the longitudinal two ends of the two first side walls 11A, the first side wall 11A, the first slot 12A and the central island portion 13A extend longitudinally and are parallel to each other, and each first slot 12A is located between the corresponding first side wall 11A and the central island portion 13A.

[0048] The first terminal 20 includes a first fixed portion, a first contact portion in the shape of a U, and a first soldering leg extending outwardly from one end of the first fixed portion, the other end of the first fixed portion being connected to the first contact portion. The first fixed portion is fixed to the first seat body 10A, the first contact portion is exposed in the first slot 12A, and the first soldering leg is exposed on the bottom surface of the first seat body 10A for soldering to the first circuit board.

[0049] The first shielding shell 30A extends longitudinally and includes a first frame 31A formed by secondary drawing, the four sides of the first frame 31A are closed and hollow from top to bottom. The first frame 31A is provided with four first side walls 311 connected head to tail and seamlessly connected, a first bottom wall 312A extending inwardly from the bottom edge of the first side wall 311, and two first shielding portions 313A formed by drawing upwardly from the inner edge of the first bottom wall 312A. The first frame 31A is arranged outside the first seat body 10A and the first terminal 20, i.e. the first bottom wall 312A is arranged outside the outer periphery of the first seat body 10A.

[0050] The first bottom wall 312A is horizontally arranged and provided with a hollow portion 314A vertically penetrating the first bottom wall 312A. The first shielding portions 313A are longitudinally symmetrically arranged at the longitudinal ends of the hollow portion 314A and cover the longitudinal ends of the first end wall 14. The first frame 31A further comprises a bending portion 316A extending downward from the inner edge of each first shielding portion 313A, which is embedded in the first end wall 14. At the same time, the seamless first frame 31A or the first bottom wall 312A connected thereto can achieve better shielding effect on the first terminal 20, preventing the transmission data from being disturbed.

[0051] The first seat body 10A is fixed in the first frame 31A and extends into the hollow portion 314A, and the first bottom wall 312A and the first shielding portion 313A jointly clamp and fix the first seat body 10A in the longitudinal and transverse directions. The first side wall 311 and the first bottom wall 312A surround the first seat body 10A by 360 degrees, respectively. A plug-in space (not labeled) is formed between the first side wall 311, the first bottom wall 312A and the first seat body 10A, which is a rectangular channel, and the first soldering leg of the first terminal 20 is located in the hollow portion 314A. The bending portion 316A is downwardly inserted and fixed in the first seat body 10A, thereby preventing the first seat body 10A from moving up and down relative to the first shielding shell 30A.

[0052] The nut 90 is stretch-formed by drawing and is held on the first end wall 14. The nut 90 comprises a bottom plate 91 and a cylinder 92 extending upward from the bottom plate 91. The cylinder 92 is held in the first end wall 14 of the first seat body 10A and partially protrudes upward from the first end wall 14 to extend into the accommodation hole 818 of the male seat connector 200A. The bottom plate 91 is accommodated in the recess 141 of the bottom surface of the first end wall 14 and is attached to the bottom surface of the first seat body 10A for welding to the first circuit board. The cylinder 92 is further provided with a threaded hole 93 for locking with the bolt 40; the bottom plate 91 overlaps the first shielding shell 30A in the vertical direction, and the bending portion 316A of the first shielding shell 30A abuts against the upper surface of the bottom plate 91 of the nut 90. When the bolt 40 is tightened, the nut 90 will not be pulled off by the first shielding shell 30A pressing the nut 90.

[0053] Please refer to Figures 12 to 13As shown, the male connector 200A includes a second housing 60A, a plurality of second terminals 70 held on the second housing 60A, a second shielding shell 80A covering the outer periphery of the second housing 60A, and two bolts 40. The two bolts 40 are respectively arranged on the second shielding shell 80A, and are used to lock the female connector 100A together. Meanwhile, the bolt 40 is provided with a head 41 and a screw rod 42, the outer diameter of the head 41 is greater than the inner diameter of the through hole of the second circuit board, that is, the head 41 abuts against the second circuit board, and the screw rod 42 is used to lock the female connector 100A.

[0054] The second housing 60A is provided with two second side walls 61A, two second end walls 62A connected to the longitudinal ends of the two second side walls 61A, and a second slot 63A located between the two second side walls 61A and the two second end walls 62A. The second side wall 61A and the second slot 63A respectively extend along the longitudinal direction. The second housing 60A is provided with a recess 620 located on the second end wall 62A.

[0055] The second terminal 70 is arranged in two rows and arranged on the second side wall 61A. Each second terminal 70 is provided with a second contact portion in the shape of an inverted U and a second soldering leg extending outward from one end of the second contact portion. The second contact portion is arranged on the second side wall 61A of the second housing 60A and exposed in the second slot 63A.

[0056] In the present embodiment, the second shielding shell 80A includes a second frame 81A formed by three times of drawing and connected seamlessly. The second frame 81A surrounds the second housing 60A and the second terminal 70 and is inserted into the first shielding shell 30A. The second frame 81A includes four second side walls 811 connected head to tail, two third side walls 812 in the shape of C, a C-shaped top wall 813 connected to the top of the second side wall 811 and the third side wall 812, and a second bottom wall 814 extending inward from the bottom edge of the third side wall 812. The third side wall 812, the top wall 813 and the second bottom wall 814 are located at the longitudinal ends of the second shielding shell 80A. The second housing 60A is fixed in the second frame 81A, the second side wall 811 surrounds the second housing 60A by 360 degrees, and the third side wall 812 is located on the inner side of the second side wall 811. The second side wall 811 is provided with a plurality of elastic sheets 815 arranged at intervals, each of which protrudes outward, so as to be more closely matched with the female connector 100A.

[0057] The second frame body 81A is further provided with two second shielding portions 816 drawn and formed upward from the inner side edges of the second bottom wall 814, second bending portions 817 bent downward from the inner edges of the second shielding portions 816, and two accommodation holes 818 vertically penetrating the second bottom wall 814. The second shielding portions 816 cover the longitudinal two ends of the second end wall 62A, and the second bending portions 817 are embedded in the recessed holes 620 of the second end wall 62A, thereby preventing the second seat body 60A from moving up and down relative to the second shielding shell 80A. The two accommodation holes 818 are located on the longitudinal two sides of the second seat body 60A and the second shielding portion 816.

[0058] In combination Figure 14 As shown, when the female seat connector 100A is matched with the male seat connector 200A, the central island portion 13A of the first seat body 10A is inserted into the second slot 63A of the second seat body 60A, the second side wall 61A of the second seat body 60A is inserted into the first slot 12A of the first seat body 10A, the first contact portion of the first terminal 20 and the second contact portion of the second terminal 70 are electrically contacted, the second side wall 811 of the second shielding shell 80A is inserted into the insertion space of the female seat connector 100A, and each elastic sheet 815 is elastically pressed against the inner side surface of the first side wall 311, so as to realize the electrical connection between the first shielding shell 30A and the second shielding shell 80A. At the same time, the cylinder 92 of the nut 90 extends into the accommodation hole 818, the screw rod 42 of the bolt 40 passes through the through hole of the second circuit board and the accommodation hole 818 of the male seat connector 200A and is locked with the nut 90, and the bolt 40 and the nut 90 form a self-locking structure, so that the female seat connector 100 is clamped between the male seat connector 200 and the first circuit board. Only when the nut 90 and the bolt 40 are separated, the female seat connector 100A and the male seat connector 200A can be separated, thereby ensuring the stability of the electrical signal.

[0059] In the utility model, the nut 90 is provided with a bottom plate 91 and a cylinder 92 extending upward from the bottom plate 91, the cylinder 92 is held in the corresponding first seat body 10A or second seat body 60, the bottom plate 92 is attached to the bottom surface of the corresponding first seat body 10A or second seat body 60 and vertically overlaps the corresponding first shielding shell 30A or second shielding shell 80, and the corresponding first shielding shell 30A or second shielding shell 80 abuts against the upper surface of the bottom plate 92. The bolt 40 and the nut 90 form a self-locking structure, so that the female seat connector 100 and the male seat connector 200 have stable and reliable connection, thereby ensuring the stability of the electrical signal. Furthermore, the first shielding shell 30A or second shielding shell 80 abuts against the upper surface of the bottom plate 92 of the nut 90, so that when the bolt 40 is tightened, the nut 90 is not pulled off the plate due to the pressing of the first shielding shell 30A or second shielding shell 80.

[0060] To sum up, the above is only the preferred embodiment of the present application, should not be limited by the scope of the present application, namely, all the simple equivalent changes and modifications made in accordance with the claims and the content of the specification of the present application, should still belong to the scope of the present application.

Claims

1. A board-to-board connector assembly comprising a female housing connector and a male housing connector which are mated to each other, the female housing connector comprising a first housing body elongated in a longitudinal direction, a plurality of first terminals held to the first housing body, a first shield case covering an outer periphery of the first housing body, and two nuts, the male housing connector comprising a second housing body elongated in the longitudinal direction, a plurality of second terminals held to the second housing body, a second shield case covering an outer periphery of the second housing body, and two bolts, the female housing connector and the male housing connector being locked together by connection of the bolts and the nuts; characterized in that: The nut is provided with a bottom plate and a cylinder extending upward from the bottom plate, the cylinder is held in the first seat body, the bottom plate is attached to the bottom surface of the first seat body and overlaps the first shielding shell in the vertical direction, meanwhile, the first shielding shell abuts against the upper surface of the bottom plate, when the bolt is tightened, the first shielding shell presses the nut, so that the nut cannot be pulled off the plate; the first seat body is provided with two first side walls and two first end walls connected to the longitudinal ends of the two first side walls, the nut is held on the first end wall, the first shielding shell includes a first frame body drawn and formed, the first frame body includes four first side walls connected head to tail and seamlessly connected, a first bottom wall bent and extending inward from the bottom edge of the first side wall, two first shielding parts drawn and formed upward from the inner edge of the first bottom wall, and a bent part bent and extending downward from the inner edge of the first shielding part, the first bottom wall is perimetrically arranged on the first seat body, the first shielding part is wrapped on the longitudinal ends of the first end wall, and the bent part is embedded in the first end wall and abuts against the upper surface of the bottom plate of the nut.

2. The board-to-board connector assembly according to claim 1, wherein: The second shielding shell is provided with two accommodation holes located on the longitudinal sides of the second seat body; the bolt is locked with the nut after passing through the accommodation hole.

3. The board-to-board connector assembly of claim 2, wherein: The second seat body is provided with two second side walls and two second end walls connected to the longitudinal ends of the two second side walls, the second shielding shell includes a second frame body drawn and formed, the second frame body is provided with four second side walls connected head to tail, two third side walls in C shape, a C-shaped top wall connected to the top of the second side wall and the third side wall, and a second bottom wall extending inward from the bottom edge of the third side wall, the third side wall, the top wall and the second bottom wall are located at the longitudinal ends of the second seat body, and the accommodation hole penetrates the second bottom wall in the vertical direction.

4. The board-to-board connector assembly according to claim 3, wherein: The second seat body is provided with a recess hole on the second end wall, the second frame body is provided with two second shielding parts drawn and formed upward from the inner edge of the second bottom wall, and a second bent part bent and extending downward from the inner edge of the second shielding part, the second shielding part is wrapped on the longitudinal ends of the second end wall, and the second bent part is embedded in the recess hole of the second end wall.

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