Board-to-board connector assembly

Abstract

The utility model relates to electrical field discloses a kind of board-to-board connector assemblies, including male connector and female connector, shielding sheet is inserted on the male connector, the shielding sheet has protruding contact portion;Shielding terminal is inserted on the female connector, the shielding terminal has first elastic resistance contact portion for elastically resisting contact portion, first elastic resistance contact portion is protruded with first resistance portion for resisting contact portion when first elastic resistance contact portion is resisted in contact portion. By setting first elastic resistance contact portion on shielding terminal, contact portion is first elastically resisted in contact portion after male connector is inserted in female connector, so that the basic limiting effect of contact portion is realized;First resistance portion is set on first elastic resistance contact portion, so that contact portion is further hard extrusion to contact portion under the elastic extrusion of first elastic resistance contact portion, so as to increase extrusion degree, improve firmness.

Description

Technical Field

[0001] This utility model relates to the electrical field, and in particular to a board-to-board connector assembly. Background Technology

[0002] Electrical connectors are widely used in electronics, electrical appliances, and instrumentation. Their function is to act as a bridge connecting interrupted circuits or independent circuits, undertaking the task of current or signal transmission; or they can be used in conjunction with electrical terminals to form board-to-wire connections; or they can be used independently for board-to-board connections. Electrical connectors are widely used in various fields, such as automobiles and electric vehicles, to connect various electrical components. Among them, the BTB connector (Board-to-Board Connector), as a type of electrical connector, is an electronic component used to directly connect a printed circuit board (PCB) to another PCB. It achieves a stable electrical and mechanical connection between boards through precisely arranged pins and sockets, supports high-speed signal transmission, high current carrying capacity, and high-density layout capabilities, and is widely used in electronic devices such as smartphones, tablets, communication equipment, and industrial control systems that require multi-board collaboration within a compact space. Electrical connector assemblies mainly consist of male and female connectors, which achieve circuit conduction through mating.

[0003] In existing board-to-board electrical connector assemblies, most conductive terminals are arranged in two or more rows. To avoid electromagnetic interference between rows of conductive terminals, shielding components are placed between adjacent rows of conductive terminals. This provides electromagnetic shielding and prevents radio frequency interference, while also preventing internal signals from radiating outwards. Therefore, both male and female connectors have shielding components. However, the shielding components of male and female connectors are usually only mated together, resulting in poor bonding strength and low mating stability, making them prone to loosening. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a board-to-board connector assembly to solve the problem of loose mating between the shields of the existing male and female connectors.

[0005] To solve the above-mentioned technical problems, the present invention provides a board-to-board connector assembly including a male connector and a female connector. A shielding plate is inserted on the male connector, and the shielding plate has a protruding contact portion. A shielding terminal is inserted on the female connector, and the shielding terminal has a first elastic abutment portion for elastically abutting against the contact portion. A first tightening portion is protruding on the first elastic abutment portion for tightening the contact portion when the first elastic abutment portion abuts against the contact portion.

[0006] Furthermore, the male connector has a third insertion cavity, and the shielding plate is inserted into the third insertion cavity along the insertion direction, so that the contact portion is exposed outside the male connector along the insertion direction; a second blocking portion is provided in the third insertion cavity, which is used to block the shielding plate from continuing to move when the shielding plate is inserted into the third insertion cavity.

[0007] Furthermore, the shielding sheet has plug-in ends extending on both sides toward the third insertion cavity, and the third insertion cavity has plug-in grooves corresponding to the plug-in ends. The two plug-in ends are respectively engaged and locked with the plug-in grooves, and there are inclined guide surfaces on the inner sides of the two plug-in grooves.

[0008] Furthermore, the first elastic abutment portion is provided as two and symmetrically abuts against the opposite sides of the contact portion, and at least one of the elastic abutment portions has the first pressing portion.

[0009] Furthermore, the female connector has a first insertion cavity, and the shielding terminal is inserted into the first insertion cavity along a insertion direction and protrudes outward from the female connector along the insertion direction; a first blocking part is protruding in the first insertion cavity, which is used to block the shielding terminal from continuing to move when it is inserted into the first insertion cavity; the first insertion cavity includes a first cavity segment penetrating one side of the female connector and a second cavity segment penetrating both sides of the female connector, the shielding terminal includes a first external segment for insertion into the first cavity segment and a first mating segment for insertion into the second cavity segment, the first elastic abutment is formed on the first mating segment, and the first blocking part is located in the second cavity segment.

[0010] Furthermore, the female connector also includes a first plastic housing having a mating cavity, a first insertion cavity and a second insertion cavity, a first shielding shell sleeved on the first plastic housing, and a first conductive terminal inserted into the second insertion cavity and having a second elastic contact portion. The mating cavity communicates with the second insertion cavity so that the second elastic contact portion of the first conductive terminal extends into the mating cavity.

[0011] Furthermore, the first plastic shell includes a peripheral portion, an inner portion located inside and spaced apart from the peripheral portion, and a bottom portion connected to the peripheral portion and the inner portion, wherein the interlocking cavity is formed between the peripheral portion, the inner portion and the bottom portion; the first interlocking cavity is formed on the inner portion; and the second interlocking cavity is formed together on the peripheral portion, the inner portion and the bottom portion.

[0012] Furthermore, the first shielding shell has an outer edge portion surrounding the outer side wall of the outer periphery and an inner edge portion extending into the interlocking cavity and surrounding the inner side wall of the outer periphery; an outer groove is provided on the outer side wall of the outer periphery for the outer edge portion to extend into, and a first fastening portion for abutting against the outer groove is provided on at least one side of the outer edge portion.

[0013] Furthermore, the inner edge is provided with a second abutting part for abutting the male connector when the male connector is inserted into the mating cavity, and a first slot is provided on the male connector for the second abutting part to be engaged therein.

[0014] Furthermore, the male connector also includes a second plastic housing with a fourth insertion cavity, a second shielding shell sleeved on the second plastic housing, and a second conductive terminal inserted into the fourth insertion cavity. The shielding shell is inserted into the second plastic housing. The second plastic housing includes a top portion and a hollow inner portion connected to the top portion and adapted to the insertion cavity for insertion therein. The third insertion cavity communicates with the inner cavity of the insertion portion. The fourth insertion cavity is formed on the insertion portion and makes the second conductive terminal visible when inserted therein. A third abutting portion protrudes from the second elastic contact portion, and a second slot is formed on the second conductive terminal for the third abutting portion to be engaged therein.

[0015] The board-to-board connector assembly of this utility model has at least the following beneficial effects: by providing a first elastic abutment on the shielding terminal, the contact portion is elastically held against the contact portion after the male connector is inserted into the female connector, thereby achieving a basic limiting effect on the contact portion; a first pressing portion is provided on the first elastic abutment, so that the contact portion is further hard-pressed under the elastic compression of the first elastic abutment, thereby increasing the compression force and improving the firmness. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the connector assembly of this utility model; Figure 2 This is a front sectional view of the connector assembly of this utility model; Figure 3 This is a side sectional view of the connector assembly of this utility model; Figure 4 This is a schematic diagram of the structure of the female connector of this utility model; Figure 5 This is a front sectional view of the female connector of this utility model; Figure 6 This is a side sectional view of the female connector of this utility model; Figure 7 This is an exploded view of the female connector of this utility model; Figure 8 This is a schematic diagram of the structure of the first plastic shell of this utility model; Figure 9 This is a schematic diagram of the structure of the first shielding shell of this utility model; Figure 10 This is a schematic diagram of the male connector of this utility model; Figure 11 This is a structural schematic diagram of the male connector of this utility model from another angle; Figure 12 This is a front sectional view of the male connector of this utility model; Figure 13 This is a side sectional view of the male connector of this utility model; Figure 14 This is an exploded view of the male connector of this utility model; Figure 15 This is a schematic diagram of the structure of the second plastic shell of this utility model. The meanings of the labels in the attached diagram are as follows: First plastic shell 1, inner circumference 1a, outer circumference 1b, bottom circumference 1c, first sidewall 111, second sidewall 112, top surface 113, bottom surface 114, interlocking cavity 12, first cavity surface 121, second cavity surface 122, third cavity surface 123, first insertion cavity 13, first cavity segment 131, second cavity segment 132, first blocking part 133, first widening groove 134, second insertion cavity 14, third cavity segment 141, fourth cavity segment 142, fifth cavity segment 143, sixth cavity segment 144, second widening groove 145, external groove 15, shielding terminal 2, first external section 21, first mating section 22, first widening section 221, first elastic contact part 23, first pressing part 24, first conductive terminal 3, first insertion section 31, second widening section 311, second insertion section 32, third insertion section 33, second External section 34, second elastic contact part 35, third abutting part 36, first shielding shell 4, outer edge part 41, first tight fitting part 411, side part 412, clearance groove 413, inner edge part 42, second abutting part 421, second plastic shell 5, top part 51, interlocking part 52, first side 521, second side 522, third side 523, third insertion cavity 53, insertion groove 531, fourth insertion cavity 54, seventh cavity section 541, eighth cavity section 542, ninth cavity section 543, tenth cavity section 544, second blocking part 55, shielding plate 6, main body part 61, contact part 62, insertion end 63, guide surface 631, second shielding shell 7, first slot 71, second conductive terminal 8, fourth insertion section 81, fifth insertion section 82, sixth insertion section 83, third external section 84, second slot 85. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Please see Figures 1 to 3 The board-to-board connector assembly of this utility model includes a female connector and a male connector that are mated together to conduct electrical signals.

[0019] Please see Figures 1 to 8 The female connector includes a first plastic housing 1, a shielding terminal 2 inserted into the first plastic housing 1, a first conductive terminal 3 inserted into the first plastic housing 1, and a first shielding shell 4 sleeved on the outer periphery of the first plastic housing 1.

[0020] Please see Figure 1 , Figure 7 and Figure 8 In this embodiment, the first plastic housing 1 has a cuboid structure and is formed by plastic injection molding to provide insulation protection for the first conductive terminal 3. The first plastic housing 1 has a length, a width, and a height. The two sides along the length of the first plastic housing 1 are defined as first sidewalls 111, the two sides along the width of the first plastic housing 1 are defined as second sidewalls 112, and the two sides along the height of the first plastic housing 1 are defined as a top surface 113 and a bottom surface 114, respectively. The first sidewalls 111 and 112 are both outer sidewalls of the first plastic housing 1. A mating cavity 12 recessed in the top surface 113 for a male connector to be inserted into, a first insertion cavity 13 recessed in the top surface 113 and located inside the mating cavity 12, and a second insertion cavity 14 communicating with the mating cavity 12 are formed on the first plastic housing 1.

[0021] The mating cavity 12 is U-shaped and has two long cavity segments and two short cavity segments. The long cavity segments are distributed along the length direction, and the short cavity segments are distributed along the width direction. The mating cavity 12 divides the first plastic housing 1 into an inner perimeter portion 1a located within the mating cavity 12, an outer perimeter portion 1b located outside the mating cavity 12, and a bottom perimeter portion 1c located on the side of the inner perimeter portion 1a and the outer perimeter portion 1b near the bottom surface 114. The inner perimeter portion 1a and the outer perimeter portion 1b are separated by the mating cavity 12, which is formed by the inner perimeter portion 1a, the bottom perimeter portion 1c, and the outer perimeter portion 1b. The mating cavity 12 uniformly penetrates the top surface 113 of the first plastic housing 1 away from the bottom perimeter portion 1c along the height direction. Therefore, the height direction is defined as the insertion direction, and the male connector is inserted into the mating cavity 12 along the insertion direction. Thus, the insertion cavity 12 has a first cavity surface 121 on the inner perimeter 1a, a second cavity surface 122 on the outer perimeter 1b, and a third cavity surface 123 on the bottom perimeter 1c. In order to reduce material usage, the two sides of the insertion cavity 12 along the longitudinal direction are hollowed out and there is no bottom perimeter 1c, that is, the two short cavity segments are hollowed out, and the two sides of the bottom perimeter 1c along the longitudinal direction are flush with the bottom perimeter 1c.

[0022] A first insertion cavity 13 is formed on the inner circumference 1a. The shielding terminal 2 is inserted into the first insertion cavity 13 along the insertion direction and is exposed outside the female connector along the insertion direction. That is, after the shielding terminal 2 is inserted into the first insertion cavity 13, the first insertion cavity 13 penetrates the top surface 113 and / or bottom surface 114 of the first plastic housing 1, and the shielding terminal 2 is exposed outside the first plastic housing 1 without being blocked by the penetration side. Specifically, the first insertion cavity 13 includes a first cavity segment 131 penetrating one side of the female connector and a second cavity segment 132 penetrating both sides of the female connector. The first cavity segment 131 penetrates the bottom surface 114 of the first plastic housing 1, and the second cavity segment 132 penetrates the top surface 113 and the bottom surface 114 of the first plastic housing 1. The first cavity segment 131 and the second cavity segment 132 are distributed sequentially along the length direction and are interconnected. The widths of the first cavity segment 131 and the second cavity segment 132 are the same and evenly distributed. A first blocking part 133 is provided in the second cavity section 132 of the first insertion cavity 13, and the two sides of the first blocking part 133 are integrally connected to the two sides of the second cavity section 132 along the width direction. The first blocking part 133 is strip-shaped and is disposed close to the bottom surface 114 of the first plastic shell 1, so that a space is left between the first blocking part 133 and the second cavity section 132 to facilitate the mating of the corresponding structure of the male connector. The first blocking part 133 is used to block the shielding terminal 2 from continuing to move when it is inserted into the first insertion cavity 13. At the same time, when the male connector is pulled out, the first blocking part 133 can also be used to prevent the shielding terminal 2 from moving towards the male connector side, thereby improving the holding state and position of the shielding terminal 2, so that the shielding terminal 2 maintains elasticity while balancing the force on the shielding terminal 2. To facilitate the installation of the shielding terminal 2, a first widening groove 134 is provided on the side of the second cavity 132 along the longitudinal direction close to the first cavity 131. The first widening groove 134 is recessed on the two cavity walls of the second cavity 132 along the width direction, so that its width is wider than the width of the second cavity 132. The first widening groove 134 connects to the second cavity 132 and penetrates the bottom surface 114 of the first plastic shell 1 along the insertion direction.

[0023] To facilitate the installation and arrangement of the first conductive terminal 3, and to ensure the symmetry and uniformity of the first conductive terminal 3, the second insertion cavity 14 is configured as two sets, each connecting two long cavity segments. Specifically, the second insertion cavity 14 includes a third cavity segment 141 formed on the outer periphery 1b along the insertion direction, a fourth cavity segment 142 formed on the bottom periphery 1c, and a fifth cavity segment 143 formed on the inner periphery 1a. The third cavity segment 141 and the fifth cavity segment 143 penetrate the cavity wall of the insertion cavity 12 in the width direction to connect the insertion cavity 12. The fourth cavity segment 142 penetrates the bottom periphery 1c along the insertion direction and connects the third cavity segment 141 and the fifth cavity segment 143 in the width direction, so that the second insertion cavity 14 is formed together on the outer periphery 1b, the inner periphery 1a, and the bottom periphery 1c. To facilitate the installation of the first conductive terminal 3, the two sides of each fifth cavity segment 143 are wide-mouthed towards the bottom surface 114 to guide the first conductive terminal 3. In order to facilitate the connection between the first conductive terminal 3 and the circuit board, a sixth cavity 144 is recessed on the bottom surface 114 to connect the third cavity 141 and the fourth cavity 142.

[0024] To enhance the bonding force and tightness between the first plastic housing 1 and the first shielding shell 4, an external groove 15 is recessed on the outer side wall of the first plastic housing 1. The external groove 15 increases the bonding force between the first shielding shell 4 and the first plastic housing 1 when the first shielding shell 4 is fitted onto the first plastic housing 1. The external groove 15 can be provided on all four outer side walls of the first plastic housing 1 (i.e., the outer side wall of the periphery 1b that is away from the insertion cavity 12 and faces outward along the length or width direction). In one embodiment, an external slot 15 is provided on each of the two first sidewalls 111, and three external slots 15 are provided on each of the two second sidewalls 112. One of the three external slots 15 on the second sidewall 112 is located in the middle and is longer than the other two. The other two external slots 15 are symmetrically distributed. Each external slot 15 penetrates the top surface 113 and the bottom surface 114 of the first plastic shell 1 along the insertion direction. The external slot 15 is wide-mouthed on the side closer to the top surface 113 to facilitate the insertion of the first shielding shell 4 into it.

[0025] Please see Figure 6 and Figure 7The shielding terminal 2 includes a first external section 21 for insertion into the first cavity 131 and a first mating section 22 for insertion into the second cavity 132. A first elastic contact portion 23 is formed on the first mating section 22. The first external section 21 extends along the longitudinal direction and is adapted to fit into the first cavity 131 so that it can be inserted into the first cavity 131. When inserted into the first cavity 131, the first external section 21 can be flush with the bottom surface 114 of the first plastic housing 1 for soldering onto the circuit board. The first mating section 22, after being bent from the first outer section 21, includes a first widened section 221 extending along the insertion direction and an elastic clamping section that is bent into an inverted "Ω" shape from the first widened section 221. Two symmetrical first elastic abutment portions 23 protrude from both ends of the elastic clamping section to elastically abut against the corresponding structure of the male connector. The first elastic clamping section is spaced apart from the first widened section 221, allowing it to have elastic deformation space. At least one of the first elastic abutment portions 23 has a first tightening portion 24. In this embodiment, the first tightening portion 24 is provided only on one of the first elastic abutment portions 23. This allows for further tensioning and tightening of the male connector by adding the first tightening portion 24, while ensuring that the two first elastic abutment portions 23 symmetrically abut against the corresponding structure of the male connector to provide basic positioning. This increases the fastening force and robustness. The first abutting portion 24 protrudes inward from the first elastic abutting portion 23 and has an arc-shaped surface to facilitate sliding engagement with the corresponding structure of the male connector. The distance between the two first elastic abutting portions 23 is greater than the width of the first blocking portion 133, so that the first blocking portion 133 does not interfere with the installation of the first mating section 22.

[0026] During assembly, the first mating section 22 is aligned with the second cavity section 132, and the first widened section 221 is inserted into the first widened groove 134 along the insertion direction to achieve a tight fit. The tight fit can be achieved by protruding on both sides of the first widened section 221. The first blocking part 133 passes between the two first elastic abutting parts 23 until the first elastic clamping section abuts against the first blocking part 133. At this time, the first external section 21 is located in the first cavity section 131, thus completing the assembly of the shielding terminal 2.

[0027] Please see Figure 5 and Figure 7The first conductive terminal 3 has a first insertion section 31 inserted into the third cavity 141, a second insertion section 32 inserted into the fourth cavity 142, a third insertion section 33 inserted into the fifth cavity 143, and a second external section 34 inserted into the sixth cavity 144 for soldering to a circuit board or other electrical components. The second external section 34 is arranged along the width direction. The first insertion section 31 is bent from the second external section 34, extends along the insertion direction, and is bent again to form a second elastic contact portion 35, and continues to extend along the insertion direction in a U-shape. In order to increase the firmness between the first conductive terminal 3 and the first plastic housing 1, a second widened section 311 with a width greater than the width of the third cavity 141 is formed on a portion of the first insertion section 31 near the second external section 34, extending from both sides of the width of the first insertion section 31. Correspondingly, second widened grooves 145 are provided on both sides of the third cavity 141, extending through the bottom surface 114 in the insertion direction. When the first insertion section 31 is inserted into the third cavity 141, the second widened section 311 is tightly inserted into the second widened groove 145 in the insertion direction, thus restricting the first guide terminal from moving in the width direction and moving towards the top surface 113 in the insertion direction. The third insertion section 33 can be widened at one end of the first insertion section 31 near the third insertion section 33 to increase the area for easier mating with the male connector, but it should be narrower than the width of the third cavity 141 for easier installation. The third insertion segment 33 extends in the width direction away from the second external segment 34 after being bent from the second elastic contact portion 35. The second insertion segment 32 extends in the same direction as the first insertion segment 31 in the insertion direction after being bent from the third insertion segment 33, and then bends towards the first insertion segment 31 before continuing to tilt towards the connection between the third insertion segment 33 and the second insertion segment 32. This causes a second elastic contact portion 35 to also be formed on the end of the second insertion segment 32 away from the third insertion segment 33. This makes the portion of the first insertion segment 31 excluding the second widened segment 311, the second insertion segment 32, and the third insertion segment 33 also have an inverted "Ω" shape with two second elastic contact portions 35. The second elastic contact portions 35 on the first insertion segment 31 and the second insertion segment 32 protrude inward and extend into the mating cavity 12 after being inserted into the second insertion cavity 14. This allows the male connector to be squeezed and mated with the male connector, so that the first conductive terminal 3 surrounds a clamping cavity in the mating cavity 12. In order to allow the second insertion segment 32 to be squeezed into the clamping cavity when the male connector presses the first conductive terminal 3, the second insertion segment 32 is spaced apart from the cavity wall of the fourth cavity segment 142 in the width direction, so that after the second insertion segment 32 is inserted into the fourth cavity segment 142, there is a space for movement between the second insertion segment 32 and the sixth cavity segment 144. A third abutment 36 is provided on at least one second elastic abutment 35. The third abutment 36 is formed in the same way as the first abutment 24, and will not be described in detail here.

[0028] Please see Figure 6 , Figure 7 and Figure 9The first shielding shell 4 is a rectangular frame structure corresponding to the outer periphery 1b of the first plastic shell 1 and surrounds the top surface 113 of the outer periphery 1b. The first shielding shell 4 has an outer edge portion 41 that extends from the outer edge along the insertion direction to surround the outer wall of the outer periphery 1b, and an inner edge portion 42 that extends from the inner edge along the insertion direction to enter the insertion cavity 12 and surrounds the inner wall of the outer periphery 1b. In this embodiment, four outer edges 41 are formed corresponding to the two first side walls 111 and the two second side walls 112 and are distributed on the four outer edges of the first shielding shell 4, thereby surrounding the four outer walls of the first plastic shell 1. In one embodiment, at least one side edge of the outer edge portion 41 (i.e., at least one outer edge portion 41) is provided with a first fastening portion 411 for abutting against the external groove 15. In this embodiment, the first fastening portion 411 is provided on all four outer edges 41. The outer edges 41 are spaced apart from each other. The first fastening portions 411 on the two outer edges 41 along the length direction are respectively located on their two sides along the width direction and protrude to form protrusions. These protrusions abut against the outer grooves 15 when the outer extensions penetrate into the outer grooves 15 on the first sidewall 111. The two outer edges 41 along the width direction correspond to the three outer grooves 15 on the second sidewall 112 and respectively form side enclosure portions 412 and connecting portions. The side enclosure portions 412 are located in the middle and are used to extend into the outer groove 15 located in the middle. The two connecting portions correspond to the other two outer grooves 15 and have the first fastening portions 411 abutting against the outer grooves 15. The side enclosure portions 412 face the inner enclosure portion 1a along the width direction. A clearance groove 413 is provided on the side enclosure portion 412 at the position corresponding to the second outer connecting segment 34, thereby avoiding the second outer connecting segment 34 and allowing the second outer connecting segment 34 to pass into the clearance groove 413.

[0029] To ensure the installation of the first conductive terminal 3, the first shielding shell 4 forms a notch corresponding to the portion of the second insertion cavity 14, and the inner edge portion 42 is provided corresponding to the hollowed-out portion of the bottom enclosure portion 1c. The portion corresponding to the inner enclosure portion 1a along the width direction does not have an inner edge portion 42. The inner edge portion 42 of the second shielding shell 7, together with the first plastic shell 1, forms the insertion cavity 12. To increase the tightness between the male and female connectors when the male connector is inserted into the insertion cavity 12, a second abutting portion 421 is protruding from the inner edge portion 42 to abut the male connector when it is inserted into the insertion cavity 12. Preferably, to prevent the second abutting portion 421 from slipping due to stress when abutting the male connector, a first slot 71 can be provided on the male connector for the second abutting portion 421 to engage, so that the second abutting portion 421 cooperates with the first slot 71 to lock the male connector when it is inserted into the insertion cavity 12.

[0030] Please see Figures 10 to 15The male connector is rectangular in shape and includes a second plastic housing 5, a shielding plate 6 inserted into the second plastic housing 5, a second shielding shell 7 sleeved at both ends of the second plastic housing 5, and a second conductive terminal 8 inserted into the second plastic housing 5.

[0031] Please see Figure 11 and Figure 15 The second plastic housing 5 includes a rectangular top portion 51 and a mating portion 52 connected to the top portion 51 and shaped like a "U" or a square to match the shape of the mating cavity 12. The mating portion 52 is mated into the mating cavity 12. The height (or thickness) of the second plastic housing 5 is greater than or equal to the thickness of the mating cavity 12, so that the second plastic housing 5 does not completely sink into the mating cavity 12, but retains a portion outside the mating cavity 12 or is just flush with the top surface 113 of the first plastic housing 1. The second plastic housing 5 has a third insertion cavity 53 recessed from the top portion 51 along the insertion direction and a fourth insertion cavity 54 recessed on the mating portion 52. The shielding sheet 6 is inserted into the third insertion cavity 53 along the insertion direction, and the second conductive terminal 8 is inserted into the fourth insertion cavity 54 and protrudes from the mating portion 52.

[0032] The third insertion cavity 53 is formed along the length of the top enclosure 51 and extends through the top enclosure 51 along the insertion direction, connecting to the inner cavity of the insertion portion 52. A second blocking portion 55 is provided within the third insertion cavity 53, and the second blocking portion 55 is integrally connected along the width of the third insertion cavity 53 to the two side walls along the width direction and is close to or located near the top enclosure 51 along the insertion direction. Therefore, when the shielding plate 6 is inserted into the third insertion cavity 53, the second blocking portion 55 prevents the shielding plate 6 from moving further, thereby limiting the insertion depth of the shielding plate 6 and providing additional support for the shielding plate 6. To improve the stability between the third insertion cavity 53 and the shielding plate 6, the third insertion cavity 53 has two insertion slots 531 located on both sides (or both ends) of the third insertion cavity 53 along the length direction. The two insertion slots 531 extend through the top enclosure 51 along the insertion direction and connect to the inner cavity of the insertion portion 52.

[0033] The fourth insertion cavity 54 is opened from the top portion 51 toward the insertion portion 52 and is also configured in two sets corresponding to the second insertion cavity 14. The number of second insertion cavities 14 and fourth insertion cavities 54 in each set is the same and they are respectively located on the two sides along the width direction. The insertion portion 52 has a first side 521 for facing the inner portion 1a when inserted into the insertion cavity 12, a second side 522 for facing the bottom portion 1c, and a third side 523 for facing the outer portion 1b. The fourth insertion cavity 54 includes a seventh cavity segment 541 recessed on the first side 521, an eighth cavity segment 542 recessed on the second side 522 and connected at one end to the seventh cavity segment 541, and a ninth cavity segment 543 recessed on the third side 523 and connected to the other end of the eighth cavity segment 542, and is U-shaped. To facilitate the connection between the second conductive terminal 8 and the circuit board, a tenth cavity section 544 is recessed on the top portion 51, wherein the tenth cavity section 544 is connected to the seventh cavity section 541.

[0034] Please see Figure 13 and Figure 14 The shielding plate 6 includes a long strip-shaped main body 61, a contact portion 62 protruding from the middle of the main body 61 along the insertion direction, and two insertion ends 63 protruding from both ends of the main body 61, with the two insertion ends 63 being mirror-distributed and extending towards the third insertion cavity 53. The contact portion 62 is adapted to the two first elastic abutment portions 23 of the shielding terminal 2 for insertion into the shielding terminal 2. When the shielding plate 6 is inserted into the third insertion cavity 53 along the insertion direction, it extends into the inner cavity of the mating portion 52 and protrudes outward from the male connector along the insertion direction. After the male connector and female connector are mated, the two first elastic abutment portions 23 symmetrically abut against opposite sides of the contact portion 62, and the first clamping portion 24 clamps against one side of the contact portion 62. The two plug ends 63 protrude in a hook shape on the side away from the main body 61, and the two plug grooves 531 are adapted to the complementary shapes of the two plug ends 63, so that the plug grooves 531 form protrusions for internally engaging or locking the plug ends 63. The surface of the protrusions is arc-shaped. When the shielding plate 6 is inserted into the third insertion cavity 53, the two plug ends 63 are engaged and locked with the two plug grooves 531 along the insertion direction, thereby increasing the holding force between the plug ends 63 and the third insertion cavity 53. There are inclined guide surfaces 631 on the inner side of the two plug ends 63 facing each other. The two guide surfaces 631 are inclined outward from the side of the main body 61 towards the side of the female connector along the insertion direction, so that the two guide surfaces are wide-mouthed as a whole. Correspondingly, the inner circumference 1a can be provided with guide slopes on both sides of the guide surface 631. When the male connector and the female connector are mated together, the inner circumference 1a can abut against the top circumference 51 and the main body 61 of the shielding plate 6, thereby providing support for the shielding plate 6.

[0035] Please see Figure 14Two second shielding shells 7 are provided and are respectively disposed at both ends of the second plastic shell 5 along the longitudinal direction of the second plastic shell 5. The inner walls of the two second shielding shells 7 are adapted to the outer wall contours at both ends of the second plastic shell 5 and surround the two ends of the second plastic shell 5. The first slot 71 is recessed on the outer wall of the two second shielding shells 7 at the position corresponding to each second abutment 421.

[0036] It should be noted that both the first shielding shell 4 and the second shielding shell 7 are made of metal and are used to shield external electromagnetic interference.

[0037] Please see Figure 12 and Figure 14 The second conductive terminal 8 is adapted to the fourth insertion cavity 54 and has a fourth insertion segment 81 inserted into the seventh cavity segment 541, a fifth insertion segment 82 inserted into the eighth cavity segment 542, a sixth insertion segment 83 inserted into the ninth cavity segment 543, and a third external segment 84 inserted into the tenth cavity segment 544. The fourth insertion segment 81 extends along the insertion direction, the fifth insertion segment 82 extends along the width direction after being bent from the fourth insertion segment 81, the sixth insertion segment 83 extends in the same direction as the fourth insertion segment 81 along the insertion direction, and the third external segment 84 extends along the width direction toward the sixth insertion segment 83 after being bent from the fourth insertion segment 81 for connection with the circuit board. A second slot 85 is recessed on the sixth insertion segment 83 of the second conductive terminal 8 for the third abutment 36 to be engaged therein.

[0038] The working method of one embodiment of the board-to-board connector assembly of this utility model is as follows: the male connector and the female connector are connected to different circuit boards respectively, and the second external segment 34 and the third external segment 84 are soldered to the corresponding circuit boards respectively. Then, the mating part 52 is mated into the mating cavity 12 along the mating direction until the second elastic abutment part 35 of the first conductive terminal 3 abuts against the second conductive terminal 8 to achieve conduction. The first elastic abutment part 23 abuts against the contact part 62.

[0039] Compared with the prior art, the board-to-board connector assembly of this utility model achieves basic positioning through the first elastic abutment part 23 and the contact part 62, enhances the holding force by the first clamping part 24 and the contact part 62, thereby improving the firmness. Furthermore, by setting similar structures between the first conductive terminal 3 and the second conductive terminal 8 and between the first shielding shell 4 and the second shielding shell 7, the holding force between the first conductive terminal 3 and the second conductive terminal 8 and between the first shielding shell 4 and the second shielding shell 7 is enhanced, thereby improving the bonding force between the male connector and the female connector and improving reliability.

Claims

1. A board-to-board connector assembly, comprising a male connector and a female connector, characterized in that: The male connector has a shielding plate inserted thereon, and the shielding plate has a protruding contact portion; the female connector has a shielding terminal inserted thereon, and the shielding terminal has a first elastic abutment portion for elastically abutting against the contact portion, and the first elastic abutment portion has a protruding first clamping portion for clamping the contact portion when the first elastic abutment portion abuts against the contact portion.

2. The board-to-board connector assembly as described in claim 1, characterized in that: The male connector has a third insertion cavity, and the shielding plate is inserted into the third insertion cavity along the insertion direction, so that the contact portion is exposed outside the male connector along the insertion direction; a second blocking portion is provided in the third insertion cavity, which is used to block the shielding plate from continuing to move when the shielding plate is inserted into the third insertion cavity.

3. The board-to-board connector assembly as described in claim 2, characterized in that: The shielding sheet has plug-in ends extending from both sides toward the third insertion cavity. The third insertion cavity has a plug-in groove corresponding to the plug-in ends. The two plug-in ends are respectively engaged and locked with the plug-in grooves. The two plug-in grooves have inclined guide surfaces on their inner sides.

4. The board-to-board connector assembly as described in claim 1, characterized in that: The first elastic abutment portion is provided as two and symmetrically abuts against the opposite sides of the contact portion, and at least one of the elastic abutment portions has the first pressing portion.

5. The board-to-board connector assembly as described in claim 1 or 4, characterized in that: The female connector has a first insertion cavity. The shielding terminal is inserted into the first insertion cavity along a insertion direction and protrudes outward from the female connector along the insertion direction. A first blocking part is protruding in the first insertion cavity. The first blocking part is used to block the shielding terminal from moving further when it is inserted into the first insertion cavity. The first insertion cavity includes a first cavity segment penetrating one side of the female connector and a second cavity segment penetrating both sides of the female connector. The shielding terminal includes a first external segment for insertion into the first cavity segment and a first mating segment for insertion into the second cavity segment. The first elastic abutment is formed on the first mating segment, and the first blocking part is located in the second cavity segment.

6. The board-to-board connector assembly as described in claim 5, characterized in that: The female connector further includes a first plastic housing with a mating cavity, a first insertion cavity and a second insertion cavity, a first shielding shell sleeved on the first plastic housing, and a first conductive terminal inserted into the second insertion cavity and having a second elastic contact portion. The mating cavity is connected to the second insertion cavity so that the second elastic contact portion of the first conductive terminal extends into the mating cavity.

7. The board-to-board connector assembly as described in claim 6, characterized in that: The first plastic shell includes a peripheral portion, an inner portion located inside and spaced apart from the peripheral portion, and a bottom portion connected to the peripheral portion and the inner portion. The interlocking cavity is formed between the peripheral portion, the inner portion and the bottom portion. The first interlocking cavity is formed on the inner portion. The second interlocking cavity is formed together on the peripheral portion, the inner portion and the bottom portion.

8. The board-to-board connector assembly as described in claim 6, characterized in that: The first shielding shell has an outer edge portion surrounding the outer side wall of the outer periphery and an inner edge portion extending into the interlocking cavity and surrounding the inner side wall of the outer periphery; an outer groove is provided on the outer side wall of the outer periphery for the outer edge portion to extend into; and a first fastening portion for abutting against the outer groove is provided on at least one side of the outer edge portion.

9. The board-to-board connector assembly as described in claim 8, characterized in that: The inner edge is provided with a second abutting part for abutting the male connector when the male connector is inserted into the mating cavity, and a first slot is provided on the male connector for the second abutting part to be inserted into.

10. The board-to-board connector assembly as claimed in claim 6, characterized in that: The male connector further includes a second plastic housing with a third insertion cavity and a fourth insertion cavity, a second shielding shell sleeved on the second plastic housing, and a second conductive terminal inserted into the fourth insertion cavity. The shielding shell is inserted into the second plastic housing. The second plastic housing includes a top portion and a hollow inner portion connected to the top portion and adapted to the insertion cavity for insertion therein. The third insertion cavity communicates with the inner cavity of the insertion portion. The fourth insertion cavity is formed on the insertion portion and makes the second conductive terminal visible when inserted therein. A third abutting portion protrudes from the second elastic contact portion, and a second slot is formed on the second conductive terminal for the third abutting portion to be engaged therein.

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