Male seat connector, female seat connector, electric connector assembly and electric connection device

Abstract

The invention provides a male seat connector, a female seat connector, an electric connector assembly and a board-to-board electric connection device comprising the electric connector assembly. The male connector may define: a thickness extending in a first direction; a width extending in a second direction perpendicular to the first direction; and a length extending in a third direction perpendicular to both the first direction and the second direction, the male seat connector may include a plurality of male seat terminals arranged in a male seat terminal array and a male seat accommodating member for accommodating the male seat terminals, the lengths of two adjacent rows of male seat terminals arranged along the second direction or two adjacent columns of male seat terminals arranged along the third direction in the first direction of the male seat connector are different from each other.

Description

Technical Field

[0001] The present application relates to a male connector, a female connector, an electrical connector assembly including the male connector and the female connector, and a board-to-board electrical connection device including the electrical connector assembly. Background Art

[0002] The application of board-to-board (BTB) connectors is becoming more and more widespread. In the field of electronic equipment, board-to-board connectors are widely used in connecting components such as display screens, touch screens, cameras, and radio frequency components to printed circuit boards.

[0003] A board-to-board connector is a connector used inside electronic products to achieve signal transmission between two circuit boards. Usually, a board-to-board connector includes a plug connector (male connector) and a socket connector (female connector) that are plugged into each other. The plug connector (male connector) and the socket connector (female connector) are respectively welded to the corresponding circuit boards through the welding parts of their conductive terminals so that the connectors are fixed to the corresponding circuit boards. When the plug connector is inserted into the socket connector, an electrical connection between the two circuit boards can be achieved. In addition, the terminals in the commonly used board-to-board connector do not transmit current.

[0004] In the currently known board-to-board connector applications, more and more terminals are required to transmit signals and / or currents. In order to achieve a larger number of terminals, one measure is to increase the number of plug connectors and socket connectors, and another measure is to increase the number of conductive terminals of each of the plug connector and the socket connector. However, the use of multiple plug connectors and socket connectors that match each other between two boards in the board-to-board connector places higher requirements on the mutual position relationship and size of the plug connector and the socket connector.

[0005] In order to effectively control the mating force required for engaging the connector, a typical board-to-board connector has a double-row configuration. Even for connectors with multiple rows, the terminals need to be wider, and pads are usually provided between two adjacent rows of terminals to provide additional support. In addition, the mounting surface of the board-to-board connector should be flat enough for stable mounting with the printed circuit board, which limits the physical size of the board-to-board connector (e.g., not too long) and thus limits the terminal density.

[0006] In the related art, in order to provide a stronger connection between the connector and the printed circuit board, the conductive terminals of some board-to-board connectors are connected to the printed circuit board through solder balls, so that the connector has a board stacking type ball grid array configuration, but this makes the manufacturing process of the connector more complicated and therefore the cost will be higher. In addition, the conventional board-to-board connector has a low mechanical strength.

[0007] Therefore, it is necessary to conduct further research on the board-to-board connector. SUMMARY OF THE INVENTION

[0008] This section provides a general overview of the present application, rather than a full disclosure of the entire scope or all features of the present application.

[0009] In view of the above problems in the related art, the present application provides a male connector, a female connector, an electrical connector assembly including the male connector and the female connector, and a board-to-board electrical connection device including the electrical connector assembly, thereby at least partially solving the above problems.

[0010] One aspect of the present application provides a male connector. The male connector may define a thickness extending in a first direction, a width extending in a second direction perpendicular to the first direction, and a length extending in a third direction perpendicular to both the first direction and the second direction. The male connector may include a plurality of male terminals arranged in a male terminal array and a male accommodating member for accommodating the male terminals. The lengths in the first direction of two adjacent rows of male terminals arranged in the second direction or two adjacent columns of male terminals arranged in the third direction are different from each other.

[0011] In some exemplary embodiments, the male terminal array may include at least three rows and / or at least three columns of male terminals. The lengths of the male terminals arranged in the same row or the same column are the same in the first direction, and the male terminals in the male terminal array are arranged such that every two rows or every two columns have the same size and configuration.

[0012] In some exemplary embodiments, the male terminal may include a male terminal proximal end portion, a male terminal distal end portion, and an intermediate connecting portion connecting the male terminal proximal end portion and the male terminal distal end portion. The outer contour dimension of the male terminal distal end portion in the second direction is smaller than the outer contour dimension of the male terminal proximal end portion in the second direction.

[0013] In some exemplary embodiments, the outer contour dimension of the male terminal distal end portion in the third direction may be smaller than the outer contour dimension of the male terminal proximal end portion in the third direction.

[0014] In some exemplary embodiments, the male accommodating member of the male connector may include a male accommodating member base portion. The male accommodating member base portion may include a plurality of male accommodating member through holes arranged in the same array form as the male terminal array. Each male terminal in the male connector respectively extends through a corresponding one of the plurality of male accommodating member through holes, such that the male terminal distal end portion of each male terminal extends beyond the distal side surface of the male accommodating member base portion, and the male terminal proximal end portion of each male terminal extends beyond the proximal side surface of the male accommodating member base portion.

[0015] In some exemplary embodiments, the through hole of the male receptacle member may include a distal end portion of the through hole of the male receptacle member for receiving the distal end portion of the male receptacle terminal in a form - fit manner and a proximal end portion of the through hole of the male receptacle member for receiving the proximal end portion of the male receptacle terminal in a form - fit manner. The dimension of the distal end portion of the through hole of the male receptacle member in the second direction may be smaller than the dimension of the proximal end portion of the through hole of the male receptacle member in the second direction.

[0016] In some exemplary embodiments, the dimension of the distal end portion of the through hole of the male receptacle member in the third direction may be smaller than the dimension of the proximal end portion of the through hole of the male receptacle member in the third direction.

[0017] That is to say, the through hole of the male receptacle member has a distal end portion of the through hole of the male receptacle member with a smaller dimension and a proximal end portion of the through hole of the male receptacle member with a larger dimension. Therefore, when the male receptacle terminal is received in the male receptacle member, the distal end portion of the male receptacle terminal with a smaller dimension is received in the distal end portion of the through hole of the male receptacle member with a smaller dimension and the proximal end portion of the male receptacle terminal with a larger dimension is received in the proximal end portion of the through hole of the male receptacle member with a larger dimension, thereby providing support for the male receptacle terminal, so that when the male connector is connected to the female connector, the male receptacle terminal can stably cooperate with the female receptacle terminal of the female connector.

[0018] In some exemplary embodiments, the proximal end portion of the male receptacle terminal may include at least one convex portion disposed adjacent to the proximal end of the proximal end portion of the male receptacle terminal and extending and protruding from opposite sides of the proximal end portion of the male receptacle terminal in the second direction. The convex portion is configured to taper from the side of the proximal end portion of the male receptacle terminal toward the distal end portion of the male receptacle terminal in the first direction. When the proximal end portion of the male receptacle terminal is received in the proximal end portion of the through hole of the male receptacle member, at least a part of the convex portion abuts against two inner side surfaces of the proximal end portion of the through hole of the male receptacle member that are opposite to each other in the second direction, thereby forming an interference fit with the proximal end portion of the through hole of the male receptacle member, so that the male receptacle terminal can be stably received in the through hole of the male receptacle member, thereby preventing the male receptacle terminal from being accidentally pulled out of the through hole of the male receptacle member.

[0019] In some exemplary embodiments, the intermediate connection portion may include a bending portion. The bending portion may be configured such that: the central axis of the proximal end portion of the male receptacle terminal extending in the first direction and the central axis of the distal end portion of the male receptacle terminal extending in the first direction are offset from each other by a certain distance in the third direction, and when the proximal end portion of the male receptacle terminal is received in the proximal end portion of the through hole of the male receptacle member, the outer side surface of the proximal end portion of the male receptacle terminal that is far from the central axis of the proximal end portion of the male receptacle terminal in the third direction abuts against the inner side surface of the proximal end portion of the through hole of the male receptacle member in the third direction. Thus, the proximal end portion of the through hole of the male receptacle member can provide stable support for the proximal end portion of the male receptacle terminal, so that the male receptacle terminal can be stably received in the through hole of the male receptacle member.

[0020] In some exemplary embodiments, the male receptacle member of the male connector may include a male receptacle sidewall extending in a first direction from an outer peripheral edge of a base portion of the male receptacle member. The male receptacle sidewall is integrally formed with the base portion of the male receptacle member, and a dimension of the male receptacle sidewall extending in the first direction is greater than a dimension of a portion of the male terminal extending beyond a distal side surface of the base portion of the male receptacle member.

[0021] Another aspect of the present application provides a female connector. The female connector may have: a first direction defining a thickness extension direction of the female connector; a second direction perpendicular to the first direction defining a width dimension of the female connector; and a third direction defining a longitudinal extension direction of the female connector, the third direction being perpendicular to the first direction and the second direction respectively. The female connector may include a plurality of female terminals arranged in a female terminal array and a female receptacle member for accommodating the female terminals. In the female terminal array, the female terminals are arranged in rows along the second direction and in columns along the third direction.

[0022] In some exemplary embodiments, each of the plurality of female terminals may have the same dimension in the first direction.

[0023] In some exemplary embodiments, the female terminal may include a female terminal distal end portion and a female terminal proximal end portion. The female terminal proximal end portion may be formed into a plate-like portion. The female terminal distal end portion includes a pair of leg-like portions protruding from a distal end portion of the female terminal proximal end portion. The pair of leg-like portions includes a first leg-like portion and a second leg-like portion. The first leg-like portion and the second leg-like portion are formed such that they are spaced apart at a portion adjacent to the female terminal proximal end portion and approach each other at free end portions away from the female terminal proximal end portion to form a clamping portion.

[0024] In some exemplary embodiments, the first leg-like portion may include a first leg-like proximal end portion adjacent to the female terminal proximal end portion and a first leg-like distal end portion away from the female terminal proximal end portion. The second leg-like portion may include a second leg-like proximal end portion adjacent to the female terminal proximal end portion and a second leg-like distal end portion away from the female terminal proximal end portion. The distance between the first leg-like distal end portion and the second leg-like distal end portion is less than the distance between the first leg-like proximal end portion and the second leg-like proximal end portion.

[0025] In some exemplary embodiments, the distal end portion of the first leg portion may include a first flat plate portion continuous with the proximal end portion of the first leg portion and a first helical portion helically extending from the first flat plate portion along a first helical direction and gradually away from the first flat plate portion. The distal end portion of the second leg portion may include a second flat plate portion continuous with the proximal end portion of the second leg portion and a second helical portion helically extending from the second flat plate portion along a second helical direction opposite to the first helical direction and gradually away from the second flat plate portion. The first helical portion and the second helical portion may be configured to be spaced apart from each other and face each other. The distance between the first helical portion and the second helical portion spaced apart from each other may be less than the distance between the proximal end portion of the first leg portion and the proximal end portion of the second leg portion, thereby forming a clamping portion.

[0026] In some exemplary embodiments, the female housing member of the female connector includes a female housing member base portion. The female housing member base portion includes a plurality of female housing member through holes arranged in the form of an array identical to the female terminal array. Each female terminal of the female connector is respectively received in a corresponding one of the plurality of female housing member through holes, such that the distal end portion of the female terminal of each female terminal is not visible from the distal side surface of the female housing member base portion, and the proximal end portion of the female terminal of each female terminal extends beyond the proximal side surface of the female housing member base portion.

[0027] Another aspect of the present application provides an electrical connector assembly. The electrical connector assembly may include the above-mentioned male connector and female connector arranged in pairs. In a state where the male connector and the female connector are engaged with each other, the distal side surfaces of the male housing member base portion and the female housing member base portion face each other in a first direction, such that a plurality of male terminals arranged in a male terminal array are engaged with a plurality of female terminals arranged in a female terminal array in a one-to-one correspondence to form an electrical connection.

[0028] Through the above-mentioned electrical connector assembly provided by the present application, since the lengths of adjacent two rows of male terminals arranged in a second direction or adjacent two columns of male terminals arranged in a third direction of the male connector in the first direction of the male connector are different from each other, therefore, the forces required for connecting the male connector to the female connector and for disassembling the male connector from the female connector can act on the male terminals at different times, such that the connection force / disassembly force can be dispersed throughout the connection / disassembly process, and a relatively large force will not be generated on the male terminals simultaneously, thereby reducing the difficulty of connecting / disassembling the male connector and the female connector.

[0029] When the male connector and the female connector are in an assembled state, since both the male terminals of the male connector and the female terminals of the female connector adopt the form of corresponding terminal arrays, the number of available male terminals and female terminals is increased, thereby improving the speed of electrical connection / signal connection of the electrical connector assembly.

[0030] In some exemplary embodiments according to the present application, in a state where the male connector and the female connector are engaged, the distal end portion of each male terminal of the male connector is inserted into a corresponding one of a plurality of female receptacle through-holes of the female receptacle of the female connector in a first direction, and is engaged with the distal end portion of the female terminal received in the corresponding female receptacle through-hole. In particular, the distal end portion of the male terminal is engaged with the first helical portion and the second helical portion of the distal end portion of the female terminal and is clamped between the first helical portion and the second helical portion.

[0031] In some exemplary embodiments according to the present application, the male receptacle and the female receptacle respectively include positioning feature portions for forming a form-fit in a state where the male connector and the female connector are engaged. The male receptacle and the female receptacle are combined through the corresponding positioning feature portions, preventing the problem of the mating orientation reversal when the male connector and the female connector are mated, thereby providing guidance for the mating of the male connector and the female connector.

[0032] In some exemplary embodiments according to the present application, the side wall of the male receptacle of the male receptacle may include a first end wall and a second end wall opposite to each other in a first direction, and the positioning feature portion may include: male receptacle base recesses formed at two opposite ends in a third direction on the distal side surface of the male receptacle base of the male connector; and a third end wall and a fourth end wall provided at opposite ends of the female receptacle base of the female connector along the third direction, the third end wall and the fourth end wall being configured to extend beyond the distal side surface of the female receptacle base in the first direction, such that: in a state where the male connector and the female connector are engaged, the third end wall and the fourth end wall are respectively inserted into grooves jointly formed by the first end wall and the second end wall and the corresponding male receptacle base recesses. Thus, when the male connector and the female connector are connected, the third end wall and the fourth end wall must first be inserted into the grooves to achieve the mating of the male connector and the female connector. Therefore, the positioning feature portion provides a guiding and positioning function for the connection of the male connector and the female connector.

[0033] In some exemplary embodiments according to the present application, the sidewall of the male receptacle member may include a first sidewall and a second sidewall that are opposite to each other in the second direction. The positioning feature portion may further include: first sidewall recesses respectively disposed at opposite ends of the first sidewall in the third direction, and a first sidewall protrusion that protrudes toward the inside of the male receptacle member and is disposed between the two first sidewall recesses adjacent to a corresponding one of the two first sidewall recesses; on one side of the third end wall and the fourth end wall of the female receptacle member corresponding to the first sidewall of the male receptacle member in the second direction, a third end wall protrusion and a fourth end wall protrusion are respectively disposed to extend beyond the side surface of the base portion of the female receptacle member in the second direction. Wherein, in a state where the male connector and the female connector are engaged, the third end wall protrusion and the fourth end wall protrusion of the female connector can respectively be engaged with corresponding first sidewall recesses provided in the first sidewall of the male connector in a form-fit manner, and the first sidewall protrusion abuts against a portion of the side surface of the female receptacle member where the third end wall protrusion and the fourth end wall protrusion are not provided.

[0034] In some exemplary embodiments according to the present application, the positioning feature portion may further include: second sidewall protrusions respectively disposed at opposite ends of the second sidewall in the third direction and protruding toward the inside of the male receptacle member, wherein, in a state where the male connector and the female connector are engaged, the second sidewall protrusions are engaged with the side surface of the female receptacle member of the female connector where the third sidewall protrusion and the fourth sidewall protrusion are not provided. In this case, when the male connector and the female connector are in an assembled state, the male receptacle member of the male connector contacts the female receptacle member of the female connector through the first sidewall protrusion and the second sidewall protrusion, so that the mating of the male connector and the female connector can only be achieved in the correct orientation.

[0035] Through the electrical connector assembly provided by the present application, each of the male connector and the female connector has narrower terminals arranged in an array form, thereby eliminating the need for wider conductive terminals and gaskets for supporting the conductive terminals, saving manufacturing costs and making the overall size of the electrical connector assembly smaller.

[0036] In addition, since the array form and the length of the conductive terminals (male terminals and female terminals) of the electrical connector assembly provided by the present application can be changed as needed, the overall configuration of the electrical connector assembly provided by the present application can be easily enlarged or reduced as needed, so as to meet the needs of users for electrical connector assemblies of different configurations.

[0037] Another aspect of the present application provides a board-to-board electrical connection device, which may include: a pair of printed circuit boards, and an electrical connector assembly provided according to the above embodiments; the pair of printed circuit boards may be respectively coupled to the male connector and the female connector in the electrical connector assembly, and in a state where the male connector and the female connector are engaged, the pair of printed circuit boards are electrically connected to each other and form a configuration substantially parallel to each other.

[0038] In some exemplary embodiments according to the present application, the proximal end portion of each male terminal of the male connector may extend beyond the proximal side surface of the male housing base of the male housing and be connected to one of the pair of printed circuit boards, and the proximal end portion of each female terminal of the female connector may extend beyond the proximal side surface of the female housing base of the female housing and be connected to the other of the pair of printed circuit boards.

[0039] In some exemplary embodiments according to the present application, the proximal end portion of the male terminal extending beyond the proximal side surface of the male housing base is formed with an L-shaped bending portion, and the proximal end portion of the female terminal extending beyond the proximal side surface of the female housing base is formed with an L-shaped bending portion. The L-shaped bending portion of the male terminal and / or the L-shaped bending portion of the female terminal increase the connection area for connecting to the corresponding printed circuit board, thereby increasing the connection strength between the male terminal and the corresponding printed circuit board, and ensuring the reliability of the board-to-board electrical connection device. In addition, the L-shaped bending portion of the male terminal and / or the L-shaped bending portion of the female terminal are directly welded to the contact portion of the corresponding printed circuit board, without the need to use additional solder balls to weld the male terminal and / or the female terminal to the corresponding printed circuit board, thereby making the board-to-board electrical connection device easier to manufacture and reducing the manufacturing cost.

[0040] In some exemplary embodiments according to the present application, the male connector may further include a first housing sleeved on the side wall of the male housing of the male connector, and the female connector may further include a second housing sleeved on the outside of the base of the female housing of the female connector. When the first housing and the second housing are respectively sleeved on the male connector and the female connector and the male connector and the female connector in the connected state are connected to the printed circuit board, the board-to-board electrical connection device not only realizes electrical connection, but also realizes the transmission of current. Therefore, there is no need to adopt an additional connector dedicated to current transmission, thereby saving space and reducing costs.

[0041] In some exemplary embodiments according to the present application, the first housing may include: a first portion sleeved on the first end wall, a second portion sleeved on the second end wall, a third portion sleeved on the first side wall, and a fourth portion sleeved on the second side wall. The first portion, the second portion, the third portion, and the fourth portion are all formed as U-shaped members having a long side portion and a short side portion, and have open ends in a direction toward the proximal side of the base of the male receptacle member along a first direction. The first portion, the second portion, the third portion, and the fourth portion are respectively detachably sleeved on the first end wall, the second end wall, the first side wall, and the second side wall via the open ends, such that the long side portion of the U-shaped member engages with the outer surfaces of the first end wall, the second end wall, the first side wall, and the second side wall, and the short side portion of the U-shaped member engages with the inner surfaces of the first end wall, the second end wall, the first side wall, and the second side wall facing the inside of the male receptacle member.

[0042] In some exemplary embodiments according to the present application, at the edges of the proximal side surfaces of the long side portions of the U-shaped members constituting the first portion, the second portion, the third portion, and the fourth portion of the first housing, a plurality of first straight extensions and a plurality of first bends may be alternately provided. The first bends may include a first straight portion disposed in the same plane as the first straight extensions and a first bent portion connected to the first straight portion. In a direction toward the proximal side of the base of the male receptacle member along the first direction, the end surface of the first straight extension is flush with the end surface of the first bent portion of the first bend, and the outer peripheral edge of the distal side surface of the base of the male receptacle member may include a plurality of first lugs with first apertures. In a state where the first housing is sleeved on the side wall of the male receptacle member, the first bends may be disposed between two adjacent first lugs or the first lugs may be disposed between two adjacent first bends. The first straight extensions of the first housing may be inserted through the first apertures in the first lugs and extend beyond the proximal side surface of the base of the male receptacle member, and the dimension by which the first straight extensions extend beyond the proximal side surface of the base of the male receptacle member may be the same as the dimension by which the proximal ends of the male terminals of the male connector extend beyond the proximal side surface of the base of the male receptacle member, so that the male terminals of the male connector and the first housing can be welded to the printed circuit board in the same plane.

[0043] In some exemplary embodiments according to the present application, in a direction toward the proximal side of the base of the male receptacle member along the first direction, the first housing may be connected to one of a pair of printed circuit boards via the end surfaces of the first straight extensions and the first bent portions of the first bends.

[0044] In some exemplary embodiments according to the present application, the short side portions of the U-shaped members constituting the first part, the second part, the third part, and the fourth part of the first housing may be configured as elastically deformable members such that, in a state where the male connector is engaged with the female connector, the short side portions of the U-shaped members constituting the first part, the second part, the third part, and the fourth part of the first housing respectively abut against the outer surface of the base portion of the female housing member of the female connector and apply a biasing force to the female connector toward the inside of the male housing member of the male connector.

[0045] In some exemplary embodiments according to the present application, the short side portions of the U-shaped members constituting the first part, the second part, the third part, and the fourth part of the first housing may include a plurality of short side segments spaced apart from each other and extending in a direction of the proximal side toward the base portion of the male housing member along a first direction. Each of the plurality of short side segments is connected to the long side portion of the U-shaped member through a corresponding intermediate connecting portion. Each short side segment includes a frame portion and an elastic overhanging portion. One end of the elastic overhanging portion is connected to the frame portion, and the other end of the elastic overhanging portion is separated from the frame portion along the first direction to form a free end portion. And the free end portion of the elastic overhanging portion is bent to protrude toward the inside of the male housing member such that, in a state where the male connector is engaged with the female connector, the elastic overhanging portion of each short side segment abuts against the outer surface of the base portion of the female housing member of the female connector and applies a biasing force to the female connector toward the inside of the male housing member of the male connector.

[0046] In some exemplary embodiments according to the present application, the inner surface of the side wall of the male housing member of the male connector may include a plurality of side wall grooves and a plurality of side wall protrusions alternately arranged. The base portion of the male housing member of the male connector may include a plurality of receiving portions corresponding to the plurality of grooves. The receiving portions may be recessed from the distal side surface of the base portion of the male housing member toward the proximal side of the base portion of the male housing member along the first direction.

[0047] In some exemplary embodiments according to the present application, a tip protruding portion is provided at an end of each short side segment opposite to the intermediate connecting portion. The tip protruding portion may be aligned with the elastic overhanging portion of the short side segment in the first direction such that, in a state where the first housing is sleeved on the side wall of the male housing member, the elastic overhanging portion of the short side segment may be aligned with the side wall groove provided on the inner surface of the side wall of the male housing member, and the tip protruding portion may be received in the receiving portion corresponding to the groove.

[0048] In some exemplary embodiments according to the present application, the central portion of the free end portion of the elastic overhanging portion may include an overhanging arm recessed portion, thereby forming a pair of overhanging arm contact portions at the free end portion of the elastic overhanging portion.

[0049] In some exemplary embodiments according to the present application, the second housing may include: a third end wall housing and a fourth end wall housing respectively sleeved to the outside of the third end wall and the fourth end wall in the third direction of the base of the female socket accommodating member in a detachable manner; and a third side housing and a fourth side housing respectively sleeved to the outside of the third side and the fourth side in the second direction of the base of the female socket accommodating member in a detachable manner. Each of the third end wall housing, the fourth end wall housing, the third side housing, and the fourth side housing may include a housing fixing portion configured to engage with the edge of the distal side surface of the base of the female socket accommodating member and a housing attachment portion configured to be adjacent to the proximal side surface of the base of the female socket accommodating member.

[0050] In some exemplary embodiments according to the present application, the edge of the distal side surface of the base of the female socket accommodating member may include fixed recesses provided at intervals. The housing fixing portion may include a plurality of abutting portions and a plurality of fixed mounting portions provided alternately. The fixed mounting portions are configured to bend towards the base of the female socket accommodating member and engage into the fixed recesses. Optionally, the abutting portions bend towards the base of the female socket accommodating member and abut against the edge of the distal side surface of the base of the female socket accommodating member.

[0051] In some exemplary embodiments according to the present application, the edge of the proximal side surface of the base of the female socket accommodating member may include a plurality of second lugs provided at intervals. Each second lug includes a second orifice. The housing attachment portion may include a plurality of second straight extensions and a plurality of second bends provided alternately. The second bend includes a second straight portion disposed in the same plane as the second straight extension and a second bent portion connected to the second straight portion. In the direction towards the proximal side of the base of the female socket accommodating member along the first direction, the end surface of the second straight extension is flush with the end surface of the second bent portion of the second bend. And, in the state where the second housing is sleeved to the outside of the base of the female socket accommodating member, the second bend may be disposed between two adjacent second lugs or the second lugs may be disposed between two adjacent second bends. The second straight extension of the second housing is inserted through the second orifice in the second lug and extends beyond the proximal side surface of the base of the female socket accommodating member. And, the dimension that the second straight extension extends beyond the proximal side surface of the base of the female socket accommodating member is the same as the dimension that the proximal end portion of the female socket terminal of the female socket connector extends beyond the proximal side surface of the base of the female socket accommodating member, so that the female socket terminal of the female socket connector and the second housing can be connected to the printed circuit board in the same plane.

[0052] In some exemplary embodiments according to the present application, in the direction towards the proximal side of the base of the female socket accommodating member along the first direction, the second housing is connected to one of a pair of printed circuit boards through the end surface of the second straight extension and the second bent portion of the second bend.

[0053] The electrical connector assembly provided by the present application and the electrical connection device including the electrical connector assembly adopt an arrangement structure of conductive terminals in an array form, and adjacent two rows or adjacent two columns of the male seat terminals of the male seat connector of the electrical connector assembly have different heights in the first direction, so that the number of conductive terminals of the electrical connector assembly is increased. In addition, the number of rows, the number of columns in the electrical connector assembly, and the dimensions of the male seat terminals and the female seat terminals in the first direction can all be customized according to actual needs, thus realizing the modular design of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0055] Figure 1A and Figure 1B respectively show a top perspective view and a bottom perspective view of a male seat connector provided according to some embodiments of one aspect of the present disclosure;

[0056] Figure 2 shows Figure 1A and Figure 1B a three-dimensional exploded view of the male seat connector of after being flipped 180°;

[0057] Figure 3A and Figure 3B respectively show a side view and a cross-sectional view of a male seat connector provided according to some other embodiments of one aspect of the present disclosure, Figure 3C shows Figure 3B a detailed enlarged view of part M in ;

[0058] Figure 4 shows Figure 2 a top perspective view of the male seat housing of the male seat connector shown in ;

[0059] Figure 5 shows Figure 3A a top perspective view of the male seat housing of the male seat connector shown in after being flipped 180°;

[0060] Figure 6 shows a three-dimensional view of the male seat terminals of a male seat connector provided according to some embodiments of the present application;

[0061] Figure 7 shows a three-dimensional view of the male seat terminals of a male seat connector provided according to some other embodiments of the present application;

[0062] Figure 8A and Figure 8B show a top view and a cross-sectional view of a male connector provided according to some further embodiments of one aspect of the present application, Figure 8C show Figure 8B a detailed enlarged view of the N part in ;

[0063] Figure 9 show a top perspective view of a female connector provided according to some embodiments of another aspect of the present application;

[0064] Figure 10 show Figure 9 a perspective exploded view of the female connector of ;

[0065] Figure 11A and Figure 11B respectively show Figure 9 a side view and a cross-sectional view of the female connector of ;

[0066] Figure 12 show a top perspective view of a female connector provided according to some other embodiments of another aspect of the present application;

[0067] Figure 13 show a perspective view of a female terminal of a female connector provided according to some embodiments of another aspect of the present application;

[0068] Figure 14 show a top perspective view of an electrical connector assembly in an assembled state provided according to some embodiments of yet another aspect of the present application;

[0069] Figure 15 show Figure 14 a bottom perspective view of the electrical connector assembly in an assembled state of ;

[0070] Figure 16 show Figure 14 and Figure 15 a perspective exploded view of the electrical connector assembly shown in ;

[0071] Figure 17A and Figure 17B respectively show Figure 14 and Figure 15 a side view and a cross-sectional view of the electrical connector assembly of ;

[0072] Figure 18 show a schematic cross-sectional view of the electrical connector assembly taken along line D-D of ; Figure 14 ;

[0073] Figure 19 show Figure 14 a top plan view of the electrical connector assembly in an assembled state of ;

[0074] Figure 20 Shows an exploded perspective view of a board-to-board electrical connection device provided according to some embodiments of another aspect of the present application;

[0075] Figure 21 Shows Figure 20 A bottom perspective view of a printed circuit board, a male connector, and a first housing of the board-to-board electrical connection device in FIG. in a connected state;

[0076] Figure 22 Shows Figure 20 A perspective view of the printed circuit board, the male connector, and the first housing shown in FIG. after being flipped 180 degrees in a connected state;

[0077] Figure 23 Shows Figure 20 An exploded schematic view of the male connector and the first housing of the electrical connection device in FIG.

[0078] Figure 24 Shows Figure 20 A perspective view of a part of the first housing of the electrical connection device in FIG.

[0079] Figure 25 Shows Figure 20 A top perspective view of a printed circuit board, a female connector, and a second housing of the electrical connection device in FIG. in a connected state;

[0080] Figure 26 Shows Figure 20 An exploded perspective view of the female connector and the second housing in the electrical connection device in FIG.

[0081] Figure 27 Shows Figure 20 A perspective view of a part of the second housing of the electrical connection device in FIG. and

[0082] Figure 28A And Figure 28B Respectively show Figure 20 A top plan view and a cross-sectional schematic view of the electrical connection device in FIG. in a connected state, Figure 28C Shows Figure 28B A detailed enlarged view of the S part in FIG. Detailed implementation manners

[0083] The present application will be described in detail below with reference to the accompanying drawings by way of exemplary embodiments. It should be noted that the exemplary embodiments of the present application are intended to enable those of ordinary skill in the art to easily implement the present application. The various embodiments of the present application can be implemented in many different forms and should not be construed as limited to the embodiments set forth in the present application. Accordingly, the following detailed description of the present application is for illustrative purposes only and is in no way a limitation of the present application. In addition, the same reference numerals are used in the respective drawings to denote the same components. Further, terms such as "first", "second", etc. are for convenience of description only and are not to be construed as indicating or implying relative importance or relative order.

[0084] It should also be noted that, for clarity, not all features of the actual specific embodiments are described and illustrated in the specification and the drawings. Moreover, to avoid unnecessary details obscuring the technical solutions of the present application that the present application focuses on, only the device structures closely related to the technical solutions of the present application are described and illustrated in the drawings and the specification, while other details that have little to do with the technical content of the present application and are known to those skilled in the art are omitted.

[0085] It should be understood that the orientation or positional relationship indicated by terms such as "inner", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.

[0086] Board-to-board connectors are widely used inside electronic products to achieve signal transmission between two circuit boards. Generally, a board-to-board connector includes a male connector and a female connector that can be plugged and engaged with each other. The male connector and the female connector are respectively welded to the corresponding circuit boards through the welding portions of their respective conductive terminals, thereby restricting the relative movement of the connector with respect to the corresponding circuit board. When the male connector and the female connector are plugged and engaged with each other face to face, the electrical connection between the two circuit boards can be achieved.

[0087] One aspect of the present application provides a male connector, referring to Figures 1A to 8C。In some exemplary embodiments, the male connector 10 defines a thickness extending in a first direction Y, a width extending in a second direction X perpendicular to the first direction Y, and a length extending in a third direction Z perpendicular to both the first direction Y and the second direction X. Those skilled in the art can understand that the first direction Y is also referred to as the thickness direction or height direction of the male connector 10, the second direction X is also referred to as the width direction of the male connector 10, and the third direction Z is also referred to as the length direction of the male connector 10. The male connector 10 may include a plurality of male terminals 11 arranged in a male terminal array and a male accommodating member 12 for accommodating the male terminals 11, wherein the lengths of two adjacent rows of male terminals arranged in the second direction X or two adjacent columns of male terminals arranged in the third direction Z in the first direction Y of the male connector 10 are different from each other.

[0088] Specifically, in some examples, as Figure 3B shown, the lengths of two adjacent rows of male terminals 11 arranged in the second direction X in the first direction Y are different from each other.

[0089] In some exemplary embodiments according to the present application, the male terminal array includes at least three rows and / or at least three columns of male terminals. Referring to Figure 1A and Figure 1B , the lengths of the male terminals 11 arranged in the same row or the same column in the first direction Y are the same, and the male terminals in the male terminal array are arranged such that every two rows or every two columns have the same size and configuration, as Figure 3B shown.

[0090] Specifically, in some examples of the exemplary embodiments according to the present application, as can be seen from Figure 3B , the male terminals 11 in the first row starting from the left in the second direction X may have the same length in the first direction Y as the male terminals 11 in the fourth row; the male terminals 11 in the second row starting from the left in the second direction X may have the same length in the first direction Y as the male terminals 11 in the fifth row; the male terminals in the third row starting from the left in the second direction X may have the same length in the first direction Y as the male terminals in the sixth row.

[0091] In some exemplary embodiments according to the present application, the male terminals in the same row or the same column in the male terminal array may be regularly arranged in other ways. In some examples, the male terminals in the male terminal array may also be arranged such that every other row or every other column has the same size and configuration.

[0092] Optionally, those skilled in the art can understand that in some exemplary embodiments according to the present application, the lengths of the male seat terminals 11 arranged in the same row or the same column in the male seat terminal array in the first direction Y can be different from each other (not shown).

[0093] In some exemplary embodiments according to the present application, as Figure 6 shown, the male seat terminal 11 can be formed into a straight columnar member. In some examples, the male seat terminal 11 can include a male seat terminal proximal end 110, a male seat terminal distal end 111, and an intermediate connecting portion 112 connecting the male seat terminal proximal end 110 and the male seat terminal distal end 111. The outer contour dimension W1 of the male seat terminal distal end 111 in the second direction X can be smaller than the outer contour dimension W2 of the male seat terminal proximal end 110 in the second direction X.

[0094] Optionally, in some examples, the outer contour dimension of the male seat terminal distal end 111 in the third direction Z can be smaller than the outer contour dimension of the male seat terminal proximal end 110 in the third direction Z (not shown).

[0095] In some exemplary embodiments according to the present application, as Figure 7 shown, the male seat terminal can be formed into a curved columnar member. The same as the case where the male seat terminal is formed into a straight columnar member, the outer contour dimension of the male seat terminal distal end 111 in the second direction X can be smaller than the outer contour dimension of the male seat terminal proximal end 110 in the second direction X, and optionally, the outer contour dimension of the male seat terminal distal end 111 in the third direction Z is smaller than the outer contour dimension of the male seat terminal proximal end 110 in the third direction Z.

[0096] In some exemplary embodiments according to the present application, the straight male seat terminal is applicable to the case where the male seat connector has a smaller size in the first direction Y, and the curved male seat terminal is applicable to the case where the male seat connector has a larger size in the first direction Y. Alternatively, the straight male seat terminal and the curved male seat terminal can be applied together in the male seat connector. This curved design of the intermediate connecting portion of the curved male seat terminal enables sharing the same printed circuit board with the straight male seat terminal, thereby providing sufficient terminal strength for the male seat connector.

[0097] In some exemplary embodiments according to the present application, as Figure 4 and Figure 5 and in combination with Figure 3BAs shown, the male seat accommodating member 12 of the male seat connector 10 may include a male seat accommodating member base 13. The male seat accommodating member base 13 may include a plurality of male seat accommodating member through holes 14 arranged in the form of an array identical to the male seat terminal array. Each male seat terminal 11 of the male seat connector 10 may extend through a corresponding one of the plurality of male seat accommodating member through holes 14, respectively, so that the male seat terminal distal end portion 111 of each male seat terminal 11 extends beyond the distal side surface 121 of the male seat accommodating member base 13, and the male seat terminal proximal end portion 110 of each male seat terminal extends beyond the proximal side surface 120 of the male seat accommodating member base 13. The male seat terminal distal end portion 111 extending beyond the distal side surface 121 of the male seat accommodating member base 13 is connected to the female seat terminal, and the male seat terminal proximal end portion 110 extending beyond the proximal side surface 120 of the male seat accommodating member base 13 is connected to the printed circuit board. It should be noted that, for the sake of simplicity, Figure 2 , Figure 4 and Figure 5 Only some of the plurality of male socket receiving part through holes are shown. The male socket terminal 11 passes through the male socket receiving part through hole 14 and is formed into an integral piece with the male socket receiving part 12 .

[0098] In some exemplary embodiments according to the present application, Figure 3C and Figure 8C As shown, the male seat accommodating part through hole 14 of the male seat accommodating part base 13 of the male seat accommodating part 12 of the male seat connector 10 may include a male seat accommodating part through hole distal end portion 140 for accommodating the male seat terminal distal end portion 111 in a form-fitting manner and a male seat accommodating part through hole proximal end portion 141 for accommodating the male seat terminal proximal end portion 110 in a form-fitting manner, and the dimension D1 of the male seat accommodating part through hole distal end portion 140 in the second direction X is smaller than the dimension D2 of the male seat accommodating part through hole proximal end portion 141 in the second direction X. In some exemplary embodiments, the dimension of the male seat accommodating part through hole distal end portion 140 in the third direction Z is smaller than the dimension of the male seat accommodating part through hole proximal end portion 141 in the third direction Z.

[0099] It should be understood that the term "form-fit" used in the present application refers to a relationship in which two mutually cooperating parts abut against each other and are tightly combined in terms of shape and position.

[0100] Those skilled in the art will appreciate that, since the dimension D1 of the distal end portion 140 of the male seat accommodating component through hole in the second direction X is smaller than the dimension D2 of the proximal end portion 141 of the male seat accommodating component through hole in the second direction X, good support is provided for the male seat terminal whose distal end portion also has a smaller dimension than the proximal end portion in the second direction X.

[0101] In some exemplary embodiments according to the present application, reference Figure 6 andFigure 7 in combination with Figure 3C , the proximal end portion 110 of the male socket terminal may include at least one protrusion 1120 extending and protruding along the second direction X from opposite sides of the proximal end portion of the proximal end portion 110 of the male socket terminal. The protrusion 1120 may be configured to taper from the proximal end side of the proximal end portion of the male socket terminal toward the distal end side of the male socket terminal along the first direction Y. When the proximal end portion 110 of the male socket terminal is received in the proximal end portion 141 of the through hole of the male socket housing, the protrusion 1120 abuts against two inner side surfaces of the proximal end portion 141 of the through hole of the male socket housing that are opposite to each other in the second direction X, thereby forming an interference fit with the proximal end portion 141 of the through hole of the male socket housing, so that the male socket terminal 11 can be stably received in the through hole 14 of the male socket housing, thus preventing the male socket terminal 11 from being accidentally pulled out of the through hole 14 of the male socket housing.

[0102] In some exemplary embodiments according to the present application, the intermediate connecting portion 112 may include a bent portion ( Figure 7 ), the bent portion may be configured to extend between the proximal end portion 110 of the male socket terminal and the distal end portion 111 of the male socket terminal so that the central axis L1 extending along the first direction Y of the proximal end portion 110 of the male socket terminal and the central axis L2 extending along the first direction Y of the distal end portion 111 of the male socket terminal are offset from each other by a certain distance L in the third direction Z. When the male socket terminal 11 is received in the through hole 14 of the male socket housing, the outer side surface of the proximal end portion 110 of the male socket terminal that is far from the central axis L1 of the proximal end portion 110 of the male socket terminal in the third direction Z abuts against the inner side surface of the proximal end portion 141 of the through hole of the male socket housing in the third direction Z ( Figure 8C ). Thus, the proximal end portion 141 of the through hole of the male socket housing can provide stable support for the proximal end portion 110 of the male socket terminal, so that the male socket terminal 11 can be stably received in the through hole 14 of the male socket housing. In some examples, the distance by which the central axis L1 of the proximal end portion 110 of the male socket terminal and the central axis L2 of the distal end portion 111 of the male socket terminal are offset from each other in the third direction Z is approximately equal to half of the difference between the dimension of the proximal end portion 141 of the through hole of the male socket housing in the third direction Z and the dimension of the distal end portion 140 of the through hole of the male socket housing in the third direction Z.

[0103] In some examples, the bent portion of the intermediate connecting portion 112 may be formed by permanent deformation. Those skilled in the art can understand that in order to ensure that the dimensions of each proximal end portion 110 of the male socket terminal extending beyond the proximal side surface 120 of the base portion 13 of the male socket housing are consistent, the dimensions of each male socket terminal of the plurality of male socket terminals from the intermediate connecting portion to the proximal end of the proximal end portion of the male socket terminal are configured to be consistent.

[0104] In addition, those skilled in the art can also understand that the bent portion of the intermediate connecting portion 112 can also be used as a stopper, so that when the male terminal 11 is inserted into the through hole 14 of the male housing member, the proximal end portion 110 of the male terminal abuts against the inner surface of the proximal end portion 141 of the through hole of the male housing member due to the bent portion, thereby preventing the male terminal 11 from being excessively inserted into the through hole 14 of the male housing member, and further avoiding the extension of the distal end portion 111 of the male terminal beyond the distal side surface 110 of the base portion 13 of the male housing member by a size exceeding a preset size, such as Figure 8C shown.

[0105] Although in the illustrated embodiment, the protruding portion 1120 extends and protrudes along the second direction X, and / or the central axis L1 of the proximal end portion 110 of the male terminal is offset from the central axis L2 of the distal end portion 111 of the male terminal in the third direction Z, those skilled in the art can understand that the protruding portion 1120 can be configured to extend and protrude along the third direction Z, and / or the central axis L1 of the proximal end portion 110 of the male terminal is offset from the central axis L2 of the distal end portion 111 of the male terminal in the second direction X. In addition, those skilled in the art can also understand that in the case where the male terminals have the same configuration, the use requirements of different male connectors can be met by adjusting / changing the arrangement orientation of the male terminals. For example, based on the illustrated embodiment, each male terminal in the male terminal array can be uniformly rotated 90 degrees or 180 degrees in the clockwise or counterclockwise direction according to the use requirements of different male connectors. Those skilled in the art can understand that such a modification in the arrangement manner can still solve the technical problems to be solved by the present application and achieve the expected technical effects, and thus such a variation or modification is still within the protection scope of the present application.

[0106] In some exemplary embodiments according to the present application, referring to Figure 4 and Figure 5 , the male housing member 12 of the male connector 10 may include a male housing member side wall 126 extending along the first direction Y from the outer peripheral edge of the base portion 13 of the male housing member. The male housing member side wall 126 is integrally formed with the base portion 13 of the male housing member, and the dimension of the male housing member side wall 126 in the first direction Y is greater than the dimension of the portion of the male terminal 14 extending beyond the distal side surface 121 of the base portion 13 of the male housing member.

[0107] In some examples, the male housing member side wall 126 can be integrally formed with the base portion 13 of the male housing member by injection molding. This manufacturing method has a simple process and can conveniently change the shape of the housing according to needs to adapt to various installation requirements, so that it can be customized according to user needs to improve production flexibility and significantly reduce the manufacturing cost.

[0108] According to another aspect of the present application, a female connector is provided. Refer to Figures 9 to 13 . In some exemplary embodiments according to the present application, the female connector 20 has: a first direction Y defining the thickness (height) extension direction of the female connector; a second direction X perpendicular to the first direction Y defining the width dimension of the female connector; and a third direction Z defining the longitudinal extension direction of the female connector, the third direction Z being perpendicular to the first direction Y and the second direction X respectively. The female connector 20 may include a plurality of female terminals 21 arranged in a female terminal array and a female accommodating member 22 for accommodating the female terminals 21. In the female terminal array, the female terminals 21 are arranged in rows along the second direction X and in columns along the third direction Z.

[0109] Those skilled in the art can understand that the first direction Y of the female connector can also be referred to as the thickness direction or height direction of the female connector, the second direction X of the female connector can also be referred to as the width direction of the female connector, and the third direction Z of the female connector can also be referred to as the length direction of the female connector.

[0110] In some exemplary embodiments according to the present application, refer to Figure 11B , the size of each female terminal among the plurality of female terminals 21 in the first direction Y can be the same. This facilitates the mating of the male connector and the female connector.

[0111] Alternatively, in some other exemplary embodiments according to the present application, the lengths of the female terminals arranged in the same row or the same column in the female terminal array in the first direction can be the same, and the lengths of the female terminals in adjacent rows or adjacent columns in the female terminal array in the first direction can be different.

[0112] In some exemplary embodiments according to the present application, refer to Figure 13 , the female terminals 21 of the female connector 20 may include a female terminal proximal end portion 210 and a female terminal distal end portion 211. The female terminal proximal end portion 210 can be formed into a plate-like portion to provide sufficient strength for the connection between the female terminal and the printed circuit board and the connection between the female terminal and the male terminal. The female terminal distal end portion 211 may include a pair of leg-like portions protruding from the distal end portion of the female terminal proximal end portion 210. The pair of leg-like portions may include a first leg-like portion 2110 and a second leg-like portion 2111. The first leg-like portion 2110 and the second leg-like portion 2111 can be formed such that they are spaced apart at a portion adjacent to the female terminal proximal end portion 210 and approach each other at the free end portion away from the female terminal proximal end portion 210 to form a clamping portion. When the male connector is connected to the female connector, the male terminal distal end portion 111 of the male terminal 11 is inserted into the clamping portion of the female terminal to form an electrical connection.

[0113] In some exemplary embodiments according to the present application, with reference to Figure 13 , the first leg portion 2110 may include a first leg proximal end portion 2113 adjacent to the proximal end portion 210 of the female socket terminal and a first leg distal end portion 2112 away from the proximal end portion 210 of the female socket terminal. The second leg portion 2111 may include a second leg proximal end portion 2115 adjacent to the proximal end portion 210 of the female socket terminal and a second leg distal end portion 2114 away from the proximal end portion 210 of the female socket terminal. The distance between the first leg distal end portion 2112 and the second leg distal end portion 2114 is less than the distance between the first leg proximal end portion 2113 and the second leg proximal end portion 2115. When the male socket terminal 11 of the male socket connector 10 is inserted into the female socket terminal of the female socket connector 20, the distance between the first leg distal end portion 2112 and the second leg distal end portion 2114 gradually increases, thereby providing reliable stability for the connection between the male socket connector and the female socket connector.

[0114] In some exemplary embodiments according to the present application, still with reference to Figure 13 , the first leg distal end portion 2112 may include a first flat plate portion 2118 continuous with the first leg proximal end portion 2113 and a first spiral portion 2116 spirally extending from the first flat plate portion 2118 along a first spiral direction and gradually away from the first flat plate portion 2118. The first flat plate portion 2118 is in the same plane as the first leg proximal end portion 2113, and the first spiral portion 2116 is formed by twisting the first flat plate portion 2118 outwardly and upwardly. As can be seen from Figure 13 , the first spiral portion 2116 may be formed in a wavy shape, thereby forming a protrusion at the center of the first spiral portion 2116.

[0115] In some exemplary embodiments according to the present application, as Figure 13 shown, the second leg distal end portion 2114 may include a second flat plate portion 2119 continuous with the second leg proximal end portion 2115 and a second spiral portion 2117 spirally extending from the second flat plate portion 2119 along a second spiral direction opposite to the first spiral direction and gradually away from the second flat plate portion 2119. The second flat plate portion 2119 is in the same plane as the second leg proximal end portion 2115, and the second spiral portion 2117 is formed by twisting the second flat plate outwardly and upwardly. Similarly, as can be seen from Figure 13 , the second spiral portion 2117 may also be formed in a wavy shape, thereby forming a protrusion at the center of the second spiral portion 2117.

[0116] In some exemplary embodiments according to the present application, the first helical portion 2116 and the second helical portion 2117 are configured to be spaced apart from each other and face each other, and the distance between the first helical portion 2116 and the second helical portion 2117 is less than the distance between the proximal end portion 2113 of the first leg portion and the proximal end portion 2115 of the second leg portion, thereby forming a clamping portion. When the male seat terminal is inserted into the female seat terminal, the distal end portion 111 of the male seat terminal contacts the protrusions of the first helical portion 2116 and the protrusions of the second helical portion 2117 simultaneously, thereby providing reliability for the connection between the male seat connector 10 and the female seat connector 20.

[0117] In some examples of the exemplary embodiments according to the present application, referring to Figure 9 and Figure 12 and in combination with Figure 11B , the female seat housing 22 of the female seat connector 20 may include a female seat housing base 23. The female seat housing base 23 may include a plurality of female seat housing through holes 24 arranged in the same array form as the female seat terminal array. Each female seat terminal of the female seat connector 20 is respectively received in a corresponding one of the plurality of female seat housing through holes 24, such that the distal end portion 211 of each female seat terminal 21 is not visible from the distal side surface 230 of the female seat housing base, and the proximal end portion 210 of each female seat terminal 21 extends beyond the proximal side surface 220 of the female seat housing base 23. It should be noted that in Figure 12 , for simplicity, only some of the plurality of female seat housing through holes are schematically shown.

[0118] In some exemplary embodiments according to the present application, as can be seen from Figure 11B , the distal end portion 211 of the female seat terminal 21 is spaced apart from the distal side surface 230 of the female seat housing base 23 by a certain distance, such that the distal end portion 211 of the female seat terminal 21 is not visible from the distal side surface 230 of the female seat housing base, that is, the female seat terminal 21 is not visible when observed from the outside of the female seat connector 20.

[0119] Alternatively, the female seat terminals of the female seat connector may be configured to have other suitable shapes adapted to engage with the distal end portion of the male seat terminal. For example, in some examples, the distal end portion of the female seat terminal for contacting the distal end portion of the male seat terminal may be formed as a straight rod-shaped portion.

[0120] According to another aspect of the present application, an electrical connector assembly is provided, referring to Figures 14 to 19. In some embodiments according to the present application, the electrical connector assembly 100 may include the male connector 10 and the female connector 20 provided in the above embodiments, which are arranged in pairs. In a state where the male connector 10 and the female connector 20 are engaged with each other, the distal side surface 121 of the male receptacle base 13 and the distal side surface 230 of the female receptacle base 23 face each other in the first direction Y, so that a plurality of male terminals 11 arranged in a male terminal array can be engaged with a plurality of female terminals 21 arranged in a female terminal array in a one-to-one correspondence to form an electrical connection.

[0121] Those skilled in the art can understand that in a state where the male connector 10 and the female connector 20 are engaged with each other, the first direction of the male connector (i.e., the thickness direction or the height direction of the male connector) is consistent with the first direction of the female connector (i.e., the thickness direction or the height direction of the female connector), the second direction of the male connector (i.e., the width direction of the male connector) is consistent with the second direction of the female connector (i.e., the width direction of the female connector), and the third direction of the male connector (i.e., the length direction of the male connector) is consistent with the length direction of the female connector (i.e., the length direction of the female connector).

[0122] As described above, the lengths of the adjacent two rows or adjacent two columns of the male terminals in the male terminal array of the male connector 10 in the first direction Y may be different from each other. Thus, the forces when connecting the male connector 10 to the female connector 20 and when disassembling the male connector 10 from the female connector 20 can act on the male terminals 11 at different times, so that the connection force / disassembly force can be dispersed throughout the connection / disassembly process, and a large force will not be generated on the male terminals simultaneously, thereby reducing the force that the user needs to apply when connecting / disassembling the male connector and the female connector and reducing the difficulty of connecting / disassembling the male connector and the female connector.

[0123] In some exemplary embodiments according to the present application, as Figure 17BAs shown, in the state where the male connector 10 is engaged with the female connector 20, the distal end portion 111 of each male terminal of the male connector 10 is inserted into a corresponding one of the plurality of female housing through holes 24 of the female housing 22 of the female connector 10 along the first direction Y, and is engaged with the distal end portion 211 of the female terminal 21 accommodated in the corresponding female housing through hole to form an electrical connection. More specifically, the distal end portion 111 of the male terminal is engaged with the first helical portion 2116 and the second helical portion 2117 of the distal end portion 211 of the female terminal and is clamped between the first helical portion 2116 and the second helical portion 2117. Those skilled in the art can understand that the first helical portion 2116 and the second helical portion 2117 of the distal end portion 211 of the female terminal simultaneously contact and clamp the distal end portion 111 of the male terminal, which provides reliability for the connection between the male connector 10 and the female connector 20, thereby preventing the male terminal from being accidentally pulled out.

[0124] It can be understood that the term "distal end" used in the description of the present application refers to the side where the female connector and the male connector face each other when the female connector is connected to the male connector, and the term "proximal end" refers to the side away from the male connector and the male connector when the female connector is connected to the male connector.

[0125] In some exemplary embodiments according to the present application, the male housing 12 and the female housing 22 respectively include positioning feature portions for forming a form-fit in the state where the male connector 10 is engaged with the female connector 20. The male housing 12 and the female housing 22 are engaged through the corresponding positioning feature portions, thereby preventing the problem of mating orientation flipping / misalignment when the male connector 10 and the female connector 20 are mated, and thus providing guidance for the mating of the male connector 10 and the female connector 20.

[0126] In some exemplary embodiments according to the present application, referring to Figure 4 and Figure 5 , the side wall 126 of the male housing 12 of the male housing 12 may include a first end wall 138 and a second end wall 139 that are opposite to each other in the third direction Z. The positioning feature portion for the male housing 12 may include a male housing base recess 131, and the male housing base recesses 131 are respectively formed at two opposite end portions of the distal side surface 121 of the male housing base 13 of the male connector 10 in the third direction Z. The first end wall 138, the second end wall 139 and the corresponding male housing base recess 131 together form a groove 150( Figure 18 ). Referring to Figure 9 and Figure 12, the positioning feature portions for the female receptacle member 22 may include a third end wall 251 and a fourth end wall 252 disposed at opposite ends of the base portion 23 of the female receptacle member along the third direction Z. The third end wall 251 and the fourth end wall 252 are configured to extend beyond the distal side surface 230 of the base portion 23 of the female receptacle member along the first direction Y, such that: in a state where the male connector 10 is engaged with the female connector 20, the third end wall 251 and the fourth end wall 252 are respectively inserted into the corresponding slots 150, as Figure 18 shown. When the male connector 10 is mated with the female connector 20, the third end arm 251 and the fourth end arm 252 are first inserted into the slots 150. Therefore, the third end arm 251 and the fourth end arm 252 provide guidance for the mating of the male connector 10 and the female connector 20.

[0127] In some exemplary embodiments according to the present application, still referring to Figure 4 and Figure 5 , the side wall 126 of the male receptacle member may include a first side wall 122 and a second side wall 123 that are opposite to each other in the second direction X. The positioning feature portion may further include first side wall recessed portions 1221 respectively disposed at opposite ends of the first side wall 122 in the third direction Z, and first side wall protruding portions 124 that protrude toward the inside of the male receptacle member 12 and are respectively disposed between the two first side wall recessed portions 1221 adjacent to the corresponding one of the two first side wall recessed portions 1221. That is to say, the positioning feature portion for the male receptacle member 12 may further include the first side wall recessed portions 1221 and the first side wall protruding portions 124. Alternatively, the first side wall protruding portions may also be arranged to be spaced apart from the first side wall recessed portions 1221.

[0128] In some exemplary embodiments according to the present application, referring to Figure 9 and Figure 12 , on the side of the third end wall 251 and the fourth end wall 252 of the female receptacle member 22 corresponding to the first side wall 122 of the male receptacle member 12 in the second direction X, third end wall protruding portions 2511 and fourth end wall protruding portions 2521 that extend beyond the side surface of the base portion 23 of the female receptacle member along the second direction X are respectively provided. That is to say, the positioning feature portion for the female receptacle member 22 may further include the third end wall protruding portions 2511 and the fourth end wall protruding portions 2521.

[0129] In some exemplary embodiments according to the present application, referring to Figure 19, in a state where the male connector 10 is engaged with the female connector 20, the third end wall protrusion 2511 and the fourth end wall protrusion 2521 of the female housing member 22 of the female connector 20 are respectively engaged in a form - fit manner with corresponding first side wall recesses 1221 provided in the first side wall 122 of the male connector 10, and the first side wall protrusion 124 abuts against a portion of the side surface of the female housing member 22 where the third end wall protrusion 2511 and the fourth end wall protrusion 2521 are not provided.

[0130] In some exemplary embodiments according to the present application, referring to Figure 4 , Figure 5 and Figure 19 , the positioning feature may further include second side wall protrusions 125 respectively provided at opposite two ends of the second side wall 123 in the third direction Z and protruding toward the inside of the male housing member 12. In a state where the male connector 10 is engaged with the female connector 20, the second side wall protrusions 125 are engaged with the side surface of the female housing member 22 of the female connector 20 where the third end wall protrusion 2511 and the fourth end wall protrusion 2521 are not provided. In this case, when the male connector 10 and the female connector 20 are in an assembled state, the male housing member of the male connector 10 contacts the female housing member 22 of the female connector 20 through the second side wall protrusions 125 and the first side wall protrusions 124, so that the mating of the male connector 10 and the female connector 20 can be achieved only in the correct orientation.

[0131] In some exemplary embodiments according to the present application, the distance between the third end wall 251 and the fourth end wall 252 of the female housing member 22 of the female connector 20 is slightly greater than the distance between the first end wall 138 and the second end wall 139 of the male connector 10, so that: when the male connector 10 and the female connector 20 are mated, the corresponding male terminals can be inserted into the corresponding female terminals, thereby preventing misconnection between the male terminals and the female terminals, and thus preventing damage to the male connector and the female connector.

[0132] In some examples, each of the male housing member and the female housing member is made of a heat - resistant electrical insulating material.

[0133] According to another aspect of the present application, a board - to - board electrical connection device is provided. Referring to Figures 20 to 28C。In some exemplary embodiments, the electrical connection device 200 may include a pair of printed circuit boards 60 and the electrical connector assembly 100 provided according to the above aspects. The pair of printed circuit boards 60 are respectively coupled to the male connector 10 and the female connector 20 in the electrical connector assembly 100. In a state where the male connector 10 and the female connector 20 are engaged, the pair of printed circuit boards 60 are electrically connected to each other and form a configuration that is substantially parallel to each other.

[0134] In some exemplary embodiments according to the present application, the proximal end portion 110 of each male terminal 11 of the male connector 10 may extend beyond the proximal side surface 120 of the male housing base 13 of the male housing 12 and be connected to one of the pair of printed circuit boards 60, and the proximal end portion 210 of each female terminal 21 of the female connector 20 may extend beyond the proximal side surface 220 of the female housing base 23 of the female housing 22 and be connected to the other of the pair of printed circuit boards 60, as Figure 22 and Figure 25 shown.

[0135] In some exemplary embodiments according to the present application, the proximal end portion 110 of the male terminal 11 that extends beyond the proximal side surface 120 of the male housing base 13 may be formed to have an L-shaped bending portion 1101 ( Figure 7 ), and the proximal end portion 210 of the female terminal 21 that extends beyond the proximal side surface 220 of the female housing base 23 may be formed to have an L-shaped bending portion 2101 ( Figure 13 ). The L-shaped bending portion 1101 of the male terminal 11 may be connected to the contact portion 61 of the printed circuit board 60, and the L-shaped bending portion 2101 of the female terminal 21 may be connected to the contact portion 61 of the other printed circuit board. In some examples, the L-shaped bending portion 1101 of the male terminal 11 and / or the L-shaped bending portion 2101 of the female terminal 21 may be formed by first thinning the proximal end portion of the male terminal 11 and / or the female terminal 21 and then bending it. The L-shaped bending portion 1101 of the male terminal 11 and / or the L-shaped bending portion 2101 of the female terminal 21 increase the contact area for connection with the corresponding printed circuit board, thereby increasing the connection strength with the corresponding printed circuit board and ensuring the reliability of the board-to-board electrical connection device. In addition, the L-shaped bending portion 1101 of the male terminal 11 and / or the L-shaped bending portion 2101 of the female terminal 21 are directly soldered to the contact portion of the corresponding printed circuit board, without the need to use additional solder balls to solder the male terminal 11 and / or the female terminal 21 to the corresponding printed circuit board, thereby making the board-to-board electrical connection device easier to manufacture and reducing the manufacturing cost.

[0136] In some exemplary embodiments according to the present application, referring toFigure 23 and Figure 26 The male connector 10 may further include a first housing 40 sleeved on the side wall 126 of the male housing 12, and the female connector 10 may further include a second housing 50 sleeved on the outer side of the base 23 of the female housing 22. In some examples, the first housing 40 and the second housing 50 are made of metal. Preferably, in some examples, the first housing 40 and the second housing 50 are made of iron. When the first housing and the second housing are respectively sleeved on the male connector and the female connector, and the male connector and the female connector in the connected state are respectively connected to the printed circuit board, the board-to-board electrical connection device not only realizes electrical connection, but also has the ability to transmit a relatively large current due to the arrangement of the first housing and / or the second housing. Therefore, there is no need to use an additional dedicated connector for current transmission, thus saving space and reducing costs.

[0137] In some exemplary embodiments according to the present application, referring to Figure 23 and Figure 24 The first housing 40 may include: a first portion 41 sleeved on the first end wall 138, a second portion 42 sleeved on the second end wall 139, a third portion 43 sleeved on the first side wall 122, and a fourth portion 44 sleeved on the second side wall 123. The first portion 41, the second portion 42, the third portion 43, and the fourth portion 44 are all formed as U-shaped members having a long side portion 425 and a short side portion 430 and having open ends in the direction of the proximal side facing the base 13 of the male housing along the first direction Y. The first portion 41, the second portion 42, the third portion 43, and the fourth portion 44 are respectively detachably sleeved on the first end wall 138, the second end wall 139, the first side wall 122, and the second side wall 123 via the open ends, such that the long side portion 425 of the U-shaped member engages with the outer surfaces of the first end wall 138, the second end wall 139, the first side wall 122, and the second side wall 123, while the short side portion of the U-shaped member engages with the inner surfaces of the first end wall 138, the second end wall 139, the first side wall 122, and the second side wall 123 facing the inside of the male housing. The first portion 41, the second portion 42, the third portion 43, and the fourth portion 44 have corresponding lengths according to the lengths of the first end wall 138, the second end wall 139, the first side wall 122, and the second side wall 123 and have the same configuration. Therefore, the first housing can be manufactured in a modular manner, and a suitable first housing can be cut according to the lengths of the first end wall 138, the second end wall 139, the first side wall 122, and the second side wall 123, thereby saving manufacturing costs and ensuring the consistency and stability of the first housing for holding the male connector.

[0138] In some other exemplary embodiments according to the present application, still referring to Figure 23 andFigure 24 , at the edge of the long side portion 425 of the U-shaped member forming the first part 41, the second part 42, the third part 43, and the fourth part 44 of the first housing 40, near the proximal side surface 120 of the base portion 13 of the female seat accommodating member, there may be provided a plurality of first straight extension portions 421 and a plurality of first bending portions 422 alternately arranged. The first bending portion 422 may include a first straight portion 424 disposed in the same plane as the first straight extension portion 421 and a first bent portion 423 connected to the first straight portion 424. In the direction of the proximal side of the base portion 13 of the female seat accommodating member along the first direction, the end surface of the first straight extension portion 421 is flush with the end surface of the first bent portion 423 of the first bending portion 422, and the outer peripheral edge of the distal side surface 121 of the base portion 13 of the female seat accommodating member may include a plurality of first lugs 132 with first orifices 133. In the state where the first housing 40 is sleeved on the side wall 126 of the female seat accommodating member, the first bending portion 422 may be disposed between two adjacent first lugs 132 or the first lugs 132 may be disposed between two adjacent first bending portions 422. The first straight extension portion 421 of the first housing 40 may be inserted through the first orifice 133 in the first lug 132 and extend beyond the proximal side surface 120 of the base portion 13 of the female seat accommodating member (see Figure 22 the enlarged view of the detail P in). And, the dimension that the first straight extension portion 421 extends beyond the proximal side surface 120 of the base portion 13 of the female seat accommodating member may be the same as the dimension that the proximal end portion 110 of the male seat terminal 11 extends beyond the proximal side surface 120 of the base portion 13 of the female seat accommodating member, so that the profile end surfaces of the proximal end portion 110 of the male seat terminal, the first straight extension portion 421, and the first bent portion 423 are flush in the direction of the proximal side of the base portion 13 of the female seat accommodating member along the first direction Y, so that the proximal end portion 110 of the male seat terminal and the first housing can be simultaneously connected to the contact portion 61 of the printed circuit board 60. In some examples, the proximal end portion 110 of the male seat terminal, the straight extension portion 421 of the first housing, and the first bent portion 423 are simultaneously welded to the contact portion 61 of the printed circuit board 60, thereby enhancing the connection reliability between the male seat terminal 10 and the printed circuit board 60 and between the first housing 40 and the printed circuit board 60.

[0139] In some other exemplary embodiments according to the present application, as Figure 22 shown, the first housing 40 is connected to one of the pair of printed circuit boards 60 in the direction of the proximal side of the base portion 13 of the female seat accommodating member along the first direction Y through the end surface of the first bent portion 423 of the first straight extension portion 421 and the first bending portion 422, thereby ensuring the connection stability between the male seat connector 10 and the printed circuit board.

[0140] In some exemplary embodiments according to the present application, as Figure 23 and Figure 24 in combination with Figure 28C shown, the short side portions of the U-shaped members constituting the first part 41, the second part 42, the third part 43, and the fourth part 44 of the first housing 40 are configured as elastically deformable members, such that in a state where the male connector 10 is engaged with the female connector 20, the short side portions of the U-shaped members constituting the first part 41, the second part 42, the third part 43, and the fourth part 44 of the first housing 40 respectively abut against the outer surface of the female housing member base 23 of the female connector 20 and apply a biasing force to the female connector 20 toward the inside of the male housing member 12 of the male connector 10.

[0141] In some exemplary embodiments according to the present application, as Figure 24 shown, the short side portions of the U-shaped members constituting the first part 41, the second part 42, the third part 43, and the fourth part 44 of the first housing 40 include a plurality of short side segments 430 that are spaced apart from each other and extend in a direction toward the proximal side of the male housing member base 13 along the first direction Y. Each of the plurality of short side segments 430 is connected to the long side portion 425 of the U-shaped member through a corresponding intermediate connection portion 431. Each short side segment 430 includes a frame portion 429 and an elastic overhanging portion 433. One end of the elastic overhanging portion 433 is connected to the frame portion 429, and the other end of the elastic overhanging portion 433 is separated from the frame portion 429 along the first direction Y to form a free end portion 432. And the free end portion 432 of the elastic overhanging portion 433 is bent to protrude toward the inside of the male housing member 12, such that in a state where the male connector 10 is engaged with the female connector 20, the elastic overhanging portion 433 of each short side segment 430 abuts against the outer surface of the female housing member base 23 of the female connector 20 and applies a biasing force to the female connector 20 toward the inside of the male housing member 12 of the male connector 10, as Figure 28C shown.

[0142] In some exemplary embodiments according to the present application, referring to Figure 5 , the inner surface 127 of the male housing member side wall 126 of the male housing member 12 of the male connector 10 may include a plurality of side wall grooves 128 and a plurality of side wall protrusions 129, and the plurality of side wall grooves 128 and the plurality of side wall protrusions 129 are alternately arranged. The male housing member base 13 of the male housing member 12 of the male connector 10 may include a plurality of receiving portions 135, and the plurality of receiving portions 135 are provided corresponding to the plurality of side wall grooves 128. The receiving portions 135 are recessed from the distal side surface 121 of the male housing member base 13 toward the proximal side of the male housing member base 13 along the first direction Y.

[0143] In some other exemplary embodiments according to the present application, Figure 24 As shown, the end portion of each short side segment 430 opposite to the middle connecting portion 431 may include a tip protrusion 428, and the tip protrusion 428 is aligned with the elastic overhang portion 433 of the short side segment 430 in the first direction Y, so that: when the first shell 40 is sleeved onto the side wall 126 of the male seat accommodating component, the elastic overhang portion 433 of the short side segment 430 can be aligned with the side wall groove 128 set on the inner surface 127 of the side wall 126 of the male seat accommodating component, and the tip protrusion 428 can be accommodated in the receiving portion 135 corresponding to the groove 128, thereby increasing the connection stability between the first shell and the male seat connector.

[0144] exist Figure 24 In the embodiment, the elastic overhang portion 433 and the tip protrusion 428 may be respectively arranged on opposite sides of one side of the frame portion 429, that is, the elastic overhang portion 433 may extend obliquely toward the inside of the male seat accommodating part of the male seat connector from the proximal side of the frame portion 429 along the first direction Y away from the proximal side of the male seat accommodating part base, and the tip protrusion 428 extends from the proximal side of the frame portion 429 along the first direction Y toward the proximal side of the male seat accommodating part base. Alternatively, the elastic overhang portion 433 may extend obliquely toward the inside of the male seat accommodating part of the male seat connector from the distal side of the frame portion 429 along the first direction toward the proximal side of the male seat accommodating part base, and in a state where the first housing 40 is sleeved onto the male seat accommodating part side wall 126, the elastic overhang portion 433 of the short side segment 430 is aligned with the side wall groove 128 arranged on the inner side surface 127 of the male seat accommodating part side wall 126. In this way, the first shell is connected to the male socket accommodating part and the printed circuit board of the male socket connector through the tip protrusion 428, the first straight extension portion 421 and the first bent portion 422, so that the first shell, the male socket connector and the printed circuit board are firmly held, thereby improving the stability of the electrical connection device.

[0145] In some other exemplary embodiments according to the present application, Figure 24 As shown, the central portion of the free end 432 of the elastic cantilever portion 433 may include a cantilever arm recess 426, so that a pair of cantilever arm contact portions 427 are formed at the free end 432 of the elastic cantilever portion 433. When the first housing 40 is sleeved onto the male seat receiving part side wall 126, the cantilever arm contact portions 427 may abut against the outer surface of the female seat receiving part base 23 of the female connector 20 and apply a biasing force to the female connector 20 toward the inside of the male seat receiving part 12 of the male connector 10, as shown in FIG. Figure 28CAs shown. When the male connector 10 and the female connector 20 are connected to each other, only the paired cantilever contact portions 427 can abut against the second housing of the female receptacle base 23, thereby realizing the ability to transmit a relatively large current while ensuring that the male connector 10 contacts the female connector 20.

[0146] In some other exemplary embodiments according to the present application, referring to Figures 25 to 27 , the second housing 50 may include: a third end wall housing 53 and a fourth end wall housing 54 that are respectively sleeved on the outer sides of the third end wall 251 and the fourth end wall 252 of the female receptacle base 23 of the female receptacle 22 in the third direction Z in a detachable manner; and a third side housing 55 and a fourth side housing 56 that are respectively sleeved on the outer sides of the third side portion 28 and the fourth side portion 29 of the female receptacle base 23 of the female receptacle 22 in the second direction X in a detachable manner. Each of the third end wall housing 53, the fourth end wall housing 54, the third side housing 55, and the fourth side housing 56 includes a housing fixing portion 550 configured to engage with the edge of the distal side surface 230 of the female receptacle base 23 and a housing attachment portion 51 configured to be adjacent to the proximal side surface 220 of the female receptacle base 23.

[0147] In some exemplary embodiments according to the present application, referring to Figure 25 and Figure 26 , the edge of the distal side surface 230 of the female receptacle base 23 may include fixed recesses 2301 that are spaced apart. Referring to Figure 27 , the housing fixing portion 550 may include a plurality of abutting portions 5501 and a plurality of fixed mounting portions 5502 that are alternately arranged. The fixed mounting portions 5502 may be configured to bend towards the female receptacle base 23 and engage into the fixed recesses 2301. Optionally, the abutting portions 5501 bend towards the female receptacle base 23 and abut against the edge of the distal side surface 230 of the female receptacle base 23.

[0148] In some exemplary embodiments according to the present application, referring to Figure 25 and Figure 26 , the edge of the proximal side surface 220 of the female receptacle base 23 includes a plurality of second lugs 30 that are spaced apart. Each second lug 30 may include a second orifice 31; referring to Figure 27, the housing attachment portion 51 may include a plurality of second straight extension portions 510 and a plurality of second bending portions 511 that are alternately arranged. The second bending portion 511 may include a second straight portion 513 disposed in the same plane as the second straight extension portion 510 and a second bent portion 512 connected to the second straight portion 513. In the direction along the first direction Y toward the proximal side of the base 23 of the female socket housing member, the end surface of the second straight extension portion 510 is flush with the end surface of the second bent portion 512 of the second bending portion 511; Refer to Figure 25 , in a state where the second housing 50 is sleeved on the outside of the base 23 of the female socket housing member, the second bending portion 511 may be disposed between two adjacent second lugs 30 or the second lugs 30 may be disposed between two adjacent second bending portions 511 (refer to the enlarged view of detail Q in Figure 25 ). The second straight extension portion 510 of the second housing 50 is inserted through the second orifice 31 in the second lug 30 and extends beyond the proximal side surface 220 of the base 23 of the female socket housing member. Moreover, the dimension by which the second straight extension portion 510 extends beyond the proximal side surface 220 of the base 23 of the female socket housing member is the same as the dimension by which the proximal end portion 210 of the female socket terminal 11 extends beyond the proximal side surface 220 of the base 23 of the female socket housing member, such that the proximal end portion 210 of the female socket terminal, the straight extension portion 510, and the second bent portion 512 are flush in the profile end surface extending in the direction along the first direction Y toward the proximal side of the base of the female socket housing member. Thus, the proximal end portion 210 of the female socket terminal and the second housing can be simultaneously connected to the contact portion 61 of the printed circuit board 60. In some examples, the proximal end portion 210 of the female socket terminal, the straight extension portion 510 of the second housing, and the second bent portion 512 are simultaneously welded to the contact portion 61 of the printed circuit board 60, thereby enhancing the connection reliability between the female socket terminal 10 and the printed circuit board 60 and between the second housing 50 and the printed circuit board 60.

[0149] In some other exemplary embodiments according to the present application, as shown in Figure 25 , the second housing 50 is connected to one of the pair of printed circuit boards 60 in the direction along the first direction Y toward the proximal side of the base of the female socket housing member through the end surfaces of the second straight extension portion 510 and the second bent portion 512 of the second bending portion 511, thereby ensuring the connection stability between the female socket connector 20 and the printed circuit board.

[0150] In some other exemplary embodiments according to the present application, the extension length of a corresponding one of the first part 41, the second part 42, the third part 43, and the fourth part 44 of the first housing 40 for the male connector 10 is determined according to the extension length of the side wall of the male accommodating member of the male connector, and the extension length of a corresponding one of the third end wall housing 53, the fourth end wall housing 54, the third side housing 55, and the fourth side housing 56 of the second housing 40 for the female connector 20 is also determined according to the extension length of a corresponding one of the third end wall 251, the fourth end wall 252, the third side 28, and the fourth side 29 of the base of the female accommodating member of the female connector. Therefore, the first housing 40 and the second housing 50 can be cut to corresponding lengths according to the configuration of the connector, so as to ensure the consistency of the housings for sleeving the male connector and the female connector, and ensure the stability of current transmission. In addition, since only the first housing and / or the second housing formed by a mold need to be cut to form the housings of the respective parts for the male connector and / or the female connector, only the mold for manufacturing the first housing and / or the second housing is required, thus saving the mold cost.

[0151] Although the present application has been described with reference to the exemplary embodiments, it should be understood that the present application is not limited to the specific embodiments described and illustrated in detail herein. Various changes can be made to the exemplary embodiments by those skilled in the art without departing from the scope defined by the claims of the present application.

[0152] The features mentioned and / or illustrated in the above description of the exemplary embodiments of the present application can be combined in the same or similar manner into one or more other embodiments, combined with the features in other embodiments, or replace the corresponding features in other embodiments. The technical solutions obtained by such combination or replacement should also be regarded as being included within the protection scope of the present application.

Claims

1. A male connector, wherein the male connector (10) defines: a thickness extending in a first direction (Y); a width extending in a second direction (X) perpendicular to the first direction (Y); and a length extending in a third direction (Z) perpendicular to both the first direction (Y) and the second direction (X), characterized in that, The male connector (10) includes a plurality of male terminals (11) arranged in an array of male terminals and a male housing (12) for accommodating the male terminals (11), characterized in that the lengths of two adjacent rows of male terminals arranged in the second direction (X) or two adjacent columns of male terminals arranged in the third direction (Z) in the first direction (Y) of the male connector (10) are different from each other.

2. The male connector according to claim 1, wherein, The array of male terminals includes at least three rows and / or at least three columns of male terminals. The lengths of the male terminals (11) arranged in the same row or the same column are the same in the first direction (Y), and the male terminals in the array of male terminals are arranged to have the same size and configuration every two rows or every two columns.

3. The male connector according to claim 1 or 2, characterized in that, The male terminal (11) includes a proximal end portion (110) of the male terminal, a distal end portion (111) of the male terminal, and an intermediate connecting portion (112) connecting the proximal end portion (110) of the male terminal and the distal end portion (111) of the male terminal. The outer contour dimension (W1) of the distal end portion (111) of the male terminal in the second direction (X) is smaller than the outer contour dimension (W2) of the proximal end portion (110) of the male terminal in the second direction (X).

4. The male connector according to claim 3, characterized in that, The outer contour dimension of the distal end portion (111) of the male terminal in the third direction (Z) is smaller than the outer contour dimension of the proximal end portion (110) of the male terminal in the third direction (Z).

5. The male connector according to claim 4, characterized in that, The male housing (12) of the male connector (10) includes a base portion (13) of the male housing. The base portion (13) of the male housing includes a plurality of through holes (14) of the male housing arranged in the same array form as the array of male terminals. Each male terminal in the male connector (10) extends through a corresponding one of the plurality of through holes (14) of the male housing, so that the distal end portion (111) of each male terminal (11) extends beyond the distal side surface (121) of the base portion (13) of the male housing, and the proximal end portion (110) of each male terminal extends beyond the proximal side surface (120) of the base portion (13) of the male housing.

6. The male connector according to claim 5, characterized in that The through hole (14) of the male housing includes a distal end portion (140) of the through hole of the male housing for accommodating the distal end portion (111) of the male terminal in a form-fitting manner and a proximal end portion (141) of the through hole of the male housing for accommodating the proximal end portion (110) of the male terminal in a form-fitting manner. The dimension (D1) of the distal end portion (140) of the through hole of the male housing in the second direction (X) is smaller than the dimension (D2) of the proximal end portion (141) of the through hole of the male housing in the second direction (X).

7. The male connector according to claim 6, wherein, The dimension of the distal end portion (140) of the through hole of the male housing in the third direction (Z) is smaller than the dimension of the proximal end portion (141) of the through hole of the male housing in the third direction (Z).

8. The male connector according to claim 6 or 7, characterized in that, The proximal portion (110) of the male seat terminal includes at least one raised portion (1120) disposed adjacent to the proximal end of the proximal portion (110) of the male seat terminal and extending and protruding from opposite sides of the proximal portion (110) of the male seat terminal along the second direction (X). The raised portion (1120) is configured to taper from the proximal side of the male seat terminal towards the distal side of the male seat terminal along the first direction (Y). When the proximal portion (110) of the male seat terminal is received in the proximal end portion (141) of the male seat housing through-hole, at least a part of the raised portion (1120) abuts against two inner surfaces of the proximal end portion (141) of the male seat housing through-hole that are opposite to each other in the second direction (X).

9. The male connector according to claim 6 or 7, characterized in that, The intermediate connecting portion (112) includes a bending portion configured such that: the central axis (L1) of the proximal portion (110) of the male seat terminal extending along the first direction (Y) and the central axis (L2) of the distal portion (111) of the male seat terminal extending along the first direction (Y) are offset from each other by a certain distance (L) in the third direction (Z), and when the proximal portion (110) of the male seat terminal is received in the proximal end portion (141) of the male seat housing through-hole, the outer surface of the proximal portion (110) of the male seat terminal that is away from the central axis (L1) of the proximal portion (110) of the male seat terminal in the third direction (Z) abuts against the inner surface of the proximal end portion (141) of the male seat housing through-hole in the third direction (Z).

10. The male connector according to claim 5 or 6, characterized in that The male seat housing (12) of the male seat connector (10) includes a male seat housing side wall (126) extending along the first direction (Y) from the outer peripheral edge of the male seat housing base (13). The male seat housing side wall (126) is integrally formed with the male seat housing base (13), and the dimension of the male seat housing side wall (126) extending in the first direction (Y) is greater than the dimension of the portion of the male seat terminal (14) that extends beyond the distal side surface (121) of the male seat housing base (13).

11. A female socket connector, the female socket connector (20) having: a first direction (Y) defining the thickness extension direction of the female socket connector; a second direction (X) perpendicular to the first direction (Y) defining the width dimension of the female socket connector; and a third direction (Z) defining the longitudinal extension direction of the female socket connector, the third direction being perpendicular to the first direction (Y) and the second direction (X) respectively, characterized in that, The female seat connector (20) includes a plurality of female seat terminals (21) arranged in a female seat terminal array and a female seat housing (22) for receiving the female seat terminals (21). In the female seat terminal array, the female seat terminals (21) are arranged in rows along the second direction (X) and in columns along the third direction (Z).

12. The female socket connector according to claim 11, wherein, Each of the plurality of female seat terminals (21) has the same dimension in the first direction (Y).

13. The female socket connector according to claim 11 or 12, characterized in that, The female socket terminal (21) includes a distal end portion (211) of the female socket terminal and a proximal end portion (210) of the female socket terminal. The proximal end portion (210) of the female socket terminal is formed as a plate-like portion. The distal end portion (211) of the female socket terminal includes a pair of leg-like portions that protrude from the distal end portion of the proximal end portion (210) of the female socket terminal. The pair of leg-like portions includes a first leg-like portion (2110) and a second leg-like portion (2111). The first leg-like portion (2110) and the second leg-like portion (2111) are formed to be spaced apart at a portion adjacent to the proximal end portion (210) of the female socket terminal and to approach each other at free end portions away from the proximal end portion (210) of the female socket terminal, thereby forming a clamping portion.

14. The female socket connector according to claim 13, characterized in that, The first leg-like portion (2110) includes a proximal end portion (2113) of the first leg-like portion adjacent to the proximal end portion (210) of the female socket terminal and a distal end portion (2112) of the first leg-like portion away from the proximal end portion (210) of the female socket terminal. The second leg-like portion (2111) includes a proximal end portion (2115) of the second leg-like portion adjacent to the proximal end portion (210) of the female socket terminal and a distal end portion (2114) of the second leg-like portion away from the proximal end portion (210) of the female socket terminal. The distance between the distal end portion (2112) of the first leg-like portion and the distal end portion (2114) of the second leg-like portion is less than the distance between the proximal end portion (2113) of the first leg-like portion and the proximal end portion (2115) of the second leg-like portion.

15. The female socket connector according to claim 14, characterized in that, The distal end portion (2112) of the first leg-like portion includes a first flat plate portion (2118) continuous with the proximal end portion (2113) of the first leg-like portion and a first spiral portion (2116) that spirally extends from the first flat plate portion (2118) in a first spiral direction and gradually moves away from the first flat plate portion (2118). The distal end portion (2114) of the second leg-like portion includes a second flat plate portion (2119) continuous with the proximal end portion (2115) of the second leg-like portion and a second spiral portion (2117) that spirally extends from the second flat plate portion (2119) in a second spiral direction opposite to the first spiral direction and gradually moves away from the second flat plate portion (2119). The first spiral portion (2116) and the second spiral portion (2117) are configured to be spaced apart from each other and face each other. The distance between the first spiral portion (2116) and the second spiral portion (2117) is less than the distance between the proximal end portion (2113) of the first leg-like portion and the proximal end portion (2115) of the second leg-like portion, thereby forming the clamping portion.

16. The female socket connector according to claim 13, wherein, The female socket housing (22) of the female socket connector (20) includes a female socket housing base (23), and the female socket housing base (23) includes a plurality of female socket housing through holes (24) arranged in the same array form as the female socket terminal array. Each female socket terminal of the female socket connector (20) is respectively received in a corresponding one of the plurality of female socket housing through holes (24), such that the distal end portion (211) of each female socket terminal (21) is not visible from the distal side surface (230) of the female socket housing base (23), and the proximal end portion (210) of each female socket terminal (21) extends beyond the proximal side surface (220) of the female socket housing base (22).

17. An electrical connector assembly, the electrical connector assembly (100) includes a male socket connector and a female socket connector arranged in pairs, the male socket connector is the male socket connector according to any one of claims 1 to 10, and the female socket connector is the female socket connector according to any one of claims 11 to 16, characterized in that In a state where the male socket connector (10) and the female socket connector (20) are engaged with each other, the distal side surface (121) of the male socket housing base (13) of the male socket connector faces the distal side surface (230) of the female socket housing base (23) of the female socket connector in the first direction (Y), such that a plurality of the male socket terminals (11) arranged as the male socket terminal array are engaged with a plurality of the female socket terminals (21) arranged as the female socket terminal array in a one-to-one correspondence to form an electrical connection.

18. The electrical connector assembly according to claim 17, wherein, In a state where the male socket connector (10) and the female socket connector (20) are engaged, the distal end portion (111) of each male socket terminal of the male socket connector (10) is inserted into a corresponding one of the plurality of female socket housing through holes (24) of the female socket housing (22) of the female socket connector (10) along the first direction (Y), and is engaged with the distal end portion (211) of the female socket terminal (21) received in the corresponding female socket housing through hole to form an electrical connection.

19. The electrical connector assembly according to claim 18, wherein, The distal end portion (111) of the male socket terminal (11) is engaged with the first helical portion (2116) and the second helical portion (2117) of the distal end portion (211) of the female socket terminal (21) and is clamped between the first helical portion (2116) and the second helical portion (2117).

20. The electrical connector assembly according to any one of claims 17 to 19, characterized in that, The male socket housing (12) and the female socket housing (22) respectively include positioning feature portions for forming a form-fit in a state where the male socket connector (10) and the female socket connector (20) are engaged.

21. The electrical connector assembly according to claim 20, wherein, The male socket housing side wall (126) of the male socket housing (12) includes a first end wall (138) and a second end wall (139) opposite to each other in the third direction (Z), and the positioning feature portion includes: Female housing base recesses (131) are respectively formed at two opposite ends in the third direction (Z) of the distal side surface (121) of the female housing base (13) of the male connector (10), and third end walls (251) and fourth end walls (252) are provided at opposite ends of the female housing base (23) of the female connector (20) along the third direction (Z), wherein the third end wall (251) and the fourth end wall (252) are configured to extend beyond the distal side surface (230) of the female housing base (23) along the first direction (Y) such that: in a state where the male connector (10) is engaged with the female connector (20), the third end wall (251) and the fourth end wall (252) are respectively embedded into grooves (150) jointly formed by the first end wall (138), the second end wall (139) and the corresponding female housing base recesses (131).

22. The electrical connector assembly according to claim 21, wherein, The female housing side walls (126) include a first side wall (122) and a second side wall (123) opposite to each other in the second direction (X), and the positioning feature further includes: first side wall recesses (1221) respectively provided at two opposite ends in the third direction (Z) of the first side wall (122), and first side wall protrusions (124) protruding towards the inside of the female housing (12) and respectively provided between the two first side wall recesses adjacent to a corresponding one of the two first side wall recesses; and, third end wall protrusions (2511) and fourth end wall protrusions (2521) are respectively provided on the sides of the third end wall (251) and the fourth end wall (252) of the female housing (22) corresponding to the first side wall (122) of the female housing (12) in the second direction (X) and extending beyond the side surface of the female housing base (23) along the second direction (X), wherein, in a state where the male connector (10) is engaged with the female connector (20), the third end wall protrusion (2511) and the fourth end wall protrusion (2521) of the female connector (20) are respectively engaged in a form - fit manner into the corresponding first side wall recesses (1221) provided on the first side wall (122) of the male connector (10), and the first side wall protrusion (124) abuts against a portion of the side surface of the female housing (22) where the third end wall protrusion (2511) and the fourth end wall protrusion (2521) are not provided.

23. The electrical connector assembly according to claim 22, wherein, The positioning feature further includes: second side wall protrusions (125) respectively provided at two opposite ends in the third direction (Z) of the second side wall (123) and protruding towards the inside of the female housing (12), Wherein, in a state where the male connector (10) is engaged with the female connector (20), the second sidewall protrusion (125) is engaged with a side surface of the female housing member (22) of the female connector (20) where the third end wall protrusion (2511) and the fourth end wall protrusion (2521) are not provided.

24. A board-to-board electrical connection device, the electrical connection device (200) comprising: a pair of printed circuit boards (60), and the electrical connector assembly according to any one of claims 17 to 23; characterized in that the pair of printed circuit boards (60) are respectively coupled to the male connector (10) and the female connector (20) in the electrical connector assembly, and in a state where the male connector (10) is engaged with the female connector (20), the pair of printed circuit boards (60) are electrically connected to each other and form a configuration substantially parallel to each other.

25. The electrical connection device according to claim 24, characterized in that the proximal end portion (110) of each male terminal (11) of the male connector (10) extends beyond the proximal side surface (120) of the male housing member base (13) of the male housing member (12) and is connected to one of the pair of printed circuit boards (60), and the proximal end portion of each female terminal (21) of the female connector (20) extends beyond the proximal side surface (220) of the female housing member base (22) of the female housing member and is connected to the other of the pair of printed circuit boards (60).

26. The electrical connection device according to claim 25, characterized in that, The proximal end portion (110) of the male terminal (11) extending beyond the proximal side surface (120) of the male housing member base (13) is formed to have an L-shaped bent portion (1101), and the proximal end portion (210) of the female terminal (21) extending beyond the proximal side surface (220) of the female housing member base (23) is formed to have an L-shaped bent portion (2101).

27. The electrical connection device according to any one of claims 24 to 26, characterized in that the male connector (10) further includes a first housing (40) sleeved on the sidewall (126) of the male housing member (12), and the female connector (10) includes a second housing (50) sleeved on the outside of the base (23) of the female housing member (22).

28. The electrical connection device according to claim 27, characterized in that The first housing (40) includes: a first portion (41) sleeved on a first end wall (138) of the male seat accommodating member, a second portion (42) sleeved on a second end wall (139) of the male seat accommodating member, a third portion (43) sleeved on a first side wall (122) of the male seat accommodating member, and a fourth portion (44) sleeved on a second side wall (123) of the male seat accommodating member. The first portion (41), the second portion (42), the third portion (43), and the fourth portion (44) are all formed as U-shaped members having a long side portion (425) and a short side portion (430), and have open ends in a direction toward the proximal side of the base (13) of the male seat accommodating member along the first direction (Y). Among them, the first portion (41), the second portion (42), the third portion (43), and the fourth portion (44) are respectively detachably sleeved on the first end wall (138), the second end wall (139), the first side wall (122), and the second side wall (123) via the open ends, such that the long side portion (425) of the U-shaped member engages with the outer surfaces of the first end wall (138), the second end wall (139), the first side wall (122), and the second side wall (123), while the short side portion of the U-shaped member engages with the inner surfaces of the first end wall (138), the second end wall (139), the first side wall (122), and the second side wall (123) facing the inside of the male seat accommodating member.

29. The electrical connection device according to claim 28, wherein At the edge of the proximal side surface (120) of the long side portion (425) of the U-shaped member that constitutes the first portion (41), the second portion (42), the third portion (43), and the fourth portion (44) of the first housing (40), a plurality of first straight extensions (421) and a plurality of first bends (422) are alternately arranged. Among them, the first bend (422) includes a first straight portion (424) disposed in the same plane as the first straight extension (421) and a first bent portion (423) connected to the first straight portion (424). In the direction toward the proximal side of the base (13) of the male seat accommodating member along the first direction (Y), the end surface of the first straight extension (421) is flush with the end surface of the first bent portion (423) of the first bend (422), and The outer peripheral edge of the distal side surface (121) of the base (13) of the male seat accommodating member includes a plurality of first lugs (132) with first apertures (133). Among them, in a state where the first housing (40) is sleeved on the side wall (126) of the male socket accommodating member, the first bending portion (422) is disposed between two adjacent first lugs (132) or the first lugs (132) are disposed between two adjacent first bending portions (422). The first straight extension portion (421) of the first housing (40) is inserted through the first orifice (133) of the first lug (132) and extends beyond the proximal side surface (120) of the base (13) of the male socket accommodating member. Moreover, the dimension of the first straight extension portion (421) extending beyond the proximal side surface (120) of the base (13) of the male socket accommodating member is the same as the dimension of the proximal end portion (110) of the male socket terminal (11) extending beyond the proximal side surface (120) of the base (13) of the male socket accommodating member.

30. The electrical connection device according to claim 29, characterized in that, In a direction towards the proximal side of the base (13) of the male socket accommodating member along the first direction (Y), the first housing (40) is connected to one of the pair of printed circuit boards (60) through the end surface of the first bending portion (423) of the first straight extension portion (421) and the first bending portion (422).

31. The electrical connection device according to claim 28, characterized in that, The short side portions of the U-shaped members constituting the first part (41), the second part (42), the third part (43), and the fourth part (44) of the first housing (40) are configured as elastically deformable members, such that in a state where the male socket connector (10) is engaged with the female socket connector (20), the short side portions of the U-shaped members constituting the first part (41), the second part (42), the third part (43), and the fourth part (44) of the first housing (40) respectively abut against the outer surface of the base (23) of the female socket accommodating member of the female socket connector (20) and apply a biasing force towards the inside of the male socket accommodating member (12) of the male socket connector (10) to the female socket connector (20).

32. The electrical connection device according to claim 31, characterized in that, The short side portions of the U-shaped members constituting the first part (41), the second part (42), the third part (43), and the fourth part (44) of the first housing (40) include a plurality of short side segments (430) that are spaced apart from each other and extend in a direction toward the proximal side of the male receptacle member base (13) along the first direction (Y). Each of the plurality of short side segments (430) is connected to the long side portion (425) of the U-shaped member through a corresponding intermediate connecting portion (431). Each short side segment (430) includes a frame portion (429) and an elastic overhanging portion (433). One end of the elastic overhanging portion (433) is connected to the frame portion (429), and the other end of the elastic overhanging portion (433) is separated from the frame portion (429) along the first direction (Y) to form a free end portion (432). And the free end portion (432) of the elastic overhanging portion (433) is bent to protrude toward the inside of the female receptacle member (12), so that in a state where the male connector (10) is engaged with the female connector (20), the elastic overhanging portion (433) of each short side segment (430) abuts against the outer surface of the female receptacle member base (23) of the female connector (20) and applies a biasing force to the female connector (20) toward the inside of the male receptacle member (12) of the male connector (10).

33. The electrical connection device according to claim 32, characterized in that, The inner surface (127) of the male receptacle member sidewall (126) of the male receptacle member (12) of the male connector (10) includes a plurality of sidewall grooves (128) and a plurality of sidewall protrusions (129) that are alternately arranged. The male receptacle member base (13) of the male receptacle member (12) of the male connector (10) includes a plurality of receiving portions (135) corresponding to the plurality of sidewall grooves (128). The receiving portions (135) are recessed from the distal side surface (121) of the male receptacle member base (13) toward the proximal side of the male receptacle member base (13) along the first direction (Y).

34. The electrical connection device according to claim 33, characterized in that, A tip protruding portion (428) is provided at an end of each short side segment (430) opposite to the intermediate connecting portion (431). The tip protruding portion (428) is aligned with the elastic overhanging portion (433) of the short side segment (430) in the first direction (Y), so that in a state where the first housing (40) is sleeved on the male receptacle member sidewall (126), the elastic overhanging portion (433) of the short side segment (430) is aligned with the sidewall groove (128) provided on the inner surface (127) of the male receptacle member sidewall (126), and the tip protruding portion (428) is received in the receiving portion (135) corresponding to the sidewall groove (128).

35. The electrical connection device according to claim 34, wherein The central portion of the free end (432) of the elastic overhanging portion (433) includes an overhanging arm recess (426), so that a pair of overhanging arm contact portions (427) are formed at the free end (432) of the elastic overhanging portion (433).

36. The electrical connection device according to claim 27, characterized in that, The second housing (50) includes: a third end wall housing (53) and a fourth end wall housing (54) which are respectively detachably sleeved on the outer sides of the third end wall (251) and the fourth end wall (252) in the third direction (Z) of the base (23) of the female seat accommodating member (22); and a third side housing (55) and a fourth side housing (56) which are respectively detachably sleeved on the outer sides of the third side portion (28) and the fourth side portion (29) in the second direction (X) of the base (23) of the female seat accommodating member (22), each of the third end wall housing (53), the fourth end wall housing (54), the third side housing (55) and the fourth side housing (56) includes a housing fixing portion (550) configured to engage with the edge of the distal side surface (230) of the base (23) of the female seat accommodating member and a housing attachment portion (51) configured to be adjacent to the proximal side surface (220) of the base (23) of the female seat accommodating member.

37. The electrical connection device according to claim 36, characterized in that, The edge of the distal side surface (230) of the base (23) of the female seat accommodating member includes fixed recesses (2301) arranged at intervals, and the housing fixing portion (550) includes a plurality of abutting portions (5501) and a plurality of fixed mounting portions (5502) arranged alternately, wherein the fixed mounting portions (5502) are configured to bend towards the base (23) of the female seat accommodating member and engage into the fixed recesses (2301).

38. The electrical connection device according to claim 37, characterized in that, The abutting portions (5501) bend towards the base (23) of the female seat accommodating member and abut against the edge of the distal side surface (230) of the base (23) of the female seat accommodating member.

39. The electrical connection device according to claim 38, characterized in that, The edge of the proximal side surface (220) of the base (23) of the female seat accommodating member includes a plurality of second lugs (30) arranged at intervals, each second lug (30) includes a second orifice (31), and the housing attachment portion (51) includes a plurality of second straight extension portions (510) and a plurality of second bending portions (511) arranged alternately, the second bending portions (511) include a second straight portion (513) arranged in the same plane as the second straight extension portions (510) and a second bent portion (512) connected to the second straight portion (513), in the direction towards the proximal side of the base (23) of the female seat accommodating member along the first direction (Y), the end surface of the second straight extension portion (510) is flush with the end surface of the second bent portion (512) of the second bending portion (511), and Wherein, in a state where the second housing (50) is sleeved outside the base (23) of the female socket accommodating member, the second bending portion (511) is disposed between two adjacent second lugs (30) or the second lugs (30) are disposed between two adjacent second bending portions (511), the second straight extension portion (510) is inserted through the second orifice (31) of the second lug (30) and extends beyond the proximal side surface (220) of the base (23) of the female socket accommodating member, and the dimension by which the second straight extension portion (510) extends beyond the proximal side surface (220) of the base (23) of the female socket accommodating member is the same as the dimension by which the proximal end portion (210) of the female socket terminal (11) extends beyond the proximal side surface (220) of the base (23) of the female socket accommodating member.

40. The electrical connection device according to claim 39, wherein, In a direction along the first direction (Y) toward the proximal side of the base (23) of the female socket accommodating member, the second housing (50) is connected to one of the pair of printed circuit boards (60) by an end surface of the second bending portion (512) of the second straight extension portion (510) and the second bending portion (511).

Images