CN215645238U - BTB plug, BTB socket and BTB connector - Google Patents

Abstract

The utility model relates to a BTB plug, a BTB socket and a BTB connector, wherein the BTB connector comprises a BTB plug and a BTB socket, and plug terminals extending along the insertion direction are assembled on two sides of a plug shell of the BTB plug; the BTB socket comprises a socket shell with an inner cavity with two open ends, and socket terminals assembled in the socket shell form a hollow cavity into which a BTB plug is inserted; when the connector is plugged, any position of the contact area of the plug terminal extending along the axial direction can be in contact conduction with the socket terminal, so that the connector can meet the floating requirements of different heights between the printed boards through the axial relative sliding of the BTB plug and the BTB socket. The BTB plug and the BTB socket can meet the connection between printed boards with different board heights through axial floating, reduce the product development types, and save the development cost and the development period.

Description

BTB plug, BTB socket and BTB connector

Technical Field

The utility model belongs to the technical field of connectors, and particularly relates to a BTB plug, a BTB socket and a BTB connector.

Background

In order to realize the conductive connection between printed boards with different heights, the conventional design is matched by developing head bases with different heights so as to realize the conductive connection. When the conductive connection between different printed boards is realized through the plugs or the sockets with different heights, the product types are various, and the development cost is higher.

Disclosure of Invention

In order to realize the conduction connection between printed boards with different heights, the utility model designs the BTB with a novel structure, so that the BTB can adapt to different board-to-board distances through the axial floating between the plug and the socket.

The purpose of the utility model and the technical problem to be solved are realized by adopting the following technical scheme. According to the BTB connector provided by the utility model, the BTB connector comprises a BTB plug and a BTB socket, wherein plug terminals extending in the insertion direction are assembled on two sides of a plug shell of the BTB plug; the BTB socket comprises a socket shell with an inner cavity with two open ends, and socket terminals assembled in the socket shell form a hollow cavity into which a BTB plug is inserted; when the connector is plugged, any position of the contact area of the plug terminal extending along the axial direction can be in contact conduction with the socket terminal, so that the connector can meet the floating requirements of different heights between the printed boards through the axial relative sliding of the BTB plug and the BTB socket.

The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.

In the BTB connector, the socket housing of the BTB socket has no independent terminal accommodating cavity, and the socket terminal is fixedly assembled on the side wall of the inner cavity of the socket housing.

In the BTB connector, the tail end of the socket terminal in the BTB socket is bent and then connected with the second printed board sleeved outside the socket housing, so that the BTB socket can be plugged with the BTB plug through the forward direction of the front end or the reverse direction of the rear end to meet the requirement of large floating between boards.

In the BTB connector, the tail of the socket housing is turned outwards to form a turned edge, and the tail end of the socket terminal is bent and then penetrates through the terminal pin through hole on the turned edge, and is connected to the second printed board fixed on the turned edge.

In the BTB connector, the BTB plug and the BTB socket have a guiding structure therebetween for guiding insertion and engagement when the socket is inserted in a forward direction or a reverse direction.

In an embodiment of the BTB connector, the guide structure includes a guide post and a guide slot respectively located on the plug housing and the socket housing, and a guide chamfer respectively located at the front end of the plug housing and the front end and the rear end of the cavity of the socket housing.

In the BTB connector, the plug terminal is an integral U-shaped terminal, a two-piece single-piece terminal or a PCB terminal having a plurality of contact areas.

In the BTB connector, the plug housing is provided with a terminal fitting groove for inserting and fitting the plug terminal.

In the BTB connector, at least one contact for contacting and conducting with the plug contact area is arranged above the BTB socket terminal, a supporting portion for fixedly assembling with the socket housing is arranged below the BTB socket terminal, and the tail portion of the BTB socket terminal is provided with a bending portion for bending towards the outside of the socket housing and a socket terminal pin for connecting with the second printed board.

The BTB connector described above, wherein the plug terminal and the receptacle terminal each include at least one of a power terminal and a signal terminal.

The purpose of the utility model and the technical problem to be solved are also realized by adopting the following technical scheme. According to the present invention, a BTB plug is provided, which is the BTB plug described above.

The purpose of the utility model and the technical problem to be solved are realized by adopting the following technical scheme. According to the present invention, a BTB socket is provided, which is the BTB socket described above.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. By means of the technical scheme, the utility model can achieve considerable technical progress and practicability, has wide industrial utilization value and at least has the following advantages:

the BTB plug and the BTB socket can meet the connection between printed boards with different board heights through axial floating, the same BTB socket can be inserted into the existing BTB plug in a way of reversing 180 degrees, the requirement of large-range printed board height floating is met, the product development types are reduced, and the development cost and the development period are saved. The floating amount of the connector is larger than the height of the socket.

Drawings

Fig. 1 is a schematic diagram of a plug structure of a BTB connector according to embodiment 1 of the present invention;

fig. 2 is an exploded view of a plug of the BTB connector according to embodiment 1 of the present invention;

fig. 3 is a schematic diagram of pre-connection of a plug and a printed board of the BTB connector according to embodiment 1 of the present invention;

fig. 4 is a schematic diagram of the pre-connection of the BTB connector socket and the printed board according to embodiment 1 of the present invention;

fig. 5 is a schematic structural diagram of a BTB connector socket according to embodiment 1 of the present invention;

fig. 6 is an exploded view of a BTB connector receptacle according to embodiment 1 of the present invention;

fig. 7 is a schematic view of the BTB connector header of embodiment 1 with a positive fit satisfying a large gap between boards;

FIG. 8 is a schematic diagram of a BTB connector header of example 1 with a small spacing between the boards in a positive fit;

fig. 9 is a schematic view of the reverse mating of the header of the BTB connector according to embodiment 1 of the present invention to satisfy the requirement of a large space between boards;

FIG. 10 is a schematic view of the BTB connector header of example 1 of the present invention with a small spacing between the boards in a reverse mating configuration;

fig. 11 is a perspective view of a mating header of the BTB connector according to embodiment 1 of the present invention;

FIG. 12 is a bottom view of a BTB connector jack according to example 1 of the present invention;

FIG. 13 is a schematic structural diagram of a power terminal of the socket according to embodiment 1 of the present invention;

fig. 14 is a schematic structural view of a signal terminal of a socket according to embodiment 1 of the present invention;

fig. 15 is a schematic view of a plug terminal of the BTB connector according to embodiment 1 of the present invention;

fig. 16 is a schematic view of another plug terminal of the BTB connector according to embodiment 1 of the utility model;

fig. 17 is a schematic view of another plug structure of the BTB connector according to embodiment 1 of the present invention;

FIG. 18 is a partially exploded view of FIG. 17;

fig. 19 is a schematic structural diagram of a BTB connector plug according to embodiment 2 of the present invention;

fig. 20 is another view of a BTB connector plug according to embodiment 2 of the present invention;

fig. 21 is an exploded view of a BTB connector plug according to embodiment 2 of the present invention;

fig. 22 is a schematic diagram of the pre-connection of the BTB connector plug and the printed board according to embodiment 2 of the present invention;

fig. 23 is a schematic structural view of a BTB connector socket according to embodiment 2 of the present invention;

fig. 24 is a schematic view of the pre-connection of a BTB connector socket and a printed board according to embodiment 2 of the present invention;

fig. 25 is an exploded view of a BTB connector receptacle according to embodiment 2 of the present invention;

FIG. 26 is a reverse view of a BTB connector jack according to example 2 of the present invention;

fig. 27 is a schematic diagram of a power terminal structure of a BTB connector receptacle according to embodiment 2 of the present invention;

fig. 28 is a schematic diagram of a signal terminal structure of a BTB connector receptacle according to embodiment 2 of the present invention;

fig. 29 is a schematic view of the BTB connector of embodiment 2 of the present invention being inserted in the forward direction to satisfy the requirement of a large space between boards;

FIG. 30 is a schematic view of a BTB connector according to example 2 of the present invention with a small board-to-board distance in a positive-direction fit;

fig. 31 is a schematic perspective view of the BTB connector according to embodiment 2 of the present invention.

[ description of main element symbols ]

1: BTB plug

2: BTB socket

3: first PCB board

4: second PCB board

5: plug terminal

51: plug signal terminal

52: plug power terminal

53: contact zone

54: PCB terminal

55: two-body single-chip type terminal

56: u-shaped terminal

57: plug terminal pin

6: socket terminal

61: socket signal terminal

611: signal contact

612: signal fixing part

613: signal bending position

62: socket power supply terminal

621: power supply contact

622: power supply fixing part

623: power supply bending part

63: socket terminal pin

7: plug shell

71: terminal assembling groove

72: limiting part

73: guide groove

74: spacing projection

75: chimeric body

8: socket shell

81: middle cavity

82: side wall

83: turned edge

84: terminal pin through hole

85: guide post

86: guide chamfer

87: mosaic cavity

88: heat sink

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the BTB connector according to the present invention, with reference to the accompanying drawings and preferred embodiments, describes specific embodiments, structures, features and effects thereof.

Please refer to fig. 1-19, which are schematic structural views of parts of a BTB connector according to embodiment 1 of the present invention, the connector includes a BTB plug 1 and a BTB socket 2, wherein the BTB plug 1 includes a plug housing 7, the plug housing 7 is externally provided with a plug terminal 5 extending along an axial direction, the plug terminal 5 includes a contact region 53 positioned and assembled on the outside of the plug housing 7, and a plug terminal pin 57 protruding from a tail portion of the plug housing 7 for being fittingly connected with the first printed board 3. The BTB plug 1 realizes contact conduction with the socket terminal 6 in the BTB socket 3 through the contact zone 53 of the plug terminal 5, and the contact zone 53 is a long section extending along the axial direction, so that the BTB plug 1 can float in a large range relative to the BTB socket 3 in the axial direction, and the connection requirement between printed boards in a large distance range is met.

The plug shell 7 of the BTB plug 1 is a fixed body, the plug terminals 5 are arranged on two sides of the fixed body, and the terminal contact areas 53 are exposed to realize contact conduction with the socket terminal contacts.

In the embodiment of the present invention, adjacent plug terminals 5 are separated by a positioning wall 74 on a side wall of the plug housing 7, which is higher than the surface of the plug terminal 5, and a terminal assembling groove 71 for the plug terminal 5 to be inserted in a matching manner is formed between the adjacent positioning walls 74, and the terminal assembling groove 71 at least can realize the limit of the plug terminal in the horizontal direction, so as to realize the positioning assembly between the plug terminal 5 and the plug housing 7.

According to the plug, different plug terminal structures are assembled according to the structure of the plug shell 7, so that the assembling difficulty and the processing difficulty are reduced, the assembling efficiency is improved, and the processing and assembling cost is saved.

In an embodiment of the present invention, the plug terminal 5 is an integral U-shaped terminal 56, two vertical portions of the U-shaped terminal 56 are respectively located in the terminal assembling grooves 71 on two sides of the plug housing 7, and a bending portion connecting the two vertical portions is in limit fit with the front end surface of the plug housing 7. Preferably, the adjacent bent portions are also spaced by a positioning wall 74 protruding from the front end face of the plug housing 1, and the groove formed between the adjacent positioning walls 74 on the front end face of the plug housing 1 can limit the bent portion of the U-shaped terminal 56.

In another embodiment of the present invention, the plug terminal 5 is a two-piece one-piece terminal 56, the two-piece one-piece terminal 56 is guided and fitted into the terminal fitting groove 71 on both sides of the plug housing 7, and the horizontal position limitation is achieved by the positioning wall 74 on both sides of the terminal fitting groove 71. Preferably, two sides of the two-piece single-piece terminal 56 are further provided with positioning protrusions 562 for performing a stop-fit with the positioning protrusions on two sides of the terminal assembling groove 71 to achieve a vertical positioning. Both of the two-piece monolithic terminals 56 have a pin structure at the bottom and a contact area at the top. Preferably, the front end of the two-piece one-piece terminal 56 further has a fold 561 for engaging and limiting the front end of the terminal fitting groove 71, but is not limited thereto.

In another embodiment of the present invention, the plug terminal 5 is a PCB contact end 54, the PCB contact end 54 is a PCB provided with a plurality of contact areas 53, and the bottom of the corresponding contact area 53 of the PCB is connected with a plug terminal pin 57.

The plug terminal 5 is connected with the first printed board 3 through the plug terminal pin 57, in order to enhance the inserting stability of the plug terminal pin 57, the tail of the plug housing 7 of the utility model is further provided with a limiting part 72 for closing the terminal assembling groove 71 and enhancing the horizontal limiting of the terminal 5, and the limiting part 72 is matched with the positioning wall 74 to form a cavity for accommodating the plug terminal. In the embodiment of the present invention, the position-limiting portion 72 protrudes from the positioning wall 74, but the present invention is not limited thereto.

In the embodiment of the present invention, the plug terminal 5 includes a plug power terminal 52 and a plug signal terminal 51, the plug power terminal 52 and the plug signal terminal 51 are both assembled on both sides of the plug housing 7, when in use, the power terminal 52 and the signal terminal 51 are connected to the first printed board 3 through the terminal pin 57 at the bottom, and the upper contact area 53 is in contact with the socket contact area, so as to realize conduction connection.

The BTB socket 2 includes a socket housing 8 and socket terminals 6 fitted in the socket housing 8, the socket housing 8 has a cavity extending in the axial direction with both ends free to open, the socket terminals 6 are symmetrically distributed on both sides of the cavity, and the oppositely distributed socket terminals 6 form a middle cavity 81 for the BTB plug 1 to be inserted and to be in contact conduction with contact regions of the plug outer terminals. The tail of the socket shell 8 is turned over outwards to form a turned edge 83, a terminal pin through hole 84 for the socket terminal pin 63 of the socket terminal 6 to pass through is arranged on the turned edge 83, and the socket terminal pin 63 at the tail of the socket terminal 6 fixed in the socket shell 8 extends out of the socket shell 8 from the terminal pin through hole 84 and is connected with the second printed board 4 fixedly assembled on the turned edge 83. In the embodiment of the present invention, the second printed board 4 is sleeved on the periphery of the socket housing 8 through a through hole in the middle of the second printed board, through which the front end of the socket housing 8 passes, and is stopped and limited by the turning edge 83 at the tail of the socket housing 8.

In the embodiment of the present invention, the socket housing 8 has no separate socket terminal receiving chamber, and the socket terminal 6 is provided on the side wall 82.

Due to the design of the structure, the BTB socket 2 realizes the connector of the front end or the rear end of the BTB socket and the front end of the BTB plug 1 through the plugging of the front end or the rear end of the BTB socket. A guide structure for realizing the insertion and guide of the BTB socket 2 and the BTB plug 1 is arranged between the two, and preferably, the guide structure is a structure of a guide post 85 and a guide groove 73 which are matched with each other. In the embodiment of the present invention, the guiding posts 85 are columnar protrusions located at two ends of the middle cavity 81 and extending to the front and rear end surfaces of the receptacle housing along the axial direction of the receptacle, the guiding grooves 73 are groove structures located at two ends of the plug housing 7 and extending along the axial direction, and when the connector is plugged, no matter the plug is plugged with the front end or the tail of the receptacle (the receptacle is plugged positively or negatively), the guiding posts and the guiding grooves are in guiding fit to realize the plugging fit of the plug and the receptacle. Preferably, the front end and the rear end of the plug housing are provided with guide chamfers 86 for guiding and matching with the chamfers at the front end of the plug housing.

When the BTB plug is matched with the BTB socket, the BTB plug penetrates through the middle cavity of the BTB socket and the second PCB to slide up and down, so that the large floating requirements of different heights between the printed boards can be met. Fig. 7 and 8 are schematic diagrams of connector assembly when the plug and the socket are in forward fit, and at this time, the socket can slide up and down on the plug to meet the height requirement of any board, and can meet the requirement of extremely low board spacing H2. The BTB socket can be turned 180 degrees horizontally and then reversely fitted with the plug, and the socket can still slide up and down on the plug to meet the height requirement between any two boards, as shown in fig. 9 and 10. The connector can still be oppositely plugged with the existing BTB plug through 180 degrees in the reverse direction of the same BTB socket, the height H3 between printed boards in a wider range is realized, the product development types are reduced, and the development cost and the development period are saved.

The opening width of the front end of the plug shell is smaller than the closing width of the rear end of the plug shell, so that the assembly of a socket terminal is facilitated, and when the connector is inserted in the forward direction of a socket, the limiting part 72 on the plug shell can enter the socket shell, so that the requirement of extremely low board spacing H2 is met; when the plug shell is not provided with the limiting part 72, the connector can realize the plate spacing requirement smaller than H4 when the socket is inserted reversely.

The upper portion of the socket terminal 6 is provided with at least one contact area for contacting and conducting with the plug terminal 5, the lower portion is a supporting portion for fixedly assembling with the socket shell 8 and providing support for the contact area, and the bottom portion is provided with a bending portion for extending the tail portion of the terminal to the direction of the flanging 83 and enabling the socket terminal pin 63 to extend out of the terminal pin through hole on the flanging.

In the embodiment of the present invention, the socket terminal 6 includes a socket signal terminal 61 and a socket power terminal 62, the socket signal terminal 61 includes a contact area, a signal fixing portion 612, a signal bending portion 613 and a socket terminal pin 63 in sequence from front to back, and the contact area is provided with at least one signal contact point 611. The socket power terminal 62 comprises a contact area, a power fixing portion 622, a power bending portion 623 and a socket terminal pin 63 in sequence from front to back, and the contact area is provided with at least one power contact 621. When the product is used, the BTB plug 1 is connected with the first printed board through the bottom pins of the power supply and signal terminals, then the contact area of the upper part of the terminal is contacted with the contact area of the socket power supply terminal and the signal terminal, the conduction between the head bases is realized, and the bottom pins of the socket power supply terminal and the signal terminal are connected with the second printed board connector, so that the conduction connector between the two printed boards is finally realized.

Referring to fig. 19-31, which are schematic structural views of parts of a BTB connector according to embodiment 2 of the present invention, a plug 1 of the present invention is a fixing body, contact terminals are disposed on two sides of the fixing body, and contact areas of the terminals are exposed. The socket 2 has a mating cavity opened at both ends so as to enable a forward and reverse mating with the plug 1.

In this embodiment, the socket terminal 6 in the BTB socket 2 is not bent any more, but is arranged straight up and down, the socket terminal pin 63 of the socket terminal 6 extends from the tail of the socket 2 and is connected with the second printed board 4 fixed on the end face of the tail of the socket, that is, in this embodiment, the PCB board of the socket is arranged below the socket, and in order to realize the forward and reverse insertion of the plug 1 and the socket 2 of the present invention, the second printed board 4 fixed on the end face of the tail of the socket is provided with the through groove 41 corresponding to the middle cavity 81 formed by the socket terminal in the socket 2 and through which the plug 1 passes.

In this embodiment, because socket terminal 6 sets up vertically, second printed board 4 is located socket afterbody terminal surface, 8 afterbody of socket casing can not establish turn over along 83, so can make the occupation of board area of socket 2 diminish, the miniaturization of being convenient for. The socket housing 8 of the present invention can also be more firmly combined with the second printed board 4 by providing the turned edge 83 at the tail portion.

In this embodiment, in order to limit the minimum distance between the boards when the plug 1 and the socket 2 are inserted, the plug 1 is further provided with an insertion body 75 on both sides of the plug housing, and the socket housing 8 is further provided with an insertion cavity 87 on both sides thereof. When the plug and the socket are inserted in the forward direction, the axial relative movement of the plug and the socket enables the chimera 75 and the embedding cavity 87 to be matched in a concave-convex mode to achieve the minimum inter-plate distance, namely when the plug is matched with the socket, the socket can slide up and down on the plug to meet the height requirement of any inter-plate, and when the minimum height h is achieved, the plug shell chimera is matched with the embedding cavity of the socket shell. When the plug and the socket are reversely inserted, the axial relative movement of the plug and the socket enables the mosaic body at the plug end to be matched with the stop of the second printed board 4 to realize the minimum inter-board distance. The arrangement of the concave-convex matched chimeric body 75 and the chimeric cavity 87 ensures that the matching of the head seat is more stable and is not easy to shake. According to the utility model, only one BTB plug 1 and one BTB socket 2 are needed, and the lower matching height of the printed circuit board can be realized by arranging the embedded cavity 75 and the embedded body 87, so that the matching height range of the plug and the socket is increased, the development of product types is reduced compared with the prior art, the size of the product is reduced, and the development cost and the development period of the product are reduced.

Preferably, the chimera 75 sets up in plug housing 1 afterbody both sides, and also is connected fixedly with first printed board 3 when plug 1 is connected with first printed board 3 for lateral protrusion in the chimera 75 of plug housing 7 lateral wall has still played the effect that increases plug 1 and pcb board and has combined stably, and further, the chimera 75 sets up 4, sets up respectively in the 4 angular points of plug, has increased the stability of plug and pcb board contact. The BTB plug end chimera 75 is arranged, so that the whole plug is more stable and is not easy to topple when being placed on a printed board, and more terminal contact matching areas are reserved in the middle of the socket shell because the chimera protrudes out of two sides of the socket shell.

In order to facilitate the connection and fixation of the fitting body 75 and the first printed board 3, at least one guide pin is further arranged on the fitting body 75.

When the rear portion of the socket housing still has the turned edge 83, the engaging cavity is disposed on the turned edge 83, but not limited thereto.

When the product of the utility model is used, the power terminal 62 and the signal terminal 61 of the socket 2 are connected with the second printed board 4 through the bottom pin, the upper contact areas of the power terminal 62 and the signal terminal 61 are contacted with the contact area of the plug 1 to realize conduction connection, meanwhile, because of the existence of the four embedding cavities, the four embedding bodies of the plug can be inserted into the embedding cavities, and the lower matching height of the plug and the socket can be realized.

The insertion of the BTB connector comprises the following steps: the first step is as follows: the BTB plug 1 and the socket 2 are respectively connected with the printed board in a conduction way through pins at the bottom of a power supply and signal terminal; the second step is that: guiding and inserting are conducted through the guiding columns 85 at the left end and the right end of the BTB socket 2 and the guiding grooves 73 at the left end and the right end of the plug 1; the third step: along with the continuous guiding and matching of the plug 1 and the socket 2, the upper power supply and signal contact area of the plug terminal 5 is contacted with the contact area of the socket power supply terminal 62 and the signal terminal 61, so that the conduction between the bases is realized; the fourth step: to achieve a lower mating height between the printed boards, the plugs are further plugged together and finally the four mating bodies 75 of the plugs mate with the four mating cavities 87 of the jack housing to achieve a lower mating height between the printed boards.

In order to increase the heat dissipation efficiency of the socket, the two side walls of the socket housing 8 of the present invention are further provided with heat dissipation grooves 88 for enhancing heat dissipation, preferably, the heat dissipation grooves are U-shaped through grooves.

In this embodiment, the receptacle housing 8 has no separate receptacle terminal 6 accommodating chamber, and the receptacle terminals 6 are provided on the side wall 82. The socket terminal 6 is provided with any number of contact points above and a fixing portion for fixing to the side wall 82 and the terminal pin 63 below.

The socket terminal 6 and the plug terminal 5 of the present invention may be a combination of any number of power terminals and signal terminals, may be a combination of only any number of power terminals, and may be a combination of only any number of signal terminals.

The pins arranged at the bottom of the power and signal terminals of the BTB plug 1 and the BTB socket 2 of the present invention can be in the forms of welding, crimping, pasting, etc., but are not limited to the above three forms.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (14)

1. A BTB connector comprising a BTB plug and a BTB socket, characterized in that: plug terminals extending along the plugging direction are assembled on two sides of a plug shell of the BTB plug; the BTB socket comprises a socket shell with an inner cavity with two open ends, and socket terminals assembled in the socket shell form a hollow cavity into which a BTB plug is inserted from the front end or the rear end; when the connector is plugged, any position of the contact area of the plug terminal extending along the axial direction can be in contact conduction with the socket terminal, so that the connector can meet the floating requirements of different heights between the printed boards through the axial relative sliding of the BTB plug and the BTB socket.

2. A BTB connector according to claim 1, wherein the terminal end of the socket terminal in the BTB socket is bent and then connected with the second printed board sleeved outside the socket housing, so that the BTB socket can be inserted with the BTB plug through the front end forward direction or the rear end reverse direction to meet the requirement of large floating between boards.

3. A BTB connector according to claim 2, wherein the socket housing tail is folded outwardly to form a flange, and the socket terminal ends are bent to pass through the terminal pin holes on the flange and connected to the second printed board fixed to the flange.

4. A BTB connector according to claim 2, wherein the BTB socket terminal is provided with at least one contact point for contacting and conducting with the plug contact area at the upper part, a supporting part for fixedly assembling with the socket shell at the lower part, and a bent part for turning over towards the outside of the socket shell and a socket terminal pin for connecting with the second printed board at the tail part.

5. A BTB connector according to claim 1, wherein the socket terminal end is connected to a second printed board fixed to the bottom of the socket housing, the second printed board having a through-slot corresponding to the hollow cavity for the insertion of the plug.

6. A BTB connector according to claim 5, wherein a fitting body is provided on the plug housing of the plug, a fitting cavity is provided on the socket housing, and the plug and the socket realize the limitation of the minimum board distance in the forward insertion through the cooperation of the fitting body and the fitting cavity.

7. A BTB connector according to claim 6, wherein the fitting body is located at the coupling end of the plug housing and the first printed board, and the fitting body can enhance the stable coupling between the plug and the first printed board by the coupling with the first printed board.

8. A BTB connector in accordance with claim 6, wherein the socket housing tail is folded outwardly to form a folded edge for enhancing the connection between the socket and the second printed board, the mating body being located at least partially on the folded edge.

9. A BTB connector according to any of claims 1-8, wherein the socket housing of the BTB socket is free of separate terminal receiving cavities, the socket terminals being fixedly mounted on side walls of the inner cavity of the socket housing.

10. A BTB connector according to any of claims 1-8, wherein a guiding structure is provided between the BTB plug and the BTB socket for guiding the socket in forward or reverse plugging.

11. A BTB connector according to claim 10, wherein the guide structure comprises mating guide posts and guide slots on the plug housing and the receptacle housing, respectively, and guide chamfers on the front end of the plug housing and the front end of the receptacle housing cavity, respectively.

12. A BTB connector according to any of claims 1-8, wherein the plug terminal comprises at least one of a one-piece U-shaped terminal, a two-piece monolithic terminal, and a PCB terminal having a plurality of contact areas.

13. A BTB plug according to any one of claims 1 to 12.

14. A BTB socket according to any one of claims 1 to 12.

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