BTB Plug, BTB Socket and BTB Connector

Abstract

The present invention relates to a BTB plug, a BTB socket and a BTB connector. The BTB connector includes a BTB plug and a BTB socket. Plug terminals extending in the insertion direction are assembled on both sides of the plug housing of the BTB plug; the BTB socket includes a socket housing having a cavity with both ends open, and socket terminals assembled in the socket housing form a hollow cavity for the BTB plug to be inserted. When the connector is inserted, any position of the contact area where the plug terminals extend axially can contact and conduct with the socket terminals, so that the connector can meet the floating requirements of different heights between printed boards through the axial relative sliding of the BTB plug and the BTB socket. The BTB plug and the BTB socket of the present invention can meet the connection between printed boards with different board-to-board heights through axial floating, reduce the types of product development, and save development costs and development cycles.

Description

Technical Field

[0001] The present invention belongs to the technical field of connectors, and in particular relates to a BTB plug, a BTB socket and a BTB connector. Background Art

[0002] To achieve conductive connections between printed circuit boards of varying heights, existing designs rely on developing headers of varying heights to achieve connectivity. However, using plugs or sockets of varying heights to achieve conductive connections between different printed circuit boards results in a wide variety of product models and high development costs. Summary of the Invention

[0003] In order to achieve conductive connection between printed circuit boards of different heights, the present invention designs a new type of BTB structure, which can adapt to different distances between boards through axial floating between the plug and the socket.

[0004] The objectives of the present invention and the technical problems it solves are achieved by adopting the following technical solutions. According to the aforementioned BTB connector proposed in the present invention, it includes a BTB plug and a BTB receptacle. The BTB plug has plug terminals mounted on both sides of its plug housing, extending in the mating direction. The BTB receptacle includes a receptacle housing with an inner cavity open at both ends. The receptacle terminals mounted within the receptacle housing form a hollow cavity for inserting the BTB plug. When the connector is mated, any position along the axially extending contact area of the plug terminals can contact and conduct with the receptacle terminals. This allows the connector to meet floating requirements of different printed circuit boards (PCBs) by axially sliding between the BTB plug and the BTB receptacle.

[0005] The purpose of the present invention and the solution to its technical problems can be further achieved by adopting the following technical measures.

[0006] In the aforementioned BTB connector, the socket housing of the BTB socket does not have an independent terminal accommodating cavity, and the socket terminals are fixedly assembled on the side walls of the inner cavity of the socket housing.

[0007] In the aforementioned BTB connector, the ends of the socket terminals in the BTB socket are bent and connected to the second printed circuit board sleeved outside the socket housing, so that the BTB socket can be plugged into the BTB plug by forward or reverse connection at the front end to achieve the large floating requirement between the boards.

[0008] In the aforementioned BTB connector, the tail of the socket housing is folded outward to form a flange, and the ends of the socket terminals are bent and pass through the terminal pin holes on the flange and connected to the second printed circuit board fixed on the flange.

[0009] The aforementioned BTB connector, wherein a guiding structure for achieving insertion guidance when the BTB plug and the BTB socket are inserted in the forward or reverse direction is provided between the BTB plug and the BTB socket.

[0010] The aforementioned BTB connector, wherein the guiding structure includes adapted guiding columns and guiding grooves respectively located on the plug housing and the socket housing, and guiding chamfers respectively located at the front end of the plug housing and the front and rear ends of the cavity of the socket housing.

[0011] The aforementioned BTB connector, wherein the plug terminals are integral U-shaped terminals, two-piece single-piece terminals or PCB board terminals having multiple contact areas.

[0012] The aforementioned BTB connector, wherein a terminal assembly groove for inserting and assembling the plug terminals is provided on the plug housing.

[0013] The aforementioned BTB connector, wherein at least one contact contact for contacting and conducting with the contact area of the plug is provided above the BTB socket terminal, a supporting portion for fixedly assembling with the socket housing is provided below, a bending portion for turning outward to the socket housing is provided at the tail, and socket terminal pins for connecting with the second printed board are provided.

[0014] The aforementioned BTB connector, wherein the plug terminals and the socket terminals each include at least one of power terminals and signal terminals.

[0015] The object of the present invention and the solution to its technical problems are also achieved by the following technical solutions. A BTB plug according to the present invention is the aforementioned BTB plug.

[0016] The object of the present invention and the solution to its technical problems are further achieved by the following technical solutions. A BTB socket according to the present invention is the aforementioned BTB socket.

[0017] The present invention has obvious advantages and beneficial effects compared with the prior art. By means of the above technical solutions, the present invention can achieve quite high technical progressiveness and practicability, and has wide utilization value in the industry. It has at least the following advantages:

[0018] The BTB plug and the BTB socket of the present invention can meet the connection between printed boards with different inter-board heights through axial floating. The same BTB socket of the present invention can still be inserted into the existing BTB plug in the reverse direction of 180 degrees, realizing the floating requirement of the inter-board height in a larger range, reducing the types of product development, and saving the development cost and development cycle. The floating amount of the connector of the present invention is greater than the socket height. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the plug structure of the BTB connector according to Embodiment 1 of the present invention;

[0020] Figure 2 It is the exploded view of the plug of the BTB connector in Embodiment 1 of the present invention;

[0021] Figure 3 It is the schematic diagram of the pre-connection of the plug of the BTB connector in Embodiment 1 of the present invention and the printed board;

[0022] Figure 4 It is the schematic diagram of the pre-connection of the socket of the BTB connector in Embodiment 1 of the present invention and the printed board;

[0023] Figure 5 It is the schematic diagram of the structure of the socket of the BTB connector in Embodiment 1 of the present invention;

[0024] Figure 6 It is the exploded view of the socket of the BTB connector in Embodiment 1 of the present invention;

[0025] Figure 7 It is the schematic diagram of the forward mating of the head and socket of the BTB connector in Embodiment 1 of the present invention to meet the large pitch between boards;

[0026] Figure 8 It is the schematic diagram of the forward mating of the head and socket of the BTB connector in Embodiment 1 of the present invention to meet the small pitch between boards;

[0027] Figure 9 It is the schematic diagram of the reverse mating of the head and socket of the BTB connector in Embodiment 1 of the present invention to meet the large pitch between boards;

[0028] Figure 10 It is the schematic diagram of the reverse mating of the head and socket of the BTB connector in Embodiment 1 of the present invention to meet the small pitch between boards;

[0029] Figure 11 It is the three-dimensional schematic diagram of the mating of the head and socket of the BTB connector in Embodiment 1 of the present invention;

[0030] Figure 12 It is the bottom schematic diagram of the socket of the BTB connector in Embodiment 1 of the present invention;

[0031] Figure 13 It is the schematic diagram of the power terminal structure of the socket in Embodiment 1 of the present invention;

[0032] Figure 14 It is the schematic diagram of the signal terminal structure of the socket in Embodiment 1 of the present invention;

[0033] Figure 15 It is the schematic diagram of the plug terminal of the BTB connector in Embodiment 1 of the present invention;

[0034] Figure 16 It is the schematic diagram of another plug terminal of the BTB connector in Embodiment 1 of the present invention;

[0035] Figure 17Schematic diagram of another plug structure of the BTB connector according to Embodiment 1 of the present invention;

[0036] Figure 18 is Figure 17 partial exploded view;

[0037] Figure 19 Schematic diagram of the plug structure of the BTB connector according to Embodiment 2 of the present invention;

[0038] Figure 20 Another view of the plug of the BTB connector according to Embodiment 2 of the present invention;

[0039] Figure 21 Exploded view of the plug of the BTB connector according to Embodiment 2 of the present invention;

[0040] Figure 22 Schematic diagram of the pre-connection of the plug of the BTB connector according to Embodiment 2 of the present invention and a printed board;

[0041] Figure 23 Schematic diagram of the socket structure of the BTB connector according to Embodiment 2 of the present invention;

[0042] Figure 24 Schematic diagram of the pre-connection of the socket of the BTB connector according to Embodiment 2 of the present invention and a printed board;

[0043] <' Figure 25 Exploded view of the socket of the BTB connector according to Embodiment 2 of the present invention;

[0044] Figure 26 Reverse view of the socket of the BTB connector according to Embodiment 2 of the present invention;

[0045] Figure 27 Schematic diagram of the power terminal structure of the socket of the BTB connector according to Embodiment 2 of the present invention;

[0046] Figure 28 Schematic diagram of the signal terminal structure of the socket of the BTB connector according to Embodiment 2 of the present invention;

[0047] Figure 29 Schematic diagram of the forward insertion of the BTB connector according to Embodiment 2 of the present invention to meet the large distance between boards;

[0048] Figure 30 Schematic diagram of the forward mating of the BTB connector according to Embodiment 2 of the present invention to meet the small distance between boards;

[0049] Figure 31 Stereo schematic diagram of the forward insertion of the BTB connector according to Embodiment 2 of the present invention.

[0050]

Description of Main Element Symbols

[0051] 1: BTB plug

[0052] 2: BTB Socket

[0053] 3: First PCB Board

[0054] 4: Second PCB Board

[0055] 5: Plug Terminal

[0056] 51: Plug Signal Terminal

[0057] 52: Plug Power Terminal

[0058] 53: Contact Area

[0059] 54: PCB Board Terminal

[0060] 55: Two-Body Monolithic Terminal

[0061] 56: U-Shaped Terminal

[0062] 57: Plug Terminal Pin

[0063] 6: Socket Terminal

[0064] 61: Socket Signal Terminal

[0065] 611: Signal Contact Contact

[0066] 612: Signal Fixing Part

[0067] 613: Signal Bending Point

[0068] 62: Socket Power Terminal

[0069] 621: Power Contact Contact

[0070] 622: Power Fixing Part

[0071] 623: Power Bending Point

[0072] 63: Socket Terminal Pin

[0073] 7: Plug Housing

[0074] 71: Terminal Assembly Groove

[0075] 72: Limiting Part

[0076] 73: Guide Groove

[0077] 74: Spacing Projection

[0078] 75: Chimera

[0079] 8: Socket Housing

[0080] 81: Intermediate Cavity

[0081] 82: Side Wall

[0082] 83: Flanging

[0083] 84: Terminal Pin Perforation

[0084] 85: Guide Post

[0085] 86: Guide Chamfer

[0086] 87: Fitting Cavity

[0087] 88: Heat Dissipation Groove Detailed Embodiment

[0088] To further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following combines the accompanying drawings and preferred embodiments to detail the specific embodiments, structures, features and effects of the BTB connector proposed according to the present invention as follows.

[0089] Please refer to Figure 1-19 , which is a schematic diagram of the structures of various parts of the BTB connector according to Embodiment 1 of the present invention. The connector includes a BTB plug 1 and a BTB socket 2. The BTB plug 1 includes a plug housing 7. An axially extending plug terminal 5 is assembled on the outer side of the plug housing 7. The plug terminal 5 includes a contact area 53 positioned and assembled on the outer side of the plug housing 7 and a plug terminal pin 57 extending from the tail of the plug housing 7 for adaptively connecting with the first printed board 3. The BTB plug 1 of the present invention realizes contact conduction with the socket terminal 6 in the BTB socket 3 through the contact area 53 of its plug terminal 5. Since the contact area 53 is a long section extending axially, the BTB plug 1 can float within a large range axially relative to the BTB socket 3, so as to meet the connection requirements between printed boards within a large pitch range.

[0090] The plug housing 7 of the BTB plug 1 of the present invention is a fixed body. Plug terminals 5 are arranged on both sides of the fixed body, and the terminal contact area 53 is exposed to realize contact conduction with the socket end contact member.

[0091] In the embodiment of the present invention, adjacent plug terminals 5 are separated by a positioning wall 74 on the side wall of the plug housing 7 that is higher than the surface of the plug terminal 5. A terminal assembly groove 71 for adaptively inserting the plug terminal 5 is formed between adjacent positioning walls 74. The terminal assembly groove 71 can at least realize the horizontal limit of the plug terminal, so as to realize the positioning and assembly between the plug terminal 5 and the plug housing 7.

[0092] The plug of the present invention assembles different plug terminal structures according to the structure of the plug housing 7, thereby reducing the assembly difficulty and processing difficulty, improving the assembly efficiency, and saving the processing and assembly costs.

[0093] In an embodiment of the present invention, the plug terminal 5 is an integral U-shaped terminal 56. The two vertical parts of the U-shaped terminal 56 are respectively located in the terminal assembly grooves 71 on both sides of the plug housing 7, and the bent part connecting the two vertical parts is in limit fit with the front end face of the plug housing 7. Preferably, the adjacent bent parts are also spaced by a positioning wall 74 convexly provided on 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 part of the U-shaped terminal 56.

[0094] In another embodiment of the present invention, the plug terminal 5 is a two-piece single-chip terminal 56. The two-piece single-chip terminal 56 is guided and assembled in the terminal assembly grooves 71 on both sides of the plug housing 7, and horizontal limitation is achieved through the positioning walls 74 on both sides of the terminal assembly groove 71. Preferably, positioning protrusions 562 for blocking and cooperating with the positioning protrusions on both sides of the terminal assembly groove 71 to achieve vertical positioning are provided on both sides of the two-piece single-chip terminal 56. The above two-piece single-chip terminals 56 are both provided with pin structures at the bottom and contact areas at the upper part. Preferably, the front end of the two-piece single-chip terminal 56 further has a fold 561 for cooperating with and limiting the front end of the terminal assembly groove 71, but it is not limited thereto.

[0095] In still another embodiment of the present invention, the plug terminal 5 is a PCB board contact end 54. The PCB board contact terminal 54 is a PCB board provided with a plurality of contact areas 53, and the bottom of the corresponding contact area 53 of the PCB board is connected with a plug terminal pin 57.

[0096] In yet another embodiment of the present invention, the plug terminal 5 includes at least two of an integral U-shaped terminal, a two-piece single-chip terminal, and a PCB board contact terminal. That is, in this embodiment, the plug terminal 5 on the plug is composed of terminals of at least two structural forms.

[0097] The plug terminal 5 is connected to the first printed board 3 through the plug terminal pin 57. In order to enhance the plugging stability of the plug terminal pin 57, a limiting part 72 for closing the terminal assembly groove 71 and enhancing the horizontal limitation of the terminal 5 is further provided at the tail of the plug housing 7 of the present invention. The limiting part 72 and the positioning wall 74 cooperate to form a cavity for accommodating the plug terminal. In the embodiment of the present invention, the limiting part 72 protrudes from the positioning wall 74, but it is not limited thereto.

[0098] 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. During use, the power terminal 52 and the signal terminal 51 are connected to the first printed board 3 through the terminal pins 57 at the bottom, and the upper contact area 53 contacts the socket contact area to achieve conduction connection.

[0099] The BTB receptacle 2 comprises a receptacle housing 8 and receptacle terminals 6 mounted within the housing. The housing 8 defines an axially extending cavity with both ends open. The receptacle terminals 6 are symmetrically arranged on either side of the cavity, forming a central cavity 81 for insertion of the BTB plug 1 and for contact and electrical communication with the contact areas of the plug's outer terminals. The rear end of the housing 8 is folded outward to form a flange 83. This flange 83 is provided with terminal pin holes 84 for the receptacle terminal pins 63 of the receptacle terminals 6 to pass through. The receptacle terminal pins 63 of the receptacle terminals 6, secured within the housing 8, extend out of the housing 8 through these terminal pin holes 84 and connect to the second printed circuit board 4 fixed to the flange 83. In this embodiment of the present invention, the second printed circuit board 4 is positioned around the outer periphery of the housing 8 through a central aperture for the front end of the housing 8 to pass through, and is retained by the flange 83 at the rear end of the housing 8.

[0100] In the embodiment of the present invention, there is no independent socket terminal accommodating cavity on the socket housing 8 , and the socket terminals 6 are arranged on the side wall 82 .

[0101] Due to the above-described structural design, the BTB socket 2 of the present invention connects the two by mating at its front or rear end with the front end of the BTB plug 1. A guide structure is provided between the BTB socket 2 and the BTB plug 1 to guide the mating of the two. Preferably, the guide structure comprises a matching guide post 85 and guide slot 73. In this embodiment of the present invention, the guide posts 85 are cylindrical protrusions located at both ends of the intermediate cavity 81 and extending axially along the socket to the front and rear ends of the socket housing. The guide slot 73 is an axially extending groove structure located at both ends of the plug housing 7. When the connector is mated, regardless of whether the plug and socket are mated at the front or rear end (the socket is inserted forward or backward), the guide posts and guide slots cooperate to ensure proper mating. Preferably, the front and rear end surfaces of the plug housing are each provided with a guide chamfer 86 for guiding the mating with the front chamfer of the plug housing.

[0102] When the BTB plug of the present invention is matched with the BTB socket, the BTB plug passes through the middle cavity of the BTB socket and the second PCB board to slide up and down, thereby meeting the large floating requirement of different heights between printed circuit boards. Figure 7 and Figure 8 This is a schematic diagram of the connector assembly when the plug and socket are mated in the forward direction. At this time, the socket can slide up and down on the plug to meet any board height requirements and can meet the extremely low board spacing H2 requirements. The BTB socket can be flipped 180 degrees horizontally and mated with the plug in the reverse direction. The socket can still slide up and down on the plug to meet any board height requirements, such as Figure 9 and Figure 10As shown in the figure. The connector of the present invention can still be inserted into the existing BTB plug in reverse by 180 degrees through the same BTB socket, achieving a larger height H3 between printed circuit boards, reducing the types of product development, and saving development costs and development cycles.

[0103] The opening width at the front end of the plug housing of the present invention is smaller than the width at the rear end of the mouth, which is more conducive to the assembly of the socket terminals. Also, when the connector is inserted into the socket in the forward direction, the limiting portion 72 on the plug housing can enter the socket housing, meeting the requirement of an extremely low board-to-board spacing H2; while when inserted in the forward direction, the limiting portion 72 on the plug housing cannot enter the socket housing, so the minimum board-to-board spacing it can achieve is only H4. When there is no limiting portion 72 on the plug housing, the connector of the present invention can achieve a board-to-board spacing requirement less than H4 when inserted into the socket in the reverse direction.

[0104] The upper part of the socket terminal 6 is a contact area provided with at least one contact contact for contacting and conducting with the plug terminal 5, the lower part is a support portion for fixedly assembling with the socket housing 8 and providing support for the contact area, and the bottom is provided with a bending portion for extending the tail of the terminal towards the flanging 83 and making the socket terminal pin 63 protrude from the terminal pin through-hole on the flanging.

[0105] 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 sequentially includes a contact area, a signal fixing portion 612, a signal bending portion 613, and a socket terminal pin 63 from front to back. The contact area is provided with at least one signal contact contact 611. The socket power terminal 62 sequentially includes a contact area, a power fixing portion 622, a power bending portion 623, and a socket terminal pin 63 from front to back. The contact area is provided with at least one power contact contact 621. When the product is used, the BTB plug 1 is connected to the first printed circuit board through the bottom pins of the power and signal terminals, and then the upper contact area of the terminal contacts the contact areas of the socket power terminal and the socket signal terminal to achieve conduction between the head and the socket. The bottom pins of the socket power terminal and the socket signal terminal are connected to the second printed circuit board connector, thereby finally achieving conduction between the two printed circuit boards through the connector.

[0106] Please refer to Figure 19-31 , which is a schematic diagram of the structures of various parts of the BTB connector according to Embodiment 2 of the present invention. The plug 1 of the present invention is a fixed body, and contact terminals are provided on both sides of the fixed body, with the terminal contact areas exposed. The socket 2 has an insertion cavity with both ends open, so that it can achieve forward and reverse insertion with the plug 1.

[0107] In this embodiment, the socket terminals 6 within the BTB socket 2 are no longer bent but are arranged straight up and down. The socket terminal pins 63 of the socket terminals 6 extend from the rear end of the socket 2 and are connected to the second printed circuit board 4 fixed to the end face of the rear end of the socket. That is, in this embodiment, the PCB board of the socket is arranged below the socket. To achieve forward and reverse insertion of the plug 1 and the socket 2 of the present invention, the second printed circuit board 4 fixed to the end face of the rear end of the socket is provided with a through slot 41 corresponding to the intermediate cavity 81 formed by the socket terminals in the socket 2 and for the plug 1 to pass through.

[0108] In this embodiment, since the socket terminals 6 are arranged vertically and the second printed circuit board 4 is located on the rear end surface of the socket, the rear end of the socket housing 8 does not need to be provided with a flange 83. This can reduce the footprint of the socket 2 and facilitate miniaturization. The socket housing 8 of the present invention can also be provided with a flange 83 at the rear end to further stabilize its connection with the second printed circuit board 4.

[0109] In this embodiment, to limit the minimum inter-board distance when the plug 1 and the socket 2 are mated, the plug 1 is further provided with a chimera 75 on both sides of the plug housing, and the socket housing 8 is further provided with a matching chimera 87 on both sides. When the plug and socket are mated in the forward direction, the axial relative movement of the plug and socket allows the chimera 75 and the chimera 87 to engage in a concave-convex fit to achieve the minimum inter-board distance. That is, when the plug and socket are mated, the socket can slide up and down on the plug to meet any inter-board height requirement. When the minimum height h is reached, the chimera of the plug housing engages with the chimera cavity of the socket housing. When the plug and socket are mated in the reverse direction, the axial relative movement of the plug and socket allows the chimera at the plug end to engage with the stopper of the second printed circuit board 4 to achieve the minimum inter-board distance. The provision of the chimera 75 and chimera 87 with a concave-convex fit makes the mating of the header more stable and less prone to shaking. The present invention only requires one BTB plug 1 and one BTB socket 2. By providing the interlocking cavity 75 and the interlocking body 87, a lower printed circuit board mating height can be achieved, thereby increasing the mating height range of the plug and socket. Compared with the prior art, the development of product types is reduced, the product size is reduced, and the product development cost and development cycle are shortened.

[0110] Preferably, the chimeras 75 are positioned on either side of the rear end of the plug housing 1 and are also connected and secured to the first printed circuit board 3 when the plug 1 is connected to the first printed circuit board 3. The chimeras 75, which protrude laterally from the sidewalls of the plug housing 7, also stabilize the connection between the plug 1 and the printed circuit board. Furthermore, four chimeras 75 are provided, one at each of the four corners of the plug, further enhancing the stability of the contact between the plug and the printed circuit board. The provision of the chimeras 75 on the BTB plug end of the present invention makes the entire plug more stable when placed on the printed circuit board, preventing it from tipping over. Furthermore, because the chimeras protrude from both sides of the socket housing, more terminal contact area is left in the middle.

[0111] To facilitate the connection and fixation of the chimeric body 75 to the first printed circuit board 3, at least one guide pin is further provided on the chimeric body 75.

[0112] When a flange 83 is still provided at the tail of the socket housing, the fitting cavity is wholly or partly provided on the flange 83, but is not limited thereto.

[0113] When the product of the present invention is in use, the power terminals 62 and signal terminals 61 of the socket 2 are connected to the second printed circuit board 4 through the bottom pins. The upper contact areas of the above-mentioned power terminals 62 and signal terminals 61 are in contact with the contact areas of the plug 1, achieving conduction connection. At the same time, due to the existence of the four fitting cavities, the four chimeric bodies of the plug can be inserted into the fitting cavities, and thus the plug and the socket can achieve a lower mating height.

[0114] The mating of the BTB connector of the present invention includes the following steps: The first step: The BTB plug 1 and the socket 2 are respectively conductively connected to the printed circuit board through the bottom pins of the power and signal terminals; The second step: The guiding columns 85 at the left and right ends of the BTB socket 2 and the guiding grooves 73 at the left and right ends of the plug 1 are used to guide the mating first; The third step: As the plug 1 and the socket 2 are continuously guided and mated, the upper power and signal contact areas of the plug terminals 5 are in contact with the contact areas of the socket power terminals 62 and signal terminals 61, achieving conduction between the plug and the socket; The fourth step: To achieve a lower mating height between the printed circuit boards, the plug is further inserted, and finally the four chimeric bodies 75 of the plug are mated with the four fitting cavities 87 of the socket housing, thereby achieving a lower mating height between the printed circuit boards.

[0115] To increase the heat dissipation efficiency of the socket, heat dissipation grooves 88 for enhancing heat dissipation are further provided on the two side walls of the socket housing 8 of the present invention. Preferably, the heat dissipation groove is a U-shaped through groove.

[0116] In this embodiment, there is no independent accommodation cavity for the socket terminals 6 on the socket housing 8, and the socket terminals 6 are provided on the side wall 82. Any number of contact contacts are provided above the socket terminals 6, and a fixing portion for fixing on the side wall 82 and terminal pins 63 are provided below.

[0117] The socket terminals 6 and the plug terminals 5 of the present invention can be a mixture of any number of power terminals and signal terminals loaded, or only any number of power terminals can be loaded, or only any number of signal terminals can be loaded.

[0118] The pins provided at the bottoms 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, soldering, etc., but are not limited to the above three forms.

[0119] The above are only the preferred embodiments of the present invention and do not impose any formal limitations on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the relevant art can make some changes or modifications within the scope of the technical solution of the present invention to obtain equivalent embodiments with equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A BTB connector, comprising a BTB plug and a BTB socket, characterized in that: The BTB plug is equipped with plug terminals extending in the mating direction on both sides of its plug housing. The BTB receptacle includes a receptacle housing with an open-ended inner cavity. The receptacle terminals assembled within the receptacle housing form a hollow cavity into which the BTB plug can be inserted from either the front or rear end. When the connector is mated, any position of the axially extending contact area of the plug terminals can contact and conduct with the receptacle terminals, enabling the connector to meet floating requirements of different heights between printed circuit boards through axial relative sliding between the BTB plug and the BTB receptacle. The distal ends of the receptacle terminals are connected to a second printed circuit board fixed to the receptacle housing. This second printed circuit board has through slots at positions corresponding to the hollow cavity in the receptacle housing, facilitating insertion of the BTB plug into the hollow cavity of the BTB receptacle from either the front or rear end. The distal ends of the receptacle terminals within the BTB receptacle are bent and connected to the second printed circuit board mounted outside the receptacle housing, enabling the BTB receptacle to achieve high floating requirements between the boards by mating with the BTB plug in the forward or reverse direction.

2. The BTB connector according to claim 1, wherein: The tail of the socket shell is folded outward to form a flange, and the ends of the socket terminals are bent and pass through the terminal pin holes on the flange and are connected to the second printed circuit board fixed on the flange.

3. The BTB connector according to claim 1, wherein: The socket terminal is provided with at least one contact point above and for conducting with the contact area of the BTB plug, a support portion below and for fixing the socket terminal to the socket housing, and a bend at the tail for folding outwards of the socket housing and a socket terminal pin for connecting to the second printed circuit board.

4. The BTB connector according to claim 1, wherein: The plug housing of the BTB plug is provided with a chimera, and the socket housing is provided with a chimera cavity. The BTB plug and the BTB socket achieve the limitation of the minimum board spacing during positive insertion through the cooperation of the chimera and the chimera cavity.

5. The BTB connector according to claim 4, wherein: The chimera is located at the joint end of the plug housing and the first printed circuit board, and the chimera can enhance the stable connection between the BTB plug and the first printed circuit board by combining with the first printed circuit board.

6. The BTB connector according to claim 4, wherein: The tail portion of the socket housing is folded outward to form a flange for strengthening the connection between the BTB socket and the second printed circuit board, and the chimeric body is at least partially located on the flange.

7. The BTB connector according to any one of claims 1 to 6, characterized in that: The socket housing of the BTB socket does not have an independent terminal accommodating cavity, and the socket terminals are fixedly assembled on the side walls of the inner cavity of the socket housing.

8. The BTB connector according to any one of claims 1 to 6, wherein: A guide structure is provided between the BTB plug and the BTB socket for guiding the BTB socket when the BTB socket is plugged in forward or reverse direction.

9. The BTB connector according to claim 8, wherein: The guide structure includes adapted guide columns and guide grooves respectively located on the plug housing and the socket housing, and guide chamfers respectively located at the front end of the plug housing and the front and rear ends of the socket housing cavity.

10. The BTB connector according to any one of claims 1 to 6, characterized in that: The plug terminal includes at least one of an integral U-shaped terminal, a two-piece single-piece terminal, and a PCB terminal with multiple contact areas.

11. A BTB plug, characterized in that: It is the BTB plug described in any one of claims 1-10.

12. A BTB socket, characterized in that: It is the BTB socket described in any one of claims 1-10.

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