Double-contact floating board-to-board connector

Abstract

The utility model relates to a double-contact floating board-to-board connector in the connector field, which comprises a fixed seat and a floating seat arranged in the fixed seat, an accommodating cavity used for inserting the floating seat is formed in the fixed seat, the floating seat is inserted in the accommodating cavity, a butt joint groove used for butt joint is arranged in the middle of the floating seat, and the floating seat is arranged in the butt joint groove. The floating seat is connected with a floating terminal in an inserting manner, the floating seat is provided with a groove structure used for inserting the floating terminal in a paired manner, and the floating terminal is provided with a contact part, an inserting part, an elastic part, a limiting part and a terminal welding part in sequence through bending. According to the utility model, the assembling convenience of the floating terminal and the floating deformable area are further enhanced, the stability and reliability of connection are ensured, good contact is ensured through the double contact planes of the contact part, and the problems of poor contact, installation and the like in a traditional connector are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of connectors, specifically to a dual-contact floating board-to-board connector. Background Technology

[0002] Board-to-board connectors, as core components for electrical connections between circuit boards within electronic devices, have a wide range of applications, including but not limited to communication equipment, consumer electronics, automotive electronics, industrial automation, medical devices, and military manufacturing. As electronic products trend towards miniaturization and lightweight design, the design of board-to-board connectors is constantly being improved to adapt to more complex application environments and higher performance requirements.

[0003] Existing floating board-to-board connectors are mainly used to address the effects of substrate assembly positional deviations and external vibrations. Common solutions include, but are not limited to, the following: First, by incorporating elastic elements inside the connector, allowing it to move freely within a certain range and thus absorb assembly errors; second, by employing special pin designs that enable the pins to automatically adjust their position during mating; third, by optimizing the connector's structural design, such as adding foolproof structures to ensure correct insertion and removal directions and reduce the possibility of misoperation; and fourth, by improving the injection molding process to enhance the overall quality and stability of the connector.

[0004] However, existing floating board-to-board connectors still have some shortcomings. First, the contact surface of existing board-to-board connectors is relatively simple. Under long-term high-frequency vibration, the contact part of the floating terminal is prone to displacement or breakage, resulting in poor contact or even complete failure. Second, the existing floating terminal is relatively simple, and the insertion and installation effect of the slot on the existing floating seat and the floating terminal is poor. This results in poor ease and stability of assembly, pressing, and connection of the floating terminal and the floating seat. In addition, the floating part of the terminal inside the existing connector is difficult to achieve stable positioning and floating over a large range of deformation areas. This makes the connector perform poorly in actual use. These problems limit the widespread promotion and use of existing floating board-to-board connectors in high-performance applications. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned defects and provide a dual-contact floating board-to-board connector. This solves the technical problems in the prior art where the contact plane of the existing board-to-board connector is set in a simple way, and the terminals are difficult to achieve stable positioning and a large range of floating. This results in poor contact and poor floating performance due to positional deviations in the actual use of the connector.

[0006] The objective of this utility model is achieved through the following means:

[0007] A dual-contact floating board to board connector includes a fixed base and a floating base disposed within the fixed base. The fixed base has an internal cavity for inserting the floating base. The floating base is inserted into the cavity. A mating groove for mating is provided in the middle of the floating base. Several floating terminals are connected to the floating base by insertion. The floating base has a groove structure for mating the inserted floating terminals.

[0008] The floating terminal is also provided with a signal contact part, a plug-in part, an elastic part, a limiting part and a terminal welding part in sequence by bending. The contact part includes a first contact part, a bent contact part and a second contact part formed in sequence by bending. The first contact part and the second contact part are arranged opposite to each other to form a double contact plane. The bent contact part is located between the first contact part and the second contact part. The middle part of the bent contact part is provided with a pressure block with protruding sides. The end of the first contact part is formed with an insertion part. The end of the second contact part away from the first contact part extends by bending and is connected to the plug-in part. The side of the plug-in part extends outward and forms an outwardly protruding stepped shoulder with the plug-in part and the elastic part.

[0009] The groove structure on the floating base includes a snap-fit ​​groove and a plug-in groove. The floating terminal is paired and inserted with the snap-fit ​​groove and plug-in groove on the floating base through the contact part and the plug-in part. The snap-fit ​​groove includes a first snap-fit ​​groove, a positioning groove and a second snap-fit ​​groove that are interconnected. The first snap-fit ​​groove is formed on the inner wall of the mating groove. The inner wall of the mating groove is formed with an insertion groove that communicates with the second snap-fit ​​groove, so that the first contact part is paired and inserted into the first snap-fit ​​groove and is embedded and paired with the insertion groove through the insertion part. The positioning groove and the second snap-fit ​​groove are formed on the outer surface of the floating base. The second snap-fit ​​groove is arranged opposite to the first snap-fit ​​groove.

[0010] Furthermore, as described above, the top of the floating seat has a mating protrusion, a mating groove is provided in the middle of the mating protrusion, a second slot is provided on the outer side of the mating protrusion, and one end of the second slot extends to the bottom and communicates with the insertion slot. The insertion slot is provided on the outer side of the floating seat, and the width of the insertion slot is greater than that of the second slot.

[0011] The connector in this solution is a board-to-board connector male end. Through the mating protrusion on the floating seat and the mating groove set on the mating protrusion, the mating and installation with the female end is more stable and reliable, which improves the assembly accuracy and reliability of the connector, reduces incorrect connection caused by misoperation, and thus improves product quality and user experience.

[0012] Furthermore, the floating seat has symmetrically arranged limiting feet on both sides, one end of the limiting foot extends outward to form a limiting protrusion, and the fixed seat has a retaining groove for matching and retaining the limiting protrusion. The floating seat is inserted into the receiving cavity through the limiting foot, so that the limiting protrusion on the limiting foot is matched with the retaining groove. The inner side of the floating seat is provided with a reinforcing rib that connects with the limiting foot.

[0013] The symmetrically arranged limiting feet and limiting protrusions on both sides of the floating seat enable the floating seat to be positioned and installed with the fixed seat, preventing the floating seat from shifting laterally due to external impact or vibration. This solution ensures that the floating seat moves stably within the receiving cavity through the cooperation of the limiting protrusions and the retaining groove, preventing misalignment caused by external vibration or impact and improving the overall reliability of the connector.

[0014] The connection design between the limiting foot and the inner reinforcing rib of the floating seat greatly improves the overall structural strength of the floating seat, prevents the floating seat from deforming due to long-term stress, and ensures stable contact between the floating terminal and the docking component. At the same time, the reinforcing rib can optimize the deformation resistance of the limiting foot and make the relevant dimensions more accurate.

[0015] Furthermore, as described above, the width of the plug portion is greater than that of the contact portion and the elastic portion. The plug portions are paired and inserted into the plug groove to form a locking and limiting position. The side of the plug portion is provided with a first plug protrusion, a second plug protrusion and a third plug protrusion with progressively decreasing protrusion amplitude. The first plug protrusion, the second plug protrusion and the third plug protrusion are arranged in a stepped shape.

[0016] The first, second, and third insertion protrusions on the side of the insertion part form a stepped structure. The progressively decreasing protrusion width creates a progressive holding effect when the floating terminal is inserted into the insertion slot, improving the ease of assembly of the floating terminal through the insertion part and the insertion slot. The multi-level holding also enhances the insertion part's resistance to pull-out, solving the problem of poor insertion stability in traditional structures. At the same time, the increased width of the insertion part allows it to be embedded in the insertion slot, increasing the deformable area of ​​the floating part.

[0017] Furthermore, in the above description, the relative arrangement of the first contact portion and the second contact portion results in the formation of a first contact plane and a second contact plane on the outer surfaces of the first contact portion and the second contact portion, respectively. The pressure block is disposed on the bending contact portion, and the width of the pressure block is greater than that of the bending contact portion.

[0018] By forming a double contact plane through the opposing arrangement of the first and second contact portions, a dual contact point design is achieved, increasing the contact area between the floating terminal and the mating component. At the same time, the widening of the pressure block facilitates the insertion and connection of the floating terminal into the groove structure on the floating seat. The dual contact point setting and the widened pressure block setting can maintain stable contact pressure even in high-frequency vibration environments, avoiding the signal interruption problem caused by contact surface wear or misalignment in traditional single contact point structures, thus improving the contact reliability and performance of the connector.

[0019] Furthermore, as described above, the positioning groove is provided on the top surface of the mating protrusion, the bent contact portion is pressed into the positioning groove, the inner wall of the positioning groove is provided with a positioning protrusion for holding the side of the pressing block, and a pressing groove for mating pressing blocks is formed in the middle of the positioning groove.

[0020] The inner wall of the positioning groove is equipped with positioning protrusions and pressing grooves. Through the locking action of the positioning protrusions and the side of the pressing block, the floating terminal is accurately positioned within the floating seat. After the pressing block is pressed into the positioning groove, the limiting effect of the positioning protrusions on the side of the pressing block effectively prevents the floating terminal from twisting or shifting due to external forces, solving the problem of low positioning accuracy in traditional structures. Furthermore, the widened pressing block facilitates the installation of the floating terminal and the floating seat, ensuring that the floating terminal maintains accurate alignment with the mating parts throughout the floating process.

[0021] Furthermore, as described above, the connection between the first contact portion and the bent contact portion and the second contact portion extends in a "U" shape, and the width of the insertion portion is smaller than that of the first contact portion.

[0022] The first contact part, the bent contact part, and the second contact part are connected to form a "U" shape, which enhances the installation stability of the contact part and the floating seat and increases the contact area due to the U-shaped setting. The design of the insertion part being narrower than the first contact part guides the floating terminal when it is inserted into the slot, making the insertion of the narrowed insertion end smoother, reducing assembly difficulty, and preventing the floating terminal contact part from lifting due to the embedded insertion part and the insertion slot.

[0023] Further, as described above, the elastic part includes a first elastic floating part, a second elastic floating part, a third elastic floating part, and a fourth elastic floating part arranged sequentially. The end of the first elastic floating part away from the second elastic floating part is connected to the insertion part, and the end of the fourth elastic floating part away from the third elastic floating part is connected to the limiting part. Through the mating connection between the floating seat and the fixed seat, the elastic part is located in the receiving cavity.

[0024] The elastic part adopts a four-segment floating structure, which achieves a wide range of floating compensation through segmented elastic deformation. This increases the length that can float and deform within a limited space, solving the problems of small floating range and unstable positioning of traditional structures, and ensuring that the connector can maintain stable electrical connection performance in complex displacement scenarios.

[0025] The elastic part allows for a certain range of movement between the male and female connectors, further enhancing the connector's adaptability and reliability when subjected to external impacts or vibrations.

[0026] One end of the terminal welding part is connected to the elastic part, and the other end of the terminal welding part extends outward from the bottom of the fixing base, which facilitates subsequent welding operations, simplifies the assembly process, and improves production efficiency.

[0027] Furthermore, the inner side of the receiving cavity is provided with a limiting groove for the mating holding limiting part. The limiting part includes a first limiting protrusion, a second limiting protrusion and a third limiting protrusion with progressively increasing protrusion width. The first limiting protrusion, the second limiting protrusion and the third limiting protrusion extend toward the terminal welding part in sequence.

[0028] The limiting part is equipped with first to third limiting protrusions, forming a multi-level limiting structure through a progressively increasing protrusion width. When the floating seat floats within the fixed seat, the limiting protrusions engage with the limiting grooves on the inner wall of the receiving cavity step by step. This ensures the floating seat's freedom of movement while preventing excessive displacement through multi-level limiting, thus solving the problem of uncontrollable floating range in traditional structures and improving the safety of connector use.

[0029] Furthermore, as described above, the outer side of the fixing base is connected to a fixing plate for welding installation, and the outer side of the fixing base is provided with a fixing slot for mating and installing the fixing plate.

[0030] The mounting base is equipped with a mounting plate and a mounting slot on the outside. The mounting slot allows for precise positioning of the mounting plate, enabling stable soldering and installation of the connector on the board.

[0031] The beneficial effects of this utility model are:

[0032] 1. The floating terminal is inserted by matching the contact part with the slot, and can be easily pressed into the positioning slot by the pressure block on the bent contact part. At the same time, the floating terminal is guided by the insertion slot on the insertion part and the floating seat, which further enhances the convenience of floating terminal assembly, improves production efficiency, and improves the floating terminal's anti-interference ability when subjected to external impact or vibration. The first contact part and the second contact part form opposite double contact planes, which ensure good contact between the floating terminal and the external docking part, achieves high-precision positioning, and enhances the overall stability and reliability.

[0033] 2. The stepped shoulder extending outward from the side of the plug-in part and the insertion structure of the plug-in groove facilitate the insertion of the floating terminal through the mating of the plug-in part and the plug-in groove. At the same time, the outward protrusion of the stepped shoulder makes it limit the insertion with the plug-in groove and increases the deformable area of ​​the floating terminal, improving the use effect of the floating function and further enhancing the working performance of the connector. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure in the first direction of this embodiment;

[0035] Figure 2 for Figure 1 A magnified view of part A in the diagram;

[0036] Figure 3This is a schematic diagram of the overall structure in the second direction of this embodiment;

[0037] Figure 4 This is an exploded view of this embodiment;

[0038] Figure 5 This is a sectional perspective view of this embodiment;

[0039] Figure 6 This is a cross-sectional plan view of this embodiment;

[0040] Figure 7 This is a schematic diagram of the floating seat in this embodiment;

[0041] Figure 8 This is a schematic diagram of the floating terminal in this embodiment;

[0042] Figure 9 This is a perspective view illustrating the usage state of this embodiment;

[0043] Figure 10 This is a cross-sectional view of the usage state in this embodiment;

[0044] The reference numerals in the figure are as follows:

[0045] 100-Fixed base, 101-Receiving cavity, 102-Limiting groove, 103-Holding groove, 104-Fixed slot;

[0046] 200-Floating seat, 201-Mating protrusion, 202-Mating groove, 203-Snap-fit ​​groove, 2031-First snap-fit ​​groove, 2032-Positioning, 2033-Second snap-fit ​​groove, 204-Plug-in groove, 205-Insertion groove, 206-Limiting foot, 207-Limiting protrusion, 208-Reinforcing rib, 209-Positioning protrusion, 210-Pressure groove;

[0047] 300-Floating terminal, 301-Contact portion, 3011-First contact portion, 3012-Bent contact portion, 3013-Second contact portion, 302-Plug-in portion, 3021-First plug-in protrusion, 3022-Second plug-in protrusion, 3023-Third plug-in protrusion, 303-Elastic portion, 3031-First elastic floating portion, 3032-Second elastic floating portion, 3033-Third elastic floating portion, 3034-Fourth elastic floating portion, 304-Limiting portion, 3041-First limiting protrusion, 3042-Second limiting protrusion, 3043-Third limiting protrusion, 305-Terminal welding portion, 306-Pressure block, 307-Insertion portion; 400-Fixing piece;

[0048] 500 - Connector female, 501 - Power terminal, 502 - Holding part, 503 - Spring arm part, 504 - Inward folding part, 505 - Contact point. Detailed Implementation

[0049] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0050] In this embodiment, refer to Figures 1-10 The specific implementation of the dual-contact floating plate to plate connector includes a fixed base 100 and a floating base 200 disposed in the fixed base 100. The fixed base 100 has a receiving cavity 101 for inserting the floating base 200. The floating base 200 is inserted into the receiving cavity 101. The middle part of the floating base 200 is provided with a mating groove 202 for mating. Several floating terminals 300 are connected to the floating base 200 by insertion. The floating base 200 is provided with a groove structure for mating and inserting the floating terminals 300.

[0051] The floating terminal 300 also includes a signal contact portion 301, a plug-in portion 302, an elastic portion 303, a limiting portion 304, and a terminal welding portion 305, which are sequentially arranged by bending. The contact portion 301 includes a first contact portion 3011, a bent contact portion 3012, and a second contact portion 3013, which are sequentially formed by bending. The first contact portion 3011 and the second contact portion 3013 are arranged opposite each other to form a double contact plane. The bent contact portion 3012 is disposed between the first contact portion 3011 and the second contact portion 3013. The middle part is provided with pressure blocks 306 with protrusions on both sides. The end of the first contact part 3011 forms an insertion part 307. The end of the second contact part 3013 away from the first contact part 3011 is extended by bending and connected to the plug-in part 302. The side of the plug-in part 302 extends outward and forms an outwardly protruding stepped shoulder with the plug-in part 302 and the elastic part 303. This allows the floating seat 200 to move up and down within a limited range and can effectively absorb the deviation generated during the insertion and removal process, thereby improving the stability and reliability of the floating plate to board connector.

[0052] In practical implementation, the floating terminal 300 can be made of copper alloy, which has good conductivity and fatigue resistance, or stainless steel, to improve durability. Meanwhile, the width of the floating terminal 300 can be selected according to the current magnitude to ensure safe and reliable power transmission.

[0053] The groove structure on the floating base 200 includes a snap-fit ​​groove 203 and a plug-in groove 204. The floating terminal 300 is paired and inserted with the snap-fit ​​groove 203 and the plug-in groove 204 on the floating base 200 through the contact part 301 and the plug-in part 302. The snap-fit ​​groove 203 includes a first snap-fit ​​groove 2031, a positioning groove 2032 and a second snap-fit ​​groove 2033 that are interconnected. The first snap-fit ​​groove 2031 is formed on the inner wall of the mating groove 202. The inner wall of the mating groove 202 is formed with an insertion groove 205 that communicates with the second snap-fit ​​groove 2033, so that the first contact part 3011 is paired and inserted into the first snap-fit ​​groove 2031 and is embedded and paired with the insertion groove 205 through the insertion part 307. The positioning groove 2032 and the second snap-fit ​​groove 2033 are formed on the outer surface of the floating base 200. The second snap-fit ​​groove 2033 is arranged opposite to the first snap-fit ​​groove 2031.

[0054] In practice, the fixed seat 100 and the floating seat 200 can be made of metal or plastic materials, which have high mechanical strength and corrosion resistance.

[0055] In this embodiment, the three-level snap-fit ​​layout of the first slot 2031, the positioning slot 2032 and the second slot 2033, combined with the embedded cooperation of the insertion part 307 and the insertion slot 205, not only improves the vibration resistance of the floating terminal 300 in the floating seat 200, but also avoids the separation and displacement that is easy to occur in the traditional single slot design through multi-directional limiting, thus ensuring the contact stability of the connector under complex working conditions.

[0056] Specifically, in this embodiment, the reliability and stability of the board-to-board connector are improved by optimizing the structure and floating mechanism of the floating terminal 300. Simultaneously, the dual-contact design allows the floating portion to effectively absorb external stress, reducing the risk of poor contact. Furthermore, the multi-step shoulder snap-fit ​​structure and elastic design enhance overall performance.

[0057] The top of the floating seat 200 has a mating protrusion 201, and a mating groove 202 is provided in the middle of the mating protrusion 201. A second slot 2033 is provided on the outer side of the mating protrusion 201, and one end of the second slot 2033 extends to the bottom and communicates with the insertion slot 204. The insertion slot 204 is provided on the outer side of the floating seat 200, and the width of the insertion slot 204 is greater than that of the second slot 2033.

[0058] The connector in this solution is a board-to-board connector male end. Through the setting of the mating protrusion 201 on the floating seat 200 and the mating groove 202 set on the mating protrusion 201, the mating installation with the female end is more stable and reliable, which improves the assembly accuracy and reliability of the connector, reduces incorrect connection caused by misoperation, and thus improves product quality and user experience.

[0059] The floating seat 200 has symmetrically arranged limiting feet 206 on both sides. One end of the limiting foot 206 extends outward to form a limiting protrusion 207. The fixed seat 100 has a retaining groove 103 for matching and retaining the limiting protrusion 207. The floating seat 200 is inserted into the receiving cavity 101 through the limiting foot 206, so that the limiting protrusion 207 on the limiting foot 206 is matched with the retaining groove 103. The inner side of the floating seat 200 is provided with a reinforcing rib 208 that is connected to the limiting foot 206.

[0060] The symmetrically arranged limiting feet 206 and limiting protrusions 207 on both sides of the floating seat 200 enable the floating seat 200 to be positioned and installed with the fixed seat 100, preventing the floating seat 200 from shifting laterally due to external impact or vibration. This solution ensures that the floating seat 200 moves stably within the receiving cavity 101 through the cooperation of the limiting protrusions 207 and the retaining grooves 103, preventing misalignment caused by external vibration or impact and improving the overall reliability of the connector.

[0061] Specifically, in this embodiment, the connection design between the limiting foot 206 and the inner reinforcing rib 208 of the floating seat 200 significantly improves the overall structural strength of the floating seat 200, prevents the floating seat 200 from deforming due to long-term stress, and ensures stable contact between the floating terminal 300 and the docking component. At the same time, the reinforcing rib 208 can optimize the deformation resistance of the limiting foot 206 and make the relevant dimensions more accurate.

[0062] The width of the plug portion 302 is greater than that of the contact portion 301 and the elastic portion 303. The plug portion 302 is paired and inserted into the plug groove 204 to form a holding limit. The side of the plug portion 302 is provided with a first plug protrusion 3021, a second plug protrusion 3022 and a third plug protrusion 3023 with progressively decreasing protrusion amplitude. The first plug protrusion 3021, the second plug protrusion 3022 and the third plug protrusion 3023 are arranged in a stepped shape.

[0063] The first, second, and third insertion protrusions 3023 on the side of the insertion part 302 form a stepped structure. The progressively decreasing protrusions create a progressive holding effect when the floating terminal 300 is inserted into the insertion slot 204, improving the ease of assembly of the floating terminal 300 through the insertion part and the insertion slot 204. The multi-level holding also enhances the pull-out resistance of the insertion part 302, solving the problem of poor insertion stability in traditional structures. At the same time, the increased width of the insertion part allows it to be embedded in the insertion slot, increasing the deformable area of ​​the floating part.

[0064] In addition, the multiple protrusions improve the quality of signal transmission, allowing each protrusion to provide additional contact points, increasing the total contact area and reducing contact resistance.

[0065] Specifically, in this embodiment, the design of the plug-in protrusion structure significantly improves the stability and reliability of the board-to-board connector. Each protrusion structure has a clear functional division, and together they form an efficient and stable connection system. This makes it suitable for conventional applications and also able to cope with more demanding environmental conditions, such as high-frequency vibration or large temperature variations.

[0066] The relative arrangement of the first contact portion 3011 and the second contact portion 3013 results in the formation of a first contact plane and a second contact plane on the outer surfaces of the first contact portion 3011 and the second contact portion 3013, respectively. The pressing block 306 is disposed on the bending contact portion 3012, and the width of the pressing block 306 is greater than that of the bending contact portion 3012.

[0067] The first contact portion 3011 and the second contact portion 3013 are arranged opposite to each other to form a double contact plane, which realizes a double contact point design for the first contact portion 3011 and the second contact portion 3013. This increases the contact area between the floating terminal 300 and the mating component. At the same time, the widening of the pressure block 306 makes it easier to insert the floating terminal 300 into the groove structure on the floating seat 200. The double contact point setting and the widened pressure block 306 setting can maintain stable contact pressure even in high-frequency vibration environment, avoiding the signal interruption problem caused by contact surface wear or displacement in the traditional single contact point structure, and improving the contact reliability and effect of the connector.

[0068] Specifically, in this embodiment, the width of the pressure block 306 is greater than that of the bent contact portion 3012, making the pressing and installation of the floating terminal 300 and the floating seat 200 simpler, while further improving the reliability and safety of the board-to-board connector contact portion. Especially in high-frequency vibration and harsh environments, this design can effectively prevent signal terminals from loosening or falling off, ensuring the continuity and stability of signal transmission.

[0069] The positioning groove 2032 is provided on the top surface of the mating protrusion 201. The bent contact portion 3012 is pressed into the positioning groove 2032. The inner wall of the positioning groove 2032 is provided with a positioning protrusion 209 for holding the side of the pressing block 306. A pressing groove 210 for mating the pressing block 306 is formed in the middle of the positioning groove 2032.

[0070] The inner wall of the positioning groove 2032 is provided with a positioning protrusion 209 and a pressing groove 210. Through the locking cooperation between the positioning protrusion 209 and the side of the pressing block 306, the floating terminal 300 is accurately positioned within the floating seat 200. After the pressing block 306 is pressed into the positioning groove 2032, the limiting effect of the positioning protrusion 209 on the side of the pressing block 306 can effectively prevent the floating terminal 300 from twisting or shifting due to external force, solving the problem of low positioning accuracy in traditional structures. Furthermore, the widened pressing block 306 facilitates the installation of the floating terminal 300 and the floating seat 200, ensuring that the floating terminal 300 always maintains accurate alignment with the docking component during the floating process.

[0071] The connection between the first contact portion 3011 and the bent contact portion 3012 and the second contact portion 3013 is arranged in a "U" shape, and the width of the insertion portion 307 is smaller than that of the first contact portion 3011.

[0072] The first contact portion 3011 is connected to the bent contact portion 3012 and the second contact portion 3013 to form a "U" shape, which enhances the installation stability of the contact portion and the floating seat 200 and the U-shaped setting increases the contact area. The design of the insertion portion 307, which is narrower than the first contact portion 3011, plays a guiding role when the floating terminal 300 is inserted into the snap-fit ​​groove 203, making the insertion of its narrowed insertion end smoother, reducing the assembly difficulty, and preventing the floating terminal 300 contact portion from lifting due to the embedding of the insertion portion 307 and the insertion groove 205.

[0073] In this embodiment, the groove structure of the floating seat 200 adopts a hierarchical snap-fit ​​design. The first snap-fit ​​groove 2031 is connected to the insertion groove 205 on the inner wall of the docking groove 202, so as to realize the precise guidance and embedding of the floating terminal 300 insertion part 307. The positioning groove 2032 and the second snap-fit ​​groove 2033 are set on the outer surface of the floating seat 200. The widening treatment of the pressure block 306 improves the ease of assembly of the floating terminal 300 and the floating seat 200.

[0074] The elastic part 303 includes a first elastic floating part 3031, a second elastic floating part 3032, a third elastic floating part 3033 and a fourth elastic floating part 3034 arranged in sequence. The end of the first elastic floating part 3031 away from the second elastic floating part 3032 is connected to the insertion part 302, and the end of the fourth elastic floating part 3034 away from the third elastic floating part 3033 is connected to the limiting part 304. The elastic part 303 is located in the receiving cavity 101 through the mating connection between the floating seat 200 and the fixed seat 100.

[0075] The elastic part 303 adopts a four-segment floating structure, which achieves a wide range of floating compensation through segmented elastic deformation. This increases the length that can float and deform within a limited space, solving the problems of small floating range and unstable positioning of traditional structures, and ensuring that the connector can maintain stable electrical connection performance in complex displacement scenarios.

[0076] The elastic part 303 allows for a certain floating range between the male and female connectors in this design, further enhancing the connector's adaptability and reliability when subjected to external impacts or vibrations.

[0077] One end of the terminal welding part 305 is connected to the elastic part 303, and the other end of the terminal welding part 305 extends outward from the bottom of the fixing base 100, which facilitates subsequent welding operations, simplifies the assembly process, and improves production efficiency.

[0078] The inner side of the receiving cavity 101 is provided with a limiting groove 102 for pairing and holding limiting part 304. The limiting part 304 includes a first limiting protrusion 3041, a second limiting protrusion 3042 and a third limiting protrusion 3043 with the protrusion width increasing sequentially. The first limiting protrusion 3041, the second limiting protrusion 3042 and the third limiting protrusion 3043 extend sequentially toward the terminal welding part 305.

[0079] The limiting part 304 is provided with first to third limiting protrusions 3043, forming a multi-level limiting structure through the progressively increasing width of the protrusions. When the floating seat 200 floats within the fixed seat 100, the limiting protrusions and the limiting grooves 102 on the inner wall of the receiving cavity 101 are engaged step by step, which not only ensures the freedom of movement of the floating seat 200, but also prevents the floating seat 200 from excessively deviating through multi-level limiting, solving the problem of uncontrollable floating range in traditional structures and improving the safety of connector use.

[0080] The outer side of the fixing base 100 is connected to a fixing plate 400 for welding installation, and the outer side of the fixing base 100 is provided with a fixing slot 104 for mating and installing the fixing plate 400.

[0081] The fixing plate 400 and the fixing slot 104 are provided on the outside of the fixing base 100. The fixing plate 400 is precisely positioned by the fixing slot 104, so that the fixing plate 400 can be stably soldered and installed on the board.

[0082] In this embodiment, the insertion of the limiting part 304 of the floating terminal 300 into the limiting groove 102 of the floating seat 200 can prevent the terminal from coming out or deforming excessively due to excessive displacement. The terminal welding part 305 is extended by bending and used for welding to the circuit board, so that the floating seat 200 can move up and down within a limited range and effectively absorb the deviation generated during the insertion and removal process, improve the stability and reliability of the connector, and at the same time ensure the structural durability of the connector in long-term use.

[0083] Specifically, the floating board-to-board connector of this solution is male, and is connected to a board-to-board connector female socket 500 via a mating protrusion 201. Several power terminals 501 are inserted into the female socket for mating with the floating terminal 300. The power terminals include a retaining part 502 and two oppositely arranged spring arms 503. A mating gap is provided between the two spring arms 503 for mating with the mating protrusion 201. One end of the spring arm 503 near the retaining part 502 is folded inward to form an inward folded part 504. The inward folded part 504 formed by bending increases the elastic length, thereby enhancing the plastic deformation and elasticity. The inner sides of the two spring arms 503 are provided with contact points 505 for mating the first contact part 3011 and the second contact part 3013. Specifically, the male board-to-board connector is inserted into the mating gap via the mating protrusion 201, so that the first contact part 3011 and the second contact part 3013 respectively make contact with the contact points on the inner sides of the two spring arms 503.

[0084] The specific implementation principle in this embodiment is as follows: by optimizing the various components of the floating terminal 300, the electrical and mechanical performance of the board-to-board connector is significantly improved. In particular, the design of the double contact points, stepped shoulder, and multi-section floating part on the contact portion of the floating terminal 300 greatly enhances the stability and reliability of the connector, enabling it to adapt to more complex usage environments.

[0085] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A dual contact point floating board-to-board connector comprising a fixed seat and a floating seat arranged in the fixed seat, an accommodating cavity for inserting the floating seat is formed in the inside of the fixed seat, and the floating seat is inserted into the accommodating cavity, characterized in that: The floating seat has a docking groove in the middle for docking, and several floating terminals are connected to the floating seat by insertion. The floating seat also has a groove structure for mating and inserting the floating terminals. The floating terminal is provided with a contact part, a plug-in part, an elastic part, a limiting part and a terminal welding part in sequence by bending. The contact part includes a first contact part, a bent contact part and a second contact part formed in sequence by bending. The first contact part and the second contact part are arranged opposite to each other to form a double contact plane. The bent contact part is located between the first contact part and the second contact part. The middle part of the bent contact part is provided with a pressure block with protruding sides. The end of the first contact part is formed with an insertion part. The end of the second contact part away from the first contact part extends by bending and is connected to the plug-in part. The side of the plug-in part extends outward and forms an outwardly protruding stepped shoulder with the plug-in part and the elastic part. The groove structure on the floating base includes a snap-fit ​​groove and a plug-in groove. The floating terminal is paired and inserted with the snap-fit ​​groove and plug-in groove on the floating base through the contact part and the plug-in part. The snap-fit ​​groove includes a first snap-fit ​​groove, a positioning groove and a second snap-fit ​​groove that are interconnected. The first snap-fit ​​groove is formed on the inner wall of the mating groove. The inner wall of the mating groove is formed with an insertion groove that communicates with the second snap-fit ​​groove, so that the first contact part is paired and inserted into the first snap-fit ​​groove and is embedded and paired with the insertion groove through the insertion part. The positioning groove and the second snap-fit ​​groove are formed on the outer surface of the floating base. The second snap-fit ​​groove is arranged opposite to the first snap-fit ​​groove.

2. The dual contact floating board-to-board connector of claim 1, wherein: The top of the floating seat has a mating protrusion, and the mating groove is a recess in the middle of the mating protrusion. The second slot is located on the outer side of the mating protrusion, and one end of the second slot extends to the bottom and communicates with the insertion slot. The insertion slot is located on the outer side of the floating seat, and the width of the insertion slot is greater than that of the second slot.

3. The dual contact floating board-to-board connector of claim 2, wherein: The floating seat has symmetrically arranged limiting feet on both sides. One end of the limiting foot extends outward to form a limiting protrusion. The fixed seat has a retaining groove for matching and holding the limiting protrusion. The floating seat is inserted into the receiving cavity through the limiting foot, so that the limiting protrusion on the limiting foot is matched with the retaining groove. The inner side of the floating seat is provided with a reinforcing rib that connects with the limiting foot.

4. The dual contact floating board-to-board connector of claim 1, wherein: The width of the plug portion is greater than that of the contact portion and the elastic portion. The plug portions are paired and inserted into the plug slot to form a locking limit. The side of the plug portion is provided with a first plug protrusion, a second plug protrusion and a third plug protrusion with progressively decreasing protrusions. The first plug protrusion, the second plug protrusion and the third plug protrusion are arranged in a stepped shape.

5. The dual contact floating board-to-board connector of claim 2, wherein: The relative arrangement of the first contact portion and the second contact portion results in the formation of a first contact plane and a second contact plane on the outer surfaces of the first contact portion and the second contact portion, respectively. The pressure block is disposed on the bending contact portion, and the width of the pressure block is greater than that of the bending contact portion.

6. The dual contact floating board-to-board connector of claim 5, wherein: The positioning groove is provided on the top surface of the mating protrusion. The bent contact part is pressed into the positioning groove. The inner wall of the positioning groove is provided with a positioning protrusion for holding the side of the pressing block, and a pressing groove for mating pressing blocks is formed in the middle of the positioning groove.

7. The dual contact floating board-to-board connector of claim 5, wherein: The connection between the first contact portion and the bent contact portion and the second contact portion extends in a "U" shape, and the width of the insertion portion is smaller than that of the first contact portion.

8. A dual-contact floating board-to-board connector according to any one of claims 1-7, characterized in that: The elastic part includes a first elastic floating part, a second elastic floating part, a third elastic floating part and a fourth elastic floating part arranged in sequence. The end of the first elastic floating part away from the second elastic floating part is connected to the insertion part, and the end of the fourth elastic floating part away from the third elastic floating part is connected to the limiting part. The elastic part is located in the receiving cavity through the mating connection between the floating seat and the fixed seat.

9. The dual contact floating board-to-board connector of claim 1, wherein: The inner side of the receiving cavity is provided with a limiting groove for the mating holding limiting part. The limiting part includes a first limiting protrusion, a second limiting protrusion and a third limiting protrusion with progressively increasing protrusion width. The first limiting protrusion, the second limiting protrusion and the third limiting protrusion extend toward the terminal welding part in sequence.

10. The dual contact floating board-to-board connector of any one of claims 1-7, wherein: The outer side of the fixing base is connected to a fixing plate for welding installation, and the outer side of the fixing base is provided with a fixing slot for mating and installing the fixing plate.

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