Double-contact floating board-to-board connector

Abstract

The invention relates to a double-contact floating board-to-board connector in the field of connectors, which comprises a fixed seat and a floating seat arranged in the fixed seat, an accommodating cavity for inserting the floating seat is formed in the fixed seat, the floating seat is inserted in the accommodating cavity, a butt joint groove for butt joint is formed in the middle of the floating seat, and the butt joint groove is formed in the middle of the floating seat. The floating seat is connected with a floating terminal in an inserting manner, the floating seat is provided with a groove structure for inserting the floating terminal in a paired manner, and the floating terminal is sequentially provided with a contact part, an inserting part, an elastic part, a limiting part and a terminal welding part in a bending manner. 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] The present invention relates to the field of connectors, and particularly to a double-contact floating board-to-board connector. Background Art

[0002] As a core component for electrical connection between internal circuit boards of electronic devices, the board-to-board connector has a wide range of applications, including but not limited to fields such as communication devices, consumer electronics, automotive electronics, industrial automation, medical devices, and military manufacturing. With the development of electronic products towards miniaturization and lightweight, the design of the board-to-board connector has been continuously improved to adapt to more complex application environments and higher performance requirements.

[0003] Existing floating board-to-board connectors are mainly used to solve the problems of substrate assembly position deviation and the influence of external vibration. Common solutions include but are not limited to the following: one is to set elastic elements inside the connector to enable it to move freely within a certain range, thereby absorbing assembly errors; the second is to adopt a special pin design to enable the pins to automatically adjust their positions during mating; the third is to optimize the structural design of the connector, such as adding anti-fooling structures to ensure the correct plugging and unplugging directions and reduce the possibility of misoperation; the fourth is to improve 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 deficiencies. First, the contact surface of existing board-to-board connectors is relatively simple. In a long-term high-frequency vibration environment, the contact parts of the floating terminals are prone to displacement or fracture, resulting in poor contact or even complete failure. Second, the existing floating terminals are relatively simple, and the plugging and installation effect between the slots on the existing floating seat and the floating terminals is poor, resulting in poor convenience and stability in the assembly and connection of the floating terminals and the floating seat. In addition, it is difficult for the floating parts of the terminals inside the existing connector to achieve stable positioning and floating in a large deformation area, which makes the use effect of the connector in actual use not good. These problems limit the wide promotion and use of existing floating board-to-board connectors in high-performance application fields. Summary of the Invention

[0005] The purpose of the present invention is to solve the above defects and provide a double-contact floating board-to-board connector to solve the technical problems that the contact plane of the existing board-to-board connector in the above background art is relatively simple, and secondly, it is difficult for the terminals to achieve stable positioning and large-range floating, which results in position deviation during actual use of the connector, leading to poor contact and poor floating use effect.

[0006] The purpose of the present invention is achieved in the following way:

[0007] A double-contact-point floating board-to-board connector includes a fixed base and a floating base disposed within the fixed base. An accommodation cavity for inserting the floating base is formed inside the fixed base, and the floating base is inserted into the accommodation cavity. A docking groove for docking is formed in the middle of the floating base, and a number of floating terminals are connected to the floating base by insertion. A groove structure for mating and inserting the floating terminals is formed on the floating base;

[0008] The floating terminals are sequentially provided with a signal contact portion, a plugging portion, an elastic portion, a limiting portion, and a terminal welding portion through bending. The contact portion includes a first contact portion, a bent contact portion, and a second contact portion formed sequentially by bending. The first contact portion and the second contact portion are oppositely arranged to form a double-contact plane. The bent contact portion is disposed between the first contact portion and the second contact portion. A pressing block with protrusions on both sides is provided in the middle of the bent contact portion. An insertion portion is formed at the end of the first contact portion. The end of the second contact portion away from the first contact portion extends through bending and is connected to the plugging portion. The side surface of the plugging portion extends outward and forms an outwardly protruding stepped shoulder with the plugging portion and the elastic portion;

[0009] The groove structure on the floating base includes a clamping groove and a plugging groove. The floating terminals are paired and inserted into the clamping groove and the plugging groove on the floating base through the contact portion and the plugging portion. The clamping groove includes a first card slot, a positioning slot, and a second card slot that communicate with each other. The first card slot is formed on the inner wall of the docking groove. An insertion slot communicating with the second card slot is formed on the inner wall of the docking groove, so that the first contact portion is paired and inserted into the first card slot, and is embedded and paired with the insertion slot through the insertion portion. The positioning slot and the second card slot are formed on the outer surface of the floating base, and the second card slot is oppositely arranged with the first card slot.

[0010] Further in the above description, a docking protrusion is formed at the top of the floating base. The docking groove is arranged as a groove in the middle of the docking protrusion. The second card slot is arranged on the outer side surface of the docking protrusion, and one end of the second card slot extends downward and communicates with the plugging groove. The plugging groove is arranged on the outer side surface of the floating base, and the width of the plugging groove is greater than that of the second card slot.

[0011] The connector in this solution is the male end of a board-to-board connector. Through the docking protrusion on the floating base and the docking groove arranged on the docking protrusion, its docking and installation with the female end are more stable and reliable, improving the assembly accuracy and reliability of the connector, reducing incorrect connections caused by misoperation, and thus enhancing the product quality and user experience.

[0012] Further in the above description, symmetrically arranged limiting feet are formed on both sides of the floating base. One end of the limiting feet extends outward to form a limiting convex block. A clamping groove for mating and holding the limiting convex block is formed on the fixed base. The floating base is inserted into the accommodation cavity through the limiting feet, so that the limiting convex block on the limiting feet is clamped and paired with the clamping groove. A reinforcing rib for connecting with the limiting feet is arranged on the inner side of the floating base.

[0013] The limiting feet and limiting bumps symmetrically arranged on both sides of the floating seat realize the positioning and installation of the floating seat and the fixed seat, preventing the floating seat from generating lateral offset due to external force impact or vibration; this solution ensures the stable movement of the floating seat in the accommodation cavity through the cooperation of the limiting bump and the clamping groove, preventing misalignment caused by external vibration or impact, and improving the overall reliability of the connector.

[0014] The connection design between the limiting feet and the inner reinforcing ribs of the floating seat greatly improves the overall structural strength of the floating seat, avoiding deformation of the floating seat due to long-term stress, ensuring stable contact between the floating terminals and the docking components. At the same time, the reinforcing ribs can optimize the anti-deformation performance of the limiting feet, making the relevant dimensions more accurate.

[0015] Further in the above description, the width of the insertion part is greater than that of the contact part and the elastic part. The insertion part is paired and inserted into the insertion slot to form clamping and limiting, and the side surface of the insertion part is provided with a first insertion protrusion, a second insertion protrusion, and a third insertion protrusion with gradually decreasing protrusion amplitudes. The sequential arrangement of the first insertion protrusion, the second insertion protrusion, and the third insertion protrusion forms a stepped shape.

[0016] The first, second, and third insertion protrusions provided on the side surface of the insertion part form a stepped structure. Through the layout with gradually decreasing protrusion amplitudes, a progressive clamping effect is formed when the floating terminal is inserted into the insertion slot, improving the assembly convenience of the floating terminal and the insertion slot through the insertion part. At the same time, the anti-pull-out ability of the insertion part is enhanced through multi-stage clamping, solving the problem of poor insertion stability of the traditional structure. At the same time, the increase in the width of the insertion part enables it to be buried in the insertion slot, increasing the deformable area of the floating part.

[0017] Further in the above description, the relative arrangement of the first contact part and the second contact part enables the outer side surfaces of the first contact part and the second contact part to respectively form a first contact plane and a second contact plane. The pressing block is arranged on the bent contact part, and the width of the pressing block is greater than that of the bent contact part.

[0018] By the relative arrangement of the first contact part and the second contact part to form a double contact plane, a dual contact point design is realized between the first contact part and the second contact part, increasing the contact area between the floating terminal and the docking component. At the same time, through the widening treatment of the pressing block, it is convenient to insert and connect the floating terminal to the groove structure on the floating seat, enabling the dual contact point setting and the widened pressing block setting to maintain a stable contact pressure in a high-frequency vibration environment, avoiding the signal interruption problem easily caused by wear or offset of the contact surface of the traditional single contact point structure, and improving the contact reliability and effect of the connector.

[0019] Further in the above description, the positioning groove is arranged on the top surface of the docking 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 clamping the side of the pressure block, and a pressure groove for the mating pressure block is formed in the middle of the positioning groove.

[0020] The inner wall of the positioning groove is provided with a positioning protrusion and a pressing groove, and the positioning protrusion cooperates with the side of the pressing block to realize the accurate positioning of the floating terminal in the floating seat. After the pressing block is pressed into the positioning groove, the limiting effect of the positioning protrusion on the side of the pressing block can effectively prevent the floating terminal from twisting or deflecting due to external force, solving the problem of low positioning accuracy of the traditional structure, and the widened pressing block facilitates the installation of the floating terminal and the floating seat, ensuring that the floating terminal always maintains accurate alignment with the docking component during the floating process.

[0021] Further in the above description, the connection between the first contact portion and the bent contact portion and the second contact portion is extended in a "U" shape, and the width of the insertion portion is smaller than the first contact portion.

[0022] The first contact portion is connected to the bent contact portion and the second contact portion to form a "U" shape, which enhances the installation stability of the contact portion and the floating seat and increases the contact area due to the U-shaped setting; the design of the insertion portion being smaller than the first contact portion plays a guiding role when the floating terminal is inserted into the snap-in slot, making the insertion of the narrowed insertion end smoother and reducing the difficulty of assembly, and, through the buried insertion of the insertion portion and the insertion slot, the warping of the floating terminal contact portion is avoided.

[0023] Further in the above description, 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 which are arranged in sequence, the end of the first elastic floating part away from the second elastic floating part is connected to the plug-in part, the front end of the fourth elastic floating part away from the third elastic floating part is connected to the limiting part, and the elastic part is located in the accommodating cavity through the matching connection of the floating seat and the fixed seat.

[0024] The elastic part adopts a four-stage floating structure, which realizes a large range of floating compensation through segmented elastic deformation, so that it can increase the floating deformation length within a limited space, solve the problems of small floating range and unstable positioning of traditional structures, and ensure that the connector can still maintain stable electrical connection performance in complex displacement scenarios.

[0025] The provision of the elastic part allows a certain floating range between the connector (male end) and the female end of the present solution, further enhancing the adaptability and reliability of the connector when subjected to external shock or vibration.

[0026] One end of the terminal welding portion is connected to the elastic portion, and the other end of the terminal welding portion is exposed and extends outward from the bottom of the fixing seat, which is convenient for subsequent welding operations, simplifies the assembly process, and improves production efficiency.

[0027] Further in the above description, a limiting groove for mating and clamping the limiting portion is provided on the inner side surface of the accommodating cavity. The limiting portion includes a first limiting protrusion, a second limiting protrusion, and a third limiting protrusion with sequentially increasing protrusion widths. The first limiting protrusion, the second limiting protrusion, and the third limiting protrusion are sequentially arranged to extend towards the terminal welding portion.

[0028] The limiting portion is provided with the first to third limiting protrusions. Through the layout with sequentially increasing protrusion widths, a multi-stage limiting structure is formed. When the floating seat floats within the fixed seat, the limiting protrusions are sequentially clamped with the limiting grooves on the inner wall of the accommodating cavity, which not only ensures the freedom of movement of the floating seat but also prevents the floating seat from excessive offset through multi-stage limiting, solving the problem of uncontrollable floating range in the traditional structure and enhancing the use safety of the connector.

[0029] Further in the above description, a fixing piece for welding and installation is connected to the outer side surface of the fixed seat, and a fixing slot for mating and installing the fixing piece is provided on the outer side surface of the fixed seat.

[0030] The fixing piece and the fixing slot are provided on the outer side of the fixed seat. Through the precise positioning of the fixing piece by the fixing slot, the fixing piece can achieve stable welding and installation of the connector on the board.

[0031] Advantages of the present invention:

[0032] 1. By inserting the contact portion into the engaging groove in a paired manner, and by easily pressing the pressing block on the bent contact portion into the positioning groove. At the same time, through the paired guiding insertion of the insertion portion and the insertion groove on the floating seat, the convenience of assembling the floating terminal is further enhanced, the production efficiency is improved, and the anti-interference ability of the floating terminal when subjected to external impact or vibration is improved. Through the formation of opposite double contact planes by the first contact portion and the second contact portion, good contact between the floating terminal and the external docking member is ensured, achieving high-precision positioning and enhancing the overall stability and reliability;

[0033] 2. The insertion structure of the stepped shoulder formed by the outward extension of the side surface of the insertion portion and the insertion slot facilitates the paired insertion of the floating terminal through the insertion portion and the insertion slot. At the same time, the outward protrusion of the stepped shoulder forms a limiting effect with the insertion slot and can increase the deformable area of the floating terminal, improving the use effect of the floating function and further enhancing the working performance of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0035] Figure 2 is Figure 1 a partial enlarged schematic diagram of A in

[0036] Figure 3Schematic diagram of the overall structure in the second direction of this embodiment;

[0037] Figure 4 Exploded view of this embodiment;

[0038] Figure 5 Sectional perspective view of this embodiment;

[0039] Figure 6 Sectional plan view of this embodiment;

[0040] Figure 7 Schematic diagram of the structure of the floating seat in this embodiment;

[0041] Figure 8 Schematic diagram of the structure of the floating terminal in this embodiment;

[0042] Figure 9 Schematic perspective view of the usage state of this embodiment;

[0043] Figure 10 Sectional schematic view of the usage state of this embodiment;

[0044] The reference numerals in the figure are respectively:

[0045] 100 - fixed seat, 101 - accommodation cavity, 102 - limiting groove, 103 - clamping groove, 104 - fixing slot;

[0046] 200 - floating seat, 201 - docking projection, 202 - docking groove, 203 - clamping groove, 2031 - first card slot, 2032 - positioning, 2033 - second card slot, 204 - insertion slot, 205 - insertion groove, 206 - limiting foot, 207 - limiting projection, 208 - reinforcing rib, 209 - positioning projection, 210 - pressing groove;

[0047] 300 - floating terminal, 301 - contact part, 3011 - first contact part, 3012 - bent contact part, 3013 - second contact part, 302 - insertion part, 3021 - first insertion projection, 3022 - second insertion projection, 3023 - third insertion projection, 303 - elastic part, 3031 - first elastic floating part, 3032 - second elastic floating part, 3033 - third elastic floating part, 3034 - fourth elastic floating part, 304 - limiting part, 3041 - first limiting projection, 3042 - second limiting projection, 3043 - third limiting projection, 305 - terminal welding part, 306 - pressing block, 307 - insertion part; 400 - fixing piece;

[0048] 500 - female connector, 501 - power terminal, 502 - holding part, 503 - elastic arm part, 504 - inner folding part, 505 - contact point. Detailed implementation manner

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

[0050] In this embodiment, referring to Figures 1-10 , a double-contact-point floating board-to-board connector implemented specifically includes a fixed base 100 and a floating base 200 disposed within the fixed base 100. An accommodation cavity 101 for inserting the floating base 200 is formed inside the fixed base 100. The floating base 200 is inserted into the accommodation cavity 101. A docking groove 202 for docking is formed in the middle of the floating base 200. A plurality of floating terminals 300 are connected to the floating base 200 by insertion, and a groove structure for mating and inserting the floating terminals 300 is formed on the floating base 200.

[0051] The floating terminal 300 is sequentially provided with a signal contact portion 301, a plugging portion 302, an elastic portion 303, a limiting portion 304, and a terminal welding portion 305 through bending. The contact portion 301 includes a first contact portion 3011, a bent contact portion 3012, and a second contact portion 3013 formed in sequence by bending. The first contact portion 3011 and the second contact portion 3013 are oppositely arranged 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. A pressing block 306 with two-sided protrusions is provided in the middle of the bent contact portion 3012. An insertion portion 307 is formed at the end of the first contact portion 3011. The end of the second contact portion 3013 away from the first contact portion 3011 extends through bending and is connected to the plugging portion 302. The side surface of the plugging portion 302 extends outward and forms an outwardly protruding stepped shoulder with the plugging portion 302 and the elastic portion 303; enabling the floating base 200 to move up and down within a limited range and effectively absorbing the deviation generated during the plugging and unplugging process, improving the stability and reliability of the floating board-to-board connector.

[0052] In the specific implementation process, the floating terminal 300 can select a copper alloy material, which has good electrical conductivity and anti-fatigue performance, or can also select a stainless steel material to improve durability. At the same time, the width of the floating terminal 300 can select an appropriate cross-sectional size according to the magnitude of the current to ensure safe and reliable power transmission.

[0053] The groove structure on the floating seat 200 includes a clamping groove 203 and a plugging groove 204. The floating terminal 300 is paired and inserted with the clamping groove 203 and the plugging groove 204 on the floating seat 200 through the contact part 301 and the plugging part 302. The clamping groove 203 includes a first clamping groove 2031, a positioning groove 2032 and a second clamping groove 2033 that communicate with each other. The first clamping groove 2031 is formed on the inner wall of the docking groove 202. An insertion groove 205 communicating with the second clamping groove 2033 is formed on the inner wall of the docking groove 202, so that the first contact part 3011 is paired and inserted into the first clamping groove 2031, and is embedded and paired with the insertion groove 205 through the insertion part 307. The positioning groove 2032 and the second clamping groove 2033 are formed on the outer surface of the floating seat 200, and the second clamping groove 2033 is arranged opposite to the first clamping groove 2031.

[0054] In the specific implementation process, 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-stage clamping layout of the first clamping groove 2031, the positioning groove 2032 and the second clamping groove 2033, combined with the embedded fit of the insertion part 307 and the insertion groove 205, not only improves the anti-vibration performance of the floating terminal 300 in the floating seat 200, but also avoids the detachment and offset easily generated by the traditional single slot design through multi-directional limiting, ensuring the contact stability of the connector under complex working conditions.

[0056] Specifically, the implementation in this embodiment: By optimizing the structure of the floating terminal 300 and the floating mechanism, the reliability and stability of the board-to-board connector are improved. At the same time, through the contact design of the double contact points, the floating part can effectively absorb external stress and reduce the risk of poor contact. In addition, through the clamping structure and elastic design of the multi-step shoulders, the overall performance is improved.

[0057] A docking protrusion 201 is formed on the top of the floating seat 200. The docking groove 202 is arranged as a groove in the middle of the docking protrusion 201. The second clamping groove 2033 is arranged on the outer side surface of the docking protrusion 201, and one end of the second clamping groove 2033 extends towards the bottom and communicates with the plugging groove 204. The plugging groove 204 is arranged on the outer side surface of the floating seat 200, and the width of the plugging groove 204 is greater than that of the second clamping groove 2033.

[0058] The connector of this solution is the male end of the board-to-board connector. Through the docking protrusion 201 on the floating seat 200 and the docking groove 202 arranged on the docking protrusion 201, its docking and installation with the female end are more stable and reliable, improving the assembly accuracy and reliability of the connector, reducing the wrong connection caused by misoperation, and thus improving the product quality and user experience.

[0059] On both sides of the floating seat 200, symmetrically arranged limiting feet 206 are formed. One end of the limiting foot 206 extends outward to form a limiting bump 207. On the fixed seat 100, a clamping groove 103 for mating and clamping the limiting bump 207 is formed. The floating seat 200 is inserted into the receiving cavity 101 through the limiting feet 206, so that the limiting bumps 207 on the limiting feet 206 are clamped and paired with the clamping groove 103. Inside the floating seat 200, a reinforcing rib 208 connected to the limiting feet 206 is provided.

[0060] The symmetrically arranged limiting feet 206 and limiting bumps 207 on both sides of the floating seat 200 realize the positioning and installation of the floating seat 200 and the fixed seat 100, preventing the floating seat 200 from generating lateral displacement due to external force impact or vibration. In this solution, the cooperation between the limiting bump 207 and the clamping groove 103 ensures the stable movement of the floating seat 200 in the receiving cavity 101, 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 feet 206 and the reinforcing rib 208 inside the floating seat 200 greatly improves the overall structural strength of the floating seat 200, avoiding deformation of the floating seat 200 due to long-term stress, ensuring the stable contact between the floating terminal 300 and the docking component. At the same time, the reinforcing rib 208 can optimize the anti-deformation performance of the limiting feet 206, making the relevant dimensions more accurate.

[0062] The width of the insertion part 302 is greater than that of the contact part 301 and the elastic part 303. The insertion part 302 is paired and inserted into the insertion slot 204 to form clamping and limiting. On the side of the insertion part 302, a first insertion protrusion 3021, a second insertion protrusion 3022, and a third insertion protrusion 3023 with gradually decreasing protrusion amplitudes are provided. The sequential arrangement of the first insertion protrusion 3021, the second insertion protrusion 3022, and the third insertion protrusion 3023 forms a stepped shape.

[0063] The first, second, and third insertion protrusions 3023 provided on the side of the insertion part 302 form a stepped structure. Through the layout with gradually decreasing protrusion amplitudes, a progressive clamping effect is formed when the floating terminal 300 is inserted into the insertion slot 204, improving the assembly convenience of the floating terminal 300 through the insertion part and the insertion slot 204. Also, the anti-pulling-out ability of the insertion part 302 is enhanced through multi-stage clamping, solving the problem of poor insertion stability of the traditional structure. At the same time, the increase in the width of the insertion part enables it to be buried in the insertion slot, increasing the deformable area of the floating part.

[0064] In addition, the setting of multiple insertion protrusions improves the quality of signal transmission. Each protrusion structure can provide an additional contact point, increasing the total contact area and reducing the contact resistance.

[0065] Specifically, in this embodiment: Through the design of the plugging convex structure, the stability and reliability of the board-to-board connector are greatly improved. Each level of the convex structure has a clear functional division, and jointly forms an efficient and stable connection system. It can be applied to conventional applications and can also cope with more severe environmental conditions, such as occasions with high-frequency vibration or large temperature changes.

[0066] The relative arrangement of the first contact portion 3011 and the second contact portion 3013 causes the outer sides of the first contact portion 3011 and the second contact portion 3013 to respectively form a first contact plane and a second contact plane. The pressing block 306 is arranged on the bent contact portion 3012, and the width of the pressing block 306 is greater than that of the bent contact portion 3012.

[0067] By arranging the first contact portion 3011 and the second contact portion 3013 relatively to form a double contact plane, a double contact point design is realized between the first contact portion 3011 and the second contact portion 3013, increasing the contact area between the floating terminal 300 and the docking component. At the same time, through the widening treatment of the pressing block 306, it is convenient to insert and connect the floating terminal 300 to the groove structure on the floating seat 200. The double contact point setting and the widening of the pressing block 306 can still maintain a stable contact pressure in a high-frequency vibration environment, avoiding the signal interruption problem easily caused by wear or offset of the contact surface 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 pressing block 306 is greater than that of the bent contact portion 3012, making the press-fitting installation of the floating terminal 300 and the floating seat 200 simpler, and further improving the reliability and use safety of the contact portion of the board-to-board connector. Especially in high-frequency vibration and harsh environments, this design can effectively prevent the signal terminals from loosening or falling off, ensuring the continuity and stability of signal transmission.

[0069] The positioning groove 2032 is arranged on the top surface of the docking convex 201. The bent contact portion 3012 is press-fitted into the positioning groove 2032. The inner wall of the positioning groove 2032 is provided with a positioning protrusion 209 for clamping the side surface of the pressing block 306, and a pressing groove 210 for mating with 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, and the positioning protrusion 209 and the side of the pressing block 306 are engaged to realize accurate positioning of the floating terminal 300 in 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 being twisted or offset due to external force, thereby solving the problem of low positioning accuracy of the traditional structure, and 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 extended 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 increases the contact area due to the U-shaped setting; the design of the insertion portion 307 being smaller than the first contact portion 3011 plays a guiding role when the floating terminal 300 is inserted into the snap-in slot 203, making the insertion of the narrowed insertion end smoother and reducing the difficulty of assembly, and, through the buried insertion of the insertion portion 307 and the insertion slot 205, the warping of the contact portion of the floating terminal 300 is avoided.

[0073] In this embodiment, the groove structure of the floating seat 200 adopts a graded snap-in design, and the first snap-in groove 2031 is connected to the insertion groove 205 on the inner wall of the docking groove 202, so as to realize the precise guiding and embedding of the insertion part 307 of the floating terminal 300; the positioning groove 2032 and the second snap-in groove 2033 are arranged on the outer surface of the floating seat 200, and the assembly convenience of the floating terminal 300 and the floating seat 200 is improved by widening the pressure block 306.

[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 which are arranged in sequence. The end of the first elastic floating part 3031 away from the second elastic floating part 3032 is connected to the plug-in part 302, and the front 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 accommodating cavity 101 through the matching connection between the floating seat 200 and the fixed seat 100.

[0075] The elastic part 303 adopts a four-section floating structure, and realizes large-range floating compensation through segmented elastic deformation, increasing the length of the deformable floating part within a limited space, solving the problems of small floating range and unstable positioning of the traditional structure, and ensuring that the connector can still maintain stable electrical connection performance in complex displacement scenarios.

[0076] The setting of the elastic part 303 enables a certain floating range between the connector (male end) and the female end of this solution, further enhancing the adaptability and reliability of the connector 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 fixed seat 100, facilitating subsequent welding operations, simplifying the assembly process, and improving production efficiency.

[0078] A limiting groove 102 for mating and clamping the limiting part 304 is provided on the inner side surface of the accommodation cavity 101. The limiting part 304 includes a first limiting protrusion 3041, a second limiting protrusion 3042, and a third limiting protrusion 3043 with gradually increasing protrusion widths. The first limiting protrusion 3041, the second limiting protrusion 3042, and the third limiting protrusion 3043 are sequentially arranged extending towards the terminal welding part 305.

[0079] The limiting part 304 is provided with the first to third limiting protrusions 3043, and forms a multi-stage limiting structure through the layout of gradually increasing protrusion widths. When the floating seat 200 floats within the fixed seat 100, the limiting protrusions are sequentially clamped with the limiting groove 102 on the inner wall of the accommodation cavity 101, which not only ensures the freedom of movement of the floating seat 200, but also prevents the floating seat 200 from excessive deviation through multi-stage limiting, solving the problem of uncontrollable floating range of the traditional structure, and improving the use safety of the connector.

[0080] A fixing piece 400 for welding and installation is connected to the outer side surface of the fixed seat 100, and a fixing slot 104 for mating and installing the fixing piece 400 is provided on the outer side surface of the fixed seat 100.

[0081] The fixing piece 400 and the fixing slot 104 are provided on the outer side of the fixed seat 100. Through the precise positioning of the fixing piece 400 by the fixing slot 104, the fixing piece 400 can realize the stable welding and installation of the connector 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 being ejected or deformed excessively due to excessive displacement. The terminal welding part 305 extends by bending and is used for welding with the circuit board, enabling the floating seat 200 to move up and down within a limited range, effectively absorbing the deviation generated during the plugging and unplugging process, improving the stability and reliability of the connector, and ensuring the structural durability of the connector during long-term use.

[0083] Specifically, the floating board-to-board connector of this solution is the male end, which is connected to the female seat 500 of the board-to-board connector through the docking protrusion 201. A number of power terminals 501 that are inserted and paired with the floating terminals 300 are inserted into the female seat. The power terminal includes a holding part 502 and two oppositely arranged elastic arm parts 503. A docking gap for pairing and connecting the docking protrusion 201 is provided between the two elastic arm parts 503. One end of the elastic arm part 503 close to the holding part 502 is formed with an inwardly folded part 504 by inward folding. The inwardly folded part 504 formed by bending increases the elastic length, thereby enhancing the plastic deformation and elastic ability. Contact points 505 for pairing the first contact part 3011 and the second contact part 3013 are provided on the inner sides of the two elastic arm parts 503. Specifically, the male board-to-board connector is inserted into the docking gap through the docking protrusion 201, so that the first contact part 3011 and the second contact part 3013 are respectively in contact with the contact points on the inner sides of the two elastic arm parts 503.

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

[0085] The above is only a preferred embodiment of the present invention, and it is not a limitation to the present invention in any form. Although the present invention is disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, when making some changes or modifications using the above-disclosed technical content as equivalent change equivalent embodiments, but 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 according to the technical means of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A dual-contact floating board-to-board connector, comprising a fixed seat and a floating seat arranged in the fixed seat, wherein a receiving cavity for inserting the floating seat is formed inside the fixed seat, and the floating seat is inserted in the receiving cavity, characterized in that: A docking groove for docking is provided in the middle of the floating seat, and a plurality of floating terminals are connected to the floating seat by plugging, and a groove structure for matching and plugging the floating terminals is provided on the floating seat; The floating terminal is provided with a contact portion, a plug-in portion, an elastic portion, a limit portion and a terminal welding portion in sequence by bending, the contact portion includes a first contact portion, a bent contact portion and a second contact portion formed in sequence by bending, the first contact portion and the second contact portion are arranged opposite to each other to form a double contact plane, the bent contact portion is arranged between the first contact portion and the second contact portion, a pressing block with protrusions on both sides is arranged in the middle of the bent contact portion, an insertion portion is formed at the end of the first contact portion, an end of the second contact portion away from the first contact portion is extended by bending and connected to the plug-in portion, and a side surface of the plug-in portion extends outward and forms an outwardly protruding stepped shoulder with the plug-in portion and the elastic portion; The groove structure on the floating seat includes a card connection groove and a plug-in groove. The floating terminal is matched and inserted with the card connection groove and the plug-in groove on the floating seat through the contact part and the plug-in part. The card connection groove includes a first card groove, a positioning groove and a second card groove that are connected to each other. The first card groove is formed on the inner wall of the docking groove. The inner wall of the docking groove is formed with an insertion groove that is connected to the second card groove, so that the first contact part is matched and inserted into the first card groove, and is embedded and matched with the insertion groove through the insertion part. The positioning groove and the second card groove are formed on the outer surface of the floating seat, and the second card groove is arranged opposite to the first card groove.

2. A dual-contact floating board-to-board connector according to claim 1, characterized in that: A docking protrusion is formed on the top of the floating seat, and the docking groove is a groove arranged in the middle of the docking protrusion. The second card slot is arranged on the outer side of the docking protrusion, and one end of the second card slot extends to the bottom and is connected with the plug-in slot. The plug-in slot is arranged on the outer side of the floating seat, and the width of the plug-in slot is greater than that of the second card slot.

3. A dual-contact floating board-to-board connector according to claim 2, characterized in that: The floating seat is provided with symmetrically arranged limit feet on both sides, one end of the limit foot extends outward to form a limit protrusion, and the fixed seat is provided with a clamping groove for matching and clamping the limit protrusion. The floating seat is inserted into the accommodating cavity through the limit foot, so that the limit protrusion on the limit foot is clamped and matched with the clamping groove, and the inner side of the floating seat is provided with a reinforcing rib connected to the limit foot.

4. A dual-contact floating board-to-board connector according to claim 1, characterized in that: The width of the plug-in portion is greater than that of the contact portion and the elastic portion. The plug-in portions are paired and inserted into the plug-in groove to form a clamping limit. The side surfaces of the plug-in portion are provided with a first plug-in protrusion, a second plug-in protrusion and a third plug-in protrusion with successively decreasing protrusion amplitudes. The first plug-in protrusion, the second plug-in protrusion and the third plug-in protrusion are arranged in sequence to form a stepped shape.

5. A dual-contact floating board-to-board connector according to claim 2, characterized in that: The first contact portion and the second contact portion are arranged relative to each other so that the outer sides of the first contact portion and the second contact portion respectively form a first contact plane and a second contact plane. The pressing block is arranged on the bent contact portion, and the width of the pressing block is greater than the bent contact portion.

6. A dual-contact floating board-to-board connector according to claim 5, characterized in that: The positioning groove is arranged on the top surface of the docking 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 clamping the side of the pressure block, and a pressure groove for the matching pressure block is formed in the middle of the positioning groove.

7. A dual-contact floating board-to-board connector according to claim 5, characterized in that: The first contact portion and the bent contact portion are connected to the second contact portion in a "U"-shaped extension, and the width of the insertion portion is smaller than the first contact portion.

8. A dual-contact floating board-to-board connector according to any one of claims 1 to 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 which are arranged in sequence. The end of the first elastic floating part away from the second elastic floating part is connected to the plug-in 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 accommodating cavity through the matching connection between the floating seat and the fixed seat.

9. A dual-contact floating board-to-board connector according to claim 1, characterized in that: The inner side surface of the accommodating cavity is provided with a limiting groove for matching the clamping limiting part, and the limiting part includes a first limiting protrusion, a second limiting protrusion and a third limiting protrusion with increasing protrusion widths in sequence, and the first limiting protrusion, the second limiting protrusion and the third limiting protrusion are extended toward the terminal welding part in sequence.

10. A dual-contact floating board-to-board connector according to any one of claims 1 to 7, characterized in that: The outer side surface of the fixing seat is connected with a fixing plate for welding installation, and the outer side surface of the fixing seat is provided with a fixing slot for matching installation of the fixing plate.

Images