Small-spacing high-speed floating connector assembly

Abstract

The invention relates to the field of electrical equipment, and discloses a small-spacing high-speed floating connector assembly which comprises a female-end connector and a male-end connector, the female-end connector comprises a first shell, a floating shell and a first conductive terminal, the first shell is provided with a floating cavity and a first plugging cavity, the floating shell is provided with a plugging cavity and a second plugging cavity, and the first conductive terminal is provided with a second conductive terminal. The first conductive terminal is inserted into the first insertion cavity and the second insertion cavity, and a floating space is formed between the floating shell and the floating cavity; and a compensation limiting structure is arranged in the floating space. According to the invention, the displacement between the first shell and the floating shell is within a limited safety range, so that in the use process of the whole floating connector, the movement of the floating shell is within a reasonable range regardless of large vibration or large insertion and extraction force from the outside, the first conductive terminals are not completely separated from the first insertion cavity, and the service life of the first conductive terminals is prolonged. And elastic failure caused by overlarge deformation of the first conductive terminals is avoided, so that the service life and the safety of the whole floating connector are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical equipment, in particular to a small-pitch high-speed floating connector assembly. BACKGROUND

[0002] High-speed floating connector is a kind of precision electronic components, designed for transmission of high-speed signals in systems requiring high reliability and high performance. Its core feature is the "floating" structure, that is, there is a small axial and radial position deviation between the plug and the socket of the connector, so as to automatically compensate for the alignment error caused by manufacturing tolerance, thermal expansion and contraction or vibration impact. This self-correcting ability effectively avoids installation stress and ensures the long-term stability of the connection. At the same time, through careful impedance matching, shielding design and differential signal transmission scheme, it can support high-speed data rates of several Gbps to several tens of Gbps, perfectly combining high-reliability mechanical properties and excellent electrical performance. Therefore, high-speed floating connector is widely used in communication base stations, data center servers, industrial equipment and automotive electronics, etc. in fields with strict requirements on signal integrity and connection durability.

[0003] In order to meet the demand of miniaturization and high-density integration of electronic products, and effectively save PCB space, small-pitch high-speed floating connector or small-pitch high-speed floating connector assembly is designed and manufactured, wherein the small-pitch refers to the center distance between the connector terminals being extremely small, usually less than 1mm.

[0004] The female connector of the existing small-pitch high-speed floating connector assembly is mainly composed of a female housing, a floating housing and a conductive terminal, wherein the floating compensation capability of the small-pitch high-speed floating connector assembly is realized by the connection of the elastic conductive terminal and the spaced female housing and floating housing. However, in order to ensure that the conductive terminal can provide elastic compensation, the conductive terminal is only inserted on the female housing and the floating housing, and the limiting means is only to stamp a convex bump on the outer wall of the conductive terminal to locally abut against the inner wall of each housing. This limiting method may cause the displacement between the floating housing and the female housing to be too large when encountering a large vibration, or when the male connector of the small-pitch high-speed floating connector assembly is plugged in with too much force. The small-pitch leads to the limited stiffness and elastic deformation capability of the conductive terminal, and the excessive displacement will cause the conductive terminal to be damaged due to excessive deformation. At the same time, excessive displacement is also easy to cause the conductive terminal to be separated from the female housing and / or the floating housing, affecting the normal use of the small-pitch high-speed floating connector assembly and reducing the service life. SUMMARY

[0005] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present application is to provide a small-pitch high-speed floating connector assembly to solve the problem that the conductive terminal of the high-density integrated connector is easily damaged due to excessive deformation caused by excessive plugging force.

[0006] To solve the above technical problems, one technical scheme adopted by the present application is to provide a small-pitch high-speed floating connector assembly including a female connector and a male connector, the female connector including a first shell, a floating shell and a first conductive terminal, the first shell being provided with a floating cavity and a first plug cavity, the floating cavity being configured to allow the floating shell to move in and out, the floating shell being provided with a plug cavity and a second plug cavity, the first conductive terminal being arranged in the first plug cavity and the second plug cavity, and a floating space being formed between the floating shell and the floating cavity; and a compensation limiting structure being arranged in the floating space to control the displacement compensation range of the floating shell.

[0007] Further, the compensation limiting structure includes a first limiting part fixedly connected to the inner wall of the floating cavity, a second limiting part movably connected to the floating shell, and a trigger part connected to the second limiting part and used to make the second limiting part be in a limiting state or an unlocking state relative to the first limiting part; when the second limiting part is in the limiting state, a limited space is formed between the first limiting part and the second limiting part to allow the second limiting part to move with the floating shell within a limited range.

[0008] Further, the floating cavity is provided with a step surface; the first limiting part includes a first hook-shaped plate having one side fixedly connected to the step surface and the other side bent towards one side of the floating shell to form a first free side; the floating shell is provided with a mounting cavity communicating with the floating space; the second limiting part includes a rotating shaft rotatably connected to the mounting cavity and a second hook-shaped plate having one side fixedly connected to the rotating shaft and the other side bent towards one side of the first limiting part to form a second free side; and the trigger part is connected to the rotating shaft to make the second hook-shaped plate have the limiting state and the unlocking state relative to the first hook-shaped plate; when the second hook-shaped plate is in the limiting state, the limited space is formed between the first hook-shaped plate and the second hook-shaped plate, and the second free side is located in the first hook-shaped plate and cannot pass through the movable opening.

[0009] Further, the second free side is configured to have a moving track when switching between the limiting state and the unlocking state with the rotating shaft as the center; and the first free side and the step surface are both located outside the moving track.

[0010] Further, the mounting cavity penetrates through the floating shell along the plug direction away from the second plug cavity and has a receiving groove segment; the trigger part has a bent end, the bent end is located outside the floating shell when the second hook-shaped plate is in the unlocking state and is abutted in the receiving groove segment when the male connector is arranged in the second plug cavity, and the second hook-shaped plate is in the limiting state when the bent end is located in the receiving groove segment.

[0011] Further, the second plug-in cavity penetrates the floating housing along the width direction to communicate with the floating space; the first conductive terminal comprises a first welding part for welding with the circuit board, a first fastening part for being inserted into the first plug-in cavity, an elastic compensation part movably penetrating the floating space and the second plug-in cavity, and a second fastening part for being inserted into the second plug-in cavity, and the second fastening part has a contact guiding part extending into the plug-in cavity for abutting against the male connector.

[0012] Further, the first plug-in cavity comprises a first movable cavity section and a first fastening cavity section wider than the first movable cavity section, the first fastening part is inserted into the first fastening cavity section along the plug-in direction and abuts against the first fastening cavity section through a first convex part; the elastic compensation part comprises a first section extending along the inner wall of the first movable cavity section and being spaced apart, a second section extending along the inner wall of the floating cavity and being spaced apart from the first section, and a third section extending along the inner wall of the second plug-in cavity and being spaced apart from the second section after being bent.

[0013] Further, the second plug-in cavity comprises two second fastening cavity sections along the plug-in direction and being separately arranged along the width direction on both sides of the plug-in cavity, and a second movable cavity section narrower than the second fastening cavity section and surrounding the second fastening cavity sections, and the elastic compensation part penetrates the second movable cavity section; the second fastening part comprises two fastening sections extending along the plug-in direction and being spaced apart, and a connecting section connected to the two fastening sections, and the contact guiding part is formed on a section of the fastening section away from the connecting section and inwardly curved, the elastic compensation part is connected to one of the contact guiding parts, and the two contact guiding parts abut against the second fastening cavity section through a second convex part.

[0014] Further, the outer wall of the first housing is surrounded by a compensation housing.

[0015] Further, the male connector comprises a second housing with a third plug-in cavity and a second conductive terminal inserted into the third plug-in cavity, the second housing has a plug-in part for being inserted into the plug-in cavity, the third plug-in cavity has a U-shaped matching cavity section opened on the plug-in part and outwardly communicated along the width direction, and the second conductive terminal has a matching section arranged along the matching cavity section.

[0016] The small-pitch high-speed floating connector assembly has at least the following beneficial effects: the compensation limiting structure arranged in the floating space can make the displacement between the first housing and the floating housing in the width direction and the plug-in direction within a limited safe range, so that the floating housing moves within a reasonable range no matter how large the vibration or the plug-in force from the outside is, the first conductive terminal does not completely separate from the first plug-in cavity, and the deformation of the first conductive terminal does not cause the elastic failure, thereby improving the service life and safety of the floating connector. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the connector structure of the present invention; Figure 2 This is an exploded view of the connector of the present invention; Figure 3 This is a front sectional view of the connector of the present invention; Figure 4 for Figure 2 An enlarged view of part A shown; Figure 5 for Figure 2 An enlarged view of part B shown; Figure 6 This is a schematic diagram of the compensation shell of the present invention; Figure 7 This is a schematic diagram of the structure of the first housing of the present invention; Figure 8 This is a side sectional view of the first housing of the present invention; Figure 9 This is a side sectional view of the floating hull of the present invention; Figure 10 This is a schematic diagram of the structure of the first conductive terminal of the present invention; Figure 11 This is a half-sectional schematic diagram of the female connector of the present invention; Figure 12 This is a front sectional view of the female connector of the present invention; Figure 13 for Figure 12 An enlarged view of section C shown; Figure 14 This is a schematic diagram of the structure of the second housing of the present invention; Figure 15 This is a front sectional view of the second housing of the present invention; Figure 16 This is a schematic diagram of the structure of the second conductive terminal of the present invention. The meanings of the labels in the attached diagram are as follows: The first shell 1, the floating cavity 11, the first plug cavity 12, the first cavity section 121, the second cavity section 122, the third cavity section 123, the first fastening cavity section 124, the welding cavity section 125, the connecting face 13, the inner layer part 14, the interval cavity 141, the avoiding cavity 142, the first plug-in face 15, the stepped face 16, the buckle 171, the protruding block 172, the perforation 173, the compensation shell 2, the clamping hole 21, the concave edge 221, the extension piece 222, the bent leg 223, the floating shell 3, the wide section 31, the inclined face 311, the narrow section 32, the plug cavity 33, the second plug cavity 34, the fourth cavity section 341, the fifth cavity section 342, the second fastening cavity section 343, the second plug-in face 351, the matching face 352, the center part 36, the mounting cavity 37, the first limiting face 371, the second limiting face 372, the containing groove section 373, the first conductive terminal 4, the first welding part 41, the first fastening part 42, the elastic compensation part 43, the first section 431, the second section 432, the third section 433, the second fastening part 44, the fastening section 441, the connecting section 442, the conductive part 45, the first convex bump 461, the second convex bump 462, the compensation limiting structure 5, the first limiting part 51, the first hook-shaped plate 511, the first straight section 5111, the first curved section 5112, the first free side 512, the movable opening 513, the displacement gap 514, the second limiting part 52, the pivot 521, the second hook-shaped plate 522, the second straight section 5221, the second curved section 5222, the second free side 523, the trigger part 53, the curved end 531, the moving track 54, the second shell 6, the head part 61, the plug part 62, the plug cavity 63, the third plug cavity 64, the third fastening cavity section 641, the matching cavity section 642, the fourth fastening cavity section 643, the welding tab 65, the second conductive terminal 7, the third fastening part 71, the matching part 72, the second welding part 73. DETAILED DESCRIPTION

[0018] The application will be further described below with reference to the drawings.

[0019] Please refer to Figures 1 to 16 The small-pitch high-speed floating connector assembly includes a female connector and a male connector, and the male connector and the female connector are connected through plug-in to realize the on-off of high-speed data.

[0020] Please refer to Figures 1 to 13 The female connector includes a first shell 1, a compensation shell 2 arranged on the outer sidewall of the first shell 1, a floating shell 3 movably arranged in the first shell 1, a first conductive terminal 4 arranged between the first shell 1 and the floating shell 3, and a compensation limiting structure 5 arranged between the first shell 1 and the floating shell 3.

[0021] Please refer to Figure 4 , Figure 7 and Figure 8The first shell 1 is set to a corresponding shape according to the application scene, in the embodiment, the first shell 1 is cuboid structure and formed by plastic injection, thus has length, width and height. A floating cavity 11 is opened on the first shell 1 along the height direction and penetrates the first shell 1, the floating shell 3 is installed in the floating cavity 11 along the height direction. One side of the first shell 1 along the height direction is defined as a connecting surface 13, a first plug cavity 12 is also opened on the first shell 1, the first plug cavity 12 penetrates the connecting surface 13 along the height direction, the first conductive terminal 4 is plugged in the first plug cavity 12, wherein the height direction is defined as a plug direction, the first conductive terminal 4 is inserted in the first plug cavity 12 along the plug direction.

[0022] In order to limit the floating shell 3 to move infinitely in the direction of insertion, facilitate the arrangement of the first insertion cavity 12 and the installation of the first conductive terminal 4, and also take into account the principle of saving materials, two inner layers 14 are integrally connected on both sides of the first shell 1 along the width direction. The length of the two inner layers 14 is arranged along the length direction of the first shell 1 and integrally connected to the inner wall of the first shell 1. The inner layer 14 is spaced from the inner wall of the first shell 1 to form a spacing cavity 141. The side of the two inner layers 14 close to the connecting surface 13 in the direction of insertion is shorter than the connecting surface 13 and is recessed relative to the connecting surface 13, so that the inner layer 14 and the connecting surface 13 are spaced to form a clearance cavity 142 that communicates with the spacing cavity 141. The side of the first shell 1 away from the connecting surface 13 in the direction of insertion is defined as the first mating surface 15. The side of the two inner layers 14 away from the connecting surface 13 in the direction of insertion is shorter than the first mating surface 15. The side of the two inner layers 14 away from the connecting surface 13 in the direction of insertion is integrally connected to the first shell 1 after extending along the width direction and forms a step surface 16 on the side close to the first mating surface 15. The floating cavity 11 is formed by the first shell 1 and the inner layer 14 including the step surface 16 and has a T shape. The first insertion cavity 12 is opened in two symmetrical groups and is arranged on the two side walls of the two inner layers 14 and the first shell 1 along the width direction. Each group of the first insertion cavity 12 is provided with a plurality of first insertion cavities 12 and is distributed at equal intervals. Each first insertion cavity 12 communicates with the spacing cavity 141 and the clearance cavity 142. The spacing cavity 141 not only reduces the material of the first shell 1, but also reduces the processing difficulty of the first insertion cavity 12. In addition, the formation of the spacing cavity 141 can also improve the heat dissipation effect of the first conductive terminal 4 and the first insertion cavity 12. The distance between any two adjacent first insertion cavities 12 is within 1mm. In particular, in this embodiment, the distance between the two adjacent first insertion cavities 12 can be 0.4mm, realizing ultra-small spacing. The first conductive terminal 4 is matched with the first insertion cavity 12, so that the distance between the two adjacent first conductive terminals 4 can be 0.4mm up and down after assembly, realizing high-density integration and miniaturization. The first insertion cavity 12 includes a first cavity section 121 opened on the side wall of the first shell 1, a second cavity section 122 opened to the spacing cavity 141, and a third cavity section 123 opened to the inner layer 14. The first cavity section 121 is recessed on the side wall of the first shell 1 and penetrates the spacing cavity 141 along the width direction. The second cavity section 122 is recessed on the side surface of the spacing cavity 141 close to the first mating surface 15 and communicates with the first cavity section 121. The third cavity section 123 is recessed on the side of the inner layer 14 close to the connecting surface 13 along the direction of insertion and communicates the floating cavity 11 and the spacing cavity 141 along the width direction. The third cavity section 123 communicates with the clearance cavity 142 along the direction of insertion.

[0023] Please refer to Figure 1 , Figure 6 and Figure 7, the compensation shell 2 is formed in a rectangular frame structure with a width matching the height of the first shell 1 and surrounding the outer wall of the first shell 1. The compensation shell 2 is made of metal such as steel to strengthen the overall strength of the first shell 1 and prevent the first shell 1 from being damaged by external impact. To enhance the strength between the compensation shell 2 and the first shell 1, triangular-shaped buckles 171 are formed on any two opposite outer walls of the first shell 1, the buckles 171 are wide near the connecting surface 13 and gradually narrow to the level of the outer wall of the first shell 1 near the first pair of insertion surfaces 15, so that the buckles 171 form a guide slope 311 to facilitate the installation of the compensation shell 2. The compensation shell 2 is provided with a clamping groove or hole 21 corresponding to the position of each buckle 171, and the buckle 171 is clamped in the clamping groove or hole 21 after the compensation shell 2 is assembled on the first shell 1, thereby limiting the compensation shell 2 on the first shell 1.

[0024] To further enhance the connection firmness between the compensation shell 2 and the first shell 1, the clamping groove or hole 21 is provided on one of the opposite sides of the compensation shell 2, and a recessed edge 221 is recessed on the other opposite side of the compensation shell 2 and along the width direction corresponding to the side of the connecting surface 13. The recessed edge 221 is integrally formed with an extension piece 222 and a bent leg 223 extending from the extension piece 222 and perpendicular to the extension piece 222 and extending away from the compensation shell 2. The buckle 171 on the first shell 1 corresponds to the clamping groove or hole 21, and a protrusion 172 is provided on the first shell 1 corresponding to the extension piece 222, and a through hole 173 is provided on the protrusion 172 for the extension piece 222 to pass through. The bent leg 223 is integrally and uniformly extended from the extension piece 222, and the bent leg 223 is formed by bending the part of the extension piece 222 that passes out of the through hole 173 after the extension piece 222 passes through the through hole 173. The recessed edge 221 and the bent leg 223 are used to limit the movement of the compensation shell 2 in the insertion direction.

[0025] Please refer to Figure 2 , Figure 5 and Figure 9The floating shell 3 corresponds to the formation of the floating cavity 11 and is provided with an integral wide section 31 and two narrow sections 32 which are narrower than the wide section 31 on both sides. The wide section 31 and the narrow section 32 are both substantially cuboid structures and the length, width and height are consistent with the length, width and height of the first shell 1. The overall height of the floating shell 3 is less than the depth of the floating cavity 11, the width and length of the wide section 31 are less than the width and length of the part of the floating cavity 11 surrounded by the inner side wall of the first shell 1, and the width and length of the narrow section 32 are less than the width and length of the part of the floating cavity 11 surrounded by the inner layer 14, so that the floating shell 3 is spaced apart from the floating cavity 11 to form a floating space after being installed in the floating cavity 11. In order to reduce interference when the floating shell 3 moves in the floating space, a bevel 311 is formed on the wide section 31 on both sides of the wide direction which is wider than the narrow section 32 and is obliquely opened to the outer wall of the narrow section 32. After the floating shell 3 is installed in the floating cavity 11, the bevel 311 is spaced apart and directly opposite to the step surface 16 and the inner side surface of the inner layer 14, so as to improve the moving range of the floating shell 3 and reduce interference.

[0026] A plug-in cavity 33 and a second plug-in cavity 34 are formed on the floating shell 3. The male connector is plugged into the plug-in cavity 33 along the plug-in direction, and a part of the first conductive terminal 4 is inserted into the plug-in cavity 33. Among them, the side of the wide section 31 away from the narrow section 32 along the plug-in direction is defined as a second mating surface 351, and the side of the narrow section 32 away from the wide section 31 along the plug-in direction is defined as a mating surface 352. The plug-in cavity 33 is recessed from the second mating surface 351 and is symmetrically arranged as two groups corresponding to the two groups of first plug-in cavities 12. The length of the two groups of plug-in cavities 33 is arranged along the length direction of the floating shell 3, and each end of the two groups of plug-in cavities 33 is communicated with the end of the other group so that the two groups of plug-in cavities 33 form a cuboid frame structure as a whole, so as to facilitate the plug-in of the male connector and improve the bonding force. Among them, the inner wall of the plug-in cavity 33 is U-shaped along the plug-in direction, so that the floating shell 3 located inside the two groups of plug-in cavities 33 forms a center part 36 located in the middle of the entire floating shell 3.

[0027] The second plug cavity 34 is formed on the narrow section 32 and the wide section 31 and is also arranged in two groups, each of which is provided with a plurality of second plug cavities 34 in the same number and position as the first plug cavities 12, and the spacing between adjacent second plug cavities 34 is consistent with the spacing between the first plug cavities 12. Among them, the second plug cavity 34 is opened inward from the outer side wall of the floating shell 3 to the outer wall of the center part 36 along the wide direction to include the fourth cavity section 341 and the fifth cavity section 342. The fourth cavity section 341 is located on the part of the floating shell 3 outside the plug cavity 33 and penetrates the outer side wall of the floating shell 3 and the plug cavity 33 along the wide direction, and the fourth cavity section 341 also penetrates the mating surface 352 along the plug direction and is L-shaped, so that the first conductive terminal 4 can be inserted into the second plug cavity 34 along the plug direction and extend out of the second plug cavity 34 along the wide direction to cooperate with the first plug cavity 12. The fifth cavity section 342 is recessed on the center part 36 along the wide direction and communicates with the plug cavity 33 along the wide direction, and the fifth cavity section 342 penetrates the mating surface 352 along the plug direction and communicates with the fourth cavity section 341, so that the second plug cavity 34 is communicated with the floating space after being installed in the floating cavity 11.

[0028] Please refer to Figure 10, the first conductive terminal 4 includes a first soldering portion 41 for soldering to a circuit board, a first fastening portion 42 for being inserted into the first insertion cavity 12, an elastic compensation portion 43 for being movably disposed in the floating space and the second insertion cavity 34, and a second fastening portion 44 for being inserted into the second insertion cavity 34, and the second fastening portion 44 has a contact portion 45 extending into the plug-in cavity 33 for abutting against a male connector. To correspond to the structure of the first conductive terminal 4, the first insertion cavity 12 includes a first movable cavity section and a first fastening cavity section 124 wider than the first movable cavity section, the first fastening portion 42 is inserted into the first fastening cavity section 124 along the insertion direction and is abutted against the first fastening cavity section 124 by a first protrusion 461. The first movable cavity section is composed of a first cavity section 121, a second cavity section 122 and a third cavity section 123, and the first movable cavity section is recessed on the connection surface 13 and outside the spacing cavity 141 to have a soldering cavity section 125 for the first soldering portion 41 to pass through, so that the first soldering portion 41 can be bent from the first fastening portion 42 and extended out of the first housing 1 along the width direction from the soldering cavity section 125 to be soldered to the circuit board by tin. The first fastening cavity section 124 is recessed on the inner wall of the first cavity section 121 from the first cavity section 121 along the length direction, so that the width of the first fastening cavity section 124 is wider than that of the first movable cavity section. The first fastening cavity section 124 penetrates through the connection surface 13 along the insertion direction. The first protrusion 461 is protruded on both sides of the first fastening portion 42, and the first fastening portion 42 of the first conductive terminal 4 is inserted into the first fastening cavity section 124 from one side of the connection surface 13 along the insertion direction, and the first protrusion 461 is abutted against the inner wall of the first fastening cavity section 124 for limiting the first conductive terminal 4. The elastic compensation portion 43 includes a first section 431 extending along the inner wall of the first movable cavity section and spaced apart, a second section 432 extending along the inner wall of the floating cavity 11 from the first section 431 and spaced apart, and a third section 433 extending along the width direction towards the second insertion cavity 34 after being bent from the second section 432 and spaced apart. Among them, the first section 431 is bent after extending along the width direction towards the inside, then bent and extends along the insertion direction towards one side of the connection surface 13, and then bent and extends along the width direction towards the inside. The second section 432 extends along the insertion direction towards one side of the first pair of insertion surfaces 15 from the first section 431, and the first section 431 surrounds the inner layer portion 14 on the inside, which provides a certain degree of limitation to prevent excessive deformation and improve stability.

[0029] In order to correspond to the structure of the first conductive terminal 4, the second plug cavity 34 comprises two second fastening cavity sections 343 which are opened along the plug direction and are separately arranged along the width direction at two sides of the plug cavity 33, and a second movable cavity section which is narrower than the second fastening cavity section 343 and is arranged around each second fastening cavity section 343, and the elastic compensation part 43 is arranged in the second movable cavity section. The second movable cavity section is composed of a fourth cavity section 341 and a fifth cavity section 342, and the two second fastening cavity sections 343 are respectively arranged in the fourth cavity section 341 and the fifth cavity section 342, and the two second fastening cavity sections 343 penetrate the mating surface 352 along the plug direction. The second fastening part 44 comprises two fastening sections 441 which are arranged along the plug direction and are spaced apart, and a connecting section 442 which is connected to the two fastening sections 441, and the connecting section 442 makes the fastening sections 441 form two, and each of the two fastening sections 441 is inwardly curved to form the contact part 45 on a section away from the connecting section 442, so that the first connector can be in contact with the male connector from both sides through the contact part 45, and the reliability between the first connector and the male connector is improved. The elastic compensation part 43 is connected to a contact part 45 arranged in the second movable cavity section, and the two contact parts 45 are abutted to the second fastening cavity section 343 through a second protrusion 462.

[0030] In use, after the first fastening part 42 is aligned with the first fastening cavity section 124 and the second fastening part 44 is aligned with the second fastening cavity section 343 from one side of the connecting surface 13, the first conductive terminal 4 can be inserted into the first plug cavity 12 and the second plug cavity 34 along the plug direction, and after the soldering leg is arranged in the soldering cavity section 125, the elastic compensation part 43 is arranged in the first movable cavity section, the floating space and the second movable cavity section, and the first protrusion 461 and the second protrusion 462 prevent the first conductive terminal 4 from falling off.

[0031] Please refer to Figure 11 and Figure 13The compensation limiting structure 5 is arranged in the floating space to control the displacement compensation range of the floating shell 3 within a limited range, so as to avoid the adverse damage to the first conductive terminal 4 caused by excessive displacement due to excessive pulling force or external force. The compensation limiting structure 5 comprises a first limiting part 51 fixedly connected to the inner wall of the floating cavity 11, a second limiting part 52 movably connected to the floating shell 3, and a trigger part 53 connected to the second limiting part 52 and used for enabling the second limiting part 52 to be in a limiting state or an unlocked state relative to the first limiting part 51. When the second limiting part 52 is in the limiting state, a limited space for enabling the second limiting part 52 to move with the floating shell 3 within a limited range is formed between the first limiting part 51 and the second limiting part 52. Under the limitation of the limited space, the movement of the floating shell 3 is reduced and limited, which guarantees the displacement compensation while avoiding the excessive deformation of the first conductive terminal 4 caused by the excessive pulling of the first conductive terminal 4 due to the excessive displacement of the floating shell 3 relative to the first shell 1, so as to affect the elastic compensation effect of the first conductive terminal 4, even cause short circuit and other adverse conditions due to the deformation of the first conductive terminal 4 that cannot be reset, and affect the service life of the entire connector.

[0032] The first limiting part 51 comprises a first hook-shaped plate 511 fixedly connected to one side of the stepped surface 16 and having the other side bent towards one side of the floating shell 3 to form a first free side 512. The first free side 512 refers to the side edge of the first limiting part 51 away from the stepped surface 16, and the first free side 512 is spaced from the stepped surface 16 to form a movable opening 513 between the side edge of the first free side 512 and the stepped surface 16. The first hook-shaped plate 511 has a first flat section 5111 flat along the plug-in direction and a first curved section 5112 curved away from the stepped surface 16. The two ends of the first curved section 5112 are towards the stepped surface 16, and the middle part of the first curved section 5112 is arched towards the first plug-in surface 15 along the plug-in direction. The side edge of the first curved section 5112 away from the first flat section 5111 is the first free side 512. It should be noted that a displacement gap 514 is left between the curved section and the inclined surface 311 of the floating shell 3 mounted in the floating cavity 11, and the displacement gap 514 is consistent with the spacing of the limited space, so that the first limiting part 51 does not limit the movement of the floating shell 3.

[0033] The floating shell 3 is provided with a mounting cavity 37 communicating with the floating space, and the second limiting part 52 is mounted in the mounting cavity 37, so that the second limiting part 52 is arranged without affecting the arrangement of the second plug-in cavity 34 and the first conductive terminal 4. The mounting cavity 37 is recessed in the wide section 31 of the floating shell 3 and is formed from the first pair of plug-in surfaces 15, so as to avoid excessive influence of the compensation limiting structure 5 on the rigidity of the floating shell 3 itself. Therefore, the compensation limiting structure 5 is provided as one, and the second limiting part 52 is provided on the side of the floating shell 3 along the width direction and outside the plug-in cavity 33, and the corresponding first limiting part 51 is connected to the corresponding step surface 16. The mounting cavity 37 is formed as a special-shaped cavity by being communicated with the inclined surface 311 corresponding to the wide section 31 and outwardly penetrating the floating shell 3 along the width direction. The mounting cavity 37 is provided with a first limiting surface 371 parallel to the plug-in direction and communicated with the second plug-in cavity 34, and a second limiting surface 372. The first limiting surface 371 extends to the inclined surface 311, and the second limiting surface 372 is spaced apart from the second plug-in cavity 34 and located on the side close to the second pair of plug-in surfaces 351. The part of the mounting cavity 37 with the second limiting surface 372 is configured as a receiving groove section 373.

[0034] The second limiting part 52 comprises a rotating shaft 521 rotatably connected in the mounting cavity 37 and a second hook-shaped plate 522 fixedly connected to one side of the rotating shaft 521 and having the other side bent to form a second free side 523 towards the first limiting part 51. The rotating shaft 521 is arranged along the length direction of the floating shell 3 and rotatably connected to the inner wall of the mounting cavity 37 through the micro bearing embedded in the inner wall of the mounting cavity 37, so that the rotating shaft 521 can rotate along the axial direction. The trigger part 53 is connected to the rotating shaft 521 and used to rotate the second limiting part 52 by the rotating shaft 521 when the trigger part 53 is triggered. The second hook-shaped plate 522 has a shape consistent with the first hook-shaped plate 511 and comprises a second flat section 5221 fixedly connected to the rotating shaft 521 and a second curved section 5222 curved from the second flat section 5221. The difference is that the two side edges of the second curved section 5222 are curved towards opposite directions relative to the two side edges of the first curved section 5112, and the side edge of the second curved section 5222 away from the second flat section 5221 is curved towards the side away from the second insertion cavity 34 relative to the second flat section 5221, which is defined as the second free side 523. The second hook-shaped plate 522 is not provided on the two end portions of the rotating shaft 521, so that a torsion spring (not shown in the figure) can be sleeved thereon. When the second hook-shaped plate 522 is rotated to abut against the first limiting face 371, the position and state of the second hook-shaped plate 522 relative to the first hook-shaped plate 511 at this time are configured as an unlocking state, at which time the second curved section 5222 has a small gap with the stepped face 16, the second free side 523 is located outside the first free side 512 and staggered with the first free side 512 in the insertion direction, and the second flat section 5221 is inclined relative to the insertion direction at this time. At this time, moving the floating shell 3 along the insertion direction will not affect its movement, so that when the second hook-shaped plate 522 is in the unlocking state, the torsion spring is in a normal state, and the second hook-shaped plate 522 in the unlocking state under the action of the torsion spring will not affect the installation of the floating shell 3 when the floating shell 3 is installed. Even if the first free side 512 and the second free side 523 overlap in the insertion direction during installation, the curved first curved section 5112 and the second curved section 5222 can guide and slide relative to each other after contacting each other, so that the floating shell 3 is moved to the position where the second free side 523 is staggered with the first free side 512 and is moved to the appropriate installation position. The cooperation between the first conductive terminal 4 and the second insertion cavity 34 will make the floating shell 3 and the installation located in the preset position, so that the position deviation of the first hook-shaped plate 511 and the second hook-shaped plate 522 basically does not occur.

[0035] When the pressing trigger 53 is pressed, the trigger 53 will eventually be pressed against the second limit surface 372, at which time the trigger 53 is entirely located in the accommodation groove segment 373, at which time the second flat segment 5221 of the second hook-shaped plate 522 is parallel to the first flat segment 5111, at which time the two side edges of the second curved segment 5222 are both directed along the insertion direction towards the first pair of insertion surfaces 15 and are just opposite to the two side curved directions of the first curved segment 5112, and the first curved segment 5112 and the second curved segment 5222 are misaligned and spaced apart, and the position and state of the second hook-shaped plate 522 at this time are configured as a locked state (as shown in Figure 2 When the second hook-shaped plate 522 is in the limiting state, the spacing between the first hook-shaped plate 511 and the second hook-shaped plate 522 is a limited space, in order to ensure the uniformity of the limited space between the first curved segment 5112 and the second curved segment 5222, the shape and size of the first curved segment 5112 and the second curved segment 5222 are completely consistent, so that the spacing of the limited space is uniform, the second free side 523 is located in the first hook-shaped plate 511 and the second free side 523 is closer to the second pair of insertion surfaces 351 in the insertion direction relative to the first free side 512, and at this time the overall size of the second curved segment 5222 in the insertion direction is greater than the size of the movable opening 513, so that the second free side 523 cannot pass through the movable opening 513 in all directions. In this way, the second hook-shaped plate 522 in the locked state can only move within the limited space relative to the first hook-shaped plate 511, and the spacing of the limited space should be ensured not to be deformed excessively within the safe deformation range according to the elastic deformation amount of the first conductive terminal 4. Not only the limited space, but also the spacing between the second curved plate and the step surface 16 in the locked state should be ensured to be consistent or similar to the spacing of the limited space, so that the movement range of the floating space is within the limited space, so as to improve the reliability and service life of the first conductive terminal 4.

[0036] Among them, the second free side 523 and the entire second curved segment 5222 are configured as a movement track 54 when switching between the limiting state and the unlocking state with the pivot 521 as the center, the movement track 54 is arc-shaped, and the first free side 512 and the step surface 16 are both located outside the movement track 54 without overlapping, so that the second curved segment 5222 can move without interfering with the step surface 16 and the first free side 512 during switching between the unlocking state and the locked state.

[0037] The trigger 53 is connected to the rotating shaft 521 to make the second hook-shaped plate 522 have a limited state and an unlocked state relative to the first hook-shaped plate 511. The trigger 53 extends in an arc shape after extending into the accommodating groove segment 373 after rotating, and has an arc-shaped end 531 at the end, and the end of the arc-shaped end 531 is bent towards the side of the second plug-in cavity 34. The arc-shaped end 531 is located outside the floating shell 3 when the second hook-shaped plate 522 is in the unlocked state, and is located within the moving range of the male connector in the plug-in direction. When the male connector is inserted into the second plug-in cavity 34, the trigger 53 is pushed until it is abutted in the accommodating groove segment 373, and the trigger 53 is then abutted on the second limiting surface 372, and the male connector is pressed on the arc-shaped end 531 of the trigger 53, and the second hook-shaped plate 522 is in the limited state when the arc-shaped end 531 is located in the accommodating groove segment 373. It should be noted that the first hook-shaped plate 511, the second hook-shaped plate 522, the rotating shaft 521 and the trigger 53 are all made of plastic, wherein an auxiliary rod (not shown in the figure) can be provided on the rotating shaft 521, which facilitates manual rotation of the rotating shaft 521 when the torsional spring fails, and the auxiliary rod is located in the floating cavity 11 when the second hook-shaped plate 522 is in the locked state. Therefore, the torsional spring can be made of plastic to reduce the influence on the connector.

[0038] In another embodiment, the trigger 53 is a foldable structure, and when it is not necessary to limit the floating shell 3, the arc-shaped end 531 can be folded outward so that the male connector cannot contact the arc-shaped end 531. The trigger 53 can be connected by several iron wires, and the arc-shaped end 531 is a separate part and is connected by internal iron wires, so as to be folded by pulling.

[0039] Please refer to Figures 1 to 3 , Figures 14 to 16 , the male connector includes a second shell 6 having a third plug-in cavity 64 and a second conductive terminal 7 inserted into the third plug-in cavity 64.

[0040] The second shell 6 is in the shape of a rectangular parallelepiped, and the length, width and height thereof correspond to the length, width and height of the first shell 1, respectively. The second shell 6 has a head portion 61 and a plug-in portion 62 which is narrower than the head portion 61 and protrudes from the head portion 61 in the plug-in direction, and is used to be inserted into the plug-in cavity 33. A third protrusion is recessed on the plug-in portion 62 at a position corresponding to the center portion 36, so as to avoid the center portion 36 and make the center portion 36 plug into the counter-plug-in cavity 63, so as to improve the bonding force between the first shell 1 and the floating shell 3. The head portion 61 of the second shell 6 also has two soldering tabs 65 inserted thereinto, and the soldering tabs 65 have fourth protrusions protruding from both sides along the width direction to abut against the second shell 6. The soldering tabs 65 are used to be soldered to the circuit board to increase the connection strength between the second shell 6 and the circuit board and to hold the circuit board.

[0041] The third plug cavity 64 is arranged in two groups corresponding to the first conductive terminal 4, each group including a number of third plug cavities 64 equal to the number of the first conductive terminal 4, each third plug cavity 64 being equidistantly distributed along the length direction, and the interval between two adjacent third plug cavities 64 being the same as the interval between two first plug cavities 12. Each third plug cavity 64 includes a third fastening cavity segment 641 opened on the head 61 and a U-shaped matching cavity segment 642 opened on the plug-in part 62 and communicated outward along the width direction, the matching cavity segment 642 being U-shaped as being opened along the outer wall and the inner wall of the plug-in part 62, and a part of the matching cavity segment 642 being located in the counter plug cavity 63 and communicated with the counter plug cavity 63.

[0042] The second conductive terminal 7 includes a third fastening part 71 for being inserted into the third fastening cavity segment 641 and a matching part 72 arranged along the matching cavity segment 642 and penetrating into the matching cavity segment 642. In order to improve the stability of the second conductive terminal 7, the part of the matching cavity segment 642 located in the counter plug cavity 63 continues to extend into the head 61 along the plug-in direction to form a fourth fastening cavity segment 643, and the end of the matching part 72 of the second conductive terminal 7 penetrates into the matching cavity segment 642. The third fastening part 71 is provided with a third protrusion on both sides along the width direction for abutting against the third fastening cavity segment 641. The second conductive terminal 7 also has a second welding part 73 connected to the third fastening part 71, which can be used for connecting with other connectors or cables, or directly welded to the circuit board, so the second welding part 73 can extend along the plug-in direction or along the width direction for welding.

[0043] The working mode of one embodiment of the small-pitch high-speed floating connector assembly is as follows: the compensation shell 2 is installed on the first shell 1, the first conductive terminal 4 is installed in the first plug-in cavity 12, the first welding part 41 abuts on the welding cavity section 125, and the second fastening part 44 and the elastic compensation part 43 of the first conductive terminal 4 are located in the floating cavity 11; at this time, the second hook-shaped plate 522 is in the unlocked state and the trigger part 53 is located outside the accommodating groove section 373, the plug-in part 62 of the floating shell 3 is moved towards the floating cavity 11 and the second fastening part 44 is aligned with each second fastening cavity section 343, then the floating shell 3 is moved in the plug-in direction to make the second fastening part 44 and the elastic compensation part 43 installed in the second plug-in cavity 34, at this time, the second hook-shaped plate 522 is still in the unlocked state; after the second conductive terminal 7 is inserted into the third plug-in cavity 64, the plug-in part 62 is inserted into the plug-in cavity 33, in the process, the head 61 gradually presses the trigger part 53 until the trigger part 53 is pressed on the second pair of insertion surfaces 351 by the head 61, then the circuit boards are welded on the second shell 6 and the first shell 1 respectively, and the first welding part 41 and the second welding part 73 are welded on the corresponding circuit boards respectively. It should be noted that a partition can also be arranged on the inner side of the first curved section 5112 in the length direction, and the second curved section 5222 has a plurality of sections in the length direction, the partition separates the inner side of the first curved section 5112 into a plurality of small cavities, the second curved section 5222 penetrates the small cavities, and the adjacent two second curved sections 5222 are spaced apart to avoid the partition, so that the movement of the floating shell 3 in the length direction can also be limited.

[0044] Compared with the prior art, the small-pitch high-speed floating connector assembly can control the movement of the floating shell 3 within a limited range, ensure the reliability of the first conductive terminal 4, and prolong the service life of the first conductive terminal 4. The movement of the floating shell 3 in the plug-in direction and the width direction is limited in the limited space, and the movement of the floating shell 3 in the length direction is limited by the first plug-in cavity 12 and the second plug-in cavity 34.

Claims

1. A small-pitch high-speed floating connector assembly comprising a female connector and a male connector, the female connector comprising a first housing, a floating housing and a first conductive terminal, the first housing being provided with a floating cavity and a first mating cavity, the floating cavity being configured to allow the floating housing to move in and out of the floating cavity, the floating housing being provided with a mating cavity and a second mating cavity, the mating cavity being configured to allow the male connector to be inserted into and pulled out of the mating cavity in a mating direction, the first conductive terminal being disposed in the first mating cavity and the second mating cavity, and a floating space being formed between the floating housing and the floating cavity; characterized in that: The floating space is provided with a compensation limiting structure for controlling the displacement compensation range of the floating shell.

2. The closely-spaced high speed floating connector assembly of claim 1, wherein: The compensation limiting structure comprises a first limiting part fixedly connected to the inner wall of the floating cavity, a second limiting part movably connected to the floating shell, and a trigger part connected to the second limiting part and used for enabling the second limiting part to be in a limiting state or an unlocking state relative to the first limiting part; when the second limiting part is in the limiting state, a limited space is formed between the first limiting part and the second limiting part for enabling the second limiting part to move with the floating shell within a limited range.

3. The closely-spaced high-speed floating connector assembly of claim 2, wherein: The floating cavity is formed with a step surface; the first limiting part comprises a first hook-shaped plate with one side fixedly connected to the step surface and the other side bent towards one side of the floating shell to form a first free side; the first free side is spaced from the step surface to form a movable opening; the floating shell is provided with a mounting cavity communicating with the floating space; the second limiting part comprises a rotating shaft rotatably connected to the mounting cavity and a second hook-shaped plate with one side fixedly connected to the rotating shaft and the other side bent towards one side of the first limiting part to form a second free side; the trigger part is connected to the rotating shaft to enable the second hook-shaped plate to have the limiting state and the unlocking state relative to the first hook-shaped plate; when the second hook-shaped plate is in the limiting state, the limited space is formed between the first hook-shaped plate and the second hook-shaped plate, and the second free side is located in the first hook-shaped plate and cannot pass through the movable opening.

4. The closely-spaced high-speed floating connector assembly of claim 3, wherein: The trajectory of the second free side relative to the rotating shaft when switching between the limiting state and the unlocking state is configured as a moving trajectory, and the first free side and the step surface are both located outside the moving trajectory.

5. The high speed, fine pitch, floating connector assembly of claim 3 or 4, wherein: The mounting cavity penetrates through the floating shell along the insertion direction away from the second insertion cavity and has a receiving groove segment; the trigger part has a bent end, the bent end is located outside the floating shell when the second hook-shaped plate is in the unlocking state, and the bent end is located in the receiving groove segment when the male connector is inserted into the second insertion cavity; the second hook-shaped plate is in the limiting state when the bent end is located in the receiving groove segment.

6. The closely spaced high speed floating connector assembly of claim 1, wherein: The second insertion cavity penetrates through the floating shell along the width direction to communicate with the floating space; the first conductive terminal comprises a first welding part for welding to the circuit board, a first fastening part for being inserted into the first insertion cavity, an elastic compensation part movably arranged in the floating space and the second insertion cavity, and a second fastening part for being inserted into the second insertion cavity, and the second fastening part has a guide part extending into the plug cavity for abutting against the male connector.

7. The closely-spaced high-speed floating connector assembly of claim 6, wherein: The first insertion cavity comprises a first movable cavity segment and a first fastening cavity segment wider than the first movable cavity segment; the first fastening part is inserted into the first fastening cavity segment along the insertion direction and abuts against the first fastening cavity segment through a first convex bump; the elastic compensation part comprises a first segment extending along the inner wall of the first movable cavity segment and spaced apart, a second segment extending along the inner wall of the floating cavity and spaced apart from the first segment, and a third segment extending along the inner wall of the floating cavity and spaced apart from the second segment.

8. The closely-spaced high-speed floating connector assembly of claim 6, wherein: The second plug cavity comprises two second fastening cavity sections arranged along the plug direction and on both sides of the plug cavity in the width direction, and two second movable cavity sections arranged around the two second fastening cavity sections and narrower than the second fastening cavity sections, and the elastic compensation part is arranged in the second movable cavity sections; the second fastening part comprises two fastening sections arranged along the plug direction and spaced apart, and a connecting section connected to the two fastening sections, and the two fastening sections are each inwardly curved to form the contact guiding part on a section away from the connecting section, the elastic compensation part is connected to one of the contact guiding parts, and the two contact guiding parts are each abutted against the second fastening cavity section by a second convex part.

9. The closely spaced high speed floating connector assembly of claim 1, wherein: The outer wall of the first shell is surrounded by a compensation shell.

10. The close pitch high speed floating connector assembly of claim 1 or 8, wherein: The male connector comprises a second shell with a third plug cavity and a second conductive terminal arranged in the third plug cavity, the second shell has a plug part arranged in the plug cavity, the third plug cavity has a U-shaped matching cavity section arranged on the plug part and outwardly communicated in the width direction, and the second conductive terminal has a matching section arranged along the matching cavity section.

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