Close pitch high speed floating connector assembly

Abstract

The application relates to the field of electrical equipment and discloses a small-pitch high-speed floating connector assembly which comprises a female connector and a male connector, the female 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 plug cavity, the floating shell is provided with a plug cavity and a second plug cavity, the first conductive terminal is inserted into the first plug cavity and the second plug cavity, and a floating space is formed between the floating shell and the floating cavity; a compensation limiting structure is arranged in the floating space. The displacement between the first shell and the floating shell is within a limited safe range, the whole floating connector is not affected by large external vibration or large plug force during use, the movement of the floating shell is within a reasonable range, the first conductive terminal cannot completely separate from the first plug cavity, the deformation of the first conductive terminal cannot be too large to cause elastic failure, and the service life and 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 high-density integrated electronic products 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:

[0018] Figure 1 This is a schematic diagram of the connector structure of the present invention;

[0019] Figure 2 This is an exploded view of the connector of the present invention;

[0020] Figure 3 This is a front sectional view of the connector of the present invention;

[0021] Figure 4 for Figure 2 An enlarged view of part A shown;

[0022] Figure 5 for Figure 2 An enlarged view of part B shown;

[0023] Figure 6 This is a schematic diagram of the compensation shell of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the first housing of the present invention;

[0025] Figure 8 This is a side sectional view of the first housing of the present invention;

[0026] Figure 9 This is a side sectional view of the floating hull of the present invention;

[0027] Figure 10 This is a schematic diagram of the structure of the first conductive terminal of the present invention;

[0028] Figure 11 This is a half-sectional schematic diagram of the female connector of the present invention;

[0029] Figure 12 This is a front sectional view of the female connector of the present invention;

[0030] Figure 13 for Figure 12 An enlarged view of section C shown;

[0031] Figure 14 This is a schematic diagram of the structure of the second housing of the present invention;

[0032] Figure 15 This is a front sectional view of the second housing of the present invention;

[0033] Figure 16The structure diagram of the second conductive terminal of the application.

[0034] The meaning of each reference sign in the drawing is as follows.

[0035] 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 spacing cavity 141, the avoiding cavity 142, the first pair of plug faces 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-pull 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 pair of plug faces 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-pull 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

[0036] The application will be further described below in conjunction with the drawings.

[0037] Please refer to Figures 1 to 16 The small-pitch high-speed floating connector assembly of the application comprises a female connector and a male connector, and the male connector and the female connector realize the on-off of high-speed data through plugging.

[0038] Please refer to Figures 1 to 13 The female connector comprises a first shell 1, a compensation shell 2 surrounding the outer sidewall of the first shell 1, a floating shell 3 movably arranged in the first shell 1, a first conductive terminal 4 interposed 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.

[0039] Please refer to Figure 4 , Figure 7 and Figure 8 , the first shell 1 is set to a corresponding shape according to the application scenario, in this embodiment, the first shell 1 is a cuboid structure and is formed by plastic injection molding, thus having length, width and height. A floating cavity 11 is formed on the first shell 1 along the height direction and penetrates the first shell 1, and the floating shell 3 is mounted 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, and a first plug-in cavity 12 is also formed on the first shell 1, which penetrates the connecting surface 13 along the height direction, and the first conductive terminal 4 is plugged into the first plug-in cavity 12, wherein the height direction is defined as the plug-in direction, and the first conductive terminal 4 is inserted into the first plug-in cavity 12 along the plug-in direction.

[0040] 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 an avoidance 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 avoidance 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 being assembled in place, 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 avoidance cavity 142 along the direction of insertion.

[0041] 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, so as to limit the compensation shell 2 on the first shell 1.

[0042] 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 of the compensation shell 2 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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 the 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.

[0049] 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 includes 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, thereby affecting the elastic compensation effect of the first conductive terminal 4, and even causing short circuit and other adverse conditions due to the deformation of the first conductive terminal 4 that cannot be reset, thereby affecting the service life of the entire connector.

[0050] The first limiting part 51 includes 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 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.

[0051] 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.

[0052] 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 the same shape as 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, and the side edge of the second curved section 5222 away from the second flat section 5221 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 the torsional 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 surface 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 the unlocking state, at this time, the second curved section 5222 has a small gap with the stepped surface 16, the second free side 523 is located outside the first free side 512 in the insertion direction and is staggered with the first free side 512, the second flat section 5221 is inclined relative to the insertion direction at this time, and the movement of the floating shell 3 in the insertion direction at this time will not affect the movement. Therefore, when the second hook-shaped plate 522 is in the unlocking state, the torsional spring is in the normal state, and the second hook-shaped plate 522 in the unlocking state under the action of the torsional spring will not affect the installation of the floating shell 3 during the installation of the floating shell 3. Even if the first free side 512 and the second free side 523 overlap in the insertion direction during the 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 moves to the position where the second free side 523 is staggered with the first free side 512 and moves to the appropriate installation position. The cooperation between the first conductive terminal 4 and the second insertion cavity 34 can 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.

[0053] When the pressing trigger portion 53 is pressed, the trigger portion 53 will eventually be pressed against the second limiting surface 372, at which time the trigger portion 53 is entirely located in the accommodating 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 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.

[0054] 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 unlocked state with the pivot 521 as the center, the movement track 54 is arc-shaped, 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 unlocked state and the locked state.

[0055] The trigger part 53 is connected to the rotating shaft 521 so that the second hook plate 522 has a limited state and an unlocked state relative to the first hook plate 511. After rotating, the trigger part 53 extends into the receiving groove section 373 and then bends, with an arc end 531 at its end. The end of the arc end 531 bends towards the second insertion cavity 34. When the second hook plate 522 is in the unlocked state, the arc end 531 is located outside the floating housing 3 and within the movement range of the male connector in the insertion direction. When the male connector is inserted into the second insertion cavity 34, the trigger part 53 is pushed until it is held against the receiving groove section 373. The trigger part 53 then abuts against the second limiting surface 372, and the male connector is pressed against the arc end 531 of the trigger part 53. The second hook plate 522 is in the limited state when the arc end 531 is located in the receiving groove section 373. It should be noted that the first hook plate 511, the second hook plate 522, the rotating shaft 521, and the trigger part 53 are all made of plastic. An auxiliary rod (not shown in the figure) may be protruded from the rotating shaft 521 to facilitate manual rotation of the shaft 521 when the torsion spring fails. The auxiliary rod is located within the floating cavity 11 when the second hook plate 522 is in the locked state. Therefore, the torsion spring can be made of plastic to reduce its impact on the connector.

[0056] In another embodiment, the trigger part 53 is a bendable structure. When it is not necessary to restrict the floating housing 3, the curved end 531 can be bent outward so that the male connector cannot contact the curved end 531. The trigger part 53 can be connected by several iron wires, and the curved end 531 is a separate part connected by internal iron wires so that it can be bent by bending.

[0057] Please see Figures 1 to 3 , Figures 14 to 16 The male connector includes a second housing 6 having a third insertion cavity 64 and a second conductive terminal 7 inserted into the third insertion cavity 64.

[0058] The second housing 6 is rectangular in shape, with its length, width, and height corresponding one-to-one with the length, width, and height of the first housing 1. The second housing 6 has a head 61 and a plug-in portion 62, narrower than the head 61 and protruding from the head 61 along the insertion direction. The plug-in portion 62 is used to insert into the plug-in cavity 33. A mating cavity 63 is recessed on the plug-in portion 62 at a position corresponding to the center portion 36 to avoid the center portion 36 so that the center portion 36 is inserted therein, thereby improving the bonding force between the first housing 1 and the floating housing 3. Two welding tabs 65 are also inserted on the head 61 of the second housing 6. The welding tabs 65 have fourth protrusions on both sides along their width to abut against the inside of the second housing 6. The welding tabs 65 are used to weld to the circuit board to increase the connection strength between the second housing 6 and the circuit board and to hold the circuit board in place.

[0059] 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 portion 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 portion 62, and a part of the matching cavity segment 642 being located in the counter plug cavity 63.

[0060] The second conductive terminal 7 includes a third fastening portion 71 for being inserted into the third fastening cavity segment 641 and a matching portion 72 arranged along the matching cavity segment 642 for being penetrated 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 is continuously extended into the head 61 along the plug direction to form a fourth fastening cavity segment 643, and the end of the matching portion 72 of the second conductive terminal 7 is penetrated into the matching cavity segment 642. The third fastening portion 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 further has a second welding portion 73 connected to the third fastening portion 71, the second welding portion 73 being used for connecting with other connectors or cables or directly welded to a circuit board, thus the second welding portion 73 can be extended along the plug direction or along the width direction for welding.

[0061] 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.

[0062] 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, wherein the female connector includes a first housing, a floating housing, and a first conductive terminal; the first housing has a floating cavity and a first insertion cavity for the floating housing to move through; the floating housing has an insertion cavity and a second insertion cavity for the male connector to be inserted and removed along a insertion direction; the first conductive terminal is inserted into the first insertion cavity and the second insertion cavity; a floating space is formed between the floating housing and the floating cavity; characterized in that: The floating space is equipped with a compensation limiting structure for controlling the displacement compensation range of the floating shell; The compensation and 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 put the second limiting part in a limited state or an unlocked state relative to the first limiting part; when the second limiting part is in the limited state, a limited space is formed between the first limiting part and the second limiting part for the second limiting part to move with the floating shell within a limited range; A stepped surface is formed on the floating cavity; the first limiting part includes a first hook-shaped plate with one side fixedly connected to the stepped surface and the other side bent towards the floating shell to form a first free side, the first free side being spaced apart from the stepped surface to form an opening; an installation cavity communicating with the floating space is provided on the floating shell; the second limiting part includes a rotating shaft rotatably connected in the installation cavity and a second hook-shaped plate with one side fixedly connected to the rotating shaft and the other side bent towards the first limiting part to form a second free side, the trigger part being connected to the rotating shaft so that the second hook-shaped plate has 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, the second free side is located inside the first hook-shaped plate and cannot pass through the opening.

2. The small-pitch high-speed floating connector assembly as described in claim 1, characterized in that: The trajectory traversed by the second free side around the pivot when switching between the limited and unlocked states is configured as the movement trajectory, and both the first free side and the step surface are located outside the movement trajectory.

3. The small-pitch high-speed floating connector assembly as described in claim 1 or 2, characterized in that: The mounting cavity extends through the floating housing on the side opposite to the second insertion cavity along the insertion direction and has a receiving groove section; the trigger part has a curved end, which is located outside the floating housing when the second hook plate is in the unlocked state and holds it against the receiving groove section when the male connector is inserted into the second insertion cavity, and the second hook plate is in a limited state when the curved end is located in the receiving groove section.

4. The small-pitch high-speed floating connector assembly as described in claim 1, characterized in that: The second insertion cavity extends through the floating housing in the width direction to connect the floating space; the first conductive terminal includes a first soldering part for soldering to the circuit board, a first fastening part for inserting into the first insertion cavity, an elastic compensation part that moves through the floating space and the second insertion cavity, and a second fastening part for inserting into the second insertion cavity, wherein the second fastening part has a guide contact that extends into the insertion cavity to abut against the male connector.

5. The small-pitch high-speed floating connector assembly as described in claim 4, characterized in that: The first insertion cavity includes 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 insertion direction and is abutted against the first fastening cavity section by a first protrusion. The elastic compensation part includes a first segment extending along the inner wall of the first movable cavity section and spaced apart, a second segment extending along the inner wall of the floating cavity from the first segment and spaced apart, and a third segment extending toward the second insertion cavity from the second segment after being bent and spaced apart.

6. The small-pitch high-speed floating connector assembly as described in claim 4, characterized in that: The second insertion cavity includes two second fastening cavity sections that are opened along the insertion direction and are respectively located on both sides of the insertion cavity along the width direction, and a second movable cavity section that is narrower than the second fastening cavity sections and surrounds each of the second fastening cavity sections. The elastic compensation part is inserted into the second movable cavity section. The second fastening part includes two fastening sections that extend along the insertion direction and are arranged at intervals, and a connecting section connecting the two fastening sections. The section of each of the two fastening sections away from the connecting section is curved inward to form the guide contact. The elastic compensation part is connected to one of the guide contact sections, and both of the guide contact sections are pressed against the second fastening cavity section by a second protrusion.

7. The small-pitch high-speed floating connector assembly as described in claim 1, characterized in that: A compensation shell is provided on the outer wall of the first housing.

8. The small-pitch high-speed floating connector assembly as described in claim 1 or 6, characterized in that: The male connector includes a second housing with a third insertion cavity and a second conductive terminal inserted into the third insertion cavity. The second housing has an insertion portion for insertion into the insertion cavity. The third insertion cavity has a U-shaped mating cavity segment formed on the insertion portion and communicating outward in the width direction. The second conductive terminal has a mating segment arranged along the mating cavity segment.

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