Small-pitch high-speed floating male connector

Abstract

The utility model relates to electrical equipment field discloses a small interval high -speed floating male connector, including plastic shell and conducting terminal, the plastic shell is along one and inserts the direction and is equipped with the insertion cavity, and the conducting terminal includes the bending part of inserting in the insertion cavity along the insertion direction and the welding part of bending from the bending part, the plastic shell includes the plug -in part for the bending part and inserts the direction therein and the connecting part of being detachably connected with the plug -in part along the insertion direction and the restriction welding part, and the insertion cavity is formed together between the plug -in part and the connecting part, the utility model discloses the plug -in part and the connecting part of split type, make the conducting terminal be limited between the plug -in part and the connecting part while, the plastic shell is outwardly explicit and is convenient for with circuit board welding, at the same time, the insertion cavity and conducting terminal adaptation open and can limit the conducting terminal to the welding part can be integrally formed in advance and need not secondary processing bending.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment, and in particular to a small-pitch high-speed floating male connector. Background Technology

[0002] High-speed floating connectors are precision electronic components designed for transmitting high-speed signals in systems demanding high reliability and performance. Their core feature is the "floating" structure, which allows for minute axial and radial positional misalignments between the connector's plug and socket, automatically compensating for alignment errors caused by manufacturing tolerances, thermal expansion and contraction, or vibration and shock. This self-correcting capability effectively avoids installation stress, ensuring long-term connection stability. Furthermore, through meticulous impedance matching, shielding design, and differential signal transmission schemes, they can support high-speed data rates from several Gbps to tens of Gbps, perfectly combining high-reliability mechanical characteristics with excellent electrical performance. Therefore, high-speed floating connectors are widely used in communication base stations, data center servers, industrial equipment, and automotive electronics—fields with stringent requirements for signal integrity and connection durability.

[0003] To meet the growing demand for miniaturization and high-density integration of electronic products and to effectively save PCB space, small-pitch height floating connectors or small-pitch height floating connector assemblies are designed and manufactured. Small pitch refers to the extremely small center distance between connector terminals, typically less than 1 mm.

[0004] As a core component, the small-pitch, high-floating male connector mainly consists of a plastic housing and conductive terminals. After the conductive terminals are inserted into the housing, to ensure a proper fit between the conductive terminals and the plastic housing, a mating cavity is usually created on the plastic housing along the insertion direction of the conductor terminals. However, to improve the fit between the conductive terminals and the complementary connector, as well as with the plastic housing, the conductive terminals are bent to fit the sidewalls of the plastic housing, forming a bent portion. The ends of the conductive terminals are then bent to facilitate soldering to the circuit board. While this method is feasible, it requires bending the already formed conductive terminals, which severely affects their lifespan. Alternatively, a mating cavity can be directly created on the plastic housing to allow the entire conductive terminal to pass through along the insertion direction, but this affects the bonding force between the conductive terminals and the plastic housing, leading to unstable installation of the conductive terminals. Utility Model Content

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a small-pitch high-speed floating male connector to solve the problem of installing conductive terminals and plastic housing.

[0006] To solve the above-mentioned technical problems, the present invention provides a small-pitch high-speed floating male connector comprising a plastic housing and conductive terminals. The plastic housing has a mating cavity along an insertion direction. The conductive terminals include a bent portion inserted into the mating cavity along the insertion direction and a soldered portion bent from the bent portion. The plastic housing includes a pull-out portion for inserting the bent portion along the insertion direction and a connecting portion detachably connected to the pull-out portion along the insertion direction and restricting the soldered portion. The mating cavity is formed by the pull-out portion and the connecting portion together.

[0007] Furthermore, the insertion cavity includes a mating cavity segment formed on the insertion part for the bending part to be inserted therein along the insertion direction, a tight-fitting cavity segment connected along the insertion direction and enclosed by the insertion part and the connecting part, and a welding cavity segment connected to the tight-fitting cavity segment and for the welding part to be confined therein.

[0008] Furthermore, the insertion part includes a mating part and a head integrally connected to the mating part. The mating cavity is formed on the mating part and is open to the outside. The head is detachably connected to the connecting part to form the tight-fitting cavity between the head and the connecting part. The head has an inner circumferential surface, and the connecting part has an outer circumferential surface that forms the tight-fitting cavity when the head is connected to the connecting part.

[0009] Furthermore, the side of the interlocking portion facing away from the connecting portion along the insertion direction is the interlocking surface, and an interlocking cavity is formed in the interlocking portion that penetrates the interlocking surface; the interlocking portion has first side walls that are relatively distributed on both sides of the interlocking cavity, and each of the two first side walls is provided with a mating cavity segment, the mating cavity segment including a first cavity segment opened on the outer side wall of the interlocking portion along the insertion direction to connect to the inner side wall, a second cavity segment recessed in the mating surface along the insertion direction and connected to the first cavity segment, and a third cavity segment opened in the cavity wall of the interlocking cavity along the insertion direction and connected to the second cavity segment; the bending portion includes a first arm segment arranged along the insertion direction and used for insertion into the first cavity segment, a second arm segment bent from the first arm segment and used for insertion into the second cavity segment, and a third arm segment bent from the second arm segment and arranged along the insertion direction for insertion into the third cavity segment.

[0010] Furthermore, the bending portion also includes a fourth arm segment connected to the first arm segment and extending along the insertion direction, wherein the fourth arm segment has barbs protruding on both sides for abutting against the tight fitting cavity segment.

[0011] Furthermore, the connecting part has a through connecting part along the insertion direction and a mating cavity therein for the head to be inserted along the insertion direction; the mating cavity has two wide cavity surfaces that are relatively distributed, and the wide cavity surface has an inwardly facing peripheral groove that passes through the connecting part along the insertion direction, the groove surface in the peripheral groove is configured as the peripheral surface, and the inner perimeter surface is arranged corresponding to the two wide cavity surfaces; when the head is inserted into the mating cavity, the inner perimeter surface fits against the wide cavity surface and surrounds the peripheral surface to form the tight-fitting cavity section.

[0012] Furthermore, anti-mistake strips extending along the insertion direction are protruding on the two wide cavity surfaces, and the two anti-mistake strips are diagonally distributed. Anti-mistake grooves are recessed on the two inner circumference surfaces at positions corresponding to the two anti-mistake strips, allowing the anti-mistake strips to be inserted therein along the insertion direction.

[0013] Furthermore, the mating cavity has two relatively distributed narrow cavity surfaces, and each of the two narrow cavity surfaces is provided with an anti-retraction groove that communicates with the mating cavity inward; the head has two relatively distributed end surfaces corresponding to the two narrow cavity surfaces, and each of the end surfaces is provided with a locking block for engaging in the anti-retraction groove.

[0014] Furthermore, the card block has a guide surface and a mating surface for the card block to be inserted into the anti-reverse groove, and the anti-reverse groove has a limiting surface for abutting the mating surface.

[0015] Furthermore, slots are provided on both sides of the connecting part corresponding to the two end faces along the insertion direction, the two slots are respectively connected to the anti-reverse groove, and welding pull tabs are inserted into the two slots.

[0016] The small-pitch high-speed floating male connector of this utility model has at least the following beneficial effects: By splitting the plastic shell into a plug-in part and a connecting part, the conductive terminal is inserted into the plug-in part along the insertion direction. After the bent part of the conductive terminal is inserted into the plug-in part, the conductive terminal can be installed on the connecting part along the insertion direction. Thus, the conductive terminal is restricted between the plug-in part and the connecting part, while being exposed outside the plastic shell for easy soldering to the circuit board. At the same time, the plug cavity is adapted to the conductive terminal to restrict the conductive terminal, so that the soldering part can be integrally formed in advance without secondary processing and bending. 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 male connector of this utility model; Figure 2 This is a side sectional view of the male connector of this utility model; Figure 3This is an exploded view of the male connector of this utility model; Figure 4 for Figure 3 An enlarged view of part A shown; Figure 5 This is a schematic diagram of the structure of the plastic shell of this utility model; Figure 6 This is a half-sectional schematic diagram of the plastic shell of this utility model; Figure 7 for Figure 6 An enlarged view of part B shown; Figure 8 This is a schematic diagram of the structure of the conductive terminal of this utility model. The meanings of the labels in the attached diagram are as follows: Conductive terminal 1, bending part 1a, welding part 1b, first arm segment 11, second arm segment 12, third arm segment 13, fourth arm segment 14, barb 15, plastic shell 2, insertion part 21, mating part 21a, head 21b, mating surface 211, mating cavity 212, first side wall 213a, second side wall 213b, inner wall 214, locking block 215, rubber reduction groove 216, end face 217 218 Anti-fooling groove, 22 connecting part, 221 mating cavity, 2211 wide cavity surface, 2212 narrow cavity surface, 2213 anti-fooling strip, 2214 anti-reverse groove, 222 outer groove, 223 slot, 23 plug-in cavity, 231 mating cavity section, 2311 first cavity section, 2312 second cavity section, 2313 third cavity section, 232 tight-fitting cavity section, 233 welding cavity section, 24 welding pull tab, 241 limiting foot. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Please see Figures 1 to 8 The small-pitch high-speed floating male connector includes a conductive terminal 1 and a plastic housing 2 with a mating cavity 23, wherein the conductive terminal 1 is inserted into the mating cavity 23.

[0020] Please see Figures 1 to 4 as well as Figure 8 The conductive terminal 1 is made of a conductive metal such as copper and is used for transmitting electrical signals. In this embodiment, the conductive terminal 1 includes a bent portion 1a inserted into the insertion cavity 23 along the insertion direction and a welded portion 1b bent from the bent portion 1a. The bent portion 1a is used to combine with the plastic housing 2. The plastic housing 2 supports, positions and protects the bent portion 1a. At the same time, the bent portion 1a is inserted into the complementary connection portion 22 on the outside of the plastic housing 2. When the complementary connection portion 22 is inserted into this utility model, the bent portion 1a contacts the complementary terminal of the complementary connection portion 22 to realize the conduction of electrical signals.

[0021] The bending portion 1a includes a first arm segment 11 arranged along the insertion direction, a second arm segment 12 extending parallel to the width direction of the plastic shell 2 after bending from the first arm segment 11, a third arm segment 13 extending along the insertion direction towards the same side as the first arm segment 11 after bending from the second arm segment 12, and a fourth arm segment 14 connected to the first arm segment 11 and extending along the insertion direction away from the second arm segment 12. All arm segments are integrally connected and can be formed by stamping or molding, thus making the bending portion 1a U-shaped. To improve the bonding force and firmness between the bending portion 1a and the plastic shell 2, barbs 15 are protruding on both sides of the width of the fourth arm segment 14. The width of the barbs 15 is slightly larger than the width of the cavity in the plastic shell 2 into which the fourth arm segment 14 passes, so that the fourth arm segment 14 presses against the plastic shell 2 after being extruded into it, achieving a tight fit between the fourth arm segment 14 and the plastic shell 2. The welding part 1b is bent from the end of the fourth arm segment 14 away from the third arm segment 13 and extends parallel to the second arm segment 12 toward the side away from the first arm segment 11. After the conductive terminal 1 is inserted into the plastic housing 2, the welding part 1b is supported on the plastic housing 2 and can restrict the continued insertion of the conductive terminal 1 in the insertion direction. At the same time, the plastic housing 2 exposes the welding part 1b outside the plastic housing 2, which facilitates welding with the circuit board.

[0022] Please see Figures 1 to 7 The plastic housing 2 is formed by plastic injection molding and is rectangular in shape with length, width, and height. The height direction of the plastic housing 2 is defined as the insertion direction, and the insertion cavity 23 is formed along the insertion direction so that the conductive terminal 1 is mounted on the plastic housing 2 along the insertion direction. The plastic housing 2 includes a pull-out portion 21 into which the bending portion 1a is inserted along the insertion direction, and a connecting portion 22 detachably connected to the pull-out portion 21 along the insertion direction and restricting the welding portion 1b. The bending portion 1a of the conductive terminal 1 is inserted into the pull-out portion 21, while the welding portion 1b is supported and restricted on the connecting portion 22. This allows the conductive terminal 1 to be connected to the connecting portion 22 along the insertion direction with the pull-out portion 21, without being affected by the welding portion 1b, ensuring the integrity of the conductive terminal 1 and eliminating the need for secondary bending that would affect its service life. The insertion part 21 and the connecting part 22 together form a insertion cavity 23 so that the conductive terminal 1 can be installed on the split plastic housing 2; the insertion part 21 is used to insert into the complementary connector.

[0023] The insertion / removal part 21 includes a mating part 21a and a head 21b integrally connected to the mating part 21a. The mating part 21a and the head 21b are sequentially connected along the insertion direction. The mating part 21a is used for mating with the complementary connector, and the head 21b is used for detachable connection with the connecting part 22. Both the mating part 21a and the head 21b are generally rectangular. Relative to the head 21b, the side of the mating part 21a facing away from the head 21b along the insertion direction is defined as the mating surface 211. In order to increase the bonding force between the mating part 21a and the complementary connector, a mating cavity 212 is recessed on the mating part 21a to avoid the corresponding internal structure of the complementary connector so that the corresponding structure of the complementary connector can be mated therein. The mating cavity 212 makes the interior of the mating part 21a hollow and passes through the mating surface 211, thereby improving the bonding force between the complementary connector and the insertion / removal part 21. The insertion cavity 212 is rectangular, resulting in the insertion portion 21a having two first side walls 213a relatively distributed on both sides of the insertion cavity 212 and two second side walls 213b relatively distributed on the other two sides of the insertion cavity 212. The first side walls 213a and the second side walls 213b together form a square frame structure. The two first side walls 213a are parallel and spaced apart along the width direction of the insertion portion 21a, and the two second side walls 213b are parallel and spaced apart along the length direction of the insertion portion 21a.

[0024] In this embodiment, mating cavities 231 are recessed along the inner and outer sides of the two first side walls 213a. Specifically, the mating cavity 231 includes a first cavity 2311 formed on the outer wall of the insertion portion 21a along the insertion direction, a second cavity 2312 recessed in the mating surface along the insertion direction and communicating with the first cavity 2311, and a third cavity 2313 formed in the wall of the insertion cavity 212 along the insertion direction and communicating with the second cavity 2312, thereby making the mating cavity 231 generally U-shaped. The first cavity 2311 is open outward in the width direction, the second cavity 2312 penetrates the mating surface along the insertion direction, and the third cavity 2313 is open inward in the width direction. Among them, multiple mating cavities 231 are equally spaced along the length direction, and the distance between any two adjacent mating cavities 231 is within 1mm. In particular, in this embodiment, the distance between two adjacent mating cavities 231 can be 0.4mm, achieving an ultra-small distance. The conductive terminal 1 is matched with it, and after assembly, the distance between two adjacent conductive terminals 1 is about 0.4mm, achieving high-density integration and miniaturization.

[0025] The head 21b extends integrally from the interlocking portion 21a along the insertion direction towards the side opposite to the interlocking surface 211. On the head 21b, the opposite sides corresponding to the two first side walls 213a are configured as inner walls 214, and on the head 21b, the opposite sides corresponding to the two second side walls 213b are configured as end faces 217. The first cavity segment 2311 connects to the inner wall surface 214 and is flush with the inner wall surface 214 on its inward side, so that both sides of the interlocking portion 21a protrude slightly from the inner wall surface 214 along the width direction. A locking block 215 protrudes from each end face 217. The locking block 215 is a right-angled triangle (i.e., a triangular prism). One right-angled surface of the locking block 215 forms a mating surface along the insertion direction away from the interlocking portion 21a, and the inclined surface of the locking block 215 forms a guide surface facing away from the end face 217, so that the locking block 215 can be used to abut against the connecting portion 22. To make it easier for the card block 215 to be inserted into the connecting part 22, a reducing groove 216 is recessed on the side of the head 21b facing away from the insertion part 21a along the insertion direction, close to the card block 215, so that the position where the card block 215 is located is thinned by the reducing groove 216. At the same time, the reducing groove 216 provides a certain deformation space for the position where the card block 215 is located.

[0026] The connecting part 22 has a cuboid structure. A mating cavity 221 is provided on the connecting part 22 along the insertion direction, which is adapted to the shape and size of the head 21b so that the head 21b can be inserted into the mating cavity 221 along the insertion direction. Therefore, the mating cavity 221 is usually cuboid in shape and has two wide cavity surfaces 2211 and two narrow cavity surfaces 2212 that are relatively distributed. The two wide cavity surfaces 2211 correspond to the two inner circumferential surfaces 214 and are distributed on both sides of the width of the mating cavity 221, and the two narrow cavity surfaces 2212 correspond to the two end surfaces 217 and are distributed on both sides of the length of the mating cavity 221. The wide cavity surface 2211 is recessed with an inwardly facing outer groove 222 that extends through the connecting part 22 in the insertion direction. The outer groove 222 is rectangular in shape, and the groove surface in each outer groove 222 is configured as an outer surface. The outer surface is aligned with the first cavity section 2311 of each tight-fitting cavity section 232. When the head 21b is inserted into the mating cavity 221 and connected to the connecting part 22, the wide cavity surface 2211 is close to the outer periphery of the inner periphery surface 214, so that the inner periphery surface 214 and the outer surface of the outer groove 222 together form the tight-fitting cavity section 232. The distance between the two wide cavity surfaces 2211 should be adapted to the width of the insertion part 21a so that it can pass through. Therefore, after the head 21b is connected to the connecting part 22, the wide cavity surface 2211 will be slightly spaced from the inner periphery surface 214. This allows the conductive terminal 1, after being installed on the insertion part 21 along the insertion direction, to pass through the mating cavity 221 along the insertion direction, so that the plastic housing 2 does not need to be provided with an additional cavity for the welding part 1b to pass through, thus ensuring the stability between the plastic housing 2 and the conductive terminal 1.

[0027] To improve the stability between the head 21b and the connecting part 22, anti-misalignment strips 2213 (anti-misalignment refers to preventing rotation and error) extending along the insertion direction are provided on both wide cavity surfaces 2211. The anti-misalignment strips 2213 are arranged to protrude along the width direction, and the two anti-misalignment strips 2213 are diagonally distributed, with one located at one end of the wide cavity surface 2211 along the length direction and the other located at the other end of the other wide cavity surface 2211 along the direction. Anti-misalignment grooves 218 are recessed on the two inner circumferential surfaces 214 at the positions corresponding to the positions of the two anti-misalignment strips 2213, in which the anti-misalignment strips 2213 are inserted along the insertion direction. The anti-misalignment grooves 218 are open outward and extend along the insertion direction through the side of the head 21b away from the connecting part 21a.

[0028] To restrict the head 21b after the connecting part 22 and the head 21b are installed, anti-retraction grooves 2214 are provided on both narrow cavity surfaces 2212, which are internally connected to the mating cavity 221. When the head 21b is inserted into the mating cavity 221, the anti-retraction grooves 2214 are aligned with the locking block 215 and allow the locking block 215 to be engaged in them. The anti-retraction grooves 2214 have a limiting surface that blocks the mating surface along the insertion direction away from the interlocking part 21a when the locking block 215 is engaged in it.

[0029] To increase the connection strength between the connector 22 and the circuit board, two solder tabs 24 are inserted into the connector 22. Each of the connector 22 has slots 223 extending through it along the insertion direction on both sides near the two end faces 217. Each slot 223 includes a wide section and a narrow section narrower than the wide section but connected to it. The solder tab 24 passes through the narrow section and has a limiting foot 241 at its end that is inserted into the wide section. The end of the solder tab 24 away from the limiting foot 241 is bent and extends longitudinally. The side of the connector 22 facing away from the insertion part 21a along the insertion direction is defined as the soldering surface. The narrow section extends through the soldering surface, and the bent end of the solder tab 24 is located outside the soldering surface for soldering to the circuit board, thereby holding the circuit board in place. In order to make it easier for the locking block 215 to be inserted into the anti-retraction groove 2214, both anti-retraction grooves 2214 are directly opposite the slots 223 and the two slots 223 are respectively connected to the anti-retraction grooves 2214, so that the narrow cavity surface 2212 has a certain deformation capability by thinning the connecting part 22 where the narrow cavity surface 2212 is located. On the welding surface, welding cavity sections 233 are recessed on both sides corresponding to the outer surface along the width. The welding cavity section 233 penetrates the welding surface along the insertion direction and its inward end is connected to the outer groove 222. Therefore, in this utility model, the insertion cavity 23 is composed of a mating cavity section 231 formed on the insertion part 21 for the bending part 1a to be inserted in the insertion direction, a tight-fitting cavity section 232 connected to the mating cavity section 231 along the insertion direction and surrounded by the insertion part 21 and the connecting part 22, and a welding cavity section 233 connected to the tight-fitting cavity section 232 and for the welding part 1b to be confined therein.

[0030] One embodiment of the small-pitch high-speed floating male connector of this utility model operates as follows: After separating the insertion part 21 and the connecting part 22, the bent part 1a of the conductive terminal 1 is inserted into the mating cavity 231, that is, the first arm segment 11 is inserted into the first cavity 2311, the second arm segment 12 is inserted into the second cavity 2312, and the third arm segment 13 is inserted into the third cavity 2313, wherein the fourth arm segment 14 is attached to the inner circumference surface 214, and the welding part 1b extends outward. After all conductive terminals 1 are inserted into the mating cavity 231, the insertion part 21 is inserted through the mating cavity 221 from the welding surface side of the connecting part 22 along the insertion direction until the locking block 215 is inserted into the locking slot, and the outer surface and the inner surface 214 form a tight-fitting cavity 232. The barbs 15 on the fourth arm 14 are pressed against the outer surface, and the welding part 1b is located in the welding cavity 233, thereby completing the installation of the plastic shell 2 and the conductive terminals 1. After that, the welding pull tab 24 and the welding part 1b are welded to the circuit board.

Claims

1. A small-pitch high-speed floating male connector, comprising a plastic housing and conductive terminals, wherein the plastic housing has a mating cavity along an insertion direction, and the conductive terminals include a bent portion inserted into the mating cavity along the insertion direction and a soldered portion bent from the bent portion; characterized in that: The plastic housing includes a plug-in portion into which a bending portion is inserted along the insertion direction, and a connecting portion that is detachably connected to the plug-in portion along the insertion direction and restricts the welding portion, and the plug-in portion and the connecting portion together enclose the insertion cavity.

2. The small-pitch high-speed floating male connector as described in claim 1, characterized in that: The insertion cavity includes a mating cavity segment formed on the insertion part for the bending part to be inserted therein along the insertion direction, a tight-fitting cavity segment connected along the insertion direction and enclosed by the insertion part and the connecting part, and a welding cavity segment connected to the tight-fitting cavity segment and for the welding part to be confined therein.

3. The small-pitch high-speed floating male connector as described in claim 2, characterized in that: The insertion / extraction part includes a insertion part and a head integrally connected to the insertion part. The mating cavity is formed on the insertion part and is open to the outside. The head is detachably connected to the connecting part to form the mating cavity between the head and the connecting part. The head has an inner surface, and the connecting part has an outer surface that forms the mating cavity by surrounding the inner surface when the head is connected to the connecting part.

4. The small-pitch high-speed floating male connector as described in claim 3, characterized in that: The side of the interlocking portion facing away from the connecting portion along the insertion direction is the interlocking surface, and an interlocking cavity is formed in the interlocking portion that penetrates the interlocking surface; the interlocking portion has first side walls that are relatively distributed on both sides of the interlocking cavity, and each of the two first side walls is provided with a mating cavity segment. The mating cavity segment includes a first cavity segment opened on the outer side wall of the interlocking portion along the insertion direction to connect to the inner side wall, a second cavity segment recessed in the mating surface along the insertion direction and connected to the first cavity segment, and a third cavity segment opened in the cavity wall of the interlocking cavity along the insertion direction and connected to the second cavity segment; the bending portion includes a first arm segment arranged along the insertion direction and used for insertion into the first cavity segment, a second arm segment bent from the first arm segment and used for insertion into the second cavity segment, and a third arm segment bent from the second arm segment and arranged along the insertion direction for insertion into the third cavity segment.

5. The small-pitch high-speed floating male connector as described in claim 4, characterized in that: The bending portion also includes a fourth arm segment connected to the first arm segment and extending along the insertion direction, wherein the fourth arm segment has barbs protruding on both sides for abutting against the tight fitting cavity segment.

6. The small-pitch high-speed floating male connector as described in claim 3, characterized in that: The connecting part has a through connecting part along the insertion direction and a mating cavity in which the head is inserted along the insertion direction; the mating cavity has two wide cavity surfaces that are relatively distributed, and the wide cavity surface has an inwardly facing peripheral groove that passes through the connecting part along the insertion direction. The groove surface in the peripheral groove is configured as the peripheral surface, and the inner peripheral surface is arranged corresponding to the two wide cavity surfaces; when the head is inserted into the mating cavity, the inner peripheral surface fits against the wide cavity surface and surrounds the peripheral surface to form the tight-fitting cavity section.

7. The small-pitch high-speed floating male connector as described in claim 6, characterized in that: The two wide cavity surfaces are provided with anti-misalignment strips extending along the insertion direction. The two anti-misalignment strips are diagonally distributed. The inner circumference surfaces are provided with anti-misalignment grooves corresponding to the positions of the two anti-misalignment strips, in which the anti-misalignment strips are inserted along the insertion direction.

8. The small-pitch high-speed floating male connector as described in claim 6, characterized in that: The mating cavity has two relatively distributed narrow cavity surfaces, and each of the two narrow cavity surfaces is provided with an anti-retraction groove that communicates with the mating cavity inward; the head has two relatively distributed end surfaces corresponding to the two narrow cavity surfaces, and each of the end surfaces is provided with a locking block for engaging in the anti-retraction groove.

9. The small-pitch high-speed floating male connector as described in claim 8, characterized in that: The card block has a guide surface and a mating surface for the card block to be inserted into the anti-reverse groove, and the anti-reverse groove has a limiting surface for abutting the mating surface.

10. The small-pitch high-speed floating male connector as described in claim 8, characterized in that: The connecting part has slots on both sides corresponding to the two end faces along the insertion direction. The two slots are respectively connected to the anti-reverse groove, and welding pull tabs are inserted into the two slots.

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