Referring to FIG. 4A, FIG. 4B and FIG. 5, the female electrical connector 4 of the present embodiment includes an insulative fixing seat 41, an insulative floating seat 42, a floating terminal 43 and a conductive shell 44. The floating terminal 43 is received in the insulative fixing seat 41 and the insulative floating seat 42, and the insulative fixing seat 41, the insulative floating seat 42 and the floating terminal 43 together are received in the conductive shell 44. The insulative fixing seat 41 and the insulative floating seat 42 are interposed between the floating terminal 43 and the conductive shell 44 to make the floating terminal 43 and the conductive shell 44 insulated from each other.

Referring to FIG. 6 and FIG. 7, the insulative fixing seat 41 includes a main fixing seat 411 and an auxiliary fixing seat 412.

The insulative fixing seat 41 has a terminal receiving groove 41a, the terminal receiving groove 41a is opened to a side of the insulative fixing seat 41 and extends into the insulative fixing seat 41. The terminal receiving groove 41a is used to receive the floating terminal 43. Specifically, in the present embodiment, the terminal receiving groove 41a partitions an inner wall of the main fixing seat 411 into a first position-limiting wall 413 and a second position-limiting wall 414 which face each other.

The terminal receiving groove 41a forms a lateral opening on a side surface of the main fixing seat 411, the auxiliary fixing seat 412 is snapped to the lateral opening so as to close the lateral opening. The first position-limiting wall 413 and the second position-limiting wall 414 are respectively provided thereon with snapping grooves 4112. The auxiliary fixing seat 412 is provided thereon with snapping blocks 4122 which snap with the snapping grooves 4112 respectively. The main fixing seat 411 and the auxiliary fixing seat 412 are connected with each other by that the snapping blocks 4122 and the snapping grooves 4112 snap with each other. The floating terminal 43 is mounted in the terminal receiving groove 41a via the lateral opening of the main fixing seat 411, the auxiliary fixing seat 412 is snapped to the lateral opening, so as to package the floating terminal 43 in the terminal receiving groove 41a. The auxiliary fixing seat 412 is provided thereon with a spacing block 4121 which protrudes, the spacing block 4121 extends into the terminal receiving groove 41a to perform position-limiting on the floating terminal 43 in the terminal receiving groove 41a.

A bottom portion of the terminal receiving groove 41a has a terminal fixing groove 41b which extends horizontally. Specifically, in the present embodiment, the first position-limiting wall 413 and the second position-limiting wall 414 are respectively opened with a first inserting groove 4131 and a second inserting groove 4141 respectively at a position which is close to a bottom end of the first position-limiting wall 413 and a position which is close to a bottom end of the second position-limiting wall 414, an opening of the first inserting groove 4131 and an opening of the second inserting groove 4141 face each other, and the first inserting groove 4131 and the second inserting groove 4141 together constitute the terminal fixing groove 41b. The terminal fixing groove 41b is used to fix the floating terminal 43.

The first position-limiting wall 413 of the main fixing seat 411 is provided thereon with a stopping wall 4111 which protrudes, the stopping wall 4111 is used to constitute position-limiting on the floating terminal 43 (described in detail below), an outer side surface of the insulative fixing seat 41 is further provided with at least one recessed groove 4113 which is used to fix the conductive shell 44.

Referring to FIG. 8, the insulative floating seat 42 is floatingly mounted above the insulative fixing seat 41. Specifically, in the present embodiment, a top portion of the insulative fixing seat 41 has a supporting platform 410 which is horizontal, the insulative floating seat 42 slidably seats on the supporting platform 410, which thus realizes horizontal floating of the insulative floating seat 42, and there is not connecting constraint between the insulative floating seat 42 and the insulative fixing seat 41 up and down, so the insulative floating seat 42 may freely float up and down relative to the insulative fixing seat 41. But a floating extent of the insulative floating seat 42 is limited by the conductive shell 44 which sheathes the insulative fixing seat 41 and the insulative floating seat 42 (described in detail below). Moreover, in other embodiments not shown, the insulative fixing seat 41 may be provided thereon with a receiving groove, the insulative floating seat 42 is mounted in the receiving groove, the insulative floating seat 42 and the receiving groove have a gap therebetween to make the insulative floating seat 42 capable of floating along a horizontal direction and the up-down direction relative to the insulative fixing seat 41. Or, in other embodiment, it also may be that the insulative floating seat 42 is provided thereon with a receiving groove or a penetrating hole to make the insulative fixing seat 41 partially extend into the receiving groove or the penetrating hole of the insulative floating seat 42 and make the insulative fixing seat 41 and the receiving groove or the penetrating hole of the insulative floating seat 42 have a gap therebetween, which thus realize that the insulative floating seat 42 may freely float horizontally and up and down relative to the insulative fixing seat 41.

The insulative floating seat 42 has an insertion hole 421 which penetrates up and down, a lower portion of the floating terminal 43 is fixed in the insulative fixing seat 41, an upper portion of the floating terminal 43 extends into the insertion hole 421 of the insulative floating seat 42. The insulative floating seat 42 is provided with an annular groove 422 which is positioned at an upper portion of the insulative floating seat 42 and encircles around an outer wall of the upper portion of the insulative floating seat 42. The insulative floating seat 42 includes a barrel body 423 which is barrel-shaped. The insertion hole 421 penetrates the barrel body 423 up and down. Specifically, the annular groove 422 encircles the barrel body 423 and is positioned at a position of the barrel body 423 close to an upper end of the barrel body 423. A protruding ring 424 protruding outwardly is formed on an outer wall of the barrel body 423 adjacent to below the annular groove 422.

Referring to FIG. 9, the floating terminal 43 preferably is a metal conductive material having elasticity, includes a mating portion 431, a float connecting portion 433, a horizontal fixing portion 434 and a soldering tail portion 432 which are sequentially connected together. Here, the mating portion 431 and the soldering tail portion 432 are respectively positioned at two ends of the floating terminal 43, the float connecting portion 433 is connected between the mating portion 431 and the horizontal fixing portion 434, the horizontal fixing portion 434 is connected between the float connecting portion 433 and the soldering tail portion 432. The mating portion 431 is used to mate with the central conductive member 21 of the male connector 2, the soldering tail portion 432 is used to be soldered with the circuit board 1 so as to make the floating terminal 43 and the circuit board 1 electrically conducted. The float connecting portion 433 is used to make the floating terminal 43 realize floating up and down, left and right and front and rear, in turn make the floating terminal 43 realize floatingly mating with the male connector 2, the horizontal fixing portion 434 is used to fix a lower end of the floating terminal 43 on the insulative fixing seat 41.

Referring to FIG. 6 to FIG. 9, the mating portion 431 extends into the insertion hole 421 of the insulative floating seat 42, the float connecting portion 433 and the horizontal fixing portion 434 are received in the insulative fixing seat 41. Here, the float connecting portion 433 is received in the terminal receiving groove 41a, and the float connecting portion 433 and a groove wall of the terminal receiving groove 41a have a gap therebetween, so as to make the float connecting portion 433 capable of floating in the terminal receiving groove 41a. The horizontal fixing portion 434 is correspondingly received in the terminal fixing groove 41b, the soldering tail portion 432 is exposed outside the insulative fixing seat 41.

The horizontal fixing portion 434 extends horizontally just below the mating portion 431, the horizontal fixing portion 434 is received in the terminal fixing groove 41b, a thickness of the horizontal fixing portion 434 is matched with a height of the terminal fixing groove 41b, so as to assure that the horizontal fixing portion 434 tightly attaches with a groove wall of the terminal fixing groove 41b. Specifically, in the present embodiment, heights of the first inserting groove 4131 and the second inserting groove 4141 which constitute the terminal fixing groove 41b are matched with the thickness of the horizontal fixing portion 434, so as to make two sides of the horizontal fixing portion 434 respectively snapped in the first inserting groove 4131 and the second inserting groove 4141.

Meanwhile referring to FIG. 9, the soldering tail portion 432 is connected to a tip of the horizontal fixing portion 434, the soldering tail portion 432 and the horizontal fixing portion 434 are connected with a step portion 4321 therebetween.

Referring to FIG. 9, FIG. 10 and FIG. 11, the mating portion 431 of the floating terminal 43 includes two mating elastic pieces 4313 which face each other, the two mating elastic pieces 4313 form slits therebetween. Corresponding sides of lower portions of the two mating elastic pieces 4313 are connected with each other, upper portions of the two mating elastic pieces 4313 are separated from each other and therebetween form an inserting cavity 4318 which penetrates up and down. The inserting cavity 4318 is used to allow the central conductive member 21 of the male connector 2 to insert therein and make the central conductive member 21 of the male connector 2 and the mating portion 431 of the floating terminal 43 establish electrical connection. Horizontal cross sections of the two mating elastic piece 4313 are arcs which curve toward each other so that the two mating elastic pieces 4313 have centripetal forces which gather toward a center of the inserting cavity 4318, to ensure that a necking portion 4315 and the central conductive member 21 always maintain reliable contact therebetween. The two mating elastic pieces 4313 gather toward the center of the inserting cavity 4318 at positions of the two mating elastic pieces 431 close to upper ends of the two mating elastic pieces 431 to form the necking portion 4315 which is used to contact the central conductive member 21.

Specifically, the mating portion 431 of the floating terminal 43 has a first slit 4311 and a second slit 4312. The first slit 4311 extends from an upper end of an inserting guide portion 4314 all the way to a straight barrel portion 4317 and cuts through the straight barrel portion 4317. The second slit 4312 extends from the upper end of the inserting guide portion 4314 all the way to the straight barrel portion 4317 but does not cut through the straight barrel portion 4317. The float connecting portion 433 is connected to a lower end of the straight barrel portion 4317 and is positioned just below the second slit 4312.

The mating portion 431 entirely is a necking bottle shape. The mating portion 431 sequentially from down to up includes the straight barrel portion 4317, a cone barrel portion 4316, the necking portion 4315 and the inserting guide portion 4314. The straight barrel portion 4317 is a barrel-shaped structure which a caliber thereof is consistent up and down and which is incompletely closed, the cone barrel portion 4316 is formed by making a caliber of the cone barrel portion 4316 tapered upwardly from the straight barrel portion 4317, the inserting guide portion 4314 is formed by a caliber of the inserting guide portion 4314 slightly expanded upwardly from the cone barrel portion 4316, the necking portion 4315 is formed at a boundary position between the cone barrel portion 4316 and the inserting guide portion 4314.

In combination with referring to FIG. 3 and FIG. 9 and FIG. 14, the inserting guide portion 4314 is substantially horn-shaped, and provides mate guiding for that the central conductive member 21 of the male connector 2 smoothly extends into the inserting cavity 4318 of the mating portion 431. When the central conductive member 21 extends into the inserting cavity 4318, the necking portion 4315 embracingly contacts an outer periphery of the central conductive member 21, the necking portion 4315 and the central conductive member 21 form two contacting bands which are arc lines in shape, a contact area between the female connector 4 and the central conductive member 21 is effectively promoted, so that the female connector 4 and the central conductive member 21 also can maintain reliable contact under a vibrating circumstance to establish a first electrical connection to transmission a signal. The metal shell 22 of the male connector 2 sheathes an outer periphery of the conductive shell 44 of the female connector 4, an elastic mating piece 442 of the conductive shell 44 elastically abuts against an inner wall of the metal shell 22 to establish a second electrical connection to provide grounding.

Referring to FIG. 9 to FIG. 11, the float connecting portion 433 is elastically connected between the mating portion 431 and the horizontal fixing portion 434. The float connecting portion 433 is formed by bending multiple times, so the float connecting portion 433 may be deformed in various directions in a three-dimensional space, so that floating of the floating terminal 43 in each direction of a left-right direction, a front-rear direction and the up-down direction may be realized.

For the sake of convenient description, the left-right direction, the front-rear direction and the up-down direction are respectively defined as an X axis direction, a Y axis direction and a Z axis direction.

The present embodiment acts as an implementing manner of the float connecting portion 433, includes three straight extending portions which sequentially bend and extend, any two straight extending portions of the three straight extending portions are perpendicular to each other. That is, the three straight extending portions respectively extend along the X axis direction, the Y axis direction and the Z axis direction of the three-dimensional space, and the three straight extending portions realize turning by respective bending portions.

Specifically, the float connecting portion 433 includes a first bending portion 4331, a first straight extending portion 4332, a second bending portion 4333, a second straight extending portion 4334, a third bending portion 4335, a third straight extending portion 4336 and a fourth bending portion 4337 which are sequentially connected.

The first bending portion 4331 is formed by bending from of a lower end of the mating portion 431 toward the X axis direction by 90 degrees, the first straight extending portion 4332 is connected with the first bending portion 4331 and is formed by extending horizontally from a horizontal tip of the first bending portion 4331 toward the X axis direction, the second bending portion 4333 is formed by bending from the first straight extending portion 4332 toward the Z axis direction by 90 degrees, the second straight extending portion 4334 is connected with the second bending portion 4333 and is formed by vertically extending downwardly from a lower end of the second bending portion 4333 toward the Z axis direction, the third bending portion 4335 is formed by bending from the second straight extending portion 4334 along a horizontal direction by 90 degrees, the third straight extending portion 4336 is connected with the third bending portion 4335 and is formed by extending vertically from the third bending portion 4335 toward a direction perpendicular to the second straight extending portion 4334, the fourth bending portion 4337 is formed by bending from the third straight extending portion 4336 toward the Y axis direction by 90 degrees, the horizontal fixing portion 434 is connected with the fourth bending portion 4337 and is formed by extending from a horizontal tip of the fourth bending portion 4337 toward the Y axis direction (a horizontal direction).

The three straight extending portions and the four bending portions of the float connecting portion 433 form flexible connections therebetween, so that the float connecting portion 433 and the mating portion 431 are capable of floating relative to each other and the float connecting portion 433 and the horizontal fixing portion 434 are capable of floating relative to each other, and the three straight extending portions of the float connecting portion 433 which respectively extend toward various directions of the three-dimensional space also are capable of floating relative to each other, so that the floating terminal 43 floats in the various directions in the three-dimensional space is realized.

Referring to FIG. 13A to FIG. 14, the float connecting portion 433 is received in the terminal receiving groove 41a of the main fixing seat 411, the terminal receiving groove 41a and the float connecting portion 433 have a gap therebetween, so as to make the float connecting portion 433 has a floating space.

The terminal receiving groove 41a has spacing members which extend into between various portions of the float connecting portion 433. The spacing member is capable of functioning as limiting of elastic deformation of the respective portion of the float connecting portion 433, avoiding the floating extent of the floating terminal 43 in the terminal receiving groove 41a being too large to affect mating stability between the floating terminal 43 and the male connector 2.

Referring to FIG. 11, specifically, in the present embodiment, two opposite sides of the first straight extending portion 4332 each have a bending arm 4338 which extends downwardly, the bending arm 4338 has a free end which is suspended. The two bending arms 4338 which face each other may promote a capacitive reactance of the floating terminal 43 so as to realize impedance matching, further may cooperate with the auxiliary fixing seat 412 to realize function of auxiliary fixing.

Again referring to FIG. 7 and FIG. 13B, the auxiliary fixing seat 412 is provided with the spacing block 4121. The spacing block 4121 is interposed between the bending arm 4338 of the floating terminal 43 and the horizontal fixing portion 434 of the floating terminal 43 to realize auxiliary fixing of the floating terminal 43, at the same time, the spacing block 4121 also is capable of functioning as position-limiting on the elastic deformation of the floating terminal 43 by a certain extent, avoiding the floating terminal 43 floating excessively to affect mating stability between the floating terminal 43 and the male connector 2.

Again referring to FIG. 6, the first position-limiting wall 413 of the main fixing seat 411 is further provided with the stopping wall 4111 which protrudes. The stopping wall 4111 stops below the first bending portion 4331 of the floating terminal 43 to limit excessive floating of the first bending portion 4331.

Referring to FIG. 12, FIGS. 13A and 13B, the conductive shell 44 is a conductive material, and sheathes the insulative fixing seat 41 and the insulative floating seat 42. The conductive shell 44 includes a sleeve portion 441 which is an annular shape and a plurality of elastic mating pieces 442 which extend upwardly from the sleeve portion 441. The sleeve portion 441 sheathes the insulative fixing seat 41, a lower end of the sleeve portion 441 is provided with a plurality of soldering legs 444 which extend outwardly. The soldering leg 444 is used to fix the conductive shell 44 and the circuit board 1 by soldering.

The sleeve portion 441 is provided with at least one latch 445 which protrudes inwardly, when the conductive shell 44 sheathes the insulative fixing seat 41, the latch 445 of the sleeve portion 441 may extend into the recessed groove 4113 (as shown in FIG. 7) of the insulative fixing seat 41 by stamping, so as to realize relative fixing between the sleeve portion 441 and the insulative fixing seat 41.

A tip of each elastic mating piece 442 extends into and is received in the annular groove 422 of the insulative floating seat 42. Specifically, the plurality of elastic mating pieces 442 are distributed to be spaced apart from each other around along an upper end of the sleeve portion 441 and form a cage shape. An upper end of the elastic mating piece 442 bends toward a central axis of the conductive shell 44 to form a bending hook 443. The bending hook 443 is suspended and latches with the protruding ring 424 of the insulative floating seat 42, a tip of the bending hook 443 extends into the annular groove 422 and has a gap with the annular groove 422, so as to prevent the insulative floating seat 42 from being detached from the insulative fixing seat 41 and permit the insulative floating seat 42 to float in a horizontal direction and the up-down direction by a narrow extent. The protruding ring 424 is capable of functioning as position-limiting on the bending hook 443 to avoid the bending hook 443 being detached from the annular groove 422.

Because the elastic mating piece 442 has elasticity, the elastic mating piece 442 may be appropriately deformed so that the insulative floating seat 42 may float relative to the insulative fixing seat 41, and in a floating process of the insulative floating seat 42, the elastic mating piece 442 also can appropriately constrain the insulative floating seat 42 to ensure that the insulative floating seat 42 is not detached from the insulative fixing seat 41.

Referring to FIG. 3 and FIG. 14 for comparison, FIG. 3 is a cross sectional view of the electrical connector assembly 100 of the present disclosure, and illustrates a mating state between the female connector 4 of the first embodiment and the male connector 2 (there is not a mating tolerance); FIG. 14 illustrates a mating state between the female connector 4 of the first embodiment and a male connector 2a (there is a mating tolerance).

The male connector 2 of FIG. 3 has been presented in the above description, so the repeated description is omitted, the male connector 2a of FIG. 14 is slightly different from the male connector 2 of FIG. 3. The male connector 2a of FIG. 14 includes: a central conductive member 21a, an insulative seat 23a which allows the central conductive member 21a to be mounted thereon, and a metal shell 22a. The metal shell 22a includes a first metal shell 221a and a second metal shell 222a which mate with and are connected with each other, the first metal shell 221a and the second metal shell 222a form a mounting passageway which penetrates the metal shell 22a, the central conductive member 21a and the insulative seat 23 are received in the mounting passageway.

Referring to FIG. 3, when the female connector 4 and the male connector 2 mate with each other, the female connector 4 is received the main mounting housing 3, the male connector 2 inserts into the mating post 31 of the main mounting housing 3, the central conductive member 21 of the male connector 2 inserts into the mating portion 431 of an upper end of the floating terminal 43 of the female connector 4, and the central conductive member 21 is clamped by the two mating elastic pieces 4313 of the mating portion 431 to realize electrical connection between the floating terminal 43 and the central conductive member 21, the conductive shell 44 of the female connector 4 extends into the metal shell 22 of the male connector 2, and the conductive shell 44 of the female connector 4 contacts the inner wall of the metal shell 22 to realize electrical connection between the conductive shell 44 and the metal shell 22, in the male connector 2 and the female connector 4, electrical signal transmission is realized by conduction between the central conductive member 21 and the floating terminal 43, signal shield is realized by conduction between the metal shell 22 and the conductive shell 44 to filter a noise.

Referring to FIG. 14, when there is assembling tolerance between the female connector 4 and the male connector 2a, axial misalignment between the male connector 2a and the female connector 4 occurs, at this time, the central conductive member 21a of the male connector 2a is still capable of aligning with an edge of the mating portion 431 of the female connector 4, by using a horn-shaped opening of the inserting guide portion 4314 of an upper end of the mating portion 431 to guide the central conductive member 21a, the central conductive member 21a smoothly inserts into the mating portion 431, and at the same time, the floating terminal 43, the insulative floating seat 42 and the elastic mating piece 442 of the conductive shell 44 of the female connector 4 also complies with the central conductive member 21a to skew, and after skewing, the mating portion 431 is still capable of maintaining reliable mating with the central conductive member 21a, the conductive shell 44 also still capable of maintaining reliable mating with the second the metal shell 222a of the male connector 2a. Even under a vibrating circumstance, the floating terminal 43 also can comply with vibrating to be deformed in the various directions, such as the left-right direction, the front-rear direction and the up-down direction, and after deformed, the floating terminal 43 still maintains reliable mating with the male connector 2a, so that stability of signal transmission is assured, and, when the floating terminal 43 floats, the insulative floating seat 42 also may comply with the floating terminal 43 to float compliantly, which is beneficial to an omni-direction floating of the floating terminal 43, at the same time is also beneficial to maintain the state of the floating terminal 43 after deformed, and make the floating terminal