TW201817095A - Plug connector and assembly thereof - Google Patents

Abstract

A plug connector assembly includes a plug connector and a receptacle connector. The plug connector includes a first insulative housing, a locking member and an insulating shell. The receptacle connector has a shell. The locking member has a resilient latching arm. The latching arm includes a protruding portion and a latch which extends out of the first insulative housing. The insulating shell has a push button corresponding to the protruding portion. The shell has a limiting groove corresponding to the latch. The latch can be limited in the limiting groove. When pressing the push button, the push button drives the latching arm to be resiliently deformed, so that the latch can get out of the limit of the limiting groove. There are several steps of the contact of the plug connector assembly, so that the spark derived from the instantaneous discharger of the power terminal could be avoid.

Description

Plug connector and combination thereof

The present invention relates to a plug connector and a combination thereof, and more particularly to a plug connector and a combination thereof which are relatively safe when inserted and removed.

For the prior art, please refer to an electrical connector assembly disclosed in the Chinese Patent Application No. CN204144588U, which includes a first connector and a second connector that cooperate with each other, the first connector including a first insulating body and being held by the first a first terminal of the insulative housing, the second connector includes a second insulative housing and a second terminal fixed to the second insulative housing, the first and second terminals each include five terminals, wherein the five terminals are respectively located in the middle The detecting terminal and the power terminal on both sides of the detecting terminal are arranged in the mating direction, the five first terminals are flushly arranged, and the five second terminals are also flushly arranged, when the first and second connectors are plugged and unplugged, The first and second power terminals are simultaneously turned on or off with the first and second detecting terminals, which may cause instantaneous discharge of the power terminals, which may cause safety hazards and affect the service life of the electrical connectors.

Therefore, it is indeed necessary to provide a new electrical connector and combinations thereof to overcome the above drawbacks.

It is an object of the present invention to provide a plug connector and a combination thereof that can avoid instantaneous discharge of a power terminal and improve the safety of the plug connector.

The present invention is achieved by the following technical solution: a plug connector comprising a first insulative housing, a first terminal fixed to the first insulative housing, and being fixed to the first insulative body The upper locking member and the insulating outer casing assembled on the outer side of the first insulative housing, the locking member includes a buckle arm capable of being rebounded, and the locking arm is provided to protrude from the first insulation a protruding portion of the body, wherein the insulating cover is provided with a button that can press the protruding portion corresponding to the protruding portion, and the locking arm is provided with a locking portion that protrudes in the same direction as the protruding portion, and the pressing portion is pressed The button can be pressed to press the protrusion to further elastically deform the locking arm in a direction away from the protruding direction to offset the locking portion in the protruding direction.

In order to solve the above technical problem, the present invention is also achieved by the following technical solution 2: a plug connector assembly defining a mating direction including a plug-in mating plug connector and a socket connector, the plug connector including An insulative housing, a first terminal fixed to the first insulative housing, a latching member fixed to the first insulative housing, and an insulative housing assembled to the outside of the first insulative housing, the socket connector including a second insulating body, a second terminal fixed to the second insulating body, and a housing disposed outside the second insulating body, the locking component comprising a lockable arm capable of being rebounded, the lock The buckle arm is provided with a protruding portion protruding from the first insulative housing and a latching portion protruding in the same direction as the protruding portion, and the insulating housing is provided with a position for pressing the protruding portion corresponding to the position of the protruding portion a button, the housing is provided with a limiting slot corresponding to the position of the latching portion, and the latching portion is limited to the limiting slot when the plug connector is mated and coupled, and pressing the button can be implemented. The button Contact with the projecting portion and further drive the latch arm in the projecting direction of the elastic deformation, so that the latching portion is disengaged from the stopper groove limiting.

In contrast to the prior art, the present invention has at least the following effects: the plug connector of the present invention and the combination thereof have a latching member and a button that can be used to divide or disconnect the plug connector assembly into a plurality of stages, namely, detecting The measuring terminal and the power terminal are connected or disconnected at different timings, which avoids the instantaneous discharge of the power terminal, improves the safety index and the service life of the plug connector, and further increases the design of the first button control detecting terminal opening and closing. The plug connector is safe and easy to operate.

The first figure is a perspective view of the plug connector of the present invention;

The second figure is an exploded perspective view of the plug connector shown in the first figure;

The third figure is an exploded perspective view of the plug connector at another angle shown in the second figure;

Figure 4 is a partial exploded perspective view of the plug connector of the present invention;

Figure 5 is a perspective view of the socket connector of the present invention;

Figure 6 is an exploded perspective view of the socket connector shown in Figure 5;

Figure 7 is an exploded perspective view of the socket connector at another angle shown in Figure 6;

Figure 8 is a perspective view of the plug connector assembly of the present invention;

Figure 9 is a perspective view showing another angle of the plug connector assembly shown in Figure 8;

Figure 11 is a perspective view showing the docking state of the plug connector of the present invention;

11 is a cross-sectional view of the plug connector assembly of the present invention taken along line XI-XI in the tenth diagram;

Figure 12 is a cross-sectional view of the plug connector assembly of the present invention taken along the line XII-XII in the tenth diagram;

Figure 13 is a perspective view showing another docking state of the plug connector of the present invention;

Figure 14 is a cross-sectional view of the plug connector assembly of the present invention taken along line XV-XV of Figure 13;

Figure 15 is a cross-sectional view of the plug connector assembly of the present invention taken along the line XVI-XVI in Figure 13;

Figure 16 is a cross-sectional view of the plug connector shown in Figure 14 when the first button is pressed;

Figure 17 is a cross-sectional view of the plug connector shown in Figure 12 when the second button is pressed;

Figure 18 is a perspective exploded view of the first terminal of the plug connector assembly of the present invention and a perspective view of the second terminal;

Figure 19 is a perspective view of the plug connector of the present invention when the first terminal is mated with the second terminal.

Hereinafter, specific embodiments of the plug connector of the present invention and combinations thereof will be described with reference to the first to the nineteenth drawings.

Referring to the first to ninth figures, the present invention discloses a plug connector assembly 1000 that includes a plug connector 100 and a receptacle connector 200 that are mated to each other. The mutual insertion direction of the plug connector 100 and the receptacle connector 200 is defined as a docking direction.

As shown in the first to seventh embodiments, the plug connector 100 is provided with a first abutting surface 1 at the front end of the mating direction and includes a first insulative housing 2 and a first holding of the first insulative housing 2 a terminal 3, a locking member 9 fixed on the first insulative housing 2, and an insulating housing 7 covering the first insulative housing 2, the insulative housing 7 is provided with a button; the socket connector 200 is provided The second abutting surface 4 includes a second insulative housing 5, a second terminal 6 held by the second insulative housing 5, and a housing 8 disposed outside the second insulative housing 5, the housing 8 An interface space 10 is formed between the second terminal 6 and the second terminal 6. In the embodiment, the housing 8 is made of stainless steel. The first docking surface 1 and the second mating surface 4 are respectively the portions of the plug connector 100 and the socket connector 200 that are firstly docked with each other when the plug connector 100 and the socket connector 200 are respectively connected to each other, and the first terminal 3 includes the first power terminal 31. And the first detecting terminal 32, the second terminal 6 includes a second power terminal 61 and a second detecting terminal 62 respectively matched with the first power terminal 31 and the first detecting terminal 32, the first The second power terminals 31 and 61 are respectively provided with first and second contact portions 311 and 611 extending in the butting direction and abutting each other, and the first and second detecting terminals 32 and 62 are respectively in contact with each other to achieve detection. The first and second detecting portions 321 and 621 of the measuring function, the first contact portion 311 is closer to the first mating surface 1 than the first detecting portion 321 , and the second contact portion 611 is compared with the first detecting portion 321 . The second detecting portion 621 is closer to the second mating surface 4 .

Referring to the fourth figure, the first insulative housing 2 includes a pair of first carrying portions 21 extending along the mating direction and a second carrying portion 22 between the two first carrying portions 21, the two The first bearing portion 21 is closer to the first abutting surface 1 than the second bearing portion 22 and further forms a recess 23 at the front end of the second bearing portion 22 (refer to the first figure), and each of the first bearing portions 21 A receiving groove 211 is formed through the front end thereof. The second receiving portion 22 is provided with a groove 221 penetrating the front end thereof and penetrating the recess 23, and is located at a side of the groove 221 and penetrates with the groove 221 Slot 222 (see the third figure for the label). The first contact portion 311 is received in the receiving slot 211, and the first detecting portion 321 is received in the slot 222 and protrudes into the recess 23, that is, the first power source. The terminal 31 is disposed on the first carrying portion 21 , and the first detecting terminal 32 is disposed on the second carrying portion 22 .

Referring to the sixth and eleventh drawings, the second insulative housing 5 includes a plurality of slots 51 and a forwardly projecting boss 52. The second contact portion 611 protrudes forwardly from the slot. 51. When the plug connector 100 and the socket connector 200 are butted against each other, the boss 52 is received in the recess 23 of the plug connector 100, and the front end of the boss 25 is provided with a pair of forward convex portions. The second detecting portion 621 is held between the two supporting portions 521 for forward or reverse contact with the first detecting portion 321 Reach the detection function.

The first terminal 3 includes a pair of first signal terminals 33, and the second terminal 6 includes a pair of second signal terminals 63 that cooperate with the first signal terminals 33 to transmit signals, and the recesses 23 are provided with a pair of locations. a first signal terminal slot 231 for receiving the first signal terminal 32 outside the recess 23, the boss 52 is provided with a pair of external signal terminals for housing the second signal terminal The second signal terminal slot 522 of the 63, the first and second signal terminals 33, 63 are respectively provided with first and second docking portions 331 received in the first and second signal terminal slots 321, 522, 631. Referring to FIG. 16 , the first docking portion 331 is closer to the first mating surface 1 than the first contact portion 311 , and the second detecting portion 621 is more than the second docking portion 631 . The first and second signal terminals 33, 63 are earlier than the first and second detecting terminals 32, when the plug connector 100 and the receptacle connector 200 are connected to each other. 62 makes contact and makes contact later than the first and second power terminals 31, 61.

The first terminal 3 further includes a pair of first ground terminals 34, and the second terminal 6 further includes a pair of second ground terminals 64, and the first and second ground terminals 34, 64 are respectively provided with a first Second ground portions 341, 641. In the embodiment, the first grounding portion 341 is closer to the first mating surface 1 than the first contact portion 311, and the second grounding portion 641 and the second portion are in the mating direction. The contact portion 611 is flush, and therefore, the first and second ground terminals 34, 64 are the earliest contact conduction among all the terminals when docked.

As shown in the eighth to ninth diagrams, the first terminal 3 and the second terminal 6 each include seven terminals that can be mutually abutted, and the seven terminals of the first terminal 3 are respectively the first Detector located in the middle. a measuring terminal 32, a pair of first signal terminals 33 located at two sides of the first detecting terminal 32, a pair of first power terminals 31 located outside the first signal terminal 33, and a pair of first ones located at the outermost side The grounding terminal 34; the arrangement of the terminals of the second terminal 6 corresponds to the arrangement of the first terminals 3.

As shown in FIG. 18 and FIG. 19, the first contact portion 311 of the first power terminal 31 includes a sleeve 3111 and an annular elastic clamping member 3112 disposed in the sleeve 3111. The element 3112 includes a plurality of elastic pieces 3113 extending in the mating direction and circumferentially arranged, and the elastic piece 3113 is provided with a mating point 3114 protruding in the center direction of the circumference. Referring to the twelfth figure, the sleeve 3111 includes a limiting portion 3115 protruding toward the inside thereof, and the clamping member 3112 is located at the limiting portion 3115 at an upper limit of the mating direction. When the plug connector 100 is mated with the receptacle connector 200, the second contact portion 611 is inserted into the clamping member 3112, and the mating point 3114 and the second contact portion 611 are electrically connected by multiple points of contact. The multi-channel is turned on so that the plug connector assembly 1000 has a small temperature rise while performing large current transmission.

Referring to the eleventh and thirteenth drawings, the first detecting terminal 32 has a convex portion 322 protruding from the second carrying portion 22 at a rear side of the first detecting portion 321 . The button includes a first button 71 disposed corresponding to the position of the raised portion 322 and pressable along the extending direction of the raised portion 322, and pressing the first button 71 causes the first button 71 and the convex portion The first detecting portion 321 is elastically deformed in a direction perpendicular to the mating direction, so that the first detecting terminal 32 and the second detecting terminal 62 can be disconnected. Electrical connection.

As shown in the first to seventh figures, the locking member 9 fixed to the first insulative housing 2 includes a latching arm that can be rebounded. In this embodiment, the locking arm a pair of first latching arms 91 extending above the second carrying portion 22 in the mating direction, the protruding portion 322 being located between the pair of first latching arms 91, the first A latching arm 91 is provided with a first protruding portion 911 protruding from the second carrying portion 22 and extending in the same direction as the protruding portion 322, and a first protruding portion in the same direction as the first protruding portion 911 The latching portion 912. As such, the position of the first protrusion 911 is also corresponding to the first button 71, and the first button 71 can press the first protrusion 911. A first limiting slot 81 extending in the same direction as the first latching arm 91 is disposed at a position corresponding to the first latching portion 912 of the housing 8 when the plug connector assembly 1000 is plugged and paired. The first latching portion 912 is limited to the first limiting slot 81, and pressing the first button 71 can realize that the first button is in contact with the convex portion 322 and also with the first protruding The portion 911 contacts and further drives the first latching arm 91 to be elastically deformed away from the protruding direction, so that the first latching portion 912 is offset along the protruding direction, so that the first The latching portion 912 is disengaged from the limit of the first limiting slot 81.

As shown in the second to fourth figures, the locking member includes a pair of second locking arms 92 extending in the same direction as the first locking arm 91, and the two second locking arms 92 are respectively fixed. The second latching arm 92 extends to the second latching portion 922 on the outer side of the two first loading portions 21, and the housing 8 is provided with the first limiting portion corresponding to the second latching portion 922 The second limiting slot 82 is parallel to the second limiting slot 82. When the plug connector assembly 1000 is mated, the second latching portion 922 is limited to the second limiting slot 82. In this embodiment, The extending direction of the second latching portion 922 is perpendicular to the extending direction of the first latching portion 912. In the mating direction, the length of the second limiting slot 82 is greater than the first limiting slot 81. length.

The second latching arm 92 is provided with a second protruding portion 921 extending in the same direction as the second latching portion 922, and the button on the insulating housing 7 further includes a position corresponding to the second protruding portion 921. The second button 72 is pressed in the direction in which the second protrusion 921 extends. Referring to the twelfth, sixteenth and seventeenth aspects, when the plug connector assembly 1000 is mated, the second latching portion 922 is limited to the second limiting slot 82, and the pressing is performed. The second button 72 can realize that the second button 72 contacts the second protrusion 921 and further elastically deforms the second latch arm 92 to cause the second latch portion 922 to occur along the extending direction. The offset is thereby released from the limit of the second limiting slot 82.

Referring to the tenth to seventeenth drawings, the illustrations are different docking processes of the plug connector 100 and the receptacle connector 200. The docking process described above is described in detail below. The first and second latching portions 912 and 922 are respectively located in the first and second limiting slots 81. The first and second latching portions 912 and 922 are respectively connected to the first and second limiting slots 81. Referring to the twelfth and thirteenth drawings, when the mated plug connector 100 is pulled out from the receptacle connector 200, the first button 71 is pressed, the boss The first detecting portion 321 is disconnected from the second detecting portion 621 by the first detecting portion 211, and the first detecting portion 321 is disconnected from the first detecting portion 621. The power supply terminals 31 and 61 are still in electrical contact, and the first latching portion 912 is disengaged from the limit of the first limiting slot 81, and the second latching portion 922 is still located at the second position. The position of the second limiting slot 82 is greater than the length of the first limiting slot 81, so that the plug connector 100 can further extend along the extending direction of the second limiting slot 82 (ie Moving in abutting direction) away from the position of the socket connector 200 to the edge of the second limiting slot 82 near the second mating surface 4 (as shown in FIG. 14) The second latching portion 922 can be biased to be disengaged from the second limiting slot 82 by pressing the second button 72 as shown in the fourteenth to seventeenth embodiments. The limit position, at this time, the plug connector 100 can be completely pulled out of the socket connector 200 along the docking direction, while the first and second power terminals 31, 61 are disconnected. The arrangement is such that the first and second detecting terminals 32 and 62 are electrically disconnected from the first and second power terminals 31 and 61 at different timings, thereby avoiding instantaneous discharge of the power terminal and improving the speed. Safety index and service life of the plug connector.

Referring to the first to third figures, the plug connector 100 is provided with a metal housing 11 covering the first and second carrying portions 21, 22. In the embodiment, the metal housing 11 is The stainless steel material is used to provide good strength support for the plug connector 100; in addition, the metal housing 11 and the housing 8 have a guiding function when the plug connector 100 is docked with the socket connector 200. The insulating housing 7 has a two-piece structure, that is, it can be fixed to the outside of the metal housing 11 by means of up-and-down docking assembly.

Referring to the fifth to seventh embodiments, the second insulative housing 5 is provided with a first cooperating portion 53 and a third cooperating portion 54 recessed inwardly, and the first and third cooperating portions 53 and 54 respectively Located on opposite sides of the second insulative housing 5; the housing 8 includes a second coordinating portion 83 and a fourth coordinating recess that are recessed in the same direction as the first and third cooperating portions 53, 54 respectively. The first and second locating portions 53 and 83 are relatively assembled and fixed, and the second and third locating portions 54 and 84 are relatively assembled and fixed, so that the second insulating body can be 5 is assembled and fixed in the housing 8.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

1‧‧‧ first docking surface

51‧‧‧ slotting

10‧‧‧ docking space

52‧‧‧Boss

100‧‧‧ plug connector

521‧‧‧Support

1000‧‧‧ plug connector combination

522‧‧‧Second signal terminal slot

2‧‧‧First Insulation Body

53‧‧‧First Coordination Department

200‧‧‧ socket connector

54‧‧‧ Third Coordination Department

21‧‧‧First load bearing department

6‧‧‧second terminal

22‧‧‧Second load bearing department

61‧‧‧second power terminal

211‧‧‧ housing trough

611‧‧‧Second contact

221‧‧‧ Groove

62‧‧‧Second detection terminal

222‧‧‧ slots

621‧‧‧Second Detection Department

23‧‧‧ dent

63‧‧‧second signal terminal

231‧‧‧First signal terminal slot

631‧‧‧Second docking department

3‧‧‧First terminal

64‧‧‧Second ground terminal

31‧‧‧First power terminal

641‧‧‧Second grounding

311‧‧‧First contact

7‧‧‧Insulated housing

3111‧‧‧Sleeve

71‧‧‧ first button

3112‧‧‧Clamping elements

72‧‧‧ second button

3113‧‧‧Shrap

8‧‧‧shell

3114‧‧‧Contacts

81‧‧‧First limit slot

3115‧‧‧Limited

82‧‧‧Second limit slot

32‧‧‧First detection terminal

83‧‧‧Second Matching Department

321‧‧‧First Detection Department

84‧‧‧ Fourth Coordination Department

322‧‧‧ raised parts

9‧‧‧Locks

33‧‧‧First signal terminal

91‧‧‧First lock arm

331‧‧‧First docking

911‧‧‧First protrusion

34‧‧‧First grounding terminal

912‧‧‧First lock

341‧‧‧First grounding

92‧‧‧Second lock arm

4‧‧‧second docking surface

921‧‧‧Second protrusion

5‧‧‧Second insulation body

922‧‧‧Second lock

no

Claims (10)

A plug connector comprising: First insulating body; The first terminal is fixed to the first insulating body; a locking member is fixed on the first insulative housing, the locking member includes a latching arm that can be rebounded, and the locking arm is provided with a protruding portion protruding from the first insulative housing ;and The insulating housing is assembled on the outer side of the first insulative housing, and the insulative housing is provided with a button that can press the protruding portion corresponding to the position of the protruding portion; The latching arm is provided with a latching portion that protrudes in the same direction as the protruding portion, and pressing the button can press the protruding portion to further drive the latching arm to be elastic away from the protruding direction. Deformed such that the latching portion is offset in the protruding direction. The plug connector of claim 1, wherein the first insulative housing comprises a pair of first carrying portions extending in a pair of connecting directions and a second carrying portion between the two first carrying portions The latch arm includes a pair of first latch arms extending along the docking direction and disposed above the second carrier portion, and the first latch arm is disposed to protrude from the second carrier portion a first protrusion and a first latching portion that protrudes in the same direction as the first protrusion. The plug connector of claim 2, wherein the button comprises a first button corresponding to a position of the first protrusion and can be pressed in a protruding direction of the first protrusion, pressing the button The first button can realize that the first button contacts the first protruding portion and further drives the first locking arm to elastically deform in the protruding direction, so that the first locking portion is along the protruding portion The direction is offset. The plug connector of claim 3, wherein the latching member comprises a pair of second latching arms extending in the same direction as the first latching arm, the two latching arms respectively Fixed to the outside of the two first carrying portions, the second locking arm extends to be provided with a second latching portion, and the extending direction of the second latching portion is perpendicular to the extending direction of the first latching portion. The second locking arm is provided with a second protrusion extending in the same direction as the second locking portion, the button includes a position corresponding to the second protrusion and can extend along the second protrusion Pressing the second button, the second button is pressed to contact the second protrusion and further driving the second latch arm to be elastically deformed, so that the second latch portion is along The extension direction is offset. The first connector includes a first detecting terminal, and the first detecting terminal is provided with a first detecting portion, and the first detecting portion is configured by the first detecting terminal. a protrusion protruding from the first insulative housing is disposed at the rear, the protrusion is located between the pair of latch arms, and pressing the button causes the button to contact the boss and further The first detecting portion is elastically deformed. A plug connector assembly defining a mating direction comprising: The plug connector includes a first insulative housing, a first terminal fixed to the first insulative housing, a latching member fixed to the first insulative housing, and an insulative housing assembled to the outside of the first insulative housing ;and The socket connector is mateably mated with the plug connector, the socket connector includes a second insulative housing, a second terminal held by the second insulative housing, and a cover disposed outside the second insulative housing Housing Wherein the locking member comprises a latching arm that can be rebounded, the locking arm is provided with a protruding portion protruding from the first insulating body and a latch protruding in the same direction as the protruding portion The insulative housing is provided with a button for pressing the protruding portion corresponding to the protruding portion, and the housing is provided with a limiting slot corresponding to the position of the locking portion, when the plug connector is combined and inserted When the pairing is performed, the locking portion is located in the limiting slot, and pressing the button can achieve the button contacting the protruding portion and further driving the locking arm to elastically deform along the protruding direction, so that the The latching portion is disengaged from the limit of the limiting slot. The plug connector assembly of claim 6, wherein the first insulative housing comprises a pair of first carrying portions extending along the mating direction and a second portion between the two first carrying portions The latching arm includes a pair of first latching arms extending along the mating direction and disposed above the second carrying portion, the first latching arm being disposed to protrude from the second a first protruding portion of the carrying portion and a first locking portion protruding in the same direction as the first protruding portion, wherein the limiting slot includes a first limiting slot disposed corresponding to the first locking portion. The plug connector assembly of claim 7, wherein the button includes a first button corresponding to a position of the first protrusion and can be pressed in a protruding direction of the first protrusion, pressing the button The first button can realize that the first button contacts the first protruding portion and further drives the first locking arm to elastically deform in the protruding direction to disengage the first locking portion from the first button The limit of a limit slot. The plug connector assembly of claim 8, wherein the latching member comprises a pair of second latching arms extending in the same direction as the first latching arm, the two second latching arms Separately disposed on the outer side of the two first carrying portions, the second latching arm extends to be provided with a second latching portion, and the housing is provided with a second limiting slot corresponding to the second latching portion, The second locking arm is provided with a second protrusion extending in the same direction as the second locking portion, the button includes a position corresponding to the second protrusion and can be pressed along the extending direction of the second protrusion a second button, the second button is pressed to contact the second protrusion and further to elastically deform the second locking arm to disengage the second locking portion The limit of the second limit slot. The plug connector assembly of claim 9, wherein the first terminal comprises a first detecting terminal and a first power terminal, and the second terminal comprises a first detecting terminal and a first detecting terminal respectively a second detecting terminal and a second power terminal that are connected to the power terminal, wherein the length of the second limiting slot is greater than the length of the first limiting slot, when the mated plug connector is connected from the socket When the device is pulled out, pressing the first button causes the first button to drive the convex portion and the first protruding portion to be pressed, so that the first and second detecting portions are disconnected and the first button a latching portion is disengaged from the limit of the first limiting slot, and the first and second power terminals are still connected, and the second latching portion is still located in the second limiting slot, further Moving the plug connector along the second limiting slot to a position away from the socket connector to an edge of the second limiting slot, and finally, pressing the second button to make the second The latching portion is biased to be disengaged from the limit of the second limiting slot, and the plugging can be performed at this time. The head connector completely pulls out the receptacle connector along the docking direction.