CN105470722B - A kind of electric coupler component - Google Patents

Abstract

The invention provides an electrical connector assembly, which includes a plug, a socket and a connecting nut. The socket shell and the connecting nut are respectively provided with a socket ring groove and a nut ring groove. The openings at the joints are opposite, and the locking wire has a radial expansion when the socket housing and the connecting nut are screwed in place, and contacts with the groove walls of the socket ring groove and the nut ring groove respectively to axially lock the connecting nut. The locked position and when the socket housing and the connecting nut move axially relative to each other, they are squeezed by the groove wall of the nut ring groove to shrink radially and slide out of the nut ring groove to release the axial locking of the connecting nut unlock bit. The plugging and dismounting process of the electrical connector assembly of the present invention is very convenient. To install the locking wire, only need to open ring grooves on the connecting nut and the socket housing respectively. The structure is simple, the manufacturing cost is low, and the graphite sealing ring is used. And ceramic insulators improve the high temperature resistance and radiation resistance of the electrical connector components, with strong adaptability and long service life.

Description

An electrical connector assembly

technical field

The invention relates to a conductive connection device, in particular to an electrical connector assembly.

Background technique

With the continuous development of electric power communication, electronic equipment such as mobile communication is developing towards miniaturization and integration, and electrical connectors play a very important role as the interface for electrical signal transfer and transmission of electronic equipment. The electrical connector generally includes a plug, a socket, and a connecting nut for connecting the plug and the socket. The plug includes a plug housing, and the socket includes a socket housing. The plug housing and the socket housing are respectively provided with pins and jacks. When plugged into the socket, the connection is locked by the connection nut.

In order to ensure the reliability and stability of the connection, it is generally necessary to axially limit the connection nut when the plug and socket are inserted into the mating position to avoid connection failure caused by axial movement of the plug and socket during use. The connecting nut of the existing connector is generally locked and limited in the axial direction by a snap ring or a locking screw or a locking steel ball that can float in the radial direction. In these connectors, it is realized by a snap ring or a locking screw. The disassembly process of the connector connecting the nut limit is very troublesome, and the snap ring or locking screw needs to be removed. Although the disassembly process of the connector using the locking steel ball is simple, the connector structure is very complicated, which improves the manufacturing process. cost.

Contents of the invention

The object of the present invention is to provide an electrical connector assembly to solve the problems of inconvenient disassembly and assembly of the existing electrical connector and complicated locking structure of the connecting nut.

In order to solve the above-mentioned technical problems, the electrical connector assembly of the present invention adopts the following technical scheme: an electrical connector assembly includes a plug, a socket and a connecting nut, and the electrical connector assembly also includes a shaft for connecting the connecting nut. The locking wire is limited to the locking position, the locking wire is a split ring structure, the socket housing and the connecting nut are respectively provided with a socket ring groove and a nut ring groove for accommodating the locking wire, the socket ring groove and the The nut ring groove is opposite to the opening at the insertion position, and the locking wire has a radial expansion when the socket housing and the connecting nut are screwed in place and contacts with the groove walls of the socket ring groove and the nut ring groove respectively to The locking position for axial locking of the connecting nut and when the socket housing and the connecting nut move relative to each other in the axial direction are squeezed by the groove wall of the nut ring groove to shrink radially and slide out of the nut ring groove to release the lock position. Unlocking position for the axial locking of the coupling nut.

The locking wire is a round wire, and the ring groove of the nut is an arc groove.

The outer periphery of the plug housing is provided with a sealing ring installation groove with an opening facing the socket housing. A graphite sealing ring is installed in the sealing ring installation groove. The end of the body is pressure-tightly fitted with a pressure-fitting surface.

The connecting nut and the socket housing are locked and connected through transmission threads.

The plug and the socket also include jack insulators and pin insulators respectively arranged in the plug housing and the socket housing, and both the jack insulators and the pin insulators are made of ceramic materials.

The electrical connector assembly of the present invention performs axial locking and limiting on the connecting nut through the locking wire. The locking position where the cap ring groove axially locks the connecting nut and when the socket housing and the connecting nut move axially relative to each other shrinks radially inward and slides out of the socket ring groove to release the axial locking of the connecting nut The unlocking position, so that the locking wire can automatically shrink under the extrusion of the inner peripheral surface of the connecting nut when plugging in. When the plug and socket are at the plugging position, the openings of the ring groove of the socket and the ring groove of the nut are opposite. The locking wire can automatically expand and slide into the nut ring groove so as to realize the axial locking limit of the connecting nut by cooperating with the groove walls on both sides of the nut ring groove. The cap exits, the groove wall of the nut ring groove squeezes the locking wire, and the locking wire shrinks inward under the action of the extrusion force and slides out of the nut ring groove, releasing the axial locking limit of the connecting nut. position, so as to realize the separation of the plug and the socket. This way of locking and unlocking the connecting nut through the elasticity of the locking wire itself makes the process of connecting and disassembling the connector very convenient, and the structure of the connector is relatively simple. , lower manufacturing cost.

Further, the locking wire is a round wire, and the nut ring groove is an arc groove, so that the side wall of the nut ring groove on the connecting nut will give the locking wire the direction of the center of the circle where the arc groove wall is located when dismounting. The force is conducive to the radial contraction of the locking wire, and it is convenient to release the locking of the connecting nut.

Furthermore, the sealing between the plug housing and the socket housing is improved by the graphite sealing ring, which improves the high temperature resistance and radiation resistance performance of the electrical connector, so that the electrical connector can be used in nuclear power, aerospace and other harsh environments. , to ensure the safety and reliability of the conductive connection.

Further, due to the low elasticity of the graphite sealing ring itself, the locking force between the connecting nut and the socket housing can be increased by connecting the socket housing and the connecting nut through the transmission thread, so as to ensure that the socket housing is pressed tightly against the graphite seal. ring to improve the sealing effect.

Furthermore, both the jack insulator and the pin insulator are made of ceramic materials, which can adapt to harsh environments such as high temperature and high radiation, are not easily damaged, and have a long service life.

Description of drawings

1 is a schematic structural view of Embodiment 1 of the electrical connector assembly of the present invention;

Fig. 2 is a schematic structural diagram of the plug housing in Fig. 1;

Fig. 3 is the structural representation of connecting nut in Fig. 1;

Fig. 4 is a schematic structural view of the locking wire in Fig. 1;

Fig. 5 is a schematic structural view of the socket housing in Fig. 1;

FIG. 6 is a schematic structural diagram of the jack insulator in FIG. 1 .

Detailed ways

Embodiment 1 of the electrical connector assembly of the present invention: as shown in Figures 1-6, it includes a plug, a socket, and a connecting nut connected to the plug socket, and the plug includes a plug housing 2 and a jack disposed in the plug housing 2 The insulator 20, the plug housing 2 is a hollow cylindrical structure extending left and right, the jack insulator 20 is arranged in the hollow cavity, and the double-headed jack 7 extending left and right is fixed inside the jack insulator 20, and the outer periphery of the plug housing is close to the right end The position is provided with a convex ring protruding radially outward, and the left side of the convex ring is provided with a sealing ring installation groove opening to the left, and a high-purity graphite sealing ring 5 is installed in the sealing ring installation groove, and the left end of the graphite sealing ring It has a pressure-fitting surface for pressure-tight fitting with the right end of the socket housing when the plug and the socket are located at the insertion position, so as to ensure the sealing of the connection between the plug and the socket. The left end extension of the plug housing 2 has a On the outer peripheral surface that fits with the socket, the left end of the plug housing 2 is provided with an inward edge extending radially inward from the inner peripheral surface of the hollow cavity, and the inward edge is used to align the inner jack insulator 20 Stop in the left direction, the right end of the plug housing 2 is fixedly installed with the plug pin whose left end is inserted into the right end of the double-ended jack 7 through the plug insulator, and the plug insulator is fixed on the right end of the plug housing by the transfer ring 8, And its left end is compressed on the right end of the jack insulator 20 and cooperates with the inversion edge to fix the jack insulator in the plug housing. In order to ensure that the jack insulator 20 will not rotate relative to the plug housing, the inner circumference of the plug housing There is also a locking block extending left and right on the surface. Correspondingly, the socket insulator 20 is provided with a sliding groove 200 that guides and slides with the locking block in the left and right direction, so that the socket insulator 20 is opposite to each other during use. Circumferential rotation of the plug housing 2 ensures the fixed position of the double-headed jack in the jack insulator.

The socket includes a socket housing 1 and a pin insulator 10 arranged in the socket housing 1. The socket housing extends left and right and its right end has an inner circumference for inserting and fitting with the outer circumferential surface of the left end extension of the plug housing. On the other hand, the inside of the socket housing 10 is hollow and is fixedly connected with a socket insulator through the transfer ring 8. The socket insulator is located at the left end of the socket housing, and the socket pins extending left and right are fixed in the socket insulator. Between the plug housing and the socket housing When performing pair insertion, the right end of the socket pin is inserted from left to right in the double-headed jack 7 and realizes the conductive connection between the plug and the socket. The relative rotation of the socket housing is provided with guide grooves extending left and right on the inner peripheral surface of the socket housing for plugging and fitting with the plug housing. Correspondingly, the outer circumference of the plug housing for plugging and fitting with the socket housing The surface is provided with a guide key slidingly matched with the guide groove, and the plug and the socket realize circumferential rotation prevention through the guide groove and the guide key.

The plug and the socket are locked through the connecting nut 3. The outer peripheral surface of the socket housing 1 is provided with a three-head transmission external thread section, and the inner peripheral surface of the connecting nut 3 is provided with a three-way adapter to the external thread section on the socket housing. The head drives the internal thread section, and the inner peripheral surface of the right end of the connecting nut 3 is also provided with an annular card groove, and a collar 4 is installed in the annular card groove. The right end face stops in the rightward direction, and the screwing of the connecting nut can realize the mating of the plug and the socket, and when it is inserted in place, the right end of the socket is pressed against the graphite sealing ring to realize the sealed connection of the plug and the socket. Due to the small elasticity of the graphite sealing ring, the transmission thread can provide greater axial force to compress the graphite sealing ring to ensure the tightness of the connection. In order to ensure that the plug and socket will not be damaged during use If the conductive connection fails due to axial movement, it is necessary to prevent loosening of the connecting nut, that is, to ensure that the connecting nut will not move axially relative to the socket. Inwardly recessed nut ring groove, the outer peripheral surface of the socket housing is provided with a radially inwardly concave socket ring groove at the left end of the external thread section, when the socket and plug are inserted in place, the nut ring groove on the connecting nut Just opposite to the opening of the socket ring groove on the socket housing, a locking wire 6 is installed in the socket ring groove, and the locking wire expands radially outward and slides into the nut when the socket housing and the connecting nut are screwed in place. The locking position where the ring groove axially locks the connecting nut and the unlocking position that radially shrinks and slides out of the socket ring groove to release the axial locking of the connecting nut when the socket housing and the connecting nut move axially relative to each other , the locking wire 6 is a split ring structure. In this embodiment, the locking wire 6 is formed by bending a round wire and has the elasticity of expanding radially. The ring groove of the nut is an arc-shaped groove. When the cap is screwed into the plug-in position, the locking wire expands radially outward, the outer side of the locking wire slides into the nut ring groove, and the inner side is located in the socket ring groove, and the locking wire respectively connects with the nut ring groove through the outer peripheral surface. Cooperate with the groove wall of the socket ring groove to fix the connecting nut in the axial direction relative to the socket housing, avoiding the axial displacement of the connecting nut and the socket housing. During the disassembly process, apply force to rotate the connecting nut When making it move to the right relative to the socket housing, the groove wall of the nut ring groove radially inwardly squeezes the locking wire to overcome the elastic force of its radial expansion and makes it shrink radially, and the locking wire radially Shrink and slide out of the socket ring groove to release the axial locking of the connecting nut. At this time, the connecting nut can be pulled out of the socket to realize the separation of the socket and the plug.

Embodiment 2 of the electrical connector assembly of the present invention: the difference from Embodiment 1 is that the locking wire is a rectangular wire, the nut ring groove is a V-shaped groove with the opening facing inward, and the groove walls on both sides of the V-shaped groove are Cooperate with the adjacent two rectangular sides of the rectangular locking wire respectively. When the connecting nut is unscrewed from the socket, the V-shaped groove wall of the nut ring groove will provide the locking wire with a squeezing force perpendicular to the groove wall. The extrusion force radially tilts toward the axis of the socket, which is beneficial to extrude the locking wire from the ring groove of the nut to contact the locking of the connecting nut.

Embodiment 3 of the electrical connector assembly of the present invention: the difference from Embodiment 1 is that the locking wire is a round wire, the nut ring groove is a rectangular groove, and the groove depth of the rectangular groove is smaller than that of the circular locking wire half of the diameter.

Embodiment 4 of the electrical connector assembly of the present invention: the difference from Embodiment 1 lies in that the connection nut and the socket housing are connected by triangular threads.

The electrical connector assembly of the present invention realizes the locking and unlocking of the connecting nut through the elastic deformation of the locking wire, and the compression of the locking wire by one side of the nut ring groove on the connecting nut makes the locking wire The unlocking is realized by radial contraction, and the insertion and removal processes are very convenient. The installation of the locking wire only needs to open ring grooves on the connecting nut and the socket housing respectively. The structure is simple and the manufacturing cost is low. In addition, the use of Graphite sealing rings and ceramic insulators improve the high temperature resistance and radiation resistance of electrical connector components, with strong adaptability and long service life.

Claims (4)

1. a kind of electric coupler component, including plug, socket and coupling nut, plug and socket is locked by coupling nut to be connected Connect, it is characterised in that plug casing periphery is equipped with the bulge loop projected radially outward, the inner peripheral surface of coupling nut close to right end position Going up has internal thread segment, and the right positions on the right end inner peripheral surface of coupling nut in internal thread segment are equipped with annular slot, annular snap Collar is housed in groove, the left side of collar is used to carry out block in right direction to the right side of the bulge loop on plug casing, Screw coupling nut can realize plug and socket to insert；The electric coupler component is further included for being carried out to coupling nut The spacing locking silk of axial locking, the locking silk is open ring structure, is respectively provided with Socket casing and coupling nut The socket annular groove and nut annular groove of locking silk are accommodated, the socket annular groove is located on the outer circumferential surface of Socket casing in external thread section Left end, the nut annular groove are located on the inner peripheral surface of coupling nut and exist in the left end of internal thread segment, socket annular groove and nut annular groove Opening is opposite at grafting position, the locking silk have Socket casing and coupling nut spinning in place when radial direction spreading and respectively with The contact of the cell wall of socket annular groove and nut annular groove with the locking position of axial locking is carried out to coupling nut and in Socket casing and When coupling nut is axially opposing mobile by nut annular groove cell wall extruding and radial contraction and skid off nut annular groove release to connection The solution lock-bit of nut axial direction locking, silk radially outward spreading, lock are locked when Socket casing and coupling nut spinning are to grafting position Slipped on the outside of tight silk in nut annular groove, inner side be located in socket annular groove, lock silk by outer circumferential surface respectively with nut annular groove and The cell wall block of socket annular groove, which coordinates, to be realized to coupling nut relative to the fixation in Socket casing axial direction.

2. electric coupler component according to claim 1, it is characterised in that the locking silk is circular wire, the nut Annular groove is arc groove.

3. electric coupler component according to claim 1, it is characterised in that the periphery of plug casing is equipped with opening direction and inserts The sealing ring mounting groove of seat shell body, carbon seal ring is provided with sealing ring mounting groove, and carbon seal ring, which has, to be used in plug When being located at socket at grafting position and Socket casing the top pressure mating surface that coordinates of end top pressure sealing.

4. according to the electric coupler component described in claim 1-3 any one, it is characterised in that the plug and socket also wraps Include the jack insulator being respectively arranged in plug casing and Socket casing and contact pin insulator, jack insulator and contact pin insulator It is ceramic material.