A practical 8-MT contact assembly for electrical connectors

Abstract

The present invention relates to the technical field of connectors and provides an 8-MT type contact for a practical electrical connector combination, wherein the 8-MT type contact includes a first contact and a second contact matching the first contact, the first contact including a first ferrule and a first spring housed in a first housing, the first housing being divided into a plug-in portion and a first tube body, the plug-in portion having a first notch, a plug-in notch, and a first cavity, the first cavity being provided with a first slide groove, the first slide groove being connected to the first notch, the first ferrule being dynamically positioned in the first notch and the first slide groove along the first slide groove, the first tube body having a second cavity and a first spring piece having a first barb, the first spring being positioned in the second cavity and abutting against the first ferrule at the front end, the plug-in portion and the first tube body being fixed together via interference between a first convex ring / concave ring and the first barb in the first cavity, the above-mentioned structure solves the technical problems of the electrical connector combination and achieves the effects of convenient manufacturing, reduced cost, and expanded practical scope.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber connection, and in particular to an 8-MT type contact piece of a practical electric connector assembly. Background Art

[0002] Fiber optic connection technology generally includes a socket connector and a plug connector compatible with the socket connector. For example, Chinese patent publication No. CN102195192A discloses a hybrid connector, which includes a socket connector (i.e., a "fiber optic socket connector") and a plug connector (i.e., a "fiber optic plug connector"), wherein the fiber optic socket connector includes a socket housing for receiving a first electrical contact, a first optical fiber ferrule, a first ferrule fixing member for the first ferrule, and a first spring element acting on the first ferrule fixing member and held by a first push spring element; the fiber optic plug connector includes a plug housing for receiving a second electrical contact, a second optical fiber ferrule, a second ferrule fixing member for the second ferrule, and a second spring element acting on the second ferrule fixing member and held by a second push spring element, wherein the first electrical contact is designed as a contact socket, and the second electrical contact is designed as a contact pin. However, although the optical fiber receptacle connector and the optical fiber plug connector adapted therewith can effectively solve the technical problems of relative alignment between the two and reducing the product volume, they are useless if they are separately assembled with other connecting devices (such as ordinary electrical connector receptacles and / or plugs). For example, when the optical fiber connector receptacle and / or plug are matched with the ordinary electrical connector receptacle and / or plug, they can only be docked and fixed separately, which is not conducive to reducing the occupied space, saving materials, and reducing costs. Summary of the Invention

[0003] In order to solve the above technical problems, the main purpose of the present invention is to provide an 8-MT type contact.

[0004] To achieve the above-mentioned purpose, the technical solution applied by the present invention is: an 8-MT type contact is provided, including a first contact and a second contact matching the first contact, the first contact including a first ferrule and a first spring accommodated in a first shell, the first shell is divided into a plug-in part and a first tube body, wherein: the plug-in part has a first notch and a plug-in notch arranged crosswise to the first notch, a first cavity is hollowed out forward at the rear end of the plug-in part, a first slide groove is symmetrically provided in the first cavity, the first slide groove is connected to the first notch and is larger than the width of the first notch, the first ferrule is dynamically located in the first notch and the first slide groove along the trajectory of the first slide groove, and a first convex ring / concave ring is provided near the mouth of the first cavity; the first tube body has a second cavity and a first elastic piece with a first barb extending from its front end, the first spring is in the second cavity and its front end abuts against the first ferrule, the plug-in part and the first tube body are fixed as one through the interference of the first convex ring / concave ring and the first barb.

[0005] In this embodiment, preferably, the first tube body has a first tapered portion at a rear end relative to the front end, the first tapered portion extends rearward to form a first external threaded portion, the first external threaded portion has a first thread hole, and the first thread hole passes through the second cavity.

[0006] In this embodiment, preferably, a first optical cable is further included, the first optical cable being connected to the first ferrule and passing through the first spring and the second cavity to the first wire hole.

[0007] In this embodiment, preferably: the second contact piece includes a second insert and a second spring accommodated in the second shell, the second shell is divided into an insertion part and a second tube body, and the tail of the second tube body is screwed with a wire sleeve, wherein: the insertion part has a mating part and a third cavity, the mating part matches the insertion notch and has a second notch, the second notch is at the front end of the third cavity, and a second slide groove is symmetrically provided in the third cavity, the second slide groove is connected to the second notch and is larger than the width of the second notch, the second insert is dynamically in the second notch and the third cavity with the second slide groove as the trajectory, the third cavity has a second convex ring / concave ring, and the second convex ring / concave ring is close to the cavity mouth of the third cavity.

[0008] In this embodiment, preferably: the second tube body has a second spring piece, a fourth cavity and a second external threaded portion, the second spring piece has a second hook, the fourth cavity accommodates the second spring, the front end of the second spring abuts the second insert, the second external threaded portion has a second wire hole, the insertion portion and the second tube body are stabilized by the interference of the second convex ring / concave ring and the second barb; the wire pressing sleeve has a second internal threaded portion and a wire pressing hole, the second internal threaded portion is screwed to the second external threaded portion, so that the second wire hole is communicated with the wire pressing hole, and the wire pressing hole is distributed with strip ribs.

[0009] In this embodiment, it is preferred that: a positioner and a second optical cable are further included, wherein: the positioner is sleeved on the outer periphery of the wire pressing sleeve and has a tube body and a tube cover, the tube body has a basic part, the basic part has a receiving cavity, a third external threaded part is provided at the rear section of the basic part, the third external threaded part has a third wire hole communicating with the receiving cavity, and a circular ring part is raised on the outer periphery of the basic part near the third external threaded part; the tube cover has a screwing part and a cover top, a slope is formed in a contraction form between the screwing part and the cover top, so that the diameter of the cover top is formed smaller than the diameter of the screwing part, the screwing part has a third internal threaded part, the third internal threaded part is screwed with the third external threaded part, so that the tube body and the tube cover are screwed into one; the second optical cable is connected to the second core and passes through the second spring through the second wire hole and the wire pressing hole and is fixed with strip ribs distributed through the wire pressing hole.

[0010] In order to solve the above technical problems, the main purpose of the present invention is to provide an electrical connector with practical 8-MT type contacts.

[0011] To achieve the above-mentioned purpose, the technical solution applied by the present invention is: an electrical connector is provided, which is assembled with 8-MT type contacts, wherein: the electrical connector includes a female socket and a male head matching the female socket, the female socket includes a plug-in shell and first and second female sockets contained in the plug-in shell, a first space is formed between the first and second female sockets, the first space is provided with a first fixing member, and the first contact is positioned in the plug-in shell by the first fixing member; the male head includes an insert shell matching the plug-in shell and first and second male heads contained in the insert shell, the first male head matches the first female socket, the second male head matches the second female socket, and a second space corresponding to the first space is formed between the first male head and the second male head, the second space is provided with a second fixing member corresponding to the first fixing member, and the second contact is positioned in the insert shell by the second fixing member, so that the second contact corresponds to the first contact.

[0012] In this embodiment, preferably: the first fixing member includes a first positioning cover, a first rubber member and a first bridging plate, the first rubber member is fixed to the bottom of the first space by combining with the connector shell, and has a first outlet, the first positioning cover is equivalent to the appearance of the first contact member, and has front and rear ports and positioning claws, the rear port of the first positioning cover is buried in the first rubber member with the first outlet as the center, the front port of the first positioning cover is bridged between the first female seat and the second female seat through the first bridging plate, and the first contact member is arranged in the first positioning cover and is supported by the positioning claw.

[0013] In this embodiment, preferably: the second fixing member includes a second positioning cover, a second rubber member and a second bridging plate, the second rubber member is fixed to the bottom of the second space by combining with the insert shell, and has a second outlet, the second positioning cover is equivalent to the appearance of the second contact member, and has front and rear ports and positioning claws, the rear port of the second positioning cover is fixed in the second rubber member in the form of partially embedded in the second outlet, the front port of the second positioning cover is bridged between the first male head and the second male head through the second bridging plate, the second contact member is arranged in the second positioning cover and is supported by the positioning claw, and the locator sleeved on the second contact member is clamped on the male head through the front end of the locator by the second outlet.

[0014] In this embodiment, it is preferred that: the female socket has a first ear portion, the male connector has a second ear portion arranged corresponding to the first ear portion, and screw holes are respectively provided in the first and second ears. When the female socket is plugged into the male connector, the first and second contact members are also plugged into and connected. The screw holes are tightened by screws, so that the female socket and the male connector are firmly integrated.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The 8-MT type contact is integrated into the ordinary electrical connector and plugged in together with the ordinary connector when docking. This eliminates the need for a separate tightening structure, which can reduce the product size and cost.

[0017] 2. A positioner is placed on the rear end of the second housing, and a crimping sleeve is used to fill the gap between the positioner and the rear end of the second housing. This allows the connecting section of the second optical cable connected to the second ferrule to be flexible when passing through the positioner. This not only improves the vibration control effect of the product, but also extends the life of the cable tail and ensures product reliability.

[0018] 3. Both the electrical connector and the 8-MT contact are directly coupled, reducing the need for fixtures during manufacturing. This not only effectively reduces costs but also allows the 8-MT contact to be fully compatible with other electrical connectors, thereby expanding the practical range of the 8-MT contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 4 is a perspective schematic diagram of an 8-MT type contact of this embodiment.

[0020] Figure 2 yes Figure 1 Exploded view of the 8-MT contact socket.

[0021] Figure 3 yes Figure 1 Cross-sectional view of the 8-MT contact socket.

[0022] Figure 4 yes Figure 1 Exploded view of the 8-MT contact plug.

[0023] Figure 5 yes Figure 1 Exploded view of the 8-MT type contact locating seat.

[0024] Figure 6 yes Figure 1 Cross-sectional view of the 8-MT contact plug and locating seat.

[0025] Figure 7 The cross-sectional view of the female connector and the matching male connector shows Figure 3 The cross-sectional structure of the 8-MT contact socket assembled in the female connector also shows Figure 6 Cross-sectional structure of the 8-MT contact plug and the positioning seat assembled in the male head of the electrical connector.

[0026] Figure 8 yes Figure 7 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0027] Although the present invention is susceptible of being embodied in different forms, only some of the specific embodiments are shown in the drawings and will be described in detail in this specification. It should be understood that this description should be regarded as an exemplary illustration of the principles of the invention and is not intended to limit the invention to that described herein.

[0028] Thus, a feature indicated in this specification is intended to illustrate one of the features of one embodiment of the present invention, rather than to imply that every embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although certain features can be combined together to illustrate possible system designs, these features can also be used in other, not explicitly described, combinations. Thus, unless otherwise noted, the described combinations are not intended to be limiting.

[0029] In the embodiments shown in the accompanying drawings, directional indications (such as up, down, left, right, front, and rear) used to explain the structure and movement of various components of the present invention are not absolute but relative. These descriptions are applicable when the components are in the positions shown in the accompanying drawings. If the descriptions of the positions of these components are changed, the directional indications will also change accordingly.

[0030] The preferred embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings of this specification.

[0031] See also Figure 1 In conjunction with Figures 2 to 6 As shown in the figure, an 8-MT type contact is provided, which includes an 8-MT type contact socket (hereinafter referred to as the "first contact") 10 and an 8-MT type contact plug (hereinafter referred to as the "second contact") 20 that matches it, and a contact locator (hereinafter referred to as the "locator") 30 that accommodates the rear half of the second contact 20.

[0032] Please continue reading Figure 1 In conjunction with Figure 2 and Figure 3The first contact 10 includes a first MT-type optical fiber ferrule (hereinafter referred to as the "first ferrule") 12 and a first spring 13 housed in a first shell (not marked). The first shell is divided into a front-end connecting portion 11 and a rear-end first tube body 14. The connecting portion 11 has a first base (not marked). A fork-shaped portion 113 extends from the front end of the first base. The periphery formed by the connecting line of the fork-shaped portion 113 is smaller than the periphery of the first base. The fork-shaped portion 113 is formed by a first sliding notch (hereinafter referred to as the "first notch") 111 and a connecting notch 112 in the form of a "cross". The first base is hollowed out forward to form a first cavity (not shown). A first sliding groove (not marked) is symmetrically provided in the first cavity. The first sliding groove is connected to the first notch 111 and is larger than the width of the first notch 111, so that a first blocking wall 114 is formed at the front end of the first cavity. The first ferrule 12 installed in the first cavity relies on the first sliding groove as a track and shifts back and forth under the action of external force; in the A first convex ring / concave ring (not marked) is formed on the inner wall of a cavity mouth and is engaged with the first tube body 14; the first core 12 is installed from the first slide groove and can be divided into a front half (not marked) and a rear half (not marked), the front half is of a size that meets the size of moving forward and backward in the first notch 111 without shifting and has a first front end face 121; the rear half is of a size that meets the size of moving forward and backward in the first slide groove without shifting and has a first rear end face 122; the first tube body 14 has a second cavity 141 for accommodating the first spring 13, and a plurality of first elastic pieces 142 extend forward along the cavity wall of the second cavity 141 at the front end of the first tube body 14, each first elastic piece 142 respectively has a first barb (not marked) protruding toward the periphery. When the first tube body 14 is assembled with the connector 11, the first elastic piece 142 abuts against the cavity wall of the first cavity and hooks the first convex ring / concave ring through the first barb, so that the connector 11 and the first tube body 14 are combined into one. In this example, the rear end of the first tube body 14 has a first tapered portion (not marked), and the first tapered portion extends backward to have a first external threaded portion (not marked). The first external threaded portion forms a first thread hole 1411, and the first thread hole 1411 passes through the second cavity 141. In this embodiment, the first front end face 121 is connected to an optical cable (not shown), and the optical cable passes through the first spring 13 and the second cavity 141 to the first wire hole 1411. When the first tube 14 is combined with the connector 11, the front side of the rear half of the first ferrule 12 will abut against the first blocking wall 114, so that the first ferrule 12 cannot move forward any further. At this time, the front half of the first ferrule 12 will be in the first notch 111; one end of the first spring 13 abuts against the first rear end face 122, and the other end abuts against the bottom surface 1412 of the second cavity 141, so that when the first contact 10 and the second contact 20 are docked, the optical end of the front half of the first ferrule 12 will effectively align with and contact the optical end of the front half of the second ferrule 22 in the first notch 111.

[0033] Please continue reading Figure 1 In conjunction with Figure 4 and Figure 6The second contact 20 includes a second MT-type optical fiber ferrule (hereinafter referred to as the "second ferrule") 22 and a second spring 23 housed in a second housing (not marked). The second housing is divided into a front insertion portion 21 and a rear second tube body 24. A crimping sleeve 25 is screwed onto the tail of the second tube body 24. The insertion portion 21 has a second base (not marked), and a counter-insertion portion 215 matching the fork-shaped portion 113 is extended from the front end of the second base. The counter-insertion portion 215 has a root 213, and the periphery of the root 213 is smaller than the periphery of the second base. The inserting portion 215 has a second sliding notch (hereinafter referred to as the "second notch") 214. The second notch 214 passes through the root 213 backward and ends at the front end of the second base (not marked). The rear end of the second base is hollowed out forward to form a third cavity 211. A second sliding groove 212 is symmetrically provided in the third cavity 211. The second sliding groove 212 is connected to the second notch 214 and is larger than the width of the second notch 214, so that a second blocking wall (not marked) is formed at the front end of the third cavity 211. The second plug 22 installed in the third cavity 211 The second slot 212 is used as a track and moves forward and backward under the action of external force; a second convex ring / concave ring 2111 is formed on the inner wall of the third cavity 211 to engage with the second tube body 24; the second insert 22 is inserted into the second slot 212 and can be divided into a front half (not marked) and a rear half (not marked), the front half is of a size that meets the size of moving forward and backward in the second notch 214 without shifting and has a second front end face 221; the rear half is of a size that meets the size of moving forward and backward in the second slot 212 without shifting The second tube body 24 is small and has a second rear end face 222; the second tube body 24 has a fourth cavity (not labeled) for accommodating the second spring 23, and a plurality of second elastic pieces 241 extend forward along the wall of the fourth cavity from the front end of the second tube body 24. Each second elastic piece 241 has a second barb (not labeled) protruding toward the periphery. When the second tube body 24 is assembled with the connecting portion 21, the second elastic piece 241 abuts against the wall of the third cavity 211 and hooks the second convex / concave ring 2111 via the second barb, thereby integrating the inserting portion 21 and the second tube body 24. In this example, the rear end of the second tube body 24 has a second tapered portion (not labeled), which extends rearwardly to form a second externally threaded portion 242. The second externally threaded portion 242 is formed with a second thread hole 243, which passes through the fourth cavity.In this embodiment, the second front end face 221 is connected to the optical cable (not shown), and the optical cable passes through the second spring 23 and the fourth cavity to the second wire hole 243. When the second tube body 24 is combined with the insertion portion 21, the front side of the rear half of the second ferrule 22 will abut against the second blocking wall, so that the second ferrule 22 cannot continue to move forward. At this time, the front half of the second ferrule 22 will be in the second notch 214; one end of the second spring 23 abuts the second rear end face 222, and the other end abuts the bottom surface of the fourth cavity (not marked), so that when the second contact 20 is docked and inserted into the first contact 10, the front half of the second ferrule 22 The optical end will effectively align with and contact the optical end of the front half of the first ferrule 12 in the second notch 214; the wire pressing sleeve 25 is a tube sleeve formed of a flexible material and has a second internal threaded portion (not marked) screwed to the second external threaded portion 242 and a wire pressing portion 251 formed in a tapered form, the wire pressing portion 251 has a wire pressing hole 252 that communicates with the second internal threaded portion, the optical cable passing through the second wire hole 243 passes through the second internal threaded portion to the wire pressing hole 252, and the wall of the wire pressing hole 252 is provided with strip ribs 253 in a surrounding form, and the optical cable is clamped in the wire pressing hole 252 under the action of the strip ribs 253 and is difficult to shift.

[0034] Please continue reading Figure 1 In conjunction with Figure 5 and Figure 6 The locator 30 is a tube sleeve, which is sleeved on the outer periphery of the wire sleeve 25 and has a tube body 31 and a tube cover 32, wherein: the tube body 31 has a basic portion 311, the basic portion 311 has a receiving cavity 314, a third external thread portion 312 is provided at the rear section of the basic portion 311, the third external thread portion 312 has a third wire hole 315 communicating with the receiving cavity 314, and a circular ring portion 313 is raised on the outer periphery of the basic portion near the third external thread portion 312; the tube cover 32 has a screw connection portion 321 and a cover top 322, A slope 323 is formed between the top of the cover 322 in a contracted form, so that the diameter of the top of the cover 322 is smaller than the diameter of the screwing portion 32, wherein: the screwing portion 32 has a third internal thread portion 324 that is screwed together with the third external thread portion 312, and the top of the cover 322 has a fourth wire hole 325. The aperture of the fourth wire hole 325 is smaller than that of the third wire hole 315 and is connected with the third internal thread portion 324, so that the optical cable extending from the wire pressing hole 252 passes through the accommodating cavity 314 to the fourth wire hole 325 and extends to the outside.

[0035] See also Figure 1 、 Figure 3 、 Figure 6 In conjunction with Figure 7 and Figure 8 , Figure 7 An electrical connector is provided. Figure 1In this embodiment, the electrical connector includes a female connector (hereinafter referred to as "female") 40 and a male connector (hereinafter referred to as "male") 50 that matches the female connector 40, wherein:

[0036] The female connector 40 is multifunctional. Since it is not a key design feature of the present invention, it will not be described in detail here. However, how the first contact 10 is coupled to the female connector 40 is a key design feature of the present invention. In this example, the female connector 40 comprises a connector housing 41, with first ears 42 provided on opposite sides of the connector housing 41, forming first and second female connectors A1 and A2, respectively. The first and second female connectors A1 and A2 are located adjacent to the first ears 42. Since the first and second female connectors A1 and A2 are conventional, they will not be described here. In this example, a first space 411 is formed in the connector housing 41 between the first and second female seats A1 and A2, and the first contact 10 is positioned in the first space 411 by a first fixing member (not marked) (that is, the first contact 10 is formed between the first and second female seats A1 and A2), wherein: the first fixing member (not marked) includes a first positioning cover 412, a first rubber member 413 and a first bridge plate 414, and the first rubber member 413 is firmly fixed to the bottom of the first space 411 by combining with the connector housing 41, and the first rubber member 413 has a first The first positioning cover 412 is based on the shape of the first contact 10 and has front and rear ports and a number of elastic positioning claws (hereinafter referred to as "positioning claws") 4121. The rear port of the first positioning cover 412 is fixed by being buried in the first rubber member 413 with the first exit hole 4131 as the center. The first bridge plate 414 has a hole (but not limited to) that covers the periphery of the front port of the first positioning cover 412 and is overlapped with the first and second female sockets A1 and A2 through the ends of the first bridge plate 414, thereby firmly integrating the first positioning cover 412 and the plug housing 41. The first contact 10 is installed in the first positioning cover 412 and is firmly supported by the positioning claws 4121, so that the first contact 10 is fixed to the female socket 40.

[0037] The male connector 50 is a multifunctional connector that mates with the female connector 40. Since this connector 50 is not a key design feature of the present invention, we will not discuss it in detail here. However, how the second contact 20 is incorporated into the male connector 50 is a key design feature of the present invention. In this example, the male connector 50 comprises an insert housing 51, with second ears 52 symmetrically disposed on opposite sides of the insert housing 51. Near the second ears 52, the insert housing 51 receives and together form first and second male connectors B1 and B2. Since the first and second male connectors B1 and B2 are conventional, we will not discuss them here. In this example, a second space 511 corresponding to the first space 411 is formed in the insertion housing 51 between the first and second male plugs B1 and B2, and the second contact 20 is positioned in the second space 511 by a second fixing member (not marked) (that is, the second contact 20 is formed between the first and second male plugs B1 and B2), wherein: the second fixing member (not marked) includes a second positioning cover 512, a second rubber member 513 and a second bridge plate 514, and the second rubber member 513 is firmly fixed to the bottom of the second space 511 by combining with the insertion housing 51, and the second rubber member 51 3 has a second exit hole (not labeled). The second positioning cover 512 is based on the shape of the second contact 20 and has front and rear ports and a plurality of elastic positioning claws (hereinafter referred to as "positioning claws") 5121. The rear port of the second positioning cover 512 is embedded in the second exit hole 4131 and fixed. The second bridge plate 514 has a hole (but not limited to) that covers the outer periphery of the front port of the second positioning cover 512. The second bridge plate 514 is connected to the first and second male connectors B1 and B2 through the ends of the second bridge plate 514, thereby firmly positioning the second positioning cover 512 relative to the first positioning cover 412 and integrating it with the insertion housing 51. The second contact 20 and the positioner 30 are installed together in the second positioning cover 512 and supported by the positioning claws 5121. The front end of the positioner 30 is clamped by the second exit hole 4131, so that the second contact 20 and the positioner 30 are fixed together in the male connector 50.

[0038] In this embodiment, when the female connector 40 and the male connector 50 are mated, the first and second contacts 10 and 20 are also mated and connected, thereby simultaneously connecting the first female connector A1 and the first male connector B1, and the second female connector A2 and the second male connector B2. In this example, to strengthen the mating effect of the female connector 40 and the male connector 50, the female connector 40 and the male connector 50 are provided with ear holes in the first and second ear portions 42 and 52, respectively, and then fixed with screws.

Claims

1. An 8-MT contact, comprising a first contact and a second contact matching the first contact, wherein the first contact comprises a first ferrule and a first spring housed in a first housing, the first housing comprising a connector portion and a first tube, characterized in that: The connector has a first notch and a connecting notch arranged crosswise with the first notch. A first cavity is hollowed out forward at the rear end of the connector. A first chute is symmetrically provided in the first cavity. The first chute is connected to the first notch and is larger than the width of the first notch. The first ferrule is dynamically located in the first notch and the first chute along the first chute. A first convex ring / concave ring is provided near the opening of the first cavity. The first tube body has a second cavity and a first spring sheet with a first barb extending from its front end. The first spring is located in the second cavity and its front end abuts against the first ferrule. The connector and the first tube body are fixed together by the interference of the first convex ring / concave ring and the first barb. The first tube body has a first tapered portion at a rear end relative to the front end, the first tapered portion extends rearward to form a first external threaded portion, the first external threaded portion has a first thread hole, and the first thread hole passes through the second cavity; The first optical cable is connected to the first ferrule and passes through the first spring and the second cavity to the first wire hole; The second contact comprises a second ferrule and a second spring housed in a second housing, the second housing being divided into an insertion portion and a second tube body, a crimping sleeve being screwed onto the tail of the second tube body, wherein: the insertion portion comprises a mating portion and a third cavity, the mating portion matches the mating notch and has a second notch, the second notch is at the front end of the third cavity, a second slide groove is symmetrically provided in the third cavity, the second slide groove is connected to the second notch and is larger than the width of the second notch, the second ferrule is dynamically located in the second notch and the third cavity along the second slide groove, the third cavity has a second convex ring / concave ring, and the second convex ring / concave ring is located near the opening of the third cavity; The second tube body has a second spring piece, a fourth cavity and a second external threaded portion, the second spring piece has a second barb, the fourth cavity accommodates a second spring, the front end of the second spring abuts the second ferrule, the second external threaded portion has a second wire hole, the insertion portion and the second tube body are stabilized by the interference of the second convex ring / concave ring and the second barb; the wire sleeve has a second internal threaded portion and a wire hole, the second internal threaded portion is screwed to the second external threaded portion, so that the second wire hole and the wire hole are connected, and the wire hole is distributed with strip ribs; It further includes a locator and a second optical cable, wherein: the locator is sleeved on the outer periphery of the wire pressing sleeve and has a tube body and a tube cover, the tube body has a basic part, the basic part has a receiving cavity, a third external threaded part is provided at the rear section of the basic part, the third external threaded part has a third wire hole communicating with the receiving cavity, and a circular ring part is raised on the outer periphery of the basic part near the third external threaded part; the tube cover has a screwing part and a cover top, a slope is formed in a contraction form between the screwing part and the cover top, so that the diameter of the cover top is smaller than the diameter of the screwing part, the screwing part has a third internal threaded part, the third internal threaded part is screwed with the third external threaded part, so that the tube body and the tube cover are screwed together; the second optical cable is connected to the second core and passes through the second spring through the second wire hole and the wire pressing hole and is fixed with strip ribs distributed through the wire pressing hole.

2. An electrical connector assembled with the 8-MT contact according to claim 1, characterized in that: The electrical connector includes a female socket and a male head matching the female socket, wherein: the female socket includes a plug-in shell and first and second female sockets contained in the plug-in shell, a first space is formed between the first and second female sockets, the first space is provided with a first fixing member, and the first contact member is positioned in the plug-in shell by the first fixing member; the male head includes an insert shell matching the plug-in shell and first and second male heads contained in the insert shell, the first male head matches the first female socket, the second male head matches the second female socket, and a second space corresponding to the first space is formed between the first male head and the second male head, the second space is provided with a second fixing member corresponding to the first fixing member, and the second contact member is positioned in the insert shell by the second fixing member, so that the second contact member corresponds to the first contact member.

3. The electrical connector according to claim 2, wherein: The first fixing member includes a first positioning cover, a first rubber member and a first bridging plate. The first rubber member is fixed to the bottom of the first space by combining with the connector shell and has a first outlet. The first positioning cover is equivalent to the appearance of the first contact member and has front and rear ports and positioning claws. The rear port of the first positioning cover is buried in the first rubber member with the first outlet as the center. The front port of the first positioning cover is bridged between the first female seat and the second female seat through the first bridging plate. The first contact member is arranged in the first positioning cover and is supported by the positioning claw.

4. The electrical connector according to claim 3, wherein: The second fixing member includes a second positioning cover, a second rubber member and a second bridging plate. The second rubber member is fixed to the bottom of the second space by combining with the insert housing and has a second outlet. The second positioning cover is equivalent to the appearance of the second contact member and has front and rear ports and positioning claws. The rear port of the second positioning cover is fixed in the second rubber member in the form of partially embedded in the second outlet. The front port of the second positioning cover is bridged between the first male head and the second male head through the second bridging plate. The second contact member is arranged in the second positioning cover and is supported by the positioning claw. At the same time, the locator sleeved on the second contact member is clamped by the second outlet through the front end of the locator and fixed to the male head.

5. The electrical connector according to claim 4, wherein: The female socket has a first ear, and the male connector has a second ear corresponding to the first ear. Screw holes are respectively provided in the first and second ears. When the female socket is plugged into the male connector, the first and second contact members are also plugged into and connected. The screw holes are tightened by screws, so that the female socket and the male connector are firmly integrated.

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