CN116203686A - Photoelectric hybrid connector - Google Patents

Abstract

The invention relates to the technical field of optical fiber communication, and provides a photoelectric hybrid connector. The photoelectric hybrid connector comprises a body, a core inserting assembly and at least two electric terminals, wherein the core inserting assembly is arranged at the center of the section of the body, the at least two electric terminals are symmetrically distributed on the section of the body about the core inserting assembly, the electric terminals are reasonably distributed with the core inserting assembly, the stress generated in the plugging process of the photoelectric hybrid connector can be reduced, and the influence of the electric terminals on the coupling precision of an optical channel of the optical fiber connector in the plugging process is reduced. Meanwhile, the photoelectric hybrid connector realizes photoelectric integration in a single optical port space, and optical signals and electric signals can be transmitted through one photoelectric hybrid connector; meanwhile, the photoelectric hybrid connector is small in size, and can be connected with the adapter through one-time plug-in, so that the complexity of plug-in operation is reduced.

Description

Photoelectric hybrid connector

Technical Field

The invention relates to the technical field of optical fiber communication, in particular to an optical-electrical hybrid connector.

Background

The optical fiber communication mode is a communication mode which uses light waves as an information carrier and uses optical fibers as a transmission medium. Devices such as connectors, optical modules, adapters and the like are generally involved in the field of optical communication technology.

The connector is an optical passive device for realizing connection between optical fibers, and has the functions of movably connecting the optical fibers with the optical fibers, the optical fibers with the active devices, the optical fibers with other passive devices and the optical fibers with the instrument; the optical module is used as an important optical signal interface device in optical fiber communication and is provided with an optical interface and an electrical interface, wherein the optical interface is connected with an optical fiber to transmit optical signals, and the electrical interface is connected with external communication terminal equipment; the adapter is used for switching the two connectors.

Taking the electrical energy supplied to the terminal device as an example, at present, the operation of the optical communication device itself needs power supply, especially in 5G application, a large number of plugging photoelectric circuits exist in the device represented by the 5G base station, and because the photoelectric separation arrangement causes the number of connectors to be large and the connectors to be divided into two types of photoelectricity, the connectors need to be paired correctly one by one, which causes complicated operation in the installation and maintenance process and is easy to cause plugging errors.

In order to connect these composite cables, one solution in the prior art is that the optical connector and the electrical connector are designed independently, and the optical connector and the optical adapter are spliced and coupled to realize optical signal docking; the electric connector and the electric adapter are connected in a plugging mode to realize electric signal coupling butt joint. However, the use of separate optical and electrical connectors requires two plugging operations to complete the optical and electrical connection and transmission, which is not only relatively complex to operate, but also requires two interfaces, and the device is relatively bulky.

Another solution in the prior art is that the electrical connector is integrated between a pair of optical connectors, and the optical connectors and the electrical connectors can be plugged into and pulled out of the adapter through one plugging operation; however, in this solution, two optical connectors must be used at the same time, and an electrical connector is provided in the middle of the two optical connectors, which cannot be used when the receptacle has only one optical connector space (for example, a single-fiber bidirectional type of active module) during actual use.

Yet another solution is to use an opto-electronic hybrid connector, such as one based on SC connector patent (patent number CN201911344083.5, connector assembly and opto-electronic hybrid connector); however, in the scheme, the electric terminal part is exposed outside, and in the actual use process, a certain potential shock hazard exists, so that the problem of human-based safety exists. On the other hand, the precision of the optical fiber connector in the butt joint process is very high, the coupling of micron-level is basically required, and the coupling efficiency and the coupling precision of the optical fiber can be influenced by any stress in the non-optical axis direction in the coupling butt joint process; the electrical terminals of the existing photoelectric hybrid connector are asymmetric in the distribution of the optical fiber coupling structure of the optical fiber connector, so that the coupling precision of the optical channel of the optical fiber connector is affected by the insertion stress in the insertion and extraction process of the electrical terminals.

In view of this, overcoming the drawbacks of the prior art is a problem to be solved in the art.

Disclosure of Invention

The invention aims to solve the technical problem of providing a photoelectric hybrid connector, which solves the problem that in the prior art, the coupling precision of an optical channel of an optical fiber connector is affected by the insertion and extraction stress in the process of inserting and extracting an electric terminal.

The invention adopts the following technical scheme:

in order to solve the foregoing problems, the present invention provides an optoelectronic hybrid connector, comprising: body 1, lock pin assembly 2 and at least two electric terminals 3, at least two electric terminals 3 set up the inside of body 1, wherein:

the ferrule assembly 2 is arranged at the center of the section of the body 1 on the section layout of the body 1, and at least two electric terminals 3 are symmetrically distributed about the ferrule assembly 2 on the section of the body 1;

the ferrule assembly 2 is used for coupling optical signals;

the electrical terminals 3 are used for coupling electrical signals.

Further, the photoelectric hybrid connector further comprises an inner sleeve 4, wherein the front end of the inner sleeve 4 is accommodated in the body 1, and the inner sleeve 4 is in clamping connection with the body 1;

the inner sleeve 4 is provided with a mounting hole 41, and the tail end of the ferrule assembly 2 is accommodated in the mounting hole 41; the surface of the inner sleeve 4 is also provided with at least two first mounting grooves 42, at least two first mounting grooves 42 are symmetrically distributed relative to the center of the mounting hole 41, and the rear ends of the electric terminals 3 are arranged on the corresponding first mounting grooves 42.

Further, at least two second mounting grooves 11 are arranged on the inner wall of the body 1, and the at least two second mounting grooves 11 are symmetrically distributed relative to the center point of the section of the body 1;

each of the second mounting grooves 11 is disposed in alignment with the corresponding first mounting groove 42, and the front end of the electrical terminal 3 axially protrudes from the first mounting groove 42 and is disposed in the second mounting groove 11.

Further, the body 1 is provided with a first accommodating chamber 12, a second accommodating chamber 13 and a third accommodating chamber 14, wherein:

the second accommodation chamber 13 is located between the first accommodation chamber 12 and the third accommodation chamber 14;

the second mounting groove 11 is arranged on the side wall corresponding to the first accommodating cavity 12 and the second accommodating cavity 13, and the second mounting groove 11 is communicated with the first accommodating cavity 12;

a limiting ring 15 is arranged between the second accommodating cavity 13 and the side wall of the body 1, and the second accommodating cavity 13 and the second mounting groove 11 are separated by the limiting ring 15 so as to avoid the contact between the electric terminal 3 and the ferrule assembly 2.

Further, a first buckling hole 16 is formed in the side wall of the third accommodating cavity 14, and a first buckle 43 is formed in the inner sleeve 4;

the front end of the inner sleeve 4 is accommodated in the third accommodating cavity 14, and the first buckle 43 is engaged with the first buckling hole 16, so that the inner sleeve 4 and the third accommodating cavity 14 are in engaged connection.

Further, each two electric terminals 3 are combined to form an electric terminal assembly, and a connecting block 31 is arranged between the two electric terminals 3;

the surface of the inner sleeve 4 is provided with at least one clamping block 44 and at least one mounting position 45, the mounting position 45 is arranged in a direction away from the extension of the first mounting grooves 42, the clamping block 44 is arranged between the two first mounting grooves 42 positioned on the same side, the connecting block 31 is arranged on the mounting position 45, and the connecting block 31 is abutted against the clamping block 44.

Further, at least two cards 46 are provided on the surface of the inner sleeve 4, each clamping block 44 is provided with two cards 46 in a matching manner, the two cards 46 are provided on two opposite sides of the clamping block 44, and a corresponding first mounting groove 42 is provided between the card 46 and the clamping block 44.

Further, the photoelectric hybrid connector further comprises a spring 5, a limiting block 21 is arranged on the inserting core, a spring seat 47 is arranged in the inner sleeve 4, the spring 5 is sleeved on the inserting core, one end of the spring 5 is abutted against the limiting block 21, and the other end of the spring 5 is abutted against the spring seat 47.

Further, the opto-electric hybrid connector further comprises a cartridge 6 and a cover plate 7, wherein:

the second buckle 61 is arranged on the clamping seat 6, the second buckling hole 71 is arranged on the cover plate 7, and the second buckle 61 is buckled with the second buckling hole 71, so that the clamping seat 6 is in buckling connection with the cover plate 7;

the tail part of the clamping seat 6 is provided with a through hole 62 which is used as a channel for a cable to enter the clamping seat 6;

the clamping seat 6 and the cover plate 7 are hollow, are used for accommodating the tail end of the inner sleeve 4, and provide space for connecting the ferrule assembly 2 and the electric terminal 3 with a cable.

Further, the opto-electrical hybrid connector comprises four of the electrical terminals 3, the four electrical terminals 3 being symmetrically distributed about the ferrule assembly 2 in a cross-section of the body 1.

In the invention, the photoelectric hybrid connector comprises a body 1, a core inserting assembly 2 and at least two electric terminals 3, wherein the core inserting assembly 2 is arranged at the center of the section of the body 1, the at least two electric terminals 3 are symmetrically distributed on the section of the body 1 about the core inserting assembly 2, the electric terminals 3 and the core inserting assembly 2 are reasonably distributed in structure, so that the stress generated in the plugging process of the photoelectric hybrid connector can be reduced, and the influence of the electric terminals 3 on the coupling precision of an optical channel of the optical fiber connector in the plugging process is reduced.

Furthermore, the photoelectric hybrid connector provided by the invention realizes photoelectric integration in a single optical port space, the ferrule assembly 2 is used for coupling optical signals, the electric terminal 3 is used for coupling electric signals, and the transmission of the optical signals and the electric signals can be realized through one photoelectric hybrid connector; the photoelectric hybrid connector is small in size, can be connected with the adapter through one-time plug-in, and reduces the complexity of plug-in operation.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the embodiments of the present invention will be briefly described below. It is evident that the drawings described below are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic exploded view of a body, ferrule assembly and electrical terminal provided in an embodiment of the present invention;

fig. 2 is a schematic side view of a body of an optoelectronic hybrid connector according to an embodiment of the present invention;

FIG. 3 is a schematic view of the H-H cross-section structure of the body of FIG. 2 according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of the positional relationship between an electrical terminal and a ferrule provided by an embodiment of the present invention;

fig. 5 is a schematic exploded view of an optoelectronic hybrid connector according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an inner sleeve of an optoelectronic hybrid connector according to an embodiment of the present invention;

FIG. 7 is a schematic view of the combination of an inner housing, a ferrule and an electrical terminal provided by an embodiment of the present invention;

FIG. 8 is a schematic view of a body, an inner housing, a ferrule assembly, and an electrical terminal combined together according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a body of an optoelectronic hybrid connector according to an embodiment of the present invention;

FIG. 10 is a schematic view of the cross-sectional F-F structure of FIG. 2 according to an embodiment of the present invention;

FIG. 11 is a schematic cross-sectional view of FIG. 8 provided by an embodiment of the present invention;

fig. 12 is a schematic structural view of an electrical terminal of an optoelectronic hybrid connector according to an embodiment of the present invention;

fig. 13 is a schematic structural view of another electrical terminal provided in an embodiment of the present invention;

fig. 14 is a schematic view of a combination structure of an inner sleeve and the electrical terminal of fig. 13 according to an embodiment of the present invention;

FIG. 15 is a schematic view of a ferrule assembly and spring provided in an embodiment of the present invention;

FIG. 16 is a schematic cross-sectional view of an inner housing of an electro-optical hybrid connector according to an embodiment of the present invention;

fig. 17 is a schematic structural diagram of a card socket and a cover plate of an optoelectronic hybrid connector according to an embodiment of the present invention;

fig. 18 is a schematic view of another structure of a card holder of an optoelectronic hybrid connector according to an embodiment of the present invention;

fig. 19 is a schematic structural diagram of an optoelectronic hybrid connector according to an embodiment of the present invention;

fig. 20 is a schematic structural view of another photoelectric hybrid connector according to an embodiment of the present invention;

FIG. 21 is a schematic view of another electrical terminal and ferrule according to an embodiment of the present invention;

FIG. 22 is a schematic illustration of the connection of an opto-electronic hybrid connector within an opto-electronic hybrid adapter provided by an embodiment of the present invention;

fig. 23 is a schematic view of the interface between the internal electrical terminals and the ferrule assembly of fig. 22 provided in accordance with an embodiment of the present invention.

Wherein, the reference numerals are as follows: a body 1; a second mounting groove 11; a first accommodation chamber 12; a second accommodation chamber 13; a third accommodation chamber 14; a stop collar 15; a first button hole 16; a first spring 17; a ferrule assembly 2; a stopper 21; an electrical terminal 3; a connection block 31; an inner sleeve 4; a mounting hole 41; a first mounting groove 42; a first catch 43; a positioning block 44; a mounting location 45; a card 46; a spring seat 47; a spring 5; a clamping seat 6; a second catch 61; a through hole 62; a second elastic piece 63; a cover plate 7; a second button hole 71; a photoelectric mixing adapter 8; a photovoltaic hybrid connector 9.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

In the description of the present invention, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc. refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

Example 1:

embodiment 1 of the present invention provides an optoelectronic hybrid connector, with reference to fig. 1 to 4, including: a body 1, a ferrule assembly 2 and at least two electrical terminals 3, at least two of said electrical terminals 3 being arranged inside said body 1.

The ferrule assembly 2 is arranged in the center of the cross section of the body 1 on the cross section layout of the body 1, and at least two of the electrical terminals 3 are symmetrically distributed about the ferrule assembly on the cross section of the body 1. In actual use, the ferrule assembly 2 is used to couple optical signals; the electrical terminals 3 are used for coupling electrical signals.

Specifically, in connection with fig. 2 to 4, at least two of the electrical terminals 3 are arranged centrally and symmetrically with respect to the central point of the ferrule assembly 2, in fig. 3, it is shown that the electrical terminals are centrally and symmetrically with respect to the central point of the cross section of the body 1, and when two electrical terminals 3 are required to be arranged, one is arranged at the point a and the point C, and the other is arranged at the point B and the point D, so as to ensure that the electrical terminals 3 are centrally and symmetrically with respect to the central point of the cross section of the body 1; when four electrical terminals 3 are required, they may be provided at A, B, C and point D to ensure that the four electrical terminals 3 are centrosymmetric.

Fig. 4 is a schematic view showing the arrangement of the electrical terminals 3 and the ferrule assembly 2 on the cross section of the body 1, when two electrical terminals 3 are required to be provided, the electrical terminals may be arranged as shown in (a) and (b) in fig. 4, when four electrical terminals 3 are required to be provided, the electrical terminals may be arranged as shown in (c) in fig. 4, when six electrical terminals 3 are required to be provided, the electrical terminals may be arranged as shown in (d) in fig. 4, and in summary, the electrical terminals 3 should be arranged in a central symmetry with respect to the ferrule assembly 2, no matter how many electrical terminals 3 are required to be provided.

At this time, any one of the cutting lines is made through the center point to divide the body 1 into two parts, and the number of the electric terminals 3 in the two parts is identical, which means that when the photoelectric hybrid connector is plugged and unplugged, the stress of the two parts in the body 1 is basically identical, so as to reduce the influence of the stress generated by the electric terminals 3 during plugging and unplugging on the coupling precision of the ferrule assembly 2. When the electrical terminals 3 are arranged on the side (for example, two electrical terminals are arranged at the point a and the point B), the number of the electrical terminals 3 in the two parts is inevitably inconsistent, the electrical terminals 3 are arranged on the side of the ferrule assembly 2, and when the photoelectric hybrid connector is plugged or pulled out, the body 1 is eccentrically stressed, so that the ferrule assembly 2 is eccentrically stressed, and the coupling precision of the ferrule assembly 2 is reduced.

In the embodiment of the invention, the electrical terminal 3 and the ferrule assembly 2 have reasonable structural distribution, so that the stress generated in the plugging process of the photoelectric hybrid connector can be reduced, and the influence of the electrical terminal 3 on the coupling precision of the optical channel of the optical fiber connector in the plugging process is reduced.

The photoelectric hybrid connector provided by the embodiment of the invention realizes photoelectric integration in a single optical port space, and can realize transmission of optical signals and electric signals through one photoelectric hybrid connector; the photoelectric hybrid connector is small in size, can be connected with the adapter through one-time plug-in, and reduces the complexity of plug-in operation.

In order to fix the ferrule assembly 2 and the electrical terminal 3, referring to fig. 5 to 7, the optical-electrical hybrid connector further includes an inner sleeve 4, wherein the front end of the inner sleeve 4 is accommodated in the body 1, and the inner sleeve 4 is in snap connection with the body 1.

As shown in fig. 6 and 7, the inner sleeve 4 is provided with a mounting hole 41, and the tail end of the ferrule assembly 2 is accommodated in the mounting hole 41; the surface of the inner sleeve 4 is also provided with at least two first mounting grooves 42, at least two first mounting grooves 42 are symmetrically distributed relative to the center of the mounting hole 41, and the rear ends of the electric terminals 3 are arranged on the corresponding first mounting grooves 42.

The front end of the mounting hole 41 is larger than the ferrule assembly 2, and the rear end of the mounting hole 41 is adapted to the tail of the ferrule assembly 2, so as to limit the ferrule assembly 2.

As shown in fig. 8, there is shown a structural diagram of a body 1, a ferrule assembly 2, an electrical terminal 3 and an inner sleeve 4 assembled together, wherein, when the inner sleeve 4 is disposed on the body 1, a rear end of the electrical terminal 3 is located on a surface of the inner sleeve 4 and outside the body 1, a middle portion of the electrical terminal 3 is located between the inner sleeve 4 and the body 1, and a front end of the electrical terminal 3 is located in the body 1, which is convenient for replacing the corresponding electrical terminal 3 or the ferrule assembly 2 when the electrical and optical hybrid connector fails, except for effectively fixing the electrical terminal 3 and the ferrule assembly 2.

For further fixing the electrical terminal 3, referring to fig. 3 and 9, at least two second mounting grooves 11 are provided on the inner wall of the body 1, and at least two second mounting grooves 11 are symmetrically distributed with respect to the center point of the cross section of the body 1. Each of the second mounting grooves 11 is disposed in alignment with the corresponding first mounting groove 42, and the front end of the electrical terminal 3 axially protrudes from the first mounting groove 42 and is disposed in the second mounting groove 11.

Wherein, in connection with fig. 3, the cross section of the body 1 refers to the effective cross section in which the electrical terminals 3 are arranged. Meanwhile, the front end of the electric terminal 3 is fixed in the second mounting groove 11, and the electric terminal 3 does not protrude out of the body 1, so as to avoid the electric terminal 3 being exposed outside, and reduce the probability of damage to the user caused by the electric terminal 3 in the use process.

In an alternative, the number of the second mounting grooves 11 and the first mounting grooves 42 are identical, and the number of the second mounting grooves 11 and the first mounting grooves 42 is equal to the number of the electric terminals 3.

In another alternative, the number of the second mounting grooves 11 and the first mounting grooves 42 is greater than the number of the electrical terminals 3, and the surplus second mounting grooves 11 and the first mounting grooves 42 are used as expansion channels for mounting indication lamps or control signals.

In order to make the structural arrangement of the body 1 more reasonable so as to accommodate the ferrule assembly 2, the body 1 and the electrical terminal 3, in combination with fig. 9 to 11, the body 1 is provided with a first accommodating cavity 12, a second accommodating cavity 13 and a third accommodating cavity 14, wherein:

the second accommodation chamber 13 is located between the first accommodation chamber 12 and the third accommodation chamber 14; the second mounting groove 11 is disposed on a side wall corresponding to the first accommodating cavity 12 and the second accommodating cavity 13, and the second mounting groove 11 is communicated with the first accommodating cavity 12.

Wherein the third accommodating chamber 14 is used for accommodating the front end of the inner sleeve 4; the second accommodating cavity 13 is used for accommodating the ferrule assembly 2 and limiting the ferrule assembly 2; the first receiving cavity 12 is configured to receive the ferrule assembly 2 and the electrical terminal 3 in the second mounting groove 11. The ferrule assembly 2 passes through the second accommodating cavity 13 and the first accommodating cavity 12, and the end part of the ferrule assembly 2 protrudes out of the body 1, so that the ferrule assembly 2 and other devices are connected.

Furthermore, the second mounting groove 11 communicates with the first accommodation chamber 12 in the sense that the entire cross-sectional area of the body 1 can be reduced in design while accommodating the electrical terminal 3 in the second mounting groove. Since the first accommodating chamber 12 needs to be connected with other devices and accommodate the other devices, the volume of the first accommodating chamber 12 is determined, if the second mounting groove 11 is not communicated with the first accommodating chamber 12, an additional physical side wall is needed between the second mounting groove 11 and the first accommodating chamber 12, and the cross-sectional area of the body 1 needs to be enlarged, so that the design that the second mounting groove 11 is communicated with the first accommodating chamber 12 can reduce the cross-sectional area of the body 1 on the design level and reduce the volume of the body 1.

A limiting ring 15 is arranged between the second accommodating cavity 13 and the side wall of the body 1, and the second accommodating cavity 13 and the second mounting groove 11 are separated by the limiting ring 15 so as to avoid the contact between the electric terminal 3 and the ferrule assembly 2.

The meaning of avoiding the contact between the electrical terminal 3 and the ferrule assembly 2 is to avoid the interference of the electrical terminal 3 on the optical signal transmission of the ferrule assembly 2. In addition, the space between the limiting rings 15 is the second accommodating cavity 13, and the ferrule assembly 2 abuts against the second accommodating cavity 13, so as to prevent the ferrule assembly 2 from being separated from the body 1.

In order to fix the inner sleeve 4 on the body 1, referring to fig. 6, 9 and 10, a first fastening hole 16 is provided on a side wall of the third accommodating cavity 14, and a first fastener 43 (as shown in fig. 5) is provided on the inner sleeve 4; the front end of the inner sleeve 4 is accommodated in the third accommodating cavity 14, and the first buckle 43 is engaged with the first buckling hole 16, so that the inner sleeve 4 and the third accommodating cavity 14 are in engaged connection.

The two opposite side walls of the inner sleeve 4 are provided with two first buckles 43, and two corresponding side walls of the body 1 are provided with two first buckling holes 16, so that the inner sleeve 4 is connected to the body 1 in a clamping manner, and compared with other connection modes, the body 1 and the inner sleeve 4 can be conveniently assembled and disassembled in a clamping manner, and the two first buckles 43 and the two first buckling holes 16 are adopted, so that a good fixing effect can be achieved, and meanwhile, the arrangement of a connection structure between the inner sleeve 4 and the body 1 is simplified.

In order to simplify the connection of the electrical terminals 3 to the cable, in connection with fig. 12, in the present embodiment, each two electrical terminals 3 are joined to form an electrical terminal assembly, between which two electrical terminals 3 a connection block 31 is arranged.

Specifically, the connection block 31 is disposed at a middle portion of the tail ends of the two electric terminals 3 to combine the two electric terminals 3 to form the electric terminal assembly. At this time, the connection between the connection block 31 and the cable is performed, so that each electrical terminal 3 is prevented from being connected to the cable independently, and the electrical terminal 3 can be fixed better by the matching structure of the connection block 31 and the inner sleeve 4.

In order to match the electrical terminal assembly formed by combining two electrical terminals 3, in this embodiment, at least one clamping block 44 and at least one mounting position 45 are disposed on the surface of the inner sleeve 4, the mounting position 45 is disposed in a direction extending away from the first mounting groove 42, the clamping block 44 is disposed between the two first mounting grooves 42 located on the same side, the connection block 31 is disposed on the mounting position 45, and the connection block 31 abuts against the clamping block 44.

Wherein the mounting locations 45 and the connection blocks 31 are shaped to conform and the mounting locations 45 and the first mounting slots 42 are in communication to receive the electrical terminal assemblies.

Referring to fig. 6, in order to guide the electrical terminal 3 when the electrical terminal 3 is mounted, at least two cards 46 are disposed on the surface of the inner sleeve 4, each of the clamping blocks 44 is provided with two cards 46 in a matching manner, the two cards 46 are disposed on two opposite sides of the clamping block 44, and a corresponding first mounting groove 42 is disposed between the card 46 and the clamping block 44.

When the electrical terminal 3 is mounted, the two electrical terminals 3 of the electrical terminal assembly need to be aligned to the first mounting grooves 42 on two sides of the clamping block 44, the card 46 and the clamping block 44 can play a guiding role, and when the electrical terminal 3 is accommodated in the first mounting groove 42, the card 46 and the clamping block 44 can also limit the electrical terminal 3.

In connection with the electrical terminal configuration shown in fig. 12, in order to ensure symmetry, the opto-electric hybrid connector may include 2 electrical terminal assemblies (i.e., including 4 electrical terminals), wherein 4 first mounting grooves 42 are correspondingly provided on the inner housing, each two first mounting grooves 42 correspond to one electrical terminal assembly, a specific assembly configuration is shown in fig. 7, correspondingly, 4 second mounting grooves 11 are correspondingly provided on the body 1, each two second mounting grooves 11 correspond to one electrical terminal assembly, and a specific assembly configuration is shown in fig. 7.

When the optoelectric hybrid connector comprises two electrical terminals 3, as shown in fig. 13, the two electrical terminals 3 are independently disposed, and in order to ensure that the electrical terminals 3 are centered with respect to the ferrule assembly, as shown in fig. 14, the two electrical terminals 3 are disposed at diagonal first mounting grooves 42 on the inner housing.

In an alternative embodiment, in combination with fig. 13, there is no connection block 31 between the electrical terminals 3, and the electrical terminals 3 may be separately disposed so as to dispose the electrical terminals 3 in the optoelectric hybrid connector in a more diverse manner, and in addition, structures such as a retaining block and a mounting groove may not be disposed so as to simplify the structure of the optoelectric hybrid connector. Referring to fig. 14, an assembled structure of the electrical terminal 3 and the inner housing 4 is shown.

In this embodiment, in order to make the front end of the electrical terminal 3 better connect with the socket, the front end of the electrical terminal 3 is provided with a triangle, and when in butt joint, the end face of the triangle can play a guiding role, and the electrical terminal 3 can be more conveniently in butt joint with other devices. In an alternative embodiment, the front end of the electrical terminal 3 may be in a circular arc shape, and the circular arc end surface may provide a certain inserting and pulling elasticity while playing a role in guiding.

In order to fix the ferrule assembly 2 and provide a certain inserting and pulling elasticity for the ferrule assembly 2 when in connection, referring to fig. 15 and 16, the photoelectric hybrid connector further comprises a spring 5, a limiting block 21 is arranged on the ferrule, a spring seat 47 is arranged in the inner sleeve 4, the spring 5 is sleeved on the ferrule, one end of the spring 5 is abutted against the limiting block 21, and the other end is abutted against the spring seat 47.

Specifically, the diameter of the mounting hole 41 of the inner sleeve 4 is changed, and the diameter of the front part of the mounting hole is larger, so that the spring seat 47 is formed inside the inner sleeve 4; meanwhile, the size of the foremost end of the second accommodating cavity 13 is smaller than that of the limiting block 21; the spring 5 is abutted on the limiting block 21, the limiting block 21 is abutted in the second accommodating cavity 13, so that the ferrule assembly 2 is abutted in the inner sleeve 4 and the body 1, and meanwhile, in the inserting and pulling process of the photoelectric hybrid connector, the ferrule assembly 2 can be compressed and rebounded to a certain extent in the photoelectric hybrid connector under the action of the spring 5, so that the photoelectric hybrid connector is connected with various devices.

In order to protect the electrical terminals 3 and the ferrules, in connection with fig. 17, the opto-electrical hybrid connector further comprises a cartridge 6 and a cover plate 7, wherein:

the second buckle 61 is arranged on the clamping seat 6, the second buckling hole 71 is arranged on the cover plate 7, and the second buckle 61 is clamped with the second buckling hole 71, so that the clamping seat 6 is clamped and connected with the cover plate 7.

At least two second buckles 61 are oppositely arranged at two sides of the clamping seat 6, and at least two second buckling holes 71 are oppositely arranged at two sides of the cover plate 7, so that the clamping seat 6 and the cover plate 7 are in clamping connection. The snap-on connection facilitates the mounting and dismounting between the cover plate 7 and the cartridge 6 for fault detection and replacement of the electrical terminal 3 and the ferrule assembly 2 in case of a fault.

The tail of the clamping seat 6 is provided with a through hole 62 which is used as a channel for a cable to enter the clamping seat 6. The clamping seat 6 and the cover plate 7 are hollow, are used for accommodating the tail end of the inner sleeve 4, and provide space for connecting the ferrule assembly 2 and the electric terminal 3 with a cable.

With reference to fig. 18, the cable enters the middle of the card holder 6 and the cover plate 7 through the through holes 62, three through holes 62 are provided, the middle through hole 62 is used as a channel for the optical fiber cable to enter the photoelectric hybrid connector, the upper through hole 62 and the lower through hole 62 are used as channels for the electrical cable to enter the photoelectric hybrid connector, the upper through hole 62 corresponds to the electrical terminal on the upper surface of the inner sleeve, and the lower through hole 62 corresponds to the electrical terminal on the lower surface of the inner sleeve.

Structurally, the cartridge 6 is designed to be high, so that sufficient space is reserved between the cartridge 6 and the cover plate 7, so that the cable is connected with the electrical terminal 3 and the ferrule assembly 2.

In this embodiment, in order to increase the number of electrical connection paths between the optoelectric hybrid connector and other devices, the optoelectric hybrid connector includes four electrical terminals 3, and the four electrical terminals 3 are symmetrically distributed with respect to the ferrule assembly 2 on the cross section of the body 1.

One of the electric terminal assemblies is used for being communicated with a negative electrode of a power supply, the other electric terminal assembly is used for being communicated with a positive electrode of the power supply, and two electric terminals 3 in the same electric terminal assembly are responsible for one electrode.

In determining the total number of electric terminals in the photoelectric hybrid connector, it is also necessary to consider the relationship between the current magnitude of the power supply and the impedance of the electric terminals, each of the electric terminals 3 being capable of flowing a predetermined magnitude of current, a predetermined number of the electric terminals 3 being arranged such that all of the electric terminals 3 are capable of flowing a predetermined number multiplied by a predetermined magnitude of current, for example, a current of 1A flowing in one of the standard electric terminals 3, the heating condition of the electric terminals 3 being within an acceptable range, the heating being too severe when a current of 2A flows in the electric terminals 3, resulting in poor electrical connection and even damage to the photoelectric hybrid connector; when the power supply current is 2A, two electric terminals 3 are required to be responsible for the current transmission of one electrode, so that the current flowing in each electric terminal is 1A, and the heating condition of the electric terminals 3 is controllable. When the power supply current is 4A, two electric terminals 3 are required to be responsible for the current transmission of one electrode, so that the current flowing in each electric terminal 3 is 1A, and the heating condition of the electric terminals 3 is controllable.

In order to fix the inner sleeve 4 in the clamping seat 6 and the cover plate 7, clamping grooves are formed in the clamping seat 6 and the cover plate 7, and a clamping piece 46 and a clamping block 44 of the inner sleeve 4 are accommodated in the clamping grooves, so that the inner sleeve 4 is fixed between the clamping seat 6 and the cover plate 7.

In order to facilitate plugging and unplugging the photoelectric hybrid connector, referring to fig. 19, in this embodiment, a first elastic piece 17 is disposed on the body 1, a second elastic piece 63 is disposed on the card socket 6, and the first elastic piece 17 and the second elastic piece 63 are in a holding shape.

When the body 1 is inserted into the socket, a portion of the first elastic piece 17 is clamped in the socket, and when the photoelectric hybrid connector is pulled out, the first elastic piece 17 needs to be pressed down to release the clamping state of the first elastic piece 17 and the socket, and the portion of the first elastic piece 17 which is left outside the socket is less, so that an operation space when an operator presses the first elastic piece 17 is less, and the second elastic piece 63 is arranged. In addition, in the unstressed state, the first elastic piece 17 and the second elastic piece 63 are in a holding state.

In an alternative embodiment, as shown in fig. 20, two bodies 1 are integrally disposed in one card holder 6, and each body 1 is provided with a ferrule assembly 2 and at least two electrical terminals 3 in a matching manner, where the optoelectronic hybrid connector is provided with two plugs, and the optoelectronic hybrid connector can be connected with a device with two interfaces.

Since both plugs are capable of transmitting optical signals and electrical signals, one preferred solution is that each plug is responsible for current transmission from one electrode to complete electrical connection with other devices through both plugs. Each plug is responsible for different optical signal transmission so as to complete the transmission of two paths of optical signals through two plugs; at this time, in order to ensure the balanced stress of the ferrule assembly 2 during the plugging, as shown in fig. 21 (a) and (b), the electrical terminals 3 in each plug are centered with respect to the corresponding ferrule assembly 2, and at the same time, the electrical terminals 3 are centered with respect to the axis between the two plugs.

When four electrical terminals 3 are provided in each plug, in one case one electrical terminal assembly in each plug is used for electrical connection, the redundant electrical terminal assemblies are used for transmitting control signals, in another case two electrical terminal assemblies in each plug are used for electrical connection, and the two electrical terminal assemblies are connected by a connection block 31, or by welding, or otherwise.

In this embodiment, when the photoelectric hybrid connector is assembled, the spring 5 is first sleeved on the ferrule assembly 2, the ferrule assembly 2 is pushed into the mounting hole 41, and the ferrule assembly 2 is connected with a corresponding cable; the electrical terminal assembly is connected to the corresponding cable and is mounted on the inner housing 4 with the connection block 31 positioned on the mounting location 45 and the electrical terminal 3 positioned in the first mounting groove 42.

Pushing the inner sleeve 4 into the body 1 from the rear of the body 1, and clamping the first clamping buckle 43 into the first clamping hole 16 to fix the inner sleeve 4 in the body 1; at this time, the spring 5 abuts the stopper 21 in the second accommodating cavity 13, so that the ferrule assembly 2 is fixed between the body 1 and the inner sleeve 4, and the end of the ferrule assembly 2 passes through the first accommodating cavity 12 of the body 1 and is exposed out of the front end of the body 1; the first mounting groove 11 and the second mounting groove 42 are butted, and the electric terminal 3 is accommodated in the second mounting groove 11 and the first mounting groove 42.

Finally, the clamping seat 6 and the cover plate 7 are mounted on the inner sleeve 4, at this time, the second clamping buckle 61 is clamped into the second buckling hole 71, so that the clamping seat 6 and the cover plate 7 are in clamping connection, and the clamping piece 46 and the clamping block 44 are positioned in a limiting groove formed by combining the inside of the clamping seat 6 and the inside of the cover plate 7, so that the inner sleeve 4 is fixed between the clamping seat 6 and the cover plate 7.

Having described the specific structure of the optoelectric hybrid connector, the connection and mating of the optoelectric hybrid connector and the corresponding optoelectric hybrid adapter in this embodiment will be described below.

Referring to fig. 22 and 23, as shown in fig. 22, two photoelectric hybrid connectors 9 are inserted into the insertion cavities of the photoelectric hybrid adapter 8, and the two photoelectric hybrid connectors 9 are abutted through the photoelectric hybrid adapter 8 to realize transmission of optical signals and electrical signals. At this time, a part of the body 1 is accommodated in the plugging cavity, as shown in fig. 23, the electrical terminal 3 abuts against an electrical terminal in the optoelectric hybrid adapter 8 to complete electrical connection, and the ferrule assemblies 3 in the two optoelectric hybrid connectors 9 abut against each other in the optoelectric hybrid adapter to complete coupling of the optical channels.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (10)

1. An opto-electrical hybrid connector, comprising: body (1), lock pin subassembly (2) and at least two electric terminal (3), at least two electric terminal (3) set up the inside of body (1), wherein:

on the cross-sectional layout of the body (1), the ferrule assembly (2) is arranged at the center of the cross-section of the body (1), and at least two electrical terminals (3) are symmetrically distributed on the cross-section of the body (1) about the ferrule assembly (2);

the ferrule assembly (2) is used for coupling optical signals;

the electrical terminal (3) is used for coupling electrical signals.

2. The optoelectric hybrid connector of claim 1, further comprising an inner sleeve (4), a front end of the inner sleeve (4) being received within the body (1), the inner sleeve (4) being snap-connected with the body (1);

the inner sleeve (4) is provided with a mounting hole (41), and the tail end of the ferrule assembly (2) is accommodated in the mounting hole (41); the surface of the inner sleeve (4) is also provided with at least two first mounting grooves (42), the at least two first mounting grooves (42) are symmetrically distributed relative to the center of the mounting hole (41), and the rear end of the electric terminal (3) is arranged on the corresponding first mounting groove (42).

3. The optoelectric hybrid connector of claim 2, wherein at least two second mounting grooves (11) are provided on the inner wall of the body (1), the at least two second mounting grooves (11) being symmetrically distributed with respect to a center point of a cross section of the body (1);

each of the second mounting grooves (11) is aligned with the corresponding first mounting groove (42), and the front end of the electric terminal (3) axially protrudes from the first mounting groove (42) and is disposed in the second mounting groove (11).

4. A hybrid optical electrical connector according to claim 3, wherein the body (1) is provided with a first housing cavity (12), a second housing cavity (13) and a third housing cavity (14), wherein:

the second accommodation chamber (13) is located between the first accommodation chamber (12) and the third accommodation chamber (14);

the second mounting groove (11) is arranged on the side wall corresponding to the first accommodating cavity (12) and the second accommodating cavity (13), and the second mounting groove (11) is communicated with the first accommodating cavity (12);

a limiting ring (15) is arranged between the second accommodating cavity (13) and the side wall of the body (1), and the second accommodating cavity (13) and the second mounting groove (11) are separated by the limiting ring (15) so as to prevent the electric terminal (3) from being contacted with the ferrule assembly (2).

5. The optoelectric hybrid connector of claim 4, wherein a first snap hole (16) is provided in a side wall of the third receiving cavity (14), and a first snap (43) is provided in the inner sleeve (4);

the front end of the inner sleeve (4) is accommodated in the third accommodating cavity (14), and the first buckle (43) is clamped with the first buckling hole (16) so that the inner sleeve (4) is clamped and connected with the third accommodating cavity (14).

6. The optoelectric hybrid connector of claim 2, wherein each two electrical terminals (3) combine to form one electrical terminal assembly, a connection block (31) being provided between two of the electrical terminals (3);

the surface of endotheca (4) is provided with at least one screens piece (44) and at least one installation position (45), installation position (45) set up in deviating from in the direction that first mounting groove (42) extended, screens piece (44) set up between two first mounting groove (42) that are located same side, connecting block (31) set up on installation position (45), just connecting block (31) butt screens piece (44).

7. The optoelectric hybrid connector of claim 6, wherein at least two cards (46) are provided on the surface of the inner sleeve (4), each of the clamping blocks (44) is provided with two of the cards (46) in a mating manner, the two cards (46) are provided on opposite sides of the clamping block (44), and the corresponding first mounting groove (42) is provided between the card (46) and the clamping block (44).

8. The photoelectric hybrid connector according to claim 2, further comprising a spring (5), wherein a stopper (21) is provided on the ferrule, a spring seat (47) is provided inside the inner sleeve (4), the spring (5) is sleeved on the ferrule, one end of the spring (5) abuts against the stopper (21), and the other end abuts against the spring seat (47).

9. The optoelectrical hybrid connector of claim 2, further comprising a cartridge (6) and a cover plate (7), wherein:

the clamping seat (6) is provided with a second buckle (61), the cover plate (7) is provided with a second buckling hole (71), and the second buckle (61) is clamped with the second buckling hole (71) so as to enable the clamping seat (6) to be in clamping connection with the cover plate (7);

the tail part of the clamping seat (6) is provided with a through hole (62) which is used as a channel for a cable to enter the clamping seat (6);

the clamping seat (6) and the cover plate (7) are hollow, are used for accommodating the tail end of the inner sleeve (4) and provide space for connection of the ferrule assembly (2) and the electric terminal (3) with a cable.

10. The optoelectric hybrid connector of any one of claims 1 to 9, comprising four of the electrical terminals (3), the four electrical terminals (3) being symmetrically distributed about the ferrule assembly (2) in a cross-section of the body (1).

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