CN113193400B

CN113193400B - AOC high-speed connector plug and connector assembly

Info

Publication number: CN113193400B
Application number: CN202110473246.0A
Authority: CN
Inventors: 王猛; 董伟强; 冯动动; 董佳佳; 徐骏; 杨晓楠; 闫永杰; 孙明杰; 武学顺
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2022-05-13
Anticipated expiration: 2041-04-29
Also published as: CN113193400A

Abstract

The invention relates to an AOC high-speed connector plug, which comprises a plug shell, wherein the plug end of the plug shell is taken as the front end, an electric transmission part and an optical module are arranged in the plug shell, the electric transmission part comprises a plug contact element and a plug printed board, the front end of the plug contact element is provided with a contact part, the contact part extends along the front-back direction, the optical module is arranged on the plug printed board, the installation direction of the optical module is vertical to the extension direction of the contact part, the electric transmission part is provided with a bending part for connecting the contact part with the optical module, and the connector plug can be miniaturized in the bending part by bending the plug contact element or the plug printed board. On the basis of the existing connector plug, the optical fiber is adopted to transmit high-speed signals, the optical module, the plug contact module and the plug printed board are matched to realize long-distance transmission of the high-speed signals through the optical fiber, the quality of the transmitted signals can be improved, and the connector plug is miniaturized through bending of an electric transmission component.

Description

AOC high-speed connector plug and connector assembly

Technical Field

The invention belongs to the technical field of connectors, and particularly relates to an AOC high-speed connector plug and a connector assembly.

Background

In the medical field, medical endoscopes are mainly applied to surgical operations and routine medical examinations, and compared with traditional surgical operations, the functions of the medical endoscopes are widely accepted by doctors and patients in minimally invasive operations, the medical endoscopes utilize natural holes of human bodies or a plurality of small holes are formed as necessary, and doctors can perform closed operation in vivo only by extending an endoscope probe into the body skillfully and through other surgical instruments and a camera display system. Endoscope equipment end connector is with endoscope probe's image signal with analog or digital signal's form input endoscope equipment, and through handling with image display on the display screen, along with the development of science and technology, the image signal of transmission is bigger and bigger, and connector assembly for the equipment requires more and more high, and present equipment end connector transmission signal is not good when transmitting high definition image, and transmission distance is short, and the big shortcoming of electromagnetic influence is more and more obvious. Due to the special medical environment, the connector needs to be disinfected frequently in various ways, and needs to be resistant to various disinfectant solutions, high-temperature air sealing and the like.

Most of the existing connector plugs are electrical connectors, as shown in fig. 1, the tail of the connector plug is connected to the cable 100, and the connection with the device is realized through the contact 300 in the connector housing 200. The principle is as follows: the signal conductor in the cable is communicated with the contact piece in a welding or crimping mode, then the contact piece is fixed in the shell, after the connector plug is inserted into the socket, the contact piece in the connector plug is communicated with the contact piece in the socket, signal transmission is achieved, the requirement cannot be met during high-definition signal transmission, when high-speed digital signals (more than 1G) are transmitted, the connector cannot meet the performance requirement, the transmission distance is long, the anti-interference capacity is weak, the transmission signals are easily influenced, and the requirement of modern technical development cannot be met.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides an AOC high-speed connector plug which adopts optical fibers to transmit high-speed signals, can ensure the miniaturization of the overall size of a connector and simultaneously realizes the remote transmission of high-definition signals.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. The plug of the AOC high-speed connector comprises a plug shell, wherein a plug insulator is arranged in the plug shell, a plug-in end of the plug shell is taken as a front end, an electric transmission component and an optical module are arranged in the plug shell, the electric transmission component comprises a plug contact element and a plug printed board, the plug contact element is installed in the plug insulator, the front end of the plug contact element is provided with a contact part, the contact part extends along the front-back direction, the optical module is installed on the plug printed board, the plug printed board is horizontally arranged in the front-back direction, the installation direction of the optical module is in the up-down direction, the installation direction of the optical module is perpendicular to the extension direction of the contact part, and the electric transmission component is provided with a bending part connecting the contact part and the optical module.

Because the optical module and the plug contact element need to be connected in a bending direction, the connection between the optical module and the plug contact element can be realized, and the volume of the connector plug is reduced, so that the bending can be realized by adopting two schemes, one is to bend the plug contact element, and the other is to bend the plug printed board.

When the scheme that the plug contact element is bent is adopted, the bent part comprises a fixing part of the plug contact element, and the front end of the fixing part is connected with the contact part; the rear end of the fixing part extends towards the plug printed board so that the rear end of the fixing part is electrically connected with the plug printed board.

Preferably, the rear end of the fixing part is bent towards the direction away from the plug printed board, then bent towards the direction close to the plug printed board and extended towards the direction perpendicular to the plug printed board, so that the rear end of the fixing part is electrically connected with the plug printed board; the upper space of the plug shell can be effectively utilized, the mounting height of the plug printed board moves upwards, the height of the plug shell can be reduced, and the size of the connector is further reduced.

Furthermore, the rear end of the fixing part can be bent towards the direction departing from the plug printed board, then horizontally extends backwards, and finally is bent towards the direction close to the plug printed board and continues to extend towards the direction perpendicular to the plug printed board, so that the rear end of the fixing part is electrically connected with the plug printed board.

The bending schemes of the three plug contact elements can realize the connection of the contact part and the optical module, and the size miniaturization of the connector plug is realized.

When the scheme that the plug printed board is bent is adopted, the plug printed board is a rigid-flexible board, the rear end of the plug contact element is connected with the optical module through the rigid-flexible board, the plug contact element is a straight circular contact pin, and the bending part comprises the rigid-flexible board and a fixing part, wherein the contact part extends backwards and horizontally.

Furthermore, the rigid-flexible board comprises a first rigid printed board, a second rigid printed board and a flexible board connected with the two rigid printed boards, the first rigid printed board and the second rigid printed board are perpendicular to each other, the first rigid printed board is used for being connected with the rear end of the plug contact element, and the second rigid printed board is used for being connected with the optical module.

Preferably, the plug contacts are arranged in at least two layers in the vertical direction, each layer of plug contacts comprises a signal contact and a grounding pin, two adjacent signal contacts form a differential signal pair, and the differential signal pair is arranged between two adjacent grounding pins. Further, the plug contact also includes a power contact. The plug shell is internally provided with a front plug insulator and a front plug insulator which are arranged in a front-back mode, the front plug insulator is used for installing a plug contact element, a contact part of the plug contact element is located in a groove of the front plug insulator and does not extend out of the groove, and the front plug insulator is provided with an isolation part which is used for separating a power contact element and a signal contact element.

Preferably, the differential signal pairs of two adjacent layers are distributed in a staggered manner in the vertical direction, so that crosstalk of high-speed contacts of different layers can be effectively reduced.

Preferably, a guide pin is arranged in the plug shell, and the guide pin is arranged on the plug insulator; the power supply contact is higher than the signal contact and lower than the guide pin in the insertion direction of the plug.

Preferably, the rear end of the plug contact is provided with a fisheye crimping end which is crimped with the plug printed board, the diameter of the fisheye crimping end is smaller than that of the plug contact, and the diameter change can improve the impedance.

Preferably, the fisheye crimping end is fitted to the rear end of the plug contact by crimping or welding, or the fisheye crimping end and the plug contact are of an integral structure.

The invention also provides a connector assembly which comprises a connector plug and a connector socket which are in adaptive insertion connection, wherein the connector plug is the AOC high-speed connector plug.

By means of the technical scheme, the optical fiber is adopted to transmit high-speed signals on the basis of the existing connector plug, the optical module, the plug contact module and the plug printed board are matched to realize long-distance transmission of the high-speed signals through the optical fiber, the high-speed signals of more than 10G can be transmitted, the quality of the transmitted signals is improved, and the connector plug has the advantage of high anti-jamming capability.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are specifically described below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view of a prior art connector plug.

Fig. 2 is a sectional view showing a connector plug of the present invention.

Fig. 3 is an exploded view of the connector plug of the present invention.

Fig. 4 to 5 are schematic exploded views of a plug front insulator, a sealing body, a plug contact module, a plug printed board, and an optical module according to the present invention.

Fig. 6 is a schematic view of a bent plug contact in accordance with one embodiment of the connector assembly of the present invention.

Fig. 7 is a schematic view of the distribution of plug contacts in the present invention.

Fig. 8 is a perspective view of the sealing body.

Fig. 9 is a schematic view of the mounting position of the sealing body.

Fig. 10 is an assembly view of the fisheye crimp end and the plug contact.

Figure 11 is a schematic view of the relative positions of the contact portions and the recesses of the front insulator of the plug.

Fig. 12 is a schematic height view of the guide pins, the signal contacts, and the power contacts in the direction of insertion of the connector plug.

Fig. 13 is a schematic cross-sectional view of a connector jack of the present invention.

Fig. 14 is an exploded view of a connector receptacle of the present invention.

Fig. 15 is an exploded perspective view of a connector receptacle of the present invention.

Fig. 16 is a schematic view of the pin module, the jack and the front insulator of the plug.

Fig. 17 is a schematic view of the distribution of jacks.

Fig. 18 is a schematic view of an air gap.

Fig. 19 is a block diagram of a connector plug of the second embodiment of the connector assembly.

Detailed Description

The following detailed description is to be read in connection with the drawings and the preferred embodiments.

The first embodiment of the connector assembly, as shown in fig. 2 to 18, includes a connector plug 1 and a connector socket 2 that are adapted to be plugged, where the connector plug 1 is an AOC high-speed connector plug, and is particularly suitable for achieving complete and stable transmission of high-speed signals in an endoscope apparatus.

When describing the connector plug, the front end of the connector plug 1 is taken as the plugging end for plugging with the connector socket, and the plugging direction of the connector plug is the front-back direction. In this embodiment, the connector plug 1 includes a plug housing 11, a plug contact module 12, an optical module 13, a plug printed board 14, a plug tail attachment 15, and a tail sheath 16. The plug contact module 12 is fixedly fitted in the plug housing 11, and the plug contact module 12 includes a plug insulator 121 and a plurality of plug contacts 122 mounted in the plug insulator, the plug contacts being circular pins. The front end of the plug contact is a contact part 1221 protruding out of the plug insulator, the contact part is used for being inserted into a jack in the connector socket 2, and the rear end of the plug contact is a crimping end 1223 used for being connected with the plug printed board 14; the portion between the contact portion and the crimping end in the plug contact is a fixing portion 1222, which is embedded in the plug insulator 121 to realize the mounting and fixing of the plug contact. Preferably, the plug contacts 122 are embedded in the plug insulator 121 in an insert manner, i.e., the plug contacts are molded after being laid out to form a plug contact module. The outer surface of the plug insulator 121 is provided with interference protrusions 1211 to facilitate the retention of the plug insulator within the plug housing in a positive fit. The plug housing 11 is also provided with a plug front insulator 17, the plug front insulator 17 is arranged at the front end of the plug insulator 11, the contact part 1221 of each plug contact is positioned in the groove 171 of the plug front insulator 17, but the front end of the contact part does not protrude out of the front end of the plug front insulator, so that the plug contacts can be prevented from being touched by mistake.

The plug printed board 14 is installed at the rear end of the plug contact element module 12, the crimping end 1223 is in contact conduction with the plug printed board 14, the optical module 13 is installed on the plug printed board 14, and the optical module 13 is connected with an optical fiber in a cable at the tail part of the connector plug. In order to meet the requirement of high-speed transmission, the size of the plug printed board is large, the plug printed board 14 is horizontally arranged along the front-back direction, the size miniaturization of the connector is facilitated, the mounting direction of the optical module 13 is the up-down direction, therefore, the mounting direction of the optical module 13 is perpendicular to the extending direction of the contact part 1221 at the front end of the plug contact piece, the perpendicular arrangement is the source of saving the inner space of the connector plug, and at the moment, bending in the connecting direction is inevitably needed between the optical module 13 and the contact part 1221. In this embodiment, in order to reduce the volume of the connector plug under the condition that the connector plug has a large signal transmission capacity and a high transmission rate, the plug contacts 122 are arranged on the plug insulator 121 in a layered manner, as shown in fig. 7, the plug contacts 122 are arranged in two layers in the vertical direction, or only one or more than two layers may be arranged, and the routing direction of the plug contacts from front to back inside the plug insulator is as follows: the plug contact piece is bent in the direction away from the plug printed board, horizontally extends towards the rear end, is bent towards the direction close to the plug printed board and extends towards the direction perpendicular to the plug printed board, and finally the crimping end and the contact part are mutually perpendicular to each other, so that the plug contact piece is conducted with the plug printed board after turning for 90 degrees, the height of the plug connector can be effectively reduced, and the size of the connector is reduced. Specifically, in order to reduce the height of the connector, the plug printed board 14 is horizontally arranged at the rear end of the plug contact module, and if the plug printed board is vertically arranged, the height of the connector is increased; therefore, the upper space in the height direction in the plug shell can be effectively utilized by bending the plug contact element to the opposite direction of the printed board and then bending the plug contact element to the direction vertical to the printed board; in order to facilitate understanding and highlight the beneficial effects of the scheme, as a comparison, if the plug contact 122 is bent at a right angle inside the plug insulator, that is, the plug contact is not bent for a certain distance in the direction away from the plug printed board, and only the contact portion is horizontally extended towards the rear end and then is routed in the direction perpendicular to the plug printed board, then the vertical section 12221 perpendicular to the plug printed board must have a certain extension length, so that the position of the plug printed board 14 is forced to move downwards, and at this time, the lower part of the cavity of the plug housing 11 needs to have a larger height space to accommodate the downward-moving plug printed board, thereby increasing the height of the connector.

In the present embodiment, two layers of plug contacts 122 are provided in the plug insulator 121 in total in the up-down direction to satisfy high-speed signal transmission, each layer of plug contact including a plurality of signal contacts 123 and a ground pin 124. In each layer of header contacts, two adjacent signal contacts form a differential signal pair 125 (shown by a dashed line box in fig. 7), and in order to prevent crosstalk between the differential signal pairs, the differential signal pair 125 is disposed between two adjacent ground pins 124, so that a distribution pattern of GSSGSSG is formed in the same layer. Preferably, the differential signal pairs of two adjacent layers are distributed in a staggered manner in the left-right direction, so that the grounding pins are arranged around the differential signal pairs, the distance between the differential signal pairs of different layers is increased, and the connector plug has an ideal crosstalk value. In addition, a guide pin 18 may be provided at a space position displaced from the position of the head, and the guide pin plays a role of guiding when the head base is inserted.

Further, the plug contacts further include power contacts 126 for providing power and for transmitting low-speed protocol signals, which may be provided in two layers. The differential signal pair belongs to a high-speed contact element, and the power supply contact element is a low-speed contact element, so that the isolation part 172 is arranged on the plug front insulator 17 between the high-speed contact element and the low-speed contact element, the isolation part extends along the front-back direction, the isolation part is higher than all plug contact elements in the plug plugging direction, and the isolation part can improve the voltage resistance between the differential signal pair and the power supply contact element. The upper differential signal pairs are all positioned in one groove, the lower differential signal pairs are all positioned in the other groove, and therefore the differential signal pairs in different layers are also isolated by the front plug insulator.

In order to provide good sealing performance for the connector plug, a sealing body 3 is arranged between the plug contact module 12 and the plug housing 11, and the sealing body 3 can be formed by silicone injection molding or assembling, so that complete sealing is also realized at each plug contact. In this embodiment, the sealing body 3 is detachably disposed at the front end of the plug insulator in an assembled manner, as shown in fig. 8, the sealing body includes a side sealing portion 31 and a front sealing portion 32, the side sealing portion 31 is a sealing body disposed along the circumferential direction, the front sealing portion 32 is disposed at the front end of the side sealing portion 31, a hole 321 in interference fit with the plug contact is disposed on the front sealing portion, and an inner diameter of the hole is smaller than a diameter of the plug contact penetrating through the front end face of the plug contact, so as to achieve good sealing performance in interference fit with the plug contact. The seal sleeve 3 is mounted at the front end of the plug insulator 121 in a forced-fitting manner, and after the plug contact module is mounted in the plug housing, the side seal portion 31 is located between the inner wall of the plug housing 11 and the plug insulator 121, thereby achieving sealing between the plug contact module and the plug housing. Each plug contact 122 passes through a corresponding hole 321 in the front sealing portion 32, so that the front sealing portion seals each plug contact individually, thereby achieving sealing between the corresponding plug contact and the plug insulator. The side sealing part 31 has a rectangular frame structure as a whole, and the front sealing part 32 has a rectangular sheet structure, but the present invention is not limited to this shape. Preferably, a gap 33 is left between the front sealing part 32 and the side sealing part 31 at the upper and lower sides, a groove 1212 is provided at the front end of the plug insulator 121, the shape of the gap 33 is matched with protrusions 1213 at the upper and lower sides of the plug insulator, after the sealing body is installed in place, the front sealing part 32 is wholly embedded in the groove 1212, the protrusions 1213 pass through the gap 33 and are matched with positioning holes 173 on the front plug insulator 17 through positioning pins 1214 on the protrusions 1213, so that the front sealing part is limited in the groove after the plug insulator and the front plug insulator are buckled, and because the front sealing part is embedded in the groove, the buckling force of the plug insulator and the front plug insulator in the front-back direction only partially acts on the front sealing part, and the service life of the sealing body can be prolonged on the premise of sealing performance.

In this embodiment, the crimping end 1223 of the plug contact is a fisheye crimping end, and the thickness of the fisheye crimping end is smaller than the diameter of the plug contact. Because the contact part and the fixed part of the plug contact are thicker in diameter and smaller in impedance, the crimping end is made smaller in size in order to balance the overall impedance of the plug contact, so that the diameter is changed between the crimping end and the fixed part, the impedance of the crimping end can be improved, and the impedance value of the connector plug is in a required range. Preferably, the fisheye crimping end can be assembled at the rear end of the plug contact in a crimping or welding manner, or the fisheye crimping end and the fixing part are of an integral structure, and in this case, the whole plug contact is of an integral structure. It is worth to be noted that when the fisheye crimping end is installed on the fixing portion in a crimping mode, two ends of the fisheye crimping end are both fisheye structures, the fisheye structure is integrally in an 8 shape, one fisheye structure is used for being in interference fit with the opening at the tail end of the fixing portion, and the other fisheye structure is used for being in welding-free crimping with the plug printed board.

The plug tail accessory 15 is fixed at the rear end of the plug shell 11 and can be fixedly connected with the plug shell through locking parts such as screws or buckles, the plug tail accessory is used for being butted with the plug shell to seal the inner space of the whole plug shell, protecting cables and other internal components which are connected into a connector plug and can also be used for further limiting the front insulator 17 of the plug and the plug contact module 12; specifically, during assembly, the front plug insulator and the plug contact module are sequentially inserted into the plug housing through the rear end of the plug housing, the front end of the front plug insulator 17 is in stop fit with the inner step of the front end of the plug housing to achieve limiting, as shown in fig. 9, the front end of the plug tail accessory 15 enters the plug housing and abuts against the rear end of the plug insulator, and therefore the plug contact module 12 is limited between the front plug insulator 17 and the plug tail accessory 15. In another embodiment, the plug front insulator and the plug insulator may be fixed inside the plug housing in a reinforced manner in other manners, which is not limited by the present invention.

The connector receptacle 2 is structured as shown in fig. 13 to 18 with the plug terminal of the connector receptacle as the front end thereof. The connector socket 2 comprises a socket shell 21, a socket front insulator 22, a jack 23, a pin module 24 and a socket printed board 25, wherein the pin module 24 comprises a pin insulator 241 and a socket pin 242 installed in the pin insulator, the pin insulator 241 and the socket front insulator 22 are buckled to form the socket insulator, the jack 23 is installed in the socket insulator, the front end of the jack 23 is used for being plugged with a plug contact 122, the rear end of the jack 23 is used for being connected with the front end of the socket pin 242, and the jack 23 and the socket insulator are in clearance fit so that the jack can move in a radial direction in a small amplitude. The rear ends of the socket pins 242 are connected to the socket printed board 25.

In this embodiment, the front end of the insertion hole 23 is a first wire hole 231, and the rear end is a second wire hole 232, so that the insertion hole 23 is a double-headed wire hole and has a transfer function. The first wire spring hole 231 is used for being plugged with a plug contact element, and the wire spring wire distribution form in the wire spring hole enables the inner hole to have a waist-shaped structure, and a circular plug pin can swing or float in the hole in the radial direction after being inserted into the wire spring hole. The second wire spring hole 232 is in butt joint with the socket contact pin, and when the jack 23 is a double-head wire spring hole, the second wire spring hole can be in small-amplitude radial relative floating with the socket contact pin, so that the radial floating range of the plug contact piece and the jack is further enlarged.

The working principle of the connector assembly is as follows: after the connector plug 1 and the connector socket 2 are plugged, signals to be transmitted are transmitted to the optical module 13 through optical fibers in cables accessed from the tail of the connector plug to perform photoelectric signal conversion, then the converted signals are transmitted to the plug contact module 12 through the plug printed board 14, a contact part at the front end of the plug contact module is inserted into a first wire spring hole at the front end of a jack 23 in the connector socket to transmit the signals to a pin module 24 at the socket end, and finally the signals are transmitted to the inside of equipment through the socket printed board 25 by the pin module.

Preferably, the receptacle pins 242 are placed in the pin insulator 241 in insert form, i.e., the receptacle pins are injection molded to form a high speed pin module, and the receptacle pins are fixed and not removable from the pin insulator. The afterbody of socket contact pin sets up contact pin crimping end 243, and contact pin crimping end also is the fish eye structure, and the fish eye structure switches on with socket printing board contact with the crimping form, has realized exempting from to weld the crimping, improves work efficiency, the installation of the socket printing board of also being convenient for. Further, contact pin crimping end can be with socket contact pin for dismantling the connected mode, for example the both ends of contact pin crimping end 243 are the flake structure, and one of them flake structure is used for with socket contact pin rear end trompil forced fit, another flake structure be used for with socket printing board crimping, perhaps with contact pin crimping end welding at socket contact pin rear end, also can make contact pin crimping end and socket contact pin integrated into one piece processing, form the integral type structure. In addition, the diameter of the socket contact pin 242 is larger than the thickness and the diameter of the contact pin crimping end, the diameter of the socket contact pin for transmitting high-speed signals is larger, the size of the fisheye structure at the rear end of the socket contact pin is smaller, the two have variable diameters, impedance adjustment can be achieved, and high-speed signal switching between a contact pin module and a printed board is facilitated.

Referring to fig. 16, the receptacle front insulator 22 is provided with receiving holes 221, and after the rear ends of the insertion holes 23 are inserted into the corresponding receptacle pins, the pin modules 24 are integrally engaged with the receptacle front insulator 22, so that the insertion holes 23 are inserted into the receiving holes 221, and the insertion holes 23 are now limited between the front ends of the receiving holes and the front end surface of the receptacle insulator. Preferably, the front end face of the contact pin insulator is provided with a protrusion, the rear end face of the socket front insulator is provided with a pit, and the protrusion and the pit are matched to realize relative limiting of the protrusion and the pit. As shown in fig. 15, the socket insulator formed by the combined pin insulator and the socket front insulator is installed inside the socket housing, and the socket insulator is provided with an interference portion 26 which is matched with the inner wall of the socket housing, so that the socket insulator can be positioned by force. In addition, a boss 27 may be provided on the socket insulator so as to be spaced from the abutment 211 in the socket housing 21 in the front-rear direction, and after the socket printed board is fixed to the rear end of the socket housing by a screw, the socket end connection module constituted by the entire pin module, the jack, and the socket front insulator may be entirely spaced between the socket printed board and the abutment. The outer wall of the accommodating hole is in guiding fit with the inner wall of the groove of the front insulator of the plug when the head seat is inserted, so that the insertion and closing guiding function is realized.

The positions and the number of the jacks 23 are matched with those of the plug contact elements, the accommodating holes are arranged in one-to-one correspondence with the jacks, the inner walls of the accommodating holes 221 corresponding to the signal contact elements and the grounding pins are provided with convex ribs 2211, and the other accommodating holes corresponding to the power supply contact elements do not need to be provided with convex ribs. Protruding muscle 2211 sets up three protruding muscle at every accommodation hole inner wall along circumference equipartition, this embodiment, forms air gap 2212 between the adjacent protruding muscle, can improve the impedance match of high-speed product at the accommodation hole inner wall. Specifically, the air impedance is greater than the insulator impedance, if the insulator is used to adjust the impedance, a thicker insulator needs to be filled between the plug insulator and the jack, which is equivalent to that the plug insulator needs to be made very thick on the premise of meeting impedance matching, which is not beneficial to reducing the volume, and if the air gap is used, the impedance requirement can be met under the condition that the volume of the plug insulator is relatively smaller, so that the transmission requirement of high-speed signals is met. As for the inner wall of the accommodating hole corresponding to the power supply contact, since the inner wall is not involved in the transmission of high-speed signals, which are only low-speed protocols or power supply signals, no air gap needs to be arranged. In addition, the convex rib also limits the radial large-amplitude shaking of the jack, but a small gap is reserved between the convex rib and the jack, so that the clearance fit between the jack and the socket insulator is met.

The socket insulator is provided with a guide sleeve 28, the guide sleeve 28 is specifically arranged at the front end of the pin insulator, and the guide sleeve and the guide pin are in guide sliding fit along the plugging direction, so that the guide in the process of plugging the head seat is realized. Preferably, as shown in fig. 12, the power supply contact 126 is higher than the signal contact 123 in the plug insertion direction, and the power supply contact is lower than the guide pin 18, so that the plug can be inserted with a stepped guide. Specifically, the length of the power contact exposed out of the sealing glue of the plug insulator is smaller than the length of the guide pin protruding out of the front end face of the plug insulator and is larger than the length of the signal contact, so that in the process that the connector plug is inserted into the connector socket, the plug shell and the socket shell are guided firstly, the guide pin and the guide sleeve are matched and guided along with the insertion of the connector plug, when the connector plug is inserted continuously, the power contact contacts the jack at the socket end again, and finally, the differential signal pair in the connector plug contacts the corresponding jack again, so that the insertion and extraction force of the connector plug can be reduced through the graded guiding, and the service life is prolonged.

Embodiment two of the connector assembly:

as shown in fig. 19, the present embodiment differs from the first embodiment of the connector assembly only in the connector plug, and the present embodiment differs from the first embodiment in that: the plug contact is formed by adopting the existing straight circular contact pin, the plug contact does not need to be bent, but the plug printed board 14 is bent, namely the electric contact part is provided with a bent part, and the effect of reducing the size of the connector plug can be achieved. At this moment, the plug printed board adopts a rigid-flexible board, the rigid-flexible board comprises a first rigid printed board 141, a second rigid printed board 142 and a flexible board 143 connected with the two rigid printed boards, the first rigid printed board is vertically arranged, the second rigid printed board is horizontally arranged, the first rigid printed board is perpendicular to the second rigid printed board, 90-degree bending of the plug printed board is achieved, wiring layout inside the plug shell is facilitated, and the size of the connector is reduced. The first rigid 141 printed board is connected with the rear end of the plug contact 122, the second rigid printed board 142 is used for connecting with the optical module 13, and the flexible board 143 is used for realizing signal transmission of the first and second rigid printed boards. The first rigid printed board may be positioned at the rear end of the plug insulator by a fastener such as a screw, and the second rigid printed board may be positioned in the plug housing by a support. In this embodiment, the optical fiber in the plug cable transmits a signal to be transmitted to the optical module to perform photoelectric signal conversion, and then the converted signal is transmitted to the plug contact module through the rigid-flexible board, and is finally transmitted to the device when the header is plugged. The features and effects of other components are identical to those of the first embodiment of the connector assembly, and are not described again.

After the connector plug and the connector socket are plugged, the headstock is locked through the locking mechanism, the locking mechanism can adopt a steel ball locking structure, a buckle locking structure, a forced assembly structure and the like, and the invention does not limit the locking mechanism for realizing the locking of the two ends of the headstock.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art can make any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the present invention without departing from the scope of the present invention, and still fall within the scope of the present invention.

Claims

The AOC high-speed connector plug comprises a plug shell (11), and the plug end of the plug shell is the front end, and is characterized in that:

an electric transmission component and an optical module (13) are arranged in a plug shell (11), the electric transmission component comprises a plug contact element module (12) and a plug printed board (14), the plug contact element module (12) comprises a plug insulator (121) and a plug contact element (122), the plug insulator is used for installing the plug contact element (122), the front end of the plug contact element is provided with a contact part (1221), the contact part extends along the front-back direction, the optical module (13) is installed on the plug printed board (14), the installation direction of the optical module (13) is perpendicular to the extension direction of the contact part (1221), and the electric transmission component is provided with a bending part which is used for connecting the contact part (1221) and the optical module (13);

a sealing body (3) is arranged between the plug contact element module (12) and the plug shell (11), the sealing body (3) comprises a side sealing part (31) and a front sealing part (32), and a hole (321) in interference fit with the plug contact element (122) is formed in the front sealing part (32) so as to seal the plug contact element (122); gaps (33) are reserved between the front sealing part (32) and the side sealing part (31) at the upper side and the lower side, protruding parts (1213) are arranged at the upper side and the lower side of the plug insulator, the protruding parts (1213) are used for penetrating through the corresponding gaps (33), positioning pins (1214) are arranged on the protruding parts (1213), a plug front insulator (17) located in front of the plug insulator (121) is arranged in the plug shell (11), and the positioning pins (1214) are used for being matched with positioning holes (173) arranged on the plug front insulator (17) so as to install the sealing body between the plug insulator (121) and the plug front insulator (17).
2. The AOC high-speed connector plug of claim 1, wherein: the bent portion includes a fixing portion (1222) of the plug contact, and the front end of the fixing portion is connected with the contact portion (1221); the rear end of the fixing part (1222) extends towards the direction perpendicular to the plug printed board (14) so that the rear end of the fixing part is electrically connected with the plug printed board.
3. The AOC high-speed connector plug of claim 2, wherein: the rear end of the fixing portion (1222) is bent towards the direction departing from the plug printed board and then bent towards the direction close to the plug printed board.
4. The AOC high-speed connector plug of claim 1, wherein: the plug printed board (14) is a rigid flexible board, the rear end of the plug contact element (122) is connected with the optical module (13) through the rigid flexible board, and the bending part comprises the rigid flexible board.
5. The AOC high-speed connector plug of claim 4, wherein: the rigid-flexible board comprises a first rigid printed board (141), a second rigid printed board (142) and a flexible board (143) connected with the two rigid printed boards, the first rigid printed board and the second rigid printed board are perpendicular to each other, the first rigid printed board (141) is connected with the rear end of the plug contact element (122), and the second rigid printed board (142) is connected with the optical module (13).
6. The AOC high-speed connector plug of claim 1, wherein: the plug contact elements (122) are arranged in at least two layers in the vertical direction, each layer of plug contact element comprises a signal contact element (123) and a grounding pin (124), two adjacent signal contact elements form a differential signal pair (125), and the differential signal pair (125) is arranged between two adjacent grounding pins (124).
7. The AOC high-speed connector plug of claim 6, wherein: the plug contacts further include power contacts (126).
8. The AOC high-speed connector plug of claim 1, wherein: the contact portions (1221) of the plug contacts are located in the recesses (171) of the front plug insulator.
9. The AOC high-speed connector plug of claim 8, wherein: the contact portion of the plug contact does not protrude out of the groove.
10. The AOC high-speed connector plug of claim 8, wherein: the front insulator of the plug is provided with an isolation part (172).
11. The AOC high-speed connector plug of claim 6, wherein: the differential signal pairs (125) of two adjacent layers are distributed in a staggered mode.
12. The AOC high-speed connector plug of claim 7, wherein: the plug shell is provided with a guide pin (18); the power supply contact (126) is higher than the signal contact (123) and lower than the guide pin (18) in the plug-in direction.
13. The AOC high-speed connector plug of claim 1, wherein: the rear end of the plug contact is provided with a fisheye crimping end (1223) for crimping with a plug printed board.
14. The AOC high-speed connector plug of claim 13, wherein: the fisheye crimping end has a diameter smaller than the diameter of the plug contact.
15. The AOC high-speed connector plug of claim 13, wherein: the fisheye crimping end (1223) is assembled at the rear end of the plug contact piece in a crimping or welding mode, or the fisheye crimping end and the plug contact piece are of an integrated structure.
16. Connector assembly, including the connector plug and the connector socket that the adaptation was pegged graft, its characterized in that: the connector plug is an AOC high speed connector plug of any one of claims 1 to 15.