CN113422248B

CN113422248B - High-speed connector assembly and lock catch thereof

Info

Publication number: CN113422248B
Application number: CN202110692945.4A
Authority: CN
Inventors: 李栋; 刘成荫; 阎瑞兵
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-04-01
Anticipated expiration: 2041-06-22
Also published as: CN113422248A

Abstract

The invention relates to a high-speed connector assembly and a lock catch thereof, wherein the high-speed connector assembly comprises a male end connector and a female end connector, the male end connector comprises a male end insulator and male end terminals which are arranged in the male end insulator in rows, and the lock catch is arranged on two sides of the male end insulator; the female end connector comprises a female end insulator and female end terminals arranged in the female end insulator in rows, a female end shielding shell is arranged on the female end insulator, locking grooves corresponding to the locking buckles are formed in two sides of the female end shielding shell, and the locking buckles are connected with the locking grooves in a buckling mode to realize the inserting locking of the male end connector and the female end connector; after the inserting and locking, the female terminal and the male terminal are correspondingly contacted and conducted. The male end connector is locked with the female end connector through the lock catch, so that the locking structure is convenient and quick, is suitable for a narrow connector installation environment, is beneficial to the miniaturization of the connector size and is convenient for high-density deployment of the connector; the male/female terminal terminals are arranged in rows in the corresponding terminal connector, ensuring high-speed performance of the connector.

Description

High-speed connector assembly and lock catch thereof

Technical Field

The invention belongs to the technical field of connectors, and particularly relates to a high-speed connector assembly and a lock catch thereof.

Background

With the development of miniaturization, high density and high speed of high-speed connectors, low cost and high reliability are also important points, and the high-speed coaxial connectors on the market at present have low integration degree, and coaxial cables cannot be distributed in the connectors at high density, so that the high-speed performance cannot be realized. The locking structure for realizing the plugging and locking of the male-female end connectors adopts a retaining ring or a thread locking structure, the rotating track of the retaining ring is large, and the use in a narrow space is not facilitated; the thread locking is complex to operate and is not beneficial to quick plugging.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a high-speed connector assembly, terminals are distributed in rows in an insulator, the internal space of the connector is fully facilitated, the miniaturization design of the connector is facilitated, and the connector can adapt to a narrow operating environment by adopting a buckling structure of a lock catch.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. The high-speed connector assembly provided by the invention comprises a male end connector and a female end connector which are in adaptive insertion connection, wherein the male end connector comprises a male end insulator and male end terminals which are arranged in the male end insulator in rows, and two sides of the male end insulator are provided with lock catches; the female end connector comprises a female end insulator and female end terminals arranged in the female end insulator in rows, a female end shielding shell is arranged on the female end insulator, locking grooves corresponding to the locking buckles are formed in two sides of the female end shielding shell, and the locking buckles are connected with the locking grooves in a buckling mode to realize the insertion locking of the male end connector and the female end connector; after the inserting and locking, the female terminal and the male terminal are correspondingly contacted and conducted.

Furthermore, the lock catch comprises a movable part and a fixed part, one end of the movable part is connected with the fixed part, and the lock catch is of a U-shaped sheet structure; the male end insulator is provided with a mounting groove for mounting the lock catch, two sides of the fixing part are oppositely provided with interference bulges, and the interference bulges are in interference fit with the inner wall of the mounting groove so as to realize the fixed assembly of the lock catch; the outer wall of movable part is protruding to be equipped with locking portion, locking portion be used for with the locked groove locking cooperation, the other end of movable part is equipped with the unlocking portion.

Furthermore, two sides of the fixing part are symmetrically provided with retaining shoulders which are positioned above the interference bulges at the corresponding sides; the installation groove is internally provided with steps which correspond to the stop shoulders one to one, and when the lock catch is installed, the stop shoulders and the steps are matched in a stop manner in the installation direction of the lock catch, so that the installation and the limitation of the lock catch are realized.

Further, the lower end of the locking part is provided with a guide inclined surface.

Further, the upper end of the lock portion is a flat surface.

Furthermore, the unlocking part is formed by bending and extending the other end of the movable part obliquely and then bending and extending the other end upwards, so that the distance between the unlocking part and the fixed part is larger than the distance between the movable part and the fixed part.

Furthermore, the lock catches are symmetrically arranged on two sides of the male end insulator.

Furthermore, the male end connector also comprises a plurality of coaxial cables which are arranged out of the tail part of the male end insulator side by side, and one end of each coaxial cable is welded with the corresponding male end terminal.

Furthermore, a lock catch avoiding hole is formed in the side portion of the female-end insulator and is located on one side of the lock groove, so that the lock catch can enter the lock catch when the female-end insulator is inserted and locked.

The invention also provides a lock catch, which is used for locking the lock catch in any one of the high-speed connector assemblies.

By means of the technical scheme, the invention has the beneficial effects that: public end connector passes through the hasp and realizes locking fast with female end connector, realizes one step of locking, one step of unblock with the help of buckle structure, and convenient and fast just adapts to narrow and small connector installation environment, does benefit to the miniaturization of connector size, and the connector high density of being convenient for deploys. In addition, the male terminal and the female terminal are arranged in the corresponding end connector in a row mode, and the high-speed performance of the connector is improved.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means 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 understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic representation of a male end connector and a female end connector of the present invention prior to insertion.

Fig. 2 is a schematic diagram of the male end connector and the female end connector of the present invention after being inserted and locked.

Fig. 3 is a schematic view of the latch before it is installed on the male insulator.

Fig. 4 is a schematic view of the latch after it is installed on the male insulator.

Fig. 5 is a perspective view of the latch.

Figure 6 is a perspective view of the female end connector.

Fig. 7 is an enlarged view of a portion a in fig. 2.

Figure 8 is an exploded view of the female end connector.

Figure 9 is a top view of the female end connector.

Figure 10 is a cross-sectional view of the female end connector.

Fig. 11 is a forced fit of the female end shield shell and the female end insulator.

Fig. 12 is a perspective view of the female terminal.

FIG. 13 is a schematic view of a locating pin.

Fig. 14 is an exploded view of the male end connector.

Fig. 15 is an internal view of the male connector with the male shield removed.

Fig. 16 is an enlarged view of a portion B in fig. 15.

Fig. 17 is an exploded view of the shield blades prior to installation in the male end insulator.

Fig. 18 is a schematic view of the connection of a coaxial cable to a male terminal.

Fig. 19 is an enlarged view of a portion C in fig. 18.

Detailed Description

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

An embodiment of a high-speed micro coaxial connector assembly, as shown in fig. 1 to 19, includes a male terminal connector 1 and a female terminal connector 2 that are adapted to be plugged, where the male terminal connector 1 includes a male terminal shielding shell 11, a male terminal insulator 12 disposed in the male terminal shielding shell 11, male terminal 13 disposed in the male terminal insulator 12 in a row, and coaxial cables 14 connected to the male terminal 13 in a one-to-one correspondence; the diameter of the coaxial cable is 0.30mm, but the invention is not limited to this, and the wire diameter of the coaxial cable can be adaptively adjusted according to actual needs. Female end connector 2 includes female end insulator 21, female end shielding shell 22 and sets up in female end terminal 23 in female end insulator in a row, female end shielding shell 22 is installed on female end insulator 21, and female end connector 2 is installed on the PCB board, sets up the pad on the PCB board, and the pad corresponds with female end terminal to be connected.

In this embodiment, the female terminal 23 is integrally injection-molded with the female insulator 21 in an Insert Molding (Insert Molding) manner, so that the female terminal 23 can be orderly arranged in the female insulator 21, the coplanarity of all the terminals is extremely high, dense arrangement of the terminals is facilitated, and the high-speed transmission performance of the connector can be improved under the condition of effectively reducing the overall size of the connector. Referring to fig. 12, the female terminal 23 includes a soldering terminal 231, a fixing portion 232, and a contact terminal 233 connected in sequence; the welding end is horizontally extended and arranged and is used for being electrically connected with a bonding pad on a PCB, the fixing part is U-shaped, the fixing part is integrally embedded in the female end insulator, and the fixing part of the U-shaped structure enables the female end terminal to form a stable limiting fit relation with the female end insulator in the up-down direction, the left-right direction and the right-left direction by taking the direction shown in the figure 10 as a reference, so that the stability of the female end terminal is ensured, and the problem of terminal looseness in a frequent plugging scene is avoided; in other embodiments, the fixing portion may have an S-shape or a continuous S-shape. The fixed part 232 is connected to the one end of contact end 233, and the other end is the free end to make the contact end form the shell fragment structure, possess the elastic contact ability, contact end 233 wholly hangs and sets up in the terminal jack 3 of seting up in female end insulator 21. Preferably, the contact end 233 is S-shaped with a spring contact 234 in contact with the male terminal.

The female-end shielding shell 22 is fixedly assembled on the female-end insulator 21 in a forced assembly manner, as shown in fig. 8 and 11, the female-end shielding shell is of a rectangular frame structure, the left side and the right side of the female-end shielding shell 22 are provided with fixing plates 221 extending along the plugging and unplugging direction of the connector, barbs 2211 are symmetrically arranged on two sides of each fixing plate, and the barbs are in interference fit with the hole walls of the fixing holes 215 preset on the female-end insulator so as to realize the positioning of the female-end shielding shell; furthermore, the female end shielding shell is provided with a convex shoulder 2212 positioned above the barb, and the convex shoulder and the female end insulator are in stop fit in the forced installation direction, so that the mounting and limiting of the female end shielding shell are realized. The female end shielding shell is of a rectangular frame structure, as shown in fig. 8, the front side and the rear side of the female end shielding shell 22 are provided with shielding side plates 222 which are bent downwards and extend (extend towards the direction of the PCB), the two shielding side plates which are distributed oppositely are connected between the fixing parts at the left side and the right side, the bottom of each shielding side plate is provided with a plurality of shielding pins 223 which are distributed and arranged, and the shielding pins are used for being welded with grounding holes or grounding pads on the PCB. In order to further improve the installation stability of the female-end shielding shell, the left side and the right side of the female-end shielding shell 22 are provided with inserting pieces 224, correspondingly, slots 211 are formed in the female-end insulator 21, interference convex points matched with the inner walls of the slots are arranged on two sides of the inserting pieces, and the inserting pieces are in forced fit with the slots to achieve auxiliary positioning of the female-end shielding shell.

Female end insulator 21 is last to set up interval rib 4 along length direction extension, and one side of interval rib 4 is above-mentioned terminal jack 3, and the opposite side is shielding jack 5, and interval rib 4 separates terminal jack 3 and shielding jack 5 to the terminal that will be responsible for transmitting coaxial signal and the structure of being responsible for shielding ground connection keep apart each other, avoid the mistake to touch. One side of female end shielding shell 22 extends towards in shielding jack 5 and forms interior plate 225, be equipped with a plurality of female end shielding elastic claw 226 on the interior plate 225, constitute the centre gripping chamber between the shielding curb plate of interior plate and its place side, the mutual grafting cooperation of edge rib 2120 of centre gripping chamber and shielding jack 5 one side, set up on the edge rib and shield the corresponding hole 212 of dodging of female end shielding elastic claw position, dodge hole 212 and be used for holding female end shielding elastic claw 226 when female end shielding elastic claw is pegged graft the cooperation with public end shielding elastic claw.

The both sides of public end insulator 12 are equipped with hasp 6 respectively, and corresponding sets up the locked groove 7 with hasp 6 one-to-one snap-fit in the both sides of female end shielding shell 22, and the hasp keeps away the hole 210 has been seted up to the both sides of female end insulator 21 in addition, and the hasp keeps away the hole and is located one side of the locked groove of homonymy to supply when inserting to close the locking the hasp gets into the hasp and keeps away the hole. Referring to fig. 5, the latch 6 includes a movable portion 61 and a fixed portion 62 connected to each other, one end of the movable portion 61 is connected to the fixed portion 62 to make the latch have a U-shaped plate structure, that is, the movable portion and the fixed portion are parallel to each other, and the connecting portion of the movable portion and the fixed portion is a bending section; the male end insulator 12 is provided with a mounting groove 121 for mounting the lock catch, two sides of the fixing part 62 are oppositely provided with interference protrusions 621, and the interference protrusions 621 are in interference fit with the inner wall 1211 of the mounting groove 121 to realize the fixed assembly of the lock catch; the protruding locking portion 63 that is equipped with of outer wall of movable part 61, locking portion are used for keeping off with the locked groove and stopping the cooperation in deviating from the direction of inserting to close, realize that public mother locks spacingly. The other end of the movable part 61 is provided with an unlocking part 64, the unlocking part 64 is formed by bending and extending the top end of the movable part obliquely outwards and then bending and extending upwards, so that the distance between the unlocking part and the fixed part is greater than the distance between the movable part and the fixed part, and the unlocking by force application is facilitated. When unlocking, the unlocking part 64 is pressed to drive the movable part to elastically deform inwards, so that the locking part 63 is separated from the locking groove 7, and unlocking is realized. Preferably, the lower end of the locking part is provided with a guide inclined surface 631, so that when the male end connector is inserted, the movable part is compressed inwards under the acting force of the female end shielding shell, and after the movable part reaches the locking position, the movable part is elastically deformed and enters the locking groove; the upper end of the unlocking part is a plane 632 to avoid mistaken unlocking. Further, two sides of the fixing portion 62 are symmetrically provided with a retaining shoulder 622, and the retaining shoulders are located above the interference protrusions 621 on the corresponding sides; the mounting groove 121 is provided with steps 1212 corresponding to the shoulders one by one, and when the lock catch is mounted, the shoulders and the steps are matched in a blocking manner in the mounting direction of the lock catch, so that the mounting and limiting of the lock catch 6 are realized.

Preferably, a positioning pin 213 is convexly disposed on a surface of the female terminal insulator 21 facing the PCB, and the positioning pin 213 is matched with a positioning hole preset on the PCB to achieve guiding and positioning of the female terminal connector. Female end insulator 21 still sets up a plurality of auxiliary positioning key 214 along the ascending front and back side of length direction, sets up auxiliary positioning groove 227 on the shielding curb plate of female end shielding shell 22, realizes the guide assembly and the assembly spacing of female end shielding shell through the keyway cooperation.

In this embodiment, the male terminal 13 is preferably formed integrally with the male insulator 12 by insert molding, so as to ensure stability and coplanarity of the male terminal in the case of high-density terminal deployment. Referring to fig. 14, the male shielding shell 11 is a flattened rectangular conductive shell, and the male insulator is inserted into the male shielding shell for fixation, and both are in interference fit or connected and positioned through a snap structure. Coaxial cables 14 are arranged in a row, all coaxial cables 14 are all arranged in tail insulating sleeve 15 in a penetrating mode, and tail insulating sleeve 15 is fixed at the rear end of male end insulator 12, so that the tail of the male end connector is sealed, and certain tensile capacity can be provided for coaxial cables 14. After the connecting end of the coaxial cable 14 is penetrated through the tail insulator, the coaxial cable is peeled off to expose the shielding layer 141 inside the coaxial cable, and then the shielding layer 141 is soldered between the upper conductive strip 16 and the lower conductive strip 17. As shown in fig. 19, soldering tin is disposed on the opposite surfaces of the upper and lower conductive strips, and then a row of shielding layers are soldered and fixed in the soldering tin layer 18 between the two conductive strips after heating, so that the shielding layers of all coaxial cables are electrically connected to each other. Further, the connection end of the coaxial cable has a core 142 stripped off, and the core 142 is soldered to the upper surface of the terminal 131 of the male terminal 13. The male terminal is of an L-shaped sheet structure and comprises a wiring terminal 131 and an inserting terminal 132 which are perpendicular to each other, the wiring terminal and the inserting terminal are bent and transited, the inserting terminal and the wiring terminal are fixedly embedded in the male terminal insulator, and the inserting terminal 132 is used for being in contact with a contact end 233 of the female terminal after the male connector and the female connector are inserted.

The lower extreme of public end insulator 12 is equipped with shielding piece 19, and shielding piece 19 both sides are equipped with jack catch 191, offer on the public end insulator 12 with jack catch interference fit's jack catch groove 122, shielding piece 19 fixes in public end insulator 12 below with the help of the jack catch mode of forced fit. The shielding plate 19 is provided with a plurality of first conductive elastic pieces 192 protruding toward the lower conductive strip 17, and after the shielding plate 19 is installed in place, the first conductive elastic pieces 192 elastically contact the lower conductive strip 17, so as to realize shielding conduction between the shielding plate and the lower conductive strip. One end of the shielding piece 19 is provided with a plurality of male shielding elastic claws 193, the male shielding elastic claws 193 are distributed along the length direction of the shielding piece, and the male shielding elastic claws are formed by bending one end of the shielding piece downwards and extending and then bending upwards so as to form U-shaped male shielding elastic claws, and the male shielding elastic claws 193 are used for being in elastic contact conduction with the female shielding elastic claws 226. As shown in fig. 17, two rows of distributed contacts are disposed on the male end connector, one row is a male end terminal, the other row is a male end shielding spring claw, and the two rows of contacts form a two-row plug structure, and correspond to the terminal jacks and the shielding jacks in the female end connector one to one.

Preferably, in order to protect the welding point position where the male terminal is welded with the core of the coaxial cable, an insulating protection plate 110 is fixedly arranged in the male terminal insulator, and the insulating protection plate 110 covers the upper part of the terminal. As a further improvement, a flat cable core slot is formed in one surface of the insulating protective plate 110 facing the wiring end, and a cable core of a coaxial cable is arranged in each core slot. In this embodiment, the insulating protection plate 110 is made of UV glue, and is fixed to the male end insulator by adhesion. In addition, the tail insulating sleeve 15 is formed after the UV glue is cured. In addition, the male-end shielding shell is convexly provided with a plurality of second conductive elastic sheets 111 towards the direction of the upper conductive strip, and the second conductive elastic sheets are elastically contacted with the upper conductive strip 16 to realize the shielding conduction between the male-end shielding shell and the shielding layer of the coaxial cable; furthermore, the contact position of the second conductive elastic sheet and the upper conductive strip is welded, so that the contact stability of the male-end shielding shell and the upper conductive strip can be improved, and the positioning of the male-end shielding shell is facilitated; similarly, the first conductive elastic sheet can be soldered by tin penetration.

As shown in fig. 10, preferably, the top end of the spacing rib 4 is convexly provided with a limiting platform 41 towards the contact end 233 direction of the female terminal, the limiting platform 41 is provided with a row of guiding through grooves 42 along the length direction thereof, as shown in fig. 9, the number of the guiding through grooves is consistent with that of the female terminal, the contact end of the female terminal is located right below the corresponding guiding through groove, in the inserting and closing process of the male and female connector, the male terminal firstly passes through the guiding through groove and then elastically contacts with the corresponding female terminal, and the guiding through groove plays a role in guiding and inserting and closing the male terminal. In addition, the setting height of spacing platform is higher than female end shielding shell, inserts to close when locking with public end insulator butt also can realize the male end connector insert the limit action that closes.

After the male end connector is inserted into the female end connector, the male end terminal and the female end terminal are in mutual elastic contact in the terminal jack, and transmission of coaxial signals is achieved; public end shielding elastic claw and female end shielding elastic claw each other elastic contact in the shielding jack realizes the shielding ground connection of public female bi-polar and switches on, and public end shielding shell and female end shielding shell each other contact have further promoted the shielding effect of high-speed superfine coaxial connector subassembly simultaneously for transmission signal's in-process forms three-dimensional full enclosure shield in the circumference of public, female terminal cooperation district, has ensured the high speed performance of connector subassembly.

The embodiment of the latch of the present invention, i.e. the latch described in the above-mentioned high-speed ultrafine coaxial connector component, is not described herein again in detail.

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

1. High-speed connector subassembly, including male end connector and the female end connector of looks adaptation grafting, its characterized in that: the male end connector comprises a male end insulator and male end terminals arranged in the male end insulator in rows, and two sides of the male end insulator are provided with lock catches; the female end connector comprises a female end insulator and female end terminals arranged in the female end insulator in rows, a female end shielding shell is arranged on the female end insulator, locking grooves corresponding to the locking buckles are formed in two sides of the female end shielding shell, and the locking buckles are connected with the locking grooves in a buckling mode to realize the insertion locking of the male end connector and the female end connector; after the inserting and locking, the female terminal and the male terminal are correspondingly contacted and conducted; the lock catch comprises a movable part and a fixed part, one end of the movable part is connected with the fixed part, and the lock catch is of a U-shaped sheet type structure; the male end insulator is provided with a mounting groove for mounting the lock catch, two sides of the fixing part are oppositely provided with interference bulges, and the interference bulges are in interference fit with the inner wall of the mounting groove so as to realize the fixed assembly of the lock catch; the outer wall of the movable part is convexly provided with a locking part which is used for locking and matching with the locking groove, and the other end of the movable part is provided with an unlocking part; the two sides of the fixing part are symmetrically provided with retaining shoulders which are positioned above the interference bulges at the corresponding sides, the mounting groove is internally provided with steps corresponding to the retaining shoulders, and the retaining shoulders and the steps are in retaining fit in the mounting direction of the lock catch so as to realize the mounting limit of the lock catch.

2. The high speed connector assembly of claim 1, wherein: the lower end of the locking part is provided with a guide inclined surface.

3. The high speed connector assembly of claim 1, wherein: the upper end of the locking part is a plane.

4. The high speed connector assembly of claim 1, wherein: the unlocking part is formed by bending and extending the other end of the movable part obliquely and then bending and extending the other end of the movable part upwards, so that the distance between the unlocking part and the fixed part is larger than the distance between the movable part and the fixed part.

5. The high speed connector assembly of claim 1, wherein: the lock catches are symmetrically arranged on two sides of the public end insulator.

6. The high speed connector assembly of claim 1, wherein: the male end connector also comprises a plurality of coaxial cables which are arranged out of the tail of the male end insulator side by side, and one end of each coaxial cable is welded with the corresponding male end terminal.

7. The high speed connector assembly of claim 1, wherein: the side part of the female end insulator is provided with a lock catch avoiding hole which is positioned on one side of the lock groove so as to be convenient for the lock catch to enter when the female end insulator is plugged and locked.

8. Hasp, its characterized in that: the latch is a latch included in the high-speed connector assembly of any one of claims 1 to 7.