CN110212343B

CN110212343B - High-speed connector and jack contact

Info

Publication number: CN110212343B
Application number: CN201811451892.1A
Authority: CN
Inventors: 王炎; 王芹; 谢亚军
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2020-12-04
Anticipated expiration: 2038-11-30
Also published as: CN110212343A

Abstract

The invention relates to a high-speed connector and a jack contact. The jack contact element comprises a base body, wherein pins used for being connected with a printed board are arranged on the base body, the base body is further connected with a jack contact section used for being plugged with a pin contact element of an adaptive connector, the jack contact section comprises four contact cantilevers which are uniformly arranged in the circumferential direction and can be elastically deformed in the radial direction, the contact cantilevers are provided with conductive contact parts used for being contacted with the adaptive pin contact element at positions close to one end, two opposite contact cantilevers form a cantilever pair, the cantilever pair is in one-side position connection with the conductive contact parts in the back direction and forms a fork-shaped structure, at least one of the two cantilever pairs is provided with a slot extending in the plugging direction at the one-body connection position, and the two cantilever pairs are plugged through the slot and are in conductive connection. Compared with the jack contact piece formed by stamping and bending in the prior art, the jack contact piece has high precision and low manufacturing cost of a production die, thereby reducing the manufacturing cost.

Description

High-speed connector and jack contact

Technical Field

The invention relates to the technical field of connectors, in particular to a high-speed connector and a jack contact element.

Background

A high-speed connector is a common signal transmission connector, and is commonly used to connect between a backplane and a daughter board. The high-speed connector has small size, high signal transmission density and higher requirement on the reliability of a contact.

In the prior art, in order to enhance the contact reliability of contacts in high-speed connectors, various contact forms have appeared. If, the chinese utility model patent that the publication number is CN203553506U discloses a backplane connector (being equivalent to high-speed connector) that prevents signal crosstalk, this connector includes plastic part, metal support and a plurality of connection pieces of setting in the plastic part, and backplane connector still includes the shielding piece, has terminal and insulating piece, and in the insulating piece was inserted to the one end of terminal, the other end was connected with the plastic part, and the shielding piece setting is in the bottom of insulating piece. The connector ensures reliable contact in one direction by realizing connection through single-side contact when in use.

For another example, the connector with circuit board disclosed in chinese patent application publication No. CN101335409A includes an insulating fixing housing, an auxiliary fixing housing, a plurality of boards, a plurality of signal contacts, a plurality of press-fit pins, a plurality of square shields, and a plurality of circuit board transmission bodies, and is connected to the mating contacts by inserting the inner sides of the contact spring pieces. The connector further improves contact reliability with the mating contact in one direction by double-sided contact.

For another example, the chinese patent publication No. CN105977665B discloses a high-speed backplane receptacle connector having dual-contact differential signal terminals, the connector includes a plurality of pairs of differential signal terminals and a plurality of ground terminals, each differential signal terminal includes a first elastic contact arm and a second elastic contact arm, the first elastic contact arm forms a closed opening, the second elastic contact arm is located in the opening, the length of the first elastic contact arm is greater than that of the second elastic contact arm, and dual-contact connection is achieved through inner side surfaces of the first and second elastic contact arms and the mating contact member when the connector is in use. The connector improves signal transmission stability and contact reliability in one direction through a single-side multi-contact form.

For another example, a sheet-type contact, an electrical connector, and a printed board assembly disclosed in chinese patent application with application publication No. CN107104305A are disclosed, in which the sheet-type contact in the electrical connector includes a beam of a frame-shaped structure extending in the left-right direction, a press-fitting structure is provided on the lower side of the beam, the sheet-type contact is inserted into a slot of an insulator, conductive sheets are provided on the upper side of the beam and are oppositely disposed in the front-back direction and extend upward, the front portions of the conductive sheets oppositely disposed in the front-back direction are matched to form a contact portion of the contact, and an opening between the conductive sheets oppositely disposed in the front-back direction is matched. The connector further improves the signal transmission stability and the contact reliability in one direction by the form of double-sided multi-contacts.

In summary, the high-speed connector can elastically abut against the mating plug terminal in only one direction (e.g., left and right directions) by adopting the above-mentioned various contact forms. When the high-speed connector is in severe use environments such as high vibration, strong impact and the like, the contact element and the adaptive contact element in the high-speed connector are prone to shaking, the various contact elements cannot ensure that the other directions (such as the front and back directions) are elastically abutted against the adaptive contact element, the high-speed connector is easy to disengage from the adaptive contact element in the use process, and the contact reliability is low.

For this purpose, as shown in fig. 1, a socket contact is known from the prior art, which comprises a base body 01, on which base body 01 four contact beams 02 are provided, which extend in the plug-in direction, the four contact beams 02 enclosing a socket for plugging in a mating pin contact. The jack contact piece can be abutted with the adaptive pin contact piece in multiple directions, and the contact reliability of the jack contact piece and the pin contact piece is enhanced. When the jack contact element is produced, the progressive die is firstly used for punch forming, then the bending forming is carried out, the distance between the contact cantilevers after the final forming is closer, and the distance is smaller than the unfolding size of the contact cantilevers. Therefore, two or more material belts are often required to be superposed and combined in the production of the jack contact element, so that the interference between parts before bending and forming is avoided; because the size is little, there is great degree of difficulty in the shaping of bending, and the part resilience after bending can't be avoided, size and part deflection volume after guaranteeing the shaping improve product contact reliability, must improve the mould precision to the manufacturing cost of mould has been increased, and then has increased the manufacturing cost of jack contact.

Disclosure of Invention

The object of the invention is to provide a socket contact which is inexpensive to produce; it is also an object of the present invention to provide a high speed connector using the above-described receptacle contact.

In order to achieve the purpose, the technical scheme of the jack contact element is as follows:

the jack contact piece includes the base member, is equipped with the pin that is used for being connected with the printed board on the base member, still is connected with on the base member to be used for inserting the jack contact section that closes with the contact pin contact piece of adaptation, jack contact section includes four circumference evenly arranged can radially take place elastic deformation's contact cantilever, and the contact cantilever has the electrically conductive contact site that is used for contacting with the adaptation contact pin contact piece near one end position, and two contact cantilevers that set up relatively constitute the cantilever pair, and the cantilever pair is to forming Y-shaped structure to one side position body coupling at the electrically conductive contact site of dorsad, and at least one in two cantilever pairs has the slot that extends in the direction of inserting to closing in body coupling position, and two cantilever pairs are through slot cartridge and realize electrically conductive connection.

The beneficial effects are that: the jack contact section in the jack contact piece is formed by intersecting two fork-shaped cantilever pairs, and at least one cantilever pair is provided with a slot. Compared with the jack contact piece formed by stamping and bending in the prior art, the two cantilevers in the jack contact piece are oppositely stamped and fixed through the slots without bending, so that the formed contact piece is prevented from rebounding, the precision of the contact piece is ensured, the manufacturing cost of a production mold is low, and the manufacturing cost is reduced.

Furthermore, two contact cantilevers in each cantilever pair are of coplanar sheet-like structures, and the cantilever pairs are manufactured through integral punch forming. The cantilever pair is of a sheet-shaped structure, so that the elasticity of the cantilever pair is enhanced, and the abutting strength of the cantilever pair and the adaptive contact pin contact piece is further enhanced.

Further, the two cantilever pairs form a tight fit through the slots. The close fit of the two cantilever pairs improves the fixing strength of the two cantilever pairs and facilitates the conductive contact of the two cantilever pairs.

Furthermore, at least one side of the slot wall of one of the two cantilever pairs is provided with a convex structure, and the other cantilever pair is clamped through the convex structure when the other cantilever pair is inserted. At least one groove wall of the slot of one of the cantilever pairs is provided with a convex structure, and the two cantilever pairs are fixed through the convex structure, so that the deformation of the cantilever pairs is reduced.

Further, the base is integrally connected to one of the two cantilever pairs. The base body is integrally connected with one of the two cantilever pairs, so that the manufacturing difficulty of the contact piece is reduced.

Furthermore, the substrate and the cantilever integrally connected with the substrate are in a sheet-like structure and in the same plane. The base body and the cantilever pair integrally connected with the base body are of a sheet-shaped structure and can be manufactured through a stamping process, so that the processing difficulty is reduced.

The technical scheme of the high-speed connector is as follows:

the high-speed connector includes the connector housing and installs the jack contact spare in the connector housing, the jack contact spare includes the base member, is equipped with on the base member to be used for the pin of being connected with the printed board, still is connected with on the base member to be used for inserting the jack contact section of closing with the contact pin contact spare of adaptation, jack contact section includes four circumference evenly arranged can radially take place elastic deformation's contact cantilever, the contact cantilever has the electrically conductive contact position that is used for contacting with the adaptation contact pin contact spare near one end position, two contact cantilevers that set up relatively constitute the cantilever pair, the cantilever pair is to one side position body coupling at the electrically conductive contact position of back of the body and form Y-shaped structure, at least one of two cantilever pairs has the slot that extends in the direction of inserting in body coupling position, two cantilever pairs are through slot cartridge and realize electrically conductive connection.

The beneficial effects are that: the jack contact section in the jack contact piece in the high-speed connector is formed by intersecting two fork-shaped cantilever pairs, and at least one cantilever pair is provided with a slot. Compared with the jack contact piece formed by stamping and bending in the prior art, the two cantilevers in the jack contact piece in the high-speed connector are oppositely stamped and fixed through the slots without bending, so that the formed contact piece is prevented from rebounding, the precision of the contact piece is ensured, the manufacturing cost of a production mold is low, and the manufacturing cost is reduced.

Furthermore, the connector shell comprises a shell and an insulator, the jack contact piece and the insulator are integrally molded in an injection mode, and the integrally molded jack contact piece and the insulator are clamped in the shell. The fixing strength of the insulator and the socket contact is enhanced.

Drawings

FIG. 1 is a schematic diagram of a socket contact according to the prior art;

FIG. 2 is a schematic diagram illustrating a state of the high-speed connector and the adapter plug according to the present invention;

FIG. 3 is a schematic diagram of the high speed connector of FIG. 2;

FIG. 4 is a schematic view of the plug assembly of FIG. 2;

FIG. 5 is a schematic diagram of the construction of the receptacle contact of FIG. 3;

FIG. 6 is a schematic view of the first pair of suspension arms of FIG. 5;

FIG. 7 is a schematic view of the second pair of suspension arms of FIG. 5;

in the figure: 01-a substrate; 02-contact cantilever; 1-a plug; 11-pin contact; 12-an insulating base; 111-pin; 112-soldering pins; 2-a high-speed connector; 21-a receptacle contact; 211-a first pair of cantilevers; 212-a second pair of cantilevers; 213-solder pins; 214-a substrate; 215-contact cantilever; 216-bumps; 217-slot; 22-an insulator; 23-a card slot; 24-barbs.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

The first embodiment of the high-speed connector of the present invention, as shown in fig. 2, includes a connector housing and a receptacle contact 21.

The connector housing comprises a shell and an insulator 22 clamped with the shell, a plurality of through holes penetrating through the shell are formed in the shell, mounting holes corresponding to the through holes one by one are formed in the insulator 22, and a jack contact piece 21 is correspondingly mounted in each mounting hole. As shown in fig. 3, the insulator 22 has barbs 24 thereon, and the housing has a locking groove 23 for engaging the barbs to fix the insulator 22 with the socket contact 21 mounted thereon to the housing.

As shown in fig. 5, the socket contact 21 includes a base 214, the base 214 is a plate-like structure, the plate-like base 214 is fixed on the insulator 22, and a side of the plate-like base 214 facing away from the housing has soldering pins 213 extending outward for soldering with a printed circuit board. The soldering leads 213 in this embodiment are in a plate-like structure and are integrated with the base 214 for easy stamping. Of course, in other embodiments, the soldering pin 213 and the base 214 may be in a separate structure, and the separate soldering pin 213 and the base 214 are fixed by soldering. The side of the base 214 facing away from the solder pins 213 has a socket contact section comprising a first pair of arms 211 and a second pair of arms 212 intersecting each other. The first and second pairs of

cantilevers

211 and 212 each comprise two contact cantilevers 215, the four contact cantilevers 215 being arranged uniformly in the circumferential direction for enclosing a receptacle for plugging with an adapter pin, the inner sides of the contact cantilevers 215 having electrically conductive contact portions for electrically conductive contact with the adapter pin. The roots of the two contact cantilevers 215 of the first pair 211 and the two contact cantilevers 215 of the second pair 212 are integrally connected to form a fork structure.

As shown in fig. 6, the first cantilever pair 211 is a sheet-like structure with two coplanar contact cantilevers 215, and the root of the first cantilever pair 211 is integrally connected and coplanar with the base 214, so that the integrated first cantilever pair 211 and the base 214 are integrally formed through a stamping process; the first cantilever pair 211 has a slot 217 extending in the mating direction at a position where the two contact cantilevers 215 are integrally connected. As shown in fig. 7, the second pair of cantilevers 212 is a sheet-like structure with two contact cantilevers 215 coplanar so as to be integrally formed by a stamping process. The position where the two contact cantilevers 215 of the second pair of cantilevers 212 are connected is inserted into the slot 217 of the first pair of cantilevers 211, and the position where the two contact cantilevers 215 of the second pair of cantilevers 212 are integrally connected is inserted into the slot 217 of the first pair of cantilevers 211. The thickness of the insertion position of the second cantilever pair 212 and the insertion groove 217 is slightly larger than the width of the insertion groove 217, so that the tight fit of the first cantilever pair 211 and the second cantilever pair 212 is realized, the connection strength of the first cantilever pair 211 and the second cantilever pair 212 is enhanced, and the conductive contact of the first cantilever pair and the second cantilever pair is facilitated. In other embodiments, the thickness of the second pair of suspension arms 212 at the insertion position with the insertion slot 217 may be equal to or less than the width of the insertion slot 217, and in this case, the first and second pair of suspension arms may be fixed at the insertion position by welding. In other embodiments, the first and second pairs of cantilevers are provided with slots, the openings of the two slots are opposite to each other, and the first and second pairs of cantilevers are fixed by inserting the slots.

The slots 217 in the first pair 211 have inwardly extending protrusions 216 on both side walls for gripping the second pair 212 when the second pair 212 is inserted. In other embodiments, the protrusion 216 may be disposed on a side wall of the slot 217, and when the slot 217 is disposed on the second suspension arm pair 212, the protrusion 216 may be disposed on a side wall of the slot 217 of the second suspension arm pair 212. The protrusion 216 in this embodiment has one, but in other embodiments, the number of the protrusions may be multiple, or the protrusions are specifically protrusion segments extending along the plugging direction.

In this embodiment, the four contact cantilevers 215 are inwardly folded in the extending direction thereof, so that the end of the insertion hole surrounded by the four contact cantilevers 215 is a tapered structure, thereby enhancing the contact reliability with the mating pin. The conductive contact portions of the four contact cantilevers 215 that make conductive contact with the mating pin are lateral sides of the contact cantilevers 215 in the width direction. The contact cantilever 215 is subjected to a radial force applied by the pin when contacting the mating pin, and since the width of the contact cantilever 215 is much greater than its thickness, the lateral sides of the contact cantilever 215 in the width direction form conductive contact sites that enhance the compressive strength of the contact cantilever 215. The end of the four contact arms 215 facing away from the base 214 has radially outwardly inclined guide sections, each of which is enclosed in a flared configuration for guiding the mating pin into the receptacle.

In this embodiment, the insulator 22 is integrally formed by injection molding, and the socket contact 21 is placed in a mold before injection molding so that the insulator 22 and the socket contact 21 are fixed by injection molding, where the mold only performs a positioning function.

As shown in fig. 4, the plug 1 adapted to the high-speed connector 2 in the present embodiment includes a housing including a shell and an insulating base 12 fitted to the shell, the shell of the plug is fitted to the high-speed connector shell, and a pin contact 11 mounted in the insulating base. The pin contact comprises a welding pin 112 and a pin 111 which are used for being welded and fixed with a printed board, the pin 111 is a round pin, and the pin contact 11 corresponds to the jack contact in the high-speed connector 2 one by one. The socket contact 11 and the insulating base 12 in this embodiment are formed integrally by injection molding to form a pin member.

When the high-speed connector is used, the jack surrounded by each contact cantilever in the jack contact element of the high-speed connector 2 is inserted into the contact pin 111, the contact pin 111 is contacted with the side surface of each contact cantilever in the width direction, and each contact cantilever is elastically abutted to the contact pin 111 in multiple directions, so that the contact reliability of the high-speed connector and the contact pin is enhanced.

The second embodiment of the high-speed connector of the present invention is different from the first embodiment of the high-speed connector in that two contact cantilevers in the first and second cantilever pairs in the embodiment are both arranged in parallel, and compared to the first embodiment, the jack surrounded by the contact cantilevers in the embodiment does not form a necking structure, and the contact cantilever and the pin have small elastic abutting force and low contact reliability.

The third embodiment of the high-speed connector of the present invention is different from the first embodiment of the high-speed connector in that the position where the two contact cantilevers in the first cantilever pair are integrally connected is clamped by the two contact cantilevers of the second cantilever, so that the first and second cantilever pairs are fixed. In other embodiments, the location where the two contact cantilevers of the second cantilever pair are integrally connected is clamped by the two contact cantilevers of the first cantilever.

The fourth embodiment of the high-speed connector of the present invention is different from the first embodiment of the high-speed connector in that the first pair of suspension arms and the base body in the present embodiment are in a split structure, the base body in the present embodiment has a supporting surface, the supporting surface has a cross-shaped slot, the two pairs of suspension arms are correspondingly inserted into the slot, and the first and second pairs of suspension arms are fixed to the base body. In contrast to the first embodiment, the socket contact in this embodiment is more complex to assemble.

In other embodiments, the pair of suspension arms may not have protrusions.

In the specific embodiment of the socket contact element of the present invention, the structure of the socket contact element in this embodiment is the same as that of the socket contact elements in the above embodiments, and details are not repeated.

Claims

1. Jack contact piece, its characterized in that: the socket comprises a base body, pins used for being connected with a printed board are arranged on the base body, a socket contact section used for being plugged with a pin contact element of an adaptive connector is further connected to the base body, the socket contact section comprises four contact cantilevers which are uniformly arranged in the circumferential direction and can be elastically deformed in the radial direction, a conductive contact position used for being contacted with the adaptive pin contact element is arranged at a position close to one end of each contact cantilever, two contact cantilevers which are arranged oppositely form a cantilever pair, the cantilevers are integrally connected at a position on one side back to the conductive contact position to form a fork-shaped structure, two contact cantilevers in each cantilever pair are coplanar sheet-shaped structures, the cantilever pairs are manufactured through integral punch forming, at least one of the two cantilever pairs is provided with a slot extending in the plugging direction at an integral connection position, the two cantilever pairs are plugged through the slot and are electrically connected, and the four contact cantilevers, used for enclosing a jack which is plugged with the adaptive contact pin.

2. The socket contact of claim 1, wherein: the two cantilever pairs form a tight fit through the slots.

3. The socket contact of claim 2, wherein: and at least one side groove wall of the slot of one of the two cantilever pairs is provided with a convex structure, and the other cantilever pair is clamped through the convex structure when the other cantilever pair is inserted.

4. The socket contact of claim 1, wherein: the base is integrally connected to one of the two cantilever pairs.

5. The socket contact of claim 4, wherein: the substrate and the cantilever integrally connected with the substrate are in a sheet-shaped structure and are positioned in the same plane.

6. High-speed connector, including connector housing and install the jack contact piece in connector housing, its characterized in that: the socket contact is according to any one of claims 1 to 5.

7. The high-speed connector of claim 6, wherein: the connector shell comprises a shell and an insulator, the jack contact piece and the insulator are integrally molded in an injection mode, and the integrally molded jack contact piece and the insulator are clamped in the shell.