CN104505618B - Contact pin and the electric connector and connector assembly using the contact pin - Google Patents

Abstract

The present invention relates to a contact pin, an electrical connector and a connector assembly using the contact pin, a connector assembly plug and a socket, the plug includes a contact pin, the contact pin includes a contact pin body provided with a contact insertion structure at the front end, and the socket includes a contact plug The socket includes a socket body with a socket insertion structure at the front end: the pin insertion structure includes at least two circumferentially spaced head ends connected to the pin body, and ends elastically suspended forward The elastic conductive claws, the socket insertion structure includes a rigid sleeve whose axis extends along the front and rear directions, and the front end of each elastic conductive claw is provided with an outer protrusion for sliding contact with the hole wall of the rigid sleeve. The invention solves the problem in the prior art that the radial dimension of the insertion hole is relatively large due to the use of the elastic insertion hole.

Description

Pins and electrical connectors and connector assemblies using the pins

technical field

The present invention relates to a contact pin for electrical signal transmission, an electrical connector and a connector assembly using the contact pin.

Background technique

The existing connector assembly includes a plug and a socket. Both the plug and the socket can be called an electrical connector. The electrical connector includes a metal shell with a plug-in end at the front end. An insulator is arranged in the metal shell, and at least two A contact, for two mating connectors (i.e. plug and socket), the contact includes a plug end located inside the insulator and a wire connection end located between the insulator, and the contact on one of the electrical connectors The piece is a pin, and the contact on the other electrical connector is a jack. In order to ensure the insertion effect of the pin and the jack, the jack is generally an elastic contact with a crown spring hole structure. When the plug and socket are plugged in, the plug-in end on the metal shell of the plug and the plug-in end on the metal shell of the socket are guided to plug in, and the pin and the socket start to be mated, and the plug-in process of the plug and socket is finally completed . The existing problem of this kind of electrical connector is: the structural size of the electrical connector is relatively large, and the reasons for the large structural size of the electrical connector are 1. the existence of the metal shell; 2. the gap between two adjacent contacts. The distance between the wire connection ends of the contact piece should not be too small, because the wire connection ends of the contacts are located outside the insulator, the creepage distance between the wire connection ends of two adjacent contacts is limited, and the distance between the wire connection ends of two adjacent contacts should not be too small , so this will increase the structural size of the entire insulator; 3. The socket of the crown spring hole structure will lead to a larger diameter of the socket, which will increase the structural size of the insulator and increase the structural size of the entire product.

Contents of the invention

The object of the present invention is to provide a kind of elastic pin to solve the problem in the prior art that the radial dimension of the socket is larger due to the use of the elastic socket; the purpose of the present invention is also to provide a Electrical connectors and connector assemblies.

In order to solve the above problems, the technical solution of the pin insertion in the present invention is:

The pin includes a pin body provided with a plug-in structure at the front end. The plug-in structure includes at least two elastic conductive claws whose head ends are connected to the pin body and whose ends are elastically cantilevered forward. The front ends of the elastic conductive claws are all provided with external protrusions for sliding contact with the hole wall of the adapter socket.

The front end surface of the outer protrusion is a tapered surface whose diameter gradually increases from front to back.

The pin body is provided with an annular boss on the rear side of the first end of the elastic conductive claw, and the pin body is provided with a non-rotation square plate on the rear side of the annular boss for fitting between two adjacent insulating partitions. , An installation gap for the corresponding positioning spring is formed between the annular boss and the anti-rotation square plate.

The annular boss is provided with a positioning groove for positioning and cooperating with the positioning protrusion on the positioning spring.

The technical scheme of the electrical connector in the present invention is:

The electrical connector includes a pin. The pin includes a pin body provided with a plug-in structure at the front end. The front end of each elastic conductive claw is provided with an outer protrusion for sliding contact with the hole wall of the adapter socket.

The front end surface of the outer protrusion is a tapered surface whose diameter gradually increases from front to back.

There are multiple pins, and each pin is arranged in a "one" shape extending along the left and right directions. The electrical connector also includes an insulator, and the insulator is provided with pin mounting holes for the pins to be installed. The connecting end of the wire other than the above insulator, the insulator is provided with an insulating partition between two adjacent wire connecting ends, the pin body is provided with an annular boss on the rear side of the head end of the elastic conductive claw, and the pin body is on the The rear side of the ring-shaped boss is provided with a stop-rotating square plate for fitting between two adjacent insulating partitions, and an installation gap is formed between the ring-shaped boss and the stop-rotating square plate for the installation of the corresponding positioning spring. The positioning spring includes The ring body sleeved on the pin and the front end are integrated with the ring body, the rear end is elastically overhanging away from the ring body, and is positioned and matched with the positioning groove on the wall of the pin installation hole to limit the backward movement of the pin Limit claw.

The technical scheme of the connector assembly in the present invention is:

A connector assembly, a plug and a socket, the plug includes a pin, the pin includes a pin body with a pin insertion structure at the front end, the socket includes a jack, and the jack includes a jack body with a jack insertion structure at the front end, The pin insertion structure includes at least two elastic conductive claws whose head ends are connected to the pin body and whose ends are elastically overhanging forward, which are arranged at intervals around the circumference. The front end of each elastic conductive claw is provided with an outer protrusion for sliding contact with the hole wall of the rigid sleeve.

The front end surface of the outer protrusion is a tapered surface whose diameter gradually increases from front to back.

There are multiple pins, and each pin is arranged in a "one"-shaped structure extending in the left and right directions. The plug also includes a plug insulator, and the plug insulator is provided with a pin mounting hole for the pin to be installed. The wire connection end other than the plug insulator, the plug insulator is provided with an insulating partition between two adjacent wire connection ends, the pin body is provided with an annular boss on the back side of the elastic conductive claw head end, the pin body On the rear side of the ring-shaped boss, there is an anti-rotation square plate for fitting between two adjacent plug insulation partitions, and an installation gap is formed between the ring-shaped boss and the anti-rotation square plate for the installation of the corresponding positioning spring. The positioning spring includes an annular body sleeved on the pin, and the front end is integrally set with the annular body, and the rear end is elastically suspended in a direction away from the annular body, and is positioned and matched with the positioning groove on the wall of the pin installation hole to limit the direction of the pin. Rear movement limit claw.

The beneficial effects of the present invention are: when plugs and sockets are plugged in, the outer projections on the elastic conductive claws on the pins are in sliding contact with the hole walls of the rigid sleeve of the socket, and the hole walls of the rigid sleeve press against The outer protrusion makes the elastic conductive claws produce radial elastic deformation, so as to ensure the reliable contact between the pin and the socket. By using the elastic pin to cooperate with the rigid socket, the radial size of the socket can be reduced. Thus reducing the radial dimension of the socket.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of a connector assembly in the present invention;

Fig. 2 is a schematic structural view of the plug insulator in Fig. 1;

Fig. 3 is a schematic diagram of the structure of the pin in Fig. 1;

Fig. 4 is a structural schematic diagram of the pin insertion structure in Fig. 1;

Fig. 5 is a structural schematic diagram of the jack plug structure in Fig. 1 .

detailed description

The embodiment of the connector assembly is shown in Figures 1 to 5: it includes a plug 6 and a socket 8, the plug includes a plug insulator 12 and a plurality of pins 4, the pins include a pin body with a pin insertion structure at the front end, and the plug insulator There are pin installation holes 15 corresponding to the pins 4 one by one. The pin insertion structure is located in the pin installation holes. The pins also include a plug wire connection end located outside the plug insulator. The plug insulator is on the adjacent A plug insulation partition 2 is integrally injection-molded between the connection ends of the two plug wires. The pin is provided with a plug anti-rotation square plate 3 for anastomosing between two adjacent plug insulating partitions between the pin insertion structure and the plug wire connection end, and the pin is on the front of the plug anti-rotation square plate. There is a plug positioning spring on the side, and the plug positioning spring includes a plug ring body that is sleeved on the pin, and the front end is integrated with the plug ring body, and the rear end is elastically suspended in the direction away from the plug ring body and is on the wall of the pin installation hole. The positioning groove of the positioning groove is positioned and matched to limit the backward movement of the pin. The pin body is provided with an annular protrusion on the front side of the plug ring body to stop and cooperate with the plug ring body to limit the forward movement limit of the plug positioning spring. Platform 18, a positioning groove 19 is provided on the annular boss, and a positioning protrusion that matches with the positioning groove is provided on the plug annular body. There are at least two axial splitting grooves 17 whose front end extends to the front face of the pin sleeve and the rear end extends to the front side of the annular boss around the circumference of the sleeve wall of the barrel, and the axial splitting slots the pin sleeve Separated into a plurality of elastic conductive claws whose head ends are connected to the pin body and whose ends are elastically overhanging forward. The front end surface of the protrusion is a tapered surface whose diameter gradually increases from front to back. The socket includes a jack 10, the jack includes a jack body, the socket insulator 11 is provided with jack installation holes corresponding to the jacks one by one, and the front end of the jack body is provided with a jack insertion structure located in the jack installation hole, The jack also includes a socket wire connection end located outside the socket insulator, and a socket insulation partition is integrally molded between two adjacent socket wire connection ends on the socket insulator, wherein the socket and the socket insulation partition, the socket and the socket The matching relationship between the hole mounting hole is the same as the matching relationship between the pin and the plug insulating partition, and between the pin and the pin mounting hole, and will not be described in detail here. The jack insertion structure of the jack contact includes the axis extending along the front and rear directions. rigid sleeve. The plug insulator includes an insulating sleeve located on the periphery of each pin insertion structure. The sleeve wall of the insulating sleeve is provided with an anti-mistake slot 1, and the socket insulator is provided with an anti-mis-insertion protrusion adapted to the anti-mistake slot. 7. There is an annular space between the insulating sleeve and the pin insertion structure for mating with the socket insulator. The left and right ends of the plug insulator are respectively provided with a plug guide installation hole 16, and the plug also includes a plug guide that is loaded into the plug guide installation hole from back to front by a strong barb of the plug. The rear end of the plug guide is screwed with a Plug lock nut 5. In this embodiment, the plug guide has a guide sleeve structure. When in use, the plug guide is loaded into the plug guide installation hole from back to front, and the front slope of the strong barb plays a guiding role, and the strong The rear end of the barb will cooperate with the wall of the hole wall of the plug guide installation hole to push and limit, and then the plug guide is fixed on the plug insulator by screwing the plug lock nut on the rear end of the plug guide. The left and right ends of the socket insulator are respectively provided with socket guide mounting holes, and socket guides 9 are arranged in the socket guide mounting holes. In this embodiment, the socket guide has a guide pin structure adapted to the plug guide, and the socket guide The fixing form of the plug guide is the same as that of the plug guide, and will not be described in detail here.

The assembly process of the pin is: set the plug positioning spring on the pin between the annular boss and the plug anti-rotation square plate, and then install the pin into the corresponding pin mounting hole from back to front. When the anti-rotation square plate of the plug is in contact with the rear edge of the pin installation hole, the limit claw of the plug positioning spring is stuck in the positioning groove on the wall of the pin installation hole to prevent the pin from moving backward, so as to realize the insertion Pin installation, pin installation is simple and convenient. When the plug is plugged into the socket, the plug guide and the socket guide are first guided and matched, and then the front end of the socket insulator is inserted into the annular space of the plug insulator, and finally the pin is reliably inserted into the socket. The insulating partition set on the insulator can increase the creepage distance between the wire connection ends of two adjacent pins and sockets, thereby reducing the distance between the two contacts and helping to reduce the structural size of the entire product ; There is an annular space between the insulating sleeve and the pin insertion structure for mating with the socket insulator of the socket, and the insertion is realized through the insulator, without the need for a metal shell, and the insulator is located in the entire electrical connector shell. It helps to further reduce the size of the entire product; the anti-rotation square plate cooperates with the positioning spring to realize the fixing of the pins and sockets, and the fixing of the pins and sockets is simple and convenient.

In other embodiments of the connector assembly: plug guides and socket guides may not be provided; anti-mis-insertion protrusions and anti-mis-insert slots may not be provided; pins may also be fixed on the plug insulator in other structures, For example, on the hole wall of the pin installation hole, a mounting step that restricts the forward movement of the pin is set, and then a pressure plate that restricts the backward movement of the pin is fixed at the rear end of the plug insulator; each pin may not be in the shape of a "one" Arrangement, such as multi-line arrangement or scattered arrangement.

Embodiments of the electrical connector are shown in FIGS. 1-5 : the specific structure of the electrical connector is the same as the plug described in the embodiments of the above-mentioned connector assemblies, and will not be described in detail here.

Embodiments of the pins are shown in FIGS. 1-5 : the specific structures of the pins are the same as those described in the embodiments of the above-mentioned connector assemblies, and will not be described in detail here.

Claims (6)

1. contact pin, including front end are provided with the contact pin body of connected structure, it is characterised in that：Connected structure include at least two around Circumferentially spaced head end is connected with the contact pin body, endwise resiliently overhanged elastic conduction pawl, each elastic conduction The front end of pawl is provided with the outer lug coordinated for the hole wall sliding contact with being adapted to jack；In elastic conduction on contact pin body It is provided with annular boss, contact pin body to be provided with rear side of annular boss on rear side of pawl head end and loads corresponding phase for coincideing Rotation stop square plate between adjacent two insulating barriers, forms the peace installed for corresponding retaining spring between annular boss and rotation stop square plate Gap is filled, the rotation stop square plate has two sides opposing, for coordinating with two neighboring insulating barrier block, rotation stop side Disk has four corners for being used to along block coordinate with the hole of contact pin mounting hole rear end.

2. contact pin according to claim 1, it is characterised in that：The front end face of the outer lug for diameter from front to back gradually Become big taper surface.

3. contact pin according to claim 1 or 2, it is characterised in that：Be provided with the annular boss for it is described fixed The locating slot of positioning convex location fit on the spring of position.

4. electric connector, including contact pin, contact pin include the contact pin body that front end is provided with connected structure, it is characterised in that：Grafting Structure includes at least two around circumferentially spaced head end with the contact pin body being connected, endwise resiliently overhanged elasticity Conductive pawl, the front end of each elastic conduction pawl is provided with the outer lug coordinated for the hole wall sliding contact with being adapted to jack；Insert Pin has multiple, and each contact pin is arranged in " one " character form structure extended in left-right direction, and electric connector also includes insulator, insulator On be provided with for the contact pin install contact pin mounting hole, contact pin include be located at the insulator outside wire connecting ends, absolutely It is provided with edge body between two neighboring wire connecting ends on insulating barrier, contact pin body in the rear side of elastic conduction pawl head end Be provided with annular boss, contact pin body be provided with rear side of annular boss load for coincideing two neighboring insulating barrier it Between rotation stop square plate, between annular boss and rotation stop square plate formed for corresponding retaining spring install installation gap, the rotation stop Square plate has two sides opposing, for coordinating with two neighboring insulating barrier block, and rotation stop square plate, which has four, to be used for The corner coordinated with the hole of contact pin mounting hole rear end along block, retaining spring includes ring body and the front end being sheathed on contact pin It is wholely set with ring body, rear end is towards away from the ring body direction resiliently overhanged locating slot with contact pin mounting hole hole wall Location fit patches the spacing bullet pawl that pin is moved backwards to limit.

5. electric connector according to claim 4, it is characterised in that：The front end face of the outer lug is diameter from front to back The taper surface become larger.

6. connector assembly, including plug and socket, plug include contact pin, contact pin is provided with contact pin connected structure including front end Contact pin body, socket includes jack, and jack includes the jack body that front end is provided with jack connected structure, it is characterised in that：Insert Pin connected structure is connected including at least two around circumferentially spaced head end with the contact pin body, endwise resiliently overhanged Elastic conduction pawl, jack connected structure includes the rigid sleeve that extends along the longitudinal direction of axis, the front end of each elastic conduction pawl It is provided with the outer lug coordinated for the hole wall sliding contact with rigid sleeve；Contact pin has multiple, and each contact pin is arranged in along a left side " one " character form structure of right direction extension, plug also includes being provided with plug insulator, plug insulator for contact pin peace The contact pin mounting hole of dress, contact pin includes being located on the wire connecting ends outside the plug insulator, plug insulator in adjacent It is provided between two wire connecting ends on insulating barrier, contact pin body and is provided with convex annular on rear side of elastic conduction pawl head end The rotation stop loaded for coincideing between two neighboring plug insulating barrier is provided with platform, contact pin body on rear side of annular boss Square plate, forms the installation gap installed for corresponding retaining spring between annular boss and rotation stop square plate, the rotation stop square plate has Two sides opposing, for coordinating with two neighboring insulating barrier block, there are rotation stop square plate four to be used for and contact pin is pacified The corner that the hole of dress hole rear end coordinates along block, retaining spring includes the ring body being sheathed on contact pin and front end and annular originally Body is wholely set, rear end is towards away from the resiliently overhanged locating slot location fit with contact pin mounting hole hole wall in ring body direction The spacing bullet pawl that pin is moved backwards is patched to limit.