CN104300276A - Electric connector - Google Patents

Abstract

The invention relates to an electric connector comprising a housing, of which the front end is a plug end and which is made of plastics. The housing is internally provided with an installation hole extending along the front and back direction. The installation hole is provided with an insulator through an insulator installation structure. The hole wall of the installation hole and/or the peripheral surface of the housing are/is provided with a metal shielding layer. The housing of the electric connector is made of plastics; the hole wall of the installation hole and/or the peripheral surface of the housing are/is provided with the metal shielding layer to realize shielding function of the housing; and compared with the housing made of metal, the housing made of plastics is greatly reduced in weight, and meanwhile, the fabricating cost of the housing is reduced.

Description

an electrical connector

technical field

The present invention relates to electrical connectors for electrical signal transmission.

Background technique

Existing connectors generally include a metal shell with a front end as a plug-in end. Mounting holes extending in the front and rear directions are provided in the metal shell. Insulators are installed in the mounting holes through an insulator installation structure. The structure includes installation steps and retaining springs arranged at intervals before and after. The mounting steps cooperate with the front stop of the insulator to limit the forward movement limit of the insulator. In the circlip mounting groove provided on the hole wall. The problem with this existing connector is that although the shell made of metal material can shield the corresponding contacts, it also increases the weight and manufacturing cost of the connector, which is not conducive to the lightness and smallness of the connector. development; the existing installation structure of the insulator needs to use the retaining spring to limit the position of the insulator. The setting of the retaining spring not only further increases the weight of the connector, but also needs to process the annular retaining spring installation groove on the wall of the mounting hole. , which also increases the difficulty of the post-production of the shell, and increases the difficulty and cost of the connector. In addition, because the distance between the installation step and the retaining spring is fixed, in order to achieve a good fixing effect of the insulator, the insulator is placed in the front and rear The width in the direction must be the same as the distance between the installation step and the retaining spring, which requires the insulator to have high manufacturing precision, which further increases the manufacturing cost of the connector.

In addition, when the connector and the adapter connector are plugged in the prior art, the shells of the two connectors are butted, but due to the influence of processing and materials, the end faces of the metal parts are not complete planes, and electromagnetic waves will Leakage from the gap between the shells of the two connectors, although a conductive rubber pad can be added between the metal parts to achieve a shielding effect, but the conductive rubber pad is a material that is easy to wear and will increase the insertion force of the product.

Contents of the invention

The object of the present invention is to provide an electrical connector with a lighter housing.

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

An electrical connector, comprising a shell made of plastic with a plug-in end at the front end, a mounting hole extending along the front and rear directions is arranged in the shell, an insulator is installed in the mounting hole through an insulator mounting structure, and the hole wall of the mounting hole A metal shielding layer is provided on the top and/or on the outer peripheral surface of the housing.

The metal shielding layer is plated on the hole wall of the installation hole and/or the outer peripheral surface of the housing.

The plastic is composed of at least two single plastics.

The housing includes a front housing part and a rear housing part which are separated from the front and back, the rear housing part is screwed on the rear end of the front housing part, and the insulator installation structure includes The step surfaces on the front and rear shell parts face the opposite front and rear installation steps, and the step surfaces of the front installation steps cooperate with the front end of the insulator to press and limit the front end to limit the forward movement limit of the insulator, and the rear installation steps The stepped surface of the insulator cooperates with the pressure limit of the rear end of the insulator to limit the backward movement limit of the insulator.

An annular limit step is provided on the frontmost hole wall of the installation hole for fitting the plug-in end of the housing of the adapted electrical connector.

The beneficial effects of the present invention are: the housing of the electrical connector is made of plastic, and the shielding function of the housing is realized by arranging a metal shielding layer on the hole wall of the mounting hole and/or the outer peripheral surface of the housing. Compared with the shell made of metal, the weight of the shell is greatly reduced, and the manufacturing cost of the shell is also reduced.

Further, the housing includes front and rear housing parts which are separated from the front and back, and the insulator is fixed between the front and rear mounting steps on the front and rear housing parts, so that there is no need to set a circlip and a circlip mounting groove and other structures not only further reduce the weight of the shell, but also further reduce the manufacturing difficulty of the shell. More importantly, the rear insulator part is screwed on the front insulator part, which means that the front and rear installation steps The spacing between them is adjustable, and the requirement for the width precision in the front and rear direction of the insulator is not as high as before, which reduces the difficulty of making the insulator.

Description of drawings

Fig. 1 is the structural representation of embodiment 1 of the present invention;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the structural representation of guide pin in Fig. 1;

Fig. 4 is a schematic diagram of cooperation between the guide pin in Fig. 1 and the locking sleeve on the matching electrical connector after insertion;

Fig. 5 is a perspective view of Fig. 1;

Fig. 6 is a schematic diagram of cooperation between the annular limit step and the plug-in end of the housing of the adapter connector in Fig. 1;

Figure 7 is a schematic structural view of Embodiment 2 of the present invention;

Fig. 8 is the right view of Fig. 7;

Fig. 9 is a perspective view of Fig. 7;

Fig. 10 is a schematic structural view of the locking sleeve in Fig. 7 .

Detailed ways

An embodiment 1 of an electrical connector is shown in Figures 1 to 6: the electrical connector in this embodiment is a high-speed, low-frequency mixed in-line plug, including a shell made of composite plastic with the front end as the plug end, and the composite Plastic refers to the plastic compounded by at least two kinds of single plastics. The shell is a circular shell. The shell includes a front shell part 5 and a rear shell part 9 which are arranged in front and rear parts. The rear shell part is screwed on the At the rear end of the front housing part, a mounting hole extending along the front-rear direction is arranged in the housing, and a metal shielding layer is plated on the wall of the mounting hole and the outer peripheral surface of the housing. An insulator 7 is installed in the installation hole through an insulator installation structure. The insulator installation structure includes step surfaces respectively arranged on the front and rear shell parts facing the opposite front and rear installation steps, and the step surface 6 of the front installation step is pressed against the front end of the insulator. The limit fit is used to limit the forward movement limit of the insulator, and the step surface 8 of the rear installation step is pressed against the rear end of the insulator to limit the limit of the insulator to move backward. The insulator is provided with low-frequency pins 10, high-speed pins 11 and guide pins 1. The low-frequency pins are divided into two groups, and each group of low-frequency pins is symmetrically arranged on both sides of the high-speed pins and the guide pins. , the outer peripheral surface of the guide pin is provided with an annular locking groove 14, the front end of the locking groove is provided with a pin head 16, and the outer peripheral surface of the pin head includes a front guide surface 17 whose diameter gradually increases from front to back and from back to back. The rear guide surface 15 whose front diameter gradually becomes larger, the front guide surface is a straight surface, and the rear guide surface is an arc surface. When in use, the guide pin cooperates with the locking sleeve 12 of the adapter socket, and the locking sleeve has an inwardly protruding ring Elastic bumps. The frontmost hole wall of the installation hole is provided with an annular limit step 2 for the insertion end of the shell of the adapter socket to fit into, and the installation hole includes a blind insertion guide section 4 between the annular limit step and the insulator , the shape of the blind-mating guide section is a non-circular shape. The blind-mating guide section is conducive to the blind insertion when the plug is mated with the adapter socket. The corresponding position of the blind-mating guide section is provided with a plug color marking groove on the housing. 3.

The insulator of the adapter socket includes a blind mating section whose shape matches the shape of the blind mating guide section. Cooperate, because the guide section of the blind insertion is a non-circular shape, so even if you can't watch the plugging process of the plug and socket, you can make the plug connect with the socket at an accurate angle. With the continuous plugging of the plug and socket, the pin The front guide surface of the pin head cooperates with the sliding guide of the locking sleeve, and the front guide surface of the pin head squeezes the annular elastic protrusion of the locking sleeve to make the annular elastic protrusion radially expand and deform, so that the pin head passes through the annular elastic protrusion smoothly. When the annular elastic protrusion is snapped into the locking groove on the guide pin, and the plug and socket are inserted in place, the annular elastic protrusion will not come out of the locking groove when there is no external force, and the locking groove and the annular elastic protrusion The cooperation of the plug and socket achieves reliable insertion and locking of the plug and socket. When the plug and socket are plugged in place, the plug-in end of the socket housing is also inserted into the annular limit step of the plug housing, that is to say At this time, the shielding range of the shell of the plug and the shielding range of the shell of the socket have overlapping areas in the insertion direction, and the 360-degree contact of the corresponding contacts (pins, jacks) can be realized without the use of conductive rubber pads. Fully shielded. When it is necessary to separate the plug and the socket, apply a force in the backward direction to the plug. At this time, the rear guide surface of the pin head is slidably matched with the annular elastic protrusion of the locking sleeve, and the rear guide surface of the pin head squeezes the annular elastic protrusion. The ring-shaped elastic protrusion is radially expanded and deformed, so that the ring-shaped elastic protrusion of the locking sleeve is released from the locking groove to realize the unlocking and separation of the plug and socket. The rear guide surface is an arc surface, which helps to increase the plug, The unlocking force required when the socket is unlocked ensures that the plug and socket are not separated due to abnormal force.

In other embodiments of the electrical connector: the front and rear housing parts can also be an integrated structure, and the insulator installation structure includes installation steps and retaining springs arranged at intervals between the front and rear; the housing can also be made of a single plastic; The metal shielding layer can also be coated on the hole wall of the installation hole and the outer peripheral surface of the housing; of course, the metal shielding layer can only be provided on the hole wall of the installation hole or the outer peripheral surface of the housing; It may not be a high-speed and low-frequency mixed electrical connector, but an ordinary electrical connector; when the front and rear housing parts are integrated, the electrical connector may also be a square electrical connector.

Embodiment 2 of the electrical connector is shown in Figures 7 to 10: the difference between embodiment 2 and embodiment 1 is that the electrical connector in this embodiment is a high-speed, low-frequency mixed in-line socket, and the insulator of the socket is provided with a low-frequency The jack 19, the high-speed jack 20 and the locking sleeve 12, the insulator of the socket is provided with a non-circular structure of the blind mating section 23, the locking sleeve has an inwardly protruding annular elastic protrusion 13, the shell of the socket The plug-in end 22 of the body 18 is used to fit into the annular limit step on the housing of the plug when the socket and the plug are plugged in. Item 21 in the figure represents the color code slot of the socket set corresponding to the blind mating section.

Claims (5)

1. an electric connector, it is characterized in that: comprise the housing be made of plastics that front end is inserted terminal, the installing hole extended along the longitudinal direction is provided with in housing, by insulator mounting structure, insulator is installed in installing hole, on the hole wall of described installing hole and/or on the outer peripheral face of described housing, is provided with metal screen layer.

2. electric connector according to claim 1, is characterized in that: described metal screen layer plating is located on the hole wall of described installing hole and/or the outer peripheral face of described housing.

3. electric connector according to claim 1, is characterized in that: described plastics are composited by least two kinds of unitary plastics.

4. electric connector according to claim 1, it is characterized in that: described housing comprises procapsid part and the back housing portion of front and back split setting, described back housing portion spinning is in the rear end of described procapsid part, described insulator mounting structure comprise be separately positioned on described before, step surface in back housing portion is towards before relative, rear installation step, step surface and the described insulator front end of described front installation step are pushed up and are pressed spacing cooperation to move the limit forward to limit insulator, step surface and the described insulator rear end of described rear installation step are pushed up and are pressed spacing cooperation to move the limit backwards to limit insulator.

5. the electric connector according to claim 1 ~ 4 any one, is characterized in that: the hole wall foremost of described installing hole is provided with the annular stop step that the housing inserted terminal end anastomosis for mating electrical connector loads.