CN201966439U - Electrical connector - Google Patents

Abstract

The utility model discloses an electrical connector, which comprises an insulating body, a plurality of terminals, a locking device and a shielding case; wherein the shielding case defines a butt joint part with a receiving part butt joint connector; the insulating body is provided with a base part and a self-base part The tongue plate extending forward into the docking part is provided with a number of terminal slots for accommodating terminals; the locking device is installed on the insulating body; the locking device includes a support part integrally fixed on the insulating body and a self The two ends of the support part are respectively extended forward locking arms; the base is provided with a corresponding structure supporting the locking device, which well protects the overall locking from loosening due to multiple insertions and extractions, and solves the problem of existing problems. problems in technology.

Description

electrical connector

【Technical field】

The utility model discloses an electric connector, in particular to a fastening and locking structure of the electric connector.

【Background technique】

As a standard input/output interface, the Universal Serial Bus (USB) interface has been widely used in the design of many electronic devices. In the field of electronic products such as personal computers, mobile phones, digital cameras, and music players. Due to the limitation of product shape or cost, most mobile devices adopt micro USB structure. With the development of technology, this kind of products also put forward higher requirements for the stable cooperation of USB structure during use. Chinese Patent Publication No. CN200720035680.6 discloses such an electrical connector, which includes two upper and lower shielding shells interlocked with each other, an insulating body, a locking device installed in the insulating body, and terminals arranged on the insulating body , the locking device is composed of two mutually independent sheet structures, which are inserted and installed on both sides of the insulating body from the rear of the insulating body.

However, it is inevitable to repeatedly plug and unplug the USB connection device during use. The locking device is installed in the groove provided in the insulating body. With the development of miniaturization of electrical connectors, the structural strength of the locking device is also limited. Weakened, so the locking device will become loose due to force after repeated plugging and unplugging, and thus cannot provide a durable and reliable stable connection, affecting the normal use of the electrical connector. Does not meet the requirements for the use of modern products.

In view of the above problems, it is necessary to provide an improved electrical connector.

【Content of utility model】

The purpose of the utility model is to provide an electrical connector that can be stably matched with a butt connector.

In order to solve the above technical problems, the utility model adopts the following technical solutions: an electrical connector, including an insulating body, a plurality of terminals, a locking device and a shielding shell; wherein the shielding shell defines a butt joint with a receiving part for the docking connector The insulating body is provided with a base and a tongue plate extending forward from the base into the docking portion, and the tongue plate is provided with a number of terminal grooves for receiving terminals; the locking device is installed on the insulating body; the locking device includes an integrally arranged and fixed The supporting part on the insulating body and the latch arms respectively extending forward from the two ends of the supporting part.

Compared with the prior art, the electrical connector of the present utility model has at least the following advantages: the lock device is provided with a supporting part in an integrated structure, and the base is provided with a corresponding receiving and supporting structure, which well protects the entire lock It will not be loosened due to repeated plugging and unplugging force, which solves the problems in the prior art.

【Description of drawings】

Fig. 1 is a perspective view of the electrical connector of the present invention.

Fig. 2 is an exploded view of the electrical connector of the present invention.

FIG. 3 is an exploded view from another angle of the electrical connector shown in FIG. 2 .

Fig. 4 is an exploded view of the electrical connector of the present invention.

【Detailed ways】

Please refer to Fig. 1 to Fig. 4, the utility model provides an electrical connector 10, which includes: a shielding case 1, an insulating body 2 accommodated in the shielding case 1, and a terminal 3 assembled on the insulating body 2 , Install the block 4 and the locking device 5 on the insulating body 2 .

The shielding case 1 is formed by fastening an upper case 11 and a lower case 12, and a receiving cavity for accommodating a docking connector (not shown) is formed in the middle, wherein the upper case 11 includes an upper cover plate 111, The butt joint 112 that is bent downward from the front end of the upper cover 111 and extends forward, the baffle 113 that extends backward, and the side plates 114 that are bent vertically downward from both sides of the upper cover 111 , the upper cover 111 is provided with The inner buckle 1111 is bent into the receiving cavity, and the front end of the side plate 114 near the docking portion 112 is provided with a downwardly extending clamping piece 1141 , and the clamping piece 1141 is provided with an opening 1142 . The opening of the docking portion 112 is D-shaped, and the front end of the upper wall 1123 is provided with a protrusion 1121 extending along the docking direction for abutting against the docking connector to fasten the cooperation between the two. Both sides of the protrusion 1121 are provided with through holes 1122, and the docking portion 112 is provided with a bottom wall 1124, and the two sides behind the bottom wall 1124 are provided with an interference piece 1125 bent and extended obliquely downward, and the end of the interference piece 1125 is set as a hook shape.

The lower casing 12 includes a lower cover plate 121, an interference plate 1211 formed by bending the front end of the lower cover plate 121 obliquely upward, a U-shaped wrapping piece 123 formed by extending backward and bending from the end of the lower cover plate 121, and a lower cover The side walls 124 formed by bending vertically upward on both sides of the plate 121, wherein the lower cover plate 121 is also provided with an inner buckle pin 1111 bent to the inside of the electrical connector 10, which can abut against the rear end of the insulating body 2 to prevent the insulating body from 2. During use, it shrinks backward due to force, and secures it in the shielding housing 1. The end of the interference plate 1211 is also set in a hook shape corresponding to the interference piece 1125. After the fastening, the interference plate 1211 interacts with the interference piece 1125 to prevent the butt joint 112 from tilting upward due to excessive force during use. The side wall 124 is provided with an opening 1241 at the front end, and near the opening 1241 is provided with a blocking portion 1242 protruding into the receiving chamber and correspondingly matching with the opening 1142, so as to ensure that the upper housing 11 and the lower housing 12 are fastened together. fit tightly. The upper edge of the side wall 124 near the end is provided with a clamping piece 1243 formed by bending inwards. There is a gap between the clamping piece 1243 and the side wall 121. After the upper and lower shells are fastened together, the side plate 114 can be clamped and limited. This ensures that the overall tightness of the shielding housing 1 is ensured.

The insulating body 2 includes a base portion 21 with an elongated shape and a tongue plate 22 disposed on the front wall of the base portion 21 and extending into the mating portion toward the opening direction of the electrical connector 10 . The base 21 is provided with a through hole 211 that runs through its upper and lower end faces. The two sides of the base 21 are provided with trapezoidal bosses 212 corresponding to the openings 1241. The bosses 212 can be clamped in the openings 1241, so that the The insulating body 2 is reliably fixed in the metal shell 1, and the rear end of the base 21 is provided with an n-type receiving groove 213, which includes a vertically extending fixing groove 2131 formed on the rear end of the base 21 close to the two sides and The connection groove 2132 connecting the two fixing grooves 2131 . The tongue plate 22 is arranged in the docking portion 112, and its front end is provided with a plurality of terminal grooves 221 for receiving the terminals 3. The terminal grooves 221 extend in the front and rear direction and run through the entire base 21 to the rear wall surface. The terminal grooves A channel 222 is provided on both sides of 221 near the edge. The part of the channel 222 located on the tongue plate 22 runs through the entire tongue plate 22 in the vertical direction, and extends backward and runs through the entire base 21 to the receiving groove. 213.

The terminal 3 is provided with a contact part 31, a connecting part 32 and a holding part 33. The connecting part 31 protrudes upwards and is bent into a tapered shape, which is convenient for reliable docking and mating with the docking connector. The connecting part 32 is straight It is elongated and has several thorns 321 on it, and the thorns 321 can be held in the terminal groove 221, so as to ensure that the terminal 3 will not be displaced or fall off due to the force of plugging and unplugging the electrical connector 10 during use. Some of the holding portions 33 of the terminals 3 are bent upwards and extend backwards, and some of the holding portions 33 of the terminals 3 are bent downwards and extended backwards, and the two types of terminals 3 are arranged alternately.

The stopper 4 is in the shape of a rectangular block, and its lower end is provided with a number of fixed feet 41 spaced apart from each other. The stopper 4 cooperates with the through hole 211, and after being embedded in the through hole 211, it is mortgaged on the terminal 3 and straddled by the fixed feet 41. on the terminal 3 so that the terminal 3 is more stable in the terminal groove 221 .

The locking device 5 is provided with an n-shaped supporting part 51, a locking arm 52 located at both ends of the supporting part 51 extending toward the opening direction of the electrical connector 10, and a fixing arm 52 extending from both ends of the supporting part 51 under the locking arm 52. The arm 53 , wherein the supporting portion 51 includes a connecting portion 511 disposed transversely in the connecting groove 2132 and holding arms 512 extending downward from two ends of the connecting portion 511 . The front end of the locking arm 52 is provided with an upwardly protruding triangular clamping portion 521 , the locking arm 52 and the fixed arm 53 are arranged in the channel 222 , and the n-shaped supporting portion 51 is arranged in the n-shaped receiving groove 213 Inside, when the clamping part 521 is pressed down by force, the interference part 53 abuts against the bottom of the part where the channel 222 communicates with the base part 21, and the upper end of the n-type support part 51 presses against the n-type channel, which is very good It protects the locking device 5 as a whole from loosening due to repeated insertion and extraction.

When assembling, the terminal 3 is put into the insulating body 2, the stopper 4 is pressed into the through hole 221 from above and presses the terminal 3, the locking device 5 is inserted into the corresponding position in the insulating body 2 from the rear of the insulating body 2, and the upper housing 11 is fastened with the lower case 12 to form the shielding case 1, the insulating body 2 is inserted into the corresponding position in the shielding case 1 from the rear, and finally the inner buckle feet 1111 are bent and riveted for positioning.

In other embodiments, the n-shaped supporting portion 51 can also be set in other shapes such as U-shaped, H-shaped, etc., which can also achieve the effect of protecting the entire locking device 5 from loosening due to multiple insertions and extractions.

The above is only one embodiment of the utility model, not all or the only implementation. Any equivalent change to the technical solution of the utility model adopted by those of ordinary skill in the art by reading the specification of the utility model shall be considered as the present invention. covered by the claims of the utility model.

Claims (10)

1. An electrical connector, comprising an insulating body, a plurality of terminals, a locking device and a shielding housing; wherein the shielding housing defines a docking portion having a receiving part butt joint connector; the insulating body is provided with a base and extends forward from the base Insert the tongue plate of the docking part, the tongue plate is provided with a number of terminal slots for receiving terminals; the locking device is installed on the insulating body; it is characterized in that: the locking device includes a support part and a Locking arms respectively extending forward from both ends of the supporting part. 2 . The electrical connector as claimed in claim 1 , wherein two ends of the supporting portion are located below the locking arm and are provided with fixing arms abutting against the base. 3 . 3. The electrical connector as claimed in claim 2, wherein the supporting portion is provided with a transverse connecting portion and holding arms extending downward from two ends of the connecting portion. 4 . The electrical connector as claimed in claim 3 , wherein the insulating body is provided with a receiving groove corresponding to the supporting part, which includes a connecting groove for receiving the connecting part and a fixing groove for receiving the holding arm. 5. The electrical connector according to claim 1, wherein a triangular locking portion protruding upward is provided at the front end of the locking arm. 6. The electrical connector according to claim 1, wherein the locking device has an axisymmetric structure. 7. The electrical connector as claimed in claim 1, wherein the locking device and the terminal are located on the same side of the tongue plate. 8. The electrical connector according to claim 1, wherein the electrical connector is provided with a stopper, the base is provided with a through hole corresponding to the stopper, and the stopper presses against the terminals. 9. The electrical connector according to claim 1, wherein the shielding shell is formed by fastening an upper shell and a lower shell. 10 . The electrical connector as claimed in claim 9 , wherein the upper housing comprises an upper cover plate and a butt portion bent downward from a front end of the upper cover plate and extending forward. 11 . the

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