CN201365006Y - USB connector - Google Patents

Abstract

The utility model provides a USB connector, include: the circuit board comprises an insulating body, a plurality of first terminals, a plurality of second terminals and a metal shell. The insulation body is provided with a front end part, a rear end part extending backwards from the front end part and a plurality of accommodating grooves arranged at intervals, the first terminal is fixedly arranged on the insulation body, and the second terminal is respectively provided with a positioning thorn and corresponds to the accommodating grooves. Therefore, each second terminal is pressed into the corresponding containing groove from the upper part of the insulating body, the positioning pin interferes with the connecting part of the rear end part, and then the metal shell is fixed on the insulating body, so that the second terminals have the same rebound height, the second terminals are prevented from being separated from the insulating body, and the use reliability is improved. Moreover, the bending times of the first terminals are reduced, and the production yield is improved.

Description

usb connector

technical field

The utility model relates to a USB connector, in particular to a USB connector for electrically connecting a computer mainframe and its interface equipment.

Background technique

USB is a new interface technology used in the computer field. With the popularization of a large number of personal computers that support USB, USB has gradually become the standard interface of computers. In addition to almost all computer hosts supporting USB, electronic devices using USB interfaces are also increasing day by day, such as digital cameras, scanners, imaging devices, printers, keyboards and mice, and so on.

Please refer to FIG. 1A and FIG. 1B, the known USB connector includes an insulating body 1a, a plurality of first terminals 2a, a plurality of second terminals 3a and a metal shell 4a, the first terminal 2a and the second terminal 3a It is fixed on the insulating body 1a, and the insulating body 1a is set inside the metal shell 4a. A mounting leg 41a extends from both sides of the metal shell 4a, and the mounting leg 41a is welded to the circuit board 5a by soldering agent.

The insulating body 1a has a front end 11a and a rear end 12a extending backward from the front end 11a. The front end of each second terminal 3a has a contact portion 31a, and the contact portion 31a extends backward from a barb portion 32a and a welding end portion 33a. When assembling, the first terminal 2a is first formed on the bottom of the insulating body 1a (see Figure 1A), and then the second terminal 3a is pressed in from the rear end 12a of the insulating body 1a, so that the contact portion 31a is against the insulating body 1a The front end portion 11a and the barb portion 32a are fastened to the rear end portion 12a of the insulating body 1a, and the second terminal 3a is elastically supported on the insulating body 1a. Then, the first terminal 2a and the second terminal 3a are respectively bent (see FIG. 1B ), and the metal shell 4a is fixed on the insulating body 1a to complete the known USB connector.

The above known USB connectors have the following disadvantages:

1. The contact portion 31a of each second terminal 3a abuts against the front end portion 11a of the insulating body 1a, and the barb portion 32a buckles the rear end portion 12a of the insulating body 1a, so that each second terminal 3a is elastically fixed to the insulating body 1a and Generate rebound force. Due to the way of applying force during assembly and the mechanical properties of the material itself, the phenomenon that the second terminal 3a is prone to sink and cannot rebound will increase the defective rate of production.

2. Each second terminal 3a is only fastened to the insulating body 1a through the barb portion 32a, so it is easy to separate from the insulating body 1a due to external force, and contact with the metal shell 4a to cause a short circuit phenomenon, which reduces the reliability in use.

3. Each first terminal 2a needs to be bent three times, and each second terminal 3a needs to be bent once, which makes the design of the bending jig difficult and the number of times of bending is high, which wastes manpower and increases the rate of defective production.

Utility model content

The technical problem to be solved by the utility model is to provide a USB connector, the second terminal is pressed into the corresponding receiving groove by the top surface of the insulating body, which can reduce the bending times of the first terminal and improve the production yield. In addition, the second terminal is provided with positioning thorns for interfering with the connection of the insulating body, so that the second terminal has the same rebound height and avoids detachment from the insulating body, increasing the reliability in use.

In order to solve the problems of the technologies described above, the embodiments of the utility model provide technical solutions as follows:

A USB connector, comprising: an insulating body, the insulating body is provided with a plurality of accommodating grooves, the insulating body has a front end and a rear end extending backward from the front end; a plurality of first terminals, The first terminal is fixed on the front end and the rear end; a plurality of second terminals, the second terminals correspond to the accommodating groove, the second terminals are placed in the accommodating groove, the second terminals Each includes a barb part, the barb part has a positioning thorn; a metal shell; wherein, the second terminal is pressed into the corresponding accommodating groove from above the insulating body, and the positioning thorn is connected to the front end of the rear end Interference occurs at the surface connection, and the metal shell is fixed on the insulating body.

The utility model has the following beneficial effects:

1. The pressing depth of the interference between the positioning thorn and the rear end achieves a more accurate positioning effect, so that each second terminal has the same springback height, which increases the stability of the process and improves the production yield.

2. When the USB connector is engaged with the USB docking connector, the USB docking connector pushes against the second terminal, so that the positioning thorns touch the front surface of the rear end of the top, so as to avoid the loosening of the positioning thorns, which will affect the external force of each second terminal The rebound height after action can increase the reliability and service life of the USB connector.

3. The first terminal is formed on the front end and the rear end of the insulating body, and the first terminal and the second terminal only need to be bent once, which reduces the number of times of using the bending jig, saves manpower and improves production yield.

4. The positioning thorn touching the front end of the rear end can prevent the second terminal from being separated from the insulating body due to external force, thereby avoiding the short circuit phenomenon caused by the contact between the second terminal and the metal shell, and increasing the reliability of the USB connector in use.

Description of drawings

1A is a schematic cross-sectional view of an insulating body and a first terminal of a known USB connector.

FIG. 1B is a schematic cross-sectional view of a known USB connector.

2A is a schematic cross-sectional view of the insulating body and the first terminal of the USB connector of the present invention.

2B is a schematic cross-sectional view of the USB connector of the present invention.

Fig. 3 is a three-dimensional exploded view of the USB connector of the present invention.

Fig. 4 is a three-dimensional assembly diagram of the USB connector of the present invention.

Fig. 5 is a combination diagram of the USB connector and the USB docking connector of the present invention.

Explanation of main component symbols

Insulation body 1a

front end 11a rear end 12a

first terminal 2a

second terminal 3a

Contact part 31a Barb part 32a

Solder end 33a

metal shell 4a

Install foot 41a

PCB 5a

USB connector 100

USB docking connector 200

Insulation body 1

front end 11 rear end 12

Storage tank 13

first terminal 2

second terminal 3

contact part 31 free end part 32

Fixing part 33 Welding end part 34

Barb 35 Positioning thorn 351

Fixed thorn 352 Safety thorn 353

metal case 4

Upper wall 41 Side wall 42

Mounting feet 43 Internal space 44

Tongue 45 Base 451

Free end 452 Bend part 453

circuit board 5

Vertical direction X

Horizontal direction Y

Vertical direction Z

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

Please refer to Figure 2A, Figure 2B and Figure 3, the utility model USB connector 100 includes: an insulating body 1, a plurality of first terminals 2, a plurality of second terminals 3 and a metal shell 4, the USB connector 100 is set On a circuit board 5 (please refer to FIG. 2B).

The insulating body 1 has a front end 11 and a rear end 12 extending backward from the front end 11 along the longitudinal direction X. The first terminal 2 is fixed on the front end 11 and the rear end 12. The upper surface of the insulating body 1 faces A plurality of accommodating grooves 13 are recessed, corresponding to the second terminals 3 , and the accommodating grooves 13 are arranged at intervals along the transverse direction Y (refer to FIG. 3 ).

The second terminal 3 respectively has a contact portion 31 , a free end portion 32 , a fixing portion 33 , a welding end portion 34 and a barb portion 35 . The contact portion 31 is hook-shaped, and extends backward along the longitudinal direction X to form a free end portion 32, the free end portion 32 extends backward to form a fixed portion 33, and the fixed portion 33 extends downward along the vertical direction Z to form a welding end portion 34, The barbed portion 35 protrudes from the fixing portion 33 .

The metal shell 4 is formed by stamping a metal guide piece. The metal shell 4 has an upper wall 41 and side walls 42 extending downward from the edge portions on both sides of the upper wall 41 along the vertical direction Z (see FIG. 3 ). , the side walls 42 are respectively provided with two mounting feet 43, and the mounting feet 43 can be welded to the circuit board 5 inside the electronic device (not marked) by soldering agent (please refer to Fig. 2B ), the electronic device (not marked) ) such as mainframe computers, printers and computer interface equipment. The inner space 44 surrounded by the upper wall 41 and the side wall 42 can place the insulating body 1 . The upper wall 41 is flat and cantilevered tongues 45 are provided on both side edges respectively. The two tongues 45 respectively have a base 451 and a free end 452 extending forward from the base 451 along the longitudinal direction X, and are located at A front end side of the free end 452 has a bent portion 453 protruding toward the inner space 44 of the metal housing 4 . Therefore, the cantilever tongue 45 can be elastically bent with the base 451 as a fulcrum.

When assembling, first form the first terminal 2 on the front end 11 and the rear end 12 of the insulating body 1 (see FIG. 2A ), and then bend the rear end of each first terminal 2 once (see FIG. 2B ), Further bend the rear end of the second terminal 3 once, and press it into the corresponding accommodating groove 13 from above the insulating body 1 (see FIG. 2B ). The barbed part 35 interferes with the junction of the insulating body 1, so that the fixing part 33 is fixed on the rear end part 12 of the insulating body 1, and the free end part 32 takes one end of the fixing part 33 as a fulcrum, and can be elastically bent along the vertical direction. Z is bent upward, so that at least a part of the contact portion 31 protrudes from the receiving groove 13 . Moreover, the metal shell 4 is fixed to the insulating body 1 such that the insulating body 1 and the second terminal 3 are placed in the inner space 44 (refer to FIG. 4 ).

The barb portion 35 of the present invention can be designed in different ways. Please refer to FIG. 2B . The barb portion 35 of the embodiment of the present invention includes a positioning thorn 351 , a fixing thorn 352 and a safety thorn 353 respectively. When the second terminal 3 is placed in the corresponding accommodating groove 13, the positioning thorn 351 interferes with the front end surface of the rear end 12 of the insulating body 11, and the fixing thorn 352 interferes with the upper surface of the rear end 12 of the insulating body 1. Interference occurs at the connection, and interference occurs between the safety thorn 353 and the rear end surface of the rear end 12 of the insulating body 1 , so that the second terminal 3 is fixed on the insulating body 1 .

To sum up, because the first terminal 2 is formed on the front end 11 and the rear end 12 of the insulating body 1, each first terminal 2 only needs to be bent once, which reduces the number of times of using the bending jig, saves manpower and Improve production yield. Further, through the pressing depth at which the positioning thorns 351 and the safety thorns 353 of the second terminal 3 interfere with the rear end 12, a more accurate positioning effect is achieved, so that the free end 32 of the second terminal 3 has the same The rebound height increases the stability of the manufacturing process, thereby improving the production yield.

In addition, when the USB connector 100 is engaged with a USB docking connector 200 (please refer to FIG. 5 ), the USB docking connector 200 is inserted into the metal shell 4 and abuts against the contact portion 31, so that the positioning thorns 351 are abutted against. The front surface of the end portion 12 prevents the positioning thorns 351 from loosening, thereby affecting the rebound height of the free end portion 32 after being subjected to external force, which can increase the reliability and service life of the USB connector 100 .

In addition, the positioning thorns 351 against the front end of the rear end 12 can also prevent the welding end 34 from being separated from the insulating body 1 due to external force, thereby avoiding the short circuit phenomenon caused by the contact between the second terminals 3 and the metal shell 4, and increasing the USB connector. 100% reliability in use.

The foregoing is a preferred embodiment of the present utility model, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the present utility model. Retouching should also be regarded as the scope of protection of the present utility model.

Claims (5)

1. A USB connector, characterized in that it comprises: An insulating body, the insulating body is provided with a plurality of accommodating grooves, the insulating body has a front end and a rear end extending backward from the front end; a plurality of first terminals, the first terminals are fixed on the front end and the rear end; a plurality of second terminals, the second terminals correspond to the accommodating groove, the second terminals are placed in the accommodating groove, the second terminals respectively include a barb portion, and the barb portion has a positioning thorn; a metal shell; Wherein, the second terminal is pressed into the corresponding accommodating groove from above the insulating body, the positioning thorn interferes with the joint of the front end surface of the rear end, and the metal shell is fixed on the insulating body. 2. The USB connector according to claim 1, wherein the barb part further includes a fixing thorn and a safety thorn respectively, the fixing thorn interferes with the joint of the upper surface of the rear end, and the safety thorn Interference occurs at the junction with the rear end face of the rear end. 3. The USB connector according to claim 1, wherein each of the second terminals further includes a contact portion, a free end portion, a fixed portion, and a soldering end portion, and the contact portion extends backward to form The free end portion, the free end portion extends backward to form the fixing portion, the fixing portion extends downward to form the welding end portion, the fixing portion is fixed to the rear end portion, at least a part of the contact portion protrudes from the accommodating groove. 4. The USB connector according to claim 1, wherein a USB docking connector is inserted into the metal shell, the USB docking connector abuts against the second terminal, and the positioning portion abuts against the rear end portion front face. 5. The USB connector according to claim 1, wherein the accommodating grooves are spaced apart from the insulating body.

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