TWI446640B - Electrical connector - Google Patents

Description

Electrical connector

The invention discloses an electrical connector, in particular to a soldering and fixing structure of an electrical connector.

The Universal Serial Bus (USB) interface is a standard input/output interface that 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, music players. Micro USB structures are used in most mobile devices due to limitations in product shape or cost. An electric connector of the present invention includes a shielding case, an insulative housing and a terminal disposed on the insulative housing. The shielding housing is provided with four fixing pieces welded to the circuit board, and is shielded after soldering. A certain height gap is left between the bottom of the housing and the circuit board.

However, it is inevitable to repeatedly plug and unplug the USB connection device during use. In order to reliably connect with the docking connector, the mating force between the two connectors is large, and the required plugging force is also large, and the housing is shielded. There is a gap at the bottom, and only four thin fixing pieces are connected to the circuit board. It is easy to loosen the fixing piece due to excessive external force, which causes the external force to directly act on the holding arm of the terminal and the circuit board, which is easy to cause the terminal and the circuit board to be off. Welding causes poor contact and does not meet the requirements of modern products.

In view of this, it is necessary to provide an improved electrical connector that overcomes the deficiencies of the electrical connectors described above.

It is an object of the present invention to provide an electrical connector that can be securely soldered to a circuit board.

In order to achieve the above object, the present invention adopts the following technical solutions: an electrical connector includes an insulative housing, a plurality of terminals, and a shielding housing; wherein the shielding housing includes an upper wall and two side walls and connections respectively bent from two sides of the upper wall a bottom wall opposite to the upper wall, the upper wall, the two side walls and the bottom wall define a receiving cavity for receiving the mating connector, and the plurality of holding arms and the plurality of fixing pieces are disposed on both sides of the shielding shell; the insulating body is provided The base wall and the tongue plate extending into the receiving cavity, the tongue plate is provided with a plurality of terminal slots for receiving the terminals; the bottom wall is provided with a retaining portion formed by the downward recess.

Compared with the prior art, the electrical connector of the present invention has at least the following advantages: the holding portion, the holding arm and the fixing piece can be welded on the circuit board at the same time, and the welding area of the holding portion is large, thereby ensuring stable and reliable welding of the electrical connector. On the circuit board, avoid de-soldering due to multiple plugging and unplugging, resulting in poor contact of the electrical connector and affecting product use.

10‧‧‧Electrical connector

1‧‧‧shading shell

2‧‧‧Insulated body

3‧‧‧ terminals

11‧‧‧Upper wall

12‧‧‧ side wall

13‧‧‧ bottom wall

111‧‧‧ gap

121‧‧‧Fixed tablets

1211‧‧‧Apartment

1212‧‧‧Keeping Department

123‧‧‧ sloping wall

131‧‧‧ Holding Department

132‧‧‧Opening

133‧‧‧ holding arm

21‧‧‧ base wall

211‧‧‧Boss

212‧‧‧Bumps

22‧‧‧ tongue plate

221‧‧‧through hole

31‧‧‧Weld Department

32‧‧‧Contact feet

33‧‧‧Connecting Department

222‧‧‧Terminal slot

The first drawing is a perspective view of the electrical connector of the present invention; the second drawing is an exploded view of the electrical connector of the present invention; the third drawing is another angular exploded view of the electrical connector shown in the second figure; A cross-sectional view of line IV-IV shown in the figure.

Referring to the first to fourth figures, a specific embodiment of the electrical connector 10 of the present invention will be described in detail below with reference to the accompanying drawings.

The electrical connector 10 of the present invention includes a shielding case 1, an insulative housing 2, and a terminal 3 disposed on the insulative housing 2.

The shielding shell 1 includes an upper wall 11 , two side walls 12 respectively bent downward from opposite ends of the upper wall 11 , and a bottom wall 13 connecting the two side walls 12 and disposed in parallel with the upper wall 11 , the upper wall 11 , The two side walls 12 and the bottom wall 13 are connected to receive a receiving cavity for receiving a mating connector (not shown), wherein the two side walls 12 are connected to the bottom wall 13 by symmetrically disposed inclined walls 123, so that the electrical connector 10 The opening is D-shaped. The bottom portion of the bottom wall 13 is provided with a downwardly recessed retaining portion 131. The retaining portion 131 has a rectangular shape as a whole. The front end of the bottom wall 13 has a rectangular opening 132 perpendicular to the insertion and removal direction of the connector, and the opening 132 holds the retaining portion 131. Separation from the edge portion 134 at the opening, that is, the edge portion 134 is kept straight, ensures that the shape of the opening of the electrical connector 10 is not affected by the downward deformation of the holding portion 131. The retaining portion 131 extends rearward to the rear end of the bottom wall 13. The bottom end of the bottom wall 13 is provided with a holding arm 133 which is bent downward and extends rearward. The bottom surface of the holding arm 133 is disposed coplanar with the bottom surface of the holding portion 131, and the side wall 12 is provided with a fixing piece extending vertically downward. 121, and the end is stamped into an inverted R-shape, and the inverted R-shaped structure is a latching portion 1212 that is inserted into a receiving hole (not shown) of the circuit board for holding the electrical connector 10 on the circuit board. The inverted R-shaped structure is further provided with an abutting portion 1211 having a planar structure, which can abut on the circuit board to prevent the electrical connector 10 from sinking as a whole. The abutting portion 1211, the bottom surface of the holding portion 131 and the bottom surface of the holding arm 133 are disposed coplanarly and welded to the circuit board, and the setting of the holding portion 131 increases the welding area of the electrical connector 10 and the circuit board, thereby ensuring The electrical connector 10 can be soldered to the circuit in a stable and reliable manner. The side wall 12 is provided with a baffle 122 extending rearward and vertically bent into the receiving cavity, and the end of the upper wall is provided with a notch 111.

The insulative housing 2 includes a vertical elongated shape base wall 21 and a tongue plate 22 disposed on the front wall surface of the base wall 21 extending toward the opening of the electrical connector 10 into the receiving cavity. The upper end of the base wall 21 is provided with a boss 211 abutting against the notch 111, and the rear wall surface is provided with a protrusion 212 corresponding to the baffle 122, so that after the insulating body 2 is inserted into the shielding case 1, the housing 1 is shielded. It can be held securely and reliably. a plurality of passes are arranged above the front end of the tongue plate 22 The hole 221 is disposed between the adjacent two terminals 3, and a structure corresponding to the through hole 221 is disposed in the mold to facilitate the insertion of the terminal 3 during insert molding. A plurality of terminal slots 222 are defined below the front end of the tongue plate 22.

The terminal 3 is provided with a soldering portion 31 soldered to the circuit board, a contact leg 32 that is in contact with the mating connector, and a bent connecting portion 33 that connects the soldering portion 31 and the contact leg 32, wherein the front end of the contact leg 32 is inclined upward. The raised protrusion 321 is wrapped in the insulative housing 2 by insert molding, and the contact leg 32 is prevented from coming off the bottom of the terminal slot 222 by an external force.

At the time of assembly, the terminal 3 is placed together with the insulative housing 2 by insert molding, and the shield case 1 is obtained by press molding, and the insulative housing 2 is inserted into the shield case 1 from the rear of the electrical connector 10. The boss 211 is engaged with the notch 111, and the baffle 122 is covered on the bump 212 by caulking, and is pressed against it.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the foregoing is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention should be It is covered by the following patent application.

10‧‧‧Electrical connector

222‧‧‧Terminal slot

132‧‧‧Opening

131‧‧‧ Holding Department

31‧‧‧Weld Department

Claims (8)

An electrical connector includes an insulative housing, a plurality of terminals, and a shielding housing; wherein the shielding housing comprises an upper wall, two side walls respectively bent from two sides of the upper wall, and a bottom wall connecting the two side walls and opposite to the upper wall, The upper wall, the two side walls and the bottom wall define a receiving cavity for receiving the mating connector and define an opening for docking with the mating connector. The shielding shell is provided with a plurality of holding arms and a plurality of fixing pieces on both sides; the insulating body is provided a base wall and a tongue plate extending into the receiving cavity, the tongue plate is provided with a plurality of terminal slots for receiving the terminals; the bottom wall is provided with a retaining portion formed by being recessed downward for soldering and fixing to the circuit board, the electrical connector opening and the An edge portion is provided adjacent to the holding portion, and the edge portion is kept straight. The electrical connector of claim 1, wherein the retaining portion has a flat shape, is formed in a middle portion of the bottom wall, and extends parallel to the upper wall. The electrical connector of claim 2, wherein the bottom wall is formed with an opening at a front end of the holding portion. The electrical connector of claim 1, wherein the rear end of the bottom wall is provided with a holding arm formed obliquely downward, and the holding arm portion is disposed in parallel with the circuit board. The electrical connector of claim 1, wherein the retaining portion is coplanar with the retaining arm. The electrical connector of claim 1, wherein the fixing piece is formed by extending a side wall vertically downward, and the end portion includes a holding portion and an abutting portion abutting the circuit board on a side of the holding portion. The electrical connector of claim 6, wherein the latching portion is fixed in a corresponding receiving hole of the circuit board, and the abutting portion has a planar structure and is coplanar with the bottom surface of the holding portion. The electrical connector of claim 6, wherein the front end of the tongue plate is provided with a plurality of through holes The through hole is disposed between two adjacent terminals.