TWI436711B - USB device with prefabricated structure - Google Patents

Description

USB device with pre-connected structure

The invention relates to a USB device with a pre-connected structure, in particular to a USB device capable of quickly combining a USB connector and a circuit board without using a jig.

There are many computer peripherals available today, most of which use the Universal Serial Bus (USB) to connect with the host computer. Because USB itself is very convenient, USB has been widely used. Plugs around the perimeter of various computers.

In terms of structure, the USB device includes at least one circuit board and a USB connector, and the two are electrically connected; for example, for a flash drive, a wireless receiver, a wireless network card, etc. Most of the electrical connection methods are soldered to solder the terminals on the USB connector to the pad contacts at the corresponding positions on the board. Since the board and the USB connector are partially overlapped at one end, the soldering operation is performed. In order to ensure that the circuit board and the USB connector are in a straight line, the fixture must be fixed separately and then soldered. However, this method is not only costly, but also requires time-consuming work and low efficiency. If the two are fixed separately by the jig, when the board and the USB connector are soldered, it is easy to be tilted with the USB connector without being effectively fixed, thus affecting the yield of the product.

Accordingly, it is a primary object of the present invention to provide a USB device having a pre-connected structure that allows the USB connector and the circuit board to be pre-formed with the circuit board prior to soldering without the need for a fixture. Welding can be carried out under initial positioning to increase product yield and reduce production costs.

The technical means for achieving the above purpose is that the USB device comprises: a metal member, which is a hollow rectangular frame formed by an upper sheet, a lower sheet and two side sheets, and an accommodating space is formed inside the metal. The component has a first end and a second end, and the two side pieces respectively extend outward from the second end to a receiving portion having a relatively L shape; a terminal block is disposed in the accommodating space of the metal component. The terminal block is provided with a plurality of terminals, one end of each terminal is located on one surface of the terminal block, the other end of which extends through the terminal block to the second end of the metal component; and a circuit board having one end surface formed thereon a plurality of pad contacts having a width at one end of the pad contact matching a distance between the two receiving portions of the metal member, the thickness of one end of the pad contact being matched to the distance between the bottom of the receiving portion and the terminal on the terminal block .

By the above means, when the metal component and the terminal block are combined into a USB device, the welding operation can be performed without using the jig of the circuit board, mainly because the width of one end of the contact pad of the circuit board is matched with the relative of the metal component. The distance between the support part and the distance between the bottom of the support part and the terminal on the terminal block is also matched to the thickness of one end of the contact pad of the circuit board, so that the circuit board can be inserted into the USB device with one end of the pad contact. The initial position is formed in the support part. At this time, the terminal on the terminal block also contacts the pad contact on the circuit board for direct welding operation, thereby reducing the positioning work required for the conventional welding, and further avoiding the terminal block. The relative inclination of the terminals that may occur during soldering.

Referring to the first and second figures, the present invention is a USB device having a pre-connected structure, which is composed of a metal member (10), a terminal block (20) and a board circuit (30).

The metal component (10) is a hollow and substantially rectangular frame composed of an upper piece (11), a lower piece (12) and two side pieces (13), and the inside of the metal part (10) forms a a accommodating space (not shown), and the metal member (10) has a first end (11A) and a second end (11B), and the two sides (13) are respectively directed by the second end (11B) Extendingly extending a receiving portion (14), the receiving portion (14) includes a horizontal arm (141) and a vertical arm (142), the horizontal arm (141) and the vertical arm (142) are connected at one end An L shape.

The terminal block (20) is disposed in the accommodating space of the metal component (10), the terminal block (20) is provided with a plurality of terminals (21), and one end of each terminal (21) is located at the metal component (10) Inside, the other end extends through the terminal block (20) to the second end (11B) of the metal member (10) for electrical connection with the circuit board (30).

The circuit board (30) is formed with a plurality of pad contacts (31) at one end of the surface, and the pad contacts (31) respectively correspond to the terminals (21) on the terminal block (20), and the circuit board ( 30) The width of one end of the pad contact (31) is matched to the vertical arm (142) spacing of the two receiving portions (14) on the metal component (10), and the thickness of the end is also matched to the receiving portion (14) The height distance between the horizontal arm (141) and each terminal (21).

Referring to the third and fourth figures, the contact portion (14) of the above metal member (10) is used, and the terminal (21) of the terminal block (20) and the pad of the circuit board (30) are connected (31). The soldering can be performed without using the jig during assembly; before soldering, the width of one end of the soldering pad contact (31) of the circuit board (30) is matched with the two supporting parts (14) of the metal part (10). The pitch of the end, and the thickness of the end also matches the height distance between the horizontal arm (141) of the receiving portion (14) and each terminal (21), so the horizontal arm (141) and the terminal of the receiving portion (14) 21) A slot-like structure can be formed between the two, so that one end of the circuit board (30) having the pad contact (31) can be directly inserted into the horizontal arm (141) of the receiving portion (14) of the metal member (10). Between the terminals (21) on the terminal block (20), and the terminal (21) of the terminal block (20) is in contact with the pad contact (31) of the end surface of the circuit board (30), and can be directly soldered. The work thereby reduces the time required for soldering and avoids the relative tilt that may occur with the terminals (21) during soldering.

The present invention has been described in detail in the foregoing embodiments, but is not limited to the scope of the invention as described in the foregoing embodiments, and any modifications and modifications may be made without departing from the spirit and scope of the invention. Variations are also within the scope of the invention.

(10). . . Metal parts

(11A). . . First end

(11B). . . Second end

(11). . . Top film

(12). . . Next film

(13). . . Side piece

(14). . . Support department

(141). . . Horizontal arm

(142). . . Vertical arm

(20). . . Terminal Block

(twenty one). . . Terminal

(30). . . Circuit board

(31). . . Solder pad contact

First Figure: A perspective view of a preferred embodiment of the present invention.

Second Figure: An assembled view of a preferred embodiment of the present invention.

Third Figure: is a cross-sectional view of a USB connector in accordance with a preferred embodiment of the present invention.

Fourth Figure: is a cross-sectional view of a preferred embodiment of the present invention.

(10). . . Metal parts

(11). . . Top film

(11A). . . First end

(11B). . . Second end

(12). . . Next film

(13). . . Side piece

(14). . . Support department

(142). . . Horizontal arm

(20). . . Terminal Block

(twenty one). . . Terminal

(30). . . Circuit board

Claims (4)

A USB device having a pre-connected structure, comprising: a metal component, which is composed of an upper piece, a lower piece and two side pieces, and has an accommodating space therein, and has a first end and a second end, The two side plates respectively extend outwardly from the second end to a receiving portion having a relatively L shape; a terminal block is disposed in the accommodating space, and the terminal block is provided with a plurality of terminals, each of the terminals One end is located in the terminal block, the other end extends through the terminal block to the second end of the frame; and a circuit board has a plurality of pad contacts formed on one end surface thereof, and the width of one end of the pad contact Matching the distance between the two receiving portions of the frame; the thickness of one end of the pad contact is matched with the distance between the bottom of the receiving portion and the terminal on the terminal block, so that one end of the circuit board having the pad contact is inserted into the terminal block Between each terminal and the receiving part. A USB device having a pre-connected structure according to claim 1, wherein the receiving portion includes a horizontal arm and a vertical arm, and the horizontal arm is connected to the vertical arm at one end. A USB device having a pre-connected structure as described in claim 2, wherein the width of one end of the pad with the pad contact is matched to the vertical arm spacing of the two receiving portions. The USB device having the pre-connected structure according to claim 2 or 3, wherein the thickness of one end of the circuit board having the pad contact is matched with the height distance between the horizontal arm of the receiving portion and each terminal.