CN105428953A - Plug-in welding process of Micro-USB plug and data cable - Google Patents

Abstract

The invention relates to the technical field of audio plug connectors, in particular to a plug-in mounting welding process of a Micro-USB plug and a data line, which comprises the following specific steps: preparing a shell, a base, a clamping hook and a plurality of electric terminals, wherein the tail ends of the electric terminals are provided with widened welding discs; embedding and injection molding to obtain a terminal base; inserting the hooks and the electric terminals on the terminal base into the grooves of the base; and are sleeved into the shell together to be clamped and buckled in the shell. The welding position of the electric connection terminal is transferred to the widened welding disc with larger welding space and convenient welding from the narrow welding tail part, so that the welding difficulty between the Micro-USB plug and the data wire is greatly reduced, and the tensile capacity is stronger by inserting the end part of the wire into the insertion hole and then welding; the automatic processing can be carried out by adopting the existing automatic equipment, the welding efficiency of the data line is improved by times, the welding quality is obviously improved, and the production cost of the data line is greatly reduced.

Description

Plug-in welding process of Micro-USB plug and data cable

technical field

The invention relates to the technical field of audio plug connectors, in particular to a Micro-USB plug and a data line insertion welding process.

Background technique

As we all know, USB is an external bus standard used to regulate the connection and communication between computers and external devices. The USB interface supports the plug-and-play and hot-swap functions of the device. The USB interface can be used to connect up to 127 kinds of peripherals, such as mouse, modem and keyboard.

The design of existing portable digital products is becoming increasingly miniaturized. The current general-purpose MiniUSB interface can no longer meet the needs of the miniaturization of digital products, and it is gradually replaced by the MicroUSB connector with a smaller interface. The MicroUSB5pinB plug is an international interface standard plug. Its design assembly accuracy and performance requirements are very high. Because of its very small size, it is not easy to fix and weld its electrical terminals in the MicroUSB connector plug. For example, the Chinese patent CN200920029829.9 discloses a MicroUSB connector, including a housing, a base, a connecting terminal and a rear plug, the housing is fixed to the plug board at the front of the base, and a terminal group is inserted in the base , the tail end of each terminal is inserted into the slot on the back plug and exposed, and a hook is installed on both sides of the base, and the tail of the hook is inserted into the back plug; there are two protrusions on the holding part of each terminal The card point, the tail of the terminal is provided with a welding surface perpendicular to the side of the terminal. The MicroUSB connector needs to be provided with a lot of corresponding snapping structures on the connection terminal, the base and the back plug to ensure the reliability and stability of the connector structure, the structure is complicated, and the assembly is inconvenient; the more serious problem is that this type of MicroUSB The tails of the connector terminals are distributed in two rows, and the solder cups of the connector are distributed on the front and back sides. When welding the wires at the tails of the connector terminals, the wire needs to be attached to the surface of the solder cups of the connector, and then heated to melt the tin foil. The tin climbs up to the surface of the wire to complete the soldering. However, on the one hand, this type of MicroUSB connector cannot solder both sides at the same time, and needs to be soldered twice. When soldering the wires, the cables on both sides need to be fixed with the help of a fixture. Welding wires consumes a lot of man-hours; on the other hand, when soldering the upper cable, the tin foil of the lower row of solder cups will melt and flow away, and vice versa, resulting in poor soldering of the cable.

In addition, because there are many connecting terminals and the arrangement is relatively close, it is necessary for the manufacturer to solder multiple cables to different terminals in a small space, which increases the difficulty of manufacturing and seriously affects the assembly efficiency of the USB plug and data cable. To realize automatic welding processing, the labor cost is relatively high.

Contents of the invention

The technical problem to be solved by the present invention is to provide an insertion welding process for Micro-USB plugs and data cables that can more easily realize automatic welding assembly processing of audio pins.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

The insertion welding process of the Micro-USB plug and the data line is characterized in that it comprises the following steps:

Step A, preparing the shell, the base, the hook and a plurality of electrical terminals, the tail end of the electrical terminals is set as a widened welding plate, and the widened welding plate is provided with a socket hole, and the electrical terminal and the widened The welding plate is integrally formed;

Step B, fixing a plurality of electrical terminals to an injection molding machine and injecting molding to obtain a terminal seat by means of inlay injection molding;

Step C, inserting the hook and the electrical terminal on the terminal base into the groove of the base;

Step D: Put the connecting body of the terminal base and the base obtained in step C into the housing, and snap and snap them together to obtain a Micro-USB plug.

Preferably, step E is further included, stripping the conductive wire with at least four inner core wires to expose the conductive end, and inserting the conductive end into the insertion hole.

Preferably, step F is also included, welding and fixing the connection between the wire end and the insertion hole.

Preferably, in step E, an automatic insertion device is used for automatic insertion.

Preferably, in step F, automatic welding equipment is used for automatic welding reinforcement.

Preferably, the widened welding pad is formed by bending the tail of the electrical terminal.

Preferably, the plurality of widened welding pads are arranged in a straight array.

The beneficial effects of the present invention are:

The invention provides a Micro-USB plug and data line plug-in welding process, the invention through the improvement of the Micro-USB plug, the welding position of the electrical terminal is transferred from the narrow welding tail to a larger welding space and welding On the convenient widened welding plate, in the process of welding the Micro-USB plug and the data cable, it is only necessary to insert and weld the end of the wire in the data cable and the socket hole on the widened welding plate, which greatly reduces the It eliminates the difficulty of welding between the Micro-USB plug and the data cable. Insert the end of the wire into the socket hole before welding. The connection between the two is more stable and the tensile capacity is stronger; Welding the socket hole, the existing automatic welding equipment or automatic insertion equipment can be used for automatic processing, the welding efficiency of the data line has been doubled, the welding quality has been significantly improved, and the production cost of the data line has been greatly reduced. Strong sex.

Description of drawings

FIG. 1 is a schematic diagram of the three-dimensional structure of the Micro-USB plug and the conductive wire of the present invention.

FIG. 2 is an exploded schematic diagram of the three-dimensional structure of the Micro-USB plug of the present invention.

FIG. 3 is a three-dimensional structural diagram of one of the electrical terminals of the Micro-USB plug of the present invention.

FIG. 4 is a schematic top view of a plurality of electrical terminals in the Micro-USB plug of the present invention.

detailed description

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

An embodiment of a plug-in welding process for a Micro-USB plug and a data line, specifically comprising the following steps:

Step A, preparing the shell 1, the base 2, the hook 4 and a plurality of electrical terminals 3, the tail ends of the electrical terminals 3 are set as widened welding pads 6, and the widened welding pads 6 are provided with insertion holes 7. The electrical terminal 3 and the widened welding pad 6 are integrally formed;

Step B, fixing a plurality of electrical terminals 3 to an injection molding machine and injecting molding to obtain a terminal base 5 by means of inlay injection molding;

Step C, insert the hook 4 and the electrical terminal 3 on the terminal base 5 into the groove of the base 2;

Step D, putting the connecting body of the terminal base 5 and the base 2 obtained in step C into the housing 1, and snapping them together to obtain a Micro-USB plug;

Including step E, stripping the conductive wire 9 with at least four inner core wires 8 to expose the conductive end, and inserting the conductive end into the insertion hole 7;

Step F, welding and fixing the connection between the wire end and the socket hole 7 .

As shown in Figures 1 to 4, the present invention, by improving the Micro-USB plug, transfers the welding position of the electrical terminal 3 from the narrow welding tail to the widened welding pad 6, which has a large welding space and is convenient for welding. In the welding process of the Micro-USB plug and the data line, it is only necessary to insert and weld the end of the wire in the data line and the socket hole 7 on the widened welding plate 6, which greatly reduces the number of connections between the Micro-USB plug and the data line. Welding difficulty between the data lines, after inserting the end of the wire into the socket hole 7 and then welding, the connection between the two is more stable and the tensile capacity is stronger; because the end of the wire is connected to the socket hole 7 on the PCB For welding, the existing automatic welding equipment or automatic insertion equipment can be used for automatic processing, the welding efficiency of the data line is doubled, the welding quality is significantly improved, the production cost of the data line is greatly reduced, and the practicability is strong.

A preferred embodiment is that in step E, automatic insertion equipment is used for automatic insertion; in step F, automatic welding equipment is used for automatic welding and reinforcement, so that the production and processing efficiency is higher.

In this embodiment, the widened welding pad 6 is formed by bending the tail of the electrical terminal 3, which not only realizes the integral molding of the widened welding pad 6 and the electrical terminal 3, but also reduces the widening The manufacturing difficulty of the welding pad 6 and the electrical terminal 3 is that the metal sheet is punched into a P-shape first, and then the P-shaped piece is bent into shape, which is simple and convenient.

In this embodiment, the plurality of widened welding pads 6 are arranged in a straight line array. During the automatic batch welding process of data lines and Micro-USB plugs, all welding specifications are unified, which is convenient for automatic plug-in equipment and welding. The automatic processing of the equipment only needs to make minor changes to the existing automatic plug-in equipment and the fixture part of the welding equipment, further reducing the investment and maintenance costs of the automation equipment, and the technical effect is more significant.

The above-mentioned embodiment only expresses one implementation mode of the present invention, and its description is relatively specific and detailed, but it should not be understood as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (7)

1. The plug-in welding process of Micro-USB plug and data line is characterized in that it comprises the following steps: Step A, preparing the shell (1), the base (2), the hook (4) and a plurality of electrical terminals (3), the tail ends of the electrical terminals (3) are set as widened welding pads (6) , the widened welding pad (6) is provided with an insertion hole (7), and the electrical terminal (3) is integrally formed with the widened welding pad (6); Step B, fixing a plurality of electrical terminals (3) on the injection molding machine, and injecting and molding the terminal base (5) by means of inlay injection molding; Step C, insert the hook (4) and the electrical terminal (3) on the terminal base (5) into the groove of the base (2); Step D: Put the connecting body of the terminal base (5) and the base (2) obtained in step C into the housing (1), and snap and snap them together to obtain a Micro-USB plug. 2. The plug-in welding process of Micro-USB plug and data line according to claim 1, characterized in that: it also includes step E, stripping the conductive wire (9) with at least four inner core wires (8) The conductive end is exposed, and the conductive end is inserted into the insertion hole (7). 3. The plug-in welding process of Micro-USB plug and data line according to claim 2, characterized in that: it also includes step F, welding and fixing the connection between the wire end and the insertion hole (7). 4. The plug-in welding process of Micro-USB plug and data line according to claim 3, characterized in that: in step E, automatic plug-in equipment is used for automatic plug-in. 5. The insertion welding process of Micro-USB plug and data line according to claim 3, characterized in that: in step F, automatic welding equipment is used for automatic welding and reinforcement. 6. The plug-in welding process of Micro-USB plug and data line according to claim 1, characterized in that: the widened welding pad (6) is formed by bending the tail of the electrical terminal (3). become. 7. The insertion welding process of Micro-USB plugs and data lines according to claim 1, characterized in that: the plurality of widened welding pads (6) are arranged in a line-shaped array.