CN2312532Y - electrical connector - Google Patents

Abstract

An electrical connector mountable on a substrate, comprising an insulating housing having at least a mounting face mountable towards the substrate, a plurality of terminals received in said insulating housing, and a securing means, characterised in that it further comprises a blocking means having a cylindrical body and a slot, wherein said cylindrical body extends from said mounting face, said slot is provided in a central portion of said cylindrical body, said securing means is received in said slot of said blocking means, and wherein said cylindrical body of said blocking means and said securing means are insertable together into a securing hole of the substrate.

Description

electrical connector

The utility model relates to an electric connector, in particular to an electric connector with a blocking device which can prevent solder or flux from adhering.

In the prior art, the electrical connector is fixed on the substrate by a fixing device. Most of these electrical connectors are stamped and made of metal materials. During the process of passing through the tin furnace for installation on the substrate, they often float, which makes the electrical connectors poorly fixed after soldering. In addition, the molten tin liquid may even pass through the fixing holes of the substrate and suck back along the fixing device toward the electrical connector, resulting in tin overflow, causing the solder to adhere to the terminals and cause a short circuit. Moreover, before the circuit board passes through the tin furnace, it will pass through the flux tank, and the flux in the tank can adhere to one side of the circuit board through the agitation of high-pressure gas, but the flux will also be adsorbed along the fixing device to the direction of the electrical connector. However, it adheres to the contact area of the terminal, causing the phenomenon that the terminal is not easy to conduct.

In order to solve the above problems, the interference area between the fixing device and the fixing hole of the circuit board is generally deepened and enlarged to prevent the electric connector from floating. In addition, the contact end of the terminal or fixing device and the circuit board is bent or made a small gap to prevent the liquid tin from adhering along the gap between the fixing device or terminal and the fixing hole. For the problem of flux sticking to the terminal, rinse with plenty of water and dry to solve it. However, increasing and deepening the interference area of the fixing device will increase the installation force of the electrical connector device on the substrate, easily cause damage to the circuit board, and increase the difficulty of manufacturing; the method of bending the terminal to prevent tin overflow , it will change the circuit configuration on the substrate; if the terminal is marked with a small gap, it will increase the difficulty of the process, and at the same time cause problems such as stress concentration and plating accumulation; rinse the circuit board with a large amount of water to remove the flux, which will inevitably cause considerable damage. Pollution, coupled with the consumption of electricity during drying and the increase of process steps, do not meet the requirements of environmental protection and cost saving.

From the above, it can be seen that the prior art does not provide an appropriate solution to the aforementioned problems, or there are still difficulties in its implementation and problems to be overcome.

The purpose of the utility model is to provide an electrical connector with a blocking device, which can prevent the electrical connector from floating and solder or flux from adhering to the terminals during the soldering process of the electrical connector to the substrate.

In order to achieve the above object, the utility model provides an electrical connector that can be mounted on a substrate, which includes: an insulating housing, at least having a mounting surface that can be installed toward the substrate; multiple connectors are accommodated in the insulating housing and a fixing device, which also includes a blocking device, which has a cylinder and a groove, wherein the cylinder extends from the mounting surface, and the groove is arranged in the center of the cylinder position, the fixing device is accommodated in the groove of the blocking device, and wherein the cylinder of the blocking device and the fixing device can be plugged together into the fixing hole of the substrate.

The advantage of the electrical connector of the present invention is that the cylinder of the blocking device can be inserted into the fixing hole of the substrate together with the fixing device to block the fixing hole, thereby preventing solder or flux from being sucked back along the fixing device toward the electrical connector This can result in solder, flux sticking to terminals or lifting of electrical connectors.

The preferred embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings. In the attached picture:

Figure 1 is a perspective view of the electrical connector of the present invention, wherein the bottom of the electrical connector is shown, and the fixing device is separated from the insulating housing of the electrical connector;

Figure 2 is a front view of the electrical connector of the present invention installed on the substrate, which shows the structure of part of the electrical connector and the substrate;

Fig. 3 is a side view of the electrical connector of the present invention installed on the substrate;

FIG. 4 is a bottom view of the electrical connector installed on the substrate of the present invention, which also shows the structure of part of the electrical connector and the substrate.

Referring to FIGS. 1 , 2 and 3 , the electrical connector 10 of the present invention mainly includes an insulating housing 12 , a plurality of terminals 14 , a blocking device 16 and a fixing device 18 . The insulating housing 12 has a mounting surface 122 , and the electrical connector 10 is mounted on the mounting surface 122 facing the substrate 20 . The plurality of terminals 14 are installed in the insulating housing 12 , protrude from the mounting surface 122 to the outside of the electrical connector 10 and are mounted on the substrate 20 . The blocking device 16 includes two parts: a tower portion 162 and a cylinder 166, wherein the tower portion 162 extends from the installation surface 122 toward the outside of the insulating housing 12, and has a covering surface at the other end of the tower portion 162 relative to the installation surface 122. 164, please refer to Fig. 4 at the same time, the area of the covering surface 164 can cover the entire area of the fixing hole 22 of the substrate 20, a cylinder 166 is extended from the covering surface 164 toward the outside of the insulating housing 12, and the outer diameter of the cylinder 166 is slightly smaller than The outer diameter of the fixing hole 22 of the substrate 20 is provided with a long slot 168 at a central portion thereof, and the fixing device 18 can be installed in the long slot 168 .

When the electrical connector 10 is mounted on the substrate 20, the terminals 14 are relatively inserted into the terminal insertion holes 24 of the substrate, the fixing device 18 is inserted into the fixing hole 22 of the substrate 20 together with the cylinder 166, and the fixing device 18 is fastened in the fixing hole 22. Periphery, the gap between the fixing hole 22 and the fixing device 18 is blocked by a cylinder 166, the tower portion 162 raises the insulating housing 12, and the covering surface 164 is flatly attached to the surface of the substrate 20 to prevent molten solder or flux along the fixing device 18 Suck back, thereby preventing tin spillage and preventing flux from adhering to terminals. In addition, the cylindrical body 166 is tightly fitted into the fixing hole 22 of the substrate 20 and can strengthen the fixing effect of the fixing device 18 to prevent the electric connector from floating.

Claims (5)

1. electric connector that can be installed on the substrate, it comprises: an insulation shell, having one at least can be towards the installed surface of substrate installing; A plurality of terminals that are accommodated in the described insulation shell, and fixture, it is characterized in that, it also comprises a baffling device, has a cylinder and a groove on it, and wherein said cylinder extends from described installed surface, described groove is arranged on described cylindrical central part, described fixture is accommodated in the described groove of described baffling device, and wherein, the described cylinder of described baffling device can plug in the fixing hole of substrate with described fixture.

2. electric connector as claimed in claim 1 is characterized in that, described baffling device is provided with a turriform portion of extending from the described installed surface of described insulation shell.

3. electric connector as claimed in claim 2 is characterized in that, described turriform portion has a coverage rate, and the Zone Full of the described fixing hole of substrate is contained in the zone of described coverage rate.

4. electric connector as claimed in claim 3 is characterized in that, the described cylinder of described baffling device is provided with to outside extension of described insulation shell from described coverage rate.

5. electric connector as claimed in claim 4, it is characterized in that, the described cylinder of described baffling device cooperates described fixture to plug in the described fixing hole, and described coverage rate covers on the described fixing hole, to prevent overflow tin and scaling powder adhesion electric connector.

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