Metal insert injection molding pin header

Abstract

The utility model discloses a metal insert injection molding pin header, the metal insert injection molding pin header comprises a support and at least one pin header terminal embedded on the support, the pin header terminal is of a U-shaped bending structure, two sides of the pin header terminal are provided with clamping hooks which are folded inwards, two sides of the support are provided with grooves, and the clamping hooks are arranged in the grooves. The pin header terminals are embedded in the grooves through the clamping hooks, and pins of the pin header terminals extend out of the bottom of the support along the side face of the support. According to the utility model, the welding area of the pin header pins can be increased, the pins are partially embedded into the support, the structure is firm, the pins are prevented from loosening, and the reliability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric connectors, and in particular relates to a metal insert injection molding pin header. Background Art

[0002] SMT pin headers are widely used in the field of electronics and electrical appliances. They play a role of connectivity in the circuit and perform the task of current or signal transmission. SMT pin headers are generally used in conjunction with mother headers, PCBs, etc. One end is used for chip welding and the other end is used for plug-in welding.

[0003] In the prior art, the SMT pin header has a simple structure, using metal pins pressed into plastic parts, one end of which is bent for patch mounting. The metal pins are fixed to the plastic parts by interference fit, which makes them easy to loosen during use. The contact area with the PCB is small during welding, and the product has low reliability in a vibration environment. Utility Model Content

[0004] The utility model aims to provide a metal insert injection molding pin header, which has a firm structure and a large welding area, thereby solving the problem of low reliability of the product in a vibration environment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a metal insert injection molded pin header, which comprises a bracket and at least one pin header terminal embedded in the bracket, the pin header terminal is a U-shaped bending structure, both sides of the pin header terminal are provided with inwardly folded hooks, both sides of the bracket are provided with grooves, the pin header terminal is embedded in the grooves through the hooks, and the pins of the pin header terminal extend out of the bottom of the bracket along the side of the bracket.

[0007] Optionally, both sides of the bracket are further provided with positioning concave surfaces for mounting the pin header terminal, the groove is arranged in the positioning concave surfaces, and the pin header terminal is mounted on the positioning concave surfaces.

[0008] Optionally, a positioning hole for positioning the pin terminal is provided at the bottom of the bracket.

[0009] Optionally, a welding hole is provided on the top of the pin terminal.

[0010] Optionally, the limiting surfaces on both sides of the positioning concave surface are flush with the side edges of the pins.

[0011] The beneficial effects of the utility model are:

[0012] The utility model not only increases the welding area with the PCB plug-in end by setting a U-shaped bending structure, but also increases the welding area with the PCB patch end by embedding the pin header terminal on the bracket surface; and ensures that the pin header terminal is firmly fixed to the bracket after the insert is injected by setting inwardly folded hooks on both sides of the pin header terminal. Through the above structure, the utility model can greatly improve the reliability of application in a vibration environment.

[0013] Furthermore, the present invention provides positioning concave surfaces on both sides of the pin header terminal and provides a pin header terminal positioning hole at the bottom of the bracket, thereby ensuring that the pin header terminal is well positioned and accurately sized during the injection molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the top surface structure of a technical insert injection-molded pin header of the utility model;

[0015] Figure 2 This is a schematic diagram of the bottom structure of a technical insert injection-molded pin header of the utility model;

[0016] Figure 3 This is a schematic diagram of the pin header terminal structure of a technical insert injection-molded pin header of the utility model;

[0017] Figure 4 This is a schematic diagram of the support structure of a technical insert injection-molded pin header of the utility model;

[0018] Figure 5 This is a welding schematic diagram of an implementation example of a technical insert injection molding pin header of the utility model.

[0019] Among them: 1. Pin terminal, 2. Bracket, 3. Welding hole, 4. Positioning concave surface, 5. Hook, 6. Pin, 7. Positioning hole, 8. SMD end PCB, 9. Plug-in end PCB, 10. Limiting surface, 11. Side. DETAILED DESCRIPTION

[0020] The present invention and its beneficial effects will be further described in detail below in conjunction with specific implementations and the accompanying drawings of the specification, but the specific implementations of the present invention are not limited thereto.

[0021] See also Figure 1 As shown, an embodiment of the utility model provides a metal insert injection molded pin header, which specifically includes a bracket 2 and at least one pin header terminal 1 embedded in the bracket, the pin header terminal 1 is a U-shaped bending structure, and both sides of the pin header terminal 1 are provided with inwardly folded hooks 5, and both sides of the bracket 2 are provided with grooves, and the pin header terminal 1 is embedded in the groove through the hooks 5.

[0022] In this embodiment, the bracket 2 is specifically a plastic bracket, the pin terminal 1 is a metal terminal, and the pin terminal 1 is a U-shaped bending structure for insert injection molding. The pin terminal 1 is divided into pins 6 on both sides. The inner side of the upper half of the pin 6 is embedded in the bracket 2 through a hook, and the lower half of the pin 6 extends out of the bottom of the bracket 2 along the side of the bracket 2. The pin terminal 1 is provided with hooks 5 folded inward on both sides and embedded in the groove of the bracket 2, thereby ensuring that the pin terminal 1 is firmly combined with the bracket 2 after insert injection molding and is not easy to loosen.

[0023] See also Figure 3 As shown, the hook 5 and the pin 6 are at a certain angle, and after the insert is injected, the hook 5 will be completely buried in the groove of the bracket 2, thereby achieving a tight fit.

[0024] See also Figure 5 As shown, the pin terminal 1 is embedded in the surface of the bracket 2, and a U-shaped bending arrangement is adopted to form a double row of pins 6, thereby obtaining a larger welding area.

[0025] See also Figure 2 and Figure 4 As shown, in one embodiment, positioning concave surfaces for mounting the pin header terminals 1 are further provided on both sides of the bracket 2 , the grooves are provided in the positioning concave surfaces 4 , and the pin header terminals 1 are mounted on the positioning concave surfaces 4 .

[0026] In this embodiment, the width of the upper part of the pin 6 is consistent with the width of the positioning concave surface 4, so the limiting surface 10 on one side of the positioning concave surface 4 is flush with the side edge 11 of the upper part of the pin, ensuring that the pin terminal 1 will not deviate left or right during injection molding in the mold.

[0027] In one embodiment, a positioning hole for positioning the pin header terminal 1 is provided at the bottom of the bracket 2, so that the mold can press the pin header terminal 1 tightly, ensuring that the pin header terminal 1 will not deviate up and down during injection molding in the mold. The above structure enables the pin header terminal 1 to be well positioned during the injection molding process and have accurate dimensions.

[0028] In one embodiment, a welding hole 3 is provided on the top of the pin terminal 1. Figure 5 As shown, when soldering the patch end PCB8, the top surface of the pin terminal 1 and the soldering hole 3 can be well combined with the tin, and when soldering the plug-in end PCB9, the double-row pins 6 can be well combined with the tin, thereby ensuring firm soldering and making the product more reliable, especially when used in a vibration environment.

[0029] The above implementations should not be regarded as limiting the present invention, and the protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several equivalent substitutions, improvements and modifications can be made without departing from the spirit and scope of the present invention. For example, according to different application scenarios, the circuit can be fine-tuned by simple series and parallel connection of devices, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A metal insert injection molded pin header, characterized in that: The metal insert injection molded pin header includes a bracket and at least one pin header terminal embedded in the bracket, the pin header terminal is a U-shaped bending structure, both sides of the pin header terminal are provided with inwardly folded hooks, both sides of the bracket are provided with grooves, the pin header terminal is embedded in the grooves through the hooks, and the pins of the pin header terminal extend out of the bottom of the bracket along the side of the bracket.

2. The metal insert injection molding pin header according to claim 1, characterized in that: Positioning concave surfaces for mounting the pin header terminals are also provided on both sides of the bracket, the grooves are arranged in the positioning concave surfaces, and the pin header terminals are mounted on the positioning concave surfaces.

3. The metal insert injection molding pin header according to claim 1, characterized in that: A positioning hole for positioning the pin terminal is provided at the bottom of the bracket.

4. The metal insert injection molding pin header according to claim 1, characterized in that: A welding hole is provided on the top of the pin terminal.

5. The metal insert injection molding pin header according to claim 2, characterized in that: The limiting surfaces on both sides of the positioning concave surface are flush with the side edges of the pins.

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