Stud structure

Abstract

The utility model discloses a stud structure which is used for reducing the situation that a stud is separated from a circuit board. The stud structure comprises a screw part and a nut part, the nut part is arranged at the end of the screw part, the center of the screw part is aligned with the center of the nut part, and an anti-falling structure is arranged on the side, facing a circuit board, of the nut part. And the anti-falling structure is used for being welded with a bonding pad on the circuit board when the screw rod part penetrates through the circuit board.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit board device, and particularly relates to a stud structure. BACKGROUND

[0002] In the assembly of a circuit board (PCB), a copper stud is often used as a connecting element, for example, to fix and electrically connect adjacent electronic components or assemblies to the circuit board. A conventional copper stud is usually made of tin-plated brass material, and is designed in a circular shape for easy installation on the upper or lower part of the circuit board. The copper stud is connected to the solder pad copper foil on the circuit board through the tail part for soldering, so as to realize electrical conduction and mechanical fixation.

[0003] In the conventional soldering method, the tin plating layer on the surface of the copper stud is oxidized due to environmental factors (such as humidity and temperature fluctuation) or improper storage conditions, which makes it difficult for the solder to fully wet the plating layer during soldering, affecting the soldering quality. In addition, the contact area between the copper stud and the circuit board is relatively small, and during the wave soldering process, the solder cannot completely cover or penetrate all the contact surfaces, thereby reducing the soldering strength and causing the copper stud soldering end to peel off from the solder, that is, the copper stud and the circuit board are separated.

[0004] Based on this, the present application provides a stud structure to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0005] To solve the above technical problems, the present application provides a stud structure which can reduce the separation of the stud and the circuit board.

[0006] The stud structure provided by the present application comprises:

[0007] A screw rod part and a nut part, the nut part is arranged at the end of the screw rod part, and the screw rod part and the nut part are centrally aligned, the side of the nut part facing the circuit board is provided with an anti-separation structure, and the anti-separation structure is used for welding with the solder pad on the circuit board when the screw rod part penetrates through the circuit board.

[0008] Optionally, the anti-separation structure is a groove, and the groove is recessed on the nut part in a direction away from the circuit board.

[0009] Optionally, the groove is arranged in a ring shape on the nut part, and the center of the ring-shaped groove coincides with the center of the nut part.

[0010] Optionally, a plurality of grooves are arranged on the nut part at equal distances.

[0011] Optionally, the bottom of the groove is recessed and extended to both sides.

[0012] Optionally, the anti-disengagement structure is a ring-shaped spiral groove, which is recessed on the nut portion in a direction away from the circuit board.

[0013] Optionally, the end of the screw rod portion is provided with an extension portion, and the extension portion is provided with external threads.

[0014] Optionally, the nut portion and the center of the screw rod portion are provided with a connecting hole, and the connecting hole is provided with internal threads.

[0015] Optionally, the screw rod portion and the nut portion are made of tin-plated brass.

[0016] Optionally, the outer surface of the screw rod portion is provided with a plurality of barbs.

[0017] From the above technical solutions, the present application has the following effects:

[0018] The present application discloses a stud structure composed of a screw rod portion and a nut portion, the nut portion is arranged at the end of the screw rod portion, and the screw rod portion and the nut portion are aligned at the center, wherein an anti-disengagement structure is arranged on the side of the nut portion facing the circuit board, and the anti-disengagement structure is used to be welded with the pad on the circuit board when the screw rod portion penetrates the circuit board. By arranging the anti-disengagement structure, the connection strength between the anti-disengagement structure and the pad can be enhanced, and the anti-disengagement structure and the pad are not easy to fall off, thereby reducing the peeling of the solder between the soldered end of the stud structure and the pad, and further reducing the falling off between the stud structure and the circuit board, and enhancing the connection strength between the stud structure and the circuit board. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 One schematic view of a stud structure provided by the present application;

[0021] Figure 2 Another schematic view of a stud structure provided by the present application;

[0022] Figure 3 One top view schematic view of a stud structure provided by the present application;

[0023] Figure 4 Another top view schematic view of a stud structure provided by the present application;

[0024] Figure 5 Another schematic view of a stud structure provided for the present application;

[0025] Figure 6 Another schematic view of an extension in a stud structure provided for the present application;

[0026] Figure 7 Another schematic view of a barb in a stud structure provided for the present application;

[0027] Wherein, the screw rod part 01, the nut part 02, the circuit board 03, the solder pad 04, the groove 05, the ring type spiral groove 06, the extension 07, the barb 08, the connecting hole 09. DETAILED DESCRIPTION

[0028] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship shown in the drawings, and are used only to illustrate the relative positional relationship between the components or constituent parts, and do not particularly limit the specific installation orientation of the components or constituent parts.

[0029] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0030] In addition, the terms "mounting", "setting", "provided with", "connection", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two devices, elements or constituent parts. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0031] In addition, the structure, proportion, size, etc. shown in the drawings attached in the present application are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the limiting conditions that the present application can be implemented, and therefore do not have technical substantive significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect that the present application can produce and the purpose that the present application can achieve, still falls within the scope of the technical content disclosed by the present application.

[0032] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0033] The present application provides a stud structure for reducing the disengagement of the stud from a circuit board. The specific implementation process of the present application is described as follows.

[0034] Please refer to Figures 1 to 7 The stud structure provided by the present application comprises:

[0035] The screw rod part 01 and the nut part 02 are arranged at the end of the screw rod part 01, and the screw rod part 01 and the nut part 02 are aligned at the center. The side of the nut part 02 facing the circuit board 03 is provided with an anti-disengagement structure, which is used to be welded with the solder pad 04 on the circuit board 03 when the screw rod part 01 penetrates the circuit board 03.

[0036] The screw rod part 01 penetrates the circuit board 03, and the screw rod part 01 is connected with the electronic element or component, so as to fix the electronic element or component on the circuit board 03. The screw rod part 01 and the nut part 02 are connected to form a whole. The nut part 02 is connected at the end of the screw rod part 01, and the outer diameter of the nut part 02 is larger than that of the screw rod part 01. In actual use, the through hole is arranged on the circuit board 03. The screw rod part 01 penetrates the through hole until the side of the nut part 02 abuts against the solder pad 04 on the circuit board 03. The solder pad 04 is welded on the circuit board 03. The anti-disengagement structure is arranged between the solder pad 04 and the nut part 02. The connection strength between the anti-disengagement structure and the solder pad 04 is high, so that the connection strength between the nut part 02 and the solder pad 04 is improved, thereby reducing the disengagement of the nut part 02 from the circuit board 03.

[0037] The main function of the anti-disengagement structure is to enhance the connection strength between the nut part 02 and the solder pad 04 on the circuit board 03, and prevent the solder on the nut part 02 and the solder pad 04 from peeling off. The anti-disengagement structure can adopt various forms, such as a protruding solder leg, a special welding surface or an additional locking element.

[0038] When the screw rod part 01 penetrates the circuit board 03, the anti-disengagement structure of the nut part 02 will contact the solder pad 04 on the circuit board 03. Through the welding process (using soldering), reliable electrical connection and mechanical connection will be formed between the anti-disengagement structure and the solder pad 04, so as to ensure the stability and reliability of the stud structure.

[0039] In this embodiment, by setting the anti-dropping structure between the nut part 02 and the pad 04, a more secure welding connection can be formed during the welding process. Compared with the traditional stud structure, the stud structure of the present application has higher connection strength and better reliability, and can effectively prevent the stud from falling off due to factors such as vibration and impact during long-term use.

[0040] In an alternative embodiment, the anti-dropping structure is a groove 05, which is recessed on the nut part 02 away from the circuit board 03. In this embodiment, the groove 05 is provided on the side of the nut part 02 facing the circuit board 03 and is recessed away from the circuit board 03. The shape of the groove 05 can be circular, rectangular, elliptical, etc. Specifically, when the screw rod part 01 passes through the circuit board 03, the groove 05 of the nut part 02 will contact the pad 04 on the circuit board 03. During the welding process, the solder will fill these grooves 05, increasing the contact area of the solder and improving the security of the welding, thereby enhancing the connection strength between the nut part 02 and the circuit board 03.

[0041] Please continue to refer to Figure 3 In this alternative embodiment, the groove 05 is annularly arranged on the nut part 02, and the center of the annular groove 05 coincides with the center of the nut part 02. In this embodiment, the groove 05 is annular, forming a continuous circular or elliptical channel around the central axis of the nut part 02. When welding, the solder also enters the annularly arranged groove 05, thereby increasing the contact area of the solder with the nut part 02, thereby increasing the connection strength between the nut part 02 and the pad 04.

[0042] Please continue to refer to Figure 4 In this alternative embodiment, the nut part 02 is provided with a plurality of grooves 05, and the plurality of grooves 05 are arranged at equal distances on the nut part 02. In this embodiment, a plurality of grooves 05 are provided on the nut part 02, and the number of grooves 05 can be set according to actual needs, which is not limited here; each groove 05 is distributed at equal distances on the nut part 02, or can also be distributed at equal angles on the nut part 02 with the axis of the nut part 02 as the center, thereby uniformly distributing the solder between the nut part 02 and the circuit board 03 during the welding process, forming a more secure welding connection. The shape of each groove 05 can be circular, rectangular, elliptical or other suitable shapes, and the shape of each groove 05 can not be the same, such as using both circular and rectangular shapes. The design of multiple grooves 05 increases the welding area, so that the solder can more fully contact the nut part 02 and the pad 04 of the circuit board 03, thereby improving the security and reliability of the welding.

[0043] Please continue to refer to Figure 2In an alternative embodiment, the bottom of the groove 05 is recessed to both sides. In this embodiment, the bottom of the groove 05 is gradually expanded to both sides, forming a dovetail-like shape (dovetail groove), thereby increasing the contact area between the solder and the pad 04 of the nut part 02 and the circuit board 03 when soldering, and the solder can form a wedge-like structure after solidification, further enhancing the firmness of the connection.

[0044] Please continue to read Figure 5 In an alternative embodiment, the anti-disengagement structure is a ring-shaped spiral groove 06, which is recessed on the nut part 02 away from the circuit board 03. The ring-shaped spiral groove 06 is one or more continuous, spiral-shaped recesses 05 on the nut part 02, which increases the connection area between the solder and the nut part 02 through the spiral groove, thereby improving the connection strength between the pad 04 and the nut part 02.

[0045] Please continue to read Figure 6 In an alternative embodiment, the end of the screw rod part 01 is provided with an extension 07, and the extension 07 is provided with external threads. In order to facilitate the connection of other electronic components with the circuit board 03, in this embodiment, the extension 07 is provided on the end of the screw rod part 01 away from the nut part 02, and the extension 07 is provided with external threads, so that the screw rod part 01 can be connected with other electronic components through the extension 07, or the circuit board 03 can be fixedly connected in the case through the extension 07.

[0046] In an alternative embodiment, a connection hole 09 is provided at the center of the nut part 02 and the screw rod part 01, and the connection hole 09 is provided with internal threads. In this embodiment, the connection hole 09 is provided for the connection of other components with the connection hole 09, so as to realize the connection of other components on the circuit board 03; in addition, the size of the connection hole 09 matches the size of the extension 07 in the foregoing embodiment, so as to facilitate the connection of the extension 07 on the screw rod part 01 with the connection hole 09 on another screw rod part 01.

[0047] In an alternative embodiment, the screw rod part 01 and the nut part 02 are both made of tin-plated brass. In this embodiment, the tin-plating treatment further enhances the corrosion resistance of the brass surface, providing an additional protective layer to prevent further oxidation or corrosion of the brass, thereby prolonging the service life of the nut part 02 and the screw rod part 01.

[0048] Please continue to read Figure 7In an alternative embodiment, the outer surface of the screw portion 01 is provided with a number of barbs 08. The barbs 08 serve to increase the resistance of the screw portion 01 to be withdrawn from the circuit board 03, for further limiting the possibility of the nut portion 02 to be detached from the circuit board 03, in the present embodiment, the outer surface of the screw portion 01 is provided with barbs 08, which, when the screw portion 01 penetrates into the circuit board 03, abut in the perforations of the circuit board 03 as the screw portion 01 penetrates. When an attempt is made to withdraw the screw portion 01 from the circuit board 03, the abutting barbs 08 act as additional points of resistance, significantly increasing the force required to be extracted, thus preventing the nut portion 02 from being detached from the circuit board 03.

[0049] It is to be understood that the above description is illustrative of the application and not restrictive. Many other modifications and variations may occur to those skilled in the art. It is, therefore, to be understood that there is a disclosure of the application in such papers beyond what is described in the specification, morphologically defined by the claims, and / or shown in the drawings.

Claims

1. A stud structure, characterized in that, include: The screw portion and the nut portion are provided. The nut portion is located at the end of the screw portion and the center of the screw portion and the nut portion are aligned. The side of the nut portion facing the circuit board is provided with an anti-detachment structure. The anti-detachment structure is used to solder to the pads on the circuit board when the screw portion passes through the circuit board.

2. The stud structure according to claim 1, characterized in that, The anti-detachment structure is a groove, which is recessed on the nut portion in the direction away from the circuit board.

3. The stud structure according to claim 2, characterized in that, The groove is arranged in a ring shape on the nut portion, and the center of the ring-shaped groove coincides with the center of the nut portion.

4. The stud structure according to claim 2, characterized in that, The nut portion is provided with a plurality of grooves, which are arranged at equal intervals on the nut portion.

5. The stud structure according to claim 2, characterized in that, The bottom of the groove extends inward to both sides.

6. The stud structure according to claim 1, characterized in that, The anti-detachment structure is an annular spiral groove, which is recessed on the nut portion in the direction away from the circuit board.

7. The stud structure according to any one of claims 1 to 6, characterized in that, The end of the screw section is provided with an extension, and the extension is provided with an external thread.

8. The stud structure according to any one of claims 1 to 6, characterized in that, A connecting hole is provided at the center position of the nut part and the screw part, and an internal thread is provided in the connecting hole.

9. The stud structure according to any one of claims 1 to 6, characterized in that, Both the screw section and the nut section are made of tin-plated brass.

10. The stud structure according to any one of claims 1 to 6, characterized in that, The outer surface of the screw section is provided with several barbs.

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