Electrical device pin structure and installation method to prevent welding tipping and floating

Abstract

The present invention relates to an electrical device pin structure for preventing welding from tipping and floating, comprising a pin body and a support assembly connected to the pin body; the support assembly comprises a first component and a second component with elasticity, the first component is connected to the upper part of the pin body, and the second component is connected to the lower part of the pin; the first component extends outwardly from top to bottom, and the lower end of the first component has a first hook body curled inward; the second component is bent, and the second component first extends outwardly from bottom to top, and then extends inwardly; the upper end of the second component has a second hook body curled outward, and the second hook body can match and hook with the first hook body when the second component is deformed. The electrical device pin structure for preventing welding from tipping and floating has a good effect of preventing welding from tipping and floating, and has a simple structure and low cost. The present invention also relates to an installation method of the electrical device pin structure, which is also simple to operate, has fewer processes, and greatly improves processing efficiency.

Description

Technical Field

[0001] The invention relates to an electrical device pin structure that can prevent soldering, tipping and floating, and also relates to an installation method of the electrical device pin structure that can prevent soldering, tipping and floating. Background Art

[0002] For electrical components with a high center of gravity, especially electrical components such as touch spring buttons, wave soldering is required when processing on PCB boards. Due to the effect of the solder paste spray force, it is easy to cause tipping and floating of the soldered components, resulting in the need for secondary rework of the processed PCB boards or the scrapping of the components. At present, the market mainly adopts the method of making tooling fixtures to prevent tipping and floating problems during welding. For example, the Chinese utility model patent "Jig for improving floating and false soldering of USB devices" with the authorization announcement number CN209716712U (application number 201821961178.2) and the Chinese utility model patent "Correction jig for welding USB on circuit boards" with the authorization announcement number CN206596291U (application number 201720174458.8) disclose solutions that require special jigs to avoid floating and false soldering problems of USB devices during welding. If a corresponding fixture is required for each product device, the production cost of the product will be greatly increased. In addition, during the production process, an additional fixture placement environment will be required, and the number of production processes will increase.

[0003] For spring keys, heavy objects are placed on the spring keys to be wave soldered before wave soldering. However, the finished spring keys still have problems of tipping over and floating after production, which cannot fundamentally solve the problem. In addition, the production environment increases the number of processes and rework, and also results in material scrapping costs. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide an electrical component pin structure that is simple in structure, low in cost and can prevent the problems of tipping and floating during the welding process.

[0005] The second technical problem to be solved by the present invention is to provide a method for installing an electrical component pin structure that can prevent soldering from tipping over and floating, which does not require external tools and is easy to install and has an accurate installation position.

[0006] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a structure of an electrical device pin that prevents welding from tipping and floating, including a pin body, characterized in that: it also includes a support assembly connected to the pin body; the support assembly includes a first component and a second component with elasticity, the first component is connected to the upper part of the pin body, and the second component is connected to the lower part of the pin body; the first component extends outwardly from top to bottom, and the lower end of the first component has a first hook body curled inwardly; the second component is bent, and the second component first extends outwardly from bottom to top, and then extends inwardly; the upper end of the second component has a second hook body curled outwardly, and the second hook body can match and hook with the first hook body when the second component is deformed.

[0007] In order to increase the flatness of the second section and improve the anti-dumping and limiting effects on the pipe foot section, the second component includes a first section inclined outward from bottom to top and a second section inclined inward from bottom to top, and the length of the first section is greater than that of the second section.

[0008] In order to improve the success rate of hooking the first hook body with the second hook body, the first hook body and the second hook body are arranged to be externally connected when the first component and the second component are not deformed.

[0009] In order to facilitate assembly on the PCB board, the first component enters the mounting hole to form a support in the mounting hole, and the angle between the first component and the axis of the tube foot body is smaller than the angle between the lower part of the second component and the axis of the tube foot body.

[0010] Preferably, the angle between the first member and the main axis of the pipe foot is A, 5°<A<30°;

[0011] The angle between the lower part of the second component and the main axis of the pipe foot is B, 30°<B<60°.

[0012] In order to effectively ensure the anti-dumping and floating functions, the extension distance of the first component in the axis direction of the foot body is L;

[0013] The vertical distance between the bending point of the second member and the foot body is H; the diameter of the foot body is D:

[0014] Then (D+a) / 2≤H<L, where 0<a<D.

[0015] As an improvement, the support components are provided in at least three groups and are evenly distributed along the circumference of the pipe foot body.

[0016] The technical solution adopted by the present invention to solve the second technical problem is: a method for installing the above-mentioned electrical device pin structure to prevent soldering from tipping and floating, characterized in that it includes the following steps:

[0017] S1. Align the lower end of the tube foot body with the mounting hole on the PCB board;

[0018] S2, pressing the tube foot body relative to the PCB board so that the tube foot body is inserted into the mounting hole;

[0019] S3, as the tube foot body moves downward relative to the PCB board, the second member is squeezed and deformed inward by the mounting hole, and at the same time, the second hook body moves upward and moves toward the inside of the first hook body as the second member is deformed;

[0020] S4, when the bent portion of the second component passes through the mounting hole, the second component gradually returns to its original state, and during the process of the second component returning to its original state, the second hook body is hooked with the first hook body;

[0021] S5. When the hooking position of the second hook body and the first hook body reaches the lower surface of the PCB board, the tube foot body is installed in place on the PCB board. At this time, the lower end of the first component is located in the mounting hole and is in a tightened state. Under the outward elastic force of the first component, the tube foot body can be firmly placed in the mounting hole, and under the support and limiting action of the second component, the tube foot body can be effectively prevented from tipping over or floating during the wave soldering process.

[0022] Compared with the prior art, the advantages of the present invention are: the electrical device pin structure that prevents soldering from tipping over and floating up can support the installation of the pin body in the mounting hole of the PCB board through the elastic and hookable first and second components, thereby achieving the effect of anti-tipping and floating up. The electrical device pin structure that prevents soldering from tipping over and floating up is simple in structure and low in cost. During installation, no additional auxiliary tools are required, the operation is simple, and the process is few, which greatly improves the processing efficiency. The installation method of the electrical device pin structure that prevents soldering from tipping over and floating up is simple and easy to use, and no special training is required, which reduces the cost of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 1 is a structural diagram of an electrical component pin structure that prevents soldering from tipping over and floating in an embodiment of the present invention.

[0024] Figure 2 This is a structural diagram of the electrical device pin structure after being installed in place on the PCB board in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings.

[0026] like Figure 1 As shown, the electrical device pin structure for preventing soldering from tipping over and floating in this embodiment includes a pin body 1 and a support assembly connected to the pin body 1 .

[0027] The supporting assembly includes a first component 2 and a second component 3 having elasticity. For example, the first component 2 and the second component 3 can be made of metal material to maintain elasticity.

[0028] The first member 2 is connected to the upper part of the tube foot body 1, and the second member 3 is connected to the lower part of the tube foot. The first member 2 extends obliquely from top to bottom toward the outer side of the tube foot body 1, and the lower end of the first member 2 has a first hook body 21 curled inward.

[0029] The second member 3 is connected to the lower part of the tube foot body 1, and the second member 3 is bent. The second member 3 first extends outwardly from bottom to top and then extends inwardly. The upper end of the second member 3 has a second hook body 31 curled outward, and the second hook body 31 can match and hook with the first hook body 21 when the second member 3 is deformed. And the first hook body 21 and the second hook body 31 are arranged to be externally cut when the first member 2 and the second member 3 are not deformed, so that the success rate of the hooking of the first hook body 21 and the second hook body 31 can be improved. In this embodiment, the bend is an arc transition. The bending structure of the second member 3 enables the second member 3 to form a first segment body 32 tilted outward from bottom to top and a second segment body 33 tilted inward from bottom to top. The length of the first segment body 32 is greater than the length of the second segment body 33. In this way, when the electrical device pin structure is installed in the mounting hole of the PCB board 4, the second segment body 33 is smoother relative to the plane where the PCB board 4 is located, thereby improving the support and limiting ability of the second member 3 to the tube foot body 1.

[0030] In addition, the angle between the first component 2 and the axis of the tube foot body 1 is smaller than the angle between the lower portion of the second component 3 and the axis of the tube foot body 1. In this embodiment, the angle between the first component 2 and the axis of the tube foot body 1 is A, 5°<A<30°, and the angle between the lower portion of the second component 3 and the axis of the tube foot body 1 is B, 30°<B<60°. That is, the angle between the first component 2 and the axis of the tube foot body 1 is smaller than the angle between the lower portion of the second component 3 and the axis of the tube foot body 1, so that the first component 2 and the second component 3 are conveniently hooked, thereby driving the first component 2 to enter the mounting hole of the PCB board 4, thereby forming a tight support in the mounting hole.

[0031] The extension distance of the first member 2 in the axial direction of the tube foot body 1 is L. The vertical distance between the bending point of the second member 3 and the tube foot body 1 is H; the diameter of the tube foot body 1 is D. Then (D+a) / 2≤H<L, where 0<a<D, which can effectively ensure the limiting effect of the second hook body 31 on the PCB board 4, and prevent the second hook body 31 from retracting into the mounting hole of the PCB under the action of the welding spray force. The specific value of a can be determined according to the D value.

[0032] In order to improve the stability of the support assembly in preventing tipping and buoyancy of the pipe leg body 1, the support assembly is provided with at least three groups and evenly distributed along the circumference of the pipe leg body 1, thereby forming stable support and limiting around the pipe leg body 1.

[0033] The aforementioned method for installing the electrical device pin structure to prevent soldering tipping and floating comprises the following steps:

[0034] S1, aligning the lower end of the pin body 1 with the mounting hole on the PCB board 4, wherein the mounting hole is specifically designed according to the diameter of the pin body 1 and the sizes of the first component 2 and the second component 3, so as to ensure that the electrical device pin structure that prevents soldering from tipping and floating can be stably installed in the mounting hole;

[0035] S2, pressing the tube foot body 1 relative to the PCB board 4, so that the tube foot body 1 is inserted into the mounting hole;

[0036] S3, as the tube foot body 1 moves downward relative to the PCB board 4, since the lower end of the second member 3 is directly connected to the tube foot body 1, the second member 3 can enter the mounting hole as the tube foot body 1 moves downward, and the second member 3 is tightened and deformed inwardly under the extrusion of the mounting hole, and at the same time, the second hook body 31 moves upward and moves to the inside of the first hook body 21 as the second member 3 is deformed;

[0037] S4. After the bending part of the second member 3 passes through the mounting hole, the second member 3 gradually expands outward until it returns to its original shape, and in the process of the second member 3 returning to its original shape, the second hook body 31 moves downward and outward, and then hooks with the first hook body 21; after the second hook body 31 hooks with the first hook body 21, it can drive the first member 2 to enter the mounting hole, that is, the lower end of the first member 2 will also be tightened and deformed after entering the mounting hole, and the first member 2 has an outward expansion force on the inner wall of the mounting hole;

[0038] S5, such as Figure 2 As shown, when the hooking position of the second hook body 31 and the first hook body 21 reaches the lower surface of the PCB board 4, the operator will have an obvious feeling, and the operator can stop pushing the tube foot body 1. At this time, the tube foot body 1 is installed in place on the PCB board 4. At this time, the lower end of the first component 2 is located in the mounting hole and is in a tightened state. Under the outward elastic force of the first component 2 on the inner ratio of the mounting hole, the tube foot body 1 can be firmly placed in the mounting hole, and under the support and limiting action of the second component 3, it can effectively avoid the tube foot body 1 from tipping over and floating during the wave soldering process, thereby ensuring the welding effect of the tube foot body 1 on the PCB board 4.

[0039] The electrical device pin structure that prevents soldering from tipping and floating can support the installation of the pin body 1 in the mounting hole of the PCB board 4 through the elastic and hookable first component 2 and the second component 3, thereby achieving the effect of anti-tipping and floating. The electrical device pin structure that prevents soldering from tipping and floating is simple in structure and low in cost. During installation, no additional auxiliary tools are required, the operation is simple, and the process is few, which greatly improves the processing efficiency. The installation method of the electrical device pin structure that prevents soldering from tipping and floating is simple and easy to use, and no special training is required, which reduces the cost of the enterprise.

[0040] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A structure for preventing soldering from tipping over and floating up of an electrical device pin, comprising a pin body (1), characterized in that: The invention also comprises a support assembly connected to the tube foot body (1); the support assembly comprises a first elastic member (2) and a second member (3); the first member (2) is connected to the upper part of the tube foot body (1), and the second member (3) is connected to the lower part of the tube foot body; the first member (2) extends outwardly from top to bottom, and the lower end of the first member (2) has a first hook body (21) curled inwardly; the second member (3) is bent, and the second member (3) extends outwardly from bottom to top, and then extends inwardly; the upper end of the second member (3) has a second hook body (31) curled outwardly, and the second hook body (31) can match and hook with the first hook body (21) when the second member (3) is deformed; The second component (3) comprises a first segment (32) inclined outward from bottom to top and a second segment (33) inclined inward from bottom to top, wherein the length of the first segment (32) is greater than the length of the second segment (33); The first hook body (21) and the second hook body (31) are arranged to be externally connected when the first component (2) and the second component (3) are not deformed; The angle between the first component (2) and the axis of the tube foot body (1) is smaller than the angle between the lower part of the second component (3) and the axis of the tube foot body (1); The extension distance of the first component (2) in the axial direction of the pipe foot body (1) is L; The vertical distance between the bending point of the second member (3) and the foot body (1) is H; the diameter of the foot body (1) is D; Then (D+a) / 2≤H<L, where 0<a<D.

2. The electrical component pin structure for preventing soldering from tipping over and floating according to claim 1, characterized in that: The angle between the first component (2) and the axis of the pipe foot body (1) is A, 5°<A<30°; The angle between the lower part of the second component (3) and the axis of the pipe foot body (1) is B, 30°<B<60°.

3. The electrical component pin structure for preventing soldering from tipping over and floating according to claim 1, characterized in that: The support components are provided in at least three groups and are evenly distributed along the circumference of the pipe foot body (1).

4. A method for installing an electrical device pin structure that prevents soldering from tipping over and floating as claimed in any one of claims 1 to 3, characterized in that: The following steps are involved: S1, align the lower end of the tube foot body (1) with the mounting hole on the PCB board (4); S2, pressing the tube foot body (1) downward relative to the PCB board (4) so ​​that the tube foot body (1) is inserted into the mounting hole; S3, as the tube foot body (1) moves downward relative to the PCB board (4), the second component (3) is squeezed inward and deformed by the mounting hole, and at the same time, the second hook body (31) moves upward and moves toward the inside of the first hook body (21) as the second component (3) deforms; S4. After the bent portion of the second component (3) passes through the mounting hole, the second component (3) gradually returns to its original state, and during the process of the second component (3) returning to its original state, the second hook body (31) is hooked with the first hook body (21); S5. When the hooking position of the second hook body (31) and the first hook body (21) reaches the lower surface of the PCB board (4), the tube foot body (1) is installed in place on the PCB board (4), and at this time, the lower end of the first component (2) is located in the installation hole and is in a tightened state.

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