Laser welding fuzz button assembly

Abstract

The utility model provides a laser welding fuzz button assembly, which belongs to the technical field of electric connectors and comprises a fixing cap and a fuzz button, the fuzz button is of a net-shaped hollow cylindrical structure, and the bottom part of the fuzz button is arranged inside the fixing cap and fixedly connected with the inside of the fixing cap. The bottom part of the fuzz button is fixedly connected with the fixing cap, and the fuzz button can deform, so that the height space proportion is reduced, the assembly space is effectively saved, the fuzz button can be suitable for miniaturized equipment, and electric connection in the miniaturized equipment is realized; the fixing cap comprises a first connecting part, a second connecting part and a third connecting part; the circumferential outer wall of the first connecting part is in interference fit with the base, so that the whole laser welding fuzz button assembly is prevented from falling off from the base; the arrangement of the second connecting part facilitates the positioning between the whole laser welding fuzz button assembly and the base; and a third connecting part is arranged in the fixing cap, so that the whole laser welding fuzz button assembly can be conveniently welded with the printed board.

Description

Technical Field

[0001] This utility model belongs to the field of electrical connector technology, and in particular relates to a laser-welded wool button assembly. Background Technology

[0002] Currently, the application of flyback buttons achieves signal and current transmission through a "fixed cap—flyback button—flyback button—fixed cap" process, enabling signal transmission between printed circuit boards. However, as equipment develops towards miniaturization, lightweighting, and high reliability, the above method has the following drawbacks:

[0003] 1. For applications with strict space requirements, the height of the fixing caps on both sides of the bobby button accounts for a large proportion of the space; in order to prevent the bobby button from falling off the base, it is necessary to add accessories for locking, thereby increasing the horizontal space of the product.

[0004] 2. Increasing the contact surface, such as the contact between the PCB and the fixing cap, the contact between the button and the button, and the contact between the button and the fixing cap, increases the signal transmission path, increases signal propagation delay, and affects signal integrity.

[0005] 3. When the button contact is used in conjunction with the fixing cap, the fixing cap is prone to causing wear on the PCB pads, affecting the life of the component. Utility Model Content

[0006] In view of the above-mentioned problems in the prior art, the present invention aims to provide a laser-welded rough button assembly, which solves the problem that the existing rough buttons have a large height space ratio.

[0007] To achieve the above-mentioned utility model objectives, the technical solution adopted by this utility model is as follows: A laser-welded bobbin button assembly is provided, which includes a fixing cap and a bobbin button. The bobbin button has a mesh-like hollow cylindrical structure, and the bottom part of the bobbin button is disposed inside the fixing cap and fixedly connected to the inside of the fixing cap.

[0008] Furthermore, the fixing cap includes a first connecting part, a second connecting part, and a third connecting part, all of which are cylindrical and coaxially arranged with the bobby button;

[0009] The first connecting part has a hollow cylindrical structure, and the bottom part of the hair button is located inside the first connecting part. The outer circumferential wall of the first connecting part is press-fitted with the base.

[0010] The top of the second connecting part is fixedly connected to the bottom of the first connecting part. The second connecting part has a solid cylindrical structure. The outer diameter of the second connecting part is larger than the outer diameter of the first connecting part. The upper end face of the second connecting part is fixed to the lower end face of the base.

[0011] The top of the third connecting part is fixedly connected to the bottom of the second connecting part. The outer diameter of the third connecting part is smaller than the outer diameter of the first connecting part. The lower end face of the third connecting part is a planar structure and is welded to the printed circuit board.

[0012] The first connecting part, the second connecting part, and the third connecting part are integrated into one structure, which facilitates the production and manufacturing of the entire fixing cap.

[0013] Furthermore, an annular groove is provided on the top of the third connecting portion.

[0014] Furthermore, the connection between the wool button and the interior of the first connecting part is achieved by laser welding.

[0015] Furthermore, a laser welding hole communicating with the interior is provided on the outer circumferential wall of the first connecting part, and the diameter of the laser welding hole is 0.1 mm.

[0016] Furthermore, the axis of the laser weld hole is perpendicular to the axis of the first connecting part, and the laser weld hole penetrates the entire first connecting part.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. This utility model provides a laser-welded bobbin button assembly. The bottom part of the bobbin button is fixedly connected to the fixing cap. The bobbin button itself can deform, reducing the height space ratio and effectively saving assembly space. It can be applied to miniaturized equipment to realize electrical connection inside miniaturized equipment.

[0019] 2. This utility model provides a laser-welded wool button assembly. The third connecting part in the fixing cap facilitates the welding of the entire laser-welded wool button assembly to the printed circuit board. The annular groove in the third connecting part prevents solder creep during the welding process from causing cold solder joints. The second connecting part facilitates the positioning of the entire laser-welded wool button assembly and the base. The outer circumference of the first connecting part is interference-fitted with the base to prevent the entire laser-welded wool button assembly from falling off the base.

[0020] 3. This utility model provides a laser-welded button assembly. The button and the fixing cap are connected and fixed by laser welding. Laser welding is a non-contact welding method with high power density, small heat-affected zone, and advantages such as fast welding speed, high precision, large depth, small deformation, no weld contamination, and high welding quality. During the welding process, the fixing cap and the button melt and solidify together after cooling, making the entire laser-welded button assembly easy to process. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a laser-welded button assembly.

[0022] Among them, 1. fixing cap; 11. first connecting part; 12. second connecting part; 13. third connecting part; 2. wool button; 3. annular groove; 4. laser weld hole. Detailed Implementation

[0023] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All inventions utilizing the concept of this utility model are protected.

[0024] like Figure 1 As shown, this utility model provides a laser-welded button assembly, which includes a fixing cap 1 and a button 2. The button 2 has a mesh-like hollow cylindrical structure, and the bottom part of the button 2 is disposed inside the fixing cap 1 and fixedly connected to the inside of the fixing cap 1.

[0025] The bottom part of the button 2 is fixedly connected to the fixing cap 1. The button 2 itself can deform, reducing the height space ratio and effectively saving assembly space. It can be applied to miniaturized equipment to realize the electrical connection inside the miniaturized equipment.

[0026] Specifically, the fixing cap 1 includes a first connecting part 11, a second connecting part 12, and a third connecting part, all of which are cylindrical and coaxially arranged with the button 2. The first connecting part 11 is a hollow cylindrical structure, and the bottom part of the button 2 is disposed inside the first connecting part 11. The outer circumferential wall of the first connecting part 11 is press-fitted with the base to prevent the entire laser-welded button assembly from falling off the base.

[0027] The top of the second connecting part 12 is fixedly connected to the bottom of the first connecting part 11. The second connecting part 12 has a solid cylindrical structure. The outer diameter of the second connecting part 12 is larger than the outer diameter of the first connecting part 11. The upper end face of the second connecting part 12 is fixed to the lower end face of the base, which facilitates the positioning of the entire laser-welded button assembly with the base.

[0028] The top of the third connecting part is fixedly connected to the bottom of the second connecting part 12. The outer diameter of the third connecting part is smaller than the outer diameter of the first connecting part 11. The lower end face of the third connecting part is a planar structure and is welded to the printed circuit board, which facilitates the welding of the entire laser-welded button assembly to the printed circuit board. The first connecting part 11, the second connecting part 12 and the third connecting part 13 are an integrated structure, which facilitates the production and manufacturing of the entire fixing cap 1.

[0029] Preferably, but not limited to, the top of the third connecting part is provided with an annular groove 3 to prevent solder from creeping up and causing poor soldering during the soldering process.

[0030] Specifically, the connection between the button 2 and the interior of the first connecting part 11 is achieved by laser welding. A laser welding hole 4, with a diameter of 0.1 mm, is provided on the outer circumference of the first connecting part 11 and communicates with its interior. The axis of the laser welding hole 4 is perpendicular to the axis of the first connecting part 11, and the laser welding hole 4 penetrates the entire first connecting part 11, facilitating the laser welding gun to weld the button 2 and the fixing cap 1 through the laser welding hole 4. The button 2 and the fixing cap 1 are connected and fixed by laser welding. Laser welding is a non-contact welding method with high power density, a small heat-affected zone, and advantages such as fast welding speed, high precision, large depth, small deformation, no weld contamination, and high welding quality. During the welding process, the fixing cap 1 and the button 2 melt and solidify together after cooling, making the entire laser-welded button assembly easy to process.

[0031] In summary, the laser-welded button assembly of this utility model is easy to process, small in size, and highly reliable, and can be applied to miniaturized equipment to realize electrical connections inside miniaturized equipment.

Claims

1. A laser-welded felt button assembly, characterized in that, It includes a fixing cap and a fleece button. The fleece button has a mesh-like hollow cylindrical structure, and the bottom part of the fleece button is located inside the fixing cap and is fixedly connected to the inside of the fixing cap.

2. The laser-welded button assembly according to claim 1, characterized in that, The fixing cap includes a first connecting part, a second connecting part, and a third connecting part, all of which are cylindrical and coaxially arranged with the bobby button; The first connecting part has a hollow cylindrical structure, and the bottom part of the hair button is located inside the first connecting part. The outer circumferential wall of the first connecting part is press-fitted with the base. The top of the second connecting part is fixedly connected to the bottom of the first connecting part. The second connecting part has a solid cylindrical structure. The outer diameter of the second connecting part is larger than the outer diameter of the first connecting part. The upper end face of the second connecting part is fixed to the lower end face of the base. The top of the third connecting part is fixedly connected to the bottom of the second connecting part. The outer diameter of the third connecting part is smaller than the outer diameter of the first connecting part. The lower end face of the third connecting part is a planar structure and is welded to the printed circuit board. The first connecting part, the second connecting part, and the third connecting part are an integrated structure.

3. The laser-welded button assembly according to claim 2, characterized in that, The top of the third connecting part is provided with an annular groove.

4. The laser-welded button assembly according to claim 2, characterized in that, The connection between the wool button and the interior of the first connecting part is achieved by laser welding.

5. The laser-welded button assembly according to claim 4, characterized in that, The outer circumferential wall of the first connecting part is provided with a laser welding hole communicating with its interior, and the diameter of the laser welding hole is 0.1 mm.

6. The laser-welded button assembly according to claim 5, characterized in that, The axis of the laser weld hole is perpendicular to the axis of the first connecting part, and the laser weld hole penetrates the entire first connecting part.

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