Butterfly welding nut with counter bore

Abstract

The utility model relates to a butterfly welding nut with a counter bore, which is used for fixing an automobile plate. The nut comprises a threaded cylindrical part with an internal thread, a butterfly-shaped flange part which is in butterfly-shaped non-circular symmetry, a plurality of counter bores which are uniformly formed in the upper surface of the butterfly-shaped flange part, and a plurality of circular welding spots which are uniformly arranged on the lower surface of the butterfly-shaped flange part and are used for welding and dissolving; the threaded cylindrical part is used for connecting an assembly part; one end of the threaded cylindrical part is connected with the butterfly-shaped flange part, and the threaded cylindrical part and the butterfly-shaped flange part are concentric; two parallel flange edges of the butterfly-shaped flange part are used for positioning; the diameter of the round welding spot is larger than that of the counter bore. During installation, flange straight-edge double-edge positioning is directly formed, and the force of a double-edge positioning assembly part directly acts on the threaded cylindrical part without steering.

Description

Technical Field

[0001] This utility model relates to the field of fasteners for automobiles, and in particular to a high-efficiency wing-shaped weld nut with countersunk holes for use on automotive panel holes. Background Technology

[0002] With the development of science and technology and the rapid evolution of automotive products, lightweight design has become imperative. Automotive parts are a crucial area for my country's automotive industry to participate in globalization; therefore, fastener products face higher requirements, demanding greater safety and cost-effectiveness to better cope with the ever-changing market. These high requirements often necessitate specialized designs to meet user needs, while also requiring more advanced and sophisticated forming processes.

[0003] With the expansion of the domestic automobile consumer market and the increasing diversification of people's car usage concepts, newer and more comprehensive fastener products are necessary to better cope with the ever-changing market and create a better and more convenient automotive safety experience for consumers. For welded nuts used to connect automotive parts on sheet metal, problems such as weld misalignment and incomplete welds often plague assemblers, affecting the vehicle's performance and lifespan.

[0004] Therefore, there is room for improvement in the existing technology of welded nuts. Utility Model Content

[0005] The purpose of this invention is to provide a simpler and safer wing-shaped weld nut with countersunk holes for use on automotive panel holes, in order to solve the problems of the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A wing-shaped welding nut with countersunk holes is used to fix automotive sheet metal. The nut includes a threaded cylindrical portion with internal threads, a wing-shaped flange portion with non-circular symmetry, a plurality of countersunk holes evenly arranged on the upper surface of the wing-shaped flange portion, and a plurality of circular weld points evenly arranged on the lower surface of the wing-shaped flange portion for welding melting. The threaded cylindrical portion is used to connect assembly parts; one end of the threaded cylindrical portion is connected to the wing-shaped flange portion, and the threaded cylindrical portion and the wing-shaped flange portion are concentric; two parallel flange edges of the wing-shaped flange portion are used for positioning; the diameter of the circular weld points is larger than the diameter of the countersunk holes.

[0008] According to the preferred embodiment of the present invention, the countersunk hole of the butterfly weld nut with a countersunk hole is a frustum-shaped groove.

[0009] According to a preferred embodiment of the present invention, the number of countersunk holes is four; the number of circular weld points is four, the four countersunk holes are provided corresponding to the four circular weld points, and the countersunk holes and the circular weld points are concentric.

[0010] According to the preferred embodiment of the present invention, the winged welding nut with countersunk hole is integrally formed by the threaded cylindrical part, the winged flange part, the countersunk hole, and the round weld point.

[0011] According to the preferred embodiment of the present invention, the internal thread of the threaded cylindrical portion of the butterfly weld nut with countersunk hole is a standard thread.

[0012] The design concept of this application is to design a welding nut with a butterfly flange that has a connecting function, which directly forms a double-sided positioning without rotation when installing the assembly. This avoids problems such as rotation, incomplete welding, and damage to the plate during the assembly process. When ordinary pins are tilted or screwed into the inner hole in other abnormal ways, problems such as rotation, jamming, and seizing can easily occur, affecting the efficiency of assembly and the safety of operation. However, the butterfly flange of this application with a countersunk hole has a non-circular symmetrical butterfly flange. When welding the plate, the welding position can be guided and fixed by two corresponding adjusting straight edges, and the plate connection hole can be welded smoothly to achieve a fixing function. In addition, the assembly abuts against the threaded cylindrical part without squeezing the plate. This butterfly welding nut with a countersunk hole is suitable for both manual assembly and automated assembly.

[0013] Due to the adoption of the above technical solutions, this utility model has the following advantages and effects:

[0014] First, during installation, this application directly forms a flange with a straight edge and double-sided positioning. The force of the double-sided positioning assembly is directly applied to the threaded cylindrical part without turning.

[0015] Secondly, after the cylindrical internal thread welded plates are connected, they can be connected to plate parts and then to other components through the internal thread. When assembling the double straight edge of the flange, the direction can be used both left and right, reducing the difficulty of assembly positioning and identification. The upper end face of the butterfly flange has a countersunk hole, which can be used to provide space for material flow after the welding point is hot melted.

[0016] Third, this application applies to both manual assembly and automated assembly.

[0017] Of course, any specific embodiment of the present invention may not necessarily have all of the above technical effects at the same time. Attached Figure Description

[0018] Figure 1 This is a partial cross-sectional view of the nut in this application;

[0019] Figure 2 for Figure 1 A left-view diagram;

[0020] Figure 3 for Figure 2 A schematic diagram of the AA section. Detailed Implementation

[0021] The present invention will be described in detail below with reference to the accompanying drawings;

[0022] Please refer to Figure 1 , Figure 2 and Figure 3 This application includes partial sectional views, a left view, and an AA sectional view of the nut. The nut of this application is a welded nut with a wing flange that has a connecting function. When connecting assemblies, it directly forms a double-sided positioning without rotation, avoiding problems such as rotation, incomplete welding, and damage to the plate during the assembly process. When welding the plate with the non-circular symmetrical wing flange of this application, the welding position can be guided and fixed by two corresponding adjusting straight edges, and the plate connecting hole can be welded smoothly to achieve a fixing function. In addition, the assembly abuts against the threaded cylindrical part without squeezing the plate. This wing welded nut with countersunk hole is suitable for both manual assembly and automated assembly.

[0023] like Figure 1 and Figure 2 As shown, this application discloses a wing-shaped welding nut with countersunk holes for fixing automotive sheet metal. The nut includes a threaded cylindrical portion 11 with internal threads 111, a wing-shaped flange portion 12 with non-circular symmetry, a plurality of countersunk holes 13 evenly arranged on the upper surface of the wing-shaped flange portion 12, and a plurality of circular weld points 14 evenly arranged on the lower surface of the wing-shaped flange portion 12. The wing-shaped flange portion 12 is located between the countersunk holes 13 and the circular weld points 14 for an arc transition. The circular weld points 14 are used for welding and melting when connecting sheet metal. The threaded cylindrical portion 11 is used for connecting assembly parts. One end of the threaded cylindrical portion 11 is connected to the wing-shaped flange portion 12. The threaded cylindrical portion 11 and the wing-shaped flange portion 12 are concentric. The two parallel flange edges 121 of the wing-shaped flange portion 12 are used for positioning. During installation, the wing-shaped flange portion 12 is directly positioned on both sides. The force of the assembly parts is directly applied to the threaded cylindrical portion 11 without rotation. The diameter of the circular weld points 14 is larger than the diameter of the countersunk holes 13.

[0024] Please refer to Figure 2In this embodiment, the butterfly flange 12 is an arc-shaped square plate including two corresponding arcs and two corresponding flange edges 121. The corresponding flange edges 121 can be used to adjust and fix the welding position of the plate. That is, the butterfly flange 12 is a flange plane with two parallel cuts at equidistant positions at the center, connected by two straight lines and two arcs. In terms of processing technology, the butterfly flange 12 is formed by one-time cold extrusion. The layout of tooling and equipment ensures the consistency of the welding position of the product. The circular design of the butterfly flange 12 is conducive to inserting the plate connection hole for countersunk welding, and the appearance is beautiful. The straight flange edges 121 are used to fix the welding position. The method is to insert the flange edges 121 into the anti-rotation tooling during the welding process to achieve an auxiliary role in preventing rotation. Alternatively, the welding position of the circular weld point 14 can be adjusted by adjusting the width of the adjusting flange 12, so as to achieve product diversity.

[0025] Please refer to Figure 3 for Figure 2 The AA cross-sectional view shows that the countersunk hole 13 is a frustum-shaped groove. The so-called frustum shape refers to the fact that a cone is a geometric body composed of a circular base and a vertex. When the cone angle (i.e. the vertex) is removed, the remaining part is a geometric body composed of two parallel circular surfaces, which is called a frustum. The countersunk hole 13 in this application is a frustum-shaped groove formed by removing a frustum from the solid. The countersunk hole 13 is the space for the reverse flow of the weld point after it melts during welding in the butterfly flange part 12.

[0026] like Figure 2 As shown in the embodiment of this application, the number of countersunk holes 13 is four; the number of circular weld points 14 is four, and the four countersunk holes 13 are set corresponding to the four circular weld points 14. The countersunk holes 13 and the circular weld points 14 are concentric. In addition, the center of the threaded cylindrical part 11 and the center of the butterfly flange part 12 are concentric. With this design, after the butterfly flange part 12 is effectively welded, the angular position of the threaded cylindrical part 11 can be clearly known, which is convenient for connection with the assembly. Conversely, after the butterfly flange part 12 is positioned, the position and direction of the four countersunk holes 13 and the four circular weld points 14 can also be known, which is convenient for the four circular weld points 14 to be connected with the assembly to complete the welding function.

[0027] like Figure 3 As shown, the cross-section of the circular weld point 14 is arc-shaped, and the diameter of the circular weld point 14 facing the countersunk hole 13 is larger than the diameter of the countersunk hole 13. When the nut is screwed into place on the internal thread 111, the connecting assembly abuts against the threaded cylindrical part 11 without squeezing the plate. After the four circular weld points 14 are effectively welded, the angle position of the internal thread 111 can be clearly known, which facilitates the connection with the assembly.

[0028] In this embodiment, the threaded cylindrical part 11, the butterfly flange part 12, the countersunk hole 13, and the circular weld point 14 are integrally formed, resulting in a product with a complete structure, without any welded or spliced ​​parts, and with high strength and stability. The internal thread 111 of the threaded cylindrical part 11 is a standard thread, and the welded plate can continue to be threaded to other components through the internal thread 111.

[0029] It should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

[0030] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0031] Due to the adoption of the above technical solutions, this utility model has the following advantages and effects:

[0032] First, during installation, this application directly forms a flange with a straight edge and double-sided positioning. The force of the double-sided positioning assembly is directly applied to the threaded cylindrical part without turning.

[0033] Secondly, after the cylindrical internal thread welded plates are connected, they can be connected to plate parts and then to other components through the internal thread. When assembling the double straight edge of the flange, the direction can be used both left and right, reducing the difficulty of assembly positioning and identification. The upper end face of the butterfly flange has a countersunk hole, which can be used to provide space for material flow after the welding point is hot melted.

[0034] Third, this application applies to both manual assembly and automated assembly.

[0035] The above-disclosed embodiments are only a few specific examples of this utility model, but this utility model is not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. A butterfly soldering nut with counterbore for fixing automobile panel, characterized in that, The nut comprises a threaded cylindrical part with internal thread, a butterfly flange part with non-circular symmetry, a plurality of counterbores uniformly arranged on the upper surface of the butterfly flange part, and a plurality of round weld points uniformly arranged on the lower surface of the butterfly flange part for welding dissolution, the threaded cylindrical part being used for connecting fittings; one end of the threaded cylindrical part is connected with the butterfly flange part, and the threaded cylindrical part and the butterfly flange part are concentric; the two flange edges of the butterfly flange part are parallel and used for positioning; the diameter of the round weld points is greater than the diameter of the counterbores.

2. The countersunk butterfly weld nut of claim 1 wherein, The counterbores are circular truncated cone grooves.

3. The countersunk butterfly weld nut of claim 2 wherein, The number of the counterbores is four; the number of the round weld points is four, the counterbores are arranged corresponding to the round weld points, and the counterbores and the round weld points are concentric.

4. The countersunk butterfly weld nut of claim 3 wherein, The threaded cylindrical part, the butterfly flange part, the counterbores, and the round weld points are integrally formed.

5. The countersunk butterfly weld nut of claim 4 wherein, The internal thread of the threaded cylindrical part is a standard thread.

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