Improved electrically conductive bolt for automobiles

Abstract

An improved conductive bolt for an automobile, comprising a bolt shank, one end of the bolt shank is provided with a bolt head, the bolt shank is provided with a threaded section, and a section of the threaded section is a indentation section; the thread on the threaded section is a polygonal rotary thread; and the cross section of the thread in the indentation section is a trapezoidal shape. The conductive bolt for the automobile in the application adopts the threaded section with the indentation section and the polygonal rotary thread structure, and the combination of the two increases the contact area of the bolt thread and the nut thread when being tightened, can effectively remove the electrophoretic paint in the nut thread, and improves the conductive capacity.

Description

Technical Field

[0001] This utility model belongs to the field of special bolt technology, specifically relating to an improved conductive bolt for automobiles. Background Technology

[0002] Bolts are a widely used type of hardware structural component in various industries. They are used in conjunction with nuts or threaded holes to provide a good fastening effect. Over time, bolt fasteners have evolved to include a variety of structures and functions to adapt to different application scenarios.

[0003] Conductive bolts used in automobiles are a type of bolt, belonging to the category of special bolts. In existing technology, conductive bolts only have indentations, which contact the internal threads when tightened. However, the contact area between the bolt threads and the nut threads is too small, which cannot effectively remove the electrophoretic paint from the nut's internal threads, affecting the bolt's conductivity and easily reducing its conductivity, thus impacting the overall conductivity.

[0004] Therefore, based on some shortcomings in the existing technology, this application further designs and improves the improved conductive bolt for automobiles. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model provides an improved conductive bolt for automobiles. By modifying its threaded column structure, the contact area between the bolt thread and the nut thread is increased during tightening, which can better and more effectively remove the electrophoretic paint from the inner thread of the nut, thus avoiding a decrease in conductivity.

[0006] The present invention is solved by the following technical solution.

[0007] An improved conductive bolt for automobiles includes a bolt shank, one end of which is provided with a bolt head, and a threaded section on the bolt shank, a portion of which is an indentation section; the thread on the threaded section is a polygonal rotary thread; and the cross-section of the thread in the indentation section is trapezoidal.

[0008] The conductive bolt for automobiles in this application uses an indentation section and a thread section with a polygonal rotating thread structure. The combination of the two increases the contact area between the bolt thread and the nut thread when tightening, which can better and more effectively remove the electrophoretic paint from the inner thread of the nut.

[0009] In a preferred embodiment, the thread on the threaded segment is a pentagonal rotary thread or a hexagonal rotary thread, which is easy to process and manufacture.

[0010] In a preferred embodiment, the indentation segment is formed by pressing two opposing surfaces, which is convenient to process.

[0011] In a preferred embodiment, the length of the threaded section is 'a', and the length of the indented section is 'b', where a:b = 6~6.7. This structure is rationally designed, enabling more effective removal of electrophoretic paint while maintaining conductivity, and also providing excellent fastening force after assembly.

[0012] In a preferred embodiment, the bolt head is provided with a flange, and the bolt shank is provided with a head-shank joint at the position where it connects to the bolt head.

[0013] In a preferred embodiment, the insertion end of the bolt rod has a gradually narrowing guide section for easy insertion.

[0014] Compared with the prior art, the present invention has the following beneficial effects: it provides an improved conductive bolt for automobiles. By changing its threaded column structure, the contact area between the bolt thread and the nut thread is increased when tightening, which can better remove the electrophoretic paint in the inner thread of the nut and improve the conductivity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the conductive bolt in this utility model. Figure 1 .

[0016] Figure 2 This is a schematic diagram of the conductive bolt in this utility model. Figure 2 .

[0017] Figure 3 for Figure 1 A cross-sectional view along the AA direction.

[0018] Figure 4 This is a schematic diagram of the indentation section in the conductive bolt of this utility model.

[0019] Figure 5 This is a schematic diagram of a portion of the thread in the conductive bolt of this utility model. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] In the following embodiments, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this utility model, it should be understood that the terms such as center, longitudinal, transverse, length, width, thickness, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, and counterclockwise, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features shown. In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] See Figures 1 to 5 This application relates to an improved conductive bolt for automobiles, comprising a bolt shank 3, one end of which is provided with a bolt head 1, and a threaded section 32 on the bolt shank 3, a portion of which is an indentation section 33; the thread on the threaded section 32 is a polygonal rotary thread; a flange 2 is provided on the bolt head 1, and a head-shank joint 31 is provided at the connection position between the bolt shank 3 and the bolt head 1, resulting in a stable and compact structure.

[0024] Specifically, in this application, the thread on the threaded segment 32 is a pentagonal rotary thread or a hexagonal rotary thread, as shown in the attached figure. Figure 3 The shape shown is hexagonal, which is convenient for processing and manufacturing. Furthermore, in this application, the indentation segment 33 is formed by pressure applied to two opposing surfaces, which is also convenient for processing.

[0025] In addition, from the appendix Figure 2 As can be seen from the diagram, in this application, the length of the threaded section 32 is 'a', and the length of the indentation section 33 is 'b', where a:b = 6~6.7, and the indentation section 33 is close to the guide section 34. This structure is reasonably designed, enabling more effective removal of electrophoretic paint while maintaining conductivity, and also providing good fastening force after assembly. Furthermore, the insertion end of the bolt rod 3 has a gradually narrowing guide section 34, ensuring that the bolt is effectively guided into the internal threaded hole when screwed in.

[0026] from Figure 5 As can be seen, the conventional thread cross-section 321 on the threaded section 32 is triangular, while the indented thread cross-section 331 in the indented section 33 is trapezoidal, which is a structure formed by pressure.

[0027] As can be seen from the above description, the automotive conductive bolt in this application adopts an indentation section 33 and a thread section 32 with a polygonal rotating thread structure. The combination of the two increases the contact area between the bolt thread and the nut thread when tightening, which can better and more effectively remove the electrophoretic paint in the inner thread of the nut.

[0028] As described above, this utility model provides an improved conductive bolt. By changing its threaded column structure, the contact area between the bolt thread and the nut thread is increased during tightening, which can better remove the electrophoretic paint in the nut's internal thread and improve conductivity.

[0029] The scope of protection of this utility model includes, but is not limited to, the above embodiments. The scope of protection of this utility model is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art shall fall within the scope of protection of this utility model.

Claims

1. An improved conductive bolt for automobiles, comprising a bolt shank (3), one end of which is provided with a bolt head (1), characterized in that, The bolt rod (3) is provided with a threaded section (32), and a section of the threaded section (32) is an indentation section (33). The thread on the threaded section (32) is a polygonal rotary thread; The cross-section of the thread in the indentation section (33) is trapezoidal.

2. An improved conductive bolt for automobiles according to claim 1, characterized in that, The thread on the threaded section (32) is a pentagonal rotary thread or a hexagonal rotary thread.

3. An improved conductive bolt for automobiles according to claim 1, characterized in that, The indentation segment (33) is an indentation segment (33) formed by pressure on two opposing surfaces.

4. An improved conductive bolt for automobiles according to claim 3, characterized in that, The length of the threaded section (32) is a, and the length of the indentation section (33) is b, where a:b = 6~6.

7.

5. An improved conductive bolt for automobiles according to claim 1, characterized in that, The bolt head (1) is provided with a flange (2), and the bolt shank (3) is provided with a head-shank joint (31) at the position where it connects with the bolt head (1).

6. An improved conductive bolt for automobiles according to any one of claims 1 to 5, characterized in that, The insertion end of the bolt rod (3) has a gradually narrowing inlet section (34).

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