Aluminum alloy pull rivet type bond bolt structure and automobile

Abstract

The utility model relates to the technical field of automobiles, and relates to a mounting and connecting structure of an automobile body part, in particular to an aluminum alloy pull riveting type ground bolt structure and an automobile, and the aluminum alloy pull riveting type ground bolt structure comprises a bolt, a sleeve and a nut. The bolt comprises a bolt flange, a via hole section and a screw rod section which are sequentially, integrally and fixedly connected, and a limiting protrusion is arranged on the periphery of the via hole section. A sleeve flange is arranged on the periphery of one end of the sleeve, a matched protruding section is arranged on the sleeve, and the radial section of the matched protruding section is polygonal. The screw rod section of the bolt penetrates through the sleeve to be in threaded connection with the nut, and the limiting protrusion is inserted into the sleeve collapsing section and connected with the inner wall of the sleeve collapsing section in an interference fit mode. The ground bolt has the beneficial effects that the assembly is simple, the ground bolt can be fixedly assembled by only one hand riveter, and the replacement is more convenient; the structure is simple, cost is low, the quality problem that a projection welding type bond bolt is prone to falling off is solved, connection reliability and stability are improved, and customer satisfaction is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to an installation and connection structure of vehicle body parts, and more specifically to an aluminum alloy rivet-type grounding bolt structure and an automobile. Background Art

[0002] With the continuous development of the automotive industry, especially electric vehicles, projection welded ground bolts, as a crucial component of automotive circuits, are gaining increasing attention for their development and application. The optimization and application of projection welded ground bolts are directly related to vehicle safety and circuit stability. In the context of lightweighting and the use of high-strength materials in automobiles, the technology and materials used for projection welded ground bolts are constantly evolving to meet the automotive industry's higher demands for safety and reliability.

[0003] Lightweight materials such as aluminum profiles, sheets, and aluminum castings are increasingly being used in body-in-white (BIW) construction. However, the projection-welded grounding bolts used in traditional steel bodies cannot be used on all-aluminum vehicles due to the material difference. While foreign aluminum projection-welded bolts can achieve grounding, they are expensive, prone to falling off, require specialized equipment for welding, and are difficult to repair. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an aluminum alloy pull-rivet type grounding bolt structure and a car, so as to solve the above-mentioned problems existing in the prior art.

[0005] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: an aluminum alloy rivet-type grounding bolt structure, comprising a bolt, a sleeve and a nut; the bolt comprises a bolt flange, a through-hole section and a screw section which are integrally fixed in sequence, and a limiting protrusion is provided on the outer periphery of the through-hole section; a sleeve flange is provided on the outer periphery of one end of the sleeve, and a matching protrusion section is provided on the sleeve for inserting into the connecting hole on the to-be-connected part, and the radial cross-section of the matching protrusion section is a polygon; one side surface of the matching protrusion section is connected to the side edge of the sleeve flange, and the sleeve located on the other side of the matching protrusion section is a sleeve collapse section, and the screw section of the bolt is threadedly connected to the nut after passing through the sleeve, and the limiting protrusion is inserted in the sleeve collapse section and is interference fit connected to the inner wall of the sleeve collapse section.

[0006] The beneficial effects of the utility model are: the utility model is easy to assemble, and only a rivet gun is needed to achieve the fixed assembly of the grounding bolt, and replacement is also more convenient; the cost is low, and the quality problems of the projection welding grounding bolt that are easy to fall off are solved, thereby improving the reliability and stability of the connection and improving customer satisfaction.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the limiting protrusion is a tooth-shaped annular protrusion.

[0009] The beneficial effect of adopting the above further solution is that the limiting protrusion adopts a toothed annular protrusion, which ensures uniform abutment between the limiting protrusion and the inner wall of the sleeve collapse section, thereby ensuring the stability of the interference fit between the two.

[0010] Furthermore, the number of the tooth-shaped annular protrusions is two, and the two tooth-shaped annular protrusions are spaced apart along the length direction of the through-hole segment.

[0011] The beneficial effect of adopting the above further solution is: providing two tooth-shaped annular protrusions arranged at intervals can increase the fitting length, play a guiding role, and prevent the bolt and sleeve from being out of alignment and deflecting due to a short fitting length.

[0012] Furthermore, the radial cross-section of the sleeve flange is polygonal.

[0013] The beneficial effect of adopting the above further solution is that the sleeve flange adopts a polygonal structure, which facilitates the limiting of the wiring harness terminal during the assembly process.

[0014] Furthermore, the nut is a cap nut.

[0015] The beneficial effect of adopting the above further solution is that the nut adopts a cap-type nut, which can prevent the electrophoretic liquid from entering the sleeve from the screw section during the coating process, thereby ensuring the conductive performance of the part.

[0016] Furthermore, a polygonal segment is provided on the outer wall of the cap nut.

[0017] The beneficial effect of adopting the above further solution is that a polygonal segment is provided on the outer wall of the cap nut to facilitate disassembly and assembly of tools.

[0018] Furthermore, a nut flange is provided on the peripheral wall of one end of the cap nut close to the sleeve flange, and the nut flange and the sleeve flange are sealed and abutted against each other on the sides facing each other.

[0019] The beneficial effect of adopting the above-mentioned further scheme is that the setting of the nut flange can increase the contact area with the sleeve flange. When the wiring harness grounding terminal is not set between the nut flange and the sleeve flange, the sealing area between the nut flange and the sleeve flange is increased, thereby improving the sealing effect and preventing the electrophoretic fluid in the coating process from entering between the nut flange and the sleeve flange and affecting the conductive performance of the parts.

[0020] Furthermore, a nut flange is provided on the peripheral wall of one end of the cap nut close to the sleeve flange, and the sides of the nut flange and the sleeve flange facing each other clamp the wiring harness grounding terminal.

[0021] Furthermore, the bolt, the sleeve and the nut are all made of aluminum alloy.

[0022] The beneficial effect of adopting the above further solution is that the bolts, sleeves, nuts and sleeve flanges are all made of aluminum alloy. When the device is installed on the all-aluminum white body, the electrochemical corrosion problem caused by the potential difference due to different materials is effectively avoided.

[0023] The utility model solves the above problem and further provides a car, comprising the above-mentioned aluminum alloy rivet type grounding bolt structure.

[0024] The beneficial effects of adopting the above scheme are: the above-mentioned aluminum alloy rivet-type grounding bolt structure is simple to assemble, and only a rivet gun is required to achieve the fixed assembly of the rivet bolt, and replacement is also more convenient; the cost is low, and quality problems such as the easy falling off of the convex welding grounding bolt are solved, thereby improving the reliability and stability of the connection and reducing customer complaints. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the utility model;

[0026] Figure 2 It is an exploded view of the utility model;

[0027] Figure 3 It is a cross-sectional view of the utility model;

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] 1. Bolt; 1-1. Bolt flange; 1-2. Toothed annular protrusion; 1-3. Screw segment; 2. Sleeve; 2-1. Sleeve flange; 2-2. Matching protrusion segment; 2-3. Sleeve collapse segment; 3. Nut; 3-1. Polygonal segment; 3-2. Nut flange. DETAILED DESCRIPTION

[0030] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0031] Example 1

[0032] like Figure 1 、 Figure 2 、 Figure 3As shown, this embodiment discloses an aluminum alloy rivet-type grounding bolt structure, including a bolt 1, a sleeve 2 and a nut 3, wherein the bolt 1, the sleeve 2 and the nut 3 and the components installed on the sleeve 2 and the nut 3 are all made of aluminum alloy; the bolt 1 includes a bolt flange 1-1, a through-hole section and a screw section 1-3 which are integrally fixedly connected in sequence, the diameter of the bolt flange 1-1 is larger than the diameter of the through-hole section, the diameter of the through-hole section is larger than the diameter of the screw section 1-3, and a limiting protrusion is provided on the outer periphery of the through-hole section.

[0033] A sleeve flange 2-1 is provided on the outer periphery of one end of the sleeve 2, and a matching protrusion section 2-2 is provided on the sleeve 2 for inserting into the connection hole on the part to be connected (the body part). The radial cross section of the matching protrusion section 2-2 (the radial cross section refers to the cross section in the radial direction of the sleeve 2) is polygonal, which can effectively solve the problem of the bolt 1 rotating due to insufficient riveting force generated by traditional circular matching. The outer periphery of the sleeve flange 2-1 is arranged on the outside of the matching protrusion section 2-2; the matching protrusion section 2- One side of the sleeve 2 is connected to the side of the sleeve flange 2-1, and the sleeve 2 located on the other side of the mating protrusion section 2-2 is the sleeve collapse section 2-3. The sleeve flange 2-1, the mating protrusion section 2-2 and the sleeve collapse section 2-3 are an integrated fixed connection structure. The screw section 1-3 of the bolt 1 passes through the sleeve 2 and is threadedly connected to the nut 3. The limiting protrusion is inserted in the sleeve collapse section 2-3 and is interference fit with the inner wall of the sleeve collapse section 2-3.

[0034] During use, the wiring harness grounding terminal can be fitted and connected to the side of the sleeve flange 2-1 facing the nut 3. When the wiring harness grounding terminal is set between the sleeve flange 2-1 and the nut 3, the wiring harness grounding terminal is clamped and fixed by the sleeve flange 2-1 and the nut 3.

[0035] In this embodiment, the limiting protrusion is preferably a toothed annular protrusion 1-2, which ensures uniform abutment between the limiting protrusion and the inner wall of the sleeve collapse section 2-3, thereby ensuring the stability of the interference fit between the two.

[0036] In this embodiment, it is further preferred that the number of the toothed annular protrusions 1-2 is two, and the two toothed annular protrusions 1-2 are spaced apart along the length direction of the through-hole section. The two spaced-apart toothed annular protrusions 1-2 can increase the fitting length and play a guiding role, thereby preventing the bolt and the sleeve from being out of alignment and skewing due to the short fitting length.

[0037] In this embodiment, the radial cross-section of the sleeve flange 2-1 (this radial cross-section refers to the cross-section of the sleeve 2 in the radial direction) is polygonal. This polygonal structure prevents the mating wiring harness ground terminal from rotating during assembly, thereby facilitating assembly. The side of the sleeve flange 2-1 facing away from the nut 3 is flat, eliminating the need for steel end face ribs and simplifying the process.

[0038] In this embodiment, the nut 3 is a cap nut, one end of which is closed, and the other end is provided with a threaded blind hole that matches the screw segment 1-3. This prevents electrophoretic fluid from entering the sleeve 2 through the screw segment 1-3 during the coating process, thereby ensuring the electrical conductivity of the part. The outer wall of the cap nut is provided with a polygonal segment 3-1. Specifically, the polygonal segment 3-1 is located at the end of the nut 3 away from the sleeve flange 2-1. The polygonal segment 3-1 is preferably hexagonal in structure, which reduces weight and facilitates tool disassembly.

[0039] In this embodiment, a nut flange 3-2 is provided on the peripheral wall of the cap nut near one end of the sleeve flange 2-1. During assembly, the mating protrusion 2-2 of the sleeve 2 is first installed in the connection hole on the body part. Then, the sleeve collapse section 2-3 is riveted to form a raised structure that clamps the body part, thereby securing the sleeve 2 to the body part. Electrophoresis coating is then performed. The nut 3 is then unscrewed, and the ground terminal is mounted on the screw section 1-3. The nut 3 is then screwed on, so that the nut flange 3-2 and the facing side of the sleeve flange 2-1 clamp the ground terminal. The nut flange 3-2 and the facing side of the sleeve flange 2-1 are in sealing contact. The provision of the nut flange 3-2 increases the contact area with the sleeve flange 2-1, thereby improving the sealing effect and preventing electrophoretic fluid from entering between the nut flange 3-2 and the sleeve flange 2-1 during the coating process and affecting the conductive performance of the part.

[0040] Example 2

[0041] This embodiment discloses an automobile, including the aluminum alloy rivet-type grounding bolt structure described above.

[0042] The pull-rivet grounding bolt 1 of the utility model can be applied to an all-aluminum body-in-white, and at the same time solves the problems of the foreign projection-welded grounding bolt 1 being expensive, requiring special welding equipment and being easy to fall off; the pull-rivet grounding bolt 1 has a low cost, and the pull-rivet connection method can completely avoid the problem of the projection-welded bolt 1 falling off; the connection equipment is a conventional pull-rivet gun, which is simple and convenient to operate.

[0043] In the description of the present invention, it should be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In the description of the present invention, “a plurality of” means at least two, such as two, three, etc., unless otherwise clearly defined.

[0045] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An aluminum alloy rivet type grounding bolt structure, characterized in that: The invention comprises a bolt (1), a sleeve (2) and a nut (3); the bolt (1) comprises a bolt flange (1-1), a through-hole section and a screw section (1-3) which are integrally fixedly connected in sequence, and a limiting protrusion is provided on the outer periphery of the through-hole section; a sleeve flange (2-1) is provided on the outer periphery of one end of the sleeve (2), and a matching protrusion section (2-2) for inserting into a connection hole on a to-be-connected part is provided on the sleeve (2), and the radial cross section of the matching protrusion section (2-2) is a polygon. shape; one side of the mating protrusion section (2-2) is connected to the side of the sleeve flange (2-1); the sleeve (2) located on the other side of the mating protrusion section (2-2) is a sleeve collapse section (2-3); the screw section (1-3) of the bolt (1) passes through the sleeve (2) and is threadedly connected to the nut (3); the limiting protrusion is inserted into the sleeve collapse section (2-3) and is interference-fitted with the inner wall of the sleeve collapse section (2-3).

2. The aluminum alloy rivet type grounding bolt structure according to claim 1, characterized in that: The limiting protrusion is a tooth-shaped annular protrusion (1-2).

3. The aluminum alloy rivet type ground bolt structure according to claim 2, characterized in that: The number of the tooth-shaped annular protrusions (1-2) is two, and the two tooth-shaped annular protrusions (1-2) are arranged at intervals along the length direction of the through-hole section.

4. The aluminum alloy rivet type grounding bolt structure according to claim 1, characterized in that: The radial cross section of the sleeve flange (2-1) is polygonal.

5. The aluminum alloy rivet type grounding bolt structure according to claim 1, characterized in that: The nut (3) is a cap-type nut (3).

6. The aluminum alloy rivet type grounding bolt structure according to claim 5, characterized in that: A polygonal section (3-1) is provided on the outer wall of the cap nut (3).

7. The aluminum alloy rivet type grounding bolt structure according to claim 5, characterized in that: A nut flange (3-2) is provided on the peripheral wall of one end of the cap nut (3) close to the sleeve flange (2-1), and the nut flange (3-2) and the sleeve flange (2-1) are in sealing contact with each other on their facing sides.

8. The aluminum alloy rivet type grounding bolt structure according to claim 5, characterized in that: A nut flange (3-2) is provided on the peripheral wall of one end of the cap nut (3) close to the sleeve flange (2-1), and the nut flange (3-2) and the sleeve flange (2-1) face each other to clamp the wiring harness grounding terminal.

9. The aluminum alloy rivet-type ground bolt structure according to any one of claims 1 to 8, characterized in that: The bolt (1), the sleeve (2) and the nut (3) are all made of aluminum alloy.

10. An automobile, characterized in that: The invention comprises the aluminum alloy rivet-type grounding bolt structure as described in any one of claims 1 to 9.

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