Aluminum alloy pull rivet type bond bolt structure and automobile

Abstract

The invention relates to the technical field of automobiles, in particular to an aluminum alloy pull riveting type ground bolt structure and an automobile, and relates to an installation connecting structure of an automobile body part, in particular to an aluminum alloy pull riveting type ground bolt structure and the automobile. 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 assembling is easy, fixing and assembling of the ground bolt can be achieved only through a hand riveter, and 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 present invention relates to the technical field of automobiles, and more particularly to an installation and connection structure of a vehicle body part, and more particularly to an aluminum alloy rivet-type grounding bolt structure and an automobile. Background Art

[0002] With the continuous development of the automobile industry, especially the development of electric vehicles, projection welding grounding bolts, as an important part of automobile circuits, are increasingly valued for their development and application. The optimization and application of projection welding grounding bolts are directly related to the safety performance of automobiles and the stability of circuits. In the context of the application of lightweight and high-strength materials in automobiles, the technology and materials of projection welding grounding bolts are also constantly improving to meet the higher requirements of the automobile industry for safety and reliability.

[0003] Lightweight materials such as aluminum profiles, plates and aluminum castings are increasingly used in body-in-white, while the projection welding grounding bolts used on traditional steel plate bodies cannot be used on all-aluminum bodies due to the different materials. Although foreign aluminum projection welding bolts can achieve the grounding function, they are expensive, easy to fall off, require special equipment for welding, and are difficult to repair. Summary of the invention

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

[0005] The technical solution of the present invention to solve 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 fixedly connected 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 a connecting hole on a part to be connected, 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 connected to the inner wall of the sleeve collapse section by interference fit.

[0006] The beneficial effects of the present invention are as follows: the present invention 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 quality problems such as the easy falling off of the convex welding grounding bolt are solved, the reliability and stability of the connection are improved, and customer satisfaction is improved.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the limiting protrusion is a toothed annular protrusion.

[0009] The beneficial effect of adopting the above further solution is that the limiting protrusion adopts a toothed annular protrusion, which ensures that the limiting protrusion and the inner wall of the sleeve collapse section are evenly abutted, 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 arranged at intervals along the length direction of the through-hole segment.

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

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

[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-type 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 sealingly fitted 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 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 liquid 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 scheme 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 caused by different materials is effectively avoided.

[0023] The present invention solves the above problem and further provides an automobile, comprising the above-mentioned aluminum alloy rivet type grounding bolt structure.

[0024] The beneficial effects of adopting the above scheme are: the above 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, the reliability and stability of the connection are improved, and customer complaints are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 An exploded view of the present invention;

[0027] Figure 3 is a cross-sectional view of the present invention;

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

[0029] 1. Bolt; 1-1. Bolt flange; 1-2. Toothed annular protrusion; 1-3. Screw section; 2. Sleeve; 2-1. Sleeve flange; 2-2. Matching protrusion section; 2-3. Sleeve collapse section; 3. Nut; 3-1. Polygonal section; 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] Embodiment 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 a connection hole on a part to be connected (a 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 a polygon, 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 outer side 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 matching protrusion section 2-2 is the sleeve collapse section 2-3. The sleeve flange 2-1, the matching 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 with 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 with 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 axial alignment and causing deflection due to the short fitting length.

[0037] In this embodiment, the radial cross section of the sleeve flange 2-1 (the radial cross section refers to the cross section of the sleeve 2 in the radial direction) is a polygon. The sleeve flange 2-1 adopts a polygonal structure to prevent the wiring harness grounding terminal matched therewith from rotating during the assembly process, thereby facilitating assembly. The side of the sleeve flange 2-1 away from the nut 3 is a plane, and the design of the steel end face rib is eliminated, 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 matching the screw segment 1-3, which can prevent the electrophoretic liquid from entering the sleeve 2 from the screw segment 1-3 during the coating process, thereby ensuring the conductive performance of the part. A polygonal segment 3-1 is provided on the outer wall of the cap nut. Specifically, the polygonal segment 3-1 is provided at one end of the nut 3 away from the sleeve flange 2-1. The polygonal segment 3-1 is provided on the outer wall of the cap nut, preferably in a hexagonal structure, which can reduce weight and facilitate 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 matching protrusion section 2-2 of the sleeve 2 is first installed in the connection hole on the body part, and then the sleeve collapse section 2-3 is formed into a protrusion structure for clamping the body part by riveting, so that the sleeve 2 is fixed on the body part, and then electrophoresis is used for coating, and then the nut 3 is unscrewed, and the grounding terminal is installed on the screw section 1-3, and then the nut 3 is screwed on, so that the nut flange 3-2 and the side of the sleeve flange 2-1 facing each other clamp the grounding terminal. The nut flange 3-2 and the side of the sleeve flange 2-1 facing each other are sealed and abutted. The setting of the nut flange 3-2 can increase the contact area with the sleeve flange 2-1, thereby improving the sealing effect and preventing the electrophoresis liquid from entering between the nut flange 3-2 and the sleeve flange 2-1 during the coating process to affect the conductive performance of the parts.

[0040] Embodiment 2

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

[0042] The pull-rivet type grounding bolt 1 of the present invention can be applied to an all-aluminum body-in-white, and at the same time solves the problems that the foreign projection welding type grounding bolt 1 is expensive, requires special welding equipment and is easy to fall off; the pull-rivet type grounding bolt 1 has a low cost, and the pull-rivet connection method can completely avoid the problem of the projection welding 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 is necessary to understand that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like indicate orientations or positional relationships 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 referred system or element 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, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to 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" etc. 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the 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 substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope 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 connecting 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 matching 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 matching 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 connected to the inner wall of the sleeve collapse section (2-3) by interference fit.

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

3. The aluminum alloy rivet type grounding bolt structure according to claim 2 is 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 the sides facing each other.

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 grounding 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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