Pressing rivet bolt for automobile metal plate

Abstract

The utility model discloses a pressure riveting bolt for an automobile metal plate, which comprises a cake-shaped head part and a rod part, a threaded section is arranged on the rod part, a plurality of pressure riveting bumps are arranged on the side surface of the head part connected with the rod part, the plurality of pressure riveting bumps are distributed along the circumferential direction of the rod part, one end of each pressure riveting bump is connected with the rod part, and the other end of each pressure riveting bump is connected with the rod part. A riveting ring groove is formed in the end, close to the head, of the rod part, the side wall, facing the head, of the riveting ring groove is flush with the top face of the pressing rivet protruding block, a transition section is arranged between the riveting ring groove and the threaded section, and the diameter of the transition section is larger than the thread outer diameter of the threaded section. And looseness is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the fastener technical field, more specifically relates to a kind of press riveting bolt for automobile sheet metal. BACKGROUND

[0002] The connection between the automobile sheet metal parts usually uses welding or rivets a bolt or nut on one of the sheet metal parts, and connects the other sheet metal part through the nut or bolt.

[0003] However, the riveting strength of the common riveting bolt is poor, although it meets the requirements during riveting, but it is more likely to loosen during subsequent vehicle driving, causing the connection between the sheet metal parts to loosen. SUMMARY

[0004] To overcome the deficiencies of the prior art, the utility model provides a press riveting bolt for automobile sheet metal, which has high riveting strength between the sheet metal parts.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a press riveting bolt for automobile sheet metal, comprising a head and a shank, the shank is provided with a threaded segment, the side surface of the head connected to the shank is provided with a plurality of press riveting protrusions, the plurality of press riveting protrusions are distributed circumferentially along the shank, and one end of the press riveting protrusion is connected to the shank, the end of the shank close to the head is provided with a riveting ring groove, and the side wall of the riveting ring groove facing the head is flush with the top surface of the press riveting protrusion, a transition segment is provided between the riveting ring groove and the threaded segment, and the diameter of the transition segment is greater than the external diameter of the threaded segment.

[0006] Further, the end of the press riveting protrusion away from the side surface of the head is an inclined surface, and the inclined direction is away from the shank.

[0007] Further, the thickness of the press riveting protrusion is less than the width of the riveting ring groove.

[0008] Further, the diameter of the riveting ring groove is between the external diameter and the internal diameter of the threaded segment.

[0009] Further, the sum of the thickness of the press riveting protrusion, the width of the riveting ring groove, and the width of the transition segment is less than the thickness of the head.

[0010] Further, the maximum circular diameter formed by the ends of the plurality of press riveting protrusions is 0.8-0.9 times the diameter of the head.

[0011] Further, the width of the press riveting protrusion is 0.1-0.2 times the diameter of the head.

[0012] Compared with the prior art, the riveting is carried out by drilling a hole on the sheet metal part, inserting the rod part through the hole on the sheet metal part, using a rivet pressing tool to press the rivet pressing block after the rivet pressing block contacts the surface of the sheet metal part, and making the rivet pressing block press into the sheet metal part and the inner wall of the end of the hole close to the rivet pressing block deform and extend into the rivet ring groove to form a convex ring matched with the rivet ring groove, so that the riveting strength between the bolt and the sheet metal part is improved, and loosening is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the rivet bolt for automobile sheet metal of the utility model;

[0014] Figure 2 It is a structural schematic view of the rivet bolt for automobile sheet metal of the utility model; Figure 1 It is an enlarged view of A part in the middle;

[0015] Figure 3 It is a structural schematic view of the rivet bolt for automobile sheet metal of the utility model; Figure 1 It is a structural schematic view of the rivet bolt for automobile sheet metal of the utility model;

[0016] Figure 4 It is a riveting schematic view of the rivet bolt for automobile sheet metal of the utility model.

[0017] Reference signs: head part 1, rod part 2, threaded segment 3, rivet pressing block 4, rivet ring groove 5, transition segment 6, inclined surface 7, sheet metal part 8. DETAILED DESCRIPTION

[0018] In the description of the utility model, it should be explained that, for the orientation words, such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the utility model.

[0019] In addition, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first", "second" features can be explicitly or implicitly included one or more features, and the meaning of "several", "several" in the description of the utility model is two or more than two, unless otherwise explicitly specified.

[0020] Reference Figures 1 to 4 Further description of the utility model.

[0021] The utility model provides a kind of press riveting bolt for automobile sheet metal, including round cake head 1 and stem 2, the stem 2 is provided with threaded section 3, the side of head 1 connecting stem 2 is provided with several press riveting bosses 4, several press riveting bosses 4 are distributed along the circumference of stem 2, and the end of press riveting boss 4 is connected with stem 2, the end of stem 2 close to head 1 is provided with riveting ring groove 5, and the side wall of riveting ring groove 5 towards head 1 is flush with the top surface of press riveting boss 4, transition section 6 is provided between riveting ring groove 5 and threaded section 3, and the diameter of transition section 6 is greater than the thread outer diameter of threaded section 3.

[0022] As Figures 1 to 4 shown, when riveting, hole is drilled on sheet metal part 8, hole diameter is equal to the diameter of transition section 6 on stem 2, then stem 2 is passed through the hole on sheet metal part 8, and press riveting boss 4 contacts the surface of sheet metal part 8, press riveting is carried out using press riveting tool, press riveting boss 4 is pressed into sheet metal part 8, sheet metal part 8 and the surface of press riveting boss 4 are deformed, and the inner wall of the end of hole close to press riveting boss 4 is deformed and extends into riveting ring groove 5, thereby forming convex ring matched with riveting ring groove 5, not only two sheet metal parts 8 are connected by press riveting boss 4, but also riveting ring groove 5 and convex ring are matched to improve the riveting strength between bolt and sheet metal part 8, and looseness is avoided.

[0023] As Figure 3 shown, preferably in the present example, the number of press riveting boss 4 is 6.

[0024] As Figure 2 shown, preferably in the present example, the end of press riveting boss 4 away from the side of head 1 is inclined surface 7, and the inclined direction is away from stem 2, so that when press riveting boss 4 contacts the surface of sheet metal part 8, gap is formed between inclined surface 7 and the surface of sheet metal part 8, the contact area between press riveting boss 4 and sheet metal part 8 is reduced, riveting is easier, the deformation amount of the surface of sheet metal part 8 away from riveting convex ring is reduced, and the surface of head 1 and sheet metal part 8 can be closely attached after riveting.

[0025] As Figure 2 shown, preferably in the present example, the thickness of press riveting boss 4 is less than the width of riveting ring groove 5.

[0026] Preferably in the present example, the diameter of riveting ring groove 5 is between the thread outer diameter and the thread inner diameter of threaded section 3.

[0027] Preferably in the present example, the sum of the thickness of press riveting boss 4, the width of riveting ring groove 5 and the width of transition section 6 is less than the thickness of head 1.

[0028] Preferably in the present example, the maximum circle diameter formed by the end of several press riveting bosses 4 is 0.8-0.9 times the diameter of head 1.

[0029] Preferably in this example, the width of the press-in stud 4 is 0.1-0.2 times the diameter of the head 1.

[0030] The preferred embodiments of the present application have been described above with the preferred embodiments, the protection scope of the present application is not only limited to the above-mentioned embodiments, and any technical solutions belonging to the idea of the present application shall belong to the protection scope of the present application. It should be noted that for ordinary skilled persons in the art, some improvements and decorations without departing from the principles of the present application shall be considered as the protection scope of the present application.

Claims

1. A press-fit bolt for automotive sheet metal, characterized in that: The device includes a disc-shaped head and a rod. The rod has a threaded section. The head has several rivet protrusions on its side, which is connected to the rod. These rivet protrusions are distributed circumferentially along the rod, and one end of each rivet protrusion is connected to the rod. The rod has a rivet ring groove near the head, and the sidewall of the rivet ring groove facing the head is flush with the top surface of the rivet protrusion. A transition section is provided between the rivet ring groove and the threaded section, and the diameter of the transition section is larger than the outer diameter of the threaded section.

2. The press-fit bolt for automotive sheet metal as described in claim 1, characterized in that: The end of the rivet protrusion is inclined on the side away from the head, and the inclination direction is away from the rod.

3. The press-fit bolt for automotive sheet metal as described in claim 1, characterized in that: The thickness of the rivet protrusion is less than the width of the rivet ring groove.

4. The press-fit bolt for automotive sheet metal as described in claim 1, characterized in that: The diameter of the rivet ring groove is located between the outer diameter and the inner diameter of the thread section.

5. The press-fit bolt for automotive sheet metal as described in claim 1, characterized in that: The sum of the thickness of the riveting protrusion, the width of the riveting ring groove, and the width of the transition section is less than the thickness of the head.

6. The press-fit bolt for automotive sheet metal as described in claim 1, characterized in that: The maximum diameter of the circle formed at the ends of the plurality of rivet protrusions is 0.8-0.9 times the diameter of the head.

7. The press-fit bolt for automotive sheet metal as described in claim 1, characterized in that: The width of the rivet protrusion is 0.1-0.2 times the diameter of the head.

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