CN220668097U - Expansion riveting nut applied to metal sheet - Google Patents

Abstract

The utility model relates to an expansion riveting nut applied to a metal sheet, and belongs to the technical field of nuts; the tubular expansion riveting structure is arranged above the nut body; when the tubular expansion riveting structure is pressed, the upper end of the tubular expansion riveting structure is expanded outwards in a drum shape, and is matched with the nut body to clamp a thin plate to be fastened; the upper surface of the top end of the nut body is uniformly provided with a plurality of flower tooth structures around the tubular expansion riveting structure, and the flower tooth structures are extruded into the sheet when the expansion riveting nut is pressed; the nut body is internally provided with an internal threaded hole, and the internal threads of the internal threaded hole are used for being in threaded connection with the opposite locking piece. The nut can be fixed on a plate with any plate thickness made of any material, and is rapid in riveting, reliable in connection, energy-saving and environment-friendly.

Description

Expansion riveting nut applied to metal sheet

Technical Field

The utility model relates to the technical field of nuts, in particular to an expanding rivet nut applied to a metal sheet.

Background

Nuts are the most widely used fasteners in various fields of civil use, commercial use, military use and the like, and particularly in large machines such as automobiles, aviation and the like. In the automobile industry, considering the requirements of the beat and the installation convenience in the automobile production process, if the opponent is a nut, and the bolt needs to be screwed down, a method of fixing the nut on a metal plate is generally adopted, and the nut cannot be rotated when the bolt is screwed down. To prevent the nut from turning, weld nuts and clinch nuts (see fig. 1 and 2) are typically used to secure the nut to the steel plate. However, the welded nut has a very obvious defect that the welded nut can only be applied to a steel plate, the welding process is not easy to control, a series of problems such as cold welding, welding slag splashing, welding penetration (such as too thin welded metal plate) and the like can occur in the welding process, the cold welding easily causes the loosening of the nut, the welding slag splashing causes the severe working environment, the safety threat is brought to workers, and the welding slag is easy to splash onto the threads of the welded nut, so that the installation and the use of the nut are affected. With the pursuit of high-quality and light-weight automobiles, more and more light-weight materials are produced in automobile production, such as aluminum alloy, magnesium alloy, carbon fiber plates and the like, but the inherent properties of the materials make the welding nuts no longer usable, and although the foreign research and development is carried out at present, as shown in fig. 2, the sun flower tooth riveting nut can be used for aluminum and magnesium aluminum alloy materials, but only used for sheet metal with the thickness of more than 1mm, and how to fix the nuts on sheet metal materials with the thickness of less than 1mm to complete normal fastening, the technical problem to be solved urgently is still needed.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides an expanding rivet nut applied to a metal sheet. The expansion riveting nut is a brand new tubular riveting structure, when being pressed, the upper end of the tube outwards forms drum-shaped expansion at the position of the thin plate to be fastened, and the thin plate is tightly clamped, so that the expansion riveting nut can be used for installing the thin plate nut with the thickness of less than 1 mm.

In order to achieve the above purpose, the specific technical scheme of the utility model is as follows:

the expansion riveting nut comprises a tubular expansion riveting structure and a nut body; the tubular expansion riveting structure is arranged above the nut body; when the tubular expansion riveting structure is pressed, the upper end of the tubular expansion riveting structure is expanded outwards in a drum shape, and is matched with the nut body to clamp a thin plate to be fastened; the upper surface of the top end of the nut body is uniformly provided with a plurality of flower tooth structures around the tubular expansion riveting structure, and the flower tooth structures are extruded into the sheet when the expansion riveting nut is pressed; the nut body is internally provided with an internal threaded hole, and the internal threads of the internal threaded hole are used for being in threaded connection with the opposite locking piece.

Further, the circumferential array centers of the plurality of spline structures are the top centers of the nut body.

Further, a plurality of the spline structures are arranged at intervals, the intervals are guide grooves, and the guide grooves are used for placing deformed parts of the thin plates.

Further, the flower tooth structure is rectangular scroll flower tooth.

Further, the upper surface of the tooth structure is provided with a boss or a tip.

Further, the tubular expansion riveting structure is a tubular structure, and the outer diameter of the tubular expansion riveting structure is smaller than the outer diameter of the nut body.

Further, the tubular expansion riveting structure and the nut body are coaxially arranged.

Further, the internally threaded bore is coaxial with the nut body.

Further, the internal threaded holes penetrate through the upper end and the lower end of the nut body and are communicated with the tubular expansion riveting structure.

Further, the pair of locking pieces are bolts.

The utility model has the beneficial effects that:

the expansion riveting nut has the advantages of simple structure, low production cost, convenient use, rapid riveting, reliable connection, energy conservation, environmental protection and the like, is suitable for a metal sheet, and can realize the installation of the nut on the sheet below 1mm, thereby realizing the fastening connection of the metal sheet below 1 mm. The tubular expansion riveting structure can be expanded outwards in a drum shape when being pressed, not only can clamp a thin plate, but also can avoid the separation of the tubular expansion riveting structure and the thin plate, and the spline structure on the nut body can be extruded into the thin plate after being pressed, so that the multipoint positioning locking between the nut body and the thin plate is realized, the anti-rotation torque of the nut is greatly improved, and the anti-loosening performance is enhanced. In addition, the internal thread of the nut body is locked with the thread of the locking piece, so that the clamping force on the thin plate can be increased, and the anti-rotation torque of the nut can be enhanced.

The utility model is not affected by the thickness of the thin plate and the thin plate material under the matching of the tubular expansion riveting structure, the nut body, the spline structure and the internal threads, and can be used for various material plates such as steel plates, aluminum plates, alloys, carbon fiber plates and the like.

Drawings

FIG. 1 is a schematic view of a weld nut of the prior art;

FIG. 2 is a schematic view of a prior art clinch nut;

FIG. 3 is a schematic front view of the rivet nut of the present utility model applied to a metal sheet;

FIG. 4 is a schematic top view of the rivet nut of the present utility model applied to a metal sheet;

FIG. 5 is a side cross-sectional view of the upset clinch nut of the present utility model;

FIG. 6 is a schematic view of the simulated expansion rivet nut of the present utility model prior to installation;

fig. 7 is a schematic view of the state of the simulated expansion rivet nut of the present utility model after installation.

Wherein: 1-tubular expansion riveting structure, 2-nut body, 3-tooth structure and 4-internal thread.

Detailed Description

In order to better understand the technical solutions of the present application, the present utility model will be further described in detail below with reference to the drawings and the embodiments.

The terms of upper, lower, left, right, front, rear, and the like in the present application are established based on the positional relationship shown in the drawings. The drawings are different, and the corresponding positional relationship may be changed, so that the scope of protection cannot be understood.

In the present utility model, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected or detachably connected, integrally connected or mechanically connected, electrically connected or communicable with each other, directly connected or indirectly connected through an intermediate medium, or communicated between two components, or an interaction relationship between two components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The embodiment describes a rivet-expanding nut applied to a metal sheet, as shown in fig. 3, the rivet-expanding nut comprises a tubular rivet-expanding structure 1 and a nut body 2, wherein the tubular rivet-expanding structure 1 is arranged above the nut body 2 and is coaxially arranged with the nut body 2.

The tubular expansion riveting structure 1 is a tubular structure, the outer diameter size of the tubular expansion riveting structure is smaller than that of the nut body 2, and the upper end of the tubular expansion riveting structure 1 can be expanded outwards in a drum shape when being pressed so as to match with the nut body 2 to clamp a thin plate.

The nut body 2 is used for providing the intensity of supporting fastening connection, and nut body 2 center has coaxial internal thread hole, and the internal thread hole runs through nut body 2 upper and lower both ends, communicates with each other with tubular expanding and riveting structure 1, is convenient for with to the locking piece matched connection by the clamping part, also can alleviate the weight of this expanding and riveting nut simultaneously. The internal thread 4 (see fig. 5) on the internal thread hole is matched with the external thread of the locking piece (such as a bolt), can be in threaded connection and locked with the locking piece, and simultaneously provides a thread guarantee load required by riveting fastening.

As shown in fig. 4, a plurality of spline structures 3 are uniformly arranged on the upper surface of the top end of the nut body 2 around the tubular expansion rivet structure 1, and the circumferential array center of the spline structures 3 is the center of the top end of the nut body 2. The flower tooth structure 3 can be extruded into a thin plate to be fastened when the expansion rivet nut is pressed, so that the anti-rotation torque of the nut is improved, and the anti-loosening performance is enhanced. The flower tooth structures 3 are arranged at intervals, the intervals can be used as guide grooves, and when the flower tooth structures 3 are extruded into the thin plate, the deformation part of the lower surface of the thin plate can be extruded into the guide grooves, so that the connection of the expansion rivet nut and the thin plate is facilitated. The flower tooth structure 3 of this embodiment is rectangular banner flower tooth, has boss or pointed end at the upper surface of flower tooth structure 3, and the setting of boss or pointed end is convenient for flower tooth structure 3 squeeze into the sheet metal into, and rectangular banner flower tooth has increased the area of contact with the sheet metal, can strengthen the anti-rotation moment of torsion of nut.

When the expansion riveting nut is used, as shown in fig. 6, the tubular expansion riveting structure 1 passes through a thin plate to be fastened at a position to be fastened, and when the tubular expansion riveting structure 1 is pressed, as shown in fig. 7, the upper end of the tube of the tubular expansion riveting structure 1 is expanded outwards in a drum shape at the position of the thin plate to be fastened, and the upper end of the tube is matched with the top end of the nut body 2 to clamp the thin plate, so that good anti-rotation and anti-pushing performance is formed. Meanwhile, the spline structure 3 is extruded into the thin plate, and the connection between the expansion rivet nut and the thin plate is positioned and fixed, so that the expansion rivet nut is prevented from twisting relative to the thin plate. The locking piece is screwed into an internal threaded hole of the nut body 2 to be in threaded connection with the nut body 2, the clamping force of the nut body 2 and the tubular expansion riveting structure 1 on the thin plate is enhanced while locking, and meanwhile, the spline structure 3 is extruded into the thin plate to the greatest extent, so that the anti-rotation torque of the nut is enhanced.

The expansion riveting nut can be installed on thin plates with different plate thicknesses, particularly metal thin plates with the thickness of less than 1mm under the cooperation of the tubular expansion riveting structure 1, the nut body 2, the spline structure 3 and the internal threads 4, and when the expansion riveting nut is pressed, the thin plates can be completely clamped by the expansion deformation of the tubular expansion riveting structure 1.

While the principles of the utility model have been described in detail in connection with the preferred embodiments thereof, it should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the implementations of the utility model and are not intended to limit the scope of the utility model. The details of the embodiments are not to be taken as limiting the scope of the utility model, and any obvious modifications based on equivalent changes, simple substitutions, etc. of the technical solution of the utility model fall within the scope of the utility model without departing from the spirit and scope of the utility model.

Claims (10)

1. The expansion riveting nut applied to the metal sheet is characterized by comprising a tubular expansion riveting structure (1) and a nut body (2); the tubular expansion riveting structure (1) is arranged above the nut body (2); when the tubular expansion riveting structure (1) is pressed, the upper end of the tubular expansion riveting structure (1) is expanded outwards in a drum shape, and is matched with the nut body (2) to clamp a thin plate to be fastened; the upper surface of the top end of the nut body (2) is uniformly provided with a plurality of flower tooth structures (3) around the tubular expansion riveting structure (1), and the flower tooth structures (3) are extruded into the thin plate when the expansion riveting nut is pressed; the nut body (2) is internally provided with an internal threaded hole, and an internal thread (4) of the internal threaded hole is used for being in threaded connection with the locking piece.

2. The rivet nut for sheet metal application according to claim 1, characterized in that the circumferential array center of a plurality of the tooth structures (3) is the top center of the nut body (2).

3. The rivet nut applied to sheet metal according to claim 1, characterized in that a plurality of said tooth structures (3) are arranged at intervals, said intervals being guide grooves for the placement of deformed portions of said sheet metal.

4. The rivet nut for sheet metal application according to claim 1, characterized in that the tooth structure (3) is a rectangular banner tooth.

5. The rivet nut for sheet metal according to any one of claims 1 to 4, characterized in that the upper surface of the tooth structure (3) has a boss or tip.

6. The expansion rivet nut applied to the metal sheet according to claim 1, characterized in that the tubular expansion rivet structure (1) is a tubular structure, and the outer diameter of the tubular expansion rivet structure (1) is smaller than the outer diameter of the nut body (2).

7. The rivet-expanding nut applied on sheet metal according to claim 1, characterized in that the tubular rivet-expanding structure (1) is arranged coaxially to the nut body (2).

8. The rivet nut for sheet metal application according to claim 7, characterized in that said internally threaded hole is coaxial with said nut body (2).

9. The rivet-expanding nut applied to the metal sheet according to claim 1, wherein the internally threaded holes penetrate through the upper end and the lower end of the nut body (2) and are communicated with the tubular rivet-expanding structure (1).

10. The expansion rivet nut for sheet metal according to claim 1, wherein said pair of locking members are bolts.