Casting pressing and embedding nut

Abstract

The utility model provides a casting press-embedded nut. The casting press-embedded nut is characterized by comprising a riveting positioning guide ring (1), helical tooth-shaped knurls (2) and grooves (3), the positioning guide rings (1) are positioned at the top and the bottom of the casting press-embedded nut; the helical tooth-shaped knurls (2) surround the periphery of the casting press-embedded nut body and are formed by uniformly distributing teeth with the same shape on the casting press-embedded nut body, and when the casting press-embedded nut body is pressed into a metal plate body, gaps of the helical tooth-shaped knurls (2) are used for containing materials; grooves (3) are formed in the helical tooth-shaped knurls (2), and when parts are pressed into a metal plate, materials flow into the grooves (3). By means of the design, after the part is pressed, more metal plate materials can be contained in the ring groove, the area of the pushed-out contact metal plate is increased, and therefore the better anti-push-out performance is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metal riveting technical field, concretely relates to a cast embedding nut. BACKGROUND

[0002] With the development of new energy vehicles, the promotion of automobile lightweight scheme is also very rapid, and the use amount of aluminum alloy, a low-strength material, on the vehicle body is also rapidly increasing. The base body strength of the aluminum vehicle body is not enough during assembly, and the required performance cannot be achieved, resulting in damage to the standard internal thread aluminum base. In order to prevent the aluminum vehicle body base from being damaged during assembly, a ST internal thread is usually machined on the aluminum base, and then a steel wire sleeve is assembled and used, as shown in FIG. Figure 1 However, the steel wire sleeve may jump teeth during installation. When assembling the hand tool bolt, the problem may be solved by repairing, or the aluminum vehicle body ST internal thread may be directly pulled out, resulting in the scrapping of the vehicle body assembly. In addition, the steel wire sleeve has a certain elasticity like a spring. After production, the transfer mode and various factors during transportation may cause the tooth pitch of each circle of teeth under natural conditions to be unable to be completely guaranteed. During punching and tapping of the sheet metal, the debris in the hole may fly around during cleaning, which has a certain impact on the working environment and personnel safety, and may also cause the debris to be not cleaned completely, resulting in the adhesion of the debris in the thread hole, affecting the assembly efficiency and threatening the integrity of the ST internal thread. Therefore, how to assemble without more complex processes under the condition of consistent materials has become an urgent problem to be improved. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims to provide a cast embedding nut, which can accommodate more sheet metal materials in the ring groove after pressure assembly, and increase the sheet metal area contacted by the cast embedding nut, thereby forming better anti-extrusion performance.

[0004] The utility model provides a cast embedding nut, which comprises a riveting positioning guide ring, an oblique-toothed knurl and a groove.

[0005] The positioning guide ring is located at the top and the bottom of the cast embedding nut.

[0006] The oblique-toothed knurl is arranged around the outer periphery of the cast embedding nut body, and is uniformly distributed on the cast embedding nut body by teeth with the same shape. When the cast embedding nut is pressed into the sheet metal body, the gap between the oblique-toothed knurls is used to accommodate materials.

[0007] The groove is arranged on the oblique-toothed knurl. When the part is pressure-assembled into the sheet metal, the material flows into the groove (3).

[0008] Further, the cast embedding nut is internally provided with a thread.

[0009] Further, the grooves arranged on the oblique-toothed knurl are arranged at positions close to the top and the bottom of the cast embedding nut.

[0010] Compared with the prior art, the cast-embedded nut has the beneficial effects that:

[0011] (1) The oblique tooth-shaped knurling allows the tooth to be more easily inserted into the sheet metal during press fitting, and perfect fitting with the material can be achieved only by press fitting, and since the oblique tooth-shaped knurling is uniformly distributed on the surface of the part, the material is more easily filled into the gap of the uniformly distributed tooth-shaped features to achieve close fitting, and each inclined surface of the oblique tooth-shaped knurling acts as a force receiving surface during rotation, greatly increasing the force receiving area and enabling the nut to have better anti-rotation performance.

[0012] (2) The oblique tooth-shaped knurling is provided with a spiral groove, which can accommodate more sheet metal material in the ring groove after press fitting, and increase the sheet metal area contacted by the spiral groove, thereby forming better anti-ejection performance. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic view of a steel wire sleeve of the prior art;

[0014] Figure 2 is a perspective view of the cast-embedded nut;

[0015] Figure 3 is a front view of the cast-embedded nut;

[0016] Figure 4 is a sectional view of the cast-embedded nut.

[0017] Wherein: 1-positioning guide ring, 2-oblique tooth-shaped knurling, 3-groove. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] As shown in Figure 2 , this embodiment provides a cast-embedded nut, which comprises a riveting positioning guide ring 1, an oblique tooth-shaped knurling 2 and a groove 3.

[0020] Wherein, the positioning guide ring 1 is located at the top and bottom of the cast-embedded nut, and is used as a positioning ring of sheet metal hole and press fitting mold for better positioning during press fitting.

[0021] The oblique tooth-shaped knurl 2 is formed by distributing the same shape teeth on the part body, and when the part is pressed into the metal body, the material can be accommodated in the gap of the oblique tooth-shaped knurl 2, thereby forming a stable anti-rotation effect.

[0022] The oblique tooth-shaped knurl is provided with a groove 3 near the top and bottom of the cast pressing embedding nut, and when the part is pressed into the metal body, the material flowing into the groove 3 in the oblique tooth can form a stable anti-extrusion feature.

[0023] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for the skilled in the art, it still can be modified, or the equivalent replacement of part of the technical features recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included within the scope of the present application.

Claims

1. A cast press-fit nut, characterized by: The invention comprises a riveting positioning guide ring (1), bevel toothed knurl (2) and groove (3); The positioning guide ring (1) is located at the top and bottom of the cast press-in nut; The bevel toothed knurl (2) is wrapped around the outer periphery of the cast press-in nut body, and is evenly distributed on the cast press-in nut body by the same shape teeth, and the gap of the bevel toothed knurl (2) is used to accommodate the material when pressed into the sheet metal body; The bevel toothed knurl (2) is provided with a groove (3), and when the part is pressed into the sheet metal, the material flows into the groove (3).

2. The cast press-fit nut of claim 1, wherein: The cast press-in nut is internally provided with threads.

3. The cast press-fit nut of claim 1, wherein: The groove (3) on the bevel toothed knurl (2) is respectively arranged near the top and bottom of the cast press-in nut.

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