High-torsion-resistance pressing rivet nut

Abstract

The utility model discloses a high torsion resistance pressing rivet nut in the field of pressing rivet nuts, which comprises a nut body, a first protruding part and a second protruding part which are coaxially arranged, and a gasket sleeved on the outer side of the first protruding part, and the outer side of the first protruding part is provided with knurling teeth with raised lines, so that the roughness and the locking contact surface of the surface of the nut are increased, and the service life of the nut is prolonged. The torsion resistance of the nut is effectively improved, the guide groove communicating end to end is formed in the outer side of the second protruding part, it is ensured that the nut is tightly matched with the mounting hole during mounting, and the risks of loosening and falling are reduced. The gasket not only increases the contact area of the nut and the plate and improves the stability of connection, but also is adhered with the anti-skid layer, so that the reliability of connection is further enhanced. Meanwhile, the end, close to the first protruding part, of the nut body is provided with a plurality of inserting rods protruding upwards, the inserting rods penetrate through the interior of the gasket and are ejected out, and extra stable support is provided for connection. The high-torsion-resistance connector is compact in structure, excellent in performance and suitable for various connection scenes needing high-torsion-resistance performance.

Description

Technical Field

[0001] This utility model relates to the field of press-fit nut technology, specifically a high-torsion press-fit nut. Background Technology

[0002] In the current field of mechanical connections, press-fit nuts are a common connecting element widely used for connecting and fixing various sheet metal or metal components. Traditional press-fit nut designs are relatively simple, usually consisting of only the nut body and some protruding structures. While these designs can meet basic connection requirements, their connection stability and torsional resistance are often insufficient under complex working conditions or high torque environments.

[0003] Traditional press-fit nuts are prone to loosening or damage when subjected to large torques due to insufficient friction at the connection surfaces or inadequate torsional strength. This not only affects the overall performance of the mechanical system but may also pose safety hazards. Furthermore, during installation, the lack of an effective guiding structure often makes it difficult to ensure a tight fit between traditional press-fit nuts and the mounting holes, increasing the risk of loosening and detachment. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a high torsion resistance press-fit nut, which can effectively solve the technical problem of poor torsion resistance of current press-fit nuts.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A high-torsion-resistant press-fit nut includes a nut body. One end of the nut body is provided with an upwardly protruding first protrusion, and the end of the first protrusion away from the nut body is provided with an upwardly protruding second protrusion. The nut body, the first protrusion, and the second protrusion are coaxially arranged. The outer side of the first protrusion is provided with a plurality of embossed teeth along the circumferential direction, and the side of the embossed teeth is provided with a plurality of raised strips. The outer side of the second protrusion is provided with a guide groove that connects the beginning and end along the circumferential direction.

[0007] The nut body is connected to a washer that is sleeved on the outside of the first protrusion. The washer is in close contact with one end of the nut body and extends outward from the nut body. The side of the washer near the second protrusion is covered with an anti-slip layer.

[0008] The nut body has a plurality of upwardly protruding inserts at one end near the first protrusion. The inserts are distributed around the periphery of the first protrusion and pass through the interior of the washer and push upward.

[0009] Furthermore, the outer diameters of the nut body, the first protrusion, and the second protrusion gradually decrease.

[0010] Furthermore, the guide groove has an arc-shaped cross-section, and the inner wall of the guide groove is provided with a soft rubber layer.

[0011] Furthermore, the washer is detachable from the nut body, and a hole is provided in the middle of the washer, with the outer contour formed by the embossed teeth and the raised strip matching the hole.

[0012] Furthermore, the insertion rods are distributed in a ring at equal intervals with the first protrusion as the base point.

[0013] Furthermore, a central threaded hole is provided in the middle of the nut body, which is connected to one end of the second protrusion. An inclined surface is provided at the opening edge of the central threaded hole near the end of the second protrusion, so that the inner diameter of the central threaded hole gradually increases towards the end of the second protrusion.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention increases the surface roughness of the rivet nut by using embossed teeth with raised ridges and guide grooves on the side, and also forms an additional contact surface for locking. This allows the nut to more effectively resist torsional deformation when subjected to torque. Furthermore, during installation, the guide groove ensures a tight fit between the rivet nut and the mounting hole, reducing the possibility of loosening and falling off. In addition, the use of washers increases the contact area with the sheet metal, further improving the stability of the connection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure from the top of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure from the bottom direction of an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of this utility model after the gasket has been removed, showing the top direction.

[0019] Figure 4 This is a schematic diagram of the bottom direction of the overall structure of this utility model after the gasket is removed;

[0020] Figure 5 This is a schematic diagram of the gasket structure according to an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the second protrusion in an embodiment of the present invention;

[0022] Numbering on the map:

[0023] 1-Nut body, 2-First protrusion, 3-Second protrusion, 4-Embossing teeth, 5-Raised strip, 6-Guide groove, 7-Washer, 8-Anti-slip layer, 9-Plug, 10-Soft rubber layer, 11-Hole, 12-Center screw hole, 13-Inclined surface. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1-6 As shown, this utility model provides a high-torsion-resistance rivet nut, which is mainly used for locking on sheet metal. The sheet metal mainly includes thin plates or sheet metal, and the nut can withstand higher torque without loosening or being damaged.

[0026] The structure of the press-fit nut mainly includes a nut body 1. One end of the nut body 1 is provided with an upwardly protruding first protrusion 2, and the end of the first protrusion 2 away from the nut body 1 is provided with an upwardly protruding second protrusion 3. The nut body 1, the first protrusion 2 and the second protrusion 3 are coaxially arranged to form a multi-layer structure, and the outer diameter of the nut body 1, the first protrusion 2 and the second protrusion 3 gradually decreases.

[0027] Multiple embossed teeth 4 are formed circumferentially on the outer side of the first protrusion 2, and multiple raised strips 5 are provided on the sides of the embossed teeth 4. A guide groove 6 with its ends connected is formed circumferentially on the outer side of the second protrusion 3. The embossed teeth 4 are responsible for generating sufficient friction when the nut body 1 is pressed into the plate, thereby ensuring that the press-fit nut can be firmly fixed to the plate. The embossed teeth 4 are supplemented with matching raised strips 5. The embossed teeth and raised strips 5 can also cause plastic deformation of the material around the hole in the plate during the press-fitting process. These deformed materials are squeezed into the guide groove, further enhancing the connection strength between the press-fit nut and the plate.

[0028] The guide groove 6 has an arc-shaped cross-section, and its inner wall is provided with a soft rubber layer 10. The arc-shaped cross-section design allows the edge of the sheet metal opening to maintain a smooth sliding trajectory within the guide groove 6, reducing frictional resistance and sliding noise, and helping to ensure stability and accuracy during the sliding process. The soft rubber layer 10 also has a certain buffering and shock-absorbing effect, absorbing the impact and vibration generated during sliding, protecting the guide groove 6 and the sliding object from damage, and filling the gap between the edge of the sheet metal opening and the guide groove 6, improving the stability of the connection.

[0029] To further enhance the stability of the press-fit nut, a washer 7 is attached to the outside of the first protrusion 2 of the nut body 1. An anti-slip layer 8 is adhered to the side of the washer 7 near the second protrusion 3. The washer 7 is tightly attached to one end of the nut body 1 and extends outward from it. During installation, the washer 7 extends outward from the nut body 1, increasing the contact area between the nut body 1 and the plate, helping to distribute pressure and prevent localized overload or damage. Furthermore, the washer 7 provides additional support for the press-fit nut and enhances its stability during connection, preventing loosening due to vibration or external forces. The anti-slip layer 8 on the washer 7 helps prevent the nut body 1 from sliding or rotating due to insufficient friction during connection. The anti-slip layer 8 increases the friction between the nut body 1 and the plate, ensuring the press-fit nut is firmly fixed in place and not easily loosened.

[0030] The washer 7 is detachable from the nut body 1. A hole 11 is provided in the center of the washer 7, and the outer contour formed by the knurled teeth 4 and the raised ribs 5 matches the hole 11. This detachable design allows for easy replacement or adjustment of the washer 7 during installation and removal to accommodate different connection requirements or repair damaged washer 7. The shape of the hole 11 matches the outer contour formed by the knurled teeth 4 and the raised ribs 5, ensuring that the washer 7 is accurately positioned on the nut body 1 during installation, preventing misalignment or loosening, thus enhancing connection stability. When the nut is tightened, the knurled teeth 4 and the raised ribs 5 embed into the hole 11 of the washer 7, forming a more secure connection.

[0031] The nut body 1 has multiple upward-protruding inserts 9 near the first protrusion 2. These inserts 9 are distributed around the periphery of the first protrusion 2, passing through the interior of the washer 7 and protruding upwards. The inserts 9 are evenly spaced in a ring around the first protrusion 2. The insertions 9 passing through the washer 7 and protruding upwards create additional locking points with the plate, enhancing the connection stability between the nut and the plate and preventing loosening due to vibration or external forces. When the nut is subjected to shear force, the inserts 9 can bear some of the force and distribute it onto the plate, reducing the stress on the nut itself and improving the reliability and durability of the connection. During connection, the inserts 9 passing through the washer 7 effectively prevent displacement or deformation of the washer 7. This helps maintain tight contact between the washer 7, the nut body 1, and the connector, ensuring that the anti-slip layer 8 can fully exert its anti-slip function.

[0032] To facilitate assembly with matching screws or other fasteners, a central threaded hole 12 is provided in the middle of the nut body 1, which communicates with one end of the second protrusion 3. An inclined surface 13 is provided at the opening edge of the central threaded hole 12 near the end of the second protrusion 3, causing the inner diameter of the central threaded hole 12 to gradually increase towards the second protrusion 3. When a bolt or other fastener is screwed into the central threaded hole 12, it first contacts the inclined surface 13. Due to the presence of the inclined surface 13, the bolt can more easily enter the central threaded hole 12 along the gradually increasing inner diameter. As the bolt continues to be screwed in, its threads gradually engage with the threads of the nut body 1, forming a secure connection.

[0033] Compared to traditional technologies, this solution increases the surface roughness of the rivet nut by using the embossed teeth 4 with raised strips 5 and guide grooves 6 on the side. This also creates additional contact surfaces for locking, allowing the nut to more effectively resist torsional deformation under torque. Furthermore, during installation, the guide grooves 6 ensure a tight fit between the rivet nut and the mounting hole, reducing the possibility of loosening and detachment. Additionally, the use of washers increases the contact area with the sheet metal, further improving the stability of the connection.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-torsion-resistance rivet nut, comprising a nut body, characterized in that: One end of the nut body is provided with an upwardly protruding first protrusion, and the end of the first protrusion away from the nut body is provided with an upwardly protruding second protrusion. The nut body, the first protrusion and the second protrusion are coaxially arranged. Multiple embossed teeth are provided on the outer side of the first protrusion along the circumferential direction, and multiple raised strips are provided on the side of the embossed teeth. A guide groove with the beginning and end connected is provided on the outer side of the second protrusion along the circumferential direction. The nut body is connected to a washer that is sleeved on the outside of the first protrusion. The washer is in close contact with one end of the nut body and extends outward from the nut body. The side of the washer near the second protrusion is covered with an anti-slip layer. The nut body has a plurality of upwardly protruding inserts at one end near the first protrusion. The inserts are distributed around the periphery of the first protrusion and pass through the interior of the washer and push upward.

2. The high torsion resistance rivet nut according to claim 1, characterized in that: The outer diameters of the nut body, the first protrusion, and the second protrusion gradually decrease.

3. The high torsion resistance rivet nut according to claim 1, characterized in that: The guide groove has an arc-shaped cross-section, and the inner wall of the guide groove is provided with a soft rubber layer.

4. A high-torsion-resistance rivet nut according to claim 1, characterized in that: The washer is detachable from the nut body. A hole is provided in the middle of the washer, and the outer contour formed by the embossed teeth and the raised strip matches the hole.

5. A high-torsion-resistance rivet nut according to claim 1, characterized in that: The insertion rods are distributed in a ring at equal intervals with the first protrusion as the base point.

6. A high-torsion-resistance press-fit nut according to any one of claims 1-5, characterized in that: The nut body has a central screw hole in the middle that communicates with one end of the second protrusion. The opening edge of the central screw hole near the end of the second protrusion has an inclined surface, so that the inner diameter of the central screw hole gradually increases towards the end of the second protrusion.

Images