Anti-loose pressing rivet nut
By introducing reinforcement rings and annular gaskets into the press rivet nuts, and using stamping fixing of embossed garlands, embossing tables and embossed teeth, the problem of loosening of the press rivet nuts in vibrating environments is solved, achieving long-lasting connection stability and structural strengthening.
Patent Information
- Application Number
- CN202422593224.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-26
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-26
AI Technical Summary
Existing rivet nuts are prone to loosening in long-term vibration environments, causing the nut to loosen, increasing maintenance costs and risk of mechanical failure.
An anti-loose rivet nut is designed. By installing a reinforcement ring and annular gasket inside the nut body, the annular gasket is fixed with the matching of the secondary internal thread and the external thread, and an embossing garland, embossing table and embossing teeth are installed on the top of the nut body. The thin plate is stamped through the punch to fix and lock it with the thin plate, enhancing the connection stability.
It realizes the long-lasting anti-loosening effect of the press-rivet nut, improves the connection stability, avoids mechanical failures caused by loosening, and reduces maintenance costs.
Smart Images
Figure CN223136668U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of press riveting nuts, and specifically, to a lock washer press riveting nut. Background Art
[0002] The press riveting nut, also known as a riveting nut and a self-locking nut, is a nut applied to thin plates or sheet metals. It has a circular shape and one end is provided with knurled teeth and a guiding groove. Its principle is that the knurled teeth are pressed into the pre-set hole positions of the sheet metal. Generally, the diameter of the pre-set hole is slightly smaller than the knurled teeth of the press riveting nut. Through pressure, the knurled teeth of the press riveting nut are squeezed into the plate, causing plastic deformation around the pre-set hole. The deformed material is squeezed into the guiding groove, thus achieving a locking effect.
[0003] In order to cooperate with the use of other components, threads are usually provided inside the press riveting nut. After long-term use, the threaded connection may become loose. The loosening of the threads is mainly due to the existence of a lateral gap when the threads are engaged. When there is vibration, the basic element of the thread, the "lead angle of the thread", becomes the "loosening angle of the thread". At the initial stage of use, the existing press riveting nut can ensure a good locking effect. However, under the influence of a long-term vibration environment, the existing press riveting nut is prone to loosening, resulting in the nut becoming loose axially, leading to mechanical failures and increasing the consumption of nuts and the time cost of maintenance personnel. Summary of the Utility Model
[0004] The utility model provides a lock washer press riveting nut, which solves the problem that the press riveting nut in the related art is prone to loosening.
[0005] The technical solution of the utility model is as follows: A lock washer press riveting nut includes a nut body. A non-slip component is installed at the bottom of the nut body, and a strengthening component is installed inside the nut body. A main internal thread is provided inside the nut body. A circular boss is fixedly connected to the top of the nut body, and a circular guiding groove is provided inside the circular boss.
[0006] Preferably, the strengthening component includes a reinforcing ring. The reinforcing ring is arranged inside the nut body. A circular gasket is fixedly installed between the bottom of the reinforcing ring and the nut body. External threads are provided on the outside of the reinforcing ring, and secondary internal threads are provided inside the nut body. The reinforcing ring and the nut body are threadedly connected through the external threads and the secondary internal threads. Internal threads are provided inside the reinforcing ring.
[0007] Preferably, the non-slip component includes a connecting ring. The connecting ring is fixed to the bottom of the nut body. A limiting ring is fixedly connected to the bottom of the connecting ring, and a rubber gasket is fixedly installed inside the connecting ring.
[0008] Preferably, a knurled ring is fixedly connected to the top of the nut body, a knurled platform is fixedly connected to the top of the nut body, a square groove is formed in the outer part of the knurled platform, and knurled teeth are fixedly connected to the outer part of the annular boss.
[0009] Preferably, a lower mold is arranged below the nut body, a cylindrical groove is formed in the lower mold, the outer part of the nut body is in contact with the inner part of the cylindrical groove, a thin plate is arranged outside the annular boss, and a punch is arranged on the top of the annular boss.
[0010] Preferably, the inner diameters of the annular gasket and the reinforcing ring are larger than the inner diameter of the nut body, and the reinforcing ring is made of high-strength carbon steel.
[0011] Preferably, there are several knurled rings, knurled platforms and knurled teeth, and multiple knurled rings, knurled platforms and knurled teeth are arranged in a circumferential array on the top of the nut body.
[0012] Preferably, the side view section of the annular boss is Y-shaped, and the inner section of the nut body is a trapezoidal structure.
[0013] The working principle and beneficial effects of the present utility model are as follows:
[0014] 1. In the present utility model, the annular gasket is placed inside the nut body, and then the reinforcing ring is installed through the cooperation of the secondary internal thread and the external thread. At the same time, the reinforcing ring fixes the position of the annular gasket. The nut body is placed in the cylindrical groove of the lower mold, the thin plate is placed on the top of the nut body, and the punch is started to punch the thin plate, so that the thin plate changes according to the shapes of the knurled ring, the knurled platform and the knurled teeth and is in contact and fixed with them, which can fix and lock the nut body and the thin plate, so as to achieve the effect of permanent anti-loosening. At the same time, it can also strengthen the structure of the riveting part of the rivet nut, avoid extrusion deformation and affect the structural stability of the rivet nut, and improve the connection stability of the rivet nut. The structure is reasonable and practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.
[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0017] Figure 2 is a schematic diagram of the main view section structure of the present utility model;
[0018] Figure 3 is the present utility model Figure 2 the enlarged view at a in;
[0019] Figure 4 is a schematic diagram of the top view section structure of the present utility model;
[0020] Figure 5 Schematic diagram of the thin plate placement structure of the present utility model;
[0021] Figure 6 Schematic diagram of the structure after the thin plate of the present utility model is installed;
[0022] In the figure: 1. Nut body; 2. Anti-slip component; 21. Connecting ring; 22. Limiting ring; 23. Rubber gasket; 3. Main internal thread; 4. Reinforcement component; 41. Reinforcing ring; 42. Annular gasket; 43. Internal thread; 44. External thread; 45. Secondary internal thread; 5. Annular boss; 6. Annular guide groove; 7. Knurled teeth; 8. Knurled ring; 9. Knurled platform; 10. Square groove; 11. Lower die; 12. Cylindrical groove; 13. Thin plate; 14. Punch. Specific implementation mode
[0023] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.
[0024] Embodiment 1
[0025] As Figures 1 to 6 shown, this embodiment proposes a self-locking press riveting nut, including a nut body 1, an anti-slip component 2 is installed at the bottom of the nut body 1, a reinforcement component 4 is installed inside the nut body 1, a main internal thread 3 is provided inside the nut body 1, an annular boss 5 is fixedly connected to the top of the nut body 1, and an annular guide groove 6 is provided inside the annular boss 5.
[0026] Furthermore, the reinforcement component 4 includes a reinforcing ring 41. The reinforcing ring 41 is arranged inside the nut body 1. An annular gasket 42 is fixedly installed between the bottom of the reinforcing ring 41 and the nut body 1. An external thread 44 is provided on the outside of the reinforcing ring 41. A secondary internal thread 45 is provided inside the nut body 1. The reinforcing ring 41 and the nut body 1 are threadedly connected through the external thread 44 and the secondary internal thread 45. An internal thread 43 is provided inside the reinforcing ring 41. The inner diameters of the annular gasket 42 and the reinforcing ring 41 are larger than the inner diameter of the nut body 1. The reinforcing ring 41 is made of high-strength carbon steel. The annular gasket 42 is placed inside the nut body 1, and then the reinforcing ring 41 is installed through the cooperation of the secondary internal thread 45 and the external thread 44. At the same time, the reinforcing ring 41 fixes the position of the annular gasket 42, which can strengthen the structure of the press riveting part of the press riveting nut, avoid extrusion deformation and affect the structural stability of the press riveting nut, and improve the connection stability of the press riveting nut.
[0027] Further, the anti-slip component 2 includes a connecting ring 21 which is fixed to the bottom of the nut body 1. A limiting ring 22 is fixedly connected to the bottom of the connecting ring 21, and a rubber gasket 23 is fixedly installed inside the connecting ring 21, enabling the press riveting nut to play an anti-slip role during operation, thereby enhancing its stability.
[0028] Further, a knurled ring 8 is fixedly connected to the top of the nut body 1, and a knurled platform 9 is fixedly connected to the top of the nut body 1. A square groove 10 is formed outside the knurled platform 9, and knurled teeth 7 are fixedly connected to the outside of the annular boss 5. The number of the knurled rings 8, the knurled platforms 9 and the knurled teeth 7 is several, and multiple knurled rings 8, knurled platforms 9 and knurled teeth 7 are arranged in a circular array on the top of the nut body 1. The punch 14 is activated to punch the thin plate 13, so that the thin plate 13 changes according to the shapes of the knurled ring 8, the knurled platform 9 and the knurled teeth 7 and is in contact with and fixed to them, enabling the nut body 1 and the thin plate 13 to be fixedly locked, thereby achieving the effect of permanent anti-loosening.
[0029] Further, a lower die 11 is arranged below the nut body 1. A cylindrical groove 12 is formed inside the lower die 11. The outside of the nut body 1 is in contact with the inside of the cylindrical groove 12. A thin plate 13 is arranged outside the annular boss 5, and a punch 14 is arranged on the top of the annular boss 5. The nut body 1 is placed in the cylindrical groove 12 of the lower die 11, the thin plate 13 is placed on the top of the nut body 1, and the punch 14 is activated to punch the thin plate 13, providing a power source for the use of the press riveting nut.
[0030] In this embodiment, the annular gasket 42 is placed inside the nut body 1, and then the reinforcing ring 41 is installed through the cooperation of the secondary internal thread 45 and the external thread 44. At the same time, the reinforcing ring 41 fixes the position of the annular gasket 42. The nut body 1 is placed in the cylindrical groove 12 of the lower die 11, the thin plate 13 is placed on the top of the nut body 1, and the punch 14 is activated to punch the thin plate 13, so that the thin plate 13 changes according to the shapes of the knurled ring 8, the knurled platform 9 and the knurled teeth 7 and is in contact with and fixed to them, enabling the nut body 1 and the thin plate 13 to be fixedly locked, thereby achieving the effect of permanent anti-loosening. At the same time, the structure of the press riveting part of the press riveting nut can be strengthened, avoiding extrusion deformation and affecting the structural stability of the press riveting nut, and improving the connection stability of the press riveting nut. The structure is reasonable and practical.
[0031] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A locknut for press riveting, characterized in that, It includes a nut body (1), a non-slip component (2) is installed at the bottom of the nut body (1), a strengthening component (4) is installed inside the nut body (1), a main internal thread (3) is provided inside the nut body (1), a circular boss (5) is fixedly connected to the top of the nut body (1), and a circular guide groove (6) is provided inside the circular boss (5).
2. The anti-loosening press riveting nut according to claim 1, characterized in that, The strengthening component (4) includes a reinforcing ring (41), the reinforcing ring (41) is arranged inside the nut body (1), an annular gasket (42) is fixedly installed between the bottom of the reinforcing ring (41) and the nut body (1), an external thread (44) is provided on the outside of the reinforcing ring (41), a secondary internal thread (45) is provided inside the nut body (1), and the reinforcing ring (41) and the nut body (1) are threadedly connected through the external thread (44) and the secondary internal thread (45), and an internal thread (43) is provided inside the reinforcing ring (41).
3. The anti-loosening press riveting nut according to claim 1, wherein The non-slip component (2) includes a connecting ring (21), the connecting ring (21) is fixed to the bottom of the nut body (1), a limiting ring (22) is fixedly connected to the bottom of the connecting ring (21), and a rubber gasket (23) is fixedly installed inside the connecting ring (21).
4. The anti-loosening press riveting nut according to claim 1, characterized in that, A knurled ring (8) is fixedly connected to the top of the nut body (1), a knurled platform (9) is fixedly connected to the top of the nut body (1), a square groove (10) is provided on the outside of the knurled platform (9), and knurled teeth (7) are fixedly connected to the outside of the circular boss (5).
5. The anti-loosening press riveting nut according to claim 1, characterized in that, A lower mold (11) is provided below the nut body (1), a cylindrical groove (12) is provided inside the lower mold (11), the outside of the nut body (1) is in contact with the inside of the cylindrical groove (12), a thin plate (13) is provided on the outside of the circular boss (5), and a punch (14) is provided on the top of the circular boss (5).
6. The anti-loosening press riveting nut according to claim 2, characterized in that, The inner diameters of the annular gasket (42) and the reinforcing ring (41) are larger than the inner diameter of the nut body (1), and the reinforcing ring (41) is made of high-strength carbon steel.
7. The anti-loosening press riveting nut according to claim 4, characterized in that, The number of the knurled rings (8), the knurled platforms (9) and the knurled teeth (7) is several, and the multiple knurled rings (8), the knurled platforms (9) and the knurled teeth (7) are arranged in a circumferential array on the top of the nut body (1).
8. The anti-loosening press riveting nut according to claim 1, characterized in that, The side view section of the circular boss (5) is Y-shaped, and the internal section of the nut body (1) is a trapezoidal structure.