An integrated washer nut
By designing an integrated nut with a sliding mounting block, galvanized protective layer, and fastening ring assembly, the problems of bolt rusting and vibration resistance are solved, achieving nut sealing protection and multi-point engagement, thus improving service life and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YINGTAN FUZHONG HARDWARE PROD (GRP) CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-05-26
AI Technical Summary
When existing nuts are used to fasten bolts, the bolt ends are prone to rusting, which affects disassembly. They also cannot effectively protect longer bolts and have poor vibration resistance.
An integrated washer nut was designed, comprising a sliding mounting block and a locking block structure, a galvanized protective layer, a fastening ring assembly, and a guide groove, to achieve sealing protection and multi-point engagement, and enhance corrosion resistance and vibration resistance.
It effectively prevents external dust and liquid from entering, extends service life, enhances the corrosion resistance and vibration resistance of the nut, prevents the nut from loosening and rusting, and improves reliability.
Smart Images

Figure CN224283183U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nuts and bolts, and in particular to a washer-integrated nut. Background Technology
[0002] Nuts are fasteners with internal threads that are used to mate with bolts. The working principle of nuts is to self-lock by the friction between the nut and the bolt. They are mainly used to facilitate the disassembly and assembly of parts. Nuts are designed and classified in different ways according to their use and function. Each type of nut has different specifications, and each type of nut has different mechanical properties and functions.
[0003] However, existing nuts expose one end of the bolt when used with bolts, causing the bolt to rust and affecting subsequent disassembly. Nuts with protective caps cannot be used with longer bolts, and nuts with only washers are not effective at resisting the reverse force during vibration. Therefore, a nut with an integrated washer is proposed to solve the above problems. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides an integrated washer nut, which aims to improve the problem that the nut in the prior art cannot protect the screw, affecting its service life and subsequent disassembly.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An integrated washer nut includes a body with a threaded groove inside, a protective component installed on the top of the body, a connecting block fixedly connected to the bottom of the body, a washer fixedly connected to the bottom of the connecting block, and a fastening component provided inside the body.
[0007] The protective component includes two mounting blocks, which are slidably connected to the top of the main body. A protective block is fixedly connected to the top of the two mounting blocks. Two sliding grooves are opened on the top of the main body. A slot is opened on one side of each of the two sliding grooves. A locking block is fixedly connected to one side of each of the two mounting blocks. The two mounting blocks are slidably connected inside the two sliding grooves, and the two locking blocks are locked inside the two slots.
[0008] As a further description of the above technical solution:
[0009] The fastening assembly includes a first fastening ring, which is fixedly connected to the bottom of the threaded groove, and a second fastening ring is fixedly connected to the top of the threaded groove.
[0010] As a further description of the above technical solution:
[0011] Multiple weight-reducing grooves are provided on the outer side of the main body, and the weight-reducing grooves are arranged in a ring around the main body.
[0012] As a further description of the above technical solution:
[0013] The bottom of the pad is provided with multiple anti-slip grooves, which are arranged in a ring.
[0014] As a further description of the above technical solution:
[0015] The gasket has multiple flow channels on its outer surface, and the multiple flow channels are arranged in a ring.
[0016] As a further description of the above technical solution:
[0017] The top of the protective block is fixedly connected to a dome, and the interior of the dome is hollow.
[0018] As a further description of the above technical solution:
[0019] The outer side of the main body is provided with a protective layer, which is a galvanized layer.
[0020] This utility model has the following beneficial effects:
[0021] 1. In this utility model, the sliding mounting block and the locking block work together to allow the protective block to be quickly installed and removed, forming a top sealing barrier that effectively prevents external dust and liquids from entering the thread groove. Combined with a galvanized protective layer, this improves the overall corrosion resistance of the nut and extends its service life.
[0022] 2. In this utility model, the two fastening rings at the upper and lower ends of the threaded groove generate radial pressure through elastic deformation, forming a multi-point engagement with the bolt thread. In a vibration environment, the loosening torque can be attenuated to prevent the nut from falling off. At the same time, the annular anti-slip groove at the bottom of the gasket increases the coefficient of friction through a micro-serrated structure, while the guide groove can quickly drain the liquid from the contact surface to prevent the water film from reducing the fastening effect. Attached Figure Description
[0023] Figure 1 This is a three-dimensional schematic diagram of an integrated washer nut proposed in this utility model;
[0024] Figure 2 This is a schematic diagram of the gasket structure of an integrated washer nut proposed in this utility model;
[0025] Figure 3 This is a schematic diagram of the structure of the protective block for an integrated washer nut proposed in this utility model;
[0026] Figure 4 This is a schematic diagram of the mounting block for an integrated washer nut proposed in this utility model;
[0027] Figure 5This is a schematic diagram of the slot structure of an integrated washer nut proposed in this utility model;
[0028] Figure 6 This is a schematic diagram of the protective layer structure of an integrated washer nut proposed in this utility model.
[0029] Legend:
[0030] 1. Main body; 2. Protective block; 3. Connecting block; 4. Gasket; 5. Dome; 6. Weight reduction groove; 7. Flow guide groove; 8. Fastening ring one; 9. Threaded groove; 10. Anti-slip groove; 11. Fastening ring two; 12. Mounting block; 13. Locking block; 14. Sliding groove; 15. Locking groove; 16. Protective layer. Detailed Implementation
[0031] 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.
[0032] Reference Figure 1 , Figure 4 and Figure 5 The present invention provides an embodiment of an integrated washer nut, comprising a main body 1, a threaded groove 9 inside the main body 1, the main body 1 being processed by cold forging, the internal threaded groove 9 being provided, a protective component being installed on the top of the main body 1, a connecting block 3 being fixedly connected to the bottom of the main body 1, a washer 4 being fixedly connected to the bottom of the connecting block 3, the connecting block 3 being integrally forged with the bottom of the main body 1, the washer 4 being fixedly welded to the lower end of the connecting block 3, the washer 4 being made of stainless steel and also being galvanized on the outside, and a fastening component being provided inside the main body 1;
[0033] The protective component includes two mounting blocks 12, which are slidably connected to the top of the main body 1. A protective block 2 is fixedly connected to the top of the two mounting blocks 12. Two sliding grooves 14 are opened on the top of the main body 1, and a slot 15 is opened on one side of each sliding groove 14. A locking block 13 is fixedly connected to one side of each mounting block 12. The two mounting blocks 12 are slidably connected inside the two sliding grooves 14, and the two locking blocks 13 are locked inside the two slots 15. The mounting blocks 12 are slidably embedded in the sliding grooves 14 on the top of the main body 1. The locking blocks 13 are made of flexible material and can be deformed by extrusion within a certain range to fix them to the slots 15. A dome 5 is fixedly connected to the top of the protective block 2. The dome 5 has a hollow interior. The protective block 2 is injection molded to protect the main body 1 from external dust. The hollow cavity inside the dome 5 provides space for screw installation. The protective component protects the screw after installation, effectively preventing external dust and sewage from entering the screw and improving the screw's service life.
[0034] Reference Figure 2 , Figure 3 and Figure 6 The fastening assembly includes a first fastening ring 8, which is fixedly connected to the bottom of the threaded groove 9. A second fastening ring 11 is fixedly connected to the top of the threaded groove 9. Fastening rings are set at the upper and lower ends of the threaded groove 9 inside the main body 1 of the nut. The fastening rings 8 and 11 prevent the nut from slipping after it is fixed to the screw, thus avoiding the nut from slipping and affecting the fastening effect and strength. A protective layer 16 is set on the outside of the main body 1. The protective layer 16 is a galvanized layer. The galvanized layer increases the protective strength on the entire outside of the nut. The fastening assembly is set inside the nut. The two fastening rings prevent the nut from twisting in the opposite direction under vibration when it is fixed with the screw, which would reduce the fixing strength.
[0035] Reference Figures 1-3 Multiple weight-reducing grooves 6 are provided on the outer side of the main body 1. The weight-reducing grooves 6 are arranged in a ring around the main body 1. Multiple sets of weight-reducing grooves 6 are arranged in a ring. By controlling the depth and width of a single groove, the weight of the nut can be reduced. Multiple anti-slip grooves 10 are provided on the bottom of the gasket 4. The multiple anti-slip grooves 10 are arranged in a ring. The anti-slip grooves 10 have a V-shaped cross section. The inside of the groove is sandblasted to increase friction and prevent loosening. Multiple flow-guiding grooves 7 are provided on the outer side of the gasket 4. The multiple flow-guiding grooves 7 are arranged in a ring. The flow-guiding grooves 7 allow external water to flow away quickly and prevent the nut from rusting.
[0036] Working principle: First, the mounting block 12 slides along the sliding groove 14, and the mounting block 12 drives the protective block 2 to move. The protective block 2 is fixed by the snap-fit between the locking block 13 and the locking groove 15. The protective block 2 seals one end of the main body 1, forming a top sealing barrier to protect the bolts inside. The hollow dome 5 design can increase the installation space, allowing longer screws to be located inside the dome 5 for protection. At the same time, the galvanized protective layer 16 enhances corrosion resistance, improves the strength of the nuts, and extends the service life.
[0037] Secondly, when the nut is installed on the bolt, the fastening rings 11 and 8 at the top and bottom of the thread groove 9 form a bidirectional engagement with the bolt thread through radial elastic deformation, suppressing loosening caused by vibration. At the same time, the weight reduction groove 6 reduces the weight of the nut, the guide groove 7 accelerates the discharge of liquid and avoids long-term liquid residue that could cause the nut to rust, and the anti-slip groove 10 increases the friction coefficient between the washer 4 and the workpiece through a micro-serrated structure. The anti-slip groove 10 on the washer 4 and the two fastening rings enhance the resistance to vibration and prevent the nut from loosening.
[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A washer-integrated nut comprising a main body (1), characterized by: The main body (1) has a threaded groove (9) inside, a protective component is installed on the top of the main body (1), a connecting block (3) is fixedly connected to the bottom of the main body (1), a gasket (4) is fixedly connected to the bottom of the connecting block (3), and a fastening component is provided inside the main body (1). The protective component includes two mounting blocks (12), which are slidably connected to the top of the main body (1). A protective block (2) is fixedly connected to the top of the two mounting blocks (12). Two sliding grooves (14) are opened on the top of the main body (1). A slot (15) is opened on one side of each of the two sliding grooves (14). A locking block (13) is fixedly connected to one side of each of the two mounting blocks (12). The two mounting blocks (12) are slidably connected inside the two sliding grooves (14), and the two locking blocks (13) are locked inside the two slots (15).
2. The washer-integrated nut according to claim 1, characterized in that: The fastening assembly includes a fastening ring one (8), which is fixedly connected to the bottom of the threaded groove (9), and a fastening ring two (11) is fixedly connected to the top of the threaded groove (9).
3. The washer-integrated nut according to claim 1, characterized in that: Multiple weight-reducing grooves (6) are provided on the outer side of the main body (1), and the weight-reducing grooves (6) are arranged in a ring around the main body (1).
4. The washer-integrated nut according to claim 3, characterized in that: The bottom of the pad (4) is provided with multiple anti-slip grooves (10), and the multiple anti-slip grooves (10) are arranged in a ring.
5. The washer-integrated nut according to claim 4, characterized in that: The gasket (4) has multiple guide grooves (7) on its outside, and the multiple guide grooves (7) are arranged in a ring.
6. The washer-integrated nut according to claim 1, characterized in that: The top of the protective block (2) is fixedly connected to a dome (5), and the interior of the dome (5) is hollow.
7. The washer-integrated nut according to claim 1, characterized in that: The outer side of the main body (1) is provided with a protective layer (16), which is a galvanized layer.