Nut assembly for fastening
By designing a fastening nut assembly, which uses a threaded connection between the external hexagonal nut body and the fastening washer, the problem of single nuts loosening in a vibration environment is solved, achieving convenient assembly and disassembly and complete functionality.
Patent Information
- Application Number
- CN202520756187.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-21
AI Technical Summary
Traditional single nuts are prone to loosening in vibrating environments, and traditional elastic washers require a secondary installation, which is inconvenient, resulting in poor overall performance.
Design a fastening nut assembly, including an external hexagonal nut body and a fastening washer. The fastening washer has a connecting neck and a slit forming a spring, and a spherical protrusion for elastic locking. The connecting neck and the fastening washer are an integral structure and are connected by a threaded fit.
It enables the coordinated assembly and disassembly of the fastening washer and the external hexagonal nut body. The structure is novel, the assembly and disassembly are convenient, the overall functions are complete, and the practicality is strong.
Smart Images

Figure CN223868362U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fastener technology, and more specifically, to a fastening nut assembly. Background Technology
[0002] After a single nut is tightened, it is prone to loosening if the working environment is one of continuous vibration. Traditionally, a flexible washer is fitted onto the screw connecting the nut to prevent loosening. However, since the flexible washer and nut are often separate parts, a second fitting is required, which is inconvenient and yields poor overall results. Therefore, this invention proposes a nut assembly for fastening. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a fastening nut assembly with novel structure and convenient assembly and disassembly.
[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: This utility model relates to a fastening nut assembly, comprising an external hexagonal nut body with a first threaded hole at its center, a fastening washer at one end of the external hexagonal nut body, a connecting neck at the end of the fastening washer facing the external hexagonal nut body, the connecting neck having external threads, and a second threaded hole coaxially arranged with the first threaded hole at the end of the external hexagonal nut body facing the fastening washer, the diameter of the second threaded hole being larger than the diameter of the first threaded hole, the connecting neck being threadedly connected within the second threaded hole, the depth of the second threaded hole being less than the height of the connecting neck.
[0005] The present invention is further configured such that: the fastening washer has several slits arranged in a ring array around the axis and extending in a straight line in the radial direction, the outer end of the slits is connected to the outside, and a spring piece integral with the fastening washer is formed between two adjacent slits, and a spherical protrusion protruding from the end face is pressed on the spring piece, the spherical protrusion being located at one end of the fastening washer facing away from the body of the external hexagonal nut.
[0006] The present invention is further configured such that the included angle between two adjacent cuts is equal.
[0007] The present invention is further configured such that the connecting neck ring and the fastening washer are an integral structure.
[0008] The present invention is further configured such that the fastening washer is made of stainless steel.
[0009] In summary, the present invention has the following beneficial effects: The fastening nut assembly involved in the present invention has a fastening washer on the nut assembly and the external hexagonal nut body connected by a threaded engagement, so that the fastening washer can be assembled and disassembled in a coordinated manner when assembling the external hexagonal nut body. The structure is novel, the assembly and disassembly are convenient, the overall function is complete, and the practicality is strong. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0011] Figure 2 This is a schematic diagram illustrating the structure of the fastening washer in this utility model. Detailed Implementation
[0012] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.
[0013] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.
[0014] Example 1
[0015] See Figure 1 and Figure 2 As shown, the fastening nut assembly involved in this embodiment includes an external hexagonal nut body 2 with a first threaded hole 1 in the center. One end of the external hexagonal nut body 2 is provided with a fastening washer 3. The end of the fastening washer 3 facing the external hexagonal nut body has a connecting collar 4 with external threads. The end of the external hexagonal nut body 2 facing the fastening washer has a second threaded hole 5 that is coaxial with the first threaded hole. The diameter of the second threaded hole 5 is larger than the diameter of the first threaded hole 1. The connecting collar 4 is threaded into the second threaded hole 5. The depth of the second threaded hole 5 is less than the height of the connecting collar 4.
[0016] Furthermore, the fastening washer 3 has several slits 6 arranged in a ring array around the axis and extending in a straight line in the radial direction. The outer end of the slits 6 is connected to the outside. A spring piece 7 integrated with the fastening washer is formed between two adjacent slits 6. A spherical protrusion 8 protruding from the end face is pressed on the spring piece 7. The spherical protrusion 8 is located at one end of the fastening washer 3 facing away from the hexagonal nut body 2.
[0017] Furthermore, the included angle between two adjacent cuts 6 is equal.
[0018] Furthermore, the connecting collar 4 and the fastening washer 3 are an integral structure.
[0019] Furthermore, the fastening washer 3 is made of stainless steel.
[0020] In this embodiment, the fastening washer 3 is first installed onto the body 2 of the external hexagonal nut, and the connecting collar 4 is threaded into the second threaded hole 5, so that a deformation gap is formed between the fastening washer 3 and the body 2 of the external hexagonal nut. When the body 2 of the external hexagonal nut carries the fastening washer 3, the mounting surface will come into contact with the spherical protrusion 8, causing the spherical protrusion 8 to be squeezed, so that the spring piece 7 is deformed, achieving an elastic locking effect.
[0021] The fastening nut assembly involved in this utility model has a fastening washer on the nut assembly that is threadedly connected to the body of the external hexagonal nut. This allows the fastening washer to be assembled and disassembled in tandem, making the assembly and disassembly of the external hexagonal nut body a novel structure that is easy to assemble and disassemble, with complete overall functions and strong practicality.
[0022] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.
[0023] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A fastening nut assembly, comprising an external hexagonal nut body with a first threaded hole at its center, characterized in that: One end of the external hexagonal nut is provided with a fastening washer, and the end of the fastening washer facing the external hexagonal nut body has a connecting neck ring with external threads. The end of the external hexagonal nut body facing the fastening washer has a second threaded hole that is coaxial with the first threaded hole. The diameter of the second threaded hole is larger than the diameter of the first threaded hole. The connecting neck ring is threaded into the second threaded hole, and the depth of the second threaded hole is less than the height of the connecting neck ring.
2. The fastening nut assembly according to claim 1, characterized in that: The fastening washer has several slits arranged in a ring around the axis and extending in a straight line in the radial direction. The outer end of the slits is connected to the outside. A spring piece is formed between two adjacent slits and is integrated with the fastening washer. A spherical protrusion is pressed on the spring piece and is located at the end of the fastening washer that faces away from the body of the external hexagonal nut.
3. The fastening nut assembly according to claim 2, characterized in that: The included angle between two adjacent cuts is equal.
4. The fastening nut assembly according to any one of claims 1-3, characterized in that: The connecting collar and the fastening washer are an integral structure.
5. The fastening nut assembly according to claim 4, characterized in that: The fastening washer is made of stainless steel.