Forward-installed double-end anti-loosening spring nut assembly
By setting a top-positioning mechanism with a top spring and a positioning ring inside the inner nut, as well as an adsorption mechanism with an adsorption groove and a connecting column, the problem of nut assembly loosening under high-intensity load in the prior art is solved, achieving stable connection and easy use.
Patent Information
- Application Number
- CN202520775609.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-04-23
AI Technical Summary
The existing double-headed anti-loosening spring nut assembly is prone to loosening under high-intensity impact loads and alternating loads, resulting in safety hazards, and it cannot effectively position and restrict the position of the I-beam frame.
The top-positioning mechanism, which uses a top-positioning spring and a positioning ring, combined with the adsorption mechanism of the adsorption groove and the connecting column, increases friction by pushing in the opposite direction through the top-positioning spring inside the inner nut. Stable installation is achieved through the cooperation of the adsorption groove and the connecting column, preventing detachment.
It increases the friction between the inner nut and the bolt, ensuring a stable connection of the components under high-intensity loads, preventing loosening, and providing structural stability and ease of use.
Smart Images

Figure CN223854630U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spring nut technology, specifically to a positive-mounted double-ended anti-loosening spring nut assembly. Background Technology
[0002] Bolt and nut connections are a widely used connection method in the field of mechanical technology. They are mainly used for the installation and fastening of various structures. Generally, during use, when bolts and nuts are subjected to high-intensity impact loads, high-intensity alternating loads, or other working environments, they will gradually loosen and fall off, which may cause significant safety hazards.
[0003] The authorized publication number "CN217603130U" describes "a positive-mounted double-headed anti-loosening spring nut assembly, including a nut body, a limiting mechanism, and a threaded groove. The inner wall of the nut body is welded with a threaded groove, and the limiting mechanism is snap-fitted onto the surface of the threaded groove. The limiting mechanism consists of an I-beam frame and an oil groove. The I-beam frame is snap-fitted onto the surface of the threaded groove, and the I-beam frame has evenly arranged oil grooves on the side near the threaded groove. By snap-fitting the I-beam frame to the side of the threaded groove and opening the oil groove on the side of the I-beam frame, the I-beam frame provides limiting protection for the threaded groove, and the oil groove provides a certain lubrication effect for the threaded groove. By connecting magnet block a and magnet block b with a tension rope, that is, connecting the spring and the nut body, the spring can be connected and fixed, ensuring the limiting effect and the performance of the spring."
[0004] The aforementioned patent connects the I-beam frame to the threaded groove with a snap-fit connection and creates an oil groove on the side of the I-beam frame. The I-beam frame provides limiting protection for the threaded groove, while the oil groove provides lubrication. Magnet blocks a and b are connected by a tension rope, thus connecting the spring and the nut body, which secures the spring and ensures its limiting and performance. However, the patent lacks the ability to position the device during use, affecting stability, and it also lacks the ability to restrict the position of the I-beam frame, impacting its usability. Utility Model Content
[0005] This utility model provides a positive mounting double-headed anti-loosening spring nut assembly. Through the use of the positioning mechanism, the inner nut can be pushed in the opposite direction by the top spring, increasing the friction between the inner nut and the bolt. Furthermore, the top spring is located inside the inner nut to avoid the influence of the external environment. Through the use of the adsorption mechanism, the positioning mechanism can be stably installed on the inner nut to prevent the positioning mechanism from falling off. Moreover, the structure is stable and easy to use.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a double-ended anti-loosening spring nut assembly, comprising:
[0007] An internal nut with internal threads;
[0008] A top positioning mechanism is provided inside the inner nut. The top positioning mechanism includes a top positioning spring and a positioning ring. A movable groove is provided at the bottom of the inner nut. The top positioning spring is fixedly connected to the movable groove, and the positioning ring is fixedly connected to the bottom of the top positioning spring.
[0009] A positioning mechanism, located on the inner nut, is used to limit the position of the inner nut; and
[0010] An adsorption mechanism is provided on the positioning mechanism for adsorption on the inner nut of the positioning mechanism. The adsorption mechanism includes multiple adsorption grooves, multiple connecting columns and multiple opening and closing air passages. The multiple adsorption grooves are all equally spaced on the top of the inner nut. The multiple connecting columns are all provided on the positioning mechanism, and each connecting column is movably inserted into each adsorption groove. Each opening and closing air passage is opened at the bottom of each adsorption groove.
[0011] Furthermore, the positioning mechanism includes:
[0012] Mounting components are located on the inner nut;
[0013] A mating component, mounted on the outer positioning sleeve, is connected to an internal thread; and
[0014] The limiting component is located on the outer positioning sleeve, and the mating component is connected to the inner nut.
[0015] Furthermore, the mounting component includes an outer positioning sleeve and a through hole, the outer positioning sleeve being movably fitted onto the inner nut, and the through hole being opened at the top of the outer positioning sleeve.
[0016] Furthermore, the docking component includes multiple limiting rods and multiple snap-fit grooves. The multiple limiting rods are fixedly connected to the through holes at equal intervals, and the multiple snap-fit grooves are opened at equal intervals in the internal threads. Each limiting rod is movably inserted into each snap-fit groove.
[0017] Furthermore, the limiting component includes multiple mating grooves and multiple mating teeth. The multiple mating grooves are equidistantly opened on the outer surface of the inner nut, and the multiple mating teeth are equidistantly fixedly connected to the outer positioning sleeve. Each mating tooth is movably inserted into each mating groove.
[0018] This utility model provides a positive-mount double-ended anti-loosening spring nut assembly. It has the following beneficial effects:
[0019] (1) The positive double-headed anti-loosening spring nut assembly, through the use of the positioning mechanism, can push the inner nut in the opposite direction by the top spring, increasing the friction between the inner nut and the bolt. Furthermore, the top spring is located inside the inner nut to avoid the influence of the external environment.
[0020] (2) The positive double-headed anti-loosening spring nut assembly can stably install the positioning mechanism on the inner nut through the use of the adsorption mechanism, thus preventing the positioning mechanism from falling off. In addition, the structure is stable and easy to use. Attached Figure Description
[0021] Figure 1 This is an exploded cross-sectional view of the present invention;
[0022] Figure 2 This is an exploded view of the present invention;
[0023] Figure 3 This is a partial sectional view of the present invention;
[0024] Figure 4 This is a perspective view of the present invention.
[0025] In the diagram: 1. Inner nut; 2. Movable groove; 3. Connecting groove; 4. Snap-fit groove; 5. Internal thread; 6. Adsorption groove; 7. Opening and closing air passage; 8. Top spring; 9. Positioning ring; 10. Outer positioning sleeve; 11. Through hole; 12. Limiting rod; 13. Connecting post; 14. Connecting teeth. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0027] Please see Figure 1-4 This utility model provides a technical solution: a positive-mounted double-headed anti-loosening spring nut assembly, comprising:
[0028] An inner nut 1 with internal threads 5 is provided inside;
[0029] The top positioning mechanism is located inside the inner nut 1. The top positioning mechanism includes a top positioning spring 8 and a positioning ring 9. The bottom of the inner nut 1 has a movable groove 2. The top positioning spring 8 is fixedly connected to the movable groove 2, and the positioning ring 9 is fixedly connected to the bottom of the top positioning spring 8.
[0030] A positioning mechanism, disposed on the inner nut 1, is used to limit the position of the inner nut 1; and
[0031] An adsorption mechanism is provided on the positioning mechanism and is used to position the adsorption mechanism on the inner nut 1. The adsorption mechanism includes multiple adsorption grooves 6, multiple connecting posts 13 and multiple opening and closing air passages 7. The multiple adsorption grooves 6 are all equally spaced on the top of the inner nut 1. The multiple connecting posts 13 are all provided on the positioning mechanism, and each connecting post 13 is movably inserted into each adsorption groove 6. Each opening and closing air passage 7 is opened at the bottom of each adsorption groove 6.
[0032] In this implementation scheme: the internal thread 5 and the internal nut 1 are integrated to form a nut structure. The top spring 8 is inside the internal nut 1 to control the position of the positioning ring 9 and complete the top position of the internal nut 1. The connecting column 13 is movably inserted into the adsorption groove 6. Through tight fit, adsorption is completed and positioning is achieved. Furthermore, the extension and retraction of the connecting column 13 in the adsorption groove 6 is completed by controlling the opening and closing of the air passage 7.
[0033] Specifically, the positioning agencies include:
[0034] The mounting component is located on the inner nut 1;
[0035] A mating component is mounted on the outer positioning sleeve 10, and the mating component is connected to the internal thread 5; and
[0036] The limiting component is located on the outer positioning sleeve 10, and the mating component is connected to the inner nut 1.
[0037] In this embodiment, the mounting component, docking component, and limiting component cooperate with each other to complete the positioning of the inner nut 1.
[0038] Specifically, the mounting components include an outer positioning sleeve 10 and a through hole 11. The outer positioning sleeve 10 is movably fitted onto the inner nut 1, and the through hole 11 is opened at the top of the outer positioning sleeve 10.
[0039] In this embodiment, the outer positioning sleeve 10 wraps around the inner nut 1 to ensure the stability of the internal structure.
[0040] Specifically, the docking component includes multiple limiting rods 12 and multiple snap-fit grooves 4. The multiple limiting rods 12 are fixedly connected to the through holes 11 at equal intervals, and the multiple snap-fit grooves 4 are opened in the internal threads 5 at equal intervals. Each limiting rod 12 is movably inserted into each snap-fit groove 4.
[0041] In this embodiment, multiple limiting rods 12 and multiple snap-fit slots 4 cooperate one by one to complete the overall installation and prevent rotation.
[0042] Specifically, the limiting component includes multiple mating grooves 3 and multiple mating teeth 14. The multiple mating grooves 3 are equidistantly opened on the outer surface of the inner nut 1, and the multiple mating teeth 14 are equidistantly fixedly connected to the outer positioning sleeve 10. Each mating tooth 14 is movably inserted into each mating groove 3.
[0043] In this embodiment, multiple docking grooves 3 and multiple docking teeth 14 cooperate with each other to complete the overall use.
[0044] In use, the inner nut 1 engages with the bolt through the inner thread 5 to lock it in place. After that, the top spring 8 and the positioning ring 9 push the inner nut 1 in the opposite direction, so that the inner thread 5 is squeezed against the thread on the bolt to increase stability. After that, the outer positioning sleeve 10 is put on the inner nut 1 and is connected to the snap-fit groove 4 through the limiting rod 12 to prevent the bolt from rotating. At the same time, the connecting column 13 enters the adsorption groove 6 for adsorption to ensure the overall stability.
[0045] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.
[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A double-ended lock washer nut assembly, characterized in that, include: An inner nut (1) with internal threads (5); The top positioning mechanism is located inside the inner nut (1). The top positioning mechanism includes a top positioning spring (8) and a positioning ring (9). The bottom of the inner nut (1) has a movable groove (2). The top positioning spring (8) is fixedly connected to the movable groove (2). The positioning ring (9) is fixedly connected to the bottom of the top positioning spring (8). A positioning mechanism is provided on the inner nut (1) to limit the position of the inner nut (1); as well as An adsorption mechanism is provided on the positioning mechanism for adsorption on the inner nut (1) of the positioning mechanism. The adsorption mechanism includes multiple adsorption grooves (6), multiple connecting columns (13) and multiple opening and closing air passages (7). The multiple adsorption grooves (6) are all equidistantly opened on the top of the inner nut (1). The multiple connecting columns (13) are all provided on the positioning mechanism, and each connecting column (13) is movably inserted into each adsorption groove (6). Each opening and closing air passage (7) is opened at the bottom of each adsorption groove (6).
2. The uplock double-end lock spring nut assembly of claim 1, wherein, The positioning mechanism includes: Mounting components are provided on the inner nut (1); A mating component is provided on the outer positioning sleeve (10), and the mating component is connected to the internal thread (5); and The limiting component is located on the outer positioning sleeve (10), and the mating component is connected to the inner nut (1).
3. The uplock double-shouldered captive nut assembly of claim 2, wherein, The mounting component includes an outer positioning sleeve (10) and a through hole (11). The outer positioning sleeve (10) is movably fitted onto the inner nut (1), and the through hole (11) is opened at the top of the outer positioning sleeve (10).
4. The uplock double-shouldered captive nut assembly of claim 3, wherein, The docking component includes multiple limiting rods (12) and multiple snap-fit grooves (4). The multiple limiting rods (12) are fixedly connected to the through hole (11) at equal intervals, and the multiple snap-fit grooves (4) are opened in the internal thread (5) at equal intervals. Each limiting rod (12) is movably inserted into each snap-fit groove (4).
5. The uplock double-shouldered captive nut assembly of claim 4, wherein, The limiting component includes multiple docking grooves (3) and multiple docking teeth (14). The multiple docking grooves (3) are equidistantly opened on the outer surface of the inner nut (1), and the multiple docking teeth (14) are equidistantly fixedly connected to the outer positioning sleeve (10), and each docking tooth (14) is movably inserted into each docking groove (3).
Citation Information
Patent Citations
Forward-installed double-end anti-loosening spring nut assembly
CN217603130U