Check bolt combined part
By incorporating anti-loosening washers and rubber ring structures into bolt assembly components, the bolts are prevented from loosening by utilizing elastic components and friction, thus solving the problem of bolts loosening under vibration and achieving stability and reliability of bolted connections.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-28
- Publication Date
- 2026-03-06
AI Technical Summary
The existing bolts are prone to loosening under machine vibration, leading to connection failure.
The structure employs anti-loosening washers and rubber rings to prevent bolts from loosening through elastic components and friction, including anti-loosening mechanisms at the nuts and bolts.
It effectively prevents bolts from loosening under vibration conditions, improving the stability and reliability of the connection.
Smart Images

Figure CN223975397U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bolts, specifically relating to an anti-loosening bolt assembly. Background Technology
[0002] Fasteners are a type of mechanical part used for fastening connections and are extremely widely used. Various types of fasteners can be found on all kinds of machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, meters and supplies. They are the most widely used basic mechanical components.
[0003] A bolt is a cylindrical threaded fastener used with a nut. It consists of a nut and a shank (a cylinder with external threads), and is used to fasten two parts with through holes. This type of connection is called a bolted connection. Since the two parts can be separated by unscrewing the nut, a bolted connection is a detachable connection.
[0004] The authorized publication number "CN211314814U" describes "an anti-slip bolt structure, including a bolt head, the bottom of which is mechanically connected to a screw, the surface of which is plasma-sprayed with a silicon carbide wear-resistant coating, and the surface of which, on the side away from the screw, is plasma-sprayed with a stainless steel wear-resistant coating. This invention achieves wear resistance by plasma-spraying a stainless steel wear-resistant coating onto the surface of the silicon carbide wear-resistant coating, a nano-fluorosilicone anti-corrosion coating onto the surface of the stainless steel wear-resistant coating, a polymer ceramic coating layer onto the surface of the nano-fluorosilicone anti-corrosion coating, and a chromium carbide wear-resistant composite coating layer onto the surface of the polymer ceramic coating, on the side away from the nano-fluorosilicone anti-corrosion coating."
[0005] The aforementioned patents provide wear resistance, but they are not easy to prevent loosening. This is because vibrations occur during machine operation, and prolonged vibrations can cause bolts to loosen, leading to machine damage. Utility Model Content
[0006] The purpose of this utility model is to provide an anti-loosening bolt assembly, which aims to solve the problem that bolts are not easy to prevent from loosening in the prior art, and that the vibration generated during machine operation can cause bolts to loosen over a long period of time.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] An anti-loosening bolt assembly includes:
[0009] Nut;
[0010] A threaded rod, which is fixedly connected to one end of a nut;
[0011] A nut, whose threads are connected to a threaded rod;
[0012] The first anti-loosening mechanism is located on the nut;
[0013] The second anti-loosening mechanism is located on the threaded rod.
[0014] As a preferred embodiment of this utility model, the first anti-loosening mechanism includes:
[0015] The elastic component is provided in three sets, and all three sets of the elastic component are provided on the nut;
[0016] Anti-loosening washer A is provided on three sets of elastic components, and the anti-loosening washer A is movably sleeved on the threaded rod.
[0017] As a preferred embodiment of this utility model, each set of elastic components includes a mounting groove B, a spring, and a connecting block. The mounting groove B is opened at one end of the nut, the connecting block is movably inserted into the mounting groove B, and the spring is fixedly connected between the connecting block and one inner wall of the mounting groove B.
[0018] As a preferred embodiment of this utility model, the second anti-loosening mechanism includes an anti-loosening washer B, a rubber ring, and a mounting groove A. The mounting groove A is opened at one end of the nut, the rubber ring is fixedly connected in the mounting groove A, and the anti-loosening washer B is movably sleeved on the threaded rod, with the anti-loosening washer B located between the rubber ring and the anti-loosening washer A.
[0019] In a preferred embodiment of this utility model, the anti-loosening washer A is fixedly connected to the same side of the three connecting blocks.
[0020] In a preferred embodiment of this utility model, the teeth of the anti-loosening washer A and the anti-loosening washer B are opposite in direction.
[0021] Compared with the prior art, the beneficial effects of this utility model are:
[0022] 1. In this solution, the mounting groove B is used to connect the spring and the connecting block. The connecting block is movably inserted into the mounting groove B, allowing it to slide within the groove. The movement of the connecting block compresses the spring, and the spring's elasticity holds the connecting block and the anti-loosening washer A in place, causing the anti-loosening washer A to be close to the fixed object, thus preventing the nut and threaded rod from loosening. The anti-loosening washer A prevents the nut and threaded rod from loosening.
[0023] 2. In this solution, the anti-loosening washer B is used to fit close to the fixed object to prevent the nut from loosening, and the rubber ring can increase the friction to prevent the nut from loosening after tightening. Attached Figure Description
[0024] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0026] Figure 2 This is a cross-sectional view of the present invention;
[0027] Figure 3 This utility model Figure 2 Enlarged view of point B in the middle;
[0028] Figure 4 This is an exploded view of the rubber ring of this utility model.
[0029] In the diagram: 1. Nut; 2. Anti-loosening washer A; 3. Threaded rod; 4. Anti-loosening washer B; 5. Nut; 6. Rubber ring; 7. Mounting groove A; 8. Mounting groove B; 9. Spring; 10. Connecting block. Detailed Implementation
[0030] 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.
[0031] Example 1
[0032] Please see Figures 1-4 The technical solution provided in this embodiment is as follows:
[0033] An anti-loosening bolt assembly is composed of a nut 1, a threaded rod 3, a nut 5, a first anti-loosening mechanism, and a second anti-loosening mechanism. The threaded rod 3 is fixedly connected to one end of the nut 1, and the nut 5 is threadedly connected to the threaded rod 3.
[0034] In a specific embodiment of this utility model, the nut 1 and the threaded rod 3 are integrally formed structures, and the nut 5 is threadedly connected to the threaded rod 3, so that the nut 5 can be removed from the threaded rod 3.
[0035] Specifically, there are three sets of elastic components, all of which are located on the nut 1. Each set of elastic components includes a mounting groove B8, a spring 9, and a connecting block 10. The mounting groove B8 is located at one end of the nut 1. The connecting block 10 is movably inserted into the mounting groove B8. The spring 9 is fixedly connected between the connecting block 10 and the inner wall of one side of the mounting groove B8.
[0036] In a specific embodiment of this utility model, the mounting groove B8 is used to connect the spring 9 and the connecting block 10. The connecting block 10 is movably inserted into the mounting groove B8, allowing it to slide within the groove. The movement of the connecting block 10 compresses the spring 9, and the elastic force of the spring 9 presses against the connecting block 10 and the anti-loosening washer A2, causing the anti-loosening washer A2 to be close to the fixed object, thereby preventing the nut 1 and the threaded rod 3 from becoming loose.
[0037] Specifically, the anti-loosening washer A2 is installed on the three sets of elastic components, and the anti-loosening washer A2 is movably sleeved on the threaded rod 3.
[0038] In a specific embodiment of this utility model, the anti-loosening washer A2 can prevent the nut 1 and the threaded rod 3 from becoming loose.
[0039] Specifically, the second anti-loosening mechanism is provided on the threaded rod 3. The second anti-loosening mechanism includes an anti-loosening washer B4, a rubber ring 6, and a mounting groove A7. The mounting groove A7 is opened at one end of the nut 5. The rubber ring 6 is fixedly connected in the mounting groove A7. The anti-loosening washer B4 is movably sleeved on the threaded rod 3, and the anti-loosening washer B4 is located between the rubber ring 6 and the anti-loosening washer A2.
[0040] In a specific embodiment of this utility model, the anti-loosening washer B4 is used to be close to the fixed object to prevent the nut 5 from loosening, and the rubber ring 6 can increase the friction to prevent the nut 5 from loosening after being tightened.
[0041] Specifically, the anti-loosening washer A2 is fixedly connected to the same side end of the three connecting blocks 10.
[0042] In a specific embodiment of this utility model, the anti-loosening washer A2 is fixedly connected to the same side end of the three connecting blocks 10.
[0043] Specifically, the teeth of anti-loosening washer A2 and anti-loosening washer B4 are aligned.
[0044] In a specific embodiment of this utility model, the teeth of the anti-loosening washer A2 and the anti-loosening washer B4 are aligned.
[0045] The working principle or process of the anti-loosening bolt assembly provided by this utility model is as follows: The mounting groove B8 is used to connect the spring 9 and the connecting block 10. The connecting block 10 is movably inserted into the mounting groove B8, allowing it to slide within the groove. The movement of the connecting block 10 compresses the spring 9, and the elastic force of the spring 9 presses against the connecting block 10 and the anti-loosening washer A2, causing the anti-loosening washer A2 to be close to the fixed object, thereby preventing the nut 1 and the threaded rod 3 from loosening. The anti-loosening washer A2 prevents the nut 1 and the threaded rod 3 from loosening. The anti-loosening washer B4 is used to be close to the fixed object to prevent the nut 5 from loosening. The rubber ring 6 increases the friction, preventing the nut 5 from loosening after tightening.
[0046] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.
Claims
1. A lock bolt assembly characterized by, The utility model relates to a nut (1), a threaded rod (3) fixedly connected to one end of the nut (1), a nut (5) threadedly connected to the threaded rod (3), a first anti-loosening mechanism arranged on the nut (1), and a second anti-loosening mechanism arranged on the threaded rod (3). The first anti-loosening mechanism comprises three sets of elastic components, each set of the elastic components being arranged on the nut (1), an anti-loosening washer A (2) arranged on the three sets of elastic components, the anti-loosening washer A (2) movably sleeving the threaded rod (3), each set of the elastic components comprising a mounting groove B (8), a spring (9), and a connecting block (10), the mounting groove B (8) being formed at one end of the nut (1), the connecting block (10) movably inserted into the mounting groove B (8), and the spring (9) fixedly connected between the connecting block (10) and an inner wall of one side of the mounting groove B (8), the second anti-loosening mechanism comprising an anti-loosening washer B (4), a rubber ring (6), and a mounting groove A (7), the mounting groove A (7) being formed at one end of the nut (5), the rubber ring (6) fixedly connected into the mounting groove A (7), the anti-loosening washer B (4) movably sleeving the threaded rod (3), and the anti-loosening washer B (4) located between the rubber ring (6) and the anti-loosening washer A (2), the anti-loosening washer A (2) fixedly connected to the same side end of the three connecting blocks (10), and the teeth of the anti-loosening washer A (2) and the anti-loosening washer B (4) being opposite to each other. 2. A captive bolt assembly according to claim 1, wherein:
Citation Information
Patent Citations
Anti-sliding bolt structure
CN211314814U