Anti-vibration permanent locking fastener

Abstract

The utility model discloses an anti -vibration permanent anti -loose fastener relates to fastener technical field, including main screw rod, the top of the top nut is provided to the top of main screw rod, the outer surface detachable mounting of main screw rod has movable nut, the bottom detachable mounting of main screw rod has auxiliary screw rod, the bottom outer surface of auxiliary screw rod is provided with the locating block, the outer surface of locating block is provided with the rotary ring, the top equidistance annular of rotary ring is provided with a plurality of telescopic links, a plurality of telescopic link top end is connected in movable nut's bottom end in common, a plurality of telescopic link movable nut and rotary ring between the outside are connected with first spring in common. The utility model discloses through being provided with a series of structures, make movable nut and the small gap of main screw rod connecting position place be pulled or extrude, make the gap reduce, improve the anti -loose tight effect, and telescopic link and first spring cooperation use, make movable nut can absorb part vibration, avoid fastener and produce loose.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, specifically to a vibration-resistant permanent anti-loosening fastener. Background Technology

[0002] Fasteners play a crucial role in mechanical design, especially in applications that need to withstand vibration, temperature changes, or other external forces. To ensure the reliability and safety of fasteners, it is particularly important to adopt appropriate anti-loosening technology.

[0003] Most permanent anti-loosening fasteners are currently cylindrical threaded fasteners consisting of bolts and nuts. They are a type of fastener composed of a head and a threaded cylinder. They need to be used with a nut. Since there may be a certain gap at the connection between the screw and the nut, the fastener may loosen due to equipment vibration during use, which will affect the tightness of the anti-loosening fastener connection. Utility Model Content

[0004] The purpose of this invention is to provide a vibration-resistant, permanent, and anti-loosening fastener to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vibration-resistant permanent anti-loosening fastener, comprising a main screw, a top nut at the top of the main screw, a movable nut detachably mounted on the outer surface of the main screw, a secondary screw detachably mounted at the bottom of the main screw, a positioning block on the bottom outer surface of the secondary screw, a rotating ring on the outer surface of the positioning block, and a plurality of telescopic rods equidistantly arranged in a ring on the top of the rotating ring, the top ends of the plurality of telescopic rods being connected together to the bottom end of the movable nut, and the plurality of telescopic rods being connected together to the bottom end of the movable nut. A first spring connects the external movable nut of the retractable rod to the rotating ring. A reinforcing post is provided at the top of the auxiliary screw. The reinforcing post is a hollow cylindrical component with an open top. A second spring is provided at the bottom of the reinforcing post. A through cavity is provided at the middle position of the main screw and the top nut. The top of the reinforcing post extends out of the through cavity. An insert post is inserted into the extended end of the reinforcing post. A top cover is provided at the top of the insert post. Several buckles are arranged at the bottom edge of the top cover. Several retaining rings are arranged vertically inside the through cavity.

[0006] Preferably, the bottom end of the auxiliary screw is provided with a bottom nut, which is used to assist in torsion of the auxiliary screw, making it easier for the auxiliary screw to be connected to the main screw and reducing the difficulty of installing permanent anti-loosening fasteners.

[0007] Preferably, the top end of the outer bottom nut of the telescopic rod is provided with a telescopic sleeve, and the top end of the telescopic sleeve is rotatably connected to the bottom end of the movable nut. The telescopic sleeve protects the telescopic rod and the first spring, reducing the oxidation rate of the telescopic rod and the first spring during long-term use and improving the service life of the permanent anti-loosening fastener.

[0008] Preferably, the main screw below the through cavity has an internal thread that matches the auxiliary screw. When the auxiliary screw is installed at the bottom of the main screw, the auxiliary screw and the internal thread work together to allow the auxiliary screw to be tightly installed inside the main screw.

[0009] Preferably, the bottom of the buckle matches the retaining ring. When the buckle is moved inside the cavity by the insert post, the bottom of the buckle is squeezed and contracted by the retaining ring, and the top of the buckle is locked by the retaining ring located above, thus limiting the buckle.

[0010] Preferably, the interior of the reinforcing column matches the insert column, and the bottom of the insert column contacts the second spring. When the insert column moves downward inside the reinforcing column, the second spring is compressed, and an upward thrust is applied to the insert column. When the upward thrust pushes the insert column, the top of the buckle will be tightly attached to the corresponding retaining ring, so that the buckle provides an upward pull on the main screw, thereby pulling and reducing the small gap at the threaded connection between the main screw and the auxiliary screw.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This vibration-resistant permanent anti-loosening fastener works by using a main screw and a movable nut. The bottom of the main screw can be threaded to a secondary screw, which is connected to the movable nut via several telescopic rods and a first spring. When using the fastener, the main screw provides auxiliary support to the movable screw through the telescopic rods and the first spring, and applies upward or downward force. This pulls or compresses the small gap at the connection between the movable nut and the main screw, reducing the gap and improving the anti-loosening effect. Furthermore, the telescopic rods and the first spring work together to allow the movable nut to absorb some vibration, preventing the fastener from loosening.

[0013] This vibration-resistant permanent anti-loosening fastener uses a combination of a snap-fit ​​and a retaining ring inside the through-cavity to reinforce the main screw, thereby pulling the gap between the main screw and the auxiliary screw and further improving the anti-loosening effect of the fastener. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional schematic diagram of the main screw structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the buckle structure of this utility model;

[0017] Figure 4 This is a cross-sectional schematic diagram of the auxiliary screw structure of this utility model.

[0018] In the diagram: 1. Main screw; 2. Top nut; 3. Top cover; 4. Movable nut; 5. Telescopic sleeve; 6. Bottom nut; 7. First spring; 8. Telescopic rod; 9. Rotating ring; 10. Positioning block; 11. Secondary screw; 12. Reinforcing column; 13. Through cavity; 14. Internal thread; 15. Snap ring; 16. Snap fastener; 17. Insert post; 18. Second spring. Detailed Implementation

[0019] 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.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] like Figures 1 to 4As shown, the vibration-resistant permanent anti-loosening fastener of this embodiment includes a main screw 1. A top nut 2 is provided at the top of the main screw 1 to assist in the rotation of the main screw 1, making it easy to rotate. A movable nut 4 is detachably installed on the outer surface of the main screw 1. When fixing materials, the main screw 1 passes through the material to be fixed, and then the movable nut 4 is installed at the through-extension end of the main screw 1 to tighten the material. A secondary screw 11 is detachably installed at the bottom of the main screw 1. A positioning block 10 is provided on the outer surface of the bottom of the secondary screw 11, and a rotating ring 9 is provided on the outer surface of the positioning block 10. Several telescopic rods 8 are arranged in a ring at equal intervals at the top. The top ends of the telescopic rods 8 are connected to the bottom end of the movable nut 4. A first spring 7 is connected between the movable nut 4 and the rotating ring 9 on the outside of the telescopic rods 8. When the auxiliary screw 11 is installed at the bottom of the main screw 1, the movable nut 4 is in contact with the bottom end of the main screw 1. When the auxiliary screw 11 is twisted, the telescopic rods 8 and the first spring 7 are squeezed. After the auxiliary screw 11 is tightened, the movable nut 4 is twisted to install it on the outer surface of the main screw 1 until the top end of the movable nut 4 clamps the material with the bottom end of the top nut 2. At this time, the telescopic rods 8 and the first spring 7 are stretched or pulled up. The compression causes the movable nut 4 to receive an upward thrust or downward pull, compressing the gap between the movable nut 4 and the threaded groove on the outer surface of the main screw 1, reducing the gap. Simultaneously, the vibration experienced by the movable nut 4 during use is absorbed by the telescopic rod 8 and the first spring 7, providing a certain degree of vibration resistance and preventing the fastener from loosening. A reinforcing post 12 is provided at the top of the auxiliary screw 11. The reinforcing post 12 is a hollow cylindrical component with an open top. A second spring 18 is provided at the bottom of the reinforcing post 12. A through cavity 13 is formed between the main screw 1 and the top nut 2. The top of the reinforcing post 12... The main screw 12 extends into a through cavity 13. A plug 17 is inserted into the extended end of the reinforcing column 12. A top cover 3 is provided at the top of the plug 17. Several buckles 16 are arranged at the bottom edge of the top cover 3. Several retaining rings 15 are arranged vertically inside the through cavity 13. After the main screw 1 and the auxiliary screw 11 are tightly installed, a top nut 2 extends from the top of the reinforcing column 12. Then, the plug 17 is inserted into the extended end of the reinforcing column 12, so that the buckles 16 are located outside the reinforcing column 12 and extend into the through cavity 13. The buckles 16 cooperate with the retaining rings 15 inside the through cavity 13 to lock the buckles 16 and reinforce the main screw 1.

[0022] Specifically, a bottom nut 6 is provided at the bottom end of the auxiliary screw 11. The bottom nut 6 is used to assist in torsion of the auxiliary screw 11, making it easier for the auxiliary screw 11 to connect with the main screw 1 and reducing the difficulty of installing permanent anti-loosening fasteners.

[0023] Furthermore, a telescopic sleeve 5 is provided at the top of the outer bottom nut 6 of the telescopic rod 8, and the top of the telescopic sleeve 5 is rotatably connected to the bottom of the movable nut 4. The telescopic sleeve protects the telescopic rod 8 and the first spring 7, reducing the oxidation rate of the telescopic rod 8 and the first spring 7 during long-term use and improving the service life of the permanent anti-loosening fastener.

[0024] Furthermore, the main screw 1 below the through cavity 13 is provided with an internal thread 14 that matches the auxiliary screw 11. When the auxiliary screw 11 is installed at the bottom of the main screw 1, the auxiliary screw 11 and the internal thread 14 work together to allow the auxiliary screw 11 to be tightly installed inside the main screw 1.

[0025] Furthermore, the bottom of the buckle 16 matches the retaining ring 15. When the buckle 16 is moved inside the through cavity 13 by the insert post 17, the bottom of the buckle 16 is squeezed and contracted by the retaining ring 15, and the top of the buckle 16 is locked by the retaining ring 15 located above, thus limiting the buckle 16.

[0026] Furthermore, the interior of the reinforcing post 12 matches the insert post 17, and the bottom of the insert post 17 contacts the second spring 18. When the insert post 17 moves downward inside the reinforcing post 12, the second spring 18 is compressed, and at the same time, an upward thrust is applied to the insert post 17. When the upward thrust pushes the insert post 17, the top of the buckle 16 will be tightly pressed against the corresponding retaining ring 15, so that the buckle 16 provides an upward pull force to the main screw 1, thereby pulling and reducing the small gap at the threaded connection between the main screw 1 and the auxiliary screw 11.

[0027] The method of use in this embodiment is as follows: When using a permanent anti-loosening fastener, the main screw 1 is inserted through the material to be fixed, and the auxiliary screw 11 is installed at the bottom of the main screw 1. At this time, the movable nut 4 is in contact with the bottom end of the main screw 1. When the auxiliary screw 11 is twisted and moves inward into the main screw 1, the telescopic rod 8 and the first spring 7 are squeezed. After the auxiliary screw 11 is tightened, the movable nut 4 is twisted again to install it on the outer surface of the main screw 1 until the top end of the movable nut 4 clamps the material with the bottom end of the top nut 2. At this time, the telescopic rod 8 and the first spring 7 are pulled up or squeezed, so that the movable nut 4 receives an upward pushing force or a downward pulling force, which squeezes the gap between the movable nut 4 and the thread groove on the outer surface of the main screw 1, reducing the gap. At the same time, the fastener is in use. The vibration experienced by the movable nut 4 is absorbed by the telescopic rod 8 and the first spring 7, providing a certain degree of vibration resistance and preventing the fasteners from loosening. After the main screw 1 and the auxiliary screw 11 are tightly installed, the top nut 2 extends from the top of the reinforcing column 12. Then, the insert 17 is inserted into the extended end of the reinforcing column 12, so that the buckle 16 is located outside the reinforcing column 12 and extends into the through cavity 13. When the insert 17 moves downward inside the reinforcing column 12, the second spring 18 is compressed, and at the same time, an upward thrust is applied to the insert 17. When the upward thrust pushes the insert 17, the top of the buckle 16 will be tightly pressed against the corresponding retaining ring 15, so that the buckle 16 provides an upward pull force to the main screw 1, thereby reducing the small gap at the threaded connection between the main screw 1 and the auxiliary screw 11.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is 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 vibration-resistant permanent anti-loosening fastener, comprising a main screw (1), characterized in that: The main screw (1) is provided with a top nut (2) at its top end. A movable nut (4) is detachably installed on the outer surface of the main screw (1). A secondary screw (11) is detachably installed at the bottom of the main screw (1). A positioning block (10) is provided on the outer surface of the bottom of the secondary screw (11). A rotating ring (9) is provided on the outer surface of the positioning block (10). Several telescopic rods (8) are arranged equidistantly on the top of the rotating ring (9). The top ends of the several telescopic rods (8) are connected to the bottom end of the movable nut (4). A first spring (7) is connected between the movable nut (4) and the rotating ring (9) of the several telescopic rods (8). The top end of the auxiliary screw (11) is provided with a reinforcing column (12). The reinforcing column (12) is a cylindrical component with a hollow interior and an open top. The bottom end of the reinforcing column (12) is provided with a second spring (18). The middle position of the main screw (1) and the top nut (2) is provided with a through cavity (13). The top of the reinforcing column (12) extends out of the through cavity (13). The extended end of the reinforcing column (12) is inserted with a plug (17). The top end of the plug (17) is provided with a top cover (3). Several buckles (16) are arranged at the bottom edge of the top cover (3). Several retaining rings (15) are arranged vertically inside the through cavity (13).

2. The anti-vibration permanent anti-loosening fastener according to claim 1, characterized in that: The bottom end of the auxiliary screw (11) is provided with a bottom nut (6).

3. The vibration-resistant permanent anti-loosening fastener according to claim 2, characterized in that: The top end of the outer bottom nut (6) of the telescopic rod (8) is provided with a telescopic sleeve (5), and the top end of the telescopic sleeve (5) is rotatably connected to the bottom end of the movable nut (4).

4. The anti-vibration permanent anti-loosening fastener according to claim 1, characterized in that: The main screw (1) below the through cavity (13) is provided with an internal thread (14) that matches the auxiliary screw (11).

5. The anti-vibration permanent anti-loosening fastener according to claim 1, characterized in that: The bottom of the buckle (16) matches the retaining ring (15).

6. The anti-vibration permanent anti-loosening fastener according to claim 1, characterized in that: The interior of the reinforcing post (12) matches the insert post (17), and the bottom of the insert post (17) contacts the second spring (18).

Images