Lock nut
By designing an anti-loosening nut, utilizing elastic washers and anti-slip block structures, combined with a mechanical locking mechanism of sliding rods and locking blocks, the problem of traditional nuts loosening under vibration or impact loads is solved, achieving a stable connection and efficient installation.
Patent Information
- Application Number
- CN202520858202.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-30
AI Technical Summary
Traditional nuts are prone to loosening under vibration or impact loads, leading to connection failure and making it impossible to maintain stability and durability.
A locking nut was designed, which uses an elastic washer and an anti-slip block structure, combined with a mechanical locking mechanism of a sliding rod and a locking block. Through the cooperation of the sliding groove and the locking groove, a stable connection of the bolt is achieved.
It effectively prevents bolts from loosening under vibration or impact loads, improves the stability and safety of the connection, reduces the need for professional tools, simplifies the installation process, and enhances durability and aesthetics.
Smart Images
Figure CN223923563U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to nut structure technical field especially relates to a lock nut. BACKGROUND
[0002] The nut is a kind of fastener, usually cooperates with bolt or screw and is used to connect and fix two or more parts, they are widely used in machinery, automobile, aerospace, building, furniture and various fields, are indispensable basic elements in industrial production and daily life.
[0003] The traditional nut may fall off due to loosening under the action of vibration or impact load, leading to connection failure, mainly because the friction between threads and the size of pre-tightening force are insufficient to effectively resist the load from outside, so as to fail to maintain the stability and durability of connection, to solve the above problems, the utility model provides a lock nut. UTILITY MODEL CONTENT
[0004] The utility model aims at solving the shortcomings in prior art and provides a lock nut.
[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A lock nut, including nut main part and bolt, the upper end of the nut main part is equipped with the threaded hole compatible with bolt, the lower end of the nut main part is fixedly connected with installation ring, the inside of the installation ring is fixedly connected with elastic washer, the lower end of the bolt is fixedly connected with anti-skid block compatible with elastic washer, the upper end of the both sides of the nut main part is fixedly connected with mounting block, the upper end of the bolt is fixedly connected with hexagonal head, the upper surface of the hexagonal head is equipped with lock assembly.
[0007] As a further improvement of the utility model, the lock assembly includes the sliding slot being equipped on the both sides of the upper surface of hexagonal head, the inside of the sliding slot is movably connected with sliding rod, the lower surface of the sliding rod is fixedly connected with clamping block.
[0008] As a further improvement of the utility model, the upper surface of the mounting block is equipped with the clamping slot compatible with clamping block, the upper end of the sliding rod is fixedly connected with limiting block.
[0009] As a further improvement of the utility model, the both sides of the lower surface of the hexagonal head are equipped with the receiving slot compatible with clamping block, and the receiving slot is connected with sliding slot.
[0010] As a further improvement of the utility model, the lower surface of the installation ring is fixedly connected with protective cap nut.
[0011] As a further improvement of the utility model, the surface of the nut body is provided with a plurality of function grooves.
[0012] The utility model discloses the beneficial effect:
[0013] Through the setting joint block, when using, bolt is rotated into the nut body, then through the sliding and the rotation slide rod and the joint block on it can complete locking, not only simplify the installation step, also reduced the demand to professional tool, improved work efficiency, the cooperation of joint block and joint groove effectively prevented the loosening of bolt in the use process, and the mechanical locking mechanism improved the stability and safety of connection, and is applicable to the occasion that needs to bear the vibration or impact load.
[0014] Through the setting elastic washer, when using, the design of antiskid block and elastic washer makes the nut body can provide the even clamping force, effectively prevents the loosening of bolt because of stress concentration, in addition the elastic property of elastic washer can also absorb part vibration energy, further reduces the loosening risk, and the protection nut under the surface of installation ring not only provides additional protection for the nut body, reduces the performance decline because of environmental factor, also increases the nut's aesthetic and durability.
[0015] Summarized above, the utility model discloses the reliability of connecting piece under extreme conditions through the double anti-loosening mechanism, effectively avoids the equipment failure or safety accident that may be caused because of bolt loosening. BRIEF DESCRIPTION OF DRAWINGS
[0016] Fig. 1 The utility model proposes a kind of structure schematic diagram of locknut.
[0017] Fig. 2 The utility model proposes a kind of exploded structure schematic diagram of locknut.
[0018] Fig. 3 The utility model proposes a kind of structure schematic diagram of nut body of locknut.
[0019] In the drawing: 1 nut body, 2 bolt, 3 threaded hole, 4 installation ring, 5 elastic washer, 6 antiskid block, 7 installation block, 8 hexagonal head, 9 sliding slot, 10 slide rod, 11 joint block, 12 joint groove, 13 limit block, 14 storage slot, 15 protection nut, 16 function groove. DETAILED DESCRIPTION
[0020] The technical scheme in the utility model embodiments will be described clearly and completely below in conjunction with the drawings of the utility model embodiments, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0021] Refer to Figs. 1-3A locking nut includes a nut body 1 and a bolt 2. The upper end of the nut body 1 has a threaded hole 3 that matches the bolt 2. The lower end of the nut body 1 is fixedly connected to an installation ring 4. An elastic washer 5 is fixedly connected inside the installation ring 4. The lower end of the bolt 2 is fixedly connected to an anti-loosening block 6 that matches the elastic washer 5. The upper ends of both sides of the nut body 1 are fixedly connected to installation blocks 7. The upper end of the bolt 2 is fixedly connected to a hexagonal head 8. The upper surface of the hexagonal head 8 is provided with a locking component.
[0022] In this utility model, the anti-loosening component includes sliding grooves 9 on both sides of the upper surface of the hexagonal head 8. The design of the sliding grooves 9 allows the sliding rod 10 to slide smoothly and steadily inside them. The sliding rod 10 is movably connected inside the sliding grooves 9. A snap-fit block 11 is fixedly connected to the lower surface of the sliding rod 10. The shape and size of the snap-fit block 11 perfectly match the snap-fit groove 12 on the mounting block 7, ensuring a firm connection between the two. The upper surface of the mounting block 7 has a snap-fit groove 12 that matches the snap-fit block 11. The design of the snap-fit groove 12 provides a stable and reliable locking position for the snap-fit block 11. A limit block 13 is fixedly connected to the upper end of the sliding rod 10. The presence of the limit block 13 effectively prevents the sliding rod 10 from falling off during the sliding process, enhancing the overall stability of the anti-loosening component.
[0023] Both sides of the lower surface of the hexagonal head 8 are provided with storage slots 14 that are adapted to the snap-fit block 11. The storage slots 14 provide an initial storage position for the snap-fit block 11, ensuring smooth movement of the snap-fit block 11 during the sliding process. The storage slots 14 are connected to the slide groove 9. The lower surface of the mounting ring 4 is fixedly connected with a protective nut 15. The protective nut 15 provides additional protection for the nut body 1, increasing the durability and safety of the device. Several functional slots 16 are provided on the surface of the nut body 1. The design of the functional slots 16 reduces the weight of the nut body 1 and improves its overall performance.
[0024] In use, the bolt 2 is first aligned with the threaded hole 3 on the nut body 1. Then, a rotational force is applied through the hexagonal head 8 to screw the bolt 2 into the threaded hole 3 of the nut body 1. Once the bolt 2 is fully screwed in, the anti-slip block 6 at its lower end will precisely embed into the elastic washer 5 fixed by the mounting ring 4 at the lower end of the nut body 1. At this time, the receiving groove 14 at the lower part of the hexagonal head 8 will align with the pre-set snap-fit groove 12 on the mounting block 7. The strong friction generated between the anti-slip block 6 and the elastic washer 5 provides initial anti-loosening protection for the bolt 2, effectively resisting initial vibration or external force. Then push the slide bar 10 downwards to make it slide smoothly in the slide groove 9, so that the locking block 11 hidden in the storage groove 14 can slide smoothly into and pass through the locking groove 12 on the mounting block 7. After the locking block 11 has completely passed through the locking groove 12, rotate the locking block 11 to lock it in a position where it cannot return directly through the locking groove 12. At this time, the locking block 11 and the limiting block 13 at the upper end of the slide bar 10 together form a reliable limiting mechanism, which firmly locks the relative position of the bolt 2 and the nut body 1, thereby improving the stability of the connection and effectively preventing loosening caused by vibration or external force.
[0025] 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 lock nut comprising a nut body (1) and a bolt (2), characterized in that, The upper end of the nut body (1) is provided with a threaded hole (3) matched with the bolt (2), the lower end of the nut body (1) is fixedly connected with a mounting ring (4), the inside of the mounting ring (4) is fixedly connected with an elastic washer (5), the lower end of the bolt (2) is fixedly connected with an anti-skid block (6) matched with the elastic washer (5), the upper end of the both sides of the nut body (1) is fixedly connected with a mounting block (7), the upper end of the bolt (2) is fixedly connected with a hexagonal head (8), the upper surface of the hexagonal head (8) is provided with an anti-loose assembly.
2. A lock nut according to claim 1, wherein The anti-loose assembly comprises the slide grooves (9) provided on the both sides of the upper surface of the hexagonal head (8), the inside of the slide groove (9) is movably connected with a slide rod (10), and the lower surface of the slide rod (10) is fixedly connected with a clamping block (11).
3. A lock nut according to claim 2, wherein The upper surface of the mounting block (7) is provided with a clamping groove (12) matched with the clamping block (11), and the upper end of the slide rod (10) is fixedly connected with a limiting block (13).
4. A lock nut according to claim 2, wherein The both sides of the lower surface of the hexagonal head (8) are provided with receiving grooves (14) matched with the clamping block (11), and the receiving grooves (14) are connected with the slide grooves (9).
5. The lock nut of claim 1 wherein: The lower surface of the mounting ring (4) is fixedly connected with a protective nut (15).
6. A lock nut according to claim 1 wherein, The surface of the nut body (1) is provided with a plurality of functional grooves (16).