Lock nut
By adopting elastic ring and ball structure in the nut and combining the toothed flange of the flange pad surface, the problem of loosening of the nut is solved, achieving a more stable fastening effect, reducing the cost of use and safety risks.
Patent Information
- Application Number
- CN202421098757.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-20
AI Technical Summary
Nuts are easily loosened in long-term use or vibrating environments, resulting in loosening of tightening objects. The prior art is difficult to effectively prevent loosening, which increases the cost of use and safety risks.
A lock nut is designed, and the first and second elastic rings are arranged in the internal threaded holes, beaded chutes and ball structures are arranged, combined with the toothed flange on the flange pad surface, through the matching of the elastic ring and balls, Snap the screw to increase friction and prevent loosening.
Effectively prevent screw loosening, improve the stability and safety of the fastening structure, reduce the need for regular inspections, and reduce the cost of use.
Smart Images
Figure CN222185402U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nuts, in particular to anti-loosening nuts. Background Art
[0002] Nuts are parts that are screwed together with bolts or screws to fix components between each other. After installation, they are easy to loosen over time or in a frequent vibration environment, which is unreliable. Nuts are generally made of metal with smooth end faces, which are easy to slide between the fastened components. When the nut loosens, the fastened objects will loosen, causing various losses and even threatening safety. In order to avoid the hidden danger of loosening, a lot of manpower and material resources may be required, such as regular inspections, which greatly increases the cost of use.
[0003] There is a need to propose a new technical solution for the existing technology of nuts to improve the nuts to prevent the nuts from loosening and solve the above problems. Utility Model Content
[0004] In view of this, the purpose of the present invention is to provide a locking nut to solve the above-mentioned problem.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:
[0006] The utility model provides a locking nut, which comprises a nut part and a flange gasket. The nut part is provided with an internal threaded hole for passing a screw rod, the flange gasket is fixed to the lower end of the nut part, and a toothed flange is arranged on the flange gasket.
[0007] Among them, a first elastic ring is fixed at the upper end of the internal threaded hole, which is used to be wound around the outside of the screw to tighten the screw. A second elastic ring is fixed at the lower end of the internal threaded hole. On the inner side of the second elastic ring, a bead embedding groove is opened on the inner wall of the internal threaded hole. The bead embedding groove is equipped with a ball that can slide along the bead embedding groove. The ball abuts against the inner wall of the second elastic ring and can slide in the bead embedding groove toward the internal threaded hole under the extrusion of the second elastic ring, extending out of the inner wall of the internal threaded hole for clamping the screw. The central axes of the internal threaded hole, the first elastic ring and the second elastic ring are coaxial.
[0008] Preferably, the length direction of the bead embedding groove extends along the radial direction of the internal threaded hole, and the ball slides along the length direction of the bead embedding groove.
[0009] Preferably, the number of the bead embedding grooves is two, and the two bead embedding grooves are respectively located on two opposite sides of the same diameter of the internal threaded hole.
[0010] Preferably, the first elastic ring is embedded in the nut portion, and the second elastic ring is attached to the flange gasket surface.
[0011] Preferably, the first elastic ring and the second elastic ring are rubber rings.
[0012] Preferably, the ball is a metal spherical structure.
[0013] Preferably, the toothed flange comprises a plurality of tooth plates surrounding the flange gasket surface, and the surrounding direction of the tooth plates is opposite to the thread extension direction of the internal threaded hole.
[0014] Preferably, the nut portion and the flange gasket are an integrally formed structure.
[0015] The technical effects achieved by the technical solution of the utility model mainly include:
[0016] The above-mentioned anti-loosening nut is used to insert the screw, and the first elastic ring at the upper end of the internal threaded hole can be surrounded by the screw and the screw is tightly fixed by the elastic shrinkage ring. At the same time, the second elastic ring at the lower end contracts and squeezes one side of the ball, and the ball can slide toward the internal threaded hole in the ball embedding groove, thereby abutting between the threads of the screw, clamping the side of the screw, preventing the screw from loosening, and limiting the screw from withdrawing from the anti-loosening nut. With the cooperation of the first elastic ring and the second elastic ring, the screw is subjected to lateral tightening force at the upper and lower ends of the anti-loosening nut respectively, and the force is balanced, thereby improving the stability of the fastening structure.
[0017] The toothed flange on the flange gasket surface can increase the friction between the anti-loosening nut and the component, prevent the anti-loosening nut from rotating relative to the screw, and further prevent the nut and the screw from loosening and falling off. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the upper end structure of the anti-loosening nut provided in an embodiment of the utility model;
[0019] Figure 2 is a schematic diagram of the lower end structure of the anti-loosening nut;
[0020] Figure 3 is a side view of the locking nut;
[0021] Figure 4 It is a bottom view of the anti-loosening nut.
[0022] The reference numerals in the above drawings are:
[0023] The nut portion 1 , the internal threaded hole 10 , the upper end 10 a of the internal threaded hole, the first elastic ring 11 , the lower end 10 b of the internal threaded hole, the second elastic ring 12 , the ball 13 , the ball embedding groove 130 , the flange gasket 2 , and the toothed flange 21 . DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the utility model shown in the accompanying drawings and described according to the accompanying drawings are merely exemplary, and the utility model is not limited to these embodiments.
[0025] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not very relevant are omitted.
[0026] Reference Figures 1 to 3 As shown, an embodiment of the utility model provides a locking nut, which includes a nut portion 1 and a flange gasket 2.
[0027] The nut portion 1 is provided with an internal threaded hole 10 for inserting a screw rod. The flange gasket 2 is fixed to the lower end of the nut portion 1. The flange gasket is provided with a toothed flange 21.
[0028] A first elastic ring 11 is fixed at the upper end 10a of the internal threaded hole 10, which is used to be wound around the outer side of the screw to tighten the screw, and a second elastic ring 12 is fixed at the lower end 10b of the internal threaded hole 10. Figure 4 As shown, on the inner side of the second elastic ring 12, a bead embedding groove 130 is opened on the inner wall of the internal threaded hole 10, and a ball 13 that can slide along the bead embedding groove 130 is installed in the bead embedding groove 130. The ball 13 abuts against the inner wall of the second elastic ring 12 and can slide toward the internal threaded hole 10 in the bead embedding groove 130 under the extrusion of the second elastic ring 12, and extend out of the inner wall of the internal threaded hole 10 for fixing the screw. The central axes of the internal threaded hole 10, the first elastic ring 11 and the second elastic ring 12 are coaxial.
[0029] Based on the above-mentioned anti-loosening nut provided by the embodiment of the utility model, after the internal thread hole 10 is inserted into the screw, the first elastic ring 11 at the upper end 10a of the internal thread hole 10 can surround the outside of the screw and fix the screw by elastic shrinking ring. At the same time, the second elastic ring 12 at the lower end 10b shrinks and squeezes one side of the ball 13, and the ball 13 can slide toward the internal thread hole 10 in the bead embedding groove 130, thereby abutting against the thread of the screw, clamping the side of the screw, preventing the screw from loosening, and limiting the screw from exiting the anti-loosening nut. Under the cooperation of the first elastic ring 11 and the second elastic ring 12, the screw is subjected to lateral tightening force at both ends of the anti-loosening nut, and the force is balanced, thereby improving the stability of the structure.
[0030] The toothed flange 21 provided on the flange gasket surface can increase the friction between the anti-loosening nut and the component, prevent the anti-loosening nut from rotating relative to the screw, and further avoid loosening and falling off.
[0031] Specifically, the length direction of the bead-embedded groove 130 extends along the radial direction of the internal threaded hole 10, and the ball 13 slides along the length direction of the bead-embedded groove 130. Under the pushing action of the second elastic ring 12, the ball 13 moves linearly in the bead-embedded groove 130 of the transverse groove structure toward the center of the internal threaded hole 10, and the part of the ball 13 exposed in the internal threaded hole 10 will contact the thread of the screw rod, embed in the valley between the threads, and be locked and fixed. When the anti-loosening nut starts to be installed in the screw rod, the peak of the thread on the screw rod can squeeze the ball 13 away, so that the ball 13 is reset and retreated back into the bead-embedded groove 130.
[0032] In this embodiment, there are two bead-embedded grooves 130, which are respectively located on opposite sides of the same diameter of the internal threaded hole 10. Two bead-embedded grooves 130 with balls 13 are respectively arranged on both sides of the internal threaded hole 10, which are symmetrical to the center, so that the lateral tightening force on the screw rod can be more evenly and balanced, and the fixing structure is more stable.
[0033] The first elastic ring 11 is embedded in the nut portion 1 , and the second elastic ring 12 is attached to the flange gasket 2 , so that the first elastic ring 11 and the second elastic ring 12 need to maintain a stable connection.
[0034] Exemplarily, the first elastic ring 11 and the second elastic ring 12 are rubber rings. Rubber has the advantages of good elasticity, stable structure and low production cost, and is very suitable for the first elastic ring 11 and the second elastic ring 12.
[0035] Exemplarily, the ball 13 is a metal spherical structure. The spherical structure facilitates locking the screw while avoiding interference with the screw being locked into the locking nut. The metal ball 13 has strong durability.
[0036] The toothed flange 21 includes a plurality of teeth surrounding the flange gasket 2, and the surrounding direction of the teeth is opposite to the thread extension direction of the internal threaded hole 10, so that after the toothed flange 21 contacts the surface of the component, it is difficult to reverse the anti-loosening nut to avoid loosening and falling off.
[0037] In order to facilitate the manufacturing and processing of the anti-loosening nut, the nut portion 1 and the flange gasket 2 are an integrally formed structure.
[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0039] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.
Claims
1. A locking nut, characterized in that: It comprises a nut portion (1) and a flange gasket (2), The nut part (1) is provided with an internal threaded hole (10) for inserting a screw rod, the flange gasket (2) is fixed to the lower end of the nut part (1), and the flange gasket is provided with a toothed flange (21). A first elastic ring (11) is fixed at the upper end (10a) of the internal threaded hole (10) for being wound around the outer side of the screw to tighten the screw; a second elastic ring (12) is fixed at the lower end (10b) of the internal threaded hole (10); a bead-embedded groove (130) is provided on the inner wall of the internal threaded hole (10) on the inner side of the second elastic ring (12); a ball (13) is installed in the bead-embedded groove (130) that can slide along the bead-embedded groove (130); the ball (13) abuts against the inner wall of the second elastic ring (12) and can slide in the bead-embedded groove (130) toward the internal threaded hole (10) under the pressure of the second elastic ring (12), and protrudes from the inner wall of the internal threaded hole (10) for clamping the screw; the central axes of the internal threaded hole (10), the first elastic ring (11) and the second elastic ring (12) are coaxial.
2. The anti-loosening nut according to claim 1, characterized in that: The length direction of the bead embedding slide groove (130) extends along the radial direction of the internal threaded hole (10), and the ball (13) slides along the length direction of the bead embedding slide groove (130).
3. The anti-loosening nut according to claim 1, characterized in that: The number of the bead embedding grooves (130) is two, and the two bead embedding grooves (130) are respectively located on two opposite sides of the same diameter of the internal threaded hole (10).
4. The anti-loosening nut according to claim 1, characterized in that: The first elastic ring (11) is embedded in the nut portion (1), and the second elastic ring (12) is attached to the flange gasket surface (2).
5. The anti-loosening nut according to claim 1, characterized in that: The first elastic ring (11) and the second elastic ring (12) are rubber rings.
6. The anti-loosening nut according to claim 1, characterized in that: The ball (13) is a metal spherical structure.
7. The anti-loosening nut according to claim 1, characterized in that: The toothed flange (21) comprises a plurality of tooth plates surrounding the flange gasket surface (2), wherein the surrounding direction of the tooth plates is opposite to the thread extension direction of the internal threaded hole (10).
8. The anti-loosening nut according to claim 1, characterized in that: The nut portion (1) and the flange gasket surface (2) are an integrally formed structure.