Bearing type locknut assembly and thread assembly thereof

Abstract

The utility model provides a bearing type locknut assembly which comprises a large nut and a small nut, the large nut is rotatably connected with the small nut through a bearing, and the direction of an internal thread of the large nut is opposite to that of an internal thread of the small nut. According to the nut assembly, due to the fact that the two nuts are opposite in direction, the two nuts can be unscrewed at the same time only by needing force in two different directions, but the falling-off force generated by vibration is in the single direction, and therefore the nut assembly can be stably fixed to the bolt. The bearing type anti-loosening thread assembly comprises a bearing type anti-loosening nut assembly and a bolt, and the bearing type anti-loosening nut assembly is in threaded connection with the bolt. The bearing type anti-loosening thread assembly comprises the bearing type anti-loosening nut assembly and the bolt, the anti-loosening nut assembly is connected with the bolt in a fastening mode, and the bearing type anti-loosening thread assembly is convenient to install, disassemble and machine, and good in performance.

Description

Technical Field

[0001] The utility model relates to a bearing type anti-loosening nut assembly and a thread assembly thereof, belonging to the field of mechanical parts. Background Art

[0002] There are many ways to prevent loosening and falling off in the existing technology, mainly using nuts to lock, and then using washers to lock, including self-locking nuts, K-cap nuts, all-metal insert hexagonal locking nuts, nylon ring anti-loosening nuts, floating self-locking nuts, spring clip self-locking nuts. Japan has a so-called never loose thread, and China also has Tang's anti-loosening thread.

[0003] Floating self-locking nut: The ear piece is easily damaged; if the force is not enough, the nut is likely to loosen, affecting the normal use of the equipment; if the force is too great, the thread is easily damaged, affecting subsequent disassembly.

[0004] Nylon ring lock nut: limited number of uses, strict temperature limit, and low bearing capacity.

[0005] Spring clip self-locking nuts: Special tools or skills are required if the nut needs to be removed. In addition, the cost of locking nuts is also higher, and some types of locking nuts are not suitable for all types of screws and application scenarios.

[0006] K-cap nut: requires external screw all-metal insert hexagonal locking nut Disadvantages: First, its installation requires certain skills and experience, otherwise it may cause the nut to be over-tightened or over-loose, thus affecting its performance. Second, due to the elastic deformation of the locking ring, the tightening force of the nut will weaken over time, and it needs to be checked and re-tightened regularly.

[0007] Spiral lock nuts: easy to damage parts, there is a problem of easily seriously hurting parts, because over time, the internal friction will be worn, thus affecting the tightening effect. Hard Lock nuts: difficult to manufacture, high price, need to be imported. Tang's nut set: difficult to process. Combining the positive and negative threads through bearings can play a similar anti-loosening role as the Tang's thread set, but it is not difficult to process.

[0008] In order to prevent the looseness of spare parts after installation, nuts were used for locking. Since ordinary nuts are easy to fall off when vibrating, people invented various locking nuts, but each locking nut has its own advantages and disadvantages, some are not easy to install, some cannot be used multiple times, and some are difficult to manufacture. Utility Model Content

[0009] The utility model proposes a bearing type anti-loosening nut assembly, which solves the problems of easy falling off, manufacturing difficulty, and installation difficulty in the prior art. The utility model also proposes a bearing type anti-loosening threaded assembly, which connects the bearing type anti-loosening nut with the bolt thread, solving the problems of low performance, difficult processing, and easy deformation of the threaded assembly in the prior art.

[0010] The technical solution of the utility model is implemented as follows: a bearing type anti-loosening nut assembly comprises a large nut and a small nut, wherein the large nut is rotatably connected with the small nut through a bearing, and the internal thread of the large nut is opposite to the internal thread of the small nut.

[0011] Furthermore, the bearing is a ball bearing or a needle bearing.

[0012] Furthermore, a bearing mounting seat is provided on the small nut, and the bearing mounting seat is connected to the large nut through a bearing. A circular ring-shaped protrusion is provided on the inner wall of the large nut, and the circular ring-shaped protrusion abuts against the side of the bearing mounting seat.

[0013] Furthermore, the large nut internal thread of the large nut is a forward thread, and the small nut internal thread of the small nut is a reverse thread.

[0014] Furthermore, the large nut internal thread of the large nut is a reverse thread, and the small nut internal thread of the small nut is a forward thread.

[0015] A bearing type anti-loosening threaded assembly comprises a bearing type anti-loosening nut assembly and a bolt, wherein the bearing type anti-loosening nut assembly is threadedly connected to the bolt.

[0016] Furthermore, the bolt includes a screw rod 1 and a screw rod 2, the outer diameter of the screw rod 1 is greater than the outer diameter of the screw rod 2, the screw rod 1 is threadedly connected to the large nut, and the screw rod 2 is threadedly connected to the small nut.

[0017] Furthermore, the first screw and the second screw are integrally formed.

[0018] Furthermore, the screw rod 1 is provided with a screw rod 1 external thread, the screw rod 2 is provided with a screw rod 2 external thread, the large nut internal thread is threadedly connected to the screw rod 1 external thread, and the small nut internal thread is threadedly connected to the screw rod 2 external thread.

[0019] The beneficial effects of the utility model are as follows: the utility model is a bearing type anti-loosening nut assembly that uses two nuts in opposite directions to be combined together. When the mechanical equipment vibrates, a single nut is easy to fall off slowly, but in the utility model, since the two nuts are in opposite directions, two forces in different directions are required to unscrew the two nuts at the same time, but the falling force generated by the vibration is in a single direction, so that the nut assembly can be firmly fixed on the bolt.

[0020] The utility model discloses a bearing type anti-loosening nut assembly, which comprises two nuts with opposite nut thread directions (one is clockwise and the other is counterclockwise). The two nuts are large and small, and the two nuts are connected by a bearing, so that the nut assembly can be installed and disassembled conveniently and quickly.

[0021] In the utility model, a circular ring protrusion is arranged on one side of the large nut to block the small nut, thereby preventing the large nut from being subjected to an outward force, thereby preventing the middle ball from being damaged.

[0022] The utility model discloses a bearing type anti-loosening thread assembly, which comprises a bearing type anti-loosening nut assembly and a bolt. The anti-loosening nut assembly is tightly connected with the bolt, and is easy to install and disassemble, has good performance and is easy to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a cross-sectional structural schematic diagram of an embodiment of a bearing type anti-loosening thread assembly of the utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of a bolt of a bearing type anti-loosening thread assembly shown;

[0026] Figure 3 for Figure 1 The cross-sectional structure diagram of the bearing type anti-loosening nut assembly of the bearing type anti-loosening thread assembly shown.

[0027] In the accompanying drawings: 1-bolt; 2-bearing type anti-loosening nut assembly; 11-screw rod one; 111-screw rod one external thread; 12-screw rod two; 121-screw rod two external thread; 21-large nut; 211-cavity one; 212-large nut internal thread; 213-annular protrusion; 22-small nut; 221-cavity two; 222-small nut internal thread; 223-bearing mounting seat; 23-bearing. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 3 As shown, a bearing type anti-loosening nut assembly includes a large nut 21 and a small nut 22. The large nut 21 is rotatably connected to the small nut 22 through a bearing 23. The inner thread 212 of the large nut and the inner thread 222 of the small nut are in opposite directions.

[0030] The bearing 23 is a ball bearing or a needle bearing. In this embodiment, the bearing 23 is a ball bearing.

[0031] The small nut 22 is provided with a bearing mounting seat 223 , and the bearing mounting seat 223 is connected to the large nut 21 through the bearing 23 . The inner wall of the large nut 21 is provided with a circular protrusion 213 , and the circular protrusion 213 abuts against the side of the bearing mounting seat 223 .

[0032] The large nut internal thread 212 of the large nut 21 is a forward thread, and the small nut internal thread 222 of the small nut 22 is a reverse thread. (Another embodiment: the large nut internal thread 212 of the large nut 21 is a reverse thread, and the small nut internal thread 222 of the small nut 22 is a forward thread.)

[0033] like Figure 1 , 2 As shown, a bearing type anti-loosening threaded assembly includes a bearing type anti-loosening nut assembly 2 and a bolt 1, and the bearing type anti-loosening nut assembly 2 is threadedly connected to the bolt 1.

[0034] The bolt 1 includes a screw rod 11 and a screw rod 12 . The outer diameter of the screw rod 11 is greater than the outer diameter of the screw rod 12 . The screw rod 11 is threadedly connected to the large nut 21 , and the screw rod 12 is threadedly connected to the small nut 22 .

[0035] The screw rod 11 and the screw rod 2 12 are integrally formed.

[0036] The screw rod 1 11 is provided with a screw rod external thread 111 , the screw rod 2 12 is provided with a screw rod external thread 121 , the large nut internal thread 212 is threadedly connected to the screw rod external thread 111 , and the small nut internal thread 222 is threadedly connected to the screw rod external thread 121 .

[0037] Tighten the bearing type anti-loosening nut assembly 2 and the bolt 1: the small nut internal thread 222 of the small nut 22 is tightened along the external thread 121 of the screw rod 2 until the large nut 21 abuts against the screw rod 1 11 , while tightening the small nut 22 clockwise and the large nut 21 counterclockwise.

[0038] Loosen the bearing type anti-loosening nut assembly 2 and the bolt 1: loosen the small nut 22 counterclockwise while loosening the large nut 21 clockwise. Continue to loosen the small nut 22 counterclockwise until the large nut 21 is separated from the screw rod 11.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bearing type anti-loosening nut assembly, characterized in that: It includes a large nut and a small nut, the large nut is rotatably connected to the small nut through a bearing, the internal thread of the large nut is in opposite direction to the internal thread of the small nut, a bearing mounting seat is provided on the small nut, the bearing mounting seat is connected to the large nut through a bearing, and a circular protrusion is provided on the inner wall of the large nut, which abuts against the side of the bearing mounting seat.

2. The bearing type anti-loosening nut assembly according to claim 1, characterized in that: The bearing is a ball bearing or a needle bearing.

3. The bearing type locking nut assembly according to claim 1, characterized in that: The internal thread of the large nut of the large nut is a forward thread, and the internal thread of the small nut of the small nut is a reverse thread.

4. The bearing type locking nut assembly according to claim 1, characterized in that: The internal thread of the large nut of the large nut is a reverse thread, and the internal thread of the small nut of the small nut is a forward thread.

5. A threaded assembly, characterized in that: It comprises a bearing type anti-loosening nut assembly and a bolt as described in any one of claims 1 to 4, wherein the bearing type anti-loosening nut assembly is threadedly connected to the bolt.

6. The threaded assembly according to claim 5, characterized in that: The bolt comprises a screw rod 1 and a screw rod 2, the outer diameter of the screw rod 1 is greater than the outer diameter of the screw rod 2, the screw rod 1 is threadedly connected to the large nut, and the screw rod 2 is threadedly connected to the small nut.

7. The threaded assembly according to claim 6, characterized in that: The first screw and the second screw are integrally formed.

8. The threaded assembly according to claim 7, characterized in that: The first screw is provided with a first screw external thread, the second screw is provided with a second screw external thread, the large nut internal thread is threadedly connected with the first screw external thread, and the small nut internal thread is threadedly connected with the second screw external thread.

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