Lock nut

Abstract

The utility model discloses a locknut which comprises an inner nut and an outer nut, the inner wall of the inner nut is a through hole and is provided with a first thread, the inner nut comprises an upper half part and a lower half part, the outer side of the upper half part is provided with a first external thread, and the inner side of the outer nut is provided with a second internal thread matched with the first external thread. The outer nut body can rotate upwards along the first external threads, the outer diameter of the upper half portion is gradually increased from bottom to top, and a plurality of notches are formed in the upper half portion of the inner nut body and evenly distributed at the upper end of the upper half portion of the inner nut body around the axis of the inner nut body.

Description

Technical Field

[0001] The utility model relates to a nut, in particular to an anti-loosening nut. Background Art

[0002] Nuts are a common mechanical part used to connect and lock equipment. There are many types of nuts, but they are generally easy to loosen after being locked, which affects the normal operation of the equipment and requires frequent repeated tightening operations, thereby increasing labor intensity. Utility Model Content

[0003] The present application provides an anti-loosening nut, which can solve the problem that the nut is prone to loosening after being tightened.

[0004] In the present application, a locking nut is provided, comprising an inner nut and an outer nut, the inner wall of the inner nut being a through hole and provided with a first thread, the inner nut comprising an upper half and a lower half, the outer side of the upper half being provided with a first outer thread, the inner side of the outer nut being provided with a second inner thread matching the first outer thread, the outer nut being capable of rotating upward along the first outer thread, the outer diameter of the upper half gradually expanding from bottom to top, the upper half of the inner nut being provided with a notch, the notch being multiple, and the notches being evenly arranged around the axis of the inner nut at the upper end of the upper half of the inner nut.

[0005] Using the above technical solution, first rotate the inner nut to connect to the mating bolt and tighten it, and then continue to twist the outer nut. The twisting direction of the outer nut is the same as the tightening direction of the inner nut. The outer nut moves upward along the first outer thread. Since the outer diameter of the upper half of the inner nut increases as it goes up, the slot spacing becomes smaller by squeezing the upper half of the inner nut, thereby reducing the inner diameter of the upper half of the inner nut, so that the upper half of the inner nut fits tightly against the bolt.

[0006] Furthermore, a rubber ring is provided on the inner side of the inner nut.

[0007] With the above technical solution, when the inner nut and the bolt are tightened, the rubber ring increases the friction coefficient between the inner nut and the bolt, making the connection between the inner nut and the bolt tighter.

[0008] Furthermore, the outer side of the lower half of the inner nut and the outer side of the outer nut are hexagonal.

[0009] By adopting the above technical solution, it is convenient to use a wrench for tightening.

[0010] Furthermore, a tightening bolt is provided on the outside of the external thread, and the tightening bolt passes through the external nut and presses downward against the lower half.

[0011] By adopting the above technical solution, an upward force is applied to the outer nut, and multiple bolts can be tightened. By increasing the number of tightening bolts, the connection between the outer nut and the inner nut is made tighter.

[0012] Furthermore, a rotating disk is provided on the upper side of the lower half, and a threaded through hole that cooperates with the tightening bolt is provided above the rotating disk.

[0013] By adopting the above technical solution, tighten the bolt through the outer nut and then extend it into the threaded through hole, and then push the rotating disk downward and tightly against the inner nut.

[0014] Furthermore, a rubber gasket is provided between the rotating disk and the inner nut.

[0015] By adopting the above technical solution, the friction force is increased, and the rotating disk is prevented from rotating, thereby making the state of the outer nut more stable.

[0016] To sum up, in the present application, a locking nut is provided, which first rotates the inner nut to connect to the mating bolt and tightens it, and then continues to twist the outer nut, the twisting direction of the outer nut is the same as the tightening direction of the inner nut, and the outer nut moves upward along the first outer thread. Since the outer diameter of the upper half of the inner nut increases as it goes up, the slot spacing becomes smaller by squeezing the upper half of the inner nut, so that the inner diameter of the upper half of the inner nut becomes smaller, so that the upper half of the inner nut fits tightly against the bolt; it has the beneficial effect of not being easy to loosen after the nut is tightened. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0018] Figure 1 This is the appearance structure diagram of the utility model;

[0019] Figure 2 This is a top view of the structure of the utility model;

[0020] Figure 3 This is a cross-sectional structural diagram of the present utility model.

[0021] In the figure, 1. Inner nut; 2. Outer nut; 5. Rubber ring; 6. Notch; 7. Tightening bolt; 8. Turning plate; 9. Rubber gasket. Implementation Method

[0022] like Figure 1 The anti-loosening nut shown is characterized by comprising: an inner nut 1 and an outer nut 2.

[0023] The inner wall of the inner nut 1 is a through hole and is provided with a first thread for tightening with the bolt, wherein the inner nut 1 includes an upper half and a lower half.

[0024] The outer wall of the lower half of the inner nut is a hexagonal edge, which is convenient for tightening with a wrench. The outer wall of the upper half of the inner nut 1 is provided with a first external thread, and the inner wall of the outer nut 2 is provided with a second internal thread that cooperates with the first external thread. The outer nut 2 is rotatably connected to the upper half of the inner nut 1. Preferably, the outer wall of the outer nut 2 is also a hexagon of the same size as the outer wall of the lower half of the inner nut.

[0025] like Figure 3 As shown, the outer diameter of the upper part of the inner nut 1 gradually increases from bottom to top, and the inner wall of the external thread is also provided with an angle corresponding to the upper part of the inner nut 1. The outer nut 2 gradually presses inward against the upper part of the inner nut during the upward rotation process.

[0026] like Figure 2 As shown, the upper half of the inner nut 1 is provided with a notch 6. Preferably, there are multiple notches 6, and the notches 6 are evenly arranged around the axis of the inner nut and distributed at the upper end of the upper half of the inner nut 1. By providing the notch 6, space is left inward for the rope to be retracted in the upper half of the nut. When the outer nut 2 rotates upward, the outer nut 2 pushes the upper half of the inner nut 1 inward against the bolt, ensuring that the connection between the inner nut 1 and the bolt is tighter.

[0027] Preferably, a rubber ring 5 is provided on the inner side of the inner nut 1. When the inner nut 1 and the bolt are tightened, the rubber ring 5 increases the friction coefficient between the inner nut 1 and the bolt, making the connection between the inner nut and the bolt tighter.

[0028] Optionally, a tightening bolt 7 is provided on the outside of the outer nut 2. The tightening bolt 7 passes through the outer nut 2 and presses downward against the lower half of the inner nut 1, applying an upward force to the outer nut 2. There can be multiple tightening bolts 7. By increasing the number of tightening bolts 7, the connection between the outer nut 2 and the inner nut 1 is made tighter.

[0029] Optionally, a rotating disk 8 is provided on the upper side of the upper half of the inner nut. The rotating disk 8 rotates relative to the inner nut. The inner wall of the rotating disk 8 does not contact the upper half of the inner nut. A threaded through hole that cooperates with the tightening bolt 7 is provided on the upper side of the rotating disk 8. The tightening bolt 7 passes through the outer nut 2 and extends into the threaded through hole, pressing the rotating disk 8 downward and tightly against the inner nut 1.

[0030] Optionally, a rubber gasket 9 is provided between the rotating disk 8 and the inner nut 1 to increase friction and prevent the rotating disk 8 from rotating, thereby making the state of the outer nut 2 more stable.

[0031] When in use, first rotate the inner nut 1 to connect to the mating bolt and tighten it, and then continue to tighten the outer nut 2. The tightening direction of the outer nut 2 is the same as the tightening direction of the inner nut 1. The outer nut 2 moves upward along the first outer thread. Since the outer diameter of the upper half of the inner nut 1 increases as it goes up, the spacing between the notches 6 becomes smaller by squeezing the upper half of the inner nut, thereby reducing the inner diameter of the upper half of the inner nut, so that the upper half of the inner nut fits tightly against the bolt.

[0032] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention. They should all be included in the scope of the technical solution for which protection is requested in the present invention.

Claims

1. A lock nut, characterized in that: include: An inner nut (1) and an outer nut (2), wherein the inner wall of the inner nut (1) is a through hole and is provided with a first thread, and the inner nut (1) comprises an upper half and a lower half, and the outer side of the upper half is provided with a first outer thread, The inner side of the outer nut (2) is provided with a second inner thread that matches the first outer thread, and the outer nut (2) can be rotated upward along the first outer thread. The outer diameter of the upper half gradually increases from bottom to top. The upper part of the inner nut (1) is provided with a notch (6), and the notches (6) are multiple and evenly arranged around the axis of the inner nut and distributed at the upper end of the upper part of the inner nut (1).

2. A lock nut according to claim 1, characterized in that: A rubber ring (5) is provided on the inner side of the inner nut (1).

3. The anti-loosening nut according to claim 1, characterized in that: The outer side of the lower half of the inner nut and the outer side of the outer nut (2) are hexagonal.

4. The anti-loosening nut according to claim 1, characterized in that: A tightening bolt (7) is provided on the outside of the first external thread, and the tightening bolt (7) passes through the external nut (2) and presses downward against the lower half.

5. The anti-loosening nut according to claim 4, characterized in that: A rotating disk (8) is provided on the upper side of the lower half, and a threaded through hole matched with the tightening bolt (7) is provided above the rotating disk (8).

6. The anti-loosening nut according to claim 5, characterized in that: A rubber gasket (9) is provided between the rotating disk (8) and the inner nut.

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