Anti-loosening nut

Abstract

The utility model relates to the field of nuts, and discloses an anti-loosening nut which comprises a first nut body and a second nut body, the top of the first nut body is attached to the bottom of the second nut body, an anti-loosening mechanism is arranged on the top of the first nut body, the anti-loosening mechanism comprises a friction piece, and the friction piece is fixedly installed on the top of the first nut body. A chute is formed in the top of the second nut, a clamping block is fixedly connected to the end, away from the first nut, of each friction piece, a bolt is arranged in the first nut, and the number of the friction pieces is multiple. According to the anti-loosening bolt, the second nut is installed above the first nut, so that the inclined groove in the bottom of the second nut extrudes the friction piece on the top of the first nut, the friction force between the first nut and the bolt is increased, the first nut is prevented from loosening and falling under the action of vibration impact load, and the anti-loosening effect is achieved; and the installation reliability and safety of the equipment are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to nut field especially, it relates to a nut of anti -loosening. BACKGROUND

[0002] The working principle of nut is to adopt the friction between nut and bolt and carry out self -locking. But in dynamic load, the reliability of this self -locking will reduce. In some important occasion, we will adopt some anti -loosening measures to guarantee the reliability of nut locking. Among them, the anti -loosening nut is one of the anti -loosening measures. Fastener is widely used, and many fasteners are in heavy -duty, vibration working environment, and are easy to loosen, and once the fastener of some parts loosens, can probably cause serious accident even endanger life. Therefore, improving the anti -loosening performance of nut becomes the problem that urgently needs to be solved.

[0003] The existing anti -loosening measure is generally to set up the washer or the gasket between the nut and the spare part, and the elastic force that the washer or the gasket is pressed flat after the nut is tightened can make the compression between the screw thread, but the anti -loosening effect under the vibration impact load of the washer or the gasket is poor, and therefore the anti -loosening nut is proposed to solve the above -mentioned problems. UTILITY MODEL CONTENT

[0004] In order to make up for the above -mentioned insufficient, the utility model provides a kind of anti -loosening nut, to improve the problem of " the anti -loosening effect under the vibration impact load of the washer or the gasket is poor " in prior art.

[0005] In order to realize the above -mentioned purpose, the utility model has the following technical scheme: a kind of anti -loosening nut, including first nut and second nut, the top of first nut and the bottom of second nut are attached, the top of first nut is provided with anti -loosening mechanism, the anti -loosening mechanism includes friction piece, the friction piece is fixedly installed in the top of first nut, the top of second nut is provided with inclined slot, the end of friction piece away from first nut is fixedly connected with clamping block, the inside of first nut is provided with bolt.

[0006] As further description of the above technical scheme:

[0007] The number of the friction piece is set to multiple, and multiple friction pieces are arranged at equal angles on the top of the first nut.

[0008] As further description of the above technical scheme:

[0009] The friction piece is set to be of elastic rubber material.

[0010] As further description of the above technical scheme:

[0011] The bolt is provided with a groove, and a clamping groove is formed in the inner wall of the groove.

[0012] As a further description of the above technical solution:

[0013] The number of the grooves is multiple, and the multiple grooves are arranged in an equiangular manner on the outer wall of the bolt.

[0014] As a further description of the above technical solution:

[0015] The number of the clamping grooves is multiple, and the multiple clamping grooves are arranged in a straight line at equal intervals on the inner wall of the groove.

[0016] As a further description of the above technical solution:

[0017] The first nut is internally provided with a threaded groove one, and the second nut is internally provided with a threaded groove two.

[0018] As a further description of the above technical solution:

[0019] The friction member is arranged in an inclined state.

[0020] The utility model has the advantages of the following:

[0021] 1. In the utility model, the first nut, the second nut, the friction member, the inclined groove and the bolt are matched, the second nut is installed above the first nut, the inclined groove at the bottom of the second nut extrudes the friction member at the top of the first nut, the friction member is tightly pressed in the groove, the friction between the first nut and the bolt is increased, the first nut is prevented from loosening and falling under the action of vibration and impact load, the loosening prevention effect is realized, and the installation reliability and safety of the equipment are ensured.

[0022] 2. In the utility model, the clamping block arranged on the surface of the friction member improves the stability of the friction member in the groove, ensures the stability of installation, and when the first nut rotates, the friction member rotates relative to the bolt, so that the friction member is deformed under the extrusion of the surface of the bolt and does not hinder the rotation of the first nut. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure in the utility model;

[0024] Figure 2 It is a schematic diagram of the overall three-dimensional explosion structure in the utility model;

[0025] Figure 3 It is a schematic diagram of the first nut and the second nut in the utility model.

[0026] LEGEND:

[0027] 1, the first nut; 2, the second nut; 3, the friction piece; 4, the inclined groove; 5, the clamping block; 6, the bolt; 7, the groove; 8, the clamping groove; 9, the first thread groove; 10, the second thread groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] Referring to Figure 1 , Figure 2 An embodiment provided by the utility model: a kind of anti-loose nut, including first nut 1 and second nut 2, the top of first nut 1 is provided with anti-loose mechanism, and anti-loose mechanism includes friction piece 3, and friction piece 3 has good friction resistance, by increasing the pressure between friction piece 3 and bolt 6, according to friction force calculation formula, the greater the pressure, the greater the friction, and friction piece 3 is fixedly installed at the top of first nut 1, and the top of second nut 2 is provided with inclined groove 4, and the end of friction piece 3 away from first nut 1 is fixedly connected with clamping block 5.

[0030] Referring to Figure 2 , the number of friction piece 3 is set to multiple, and multiple friction piece 3 is arranged at the top of first nut 1 in the form of equiangular spacing ring, which can well increase the contact area with bolt 6 and ensure the effect of anti-loose, and friction piece 3 is set to be made of elastic rubber material, and friction piece 3 is set to be in an inclined state, when first nut 1 rotates, friction piece 3 is driven to rotate relative to bolt 6, so that friction piece 3 is deformed by extrusion of the surface of bolt 6, and then the rotation of first nut 1 is not hindered.

[0031] Referring to Figure 2 - Figure 3 The inside of first nut 1 is provided with bolt 6, the inside of first nut 1 is provided with first thread groove 9, the inside of second nut 2 is provided with second thread groove 10, by the effect of nut conversion, first nut 1 and second nut 2 are sequentially rotated and installed on the surface of bolt 6, and first nut 1 is located below second nut 2.

[0032] Referring to Figure 1 - Figure 2The surface of the bolt 6 is provided with grooves 7 matched with the friction piece 3, the surface of the friction piece 3 is in contact with the grooves 7, so that the friction between the first nut 1 and the bolt 6 is increased, the inner wall of the grooves 7 is provided with clamping grooves 8 matched with the clamping blocks 5, the number of the grooves 7 is multiple, the multiple grooves 7 are arranged on the outer wall of the bolt 6 in a ring shape and at equal angles, the number of the clamping grooves 8 is multiple, the multiple clamping grooves 8 are arranged on the inner wall of the grooves 7 in a straight line and at equal intervals, so that when the clamping blocks 5 are clamped in the grooves 7, the stability of the friction piece 3 is improved.

[0033] Working principle: in use, the first nut 1 is first screwed on the surface of the bolt 6, then the second nut 2 is installed above the first nut 1, and the top of the first nut 1 and the bottom of the second nut 2 are attached, the friction piece 3 on the top of the first nut 1 is extruded by the inclined groove 4 at the bottom of the second nut 2, so that the friction piece 3 is subjected to axial and radial pressure, a large contact pressure is formed between the friction piece 3, the first nut 1 and the bolt 6, and the friction piece 3 is tightly attached to the surface of the bolt 6, so as to increase the friction between the first nut 1 and the bolt 6, prevent the first nut 1 from loosening and falling off the surface of the bolt 6, achieve the effect of preventing loosening, and ensure the installation reliability and safety of the equipment.

[0034] On the basis of the above work, when the first nut 1 rotates, the friction piece 3 will also rotate relative to the bolt 6, the friction piece 3 deforms when it rotates due to extrusion by the surface of the bolt 6, and will not hinder the rotation of the first nut 1, and the clamping blocks 5 on the surface of the friction piece 3 are clamped in the clamping grooves 8, so as to improve the stability of the friction piece 3 staying in the grooves 7, and ensure the stability of the installation.

[0035] Finally, it should be noted that: the above only describes preferred embodiments of the present application, and is not intended to limit the present application, although the present application 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 replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A locking nut comprising a first nut (1) and a second nut (2), characterized in that: The top of the first nut (1) and the bottom of the second nut (2) are attached, the top of the first nut (1) is provided with an anti-loosening mechanism, the anti-loosening mechanism comprises a friction piece (3), the friction piece (3) is fixedly installed on the top of the first nut (1), the top of the second nut (2) is provided with an inclined groove (4), one end of the friction piece (3) away from the first nut (1) is fixedly connected with a clamping block (5), and the inside of the first nut (1) is provided with a bolt (6).

2. A locking nut according to claim 1 wherein: The number of the friction pieces (3) is multiple, and the multiple friction pieces (3) are arranged in an annular equiangular interval on the top of the first nut (1).

3. The lock nut of claim 1 wherein: The friction piece (3) is made of elastic rubber material.

4. The lock nut of claim 1 wherein: The surface of the bolt (6) is provided with a groove (7), and the inner wall of the groove (7) is provided with a clamping groove (8).

5. A locking nut according to claim 4 wherein: The number of the grooves (7) is multiple, and the multiple grooves (7) are arranged in an annular equiangular interval on the outer wall of the bolt (6).

6. A lock nut according to claim 5 wherein: The number of the clamping grooves (8) is multiple, and the multiple clamping grooves (8) are arranged in a straight line at equal intervals on the inner wall of the groove (7).

7. The lock nut of claim 1 wherein: The inside of the first nut (1) is provided with a thread groove one (9), and the inside of the second nut (2) is provided with a thread groove two (10).

8. The lock nut of claim 1 wherein: The friction piece (3) is arranged in an inclined state.

Images