Combined piece of follow-up rotation preventing nut and gasket

Abstract

The utility model discloses an anti-following-rotation nut and gasket assembly which comprises a nut and a gasket, a plurality of steel balls are circumferentially distributed on the end face of the nut with the axis of the nut as the center, an annular oil groove used for containing lubricating oil is formed in the gasket, and the steel balls correspond to the annular oil groove. A rubber ring is arranged on the side, back on to the nut, of the gasket. A locking assembly is arranged on the nut and used for supporting a bolt in threaded connection with the interior of the nut. The device has the advantages that the gasket is pressed by rotating the nut, so that an object is fixedly installed, the nut is prevented from making direct contact with the gasket through cooperation of the steel ball and the annular oil groove, the steel ball and the annular oil groove are in point contact or not in surface contact, and meanwhile the contact point of the steel ball and the annular oil groove is lubricated by lubricating oil; friction force between the steel ball and the annular oil groove is further reduced, the gasket cannot rotate along with the nut, and therefore the gasket is prevented from rotating to damage the surface of an object.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, in particular to a combination of an anti-rotation nut and a washer. Background Art

[0002] During the product assembly process, many nuts are used. During the assembly process, the washers will rotate with the nuts due to the large tension and friction. Since the washers are in direct contact with the product surface, the rotation of the washers can easily scratch the product surface or damage the anti-corrosion and anti-rust layer on the product surface, affecting the anti-corrosion ability at that location, and thus affecting the performance of the entire product. Utility Model Content

[0003] The purpose of the present utility model is to provide an assembly of an anti-rotation nut and a washer in order to solve the above-mentioned problem, as described in detail below.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model provides an anti-rotation nut and washer assembly, comprising a nut and a washer, wherein a plurality of steel balls are distributed on the end surface of the nut around the nut axis, and an annular oil groove for placing lubricating oil is provided on the washer, and the steel balls correspond to the annular oil groove;

[0006] A rubber ring is arranged on the side of the washer facing away from the nut;

[0007] The nut is provided with a locking assembly for supporting a bolt threadedly connected in the nut.

[0008] The above-mentioned combination of an anti-rotation nut and a washer is used. The washer is first placed so that the rubber ring on the washer contacts the surface of the object. Then, lubricating oil is applied to the annular oil groove. Finally, the nut is installed and the nut is rotated so that the nut presses the washer tightly, thereby achieving fixed installation of the object. When the nut is rotated to press the washer tightly, the nut does not contact the washer directly, but contacts the annular oil groove through the steel ball. Since the steel ball and the annular oil groove are in point contact rather than surface contact, and the contact point between the two is lubricated by lubricating oil, the friction between the steel ball and the annular oil groove is very small, and the washer will not rotate with the nut.

[0009] Preferably, the steel ball contacts the inner and outer edges of the annular oil groove, but does not contact the inner wall of the annular oil groove.

[0010] Preferably, a plurality of anti-slip grooves are formed on a side of the rubber ring facing away from the nut.

[0011] Preferably, the locking assembly includes a plurality of fixing pins, a plurality of threaded holes are formed through the side wall of the nut, and the fixing pins are threadedly connected in the threaded holes.

[0012] Preferably, a friction pad is provided at the end of the fixing pin facing the interior of the nut, and a hexagonal groove is provided at the other end of the fixing pin.

[0013] Preferably, the end of the fixing pin facing the outer surface of the nut does not protrude from the threaded hole.

[0014] Preferably, the surfaces of the nut and the washer are provided with an anti-rust coating.

[0015] Preferably, the steel ball is fixed on the nut.

[0016] The beneficial effects are:

[0017] 1. The object is fixedly installed by rotating the nut to compress the washer. The steel ball cooperates with the annular oil groove to avoid direct contact between the nut and the washer. The steel ball and the annular oil groove are in point contact, not surface contact. At the same time, the lubricating oil lubricates the contact point between the two, further reducing the friction between the steel ball and the annular oil groove, so that the washer cannot rotate with the nut, thereby preventing the washer from rotating and damaging the surface of the object;

[0018] 2. Setting the rubber ring can increase the friction between the gasket and the surface of the object, and can prevent the gasket from wearing the surface of the object;

[0019] 3. The locking assembly supports the surface of the bolt installed on the nut, thereby improving the stability of the nut installed on the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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 work.

[0021] Figure 1 This is a front view structural diagram of the utility model;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 3 This is a schematic diagram of the front cross-sectional structure of the gasket of the utility model;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the nut of the utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the gasket of the utility model;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the rubber ring of the utility model.

[0027] The following are the descriptions of the reference numerals:

[0028] 1. Nut; 2. Locking assembly; 3. Washer; 4. Rubber ring; 5. Annular oil groove; 6. Steel ball; 7. Fixing pin; 8. Hexagonal groove; 9. Friction pad; 10. Anti-slip pattern. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. 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 implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0030] See also Figure 1-Figure 6 As shown, the utility model provides an assembly of an anti-rotation nut and a washer, comprising a nut 1 and a washer 3, a plurality of steel balls 6 are distributed on the end surface of the nut 1 around the axis of the nut 1, an annular oil groove 5 for placing lubricating oil is provided on the washer 3, the steel balls 6 correspond to the annular oil groove 5, and the friction generated by the direct contact between the nut 1 and the washer 3 can be reduced by the cooperation between the steel balls 6 and the annular oil groove 5;

[0031] A rubber ring 4 is provided on the side of the washer 3 facing away from the nut 1. The rubber ring 4 can increase the friction between the washer 3 and the surface of the object and prevent the washer 3 from wearing the surface of the object.

[0032] A locking assembly 2 is provided on the nut 1 for supporting a bolt threadedly connected in the nut 1 . The locking assembly 2 can improve the stability of the nut 1 installed on the bolt.

[0033] As an optional implementation, the steel ball 6 contacts the inner and outer edges of the annular oil groove 5 but does not contact the inner wall of the annular oil groove 5. This can reduce the contact area and thus reduce the friction of the steel ball 6 when it moves with the nut 1 on the annular oil groove 5.

[0034] A plurality of anti-slip grooves 10 are formed on the side of the rubber ring 4 facing away from the nut 1 , so as to further increase the friction between the rubber ring 4 and the surface of the object.

[0035] The locking assembly 2 includes a plurality of fixing pins 7. A plurality of threaded holes are formed through the side wall of the nut 1, and the fixing pins 7 are threadedly connected in the threaded holes. The fixing pins 7 are rotated so that their ends support the surface of the bolt, thereby improving the stability of the nut 1 installed on the bolt surface.

[0036] A friction pad 9 is provided at the end of the fixing pin 7 facing the inside of the nut 1, and a hexagonal groove 8 is provided at the other end of the fixing pin 7 to facilitate rotating the fixing pin 7 with a hexagonal wrench. The friction pad 9 can increase the friction force between the fixing pin 7 and the bolt.

[0037] The end of the fixing pin 7 facing the outer surface of the nut 1 does not protrude from the threaded hole, so that the fixing pin 7 can be prevented from interfering with the rotation of the nut 1 using a wrench.

[0038] The surfaces of the nut 1 and the washer 3 are provided with an anti-rust coating.

[0039] The steel ball 6 is fixed on the nut 1 .

[0040] With the above structure, the washer 3 is first placed so that the rubber ring 4 on the washer 3 contacts the surface of the object, and then the lubricating oil is applied to the annular oil groove 5. Finally, the nut 1 is installed and the nut 1 is rotated so that the nut 1 presses the washer 3, thereby achieving fixed installation of the object. When the nut 1 is rotated to press the washer 3, the nut 1 does not contact the washer 3 directly, but contacts the annular oil groove 5 through the steel ball 6. Since the steel ball 6 and the annular oil groove 5 are in point contact, not surface contact, and the contact point between the two is lubricated by the lubricating oil, the friction between the steel ball 6 and the annular oil groove 5 is very small, and the washer 3 does not rotate with the nut 1.

[0041] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An assembly of an anti-rotation nut and a washer, characterized in that: It comprises a nut (1) and a washer (3), wherein a plurality of steel balls (6) are distributed on the end surface of the nut (1) around the axis of the nut (1), and an annular oil groove (5) for storing lubricating oil is formed on the washer (3), and the steel balls (6) correspond to the annular oil groove (5); A rubber ring (4) is provided on the side of the washer (3) facing away from the nut (1); The nut (1) is provided with a locking assembly (2) for supporting a bolt threadedly connected in the nut (1).

2. The assembly of an anti-rotation nut and a washer according to claim 1, characterized in that: The steel ball (6) contacts the inner and outer edges of the annular oil groove (5) but does not contact the inner wall of the annular oil groove (5).

3. The assembly of an anti-rotation nut and a washer according to claim 1, characterized in that: A plurality of anti-slip grooves (10) are formed on the side of the rubber ring (4) facing away from the nut (1).

4. The assembly of an anti-rotation nut and a washer according to claim 1, characterized in that: The locking assembly (2) comprises a plurality of fixing pins (7), and a plurality of threaded holes are formed through the side wall of the nut (1), and the fixing pins (7) are threadedly connected in the threaded holes.

5. The assembly of an anti-rotation nut and a washer according to claim 4, characterized in that: A friction pad (9) is provided at the end of the fixing pin (7) facing the interior of the nut (1), and a hexagonal groove (8) is provided at the other end of the fixing pin (7).

6. The assembly of an anti-rotation nut and a washer according to claim 5, characterized in that: The end of the fixing pin (7) facing the outer surface of the nut (1) does not protrude from the threaded hole.

7. The assembly of an anti-rotation nut and a washer according to claim 1, characterized in that: The surfaces of the nut (1) and the washer (3) are provided with an anti-rust coating.

8. The assembly of an anti-rotation nut and a washer according to claim 1, characterized in that: The steel ball (6) is fixed on the nut (1).

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