Lock nut assembly

Abstract

The utility model provides a locknut assembly which comprises a nut body and further comprises an outer fixing sleeve, the outer side of the nut body is sleeved with the outer fixing sleeve, the outer fixing sleeve and the nut body are fixedly connected in the circumferential direction of the nut body, and limiting holes penetrating through the two sides of an outer fixing strip are formed in the outer fixing strip. The nut is sleeved with the outer fixing sleeve fixed to the nut in the circumferential direction, the outer fixing sleeve is provided with the structure capable of being fixedly connected with the fixing face, and therefore rotation of the nut is stopped, rotation of the nut is stopped, and the anti-loosening purpose is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a locking nut assembly. Background Art

[0002] A nut is a nut that is screwed together with a bolt or a screw to tighten. A nut is a part that tightly connects mechanical equipment. Nuts and bolts of the same specifications can only be connected together through the inner thread.

[0003] After long-term use, the nut is easily loosened due to the vibration of mechanical equipment, resulting in the connection between the bolt and the nut not being tight enough, thus affecting the operation of the machine.

[0004] Therefore, it is necessary to design a locking nut. If a limiting hole parallel to the axial direction can be set on the nut, and the hole is connected with the hole on the fixed surface to form a limiting structure, the rotation of the nut can be prevented, thereby achieving the purpose of locking. However, setting the above-mentioned limiting hole on the nut will destroy the overall structure of the nut and affect the structural strength of the nut, so how to set the above-mentioned limiting hole is a problem that needs to be considered. Utility Model Content

[0005] In view of the problems pointed out in the background technology, the utility model proposes a locking nut assembly to solve the above technical problems.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A locking nut assembly comprises a nut body and an external fixing sleeve, wherein the external fixing sleeve is sleeved on the outside of the nut body, and the external fixing sleeve and the nut body are fixedly connected in the circumferential direction of the nut body, and the external fixing strip is provided with limiting holes penetrating through both sides thereof.

[0008] The utility model is further configured that the nut body is a hexagonal nut, the outer fixing sleeve is cylindrical, and the inner side of the outer fixing sleeve is provided with a hexagonal through hole adapted to the nut body.

[0009] The utility model is further configured that a plurality of limiting holes are provided, and the plurality of limiting holes are arranged at intervals in the circumferential direction of the nut body.

[0010] The utility model is further configured that a notch groove is provided on the outer side wall of the external fixing sleeve, and the notch groove is arranged through both ends of the external fixing sleeve.

[0011] The utility model is further configured that a limiting pin is connected in the limiting hole.

[0012] The utility model is further configured such that the nut body is adaptably connected to the inner side of the outer fixing sleeve.

[0013] The utility model is further configured that an annular limiting abutment ring is provided on the inner side wall of the outer fixing sleeve.

[0014] The utility model is further configured that the limiting abutment ring is provided with a dividing groove, and the dividing groove is provided in plurality and is arranged at intervals in the circumferential direction of the limiting abutment ring.

[0015] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0016] The anti-loosening nut assembly provided by the utility model has an outer fixing sleeve disposed outside the nut and fixed to the nut in the circumferential direction, and a structure that can be fixedly connected to the fixing surface is disposed on the outer fixing sleeve, thereby preventing the nut from rotating and achieving the purpose of preventing the nut from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is an exploded schematic diagram of the utility model.

[0020] Figure 3 It is a side view of the utility model.

[0021] Figure 4 For the utility model Figure 3 AA section view in.

[0022] Figure 5 For the utility model Figure 3 BB section view in.

[0023] Description of the reference numerals in the accompanying drawings: nut body 1 , outer fixing sleeve 2 , limiting hole 21 , notch groove 22 , limiting abutment ring 23 , breaking groove 24 , limiting pin 3 . DETAILED DESCRIPTION

[0024] 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.

[0025] For reference Figure 1-5 The utility model is described as follows:

[0026] Embodiment 1: A locking nut assembly comprises a nut body 1, wherein the nut body 1 is a hexagonal nut.

[0027] It also includes an outer fixing sleeve 2, which is cylindrical. The inner side of the outer fixing sleeve 2 is provided with a hexagonal through hole adapted to the nut body 1. The outer fixing sleeve 2 is sleeved on the outer side of the nut body 1, and the nut body 1 is adapted to be connected to the inner side of the outer fixing sleeve 2. Through the hexagonal structure, the outer fixing sleeve 2 and the nut body 1 are fixedly connected in the circumferential direction of the nut body 1.

[0028] The outer fixing sleeve 2 is provided with limiting holes 21 that pass through both sides thereof. The central axis of the limiting hole 21 is arranged parallel to the central axis of the nut body 1. There are six limiting holes 21, and the six limiting holes 21 are arranged at intervals in the circumferential direction of the nut body 1. After the nut body 1 is tightened with the bolt, the nut body 1 abuts against the surface of the part or component, and a groove or concave hole structure corresponding to the limiting hole 21 is arranged on the surface of the part or component. A limiting pin 3 is connected inside the limiting hole 21, and the limiting pin 3 enters the groove or concave hole structure on the surface of the part to form a structure that prevents the outer fixing sleeve 2 from rotating, thereby achieving the purpose of preventing the nut body 1 from loosening. The limiting pin 3 can form an interference connection with the limiting hole 21 and the groove or concave hole, so as to form a fixed connection, or the groove or concave hole is provided with an internal thread, and the limiting pin 3 forms a threaded connection with the groove or concave hole.

[0029] The positions of the grooves or recessed holes on the surface of the component correspond to the positions of the limiting holes 21 , but the number does not correspond. The number of the grooves or recessed holes may be one or two.

[0030] The outer wall of the outer fixing sleeve 2 is provided with a notch groove 22, which is set through both ends of the outer fixing sleeve 2. By adopting the above technical solution, when the outer fixing sleeve 2 is welded and fixed to the surface of the component, the notch groove 22 can be used to accommodate solder, so that the welding between the outer fixing sleeve 2 and the surface of the component is more firm and stable. There are six notch grooves 22, and the six notch grooves 22 are arranged at intervals in the circumferential direction of the outer fixing sleeve 2.

[0031] An annular limiting abutment ring 23 is provided on the inner side wall of the outer fixing sleeve 2. The hole in the middle of the limiting abutment ring 23 is smaller than the threaded hole in the middle of the nut body 1. The nut body 1 abuts against the surface of the component through the limiting abutment ring 23. The limiting abutment ring 23 plays a role as a gasket and can prevent the outer fixing sleeve 2 from loosening along the axial direction of the nut body 1. The limiting abutment ring 23 is provided with a breaking groove 24. There are multiple breaking grooves 24 and they are arranged at intervals in the circumferential direction of the limiting abutment ring 23. The breaking grooves 24 can enhance the deformation ability of the limiting abutment ring 23 and enhance its ability to serve as a gasket.

[0032] 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 locking nut assembly, comprising a nut body (1), characterized in that: The invention also comprises an outer fixing sleeve (2), wherein the outer fixing sleeve (2) is sleeved on the outer side of the nut body (1), and the outer fixing sleeve (2) and the nut body (1) are fixedly connected in the circumferential direction of the nut body (1), and the outer fixing sleeve (2) is provided with limiting holes (21) penetrating through both sides thereof.

2. A locking nut assembly according to claim 1, characterized in that: The nut body (1) is a hexagonal nut, the outer fixing sleeve (2) is cylindrical, and the inner side of the outer fixing sleeve (2) is provided with a hexagonal through hole adapted to the nut body (1).

3. A locking nut assembly according to claim 2, characterized in that: There are a plurality of limiting holes (21), and the plurality of limiting holes (21) are arranged at intervals in the circumferential direction of the nut body (1).

4. The anti-loosening nut assembly according to claim 1, characterized in that: A notch groove (22) is provided on the outer side wall of the outer fixing sleeve (2), and the notch groove (22) is provided through both ends of the outer fixing sleeve (2).

5. The anti-loosening nut assembly according to claim 1, characterized in that: A limiting pin (3) is connected inside the limiting hole (21).

6. The anti-loosening nut assembly according to claim 1, characterized in that: The nut body (1) is adaptably connected to the inner side of the outer fixing sleeve (2).

7. The anti-loosening nut assembly according to claim 1, characterized in that: An annular limiting abutment ring (23) is provided on the inner side wall of the outer fixing sleeve (2).

8. The anti-loosening nut assembly according to claim 7, characterized in that: The limiting abutment ring (23) is provided with a dividing groove (24), and a plurality of the dividing grooves (24) are provided and are arranged at intervals in the circumferential direction of the limiting abutment ring (23).

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