Locking nut

Abstract

The utility model discloses a locking nut which comprises a hexagonal screw body, a screw hole is formed in the hexagonal screw body, a gasket is arranged on one side of the hexagonal screw body, an annular chamfer face is arranged on the other side of the hexagonal screw body, a plurality of pressing grooves are formed in the other side of the hexagonal screw body, and the pressing grooves extend to the annular chamfer face from the screw hole. The side face of the gasket is the conical face inclining inwards, the machining amount of the nut is small, no other parts are arranged except the nut, and therefore the manufacturing cost of the nut is lower than that of a traditional self-locking nut at present.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fastener, more particularly relates to a locking nut. BACKGROUND

[0002] The working principle of the existing self-locking nut is generally to realize locking by friction force, and most of the self-locking nuts mainly include embedding nylon ring, neck closing and adding metal anti-loosening device in the nut.

[0003] However, these nuts are more expensive than ordinary nuts due to more processing steps and more parts on the nut, and can only be used in equipment or devices that require anti-loosening, and ordinary nuts are used in some simple machines or equipment with small vibration, so the anti-loosening effect cannot be achieved, which is not conducive to the use of equipment and machines.

[0004] Therefore, it is necessary to provide a locking nut with less processing amount, fewer parts, low cost and certain self-locking ability. UTILITY MODEL CONTENT

[0005] In view of the deficiencies of the prior art, the utility model provides a locking nut, which has less processing amount and no other parts except the nut itself, so that the manufacturing cost of the nut is lower than that of the traditional self-locking nut.

[0006] To achieve the above object, the utility model provides the following technical scheme: a locking nut, comprising a hexagonal screw body, a screw hole is arranged on the hexagonal screw body, a gasket is arranged on one side of the hexagonal screw body, an annular chamfer surface is arranged on the other side of the hexagonal screw body, a plurality of pressing grooves are arranged on the other side of the hexagonal screw body, the pressing grooves extend from the screw hole to the annular chamfer surface, and the side surface of the gasket is a conical surface inclined inward.

[0007] Further, the position of the pressing groove on the annular chamfer surface corresponds to the angle of the hexagonal screw body, that is, the number of pressing grooves is greater than or equal to 1 and less than or equal to 6.

[0008] Further, the width of the pressing groove is less than the distance between two adjacent hexagonal surfaces on the hexagonal screw body at the screw hole.

[0009] Further, the depth of the pressing groove on the side surface of the hexagonal screw body is 0.1mm-0.5mm.

[0010] Further, the inclination angle of the conical surface is 0.2-1 degrees.

[0011] Compared with the prior art, the hexagonal screw body is provided with a pressing groove, the thread spacing in the screw hole is slightly extruded, the thread spacing corresponding to the axial direction of the pressing groove is slightly reduced, when the hexagonal screw body is screwed on the bolt, the friction between the bolt thread and the screw thread is increased through the slightly reduced thread spacing, when the nut is screwed on the surface of the part, the inner thread of the screw hole and the outer thread of the bolt generate greater friction through the conical surface on the gasket, thereby achieving locking, the nut has less processing amount, no other components except the nut itself, and the manufacturing cost of the nut is lower than that of the traditional self-locking nut. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a side structure schematic view of the locking nut of the utility model;

[0013] Figure 2 It is a side structure schematic view of the locking nut of the utility model; Figure 1 It is an enlarged view of A part in the middle;

[0014] Figure 3 It is a side structure schematic view of the locking nut of the utility model; Figure 1 It is a method view of B part in the middle;

[0015] Figure 4 It is a front structure schematic view of the locking nut of the utility model.

[0016] The figure sign: hexagonal screw body 1;Screw hole 2;Gasket 3;Annular chamfer 4;Pressing groove 5;Conical surface 6. DETAILED DESCRIPTION

[0017] In the description of the utility model, it needs to be explained that for the orientation words, such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the utility model.

[0018] In addition, if the terms "first", "second" are used for description purposes only, they cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first", "second" features can be explicitly or implicitly included one or more features, and in the description of the utility model, the meaning of "several", "several" is two or more than two, unless otherwise specifically limited.

[0019] Reference Figures 1 to 4The utility model further illustrates.

[0020] A lock nut, including hexagonal screw body 1, be provided with screw hole 2 on hexagonal screw body 1, the one side of hexagonal screw body 1 is provided with gasket 3, the other side of hexagonal screw body 1 is provided with annular chamfer 4, the other side of hexagonal screw body 1 is provided with several pressure groove 5, pressure groove 5 extends from screw hole 2 to annular chamfer 4, the side of gasket 3 is the conical surface 6 that inclines inwards.

[0021] As Figures 1 to 4 Shown, in the production hexagonal screw body 1, through mould makes the side of gasket 3 on hexagonal screw body 1 side conical surface 6, then again on the other side of hexagonal screw body 1 press out pressure groove 5, and in the process of pressure groove 5 shaping, slightly extrude the thread spacing in screw hole 2, make the thread spacing of axial correspondence with pressure groove 5 slightly reduce, thus in use, hexagonal screw body 1 is rotated on bolt when can pass through slightly reduced thread spacing and improve the friction between bolt thread, and when nut is tightened on the surface of part, through the conical surface 6 on gasket 3 makes the internal thread of screw hole 2 and bolt external thread produce greater friction, to realize locking.

[0022] The above-mentioned nut not only has less processing amount, has no other parts except the nut itself, so that the manufacturing cost of the nut is lower than the current traditional self-locking nut.

[0023] As Figure 1 Shown, in the present case, preferably, the position of pressure groove 5 on annular chamfer 4 corresponds to the angle of hexagonal screw body 1, that is, the number of pressure groove 5 is greater than or equal to 1 and less than or equal to 6.

[0024] Specifically, pressure groove 5 can be set to three circumferential directions as Figure 4 Shown, also can be set to six circumferential directions, or set to two, two are symmetrically arranged.

[0025] As Figure 1 Shown, in the present case, preferably, the width of pressure groove 5 is less than the distance of adjacent two hexagonal faces on hexagonal screw body 1 at screw hole 2, that is, Figure 4 L in the middle.

[0026] In the present case, preferably, the depth of pressure groove 5 on the side of hexagonal screw body 1 is 0.1mm-0.5mm.

[0027] In the present case, preferably, the inclination angle of conical surface 6 is 0.2 degrees-1 degree.

[0028] The above merely is preferred implementation manner of the present application, the protection scope of the present application is not only limited to the above examples, and belongs to the technical scheme under the idea of the present application all belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled person in the art, under the premise of not departing from the principle of the present application, some improvements and decorations, these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. A lock nut characterized by: The hexagonal screw body is provided with a screw hole, one side of the hexagonal screw body is provided with a gasket, the other side of the hexagonal screw body is provided with an annular chamfer surface, and the other side of the hexagonal screw body is provided with a plurality of pressing grooves extending from the screw hole to the annular chamfer surface, and the side surface of the gasket is an inwardly inclined conical surface.

2. The lock nut of claim 1, wherein: The position of the pressing groove on the annular chamfer surface corresponds to the angle of the hexagonal screw body, that is, the number of pressing grooves is greater than or equal to 1 and less than or equal to 6.

3. The lock nut of claim 1, wherein: The width of the pressing groove is less than the distance between two adjacent hexagonal surfaces on the hexagonal screw body at the screw hole.

4. The lock nut of claim 1, wherein: The depth of the pressing groove on the side surface of the hexagonal screw body is 0.1mm-0.5mm.

5. The lock nut of claim 1, wherein: The inclination angle of the conical surface is 0.2-1 degrees.

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