Round nut locking mechanism

Abstract

The utility model relates to the technical field of mechanical assembly, in particular to a round nut locking mechanism which is characterized in that a round nut is used for being installed on a threaded connection portion of a connected piece, a plurality of clamping grooves are formed in the threaded connection portion of the connected piece, a protruding ring is arranged on the end face of one side of the round nut, and when the round nut is installed on the threaded connection portion of the connected piece, the clamping grooves are clamped in the protruding ring. The convex ring is sleeved on the outer side of the clamping groove, and part of the convex ring can be knocked into the clamping groove; the utility model has the advantages that as long as the pre-tightening is reasonable and meets the clearance requirement, the thin edge of the nut is knocked into the shaft head chute and the rotation of the nut is limited, the clearance of the round nut can be more accurately adjusted without dead angle limitation, the whole locking and positioning process is convenient and quick, the requirement on the machining precision of parts is reduced, and the use of stop washers can be reduced; the phenomena of wrong assembly and neglected assembly in the assembly process are avoided, and the assembly quality is effectively controlled.

Description

Technical Field

[0001] This utility model relates to the field of mechanical assembly technology, and in particular to a round nut locking mechanism. Background Technology

[0002] In the assembly of shaft parts, precise clearance adjustment and reliable axial positioning are key factors in ensuring the normal operation of the equipment. Traditionally, to achieve these requirements, retaining ring positioning or round nut locking positioning methods are commonly used. For example, a threaded safety groove is milled at the threaded part of the shaft end, and a retaining washer and a round nut are installed. Locking is achieved by driving the retaining plate on the retaining washer into the retaining groove on the round nut. Although this method can meet certain positioning requirements, it has directional and clearance requirements, and is not convenient enough for assembling complex parts, especially in situations where the end face clearance requirements are extremely high.

[0003] For example, patent CN109114092B proposes an anti-loosening and anti-reverse nut, which achieves locking by setting multiple washers between the nut and the connected parts, with the locking pieces on the washers interlocking with each other. Although the locking effect is excellent, it requires high processing precision and is complicated to assemble, making it unsuitable for occasions with extremely high end face clearance requirements.

[0004] The industry has been seeking an end-face locking and anti-loosening mechanism that is easy to use and requires minimal processing, in order to simplify the structure, reduce costs, and improve assembly efficiency. However, most current designs are still constrained by traditional thinking, focusing on improving the locking washer, but failing to fundamentally solve the aforementioned problems.

[0005] Therefore, this case is brought. Utility Model Content

[0006] The purpose of this invention is to provide a round nut locking mechanism to reduce machining precision and improve assembly efficiency.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows:

[0008] A round nut locking mechanism is provided. The round nut is used to install into the threaded connection part of the connected parts. The threaded connection part of the connected parts is provided with a plurality of slots. A protruding ring is provided on one end face of the round nut. When the round nut is installed into the threaded connection part of the connected parts, the protruding ring is sleeved on the outside of the slots. Part of the protruding ring can be knocked into the slots.

[0009] Furthermore, the slot adopts an inclined slot structure.

[0010] Furthermore, the inner diameter of the convex ring is defined as d1, and the outer diameter of the threaded connection part of the connected parts is defined as d2, where d1-d2=0.5mm.

[0011] Furthermore, the round nut has a groove on its circumference to facilitate the application of force.

[0012] Furthermore, the slot adopts a straight slot structure.

[0013] The advantages of this utility model are: as long as the pre-tightening is reasonable and meets the clearance requirements, the thin edge of the nut is hammered into the inclined groove of the shaft head to restrict the rotation of the nut. The round nut can be adjusted more precisely in terms of clearance without dead angle restrictions. The whole locking and positioning process is convenient and quick, and the requirements for the machining accuracy of the parts are reduced. At the same time, the use of locking washers can be reduced, avoiding misassembly and omission during the assembly process, and effectively controlling the assembly quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the shaft head portion of the connected component in the embodiment;

[0015] Figure 2 for Figure 1 AA section view diagram;

[0016] Figure 3 This is a schematic diagram of the structure of the round nut in the embodiment;

[0017] Figure 4 for Figure 3 AA section view diagram;

[0018] Figure 5 This is a schematic diagram of the assembly of the round nut and the shaft end of the connected component in the embodiment;

[0019] Label Explanation

[0020] 1. Shaft head; 101. Inclined groove; 2. Round nut; 201. Raised ring; 202. Groove. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the embodiments. It should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" etc. indicated by the accompanying drawings are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0022] This embodiment proposes a round nut locking mechanism. The round nut 2 needs to be installed onto the threaded connection part of the connected parts to achieve locking. In this embodiment, the threaded connection part of the connected parts is the threaded connection part of the shaft head 1, and the round nut 2 needs to be assembled onto the threaded connection part of the shaft head 1 for locking.

[0023] likeFigure 1 and Figure 2 As shown, the locking mechanism of this embodiment includes two inclined grooves 101 formed at the threaded connection portion of the shaft head 1. The alignment requirements for these two inclined grooves 101 are not high, and they are easy to process. Figure 3 and Figure 4 As shown, the locking mechanism also includes a round nut 2. A raised ring 201 is provided on one end face of the round nut 2. The raised ring 201 has a thin edge, and its inner diameter is approximately 0.5 mm larger than the outer diameter of the threaded connection part of the shaft head 1, thus achieving coarse positioning when the round nut 2 is screwed in. Figure 1 and Figure 4 As shown, in this embodiment, the outer diameter of the threaded connection part of the shaft head 1 is 40mm, and the inner diameter of the convex ring 201 is 40.5mm.

[0024] like Figure 5 As shown, during installation, the round nut 2 is screwed into the shaft head 1 for pre-tightening. After pre-tightening, the convex ring 201 fits perfectly on the outside of the inclined groove 101. The convex ring 201 is then tapped, causing a portion of it to enter the inclined groove 101, thus locking it in place. This tapping of the convex ring 201 into the inclined groove 101 not only restricts the rotational freedom of the round nut 2, preventing it from loosening, but also eliminates the need to consider the directional and clearance limitations of traditional methods during the entire assembly process, achieving positioning without any blind spots.

[0025] In this embodiment, the groove for milling the threaded connection part of the shaft head 1 is a slanted groove 101 instead of other groove shapes. This is mainly because the slanted groove 101 does not have high centering requirements and is easier to process. At the same time, the slanted surface of the slanted groove 101 can better cooperate with the convex ring 201. When the convex ring 201 is hammered in, the slanted surface of the slanted groove 101 can fit against the hammered part of the convex ring 201, improving the locking effect.

[0026] As a preferred option, the outer ring of the round nut 2 is milled with four straight grooves to form a slot 202. This slot 202 is used for locking force, so it does not require the slots to be evenly distributed as in traditional round nuts (traditional round nuts are milled to allow the stop edge to be embedded in the slot for easy clearance measurement, so there is a requirement for the slots to be evenly distributed).

[0027] In this embodiment, the machining accuracy of parts can be reduced, thereby improving efficiency, reducing assembly costs, avoiding assembly errors and omissions, and ensuring precise axial clearance adjustment without blind spots. The operation is also convenient, and this solution is worth promoting and applying.

[0028] The above embodiments are only used to explain the concept of this utility model, and are not intended to limit the protection of this utility model. Any non-substantial modifications made to this utility model using this concept should fall within the protection scope of this utility model.

Claims

1. A round nut locking mechanism for a round nut for mounting to a threaded connection portion of a connected member, characterized by, The threaded connection part of the connected part is provided with a plurality of clamping grooves, and a convex ring is arranged on one side end face of the round nut, when the round nut is installed to the threaded connection part of the connected part, the convex ring is sleeved outside the clamping grooves, and part of the convex ring can be knocked into the clamping grooves.

2. A round nut locking mechanism as claimed in claim 1, wherein, The clamping grooves adopt inclined groove structures.

3. A round nut locking mechanism as claimed in claim 1, wherein, The inner diameter of the convex ring is defined as d1, and the outer diameter of the threaded connection part of the connected part is defined as d2, and d1-d2=0.5 mm.

4. A round nut locking mechanism as claimed in claim 1, wherein, A circumferential slot is arranged on the round nut, and the slot is convenient for force application.

5. A round nut locking mechanism as claimed in claim 4, wherein, The slot adopts a straight slot structure.

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