SINGLE RING TYPE LOCKNUT ASSEMBLY

Abstract

Disclosed is a ring type locknut, where a frustum-shaped internal thread concave cavity is arranged on a nut, inside which an annular member with frustum-shaped internal and external threads matching the concave cavity nut is provided, an eccentric value based on a specification thread fit clearance is set between internal threads and external threads of the annular member, so that when the annular member is screwed into a bolt together with the nut for locking, the expected objective that the nut will not loosen by only locking a single structure is achieved thanks to a comprehensive effect of the formed original nut structure, the eccentricity of the annular member and the structure of multiple properties of the tapered thread; the single-structure nut is used in a superposed mode, or the annular member is arranged on another nut, so that the overall anti-loosening effect is improved by the double-nut structure.

Claims

1. A single ring type locknut assembly, wherein the assembly comprises a nut provided with a frustum-shaped internal thread concave cavity and an outer frustum-shaped annular member arranged therein, an eccentric value based on eliminating a specification thread fit clearance of a standard specification size of the nut is set between internal threads and external threads of the annular member, the eccentric value is a clearance existing when the internal thread of the nut is matched with a bolt, and the fit clearance between frustum-shaped internal threads and tapered external threads of the annular member is also considered, so that when the annular member is screwed into a bolt together with the nut for locking, the expected objective that the nut will not loosen by only locking a single structure is achieved thanks to a comprehensive structural effect of the formed and retained original nut structure, the eccentricity of the annular member and the structure of multiple properties of the tapered thread.

2. The single ring type locknut assembly according to claim 1, wherein the locking surface of the nut against the annular member is provided with a one-way retaining anti-loosening structure, so as to facilitate the improvement of the anti-loosening effect of the nut assembly.

3. The single ring type locknut assembly according to claim 2, wherein the lower end surface of the nut is provided with a one-way retaining anti-loosening structure, and the one-way retaining anti-loosening structure matches with a retaining annular locking washer, so as to facilitate the improvement of the anti-loosening effect of the nut assembly.

4. The single ring type locknut assembly according to claim 1, wherein the nut can be designed into a special specification by increasing the overall structural size, so as to further facilitate the improvement of the anti-loosening effect of the nut assembly.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG. 1 a schematic diagram of a single structure of a ring type locknut of the present invention. [0013] In the figure: 1. concave cavity nut; 2. annular member; and 3. bolt.

[0014] FIG. 2 a schematic diagram of a ring type locknut with slight change in the structure of the present invention. [0015] In the figure: 1. concave cavity nut; 2. boss nut; and 3. bolt.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] A ring type locknut is further described below in conjunction with the schematic diagram.

[0017] Embodiment 1: a single structure of a ring type locknut as shown in FIG. 1, where a frustum-shaped internal thread concave cavity is arranged on a nut to form an overall concave cavity nut 1, an annular member 2 with frustum-shaped internal and external threads matching the concave cavity nut 1 is arranged inside the concave cavity thereof, the taper of the tapered thread is set to be 3 degrees, an eccentric value based on eliminating a specification thread fit clearance is set between internal threads and external threads of the annular member 2, that is, the value is the specification size of the nut, namely, a fit clearance between the internal threads and a bolt 3, and the fit clearance between the frustum-shaped internal thread and the tapered external thread of the annular member 2 is also considered, so that when the annular member 2 is screwed into the bolt together with the nut for locking, the expected objective that the nut will not loosen by only locking a single structure is achieved thanks to a comprehensive structural effect of the formed and retained original nut structure, the eccentricity of the annular member 2 and the structure of multiple properties of the tapered thread; main guiding idea of the present invention is to solve the technical problem when a single standard specification nut is limited in application occasions but is subjected to anti-loosening reliability requirements; more obviously, structural features of the present invention can be apparently designed as non-standard ones by increasing the size according to actual needs, and the present invention can adopt a double nut structure used in a superposed mode to enhance the overall anti-loosening effect after the nut is locked; since the present invention features the frustum-shaped thread structure, the overall structural function effect is realized in the same nut, the eccentric value of the annular member 2 cannot cause substantial damage to the bolt 3 due to the comprehensive stress relation, moreover, under the condition that the present invention uses a double-nut structure for anti-loosening, a four-section locking structure capable of staggering the force positions is actually formed, and compared with a common double-nut anti-loosening structure, it has more prominent structural and functional advantages. In the present implementation, the tapered thread internally arranged in the concave cavity nut 1 may be changed, in the same way as needed, into that in a tapered concave cavity or a circular concave cavity that matches with the eccentricity of an external non-thread of the annular member 2, so as to realize the functions.

[0018] Embodiment 2: a ring type locknut with slight change in the structure as shown in FIG. 2, which is actually designed according to the specification and size of a standard nut, moreover, the structural features of the concave cavity nut 1 in the present invention are the same as those of Embodiment 2, but the annular member in Embodiment 1 is added to another nut, thereby forming a boss nut 2, both structural and functional effects of the double nuts in the specific embodiment are slightly different from those of Embodiment 1, but they have their respective advantages, the overall structure and effect are also worthy of recognition, which may be suitable for different needs, under the condition that the present embodiment aims to enhance actual effect, it is apparently designed as non-standard ones by increasing the size according to actual needs.

[0019] Apparently, those skilled in the art may make various modifications and variations to the structural arrangement of the present invention without departing from the spirit and scope of the present invention. Therefore, if these modifications fall within the technical scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications.