CN-224229055-U - Combined locknut

CN224229055UCN 224229055 UCN224229055 UCN 224229055UCN-224229055-U

Abstract

The utility model discloses a combined locknut, which comprises an inner threaded part and an outer limiting part, wherein a thread structure is arranged in a hollow cavity of the inner threaded part, a limiting groove with a closed-loop structure is concavely arranged on the inner side wall of the outer limiting part, a first end of the inner threaded part is limited in the outer limiting part in a circumferential rotation mode along the limiting groove, the first end of the inner threaded part is clamped between two opposite inner side surfaces of the limiting groove, the first end surface of the inner threaded part is in close fit with one inner side surface of the limiting groove, the inner side surfaces of the two opposite inner side surfaces of the limiting groove, which are in close fit with the first end surface of the inner threaded part, and the first end surface of the inner threaded part are both limiting surfaces, limiting bosses are convexly arranged on one of the two limiting surfaces, limiting grooves for enabling the limiting bosses to be embedded in the inner side and limiting the inner threaded part to move in the radial direction are concavely arranged on the other limiting surface, and compared with the prior art, the nut body is not easy to loosen, so that the service life of a tire screw is longer.

Inventors

LI MOUJIE

Assignees

晋江市茂杰机械配件有限公司

Dates

Publication Date: 20260512
Application Date: 20250702

Claims (4)

1. The combined locknut is characterized in that the nut body comprises an inner threaded part and an outer limiting part, the inner threaded part and the outer limiting part are hollow structures with two open ends, the threaded structures are located in a hollow cavity of the inner threaded part, a limiting groove with a closed-loop structure is concavely formed in the inner side wall of the outer limiting part, the first end of the inner threaded part is limited in the outer limiting part in a mode of being capable of rotating circumferentially along the limiting groove, the first end face of the inner threaded part is clamped between two opposite inner side faces of the limiting groove, the first end face of the inner threaded part is in fit with one inner side face of the limiting groove, the inner side faces of the two opposite inner side faces of the limiting groove, which are in fit with the first end face of the inner threaded part, and the first end faces of the inner threaded part are all limiting faces, limiting bosses with the hollow structures are convexly arranged on the inner side faces, the first end faces of the inner threaded part are concavely provided with limiting bosses for being embedded in the inner threaded part, and extend in the same direction as the inner threaded part, or gradually-decreasing direction of the limiting boss and the limiting boss extend along the same radial direction as the limiting axis of the limiting groove, or the limiting boss is limited in the radial direction of the limiting boss and the limiting boss.
2. The combined locknut of claim 1, wherein the outer limiting piece is provided with a first sheet body, an outer sleeve body and a second sheet body, the first sheet body and the second sheet body are of closed-loop hollow structures, the outer sleeve body is of hollow cylindrical structures with two open ends, the first sheet body and the second sheet body are respectively arranged on two end parts of the inner side wall of the outer sleeve body at intervals, the axes of the first sheet body, the outer sleeve body and the second sheet body are arranged on the same straight line, the limiting groove for the first end of the inner threaded piece to be located in is formed between the first sheet body, the outer sleeve body and the second sheet body in a surrounding mode, a limiting rotating block with the outer diameter larger than the outer diameter of the inner threaded piece is arranged on the outer side wall of the first end of the inner threaded piece in a protruding mode, the limiting rotating block is of a closed-loop structure, and two opposite surfaces of the limiting rotating block are respectively matched with one surface of the first sheet body and the second sheet body in a pasting mode.
3. The combined locknut of claim 2, wherein one end of the inner threaded piece is left, the inner threaded piece is of a hollow strip-shaped structure extending along the left-right direction, the right end cross section of the inner threaded piece is of a polygonal structure, the limiting rotating block is positioned on the left end outer side wall of the inner threaded piece, the outer diameter of the limiting rotating block is larger than that of the inner threaded piece, a circular boss which is gradually reduced from right to left is convexly arranged on the left side surface of the inner threaded piece, a circular groove which is gradually reduced from right to left and is used for the circular boss to be embedded in is concavely arranged on the right side surface of the first sheet body at the position of the opening of the first sheet body, the circular boss is the limiting boss, the circular groove is the limiting groove, and the outer side wall of the circular boss and the inner side wall of the circular groove form the limiting surface.
4. The combination locknut of claim 2, wherein one end of the inner threaded piece is left, the right side surface of the first sheet body is provided with a round table protruding rightward, penetrating in the left-right direction and gradually reducing from left to right, the left side surface of the inner threaded piece is provided with a round groove concavely in the left side surface for gradually reducing from left to right and embedding the round table in the round table, the round table is the limiting boss, the round groove is the limiting groove, and the outer side wall of the round table and the inner side wall of the round groove form the limiting surface.

Description

Combined locknut Technical Field The utility model relates to the technical field of anti-loosening of tire nuts, in particular to a combined anti-loosening nut. Background The tire is generally installed on both ends of the axle through the cooperation of screw rod and nut, has the tire screw rod that transversely stretches out the car outside on the both ends of axle, and the wheel hub of tire is installed at the tire screw rod with supporting spiral shell of packing ring through nut with the tire screw rod is installed, and the packing ring is used for protecting the base member surface of junction, and the installation order is first install the packing ring on the tire screw rod, and then screw on the nut on the tire screw rod, and the nut presses on the packing ring. However, in order to facilitate disassembly and assembly, the inner diameter of the nut is slightly larger than the outer diameter of the screw rod, and due to the fact that the diameter is poor, the nut is easy to move in the radial direction due to jolt vibration of an automobile, so that the axial center of the nut cannot be on the same straight line with the axial center of the screw rod, the hub center line of the hub after assembly and the center line of the wheel are easy to be not on the same axis, and therefore, the automobile is easy to generate great shearing force on the tire screw rod during operation, the screw rod is easy to break, and the service life of the tire screw rod is shortened. In view of the above, the present inventors have conducted intensive studies on the problems, and have produced the present invention. Disclosure of utility model The utility model aims to provide a combined locknut so as to solve the problem that the service life of a tire screw is short because the existing nut is easy to loosen in the radial direction. In order to achieve the purpose, the utility model adopts the following technical scheme: A combined locknut comprises a nut body, wherein the nut body is of a hollow structure with two open ends, and a thread structure matched with external threads of a tire screw is arranged on the inner side wall of the nut body; the nut body comprises an inner threaded part and an outer limiting part, wherein the inner threaded part and the outer limiting part are hollow structures with two open ends, the threaded structures are located in a hollow cavity of the inner threaded part, a limiting boss which is of a closed-loop structure is concavely arranged on the inner side wall of the outer limiting part, the first end of the inner threaded part is limited in the outer limiting part in a mode capable of circumferentially rotating along the limiting groove, the first end of the inner threaded part is clamped between two opposite inner side surfaces of the limiting groove, the first end face of the inner threaded part is in fit with one inner side surface of the limiting groove in a pasting mode, the inner side surfaces of the two opposite inner side surfaces of the limiting groove, which are in fit with the first end face of the inner threaded part, and the first end face of the inner threaded part are both limiting surfaces, limiting bosses which are of a hollow circular truncated cone structure are convexly arranged on the two limiting surfaces, limiting bosses which are used for embedding the limiting bosses in the inner limiting grooves and limiting the inner threaded part to move in the radial direction are concavely arranged on the other limiting faces, the limiting bosses and the limiting grooves are gradually increased along the extending directions of the axes of the nut body or gradually decrease along the axes of the limiting bosses and the limiting bosses or gradually decrease along the same straight axes as the limiting bosses. The outer limiting piece is provided with a first sheet body, an outer sleeve body and a second sheet body, the first sheet body and the second sheet body are of closed-loop hollow structures, the outer sleeve body is of hollow cylindrical structures with two open ends, the first sheet body and the second sheet body are respectively located at two end parts of the inner side wall of the outer sleeve body, the first sheet body and the second sheet body are arranged at intervals relatively, the axes of the first sheet body, the outer sleeve body and the second sheet body are on the same straight line, the first sheet body, the outer sleeve body and the second sheet body enclose the limiting groove for the first end of the inner screwing piece to be located in, the outer side wall of the first end of the inner screwing piece is convexly provided with a limiting rotating block with the outer diameter larger than the outer diameter of the inner screwing piece, the limiting rotating block is of a closed-loop structure, the limiting rotating block is located in the limiting groove, and two opposite sides of the limiting rotating block are respectively in close fit with one