Stable connecting nut for automobile

Abstract

The utility model discloses a stable connecting nut for an automobile, which comprises a lower nut and an upper nut, the center of the upper nut and the center of the lower nut are provided with vertically through thread grooves with the same size, the lower portion of the outer side of the upper nut is provided with a protruding portion, the outer edge of the upper end of the lower nut is provided with a turnup portion, and the protruding portion is arranged in the turnup portion. An annular first fixing groove is upwards formed in the lower end face of the upper nut, an annular second fixing groove is downwards formed in the upper end face of the lower nut, the first fixing groove and the second fixing groove are eccentrically distributed relative to the threaded groove, a limiting plate is arranged in the second fixing groove, a horizontal through groove is formed in the side, facing the threaded groove, of the periphery of the lower nut, and the second fixing groove communicates with the through groove. The limiting plate is additionally arranged to further limit the upper nut and the lower nut, so that the upper nut and the lower nut form a whole in the connecting process, the stability of the formed whole connection is higher, and the stability of nut connection is further guaranteed when the screwing area of the upper nut and the lower nut is increased.

Description

Technical Field

[0001] This utility model relates to the field of nut technology, specifically to a stable connecting nut for automobiles. Background Technology

[0002] Nuts are common fasteners in automobile manufacturing and installation. Due to vibrations during vehicle operation, nuts require high connection stability. A Chinese utility model patent with application number 202020290911.3 discloses a locking nut that improves locking capacity by tightening the upper and lower nuts together. However, in this structure, the upper and lower nuts are still in a state of relative rotation. Under vibration, the lower nut may still loosen, reducing the tightness between the two nuts and lowering the overall connection stability. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing a connecting nut for automobiles that offers high connection stability under vibration conditions.

[0004] To achieve the above objectives, this utility model provides a stabilizing connecting nut for automobiles, which adopts the following technical solution:

[0005] A stabilizing connecting nut for automobiles includes a lower nut and an upper nut. The lower nut has a larger cross-sectional area than the upper nut. The upper and lower nuts have threaded grooves of the same diameter running vertically through their centers. The lower outer side of the upper nut has a protrusion, and the upper outer edge of the lower nut has a flange. The protrusion is placed inside the flange. The lower end of the upper nut has an annular first fixing groove facing upwards, and the upper end of the lower nut has an annular second fixing groove facing downwards. The first fixing groove and the second fixing groove correspond to each other and are eccentrically arranged relative to the threaded groove. A limiting plate is provided in the second fixing groove. The outer periphery of the lower nut has a horizontal through groove facing the threaded groove. The second fixing groove connects to the through groove. The lower end of the limiting plate has a limiting part that extends into the through groove. A positioning element is provided in the through groove, which abuts against the limiting part. The upper end of the limiting plate extends into the first fixing groove.

[0006] A further improvement of this utility model for a sturdy connecting nut for automobiles is that it has at least four sets of through grooves, which are evenly distributed in the circumference.

[0007] A further improvement of this utility model for a stable connecting nut for automobiles is that the end of the positioning member near the threaded groove is provided with anti-slip texture, and the positioning member protrudes from the through groove.

[0008] A further improvement of this utility model for a stable connecting nut for automobiles is that a thread is provided on the groove wall at the end of the through groove away from the threaded groove, and a matching second thread is provided at the end of the positioning member away from the threaded groove.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This utility model further limits the upper and lower nuts by adding a limiting plate, so that the upper and lower nuts form a whole during the connection process, and the overall connection stability is higher. This further ensures the stability of the nut connection when the screw area of ​​the upper and lower nuts is increased. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] In the diagram: 1 Upper nut, 2 Lower nut, 3 Protrusion, 4 Flanged part, 5 First fixing groove, 6 Limiting plate, 7 Through groove, 8 Limiting part, 9 Threaded groove. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] like Figure 1 As shown, a stabilizing connecting nut for automobiles includes a lower nut 2 and an upper nut 1. The lower nut has a larger cross-sectional area than the upper nut. Both the upper and lower nuts have through-threaded grooves 9 of the same diameter at their centers. The lower outer side of the upper nut has a protrusion 3, and the upper outer edge of the lower nut has a flange 4, with the protrusion placed inside the flange. The lower end of the upper nut has an annular first fixing groove 5 facing upwards, and the upper end of the lower nut has an annular second fixing groove facing downwards. The first and second fixing grooves correspond to each other and are eccentrically arranged relative to the threaded grooves. A limiting plate 6 is provided in the second fixing groove. A horizontal through-groove 7 is provided on the outer periphery of the lower nut towards the threaded groove, and the second fixing groove connects to the through-groove. The lower end of the limiting plate has a limiting part 8 extending into the through-groove. A positioning element (not shown in the figure) is provided in the through-groove, abutting against the limiting part. The upper end of the limiting plate extends into the first fixing groove. The other end faces of the upper and lower nuts can be marked to determine the positions of the first and second fixing grooves.

[0015] Preferably, the through groove has at least four sets of evenly spaced circumferential portions. Further, the end of the positioning member near the threaded groove has anti-slip texture, and the positioning member protrudes from the through groove. The end of the through groove away from the threaded groove has threads, and the end of the positioning member away from the threaded groove has a matching second thread.

[0016] The working principle of this utility model is as follows: the limiting plate is placed in the second fixing groove, at which time the limiting part is inserted into the through groove, and the limiting plate is lower than or flush with the upper end surface of the second fixing groove. Then the upper nut is installed, and then the lower nut is set with a flange. During connection, both the upper and lower nuts are connected to the connecting piece, which can be a bolt. The upper nut is finely adjusted so that the first and second fixing grooves are opposite each other. The positioning piece is installed so that the limiting plate is pushed out and inserted into the first fixing groove. At the same time, the positioning piece also abuts against the bolt, so that the connection of the nuts is stable.

[0017] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A stable connecting nut for a vehicle, comprising a lower nut and an upper nut, the lower nut having a larger cross-sectional area than the upper nut, the upper and lower nuts having the same size and diameter of thread grooves passing through the upper and lower nuts, the upper nut having a protruding portion at the lower part of the outer side of the upper nut, the lower nut having a flange portion at the upper end of the outer side of the lower nut, and the protruding portion being disposed in the flange portion, characterized in that: The upper end of the upper nut is provided with an annular first fixing groove facing upward, the upper end of the lower nut is provided with an annular second fixing groove facing downward, the first fixing groove corresponds to the second fixing groove, the first fixing groove and the second fixing groove are arranged eccentrically relative to the thread groove, a limiting plate is arranged in the second fixing groove, a horizontal through groove is arranged on one side of the outer periphery of the lower nut relative to the thread groove, the second fixing groove is communicated with the through groove, a limiting portion of the limiting plate is arranged to extend into the through groove, a positioning member is arranged in the through groove, the positioning member abuts against the limiting portion, and the upper end of the limiting plate extends into the first fixing groove. ​ 2. A secure connection nut for an automobile according to claim 1, wherein: The through groove is provided with at least four groups of circumferential uniform portions.

3. The secure connection nut for an automobile according to claim 2, wherein: The positioning member is provided with an anti-skid pattern at one end close to the thread groove, and the positioning member protrudes from the through groove.

4. The secure connection nut for an automobile according to claim 3, wherein: The through groove is provided with a thread on the groove wall at one end away from the thread groove, and the positioning member is provided with a second thread matched with the thread.

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