Retaining stable nut

Abstract

The retaining stable nut comprises a first nut, a second nut and a middle base plate, the first nut comprises a nut body, round grooves are formed in the upper end face and the lower end face of the nut body, a threaded hole is formed between the two grooves, the diameter of the threaded hole is smaller than the inner diameter of the grooves, a fixing groove is further formed between the two grooves, and the fixing groove is communicated with the threaded hole. A limiting plate is arranged on the side wall of the groove, the limiting plate obliquely extends into the fixing groove, a notch allowing the bolt to penetrate through is formed in the middle of the middle base plate, an abutting plate extending into the fixing groove is further arranged at one end of the middle base plate, the abutting plate abuts against the limiting plate, the limiting plate abuts against the connected bolt, and the second nut abuts against the middle base plate. According to the utility model, the limiting plate and the positioning plate are arranged on the nut, and the limiting plate and the positioning plate are limited through the propping plate and the ring plate, so that the limiting plate and the positioning plate are tightly propped against the connected bolt, the connection stability between the nut and the bolt is improved, and the retaining of the nut after being connected with the bolt is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of nut fasteners, in particular to a non-retractable and stable nut. Background Art

[0002] Nuts are one of the common fasteners and are generally used in conjunction with bolts. However, the connection stability of conventional nuts and bolts is generally guaranteed by their threaded connection, which may loosen under working conditions such as vibration, affecting the connection stability. The existing Chinese utility model patent with application number 202320896550.0 discloses a nut that prevents back-off, which achieves a further stable connection with the bolt by setting an arc plate in conjunction with an aluminum alloy open ring. However, the contact between the arc plate and the bolt is still achieved through small bolts, and the overall stability effect is low. At the same time, the design and production of the arc plate and the open ring structure are also cumbersome and inefficient. Utility Model Content

[0003] The utility model aims to provide a nut structure with simple structure and good anti-loosening and anti-retraction effects in view of the deficiencies in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a locking and stable nut, which adopts the following technical solutions:

[0005] A retreat-stopping and stable nut comprises a first nut, a second nut and an intermediate pad. The first nut comprises a nut body. The upper and lower end surfaces of the nut body are provided with circular grooves. A threaded hole is provided between the two grooves. The diameter of the threaded hole is smaller than the inner diameter of the groove. A fixing groove is also provided between the two grooves. The fixing groove is connected to the threaded hole. A limiting plate is provided on the side wall of the groove. The limiting plate is arranged obliquely and extends into the fixing groove. A notch is provided in the middle of the intermediate pad for the bolt to pass through. A resist plate extending into the fixing groove is also provided at one end of the intermediate pad. The resist plate is pressed against the limiting plate. The limiting plate is pressed against the connected bolt. The second nut is pressed against the intermediate pad.

[0006] A further improvement of the anti-retreat stable nut of the utility model is that four groups of fixing grooves, limiting plates and abutting plates are arranged evenly.

[0007] A further improvement of the utility model is that the second nut comprises a second nut body, the upper and lower end surfaces of the second nut body are provided with circular second grooves, a second threaded hole is provided between the two second grooves, and a plurality of inclined positioning plates are evenly arranged circumferentially on the second groove close to the first nut, a cylindrical ring plate is provided on the middle pad, and the inner side of the ring plate is against the positioning plate.

[0008] A further improvement of the anti-retraction stable nut of the utility model is that a second fixing groove is provided between the two second grooves, and the second fixing groove faces the inclined positioning plate.

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

[0010] The utility model arranges a limit plate and a positioning plate on the nut, and limits the limit plate and the ring plate so that the limit plate and the positioning plate are tightly pressed against the connected bolts, thereby improving the connection stability between the nut and the bolt, thereby ensuring that the nut stops retreating after being connected to the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0012] Figure 2 This is a schematic diagram of the structure of the first nut of the utility model;

[0013] In the figure: 1 nut body, 2 second nut body, 3 middle pad, 4 groove, 5 threaded hole, 6 fixing groove, 7 limit plate, 8 abut plate, 9 second groove, 10 second threaded hole, 11 positioning plate, 12 ring plate. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] like Figure 1 and Figure 2 As shown, a kind of stop-retracting stable nut includes a first nut, a second nut and an intermediate pad 3. The first nut includes a nut body 1. The upper and lower end surfaces of the nut body are provided with circular grooves 4. A threaded hole 5 is provided between the two grooves. The diameter of the threaded hole is smaller than the inner diameter of the groove. A fixing groove 6 is also provided between the two grooves. The fixing groove is connected to the threaded hole. A limit plate 7 is provided on the side wall of the groove. The limit plate is arranged obliquely and extends into the fixing groove. A notch is provided in the middle of the intermediate pad for the bolt to pass through. A stop plate 8 is also provided at one end of the intermediate pad to extend into the fixing groove. The stop plate is pressed against the stop plate. The stop plate has a certain plasticity. After the stop plate presses against the stop plate, the stop plate presses against the connected bolt. The second nut presses against the intermediate pad.

[0016] There are four groups of fixed slots, limit plates and abutment plates, which are evenly arranged to further ensure the limit stability.

[0017] Furthermore, the second nut includes a second nut body 2, the upper and lower end surfaces of the second nut body are provided with circular second grooves 9, a second threaded hole 10 is provided between the two second grooves, a plurality of inclined positioning plates 11 are evenly distributed circumferentially on the second groove close to the first nut, and a cylindrical ring plate 12 is provided on the middle pad, and the inner side of the ring plate is against the positioning plate.

[0018] A second fixing groove (not shown) is also provided between the two second grooves, and the second fixing groove faces the inclined positioning plate. The second fixing groove structure can be the same as the fixing groove structure, that is, the second nut body has the same structure as the nut body, and the difference lies in the different layout of the limit plate and the positioning plate.

[0019] The working principle of the utility model is as follows: the first nut body is screwed onto the bolt, and after it is in place, an intermediate pad is inserted so that the abutment plate clamps the limit plate and then clamps the bolt to achieve a stable connection. Then the second nut is screwed on, and after the second nut is rotated into place, it directly abuts against the intermediate pad, and at the same time the ring plate also abuts against the positioning plate, and the positioning plate abuts against the bolt. The two sets of nuts are stably connected to the bolt as a whole, ensuring stable anti-loosening and anti-retreat.

[0020] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A locking and stable nut, characterized in that: It includes a first nut, a second nut and an intermediate pad. The first nut includes a nut body. The upper and lower end surfaces of the nut body are provided with circular grooves. A threaded hole is provided between the two grooves. The diameter of the threaded hole is smaller than the inner diameter of the groove. A fixing groove is also provided between the two grooves. The fixing groove is connected to the threaded hole. A limiting plate is provided on the side wall of the groove. The limiting plate is arranged obliquely and extends into the fixing groove. A notch is provided in the middle of the intermediate pad for the bolt to pass through. A resist plate extending into the fixing groove is also provided at one end of the intermediate pad. The resist plate is pressed against the limiting plate. The limiting plate is pressed against the connected bolt. The second nut is pressed against the intermediate pad.

2. A locking and stable nut according to claim 1, characterized in that: The fixing grooves, the limiting plates and the abutting plates are arranged in four groups and are evenly distributed.

3. A locking and stable nut according to claim 2, characterized in that: The second nut includes a second nut body, the upper and lower end surfaces of the second nut body are provided with circular second grooves, a second threaded hole is provided between the two second grooves, a plurality of inclined positioning plates are evenly distributed circumferentially on the second groove close to the first nut, a cylindrical ring plate is provided on the middle pad, and the inner side of the ring plate is against the positioning plate.

4. A locking and stable nut according to claim 3, characterized in that: A second fixing groove is also arranged between the two second grooves, and the second fixing groove faces the inclined positioning plate.

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