Novel twist-off type anti-loosening and anti-dismounting nut

Abstract

The utility model relates to the technical field of nuts, in particular to a novel twist-off type anti-loosening and anti-dismounting nut which comprises a nut body and a circular truncated cone, an outer ring is fixed on the outer side of the nut body, a nut sleeve is arranged on the outer side of the nut body, and an inner block is integrally fixed on the inner side wall of the bottom end of the nut sleeve. A protrusion is fixed to the top end of the inner block, a clamping groove matched with the protrusion in size is formed in the bottom end of the outer ring, a nut body and a circular truncated cone in the nut are of an integrated structure, and an inner hexagonal groove is inwards formed in the top end of the circular truncated cone. The hexagonal part is separated and falls off, and after the threads are fastened, the nut main body presses the inner spigot of the sheath under the action of fastening axial force, so that the cylindrical nut main body and the nut sleeve are left; and a stress point cannot be found by using a conventional wrenching tool, so that the anti-loosening and anti-dismounting effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, in particular to a novel twist-off type anti-loosening and anti-disassembly nut. Background Art

[0002] There are many types of existing twist-off anti-loosening and anti-disassembly nuts with different structures. The main purpose is to achieve the effect of preventing the nuts from loosening and disassembly.

[0003] However, most anti-loosening and anti-removal nuts have inherent defects and unpredictable risks brought by their own structures. For example, the twist-off anti-loosening and anti-removal nuts used in the market have a conical cone structure. When the hexagonal head completes the tightening function (it falls off by itself after reaching the torque required for construction), the nut body is left to achieve the anti-loosening and anti-removal effect. However, it can still be disassembled using a special pipe pliers, and the anti-removal effect is unsatisfactory. Utility Model Content

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides a new type of twist-off type anti-loosening and anti-disassembly nut. Through the nut sleeve structure with a back-off groove, after the nut structure and the outer ring are fixed, the hexagonal part can be separated and fallen off after a certain torque is reached. After the thread is tightened, due to the action of the tightening axial force, the nut body presses the stopper inside the sleeve, thereby leaving the cylindrical nut body and the nut sleeve; the force point can no longer be found by using a conventional wrench tool, thereby achieving the anti-loosening and anti-disassembly effect; it can effectively solve the problem that after the hexagonal head completes the tightening function (it falls off by itself after reaching the torque required for construction) in the prior art, the nut body is left, thereby achieving the anti-loosening and anti-disassembly effect. Through the set nut sleeve structure, when in use, it is directly sleeved on the outside of the nut body. Due to the additional sleeve on the outside, the anti-disassembly insurance coefficient is increased, which can not only ensure anti-loosening and anti-disassembly, but also achieve the guaranteed load of nuts of the same level; but it is still possible to disassemble using a special pipe clamp, and the anti-disassembly effect is not satisfactory.

[0006] Technical Solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The utility model provides a novel twist-off type anti-loosening and anti-disassembly nut, comprising a nut, wherein the nut comprises a nut body and a frustum, and an outer ring is fixed to the outer side of the nut body, a nut sleeve is arranged on the outer side of the nut body, an inner block is integrally fixed to the inner side wall of the bottom end of the nut sleeve, a protrusion is fixed to the top end of the inner block, and a slot matching the size of the protrusion is opened at the bottom end of the outer ring.

[0009] Furthermore, the nut body and the truncated cone in the nut are an integrated structure, and a hexagonal groove is provided inwardly at the top of the truncated cone.

[0010] Furthermore, the inner diameter of the nut sleeve is matched with the outer diameter of the outer ring.

[0011] Furthermore, the inner diameter of the inner block is matched with the outer diameter of the nut sleeve.

[0012] Furthermore, the protrusion is made of soft rubber material.

[0013] Furthermore, a circle of back-cutting grooves is provided at the top end of the nut sleeve.

[0014] Beneficial Effects

[0015] Compared with the known public technology, the technical solution provided by the utility model has the following beneficial effects:

[0016] The utility model provides a nut sleeve structure with a retreat groove, and after the nut structure and the outer ring are fixed, the hexagonal part can be separated and fallen off after a certain torque is reached. After the thread is tightened, due to the action of the tightening axial force, the nut body presses the stopper inside the sleeve, leaving the cylindrical nut body and the nut sleeve; the force point can no longer be found by using a conventional wrench, thereby achieving the effect of preventing loosening and disassembly.

[0017] In the utility model, a nut sleeve structure is provided, which is directly sleeved on the outside of the nut body when in use. Due to the additional protective sleeve on the outside, the anti-disassembly safety factor is increased, which can ensure anti-loosening and anti-disassembly; and can achieve the guaranteed load of nuts of the same level. The two have an embedded stable structure.

[0018] In the device, the protrusion structure and the slot structure are matched and fixed, and the two are connected by snapping, which can quickly realize the connection and fixation between the nut body and the outer ring structure. It is upgraded and improved on the basis of the existing twist-off type anti-loosening and anti-disassembly nut, optimizes the engineering mechanics structure, and improves the nut anti-disassembly safety coefficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2This is one of the structural split diagrams of the utility model;

[0022] Figure 3 This is the second structural split diagram of the utility model;

[0023] Figure 4 This is a cross-sectional view of the structure of the utility model;

[0024] Figure 5 It is a structural section split diagram of the utility model.

[0025] The numbers in the figure represent: 1, nut; 2, nut sleeve; 21, protrusion; 22, inner block; 3, outer ring; 31, slot. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0027] The utility model is further described below in conjunction with embodiments.

[0028] Embodiment: A new type of twist-off anti-loosening and anti-removal nut, refer to the attached Figure 1 -Attached Figure 5 , including a nut 1, the nut 1 including a nut body and a frustum, and an outer ring 3 is fixed on the outside of the nut body, a nut sleeve 2 is arranged on the outside of the nut body, an inner block 22 is fixed integrally on the inner side wall of the bottom end of the nut sleeve 2, a protrusion 21 is fixed on the top of the inner block 22, and a slot 31 matching the size of the protrusion 21 is provided at the bottom end of the outer ring 3; after the nut is cold-forged, it is CNC-machined to a specified size and the internal thread is tapped; after the sleeve is cold-forged, it is CNC-machined to a specified size and a nut sleeve 2 structure with a back-off groove is provided, after the nut 1 structure is fixed to the outer ring 3, the hexagonal part can be separated and fallen off after a certain torque is reached, and after the thread is tightened, due to the action of the tightening axial force, the nut body presses the inner stop of the sleeve, thereby leaving the cylindrical nut body and the nut sleeve 2; the force point can no longer be found using conventional wrenches, thereby achieving the effect of preventing loosening and unloading.

[0029] The nut body and the cone in the nut 1 are an integrated structure, and a hexagonal groove is provided inwardly at the top of the cone; the inner diameter of the nut sleeve 2 is matched with the outer diameter of the outer ring 3; the inner diameter of the inner block 22 is matched with the outer diameter of the nut sleeve 2; the protrusion 21 is made of soft rubber; a circle of back-cutting groove is provided at the top of the nut sleeve 2; the nut sleeve 2 structure is set up, and when in use, it is directly sleeved on the outside of the nut body. Due to the additional sheath on the outside, the anti-unloading safety coefficient is increased, which can not only ensure anti-loosening and anti-unloading; but also achieve the guaranteed load of the nut 1 of the same level. The protrusion 21 structure and the slot 31 structure are matched and fixed, and the two are connected by clamping, which can quickly realize the connection and fixation between the nut body and the outer ring 3 structure.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A new type of twist-off anti-loosening and anti-disassembly nut, characterized in that: The invention comprises a nut (1), wherein the nut (1) comprises a nut body and a truncated cone, an outer ring (3) is fixed to the outer side of the nut body, a nut sleeve (2) is arranged on the outer side of the nut body, an inner block (22) is integrally fixed to the inner side wall of the bottom end of the nut sleeve (2), a protrusion (21) is fixed to the top end of the inner block (22), and a slot (31) having a size matching that of the protrusion (21) is provided at the bottom end of the outer ring (3).

2. A new twist-off anti-loosening and anti-disassembly nut according to claim 1, characterized in that: The nut body and the truncated cone in the nut (1) are an integrated structure, and a hexagonal groove is provided inwardly at the top of the truncated cone.

3. A new twist-off anti-loosening and anti-disassembly nut according to claim 1, characterized in that: The inner diameter of the nut sleeve (2) is matched to the outer diameter of the outer ring (3).

4. A new twist-off anti-loosening and anti-disassembly nut according to claim 1, characterized in that: The inner diameter of the inner block (22) is matched to the outer diameter of the nut sleeve (2).

5. A new twist-off anti-loosening and anti-disassembly nut according to claim 4, characterized in that: The protrusion (21) is made of soft rubber material.

6. A new twist-off anti-loosening and anti-disassembly nut according to claim 1, characterized in that: The top end of the nut sleeve (2) is provided with a circle of back-cutting grooves.

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