Anti-disassembly nut structure

Abstract

The utility model provides an anti-disassembly nut structure which comprises a nut body and further comprises a containing sleeve, a containing cavity is formed in the containing sleeve, a through hole corresponding to the center of the nut body is formed in the bottom of the containing cavity, and a protruding limiting column is arranged at the bottom of the containing sleeve. The nut needs to be detached through a special tool, the special tool structurally comprises a cylindrical head, the diameter of the cylindrical head is equal to that of the containing cavity, a hexagonal groove is formed in the end face of the head and matched with the nut, and a concave hole corresponding to the limiting column is formed in the end face of the head. Meanwhile, the limiting columns need to be correspondingly inserted into the concave holes, and at the moment, the tool can be rotated to rotate the nut for disassembly. By means of the structural arrangement, a common tool cannot be inserted into the containing cavity, and the nut cannot be detached.

Description

Technical Field

[0001] The utility model relates to the technical field of metal fasteners, and specifically to an anti-dismantling nut structure. Background Art

[0002] Bolts and nuts are common fastener structures in the prior art.

[0003] After the bolt and nut are fastened together, in order to prevent the bolt and nut from being easily disassembled and opened, the prior art has a technology for changing the shape of the bolt so that the bolt can only be disassembled and opened using a special tool.

[0004] refer to Figure 1 As shown, an existing bolt structure has a triangular groove or protrusion at its end, which needs to be operated with a wrench with a triangular end. In this way, an ordinary wrench cannot be used, which increases the difficulty of disassembly.

[0005] The idea behind the above anti-disassembly is that ordinary flat-end and cross-end wrenches cannot be used with the tool, which increases the difficulty of disassembly.

[0006] Under the above design ideas, how to make the nut have an anti-dismantling function is a question that needs to be considered. Utility Model Content

[0007] In view of the problems pointed out in the background technology, the utility model proposes an anti-disassembly nut structure to solve the above technical problems.

[0008] The technical solution of the utility model is achieved in this way:

[0009] A disassembly-proof nut structure comprises a nut body and a receiving sleeve, wherein the receiving sleeve is provided with a receiving cavity, the bottom of the receiving cavity is provided with a through hole corresponding to the center of the nut body, and the bottom of the receiving sleeve is provided with a protruding limiting column.

[0010] The utility model is further configured that the accommodating sleeve is a cylindrical structure, the accommodating sleeve is coaxially arranged with the nut body, and the outer side wall of the nut body and the side wall of the accommodating sleeve are spaced apart.

[0011] The utility model is further configured that the limiting column is arranged parallel to the central axis of the nut body.

[0012] The utility model is further configured that the length of the limiting column is greater than or equal to the axial length of the nut body.

[0013] The utility model is further configured that the depth of the accommodating cavity is greater than or equal to the axial length of the nut body.

[0014] The utility model is further configured such that the diameter of the through hole is equal to the diameter of the threaded hole of the nut body.

[0015] The utility model is further configured that a disconnection seam is provided at the bottom of the accommodating cavity, the disconnection seam is arranged along the radial direction of the through hole, and one end of the disconnection seam is connected to the through hole.

[0016] The utility model is further configured such that the rear width of the bottom wall of the accommodating cavity gradually becomes thicker from the edge of the through hole to the edge of the accommodating sleeve.

[0017] The utility model is further configured that a plurality of the limiting columns are provided, and the plurality of limiting columns are arranged at intervals in the circumferential direction of the accommodating sleeve.

[0018] The utility model is further configured that the accommodating cavity is a cylindrical structure.

[0019] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0020] (1) The nut needs a special tool to be removed. The special tool has the following structure: a cylindrical head, the diameter of which is equal to the diameter of the accommodating cavity, the end face of the head is provided with a hexagonal groove, the hexagonal groove is adapted to the nut, and the end face of the head is provided with a concave hole corresponding to the limiting column. When using, the tool is inserted between the nut and the side wall of the accommodating cavity. At the same time, the limiting column needs to be inserted into the concave hole accordingly. At this time, the tool can be turned to rotate the nut for removal. The above structural setting makes it impossible for ordinary tools to be inserted into the accommodating cavity and the nut cannot be removed.

[0021] (2) When tightening the nut, the bottom of the accommodating cavity acts as a gasket and has a certain anti-loosening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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 description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 This is a schematic diagram of the structure of the existing bolt.

[0024] Figure 2 It is a structural schematic diagram of the utility model.

[0025] Figure 3 It is an exploded schematic diagram of the utility model.

[0026] Figure 4The utility model is a schematic diagram of the tool structure for operating the nut.

[0027] Description of the reference numerals in the accompanying drawings: nut body 1, accommodating sleeve 2, accommodating cavity 3, through hole 4, limiting column 5, disconnecting seam 6, tool 100. DETAILED DESCRIPTION

[0028] 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 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.

[0029] For reference Figure 1-4 The utility model is described as follows:

[0030] Embodiment 1: A disassembly-proof nut structure comprises a nut body 1 , wherein the nut body 1 is a hexagonal nut, and a threaded hole is provided at the center of the nut body 1 .

[0031] It also includes a housing sleeve 2, which is a cylindrical structure. The housing sleeve 2 is provided with a housing chamber 3, which is a cylindrical structure. The diameter of the housing chamber 3 is larger than the outer diameter of the nut body 1. The bottom of the housing chamber 3 is provided with a through hole 4 corresponding to the thread at the center of the nut body 1, and the diameter of the through hole 4 is equal to the diameter of the threaded hole of the nut body 1. The nut body 1 is arranged in the housing chamber 3, and the housing sleeve 2 is coaxially arranged with the nut body 1, and the outer side wall of the nut body 1 is spaced from the side wall of the housing sleeve 2. The axial depth of the housing chamber 3 is greater than or equal to the axial length of the nut body 1.

[0032] A protruding limiting column 5 is provided at the bottom of the accommodating sleeve 2. The limiting column 5 is arranged parallel to the central axis of the nut body 1. The length of the limiting column 5 is greater than or equal to the axial length of the nut body 1. One limiting column 5 can be provided, or multiple limiting columns 5 can be provided. Multiple limiting columns 5 are arranged at circumferential intervals on the accommodating sleeve 2.

[0033] A disconnection slit 6 is provided at the bottom of the accommodating chamber 3, and the disconnection slit 6 is arranged along the radial direction of the through hole 4, one end of the disconnection slit 6 is connected to the through hole 4, four disconnection slits 6 are provided, and the four disconnection slits 6 are arranged at intervals in the circumferential direction of the through hole 4, and the rear of the bottom wall of the accommodating chamber 3 is gradually thickened from the edge of the through hole 4 to the edge of the accommodating sleeve 2. By adopting the above technical solution, after the nut body 1 is tightened, the nut body 1 abuts against the surface of the fixed part through the bottom of the accommodating chamber 3, and the bottom of the accommodating chamber 3 acts as a gasket.

[0034] The tool 100 is used to operate the nut body 1 .

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A disassembly-proof nut structure, comprising a nut body (1), characterized in that: It also includes a containing sleeve (2), wherein the containing sleeve (2) is provided with a containing cavity (3), the bottom of the containing cavity (3) is provided with a through hole (4) corresponding to the center of the nut body (1), and the bottom of the containing sleeve (2) is provided with a protruding limiting column (5).

2. The anti-disassembly nut structure according to claim 1, characterized in that: The containing sleeve (2) is a cylindrical structure. The containing sleeve (2) and the nut body (1) are coaxially arranged, and the outer side wall of the nut body (1) and the side wall of the containing sleeve (2) are spaced apart.

3. The anti-disassembly nut structure according to claim 1, characterized in that: The limiting column (5) is arranged parallel to the central axis of the nut body (1).

4. The anti-disassembly nut structure according to claim 1, characterized in that: The length of the limiting column (5) is greater than or equal to the axial length of the nut body (1).

5. The anti-disassembly nut structure according to claim 1, characterized in that: The depth of the accommodating cavity (3) is greater than or equal to the axial length of the nut body (1).

6. The anti-disassembly nut structure according to claim 1, characterized in that: The diameter of the through hole (4) is equal to the diameter of the threaded hole of the nut body (1).

7. The anti-disassembly nut structure according to claim 1, characterized in that: A disconnection seam is provided at the bottom of the accommodating cavity (3), the disconnection seam is arranged along the radial direction of the through hole (4), and one end of the disconnection seam is connected to the through hole (4).

8. The anti-disassembly nut structure according to claim 1, characterized in that: The rear width of the bottom wall of the accommodating cavity (3) is gradually thickened from the edge of the through hole (4) to the edge of the accommodating sleeve (2).

9. The anti-disassembly nut structure according to claim 1, characterized in that: A plurality of the limiting columns (5) are provided, and the plurality of limiting columns (5) are arranged at intervals in the circumferential direction of the containing sleeve (2).

10. The anti-disassembly nut structure according to claim 1, characterized in that: The accommodating cavity (3) is a cylindrical structure.

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