Combined spline anti-theft nut

Abstract

The utility model discloses a combined spline anti-theft nut which comprises a nut body, an anti-theft structure is arranged in an inner cavity of the nut body, an anti-loosening mechanism is fixedly connected to the back face of the nut body, a protective sleeve is arranged in the inner cavity of the nut body, and the nut body comprises a base layer, a reinforcing layer and a functional layer. The functional layer comprises an insulating layer, a water-resisting layer, an anti-corrosion layer and an anti-corrosion wear-resisting layer, the reinforcing layer comprises a first strength layer and a second strength layer, the reinforcing layer is fixedly connected to the outer surface of the base layer, and the functional layer is coated on the outer surface of the reinforcing layer. The anti-theft nut has the advantages that the nut body is matched with the bolt to install and fix an object, the anti-theft structure can prevent the nut body from being reversely rotated so as to achieve the anti-theft purpose, the anti-theft structure can be limited through the protective sleeve, the protective sleeve can be taken out in the using process, and the anti-theft nut is convenient to use. And through the anti-loosening mechanism, the fixing tightness can be further improved, and the nut body is prevented from loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, in particular to a combined spline anti-theft nut. Background Art

[0002] A nut is a nut that is screwed together with a bolt or screw for fastening. It is a necessary component for all manufacturing machinery. There are many types of nuts, the most common ones are national standard, British standard, American standard, and Japanese standard nuts. Nuts are divided into several types according to their materials, including carbon steel, high strength, stainless steel, plastic steel, etc.

[0003] However, the nuts in the past have some defects in use, such as the lack of anti-theft structure, which can easily lead to the theft of the fixed items and cause losses, and the lack of high strength, corrosion resistance and wear resistance, which can easily lead to damage of the nuts in use, and cannot meet the needs of today's market. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems and / or the problems existing in the existing combined spline anti-theft nuts, the present utility model is proposed.

[0006] Therefore, the problem to be solved by the utility model is that the previous nuts have some defects in use, such as the lack of anti-theft structure, which easily leads to the theft of the fixed items and causes losses, and the lack of the advantages of high strength, corrosion resistance and wear resistance, which easily leads to the damage of the nuts in use and cannot meet the needs of today's market.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a combined spline anti-theft nut, comprising a nut body, the inner cavity of the nut body is provided with an anti-theft structure, the back of the nut body is fixedly connected with an anti-loosening mechanism, the inner cavity of the nut body is provided with a protective sleeve, the nut body comprises a base layer, a reinforcement layer and a functional layer, the functional layer comprises an insulating layer, a water-proof layer, an anti-corrosion layer and an anti-corrosion and wear-resistant layer, the reinforcement layer comprises a first strength layer and a second strength layer.

[0008] As a preferred solution of the combined spline anti-theft nut of the utility model, the reinforcing layer is fixedly connected to the outer surface of the base layer, and the functional layer is coated on the outer surface of the reinforcing layer.

[0009] As a preferred solution of the combined spline anti-theft nut described in the utility model, the waterproof layer is coated on the outer surface of the insulating layer, the anti-corrosion layer is coated on the outer surface of the waterproof layer, and the anti-corrosion and wear-resistant layer is coated on the outer surface of the anti-corrosion layer.

[0010] As a preferred solution of the combined spline anti-theft nut of the utility model, the thickness of the first strength layer is consistent with that of the second strength layer, and the second strength layer is coated on the outer surface of the first strength layer.

[0011] As a preferred solution of the combined spline anti-theft nut of the utility model, the anti-theft structure includes a groove, the inner wall of the groove is fixedly connected to a spring, and one end of the spring away from the inner wall of the groove is fixedly connected to a steel ball.

[0012] As a preferred solution of the combined spline anti-theft nut of the utility model, the anti-loosening mechanism includes a pad, and the back side of the pad is provided with anti-slip teeth.

[0013] As a preferred solution of the combined spline anti-theft nut of the utility model, the base layer is made of carbon steel, and the protective sleeve is made of PVC.

[0014] As a preferred solution of the combined spline anti-theft nut of the utility model, the material of the insulating layer is glass fiber coating, and the material of the waterproof layer is Dacromet coating.

[0015] As a preferred solution of the combined spline anti-theft nut described in the utility model, the material of the anti-corrosion layer is a zinc-nickel alloy coating, and the material of the anti-corrosion and wear-resistant layer is a metal-based ceramic composite coating.

[0016] As a preferred solution of the combined spline anti-theft nut of the utility model, the material of the first strength layer is a titanium alloy coating, and the material of the second strength layer is a chromium nitride coating.

[0017] The beneficial effects of the utility model are as follows: items can be installed and fixed by means of the nut body cooperating with the bolt, the anti-theft structure can prevent the nut body from being rotated in reverse, thereby achieving the purpose of theft prevention, the anti-theft structure can be limited by the protective cover, the protective cover can be taken out when in use, and the anti-loosening mechanism can further improve the tightness of the fixation to prevent the nut body from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 This is a first-person structural stereogram of a combined spline anti-theft nut.

[0020] Figure 2 This is a second-angle structural stereogram of the combined spline anti-theft nut.

[0021] Figure 3 It is a schematic cross-sectional view of the nut body of the combined spline anti-theft nut.

[0022] Figure 4 This is a schematic diagram of the nut main body material composition of the combined spline anti-theft nut.

[0023] Figure 5 Schematic diagram of the functional layer material composition of the combined spline anti-theft nut.

[0024] Figure 6 Schematic diagram of the composition of the reinforcement layer materials of the combined spline anti-theft nut. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Example 1

[0029] Reference Figures 1 to 6, is the first embodiment of the utility model, which provides a combined spline anti-theft nut, including a nut body 1, the inner cavity of the nut body 1 is provided with an anti-theft structure 2, the back of the nut body 1 is fixedly connected with an anti-loosening mechanism 3, the inner cavity of the nut body 1 is provided with a protective sleeve 4, the nut body 1 includes a base layer 5, a reinforcement layer 6 and a functional layer 7, the functional layer 7 includes an insulating layer 8, a waterproof layer 9, an anti-corrosion layer 10 and an anti-corrosion and wear-resistant layer 11, and the reinforcement layer 6 includes a first strength layer 12 and a second strength layer 13.

[0030] The nut body 1 and the bolts can be used to install and fix items. The anti-theft structure 2 can prevent the nut body 1 from being rotated in the opposite direction, thereby achieving the purpose of anti-theft. The anti-theft structure 2 can be limited by the protective cover 4, and the protective cover 4 can be removed when in use. The anti-loosening mechanism 3 can further improve the tightness of the fixation and prevent the nut body 1 from loosening.

[0031] Example 2

[0032] Reference Figures 1 to 6 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment.

[0033] Specifically, the reinforcement layer 6 is fixedly connected to the outer surface of the base layer 5 , and the functional layer 7 is coated on the outer surface of the reinforcement layer 6 .

[0034] Specifically, the waterproof layer 9 is coated on the outer surface of the insulating layer 8 , the anti-corrosion layer 10 is coated on the outer surface of the waterproof layer 9 , and the anti-corrosion and wear-resistant layer 11 is coated on the outer surface of the anti-corrosion layer 10 .

[0035] Specifically, the first strength layer 12 and the second strength layer 13 have the same thickness, and the second strength layer 13 is coated on the outer surface of the first strength layer 12 .

[0036] Specifically, the anti-theft structure 2 includes a groove 201 , an inner wall of the groove 201 is fixedly connected to a spring 202 , and an end of the spring 202 away from the inner wall of the groove 201 is fixedly connected to a steel ball 203 .

[0037] The inner wall of the groove 201 is an inclined surface, and the groove 201 is shallow on the top and deep on the bottom. When the nut body 1 rotates clockwise, the torque during rotation will cause the steel ball 203 to enter the deep part of the groove 201, so that the nut body 1 can rotate normally. The spring 202 can provide elastic potential energy to prevent the steel ball 203 from being in the deep part and unable to achieve the anti-theft function. When the nut body 1 wants to be rotated counterclockwise, the steel ball 203 will enter the shallow part from the deep part of the groove 201, and the steel ball 203 will be locked between the thread teeth to prevent the nut body 1 from being rotated in the opposite direction, thereby achieving the anti-theft function.

[0038] Specifically, the anti-loosening mechanism 3 includes a backing plate 301 , and anti-slip teeth 302 are arranged on the back side of the backing plate 301 .

[0039] The surface of the backing plate 301 is fixedly connected to the nut body 1 by welding. The welding connection can ensure the firmness of the connection between the backing plate 301 and the nut body 1. The anti-slip teeth 302 can increase the friction force, thereby preventing the nut body 1 from loosening during use.

[0040] Specifically, the base layer 5 is made of carbon steel, and the protective cover 4 is made of PVC.

[0041] Carbon steel material has the following advantages: high strength: able to withstand greater loads and stresses; low cost: relatively economical compared to some other special alloys; good machinability: easy to make into various shapes and structures through various processing methods; good wear resistance: exhibits certain durability in some friction environments; PVC has the following advantages: low cost, convenient injection molding and good heat resistance.

[0042] Specifically, the material of the insulating layer 8 is a glass fiber coating, and the material of the waterproof layer 9 is a Dacromet coating.

[0043] Glass fiber coating has the following advantages: high strength and high rigidity: greatly improves the mechanical properties of the base material; excellent corrosion resistance: can effectively resist the erosion of various corrosive media; good heat resistance: can work stably in a high temperature environment; good dimensional stability: helps to maintain the accuracy of the product shape; excellent electrical insulation performance: suitable for the electrical field; strong anti-aging performance: has a long service life; good fire retardancy: improves safety to a certain extent; Dacromet coating has the following advantages: excellent corrosion resistance: can effectively resist a variety of corrosive media, including acid rain, seawater, etc., to provide long-term and reliable protection; high heat resistance: can maintain stable performance at higher temperatures; good permeability: can evenly cover the surface of workpieces with complex shapes, including tiny gaps and corners; relatively good environmental protection: compared with traditional electroplating and other treatment methods, it has less pollution to the environment; strong weather resistance: can withstand the test of outdoor environment and maintain appearance and protective performance for a long time.

[0044] Specifically, the material of the anti-corrosion layer 10 is zinc-nickel alloy, and the material of the anti-corrosion and wear-resistant layer 11 is a metal-based ceramic composite coating.

[0045] Zinc-nickel alloy has the following advantages: Corrosion resistance: Zinc-nickel alloy coating performs well in resisting corrosion damage from surrounding media, and its corrosion resistance is better than that of zinc coating and cadmium coating; Protective performance: It can effectively protect the steel substrate from corrosion and has good protective effect in harsh environments; Mechanical properties: After plating, the mechanical properties of steel will not be changed, and it has good brazing properties and small internal stress of the coating; Appearance quality: It can make the coating uniform, bright and smooth, reduce the formation of burrs and nodules, and improve the appearance quality of the plated parts; Machinability: It has good machinability and can meet various molding requirements without damaging the coating; Metal-based ceramic composite coating has the following advantages: High hardness: It has high hardness and can effectively resist wear and scratches; Good chemical stability: It has good stability in corrosive media such as acids, alkalis, and salts; High temperature resistance: It can work for a long time in high temperature environment and is not easy to oxidize and deform; Good thermal stability: It has a low thermal expansion coefficient and good thermal shock resistance; Strong wear resistance: It can reduce the friction coefficient and improve wear resistance.

[0046] Specifically, the material of the first strength layer 12 is titanium alloy, and the material of the second strength layer 13 is chromium nitride.

[0047] Titanium alloy has the following advantages: high strength and high toughness: it has both high strength and good toughness, and excellent mechanical properties; low density: while having excellent performance, it has a relatively low density and is lighter than many other metal materials; strong corrosion resistance: it has good resistance to a variety of corrosive media and can remain stable in harsh environments; high temperature resistance: it can work normally at higher temperatures and has good heat resistance; chromium nitride has the following advantages: good anti-adhesion performance: chromium nitride coating can effectively reduce the adhesion between the tool and the workpiece material, reduce the generation of built-up edge, thereby improving the processing surface quality and tool life; high hardness: it has a high hardness and can effectively resist wear and scratches; strong corrosion resistance: it has good resistance to a variety of corrosive media and can remain stable in harsh environments; high temperature resistance: it can work for a long time in a high temperature environment and is not easy to oxidize and deform.

[0048] When in use, the inner wall of the groove 201 is an inclined surface, and the groove 201 is shallow on the top and deep on the bottom. When the nut body 1 rotates clockwise, the torque during rotation will cause the steel ball 203 to enter the deep part of the groove 201, so that the nut body 1 can rotate normally. The spring 202 can provide elastic potential energy to prevent the steel ball 203 from being in the deep part and unable to achieve the anti-theft function. When the nut body 1 wants to be rotated counterclockwise, the steel ball 203 will enter the shallow part from the deep part of the groove 201, and the steel ball 203 will be locked between the thread teeth to prevent the nut body 1 from being rotated reversely, thereby achieving the anti-theft function. The pad 301 and the anti-slip teeth 302 can increase the friction force, thereby preventing the nut body 1 from being The base layer 5 becomes loose during use, and the reinforcing layer 6 can improve the strength of the base layer 5 to prevent the base layer 5 from being easily deformed during use. The insulating layer 8 can improve the insulation effect of the anti-theft nut, thereby improving the safety of the anti-theft nut during use. The waterproof layer 9 is provided to block the water body, thereby preventing the water body from eroding the base layer 5 through the external layer. The anti-corrosion layer 10 can improve the anti-corrosion and waterproof capabilities of the anti-theft nut, thereby preventing corrosive substances from corroding the base layer 5, thereby ensuring that the anti-theft nut will not be corroded and damaged. The anti-corrosion and wear-resistant layer 11 can improve the waterproof, anti-corrosion and wear-resistant capabilities of the anti-theft nut, thereby preventing the anti-theft nut from being damaged during use and extending the service life of the anti-theft nut.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A combined spline anti-theft nut, characterized in that: The invention comprises a nut body (1), the inner cavity of which is provided with an anti-theft structure (2), the back of which is fixedly connected with an anti-loosening mechanism (3), the inner cavity of which is provided with a protective sleeve (4), the nut body (1) comprising a base layer (5), a reinforcement layer (6) and a functional layer (7), the functional layer (7) comprising an insulating layer (8), a waterproof layer (9), an anti-corrosion layer (10) and an anti-corrosion and wear-resistant layer (11), and the reinforcement layer (6) comprising a first strength layer (12) and a second strength layer (13).

2. The combined spline anti-theft nut according to claim 1, characterized in that: The reinforcing layer (6) is fixedly connected to the outer surface of the base layer (5), and the functional layer (7) is coated on the outer surface of the reinforcing layer (6).

3. The combined spline anti-theft nut according to claim 1, characterized in that: The waterproof layer (9) is coated on the outer surface of the insulating layer (8), the anti-corrosion layer (10) is coated on the outer surface of the waterproof layer (9), and the anti-corrosion and wear-resistant layer (11) is coated on the outer surface of the anti-corrosion layer (10).

4. The combined spline anti-theft nut according to claim 1, characterized in that: The thickness of the first strength layer (12) is consistent with that of the second strength layer (13), and the second strength layer (13) is coated on the outer surface of the first strength layer (12).

5. The combined spline anti-theft nut according to claim 1, characterized in that: The anti-theft structure (2) comprises a groove (201), the inner wall of the groove (201) being fixedly connected to a spring (202), and one end of the spring (202) away from the inner wall of the groove (201) being fixedly connected to a steel ball (203).

6. The combined spline anti-theft nut according to claim 1, characterized in that: The anti-loosening mechanism (3) comprises a backing plate (301), and anti-slip teeth (302) are arranged on the back side of the backing plate (301).

7. The combined spline anti-theft nut according to claim 1, characterized in that: The base layer (5) is made of carbon steel, and the protective cover (4) is made of PVC.

8. The combined spline anti-theft nut according to claim 1, characterized in that: The material of the insulating layer (8) is a glass fiber coating, and the material of the waterproof layer (9) is a Dacromet coating.

9. The combined spline anti-theft nut according to claim 1, characterized in that: The material of the anti-corrosion layer (10) is a zinc-nickel alloy coating, and the material of the anti-corrosion and wear-resistant layer (11) is a metal-based ceramic composite coating.

10. The combined spline anti-theft nut according to claim 1, characterized in that: The material of the first strength layer (12) is a titanium alloy coating, and the material of the second strength layer (13) is a chromium nitride coating.

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