Integrated self-locking nut

Abstract

The utility model discloses an integrated self-locking nut which comprises a nut body, a screw rod is installed at the lower end of the nut body, a nut body is connected to the surface of the screw rod in a sleeved mode, a fixing piece is installed on the inner ring of the top of the nut body, an elastic petal is fixedly installed at the inner end of the fixing piece, and two parts of the elastic petal are symmetrically arranged in an arc shape. According to the self-locking nut, the elastic petals and the locking threads are arranged, when the nut is screwed on the screw rod, the elastic petals are elastically deformed, the locking threads are tightly matched with the threads on the inner wall of the nut, friction force between the nut and the screw rod is increased, and therefore the self-locking function is achieved, the nut is prevented from loosening, and the reinforcing rod in the screw rod is connected with the locking block. The strength of the threaded rod is enhanced, the nut can be prevented from rotating to a certain degree, the connection stability is further improved, the anti-theft cover plate above the nut can prevent other people from disassembling the locking block at will through the cross-shaped groove, then connection of the nut is protected, and the anti-theft performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of nut technology, specifically an integrated self-locking nut. Background Technology

[0002] In the field of mechanical connections, nuts are widely used as important connecting parts. Traditional nuts are prone to loosening under conditions of high vibration or long-term stress, which affects the stability and reliability of the connection. To solve this problem, various self-locking nuts have emerged. However, existing self-locking nuts have some shortcomings in structural design and performance. The self-locking structure of some self-locking nuts is too complex, the manufacturing cost is high, and the anti-theft performance of self-locking nuts is poor. They are easy to disassemble and are easily damaged when subjected to large loads. Utility Model Content

[0003] The purpose of this invention is to provide an integrated self-locking nut, which has the advantages of high self-locking strength and anti-theft function.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an integrated self-locking nut, including a nut, a screw rod installed at the lower end of the nut, a nut sleeved on the surface of the screw rod, a fixing plate installed on the inner ring of the top of the nut, an elastic flap fixedly installed at the inner end of the fixing plate, the elastic flap being arranged in two symmetrical arc shapes, a locking thread installed on the outer side of the elastic flap, the locking thread engaging with the thread on the inner wall of the nut, an installation groove being provided in the inner cavity of the top of the nut, a locking block being installed inside the installation groove via a threaded line, and a cross groove being provided on the top of the locking block.

[0005] As a preferred embodiment, the screw has a vertically oriented receiving groove inside, and a reinforcing rod is threaded inside the receiving groove. The upper end of the reinforcing rod is connected to the bottom of the locking block.

[0006] As a preferred embodiment, the surface of the screw is provided with a through groove, and the surface of the reinforcing rod is provided with annularly distributed protrusions, the outer ends of which extend to the outside of the through groove and are staggered with the thread lines on the outside of the screw.

[0007] As a preferred embodiment, an anti-theft cover is installed above the nut, and the diameter of the anti-theft cover is the same as that of the mounting groove.

[0008] As a preferred embodiment, a washer is installed on the surface of the screw and above the nut, and a rubber pad is provided on the top of the washer.

[0009] As a preferred embodiment, the inner wall of the elastic flap is further provided with a number of protrusions, and the protrusions are arranged along the axial direction of the elastic flap.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model, by setting an elastic flap and locking threads, allows the elastic flap to deform elastically when the nut is tightened onto the screw. The locking threads tightly engage with the inner thread of the nut, increasing the friction between the nut and the screw, thus achieving a self-locking function and preventing the nut from loosening. The reinforcing rod inside the screw is connected to the locking block, which not only enhances the strength of the screw but also prevents the nut from rotating to a certain extent, further improving the stability of the connection. The anti-theft cover on top of the nut prevents others from arbitrarily disassembling the locking block through the cross groove, thereby protecting the connection of the nut and improving the anti-theft performance.

[0012] 2. This utility model increases the friction between the nut and the connected parts by the presence of the gasket and rubber pad. The rubber pad has good elasticity and friction, and can effectively prevent the nut from rotating when subjected to external forces such as vibration and impact, prevent the nut from loosening, and ensure the stability of the connection. Even after long-term use or in harsh working environments, it can maintain a good tightness. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0014] Figure 2 This is a perspective view of the internal structure of the mounting slot of this utility model;

[0015] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0016] Figure 4 This is a partial cross-sectional view of the internal structure of this utility model.

[0017] In the diagram: 1. Nut; 2. Screw; 3. Nut; 4. Fixing plate; 5. Elastic flap; 6. Locking thread; 7. Reinforcing rod; 8. Protrusion; 9. Mounting groove; 10. Locking block; 11. Cross groove; 12. Anti-theft cover; 13. Gasket; 14. Rubber pad. Detailed Implementation

[0018] 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.

[0019] Secondly, the term "an 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 phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0020] Example 1:

[0021] Please see Figure 1 As shown, this utility model provides an integrated self-locking nut, including a nut 1, a screw 2 installed at the lower end of the nut 1, a nut 3 sleeved on the surface of the screw 2, a fixing plate 4 installed on the inner ring of the top of the nut 3, an elastic flap 5 fixedly installed at the inner end of the fixing plate 4, the elastic flap 5 is arranged in two symmetrical arc shapes, a locking thread 6 is installed on the outside of the elastic flap 5, the locking thread 6 is engaged with the thread on the inner wall of the nut 3, an installation groove 9 is opened in the inner cavity of the top of the nut 1, a locking block 10 is installed in the inside of the installation groove 9 through the thread, and a cross groove 11 is opened on the top of the locking block 10.

[0022] This technical solution, by setting up an elastic flap 5 and a locking thread 6, allows the elastic flap 5 to elastically deform when the nut 3 is tightened onto the screw 2. The locking thread 6 tightly engages with the thread on the inner wall of the nut 3, increasing the friction between the nut 3 and the screw 2, thereby achieving a self-locking function and preventing the nut 3 from loosening. The reinforcing rod 7 inside the screw 2 is connected to the locking block 10, which not only enhances the strength of the screw 2 but also prevents the nut 3 from rotating to a certain extent, further improving the stability of the connection. The anti-theft cover 12 above the nut 1 can prevent others from arbitrarily disassembling the locking block 10 through the cross groove 11, thereby protecting the connection of the nut 3 and improving the anti-theft performance.

[0023] Example 2:

[0024] Based on Embodiment 1, this utility model is as follows: Figure 3 As shown, the screw 2 has a vertically arranged receiving groove inside, and a reinforcing rod 7 is threaded inside the receiving groove. The upper end of the reinforcing rod 7 is connected to the bottom of the locking block 10.

[0025] Adopting such Figure 1 The technical solution shown has a reinforcing rod 7 installed in the receiving groove of the screw 2, which is equivalent to providing an additional support structure for the screw 2. When the nut 3 is subjected to external force, especially large tension or pressure, the reinforcing rod 7 can share the load borne by the screw 2, thereby effectively enhancing the overall strength and rigidity of the screw 2, reducing the possibility of the screw 2 deforming or breaking due to force, improving the reliability and safety of the nut 3 during use, and extending its service life.

[0026] Secondly, in the technical solution, a through groove is opened on the surface of the screw 2, and a ring-shaped protrusion 8 is installed on the surface of the reinforcing rod 7. The outer end of the protrusion 8 extends to the outside of the through groove and is staggered with the thread line on the outside of the screw 2. An anti-theft cover 12 is installed above the nut 1. The diameter of the anti-theft cover 12 is the same as that of the mounting groove 9.

[0027] Its adoption is as follows Figure 1 The technical solution shown indicates that when the nut 3 is screwed onto the screw 2, the protrusion 8 will interfere with the inner surface of the nut 3 connected to the other lower end. This interference can effectively prevent the nut 3 from rotating freely on the screw 2, further enhancing the self-locking performance of the nut 3 and preventing the nut 3 from loosening under conditions such as vibration and impact, thus ensuring the stability of the connection structure. This structure makes the connection between the reinforcing rod 7 and the screw 2 no longer just a threaded connection. The cooperation between the protrusion 8 and the through groove increases the mechanical connection strength between the two, making the reinforcing rod 7 and the screw 2 form a tighter whole, improving the load-bearing capacity and reliability of the entire nut 3 structure.

[0028] Example 3:

[0029] This utility model is as follows Figures 1-4 As shown, a washer 13 is installed on the surface of the screw 2 above the nut 3, and a rubber pad 14 is provided on the top of the washer 13; a number of protrusions are also provided on the inner wall of the elastic petal 5, and the protrusions are arranged along the axial direction of the elastic petal 5.

[0030] By adopting the above technical solution, the presence of gasket 13 and rubber pad 14 increases the friction between nut 3 and the connected parts. Rubber pad 14 has good elasticity and friction. When subjected to external forces such as vibration and impact, it can effectively prevent nut 3 from rotating, prevent nut 3 from loosening, and ensure the stability of the connection. Even after long-term use or in harsh working environments, it can maintain a good tightness.

[0031] The working principle of this utility model is as follows: By setting the elastic flap 5 and the locking thread 6, when the nut 3 is tightened on the screw 2, the elastic flap 5 undergoes elastic deformation, and the locking thread 6 is tightly engaged with the thread on the inner wall of the nut 3, increasing the friction between the nut 3 and the screw 2, thereby achieving a self-locking function and preventing the nut 3 from loosening. The reinforcing rod 7 inside the screw 2 is connected to the locking block 10, which not only enhances the strength of the screw 2, but also prevents the rotation of the nut 3 to a certain extent, further improving the stability of the connection. The anti-theft cover 12 above the nut 1 can prevent others from arbitrarily disassembling the locking block 10 through the cross groove 11, thereby protecting the connection of the nut 3 and improving the anti-theft performance.

[0032] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0033] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. An integral self-locking nut, comprising a nut (1), characterized in that: The lower end of the nut (1) is fitted with a screw (2), and a nut (3) is fitted onto the surface of the screw (2). A fixing plate (4) is installed on the inner ring of the top of the nut (3). An elastic flap (5) is fixedly installed on the inner end of the fixing plate (4). The elastic flap (5) is arranged in two symmetrical arc shapes. A locking thread (6) is installed on the outside of the elastic flap (5). The locking thread (6) is engaged with the thread on the inner wall of the nut (3). An installation groove (9) is opened in the inner cavity of the top of the nut (1). A locking block (10) is installed inside the installation groove (9) through a thread. A cross groove (11) is opened on the top of the locking block (10).

2. The integrated self-locking nut according to claim 1, characterized in that: The screw (2) has a vertically arranged receiving groove inside, and a reinforcing rod (7) is threaded inside the receiving groove. The upper end of the reinforcing rod (7) is connected to the bottom of the locking block (10).

3. The integrated self-locking nut according to claim 2, characterized in that: The screw (2) has a through groove on its surface, and the reinforcing rod (7) has annularly distributed protrusions (8) on its surface. The outer end of the protrusions (8) extends to the outside of the through groove and is staggered with the threaded lines outside the screw (2).

4. The integrated self-locking nut according to claim 1, characterized in that: An anti-theft cover (12) is installed above the nut (1), and the diameter of the anti-theft cover (12) is the same as that of the mounting groove (9).

5. The integrated self-locking nut according to claim 1, characterized in that: A washer (13) is installed on the surface of the screw (2) and above the nut (3), and a rubber pad (14) is provided on the top of the washer (13).

6. The integrated self-locking nut according to claim 1, characterized in that: The inner wall of the elastic flap (5) is provided with several protrusions, and the protrusions are arranged along the axial direction of the elastic flap (5).

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