A type of anti-loosening nut

Abstract

This invention relates to the field of fastener technology and proposes an anti-loosening nut, comprising a nut component with threads threaded onto a screw, and several elastic elements grouped together. The nut component is pressed onto a group of elastic elements, which are passed through by the screw. Each elastic element includes an arc-shaped body with an insertion groove at one end of its bottom surface and an elastic insertion portion at the other end. The elastic insertion portion of one arc-shaped body is used to insert into the insertion groove of an adjacent arc-shaped body. The arc-shaped bodies of several elastic elements are sequentially inserted to form a circular ring, and an elastic support portion is disposed at the lower part of the arc-shaped body. This technical solution solves the technical problem of poor anti-loosening effect in existing anti-loosening nuts.

Description

Technical Field

[0001] This invention relates to the field of fastener technology, and more specifically, to a locking nut. Background Technology

[0002] Currently, most nuts are standard parts. When they are used with bolts, elastic components are needed to increase the pressure between them, thereby increasing the extrusion force between the threads to achieve a tight fit and prevent loosening. Summary of the Invention

[0003] This invention proposes an anti-loosening nut, which solves the technical problem of poor anti-loosening effect of existing anti-loosening nuts in related technologies.

[0004] The technical solution of the present invention is as follows:

[0005] A lock nut for mounting on a screw, comprising:

[0006] A nut component, wherein the nut component is threaded onto the screw rod.

[0007] Elastic elements, a plurality of said elastic elements are grouped together (circumferentially arranged), the nut is pressed onto a group of said elastic elements, the elastic elements are passed through by the screw, and the elastic elements include

[0008] An arc-shaped main body has an insertion groove at one end of its bottom surface and an elastic insertion part at the other end. The elastic insertion part of one arc-shaped main body is used to insert into the insertion groove of an adjacent arc-shaped main body. Several arc-shaped main bodies with elastic elements are sequentially inserted to form a circular ring.

[0009] An elastic support portion is disposed at the lower part of the arc-shaped main body.

[0010] As a further technical solution, both the insertion groove and the elastic insertion part are arc-shaped, and the arc of the insertion groove is greater than the arc of the elastic insertion part.

[0011] As a further technical solution, both the insertion groove and the elastic insertion part are inclined outward along the radial direction of the annulus.

[0012] As a further technical solution, both the insertion groove and the elastic insertion part are spiral-shaped.

[0013] As a further technical solution, the elastic support part is elastic and has a U-shaped structure, with both ends connected to the arc-shaped main body.

[0014] As a further technical solution, the top of the inner wall of the annulus has an inner conical surface, and the nut has an outer conical surface, with the outer conical surface pressed against the inner conical surface.

[0015] As a further technical solution, the nut component has a number of slits arranged circumferentially, and the slits pass through the outer conical surface.

[0016] As a further technical solution, the outer wall of the nut also has an annular groove, which is adjacent to the outer conical surface, and the gap communicates with the annular groove.

[0017] As a further technical solution, the inner conical surface is eccentrically positioned relative to the screw.

[0018] The working principle and beneficial effects of this invention are as follows:

[0019] This invention addresses the poor anti-loosening effect of existing anti-loosening nuts by designing a superior anti-loosening nut composed of a nut component and an elastic component. After installation, the elastic component provides axial force along the screw axis to the nut component, increasing the friction between the nut and the screw thread. To ensure the radial force is sufficient to prevent the nut from loosening due to vibration, the elastic component features an arc-shaped body. The bottom ends of the arc-shaped body are respectively provided with insertion slots and elastic insertion parts. The elastic insertion part of one arc-shaped body is inserted into the insertion slot of an adjacent arc-shaped body. Several arc-shaped bodies of the elastic components form a circular ring, with the top surface of the ring abutting against the bottom surface of the nut component, and the elastic insertion parts inserted into the insertion slots. During the tightening process of the nut, the nut exerts a downward and outward force on the ring along the axial direction of the screw. The outward force along the axial direction of the screw is provided by the elastic deformation of the elastic insertion part, while the inward force along the axial direction of the screw is provided by the elastic support part at the bottom of the arc-shaped body. On the one hand, the inward force of the arc-shaped body on the nut along the axial direction of the screw increases the maximum static friction between the nut and the elastic part, thereby improving the effectiveness of the nut. On the other hand, the reaction force provided by the elastic support part is upward along the axial direction of the screw, increasing the friction between the nut and the screw thread and improving the anti-loosening effect. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the elastic element structure;

[0023] In the diagram: Nut part-1, elastic part-2, arc-shaped body-3, insertion groove-301, elastic insertion part-302, elastic support part-4, inner cone-5, outer cone-shaped surface-6, gap-7, annular groove-8. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figures 1-2 As shown, this embodiment proposes an anti-loosening nut for installation on a screw, including...

[0026] Nut 1, the thread of nut 1 is set on the screw rod.

[0027] Elastic element 2, a group of elastic elements 2 (circularly arranged), nut 1 is pressed onto a group of elastic elements 2, the elastic elements 2 are passed through by a screw, the elastic element 2 includes

[0028] An arc-shaped main body 3 has an insertion groove 301 at one end of its bottom surface and an elastic insertion part 302 at the other end. The elastic insertion part 302 of one arc-shaped main body 3 is used to insert into the insertion groove 301 of another adjacent arc-shaped main body 3. Several arc-shaped main bodies 3 with elastic elements 2 are sequentially inserted to form a circular ring.

[0029] Elastic support part 4 is provided at the lower part of the arc-shaped main body 3.

[0030] In this embodiment, considering the poor anti-loosening effect of existing anti-loosening nuts, a new anti-loosening nut with better anti-loosening effect is designed, consisting of a nut component 1 and an elastic component 2. After installation, the elastic component 2 provides axial force along the screw axis to the nut component 1, increasing the friction between the nut and the screw thread. To ensure that the radial force is sufficient to prevent the nut from loosening due to vibration, an arc-shaped body is provided on the elastic component 2. An insertion groove 301 and an elastic insertion part 302 are respectively provided at both ends of the bottom of the arc-shaped body. The elastic insertion part 302 of one arc-shaped body 3 is used to insert into the insertion groove 301 of another adjacent arc-shaped body 3. Several arc-shaped bodies 3 of the elastic components 2 form a circular ring. The top surface of the circular ring abuts against the bottom surface of the nut component 1, and the elastic insertion part 302 is inserted into the insertion groove 301. In step 01, during the tightening process of nut 1, nut 1 exerts a downward and outward force on the ring body along the axial direction of the screw. The outward force along the axial direction of the screw is provided by the elastic deformation of the elastic insertion part 302, while the inward force along the axial direction of the arc-shaped body 3 serves as a reaction force. The downward force along the axial direction of the screw exerted by nut 1 on elastic part 2 is provided by the elastic support part 4 at the lower part of the arc-shaped body. On the one hand, the inward force of the arc-shaped body 3 on nut 1 along the axial direction of the screw can increase the maximum static friction force on the contact surface between nut 1 and elastic part 2, thereby improving the anti-loosening effect of nut 1. On the other hand, the reaction force provided by the elastic support part 4 along the axial direction of the screw increases the friction force between the nut and the screw thread, improving the anti-loosening effect.

[0031] In this embodiment, compared with the prior art, the addition of elastic element 2 replaces the elastic pad. Compared with the elastic pad, elastic element 2 has stronger elasticity and greater yield strength.

[0032] Furthermore, both the insertion groove 301 and the elastic insertion part 302 are arc-shaped, with the curvature of the insertion groove 301 being greater than that of the elastic insertion part 302. In this embodiment, in order to provide the nut 1 with a greater force along the screw axial direction, both the insertion groove 301 and the elastic insertion part 302 are arc-shaped, with the curvature of the insertion groove 301 being greater than that of the elastic insertion part 302. Before the nut 1 presses onto the annular body formed by the sequential insertion of the arc-shaped main body 3, the annular body will have gaps between adjacent arc-shaped main bodies because the curvature of the elastic insertion part 302 is smaller than that of the insertion groove 301. When the nut 1 presses against the annular body, the elastic insertion part 302 will provide the nut 1 with an upward force along the screw axial direction, and the gaps between adjacent arc-shaped main bodies will gradually decrease. Through the elastic connector 302 acting on the arc-shaped main body 3, a force is generated on the nut 1 in the opposite direction along the screw axis, which increases the friction between the nut and the screw thread, thus improving the anti-loosening effect.

[0033] Furthermore, both the insertion groove 301 and the elastic insertion part 302 are inclined outward along the radial direction of the annulus. In this embodiment, in order to facilitate the insertion of the insertion groove 301 and the elastic insertion part 302, both the insertion groove 301 and the elastic insertion part 302 are inclined outward along the radial direction of the annulus, making the gap 7 between adjacent arc-shaped bodies larger, making the force provided by the annulus to the nut 1 along the axial direction of the screw greater, increasing the maximum static friction force that the nut 1 and the elastic part 2 need to overcome when rotating, thereby improving the anti-loosening effect.

[0034] Furthermore, both the insertion groove 301 and the elastic insertion part 302 are spiral-shaped. In this embodiment, in order to facilitate the insertion of the insertion groove 301 and the elastic insertion part 302, both the insertion groove 301 and the elastic insertion part 302 are designed to be spiral-shaped. Compared with the ordinary arc-shaped structure, the spiral structure is more evenly stressed in the annular body formed by the arc-shaped body and has a longer service life.

[0035] Furthermore, the elastic support part 4 is elastic and has a U-shaped structure, with both ends connected to the arc-shaped main body 3. In this embodiment, in order to ensure the elasticity and service life of the elastic support part 4, the elastic support part 4 is designed as a U-shape, and both ends of the U-shaped structure are connected to the arc-shaped main body 3, and have an arc in the opposite direction to the screw axis. The arc-shaped U-shaped structure increases the elasticity of the elastic support part 4 and enhances the anti-loosening effect of the nut.

[0036] Furthermore, the top of the inner wall of the annulus has an inner conical surface 5, and the nut component 1 has an outer conical surface 6, with the outer conical surface 6 pressing against the inner conical surface 5. In this embodiment, to ensure the cooperation effect between the nut component 1 and the elastic component 2, the top of the inner wall of the annulus has an inner conical surface 5, and the nut component 1 has an outer conical surface 6, with the outer conical surface 6 pressing against the inner conical surface 5.

[0037] Furthermore, the nut component 1 has several slits 7 arranged circumferentially, which pass through the outer conical surface 6. In this embodiment, to enhance the anti-loosening effect of the nut component 1, several slits 7 are provided on the nut component 1, and the slits 7 pass through the circumferential array of the outer conical surface 6. During the tightening process of the nut, as the outer conical surface abuts and locks against the inner conical surface, the slits 7 gradually decrease, and the bottom of the nut component 1 contracts towards the axis of the screw, increasing the friction between the nut component 1 and the screw and improving the anti-loosening effect.

[0038] Furthermore, the outer wall of the nut component 1 also has an annular groove 8, which is adjacent to the outer conical surface 6, and the gap 7 communicates with the annular groove 8. In this embodiment, in order to facilitate the deformation of the outer conical surface 6 at the bottom of the nut component 1, the outer wall of the nut component 1 is also provided with an annular groove 8, which is adjacent to the outer conical surface 6, thereby improving the anti-loosening effect of the nut component 1.

[0039] Furthermore, the inner conical surface 5 is eccentrically positioned with respect to the screw. In this embodiment, the eccentrically positioned inner conical surface 5 can cause the outer conical surface of the nut 1 to deviate from the central axis of the screw, forming a wedge-shaped structure between the nut 1 and the screw, which improves the anti-loosening effect and is simpler to process than existing anti-loosening nuts that never loosen.

[0040] The above are merely preferred embodiments of the present invention and are 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 within the protection scope of the present invention.

Claims

1. A lock nut for mounting on a threaded rod, characterized in that include Nut component (1), said nut component (1) is threaded onto the screw rod, An elastic element (2) is formed by circumferentially arranging several elastic elements (2) into a group. The nut (1) is pressed onto a group of elastic elements (2). The elastic elements (2) are passed through by the screw. The elastic elements (2) include: An arc-shaped main body (3) has an insertion groove (301) at one end of its bottom surface and an elastic insertion part (302) at the other end of its bottom surface. The elastic insertion part (302) of one arc-shaped main body (3) is used to insert into the insertion groove (301) of another adjacent arc-shaped main body (3). The arc-shaped main bodies (3) of several elastic elements (2) are sequentially inserted to form a circular ring. An elastic support part (4) is provided at the lower part of the arc-shaped body (3).

2. A lock nut according to claim 1, wherein Both the insertion groove (301) and the elastic insertion part (302) are arc-shaped, and the arc of the insertion groove (301) is greater than the arc of the elastic insertion part (302).

3. The anti-loosening nut according to claim 2, characterized in that, Both the insertion groove (301) and the elastic insertion part (302) are inclined outward along the radial direction of the annulus.

4. The anti-loosening nut according to claim 1, characterized in that, Both the insertion groove (301) and the elastic insertion part (302) are spiral-shaped.

5. The anti-loosening nut according to claim 1, characterized in that, The elastic support part (4) is elastic and has a U-shaped structure, with both ends connected to the arc-shaped main body (3).

6. The anti-loosening nut according to claim 1, characterized in that, The inner wall of the ring has an inner conical surface (5) at the top, and the nut (1) has an outer conical surface (6), which is pressed onto the inner conical surface (5).

7. The anti-loosening nut according to claim 6, characterized in that, The nut (1) has a slit (7), which is a plurality of slits arranged in a circle, and the slit (7) passes through the outer conical surface (6).

8. The anti-loosening nut according to claim 7, characterized in that, The outer wall of the nut (1) also has an annular groove (8), which is adjacent to the outer conical surface (6), and the gap (7) is connected to the annular groove (8).

9. A locking nut according to claim 6, characterized in that, The inner conical surface (5) is eccentrically positioned relative to the screw.

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