Anti-loosening assembly and method

Abstract

The invention relates to the field of part machining, and discloses an anti-loosening assembly which comprises a first assembly, a second assembly and an extending piece, the first assembly and the second assembly are provided with threads matched with each other, the extending piece is arranged between the first assembly and the second assembly and extends outwards from the first assembly, and the first assembly is provided with internal threads. The second assembly is provided with an external thread matched with the internal thread, and the first assembly is provided with a clamping assembly in the direction facing the extending piece. The anti-loosening device has the advantages that the anti-loosening technical problem is solved, and the anti-loosening device is simple, efficient and high in application value.

Description

Technical Field

[0001] The present invention relates to the field of part processing, and particularly to a loosening prevention component and method. Background Art

[0002] For assemblies that rely on threads for mating, such as nuts and bolts, it is extremely important for such assemblies to prevent them from leaving a predetermined position along the mating threads when they reach the predetermined position through the threads. Currently, there are various ways in the prior art to achieve the purpose of preventing loosening. However, considering cost and the feasibility of withdrawing from the predetermined position after loosening prevention. Based on the above purposes, in particular, the convenience of processing and the ease of withdrawing from the predetermined position after loosening prevention need to be considered. Therefore, the prior art needs to be correspondingly modified. Summary of the Invention

[0003] Aiming at the disadvantages of the prior art that components capable of preventing loosening cannot balance the convenience of processing and the ease of withdrawing from the predetermined position after loosening prevention, the present invention provides a loosening prevention component and method.

[0004] To achieve the above object, the present invention can adopt the following technical solutions:

[0005] A loosening prevention component, a clamping component that can be deformed by reducing the distance between two components due to the mating of a first component and a second component with mutually matching threads is placed between the first component and the second component. After deformation, the clamping opening of the clamping component undergoes corresponding deformation, causing the extension of the first component to be pressed by the clamping opening, resulting in the relative fixation of the positional relationship between the first component and the second component, thereby achieving the purpose of preventing loosening.

[0006] It includes a first component, a second component with mutually matching threads respectively, and an extension extending outward from the first component and arranged between the first component and the second component. An internal thread is provided on the first component, and an external thread matching the internal thread is provided on the second component. A clamping component is arranged on the first component in the direction of the extension. The clamping component extends around the second component. The clamping component includes a clamping opening that applies pressure from the outside to the inside along the radial direction of the second component towards the extension. The clamping opening is located at one end of the clamping component. The other end of the clamping component extends towards the second component until the second component or a first surface fixed relative to the first component. The clamping component further includes an elastic curved surface. The concave side of the curved surface faces the second component or the first surface and can be deformed during the process of screwing the first component and the second component together.

[0007] As an alternative solution, in the present application, the shape of the bayonet includes at least a part, and the bending degree of this part is different from that of the remaining part of the bayonet.

[0008] As an alternative solution, in the present application, the bayonet includes at least two sides respectively located on both sides of the bayonet and a notch located between adjacent sides.

[0009] As an alternative solution, in the present application, the notch has a shape with a gradually decreasing width along the direction of the side surface of the bayonet.

[0010] As an alternative solution, in the present application, the part of the bayonet close to the clamping component extends substantially perpendicular to the surface of the extension member.

[0011] As an alternative solution, in the present application, the part of the extension member in contact with the bayonet includes a second surface with an inclination angle relative to the extension direction of the second component.

[0012] As an alternative solution, in the present application, the extension member and the bayonet are assembled through the second surface.

[0013] As an alternative solution, in the present application, the inclination angle of the second surface makes the outer side of the part of the extension member far from the first component relatively farther from the second component than the outer side of the part close to the first component.

[0014] As an alternative solution, in the present application, the extension member is a part of the first component with an internal thread.

[0015] As an alternative solution, in the present application, at least a part of the clamping component located on the outer side of the curved surface includes a part presenting a straight line segment along the radial direction of the second component.

[0016] The present invention has the following remarkable technical effects:

[0017] It has a good anti-loosening effect and low manufacturing cost. It only needs to machine the extension member on the first component / nut, which can be completed together during the machining process of the nut. Since the extension member can be regarded as a part of the nut, it is equivalent to only need to perform a circular cutting on one surface of the nut to obtain the extension member. As for the clamping component, in terms of the existing process, it only needs to be produced by methods such as sheet metal or extrusion, and the processing cost is extremely low.

[0018] Furthermore, in order to improve the anti-loosening effect, the bayonet is designed to be non-circular, which can apply irregular forces around the clamping component and make the clamping component present irregular deformations at the same time. This kind of deformation can effectively increase the static friction coefficient and can generate a force different from the normal direction, thereby improving the anti-loosening effect.

[0019] In addition, due to the design of the bayonet, its elasticity is designed to change in a relatively linear manner. When tightening the nut, the increase in the reverse resistance applied to the nut is more linear, so it is easier to control the degree of nut tightening. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Side view schematic of the anti-loosening component.

[0021] Figure 2 Another side view schematic of the anti-loosening component.

[0022] Figure 3 Top view schematic of the clamping component of the anti-loosening component.

[0023] Figure 4 For Figure 3 Sectional view taken along the A-A direction of

[0024] Figure 5 Schematic diagram of the anti-loosening component observed laterally.

[0025] Figure 6 For Figure 5 Sectional view taken along the A-A direction of DETAILED DESCRIPTION OF THE INVENTION

[0026] The present invention will be further described in detail below in conjunction with the embodiments.

[0027] Embodiment 1

[0028] As Figures 1-6 shown, an extension member includes a first component 100, a second component 200 with mutually matching threads, and an extension member 300 extending outward from the first component 100 and disposed between the first component 100 and the second component 200. Generally, the first component 100 is a nut, and the second component 200 is a screw or a part of a screw fixed to an object.

[0029] An internal thread 101 is provided on the first component 100, and an external thread matching the internal thread 101 is provided on the second component 200. A clamping component 400 is provided in the direction of the first component 100 towards the extension member 300. The extension member 300 extends around the second component 200 to form a cylindrical structure. The diameter of the cylindrical extension member 300 is relatively small compared to the first component 100 or the nut. For different processes, internal threads may or may not be provided on the inner wall of the extension member 300. The clamping component 400 includes a clamping opening 401 that applies pressure from the outside to the inside in the radial direction of the second component 200 towards the extension member 300. The clamping opening 401 on the clamping component 400 is sleeved outside the extension member 300. The clamping opening 401 is located at one end of the clamping component 400. The other end of the clamping component 400 extends towards the second component 200 until it reaches the second component 200 or a first surface 500 fixed relative to the first component 100. At this time, the second component 200 or the first surface 500 refers to an object or surface that the clamping component 400 can abut against under the pressure of the first component 100 or the nut. This object or surface and the first component 100 or the nut jointly apply an inward extrusion force to the clamping component 400, thereby causing the clamping component 400 to deform. The clamping component 400 further includes an elastic curved surface 302, which is the main source of deformation. The concave side of the curved surface 302 faces the second component 200 or the first surface 500 and can be deformed during the tightening process of the first component 100 and the second component 200. The curved surface 302 makes the clamping component 400 present a bowl shape. Generally, this curved surface can extend around the second component 200 or the screw, but in the embodiments of the present application, the overall curved surface of the clamping component 400 can also be irregular.

[0030] Further, the shape of the clamping opening 401 includes at least a part, and the bending degree of this part is different from that of the remaining part of the clamping opening 401. This bending degree can be expressed as curvature or a similar measure. This structure can make the pressing force between the clamping opening 401 and the extension member 300 irregular and variable along the direction around the second component 200 or the screw, and can effectively cause the extension member 300 to produce irregular deformation accordingly, thereby increasing the static friction force and preventing relative sliding between the extension member 300 and the clamping component 400.

[0031] Furthermore, the bayonet 401 includes at least two edges located on both sides of the bayonet and a notch 303 located between adjacent edges. If there are two notches 303, the bayonet 401 will be in a walnut shape, which is conducive to controlling the deformation of the clamping assembly 400. At the same time, the elastic force caused by the deformation is also in a gentle change. As the nut is tightened and the extension is compressed, the increase in the elastic force of the feedback nut is relatively stable, which can better control the size of the nut's progress along the thread.

[0032] Furthermore, the notch 303 has a shape with a gradually decreasing width along the side of the bayonet 401 , that is, has a pointed end, which is beneficial for controlling the stress concentration area on the clamping component 400 .

[0033] Furthermore, the portion of the bayonet 401 close to the extension piece 300 extends along a surface roughly perpendicular to the extension piece 300 to form a shape roughly perpendicular to the second component 200 or the length direction of the screw, similar to a bowl-shaped bottom, which can maximize the pressure applied to the extension piece 300.

[0034] Further, the contact portion of the extension member 300 and the bayonet 401 includes a second surface 401 with an inclination relative to the extension direction of the second component 200. Further, the extension member 300 and the bayonet 401 are assembled through the second surface 401. The second surface 401 formed with an inclination can increase the contact area between the clamping component 400 and the bayonet 401 of the extension member 300, and can form an assembly relationship at the same time. Optionally, the inclination is 90 degrees.

[0035] Furthermore, the extension piece 300 is a portion of the first component 100 with an internal thread. Therefore, after the first component 100 or the nut is formed, the outer portion of the first component 100 or the nut can be cut around the thread, and the portion close to the internal thread is retained, so that the extension piece 300 on the first component 100 can be directly formed.

[0036] Furthermore, the outer portion of the clamping assembly 400 located on the curved surface 302 at least includes a portion presenting a straight line segment along the radial direction of the second assembly 200. Due to the existence of the curved surface 302, at least a portion of the outer side of the curved surface of the clamping assembly 400 forms an inclination angle other than 90 degrees with the second assembly 200 or the screw. The inclination angle of the second surface 401 makes the outer side of the portion of the clamping assembly 400 away from the first assembly 100 relatively close to the outer side of the portion of the first assembly 100, and further away from the second assembly 200, which can prevent the clamping assembly 400 from moving toward the portion of the extension member 300 close to the first assembly 100, which is relatively less prone to deformation, thereby reducing the deformation effect of the extension member.

[0037] A method for preventing loosening, in which a clamping component 400 that can be deformed due to the reduction of the distance between the first component 100 and the second component 200 based on the matching of threads is placed between the first component 100 and the second component 200 with mutually matching threads. After the clamping component 400 is deformed, the bayonet thereof undergoes corresponding deformation, causing the extension 300 of the first component 100 to be pressed by the bayonet 401, resulting in the relative fixation of the positional relationship between the first component 100 and the second component 200, thereby achieving the purpose of preventing loosening.

[0038] In summary, the above are only the preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope covered by the patent of the present invention.

Claims

1. An anti-loosening component, characterized in that: A clamping component (400) is placed between a first component (100) and a second component (200) having mutually matching threads, and can be deformed by reducing the distance between the first component (100) and the second component (200) based on the matching of the threads. After the deformation, the clamping component (400) has a corresponding deformation in its bayonet, so that the extension piece (300) of the first component (100) is compressed by the bayonet (401), resulting in a relatively fixed positional relationship between the first component (100) and the second component (200), thereby achieving the purpose of loosening; The invention comprises a first component (100), a second component (200) and an extension piece (300) arranged between the first component (100) and the second component (200) and extending outward from the first component (100), wherein the first component (100) is provided with an internal thread (101), and the second component (200) is provided with an external thread matching the internal thread (101), and a clamping component (400) is arranged in the direction from the first component (100) to the extension piece (300), wherein the clamping component (400) extends around the second component (200), and the clamping component (400) comprises a thread extending along the second component (200). ), the bayonet (401) applying pressure from the outside to the inside toward the extension piece (300) in a radial direction of the first component (100), the bayonet (401) being located at one end of the clamping assembly (400), the other end of the clamping assembly (400) extending toward the second component (200) until reaching the second component (200) or a first surface (500) fixed relative to the first component (100), the clamping assembly (400) further comprising an elastic curved surface (302), the concave side of the curved surface (302) facing the second component (200) or the first surface (500) and being deformable during the process of tightening the first component (100) and the second component (200).

2. The anti-loosening assembly according to claim 1, characterized in that: The shape of the bayonet (401) includes at least a portion, and the bending degree of the portion is different from that of the remaining portion of the bayonet (401).

3. The anti-loosening assembly according to claim 1, characterized in that: The bayonet (401) comprises at least two edges respectively located on two sides of the bayonet and a notch (303) located between adjacent edges.

4. The anti-loosening assembly according to claim 3, characterized in that: The notch (303) is in a shape with a gradually decreasing width along the side of the bayonet (401).

5. The anti-loosening assembly according to claim 1, characterized in that: The portion of the bayonet (401) close to the clamping assembly (400) extends along a surface substantially perpendicular to the extension member (300).

6. The anti-loosening assembly according to claim 1, characterized in that: The portion where the extension piece (300) and the bayonet (401) are in contact comprises a second surface (401) with an inclination relative to the extension direction of the second component (200).

7. The anti-loosening assembly according to claim 6, characterized in that: The extension piece (300) and the bayonet (401) are assembled via the second surface (401).

8. The anti-loosening assembly according to claim 6, characterized in that: The inclination angle of the second surface (401) causes the outer side of the extension piece (300) away from the first component (100) to be relatively close to the outer side of the first component (100) and further away from the second component (200).

9. The anti-loosening assembly according to claim 1, characterized in that: The extension piece (300) is a portion of the first component (100) having an internal thread.

10. The anti-loosening assembly according to claim 1, characterized in that: The outer portion of the clamping component (400) located on the curved surface (302) at least includes a portion presenting a straight line segment along the radial direction of the second component (200).

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