Nut device capable of preventing looseness

Abstract

The utility model provides a nut device capable of preventing looseness, which comprises a nut and a knurled bottom, and the bottom of the nut is fixedly connected with the knurled bottom. The anti-falling gasket has the advantages that the design of the knurled bottom increases the contact area and friction force between the nut and the anti-falling gasket, the nut is effectively prevented from rotating under the action of external force, and therefore the possibility of loosening is reduced. After the nut is tightened, the foldable protrusion is manually bent and clamped into the clamping groove, and mechanical locking between the nut and the anti-disengaging gasket is achieved. By means of the design, additional safety guarantee is provided, the nut can be effectively prevented from loosening even under the extreme condition, due to the design of the wave contact face between the anti-disengaging gasket and the annular piece, the contact area is increased, and the good damping effect is achieved in the vibration environment through the wave-shaped structural characteristic. By means of the design, vibration energy is effectively dispersed, and the loosening risk caused by vibration is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-loosening nuts, in particular to a nut device which can prevent loosening. Background Art

[0002] A lock nut is a fastener designed to prevent the nut from loosening due to vibration, impact, thermal expansion, or contraction. A lock nut, also known as a self-tightening nut, is a fastener that increases the friction or pressure between the nut and the bolt through special design or additional devices to prevent the nut from loosening.

[0003] Conventional anti-loosening nuts generally have a washer between them and the working part, relying on the mechanical fastening force or friction between the washer and the nut to achieve the purpose of anti-loosening. However, such nuts are still easy to loosen under harsh installation conditions such as high-frequency vibration and impact. Therefore, a nut device that can prevent loosening is proposed, which can effectively prevent loosening even under extreme conditions. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0005] Therefore, one purpose of the present invention is to provide a nut device that can prevent loosening, so as to solve the problems mentioned in the background technology and overcome the shortcomings in the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the utility model provides a nut device capable of preventing loosening, comprising a nut and a knurled bottom, wherein the bottom of the nut is fixedly connected with the knurled bottom, an anti-slip washer is embedded below the knurled bottom, and a knurled structure matching the knurled bottom is provided on the top surface of the anti-slip washer;

[0007] A foldable protrusion is fixedly connected at several points on the side of the anti-drop washer, a slot is provided at the bottom edge of the nut, and the upwardly bent end of the foldable protrusion is inserted into the corresponding slot;

[0008] An annular piece is embedded at the bottom of the anti-slip washer, and the contact surface between the annular piece and the anti-slip washer is a wavy surface.

[0009] Preferably, any of the above schemes has thirty-two teeth on the knurled bottom, and the teeth on the knurled bottom are evenly distributed around the axis of the nut.

[0010] Adopting the above technical solution: the nut device comprises, from top to bottom, a nut, a knurled bottom, an anti-drop washer, and a ring.

[0011] The nut device has three anti-loosening means: first, the knurled bottom cooperates with the anti-slip washer, with the bolt and nut as the main body, and an anti-slip washer is installed between the nut and the external workpiece, the bottom surface of the nut adopts a knurled structure, i.e., the knurled bottom, and the top surface of the anti-slip washer is provided with a structure that cooperates with the knurled structure;

[0012] Secondly, the side of the anti-drop washer adopts a foldable protrusion, and a slot is provided at the edge of the nut. After the nut is tightened, the protrusion is manually bent and inserted into the slot;

[0013] Finally, a ring-shaped part is installed between the anti-slip washer and the external workpiece. The ring-shaped part and the bolt body can only slide up and down but cannot rotate relative to each other. At the same time, the contact surface between the anti-slip washer and the ring-shaped part adopts a wave design to prevent the nut from loosening due to vibration after being tightened.

[0014] Preferably, any of the above schemes is that the anti-dropping gasket is welded to the foldable protrusion, and the width of the foldable protrusion is the same as the width of the card slot.

[0015] Adopting the above technical solution: Compared with the conventional anti-loosening nut, the nut device, through the matching arrangement of the knurled bottom, the anti-drop washer, the foldable protrusion, the slot, and the ring, the design of the knurled bottom increases the contact area and friction between the nut and the anti-drop washer, effectively preventing the nut from rotating when subjected to external force, thereby reducing the possibility of loosening. The knurled structure cooperates with the corresponding structure on the anti-drop washer to form a self-locking mechanism. Even in a vibrating environment, this structure can maintain a stable connection state to ensure that the nut will not automatically loosen due to vibration. After tightening the nut, manually bend the foldable protrusion and snap it into the slot to achieve mechanical locking between the nut and the anti-drop washer. This design provides additional safety and can effectively prevent the nut from loosening even under extreme conditions.

[0016] The wave contact surface design between the anti-drop washer and the ring not only increases the contact area, but also has a good shock-absorbing effect in a vibration environment through the wave-shaped structural characteristics. This design effectively disperses the vibration energy and reduces the risk of loosening caused by vibration.

[0017] Preferably, in any of the above schemes, the foldable protrusion is made of stainless steel, and the slot is located on each side of the nut.

[0018] Preferably, any of the above schemes comprises an anti-dropping washer, a knurled bottom and a nut in sequence above the annular member.

[0019] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0020] The nut device that can prevent loosening is arranged by coordinating a knurled bottom, an anti-slip washer, a foldable protrusion, a slot, and a ring. The design of the knurled bottom increases the contact area and friction between the nut and the anti-slip washer, effectively preventing the nut from rotating when subjected to external force, thereby reducing the possibility of loosening. The knurled structure cooperates with the corresponding structure on the anti-slip washer to form a self-locking mechanism. Even in a vibrating environment, this structure can maintain a stable connection state to ensure that the nut will not automatically loosen due to vibration. After tightening the nut, the foldable protrusion is manually bent and snapped into the slot to achieve mechanical locking between the nut and the anti-slip washer. This design provides additional safety and can effectively prevent the nut from loosening even under extreme conditions.

[0021] The wave contact surface design between the anti-drop washer and the ring not only increases the contact area, but also has a good shock-absorbing effect in a vibration environment through the wave-shaped structural characteristics. This design effectively disperses the vibration energy and reduces the risk of loosening caused by vibration.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 It is a structural schematic diagram of the utility model from the first perspective;

[0025] Figure 2 It is a structural schematic diagram of the utility model from a second viewing angle;

[0026] Figure 3 It is a front view structural schematic diagram of the utility model.

[0027] In the figure: 1-nut, 2-knurled bottom, 3-anti-dropping washer, 4-foldable protrusion, 5-slot, 6-ring. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figure 1-3 As shown, the nut device capable of preventing loosening comprises a nut 1 and a knurled bottom 2, wherein the bottom of the nut 1 is fixedly connected with the knurled bottom 2, an anti-slip washer 3 is embedded below the knurled bottom 2, and a knurled structure matching the knurled bottom 2 is arranged on the top surface of the anti-slip washer 3;

[0031] A foldable protrusion 4 is fixedly connected at several points on the side of the anti-drop washer 3, and a slot 5 is provided at the bottom edge of the nut 1, and the upwardly bent end of the foldable protrusion 4 is inserted into the corresponding slot 5;

[0032] An annular member 6 is embedded in the bottom of the anti-slip washer 3 , and the contact surface between the annular member 6 and the anti-slip washer 3 is a wavy surface.

[0033] Embodiment 1: The number of teeth of the knurled bottom 2 is thirty-two, and the teeth of the knurled bottom 2 are evenly distributed around the axis of the nut 1. The nut device comprises, from top to bottom, a nut 1, a knurled bottom 2, an anti-slip washer 3, and an annular member 6. The anti-slip washer 3 is welded to the foldable protrusion 4, and the width of the foldable protrusion 4 is the same as the width of the slot 5.

[0034] Embodiment 2: The foldable protrusion 4 is made of stainless steel, and the slot 5 is located on each side of the nut 1. Above the ring 6 are the anti-slip washer 3, the knurled bottom 2 and the nut. The wave contact surface design between the anti-slip washer 3 and the ring 6 not only increases the contact area, but also has a good shock absorption effect in a vibration environment through the wave-shaped structural characteristics. This design effectively disperses the vibration energy and reduces the risk of loosening caused by vibration.

[0035] The working principle of the utility model is as follows:

[0036] The nut device comprises, from top to bottom, a nut 1, a knurled bottom 2, an anti-slip washer 3, and a ring 6. The nut device has three anti-loosening means: first, the knurled bottom 2 cooperates with the anti-slip washer 3, with the bolt and nut as the main body, and the anti-slip washer 3 is installed between the nut 1 and the external workpiece, the bottom surface of the nut 1 adopts a knurled structure, i.e., the knurled bottom 2, and the top surface of the anti-slip washer 3 is provided with a structure that cooperates with the knurled structure;

[0037] Secondly, the side of the anti-drop washer 3 adopts a foldable protrusion 4, and a slot 5 is provided at the edge of the nut 1. After the nut 1 is tightened, the protrusion is manually bent and inserted into the slot 5;

[0038] Finally, an annular part 6 is installed between the anti-slip washer 3 and the external workpiece. The annular part 6 and the bolt body can only slide up and down but cannot rotate relative to each other. At the same time, the contact surface between the anti-slip washer 3 and the annular part 6 adopts a wave design to prevent the nut 1 from loosening due to vibration after being tightened.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] The nut device that can prevent loosening is configured by the coordination of the knurled bottom 2, the anti-slip washer 3, the foldable protrusion 4, the slot 5, and the ring 6. The design of the knurled bottom 2 increases the contact area and friction between the nut 1 and the anti-slip washer 3, effectively preventing the nut from rotating when subjected to external force, thereby reducing the possibility of loosening. The coordination of the knurled structure and the corresponding structure on the anti-slip washer 3 forms a self-locking mechanism. Even in a vibrating environment, this structure can maintain a stable connection state to ensure that the nut 1 will not automatically loosen due to vibration. After tightening the nut 1, the foldable protrusion 4 is manually bent and snapped into the slot 5 to achieve mechanical locking between the nut 1 and the anti-slip washer 3. This design provides additional safety protection and can effectively prevent the nut 1 from loosening even under extreme conditions.

[0041] The wave contact surface design between the anti-drop washer 3 and the annular member 6 not only increases the contact area, but also has a good shock-absorbing effect in a vibration environment through the wave-shaped structural characteristics. This design effectively disperses the vibration energy and reduces the risk of loosening caused by vibration.

Claims

1. A nut device capable of preventing loosening, characterized in that: It comprises a nut (1) and a knurled bottom (2), wherein the bottom of the nut (1) is fixedly connected to the knurled bottom (2), an anti-slip washer (3) is embedded below the knurled bottom (2), and the top surface of the anti-slip washer (3) is provided with a knurled structure that matches the knurled bottom (2); A foldable protrusion (4) is fixedly connected at several points on the side of the anti-dropping washer (3), a slot (5) is provided at the bottom edge of the nut (1), and the upwardly bent end of the foldable protrusion (4) is inserted into the corresponding slot (5); An annular component (6) is embedded in the bottom of the anti-slip gasket (3), and the contact surface between the annular component (6) and the anti-slip gasket (3) is a wavy surface.

2. A nut device capable of preventing loosening according to claim 1, characterized in that: The number of teeth on the knurled bottom (2) is thirty-two, and the teeth on the knurled bottom (2) are evenly distributed around the axis of the nut (1).

3. A nut device capable of preventing loosening according to claim 2, characterized in that: The anti-drop gasket (3) is welded to the foldable protrusion (4), and the width of the foldable protrusion (4) is the same as the width of the card slot (5).

4. A nut device capable of preventing loosening according to claim 3, characterized in that: The foldable protrusion (4) is made of stainless steel, and the slot (5) is located on each side of the nut (1).

5. A nut device capable of preventing loosening according to claim 4, characterized in that: Above the annular member (6) are an anti-drop washer (3), a knurled bottom (2) and a nut.

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