Anti-loosening external riveting nut and riveting method thereof

Abstract

The invention discloses an anti-loosening external riveting nut and a riveting method of the nut. The anti-loosening external riveting nut comprises a nut body and an anti-loosening element arranged on the periphery of the top of the nut body. The outer edge of the anti-loosening element does not exceed the outer wall face of the nut body. The nut body on the inner side of the anti-loosening element extends outwards towards the top to form a circle of protrusion, a circle of anti-loosening groove is formed between the protrusion and the anti-loosening element, the size of the nut body is miniaturized as much as possible, and therefore the purposes of saving space and materials are achieved. Meanwhile, the following rotation of the nut is prevented; friction force between the nut and a fastener is enhanced, and looseness is prevented.

Description

Technical Field

[0001] The invention relates to the field of mechanical fasteners, and in particular to a structurally optimized anti-loosening external riveted nut and a riveting method thereof. Background Art

[0002] In the prior art, rivet nuts are widely used in the connection and fastening of thin plate parts. However, in special use environments such as vibration and impact, traditional rivet nuts are easy to follow the rotation and become loose, affecting the fastening effect and connection reliability. In order to ensure the safety, stability and space saving of the connection, an improved rivet nut with an external rivet nut that can prevent loosening is needed. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an anti-loosening external riveted nut and a riveting method for the anti-loosening external riveted nut.

[0004] The technical solution adopted by the present invention to solve its technical problem is: construct an anti-loosening external riveted nut, including a nut body and an anti-loosening element arranged around the top of the nut body, the outer edge of the anti-loosening element does not exceed the outer wall surface of the nut body; the nut body inside the anti-loosening element extends a circle of protrusions outward from the top, and a circle of anti-loosening grooves is formed between the protrusions and the anti-loosening element. The anti-loosening element includes a plurality of anti-slip teeth for close contact with the inner wall of the riveting hole during the riveting process, the anti-slip teeth are arranged radially in a circle, and the outer edge of the anti-slip teeth does not exceed the outer wall surface of the nut body. The anti-slip teeth are distributed in the circumferential direction. The anti-slip teeth are arranged in accordance with the inner diameter of the riveting hole. The outer wall surface of the protrusion extends a circle of convex edges to form a flange structure, which cooperates with the anti-loosening element and the anti-loosening groove to lock the riveted part. The opening of the anti-loosening groove is located above the anti-loosening groove, and the width of the opening is smaller than the groove body width of the anti-loosening groove, so as to lock the riveted part riveted into the anti-loosening groove. The bottom surface of the anti-slip groove is lower than the top surface of the anti-slip tooth, forming a circle of concave structure. The bending radius of the tooth peak of the anti-slip tooth is equal to the bending radius of the tooth valley of the anti-slip tooth, and the tooth heights of any adjacent tooth peaks are equal. The height of the tooth height of the anti-slip tooth is twice the bending radius of the tooth peak, and the height of the tooth height of the anti-slip tooth is twice the bending radius of the tooth valley.

[0005] A riveting method for an anti-loosening external riveted nut, the method comprising the following steps:

[0006] S1: Align the anti-loosening external rivet nut with the target hole of the rivet part and buckle the anti-loosening external rivet nut into the target hole of the rivet part;

[0007] S2: Insert the riveted part into the anti-loosening groove of the anti-loosening external rivet nut;

[0008] S3: Use a torque tool to twist the anti-loosening external rivet nut, and the anti-slip teeth on the anti-loosening element are close to the target hole, and the anti-slip teeth and the target hole form an interference fit.

[0009] The implementation of the present invention has the following beneficial effects: the volume of the nut body of the present application is miniaturized as much as possible, thereby achieving the purpose of saving space and materials; the nut is prevented from rotating; the friction between the nut and the fastener is enhanced to prevent loosening; the evenly distributed anti-slip teeth can withstand large external force impact and vibration, and maintain a long-term fastening effect; the evenly distributed anti-slip teeth are easy to operate and install, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work. In the drawings:

[0011] Figure 1 is a three-dimensional schematic diagram of an anti-loosening external riveted nut in some embodiments of the present invention;

[0012] Figure 2 is a plan view of an anti-loosening external rivet nut in some embodiments of the present invention;

[0013] Figure 3 The invention is a method for preventing the external rivet nut from loosening in some embodiments of the invention. Figure 2 BB cross-sectional view;

[0014] Figure 4 The invention is a method for preventing the external rivet nut from loosening in some embodiments of the invention. Figure 2 A local enlarged schematic diagram of the middle A;

[0015] Figure 5 The anti-loosening external rivet nut in some embodiments of the present invention Figure 3 A partial enlarged schematic diagram of point C in the middle;

[0016] Figure 6 is a cross-sectional view of a crimped anti-loosening external rivet nut in some embodiments of the present invention;

[0017] Figure 7 The anti-loosening external rivet nut in some embodiments of the present invention Figure 6 A partial enlarged view of the cross-sectional view at D in the middle;

[0018] Figure 8 is a schematic diagram of an anti-loosening external rivet nut before installation in some embodiments of the present invention; and

[0019] Fig. 9It is a schematic diagram of the anti-loosening external rivet nut after installation in some embodiments of the present invention.

[0020] The reference numerals are as follows: 1 - nut body; 2 - anti-loosening element; 21 - anti-slip teeth; 3 - protrusion; 41 - anti-slip groove; 42 - opening. DETAILED DESCRIPTION

[0021] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0022] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0023] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0024] See also Figure 1In some embodiments, the present invention shows an anti-loosening external riveted nut for fixing and connecting riveted parts, including a nut body 1 and an anti-loosening element 2 arranged at the top periphery of the nut body 1, and the outer edge of the anti-loosening element 2 does not exceed the outer wall surface of the nut body 1; the nut body 1 on the inner side of the anti-loosening element 2 extends outward from the top with a circle of protrusions 3, and a circle of anti-loosening grooves 41 are formed between the protrusions 3 and the anti-loosening element 2.

[0025] Specifically, the nut body 1 is different from the common hexagonal body on the market. The present application adopts a cylindrical nut body 1. The nut body 1 realizes the function of fastening and connecting by cooperating with a bolt or other threaded parts. It can fix two or more parts to prevent them from loosening or separating, thereby ensuring the normal operation and stability of the equipment. Conventional hexagonal nuts have six equal surfaces and can be easily rotated and tightened by tools such as wrenches or torque wrenches. The present application adopts a cylindrical nut body 1. If the cylindrical nut body 1 is twisted with tools such as wrenches or torque wrenches, the cylindrical structure is more likely to slip than the hexagonal column structure. Therefore, the cylindrical nut body 1 is not twisted by a wrench or torque wrench. The anti-loosening external riveted nut has an internal thread, which is tightened by rotating the internal thread. A circle of anti-slip grooves 41 formed between the protrusion 3 and the anti-loosening element 2 can effectively prevent the riveted part from accidentally falling off during the tightening process. At the same time, the anti-slip groove 41 is used to fix the nut and the riveted part to improve its anti-loosening effect. The outer edge of the anti-loosening element 2 does not exceed the outer wall surface of the nut body 1, so as to ensure that it will not interfere with other components during installation. A circle of protrusions 3 extending outward from the top is provided on the part of the nut body 1 on the inner side of the anti-loosening element 2. This can increase the contact area between the nut and the anti-loosening element 2 and improve the overall fastening effect. At the same time, the protrusion 3 is mainly used to cooperate with the anti-loosening element 2 to strengthen the fixation of the nut and the rivet to prevent it from falling off or shifting during use. The nut body 1 is not a force-bearing body, so the volume of the nut body 1 of the present application can be miniaturized as much as possible, thereby achieving the purpose of saving space and saving materials.

[0026] See also Figure 2 , Figure 2 1 is a plan view of an anti-loosening external riveted nut in some embodiments of the present invention. In some embodiments, the anti-loosening element 2 includes a plurality of anti-slip teeth 21 for closely contacting the inner wall of the target hole during the riveting process, the anti-slip teeth 21 are radially arranged in a circle, and the outer edge of the anti-slip teeth 21 does not exceed the outer wall surface of the nut body 1.

[0027] The outer edge of the anti-slip teeth 21 does not exceed the outer wall surface of the nut body 1. When the fastener (such as a bolt) is matched with the nut, it can better prevent the fastener from loosening under vibration or impact conditions and prevent the nut from rotating.

[0028] The anti-skid teeth 21 are arranged on the nut, and their outer edges usually have a certain angle and shape, which can provide additional friction when tightening or loosening the bolt, thereby enhancing the tightening effect of the nut. The outer edge does not exceed the outer wall surface of the nut body 1, so that the anti-skid teeth 21 will not exceed the outer wall surface of the nut body 1 while providing sufficient friction, thereby avoiding other problems caused by excessive protrusion of the outer edge. The anti-skid teeth 21 can provide additional friction when the nut is tightened or loosened, thereby enhancing the tightening effect of the nut and ensuring a more secure connection between the bolt and the nut.

[0029] The number of anti-slip teeth 21 in the anti-loosening element 2 is determined according to actual needs and the specific specifications of the fastener. The number of these anti-slip teeth 21 is sufficient to ensure that they can fully contact the inner wall of the target hole during the riveting process, thereby achieving a better fastening effect. The anti-slip teeth 21 are arranged radially, that is, they are arranged along one direction (usually the radial direction of the nut body 1). This arrangement allows the anti-slip teeth 21 to be more evenly distributed on the nut body 1, so that they can better contact the inner wall of the target hole during the riveting process, thereby improving the fastening effect. The outer edge of the anti-slip teeth 21 is set not to exceed the outer wall surface of the nut body 1, so as to ensure that during the riveting process, the anti-slip teeth 21 can smoothly enter the target hole and closely contact the inner wall.

[0030] See also Figure 3 , anti-loosening external rivet nut Figure 2 BB cross-sectional view in FIG. In some embodiments, the anti-skid teeth 21 are distributed in the circumferential direction. The anti-skid teeth 21 are distributed in the circumferential direction in a uniform and continuous manner. This means that the anti-skid teeth 21 are distributed over the entire circumference of the nut body 1, and the angles between each anti-skid tooth 21 are equal, thereby ensuring full contact between the fastener and the inner wall of the target hole.

[0031] By distributing the anti-skid teeth 21 in the circumferential direction, the fastener can disperse the force more evenly during the riveting process, thereby making the fastening more secure. This can ensure that the fastener can maintain a stable fastening effect in various working environments. The anti-skid teeth 21 distributed in the circumferential direction can fully contact the inner wall of the target hole, thereby increasing the friction force and preventing the fastener from loosening during use. Even in environments such as vibration or impact, the stability of the fastener can be effectively maintained. Figure 3 yes Figure 2 The enlarged view of the part at C in the middle. Figure 2 The local enlarged view of C will be Figure 5 Discuss in detail.

[0032] Figure 4 Some embodiments of the anti-loosening external rivet nut Figure 2A partial enlarged schematic diagram of point A of the nut body 1; an anti-slip groove 41 is provided at the joint of the nut body 1 and the anti-loosening element 2. The anti-slip teeth 21 are arranged to match the inner diameter of the target hole. At the same time, the height and number of the anti-slip teeth 21 should also be reasonably set according to actual needs to achieve the best anti-slip effect. The size of the anti-slip teeth 21 should match the inner diameter of the target hole to ensure that they can smoothly enter the hole and fit tightly during the installation process. The opening 42 of the anti-slip groove 41 is located above the anti-slip groove 41, and the width of the opening 42 is smaller than the groove body width of the anti-slip groove 41, so that the riveted part riveted into the anti-slip groove 41 is locked. The opening 42 of the anti-slip groove 41 is located above the anti-slip groove 41, and this arrangement facilitates the smooth entry and locking of the riveted part. Since the width of the opening 42 is smaller than the groove body width of the anti-slip groove 41, this forms a natural locking mechanism.

[0033] When the rivet is riveted into the anti-slip groove, it will be captured by the width restriction at the opening 42, and thus fixed in the groove body, achieving a locking effect. Since the width of the opening 42 is smaller than the groove body width of the anti-slip groove, the rivet will be firmly fixed in the anti-slip groove 41, thereby achieving the effect of preventing it from falling off. This locking method is simple and effective, and does not require additional fixing devices or steps. The layer plate with the rivet hole is embedded in the anti-slip groove 41, and the layer plate with the rivet hole can be stuck in the anti-slip groove 41.

[0034] The anti-slip groove 41 can match the shape of the rivet hole. Such an anti-slip groove 41 can provide stable support and positioning to ensure that the layer plate will not move or loosen. At the same time, the anti-slip groove 41 makes the fixing process easier. You only need to align the rivet hole of the layer plate with the anti-slip groove 41, and then press the rivet nut into the rivet hole to fix it.

[0035] The anti-slip groove 41 is a locking device that can effectively fix the layer board with the riveting hole, providing better stability and safety. The width of the anti-slip groove 41 is a, and the length of a is preferably 0.48 mm. The height of the opening 42 of the anti-slip groove 41 is b, and the length of b is preferably 0.19 mm. Figure 4 As can be seen in the partial enlarged view of the cross-sectional view, the plane of the bottom surface of the anti-slip groove 41 is lower than the plane of the top surface of the anti-slip tooth 21, so that the riveting hole can be squeezed in the longitudinal direction, squeezing the riveting hole into the anti-slip groove 41, and at the same time limiting the riveting hole in the longitudinal direction.

[0036] from Figure 4It can be seen that the distance from the plane of the bottom surface of the anti-slip groove 41 to the plane of the top surface of the anti-slip tooth 21 is c, where the preferred length of c is 0.13 mm. The plane of the bottom surface of the anti-slip groove 41 is lower than the plane of the top surface of the anti-slip tooth 21, so that the rivet hole is limited in the horizontal direction, which is usually used to ensure the accurate alignment and fixation of the rivet hole to prevent horizontal deviation or movement during installation or use. By limiting the rivet hole in the horizontal direction, the stability and accuracy of the layer board or part can be ensured, so that it can be accurately riveted or otherwise connected to other parts or structures, which can improve the reliability and safety of the entire structure and prevent problems or failures caused by horizontal movement.

[0037] In some embodiments, the anti-slip groove 41 has an arc-shaped opening on the upper side close to the axis, and the arc-shaped opening has an arc-shaped surface, and the radius of the arc-shaped surface is d, where d is preferably 0.2 mm. The embedded depth of the opening 42 of the anti-slip groove 41 is e, where e is preferably 0.2 mm. The embedded depth can limit the rivet hole in the longitudinal direction.

[0038] The arc surface of the arc mouth can have a sliding effect on the riveting hole when it is pushed into the anti-slip groove 41. The arc surface of the arc mouth can provide a unique sliding effect for the riveting hole, which helps the riveting hole to be smoothly pushed into the anti-slip groove 41, which not only simplifies the riveting process, but also improves the stability and reliability of the connection. The arc surface of the arc mouth provides a smooth guide for the riveting hole, so that the riveting hole can be smoothly pushed along the arc surface. This guiding effect reduces the friction and resistance during the riveting process, making the operation smoother; the setting of the arc surface allows the riveting hole to be appropriately adjusted according to the shape of the arc surface during the advancement process, so as to better adapt to the shape and size of the anti-slip groove 41. This adaptability helps to improve the tightness and stability of the connection; the surface of the arc surface usually has a certain lubricity, which can reduce the friction between the riveting hole and the arc surface, and further promote the smooth advancement of the riveting hole.

[0039] In some embodiments, the arc surface can provide a smooth advancement process for the riveting hole, and the operator can push the riveting hole into the anti-slip groove 41 faster, thereby improving the efficiency of the riveting operation; through the sliding action of the arc surface, the riveting hole can better adapt to the shape and size of the anti-slip groove 41, thereby enhancing the stability and reliability of the connection, which helps to improve the service life and safety of the product; the setting of the arc surface makes the riveting process simpler and more convenient, reducing the labor intensity and operation difficulty of the operator. The opening of the anti-slip groove 41 is located above the anti-slip groove 41, and the width of the opening 42 is smaller than the width of the groove body of the anti-slip groove 41 itself, allowing the rivet to enter smoothly, and after entering, the anti-slip teeth 21 are firmly connected to the structure by riveting or other fixing methods. Once the rivet is fixed, it will be locked by the restriction at the opening 42, thereby preventing the possibility of falling off.

[0040] Continue to refer Figure 3 and Figure 4 In some embodiments, a flange extends from the outer wall of the protrusion 3 to form a flanging structure, and the flanging structure cooperates with the anti-loosening element 2 and the anti-slip groove 41 to lock the riveted part. The protrusion 3 is located on the outer wall of the riveted part, and a flange extends outward from the outer wall. The formation of this flange allows the riveted part to produce a certain deformation during the assembly process, so as to better cooperate with other structures. The flanging structure can increase the contact area between the riveted part and the matching parts, and improve the stability of the connection. At the same time, the flanging structure can also play a certain anti-loosening role, and can keep the connection tight even in a vibration or impact environment.

[0041] The anti-loosening element 2 is an important component for enhancing the connection stability of the riveted parts. It cooperates with the flange structure and prevents the riveted parts from loosening during use through a certain locking mechanism. The anti-loosening element 2 forms a locking mechanism by closely fitting with the flange structure of the protrusion 3. Specifically, the shape and size of the anti-loosening element 2 must match the flange structure to ensure that it can be smoothly embedded and tightly fitted during the assembly process. In this way, even in a vibration or impact environment, the anti-loosening element 2 can effectively prevent the riveted parts from loosening by closely fitting with the flange structure.

[0042] In some embodiments, the bottom surface of the anti-slip groove 41 is lower than the top surface of the anti-slip tooth 21, forming a circle of concave structure, which helps to increase the stability of the structure and the grip of the object, making the object less likely to fall off or slip. The anti-slip tooth 21 includes a tooth peak and a tooth valley, that is, the highest part of the tooth is the tooth peak, and the lowest part is the tooth valley. The bending radius of the tooth peak of the anti-slip tooth 21 is equal to the bending radius of the tooth valley of the anti-slip tooth 21, and the tooth heights of any adjacent tooth peaks are equal, which enhances the anti-slip function. The height of the tooth height of the anti-slip tooth 21 is twice the bending radius of the tooth peak, and because the bending radius of the tooth peak of the anti-slip tooth 21 is equal to the bending radius of the tooth valley of the anti-slip tooth 21, the tooth heights of any adjacent tooth peaks are equal, which makes the distribution of the tooth peaks and tooth valleys uniform, which can increase the friction coefficient of the surface, thereby improving the anti-slip performance. At the same time, the appropriate tooth height can ensure stability and reliability during the transmission process, taking into account not only the anti-slip effect, but also the strength and durability of the structure.

[0043] Figure 5 Some embodiments of the anti-loosening external rivet nut Figure 3A partial enlarged schematic diagram at C in the figure. The bending radius of the tooth peak of the anti-skid tooth 21 is equal to the bending radius of the tooth valley of the anti-skid tooth 21. The bending radius of the tooth peak of the anti-skid tooth 21 is h, and h is preferably 0.15 mm. The bending radius of the tooth valley of the anti-skid tooth 21 is f, and f is preferably 0.15 mm. The anti-skid tooth 21 is mainly provided to increase the friction between objects, improve the grip and anti-skid performance of objects, and further solve the technical problem of nut slipping during rotation. The application of the anti-skid tooth 21 in the figure can effectively improve the stability and efficiency during transmission. It is mainly composed of a series of teeth, which include tooth peaks and tooth valleys. The tooth peak is the protruding part, and the tooth valley is the recessed part between the two tooth peaks. The bending radius refers to the radius of the center of curvature in a curve or curved part. The bending radius affects the performance and comfort of use.

[0044] In some embodiments, in the setting of the anti-skid teeth 21, the bending radius of the tooth peak and the tooth valley is a key parameter. In order to achieve the anti-skid effect, special attention is usually paid to the shape and size of these two parts. The bending radius of the tooth peak of the anti-skid tooth 21 is equal to the bending radius of the tooth valley of the anti-skid tooth 21. This setting can make the transmission process more balanced, reduce stress concentration, and improve the service life; by making the bending radius of the tooth peak and the tooth valley equal, the friction and wear in the transmission process can be reduced, thereby improving the transmission efficiency; this setting can increase the contact area and friction between the mating parts, thereby improving the anti-skid performance, so that it can maintain a good working state under various working conditions; due to the reduction of stress concentration and friction and wear, this setting has a longer service life and higher reliability.

[0045] Keep watching Figure 5 In some embodiments, the height of the tooth height of the anti-skid tooth 21 is twice the bending radius of the tooth peak, and the height of the tooth height of the anti-skid tooth 21 is twice the bending radius of the tooth valley. The height of the tooth height of the anti-skid tooth 21 is g, and g is preferably 0.3 mm. In the setting of the anti-skid tooth 21, the height of the tooth height is an important parameter. If the bending radius is too small, it may cause excessive stress during high-speed operation, thereby reducing the service life of the. If the bending radius is too large, it may affect the anti-skid effect. Therefore, when selecting the bending radius, it is necessary to comprehensively consider the strength and anti-skid effect.

[0046] The height of the tooth height is twice the bending radius of the tooth peak, which can ensure that there is sufficient contact area and friction between the tooth peak and the driven object during operation, thereby providing a good anti-skid effect and further solving the technical problem of the nut slipping during rotation. Corresponding to the tooth peak is the tooth valley, that is, the recessed part between two adjacent tooth peaks. In the anti-skid tooth 21, the height of the tooth height is also twice the bending radius of the tooth valley. Such a design can ensure that there is also sufficient contact area and friction between the tooth valley and the driven object, further enhancing the anti-skid effect. The appropriate bending radius can ensure strength and durability during operation.

[0047] Figure 6 FIG. 1 is a cross-sectional view of the crimping of the anti-loosening external rivet nut of some embodiments of the present invention. Figure 6 It can be clearly seen that the plate has the anti-loosening external rivet nut pressed onto the plate through the rivet hole, and the plate is embedded in the anti-loosening groove 41. Figure 4 A riveting method for an anti-loosening external riveted nut comprises the following steps:

[0048] S1: Align the anti-loosening external rivet nut with the target hole of the rivet part and buckle the anti-loosening external rivet nut into the target hole of the rivet part;

[0049] S2: inserting the riveted piece into the anti-loosening groove 41 of the anti-loosening external riveting nut;

[0050] S3: Use a torque tool to twist the anti-loosening external rivet nut, so that the anti-slip teeth 21 on the anti-loosening element 2 are close to the target hole, and the anti-slip teeth 21 and the target hole form an interference fit.

[0051] Figure 6 There is also a local enlarged view D, which will be Figure 7 Further details are displayed.

[0052] Figure 7 It is a partially enlarged view of a cross-sectional view of an anti-loosening external rivet nut in some embodiments of the present invention.

[0053] Figure 8Schematic diagram of the anti-loosening external rivet nut before installation in some embodiments of the present invention. In some embodiments, the anti-loosening external rivet nut is used between two plates or two components that need to be connected, and it acts as a connector. The anti-loosening external rivet nut adopts an external setting, which is easy to install and does not require special tools and skills, which can greatly improve work efficiency. In the fields of construction, furniture manufacturing, vehicle manufacturing, etc., it is often necessary to connect two plates together. At this time, the anti-loosening external rivet nut plays an important role. It can effectively connect the two plates together firmly through screws or other fasteners, providing strong support and stability. In addition to the connection between the plates, the anti-loosening external rivet nut can also be used for the connection between two components. Whether in machinery, electronics or other fields, this nut can be used as a bridge between connecting elements to ensure tight connection and stable operation between various parts.

[0054] Fig. 9 Schematic diagram of the anti-loosening external riveted nut after installation in some embodiments of the present invention. As can be seen in the figure, because the nut body 1 does not need to bear torque, the space occupied by the nut body 1 is very small. Therefore, after the anti-loosening external riveted nut is installed, a lot of space can be saved. This advantage is crucial for many devices or mechanical systems that require high-density installation. For example, in the fields of automobile manufacturing, aerospace, and precision instruments, space is usually limited, and the installation of each component requires delicate settings and precise layout. By using the anti-loosening external riveted nut, more space can be released for the installation or use of other components. The setting of the anti-loosening external riveted nut allows enough space for the installer to operate other components after installation. This feature is of great significance for improving work efficiency and reducing work accidents. The installer no longer needs to find space to avoid the installed nuts, and can perform subsequent operations more easily, thereby improving the construction progress of the entire project. In addition, the anti-loosening external riveted nut not only provides convenience in space, but also has the function of preventing loosening. This function is indispensable in many applications that require high stability and safety. Since the tightness of the nut is enhanced, loosening due to vibration or other external factors can be effectively avoided, thereby improving the stability and safety of the entire mechanical system.

[0055] In some embodiments, the anti-loosening external rivet nut is stable and easy to operate, which can significantly reduce the rework caused by loose nuts or inconvenient operation. This means that not only can work efficiency be improved, but also the additional cost and resource waste caused by rework can be reduced. By providing better operating space and stable fastening effect, the anti-loosening external rivet nut helps to improve the quality of the entire engineering installation. It can ensure that the connection between the various components is tighter and more stable, thereby reducing potential problems caused by loose connections. The setting of the anti-loosening external rivet nut also helps with the maintenance and upgrading of the equipment. Since the space is effectively used and optimized, maintenance personnel can more easily access and inspect the components inside the equipment. In addition, if equipment upgrades or replacement of components are required in the future, the setting of this nut will not become an obstacle, but will provide more convenience.

[0056] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the scope covered by the claims of the present invention.

Claims

1. An anti-loosening external riveted nut, characterized in that: The invention comprises a nut body (1) and an anti-loosening element (2) arranged at the periphery of the top of the nut body (1), wherein the outer edge of the anti-loosening element (2) does not exceed the outer wall surface of the nut body (1); the nut body (1) inside the anti-loosening element (2) has a circle of protrusions (3) extending outward from the top, and a circle of anti-slip grooves (41) are formed between the protrusions (3) and the anti-loosening element (2).

2. The anti-loosening external riveted nut according to claim 1, characterized in that: The anti-loosening element (2) comprises a plurality of anti-slip teeth (21) for tightly contacting the inner wall of the target hole during the riveting process, wherein the anti-slip teeth (21) are radially arranged in a circle, and the outer edges of the anti-slip teeth (21) do not exceed the outer wall surface of the nut body (1).

3. The anti-loosening external riveted nut according to claim 2, characterized in that: The anti-slip teeth (21) are distributed along the circumference of the nut body (1).

4. The anti-loosening external riveted nut according to claim 2, characterized in that: The anti-slip teeth (21) are arranged to be consistent with the inner diameter of the target hole.

5. The anti-loosening external riveted nut according to claim 1 or 2, characterized in that: The outer wall surface of the protrusion (3) extends a circle of convex edges to form a flange structure, and the flange structure cooperates with the anti-loosening element (2) and the anti-slip groove (41) to lock the riveted part.

6. The anti-loosening external riveted nut according to claim 4, characterized in that: The opening (42) of the anti-slip groove (41) is located above the anti-slip groove (41), and the width of the opening (42) is smaller than the width of the groove body of the anti-slip groove (41), so that the riveted piece riveted into the anti-slip groove (41) is locked.

7. The anti-loosening external riveted nut according to claim 5, characterized in that: The bottom surface of the anti-slip groove (41) is lower than the top surface of the anti-slip teeth (21), forming a circle of concave structure.

8. The anti-loosening external riveted nut according to claim 6, characterized in that: The bending radius of the tooth peak of the anti-skid tooth (21) is equal to the bending radius of the tooth valley of the anti-skid tooth (21), and the tooth heights of any adjacent tooth peaks are equal.

9. The anti-loosening external riveted nut according to claim 7, characterized in that: The tooth height of the anti-slip teeth (21) is twice the bending radius of the tooth peak and the tooth valley.

10. A riveting method for an anti-loosening external riveted nut according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: aligning the anti-loosening external rivet nut with the target hole of the rivet part and buckling the anti-loosening external rivet nut into the target hole of the rivet part; S2: inserting the rivet piece into the anti-loosening groove (41) of the anti-loosening external rivet nut; S3: Using a torque tool to twist the anti-loosening external rivet nut, the anti-slip teeth (21) on the anti-loosening element (2) are placed close to the target hole, and the anti-slip teeth (21) and the target hole form an interference fit.

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