Anti-loosening external riveting nut

Abstract

The utility model discloses an anti-loosening external riveting 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 utility model relates to the field of mechanical fasteners, in particular to an external riveted nut with optimized structure and anti-loosening. Background Art

[0002] In existing technology, rivet nuts are widely used to connect and fasten thin plate parts. However, in special operating environments such as vibration and impact, traditional rivet nuts are prone to loosening due to rotation, affecting the fastening effect and connection reliability. 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. Utility Model Content

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

[0004] The present invention solves the technical problem by employing a technical solution: constructing an anti-loosening external riveted nut, comprising a nut body and an anti-loosening element disposed around the top periphery of the nut body, the outer edge of the anti-loosening element not exceeding the outer wall surface of the nut body; a raised ring extends outward from the top of the nut body inside the anti-loosening element, forming a ring of anti-slip grooves between the raised rings 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 riveted hole during riveting. The anti-slip teeth are radially arranged in a circle, and the outer edges of the anti-slip teeth do not exceed the outer wall surface of the nut body. The anti-slip teeth are distributed circumferentially. The anti-slip teeth are arranged to match the inner diameter of the riveted hole. A convex edge extends from the outer wall of the raised ring, forming a flange structure. This flange structure, in conjunction with the anti-loosening element and the anti-slip groove, locks the riveted part. The opening of the anti-slip groove is located above the anti-slip groove and is narrower than the width of the anti-slip groove, thereby locking the riveted part riveted into the anti-slip groove. The bottom surface of the anti-slip groove is lower than the top surface of the anti-slip teeth, forming a circle of concave structure. The curvature radius of the anti-slip tooth peak is equal to the curvature radius of the anti-slip tooth valley, and the tooth height of any adjacent tooth peak is equal. The height of the anti-slip tooth is twice the curvature radius of the tooth peak, and the height of the anti-slip tooth is twice the curvature 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 rivet 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. The anti-slip teeth on the anti-loosening element are pressed against the target hole, and an interference fit is formed between the anti-slip teeth and the target hole.

[0009] The implementation of the utility model 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; preventing the nut from rotating; enhancing the friction between the nut and the fastener to prevent loosening; the evenly distributed anti-slip teeth can withstand large external force impact and vibration, maintaining 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 illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can derive other relevant drawings based on these drawings without inventive effort. In the drawings:

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

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

[0013] Figure 3 It is the anti-loosening external riveted nut in some embodiments of the utility model. Figure 2 BB cross-sectional view;

[0014] Figure 4 It is the anti-loosening external riveted nut in some embodiments of the utility model. Figure 3 A partial enlarged schematic diagram of point C in the middle;

[0015] Figure 5 The anti-loosening external rivet nut in some embodiments of the present invention Figure 2 A partial enlarged schematic diagram of point A 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] Figure 9 This 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 and are constructed and operated in specific directions. They are only for the convenience of describing the present technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0022] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, and they can be internal connections between two elements or interactions 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 intervening elements. The terms "first", "second", and "third" are only used to facilitate the description of the present technical solution and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", and "third" can explicitly or implicitly include one or more of these features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent 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 avoid obscuring the description of the present invention with unnecessary detail.

[0024] See also Figure 1In some embodiments, the utility model shows an anti-loosening external rivet nut for fixing and connecting riveted parts, comprising a nut body 1 and an anti-loosening element 2 arranged around the top of the nut body 1, 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 is formed between the protrusions 3 and the anti-loosening element 2.

[0025] Specifically, the nut body 1 differs from the common hexagonal bodies on the market. This application utilizes a cylindrical nut body 1. The nut body 1 achieves a secure connection by cooperating with a bolt or other threaded component. It secures two or more components, preventing 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 using tools such as wrenches or torque wrenches. This application utilizes a cylindrical nut body 1. If a tool such as a wrench or torque wrench is used to twist the cylindrical nut body 1, the cylindrical structure is more prone to slipping than the hexagonal structure. Therefore, twisting the cylindrical nut body 1 with a wrench or torque wrench is not required. This anti-loosening external rivet nut has an internal thread that is tightened by rotating the internal thread. A ring of anti-slip grooves 41 formed between the protrusion 3 and the anti-loosening element 2 effectively prevents the rivet from accidentally falling off during tightening. Furthermore, the anti-slip grooves 41 serve to secure the nut to the rivet, enhancing 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 mainly cooperates 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 this 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 This is a top view of an externally riveted nut with a non-loosening feature in some embodiments of the present invention. In some embodiments, the anti-loosening element 2 includes a plurality of anti-slip teeth 21 for close contact with the inner wall of the target hole during the riveting process. The anti-slip teeth 21 are arranged radially in a circle, and the outer edges of the anti-slip teeth 21 do not extend beyond the outer wall 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-slip teeth 21 are attached to the nut, and their outer edges typically have a specific angle and shape, providing additional friction when tightening or loosening the bolt, thereby enhancing the nut's securement. By not extending the outer edge beyond the outer surface of the nut body 1, the anti-slip teeth 21 provide sufficient friction without protruding beyond the outer surface of the nut body 1, thus avoiding other problems caused by an excessively protruding outer edge. The anti-slip teeth 21 provide additional friction when tightening or loosening the bolt, thereby enhancing the nut's securement and ensuring a more secure connection between the bolt and 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 make close contact with 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-slip teeth 21 are distributed circumferentially. The circumferential distribution of the anti-slip teeth 21 is characterized by uniformity and continuity. This means that the anti-slip teeth 21 are distributed throughout the entire circumference of the nut body 1, and the angles between each anti-slip tooth 21 are equal, thereby ensuring full contact between the fastener and the inner wall of the target hole.

[0031] By distributing the anti-slip teeth 21 circumferentially, the fastener distributes force more evenly during the riveting process, resulting in a more secure fastening. This ensures a stable fastening effect under various working conditions. The circumferentially distributed anti-slip teeth 21 fully contact the inner wall of the target hole, increasing friction and preventing the fastener from loosening during use. This effectively maintains the fastener's stability even in environments such as vibration and impact. Figure 3 yes Figure 2 BB cross-sectional view, the Figure 2 The enlarged view of the part at A will be Figure 5 Discuss in detail.

[0032] Figure 4 The anti-loosening external rivet nut of some embodiments Figure 3A partial enlarged schematic diagram of point C; 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 width of the groove body of the anti-slip groove 41, which locks the riveted part riveted into the anti-slip groove 41. The opening 42 of the anti-slip groove 41 is located above the anti-slip groove 41. This arrangement facilitates the smooth entry and locking of the riveted part. Since the width of the opening 42 is smaller than the width of the groove body of the anti-slip groove 41, this forms a natural locking mechanism.

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

[0034] The anti-slip groove 41 matches the shape of the rivet hole. This provides stable support and positioning, ensuring that the shelf will not move or loosen. It also simplifies the fixing process. Simply align the rivet hole of the shelf with the anti-slip groove 41 and press the rivet nut into the rivet hole to secure.

[0035] The anti-slip groove 41 is a locking device that can effectively fix the layer board with riveted holes, providing better stability and safety. The width of the anti-slip groove 41 is a, the length of a is preferably 0.48 mm, and the height of the opening 42 of the anti-slip groove 41 is b, the length of b is preferably 0.19 mm. Figure 4 As can be seen in the partially 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 rivet hole can be squeezed in the longitudinal direction, squeezing the rivet hole into the anti-slip groove 41, and at the same time limiting the rivet 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 offset or movement during installation or use. By limiting the rivet hole in the horizontal direction, the stability and accuracy of the layer plate or part can be ensured, so that it can be accurately riveted or otherwise connected to other components 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 above the side near the axis. The arc-shaped opening has a curved surface with a radius d, where d is preferably 0.2 mm. The opening 42 of the anti-slip groove 41 has an embedded depth e, where e is preferably 0.2 mm. The embedded depth can limit the rivet hole in the longitudinal direction.

[0038] The curved surface of the arc-shaped mouth can have a sliding effect on the riveted hole when it is pushed into the anti-slip groove 41. The curved surface of the arc-shaped mouth can provide a unique sliding effect for the riveted hole, which helps the riveted 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 curved surface of the arc-shaped mouth provides a smooth guide for the riveted hole, so that the riveted hole can be smoothly pushed along the curved surface. This guiding effect reduces the friction and resistance during the riveting process, making the operation smoother; the setting of the curved surface allows the riveted hole to be appropriately adjusted according to the shape of the curved 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 curved surface usually has a certain lubricity, which can reduce the friction between the riveted hole and the curved surface, further promoting the smooth advancement of the riveted hole.

[0039] In some embodiments, the curved surface can provide a smooth advancement process for the rivet hole, and the operator can advance the rivet hole into the anti-slip groove 41 more quickly, thereby improving the efficiency of the riveting operation; through the sliding action of the curved surface, the rivet 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 curved surface makes the riveting process simpler and more convenient, reducing the labor intensity and 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 rivet. The protrusion 3 is located on the outer wall of the rivet, and a flange extends outward from the outer wall. The formation of this flange allows the rivet to produce a certain deformation during the assembly process, thereby better cooperating with other structures. The flanging structure can increase the contact area between the rivet and the matching components, 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 a key component for enhancing the stability of the riveted joint. It works in conjunction with the flange structure to prevent the riveted joint from loosening during use through a locking mechanism. The anti-loosening element 2 closely mates with the flange structure of the protrusion 3, creating a locking mechanism. Specifically, the shape and size of the anti-loosening element 2 must match the flange structure to ensure smooth insertion and a tight fit during assembly. This ensures that the anti-loosening element 2, through its close fit with the flange structure, effectively prevents the riveted joint from loosening, even in vibration or impact environments.

[0042] In some embodiments, 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 structures, which helps to increase the stability of the structure and the grip of objects, making objects less likely to fall off or slip. The anti-slip teeth 21 include tooth peaks and tooth valleys, 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 teeth 21 is equal to the bending radius of the tooth valley of the anti-slip teeth 21, and the tooth height of any adjacent tooth peaks is equal, enhancing the anti-slip function. The tooth height of the anti-slip teeth 21 is twice the bending radius of the tooth peak. Because the bending radius of the tooth peak of the anti-slip teeth 21 is equal to the bending radius of the tooth valley of the anti-slip teeth 21, the tooth height of any adjacent tooth peaks is equal. This makes the tooth peaks and tooth valleys evenly distributed, which can increase the surface friction coefficient and thus improve 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 The anti-loosening external rivet nut of some embodiments Figure 2A partial enlarged schematic diagram of point A of the anti-slip tooth 21. 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 bending radius of the tooth peak of the anti-slip tooth 21 is h, and h is preferably 0.15mm. The bending radius of the tooth valley of the anti-slip tooth 21 is f, and f is preferably 0.15mm. The setting of the anti-slip tooth 21 is mainly to increase the friction between objects, improve the grip and anti-slip performance of the objects, and further solve the technical problem of the nut slipping during rotation. The application of the setting of the anti-slip tooth 21 in the transmission 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 configuration of the anti-skid teeth 21, the bending radius of the tooth peaks and tooth valleys are key parameters. In order to achieve the anti-skid effect, special attention is usually paid to the shapes and sizes of these two parts. The bending radius of the tooth peaks of the anti-skid teeth 21 is equal to the bending radius of the tooth valleys of the anti-skid teeth 21. This configuration can make the transmission process more balanced, reduce stress concentration, and improve service life; by making the bending radius of the tooth peaks and tooth valleys equal, friction and wear during the transmission process can be reduced, thereby improving transmission efficiency; this configuration can increase the contact area and friction with the mating parts, thereby improving anti-skid performance and maintaining good working conditions under various working conditions; due to the reduction of stress concentration and friction and wear, this configuration has a longer service life and higher reliability.

[0045] Continue to observe Figure 5 In some embodiments, the tooth height of the anti-skid teeth 21 is twice the bending radius of the tooth peak, and the tooth height of the anti-skid teeth 21 is twice the bending radius of the tooth valley. The tooth height of the anti-skid teeth 21 is g, and g is preferably 0.3 mm. In the setting of the anti-skid teeth 21, 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 anti-skid teeth. If the bending radius is too large, it may affect the anti-skid effect of the anti-skid teeth. Therefore, when selecting the bending radius, it is necessary to comprehensively consider the strength and anti-skid effect of the anti-skid teeth.

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

[0047] Figure 6 This is a cross-sectional view of the compression joint of the anti-loosening external rivet nut of some embodiments of the present invention. Figure 6 It can be clearly seen that the plate is pressed onto the plate through the rivet hole to prevent the external rivet nut from loosening, 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: Insert the rivet into the anti-loosening groove 41 of the anti-loosening external rivet nut;

[0050] S3: Use a torque tool to twist the anti-loosening external rivet nut, and 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 partial 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 8This is a schematic diagram of the anti-loosening external rivet nut in some embodiments of the present invention before installation. In some embodiments, the anti-loosening external rivet nut is used between two plates that need to be connected or between two components, 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 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 serve as a bridge between connecting elements to ensure close connection and stable operation between various parts.

[0054] Figure 9 This diagram shows the anti-loosening external rivet nut in some embodiments of the present invention after installation. As can be seen in the figure, because the nut body 1 does not need to bear torque, it occupies very little space. Therefore, after installation, the anti-loosening external rivet nut can save a significant amount of space. This advantage is crucial for many devices or mechanical systems that require high-density installation. For example, in fields such as automotive manufacturing, aerospace, and precision instruments, space is often limited, and the installation of each component requires meticulous planning and precise layout. Using an anti-loosening external rivet nut ensures that more space is freed up for the installation or use of other components. The anti-loosening external rivet nut leaves ample space for installers to work with other components after installation. This feature is crucial for improving work efficiency and reducing work accidents. Installers no longer need to find space to avoid the installed nut, making subsequent operations easier and improving the overall construction schedule. Furthermore, the anti-loosening external rivet nut not only provides space savings but also prevents loosening, a feature essential in many applications requiring 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 costs and resource waste caused by rework can be reduced. By providing better operating space and stable tightening effect, the anti-loosening external rivet nut helps to improve the quality of the entire project 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 upgrade of the equipment. Because the space is effectively utilized and optimized, maintenance personnel can more easily access and inspect the components inside the equipment. In addition, if equipment upgrades or component replacements 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 methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they 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, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of 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 around 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) is formed between the protrusions (3) and the anti-loosening element (2).

2. The anti-loosening external rivet nut according to claim 1, characterized in that: The anti-loosening element (2) comprises a plurality of anti-slip teeth (21) for closely 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 rivet 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 rivet 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 rivet nut according to claim 1 or 2, characterized in that: The outer wall surface of the protrusion (3) extends a convex edge 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 rivet 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 rivet nut according to claim 2, 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 rivet 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 rivet 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. The anti-loosening external rivet nut according to claim 7, characterized in that: The anti-slip groove (41) has an arc-shaped opening on the upper side of the side close to the axis, and the arc-shaped opening has an arc-shaped surface.

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