Fastening structure

Abstract

The utility model provides a fastening structure. The fastening structure comprises a main body part and at least one fin set, each fin set comprises a plurality of fins, the fins surround the main body part and are arranged at intervals, and the fins are used for being matched with the inner wall of a mounting hole in an abutting mode when the fastening structure is located in the mounting hole of a first mounting component. And the second mounting part is fixedly connected with the first mounting part. According to the fastening structure provided by the invention, the plurality of fins are arranged to surround the main body part, so that when the fastening structure is accommodated in the mounting hole of the first mounting component, the fins abut against the inner wall of the mounting hole, and the fastening structure can be prevented from being separated from the mounting hole; and the fastening structure is prevented from rotating in the circumferential direction of the mounting hole, so that the stability of the fastening structure in the mounting hole is improved.

Description

Technical Field

[0001] The present application relates to the field of fastening structures, and in particular to a fastening structure. Background Art

[0002] Currently, fasteners are usually fixed in the mounting holes of the mounting materials by gluing, but the gluing method is not strong, and the fasteners are easy to loosen and fall out of the mounting holes. Utility Model Content

[0003] In order to solve the above technical problems, the present application provides a fastening structure that can increase the resistance to escaping from the installation component and improve the stability within the installation component.

[0004] The present application provides a fastening structure, which includes a main body and at least one fin group. The fin group includes a plurality of fins, which surround the main body and are arranged at intervals. The plurality of fins are used to abut and cooperate with the inner wall of the mounting hole when the fastening structure is located in the mounting hole of the first mounting component, and is fastened to the first mounting component.

[0005] The fastening structure provided in the present application is configured with the multiple fins surrounding the main body so that when the fastening structure is received in the mounting hole of the first mounting component, the fins abut against the inner wall of the mounting hole, thereby preventing the fastening structure from escaping from the mounting hole and preventing the fastening structure from rotating circumferentially along the mounting hole, thereby improving the stability of the fastening structure in the mounting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0007] Figure 1 A schematic structural diagram of a fastening structure provided in one embodiment of the present application at a certain viewing angle.

[0008] Figure 2 for Figure 1 A schematic structural diagram of the fastening structure shown in another viewing angle.

[0009] Figure 3 It is a schematic diagram of the decomposed structure of the fastening structure at a certain viewing angle.

[0010] Figure 4 It is a schematic diagram of the decomposed structure of the fastening structure from another perspective.

[0011] Figure 5 is a side view of the fastening structure.

[0012] Figure 6 for Figure 5 A is an enlarged view of the middle image.

[0013] Figure 7 It is a schematic diagram of pushing the fastening structure into the mounting hole of the first mounting component.

[0014] Figure 8 It is a schematic diagram of the projection of two adjacent fin groups and two adjacent annular portions along the axial direction of the main body in one example.

[0015] Fig. 9 It is a schematic diagram of the projection of two adjacent fin groups and two adjacent annular portions along the axial direction of the main body in another example.

[0016] Fig.10 is a top view of the fastening structure.

[0017] Description of reference numerals:

[0018] 100-fastening structure; 10-main body; 20-fin group; 21-fin; 11-first fastening end; 12-second fastening end; 200-first mounting component; 210-mounting hole; 211-first end; 212-second end; 210a-opening; 30-annular portion; 21a-first projection; 21b-second projection; 30a-third projection; 30b-fourth projection; 60-gasket; 40-first limit member; 50-second limit member; 13-connecting hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] In the description of the present application, the terms "first", "second", "third", "fourth", etc. are used to distinguish different objects rather than to describe a specific order. The terms "upper", "lower", "inner", "outer", etc. indicate directions or positional relationships, which are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.

[0021] In the description of this application, unless otherwise clearly specified and limited, the term "connection" 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 direct connection, an indirect connection through an intermediate medium, or the internal connection of two components; it can be a communication connection; it can be an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] See also Figures 1 to 4 , Figure 1 This is a schematic structural diagram of a fastening structure 100 provided in one embodiment of the present application at a certain viewing angle. Figure 2 for Figure 1 The structural schematic diagram of the fastening structure 100 shown in another viewing angle is as follows: Figure 3 is a schematic diagram of the decomposed structure of the fastening structure 100 at a certain viewing angle, Figure 4 FIG. 1 is a schematic diagram of the decomposed structure of the fastening structure 100 from another perspective. Figures 1 to 4 As shown, the fastening structure 100 includes a main body 10 and at least one fin group 20, wherein the fin group 20 includes a plurality of fins 21, and the plurality of fins 21 surround the main body 10 and are arranged at intervals. The plurality of fins 21 are used to abut against and cooperate with the inner wall of the mounting hole when the fastening structure 100 is located in the mounting hole of the first mounting component, and is fastened to the first mounting component.

[0023] The fastening structure 100 provided in the embodiment of the present application, by arranging the multiple fins 21 to surround the main body 10, so that when the fastening structure 100 is received in the mounting hole of the first mounting component, the fins 21 abut against the inner wall of the mounting hole, thereby preventing the fastening structure 100 from escaping from the mounting hole and preventing the fastening structure 100 from rotating along the circumference of the mounting hole, thereby improving the stability of the fastening structure 100 in the mounting hole.

[0024] The first mounting component may be any component to be mounted and fixed, including but not limited to stone components, plastic components, and wooden components. In some embodiments, the inner wall of the mounting hole may be provided with a plurality of grooves, and the plurality of grooves correspond to the plurality of fins 21 of the fin group 20, and are used for inserting the plurality of fins 21 one by one. In some other embodiments, the mounting hole may not be provided with the grooves.

[0025] In some embodiments, the circumferential direction of the plurality of fins 21 of the fin group 20 may be parallel to the circumferential direction of the main body 10 (eg, Figure 1 and Figure 2 As shown), the multiple fins 21 of the fin group 20 are arranged at intervals along the circumference of the main body 10.

[0026] In other embodiments, the circumferential direction of the multiple fins 21 of the fin group 20 may have an angle with the circumferential direction of the main body 10 , that is, the circumferential direction of the fin group 20 is inclined relative to the circumferential direction of the main body 10 .

[0027] In some other embodiments, the plurality of fins 21 of the fin assembly 20 may spirally surround the outer peripheral wall of the main body 10 .

[0028] In some embodiments, the main body 10 is columnar, and an angle is formed between the extension direction of the fin 21 and the axial direction of the main body 10, and the angle is greater than 0° and less than or equal to 90°. By setting an angle between the extension direction of the fin 21 and the main body 10, the fin 21 can be extended outward from the main body 10, which can increase the contact area between the fin 21 and the inner wall of the mounting hole, increase the friction force, and thus enhance the fastening effect of the fastening structure 100 and the mounting hole.

[0029] In some embodiments, Figure 3 and Figure 4 As shown, the main body 10 is cylindrical, that is, the projection of the main body 10 along the axial direction of the main body 10 is circular. Wherein, when the main body 10 is cylindrical, the mounting hole is also a circular hole. Obviously, in some embodiments, the main body 10 may also be a columnar structure such as a square column or a polygonal column, that is, the projection of the main body 10 along the axial direction of the main body 10 is a square or polygonal shape, and correspondingly, the mounting hole may also be a square hole, a polygonal hole, etc.

[0030] See also Figures 3 to 6 , Figure 5 is a side view of the fastening structure 100, Figure 6 for Figure 5 In some embodiments, as Figures 3 to 5 As shown, the main body 10 includes a first fastening end 11 and a second fastening end 12 opposite to each other, and the angle between the extending direction of the fin 21 and the axial direction of the main body 10 (as shown in FIG. Figure 6 The angle α) shown is the inclination angle of the fin 21 toward the second fastening end 12 .

[0031] In some embodiments, the angle between the extension direction of the fin 21 and the axial direction of the main body 10 is greater than or equal to 40° and less than 90°, so that the fin 21 is inclined relative to the main body 10 and the inclination angle is large, which is conducive to the fin 21 clamping the inner wall of the mounting hole 210.

[0032] In some embodiments, the angle between the extension direction of the fin 21 and the axial direction of the main body 10 is 53°. In other embodiments, the angle may also be other angle values.

[0033] See also Figure 7 , is a schematic diagram of pushing the fastening structure 100 into the mounting hole 210 of the first mounting component 200. Figure 7 As shown, when the fastening structure 100 is installed in the mounting hole 210 of the first mounting component 200, along the direction from the first fastening end 11 to the second fastening end 12 and parallel to the axial direction of the main body 10 (such as Figure 7 The fastening structure 100 is pushed into the mounting hole 210 (as shown in the Z direction).

[0034] In some embodiments, the inner diameter of the mounting hole 210 (eg Figure 7 R1 in the figure) may be equal to the outer diameter of the fin group 20 (as shown in Figure 7 In other embodiments, the inner diameter of the mounting hole 210 may be slightly smaller than the outer diameter of the fin assembly 20 to increase the holding force between the fin 21 and the inner wall of the mounting hole 210. The outer diameter of the fin assembly 20 refers to the outer diameter of the projection of the fin assembly 20 along the axial direction of the main body 10.

[0035] Since the fin 21 is inclined toward the second fastening end 12, by pushing the fastening structure 100 into the mounting hole 210 along the direction from the first fastening end 11 to the second fastening end 12, the resistance of the fastening structure 100 when entering the mounting hole 210 can be reduced, thereby facilitating quick installation of the fastening structure 100.

[0036] like Figure 3 and Figure 4 As shown, the fin 21 includes a first end 211 and a second end 212 opposite to each other, and the first end 211 is closer to the main body 10 than the second end 212. After the fastening structure 100 is pushed into the mounting hole 210 in the direction from the first fastening end 11 to the second fastening end 12, the first end 211 of the fin 21 is farther away from the opening 210a of the mounting hole 210 than the second end 212, thereby providing a greater resistance to the fastening structure 100 coming out of the mounting hole 210 than when the fastening structure 100 is pushed in the opposite direction, i.e., from the second fastening end 12 to the first fastening end 11, making it more difficult for the fastening structure 100 to come out.

[0037] The first end 211 and the second end 212 are fixed relative to the main body 10. The distance between the first ends 211 of the plurality of fins 21 of the same fin group 20 along the axial direction of the main body 10 is within a preset distance range.

[0038] The fin 21 may have a certain elasticity. When the fastening structure 100 is located in the mounting hole 210 and is subjected to various external forces (such as vibration, tension, etc.), due to the elastic characteristics of the fin 21, the fin 21 can undergo a certain degree of deformation to absorb and disperse the energy generated by the force, and can also maintain a close and stable contact with the mounting hole 210, thereby effectively preventing the fastening structure 100 from loosening or even falling out. In addition, the elastic design of the fin 21 can also improve the fault tolerance of the fastening structure 100. Even if there are slight errors in the installation process or the size of the mounting hole 210 is slightly deviated, the fin 21 can adapt to these changes through appropriate deformation, ensuring that the fastening structure 100 can be firmly installed in the mounting hole 210.

[0039] In some embodiments, after the fastening structure 100 is pushed into the mounting hole 210, the fastening structure 100 can be pulled outward appropriately, so that the fin 21 is bent and deformed, and the inclination angle of the fin 21 toward the second fastening end 12 becomes larger, so that the fin 21 can be more tightly pressed against the inner wall of the mounting hole 210, and the fin 21 is more tightly and firmly stuck on the inner wall of the mounting hole 210. In addition, since the multiple fins 21 of the fin group 20 are arranged at intervals, compared with the multiple fins 21 connected as one, each fin 21 has a certain degree of independence, so that each fin 21 is easier to bend and deform and press against the inner wall of the mounting hole 210.

[0040] In some embodiments, after the fastening structure 100 is pulled outward, glue may be injected along the inner wall of the mounting hole 210 so that the outer wall of the fin group 20 and the main body 10 are bonded to the inner wall of the mounting hole 210 to further fix the fastening structure 100 and the mounting hole 210. In other embodiments, it is not necessary to inject glue, and the abutment force between the fin group 20 and the inner wall of the mounting hole 210 can satisfy the fastening force requirement of the first mounting component 200.

[0041] The inclination angles of the multiple fins 21 of the same fin group 20 may be the same or different. In some embodiments, the inclination angles of the multiple fins 21 of the same fin group 20 may first gradually increase and then gradually decrease along the circumferential direction, and the lengths of the multiple fins 21 may first gradually decrease and then gradually increase along the circumferential direction, or the inclination angles may first gradually decrease and then gradually increase along the circumferential direction, and the lengths of the multiple fins 21 may first gradually increase and then gradually decrease along the circumferential direction. In addition, the projection lengths of the multiple fins 21 of the same fin group 20 along the axial direction of the main body 10 are the same, so that when the cross-section of the mounting hole 210 is circular, the multiple fins 21 can all abut against the mounting hole 210. The length of the fin 21 refers to the size of the fin 21 along its extension direction, and the length of the projection refers to the distance between the opposite ends of the projection along the radial direction of the main body 10.

[0042] The shape of the fin 21 can be roughly square (such as Figure 1 As shown), it can also be other shapes, such as trapezoidal, semicircular, etc. When the fin 21 is substantially trapezoidal, the lower base of the trapezoid is connected to the main body 10, and the upper base of the trapezoid is farther away from the main body 10 than the lower base.

[0043] In some embodiments, Figure 3 and Figure 4 As shown, the fastening structure 100 further includes an annular portion 30, which is sleeved on the main body 10, and is provided with at least one fin group 20. The plurality of fins 21 of the fin group 20 are arranged at intervals on the outer periphery of the annular portion 30, and the fins 21 extend outward from the outer periphery of the annular portion 30. The fins 21 and the annular portion 30 can be connected by an arc transition to avoid stress concentration.

[0044] The plurality of fins 21 of the fin assembly 20 may be integrally formed with the annular portion 30 , and may also be fixedly connected by riveting, bonding, snapping, screwing, or other connection methods.

[0045] The multiple fins 21 of the fin group 20 can be evenly distributed on the outer periphery of the annular portion 30, that is, the spacing between the multiple fins 21 is equal, so that the contact positions of the multiple fins 21 and the mounting hole 210 are evenly distributed along the radial direction of the mounting hole 210, and the mounting hole 210 is subjected to a relatively balanced force, which is conducive to preventing the fastening structure 100 from escaping from the mounting hole 210 and avoiding stress concentration in the mounting hole 210. In addition, the fin group 20 is subjected to a relatively balanced force, thereby reducing the risk of deformation and damage of the fin group 20 due to uneven force.

[0046] In some other embodiments, the intervals between the plurality of fins 21 may also be different.

[0047] By connecting the multiple fins 21 of the fin group 20 to the outer periphery of the annular portion 30 and sleeved the annular portion 30 on the main body 10, the multiple fins 21 can be very conveniently arranged on the outer periphery of the main body 10, and by arranging the fins 21 to be connected to the outer periphery of the annular portion 30, the manufacturing process of the fins 21 can be simplified.

[0048] In some other embodiments, the fin group 20 can be directly disposed on the outer peripheral wall of the main body 10, and the multiple fins 21 of each fin group 20 surround the main body 10 and are arranged at intervals. The multiple fins 21 can be integrally formed with the main body 10, or fixedly connected by riveting, bonding, clamping, screwing, etc.

[0049] In some embodiments, Figure 1 and Figure 2 As shown, the fastening structure 100 includes at least two fin groups 20, and the at least two fin groups 20 are arranged at intervals along the axial direction of the main body 10. By providing at least two fin groups 20, the friction between the fastening structure 100 and the inner wall of the mounting hole 210 can be increased, thereby further improving the stability of the fastening structure 100 in the mounting hole 210.

[0050] In some embodiments, the at least two fin groups 20 are arranged at equal intervals along the axial direction of the main body 10, so that the mounting hole 210 is subjected to uniform force in the axial direction. In some other embodiments, the intervals between two adjacent fin groups 20 in the at least two fin groups 20 may be unequal.

[0051] The number of fins 21 in each fin group 20 may be the same or different. The inclination angles of the fins 21 in two adjacent fin groups 20 may be the same or different. The circumferential directions of the fins 21 in two adjacent fin groups 20 may be parallel to each other or may not be parallel to each other.

[0052] In some embodiments, at least some of the fins 21 of two adjacent fin groups 20 overlap in the axial direction of the main body 10. That is, in two adjacent fin groups 20, the projection of at least one fin 21 of one fin group 20 overlaps with the projection of one fin 21 of the other fin group 20. In some embodiments, the fins 21 of two adjacent fin groups 20 correspond one to one, and a fin 21 of each fin group 20 overlaps with the projection of the corresponding fin 21 in the adjacent fin group 20 in the axial direction of the main body 10. In other embodiments, some of the fins 21 of any fin group 20 overlap with the projection of the corresponding fin 21 in the adjacent fin group 20 in the axial direction of the main body 10.

[0053] For example, see Figure 8, is a schematic diagram of the projection of two adjacent fin groups 20 and two adjacent annular portions 30 along the axial direction of the main body 10 in an example. Figure 8 As shown, in the two adjacent fin groups 20, the first projection 21a of each fin 21 of one of the fin groups 20 along the axial direction of the main body 10 overlaps with the second projection 21b of the corresponding fin 21 in the adjacent fin group 20 along the axial direction of the main body 10. The third projection 30a of the annular portion 30 connected to one of the fin groups 20 along the axial direction of the main body 10 may overlap with the fourth projection 30b of the annular portion 30 connected to the other fin group 20 along the axial direction of the main body 10 (as shown in FIG. Figure 8 as shown), or they may not overlap.

[0054] By arranging that at least some of the fins 21 of two adjacent fin groups 20 overlap in the axial projection of the main body 10, that is, at least some of the fins 21 of the adjacent fin groups 20 are aligned in the axial direction, the overall rigidity of the fastening structure 100 can be improved, making it more resistant to deformation and distortion during installation. In addition, since some of the fins 21 are aligned in the axial direction, they can form a stronger mutual support, thereby improving the connection stability between the fastening structure 100 and the mounting hole 210.

[0055] In some embodiments, the projections of at least some of the fins 21 of two adjacent fin groups 20 in the axial direction of the main body 10 do not overlap. That is, in two adjacent fin groups 20, the projection of at least one fin 21 among the multiple fins 21 of one fin group 20 does not overlap with the projections of the multiple fins 21 of the other fin group 20. In some embodiments, the projection of each fin 21 of one of the fin groups 20 does not overlap with the projections of the multiple fins 21 of the other fin group 20; or, the projections of some of the fins 21 of one of the fin groups 20 do not overlap with the projections of the multiple fins 21 of the other fin group 20.

[0056] For example, see Fig. 9 , is a schematic diagram of projections of two adjacent fin groups 20 and two adjacent annular portions 30 along the axial direction of the main body 10 in another example. Fig. 9 As shown, in two adjacent fin groups 20, the first projection 21a of the multiple fins 21 of one fin group 20 along the axial direction of the main body 10 does not overlap with the second projection 21b of the multiple fins 21 of the other fin group 20 along the axial direction of the main body 10. The third projection 30a of the annular portion 30 connected to one fin group 20 along the axial direction of the main body 10 can overlap with the fourth projection 30b of the annular portion 30 connected to the other fin group 20 along the axial direction of the main body 10 (as shown in FIG. Fig. 9 as shown), or they may not overlap.

[0057] By arranging that the projections of at least part of the fins 21 of two adjacent fin groups 20 in the axial direction of the main body 10 do not overlap, that is, at least part of the fins 21 are staggered in the axial direction, the contact positions of the fins 21 of the at least two fin groups 20 and the mounting holes 210 can be staggered, thereby effectively dispersing the stress generated during the fastening process, reducing the stress concentration phenomenon in the mounting holes 210, and enhancing the durability of the fastened connection.

[0058] In some embodiments, Figures 3 to 5 As shown, the fastening structure 100 includes a plurality of annular portions 30. The plurality of annular portions 30 are sleeved on the main body 10 at intervals along the axial direction of the main body 10, and at least one fin group 20 is disposed on each annular portion 30. The fins 21 of the fin group 20 are fixedly connected to the main body 10 through the annular portions 30.

[0059] Among them, the fins 21 arranged on two adjacent annular parts 30 are spaced apart, so that the contact positions of the fins 21 on the two adjacent annular parts 30 and the mounting holes 210 are spaced apart, thereby increasing the contact area and avoiding mutual interference between the fins 21 on the two adjacent annular parts 30 and the mounting holes 210 when they abut against each other, thereby affecting the abutment effect.

[0060] In some embodiments, Figure 3 and Figure 4 As shown, one fin set 20 is provided on each annular portion 30. In other embodiments, at least two fin sets 20 may be provided on each annular portion 30.

[0061] The aforementioned preset distance range may be the thickness of the annular portion 30 , so that the first ends 211 of the plurality of fins 21 of the same fin group 20 are all connected to the annular portion 30 , and the thickness of the annular portion 30 is the dimension of the annular portion 30 along a direction parallel to the main body 10 .

[0062] In some other embodiments, at least one through hole group is formed on the outer peripheral wall of the main body 10, each through hole group includes a plurality of through holes surrounding the main body 10 and arranged at intervals, and the plurality of fins 21 of the fin group 20 are inserted into the through holes of the through hole group one by one, so that the fins 21 are fixedly connected to the main body 10. In some embodiments, the main body 10 is provided with at least two through hole groups, and the at least two through hole groups are spaced apart along the axial direction of the main body 10, and each through hole group is used for inserting the fins 21 of a fin group 20.

[0063] In some embodiments, Figures 3 to 5As shown, the fastening structure 100 further includes at least one gasket 60, which is sleeved on the main body 10 and located between two adjacent annular portions 30, and the gasket 60 abuts against the two adjacent annular portions 30 at opposite ends of the main body 10 in the axial direction.

[0064] By arranging the gasket 60 between two adjacent annular portions 30, the spacing between two adjacent fin groups 20 can be increased, thereby increasing the distance between the contact positions of the two adjacent fin groups 20 and the mounting hole 210, thereby forming a wider abutment area and a longer contact path. The expansion of the abutment area and the contact path can effectively disperse the stress and impact force generated during the fastening process, thereby improving the stability and reliability of the fastening structure 100 in the mounting hole 210.

[0065] In some embodiments, the outer diameter of the gasket 60 is smaller than or equal to the outer diameter of the annular portion 30, so that the deformation of the fin 21 is not restricted by the gasket 60. In other embodiments, the outer diameter of the gasket 60 may be larger than the outer diameter of the annular portion 30.

[0066] In some embodiments, Figures 1 to 5 As shown, the fastening structure 100 further includes a first stopper 40 and a second stopper 50, wherein the first stopper 40 surrounds the outer circumference of the main body 10 and is fixed relative to the main body 10, and the second stopper 50 is sleeved on the main body 10 and is fixed relative to the main body 10. The annular portion 30 is sleeved on the main body 10 and is located between the first stopper 40 and the second stopper 50, and the annular portion 30 abuts against the first stopper 40 and the second stopper 50, so that the annular portion 30 and the fin 21 are circumferentially fixed to the main body 10, thereby preventing the annular portion 30 and the fin 21 from rotating or loosening, thereby preventing the stability of the fastening structure 100 in the mounting hole 210 from being affected.

[0067] The first stopper 40 can be integrally formed with the main body 10, or can be fixedly connected by riveting, bonding, clamping, screwing, etc. The second stopper 50 can be fixed relative to the main body 10 by interference fit with the main body 10, or after the annular portion 30 is sleeved on the main body 10, the second stopper 50 can be fixedly connected to the main body 10 by riveting, bonding, clamping, screwing, etc.

[0068] In some embodiments, the second stopper 50 can be made of plastic, including but not limited to nylon. The use of plastic to make the second stopper 50 facilitates interference fit between the second stopper 50 and the main body 10. There is no gap between the second stopper 50 and the main body 10, so that the second stopper 50 will not rotate or move relative to the main body 10, thereby being able to press the multiple annular parts 30 tightly.

[0069] In other embodiments, the annular portion 30 can be fixedly connected to the main body 10 by interference fit with the main body 10, or can be fixedly connected to the main body 10 by riveting, bonding, snapping, screwing, etc., so that the fin 21 is fixed relative to the main body 10.

[0070] In some embodiments, the outer diameter of the second stopper 50 may be equal to the inner diameter of the mounting hole 210, so that the second stopper 50 may abut against the inner wall of the mounting hole 210, thereby further improving the connection stability between the fastening structure 100 and the mounting hole 210. In other embodiments, the outer diameter of the second stopper 50 may be slightly smaller than the inner diameter of the mounting hole 210.

[0071] See also Figure 7 and Fig.10 , Fig.10 is a top view of the fastening structure 100. In some embodiments, Figure 7 and Fig.10 As shown, the outer diameter of the second limiting member 50 (eg Figure 7 R3 shown in the figure) is less than or equal to the outer diameter of the fin group 20 (such as Figure 7 The outer diameter of the fin group 20 refers to the outer diameter of the fin group 20 projected along the axial direction of the main body 10.

[0072] By setting the outer diameter of the second limiting member 50 to be smaller than or equal to the outer diameter of the fin assembly 20 , it is advantageous for the fin 21 to abut against the mounting hole 210 .

[0073] In some embodiments, the outer diameter of the fin group 20 is 12.55 mm, the outer diameter of the second stopper 50 is 12 mm, and the inner diameter of the mounting hole 210 is 12 mm. In other embodiments, the outer diameter of the fin group 20, the outer diameter of the second stopper 50, and the inner diameter of the mounting hole 210 can be set according to actual needs.

[0074] In some embodiments, Figures 1 to 4As shown, the main body 10 is provided with a connecting hole 13, and the connecting hole 13 extends in the direction from the first fastening end 11 to the second fastening end 12. The inner wall of the connecting hole 13 is provided with a connecting portion for fixedly connecting with the second mounting component, thereby fixing the first mounting component 200 and the second mounting component together.

[0075] In some embodiments, the connecting portion may be an internal thread provided on the inner wall of the connecting hole 13, and the second mounting component is provided with a bolt. The fastening structure 100 and the second mounting component are locked by threading the bolt with the main body 10, thereby achieving a fixed connection between the first mounting component and the second mounting component.

[0076] In other embodiments, the connection portion may be a groove or a convex portion provided on the inner wall of the connection hole 13, and is used to cooperate with the convex portion or the groove on the second mounting component, so that the fastening structure 100 is fixedly connected to the second mounting component, thereby achieving a fixed connection between the first mounting component and the second mounting component. For example, the groove may be a card slot, and the convex portion may be a buckle.

[0077] The connecting hole 13 penetrates the main body 10 along the axial direction of the main body 10 , or the connecting hole 13 is a blind hole, that is, the connecting hole 13 extends from the second fastening end 12 to a position between the second fastening end 12 and the first fastening end 11 .

[0078] The second installation component can be any component to be installed and fixed, including but not limited to stone components and plastic components.

[0079] In some embodiments, a portion of the fin 21 away from the main body 10 is provided with a plurality of protrusions. By providing the plurality of protrusions, the contact area between the fin 21 and the inner wall of the mounting hole 210 can be increased, thereby increasing the abutting force between the fin 21 and the mounting hole 210. In some embodiments, the second end 212 is provided with a plurality of the protrusions. When the fastening structure 100 is located in the mounting hole 210, the second end 212 abuts against the inner wall of the mounting hole 210. The plurality of protrusions on the second end 212 can increase the contact area between the fin 21 and the inner wall of the mounting hole 210.

[0080] In some embodiments, the fins 21 of two adjacent fin groups 20 correspond one to one, and a reinforcement portion (not shown in the figure) is provided between the fin 21 of one fin group 20 and the corresponding fin 21 in the other fin group 20, and the extension direction of the reinforcement portion is parallel to the axial direction of the main body 10, and the reinforcement portion includes two opposite ends along its extension direction, one end of which is connected to a fin 21 in the fin group 20, and the other end is connected to the corresponding fin 21 in the adjacent fin group 20.

[0081] The reinforcing portion can enhance the overall rigidity of the at least two fin groups 20 , and when subjected to external force, the reinforcing portion can share and transfer the load, thereby preventing the fins 21 from being severely deformed or even damaged.

[0082] The above is an implementation method of the embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the embodiment of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A fastening structure, characterized in that: The fastening structure comprises: A main body, wherein the main body is columnar; At least one fin group, the fin group includes a plurality of fins, the plurality of fins surround the main body and are arranged at intervals, the plurality of fins are used to abut and cooperate with the inner wall of the mounting hole when the fastening structure is located in the mounting hole of the first mounting component, and are fastened to the first mounting component, an extension direction of the fin has an angle with the axial direction of the main body, and the angle between the extension direction of the fin and the axial direction of the main body is greater than 0° and less than or equal to 90°.

2. The fastening structure according to claim 1, characterized in that: The main body includes a first fastening end and a second fastening end relative to each other. When the fastening structure is installed in the mounting hole, the fastening structure is pushed into the mounting hole along a direction from the first fastening end to the second fastening end and parallel to the axial direction of the main body. The angle between the extension direction of the fin and the axial direction of the main body is the inclination angle of the fin toward the second fastening end.

3. The fastening structure according to claim 2, characterized in that: An angle between an extending direction of the fin and an axial direction of the main body is greater than or equal to 40° and less than 90°.

4. The fastening structure according to claim 1, characterized in that: The fastening structure comprises at least two fin groups, and the at least two fin groups are arranged at intervals along the axial direction of the main body, and projections of at least part of the fins of two adjacent fin groups in the axial direction of the main body overlap.

5. The fastening structure according to claim 1, characterized in that: The fastening structure further comprises an annular portion, wherein the annular portion is sleeved on the main body portion, and the plurality of fins of the fin group are spaced apart on the outer periphery of the annular portion, and the fins extend outward from the outer periphery of the annular portion.

6. The fastening structure according to claim 5, characterized in that: The fastening structure comprises a plurality of annular parts, which are sleeved on the main body at intervals along the axial direction of the main body, each annular part is provided with at least one fin group, wherein the fins provided on two adjacent annular parts are spaced apart.

7. The fastening structure according to claim 6, characterized in that: The fastening structure further comprises at least one gasket, which is sleeved on the main body and located between two adjacent annular portions, and opposite ends of the gasket along the axial direction of the main body are respectively in contact with the two adjacent annular portions.

8. The fastening structure according to claim 5, characterized in that: The fastening structure also includes a first limit member and a second limit member, the first limit member surrounds the outer peripheral side of the main body and is fixed relative to the main body, the second limit member is sleeved on the main body and is fixed relative to the main body, the annular portion is located between the first limit member and the second limit member, and the annular portion is abutted against the first limit member and the second limit member.

9. The fastening structure according to claim 8, characterized in that: An outer diameter of a projection of the fin group along the axial direction of the main body is greater than or equal to an inner diameter of the mounting hole and greater than or equal to an outer diameter of the second limiting member.

10. The fastening structure according to claim 4, characterized in that: The at least two fin groups are arranged at equal intervals along the axial direction of the main body.

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