Patent Publication Number: US-2022213914-A1

Title: Rivet fastener assembly and method of use thereof

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. application Ser. No. 16/243,808, filed on Jan. 9, 2019, and entitled “Rivet Fastener Assemblies,” which itself claims priority to and incorporates by reference U.S. Provisional Application Ser. No. 62/617,654, filed on Jan. 16, 2018, and entitled “Rivet Fastener Assemblies.” 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates generally to fastener assemblies and, more particularly, to fastener assemblies configured to secure one or more components together, such as panels within a vehicle that are secured together during the manufacturing process of the vehicle. 
     2. Description of the Background of the Invention 
     Fastener assemblies may be used in a variety of applications, including automobile manufacturing. For example, during a manufacturing process for a vehicle, various components may be secured together by a fastener or fastener assembly. Particular examples may include an interior frame panel that may be secured to an exterior door panel, or an air bag assembly that may be secured to an interior door panel or glove compartment panel. As another example, a wheel liner may be secured to a vehicle sheet metal or a fender wheel well. Typically, components are secured together using one or more fasteners or fastener assemblies, such as plastic rivet style fasteners.  
     Many known plastic rivet style fasteners are configured to fit into a hole of a particular size. In the instance that a hole is not of a particular size, the component is typically modified to accommodate the fastener or fastener assembly, causing an undue burden during the manufacturing process. Further, many prior art fastener assemblies lose retention strength over time when a load or force is applied to the fastener assemblies or when a load or force is applied to areas adjacent to, or even remote from, the fastener assemblies. Even further, the method or process of fastening components together using a fastener or fastener assembly may always be improved or simplified. 
     A need therefore exists for a rivet fastener assembly that does not require a hole of a component to be modified in order to be used. Further, a need exists for a rivet fastener assembly that is configured to be used with existing trim and panel holes, and which may be used to fasten together components having holes or apertures with variable shapes and sizes. Also, a need exists for a rivet fastener assembly that may be installed without specialized tools and, even further, a need exists for a rivet fastener assembly with the aforementioned characteristics that may be easily installed, or removed, during a manufacturing process. 
     SUMMARY OF THE INVENTION 
     In one aspect, a rivet fastener assembly is configured to securely clamp together one or more components. The rivet fastener assembly includes a pin and a rivet body having a collar and a column extending from the collar. The rivet body further includes a collar stop configured to provide a positive locating feature for the pin once assembled. 
     In related embodiments, a passage is defined through the collar and column, wherein the column includes a first set of legs configured to fold and directly contact the one or more components when folded and a second set of legs configured to fold and reinforce the first set of legs when folded. Further, the first set of legs and the second set of legs may comprise bulges that project radially outward, as well as inner recessed areas. Still further, the pin may comprise a plurality of annular projections and a beveled nose. The pin may also include a protrusion that is proximate a first distal end of the pin, and that is between the annular projections and the beveled nose. The protrusion may be configured to pre-flex at least one leg of the first set of legs or the second set of legs. It is also contemplated that that the rivet body may include a plurality of grooves configured to interlock with the annular projections and that those grooves are proximate to the collar stop. It is further envisioned that the pin may include a ledge configured to engage the collar stop. 
     In another aspect, a rivet fastener assembly is configured to securely clamp together one or more components. The rivet fastener assembly includes a pin and a rivet body having a collar and a column. The collar has an opening and the column extends from the collar and has an interior channel. The opening is contiguous with the interior channel, and a diameter of the opening is smaller than a diameter of the interior channel. 
     In some embodiments, the column may also include a first set of legs with radial gaps therebetween and a second set of legs with radial gaps therebetween. The first set of legs and the second set of legs may also include radially outward extending bulges and inner recessed areas. The pin may also include a longitudinal shaft, a ledge, and a plurality of circumferential rings extending from the ledge. Further, the longitudinal shaft may have a first diameter, and the ledge may have a second diameter that is different from the first diameter. The pin may further include a beveled nose with a lower edge having a third diameter, which may be a diameter different from the first diameter and the second diameter. The pin may also have a convex ring that circumscribes a first edge of the plurality of circumferential rings, and the convex ring may be proximate to the second set of legs. 
     In a further aspect, the present disclosure provides a rivet fastener assembly having a pin and a rivet body. The pin has a longitudinal shaft, a securing section, and a bulbous head. The rivet body has a collar with a first opening and a column. The column includes component-engaging legs, reinforcing legs, an internal passage that extends between the first opening and a second opening, and a locking section proximate to the first opening of the collar. Further, the first opening has a diameter smaller than a diameter of the securing section. 
     In related embodiments, a diameter of the bulbous head may be larger than a diameter of the second opening. The rivet body may further include an annular wall, which may define the first opening. 
     The foregoing and other aspects and advantages of the disclosure will appear from the following description. In the description, reference is made to the accompanying drawings, which form a part hereof, and in which there is shown by way of illustration a preferred configuration of the disclosure. Such configuration does not necessarily represent the full scope of the disclosure, however, and reference is made therefore to the claims herein for interpreting the scope of the disclosure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will be better understood and features, aspects, and advantages other than those set forth above will become apparent when consideration is given to the following detailed description thereof. Such detailed description makes reference to the following drawings. 
         FIG. 1A  is a front, top, and right side isometric view of a fastener assembly that includes a pin and a rivet body, wherein the fastener assembly is shown in an unassembled configuration; 
         FIG. 1B  is a rear, top, and right side isometric view of the fastener assembly of  FIG. 1A ; 
         FIG. 2A  is a cross-sectional view of the pin of  FIGS. 1A and 1B , taken along lines  2 - 2  thereof; 
         FIG. 2B  is a cross-sectional view of the rivet body of  FIGS. 1A and 1B , taken along lines  2 - 2  thereof; 
         FIG. 3  is a front, top, and right side isometric view of the fastener assembly of  FIG. 1  shown in a first, assembled configuration; 
         FIG. 4  is a front elevational view of the fastener assembly of  FIG. 3 ; 
         FIG. 5  is a right side elevational view of the fastener assembly of  FIG. 3 ; 
         FIG. 6  is a cross-sectional view taken along lines  6 - 6  of  FIG. 5 ; 
         FIG. 7  is an enlarged view of a section of  FIG. 6 ; 
         FIG. 8  depicts the fastener assembly of  FIG. 3  in a second, assembled configuration; 
         FIG. 9  depicts the fastener assembly of  FIG. 3  in a third, assembled configuration; 
         FIG. 10  is a cross-sectional view taken along lines  10 - 10  of  FIG. 9 ; 
         FIG. 11  depicts the fastener assembly of  FIG. 3  in a fourth, assembled configuration; 
         FIG. 12  is a cross-sectional view taken along lines  12 - 12  of  FIG. 11 ; 
         FIG. 13  depicts the fastener assembly of  FIG. 3  aligned with an aperture of a first and second component; 
         FIG. 14  depicts the fastener assembly of  FIG. 13  initially mated with the first and second components, wherein portions of the first and second components have been removed for clarity; 
         FIG. 15  depicts the fastener assembly of  FIG. 14  after which the pin has been partially pulled upward, in relation to the rivet body; 
         FIG. 16  depicts the fastener assembly of  FIG. 15  after which the pin has been pulled fully upward, in relation to the rivet body, and segmented; 
         FIG. 17  depicts the fastener assembly of  FIG. 3 , wherein the fastener assembly is used to fasten together a first, second, and third component; 
         FIG. 18  is a bottom plan view of  FIG. 17 ; 
         FIG. 19  is a cross-sectional view taken along lines  19 - 19  of  FIG. 18 ; and 
         FIG. 20  depicts an alternative embodiment of the fastener assembly of  FIG. 3  in cooperation with a first, second, and third component and after the pin has been pulled fully upward, in relation to the rivet body, and segmented. 
     
    
    
     Before the embodiments of the disclosure are explained in detail, it is to be understood that the disclosure is not limited in its application to the details of construction and the arrangement of the components set forth in the following description or illustrated in the drawings. The disclosure is capable of other embodiments and of being practiced or being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. The use of “including” and “comprising” and variations thereof is meant to encompass the items listed thereafter and equivalents thereof as well as additional items and equivalents thereof. 
     DETAILED DESCRIPTION OF THE DRAWINGS 
     Certain embodiments of the present disclosure provide a rivet fastener assembly that does not require a hole of a component to be modified in order to be used. Instead, the rivet fastener assembly is configured to be used with existing trim and panel holes, and may be used with components having a wider range of hole shapes and sizes. Further, the rivet fastener assembly may be installed without specialized tools, and the rivet fastener assembly may be configured to be easily serviced and removed. 
       FIGS. 1A, 1B, 2A and 2B  illustrate a fastener assembly  100 , and components thereof, in an unassembled state and according to the present disclosure. In the illustrated embodiment, the fastener assembly  100  includes a rivet body or grommet  102 , and a pin or rod  104 , which may be inserted within and through the rivet body  102 . For example,  FIGS. 3-6  depict the fastener assembly  100  in a first, assembled configuration and, more particularly, an embodiment of the fastener assembly  100  that includes the pin  104  positioned within and extending through the rivet body  102 . The rivet body  102  and the pin  104  may each be individually formed from a plastic material, such as polyamide (PA), polybutylene terephthalate (PBT), polyoxymethylene (POM). In other embodiments, the rivet body  102  and the pin  104  may be formed from polyethylene terephthalate (PET), high-density polyethylene (HDPE), polyvinyl chloride (PVC), low-density polyethylene (LDPE), and/or polypropylene (PP), for example. 
     With particular reference to  FIG. 2A , the pin  104  may comprise a rounded head  106 , a longitudinal shaft  108 , a ledge  110  adjacent a securing section  112 , a bulbous rim  114 , an intermediate shaft  116 , and a beveled nose  118 . In this embodiment, the rounded head  106  is a hemispherical protuberance proximate a front distal end  120  of the longitudinal shaft  108 . However, in other embodiments, the front distal end  120  of the pin  104  may be a planar, distal surface. 
     The beveled nose  118  extends from a rear distal end  122  of the pin  104 , which is opposite from the front distal end  120 . The beveled nose  118  may also include a circumferential lip  124  that extends from a lower edge or rim  126 , and a rounded head  127  that extends, and angles inward, from the circumferential lip  124 . Further, the lower edge  126  of the beveled nose  118  is generally flat and perpendicular to the axis  2 - 2  (see  FIGS. 1A and 1B ). 
     In particular embodiments, such as that shown in  FIGS. 1A, 1B, 2A, and 2B , the circumferential lip  124  has a diameter that is greater than a diameter of the longitudinal shaft  108 , the securing section  112 , and/or the rounded head  106  of the pin  104 . In further embodiments, the diameter of the circumferential lip  124  is greater than a diameter of any other portion of the pin  104 . 
     Still referencing  FIG. 2A , the longitudinal shaft  108  may have a diameter D 1 , the ledge  110  may have a diameter D 2 , the bulbous rim  114  may have a diameter D 3 , and the circumferential lip  124  may have a diameter D 4 . In this particular embodiment, the diameter D 4  is greater than the diameter D 1 , the diameter D 2 , and the diameter D 3 . Further, in this embodiment, the diameter 
     D 3  is greater than the diameter D 1  and the diameter D 2 , and the diameter D 2  is greater than the diameter Dl. 
     Turning to  FIG. 2B , the rivet body  102  may include an annular collar  128  and a receiving column  130 . In preferred embodiments, the receiving column  130  may extend from a rear surface  132  of the collar  128  and may be coaxially aligned with the annular collar  128 . Further, in the present embodiment, the collar  128  includes a generally annular configuration, i.e., a circular outer geometry with an opening  134  therethrough. However, other outer geometries are contemplated, e.g., a square, rectangle, oval, or any other shape. The rear surface  132  of the collar  128  is generally flat and perpendicular to the axis  2 - 2  (see  FIGS. 1A and 1B ), and a sidewall  136  extends between the rear surface  132  and a beveled surface  138  that is generally linear. In other embodiments, the beveled surface  138  may take other linear forms, be curvilinear, or a combination of both. 
     Still referencing  FIG. 2B , a groove  140  may be proximate to the opening  134  and may be defined by one or more walls. For example, in the present embodiment, the groove  140  may be defined by an exterior wall  142  and an interior wall  144 , which together form a crevasse therebetween. In other embodiments, the groove  140  may take numerous other forms as may be contemplated by those skilled in the art. Non-limiting examples may include a groove having an exterior wall, an interior wall, and a concave surface extending between the exterior wall and the interior wall, or a groove having a parabolic cross-section. 
     The rivet body  102  and, more particularly, the collar  128  thereof, may also include one or more features that allow a user to quickly and easily service, e.g., remove, the fastener assembly  100  from one or more components. For example, as best shown in  FIGS. 3 and 4 , the rivet body  102  may include one or more slots  148  and one or more tabs  150  positioned within the slots  148 , wherein the slots  148  may define the tabs  150  therebetween. 
     In general, the slots  148  may be configured to receive operative portions of a tool, e.g., a needle nose pliers, so that the tabs  150  may be removed from the fastener assembly  100 , if desired. And, as will be further discussed herein, removal of the tabs  150  may relieve a retention pressure from the pin  104 , which may cause the pin  104  to freely move within, through, and from the rivet body  102 . As such, the fastener assembly  100  may be disassembled and removed from one or more components. In this embodiment, the tabs  150  are two U or C-shaped components positioned opposite one another on a first and second side of the collar  128 , and the slots  148  are vacant U or C-shaped areas that surround the tabs  150 . Optionally, the slots  148  and the tabs  150  may be sized and shaped different from what is shown. In other embodiments, the rivet body  102  may have one or more slots  148  and one or more tabs  150  similar to those disclosed in PCT/US2017/041636, which claims priority to U.S. Provisional Application No. 62/374,129, both of which are hereby incorporated by reference in their entireties. 
     Turning to  FIGS. 1-4 and 6 , the rivet body  102  may also include an annular wall  170  that extends radially inward a predetermined distance from the interior wall  144  of the collar  128  (see  FIG. 2B ). The annular wall  170  may also generally define the opening  134 . In these embodiments, the annular wall  170  may also include an interior surface or stop  172  (see  FIGS. 2B and 6 ). In preferred embodiments, the opening  134  is centered within the annular wall  170  and is concentric with the axis  2 - 2  (see  FIGS. 1A and 1B ). Further, the receiving column  130  may also include an interior channel  174  that is contiguous, or in communication with, the opening  134  (see  FIG. 2B ). More particularly, the interior channel  174  may extend between the opening  134  and a second opening  176 , and may be concentrically arranged about the axis  2 - 2  (see  FIGS. 1A and 1B ). In a preferred embodiment, the opening  134 , the interior channel  174 , and the second opening  176  are all concentrically arranged, and extend about, the axis  2 - 2 . 
     As will be further discussed herein, the annular wall  170  may function as an inner collar stop and may be configured to provide a positive locating feature for the pin  104 . More particularly, when a force is applied to the pin  104 , such as a pulling force F shown in  FIG. 6 , the pin  104  may retreat or be urged in a forward direction until the ledge  110  of the pin  104  contacts the interior surface  172  of the collar stop or annular wall  170 . For instance, the opening  134  may have a diameter less than a diameter of the interior channel  174  and, thereby, stop forward movement of the pin  104  when desired. 
     In particular embodiments, such as that shown in  FIGS. 1A, 1B, 2A, and 2B , the interior channel  174  has a diameter defined by the second opening  176  and a diameter that is greater than a diameter of the first opening  134 . With particular reference to  FIG. 2B , the first opening  134  may have a diameter D 5  and the second opening  176  (and/or the interior channel  174 ) may have a diameter D 6 . Further, in this embodiment, the diameter D 6  may be greater than the diameter D 5 . 
     In some embodiments, a diameter D 6  of the interior channel  174  is between 1 and 5 times larger than a diameter D 5  of the opening  134 , or between 1 and 2 times larger than a diameter D 5  of the opening  134 , or between 1 and 1.5 times larger than a diameter D 5  of the opening  134 , or between 1.2 and 1.4 times larger than a diameter D 5  of the opening  134 . 
     Further, as discussed herein with reference to  FIG. 2A , the longitudinal shaft  108  may have a diameter D 1 , the ledge  110  may have a diameter D 2 , the bulbous rim  114  may have a diameter D 3 , and the circumferential lip  124  may have a diameter D 4 . In particular embodiments, a diameter D 5  of the first opening  134  may be greater than a diameter D 1  of the longitudinal shaft  108 ; a diameter D 6  of the second opening  176  (and/or the interior channel  174 ) may be greater than a diameter D 2  of the ledge  110  and/or a diameter D 3  of the bulbous rim  114 ; a diameter D 4  of the circumferential lip  124  may be greater than a diameter D 6  of the second opening; and a diameter D 2  of the ledge  110 , and/or a diameter D 3  of the bulbous rim  114 , may be greater than a diameter D 5  of the first opening  134 . 
     Turning back to  FIG. 2B , in this particular embodiment, the interior surface  172  is a planar or flat surface. However, in some embodiments, the interior surface  172  may also include an alternative stop feature on the interior surface  172 , such as a ramped feature, a ledge, a clasp, a ridge, or the like that engages or contacts the ledge  110 . As will become more apparent upon further discussion herein, the interaction between the ledge  110  of the pin  104  and the interior wall  172  of the collar  128  may control the position of the pin  104  relative to the rivet body  102  and, in particular, may define a stop position for the pin  104 . More particularly, the collar stop or annular wall  170  provides an interference that stops or inhibits further forward translational movement of the pin  104  through the rivet body  102 , even if a force (e.g., further pulling force in the direction of the pulling force F shown in  FIG. 6 ) is applied to the pin  104 . 
     As noted herein, the pin  104  may also include the securing section  112 , as well as the bulbous rim  114 . In particular embodiments, the securing section  112  may include one or more retention features configured to securely couple to reciprocal mating features within the rivet body  102 . For example, in the present embodiment shown in  FIGS. 1-7 , the securing section  112  of the pin  104  is a plurality of annular or circumferential rings, projections, threads, studs, barbs, or ridges  178  that may engage, threadably engage, lock, or enter into an interference engagement with internal threads or grooves  180  within the receiving column  130 , as will be further discussed herein (e.g., see  FIGS. 10 and 12 ). The internal grooves  180  may be proximate a front end of the receiving column  130  and may be adjacent to (or immediately adjacent to) the annular wall  170  or opening  134 . Further, in this embodiment, the threads or annular projections  178  angle rearwardly or toward the rear distal end  122  of the pin  104 . In further embodiments, the securing section  112  of the pin  104  may be configured to engage an interior portion of the receiving column  130  using other connections, such as an interference or press fit, a tongue or groove connection, a rib and slot connection, or any other configuration contemplated by one of ordinary skill in the art. 
     With particular reference to  FIGS. 1-3, 5, and 6 , the receiving column  130  may also include a plurality of legs, such as a first set of legs  182  with radial gaps  184  therebetween and a second set of legs  186  with radial gaps  188  therebetween. As will be discussed in further detail herein, the first set of legs  182  may be component-engaging legs that overlay the second set of legs  186 , which may be reinforcing legs that support the first set of legs  182 . In particular, the first set of legs  182  may interact with or contact one or more components (once assembled) and the second set of legs  184  may be configured to fold, abut against, or reinforce the first set of legs  182  (once folded), thereby creating a strong and robust fastening assembly and connection. For example, as will also be further discussed herein, the fastener assembly  100  may be configured to attach to and clamp together multiple panels. 
     In one embodiment, the first set of legs  182  may include one or more flexible, linear beams  190  (in an unassembled state) that are separated by the radial gaps  184  and the second set of legs  186  may include one or more flexible, linear beams  192  (in an unassembled state) that are separated by the radial gaps  188 . In a particular embodiment, the first set of legs  182  may include two flexible, linear beams (in an unassembled state) that are separated by radial gaps and the second set of legs  186  may include two flexible, linear beams (in an unassembled state) that are separated by radial gaps. Further, in the embodiment shown in  FIGS. 1-6 , the first set of legs  182  includes four flexible, linear beams  190  (in an unassembled state) that are separated by four radial gaps  184 , and the second set of legs  186  includes four flexible, linear beams  192  (in an unassembled state) that are separated by four radial gaps  188 . In other embodiments, the first set of legs  182  and the second set of legs  186  may have any number of flexible beams that may be contemplated by those skilled in the art. 
     Further, in this particular embodiment, the first set of legs  182  are longer than the second set of legs  186 . Put differently, in the preferred embodiment shown in  FIGS. 1-6 , the second set of legs  186  are shorter than the first set of legs  182 , which thereby provide a stiffer, more robust reinforcing support when folded that is less susceptible to bending, as compared to longer legs. Therefore, when folded, the second set of legs  186  may provide a stiff and robust support for the first set of legs  182 . In a preferred embodiment, the first set of legs  182  are at least 1.25 times longer than the second set of legs  186 , or at least 1.5 times longer than the second set of legs  186 , or at least 2 times longer than the second set of legs  186 . In other embodiments, the first set of legs  182  may be approximately the same length as the second set of legs  186 , or the second set of legs  186  may be longer than the first set of legs  182 . In even further embodiments, the first set of legs  182  may have legs (or flexible linear beams  190 ) of varying length and the second set of legs  186  may have legs (or flexible linear beams  192 ) of varying length. For instance, in such embodiments, the first set of legs  182  may have legs of a predetermined length and the second set of legs  184  may be longer or shorter than the predetermined length. 
     Further still, referencing  FIGS. 1-6 , positioned between the first set of legs  182  and the second set of legs  186  is an intermediate annular rim  194 , and below the second set of legs  186  is a lower annular rim  196  proximate a lower exterior edge  198  that may define the second opening  176 . 
     It should be understood that the terms first and second, as used herein, are interchangeable. For example, the first set of legs  182  may be considered a second set of legs, while the second set of legs  186  may be considered a first set of legs. 
     Turning back to  FIGS. 1-3, 5, and 6 , the first set of legs  182  may each, individually, include a flexible bridge or intermediate section  220  having one or more bulges  222  (see  FIG. 2B ), and/or one or more cut-out sections or notches  224  (see  FIG. 2B ) that are coextensive with the radial gaps  184 . The second set of legs  186  may also include a flexible bridge or intermediate section  226  with one or more bulges  228  (see  FIG. 2B ), and/or one or more notches  230  (see  FIG. 2B ) that are coextensive with the radial gaps  188 . In particular embodiments, the flexible intermediate sections  220 ,  226  are arched, outwardly bowing, convex, or curved wall segments that extend outwardly from the internal passage or channel  174  of the rivet body  102 . The intermediate sections  220 ,  226  may extend across an entire external circumference of the rivet body  102  on the first set of legs  182  and the second set of legs  186 , individually. Alternatively, the intermediate sections  220 ,  226  may only extend partially across the first set of legs  182  and/or the second set of legs  186 , respectively. 
     The flexible intermediate sections  220 ,  226  of the first set of legs  182  and the second set of legs  186  allow the legs or flexible beams  190 ,  192  to flex outwardly during operational use, as will be further discussed herein. More particularly, when a force (e.g., a pulling force F, as shown in  FIG. 6 ) is applied to the pin  104 , the flexible intermediate sections  220  bias the first set of legs  182  and the flexible intermediate sections  226  bias the second set of legs  186  to allow the force to be directed outwardly and away from an axis of the assembly and may cause the legs to fold in an intended direction. The intermediate sections  220 ,  226  also reduce a force required to collapse the legs of the rivet body  102 . As such, the pin  104  may fully travel through the rivet body  102  so that the ledge  110  may contact the interior surface  172 , and thereby control a break point and an assembly of the fastener assembly, without undesired friction or resistance. 
     As best shown in  FIGS. 1A, 1B, 2A, 6, and 7 , the pin  104  includes a bulbous rim  114 , which in this embodiment is a radial or circumferential protrusion (e.g., an arcuate bulge) with a convex exterior surface. The bulbous rim  114  may be proximate the securing section  112 , and/or between the securing section  112  and the beveled nose  118  (or the rear distal end  122 ). Further, in the particular embodiment shown in  FIG. 7 , the bulbous rim  114  is proximate a rear side of the second set of legs  186  and, as a result, applies an outward force that biases the second set of legs  186  slightly outward in the first assembled state. As such, once the fastener assembly  100  is an assembled state, the bulbous rim  114  may cause the first set of legs  182  and/or the second set of legs  186  to be pre-flexed, as the bulbous rim  114  exerts or applies an outwardly directed force to the second set of legs  186 . Further, due to the particular location of the bulbous rim  114 , less force is required to flex the second set of legs  186 . In other embodiments, the pin  104  may include a bulbous rim  114  between the ledge  110  and the rounded head  106  of the pin  104 , or adjacent a front or rear side of the first set of legs  182 , to thereby apply an outward force to the first set of legs  182  in a first assembled state. Alternatively, the bulbous rim  114  may be at a location on the pin  104  so that, once the pin  104  is inserted through the rivet body  102 , the bulbous rim  114  is proximate the intermediate annular rim  194 . In further embodiments, the pin  104  may include one or more bulbous regions or rims  114 . In essence, the bulbous rim  114  may be positioned at any of one or more locations along the pin  104  that may be contemplated or desired to pre-flex one or more components or areas along the column  130 . 
     During assembly of the fastener assembly  100 , the rounded head  106  of the pin  104  may be axially aligned with the second opening  176  (see  FIGS. 1A and 1B ), and urged into and through the second opening  176 . The pin  104  may then be further inserted into and urged through the receiving column  130  of the rivet body  102  so that the rounded head  106  of the pin  104  passes through the opening  134  of the collar  128 . The pin  104  may continue to move through the rivet body  102  until the lower edge  126  of the beveled nose  118  of the pin comes into contact with, is disposed adjacent to, or is flush with the lower exterior edge  198  of the rivet body  102  (see  FIG. 6 ). Once the lower edge  126  of the beveled nose  118  contacts the lower exterior edge  198  of the rivet body  102 , further movement of the pin  104  through the rivet body  102  is halted and the fastener assembly  100  is in a first, assembled state, as shown in  FIGS. 3-6 . 
     With particular reference to  FIGS. 3-6 and 8-12 , the fastener assembly  100  may then transition between a first assembled state (see  FIGS. 3-6 ), a second assembled state (see  FIG. 8 ), a third assembled state (see  FIGS. 9 and 10 ), and a fourth assembled state (see  FIGS. 11 and 12 ), as will be discussed below. More particularly, once the fastener assembly  100  is in the first assembled state, as shown in  FIGS. 3-6 , a pulling force F (see  FIG. 6 ), may be applied to the longitudinal shaft  108  of the pin  104 . And, because the circumferential lip  124  of the pin  104  has a diameter D 4  that is greater than a diameter D 6  of the second opening  176 , pulling the pin  104  in this manner may cause the first set of legs  182 , or the second set of legs  186 , to fold, outwardly flatten, or collapse. Put differently, by pulling the pin  104  in this manner, the beveled nose  118  forces the receiving column  130  upward, thereby causing the first set of legs  182  and/or the second set of legs  186  to collapse. 
     In particular embodiments, the flexible bridge or intermediate sections  220  of the first set of legs  182  are more flexible (or less stiff) than the flexible bridge or intermediate sections  226  of the second set of legs  186  and, therefore, the first set of legs  182  collapse or flatten first, or before the second set of legs  186  collapse or flatten. Alternatively, in other embodiments, the flexible bridge or intermediate sections  226  of the second set of legs  186  are more flexible (or less stiff) than the flexible bridge or intermediate sections  220  of the first set of legs  182  and, therefore, the second set of legs  186  collapse or flatten first, or before the first set of legs  182  collapse or flatten. In even further embodiments, the flexible bridge or intermediate sections  220  of the first set of legs  182  have the same flexibility or stiffness as the flexible bridge or intermediate sections  226  of the second set of legs  186  and, therefore, the first set of legs  182  and the second set of legs  186  collapse simultaneously. 
     However, in the particular embodiment shown in  FIGS. 3-12 , the pin  104  may be continuously pulled using a force F until the first set of legs  182  fold or flatten, as shown in  FIG. 8 , at which point the fastener assembly  100  is in the second, assembled state. In other words, the fastener assembly  100  may be in the second, assembled state once one of the first set of legs  182  or the second set of legs  186  are flattened or extend outwardly. 
     With particular reference to  FIGS. 9 and 10 , a user may continue to pull the pin  104  of the fastener assembly  100  until the ledge  110  of the pin  104  contacts the interior surface  172  of the annular wall  170  (see  FIG. 10 ). As such, in these embodiments, a location of the ledge  110  on the pin  104  may control the extent or length the pin  104  may be pulled through the rivet body  102  and, as a result, the extent to which the first set of legs  182  and the second set of legs  186  may collapse or fold. More particularly, the stop or interior surface  172  functions as an inner collar stop and may be configured to provide a positive locating feature for the pin  104 . As such, the interior surface  172  may prevent overextension of the pin  104  through the rivet body  102 , and may prevent the first set of legs  182  and/or the second set of legs  186  from folding or bending beyond a desired position. 
     In some embodiments, the pin  104  may be constructed so that the ledge  110  thereof is proximate a desired location along the pin  104  that prevents the first set of legs  182  and/or the second set of legs  186  from folding or bending beyond a desired position. For example, as one skilled in the art would appreciate, the closer the ledge  110  is to the rounded head  106 , or the front distal end  120 , of the pin  104 , the sooner the ledge  110  will contact the interior surface  172  and the sooner the first set of legs  182  and the second set of legs  186  will stop folding. Alternatively, if the ledge  110  is closer to the beveled nose  118 , or the rear distal end  122 , of the pin  104 , the pin  104  may continue to be pulled for a longer period of time and, as a result, the first set of legs  182  and/or the second set of legs  186  may continue to fold for a longer period of time. In a preferred embodiment, the ledge  110  is proximate a location along the pin  104  so that the ledge  110  contacts the stop or interior surface  172  contemporaneously, simultaneously, or at the same time as when the first set of legs  182  and the second set of legs  186  completely flatten. In other words, in this preferred embodiment, when the ledge  110  contacts the interior surface  172 , the first set of legs  182  and the second set of legs  186  are completely flattened. 
     However, in alternative embodiments, the ledge  110  is proximate a location along the pin  104  so that the first set of legs  182  and/or the second set of legs  186  only partially bend. For example, in the embodiment shown in  FIG. 20 , the second set of legs  186  are V-shaped or may be characterized as having a 20 to 50 degree bend. In further embodiments, the ledge  110  is proximate a location along the pin  104  so that when the ledge contacts the stop or interior surface  172 , the first set of legs  182  and/or the second set of legs have a 10 to 170 degree bend, or a 10 to 90 degree bend, or a 10 to 40 degree bend. 
     As noted above, the fastener assembly  100  is in the third assembled state once the ledge  110  contacts the stop or interior surface  172  and/or when both the first set of legs  182  and the second set of legs  186  are completely flattened or folded. As a note, in the embodiment where the flexible bridge or intermediate sections  220  of the first set of legs  182  have the same flexibility as the flexible bridge or intermediate sections  226  of the second set of legs  186 , the fastener assembly  100  would simply transition from the first assembled state to the third assembled state, as the first set of legs  182  and the second set of legs  186  collapse simultaneously and, as such, would never enter a second assembled state as described herein. 
     In the present embodiment, the notches  224  and the notches  230  also function to control or ease the collapse of the first set of legs  182  and the second set of legs  186 . For example, the notches  224  may redirect a force applied to the intermediate sections  220  toward a rigid portion of the first set of legs  182 , e.g., a portion of the first set of legs  182  that is not flexible. 
     As shown in  FIGS. 9 and 10 , a length L 1  of the longitudinal shaft  108  of the pin  104  may extend from the opening  134  of the collar  128  in the third assembled state. This portion or length L 1  of the pin  104 , or longitudinal shaft  108  thereof, may be removed, such as via breaking or cutting. More particularly, the pin  104  may be broken with a sufficient force during assembly at a location near the annular wall  170  and the ledge  110 . As such, once broken, the pin  104  does not extend outward from the opening  134 . 
     Once removed, the fastener assembly  100  may then be in the fourth assembled state, as shown in  FIGS. 11 and 12 . As further shown in  FIG. 12 , the securing section  112  of the pin  104  may be in engagement with the internal threads or grooves  180  of the rivet body  102 , which secures the pin  104  within the rivet body  102 . In particular, the engagement between the securing section  112  of the pin  104  and the internal threads or grooves  180  of the rivet body  102  prevents axial or lateral movement of the pin  104  and the rivet body  102  relative to one another. As noted herein, in other embodiments, the securing section  112  of the pin  104  may be configured to engage an interior portion of the receiving column  130  using other connections, such as an interference or press fit, a tongue or groove connection, a rib and slot connection, or any other configuration contemplated by one of ordinary skill in the art. 
     Further, although the fastener assembly  100  of the present embodiment transitions between assembled states by application of a pulling force F, it is envisioned that the pin  104  may cooperate with the rivet body  102  in an alternative fashion to collapse or flatten the first set of legs  182  and the second set of legs  186 . For example, it is envisioned that the fastener assembly  100  may transition between the assembled states by rotational movement of either the rivet body  102  or the pin  104 , or by application of a pushing force. For example, the rivet body  102  and the pin  104  may include threaded sections or radial protrusions that travel along cooperative engagement features that allow for longitudinal translation of the lower annular rim  196  toward the collar  128 , and, thereby, flattening of the first set of legs  182  and the second set of legs  186 . 
       FIGS. 13-16  illustrate a method of using the fastener assembly  100  and, in particular, a process in which the fastener assembly  100  fastens or secures a first component  250 , e.g., a first panel, together with a second component  252 , e.g., a second panel. 
     First, as shown in  FIGS. 13 and 14 , a user may align the assembled fastener assembly  100  with one or more holes or apertures, e.g., a first hole  254  of the first component  250  and a second hole (not shown) of the second component  252  (see  FIG. 13 ), and then insert the assembled fastener assembly  100  in a direction of arrow  256  through the holes or apertures (see  FIG. 14 ). The fastener assembly  100  may be urged into and through the hole  254  until the rear surface  132  of the collar  128  abuts against an outer surface  258  of the first component  250 , which surrounds the hole  254 . More particularly, the fastener assembly  100  may be positioned through the holes of the first and second components  250 ,  252  so that the rim or rear surface  132  is proximate and in contact with an outer surface  258  of the first component  250 . 
     As will be further discussed herein, a size or shape of the holes or apertures of the components  250 ,  252  may vary and the fastener assembly  100  may be used to fasten together components having holes of varying sizes. However, in particular embodiments, the collar  128  of the rivet body  100  must have a diameter greater than the hole  254  of the first component  250 , and the first set of legs  182  must extend outward a distance or have a span  260  (see  FIGS. 17 and 19 ) when folded that is larger than a diameter of a hole of a lower component to be secured, e.g., the second component  252  in the present embodiment. 
     As shown in  FIG. 15 , after insertion of the fastener assembly  100  through the first and second holes of the first and second components  250 ,  252  a user may apply a pulling force F to the pin  104 . Upon application of the pulling force F to the pin  104 , the beveled nose  118  (and, as a result, the lower annular rim  196  of the rivet body  102 ) moves longitudinally toward the collar  128 , as discussed herein. Continued movement of the lower annular rim  196  causes the flexible intermediate section  220  of the first set of legs  182  to flex outwardly, as shown in  FIG. 15 , and even further continued movement of the lower annular rim  196  may cause the flexible intermediate section  226  of the second set of legs  186  to flex outwardly, as shown in  FIG. 16 . As discussed herein, the second set of legs  186  may flex outwardly so that the second set of legs  186  are proximate to the first set of legs  182  and provide support therefor. As such, as also discussed herein, the second set of legs  186  may include a stiffer or more robust material than the first set of legs  182 . 
     A user may apply a pulling force F to the pin  104  until a top side of the first set of legs  182  contacts a rear side  264  of the second component  252 , and may continue to apply a pulling force F to the pin  104  until the ledge  110  of the pin  104  contacts the interior surface  172  of the collar stop  170 . After the ledge  110  engages the interior surface  172 , further movement of the pin  104  through the rivet body  102  is halted and the portion of the pin  104  extending above the collar  128  may be removed. 
     Turning to  FIGS. 17-19 , a fastener assembly  100  is shown in cooperation with a first component  280 , a second component  282 , and a third component  284 , wherein the fastener assembly  100  fastens or secures the first component  280 , the second component  282 , and the third component  284  together. The fastener assembly  100  shown in  FIGS. 17-19  is shown in the fourth assembled state, with the ledge  110  in contact with the interior surface  172  of the collar stop  170  and the securing section  112  in cooperation with the grooves  180  (see  FIG. 19 ). Further, in this particular embodiment, the first set of legs  182  and the second set of legs  186  are fully folded. With particular reference to  FIG. 19 , the first component  280  and the third component  284  have holes or apertures  286 ,  288 , respectively, with a first diameter and the second component  282  has a hole or aperture  290  with a second diameter that is different than the first diameter of the apertures  286 ,  288 . As such,  FIG. 19  is an example wherein the fastener assembly  100  may be used to fasten together components having holes of varying sizes. 
     After clamping the first component  280 , the second component  282 , and the third component  284  together, a load  292  may be exerted onto the first component  280 . Subsequently, the load  292  may be transferred to the first set of legs  182  and, thereby, cause the first set of legs to bend onto locations  294  of the second set of legs  186 . That is, if a load is applied to the first component  280 , the first set of legs  182  may bend into or onto a location along the second set of legs  186  (e.g., location  294 ) upon exertion of the load  292 . The second set of legs  186  may also change the bending fulcrums of the first set of legs  182  by distributing the load  292  along a folded distance or span  296  of the second set of legs  186  (see  FIGS. 17 and 19 ). 
     As discussed above, in some embodiments, the ledge  110  of the pin  104  may be proximate a location along the pin  104  so that the second set of legs  186  (or the first set of legs  182 ) are V-shaped, or have an angled bend. As an illustrative example,  FIG. 20  depicts a fastener assembly  100  that secures a first component  298 , a second component  300 , and a third component  302  together, wherein the second set of legs  186  have an approximately 25 to 45 degree bend. 
     If desired, the fastener assembly  100  may also include one or more features that allow for quick and easy servicing. For example, as previously discussed herein, the fastener assembly  100  may include one or more slots  148  and one or more tabs  150  positioned within the slots  148 . In these embodiments, the slots  148  may be tool-engagement channels formed through the beveled surface  138  of the collar  128  and are configured to receive operative portions of a tool (e.g., a needle nose pliers). During operational use, a user may insert an operative portion of a tool into the slots  148  and remove the tabs  150 . After the tabs  150  are removed, a retention pressure may be released from the pin  104 . For example, the tabs  150  may be coupled to structures, such as a threaded interface (e.g., the internal threads or grooves  180 ) that securely couple the pin  104  to the rivet body  102 , and removal of the tabs  150  may increase a diameter D 6  of the interior channel  174  and may decouple the internal threads or grooves  180  and the securing section  112  of the pin  104 . As such, the pin  104  may be pushed in and the first and second set of legs  182 ,  186  may unfold, allowing the fastener assembly  100  to be removed from the first, second, and third component  298 ,  300 ,  302 . 
     As previously noted herein, slots and tabs that may be used in connection with the fastener assembly  100  are disclosed in in PCT/US2017/041636. 
     While various spatial and directional terms, such as top, bottom, lower, mid, lateral, horizontal, vertical, front, rear, and the like may be used to describe embodiments of the present disclosure, it is understood that such terms are merely used with respect to the orientations shown in the drawings. The orientations may be inverted, rotated, or otherwise changed, such that an upper portion is a lower portion, and vice versa, horizontal becomes vertical, and the like. 
     Variations and modifications of the foregoing are within the scope of the present disclosure. It is understood that the embodiments disclosed and defined herein extend to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present disclosure. The embodiments described herein explain the best modes known for practicing the disclosure and will enable others skilled in the art to utilize the disclosure. The claims are to be construed to include alternative embodiments to the extent permitted by the prior art. 
     As noted previously, it will be appreciated by those skilled in the art that while the invention has been described above in connection with particular embodiments and examples, the invention is not necessarily so limited, and that numerous other embodiments, examples, uses, modifications and departures from the embodiments, examples and uses are intended to be encompassed by the claims attached hereto. The entire disclosure of each patent and publication cited herein is incorporated by reference, as if each such patent or publication were individually incorporated by reference herein. 
     INDUSTRIAL APPLICABILITY 
     Numerous modifications to the present invention will be apparent to those skilled in the art in view of the foregoing description. Accordingly, this description is to be construed as illustrative only and is presented for the purpose of enabling those skilled in the art to make and use the invention and to teach the best mode of carrying out same. The exclusive rights to all modifications which come within the scope of the appended claims are reserved.