Fastener with preset securing member

Abstract

A bushing includes an upper collar with a lower sheath and an annular shoulder intermediate the collar and sheath. The collar has a plurality of spaced apart notches and the sheath has a plurality of spaced apart slits that may be circumferentially aligned with the notches. The sheath has a plurality of spaced apart ribs projecting outward circumferentially offset from the slit for assisting in maintaining the sheath within a hole in a fastener with the annular shoulder against the fastener. A securing member with an elongate shank extending from a head with a distal portion is maintained in the longitudinal opening in an upright position aligned with the hole. As the fastener is driven longitudinally through the opening and hole, force from the fastener causes the bushing to break away and yields direct contact between the securing member head against the top surface of the fastener.

Claims

1. A break-away fastening unit for assembling a building structure, comprising: a fastener with a top surface and a bottom surface, defining an attachment hole; a securing member having an elongate shank extending from a head to a distal end configured for driving into a building member; and a bushing with a lower sheath positioned within the attachment hole and an annular shoulder positioned on the top surface side of the fastener, the sheath and shoulder combining to define a longitudinal passage for receiving and maintaining at least a distal portion of the securing member shank with the securing member in a substantially upright position and the bushing pressed between the fastener and securing member, wherein the bushing is configured such that driving the securing member shank distally through the bushing breaks away the bushing from the unit, thereby yielding direct contact between the securing member against the fastener.

2. The break-away fastening unit of claim 1, wherein the bushing comprises an upper collar extending from the annular shoulder above the fastener.

3. The break-away fastening unit of claim 1, wherein the annular shoulder of the bushing abuts the top surface of the fastener.

4. The break-away fastening unit of claim 3, comprising a plurality of ribs projecting radially from an outer surface in the lower sheath spaced from one another about the sheath, the ribs maintained tightly against an edge defining the fastener hole.

5. The break-away fastening unit of claim 4, comprising a plurality of slits in the lower sheath spaced from one another about the lower sheath, wherein segments of the lower sheath between adjacent slits flare outward underneath the fastener bottom surface via force from the securing member.

6. The break-away fastening unit of claim 1, wherein said lower sheath has an outer contour and said outer contour transitions inwardly away from said shoulder.

7. The break-away fastening unit of claim 1, wherein said lower sheath has an outer contour and said longitudinal passage has an inner contour, said outer and inner contours transition inwardly away from said shoulder.

8. The break-away fastening unit of claim 1, wherein an inner surface of said lower sheath includes a plurality of spaced apart nubs for maintaining a tight fit with said securing member.

9. The break-away fastening unit of claim 8, wherein a plurality of spaced apart ribs project radially from an outer surface of the lower sheath and each nub is circumferentially aligned with a rib.

10. The break-away fastening unit of claim 2, wherein said upper collar includes a plurality of circumferentially spaced slits, said shoulder includes a plurality of circumferentially spaced notches, and said collar includes a plurality of circumferentially spaced indentations, said slits, notches, and indentations cooperating to break away the bushing into a plurality of distinct sections by an outward force from said securing member being driven into the fastener.

11. A break-away fastening unit for assembling a building structure comprising: a fastener having a top surface and a bottom surface, defining an attachment hole; a securing member having an elongate shank configured for driving into a building member; and a bushing including a lower sheath positioned within the attachment hole and having a plurality of circumferentially spaced slits, an annular shoulder positioned on the top surface side of the fastener and having a plurality of circumferentially spaced notches, the sheath and shoulder combining to define a longitudinal passage for receiving and maintaining at least a distal portion of the securing member shank with the securing member in a substantially upright position and the bushing pressed between the fastener and securing member, wherein the bushing is configured such that when the securing member shank is driven distally through the bushing, said slits, and notches cooperate to break away the bushing into a plurality of distinct sections by an outward force from said securing member, thereby yielding direct contact between the securing member against the fastener.

12. The break-away fastening unit of claim 11, wherein said annular shoulder includes a plurality of indentations and at least one of said slits in the lower sheath is circumferentially aligned with at least one of said indentations.

13. The break-away fastening unit of claim 11, comprising an upper collar extending above the fastener from the annular shoulder, said annular shoulder having a plurality of circumferentially spaced indentations and the upper collar having a plurality of notches, wherein at least one of said indentations is circumferentially aligned with said notches in the upper collar.

14. The break-away fastening unit of claim 13, wherein each of said notches in the upper shoulder and the slits in the lower sheath are circumferentially aligned with one another.

15. A break-away fastening unit for assembling a building structure, comprising: a fastener with a top surface and a bottom surface, defining an attachment hole; a securing member having an elongate shank extending from a head to a distal end; and a bushing with a lower sheath positioned within the attachment hole, the lower sheath having a plurality of circumferentially spaced slits dividing the lower sheath into segments, the lower sheath defining a longitudinal passage for receiving and maintaining at least a distal portion of the securing member shank, wherein the bushing is configured such that driving the securing member shank distally through the bushing breaks away the bushing, thereby yielding direct contact between the securing member against the fastener.

16. The break-away fastening unit of claim 15, wherein the bushing includes an annular shoulder and an upper collar extending above the annular shoulder and fastener.

17. The break-away fastening unit of claim 15, wherein the top surface of the fastener abuts the annular shoulder of the bushing.

18. The break-away fastening unit of claim 17, wherein the lower sheath includes a plurality of ribs projecting radially from an outer surface, said ribs being spaced from one another about the lower sheath, and said ribs are tightly maintained against an edge defining the fastener hole.

19. The break-away fastening unit of claim 18, wherein the segments of the lower sheath are defined between adjacent slits and flare outward underneath the fastener bottom surface via force from the securing member.

20. The break-away fastening unit of claim 15, wherein the fastener and the bushing are formed of different materials.

21. The break-away fastening unit of claim 1, wherein the fastener and the bushing are formed of different materials.

22. The break-away fastening unit of claim 11, wherein the fastener and the bushing are formed of different materials.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a top perspective view of an embodiment of a collated series of fasteners with preset securing members;

(2) FIG. 2 is a side elevation view of the series of fasteners of FIG. 1;

(3) FIG. 3 is a top perspective view of a single fastener with preset securing member and intermediate bushing;

(4) FIG. 4 is a side elevation view of a securing member and intermediate bushing with the fastener removed;

(5) FIG. 5 is a side elevation view of a securing member and intermediate bushing with the fastener removed at a different angle from FIG. 4;

(6) FIG. 6 shows an exemplary installation of a fastener and securing member after the bushing has broken away during installation;

(7) FIG. 7A is a top perspective view of the bushing of FIGS. 1-5;

(8) FIG. 7B is a section view of the bushing of FIG. 7A;

(9) FIG. 8A is a top elevation view of the bushing of FIG. 7A;

(10) FIG. 8B is a side elevation view of the bushing of FIG. 7A;

(11) FIG. 9 is a side elevation view of a collated series of fasteners with preset securing members held in place with a different embodiment of the bushing;

(12) FIG. 10 is a top perspective view of the additional embodiment of the bushing from FIG. 9;

(13) FIG. 11 is a side elevation view of the bushing of FIG. 10;

(14) FIG. 12 is a bottom elevation view of the bushing of FIG. 10; and

(15) FIG. 13 is a bottom perspective view of the bushing of FIG. 10.

DETAILED DESCRIPTION

(16) Among the benefits and improvements disclosed herein, other objects and advantages of the disclosed embodiments will become apparent from the following wherein like numerals represent like parts throughout the several figures. Detailed embodiments of a bushing and fastener with preset securing members are disclosed; however, it is to be understood that the disclosed embodiments are merely illustrative of the invention that may be embodied in various forms. In addition, each of the examples given in connection with the various embodiments of the invention which are intended to be illustrative, and not restrictive.

(17) Throughout the specification and claims, the following terms take the meanings explicitly associated herein, unless the context clearly dictates otherwise. The phrases In some embodiments and in some embodiments as used herein do not necessarily refer to the same embodiment(s), though it may. The phrases in another embodiment and in some other embodiments as used herein do not necessarily refer to a different embodiment, although it may. Thus, as described below, various embodiments may be readily combined, without departing from the scope or spirit of the invention.

(18) In addition, as used herein, the term or is an inclusive or operator, and is equivalent to the term and/or, unless the context clearly dictates otherwise. The term based on is not exclusive and allows for being based on additional factors not described, unless the context clearly dictates otherwise. In addition, throughout the specification, the meaning of a, an, and the include plural references. The meaning of in includes in and on.

(19) Further, the terms substantial, substantially, similar, similarly, analogous, analogously, approximate, approximately, and any combination thereof mean that differences between compared features or characteristics is less than 25% of the respective values/magnitudes in which the compared features or characteristics are measured and/or defined.

(20) With reference to the drawings wherein like numerals represent like parts throughout the several figures, embodiments of a bushing 16 and a decking fastener 12 with a preset securing member 14 and intermediate bushing 16, optionally in a collated series 10 are disclosed. As will be evident from the below description, the intermediate sleeve or bushing 16 allows an effective preset relationship without risking damage to the securing member threads or fastener opening surfaces or edge. The bushing 16 is typically manufactured from a plastic material and configured to break away from the unit during installation, leaving the desired direct metal-on-metal direct attachment between the fastener 12 and securing member 14. An illustrative depiction of an installation of the fastener 12 via securing member 14 after the bushing 16 has broken away is shown in FIG. 6.

(21) FIGS. 1 and 2 depict a collated series 10 of fasteners 12, similar to those described in co-owned pending U.S. patent application Ser. No. 14/434,268. As shown, the fasteners 12 each have a threaded securing member 14 preset within a hole extending through the top of the fastener, maintained in its upright position via an intermediate bushing 16.

(22) FIG. 3 depicts a single securing member 14 that is preset in fastener 12 with bushing 16. Prior to installation, the shape of the bushing 16 (as depicted in FIGS. 7A-8B) is configured to accommodate the shape of the tip of the securing member 14 to properly locate and support the tip and/or distal portion of the securing member 14. As the securing member 14 is inserted or driven further through the fastener hole and the bushing 16, portions of the bushing 16 expand and/or flare outward until the bushing 16 ultimately breaks away, yielding a secure metal-on-metal connection between the securing member 14 and the fastener 12.

(23) Referring to FIG. 3, showing a singular preset assembly 11, the exemplary fastener 12 has two opposing downwardly extending legs 30. The fastener 12 extends from a generally planar top surface 32 to a generally planar bottom surface 34 with a hole between the top and bottom surfaces. In the depicted embodiment, a plurality of teeth 36 extend downwardly at the front end of the body. Additional embodiments of the fastener for use with the disclosed bushing and preset fastener system exist that feature downwardly projecting prongs at the rear end. A nose 38 protrudes from the fastener 12 between the top and bottom surfaces 32, 34. The nose 38 allows for temporary mating of adjacent fasteners within the collated series 10 depicted in FIGS. 1 and 2. It is important to note that the particular configuration of the fastener is non-limiting to the inventive aspects disclosed herein, which can be employed in numerous different multi-part fastening systems.

(24) FIGS. 4 and 5 depict a securing member 14 within a bushing 16 with the fastener 12 removed to allow features of the bushing 16 and the relationship between the bushing 16 and fastener 14 to be appreciated in greater detail. As shown, the bushing includes an upper collar 18 and a lower sheath 20 separated with an outwardly extending annular shoulder or flange 22 intermediate the collar and sheath. When installed in the preset assembly or individual fastener, as depicted in FIGS. 1-3, the annular shoulder 22 abuts the top surface of the fastener to assist in maintaining the securing member 14 in its upright configuration aligned with the hole in the fastener 12.

(25) The lower sheath 20 includes a plurality of slits 24 circumferentially spaced from one another, dividing the sheath into segments 21. In the depicted exemplary embodiment, the lower sheath 20 has three slits 24 equally spaced approximately 120 apart from each other. Thus, the lower sheath 20 can be considered to comprise three substantially identical segments 21, each segment being defined between successive slits. Notably, the number of slits and their relative positioning around the lower sheath described herein as preferred are non-limiting to the bushing 16 and the collated or individual preset assemblies, 10 and 11. In practice, the slits 24 allow the separate segments 21 of the lower sheath 20 (between adjacent slits) to separate (flare) radially outward underneath the surface of the fastener 12 when the securing member 14 is driven partially through the hole with the annular shoulder 22 abutting the top surface of the fastener and providing mechanical leverage. As shown in the Figures, a plurality of ribs 25 project radially from the outer surface of the lower sheath 20. In the depicted embodiment, three ribs 25 are equidistantly spaced radially offset between the respective slits 24, such that each sheath segment 21 includes a rib 25. The ribs 25 assist in creating a press fit between the bushing 16 and the edge that defines the hole in the fastener 12, and help maintain the securing member 14 in an upright position prior to installation.

(26) Further, the lower sheath 20 has a contour that transitions inwardly toward its distal end, forming a substantially frustoconical outer contour. Additionally, with reference to the cross-section of FIG. 7B, the inner passage defined by the lower sheath 20 takes a modified, somewhat frustoconical shape that is tighter (or narrower) than the outer frustoconical shape. These characteristics and relationships have been shown to be advantageous in providing mechanical leverage for splitting the bushing 16 via the driven securing member 14. During installation, each of the sheath segments 21 and the associated ribs 25 are forced away from the securing member 14 in a flared motion outward and upward towards the bottom surface 34 of the fastener 12. In addition to maintaining the securing member 14 in its upright aligned position before installation, the ribs 25, in combination with the annular shoulder 22, help prevent the securing member 14 from being pulled back out of the fastener 12 in the installed position. As shown most clearly in the cross-sectional view of FIG. 7B and the top elevation view of FIG. 8A, the inner surface of each segment 21 of the lower sheath 20 also transitions inwardly toward the distal end, and includes a series of spaced apart nubs 42. Each nub 42 is substantially circumferentially aligned with a rib 25 intermediate successive slits 24 in the lower sheath 20. The inward nubs 42 assist in maintaining a tight and secure fit with the elongate securing member 16 prior to driving the securing member through the hole, and further provide an abutment surface with the securing member to initiate the outward expansion or flaring action of each sheath segment 21 as the securing member is driven through.

(27) As shown in the Figures, the upper collar 18 extends upward away from the annular shoulder 22 such that the collar 18, sheath 20 and intermediate annular shoulder 22 of the bushing combine to form an inner passage 40 for holding the securing member. The upper collar 18 includes a plurality of notches 26 that are substantially equidistantly spaced along its circumference. In the depicted embodiment, the notches 26 extend through the majority or entirety of the axial length of the upper collar 18 from an open portion in the collar upper edge. Preferably, the notches are additionally substantially aligned with the slits 24 in the lower sheath and an opening 29 in the annular shoulder (discussed in greater detail below). In the assembly and during operation, the upper collar 18 provides additional axial height and leverage to increase the points of contact between the bushing 16 and the securing member 14, thereby maintaining the securing member tightly in its upright position aligned with the fastener hole in its initial position and as the securing member is driven through the hole. The upper collar 18 may have a height that is at least 1.5 threads of the securing member 14. Such a height ratio ensures at least three points of contact (and in some orientations four points of contact) between the securing member 14 and the bushing 16, which assists in maintaining the securing member 14 rigid and upright within the bushing 16.

(28) Referring to FIGS. 5, 7A and 8B, a plurality of indentations 28 interrupt the annular shoulder 22. While not visible in the elevation views, the indentations 28 are circumferentially spaced from one another around the shoulder 22. Preferably, three indentations 28 are evenly spaced about the circumference of the shoulder 22, with an indentation substantially circumferentially aligned with each slit 24 in the lower sheath 20 and each notch 26 in the upper collar 18. As can be seen best in FIGS. 7A and 8B, in the depicted embodiments, each indentation 28 extend radially inwardly through the entire radial extent of the shoulder 22 and meet an aligned notch 26, defining a radial opening 29. The described and depicted characteristics and relationships between the aligned slits 24, notches 26, and indentations 28, with openings 29, as well as the contours of the lower sheath 22 cooperate to allow the separation and breaking away of the intermediate bushing 16 into a plurality of distinct sections by the outward force from a securing member 14 being driven into the fastener 12.

(29) In a typical installation of a fastener 12, a user first aligns the fastener against the appropriate building member or members, for example, within a side groove of a decking plank supported by a joint. The user can then drive the securing member 14 downward through the hole in the fastener and thus through the bushing 16. As the securing member 14 is driven further through the bushing 16, and specifically through the nubs 42 in the lower sheath segments 21, the force from the securing member pushes the distinct segments 21 between the slits 24 outward in a flaring action with the annular shoulder 22 against the upper surface of the fastener. This outward flaring action thus causes the sheath 20 to split along at least one slit 24, preferably along multiple slits. As the securing member is driven further through the bushing 16, the splits along the slits 24 in the lower sheath 20 may continue through the annular shoulder 22 along the indentations 28 and openings 29. Indeed, the bushing 16 may separate into three distinct segments, but a full three-way separation is not required for the bushing to break away to yield a direct metal-on-metal contact between the fastener 12 and securing member 14 in an installed position with the securing member driven into a decking joist and the fastener securing a decking plank relative to the joist (or other building members).

(30) Notably, the above description of an installation using the fastener preset with a securing member via a break-away bushing is with reference to a preferred setting of assembling a decking structure. The inventive embodiments of the bushing and assembly disclosed herein are in no way limited to use in assembling a decking structure with the specific fastener. Countless additional building members and structures can be assembled or formed with different styles of fasteners utilizing the inventive bushing that breaks away during installation to yield a direct metal-on-metal engagement (and associated combination assemblies that utilize such a bushing).

(31) As discussed above and depicted most clearly in FIGS. 7A-8B, the upper collar 18, annular shoulder 22 and lower sheath 20 all include elements and characteristics that promote splitting of the bushing into radial sections. Notably, not all of the elements and characteristic are necessary, and in some applications, a sub-combination of the described elements that promote splitting and breaking away of the bushing 16 are sufficient.

(32) In another preferred embodiment depicted in FIGS. 9-13, a bushing 116 includes a lower sheath 120 and an upper annular shoulder 122 only (without an upper collar). In this embodiment, the annular shoulder 122 and lower sheath 120 are substantially identical to the like elements (20 and 22) in the embodiment shown in FIGS. 1-8B, including surfaces, shapes, relationships and sub-elements. The lower sheath has a series of slits 124 spaced from one another along the circumference of the sheath with an outwardly projecting rib 125 and an inwardly projecting nub 142 positioned on a segment 121 of the sheath between each slit 124. In this particular depicted embodiment, the sheath 120 also has three slits evenly spaced from one another, and thereby defines three substantially similar segments 121. As shown, an inner passage 140 extends through the sheath 120 and annular shoulder 122 for maintaining the securing member 114.

(33) As seen in FIG. 10, the bushing 116 includes indentations 128 in the annular shoulder 122, with each indentation leading to a proximal opening 129 in the shoulder. Like the above embodiment, a slit 124, indentation 128 and opening 129 are aligned to promote splitting of the sheath segments 121 along the slits 124. Essentially, the elements, sub-elements and relationships within the embodiment of the bushing 116 are substantially the same as those within the embodiment of the bushing 16, except for the presence of the upper collar 18 and its features in the bushing 16. The bushing 116 has shown to be suitable for maintaining and supporting smaller securing members for which less axial leverage is required above the annular shoulder.

(34) In preferred embodiments of the disclosed fastener assembly, 10 and 110, and bushing, 16 and 116, the bushing can be molded of a plastic material. The securing member and fastener are typically formed of a metal, such as galvanized steel, for example, optionally coated and/or heat treated. Of course, other metals can be use for these elements.

(35) While a preferred embodiment has been set forth for purposes of illustration, the foregoing description should not be deemed a limitation of the invention herein. Accordingly, various modifications, adaptations and alternatives may occur to one skilled in the art without departing from the spirit of the invention and scope of the coverage.