Mushrooming expandable fastener installation tool and methods
11833577 · 2023-12-05
Inventors
Cpc classification
International classification
Abstract
Methods, systems and tools for securing to a panel an expandable fastener having a threaded component and a mushrooming component, the tool including a sleeve having a cylindrical body with a hollow inside portion and an internal spline configured to match a splined shoulder of the mushrooming component, a drive shaft having a driving portion configured to engage and rotate the threaded component, the driving portion positioned within the hollow portion of the sleeve, and a driven portion configured to be driven by an arbor, the arbor having a first shaft portion configured to engage with the driven portion and drive the drive shaft, and a second shaft portion configured to connect to a drill or nut driver to drive the drive shaft to turn the threaded component relative to the mushrooming component and collapse the mushrooming component.
Claims
1. An installation tool for use with an expandable fastener including a threaded component, having a head, and a mushrooming component, having a splined shoulder, the tool comprising: a sleeve comprising a body including a terminal end, an outward end, a hollow portion extending from the terminal end to the outward end, and an internal spline region at the outward end of the sleeve, the internal spline region configured to match the splined shoulder of the mushrooming component; a drive shaft comprising a first end and a second end, the drive shaft extending from the first end to the second end and defining a driving portion and a driven portion, the driving portion within and extending through the hollow portion from the first end proximate to the internal spline region at the outward end of the sleeve to the terminal end of the sleeve and the driven portion external of the sleeve and extending outward from the terminal end of the sleeve and the driving portion to the second end, the driving portion mounted rotatably within the hollow portion, the driven portion configured to be driven and the driving portion solid along a solid area between the terminal end of the sleeve and a socket in the first end; a cavity extending into the driven portion through the second end and into the driving portion from the driven portion and the terminal end of the sleeve to the solid area; the solid area solid in diametric cross section and extending from the cavity to the socket in the first end proximate to the internal spline region at the outward end of the sleeve, the socket configured to receive and engage to the head and to rotate the threaded component in response to rotation of the drive shaft when the head is received and engaged by the socket, and the solid area dividing the cavity from the socket and providing structural integrity for the driving portion within the hollow portion from the cavity to the socket; a drill bit secured to and extending from an arbor configured to engage to the driven portion drivenly; and the cavity configured to receive the drill bit and the arbor through the second end when the arbor is engaged to the driven portion drivenly, wherein the arbor extends into the cavity in the driven portion through the second end and the drill bit extends into the cavity in the driving portion from the arbor when the arbor is engaged to the driven portion drivenly.
2. The tool of claim 1, wherein the internal spline region includes multiple, separate splined grooves each defining a point, the points separated from each other along a circular arc of less than 90 degrees.
3. The tool of claim 1, wherein the internal spline region includes 12 splined grooves.
4. The tool of claim 1, wherein the socket comprises a hex socket.
5. The tool of claim 1, wherein the first end of the driving portion of the drive shaft is visible at the outward end of the sleeve.
6. The tool of claim 1, wherein the socket comprises a hex socket, and the cavity includes a female hex socket configured to receive the arbor.
7. The tool of claim 1, further comprising a magnet in the socket.
8. The tool of claim 1, further comprising: the arbor engaged to the driven portion drivenly, the arbor extending into the cavity in the driven portion through the second end and the drill bit extending into the cavity in the driving portion from the arbor.
9. The tool of claim 1, wherein the sleeve has a maximum length and a maximum diameter, the maximum length is greater than twice the maximum diameter.
10. The tool of claim 1, wherein an outermost diameter of the drive shaft and an outermost diameter of the sleeve are equal.
11. A system to install an expandable fastener with the tool of claim 1, the system comprising: the tool of claim 1; and the expandable fastener including a threaded component having a head and a mushrooming component having a splined shoulder, wherein the splined shoulder comprises a 12-point externally splined shoulder complementary to the internal spline region of the tool.
12. An installation tool for use with an expandable fastener including a threaded component, having a head, and a mushrooming component, having a splined shoulder, the tool comprising: a sleeve comprising a body including a terminal end, an outward end, a hollow portion extending from the terminal end to the outward end, and an internal spline region at the outward end of the sleeve, the internal spline region configured to match the splined shoulder of the mushrooming component; a drive shaft comprising a first end and a second end, the drive shaft extending from the first end to the second end and defining a driving portion and a driven portion, the driving portion within and extending through the hollow portion from the first end proximate to the internal spline region at the outward end of the sleeve to the terminal end of the sleeve and the driven portion external of the sleeve and extending outward from the terminal end of the sleeve and the driving portion to the second end, the driving portion mounted rotatably within the hollow portion, the driven portion configured to be driven and to abut the terminal end of the sleeve during installation of the expandable fastener and the driving portion solid along a solid area between the terminal end of the sleeve and a socket in the first end; a cavity extending into the driven portion through the second end and into the driving portion from the driven portion and the terminal end of the sleeve to the solid area; the solid area solid in diametric cross section and extending from the cavity to the socket in the first end proximate to the internal spline region at the outward end of the sleeve, the socket configured to receive and engage to the head and to rotate the threaded component in response to rotation of the drive shaft when the head is received and engaged by the socket, and the solid area dividing the cavity from the socket and providing structural integrity for the driving portion within the hollow portion from the cavity to the socket; a drill bit secured to and extending from an arbor configured to engage to the driven portion drivenly and secure to a drill or nut driver; and the cavity configured to receive the arbor through the second end when the arbor is engaged to the driven portion drivenly, wherein the arbor extends into the cavity in the driven portion through the second end and the drill bit extends into the cavity in the driving portion from the arbor when the arbor is engaged to the driven portion drivenly.
13. The tool of claim 12, further comprising the spline region configured to match the splined shoulder having a ⅝ inch 12-point splined holding surface and where the sleeve has a length no less than 1⅝ inches and an external diameter no greater than ⅞ inch.
14. A method of installing an expandable fastener with the tool of claim 13, wherein the expandable fastener comprises a threaded component having a head and a mushrooming component having a splined shoulder, the method comprising: collapsing the mushrooming component by holding the splined shoulder of the expandable fastener with the internal spline region of the tool while turning the head that is engaged with the socket.
15. An installation tool for use with an expandable fastener including a threaded component, having a head, and a mushrooming component, having a shoulder, the tool comprising: a sleeve comprising a body including a terminal end, an outward end, a hollow inside diameter portion extending from the terminal end to the outward end, and a first socket at the outward end of the sleeve, the first socket configured to match the shoulder of the mushrooming component, portions of the first socket having an internal diameter greater than an internal diameter of the hollow inside diameter portion; a drive shaft comprising a first end and a second end, the drive shaft extending from the first end to the second end and defining a driving portion and a driven portion, the driving portion within and extending through the hollow inside diameter portion from the first end proximate to the first socket at the outward end of the sleeve to the terminal end of the sleeve and the driven portion external of the sleeve and extending outward from the terminal end of the sleeve and the driving portion to the second end, the driving portion mounted rotatably within the hollow inside diameter portion, the driven portion configured to be driven and the driving portion solid along a solid area between the terminal end of the sleeve and a socket in the first end; a cavity extending into the driven portion through the second end and into the driving portion from the driven portion and the terminal end of the sleeve to the solid area; the solid area solid in diametric cross section and extending from the cavity to the socket in the first end proximate to the first socket at the outward end of the sleeve, the socket configured to receive and engage to the head and to rotate the threaded component in response to rotation of the drive shaft when the head is received and engaged by the socket, and the solid area dividing the cavity from the socket and providing structural integrity for the driving portion within the hollow inside diameter portion from the cavity to the socket; a drill bit secured to and extending from an arbor configured to engage to the driven portion drivenly and secure to a drill or nut driver; and the cavity configured to receive the drill bit and the arbor through the second end when the arbor is engaged to the driven portion drivenly, wherein the arbor extends into the cavity in the driven portion through the second end and the drill bit extends into the cavity in the driving portion from the arbor when the arbor is engaged to the driven portion drivenly.
16. The tool of claim 15, wherein the driven portion defines a shaft elbow which abuts against the terminal end of the sleeve when the drive shaft is inserted into the sleeve and while the sleeve is held into position during installation of the expandable fastener.
17. The tool of claim 15, the head comprising a 5/16 head, the shoulder comprising a 12-point shoulder, the socket comprising a 5/16 inch hex-head socket, and the first socket comprising a 12-point socket.
18. The tool of claim 15, wherein the socket is defined in part by a wall of the drive shaft, the wall having an internal portion and an external cylindrical portion, the external cylindrical portion having a diameter less than a smallest hollow inside diameter of the sleeve.
19. The tool of claim 15, wherein the first end extends at least partially into the first socket.
20. An installation tool for use with an expandable fastener including a threaded component, having a head, and a mushrooming component, having a shoulder, the tool comprising: a sleeve comprising a cylindrical body including a terminal end, an outward end, a hollow inside diameter portion extending from the terminal end to the outward end, and a first socket at the outward end of the sleeve, the first socket configured to match the shoulder of the mushrooming component; a drive shaft comprising a first end and a second end, the drive shaft extending from the first end to the second end and defining a driving portion and a driven portion, the driving portion within and extending through the hollow inside diameter portion from the first end proximate to the first socket at the outward end of the sleeve to the driven portion external of the sleeve and extending outward from the terminal end of the sleeve and the driving portion to the second end, the driving portion mounted rotatably within the hollow inside diameter portion, the driven portion configured to be driven and the driving portion solid along a solid area between the terminal end of the sleeve and a socket in the first end; a cavity extending into the driven portion through the second end and into the driving portion from the driven portion and the terminal end of the sleeve to the solid area; the solid area solid in diametric cross section and extending from the cavity to the socket in the first end proximate to the first socket at the outward end of the sleeve, the socket configured to receive and engage to the head and to rotate the threaded component in response to rotation of the drive shaft when the head is received and engaged by the socket, and the solid area dividing the cavity from the socket and providing structural integrity for the driving portion within the hollow inside diameter portion from the cavity to the socket; a drill bit secured to and extending from an arbor configured to engage to the driven portion drivenly and secure to a drill or nut driver; the cavity configured to receive the drill bit and the arbor through the second end when the arbor is engaged to the driven portion drivenly, wherein the arbor extends into the cavity in the driven portion through the second end and the drill bit extends into the cavity in the driving portion from the arbor when the arbor is engaged to the driven portion drivenly; and a handle having a prong positioned within a handle port of the sleeve and configured to inhibit removal of the drive shaft from the sleeve.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) Some features of the invention are represented by the accompanied drawings. These drawings capture the major defining features of the invention but are not intended to encompass every variation.
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DETAILED DESCRIPTION OF THE INVENTION
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(23) In one aspect it is important that the length of sleeve 40 be at least two times the measurement of its diameter “d” in order for tool 30 to function best in securing components 17, such as securing fasteners 20 within struts 13 or other components. For instance, a sleeve having such ratio or configuration allows for insertion of the sleeve 40 into an opening 15 of a strut 13 or other component while also having handle 80 positioned sufficiently outside of the opening 15 for operation. This allows a worker to sufficiently hold in place the shoulder 27 of fastener by holding the handle 80, while simultaneously spinning the head 23 positioned within opening 15. Such dimension of the length being at least two times the measurement of the diameter provides the ability to have the sleeve 40 insert within a strut 13 while also being able to hold the sleeve 40 in relative position. This avoids the need to insert a box wrench or use a vice grip or other tool in an attempt to secure the shoulder 27 which is positioned internal the opening 15 of a strut 13 or other component. Were the length of sleeve 40 not at least twice its diameter (or where the handle 80 is not set back at least 1⅝ inches from terminal end of sleeve 40), tool 30 would not be able to be positioned, for instance, in a 1⅝ inch Unistrut so that the terminal end of sleeve 40 fully touches the inside bottom portion of strut 13 while handle 80 maintains clearance from strut 13.
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(25) In one aspect driven portion 56 includes a shaft elbow 58 which abuts against a terminal end 49 of sleeve 40 when the drive shaft 50 is inserted into the sleeve 40. A maximum diameter of driven portion 56 is greater than a maximum diameter of driving portion 52. The driven portion 52 has a maximum outer diameter which is greater than the inside diameter portion of the sleeve 40. In one aspect, an entirety of a terminal end 54 of the driving portion 52 is visible when the drive shaft 50 is positioned within sleeve 40 (See also
(26) In one aspect driving portion 52 includes a solid cross-section area 59. The solid area 59 provides structural integrity for shaft 50, and also presents a shelf 61 for securing a magnet 60 within socket 53. Magnet 60 is inset from terminal end 54 of the driving portion 52. The magnet 60 is positioned, or its position is selectively altered, to impart a magnetic force upon the hex head 23 of the fastener 20. Such magnet 60 allows a user to conveniently insert and hold a fastener 20 within tool 30 while in operation. In one aspect, driving portion 52 has a length extending from shaft elbow 58 to terminal end 54 of 2.750 inches (while sleeve 40 has a total length of 2.85 inches). Other sizes may be used, provided terminal end 54 is positioned at or closely adjacent to internal spline region 44 of sleeve 40. This positioning is important so that the socket 53 may receive head 23 of fastener 20 while spline region 44 simultaneously receives shoulder 27 of fastener 20, particularly where the head 23 and shoulder 27 are arranged in close proximity (or abut each other) as in a FAB-LOK type of fastener 20.
(27) Drive shaft 50 also includes a neck 62 which provides a clearance for receipt of prongs 82 of handle 80 when prongs 82 are inserted into handle ports 48 of sleeve 40. The prongs 82 lock drive shaft 50 within sleeve 40 so shaft 50 cannot be removed easily. Handle 80 is tong shaped and flexible to allow the ends of handle to spread apart and thus allow retraction (or insertion) of prongs 82 into handle ports 48.
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(30) Tool 30 is configured to conveniently fit within the opening 15 of a strut 13 in order to easily secure strut 13 to a panel 18. The external diameter of sleeve 40 is no greater than ⅞ inches and allows for convenient insertion into a standard 1⅝ inch strut. Sleeve 40 also has a length no less than 1⅝ inches so handle 80 may still hold sleeve 40 while a terminal end of sleeve may rest against an inside portion of the strut 13. Such length and width dimension of sleeve 40 and tool 30 allows for ease of insertion of a fastener 20 into strut 13 without having to use a separate box wrench, vice grips or other tool to hold shoulder 27 of the fastener. A user will conveniently utilize the drill bit 90 of the tool 30 and swiftly switch to include the combined drive shaft 50 and sleeve 40 which are connected with handle 80.
(31) Shaft elbow 58 of drive shaft 50 is positioned upon the drive shaft a critical distance from terminal end 54 and in relation to the length of sleeve 40 so that when shaft 50 is fully inserted into sleeve 40, the socket 53 is positioned to receive head 23 while shoulder 27 is simultaneously engaged by socket 46. In one aspect, shaft elbow 58 is positioned 2.750 inches from end 54 while sleeve 40 has a total length of 2.85 inches. The length of sleeve 40 is at least twice the diameter of sleeve 40 to accommodate having a sufficiently narrow profile and sufficient length to secure fasteners 20 within a 1⅝ inch strut 13. The narrow profile and long length also allow for tool 30 to easily secure fasteners within other difficult to access locations, such as when fastening conduit pipe clamps or the like. In one aspect neck 62 has an outer diameter of 0.470 inches which provides clearance to receive prongs 82 to secure drive shaft 50 within sleeve 40.
(32) In a further method aspect, the invention includes utilizing a tool 30 to secure a fastener 20 to a panel. The method includes positioning the socket 46 of sleeve 40 upon the shoulder 27 of fastener 20, simultaneously positioning the socket 53 of drive shaft 50 upon head 23 of the fastener, and turning the head 23 while holding the shoulder 27 in a relatively fixed position. The turning action causes sleeves 26 of the fastener 20 to mushroom and secure the fastener to a panel 18. In aspects, the turning is accomplished using a screwdriver, drill or drill driver, and the holding is accomplished by grasping handle 80 and resisting turning of sleeve 40. A further method includes positioning the sleeve 40 within an opening of a strut 13 and utilizing the method securing steps noted herein. In further aspects the invention includes systems where the tool 30 in conjunction with a fastener 20 is used to secure fastener 20 by operation as noted.
(33) It should be understood, of course, that the foregoing relates to exemplary embodiments of the invention and that modifications may be made without departing from the spirit and scope of the invention as set forth in the following claims.