AU2012233016B2 - Screw fastener - Google Patents
Screw fastener Download PDFInfo
- Publication number
- AU2012233016B2 AU2012233016B2 AU2012233016A AU2012233016A AU2012233016B2 AU 2012233016 B2 AU2012233016 B2 AU 2012233016B2 AU 2012233016 A AU2012233016 A AU 2012233016A AU 2012233016 A AU2012233016 A AU 2012233016A AU 2012233016 B2 AU2012233016 B2 AU 2012233016B2
- Authority
- AU
- Australia
- Prior art keywords
- head
- screw fastener
- screw
- combination according
- socket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005553 drilling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009435 building construction Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 102100028572 Disabled homolog 2 Human genes 0.000 description 1
- 101710197163 Disabled homolog 2 Proteins 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
- F16B23/0038—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially prismatic with up to six edges, e.g. triangular, square, pentagonal, Allen-type cross-sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/02—Spanners; Wrenches with rigid jaws
- B25B13/06—Spanners; Wrenches with rigid jaws of socket type
- B25B13/065—Spanners; Wrenches with rigid jaws of socket type characterised by the cross-section of the socket
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/02—Arrangements for handling screws or nuts
- B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
- B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
- B25B23/105—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit
- B25B23/108—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit the driving bit being a Philips type bit, an Allen type bit or a socket
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/02—Arrangements for handling screws or nuts
- B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
- B25B23/12—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using magnetic means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Plates (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
- Adornments (AREA)
Description
H:\txb\Merwoven\Mtf ortbl®CC\TXB\13309460_l.doc-2/03/2017 2012233016 02 Mar 2017 - 1 -
SCREW FASTENER
The present invention relates to screw fasteners and more particularly to screws for use in building construction such as for fixing composite panels, roofing sheets and cladding. 5
Screws for fixing panels, roofing sheets, and cladding in building construction are typically self-drilling screws having with a hexagonal drive head with integral washer. The screw is driven by engagement within a hexagonal socket of a power tool. While screws having a shank length of about 95mm or less are relatively easy to drive, as the shank length increases 10 above 95mm, as may arise when the shank has to traverse thick insulation or a thermal break, the screw becomes increasingly difficult to install as the screw becomes less stable and tends to wobble. While the wobbling effect can be mitigated by the operator holding the shank of the screw in one hand, this leads to friction and heating and can cause substantial discomfort to the operator. Another effect arising from the combination of wobble and the length of the 15 screw is the tendency for the head of the screw to break out of the drive socket when end load is applied and which is necessary to install the screw. In order to overcome the problem arising from wobbling of longer length screws, applicators are available which hold the screw shank but these tend to be quite expensive, heavy and not easy to use. 20 The present invention relates to a design of screw head and associated drive socket which provides a locking interface between the two to prevent wobble.
According to one aspect of the present invention there is provided a screw fastener having a driving head of polygonal form in combination with a drive socket of corresponding form, the 25 head being tapered such that the head and the drive socket are mated together in a wedging fit, wherein the head has a series of angularly spaced driving faces each inclined relative to the axis of the screw fastener head by an angle of from 3° to 25° and the wedging fit arranges the drive socket wedged against said driving faces so as to drive rotation of the screw fastener by the driving faces. 30
The present invention also provides a drive socket of tapered internal configuration for engagement with a wedging fit with the head of a screw as specified above.
In a preferred embodiment, the head is of hexagonal form and the screw is a self-drilling C:\NRPonbl\DCOEJLW10J6S.I DOC-2/IO/20I2 2012233016 02 Oct 2012 -2- screw.
An embodiment of the invention will now be described by way of example only with reference to the accompanying drawings in which: 5 Figure 1 is a side view of the head end of a screw in accordance with the preferred embodiment, the shank and remainder of the screw being omitted from that figure;
Figure 2 is an end view corresponding to Figure 1;
Figure 3 is a side view in section showing a drive bit engaged with the head of the screw; and 10 Figure 4 is an enlarged detail showing a wedging engagement between a socket of the drive bit and the head of the screw. A screw in accordance with the preferred embodiment of the invention has a hexagonal drive head 2 and integral washer 4. In contrast to conventional drive heads of this form, 15 the hexagonal head is tapered towards its outer end. The taper angle is not required to be particularly large, a taper angle of only a few degrees per face, such as 5° equivalent to an included angle a of 10°, being sufficient. However a wedge fit could be provided with a taper angle of as little as 3° or as high as 25° although taper angles towards the lower end of that range are considered to provide the better wedging effect, particularly an angle of 20 about 5° and a little above that, specifically up to about 8°. The head 2 is designed for use with a drive socket 6 of correspondingly tapered form of a drive bit 8, whereby when the socket 6 is engaged over the head there will be a tight locking fit between the head and the socket, effectively a wedging fit as is clearly shown in Figure 4. As a consequence, in the condition of driving engagement between the socket 6 and head 2 there is no clearance 25 between the two and wobble between the socket and head is eliminated. In contrast, in a conventional hexagonal head with parallel sides there is necessarily a clearance between the socket and the head and it is that clearance which gives rise to the potential for wobble between the two; that clearance cannot be eliminated due to the need for the socket to fit the socket easily over the head, and due to manufacturing tolerances that clearance cannot 30 be reduced to any practical extent. H:\txb\Interwoven\NRPortbl\DCC\TXB\13217670_l.docx - 22/2/17 2012233016 22 Feb 2017 -3 -
In the embodiment shown the socket 6 includes a magnetic pin 10 to retain the screw head 2, although that is not essential as the wedging fit between the screw head will itself provide a retention effect.
The remainder of the design of the screw in terms of its shank, thread, and tip is 5 substantially conventional and where the screw is a self-drilling screw, the tip will include a drilling portion of conventional form. Although the primary utility of the preferred embodiment is in relation to self-drilling screws, it is to be understood that the invention is applicable also to screws without that capability.
While the primary utility of the invention is in relation to screws having a length of greater 10 than 95mm as it is with screws of that length where the major wobble problems arise, nevertheless it could also be used with screws of shorter length.
Although in the preferred embodiment the drive head is of hexagonal form it could alternatively be of other polygonal shape having a series of angularly spaced driving faces which are tapered, in other words inclined, relative to the longitudinal axis of the screw for 15 co-operation with a drive socket of corresponding form.
The embodiment has been described by way of example only and modifications are possible within the scope of the invention.
The reference in this specification to any prior publication (or information derived from it), or to any matter which is known, is not, and should not be taken as an acknowledgment or 20 admission or any form of suggestion that that prior publication (or information derived from it) or known matter forms part of the common general knowledge in the field of endeavour to which this specification relates.
Throughout this specification and the claims which follow, unless the context requires otherwise, the word "comprise", and variations such as "comprises" and "comprising", will 25 be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps.
Claims (7)
- THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:1. A screw fastener having a driving head of polygonal form in combination with a drive socket of corresponding form, the head being tapered such that the head and the drive socket are mated together in a wedging fit, wherein the head has a series of angularly spaced driving faces each inclined relative to the axis of the screw fastener head by an angle of from 3° to 25° and the wedging fit arranges the drive socket wedged against said driving faces so as to drive rotation of the screw fastener by the driving faces.
- 2. A screw fastener in combination according to claim 1, wherein the angle of inclination of each face to the axis of the screw fastener head is from about 5° to 8°.
- 3. A screw fastener in combination according to claim 1, wherein the angle of inclination of each face to the axis of the screw fastener head is about 5°.
- 4. A screw fastener in combination according to any one of claims 1 to 3, wherein the head is of hexagonal form.
- 5. A screw fastener in combination according to any one of claims 1 to 4 having a shank length of about 95mm or more.
- 6. A screw fastener in combination according to any one of claims 1 to 5 having a washer integral with the head.
- 7. A drive socket in combination according to any one of claims 1 to 6, wherein the drive socket has a tapered internal configuration for engagement with said wedging fit.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2012233016A AU2012233016B2 (en) | 2011-10-26 | 2012-10-02 | Screw fastener |
AU2016259456A AU2016259456B2 (en) | 2011-10-26 | 2016-11-18 | Screw fastener |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2011904446A AU2011904446A0 (en) | 2011-10-26 | Screw fastener | |
AU2011904446 | 2011-10-26 | ||
AU2012233016A AU2012233016B2 (en) | 2011-10-26 | 2012-10-02 | Screw fastener |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2016259456A Division AU2016259456B2 (en) | 2011-10-26 | 2016-11-18 | Screw fastener |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2012233016A1 AU2012233016A1 (en) | 2013-05-09 |
AU2012233016B2 true AU2012233016B2 (en) | 2017-04-13 |
Family
ID=47148979
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2012233016A Active AU2012233016B2 (en) | 2011-10-26 | 2012-10-02 | Screw fastener |
AU2016259456A Active AU2016259456B2 (en) | 2011-10-26 | 2016-11-18 | Screw fastener |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2016259456A Active AU2016259456B2 (en) | 2011-10-26 | 2016-11-18 | Screw fastener |
Country Status (3)
Country | Link |
---|---|
AU (2) | AU2012233016B2 (en) |
TW (1) | TW201331484A (en) |
WO (1) | WO2013062895A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5622901B1 (en) | 2013-07-29 | 2014-11-12 | 日東電工株式会社 | Wireless power transmission device and method for controlling power supply of wireless power transmission device |
DE102016124719A1 (en) * | 2016-12-16 | 2018-06-21 | Nicole Bongartz | Method for non-rotatable connection of two components |
EP3807544A1 (en) | 2018-06-15 | 2021-04-21 | Nicole Bongartz | Method for connecting two components for conjoint rotation |
DE102020110450B4 (en) | 2020-04-16 | 2024-05-23 | Nicole Bongartz | Drive element |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5277531A (en) * | 1992-09-10 | 1994-01-11 | Snap-On Tools Corporation | Device having socket with retention surfaces |
US6045311A (en) * | 1998-09-10 | 2000-04-04 | Chang; Peter Jenn-Hai | Bolt, nut, and wrench in taper design for turning the bolt and the nut |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US755804A (en) * | 1902-03-20 | 1904-03-29 | George Crocker Smith | Screw for metal, wood, &c., and means for operating same. |
FR2204242A5 (en) * | 1972-10-25 | 1974-05-17 | Martin Georges | |
AT388215B (en) * | 1985-07-11 | 1989-05-26 | Sfs Stadler Ag | Fastener and driving tool therefor |
DE102009007945A1 (en) * | 2009-02-06 | 2010-08-19 | Flaig, Hartmut | Threaded element, threaded device, system and handling method |
US8291795B2 (en) * | 2010-03-02 | 2012-10-23 | Phillips Screw Company | Fastener system with stable engagement and stick fit |
-
2012
- 2012-10-02 AU AU2012233016A patent/AU2012233016B2/en active Active
- 2012-10-15 TW TW101137976A patent/TW201331484A/en unknown
- 2012-10-22 WO PCT/US2012/061280 patent/WO2013062895A1/en active Application Filing
-
2016
- 2016-11-18 AU AU2016259456A patent/AU2016259456B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5277531A (en) * | 1992-09-10 | 1994-01-11 | Snap-On Tools Corporation | Device having socket with retention surfaces |
US6045311A (en) * | 1998-09-10 | 2000-04-04 | Chang; Peter Jenn-Hai | Bolt, nut, and wrench in taper design for turning the bolt and the nut |
Also Published As
Publication number | Publication date |
---|---|
TW201331484A (en) | 2013-08-01 |
NZ624374A (en) | 2016-05-27 |
AU2016259456A1 (en) | 2016-12-08 |
WO2013062895A1 (en) | 2013-05-02 |
NZ716303A (en) | 2017-02-24 |
AU2016259456B2 (en) | 2019-02-14 |
AU2012233016A1 (en) | 2013-05-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU2016259456B2 (en) | Screw fastener | |
US8429875B2 (en) | Concrete foundation form screw and method of use | |
US8863469B2 (en) | Thermal clip attachment apparatus for masonry anchors and methods thereof | |
JP6309085B2 (en) | screw | |
EP3052821B1 (en) | Asymmetric fastener recess and key | |
CA2707410C (en) | Screw with dual edge on thread | |
US9611882B2 (en) | Back-out resistant fastener | |
EP3017204B1 (en) | Fastening element and fastening assembly | |
US20050147480A1 (en) | Anti-strip-out fastener | |
JP2001099122A (en) | Screw anchor | |
NZ624374B2 (en) | Screw fastener | |
NZ716303B2 (en) | Screw fastener | |
WO2010111213A1 (en) | Drive system for threaded fasteners | |
AU2014248482B2 (en) | Metal frame members for use in building construction | |
JP4678786B2 (en) | Cross hole screw and driver bit | |
AU2012216330B2 (en) | Screw fastener | |
JP3963276B2 (en) | Cross hole screw | |
JP2003028122A (en) | Screwing machine screw | |
AU2006230763B2 (en) | A Self Drilling Anti-Removal Screw and Tool | |
TW201719032A (en) | Fastener | |
KR20050111234A (en) | Anchor bolt | |
KR20070042383A (en) | Method for bolt fastening |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FGA | Letters patent sealed or granted (standard patent) |