US20090126314A1 - Post Anchor and Post Comprising the Same - Google Patents
Post Anchor and Post Comprising the Same Download PDFInfo
- Publication number
- US20090126314A1 US20090126314A1 US11/884,842 US88484206A US2009126314A1 US 20090126314 A1 US20090126314 A1 US 20090126314A1 US 88484206 A US88484206 A US 88484206A US 2009126314 A1 US2009126314 A1 US 2009126314A1
- Authority
- US
- United States
- Prior art keywords
- post
- section
- core diameter
- drill bit
- drillhole
- 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.)
- Abandoned
Links
- 238000005553 drilling Methods 0.000 claims description 30
- 239000000853 adhesive Substances 0.000 claims description 15
- 230000001070 adhesive effect Effects 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 7
- 239000002023 wood Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000004323 axial length Effects 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/22—Sockets or holders for poles or posts
- E04H12/2253—Mounting poles or posts to the holder
-
- 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
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
- F16B25/0031—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the screw being designed to be screwed into different materials, e.g. a layered structure or through metallic and wooden parts
-
- 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
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
- F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
- Dowels (AREA)
Abstract
Disclosed is a post anchor (1) comprising two final sections (11, 12), one (11) of which can be introduced into a post (10) while the other one (12) is used for fixing the anchor (1) to or in another element. The section (11) that can be introduced into the post represents a drill bit section (11) which is used for introducing a bore (20) into the post (10) in a substantially stress-free manner. The drill bit section (11) in the bore (20) is provided with essentially no axial clearance and is preferably embodied as a screw bit. The drill bit section (11) has a first smaller drill core diameter (31) in a first zone (31) bordering the tip thereof while having a larger drill core diameter (32) in a second zone (32) located closer to the other section (12) in the longitudinal direction thereof (13).
Description
- The invention relates to a post having a post anchor connected with the post and comprising two end sections, where one section extends into the post and the other section is intended for fastening on or in another element.
- A post anchor of this type is known from the prior art, for example, from DE 36 34 266. In that document, a screw-in threaded rod is adhesively bonded in a corresponding drillhole in a post, a longitudinal groove being provided on the threaded rod so that the glue can accordingly be allowed to enter the drillhole between the threaded rod and the wall of the drillhole.
- Another post anchor is known from DE 199 12 815, in which a threaded spike is provided on a plate which can be placed against the underside of a post, this threaded spike penetrating the post during positioning of the post anchor. Provided on the opposite side of the post anchor is a sleeve with an internal thread so that an anchor bar can be subsequently screwed in outside of the post.
- In all the proposals of the prior art, even when the threaded rods are glued in, there is a problem in terms of the parallelism of the post anchor and post. This means that the post anchor does not usually have its center axis lying exactly parallel to the longitudinal axis of the post. This is an unwanted property of such a system and a disadvantage when assembling such post anchor systems on building sites.
- In practice, the unit consisting of threaded rod and post is therefore not, as in DE 199 12 815, put together once on the building site; instead, this takes place beforehand so that the parallelism can be achieved to the greatest possible degree under industrial production conditions.
- Moreover, the connection of metal anchors in wooden posts usually leaves something to be desired in terms of the force required to extract the anchors, for example.
- Taking this prior art as a starting point, the object on which the invention is based is to provide a post anchor of the type mentioned in the beginning which has better parallelism and in which the fixing is, moreover, better secured against twisting.
- In an embodiment of the present invention a post includes a post anchor connected with the post and includes two end sections, where one section extends into the post and the other section is intended for fastening on or in another element, wherein the post includes a drillhole, wherein one section is a drill bit section, having in a first segment, adjacent to its tip, a smaller drilling core diameter and having in a second segment, arranged nearer to the other section, a larger drilling core diameter, wherein the drillhole has substantially no radial play with the drill bit section for arranging the section introduced in the post in the drillhole in the post in a substantially stress-free manner.
- In another embodiment of the present invention, a post anchor includes two end sections, where one section can be introduced into a post and the other section is intended for fastening on or in another element, wherein the section which can be introduced into the post is a drill bit section for making a drillhole in the post in a substantially stress-free manner, which drillhole has substantially no radial play with the drill bit section, characterized in that the drill bit section has in a first segment, in the longitudinal direction adjacent to its tip, a smaller drilling core diameter and in a second segment, arranged nearer to the other section, a larger drilling core diameter.
- In yet another embodiment of the present invention, a method includes introducing a post anchor into a post, characterized in that it includes the following steps: (a)
- drilling a drillhole in the post with the drill bit section (11) of the post anchor, (b) introducing adhesive into the drillhole with the drill bit section inserted so as to take up, by filling, any remaining radial play and the axial play of the drill bit section in the drillhole, or, alternatively, withdrawing the drill bit section, introducing adhesive into the drillhole and reinserting the drill bit section into the at least partially adhesive-filled drillhole.
- This object is achieved with a post having a post anchor connected with the post and comprising two end sections, where one section extends into the post and the other section is intended for fastening on or in another element, wherein the post comprises a drillhole, wherein one section is a drill bit section, having in a first segment, adjacent to its tip, a smaller drilling core diameter and having in a second segment, arranged nearer to the other section, a larger drilling core diameter, wherein the drillhole has substantially no radial play with the drill bit section for arranging the section introduced in the post in the drillhole in the post in a substantially stress-free manner.
-
FIG. 1 is a perspective view of a post according to an embodiment of the present invention - The invention will now be described in more detail with the aid of an exemplary embodiment with reference to the drawing. The single drawing shows a partly sectioned perspective view of a post together with an inserted post entrance.
- The
reference number 1 is used to denote a post. Thepost 1 is made of wood and has a square cross section. Of course, the cross section may also be shaped differently, being for example round or elliptical, rectangular or polygonal. The material of thepost 1 may also be chosen from another material only if these materials are similar to wood within the context given below. The similarity in question is in particular important for plastic materials. - Said
post 1 has a longitudinal axis whose orientation here is indicated by the arrow 2 running parallel to it. Thepost 1 can be fastened on a wall or floor surface (not shown in the FIGURE) with the aid of a post anchor (anchor 10 for short) according to the invention. The FIGURE shows one moment during the production of the connection betweenanchor 10 andpost 1 when theanchor 10 has not yet been fully sunk in thepost 1. - The
anchor 10 is preferably constructed in one piece and as such comprises at least twodifferent regions first region 11 is made up of an auger bit, thisregion 11 being intended to be set into thepost 1. Thesecond region 12 can be designed according to the particular application of the post anchor; in particular it may thus be a threaded rod section. This threadedrod section 12, either by itself or by way of a further section (not shown in the drawing), can be positively connected to a drive, for example a drilling machine, to enable theauger bit 11 to be driven into thepost 1. - The FIGURE shows, in dotted form, the outlines of a
drillhole 20 in which theauger bit section 11 has already been advanced more than halfway. Instead of using an auger bit which allows chips cut out of the post to be lifted out, use may also be made of any other drill bit which makes possible the production of a stress-free bore, in particular in wood, in which there is no radial play. Radial play here is to be understood as meaning thedistance 21 between the outside of thedrill bit 11 and the inner wall of thebore 20. - The
auger bit 11 extracts chips from thedrillhole 20 and at the same time creates a certain free space in the axial direction, i.e., along thelongitudinal axis 13 of theanchor 10, into which free space an adhesive can be passed in through theupper opening 22 of thebore 20 once thedrill bit section 11 has been fully inserted. Particularly advantageous adhesives are epoxy resin-based adhesives and polyurethanes. Before the adhesive is introduced, theanchor 10 may preferably be rotated back by an eight to a half of a rotation in order to make it easier to pass in the adhesive. Alternatively, it may be completely withdrawn, the adhesive poured in and the drill bit reinserted. - A drill bit according to the prior art only supports its own weight and forces are solely applied in the longitudinal direction, i.e., along the
axis 13. Thepost anchor 10 here receives the bearing pressure. This is true for the threadedrod section 12 as well as for thedrill bit section 11. Therefore thedrill bit section 11 according to the invention is divided into two different segments, having received thereference numerals drill bit section 11 has first drilling core diameter orcentral core 31, followed by acentral segment 42 of thedrill bit 11, having asecond core diameter 32, being larger than the diameter of the firstdrilling core diameter 31. - In a preferred embodiment the first
drilling core diameter 31 is set between one fourth to one half of the external diameter of thedrill bit 11. The seconddrilling core diameter 32 is set between one half and ⅘ of the external diameter of thedrill bit 11. This creates between the twosegments 41 and 42 a discontinuity between the diameters of thedrilling cores areas post anchor 10 without impeding the extraction of the chips due to a larger core drill diameter. - Instead of two
segments drill bit 11. It is of course possible to choose different transitions and a higher number of segments. - Additionally it is possible to use a continuously enlarging drill core for achieving a steady growth of stiffness of the
anchor 10 in direction of arrow 2. - The threaded
rod section 12 comprises two different elements, the threaded rod as such and the drill chuck support. The threadedrod section 12 and the drill chuck support can be positioned one behind the other on anaxis 13, but it is also possible to adapt the side surface of the threadedrod section 12, e.g., providing a groove, to create a drill chuck support within this section. - At
location 33 the drill head has a slightly larger diameter then the drill core 34. - The drill bit according to the invention ensures axially correct fitting, allowing the
anchor 10 to be well centered in thepost 1. The prior art according to DE 199 12 815 employing the spike results in a displacement of the material of thepost 1 and thus in stresses therein. Theauger bit 10 produces a stress-free bore in wood and other comparable materials. - The length of the
anchor 10 depends on its field of application. For apost 1 having a diameter or cross-sectional dimensions of from 5 to 10 centimeters, given a diameter of theauger bit 11 of between 6 and 10 millimeters, a customary total length of the anchor may be between 10 and 70 centimeters. Preferably, this length is divided in half between thedrill bit part 11 and the threadedrod part 12. Of course, it is also possible for the threadedrod 12 or theauger bit 11 to be shorter or longer than the respective other section. It is also possible to provide a connection element (not shown in the drawing) between theauger bit 11 and the threaded rod 12 (or a flat rod without a thread). This may be an outer hexagonal section or a disc which is oriented radially with respect to the longitudinal axis. - The
anchor 10 according to this invention provides a simple, very secure anchor device which is able to be centered and which is correctly aligned axially, thisanchor device 10 being driven into thepost 1 beforehand within a storage area or during the production of said post. Alternatively, thepost anchor 10 may be set into theposts 1 provided on a building site once on site. - The diameter of the
drill bit section 11 of thepost anchor 10 can be chosen between 5 and 18 millimeters and the total length of thepost anchor 10 can be chosen between 10 and 100 centimeters, wherein said length is preferably divided equally between thedrill bit section 11 and theother section 12. - The scope of protection is in no way intended to be limited by the preceding description showing an exemplary embodiment and shall apply only to the claims which follow.
Claims (16)
1-10. (canceled)
11. A post comprising:
a drillhole provided in a longitudinal end surface of the post and
a post anchor,
wherein the post anchor comprises:
a first section, being a drill bit section and extending into the drillhole of the post and
a second section intended for fastening on or in another element,
wherein the first section comprises:
a first segment, adjacent to its tip and having a first drilling core diameter and
a second segment, arranged nearer to the second section and having a second drilling core diameter,
wherein the first drilling core diameter is smaller than the second drilling core diameter,
wherein the drillhole has substantially no radial play with said drill bit section.
12. The post as claimed in claim 11 , wherein an adhesive is provided in the free space between the drill bit section and the drill hole in radial direction.
13. The post as claimed in claim 11 , wherein an adhesive is provided in the free space between the drill bit section and the drill hole in axial direction.
14. The post as claimed in claim 11 , wherein the drill bit is an auger bit in the first and in the second segment.
15. The post as claimed in claim 11 , wherein the first section comprises a third segment, arranged between the first and second segment and having a drill core diameter which is larger than the drill core diameter of the first segment and smaller than the drill core diameter of the second segment.
16. The post as claimed in claim 11 , wherein it is designed in one piece and in that the other section is a threaded rod.
17. The post as claimed in claim 11 , wherein it is designed in one piece and in that the two sections abut.
18. The post as claimed in claim 11 , wherein the drill bore is provided centrally in the longitudinal end surface of the post.
19. The post as claimed in claim 11 , wherein the post is made of wood or of plastic materials.
20. The post as claimed in claim 11 , wherein the post has a square, elliptical, rectangular or polygonal cross section.
21. A post anchor comprising:
a first section, being a drill bit section and intended to extend into a drillhole of a post and
a second section intended for fastening on or in another element,
wherein the first section comprises
a first segment, adjacent to its tip and having a first drilling core diameter and
a second segment, arranged nearer to the second section and having a second drilling core diameter,
wherein the first drilling core diameter is smaller than the second drilling core diameter.
22. The post anchor as claimed in claim 21 , wherein the ratio between the axial length of the first area having the first drilling core diameter to the area having the second drilling core diameter is between 1:3 and 1:1
23. The post anchor as claimed in claim 21 , wherein the first drilling core diameter is set between one fourth to one half of the external diameter of the drill bit and the second drilling core diameter is set between one half and ⅘ of the external diameter of the drill bit.
24. A method of introducing a post anchor into a post, wherein the post comprises:
a drillhole provided in a longitudinal end surface of the post and
a post anchor, and
wherein the post anchor comprises:
a first section, being a drill bit section and extending into the drillhole of the post and
a second section intended for fastening on or in another element,
wherein the first section comprises:
a first segment, adjacent to its tip and having a first drilling core diameter and
a second segment, arranged nearer to the second section and having a second drilling core diameter,
wherein the first drilling core diameter is smaller than the second drilling core diameter,
wherein the drillhole has substantially no radial play with said drill bit section,
the method comprising the steps of:
drilling a drillhole in the post with the drill bit section of the post anchor,
introducing an adhesive into the drillhole with the drill bit section inserted so as to take up, by filling, any remaining radial play and the axial play of the drill bit section in the drillhole, or, alternatively, withdrawing the drill bit section, introducing adhesive into the drillhole and reinserting the drill bit section into the at least partially adhesive-filled drillhole.
25. The method as claimed in claim 24 , characterized in that, prior to introducing the adhesive, the post anchor is rotated back by an eighth to a half of a rotation.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE305/05 | 2005-02-22 | ||
CH3052005 | 2005-02-22 | ||
PCT/CH2006/000092 WO2006089441A1 (en) | 2005-02-22 | 2006-02-13 | Post anchor and post comprising the same |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090126314A1 true US20090126314A1 (en) | 2009-05-21 |
Family
ID=36084257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/884,842 Abandoned US20090126314A1 (en) | 2005-02-22 | 2006-02-13 | Post Anchor and Post Comprising the Same |
Country Status (8)
Country | Link |
---|---|
US (1) | US20090126314A1 (en) |
EP (1) | EP1851402B1 (en) |
AT (1) | ATE466153T1 (en) |
CA (1) | CA2597950A1 (en) |
DE (1) | DE502006006845D1 (en) |
NO (1) | NO20074197L (en) |
SI (1) | SI1851402T1 (en) |
WO (1) | WO2006089441A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018208255A1 (en) * | 2018-05-25 | 2019-11-28 | Toge Dübel Gmbh & Co. Kg | Anchoring anchor for anchoring in a material, a fastening anchor setting tool, and a method for anchoring a fastening anchor in a material |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US930607A (en) * | 1908-09-19 | 1909-08-10 | Edwin A Morrill | Fence-post. |
US1556655A (en) * | 1924-11-11 | 1925-10-13 | Larned S Whitney | Method of making auger bits |
US5975813A (en) * | 1998-02-05 | 1999-11-02 | Schmotzer; Norman H. | Single flute drill and method of construction |
US7726923B2 (en) * | 2002-11-25 | 2010-06-01 | Ed. Geistlich & Söhne AG | Anchor bar with a support block |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69817276T2 (en) * | 1997-05-29 | 2004-02-19 | Black & Decker Inc., Newark | twist drill |
DE50103818D1 (en) * | 2000-03-10 | 2004-11-04 | Heboss Holzbautechnik Gmbh Uzw | post foot |
DE202004013483U1 (en) * | 2004-08-28 | 2004-10-28 | Heitz, Walter, Dipl.-Ing. | Support foot for posts for pergolas, canopies, fences and suchlike has tubular upright support with four inner slotted, angled, raised half-round support surfaces serving as axial support surfaces for flanged nut with steel ring |
-
2006
- 2006-02-13 DE DE502006006845T patent/DE502006006845D1/en active Active
- 2006-02-13 US US11/884,842 patent/US20090126314A1/en not_active Abandoned
- 2006-02-13 EP EP06704543A patent/EP1851402B1/en active Active
- 2006-02-13 CA CA002597950A patent/CA2597950A1/en not_active Abandoned
- 2006-02-13 WO PCT/CH2006/000092 patent/WO2006089441A1/en active Application Filing
- 2006-02-13 AT AT06704543T patent/ATE466153T1/en active
- 2006-02-13 SI SI200630728T patent/SI1851402T1/en unknown
-
2007
- 2007-08-16 NO NO20074197A patent/NO20074197L/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US930607A (en) * | 1908-09-19 | 1909-08-10 | Edwin A Morrill | Fence-post. |
US1556655A (en) * | 1924-11-11 | 1925-10-13 | Larned S Whitney | Method of making auger bits |
US5975813A (en) * | 1998-02-05 | 1999-11-02 | Schmotzer; Norman H. | Single flute drill and method of construction |
US7726923B2 (en) * | 2002-11-25 | 2010-06-01 | Ed. Geistlich & Söhne AG | Anchor bar with a support block |
Also Published As
Publication number | Publication date |
---|---|
CA2597950A1 (en) | 2006-08-31 |
DE502006006845D1 (en) | 2010-06-10 |
ATE466153T1 (en) | 2010-05-15 |
WO2006089441A1 (en) | 2006-08-31 |
NO20074197L (en) | 2007-10-25 |
EP1851402B1 (en) | 2010-04-28 |
EP1851402A1 (en) | 2007-11-07 |
SI1851402T1 (en) | 2010-08-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ED. GEISTLICH SOHNE AG FUR CHEMISCHE INDUSTRIE, SW Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FANKHAUSER, URS;BERTOLA, BRUNO;REEL/FRAME:020905/0058;SIGNING DATES FROM 20070829 TO 20071005 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |