GB2179114A - Attachment for tubular body - Google Patents
Attachment for tubular body Download PDFInfo
- Publication number
- GB2179114A GB2179114A GB08619366A GB8619366A GB2179114A GB 2179114 A GB2179114 A GB 2179114A GB 08619366 A GB08619366 A GB 08619366A GB 8619366 A GB8619366 A GB 8619366A GB 2179114 A GB2179114 A GB 2179114A
- Authority
- GB
- United Kingdom
- Prior art keywords
- attachment
- anchoring element
- tubular body
- abutment piece
- post
- 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.)
- Withdrawn
Links
- 125000006850 spacer group Chemical group 0.000 claims abstract description 11
- 238000004873 anchoring Methods 0.000 claims description 23
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 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
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/04—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening internal, i.e. with spreading action
-
- 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
- F16B9/00—Connections of rods or tubular parts to flat surfaces at an angle
- F16B9/05—Connections of rods or tubular parts to flat surfaces at an angle by way of an intermediate member
- F16B9/054—Connections of rods or tubular parts to flat surfaces at an angle by way of an intermediate member the intermediate member being threaded
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/623—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
- E01F9/631—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact
- E01F9/638—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact by connection of stud-and-socket type, e.g. spring-loaded
-
- 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
- F16B29/00—Screwed connection with deformation of nut or auxiliary member while fastening
-
- 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
- F16B9/00—Connections of rods or tubular parts to flat surfaces at an angle
- F16B9/05—Connections of rods or tubular parts to flat surfaces at an angle by way of an intermediate member
- F16B9/056—Connections of rods or tubular parts to flat surfaces at an angle by way of an intermediate member the intermediate member extending through the flat surface; the rod or tubular part extending through the flat surface
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Dowels (AREA)
Abstract
An attachment, e.g, for providing a tubular post P with a foot plate 14, includes a radially expandable insert 10 for fixing within the post P. The insert 10 may have a central bush 22 from which a skirt 18 extends downwardly and outwardly. A bolt 16 engages in the bush 22; turning the bolt 16 causes the insert 10 to be pulled towards the foot plate 14 so that the skirt 18 tends to flatten and expand radially, constrained by contact with the foot plate 14 or with an interposed spacer 12. In another embodiment, the bush 22 is omitted and the central hole in the insert 10 is threaded to receive the bolt 16. The head of the bolt 16 is accommodated in a recess in the plate 14, the upper surface of the recess projecting towards the insert 10 to assist radial expansion. <IMAGE>
Description
SPECIFICATION
Attachment for tubular body
The present invention relates to an attachment for a tubular body, particularly a post, and particularly to an attachment for providing a foot. However, the attachment may be adapted for other purposes, and for mounting to tubular bodies other than posts. (The term "tubular body" is used to include part-tubular bodies.) In another aspect the invention provides a method of mounting a component to a tubular body. In a third aspect it provides a tubular body having a component mounted to it.
Broadly, the invention provides an attachment which comprises a radially expandable anchoring element for insertion into the cavity of a tubular body; and means for expanding it after insertion so as to lock it against the interior surface of the body. Preferably it comprises an abutment piece for abutting the body externally, adjacent the mouth of the cavity; and an elongate shank member for connecting the anchoring element and the abutment piece. Preferably the abutment piece is urgeable towards the anchoring element to tension the assembly. Suitably, the anchoring element comprises a deformable convex member which, in use, is deformed towards planarity to urge said radial expansion.The shank member may have a threaded portion passing through a threaded portion of the anchoring element or of the abutment piece, the arrangement being such that it is rotatable to urge said element and piece together. The assembly may include a spacer between the anchoring element and the abutment piece.
Some embodiments of the invention will now be described in more detail with reference to the accompanying drawings in which:
Figure 1 is a side elevation of an attachment for a tubular post embodying the invention;
Figure 2 is a perspective view of the anchoring element thereof;
Figure 3 is a vertical section through a second embodiment in use; and
Figure 4 is a perspective view of the anchoring element of a modification of the Fig. 3 embodiment.
The assembly shown in Figs. 1 and 2 consists of an anchoring element 10, a spacer ring 12, an abutment piece in the form of a base plate 14, and a shank member in the form of a screw-bolt 16. The anchoring element 1Q has an upwardly convex skirt 18, in shape resembling an umbrella. Its smooth form is interrupted by a plurality of radiallyextending bulges 20. Each bulge 20 is of maximum height at the circumference, and dies away towards the centre. At the apex of the skirt 18, there is an aperture, and a threaded bush 22 is secured (e.g. by welding) in register with it, on top.
The spacer ring 12 is a short tubular member, whose diameter is somewhat less than that of the skirt 18, so that they can be placed together with the ring abutting the concave surface of the skirt 18 (except where this is interrupted by the bulges 20).
The base plate 14 is a simple plate with a central aperture 24. The bolt 16 has a threaded shank 26 that passes freely through the aperture 24; and a head 28 which cannot.
The shank 26 can pass through the aperture in the skirt 18 and engage the thread in the bush 22.
The illustrated assembly is for providing a foot for a tubular post, e.g. for a road sign. It is for use with a tubular post in which the tubular cavity has a diameter similar to or slightly greater than the diameter of the skirt 18. For attachment of the assembly, the parts thereof are first connected together, by passing the bolt 16 through the aperture 24 in the base plate 14, placing the spacer ring 12 over it, and screwing the anchoring element 10 some way onto the shank 26. The assembly is then pushed into the post P (as shown in phantom in Fig. 1) until the post abuts the plate 14. The bolt 16 is then screwed further, so that it draws the bush 22 towards the plate 14. As the skirt 18 tends to flatten and expand radially, the periphery is driven against the interior of the post P.There is quite a large line of contact between the skirt 18 and the post P, so that a very firm fitting is achieved, without much force having to be applied to the bolt 16. The post P can then be stood up using the base plate 14. It is primarily intended that this should just be a temporary measure, while the post is set in concrete. But it could also be used on a longterm basis, particularly if the base plate 14 was made larger, possibly with a countersinking recess for receiving the head 28 of the bolt 16.
The firmness of the mounting depends on the material of the skirt 18, and its dimensions. Mild steel has been found to be very suitable, being cheap and easy to form by pressing. Stainless steel may be preferred for some purposes, and some plastics may be usable.
The illustrated configuration of skirt, with bulges 20, has been found particularly suitable for fitting to aluminium posts. With such a soft metal, the bulges provide points which dig in to provide regions of particularly strong connection. However, particularly for a steel post, it may be preferred to use a skirt 18 without bulges, so that it engages substantially uniformly around its perimeter, by forceful abutment.
For some purposes it may not be necessary to use a spacer ring 12, particularly if a skirt 18 with bulges 20 is being used. In that case, the shirt 18 is caused to expand radially by being urged against the base plate 14, so that the connection to the post is rather near the open end thereof. There is therefore some risk that this will be a less reliable connection, particularly since the end of the post may be deformed.
For greater security of connection, use may be made of spacer rings with greater axial length (or a plurality of standard ones). For still greater security, there may be two or more anchoring elements. Thus, with a bolt 16 with a longer shank 26, an assembly could consist of the base plate and bolt, a first spacer ring, a first anchoring element; a second spacer ring (which could rest on the top surface of the skirt 18 of the first anchoring element, or could be shaped to rest on the bush 22 thereof); and a second anchoring element.
Of course, this could be continued indefinitely.
Instead of the skirt being continuous, it could have radial "petals". But this is not preferred, since force applied to the post might bend a petal and loosen the connection. A robust alternative is shown in Figs. 3 and 4 which show embodiments in which the anchoring element 30 is a metal strip having a central portion 32 from which a pair of flange portions 34 extend downwardly and outwardly. The central portion 32 has a tapped aperture 36 for engaging a bolt 38.
Figs. 3 and 4 also show the use of base plates 40, 50 having a bulge 42 which projects into the mouth of a tubular post. This can serve as an integral spacer, and its edges can guide the spreading of the strip 30. Furthermore, since it is formed by bulging the material of the base plate, its underside provides a recess for the head of the bolt 38.
Fig. 4 shows a variant in which the main body 52 of the plate 50 is profiled, having wavy edges 54 to resist turning.
Claims (11)
1. An attachment for a tubular body comprising a radially expandable anchoring element for insertion into the cavity of a tubular body; and means for expanding it after insertion so as to lock it against the interior surface of the body.
2. An attachment according to claim 1 which comprises an abutment piece for abutting the body externally, adjacent the mouth of the cavity; and an elongate shank member for connecting the anchoring element and the abutment piece, the arrangement being such that the abutment piece is urgeable towards the anchoring element to tension the assembly.
3. An attachment according to claim 2 wherein the shank member has a threaded portion for threadedly engaging the anchoring element or the abutment piece, the arrangement being such that it is rotatable to urge said element and piece together.
4. An attachment according to claim 2 or 3 including a spacer between the anchoring element and the abutment piece.
5. An attachment according to any of claims 2 to 4 wherein the abutment piece has a projection for extending into the cavity of a tubular body.
6. An attachment according to any preceding claim wherein the anchoring element comprises a deformable convex member which, in use, is deformed towards planarity to urge said radial expansion.
7. An attachement according to claim 6 wherein said convex member comprises a skirt portion.
8. An attachment according to claim 6 wherein said convex member comprises a central portion from which a plurality of flange portions extend radially and axially.
9. An attachment for a tubular body substantially as any herein described with reference to and as illustrated in the accompanying drawings.
10. A post assembly comprising a tubular post and a foot assembly which comprises an attachment according to any preceding claim.
11. A method of connecting an attachment to a tubular body wherein the attachment is according to any of claims 1 to 9 and the method comprises locating the anchoring element within the tubular body and urging radial expansion of the element so that it is locked against the interior surface of the body.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB858519906A GB8519906D0 (en) | 1985-08-08 | 1985-08-08 | Attachment for tubular post |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8619366D0 GB8619366D0 (en) | 1986-09-17 |
| GB2179114A true GB2179114A (en) | 1987-02-25 |
Family
ID=10583484
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB858519906A Pending GB8519906D0 (en) | 1985-08-08 | 1985-08-08 | Attachment for tubular post |
| GB08619366A Withdrawn GB2179114A (en) | 1985-08-08 | 1986-08-08 | Attachment for tubular body |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB858519906A Pending GB8519906D0 (en) | 1985-08-08 | 1985-08-08 | Attachment for tubular post |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB8519906D0 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0594468A1 (en) * | 1992-10-23 | 1994-04-27 | H. GORDON & CO. LIMITED | Fixing device |
| EP2166281A3 (en) * | 2008-09-19 | 2010-11-24 | Zumtobel Lighting GmbH | Locking element for tubular bodies |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB390701A (en) * | 1932-08-06 | 1933-04-13 | Dunlop Rubber Co | Improvements in and relating to posts or supports, and sockets therefor |
| GB764637A (en) * | 1954-02-09 | 1956-12-28 | Legrand Pierre | Tube assembling device |
| GB1089768A (en) * | 1963-11-15 | 1967-11-08 | Desmo Ltd | Improvements relating to the connecting together of tubular members |
| GB1334547A (en) * | 1969-12-04 | 1973-10-17 | Waerner T | Anchoring devices |
| US4086840A (en) * | 1977-01-24 | 1978-05-02 | Kurlander Robert A | Hollow wall fastener |
| GB2006379A (en) * | 1977-08-10 | 1979-05-02 | Burchell B W | Connector for Tubular Members |
| GB1546432A (en) * | 1977-12-20 | 1979-05-23 | Crompton Nettlefold Stenman | Connectors |
| GB2022756A (en) * | 1978-06-05 | 1979-12-19 | Williams C I | Mine Bolt and Method of Installing a Mine Bolt in Rock Formation |
| GB1574978A (en) * | 1976-07-29 | 1980-09-17 | Maechtle F | Expanding wall plug |
| GB2061365A (en) * | 1979-10-26 | 1981-05-13 | Revvo Castor Co Ltd | Expanding plug castor |
| GB1602223A (en) * | 1978-05-25 | 1981-11-11 | Press Components Ltd | Tube connector |
| GB2137713A (en) * | 1983-04-08 | 1984-10-10 | Perard Torque Tension Ltd | Rock anchor bolt assembly |
-
1985
- 1985-08-08 GB GB858519906A patent/GB8519906D0/en active Pending
-
1986
- 1986-08-08 GB GB08619366A patent/GB2179114A/en not_active Withdrawn
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB390701A (en) * | 1932-08-06 | 1933-04-13 | Dunlop Rubber Co | Improvements in and relating to posts or supports, and sockets therefor |
| GB764637A (en) * | 1954-02-09 | 1956-12-28 | Legrand Pierre | Tube assembling device |
| GB1089768A (en) * | 1963-11-15 | 1967-11-08 | Desmo Ltd | Improvements relating to the connecting together of tubular members |
| GB1334547A (en) * | 1969-12-04 | 1973-10-17 | Waerner T | Anchoring devices |
| GB1574978A (en) * | 1976-07-29 | 1980-09-17 | Maechtle F | Expanding wall plug |
| US4086840A (en) * | 1977-01-24 | 1978-05-02 | Kurlander Robert A | Hollow wall fastener |
| GB2006379A (en) * | 1977-08-10 | 1979-05-02 | Burchell B W | Connector for Tubular Members |
| GB1546432A (en) * | 1977-12-20 | 1979-05-23 | Crompton Nettlefold Stenman | Connectors |
| GB1602223A (en) * | 1978-05-25 | 1981-11-11 | Press Components Ltd | Tube connector |
| GB2022756A (en) * | 1978-06-05 | 1979-12-19 | Williams C I | Mine Bolt and Method of Installing a Mine Bolt in Rock Formation |
| GB2061365A (en) * | 1979-10-26 | 1981-05-13 | Revvo Castor Co Ltd | Expanding plug castor |
| GB2137713A (en) * | 1983-04-08 | 1984-10-10 | Perard Torque Tension Ltd | Rock anchor bolt assembly |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0594468A1 (en) * | 1992-10-23 | 1994-04-27 | H. GORDON & CO. LIMITED | Fixing device |
| EP2166281A3 (en) * | 2008-09-19 | 2010-11-24 | Zumtobel Lighting GmbH | Locking element for tubular bodies |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8619366D0 (en) | 1986-09-17 |
| GB8519906D0 (en) | 1985-09-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |