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Title:
RESILIENT POST SUPPORT MODULE
Document Type and Number:
WIPO Patent Application WO/2019/030295
Kind Code:
A4
Abstract:
The invention relates to a resilient support module for posts supporting a traffic sign, the support module containing a lower attachment module (20) for connecting to a module receiving bore, an upper attachment module (10) for attachment to the post, a connecting member (40) extending through bores in said upper and lower attachment modules and a spring (49) surrounding a part of said connecting member. The connecting member is arranged so that a deflection of the upper attachment module (10) causes a rotation of the connecting member (40) which is limited either by a sideways projecting element (44) contacting the inner surface of the through bore (23) of the lower attachment member (if the diameter of the projecting element is equal or greater than 50% of the diameter of the bore in the lower attachment module) or the end of the connecting member (40) contacting the inner surface of the through bore (23) of the attachment member (if the diameter of the projecting element is less than 50% of the diameter of the bore in the lower attachment module).

Inventors:
STRANDBERG, Lars Gunnar Ragnar (Aftonvägen 4A, Karlstad, 655 92, SE)
Application Number:
EP2018/071533
Publication Date:
May 09, 2019
Filing Date:
August 08, 2018
Export Citation:
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Assignee:
SKYDD100 AB (Aftonvägen 4A, Karlstad, 655 92, SE)
International Classes:
E01F9/685; E01F9/627
Attorney, Agent or Firm:
HYNELL INTELLECTUAL PROPERTY AB (138Järnvägsgatan 2, HAGFORS, HAGFORS, 683 23, SE)
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Claims:
AMENDED CLAIMS

received by the International Bureau on 22 March 2019 (22.03.2019)

1. A resilient support module for mounting a post (1) in a normal orientation in a support module-receiving bore (31) for a post, comprising:

a lower attachment member (20) insertable into a support module receiving bore (31) having an inner wall (31), said lower attachment member comprising a body of maximum diameter (Dlam) with an upper end surface (21) and a lower end surface separated by a substrate of thickness (S) and having a longitudinally extending through bore (23) with an inner wall; an upper attachment member (10), of length U, insertable into a bore of a post and/or attachable to a post; said upper attachment member comprising a longitudinally extending through bore (16);

a longitudinally extending connecting member (40) formed as a rod and extending through said through bores and comprising an upper locking element (42) preventing the connecting member from being withdrawn from below from the upper attachment member and a lower locking element (44) for preventing the connecting member from being withdrawn from above from the lower attachment member;

the connecting member is provided with one or more concentrically-arranged compression springs (45; 49; 49') to provide a biasing force to the support module to keep it in the normal orientation, wherein said one or more compression springs are located between said upper locking element (42) and said lower locking element (44);

characterized in that:

the connecting member is made of mild steel,

the connecting member comprises a sideways projecting element for contacting the inner wall of the lower attachment member and/or support module-receiving bore;

the longitudinal length of the connecting member (40) is greater than that of the sum of the total length of the upper attachment member (10) and the thickness (S) of the substrate; and, the lower end of the connecting member extends a distance L from the lower end surface of lower attachment member (20), wherein:

i) the distance length L is equal to or greater than 150% of the diameter of the lower attachment member (Dlam) and equal to or less than ten times the diameter of the lower attachment member, more preferably length L is equal to or greater than twice and equal to or less than eight times the diameter of the lower attachment member and most preferably equal to or greater than three times and less than or equal to five times the diameter of the lower attachment member when the connecting member comprises a sideways projecting element with a diameter which is equal to or less than 50% of the diameter of the lower attachment module; or 22

ii) the distance length L is equal to or greater than 50% of the diameter of the lower attachment member (Dlam) and equal to or less than 150% of the diameter of the lower attachment member when the connecting member comprises a sideways projecting element with a diameter which is greater than 50% of the diameter of the lower attachment module,

and arranged such that the force resisting deflection of the upper attachment member from the normal orientation is absorbed:

first by elastic deformation of said one or more compression springs until the lower end of the connecting member, or sideways projecting element contacts the inner wall of the lower attachment member and/or the inner wall of the support module-receiving bore;

then by elastic deformation of the connecting member after the lower end of the connecting member, or sideways projecting element contacts the inner wall of the lower attachment member and/or the inner wall of the support module-receiving bore; and,

subsequently by plastic deformation of the connecting member.

2. A resilient support module according to claim 1 characterized in that the rod of the connecting member (40) includes a threaded rod and an upper locking nut (42) engaging a threaded upper part of the rod and a lower locking nut (44) engaging a threaded lower part of the rod.

3. A resilient support module according to claim 2 characterized in that the connecting member (40) includes a washer spring (45) and a lower washer member (43) arranged concentrically of said rod and located between the lower locking nut (44) and lower attachment member (20). 4.A resilient support module according to any of the previous claims wherein said upper attachment module has a lower surface (11) in contact with the upper end surface (21) of the lower module.

5. A resilient support module according to a claim 4 wherein one of the upper facing surface (21) or the lower surface (11) has a convex surface (CF) symmetrically arranged around the connecting member (40), and the other upper or lower surface has a flat surface (FF), allowing the convex surface to roll over the flat surface when post (1) is deflected from its normal orientation. 6. A resilient support module according to claim 5 characterized in that the convex surface (CF) has a hemi-spherical form with a constant radius over the entire convex surface. 23

7. A resilient support module according to claim 6 characterized in that said constant radius corresponds to half of the diameter (Dlam) of the lower attachment module.

8. A resilient support module according to claim 5 characterized in that the convex surface (CF) has a flat transition surface (1 Γ) closest to the connecting rod (40).

9. A resilient support module according to any of the previous claims characterized in that the connecting member has a diameter equal to or greater than 10% and equal to or less than 25% of the diameter of the lower attachment module.

10. A resilient support module according to any of the previous claims characterized in that said connecting member is being made of a mild steel allowing plastic deformation and elongation of the connecting member by an amount preferably equal to or greater than 8 %, and more preferably equal to or greater than 10 %, before breaking.

11. A resilient support module according to any of the previous claims characterized in that it is provided with means for providing an asymmetric response to tilting forces comprising: i) a kink or bend in the length L of the connecting member; and/or,

ii) an asymmetrical sideways projecting element on said connecting member; and/or, iii) an asymmetrical positioning of the through bores.

12. A resilient support module according to any of the previous claims characterized in that said mild steel is preferably mild steel from classes 8.8 to 12.9 of ISO 898-1, most preferably mild steel from classes 8.8 to 9.8 of ISO 898-1.

13. System for resiliently mounting a post comprising a post, a support module-receiving bore and a support module according to any of the previous claims wherein the lower attachment module is received in the support module-receiving bore and the upper attachment module is received in, or attached to, the post.