ANCHORING BASE FOR ROAD SIGN POSTS AND SIMILAR

Abstract: Anchoring base for road sign posts and similar, its object being to provide a post of such kind, which is easy to mount, and which easily can be remounted after the post has been prostrated, by way of example having been run onto by a vehicle. The anchoring base comprises an upwards cup-shaped bottom component (1, 21) and a weight (2, 22), which in mounted condition of the post (3, 23) is placed in the cavity of the bottom component, said weight in its turn supporting the post in question. The weight and the bottom component are in between them held together by means of a vertical breakable connecting pin (10, 30) inserted into in between them coaxially located cavities of the two components.

Description: Anchoring base for road sign posts and similar The present invention relates to a base for road sign posts,and similar. It is a principal object of the invention to provide a base of the kind mentioned, which is easy to erect, either it is intended for permanent or temporary use. It is further an object of the invention to provide a base, which is built in such a manner that as little damage as possible will be caused by a vehicle running into the post supported by the base. This object is reached by means of the inven¬ tion, which essentially is characterized by the anchoring base comprising an upwards open cup-shaped bottom component and in mounted condition of the post a weight housed in the hollow space of said bottom component, which weight in its turn supports the post in question, the weight and the base being mutually connected by means of a breakable connecting pin inserted into mutually coaxially located holes of said , two components. The invention will be described in the follow- ing, reference being made to the accompanying drawings, in which Fig. 1 is a cross-sectional view of a base made in accordance with a first example of embodiment of the invention, Fig. 2 is a schematic view of the same cross- section showing the post in different prostrating stages, Fig. 3 is an exploded view of the same base, Fig. 4 is a cross-sectional view correspond¬ ing to the one of Fig. 1 through the mid portion of a base made according to a second example of embodiment of the invention, Fig. 5 is a cross-sectional view correspond¬ ing to the one of Fig. 4 through a base according to a third example of embodiment. Fig. 6 is a view of a detail illustrated in Fig. 4 and seen in direction to its underside, and Fig. 7 is a top view of the same detail ill strated in Fig. 4. The base illustrated in Figs. ;L-3 and made in accordance with the invention comprises a bottom compon ent 1, a top component 2 of heavy material acting as a wei and a post 3 supported by said top component, the lower po ion of said post being shown in the drawings. The weight 2 is provided with a central hole, which substantially exhib the same diameter as the outer diameter of the post 3. The weight 2 is held to the post 3 by means of radially inter¬ spaced pins 4, which traverse the weight 2 and radial bore made in the post 3. A body 5 of annular shape is provided the interior of the post at its lower end, into which body the pins 4 also extend. The annular body exhibits a centra bore, in which a centre-sleeve 10 is in the mounted condit inserted, said centre-sleeve also extending down through a corresponding bore of the bottom component 1. The weight 2 rests in a recess 6 in the bottom component 1. This recess exhibits a comparatively flat bottom portion 6a, a sloping bottom portion 6b, which has the form of the convex surfac portion of a frustrum of a cone, and a substantially verti top portion 6c. The semispherical weight 2 exhibits a top which is substantially extending in radial .direction relat to the post 3. In order to impede that rainwater and dirt will penetrate into the recess 6 of the bottom component, the interspace between the weight 2 and the wall portion o the bottom component 1 is bridged by a lid 7, in cross-sec exhibiting .the form of an inverted U, the inner flange 7a said lid extending down into an annular groove in the weig 2 and the outer flange 7b of said lid extending downwards along the outside 8 of the bottom component. A central bor 9 is made in the bottom component and extends coaxially to the sleeve 10, said bore in the first place being intended for wire laying, but which of course also can serve the purpose of a drainage means. The bore 9 exhibits a diameter e which is smaller than the one of the bore, to which it con- nects, and in which the sleeve.10 is. inserted. By. this arrange-- ment a shoulder is formed at the passage between the two bores, against which shoulder the lower end of the sleeve rests. The bottom component 1 is suitably made of a compara¬ tively heavy material, by way of example such material as concrete, and may either be cast in position in the road bed or be provisionally placed on top of the same. The weight 2 is likewise suitably made of concrete. It can of course also be imagined to make the weight of any other suitable material. The sleeve 10 forms a breakable connecting pin between the weight 2 and the bottom component 1, and if wire laying is not desired, it can be made of solid material. However, the pin 10 shall be so weak that it is broken off, when the post 3 is subjected to a comparatively violent force, which is for example the case, when a vehicle is running into it. The spherical outer surface of the weight 2 will slide against the sloping bottom portion 6b of the recess 6 and occupy a position indicated with continuous lines in Fig. 2, in which position the post 3 rests against the upper edge portion of the bottom component. If the vehicle having run into the post should continue its movement and tend to carry along the post in its travelling direction, the top side 2a of the weight 2 will strike at the surface 6c of the bottom component, whereby the weight is prevented from falling out of said bottom component. If the movement of the vehicle should continue past this position, the breakable pins 4 will e shorn off, and the vehicle only carries along the post 3. Thanks to the cooperation between the weight 2 and the recess 6 a possibly existing wiring in the post will remain intact in case the post is only pivoted down and not carried along bringing in its train that it emerges from the weight 2. In order to prevent an unauthorized removal of the post from its base, the sleeve 10 can suitably exhibit a comparatively $ EJTfr> O PI r great vertical extension, so that the post has to be lift high up in order to permit being carried away from the pi The mounting of a post according to the ki described above can by way of example take place in such 5 way that the bottom component 1 is placed on top of the ro bed or is cast into the same. Thereafter the post with its weight 2 in mounted condition can be threaded over the sle 10. The base illustrated in the Figs. 4, 6 and 10 differs from the base shown in the preceding figures, viz. principally with respect to for one thing the central slee 30, which connects the post 23 and the weight 22 with the bottom component 21, and for another thing the gripping me of the sleeve. 15 The weight 22 in a central position exhibit a sleeve 41, which is embedded or in any other suitable ma fastened to the same, said sleeve suitably being made of m or plastics. The inner diameter of the sleeve 41 correspon to the outer diameter of the post 23, which is designed as 20 a tube. The sleeve 30 exhibits two end portions 30a and 30 with different diameters and are mutually connected via an intermediate portion 30c, which forms a radially projectin flange. According to Fig. 4 the outer diameter of the uppe sleeve portion 30a corresponds to the inner diameter of th 5 tubular post 23. The lower portion 30b of the sleeve is su ably made with a diameter, which corresponds to some other dimension of tubular posts in the market, by way of exampl as will be described in connection with Fig. 5. Both end portions of the sleeves 30a and 30b are provided with hook 0 shaped tongues 42 and 43 respectively and interspaced roun the periphery of the sleeve, each one of said tongues exhi ing a nose 42a and 43a respectively projecting outside of periphery of the sleeve, said nose forming a shoulder 42a* and 43a' respectively facing away from the flange 30c. In 5 the example of embodiment shown the tongues are cast of th same material as and integrated with the other part of the O PI sleeve 30. The end portions 30a and 30b near to the flange exhibit peripherical cuts 44 and 45 respectively, which con¬ stitute fraction indications, by means of which the rupture point on the-sleeve, when the. pos ..is prostrated, can be determined. In the central hole 29 in the bottom component 21, which hole is comparatively large compared with the central hole 9, which is shown in Fig. 1, a filling ring 46 is pressed in, the inner diameter' of which corresponds to the outer diameter of the sleeve portion 30b. The filling ring in its upper portion exhibits a chamfer 46a. The end portions of the sleeve 30 are provided with axially extend¬ ing slits 47, 49, which extend from the free ends to the cut located at the flange. In the wall of the tubular post 23 engagement openings 48 are made, which are interspaced along the periphery of the tube in the same manner as the engaging tongues 42 and at a distance from the lower end of the tube 23, which corresponds to the distance between the flange 30a and the shoulder 42a' of the engaging tongues 42. The mounting of the post is suitably carried out in such a way that it is inserted into the weight 22 reaching to the position illustrated in Fig. 4, whereafter " the sleeve 30 is inserted so far that the engaging tongues 42 snap in in the corresponding engaging recesses 48. The flange 30c is then lying against the lower terminal edge of the tube 23 and the weight 22. The filling ring 46 has suitably before¬ hand been pressed-in into the central hole 29 of the bottom component 21. When the post together with the weight 22 and the sleeve 30 are brought down into the bottom component, and the end position 30b of the sleeve is through the center- hole 46a introduced into the position shown in Fig. 4, the nose portions 43a of the engaging tongues 43 snap in below the filling ring, whereafter the post is firmly held in up¬ right position. When the post is subjected to a prostrating movement, which by way of example can occur, when a vehicle * K E Ayr OMPI is running into it, the lower sleeve portion 30b below the flange 30c is broken off at the point of attenuation. Due to the longitudinally extending slits the components form¬ ing part of the sleeve portion in question fall down, so that their engagement ceases and they can be removed to permit the insertion of a new sleeve in order to again mount the post. The peripherical portions of the bottom component 21 and the weight 22, not shown in Fig. 4, can have a similar design as the corresponding parts in Figs. 1 and 2. By this arrangement a counter-acting force is created against a run-down post being carried along by the vehicle, which has run into it, the performance being similar to the manner described in connection with the previous example of embodiment. Because of the fact that in connection with light pulling forces working on the post 23, after it has been prostrated, the flange still lies " against the underside of the weight, the post and the weight are by means of the remaining sleeve portion kept together. Only in connection with a more powerful pull at the post, also the sleeve will burst at the point of attenuation located above the flange, and the post will be drawn out of the weight. A tubular post 23 is illustrated in Fig. 5 / and its inner diameter corresponds to the outer diameter of the thinner portion of the sleeve 30 in Fig. 4. In this case the sleeve has been turned upside down relative to Fig. 4, and a thinner filling ring 46 has been pressed-in in the bore 29 of the bottom component 21. Thus, one and the same sleeve 30 can be used for two different diameters of the tubular post 23. Corresponding parts have been give the same indications of reference in Fig. 4 and Fig. 5. The invention is not limited to the anchori base described above and illustrated in the drawings by wa of example only, but can be varied as to its details withi the scope of the following claims without therefore depart from the fundamental idea of the invention. The weight ind ^JK_EA O PI IPO cated with 2 needs not to be made of as heavy material as concrete or metal. However, it is important that it does not fall out of the recess of the bottom component, when the post is rapidly prostrated. The invention can of course be applied to all kinds of posts, which may be subjected to violent lateral stresses such as for example being run into by a vehicle.

Claims: C l a i m s 1. Anchoring base for road sign posts and similar, c h a r a c t e r i z e d b y comprising an upwards cup-shaped bottom component (1, 21) and one in mounted condition of the post in the cavity of the bottom component placed weight (2, 22) , which in its turn suppor the post etc. in question, the weight and the base being held together mutually by means of a vertical breakable connecting pin (10, 30) inserted into coaxially located cavities made in the two components. 2. Anchoring base according to claim 1, c h a r a c t e r i z e d b y the cavity of the bottom component as well as the one of the weight being symmetri with respect 'to rotation and the connecting pin being cen rally placed in these components. 3. 'Anchoring base according to claim 1 or 2, c h a r a c t e r i z e d b y the inside of the bottom component (1, 21) being adapted to form shoulders coopera ing with the weight {2, 22) , when the connecting pin (10, 30) is in broken condition, and the post is in a prostrat condition. 4. Anchoring base according to claim 3, c h a r a c t e r i z e d b y the post (3, 23) being connected with the weight (2, 22) by a breakable coupling means. 5. Anchoring base according to claim 4, c h a r a c t e r i z e d b y the breakable coupling me comprising radial pins (4) . 6. Anchoring base according to anyone of the preceding claims, c h a r a c t e r i z e d b y. the wei (2, 22) substantially being semispherical and with its sp cal convex surface resting against a sloping bottom porti the recess of the bottom component (1, 21) . 7. Anchoring base according to anyone of the preceding claims, c h a r a c t e r i z e d b y the wei -£\JRE_A OMPI (2, 22) exhibiting a top side substantially extending in radial direction to the post, and by the base exhibiting an upper edge portion with a steeply sloping, preferably substantially vertical, inside. 8. Anchoring base according to claim 4, c h a r a c t e r i z e d b y the breakable means comp¬ rising a breakable sleeve (30) , of which one end portion extends into the lower end portion of the post (23) , and the other portion of which sleeve extends into a central bore (29) in the bottom component. 9. Anchoring base according to claim 8, c h a r a c t e r i z e d b y the sleeve exhibiting a flange-like intermediate portion (30c) , which interconnects its two end portions (30a, 30b) , and a peripherical rupture indication (44, 45) on at least one side of the flange-like intermediate portion, which in mounted condition forms a shoulder against the terminal edges of the tubular post (23) as well as of the weight (22) . 10. Anchoring base according to claim 8 or 9, c h a r a c t e r i z e d b y the sleeve or corresponding cavities engaged by the same exhibiting laterally spring biased snap-in hooks (42, 43) , and by the cavities and the sleeve respectively exhibiting snap-in recesses (48) cooper¬ ating with said snap-in hooks. ll. Anchoring base according to claim 9 or 10, c h a r a c t e r i z e d b y the end portions (30a, 30b) of the sleeve (30) being split. "£JRE OMPI

Inventors: BITVAI T
Applicants: BITVAI T, MIENK AB
Application year: 1980
Main classification: E01F9
IPC codes: E01F9, E04H12