EP1972723A2 - Couvercle de visite - Google Patents
Couvercle de visite Download PDFInfo
- Publication number
- EP1972723A2 EP1972723A2 EP08151789A EP08151789A EP1972723A2 EP 1972723 A2 EP1972723 A2 EP 1972723A2 EP 08151789 A EP08151789 A EP 08151789A EP 08151789 A EP08151789 A EP 08151789A EP 1972723 A2 EP1972723 A2 EP 1972723A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- inspection cover
- lid
- cover according
- frame
- annular portion
- 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- Withdrawn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
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1427—Locking devices
Definitions
- the present invention relates to an inspection cover.
- inspection covers are constituted generally by a perimetric frame to be embedded in the ground, to which a lid is hinged which is suitable to be arranged, in the closed configuration, within a complementarily shaped annular wall of the frame; an internal annular portion of the lid is designed to rest on a corresponding shoulder which protrudes inside the frame by way of the interposition of an annular sealing element.
- Such inspection covers are provided generally with reversible locking means for closing the lid onto the frame, so that the lid cannot open inadvertently, when for example a vehicle passes over it, and in any case to prevent anyone from being able to access it easily, if said inspection covers are of the type of the manhole type, i.e., having such dimensions as to allow a person to pass through them.
- the means for locking the lid to the frame are constituted generally by a screw-and-nut coupling, which is arranged in a recess below the walking surface and is therefore awkward to access and also slow to provide.
- latch-type locking means which are constituted by a pin which is inserted through the lid and has an actuation head which faces upward from the lid, at the level of the walking surface, and is available to an operator, and a retention element which protrudes radially from the pin below the lid and is positioned, when the lid is closed, below the shoulder of the frame on which the sealing element is arranged and against which the lid abuts; when the lid is closed, by turning the actuation head the lid is released to lift it or couple it to the frame.
- locking means are widespread and appreciated, they require the provision of a suitable contoured hole for the pin with a recess for the actuation head, and they also require an operation for assembling the retention element to the pin; although the drawbacks of the screw-and-nut system are solved, said locking means introduce the need to fit new components to the inspection cover, with consequent higher costs in terms of manufacture and labor.
- the aim of the present invention is to provide an inspection cover which solves the drawbacks shown by known types of inspection cover.
- an object of the present invention is to provide an inspection cover in which the closure of the lid onto the frame is immediate.
- Another object of the present invention is to provide an inspection cover whose locking means are easy and quick to open.
- Another object of the present invention is to provide an inspection cover whose mechanical and technical properties are at least equal to those of known types of inspection cover.
- Another object of the present invention is to provide an inspection cover which is simple to provide.
- Another object of the present invention is to provide an inspection cover which can be manufactured with known systems and technologies.
- an inspection cover which comprises a perimetric frame to be embedded in the ground and to which a lid is pivoted which is suitable to be arranged, in the closed configuration, within a complementarily shaped annular wall of the frame, an internal annular portion of said lid being designed to rest on a corresponding shoulder which protrudes within said frame by way of the interposition of an annular sealing element, said lid being closable onto said frame with reversible locking means, said inspection cover being characterized in that said reversible locking means are constituted by at least one elastically flexible bar which is formed on said internal annular portion of the lid and monolithically therewith, said at least one bar having a raised portion which is suitable to engage by snap action within a corresponding recess formed on the internal surface of said annular wall.
- an inspection cover according to the invention is generally designated by the reference numeral 10 in its first embodiment; such first embodiment of the invention is shown in Figures 1 to 3 .
- the inspection cover 10 comprises a perimetric frame 11 to be embedded in the ground and to which a lid 12 is pivoted which is suitable to be arranged, in the closed configuration, within a complementarily shaped annular wall 13 of the frame 11.
- An internal annular portion 14 of the lid 12 is designed to rest on a corresponding shoulder 15 which protrudes inside the frame 11 by way of the interposition of an annular sealing element 17.
- the lid 12 can be closed onto the frame 11 by way of reversible locking means.
- Such reversible locking means are constituted by two bars 18 and 19, which are elastically flexible and are formed on the internal annular portion 14 of the lid 12 and monolithically therewith.
- the bars 18 and 19 each have a raised portion 20 and 21 respectively, which is suitable to engage by snap action within a corresponding recess, 22 for a first raised portion 20 and 23 for the second raised portion 21; the recesses 22, 23 are formed on the internal surface 16 of the annular wall 13.
- the two elastic bars 18 and 19 are arranged symmetrically and tangentially with respect to the annular portion 14, and the respective raised portions 20 and 21 are provided on the free ends thereof.
- Each raised portion 20 and 21 has a thickness which decreases continuously from the outside toward the inside of the lid 12, as can be seen clearly in the sectional view of Figure 3 , so as to form an inclined pusher surface when the raised portion 20 and 21, during the closure of the lid 12, comes into contact with the outer edge 24 of the annular wall 13, which produces the inward flexing of the elastic bar 18 and 19 of which the raised portion 20 and 21 is a part.
- Each recess 22 and 23 is contoured so as to form a guide for the upward exit of the corresponding raised portion 20 and 21.
- Such guiding element as exemplified in Figure 3 for a first recess 22, is formed by the upper face 22a of the recess 22, which is inclined so as to allow the sliding thereon, so as to exit from said recess, of the corresponding raised portion 20; the same applies also to the second recess 23 and the respective raised portion 21.
- each one of the elastic bars 18 and 19 is formed on the internal annular portion 14 by a substantially U-shaped slot 25 for the first bar 18 and 26 for the second bar 19; the slots 25, 26 are open on the solid wall which constitutes the internal annular portion 14.
- Such solid wall which constitutes the internal annular portion 14 therefore has a continuous and uninterrupted lower edge 14a which abuts against the annular sealing element 17, which also is continuous.
- a compartment 28 for the insertion of a lever-like tool for opening the lid 12 is formed on the annular wall 13 of the frame 11, between the two recesses 22 and 23; a grip tooth 29 for the tool faces the compartment 28 from the lid 12.
- the perimetric frame 11 has, on its perimetric resting base 30, openings 31 for optimizing the grip of the grout.
- the annular sealing element 17 is a noise-damping and oscillation-preventing gasket, which also acts as an odor-tight seal, if the inspection cover 10 according to the invention is provided, as in the example described and shown here, with such a shape and dimensions as to be of the manhole type, and is used to close accesses for sewer inspection.
- the inspection cover 10 according to the invention can be provided preferably by using spheroidal cast iron, but also by using any other equivalent material.
- the lid 12 pivoted to the frame 11 with a per se known articulation, to enter by gravity the annular wall 13 of the frame 11; the passage of the raised portions 20 and 21 against the annular wall 13 causes the elastic bars 18 and 19 to flex toward the inside of the lid 12 and then return to the initial position when the raised portions 20 and 21 snap into the respective seats 22 and 23 provided on the wall 13.
- the lid 12 ends its stroke in abutment against the annular sealing element 17.
- a lever-like tool for example a bar or a crowbar, in the compartment 28, and act so that the end portion of the bar arranged inside the compartment 28 rests on one side against the upper edge of the compartment 28 while it pushes with the end against the tooth 29 which protrudes from the lid 12.
- a particular advantage provided with the inspection cover 10 according to the invention resides in that the lower edge 14a of the annular portion 14 of the lid is continuous, and when the lid is closed, it presses against the equally continuous sealing element 17.
- each one of the elastic bars 118 and 119 is formed on the internal annular portion 114 of the lid 112 by a substantially L-shaped slot 125 and 126 which is open onto the solid wall which constitutes the internal annular portion 114; the L-shaped slot 125 and 126 protrudes from the lower edge 114a of the latter.
- the solid wall that constitutes the internal annular portion 114 has a lower edge 114a with two discontinuous portions whose dimensions are between 5 and 15 mm at the L-shaped slots 125 and 126 and abuts against the continuous annular sealing element 117.
- the seal formed by the closure of the lower edge 114a on the sealing element 117 is therefore slightly inferior to the one achieved with the first embodiment 10 of the inspection cover described above, but is in any case better than similar known types of inspection cover, which generally have closure means which are structured so that the sealing element is interrupted and therefore the ability to retain odors is inferior.
- the present invention provides an inspection cover in which the closure of the lid onto the frame is immediate, since it is sufficient to lower the lid 12 onto the frame 11 to achieve the automatic snap insertion of the raised portions 20 and 21 in the respective seats 22 and 23.
- the present invention provides an inspection cover whose locking means are easy and quick to open, since a tool with which to act as a lever, as described above, is sufficient.
- the invention provides an inspection cover whose mechanical and technical properties are not inferior to those of known types of inspection cover.
- the inspection cover according to the invention allows to achieve an optimum hermetic closure in order to prevent the escape into the environment of the odors and stenches that rise for example from a sewer system inspection well to which it is applied.
- the materials employed may be any according to requirements and to the state of the art.
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Sewage (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Measurement Of Radiation (AREA)
- Seal Device For Vehicle (AREA)
- Glass Compositions (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITPD20070101 ITPD20070101A1 (it) | 2007-03-21 | 2007-03-21 | Chiusino perfezionato |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1972723A2 true EP1972723A2 (fr) | 2008-09-24 |
EP1972723A3 EP1972723A3 (fr) | 2009-04-01 |
Family
ID=39402782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08151789A Withdrawn EP1972723A3 (fr) | 2007-03-21 | 2008-02-22 | Couvercle de visite |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1972723A3 (fr) |
IT (1) | ITPD20070101A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010123217A2 (fr) * | 2009-04-20 | 2010-10-28 | Song In Jin | Ensemble tampon de regard |
ITVI20100092A1 (it) * | 2010-04-01 | 2011-10-02 | Pro S R L Sa | Dispositivo di chiusura per pozzetti e simili. |
CN112177053A (zh) * | 2020-09-30 | 2021-01-05 | 萧县冠达新型墙体材料有限责任公司 | 一种安全防盗且具有防异味功能的市政井盖 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL83644C (fr) * | 1900-01-01 | |||
NL7905854A (nl) * | 1979-07-30 | 1981-02-03 | Raatjes Egbertus Sijbolt | Afdekking. |
FR2711688B1 (fr) * | 1993-10-26 | 1995-12-29 | Pont A Mousson | Regard de chaussée à verrouillage par rotation du tampon. |
DE20001719U1 (de) * | 2000-02-01 | 2000-03-16 | Betonwerk Und Eisengieserei Be | Schachtabdeckung |
DE20008820U1 (de) * | 2000-05-16 | 2000-08-17 | Heinrich Meier Eisengieserei G | Schachtanordnung |
DE20010316U1 (de) * | 2000-06-08 | 2001-10-18 | Broermann Rita | Rinnenelement |
DE202005010323U1 (de) * | 2005-07-01 | 2005-09-15 | Heinrich Meier Eisengieserei G | Schachtabdeckung mit dämpfender Einlage |
-
2007
- 2007-03-21 IT ITPD20070101 patent/ITPD20070101A1/it unknown
-
2008
- 2008-02-22 EP EP08151789A patent/EP1972723A3/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
None |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010123217A2 (fr) * | 2009-04-20 | 2010-10-28 | Song In Jin | Ensemble tampon de regard |
WO2010123217A3 (fr) * | 2009-04-20 | 2011-01-06 | Song In Jin | Ensemble tampon de regard |
ITVI20100092A1 (it) * | 2010-04-01 | 2011-10-02 | Pro S R L Sa | Dispositivo di chiusura per pozzetti e simili. |
EP2372028A1 (fr) * | 2010-04-01 | 2011-10-05 | S.a.pro. S.r.l. | Couvercle pour un regard de chausseé |
CN112177053A (zh) * | 2020-09-30 | 2021-01-05 | 萧县冠达新型墙体材料有限责任公司 | 一种安全防盗且具有防异味功能的市政井盖 |
CN112177053B (zh) * | 2020-09-30 | 2021-11-19 | 重庆洁环水处理设备有限公司 | 一种安全防盗且具有防异味功能的市政井盖 |
Also Published As
Publication number | Publication date |
---|---|
EP1972723A3 (fr) | 2009-04-01 |
ITPD20070101A1 (it) | 2008-09-22 |
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