WO2021215990A1 - Capuchon protecteur - Google Patents

Capuchon protecteur Download PDF

Info

Publication number
WO2021215990A1
WO2021215990A1 PCT/SE2021/050368 SE2021050368W WO2021215990A1 WO 2021215990 A1 WO2021215990 A1 WO 2021215990A1 SE 2021050368 W SE2021050368 W SE 2021050368W WO 2021215990 A1 WO2021215990 A1 WO 2021215990A1
Authority
WO
WIPO (PCT)
Prior art keywords
protective cap
protective
cap
mounting sleeve
waist
Prior art date
Application number
PCT/SE2021/050368
Other languages
English (en)
Inventor
Stefan Andersson
Original Assignee
Eurospacers Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Eurospacers Ab filed Critical Eurospacers Ab
Priority to EP21793022.1A priority Critical patent/EP4139534A4/fr
Publication of WO2021215990A1 publication Critical patent/WO2021215990A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/161—Protective caps for the ends of reinforcing bars
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
    • E04G21/3252—Protections, e.g. cover, caps, against impaling on starter reinforcement bars

Definitions

  • the invention relates to a protective cap intended to be mounted on reinforc ing bars or other metal bars.
  • the field to which the invention substantially relates is building sites, where reinforcing bars are handled. Already at delivery or alternatively when the reinforcing bars are sheared/cut at a work place to obtain the right length, they get a sharp shearing/cutting surface that can be both pointed and/or sharp like a knife edge. Protruding, sheared and/or upright metal bars consti tute a risk of personal injury during handling, or merely during various activi ties around them, if the ends of the bars are not encapsulated. This could be cuts and/or sticking injuries.
  • plastic caps are currently used, which are mounted over the pointed and/or sharp end.
  • Such caps can have multiple appearances with the common fea ture that they can encapsulate the pointed and/or sharp end. They should also ensure that they remain on the bars in the case of e.g. strong wind or merely while the work is being performed.
  • a common design is a cap with an inner straight and tubular portion, provided with some type of helical, longitudinal or transverse inner ribs, which can be resilient and fold aside, when the caps are mounted to the reinforcing bars, without the ribs coming loose.
  • a cap is obtained that can be used for various dimensions of bars and at the same time, the resilient ribs lock the cap in place on the bar within the specific bar dimension range, for which the cap is dimensioned.
  • Another common appearance to handle various dimensions of bars can be that the cap is provided with a resilient waist.
  • the body of the cap between the upper portion/cap and the lower portion/entrance for the reinforcing bar is provided with longitudinal slits and is tapered from both directions to be able to be resilient and expand to differ ent extents depending on the bar dimension used.
  • the upper portion/head of the cap can externally be either straight, somewhat rounded or be provided with a wider surface like a mushroom head. This means that the head has a larger outer diameter than the body diameter of the cap itself.
  • the object of such a wider head is substantially to distribute the force on a larger surface, or merely not aggravate puncture damage if a person trips over an upright reinforcing bar.
  • the size of the head has no significant importance. It is rather the shell thickness of the cap that is most important or merely the material of the cap.
  • the material of the caps can vary, but they are usually made of polyethylene or polypropylene.
  • metal discs can be placed or cast inside the caps to ensure that a reinforcing bar cannot cut through the plastic of the head.
  • caps those with a waist, the hourglass model.
  • the waist is often placed in the middle of the cap and is outwardly resilient to be able to be useful for various dimensions of bars. They can be provided with a broadened head or just be terminated without broadening.
  • a common feature for these and other caps is that the user usually grips the head of the caps for application/attachment onto the bar. They grab it and press the cap over the bar by pushing on the head.
  • Reinforcing bars are often provided with external combs for increased bond ing and fixing in the concrete when the reinforcement is cast.
  • a normal di mension range for the protective caps is that they must be able to cover rein forcing bars from 6 mm up to 16 mm. Including combs, this in practice means that the reinforcing bars are approx. 7-19 mm in their largest outer diameter.
  • the upper and terminating portion of a cap internally at the head should have a diameter of 19 mm, while it is advantageous if the nar rowest portion of the waist has a diameter of 6 mm or slightly less. In this manner, the fixation of the resilient waist around all dimensions in the range is ensured, and at the same time it is ensured that the cap can actually also enclose the largest bars in the dimension range.
  • caps with a waist can be difficult to mount on the largest dimensions of reinforcing bars.
  • the outer wall of the cap is completely circumferential and without openings.
  • These caps have a rigid body without a resilient waist, and there is no risk that any reinforcing bar can protrude through the side wall at application.
  • the body/side wall of caps with a resilient waist are instead slit, merely to be able to be resilient, but both types can be provided with a head that is larger than the diameter of the body of the cap or only with the same diameter as the body.
  • a traditional cap with a circumferential side wall without holes or slits can ei ther be pressed or hammered onto the reinforcing bar.
  • the inner locking and folding ribs of the cap are cast together with the inner top surface and inner circumferential side wall of the cap.
  • it is possible to circumvent this by making small through-going open ings in the head of the cap right above the inner ribs, but then the protective function of the cap is reduced or eliminated partially or fully.
  • There is a risk that small and narrow dimensions of reinforcing bars are pressed out through these openings in the head which may lead to serious personal injury or even risks being fatal, if a person trips over them.
  • a solution to this problem is protective caps with a waist, where in the waist more easily springs aside, when it is applied on thicker dimen sions.
  • protective caps with a waist also have disadvantages that may lead to an increased risk of personal injury in use compared with straight caps.
  • the circumferential side wall is slit in the longitudinal direction of the cap, often 6 relatively long slits that are 2-3 mm wide for caps in the dimension range of 6-16 mm, there is a risk that narrow bars, e.g. 6 mm, can protrude through some of all these slits during mounting.
  • Another disadvantage is that the waist can close when the cap is to be mounted on a reinforcing bar hav ing a thicker dimension, instead of being outwardly resilient, which means that a stronger force is necessary for mounting the cap. This can lead to in creased risk of shearing injuries, if one slips.
  • An object of the invention is therefore to provide an improved protective cap for reinforcing bars. Another object of the invention is to provide a mounting sleeve for a protective cap. Another object of the invention is to provide a method for mounting such a protective cap.
  • the object of the invention is solved in that the lower portion comprises an outwardly projecting lower bear ing surface arranged on a lower flange, where the inner diameter of the lower flange is equal to or larger than the diameter of the protective surface of the upper portion.
  • a protective cap which can be mounted on reinforcing bars with various dimensions in a sim ple and more personally safe manner.
  • the protective cap is provided with a protruding flange on its lower portion.
  • the protective cap can be mounted in a simple and safe manner by the protective cap being pulled onto the reinforcing bar in stead of being pushed on it.
  • the result is that the waist is stretched out and expands instead of being squeezed together and close, which it does if the cap is pressed/hammered onto the reinforcing bar.
  • the protective cap can either be pulled on to the reinforcing bar by manual power by a worker pulling on the protective cap, or the protective cap can be mounted by means of a mounting sleeve.
  • the mounting sleeve is positioned against the lower bear ing surface, and a force is applied on the upper edge of the mounting sleeve, which drives the protective cap onto the reinforcing bar.
  • Fig. 1 shows a first embodiment of a protective cap according to the inven tion
  • Fig. 2 shows a second embodiment of a protective cap according to the invention
  • Fig. 3 shows a third embodiment of a protective cap according to the inven tion
  • Fig. 4 shows a mounting sleeve according to the invention.
  • Fig. 1 shows a first example of a protective cap 1 according to the invention.
  • the protective cap has an upper portion 2, a lower portion 3 as well as a waist 4 arranged between the upper portion and the lower portion.
  • the upper portion is closed and is provided with an upper protective surface 6, which is intended to cover the end of the reinforcing bar, so that damages are avoid ed.
  • the edges of the upper protective surface may be somewhat rounded.
  • the interior side of the protective surface is intended to abut against the end of the reinforcing bar, and can be provided with a metal disc to increase the strength and resistance of the upper protective surface.
  • the protective cap is provided with slits 7 that enable the waist to be outwardly resilient when the protective cap is mounted on reinforcing bars in the upper range of the di mensions, for which the protective cap is intended.
  • the pro tective cap is intended to be mounted on reinforcing bars in the dimension range of 6 to 16 mm.
  • the lower portion 3 of the protective cap 1 is provided with a protruding flange 5, which in the shown example extends around the entire circumfer ence 9 of the protective cap.
  • the flange 5 is in the shown example arranged at the bottom of the lower portion, but it could also be arranged slightly higher on the lower portion, below the slits.
  • the largest outer diameter of the lower portion 3, which is the same as the inner diameter of the flange 5, is equal to or larger than the largest outer diameter of the upper portion 2.
  • the flange has a width of a number of mm, e.g.
  • the protective cap can in a sim ple and safe manner and with a lower force than was previously possible be pulled onto the reinforcing bar, which increases the safety, as the protective cap does not risk to be damaged during mounting, as well as it saves time as the mounting of the protective cap proceeds faster.
  • Fig. 2 shows a second example of a protective cap.
  • the flange is discontinued at some points, so that a number of edge portions 10 are formed.
  • the flange still gives the worker a good grip on the protective cap 1 and the protective cap 1 can still be mounted with a mounting sleeve, but the edge portions 10 saves a few percentages of material.
  • Fig. 3 shows yet another example of a protective cap.
  • the upper protective surface 6 is enlarged, which can offer increased personal protection.
  • the edge of the upper protective surface 6 is provided with recesses 11 , which are intended to cooperate with inner flanges in a mounting sleeve.
  • the inner flanges can thereby abut against the lower bearing surface 8 of the flange 5 without the diameter of the lower flange having to be larger than the diameter of the up per protective surface.
  • Fig. 4 shows an example of a mounting sleeve 20.
  • the mounting sleeve is provided with an upper edge 21 and a lower edge 22.
  • the upper edge 21 is in the shown example closed to increase the contact surface when the pro tective sleeve is mounted with e.g. a hammer.
  • the upper edge 21 is here provided with an enlarged head 23 with a somewhat rounded shape and a diameter that is larger than the body of the mounting sleeve. This will provide a larger contact surface when a worker applies the protective cap with the hand.
  • the mounting sleeve is advantageously manufactured in plastic or al uminium and can e.g. be moulded or cast. It is also possible to extrude the mounting sleeve.
  • the mounting sleeve will be symmetrical, and the upper edge 21 and the lower edge 22 will be identical.
  • the mounting sleeve is here plain on the inside, so that it fits protective caps with a lower flange 5 or edge portions 10 that have a larger diameter than the head of the protective cap.
  • the mounting sleeve 20 may be provided with inner ribs, which are intended to cooperate with recesses in a protective cap with an enlarged upper protective surface.
  • the inner ribs will bear on the lower bear ing surface on protective caps with a flange that runs around the entire pro tective casing. With the proper orientation, the inner ribs will also be able to bear on the edge portions 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Buffer Packaging (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

L'invention concerne un capuchon protecteur (1) qui est destiné à être monté à l'extrémité d'une barre de renforcement, et qui comprend une partie supérieure (2), une partie inférieure (3) et une taille intermédiaire (4). La section transversale de la taille est plus petite que la section transversale de la partie supérieure (2) et/ou de la partie inférieure (3) ; la partie supérieure (2) comporte une surface de protection (6) ; le capuchon protecteur (1) est également pourvu de fentes (7) qui permettent à la taille d'être élastique vers l'extérieur lorsqu'il est monté sur une barre de renforcement ; la partie inférieure (3) comprend une surface d'appui inférieure faisant saillie vers l'extérieur (8) disposée sur une bride (5) ; et le diamètre interne de la bride (5) est égal ou supérieur au diamètre de la surface de protection (6) de la partie supérieure (2).
PCT/SE2021/050368 2020-04-24 2021-04-22 Capuchon protecteur WO2021215990A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21793022.1A EP4139534A4 (fr) 2020-04-24 2021-04-22 Capuchon protecteur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE2050471A SE544282C2 (sv) 2020-04-24 2020-04-24 Skyddshylsa för armeringsjärn innefattandes en utstående stödyta anordnad av en fläns
SE2050471-8 2020-04-24

Publications (1)

Publication Number Publication Date
WO2021215990A1 true WO2021215990A1 (fr) 2021-10-28

Family

ID=78269720

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2021/050368 WO2021215990A1 (fr) 2020-04-24 2021-04-22 Capuchon protecteur

Country Status (3)

Country Link
EP (1) EP4139534A4 (fr)
SE (1) SE544282C2 (fr)
WO (1) WO2021215990A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459763A1 (fr) * 1979-06-27 1981-01-16 Laroche Jean Pierre Capsule de securite
AU657696B2 (en) * 1990-09-10 1995-03-23 Underwood Companies Holdings Pty Ltd Construction site safety
US20050120666A1 (en) * 2003-12-05 2005-06-09 Alyea Mark D. Concrete anchor float

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5469679A (en) * 1994-09-16 1995-11-28 Minnesota Mining And Manufacturing Company Protective cover with locking collar and installation tool
US8002508B2 (en) * 2008-09-26 2011-08-23 Griptight Bolt Cover Co. Protective cover for fasteners
ES1070711Y (es) * 2009-04-17 2010-01-18 Valls Jose Carbonell Elemento de construccion anti-impactos

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2459763A1 (fr) * 1979-06-27 1981-01-16 Laroche Jean Pierre Capsule de securite
AU657696B2 (en) * 1990-09-10 1995-03-23 Underwood Companies Holdings Pty Ltd Construction site safety
US20050120666A1 (en) * 2003-12-05 2005-06-09 Alyea Mark D. Concrete anchor float

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "Capuchon de protection des aciers fers ø 6 à 16 mm (Sac de 250 pièces) ", AMAZON.FR, 1 January 2016 (2016-01-01), XP055867806, Retrieved from the Internet <URL:https://www.amazon.fr/Capuchon-protection-aciers-fers-pièces/dp/B01KQ96CD8> [retrieved on 20211201] *
ANONYMOUS: "CAPUCHONS DE PROTECTION DES ACIERS", COFRASUD, 1 January 2016 (2016-01-01), XP055867808, Retrieved from the Internet <URL:https://www.cofrasud.com/fichiers/catalogue/33582-FT1.pdf> [retrieved on 20211201] *
See also references of EP4139534A4 *

Also Published As

Publication number Publication date
EP4139534A1 (fr) 2023-03-01
SE2050471A1 (sv) 2021-10-25
EP4139534A4 (fr) 2024-04-17
SE544282C2 (sv) 2022-03-22

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