WO1996015343A1 - Fixation pour plinthe d'echafaudage - Google Patents

Fixation pour plinthe d'echafaudage Download PDF

Info

Publication number
WO1996015343A1
WO1996015343A1 PCT/CA1995/000657 CA9500657W WO9615343A1 WO 1996015343 A1 WO1996015343 A1 WO 1996015343A1 CA 9500657 W CA9500657 W CA 9500657W WO 9615343 A1 WO9615343 A1 WO 9615343A1
Authority
WO
WIPO (PCT)
Prior art keywords
toe board
board bracket
toe
channel
ribs
Prior art date
Application number
PCT/CA1995/000657
Other languages
English (en)
Inventor
Bruce A. Nisbet
Original Assignee
North American Brackets Inc.
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 North American Brackets Inc. filed Critical North American Brackets Inc.
Priority to AU38662/95A priority Critical patent/AU3866295A/en
Publication of WO1996015343A1 publication Critical patent/WO1996015343A1/fr
Priority to CA002180519A priority patent/CA2180519A1/fr

Links

Classifications

    • 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/02—Connections between parts of the scaffold with separate coupling elements
    • E04G7/28—Clips or connections for securing boards
    • 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/02—Connections between parts of the scaffold with separate coupling elements
    • E04G7/28—Clips or connections for securing boards
    • E04G2007/285—Clips or connections for securing boards specially adapted for toe boards

Definitions

  • the present invention relates to scaffolding, and in particular to a bracket for attaching toe boards to the perimeter of scaffolding platforms.
  • Scaffolding structures are erected and used to provide elevated working platforms for persons and their tools. These structures are generally temporarily erected at the work site for the duration of the job and then disassembled for use at another work site. Ease and speed of assembly and disassembly and reusability are desirable characteristics of scaffolding structures.
  • Conventional scaffolding is typically erected with separate end frame members stacked vertically to a desired height and connected together with diagonal bracing members to form a framework.
  • a removable platform usually rests on and extends between horizontal members of opposed end frame members.
  • the platform itself is often constructed of plywood or horizontal wooden platform boards with vertical toe boards around the exterior perimeter of the platform.
  • the toe boards serve to prevent tools and equipment from falling off the platform thereby preventing damage to persons and property that may be below.
  • toe boards In use, toe boards are subject to much misuse and abuse. They are routinely and frequently impacted by tools and are kicked by the workers. Consequently, toe boards often become detached.
  • bracket for securing toe boards in position in a reliable manner
  • bracket should be cheap, simple and reliable. It should also be capable of considerable flexibility, and not restrict the configuration of the scaffolding structure in any way.
  • a further common problem with existing toe boards is that due to the abuse the boards receive and the desire to reuse boards, one usually has a supply of boards of varying lengths and odd sizes.
  • bracket horizontal, “vertical”, etc. to describe both the bracket and associated components of a scaffolding assembly. These terms are used to describe the bracket when oriented for normal use and it will be understood that the bracket when not in use may be in any orientation.
  • the present invention is a toes board bracket for use in a scaffolding assembly which generally has horizontal platform boards and vertical perimeter toe boards.
  • the toe board bracket comprises an elongate and substantially rigid vertical channel which is open at both ends and also at the top.
  • the bottom of the channel is closed and has inner and outer sides which are spaced apart to accommodate the interposition of a toe board.
  • a channel base connects the sides at the bottom of the vertical channel thereby closing off the bottom.
  • There is at least one mounting flange secured to and extending from the vertical channel which is adapted to be fastened to a platform board.
  • Another aspect of the present invention encompasses a scaffolding assembly, which comprises a three dimensional framework which defines at least one generally horizontal platform.
  • a plurality of platform boards are mounted on the platform to form a substantially horizontal platform surface.
  • a plurality of toe board brackets, as defined here, are secured to the platform boards.
  • the flanges of the toe board brackets are secured to platform boards such that the channel of the toe board bracket is located adjacent a free outer edge of a platform board.
  • a plurality of toe boards are located in the channels of
  • the present invention should be simple, reusable, inexpensive to manufacture, and able to facilitate the use of toes boards of differing lengths in scaffolding assemblies.
  • the present invention should provide simple and quick assembly and disassembly of scaffolding assemblies. DESCRIPTION OF THE DRAWING FIGURES
  • Figure 1 is a perspective view of a toe board bracket in accordance with the present invention from one side;
  • Figure 2 is a perspective view of a toe board bracket in Figure 1 from the other side;
  • Figure 3 is a view of a corner of a scaffolding platform, showing two brackets with platforms and toe boards in section;
  • Figure 4 is a perspective view showing use of the toe board bracket to join adjacent toe boards together-
  • Figure 5 is a vertical section along line 5-5 of Figure 4;
  • Figure 6 is a perspective view of a scaffolding assembly according to the present invention.
  • Figure 7 is a vertical sectional view through a second embodiment of a toe board bracket in accordance with the present invention
  • Figure 8 is a view of the bracket of Figure 7 from one side
  • Figure 9 is a view of the bracket of Figure 7 from the other side.
  • FIG 10 is a bottom view of the bracket of Figure 7.
  • a toe board bracket 10 comprises an elongate substantially rigid vertical channel 12, which is open at both ends 14 and also at the top 16 and is closed at the bottom 18.
  • the channel 12 has an inner side 20 and an outer side 22 which are spaced apart to accommodate the interposition of a toe board.
  • a mounting flange 28 is integral with and extends from inner side 20 of the vertical channel 12 and is adapted to be fastened to a platform board 60.
  • the mounting flange 28 is substantially perpendicular to the sides 20 and 22 of the channel 12, and is vertically spaced from the channel base 26 by an amount which is substantially equal to the spacing between the sides 20 and 22 of the channel 12, i.e. by an amount equal to the expected thickness of platform boards.
  • Apertures 32 for fasteners are provided in both sides 20 and 22, and the mounting flange 28.
  • the flange 28 has two end apertures 32a.
  • the flange 28 has end surfaces 29. As shown for one and surface 29, in Figure 1, this forms a junction 34, with the inner side 20. The adjacent end aperture 32a then lies on a line 36, which extends through the junction 34 and forms an angle of 45° to the inner side 20. Consequently, when two toe board brackets 10 abut at a platform corner, as shown in Figure 3, their flanges overlap and the end apertures 32a of the two toe board brackets coincide relative to a platform board, to permit a single nail or fastener to secure them to the toe board.
  • the toe board bracket has two end planes 38 which include the ends of the channel and the flange end surfaces 29.
  • the base 26, and the flange 28 all extend to and terminate at the end planes.
  • the toe board bracket is preferably formed from a single piece of sheet metal.
  • the single piece of sheet metal may be rectangular in shape and folded in a manner to extend through the outer side 22, through the channel base 26, then through the other side 20 to the top of the channel and then down that side to the flange and outwardly to a free edge of the flange 28.
  • the inner side 20 comprises first and second panels 20a and 20b of the sheet, abutting one another and continuous at an upper edge.
  • the metal sheet is folded to form a downwardly extending lip 40.
  • the toe board bracket is thus of uniform cross section. It may alternately be formed by extrusion. This has the advantage that the thickness can be varied so that it can be stiffened where required.
  • the toe board bracket may possibly be closed at one end.
  • FIG 6 shows a scaffolding assembly generally indicated by the reference 50.
  • the assembly 50 can include vertical tubes 52, horizontal tubes 54 and appropriate diagonal bracing tubes (not shown).
  • the vertical tubes 52 would include appropriate ground supports (also not shown).
  • Clamping brackets 56 secure the various tubes together to form a three dimensional framework. This can be assembled in known manner, and the exact nature of the tubes, brackets etc., is not essential to the present invention and any suitable proprietary scaffolding system can be employed.
  • the horizontal tubes 54 serve to define a horizontal platform. Platform boards 58 are secured to complete the platform.
  • Toe board brackets 10 are secured in position by fasteners to the edge of the platform 58. It is expected that nails will be used as fasteners, but it is conceivable that screws or other suitable fasteners can be used, depending upon the application. As Figure 6 and 3 show, pairs of brackets indicated at 10a would be provided in the corners. Where required along the sides and depending upon the length of toe boards available, additional side brackets, indicated at 10b would be provided. The brackets 10a and 10b are secured by nails 40 through the apertures of their flanges 28, with the lower part of the channel 12 abutting the side edges of the platform boards 58. Then, suitable toe boards 60 are slid downwardly into the channels 12 of the brackets 10.
  • One advantage of forming the channel from sheet metal is that the upper edges of the sides 20, 22 are inherently rounded, to facilitate insertion of the toe boards. It can be noted that the toe boards are stable even without fasteners. However, to secure the toe board 60, particularly to prevent them from sliding out the ends of the brackets 10, nails 40 are inserted through the apertures 32 in either or both of the inner and outer sides 20 and 22. Usually the nails 40 will be inserted through one side. It is usually convenient to insert the nails 40 through the outer side 22.
  • the brackets 10 of the present invention have a number of other advantages. As indicated in Figure 3, they can be configured to provide an inherently compact and secure arrangement in a corner. As shown in Figure 6, the bracket 10 can be used to join toe boards 60 of differing, varied and odd lengths. Where long boards are available, brackets can be spaced at suitable intervals along the length of the board to securely hold the board in position. A further advantage is that the bracket can make up for short discrepancies in the length of the boards. Thus, for the brackets 10> in Figure 6, there could be gap of a few inches between the boards supported by it. Since the channel 12 has a comparable height to the toe boards, it effectively fills this gap between the two toe boards.
  • Brackets 10 can be formed of any suitable material. It is envisioned that they may suitably form from aluminium or galvanized steel.
  • the apertures in the inner and outer sides 20, 22 can be vertically staggered, so that the nails in these apertures do not interfere with one another. They may alternatively be staggered slightly horizontally, or if it is not perceived as a problem, they could be aligned.
  • bracket will depend upon local regulations, standard sizes of timber locally available, etc.
  • height of the bracket and the height of toe boards may be subject to local regulations. However, the following dimensions are preferred.
  • the vertical channel 12 has a height of 6.25 inches and a length (which is the distance between the two end planes 38) of 6 inches. the distance between sides 20 and 22 or the width of the channel 12 is 1.44 inches.
  • the mounting flange 28 is vertically spaced 1.44 inches from the base 26 and extends 1.88 inches from the inner side.
  • each side 20 and 22 There are three apertures 32 located in each side 20 and 22, spaced one inch from the end planes .38 and two inches from each other.
  • the apertures 32 in each side 20 and 22 are vertically spaced 3.75 inches from the base 26.
  • the apertures have a diameter of 0.188 inches.
  • a second embodiment of the bracket is generally denoted by the reference 70. It is intended that this second embodiment be formed by injection moulding from a firmer plastic material, which is expected will provide adequate strength, which can be stronger than adding a new at least, and will be economic as compared to materials such as aluminum or fibreglass. As before, this second embodiment defines an elongate substantially rigid vertical channel 72, which is open at both ends 74 and also at the top 76, but which is closed at the bottom 78.
  • the channel 72 has an inner side 80 and an outer side 82, which are spaced apart to accommodate a toe board, and which, in this embodiment, are inclined towards one another in an upward direction as detailed below.
  • a channel base 86 connects the sides 80 and 82 at the bottom.
  • a mounting flange 88 is intregal with and extends from the inner side 80 of the vertical channel 12. The mounting flange 88 is substantially perpendicular to the inner side 80, and it is vertically spaced from the channel base 86 by an amount which is substantially equal to the spacing between the bottom of the sides 80, 82, which is an amount equal to the expected thickness of platform boards.
  • the inner side 80 includes an extension 90 extending down below the base 86. Extending from this lower extension are ribs 92 which extend in the vertical plane.
  • the preferred dimensions are for an overall length of 5 inches and an overall vertical height of 7 inches.
  • the lower extension 90 has a vertical height of 0.25 inches.
  • the ribs 92 have a height of 0.25 inches at the base
  • the ribs 100 include apertures 101.
  • the ribs 98 and 100 extend from the top of the inner side 80 to the free edge of the flange 88. As shown on the flange 88, the ribs 100 include circular portions 102 defining aperatures 103, and taper down to narrow end portions 104 having a width of 0.125 inches.
  • the sides 80 to 82 are spaced apart by approximately 1 inch at the base, and in an unloaded condition, the sides taper down to a spacing of 0.7 inches at the top; ie. the outer side 82 is inclined at an angle of 3.0°.
  • the ribs 92 are inclined at a slightly greater angle of 4.0°
  • the sides 80, 82 have a chamfered or tapered end surfaces 106. In use, the taper between the sides 80, 82 will accommodate wear and abrasion on both brackets and toe boards, and should enable toe boards to be gripped to a certain extent by the brackets 72, prior to nailing.
  • the bracket would be formed with rounded corners, and all edges would be suitably rounded. It is intended that the bracket would be moulded from high density polyethylene.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)

Abstract

La présente invention concerne une fixation (10) pour plinthe, destinée à un ensemble d'échafaudage, qui permet de maintenir les plinthes au plancher horizontal. Cette fixation possède un profil en U (12) prolongé extérieurement par un rebord (28). Le rebord (28) doit être cloué au plancher (58) de l'échafaudage. Les plinthes (60) sont ensuite déposées à l'intérieur du profil en U (12) et fixées par des clous ou par d'autres attaches. Ladite fixation (10) offre une meilleure protection contre le déplacement des plinthes (60). Elle permet de recevoir des plinthes de tailles différentes et de compenser les petits espaces entre les plinthes.
PCT/CA1995/000657 1994-11-16 1995-11-15 Fixation pour plinthe d'echafaudage WO1996015343A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU38662/95A AU3866295A (en) 1995-11-15 1995-11-15 Toe board bracket for scaffolding
CA002180519A CA2180519A1 (fr) 1995-11-15 1996-07-04 Ferrure de fixation de planche laterale de plancher d'echafaudage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US34199694A 1994-11-16 1994-11-16
US53816495A 1995-03-23 1995-03-23

Publications (1)

Publication Number Publication Date
WO1996015343A1 true WO1996015343A1 (fr) 1996-05-23

Family

ID=26992768

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1995/000657 WO1996015343A1 (fr) 1994-11-16 1995-11-15 Fixation pour plinthe d'echafaudage

Country Status (1)

Country Link
WO (1) WO1996015343A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1023633C2 (nl) * 2003-06-10 2004-12-14 Albertus Johannes Bettink Kopplankhouder.
CN113232204A (zh) * 2021-05-08 2021-08-10 中材科技风电叶片股份有限公司 一种行走平台

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836106A (en) * 1973-01-15 1974-09-17 Ato Inc Toe board bracket
US3853203A (en) * 1973-07-23 1974-12-10 Werner Co Inc R Independent toeboard construction

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836106A (en) * 1973-01-15 1974-09-17 Ato Inc Toe board bracket
US3853203A (en) * 1973-07-23 1974-12-10 Werner Co Inc R Independent toeboard construction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1023633C2 (nl) * 2003-06-10 2004-12-14 Albertus Johannes Bettink Kopplankhouder.
WO2004109038A1 (fr) * 2003-06-10 2004-12-16 Albertus Johannes Bettink Dispositif d'attache de planches de balustrade
CN113232204A (zh) * 2021-05-08 2021-08-10 中材科技风电叶片股份有限公司 一种行走平台

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