NZ616620A - A garage door bracket - Google Patents
A garage door bracket Download PDFInfo
- Publication number
- NZ616620A NZ616620A NZ616620A NZ61662013A NZ616620A NZ 616620 A NZ616620 A NZ 616620A NZ 616620 A NZ616620 A NZ 616620A NZ 61662013 A NZ61662013 A NZ 61662013A NZ 616620 A NZ616620 A NZ 616620A
- Authority
- NZ
- New Zealand
- Prior art keywords
- bracket
- garage door
- housing
- garage
- moulded
- Prior art date
Links
- 150000001875 compounds Chemical class 0.000 claims abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 6
- 239000011707 mineral Substances 0.000 claims description 6
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 230000003014 reinforcing Effects 0.000 claims description 3
- 239000000789 fastener Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 description 11
- 239000002184 metal Substances 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000003068 static Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000000717 retained Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Abstract
616620 A one piece moulded sectional garage door bracket (1A) is disclosed. The bracket includes a housing (2) for securing a shaft of a roller guide member in a bore (3). The bracket is made of a rigid compound with a low coefficient of friction and is formed as an integral moulded unit with the bracket. Apertures (5A-D) are used to attach the bracket to a door section using fasteners. The garage door bracket reduces the number of components used and operates more efficiently by reducing operational noise of the door. racket. Apertures (5A-D) are used to attach the bracket to a door section using fasteners. The garage door bracket reduces the number of components used and operates more efficiently by reducing operational noise of the door.
Description
A GARAGE DOOR BRACKET
TECHNICAL FIELD
Described herein is a garage door bracket. More specifically, a garage door bracket that
includes a housing dimensioned to receive a roller shaft for securing a roller guide therein used in
a vertical opening sectional garage door.
BACKGROUND ART
It is well known that garages include retractable doors, such that the garage can be opened for
the vehicle to enter and the door subsequently closed. It is more common that the garage door
be opened and closed automatically, such as by using motors connected to drive trains or rods
which can be selectively moved or rotated in opposite directions to open and close the garage
doors.
Typically, the garage door will run on tracks which extend from opposite sides of the garage
vehicle entrance towards the ceiling of the garage. The garage door opener is positioned within
the garage towards the ceiling so as to pull the garage door upwardly towards the ceiling on its
track as it is opened, and subsequently move the garage door downwardly and into the vehicle
entrance to close the garage. Such garage doors typically include a plurality of horizontal
pivotally connected sectional panels to facilitate this vertical movement.
A problem associated with operating such garage doors has been the provision of suitable
brackets for transferring loads from door counterbalance or lifting cables to the door structure
itself. For example, a conventional bottom bracket generally includes a cable attachment and a
roller housing for securing a roller guide therein. The roller housing typically includes spaced
apart flanges stamped out of the bottom bracket, each flange having at least one hole
dimensioned to receive a shaft of a roller of a guide member. Generally, the flange holes for the
roller shaft are slightly larger than the roller shaft such that there is excess movement between
the flange and shaft. As the flange is manufactured of pressed steel (along with a steel roller
shaft), this metal-to-metal contact significantly contributes to the operational noise of the door
when opened. Also, this excess movement can cause the roller shaft to move laterally causing
the roller to bind along the track. In these instances, a tube, typically formed of sheet metal, can
be inserted through the tubes. The roller shaft is then inserted in the tube. However, this
increases the number of components and does not prevent metal-to-metal contact contributing
to the operational noise of the door when opened.
Garage door brackets also include separate roller housings. A roller housing is generally
fastened, such as by rivet or screw, to a surface of the bracket. Again, this increases the
number of components leading to increased costs and installation time. Another problem
associated with fastening of the roller housing to the bracket is that the screws can loosen,
which can cause the roller housing to disengage from the bracket in use.
From the above, it can be seen that there is a need for a garage door bracket that includes a
roller shaft housing, reduces the number of components used, operates more efficiently by
reducing operational noise of the door, reduces the problems associated with the prior art and/or
provides the public with a useful choice.
Further aspects and advantages of the bracket will become apparent from the ensuing
description that is given by way of example only.
SUMMARY
Described herein is a garage door bracket for securing a roller guide member therein. The
bracket is moulded from one piece of material to reduce componentry, has a low coefficient of
friction (COF), and avoids metal-to-metal contact between componentry.
In a first aspect, there is provided a one piece moulded garage door bracket which includes:
a housing for securing a shaft of a roller guide member therein;
the bracket being made of a rigid compound with a low coefficient of friction; and
wherein the housing is formed as an integral moulded unit with the bracket.
In a second aspect, there is provided a sectional garage door including the garage door bracket
as substantially described above.
In a third aspect, there is provided a sectional garage door including a plurality of garage door
brackets as substantially described above wherein the garage door brackets include a housing
with a bore of varying raised mounting positions provided by a raised mounting portion of the
housing such that the bore of each garage bracket is moulded at different heights to correlate
with varying vertical angles of a track with respect to a door frame.
The garage door bracket confers a number of advantages. One advantage is that the roller
housing is integrally moulded with the bracket which reduces the number of components lowering
manufacturing costs and installation time.
The housing may include a bore with a partially hollow back. An advantage of this configuration is
that the bore with a partially hollow back not only reduces the amount of material used (hence
saving costs and weight), but also decreases the contact surface of the roller shaft with respect
to the housing. This in turn reduces the dry static friction between the shaft and housing leading
to a more efficient operation.
Also, the entire bracket is manufactured out of a low coefficient of friction (COF) material which
avoids metal-to-metal contact of the shaft and housing. The avoidance of metal-to-metal contact
also reduces the operational noise of the rollers when the garage door is opened.
Furthermore, the garage door bracket may be easily retrofitted and/or integrated into existing
systems.
BRIEF DESCRIPTION OF THE DRAWINGS
Further aspects of the garage door bracket will become apparent from the following description
that is given by way of example only and with reference to the accompanying drawings in which:
Figure 1 illustrates a front perspective view of a bottom bracket;
Figure 2 illustrates a rear perspective view of the bottom bracket of Figure 1;
Figure 3 illustrates a front perspective view of a first bracket with a raised housing mount;
Figure 4 illustrates a rear perspective view of the first bracket of Figure 3;
Figure 5 illustrates a front perspective view of a second bracket with a raised housing mount;
Figure 6 illustrates a front perspective view of a third bracket with a raised housing mount;
Figure 7 illustrates a front perspective view of a fourth bracket with a raised housing mount;
Figure 8 illustrates a perspective view of a top bracket having at least one flange configured
to engage with a top track; and
Figure 9 illustrates a rear perspective view of a garage door including a plurality of
interconnected sectional garage door panels and a bracket.
DETAILED DESCRIPTION
As noted above, described herein is a garage door bracket for securing a roller guide member
therein. The bracket is moulded from one piece of material to reduce componentry, has a low
coefficient of friction (COF), and avoids metal-to-metal contact between componentry.
For the purpose of this specification the term 'comprise' and grammatical variations thereof shall
have an inclusive meaning - i.e. that it will be taken to mean an inclusion of not only the listed
components it directly references, but also other non-specified components or elements.
For the purposes of this specification, the term ‘about’ or ‘approximately’ and grammatical
variations thereof mean a quantity, level, degree, value, number, frequency, percentage,
dimension, size, amount, weight or length that varies by as much as 30, 25, 20, 15, 10, 9, 8, 7,
6, 5, 4, 3, 2, or 1% to a reference quantity, level, degree, value, number, frequency, percentage,
dimension, size, amount, weight or length.
The term ‘substantially’ or grammatical variations thereof refers to at least about 50%, for
example 75%, 85%, 95% or 98%.
The term ‘garage door’ or grammatical variations thereof refers to a sectional door for a garage
or other building structure such as, but not limited to a factory or warehouse. Hence, it is
envisaged that the ‘garage door’ bracket may be utilised on any type of sectional door.
The term ‘sectional door’ or grammatical variations thereof refers to a door made up of sections
hinged together, thus allowing it to bend around a track.
The term ‘rigid compound’ or grammatical variations thereof refers to a synthetic material (distinct
from a metal or alloy) that can be moulded, is substantially uncompressible and has the requisite
strength and properties suitable as a mounting bracket to a door and/or frame. By way of
example, and not limitation, materials found to be suitable include acetyl plastics, PVC, Teflon,
mineral or mineral/glass-reinforced Nylon.
In a first aspect, there is provided a one piece moulded garage door bracket which includes:
a housing for securing a shaft of a roller guide member therein;
the bracket being made of a rigid compound with a low coefficient of friction; and
wherein the housing is formed as an integral moulded unit with the bracket.
The housing may be a bore moulded into the bracket. In one embodiment, the housing may have
a substantially hollow back. This configuration reduces the amount of material hence saving
costs and weight and also reduces the contact surface of the roller shaft with respect to the
housing. This results in less friction between the shaft and housing giving a more efficient
operation.
The housing may include a raised mounting portion with a tapered face. In this way, the bore of
each bracket may be moulded at different heights to correlate with varying vertical angles of a
track with respect to a doorframe.
The bracket may be manufactured out of a material with a low coefficient of friction (COF) such
as acetyl plastics, PVC, Teflon, mineral or mineral/glass-reinforced Nylon. However, this should
not be seen as a limitation for the embodiments envisaged for this invention as for example, any
material that provides a dry static friction of approximately less than 0.8 µ (steel-steel) could
conceivably be used with this invention.
The bracket may include moulded reinforcing elements to provide additional structural rigidity.
The bracket may include apertures to receive fixing elements thereby securing the bracket to a
sectional panel. Also, the apertures may align with separate hinge brackets to receive fixing
elements thereby joining adjacent sectional panels at a joining interface.
The bracket may be a top bracket having at least one flange or sidewall configured to engage
with a top track.
In a second aspect, there is provided a sectional garage door including the garage door bracket
as substantially described above.
In a third aspect, there is provided a sectional garage door including a plurality of garage door
brackets as substantially described above wherein the garage door brackets include a housing
with a bore of varying raised mounting positions provided by a raised mounting portion of the
housing such that the bore of each garage bracket is moulded at different heights to correlate
with varying vertical angles of a track with respect to a door frame.
The garage door bracket confers a number of advantages:
• The roller housing is integrally moulded with the bracket which reduces the number of
components thereby lowering manufacturing costs and installation time;
• The housing includes a bore with a partially or substantially hollow back. An advantage
of this configuration is that the bore not only reduces the amount of material used (hence
saving costs and weight), but also decreases the contact surface of the roller shaft with
respect to the housing. This in turn reduces the dry static friction between the shaft and
housing leading to a more efficient operation;
• The entire bracket is manufactured out of a low coefficient of friction (COF) material
which avoids metal-to-metal contact of the shaft and housing. The avoidance of metal-to-
metal contact also reduces the operational noise of the rollers when the garage door is
opened; and
• The garage door bracket may be easily retrofitted and/or integrated into existing
systems.
The embodiments described above may also be said broadly to consist in the parts, elements
and features referred to or indicated in the specification of the application, individually or
collectively, and any or all combinations of any two or more said parts, elements or features, and
where specific integers are mentioned herein which have known equivalents in the art to which
the embodiments relates, such known equivalents are deemed to be incorporated herein as of
individually set forth,
Where specific integers are mentioned herein which have known equivalents in the art to which
this invention relates, such known equivalents are deemed to be incorporated herein as if
individually set forth.
WORKING EXAMPLE
The above described garage door bracket is now described by reference to specific
embodiments.
Referring to Figure 1, a one piece bottom garage door bracket 1A is shown made of rigid
moulded acetyl plastics material that includes a housing 2 for securing a shaft of a roller guide
therein (not shown). The housing 2 includes a bore 3 having a substantially hollow back 4 (best
seen in Figure 2) to form an integral unit.
The bracket 1A includes four apertures 5A, B, C, and D to receive fixing elements (not shown)
thereby securing the bracket 1A to a sectional panel (not shown). Also, the apertures 5A, B, C
and D are aligned with separate hinge brackets 6 to receive the same fixing elements thereby
joining adjacent sectional panels at a joining interface (best seen in Figure 9).
Figures 3 to 7 show one piece intermediary garage door brackets 1B with the same features to
that of bracket 1A (Figure 1, same features given like numerals), but having a housing 2 that
includes a raised mounting portion 7 and a tapered face 8. In these embodiments, the bore 3 of
each of these brackets 1B has been moulded at different heights to correlate with varying vertical
angles of a track with respect to a door frame. The reverse face of bracket 1B includes moulded
reinforcing elements 9A, B, C and D to provide additional structural rigidity.
Figure 8 shows a one piece top garage door bracket 1C with the same features to that of bracket
1A (Figure 1, same features given like numerals), but having two side flanges or side walls 10
configured to engage with a top track.
Figure 9 illustrates a rear perspective view of a garage door with an upwardly openable door
including a plurality of generally planar door panels 11 which can be interconnected by suitable
hinge brackets 6 fixed to cooperating adjacent edges or joining interfaces of the door panels 11.
The door is supported for movement between the closed position shown, which closes an
opening in a doorway, and an open position by spaced apart guide tracks 12.
In use, a plurality of garage door brackets 1A, B and C ranging from a bottom bracket (not
shown), intermediary bracket 1B to a top bracket (not shown) are selected according to the
varying vertical angles of a track 12 with respect to a door frame when the door is in its closed
position. Accordingly, each intermediary bracket 1B includes a housing 2 with a suitably
dimensioned raised mounting portion 7 (where required) to correspond to the angle at each
location of the track 12.
The guide members in the form of rollers 13 are mounted on an elongated, generally cylindrical
shaft member or axle 14. The bore 3 of the housing 2 in each of the brackets 1A, B and C are
dimensioned to selectively accommodate the axle 14 of the guide member 13. The brackets 1A,
B and C are fastened to the door panels 11 with a fixing element 15 in known fashion. During
operation, the axle 14 of the rollers 13 are retained within the housing 2 and the rollers 13
attached to the axles 14 are free to rotate and move within the guide tracks 12 in a known
manner thereby supporting the door in its open and closed positions and for guiding the door
during movement therebetween.
Aspects of the garage door bracket have been described by way of example only and it should
be appreciated that modifications and additions may be made thereto without departing from the
scope of the appended claims.
Claims (13)
1. A one piece moulded garage door bracket which includes: a housing for securing a shaft of a roller guide member therein; the bracket being made of a rigid compound with a low coefficient of friction; wherein the housing is formed as an integral moulded unit with the bracket; and wherein the housing includes a substantially hollow back to reduce the contact surface of the shaft with respect to the housing
2. A garage door bracket as claimed in claim 1 wherein the housing is a bore moulded into the bracket.
3. A garage door bracket as claimed in claim 1 or claim 2 wherein the housing includes a raised mounting portion such that the bore of each garage bracket is moulded at different heights to correlate with varying vertical angles of a track with respect to a door frame.
4. A garage door bracket as claimed in claim 3 wherein the raised mounting portion includes a tapered face.
5. A garage door bracket as claimed in any one of the above claims wherein the garage door bracket is manufactured out of a compound selected from any one of acetyl plastics, PVC, Teflon, mineral and mineral/glass-reinforced Nylon.
6. A garage door bracket as claimed in any one of the above claims wherein the garage door bracket includes moulded reinforcing elements to provide additional structural rigidity.
7. A garage door bracket as claimed in any one of the above claims wherein the bracket includes apertures to receive fixing elements thereby securing the bracket to a sectional panel.
8. A garage door bracket as claimed in claim 7 wherein the apertures are in alignment with separate hinge brackets to receive the fixing elements thereby joining adjacent sectional panels at a joining interface.
9. A garage door bracket as claimed in any one of the above claims wherein the garage door bracket is a top bracket having at least one flange configured to engage with a top track.
10. A sectional garage door including the garage door bracket as claimed in any one of the above claims.
11. A sectional garage door including a plurality of garage door brackets as substantially claimed in any one of claims 1 to 9.
12. A sectional garage door including a plurality of garage door brackets as claimed in claim 11 wherein the garage door brackets include a housing with a bore of varying raised mounting positions provided by a raised mounting portion of the housing such that the bore of each garage bracket is moulded at different heights to correlate with varying vertical angles of a track with respect to a door frame.
13. A garage door bracket as substantially herein before described and with reference to the accompanying example and
Publications (2)
Publication Number | Publication Date |
---|---|
NZ616620A true NZ616620A (en) | 2014-01-31 |
NZ616620B NZ616620B (en) | 2014-05-01 |
Family
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