CA1054432A - Air grille components and assembly thereof - Google Patents
Air grille components and assembly thereofInfo
- Publication number
- CA1054432A CA1054432A CA297551A CA297551A CA1054432A CA 1054432 A CA1054432 A CA 1054432A CA 297551 A CA297551 A CA 297551A CA 297551 A CA297551 A CA 297551A CA 1054432 A CA1054432 A CA 1054432A
- Authority
- CA
- Canada
- Prior art keywords
- blade
- members
- air
- air director
- walls
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
- F24F13/075—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser having parallel rods or lamellae directing the outflow, e.g. the rods or lamellae being individually adjustable
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Flow Control Members (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A group of novel components for use in a composite air grille including an air director blade assembly having parallel blades and blade supporting bars at each end, and including a novel form of blade therefor, and including novel frame components, and an air grille using such components.
A group of novel components for use in a composite air grille including an air director blade assembly having parallel blades and blade supporting bars at each end, and including a novel form of blade therefor, and including novel frame components, and an air grille using such components.
Description
`~ ~
35443z The present invention relates the components of an air ,~ .
grille of a type which may be constructed in a variety of different dimensions without excessive tooling costs, and to a grille using these components.
: BACKGROUND OF THE INVENTION
. . :, Typical air grilles incorporate a rectangular metal framework, and a plurality of transverse blades. Usually the blades are rotatable, and are secured by friction, when adjusted, in any particular position. Sometimes two sets of blades are required one behind the other, arranged at right angles to each other.
Manufacturers generally speaking establish a range of sizes or dimensions for such grilles, and are therefore forced to use a variaty of components for the frames, and a variety of blades, of differing lengths, to provide different sizes of grilles.
Tooling costs and parts inventory can therefore be quite a con-siderable burden.
However, commercial and industrial requirements for air grilles depend upon architects or engineers s~ecifications, and it i5 generally speaking not acceptable simply to provide such air grilles in a range of standard sizes. Ideally, the manufacturer should be able to provide air grilles in accordance with any dimensional specifications which the architect requires to suit the particular design of the building under construction. However, such flexibility in dimensions, in accordance with known manu-facturing practise, requires either an excessive amount of tooling to produce various sizes of air grilles, or alternatively, involves excessive hand labour and certain manual skills which increase the cost of the air grille significantly.
It is therefore desirable to provide an air grille ~ .
_ 1 _ .. , - t : ``
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construction in which the measurements may be entirely flexible and may be varied within wide limits without r" the use of separate tooling for different sizes, and with a minimum of hand labour such that the cutting, bending and fittlng of the various parts as required takes place automatically in accordance with dimen-sional specifications which have been preprogrammed.
The invention comprises an air director blade for use in an air grille, said blade comprising, an air director blade member of predetermined width and length and of double walled construction, and, deformable tongue-like extension members extending from each end of each of said walls -- of said blade member of a reduced width in relation thereto.
The invention further comprises an air director blade having the foregoing features and including shoulders formed on each of s~id walls adjacent said tongue members. .~
- The invention further comprises a rotatable air director .~.
blade having the foregoing features and wherein said blade is made of a single piece of sheet metal . .
folded lengthwise to form a double-walled hollow : `
structure, and wherein said tongue-like members are formed ^
integrally from said singIe piece of sheet metal. .
~.
The invention further comprises an air director blade assembly for use in an air grille or the ~ike, ~ `
of the type having an outer framework, said assembly comprising, a plurality of air director blade members of predetermined width and length and of double-walled construction, deformable tongue-like extension members ',- ~ , ' ~
: ~ - 2 -- D
1~49~3;~
extending from each end oE each of said walls of said blade members of a reduced width in relation thereto, and, blade supporting bar members at each end of said blade membars, extending between the ends of said blaae members and supporting the same in said predetermined relation, and adapted for location in said framework to form said air grille.
The invention further comprises an air director blade assembly having the foregoing features and wherein ::
said extension members rotatably support said blade members between said blade supporting means.
The invention further comprises an air director blade assembly having the foregoing features and including spacer means located between said supporting bar members and said blade members.
The invention further comprises an air director blade assembly having the foregoing features and including openings in said bar members dimensioned to snugly receive said extension members whereby the same are rotatably secured therein.
The invention further comprises an air director blade having the foregoing features and wherein said extension members are located along one edge of said blade member, and are of s~mi-cylindrical shape.
The invention further comprises an air director blade having the foregoing features and wherein said blade member comprises two blade walls joined along one edge and forming an acute angle therebetween.
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The foregoing and other objectives of the invention will become apparent from the following description of a . preferred embodiment of the invention which is given here by way .~ of example only with reference to the following drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a front perspective illustration of an air . grille according to the invention;
; Figure 2 is a section along the line 2-2 of Figure l;
Figure 3 is a section corresponding to Figure 2 showing an alternate embodiment;
Figure 4 is a perspective illustration corresponding to Figure 3 showing an alternate embodiment;
- Figure 5 shows an alternate form of frame stock for use in the invention;
Figure 6 shows an alternate form of blade supporting bar; ~ .
Figure 7 is a perspective illustration of a blade, showing the formation of the end member of the blade prior to assembly; ~
Figure 8 is a plan view of the blade of Figure 7, along :
the line 8-8;
Figure 9 is a sectional view of the blade along the lina -~
9 9 of Figure 7;
Figures 10~ 11 and 12 show alternate forms of blade;
Figure 13 shows a further alternate form of blade, and blade mounting means; , Figure 14 shows a further alternate form of blade mounting :
means;
Figure 15 shows a form of fixed blade for sightproof grilles;
Figure 16 is a perspective illustration of the air grilla .. . . . . . ... . .
r--ti~S443Z
: of Figure 1, with the frame cut away to reveal the construction thereof;
. ., Figure 17 is a perspective illustration of a blade shown at a stage in the manufacture and assembly of the air grille;
Figure 18 is a sectional illustration along the line 18-18 of Figure 17;
Figures 19 and 20 show further alternate forms of frame : stock and alternate forms of blade support ~ars;
Figure 21 is a perspective illustration showing an altern~te form of support bar and means for fastening the blades; -Figure 22 shows a further alternate form of support bar `¦ for mounting the blades, and, ¦ Figure 23 shows a corner detail.
DESCRIPTION OF A SPECIFIC EMBOD~MENT
Referring now to Figures 1, 2 and 8, it will be 5een ~ -that the air grille using components according to the invention ~ - -comprises a rectangular framework indicated generally as 10, and an air director blada assembly indicated generally as 12. The frame 10 is formed typically of roll formed, die formed, or extruded material of uniform cross-section along its length, joined at the corners, such cross-section providing a facing flange 14, and a side wall 16. The side wall 16 is formed with a recessed channel 17 extending longitudinally along its inwardly directed face, the channel having side walls 1~ and an intermediate web 20.
The free edge of the facing ~lange 14 is turned in as at 22 to provide a smooth finish. In addition, in accordance with known practise in the industry, such an inturned portion 22 `~
provides a convenient means of joining mitered corners, by means of L-shaped angle plates 24 ~shown in phantom). Other joining means ma~ be used such as a weld or a rivet, etcO
: `
:-`
The blade assembly 12, as best shown in Figures 16 and 17, comprises a plurality of air director blade members 26, rotat-ably mounted at each end in mounting bars 28. The mounting bàrs 28 are elongated flat sheet metal members with holes 30 stamped ; therethrough at regularly spaced intervals. Around the holes 30 are formed depressions 32 for purposes to be described.
According to one form of the invention, the blade members 26 are of double walled hollow sheet metal construction, provided with a generally elliptical airfoil shape along their length. Preferably, such blade members will be formed by roll forming the sheet metal and seaming along one edge as at 34.
Alternatively, the blade members of this type could be made of two separate pieces of sheet metal formed with seams 34 along each edge, if desired.
At each end of the blade members 26, bearing shoulders 36 are formed, and extending from such bearing shoulders 36 are the riveting extensions 38. It will of course be appreciated that since the blade member 26 is of double wall construction, there are two such shoulder members 36, one extending from each wall, and `
there are two such riveting extensions 38, one extending from each wall, such shoulders and riveting extensions being spaced apart by a spacing equal to the spacing between the two walls of the blade member 26 as shown.
As shown in Figures 17 and 18, the riveting extensions 38 of the blade members 26 extend through the holes 30 in the support -bars 28, and are then riveted or stamped over as at 38a so as to retain the blade members 26 in position~ Preferably~ such stamping or riveting action is sufficient to provide a relatively tight fit against the support bars 28, and provide for a certain degree of ~ -~
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.: i - frictional resistance to rotation of the blades 26, so that once - they are preset into a desired air direction pattern, they will retain that position until they are reset into a new pattern. As is shown in Figure 18, the stamped or riveted extensions 38a lie -~ within the depressions 32 around the holes 30.
The support bars 28, carrying the blades 26 are received - in the channels comprising the side walls 18 and web 20 in the wall 16 of the frame 10, and constitute the blade assembly 12 as shown in Figure 1 in the finished grille.
Various modifications can be made to the invention. For example ! as shown in Figure 4, it may be desirable to provide a grille having two sets of blade assemblies 12. Accordingly, a modified form of framework will be provided having a facing flange 40, and side wall 42, and two channels indicated generally as 44 and 46 respectively. Clearly, two blade assemblies 12 can then be inserted into such channels 44 and 46 respectively. Preferably, one such blade assembly 12 will be rotated 90 with respect to the other so as to render the grille substantially sight proof.
Other forms of blade member may be employed in certain circumstances. For example, as shown in Figures 10, 11 and 12 blades may be employed which are pivoted along one side edge instead of pivoting along a centre line as in the case of the blade 26. If, for example, a blade 48 as shown in Figure 10 may comprise a double thickness director portion 50, formed of sheet metal folded over on itself, and having along one edge a generally cylindrical formation 52. At each end of the blade 48 the cylin- "
drical portion 52 may extend outwardly as at 54 to provide a riveting extension, adapted to extend through the holes 30 in the bars 28. ~;
A somewhat lighter form of blade could be made in much -,` 1~5~43Z
the same way as shown by the blade 56 of Figure 11. In this case, the air director portion 58 comprises a single thickness of metal with only its free edge turned over to avoid roughness. A
- similar cylindrical formation 60 is formed along the other edge, - having an extension 62 for riveting in the manner described above.
As shown in Figure 12, a further form of blade 64 may `
be provided similar to the blade 56 of Figure 11, but having a curved director portion 66 turned over at its free edge, and having a cylindrical formation 68 on the other edge thereof and an extension 70 for riveting and the like.
Other forms of pivotal mounting for the blades may be provided, other than the riveting extensions as described above.
; For example, as shown in Figure 13 a blade 72 may be provided, of similar construction for example to the blade 26 o~ Figure 5. In this case however, a longitudinal curved groove formation 74 may be formed down either side therof, and the riveting extensions are eliminated. In their place a pivot pin 76 may be provided having frictional formations 78 along its length. The pin 76 would then be inser~ed through the openings 30 in the support bars 28 and driven into the blades 72, along the line of the channel formations 74. --Preferably, the heads 80 of the pins 76 will provide ;;~
frictional engagement within the depressions 32 around the holes 3Q. ~;
A further alternative form of blade retention is shown in Figure 14. In this case, a flexible plastic strip 82 is provided with a series of retaining pins 83 extending therefrom having frictional formations 84 thereon. The pins 83 are arranged spaced apart a distance equal to the spacing between the holes 30 in the support bars 28. Such plastic strips 82 may be for example injection molded with 12 or more such pins 83 on each such strip.
, 105443;~
.. .
-` These would be used in conjunction with a blade similar to blade - 72. Ill this case, however, the rotation of the blades would be achieved by rotating them relative to the pins 83, the pins 83 providing frictional retention of the blades in any desired position.
Alternatively, a continuous metal support bar 85 can be provided with plastic pins 86 fastened thereto at spaced intervals, and having frictional formations 87 thereon, performing the same function as the strip 82 and pins 83 of Figure 14.
By use of the inven~ion, it will, therefore, be seen ; that it is possible to prepare uniform cross-section frame material, and uniform cross-section blades and uniform cross-section blade support bars, in any desired lengths. Such lengths may then be cut off in a simple punch press or shear to any desired length, and assembled readily with a minimum of hand operations, Thus, one relatively inexpensive set of tooling will permit a manufacturer to produce registers of any dimensions at all. Similarly, it is not necessary for the manufacturer to warehouse substantial inventories of different sizes of parts. All that is required is to maintain on hand a sufficient quantity of lengths of the stock from which the parts will be made, to handle any order that may come in at any `~`
time. `
Furthermore, if the various lengths of stock are made by roll forming then it is possible that no inventory of lengths of stock need be maintained at all. ~olls of sheet metal is all that will be required to be maintained in inventory, and the parts will be formed in the lengths desired as orders are received~
Further modifications may be made to the frame. For example, the side walls 18a of the channel can be arranged in an angled manner instead of providing a simple channel (Figure 5). In _ g _ ,, :
- ' -. ~
:
this way, the blade support bars 28 could be made so as to slide within such a channel and be retained therein by the inward convergence of the side walls 18a. Furthermore, it will, of course, be appreciated that while the ~rame 10 as shown in Figure 1 is made of uniform stock on all four sides, if desired, two . different types of frame stock can be made up, one with the -- channel, and one with a straight side wall 16. In this way~ if desired, a frame could be made up in which only two opposite sides . were formed with channels and the other two opposite sides were - 10 formed without. However, in most cases this would not be neces-sary, and it would, of course, involve the use of additional - tooling and the production of further parts.
Other forms of air grille can be made in the same way, without providing for pivoting blades. For example, a sight proof blade 88 may be used consisting of two air director portions .: 90, meeting at an angle (see Figure 15) and having riveting exten- -sions 92. Such blades can be installed in mounting bars 28 in any one of the various ways described above, the fastening being ;
somewhat more secure so that no rotation can take place at allO
Various modifications can be made to the support bars 28. .
For example, as shown in Figures 21 and 22, a modified .
form of support bar 94 may be provided, having a series of pairs .
of struck-out tongues 96. Such tongues 96 would be inserted into cylindrical format.ions on the blade, such as those shown in Figures 10, 11 and 12, and would replace the riveting extensions. Alterna-tively, as shown in Figure 22, a support bar 98 could be provided with struck-out tongues 100 formed by striking out diagonal pieces of metal, instead of length wise portions 96 as shown in Figure 21.
In this way, the tongues 100 can be arranged somewhat closer together along the bar 98.
- 10 - ,,, lOS443Z
Fùrthur modifications may be made both with respect to the side frame and the support bars as shown in Figures 19 and 20.
For example, shown in Figure 19 the side frame may be made with a facing portion 102 similar to the facing portion 14 of Figure 1.
However, the side wall 104 may be made without any channel or recess at all, and simply being a flat linear member In this case, the support bars 106 might be formed with a continuous lengthwise groove 108, for receiving the turned over portions 38a :j of the riveting extensions of the blades 26. The support bars 106 .1 10 would be fastened in position by any suitable fastening means such ¦ as rivets 110, or screws or spot welding or the like.
~ As shown in Figure 20, a modified form of frame may be ;! constructed having a facing member 112, and a side wall 114 defining :~ a continuous lengthwise recess or groove, and having upper and lower shoulders 116 extending length~ise parallel with the groove ~ 114.
! A modlfied form of support bar 118 may be provided having ! upper and lower angled portions 120 fitting around the shoulders ! 116. Again, the support bars 118 would be fastened in position by any suitable fastening means such as rivets 122, or screws, spot welding or the like.
Such a modified support bar 118, of rectangular channel shape in section can also be used with the frame side wall 16 as shown in Figure 3. The support bar 118 will of course be made so as to fit within the channel 17 as shown. The channel shape of bar 118 w~ll provide the necessary clearance for the rivetting exten-sions 38.
It will, therefore, be understood that there is generally disclosed an air director blade assembly for an air grille, said assembly having a plurality of air director blades arranged trans-versely of said frame extending from side to side thereof D
. ~, ' ~ , ;' -`-~C~5443Z
parallel with one another, and thexe being a pair of blade support-ing bar members supporting and locating the opposite ends of said blades, the blade supporting bars being adapted for mounting on the opposite side members of a framework, whereby the blades and blade supporting bars may be assembled independently of the frame and placed in position in a frame to complete the air grille.
There is also disclosed as a separate component, - - a frame specifically adapted to receive a pre-formed blade assembly, and novel blades for use in such assembly, and an air grille using such components, and also a corner locking member for locking the frame components together in a rectangular form.
The locking plates 24 are shown ln detail in Figure 23.
: Plates 24 have inner edges 130 extended to form angled pointed corners 132. The end edges 133 are angled at 45 so that - the outer edges 134 are the same length as the inner edges 130.
Teeth 136 are formed on tha outer edges 134 by shearing the metal at intervals and bending generally triangular portions upwardly or downwardly, (or in both directions). -The use of inner and outer edges of the same length per-mits the plates 24 to be manually inserted in the ends of the frame . ;portions and pressed home by hand.
The term air grille is used through in a general sense to indicate any opening through which air or gas passes in a directed manner. In particular, it does not exclude combinations of an air damper, with such a grille, which is sometimes known as an "air register".
The foregoing is a description of a preferred embodiment of the invention which is given here by way of example only. The invention is not to be taken as limited to any of the specific features as described, but comprehends all such variations thereof as come within the scope of the appended claims.
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: . ~ .: ~ -.
35443z The present invention relates the components of an air ,~ .
grille of a type which may be constructed in a variety of different dimensions without excessive tooling costs, and to a grille using these components.
: BACKGROUND OF THE INVENTION
. . :, Typical air grilles incorporate a rectangular metal framework, and a plurality of transverse blades. Usually the blades are rotatable, and are secured by friction, when adjusted, in any particular position. Sometimes two sets of blades are required one behind the other, arranged at right angles to each other.
Manufacturers generally speaking establish a range of sizes or dimensions for such grilles, and are therefore forced to use a variaty of components for the frames, and a variety of blades, of differing lengths, to provide different sizes of grilles.
Tooling costs and parts inventory can therefore be quite a con-siderable burden.
However, commercial and industrial requirements for air grilles depend upon architects or engineers s~ecifications, and it i5 generally speaking not acceptable simply to provide such air grilles in a range of standard sizes. Ideally, the manufacturer should be able to provide air grilles in accordance with any dimensional specifications which the architect requires to suit the particular design of the building under construction. However, such flexibility in dimensions, in accordance with known manu-facturing practise, requires either an excessive amount of tooling to produce various sizes of air grilles, or alternatively, involves excessive hand labour and certain manual skills which increase the cost of the air grille significantly.
It is therefore desirable to provide an air grille ~ .
_ 1 _ .. , - t : ``
` 1~54~3Z
construction in which the measurements may be entirely flexible and may be varied within wide limits without r" the use of separate tooling for different sizes, and with a minimum of hand labour such that the cutting, bending and fittlng of the various parts as required takes place automatically in accordance with dimen-sional specifications which have been preprogrammed.
The invention comprises an air director blade for use in an air grille, said blade comprising, an air director blade member of predetermined width and length and of double walled construction, and, deformable tongue-like extension members extending from each end of each of said walls -- of said blade member of a reduced width in relation thereto.
The invention further comprises an air director blade having the foregoing features and including shoulders formed on each of s~id walls adjacent said tongue members. .~
- The invention further comprises a rotatable air director .~.
blade having the foregoing features and wherein said blade is made of a single piece of sheet metal . .
folded lengthwise to form a double-walled hollow : `
structure, and wherein said tongue-like members are formed ^
integrally from said singIe piece of sheet metal. .
~.
The invention further comprises an air director blade assembly for use in an air grille or the ~ike, ~ `
of the type having an outer framework, said assembly comprising, a plurality of air director blade members of predetermined width and length and of double-walled construction, deformable tongue-like extension members ',- ~ , ' ~
: ~ - 2 -- D
1~49~3;~
extending from each end oE each of said walls of said blade members of a reduced width in relation thereto, and, blade supporting bar members at each end of said blade membars, extending between the ends of said blaae members and supporting the same in said predetermined relation, and adapted for location in said framework to form said air grille.
The invention further comprises an air director blade assembly having the foregoing features and wherein ::
said extension members rotatably support said blade members between said blade supporting means.
The invention further comprises an air director blade assembly having the foregoing features and including spacer means located between said supporting bar members and said blade members.
The invention further comprises an air director blade assembly having the foregoing features and including openings in said bar members dimensioned to snugly receive said extension members whereby the same are rotatably secured therein.
The invention further comprises an air director blade having the foregoing features and wherein said extension members are located along one edge of said blade member, and are of s~mi-cylindrical shape.
The invention further comprises an air director blade having the foregoing features and wherein said blade member comprises two blade walls joined along one edge and forming an acute angle therebetween.
.; - - .......................... . n --~5443~:
The foregoing and other objectives of the invention will become apparent from the following description of a . preferred embodiment of the invention which is given here by way .~ of example only with reference to the following drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a front perspective illustration of an air . grille according to the invention;
; Figure 2 is a section along the line 2-2 of Figure l;
Figure 3 is a section corresponding to Figure 2 showing an alternate embodiment;
Figure 4 is a perspective illustration corresponding to Figure 3 showing an alternate embodiment;
- Figure 5 shows an alternate form of frame stock for use in the invention;
Figure 6 shows an alternate form of blade supporting bar; ~ .
Figure 7 is a perspective illustration of a blade, showing the formation of the end member of the blade prior to assembly; ~
Figure 8 is a plan view of the blade of Figure 7, along :
the line 8-8;
Figure 9 is a sectional view of the blade along the lina -~
9 9 of Figure 7;
Figures 10~ 11 and 12 show alternate forms of blade;
Figure 13 shows a further alternate form of blade, and blade mounting means; , Figure 14 shows a further alternate form of blade mounting :
means;
Figure 15 shows a form of fixed blade for sightproof grilles;
Figure 16 is a perspective illustration of the air grilla .. . . . . . ... . .
r--ti~S443Z
: of Figure 1, with the frame cut away to reveal the construction thereof;
. ., Figure 17 is a perspective illustration of a blade shown at a stage in the manufacture and assembly of the air grille;
Figure 18 is a sectional illustration along the line 18-18 of Figure 17;
Figures 19 and 20 show further alternate forms of frame : stock and alternate forms of blade support ~ars;
Figure 21 is a perspective illustration showing an altern~te form of support bar and means for fastening the blades; -Figure 22 shows a further alternate form of support bar `¦ for mounting the blades, and, ¦ Figure 23 shows a corner detail.
DESCRIPTION OF A SPECIFIC EMBOD~MENT
Referring now to Figures 1, 2 and 8, it will be 5een ~ -that the air grille using components according to the invention ~ - -comprises a rectangular framework indicated generally as 10, and an air director blada assembly indicated generally as 12. The frame 10 is formed typically of roll formed, die formed, or extruded material of uniform cross-section along its length, joined at the corners, such cross-section providing a facing flange 14, and a side wall 16. The side wall 16 is formed with a recessed channel 17 extending longitudinally along its inwardly directed face, the channel having side walls 1~ and an intermediate web 20.
The free edge of the facing ~lange 14 is turned in as at 22 to provide a smooth finish. In addition, in accordance with known practise in the industry, such an inturned portion 22 `~
provides a convenient means of joining mitered corners, by means of L-shaped angle plates 24 ~shown in phantom). Other joining means ma~ be used such as a weld or a rivet, etcO
: `
:-`
The blade assembly 12, as best shown in Figures 16 and 17, comprises a plurality of air director blade members 26, rotat-ably mounted at each end in mounting bars 28. The mounting bàrs 28 are elongated flat sheet metal members with holes 30 stamped ; therethrough at regularly spaced intervals. Around the holes 30 are formed depressions 32 for purposes to be described.
According to one form of the invention, the blade members 26 are of double walled hollow sheet metal construction, provided with a generally elliptical airfoil shape along their length. Preferably, such blade members will be formed by roll forming the sheet metal and seaming along one edge as at 34.
Alternatively, the blade members of this type could be made of two separate pieces of sheet metal formed with seams 34 along each edge, if desired.
At each end of the blade members 26, bearing shoulders 36 are formed, and extending from such bearing shoulders 36 are the riveting extensions 38. It will of course be appreciated that since the blade member 26 is of double wall construction, there are two such shoulder members 36, one extending from each wall, and `
there are two such riveting extensions 38, one extending from each wall, such shoulders and riveting extensions being spaced apart by a spacing equal to the spacing between the two walls of the blade member 26 as shown.
As shown in Figures 17 and 18, the riveting extensions 38 of the blade members 26 extend through the holes 30 in the support -bars 28, and are then riveted or stamped over as at 38a so as to retain the blade members 26 in position~ Preferably~ such stamping or riveting action is sufficient to provide a relatively tight fit against the support bars 28, and provide for a certain degree of ~ -~
` l~S443Z
.: i - frictional resistance to rotation of the blades 26, so that once - they are preset into a desired air direction pattern, they will retain that position until they are reset into a new pattern. As is shown in Figure 18, the stamped or riveted extensions 38a lie -~ within the depressions 32 around the holes 30.
The support bars 28, carrying the blades 26 are received - in the channels comprising the side walls 18 and web 20 in the wall 16 of the frame 10, and constitute the blade assembly 12 as shown in Figure 1 in the finished grille.
Various modifications can be made to the invention. For example ! as shown in Figure 4, it may be desirable to provide a grille having two sets of blade assemblies 12. Accordingly, a modified form of framework will be provided having a facing flange 40, and side wall 42, and two channels indicated generally as 44 and 46 respectively. Clearly, two blade assemblies 12 can then be inserted into such channels 44 and 46 respectively. Preferably, one such blade assembly 12 will be rotated 90 with respect to the other so as to render the grille substantially sight proof.
Other forms of blade member may be employed in certain circumstances. For example, as shown in Figures 10, 11 and 12 blades may be employed which are pivoted along one side edge instead of pivoting along a centre line as in the case of the blade 26. If, for example, a blade 48 as shown in Figure 10 may comprise a double thickness director portion 50, formed of sheet metal folded over on itself, and having along one edge a generally cylindrical formation 52. At each end of the blade 48 the cylin- "
drical portion 52 may extend outwardly as at 54 to provide a riveting extension, adapted to extend through the holes 30 in the bars 28. ~;
A somewhat lighter form of blade could be made in much -,` 1~5~43Z
the same way as shown by the blade 56 of Figure 11. In this case, the air director portion 58 comprises a single thickness of metal with only its free edge turned over to avoid roughness. A
- similar cylindrical formation 60 is formed along the other edge, - having an extension 62 for riveting in the manner described above.
As shown in Figure 12, a further form of blade 64 may `
be provided similar to the blade 56 of Figure 11, but having a curved director portion 66 turned over at its free edge, and having a cylindrical formation 68 on the other edge thereof and an extension 70 for riveting and the like.
Other forms of pivotal mounting for the blades may be provided, other than the riveting extensions as described above.
; For example, as shown in Figure 13 a blade 72 may be provided, of similar construction for example to the blade 26 o~ Figure 5. In this case however, a longitudinal curved groove formation 74 may be formed down either side therof, and the riveting extensions are eliminated. In their place a pivot pin 76 may be provided having frictional formations 78 along its length. The pin 76 would then be inser~ed through the openings 30 in the support bars 28 and driven into the blades 72, along the line of the channel formations 74. --Preferably, the heads 80 of the pins 76 will provide ;;~
frictional engagement within the depressions 32 around the holes 3Q. ~;
A further alternative form of blade retention is shown in Figure 14. In this case, a flexible plastic strip 82 is provided with a series of retaining pins 83 extending therefrom having frictional formations 84 thereon. The pins 83 are arranged spaced apart a distance equal to the spacing between the holes 30 in the support bars 28. Such plastic strips 82 may be for example injection molded with 12 or more such pins 83 on each such strip.
, 105443;~
.. .
-` These would be used in conjunction with a blade similar to blade - 72. Ill this case, however, the rotation of the blades would be achieved by rotating them relative to the pins 83, the pins 83 providing frictional retention of the blades in any desired position.
Alternatively, a continuous metal support bar 85 can be provided with plastic pins 86 fastened thereto at spaced intervals, and having frictional formations 87 thereon, performing the same function as the strip 82 and pins 83 of Figure 14.
By use of the inven~ion, it will, therefore, be seen ; that it is possible to prepare uniform cross-section frame material, and uniform cross-section blades and uniform cross-section blade support bars, in any desired lengths. Such lengths may then be cut off in a simple punch press or shear to any desired length, and assembled readily with a minimum of hand operations, Thus, one relatively inexpensive set of tooling will permit a manufacturer to produce registers of any dimensions at all. Similarly, it is not necessary for the manufacturer to warehouse substantial inventories of different sizes of parts. All that is required is to maintain on hand a sufficient quantity of lengths of the stock from which the parts will be made, to handle any order that may come in at any `~`
time. `
Furthermore, if the various lengths of stock are made by roll forming then it is possible that no inventory of lengths of stock need be maintained at all. ~olls of sheet metal is all that will be required to be maintained in inventory, and the parts will be formed in the lengths desired as orders are received~
Further modifications may be made to the frame. For example, the side walls 18a of the channel can be arranged in an angled manner instead of providing a simple channel (Figure 5). In _ g _ ,, :
- ' -. ~
:
this way, the blade support bars 28 could be made so as to slide within such a channel and be retained therein by the inward convergence of the side walls 18a. Furthermore, it will, of course, be appreciated that while the ~rame 10 as shown in Figure 1 is made of uniform stock on all four sides, if desired, two . different types of frame stock can be made up, one with the -- channel, and one with a straight side wall 16. In this way~ if desired, a frame could be made up in which only two opposite sides . were formed with channels and the other two opposite sides were - 10 formed without. However, in most cases this would not be neces-sary, and it would, of course, involve the use of additional - tooling and the production of further parts.
Other forms of air grille can be made in the same way, without providing for pivoting blades. For example, a sight proof blade 88 may be used consisting of two air director portions .: 90, meeting at an angle (see Figure 15) and having riveting exten- -sions 92. Such blades can be installed in mounting bars 28 in any one of the various ways described above, the fastening being ;
somewhat more secure so that no rotation can take place at allO
Various modifications can be made to the support bars 28. .
For example, as shown in Figures 21 and 22, a modified .
form of support bar 94 may be provided, having a series of pairs .
of struck-out tongues 96. Such tongues 96 would be inserted into cylindrical format.ions on the blade, such as those shown in Figures 10, 11 and 12, and would replace the riveting extensions. Alterna-tively, as shown in Figure 22, a support bar 98 could be provided with struck-out tongues 100 formed by striking out diagonal pieces of metal, instead of length wise portions 96 as shown in Figure 21.
In this way, the tongues 100 can be arranged somewhat closer together along the bar 98.
- 10 - ,,, lOS443Z
Fùrthur modifications may be made both with respect to the side frame and the support bars as shown in Figures 19 and 20.
For example, shown in Figure 19 the side frame may be made with a facing portion 102 similar to the facing portion 14 of Figure 1.
However, the side wall 104 may be made without any channel or recess at all, and simply being a flat linear member In this case, the support bars 106 might be formed with a continuous lengthwise groove 108, for receiving the turned over portions 38a :j of the riveting extensions of the blades 26. The support bars 106 .1 10 would be fastened in position by any suitable fastening means such ¦ as rivets 110, or screws or spot welding or the like.
~ As shown in Figure 20, a modified form of frame may be ;! constructed having a facing member 112, and a side wall 114 defining :~ a continuous lengthwise recess or groove, and having upper and lower shoulders 116 extending length~ise parallel with the groove ~ 114.
! A modlfied form of support bar 118 may be provided having ! upper and lower angled portions 120 fitting around the shoulders ! 116. Again, the support bars 118 would be fastened in position by any suitable fastening means such as rivets 122, or screws, spot welding or the like.
Such a modified support bar 118, of rectangular channel shape in section can also be used with the frame side wall 16 as shown in Figure 3. The support bar 118 will of course be made so as to fit within the channel 17 as shown. The channel shape of bar 118 w~ll provide the necessary clearance for the rivetting exten-sions 38.
It will, therefore, be understood that there is generally disclosed an air director blade assembly for an air grille, said assembly having a plurality of air director blades arranged trans-versely of said frame extending from side to side thereof D
. ~, ' ~ , ;' -`-~C~5443Z
parallel with one another, and thexe being a pair of blade support-ing bar members supporting and locating the opposite ends of said blades, the blade supporting bars being adapted for mounting on the opposite side members of a framework, whereby the blades and blade supporting bars may be assembled independently of the frame and placed in position in a frame to complete the air grille.
There is also disclosed as a separate component, - - a frame specifically adapted to receive a pre-formed blade assembly, and novel blades for use in such assembly, and an air grille using such components, and also a corner locking member for locking the frame components together in a rectangular form.
The locking plates 24 are shown ln detail in Figure 23.
: Plates 24 have inner edges 130 extended to form angled pointed corners 132. The end edges 133 are angled at 45 so that - the outer edges 134 are the same length as the inner edges 130.
Teeth 136 are formed on tha outer edges 134 by shearing the metal at intervals and bending generally triangular portions upwardly or downwardly, (or in both directions). -The use of inner and outer edges of the same length per-mits the plates 24 to be manually inserted in the ends of the frame . ;portions and pressed home by hand.
The term air grille is used through in a general sense to indicate any opening through which air or gas passes in a directed manner. In particular, it does not exclude combinations of an air damper, with such a grille, which is sometimes known as an "air register".
The foregoing is a description of a preferred embodiment of the invention which is given here by way of example only. The invention is not to be taken as limited to any of the specific features as described, but comprehends all such variations thereof as come within the scope of the appended claims.
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: . ~ .: ~ -.
Claims (9)
1. An air director blade for use in an air grille, said blade comprising;
an air director blade member of predetermined width and length and of double walled construction, and, deformable tongue-like extension means extending from each end of each of said walls of said blade member of a reduced width in relation thereto.
an air director blade member of predetermined width and length and of double walled construction, and, deformable tongue-like extension means extending from each end of each of said walls of said blade member of a reduced width in relation thereto.
2. An air director blade as claimed in Claim 1 including shoulders formed on each of said walls adjacent said tongue-like extension means.
3. An air director blade as claimed in Claim 1 wherein said blade is made of a single piece of sheet metal folded lengthwise to form two walls defining a hollow structure, and wherein said tongue-like extension means comprise two pairs of generally flattened extension members, located at respective ends of said blade member, each said member being formed integrally with a respective said one of said walls, from a single piece of sheet metal.
4. An air director blade as claimed in Claim 1, wherein said extension means are located along the axis of one edge of said blade member and are of semi-cylindrical shape.
5. An air director blade as claimed in Claim 1, wherein said blade member comprises two blade walls joined along one edge and forming an acute angle therebetween, with said blade walls diverging outwardly therefrom.
6. An air director blade assembly for use in an air grille or the like, of the type having an outer framework, said assembly comprising;
a plurality of air director blade members of pre-determined width and length and of double-walled construction;
deformable tongue-like extension means extending from each end of each of said walls of said blade members of a reduced width in relation thereto, and, blade supporting bar members at each end of said blade members, extending between the ends of said blade members and supporting the same in spaced parallel relationship, and adapted for location in said framework to form said air grille.
a plurality of air director blade members of pre-determined width and length and of double-walled construction;
deformable tongue-like extension means extending from each end of each of said walls of said blade members of a reduced width in relation thereto, and, blade supporting bar members at each end of said blade members, extending between the ends of said blade members and supporting the same in spaced parallel relationship, and adapted for location in said framework to form said air grille.
7. An air director blade assembly as claimed in Claim 6, wherein said extension means rotatably support said blade members between said blade supporting means.
8. An air director blade assembly as claimed in Claim 7 including spacer means located between said supporting bar members and said blade members.
9. An air director blade assembly as claimed in Claim 6 including openings in said bar members dimensioned to snugly receive said extension means whereby the same are rotatably secured therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA297551A CA1054432A (en) | 1975-10-30 | 1978-02-23 | Air grille components and assembly thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA238,828A CA1045442A (en) | 1975-10-30 | 1975-10-30 | Air grille components and air grille therefrom |
| CA297551A CA1054432A (en) | 1975-10-30 | 1978-02-23 | Air grille components and assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1054432A true CA1054432A (en) | 1979-05-15 |
Family
ID=25668131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA297551A Expired CA1054432A (en) | 1975-10-30 | 1978-02-23 | Air grille components and assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1054432A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4610197A (en) * | 1985-06-12 | 1986-09-09 | Philips Industrial Components, Inc. | Damper blade construction |
| EP0773413A3 (en) * | 1993-03-05 | 1997-07-02 | Mitsubishi Electric Corp | Air-direction adjusting apparatus in air-conditioning equipment |
-
1978
- 1978-02-23 CA CA297551A patent/CA1054432A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4610197A (en) * | 1985-06-12 | 1986-09-09 | Philips Industrial Components, Inc. | Damper blade construction |
| EP0773413A3 (en) * | 1993-03-05 | 1997-07-02 | Mitsubishi Electric Corp | Air-direction adjusting apparatus in air-conditioning equipment |
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