CA1162362A - Vacuum cleaning appliances - Google Patents
Vacuum cleaning appliancesInfo
- Publication number
- CA1162362A CA1162362A CA000373856A CA373856A CA1162362A CA 1162362 A CA1162362 A CA 1162362A CA 000373856 A CA000373856 A CA 000373856A CA 373856 A CA373856 A CA 373856A CA 1162362 A CA1162362 A CA 1162362A
- Authority
- CA
- Canada
- Prior art keywords
- socket
- pipe member
- appliance
- vacuum cleaning
- cleaning appliance
- 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/32—Handles
- A47L9/322—Handles for hand-supported suction cleaners
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/02—Nozzles
- A47L9/08—Nozzles with means adapted for blowing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Vacuum Cleaner (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Peptides Or Proteins (AREA)
- Detergent Compositions (AREA)
Abstract
ABSTRACT
"VACUUM CLEANING APPLIANCES"
This invention relates to a vacuum cleaning appliance which is convertible to act both as an upright type cleaner or a cylinder type cleaner.
The main air passageway through the appliance includes a motor driven suction fan unit and a valve device which is operable to connect the passageway either with an air inlet in a carpet engaging section or with an air inlet in a socket for receiving a cleaner head in the form of a hollow pipe which is connected with the socket by a flexible hose. The pipe slides telescopi-cally within the flexible hose so as to engage within the socket and to act as a handle. When located in the socket the pipe operates the valve device to connect the air passageway with the carpet engaging section.
"VACUUM CLEANING APPLIANCES"
This invention relates to a vacuum cleaning appliance which is convertible to act both as an upright type cleaner or a cylinder type cleaner.
The main air passageway through the appliance includes a motor driven suction fan unit and a valve device which is operable to connect the passageway either with an air inlet in a carpet engaging section or with an air inlet in a socket for receiving a cleaner head in the form of a hollow pipe which is connected with the socket by a flexible hose. The pipe slides telescopi-cally within the flexible hose so as to engage within the socket and to act as a handle. When located in the socket the pipe operates the valve device to connect the air passageway with the carpet engaging section.
Description
1 ~ 6~362
- 2 -~ his i~vention relates generally to vacuum cleaning appliances a~d more particu-larly, but not exclusively, to portable electrically operated vacuum appliances intended for domestic use.
Vacuum cleaning appliances of thi~
kind include an electrically driven fa~
whereby dust, grit a~d other dirt ingrained i~ a carpet i~ removed by suction, the dirt being deposited in a removable container such as a bag.
An upright-type cleaner of the above kind usuall~ comprises a housing for the fa~
w it, the housing having a carpet engaging section which may incorporate rotatable , brushes. ~he machine is usually mPnipulated i by a rigid handle pivotally mou~ted on the casing of the applia~ce.
~ c~linder t~e machine of the above k~nd usuall~ comprises a mai~ casing containing the fan unit and havi~g an inlet openi~g for receivi~g a flexible hose to which r~
I
suitable fittings ma~ be attached.
An object of the present invention is to provide a vacuum cleaning appliance which incorporates the advantages of both t~es of machines and which is so constructed that the machine may be easily and quickl~
converted from one typeto the other as dePired. ~he cleaning appliance of the invention may therefore be u3ed as an upright type machine movable over a carpet to be~
clea~ed b~ means of its handle which in the preferred embodiments of the invention consists of a rigid tubular pipe member mounted within a flexible hose connected to the cas~ng of the cleaner. In the upright operation of the cleaner ~he ;nner end of the pipe member is slidably projected through the surroundi~g flexible hose and is located with m a~ opening in the casing to provide a rigid handle for manoeuvrering the machine.
When so fitted the end of the pipe member ~eat8 within the opening in the casing so as .. ... . . . .. ... . . . . . ..
~ ~ ~2362 to close the inner end of the pipe member and it furthermore acts to maintain open a spring operated valve member located in the passageway co~necting the motor driven fan unit with the floor engaging section of the clea~er.
In order to convert the cleaner for cylinder type operation the handle is slidably removed ~rom the opening in the casing so as to provide a rigid pipe member mounted within the end of the surrounding flexible hose connected to the casing. The - removal of the pipe member from the opening in the casing furthermore releases the valve member which under the action of its spring closes off the connection between the fan unit and the carpet engaging section, and thereby communicates the fan unit directly with the hose member and its associated : 20 pipe member which now forms the carpet engag m g member of the cleaner. In this mode of operation of the cleaner various 1 1 ~2362 attachments can be fitted to the end of the pipe member in accordance with conventional practice, for example for the cleaning of curtains and furniture.
A further related object of the invention is to provide the cleaner with an improved brush unit in the carpet engaging section of the appliance.
~he features of the invention may ~e incorporated in any conventional vacuum cleaning appliance. However, in order that the invention may be clearly understood the features of the invention will now be des-cribed by way of example with reference to the accompanying drawings which illustrate a cyclone t~pe vacuum cleani~g appliance as described in m~ co-pendI~g application ~o. ~so ~ 9 0 . In the accompanying drawings:-Figure 1 is a side elevation of a vacuum cleaning appliance incorporating the features of the invention;
I ~ 62362 -- 6 _ Figure 2 is a section on the line 2-2 of Figure 1.showing details of the handle construction;
Figure 3 is a section through a part of the vacuum cleani~g appliance taken on the li~e 3-3 in Figure 1;
Figure 4 is a horizontal section through the casing of the vacuum clean m g appliance taken on the line 4-4 in Figure 3 and showing the direction of air flow through the appliance;
Figure 5 is a section taken on the line ; . 5-5 in Figure 4 and showing the valve device controlled by the handle of the appliance for ~5 converting it from its upright mode of opera-tion to its cyl~nder mode of operation and vice ~ersa;
Figure 6 is a part sectio~al view similar to Figure 5 showing the val~e device an tubular handle positioned for upright mode of operation of the appliance;
Figure 7 i8 a similar part section show m g the ~alve device positioned for cylinder mode of operation of the appliance;
Figure 8 is a section on the line 8-8 in Figure 3 showing the carpet engaging section or cleaner head of the appliance;
Figure 9 is a part section on the line 9-9 in Figure 3 showing the ratchet and pawl arrangement for rotating the -carpet engaging brushes; and Figure 10 i8 a part section similar to Figure 9 but showing the operation of the ratchet and pawl during a re~erse movement of the appliance over a carpet.
~eferring now to ~igure 1 of the drawings, the vacuum cleaning appliance of the invention is shown in its upright mode of oper-ation and it comprises a main casi~g 10 which is detachabl~ fitted to the top of a casing 11 containi~g the electric motor and fan unit.
~he main casi~g 10 is pro~ided with a rigid U-shaped carr~ing handle 12 which is connected at its ends to the opposite side portio~s 13 of the main casing. The motor ca~ing 11 is - 8 _ ll 623B2 fitted at opposite sides with a pair of supporting wheels 15 (see ~igure 3) for the appliance and the casing also includes an on-off push switch 16 for controlling the operation of the electric motor.
A lower cleaner head 17 for engaging a carpet to be cleaned is pivotally mounted on the motor casmg 11 so that during use of the appliance the main casing ma~ be pivoted relatively to the cleaner head 17 to allow the passage of the appliance under low furniture such as a bed.
~ he motor casing 11 is provided with an extension 18 which forms a rigid socket for slidably receiving the lower end of a tubular pipe or wand 19. ~he pipe 19 at its upper end is fitted with a hand grip 20 and forms a handle for manoeu~riDg the appliance. The pipe 19 ~lidably fits within a stretch, retractable flexible hose 21 which is secured at its lower end around the upper open end of the extension 18 of the casing. ~he arrangement is such that .
,.,~
, y~,.
_ 9 _ the pipe 19 when fitted in the socket of the extension 18 enables the handle to be used for manoeu~rering the appliance as an upright type machine. When the pipe 19 is slidably removed from the socket in the extension 18 the pipe 19 is then used as a cleaner head at the end of the flexible hose 21 thus converting the appliance into a c~linder type machi~e. ~he fitting of the pipé 19 in hose 21 a~d the conversion of the appliance from one mode of operation to the other and ~ice versa will be described hereinafter in greater detail.
Figure 3 of the drawings provides a section through the lower part of main casing 10, motor casing 11 and cleaner head 17 of the appliance.
~ he main casing 10 provides a hous~ng for the cleaner unit which may be of any conventional type including e.g. dust bags. In the drawing the cleaner unit con~ists of a pair of cyclones 22 and 23 which _ 10 -are located in series in the air flow through the appliance and which operate to remo~e b~ centrifugal action the dust and other dirt engrained in the air. ~he con-struction and operation of such cleaninsunits are described and claimed in my co-pending application.
~ he c~clones 22 t 2~ at their lower larger ends are interconnected centrally of the casing so as to provide an inter-communicating passageway 24 (see Figure 4) for the air flow through the appliance.
- ~he cyclones 22, 23 are spaced from the casing 10 to form therebetween and externally of the cyclones a chamber 32 for receiving dust and other dirt removed from ; the air flsw by the cyclone units.
The air flow enters the main casing 10 through a flexible hose 45 which is attached to a short rigid pipe 46 opening into the casing 47 of the lower cleaner head 17. The hose 45 at its upper end is attached to a short rigid pipe 48 which extends through ....
, ~ .
a horizontal plate 49, which plate is attached to and forms the top plate of the motor casing 11. The pipe 48 connects with a curved entry pipe 49 so as to direct the air flow as shown by the arrows into the basé of the cyclone 22 in a tangential manner (see also ~igures 4 and 5), the air then spiraling up the inner surface of the curved wall of the cyclone to depo~it en-grained aust and dirt by centrifugal action o~er the top edge of the cyolone.
The air flow then passes centrally down the cyclone into a pipe 50 formed in the top plate 49 and then enters the transverse - 15 passageway 24. ~he air flow then enters the lower part of the cyclone 23 also I~ a tan-gential manner (Qee Figure 4) and is again processed in the cyclone so as to remo~e any further remaining fine dùst and dirt.
The air flow then passes centrall~
down the c~clone 23 to enter a pipe 51 up-standing from the plate 49. ~he air flow ., .. , . . . ~ , . . .
_ 12 -exits from the pipe 51 into the fan and motor chamber 52 of the casing 11, and is then discharged through an aperture 53 into the cleaner head casing 47 from which it discharges into the carpet through an elon-gated slot 54 (see Figure 8) formed in the casing. In an alternative construction the air flow ma~ discharge directly into the atmosphere from a side slot i~ the casing.
~he plate 49 forming the top plate of the motor casing 11 has an outer peripheral flange 55 which seats in thé lip 56 of a housing 57 providing the lower part of the casing 11. ~he plate 49 i~ attached to the housing 57 b~ connecting bolt 58 and nut 59, the bolt extending through a chamber 60 which ; communicates with the Inlet pipe 48 by means Or an aperture 61 (see Figuré ~ he chamber 60 also communicates with hollow shaft 27 which is provided with a control knob (not shown). The user of the appliance ma~
progressively vent the inlet passa~eway of the .; .
;. ~. . , ~ , l 1 6~362 _ 13 _ appliance to atmosphere and so var~ at will the degree of suction exerted on the carpet being cleaned. This control of the appliance is available whether the appliance is operat~ ng in its upright or cylinder mode of operation.
~he casing 11 consisti~g of the top plate 49 and the housing 57 to which it is connected provides firstly the chamber 52 for the motor 64 and the fan 65, and secondly a chamber 66 in which i8 mounted a spring loaded reel 67 for the electric supply cable 68 of the appliance.
~he lower cleaner head casing 47 is elongated in shape and extends across the width Or the appliance having a pair of spaced up-standing arms 69 and 70 which are pivotally attach~d to the casing 11 by means of pivot l pins 71 located within sl~ts in the bottom ¦ housing 57. ~he casing 47 is provided with the ¦ 20 exit pipe 46 previously mentio~ed and also formed with a chamber 72 provided by walls 73 upstanding from the casing 47 and which slidably , 1 ~ 62362 , _ 14 -engage the lower wall of the housing 57 around the aperture 53.
~ he cleaner head casIng 47 furthermore ha~
a longitudinal open-sided slot 74 in which is located a rotatable brush unit 75. ~he brush unit comprises opposite sets of bristles and is mounted on a longitudinal shaft 76 pivotally mounted in the end walls 77 of the casing. ~he shart 76 al~o supports the plates 78 which are toothed and one of which comprises a ratchet which i8 engaged by a pawl 79 during one direc-tion Or rotation of the ~rush unit.
During forward movement of the appliance as shown in Figure 9 the brush unit 75 rotates free~y while in contact with the carpet, but - during reverse movement as shown in ~igure 10 the pawl 79 engages a ratchet tooth 80 on the correspondIqg plate 78 so as to prevent reverse movement of the brush unit 75 and which thereb~
provides a brushing effect to the carpet.
During rotation of the brush unit 75 during a forward movement of the appliance, the opposite ~.. .
~` '' ~ ~
1 1 6236~
.
- 15 _ sets of bristles preferably passed between spaced plates 81 (see particularly ~igure ~) so as to remove therefrom any accumulated fluff and other dirt which is then sucked into the appliance through the pipe 46.
As previously mentioned the vacuum cleaning appliance of the invention as shown ~n the drawings is primarily intended for operation as an upright type cleaner, the appliance being manoeu~red by the handle 20 on the end of the tubular pipe 19 which fits the socket in the extension 18 of the motor casing 11.
~he invention however provides that the appliance may be quickly and simply converted for operation as a cylInder t~pe cleaner and vice versa, merel~ by the remo~al and insertion of the tubular pipe or wand 19 in the socket of the casing extension 18.
~he constructional features which enable this change over are sh9wn more clearl~
Figures 5 to 7 of the drawings.
~ .. .
.. , . . . .... _ ~ ~, . . . . . .
~ 1 623~2 - 16 - . :
Figure 5 shows the pipe or wand 19 inserted in the extension 18 which provides an open socket 82 for slidably receiving the lower end of the pipe. ~he socket 82 provides an end seat 83 for the end of the pipe 19, but in its operating mode as an upright cleaner as shown in ~igure 5 the end of the pipe is held spaced from the seat 83 by a valve device shown generally by the refere~ce 85.
~he valve device 85 controls an aper-ture 84 in the side wall of the socket 82 which communicates the socket with the inlet pipe 48 of the appliance.
~he valve de~ice is pivotally mounted at 86 on the casing and it comprises a valve member 87 normally closing the aperture 84.
At the other side of the pivot point 86 the valve device has an open sided housing 88 in which is mounted a compression spring 89 normally urging the valve device in an a~ti-clockwise direction to open the aperture 84.
A switch member 90 is also mounted pivotally , , ~ , ~ , , ~ , . .. . .. ..
~623~2 7 _ on the valve device and is movable relatively thereto. ~he switch member 90 is formed with a bore which contains a compression spring 94 acting against a slidable p1unger 93.
When the appliance is in its upright mode of operation the pipe 19 is located as shown in Figure 5 with the corner edge 91 of the switch member 90 engaging a groove 92 in the pipe 19. In this position the valve member 87 has closed the aperture 84 and the plunger 93 has engaged a part Qf the pivot 86 which is on that side of the pivot line adjacent the housing 88. In this position the switch member 90 i6 locked into position so that anti-1~ clockwise movement of the switch member and valve device is prevented and this retains the pipe 19 firmly in position to act as a handle to manoeuvre the appliance.
In order to convert the appliance to a cyli~der type cleaner the pipe 19 i8 firstly pu~hed downwardly In the socket 82 into the seat 83 as shown in Figure 6 of the drawings.
As the pipe 19 moves downwardly the switch member pivots clockwise relatively to the valve device and this re-engages the plunger 93 on the opposite side of the line from the pivot 86. The plunger 93 now holds the switch member 90 in the position shown in Figure 6 which allows for uurestricted removal of the pipe 19 upwardl~ from the socket 82.
As the pipe 19 moves upwardly the valve device 85 pivots anti-clockwise under the action of its spring 89 to the position shown in Figure 7. In this position the - ~al~o. member 87 engages the top edge of the wall of the pipe 48 to allow the plunger to re-engage the opposite side of the line from the pivot point 86 which thus allows anti-clockwise pivotal movement of the ~witch member 90 relative to the valve device. This sets the switch member for subsequent engage-ment with the pipe 19 when the pipe is reinsertedin the socket 82 for conversion to the upright mode of operation of the appliance.
, . .
I 1~2362 In this cylinder mode of operation as shown in ~igure 7 the pipe 19 is now connected through the aperture 84 directly with the passageway entering the cleaner unit. The valve member 87 now closes the inlet connection to the cleaner head and by slidably moving the pipe 19 to the end of the surroundi~g flexible hose 21 the open end of the pipe handle 20 can be used as a cleaner head and may be fitted with various attachments in the conventional manner. ~he pipe 19 is retained in a sealing tight manner in the outer end of the hose 21 by a cuff 95 which permits sliding of the pipe 19 and the lock~ng therein of the end of the pipe by means of the groove 92.
Although in the preferred embodime~t as described above the change-over from cylinder to upright mode of operation and vice versa is effected by mcvement of the wand handle it will be understood that entirely separate control of the chan~e-over valve may be incorporated in the appliance. For example, the valve device !
~ 1 623~2 85 may be actuated manually from the exterior of the casing or it may be controlled electri-cally from the handle of the appliance. In such arrangements the wand handle would be fitted in the flexible hose to engage the locating socket as previousl~ described.
Referring now to Figure 2 of the drawings the pipe or wand 19 is slidabl~
mounted in ho3e 21 and at its inner or lower end it i8 fitted with a fixed sleeve 96. ~he hose 21 i8 connected at its lower end to the socket 82 b~ a cuff 97, the hose having a PVC sleeve 98 bonded to the cuff.
The upper end of the hose includes a further PVC sleeve 99 bonded to the cuff 95 which includes a felt or similar seal 100 in sliding contact with pipe 19. In ~igure 2 pipe 19 i8 show~ in the in~erted or upright mode of operation of the appliance. In the conversion of the appliance to its cyl~nder mode pipe 19 ~lide~ relative to cuff 95 until the upper edge 101 of sleeve 96 engages surface 102 of upper cuff 95. The arrangement ,, ~ ,, . . .. . , ~
1 1 6236~
prevents the removal of pipe 19 from hose 21 but the be~elled edge 101 enables the hose to be removed if required by force. The arrange-ment as described is of course applicable to - 5 an~ conventional cylinder type appliance for locating the wand when not in use.
In order to re-convert the appliance for upright mode of operation the pipe 19 is merely re-i~serted slidably within the short upright tubular casing 82. This manoeuvre is generally facilitated by closing the open end of the pipe handle ~0 while the fan is oper-ating~ the resulting suction acting to straighten the hose 21 which enables the pipe 19 to be slidabl~ moved therein without difficulty.
Vacuum cleaning appliances of thi~
kind include an electrically driven fa~
whereby dust, grit a~d other dirt ingrained i~ a carpet i~ removed by suction, the dirt being deposited in a removable container such as a bag.
An upright-type cleaner of the above kind usuall~ comprises a housing for the fa~
w it, the housing having a carpet engaging section which may incorporate rotatable , brushes. ~he machine is usually mPnipulated i by a rigid handle pivotally mou~ted on the casing of the applia~ce.
~ c~linder t~e machine of the above k~nd usuall~ comprises a mai~ casing containing the fan unit and havi~g an inlet openi~g for receivi~g a flexible hose to which r~
I
suitable fittings ma~ be attached.
An object of the present invention is to provide a vacuum cleaning appliance which incorporates the advantages of both t~es of machines and which is so constructed that the machine may be easily and quickl~
converted from one typeto the other as dePired. ~he cleaning appliance of the invention may therefore be u3ed as an upright type machine movable over a carpet to be~
clea~ed b~ means of its handle which in the preferred embodiments of the invention consists of a rigid tubular pipe member mounted within a flexible hose connected to the cas~ng of the cleaner. In the upright operation of the cleaner ~he ;nner end of the pipe member is slidably projected through the surroundi~g flexible hose and is located with m a~ opening in the casing to provide a rigid handle for manoeuvrering the machine.
When so fitted the end of the pipe member ~eat8 within the opening in the casing so as .. ... . . . .. ... . . . . . ..
~ ~ ~2362 to close the inner end of the pipe member and it furthermore acts to maintain open a spring operated valve member located in the passageway co~necting the motor driven fan unit with the floor engaging section of the clea~er.
In order to convert the cleaner for cylinder type operation the handle is slidably removed ~rom the opening in the casing so as to provide a rigid pipe member mounted within the end of the surrounding flexible hose connected to the casing. The - removal of the pipe member from the opening in the casing furthermore releases the valve member which under the action of its spring closes off the connection between the fan unit and the carpet engaging section, and thereby communicates the fan unit directly with the hose member and its associated : 20 pipe member which now forms the carpet engag m g member of the cleaner. In this mode of operation of the cleaner various 1 1 ~2362 attachments can be fitted to the end of the pipe member in accordance with conventional practice, for example for the cleaning of curtains and furniture.
A further related object of the invention is to provide the cleaner with an improved brush unit in the carpet engaging section of the appliance.
~he features of the invention may ~e incorporated in any conventional vacuum cleaning appliance. However, in order that the invention may be clearly understood the features of the invention will now be des-cribed by way of example with reference to the accompanying drawings which illustrate a cyclone t~pe vacuum cleani~g appliance as described in m~ co-pendI~g application ~o. ~so ~ 9 0 . In the accompanying drawings:-Figure 1 is a side elevation of a vacuum cleaning appliance incorporating the features of the invention;
I ~ 62362 -- 6 _ Figure 2 is a section on the line 2-2 of Figure 1.showing details of the handle construction;
Figure 3 is a section through a part of the vacuum cleani~g appliance taken on the li~e 3-3 in Figure 1;
Figure 4 is a horizontal section through the casing of the vacuum clean m g appliance taken on the line 4-4 in Figure 3 and showing the direction of air flow through the appliance;
Figure 5 is a section taken on the line ; . 5-5 in Figure 4 and showing the valve device controlled by the handle of the appliance for ~5 converting it from its upright mode of opera-tion to its cyl~nder mode of operation and vice ~ersa;
Figure 6 is a part sectio~al view similar to Figure 5 showing the val~e device an tubular handle positioned for upright mode of operation of the appliance;
Figure 7 i8 a similar part section show m g the ~alve device positioned for cylinder mode of operation of the appliance;
Figure 8 is a section on the line 8-8 in Figure 3 showing the carpet engaging section or cleaner head of the appliance;
Figure 9 is a part section on the line 9-9 in Figure 3 showing the ratchet and pawl arrangement for rotating the -carpet engaging brushes; and Figure 10 i8 a part section similar to Figure 9 but showing the operation of the ratchet and pawl during a re~erse movement of the appliance over a carpet.
~eferring now to ~igure 1 of the drawings, the vacuum cleaning appliance of the invention is shown in its upright mode of oper-ation and it comprises a main casi~g 10 which is detachabl~ fitted to the top of a casing 11 containi~g the electric motor and fan unit.
~he main casi~g 10 is pro~ided with a rigid U-shaped carr~ing handle 12 which is connected at its ends to the opposite side portio~s 13 of the main casing. The motor ca~ing 11 is - 8 _ ll 623B2 fitted at opposite sides with a pair of supporting wheels 15 (see ~igure 3) for the appliance and the casing also includes an on-off push switch 16 for controlling the operation of the electric motor.
A lower cleaner head 17 for engaging a carpet to be cleaned is pivotally mounted on the motor casmg 11 so that during use of the appliance the main casing ma~ be pivoted relatively to the cleaner head 17 to allow the passage of the appliance under low furniture such as a bed.
~ he motor casing 11 is provided with an extension 18 which forms a rigid socket for slidably receiving the lower end of a tubular pipe or wand 19. ~he pipe 19 at its upper end is fitted with a hand grip 20 and forms a handle for manoeu~riDg the appliance. The pipe 19 ~lidably fits within a stretch, retractable flexible hose 21 which is secured at its lower end around the upper open end of the extension 18 of the casing. ~he arrangement is such that .
,.,~
, y~,.
_ 9 _ the pipe 19 when fitted in the socket of the extension 18 enables the handle to be used for manoeu~rering the appliance as an upright type machine. When the pipe 19 is slidably removed from the socket in the extension 18 the pipe 19 is then used as a cleaner head at the end of the flexible hose 21 thus converting the appliance into a c~linder type machi~e. ~he fitting of the pipé 19 in hose 21 a~d the conversion of the appliance from one mode of operation to the other and ~ice versa will be described hereinafter in greater detail.
Figure 3 of the drawings provides a section through the lower part of main casing 10, motor casing 11 and cleaner head 17 of the appliance.
~ he main casing 10 provides a hous~ng for the cleaner unit which may be of any conventional type including e.g. dust bags. In the drawing the cleaner unit con~ists of a pair of cyclones 22 and 23 which _ 10 -are located in series in the air flow through the appliance and which operate to remo~e b~ centrifugal action the dust and other dirt engrained in the air. ~he con-struction and operation of such cleaninsunits are described and claimed in my co-pending application.
~ he c~clones 22 t 2~ at their lower larger ends are interconnected centrally of the casing so as to provide an inter-communicating passageway 24 (see Figure 4) for the air flow through the appliance.
- ~he cyclones 22, 23 are spaced from the casing 10 to form therebetween and externally of the cyclones a chamber 32 for receiving dust and other dirt removed from ; the air flsw by the cyclone units.
The air flow enters the main casing 10 through a flexible hose 45 which is attached to a short rigid pipe 46 opening into the casing 47 of the lower cleaner head 17. The hose 45 at its upper end is attached to a short rigid pipe 48 which extends through ....
, ~ .
a horizontal plate 49, which plate is attached to and forms the top plate of the motor casing 11. The pipe 48 connects with a curved entry pipe 49 so as to direct the air flow as shown by the arrows into the basé of the cyclone 22 in a tangential manner (see also ~igures 4 and 5), the air then spiraling up the inner surface of the curved wall of the cyclone to depo~it en-grained aust and dirt by centrifugal action o~er the top edge of the cyolone.
The air flow then passes centrally down the cyclone into a pipe 50 formed in the top plate 49 and then enters the transverse - 15 passageway 24. ~he air flow then enters the lower part of the cyclone 23 also I~ a tan-gential manner (Qee Figure 4) and is again processed in the cyclone so as to remo~e any further remaining fine dùst and dirt.
The air flow then passes centrall~
down the c~clone 23 to enter a pipe 51 up-standing from the plate 49. ~he air flow ., .. , . . . ~ , . . .
_ 12 -exits from the pipe 51 into the fan and motor chamber 52 of the casing 11, and is then discharged through an aperture 53 into the cleaner head casing 47 from which it discharges into the carpet through an elon-gated slot 54 (see Figure 8) formed in the casing. In an alternative construction the air flow ma~ discharge directly into the atmosphere from a side slot i~ the casing.
~he plate 49 forming the top plate of the motor casing 11 has an outer peripheral flange 55 which seats in thé lip 56 of a housing 57 providing the lower part of the casing 11. ~he plate 49 i~ attached to the housing 57 b~ connecting bolt 58 and nut 59, the bolt extending through a chamber 60 which ; communicates with the Inlet pipe 48 by means Or an aperture 61 (see Figuré ~ he chamber 60 also communicates with hollow shaft 27 which is provided with a control knob (not shown). The user of the appliance ma~
progressively vent the inlet passa~eway of the .; .
;. ~. . , ~ , l 1 6~362 _ 13 _ appliance to atmosphere and so var~ at will the degree of suction exerted on the carpet being cleaned. This control of the appliance is available whether the appliance is operat~ ng in its upright or cylinder mode of operation.
~he casing 11 consisti~g of the top plate 49 and the housing 57 to which it is connected provides firstly the chamber 52 for the motor 64 and the fan 65, and secondly a chamber 66 in which i8 mounted a spring loaded reel 67 for the electric supply cable 68 of the appliance.
~he lower cleaner head casing 47 is elongated in shape and extends across the width Or the appliance having a pair of spaced up-standing arms 69 and 70 which are pivotally attach~d to the casing 11 by means of pivot l pins 71 located within sl~ts in the bottom ¦ housing 57. ~he casing 47 is provided with the ¦ 20 exit pipe 46 previously mentio~ed and also formed with a chamber 72 provided by walls 73 upstanding from the casing 47 and which slidably , 1 ~ 62362 , _ 14 -engage the lower wall of the housing 57 around the aperture 53.
~ he cleaner head casIng 47 furthermore ha~
a longitudinal open-sided slot 74 in which is located a rotatable brush unit 75. ~he brush unit comprises opposite sets of bristles and is mounted on a longitudinal shaft 76 pivotally mounted in the end walls 77 of the casing. ~he shart 76 al~o supports the plates 78 which are toothed and one of which comprises a ratchet which i8 engaged by a pawl 79 during one direc-tion Or rotation of the ~rush unit.
During forward movement of the appliance as shown in Figure 9 the brush unit 75 rotates free~y while in contact with the carpet, but - during reverse movement as shown in ~igure 10 the pawl 79 engages a ratchet tooth 80 on the correspondIqg plate 78 so as to prevent reverse movement of the brush unit 75 and which thereb~
provides a brushing effect to the carpet.
During rotation of the brush unit 75 during a forward movement of the appliance, the opposite ~.. .
~` '' ~ ~
1 1 6236~
.
- 15 _ sets of bristles preferably passed between spaced plates 81 (see particularly ~igure ~) so as to remove therefrom any accumulated fluff and other dirt which is then sucked into the appliance through the pipe 46.
As previously mentioned the vacuum cleaning appliance of the invention as shown ~n the drawings is primarily intended for operation as an upright type cleaner, the appliance being manoeu~red by the handle 20 on the end of the tubular pipe 19 which fits the socket in the extension 18 of the motor casing 11.
~he invention however provides that the appliance may be quickly and simply converted for operation as a cylInder t~pe cleaner and vice versa, merel~ by the remo~al and insertion of the tubular pipe or wand 19 in the socket of the casing extension 18.
~he constructional features which enable this change over are sh9wn more clearl~
Figures 5 to 7 of the drawings.
~ .. .
.. , . . . .... _ ~ ~, . . . . . .
~ 1 623~2 - 16 - . :
Figure 5 shows the pipe or wand 19 inserted in the extension 18 which provides an open socket 82 for slidably receiving the lower end of the pipe. ~he socket 82 provides an end seat 83 for the end of the pipe 19, but in its operating mode as an upright cleaner as shown in ~igure 5 the end of the pipe is held spaced from the seat 83 by a valve device shown generally by the refere~ce 85.
~he valve device 85 controls an aper-ture 84 in the side wall of the socket 82 which communicates the socket with the inlet pipe 48 of the appliance.
~he valve de~ice is pivotally mounted at 86 on the casing and it comprises a valve member 87 normally closing the aperture 84.
At the other side of the pivot point 86 the valve device has an open sided housing 88 in which is mounted a compression spring 89 normally urging the valve device in an a~ti-clockwise direction to open the aperture 84.
A switch member 90 is also mounted pivotally , , ~ , ~ , , ~ , . .. . .. ..
~623~2 7 _ on the valve device and is movable relatively thereto. ~he switch member 90 is formed with a bore which contains a compression spring 94 acting against a slidable p1unger 93.
When the appliance is in its upright mode of operation the pipe 19 is located as shown in Figure 5 with the corner edge 91 of the switch member 90 engaging a groove 92 in the pipe 19. In this position the valve member 87 has closed the aperture 84 and the plunger 93 has engaged a part Qf the pivot 86 which is on that side of the pivot line adjacent the housing 88. In this position the switch member 90 i6 locked into position so that anti-1~ clockwise movement of the switch member and valve device is prevented and this retains the pipe 19 firmly in position to act as a handle to manoeuvre the appliance.
In order to convert the appliance to a cyli~der type cleaner the pipe 19 i8 firstly pu~hed downwardly In the socket 82 into the seat 83 as shown in Figure 6 of the drawings.
As the pipe 19 moves downwardly the switch member pivots clockwise relatively to the valve device and this re-engages the plunger 93 on the opposite side of the line from the pivot 86. The plunger 93 now holds the switch member 90 in the position shown in Figure 6 which allows for uurestricted removal of the pipe 19 upwardl~ from the socket 82.
As the pipe 19 moves upwardly the valve device 85 pivots anti-clockwise under the action of its spring 89 to the position shown in Figure 7. In this position the - ~al~o. member 87 engages the top edge of the wall of the pipe 48 to allow the plunger to re-engage the opposite side of the line from the pivot point 86 which thus allows anti-clockwise pivotal movement of the ~witch member 90 relative to the valve device. This sets the switch member for subsequent engage-ment with the pipe 19 when the pipe is reinsertedin the socket 82 for conversion to the upright mode of operation of the appliance.
, . .
I 1~2362 In this cylinder mode of operation as shown in ~igure 7 the pipe 19 is now connected through the aperture 84 directly with the passageway entering the cleaner unit. The valve member 87 now closes the inlet connection to the cleaner head and by slidably moving the pipe 19 to the end of the surroundi~g flexible hose 21 the open end of the pipe handle 20 can be used as a cleaner head and may be fitted with various attachments in the conventional manner. ~he pipe 19 is retained in a sealing tight manner in the outer end of the hose 21 by a cuff 95 which permits sliding of the pipe 19 and the lock~ng therein of the end of the pipe by means of the groove 92.
Although in the preferred embodime~t as described above the change-over from cylinder to upright mode of operation and vice versa is effected by mcvement of the wand handle it will be understood that entirely separate control of the chan~e-over valve may be incorporated in the appliance. For example, the valve device !
~ 1 623~2 85 may be actuated manually from the exterior of the casing or it may be controlled electri-cally from the handle of the appliance. In such arrangements the wand handle would be fitted in the flexible hose to engage the locating socket as previousl~ described.
Referring now to Figure 2 of the drawings the pipe or wand 19 is slidabl~
mounted in ho3e 21 and at its inner or lower end it i8 fitted with a fixed sleeve 96. ~he hose 21 i8 connected at its lower end to the socket 82 b~ a cuff 97, the hose having a PVC sleeve 98 bonded to the cuff.
The upper end of the hose includes a further PVC sleeve 99 bonded to the cuff 95 which includes a felt or similar seal 100 in sliding contact with pipe 19. In ~igure 2 pipe 19 i8 show~ in the in~erted or upright mode of operation of the appliance. In the conversion of the appliance to its cyl~nder mode pipe 19 ~lide~ relative to cuff 95 until the upper edge 101 of sleeve 96 engages surface 102 of upper cuff 95. The arrangement ,, ~ ,, . . .. . , ~
1 1 6236~
prevents the removal of pipe 19 from hose 21 but the be~elled edge 101 enables the hose to be removed if required by force. The arrange-ment as described is of course applicable to - 5 an~ conventional cylinder type appliance for locating the wand when not in use.
In order to re-convert the appliance for upright mode of operation the pipe 19 is merely re-i~serted slidably within the short upright tubular casing 82. This manoeuvre is generally facilitated by closing the open end of the pipe handle ~0 while the fan is oper-ating~ the resulting suction acting to straighten the hose 21 which enables the pipe 19 to be slidabl~ moved therein without difficulty.
Claims (12)
1. A vacuum cleaning appliance comprising:
a main casing having an air passageway therein containing a motor driven suction fan unit, a floor engaging section containing a first inlet for dirt laden air and selectively communi-cating with said passageway, a second inlet for dirt laden air selectively communicating with said passageway, said second inlet comprising a socket, a tubular member having a first end coupled to said socket and a second end, a hollow pipe member at least partially housed within said tubular member, a lower end Or said pipe member being detachably inserted into or removed from said socket, said lower end of said pipe member being connected with said socket through said tubular member when removed from said socket, an upper end of said pipe member extending beyond said second end of said tubular member and forming a handle for said appliance when said lower end of said pipe member is inserted into said socket, and a valve device operable in response to the insertion into or removal from said socket of said pipe member for connecting said passageway select-ively with one of said first and second inlets.
a main casing having an air passageway therein containing a motor driven suction fan unit, a floor engaging section containing a first inlet for dirt laden air and selectively communi-cating with said passageway, a second inlet for dirt laden air selectively communicating with said passageway, said second inlet comprising a socket, a tubular member having a first end coupled to said socket and a second end, a hollow pipe member at least partially housed within said tubular member, a lower end Or said pipe member being detachably inserted into or removed from said socket, said lower end of said pipe member being connected with said socket through said tubular member when removed from said socket, an upper end of said pipe member extending beyond said second end of said tubular member and forming a handle for said appliance when said lower end of said pipe member is inserted into said socket, and a valve device operable in response to the insertion into or removal from said socket of said pipe member for connecting said passageway select-ively with one of said first and second inlets.
2. A vacuum cleaning appliance as claimed in claim 1, wherein said valve device comprises a valve member which is pivotally mounted at the point of coupling of the socket with the air passageway, said valve member being spring urged normally into a position closing that part of said passageway communicating with said first air inlet in said floor engaging section.
3. A vacuum cleaning appliance as claimed in claim 2, wherein said valve member is engageable by said hollow pipe member when said lower end of said pipe member is inserted in said socket and is pivoted thereby to close the entrance of said socket with said air passageway.
4. A vacuum cleaning appliance as claimed in claim 3, wherein said valve member includes a catch device for fixedly engaging said lower end of said hollow pipe member when the latter is inserted in said socket so as to retain said pipe member in a position where it acts as a handle for the appliance.
5. A vacuum cleaning appliance as claimed in claim 4, wherein said catch device is pivotally mounted in said valve member and is adapted to hold said hollow pipe member with the lower end of said pipe spaced from the end of said socket, and said catch device is releasable by downward movement of said pipe member in said socket to pivot said catch device relative to said valve member anl permit removal of the lower end of said pipe member from said socket.
6. A vacuum cleaning appliance as claimed in claim 1, wherein said tubular member is a flexible hose and said hollow pipe member is tele-scopically mounted within the flexible hose section.
7. A vacuum cleaning appliance as claimed in claim 1, wherein air passing through said fan unit is discharged into the atmosphere through a cleaner head provided at said floor engaging section.
8. A vacuum cleaning appliance as claimed in claim 7, wherein said cleaner head of the floor engaging section includes a rotating brush unit which includes a pawl device preventing rotation of the brush unit during one direction of movement of the appliance.
9. A vacuum cleaning appliance as claimed in claim 8, wherein the bristles of the brush unit pass between spaced plates during rotation so as to remove accumulated dirt.
10. A vacuum cleaning appliance comprising:
a main casing having an air passageway therein containing a motor-driven suction fan unit, a socket communicating with said passageway and providing an inlet for dirt laden air, a flexible hose section having a first end fixedly secured to said socket and a second end, and a hollow pipe member connected to slide telescopically within said flexible hose section, said hollow pipe member having a lower end which is engageable with said socket when said pipe member is fully retracted into said flexible hose section and with said second end of said flexible hose section when said pipe member is fully extended.
a main casing having an air passageway therein containing a motor-driven suction fan unit, a socket communicating with said passageway and providing an inlet for dirt laden air, a flexible hose section having a first end fixedly secured to said socket and a second end, and a hollow pipe member connected to slide telescopically within said flexible hose section, said hollow pipe member having a lower end which is engageable with said socket when said pipe member is fully retracted into said flexible hose section and with said second end of said flexible hose section when said pipe member is fully extended.
11. A vacuum cleaning appliance as claimed in claim 10, wherein said hollow pipe member is retained in said socket by a releasable catch device, said hollow pipe member when so located in said socket providing at an upper end thereof a handle for said appliance.
12. A vacuum cleaning appliance as claimed in claim 11, wherein said hollow pipe member functions as an inlet for dirt laden air when said lower end thereof is removed from said socket.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8010098 | 1980-03-26 | ||
| GB8010098 | 1980-03-26 | ||
| US06/140,497 US4373228A (en) | 1979-04-19 | 1980-04-15 | Vacuum cleaning appliances |
| US140,497 | 1980-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1162362A true CA1162362A (en) | 1984-02-21 |
Family
ID=26274968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000373856A Expired CA1162362A (en) | 1980-03-26 | 1981-03-25 | Vacuum cleaning appliances |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0037674B1 (en) |
| CA (1) | CA1162362A (en) |
| DE (1) | DE3171655D1 (en) |
| DK (1) | DK137581A (en) |
| ES (1) | ES8205550A1 (en) |
| HK (1) | HK82386A (en) |
| MY (1) | MY8700109A (en) |
| NO (1) | NO152772C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5267371A (en) * | 1992-02-19 | 1993-12-07 | Iona Appliances Inc. | Cyclonic back-pack vacuum cleaner |
| US5558697A (en) * | 1992-12-08 | 1996-09-24 | Notetry Limited | Dual cyclonic vacuum cleaner |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR82013B (en) | 1983-07-08 | 1984-12-12 | Notetry Ltd | |
| US4573236A (en) * | 1983-07-08 | 1986-03-04 | Prototypes, Ltd. | Vacuum cleaning appliances |
| SE8502774D0 (en) * | 1985-06-05 | 1985-06-05 | Stefan Moszkowski | SUCTION CHANNEL FOR AIR TRANSPORT |
| GB2342282B (en) * | 1998-10-08 | 2001-09-26 | Notetry Ltd | Changeover valve |
| GB9822001D0 (en) * | 1998-10-08 | 1998-12-02 | Notetry Ltd | A cleaner head assembly for a vacuum cleaner |
| GB9822005D0 (en) * | 1998-10-08 | 1998-12-02 | Notetry Ltd | A cleaner head assembly for a vacuum cleaner |
| GB2344777A (en) * | 1998-12-18 | 2000-06-21 | Notetry Ltd | Horizontal cyclonic separator with single fin or baffle |
| GB2344751B (en) * | 1998-12-18 | 2002-01-09 | Notetry Ltd | Vacuum cleaner |
| GB9917232D0 (en) | 1999-07-23 | 1999-09-22 | Notetry Ltd | Method of operating a floor cleaning device |
| US6607572B2 (en) | 2001-02-24 | 2003-08-19 | Dyson Limited | Cyclonic separating apparatus |
| GB2416297A (en) | 2004-07-22 | 2006-01-25 | Dyson Ltd | Wand cap handle assembly for a cleaning appliance |
| GB2416296B (en) | 2004-07-22 | 2007-06-27 | Dyson Ltd | Handle assembly for a cleaning appliance |
| US7870637B2 (en) * | 2004-12-10 | 2011-01-18 | Techtronic Floor Care Technology Limited | Stacked tank arrangement for a cleaning apparatus |
| GB2440718B (en) * | 2006-08-08 | 2010-10-13 | Dyson Technology Ltd | Handle assembly for a cleaning appliance |
| GB2455811B (en) | 2007-12-22 | 2012-08-01 | Dyson Technology Ltd | Wand assembly for a cleaning appliance |
| DE102012208685A1 (en) | 2012-05-24 | 2013-11-28 | BSH Bosch und Siemens Hausgeräte GmbH | Nozzle for vacuum cleaner, has brush roller mounted relative to nozzle in rotating manner, where brush roller is physically separated from vacuum air guide by partition in housing, and is surrounded by roller compartment |
| EP4056088A1 (en) * | 2021-03-09 | 2022-09-14 | Candy Hoover (Suzhou) Co. Ltd. | Floor cleaning head |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7401147U (en) * | 1974-04-18 | Ringler B | Hand-operated suction device | |
| US2171248A (en) * | 1935-02-21 | 1939-08-29 | Berkel Patent Nv | Vacuum cleaning apparatus |
| GB479455A (en) * | 1935-12-23 | 1938-02-07 | Hoover Holding Company Ltd | Improvements in or relating to suction cleaners |
| GB514702A (en) * | 1937-06-05 | 1939-11-15 | Hoover Ltd | Improvements in or relating to suction cleaners |
| US2180694A (en) * | 1938-08-08 | 1939-11-21 | Walter C Reed | Vacuum cleaner |
| US2394798A (en) * | 1944-04-18 | 1946-02-12 | Mcneal Irene | Vacuum-type dusting mop |
| DE1927723U (en) * | 1965-07-21 | 1965-11-25 | Siemens Elektrogeraete Gmbh | CLEANING DEVICE. |
| DE1703186A1 (en) * | 1968-04-13 | 1971-04-08 | Emil Wittern | Vacuum cleaner with controlled circulating suction flow |
| US3675268A (en) * | 1970-05-19 | 1972-07-11 | Whirlpool Co | Vacuum cleaner |
| FR2300535A1 (en) * | 1975-02-17 | 1976-09-10 | Dupoyet Guy | Vacuum cleaner with air recycled to suction nozzle - has return tube arranged for discharging around nozzle or concentrically through nozzle |
| NL7613475A (en) * | 1976-12-03 | 1978-06-06 | Philips Nv | VACUUM CLEANER. |
| US4155143A (en) * | 1977-12-19 | 1979-05-22 | The Hoover Company | Separable handle for cleaner |
-
1981
- 1981-03-24 DE DE8181301255T patent/DE3171655D1/en not_active Expired
- 1981-03-24 EP EP81301255A patent/EP0037674B1/en not_active Expired
- 1981-03-25 CA CA000373856A patent/CA1162362A/en not_active Expired
- 1981-03-25 ES ES501170A patent/ES8205550A1/en not_active Expired
- 1981-03-25 NO NO811013A patent/NO152772C/en unknown
- 1981-03-26 DK DK137581A patent/DK137581A/en not_active Application Discontinuation
-
1986
- 1986-10-30 HK HK823/86A patent/HK82386A/en unknown
-
1987
- 1987-12-30 MY MY109/87A patent/MY8700109A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5267371A (en) * | 1992-02-19 | 1993-12-07 | Iona Appliances Inc. | Cyclonic back-pack vacuum cleaner |
| US5558697A (en) * | 1992-12-08 | 1996-09-24 | Notetry Limited | Dual cyclonic vacuum cleaner |
Also Published As
| Publication number | Publication date |
|---|---|
| NO152772C (en) | 1985-11-20 |
| ES501170A0 (en) | 1982-07-01 |
| DK137581A (en) | 1981-09-27 |
| NO811013L (en) | 1981-09-28 |
| MY8700109A (en) | 1987-12-31 |
| EP0037674A1 (en) | 1981-10-14 |
| ES8205550A1 (en) | 1982-07-01 |
| NO152772B (en) | 1985-08-12 |
| DE3171655D1 (en) | 1985-09-12 |
| EP0037674B1 (en) | 1985-08-07 |
| HK82386A (en) | 1986-11-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |