CN1973749A - Electric vacuum cleaner - Google Patents
Electric vacuum cleaner Download PDFInfo
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- CN1973749A CN1973749A CN 200610160567 CN200610160567A CN1973749A CN 1973749 A CN1973749 A CN 1973749A CN 200610160567 CN200610160567 CN 200610160567 CN 200610160567 A CN200610160567 A CN 200610160567A CN 1973749 A CN1973749 A CN 1973749A
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- electric fan
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Abstract
The present invention provides an electromotion cleaner with easily operation which can tell user whether the display/report device for reporting the existence of dust is in normal or not. The cleaner comprises a handle operation unit (operation assembly) 4 for drive the electromotion fan which provides suction force, a dust detecting device 11 capable of detecting the existence of dust, a control device 9 switching the suction force of the fan in several degrees by receiving the signal from the dust detecting device, and a display/report device 12 which receives signal from the dust detecting device and then on which the information can be displayed/reported. When user turns on the cleaner by using the handle operation unit after electrifying, the signal coming from the control device and dust detecting device makes the display/report device work for a while irrespectively. Then user can know whether the display/report device is working in normal before cleaning work.
Description
Technical field
The present invention relates to a kind of electric dust collector, more particularly, relate to wherein dust is detected, shows/control device reported.
Background technology
The open communique spy of Japan Patent opens a kind of existing electric dust collector has been shown among the 2002-248070.As shown in Figure 2, the inside of dust catcher body 1 is provided with electric fan 2 and the control device 9 that has signal processing unit.Also be provided with in the above-mentioned electric dust collector: the flexible pipe 3 that handle operating unit 4 and dust catcher body 1 are connected; Be arranged on the motor (not shown) of suction nozzle 6 inside; Thereby under this Motor Drive, rotate the rotating brush that dust has been swept; With the extension pipe 5 that suction nozzle 6 and handle operating unit 4 are connected.Can control the attraction of electric fan 2 and the rotation/stall of motor by handle operating unit 4.As shown in Figure 7, the handle operating unit is provided with console switch (operating position) such as " pass ", " automatically ", " by force ", " weak ", can be to selecting in the multiple attraction.On " by force " operating position, generally the current sensing means by electric fan 2 detects air quantity, in needs, carry out control again, can prevent the situation that causes air quantity decline, attraction to reduce because of dust control of dust amount is excessive like this attraction raising.Dust catcher in recent years begins again to be used to can detect these characteristics of air quantity by electric current, when dust control of dust amount too much causes current value to descend and drops under the predefined current value, when considering ease of use, carry out following control, promptly, to the prompting that dust is outwelled in user's generation, attraction is reduced.In addition, also be provided with the dust detection 11 that detects dust at control of dust passage (specifically being in the close connecting tube of dust catcher body 1 side in the inside of flexible pipe 3).Reach being controlled to be of carrying out on " weak " position in " automatically ": show by display unit (being positioned on the handle operating unit) then when monitoring dust that the attraction when increasing dust suction simultaneously improves dust catching efficiency.
But, adopt above-mentioned existing apparatus to constitute, after the user begins to carry out dust suction, if clean ground, owing to there is not dust to pass through, will detects less than dust in the dust detection 112 and exist.Even if such state only continues tens seconds, the user is not worked to indicator lamp feel uneasy, may suspect whether dust catcher has been out of order.
In addition, in common dust catcher, after inserting attaching plug in the socket, dust catcher does not demonstrate the ready state that whether is in, the user does not carry out actual dust suction operation by the handle operating unit, just can't understand dust catcher and be to be in normal condition, still to be in malfunction.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, be provided with in the electric dust collector of the present invention: the dust storage chamber of collecting dust; Produce the attraction electric fan; Drive the operating means of described electric fan; Detect the dust detection of dust; The control device that acceptance changes in a plurality of grades from the signal of described dust detection, with the attraction of described electric fan; With accept from the signal of described dust detection, the demonstration/annunciator that shows/report.Behind user's power connection, handle described operating means, when driving described electric fan and beginning to carry out the dust suction operation, described control device and signal from described dust detection irrespectively make described demonstration/annunciator work certain during.Like this, just can inform the user reliably when dust suction begins: dust detection is in operate as normal.
The technique effect that the present invention produces is as follows.Electric dust collector of the present invention can whether normal running be confirmed reliably to demonstration/annunciator of showing after the output of accepting dust detection/reporting.
The specific embodiment of the invention is summarized as follows.Be provided with in the electric dust collector in the present invention's the 1st scheme: the dust storage chamber of collecting dust; Produce the attraction electric fan; Drive the operating means of described electric fan; Detect the dust detection of dust; The control device that acceptance changes in a plurality of grades from the signal of described dust detection, with the attraction of described electric fan; With accept from the signal of described dust detection, the demonstration/annunciator that shows/report.Behind user's power connection, handle described operating means, when driving described electric fan and beginning to carry out the dust suction operation, described control device and signal from described dust detection irrespectively make described demonstration/annunciator operation certain during.Like this, whether the user confirm in operate as normal dust detection when dust suction begins, thereby make the user can be fully recognized that the operation of dust detection, carries out dust suction with very high efficient.
The 2nd scheme is, is set to during certain described in the 1st scheme: the stipulated time of counting when beginning to operate receive the signal from operating means from electric fan after.Whether normal running is confirmed to demonstration/annunciator without any inharmonious sense ground like this, just can to make the user.
The 3rd scheme is, during the 1st or the 2nd scheme certain in, attraction is controlled so as to less than by the selected attraction of described operating means.Like this, the operating conditions of demonstration/annunciator can be informed the user reliably.
The 4th scheme is, also be provided with the air quantity checkout gear that is used to detect the indoor amount of dust of control of dust in the 1st scheme, describedly being set to during necessarily that the signal of when beginning work and dust detection makes irrespectively that demonstrations/annunciator operates: receive signal from operating means from electric fan and begin to operate time till playing air quantity and settling out.Like this, under any condition, can carry out stable demonstration.
Electric dust collector in the present invention's the 5th scheme comprises: the dust storage chamber of collecting dust; Produce the attraction electric fan; Drive the operating means of described electric fan; Detect the dust detection of dust; Acceptance is from the signal of described dust detection, control device that the attraction of described electric fan is changed in a plurality of grades; With accept from the signal of described dust detection, the demonstration/annunciator that shows/report.Described control device after power connection with the signal of described dust detection irrespectively make described demonstration/annunciator work certain during.Like this, whether the operation that just can identify demonstration/annunciator before operating means is operated is normal, also can identify the on-state of power supply simultaneously reliably.
Description of drawings
Fig. 1 is the circuit block diagram of the electric dust collector in the embodiment of the invention 1,
Fig. 2 is the schematic appearance of this electric dust collector,
Fig. 3 is the detailed circuit diagram of the circuit block diagram of this electric dust collector,
Fig. 4 (a) is the dust detection of this electric dust collector and the block diagram of peripheral circuits, Fig. 4 (b) is the input power of dust detection and the graph of a relation between the elapsed time, Fig. 4 (c) is the output signal of dust detection and the graph of a relation between the elapsed time
Fig. 5 is the another kind of circuit block diagram of this electric dust collector,
Fig. 6 is the summary construction diagram of the dust detection of this electric dust collector,
Fig. 7 is the schematic diagram of the electric dust collector handle operating unit in the embodiment of the invention 2.
In the above-mentioned accompanying drawing, 2 is electric fan, and 4 is handle operating unit (operating means), and 9 is control device, and 11 is dust detection, and 12 are demonstration/annunciator, and 13 is timer.
The specific embodiment
Come with reference to the accompanying drawings some embodiments of the present invention are elaborated.It is pointed out that such embodiment does not have the effect that limits scope of the present invention.
(embodiment 1)
Fig. 1 is the circuit block diagram of the electric dust collector among the present invention the 1st embodiment, and Fig. 2 is the schematic appearance of this electric dust collector.
Among Fig. 2,1 is the electric dust collector body, and its inside is provided with and is used for the electric fan 2 that produces attraction, dust collected the dust storage chamber (not shown).3 is the flexible pipe that handle operating unit 4 and dust catcher body 1 are connected, and handle operating unit 4 is provided with console switch (operating position) such as " by force ", " automatically ", " weak ", and the attraction intensity of described electric fan 2 is switched.Thereby 6 for coming in contact the suction nozzle that the dust on the swept surface etc. is picked up with ground, the inside of suction nozzle 6 is provided with and is used for rotating brush (not shown) that the dust on the swept surface has been swept and the rotating brush motor (not shown, as to abbreviate " motor " below as) that drives described rotating brush.Described motor drives described rotating brush by belt (not shown) etc., perhaps also motor can be arranged on the inside of described rotating brush, waits by the gear (not shown) to drive described rotating brush.5 is the extension pipe that can stretch, and is used for described suction nozzle 6 and described flexible pipe 4 are communicated with.
When carrying out the dust suction operation, at first handle operating unit 4 is operated, made described electric fan 2 and rotating brush motor begin operation.Like this, the dust on the swept surface has been swept, has been sucked by suction nozzle 6, and these dusts pass extension pipe 5, flexible pipe 3, is sent in the electric dust collector body 1, and is collected in the dust storage chamber (not shown) that is arranged on electric dust collector body 1 inside.Simultaneously, discharge dust-absorbing airflow from described electric dust collector body 1.Be built-in with the control circuit 9 of reception in the dust catcher body 1 from the operation of the operation signal of described handle operating unit 4 and then control electric fan 2 and motor.In addition, can also install the little suction nozzle 10 that narrow slit is carried out dust suction by mounting or dismounting mode freely on the main part of suction nozzle 6.On " automatically " position, can mode of operation be switched according to states such as " liftoff ", " landing " of suction nozzle 6, " little suction nozzle dust suctions ".
Be provided with in the air intake passage and be used for the dust detection 11 that the situation of passing through to dust detects.When not detecting dust in the dust detection 11, then reduce the operand power of described electric fan 2 and motor; And when detecting dust, then improve the attraction of described electric fan 2 and motor.Like this, when not having dust, can suppress the electric energy consumed, realize energy-conservation.
In addition, as shown in Figure 2, the electric dust collector in the present embodiment can be divided into electric dust collector body 1, the flexible pipe 3 of handle operating unit 4 is housed, extension pipe 5 and suction nozzle 6 these 4 parts.2 for producing the electric fans of attraction, and 9 for carrying out the control device of phase controlling to this electric fan 2, the 4 handle operating units for attraction as described above, as to be used to select described electric fan 2.In addition, be provided with micro computer in the control device 9 that the power of supplying with electric fan 2 and motor is controlled, this control device 9 accept from handle operating unit 4 switching manipulation information, from the dust of dust detection 11 current information by information and electric fan 2, produce the triggering signal that is used for motor and electric fan 2 are carried out phase controlling according to these information again, the power of supplying with electric fan 2 and motor is controlled.Be provided with photocell and light receiving element in the dust detection 11, can block a part of light quantity when dust passes, such light quantity variation is transformed into voltage change; When voltage change meets or exceeds setting value, promptly be input in the micro computer 15 as impulse waveform.12 are demonstration/annunciator, and when described dust detection 11 (dust sensor) detects dust, its signal will be sent in the described micro computer, and described micro computer will show to the user/report by demonstration/annunciator 12.18 for providing the mains supply of power to electric dust collector.
Operational circumstances and effect to electric dust collector with above formation is described below.When the user carries out the dust suction operation, at first attaching plug to be inserted in the mains supply socket of (as exchanging 100V or 220V), handle the switch (as " by force ", " weak ", " automatically " etc.) on the described handle operating unit 4 afterwards, carry out the dust suction operation.The formation of handle operating unit 4 as shown in Figure 3, its inside is provided with a plurality of switch SW 1～SW3 and resistance r1～r3.The circuit of body 1 side changes by the branch pressure voltage on the built-in resistor R2 earlier and identifies the user and carried out what operation, send signal from micro computer to electric fan 2 and motor then, electric fan 2 and motor are used with user's operation carried out the dust suction operation to corresponding attraction.As shown in Figure 3, the inside of little suction nozzle 10 is provided with resistance r6 and r7, the variation of micro computer by the branch pressure voltage on the resistance R in the circuit that is built in body 1 one sides 2 identify motor whether in rotation, whether just operating, and the attraction of electric fan 2 is carried out control corresponding with little suction nozzle 10.
Here, for the rotation status of the on/off that identifies the safety switch 13 shown in Fig. 3 and motor and for the operation signal with the user transmits reliably, motor is provided with during the stall of certain hour.This be because, also exist resistance components in the flexible pipe 3, in the process of current direction motor, these resistance components can cause voltage to descend; Alternating component and flip-flop mix, and the handle operation signal can't normally be transmitted.In addition, in above-mentioned stopping period during certain, also can carry out identifying the operation of the situation of suction nozzle 6 simultaneously by branch pressure voltage.In addition, can also between mode of operations such as " by force ", " automatically ", " weak ", " pass ", switch by the switch SW 1～SW3 in the handle operating unit 4.When SW3 is " by force " when switch is pressed, micro computer will change by branch pressure voltage be discerned, and through the voltage of control electric fan 2 and motor is operated with phase place, thereby by phase control signal electric fan 2 and motor is operated." by force " position be for producing the position of maximum attraction, do not carry out the control that attraction changed by dust detection 11, and the operand power when filter does not stop up (calling open to the outside world in the following text) fully reaches the 900W degree.When dust was accumulated in dust storage chamber gradually, air quantity can descend, so the current value of electric fan 2 also can reduce.
Then, when switch SW 2 is that " automatic/weak " is when switch is pressed, promptly change the above-mentioned state that identifies by branch pressure voltage by micro computer, send signal to motor and electric fan 2 again, indication electric fan 2 and motor are operated according to phase control signal, so electric fan 2 and motor will be operated through the voltage of control by phase place." automatically " position is paid much attention to energy-conservation, belongs to the mode of operation of recommendation, can electric fan 2 and power of electric motor be changed according to the state of suction nozzle 6 with from the information of dust detection 11.Particularly, when the state of suction nozzle 6 is " liftoff ", the attraction of electric fan 2 will be reduced, and operate on the phase place of 275W when open; And under " landing " state, on the phase place of 440W, operate when open, so operand power can change.When using little suction nozzle, in order easily the dust in the gap to be picked up, on the phase place of 600W, work when open,, on the phase place of 275W, work when open with when prolonging pipe only.And in definite various operator schemes according to the state of suction nozzle 6, when the signal that receives from dust detection 11, input power all can rise, and key of the present invention is the operating conditions of this moment is controlled, and its details will be described below.When pushing SW2 once more, will be varied to " weak " position, on the phase place of 200W, work when open.Push SW2 continuously, can between " automatically " position and " weak " position, switch.
Under dust detection 11 did not have situation that signal sends here, the operation of carrying out on " automatically " position was as follows.Normal the time, when when a lot, then having a lot of impulse waveforms to be imported in the micro computer from the signal indication amount of dust of dust detection 11, again according to its number of pulses from the selected suitable value of a plurality of input power values that increase gradually; When air quantity is detected, only between 2 phase values, change, that is, if, then be operated on the phase value of 550W not from the detection signal of dust detection 11; If dust detection 11 has detection signal to send here, then be operated on the phase value of 750W.Electric current-air quantity characteristic under the phase value of 550W and 750W has carried out confirmatory experiment with the electric fan 2 of standard in advance, when electric current is equal to or less than the 1st setting electric current, judge that then decline has taken place air quantity, thereby send the prompting that the dust in the dust storage chamber is outwelled to the user; When electric current further descends, is less than or equal to the 2nd setting electric current, then input power is reduced, overflow from dust storage chamber to prevent dust.Consider factors such as stablizing of electric current variation, air quantity is being detected, when judging, preferably carrying out the detection about 5 seconds, and every about 1 minute, carrying out once.
Next, the operational circumstances to dust detection 11 and demonstration/annunciator 12 is described.At first, the user inserts attaching plug in the supply socket, and what suppose selection is " automatically " pattern.After this signal was input to described control device 9, it was " automatically " switch that control device 9 will identify what handled from above-mentioned branch pressure voltage value, and control device 9 is used with the suitable air quantity of " automatically " pattern thereupon described electric fan 2 is driven.Identical with the example of above-mentioned 550W phase value, control device 9 also will obtain signal from dust detection 11.But,, therefore make the described demonstration/annunciator 12 and the signal of described dust detection 11 irrespectively carry out work because this is after the user connects power supply handle operating unit 4 to be operated first.By making this demonstration/annunciator 12 carry out work, the output that is the operating in normally of demonstration/annunciator 12 that just can make the user understand described dust detection signal 11 are carried out.Here, demonstration/annunciator 12 when carrying out display operation, can take to light or glimmer in any mode, can produce same effect, extinguish state but include in the flashing mode, and identification easily.In addition, adopt at demonstration/annunciator 12 under the situation of auditory tone cueses, also sounding and loud any mode of stopping combination continuously can obtain same effect.
Under " automatically " operator scheme of described in front handle operating unit 4, make electric fan 2 according to when operating from the signal of control device 9, control device 9 also makes timer 13 work of being carried out timing the stipulated time.When the timing of this timer 13 reaches the stipulated time (as 3 seconds), output timing end signal in described control device 9,9 of control device stop driving to described demonstration/annunciator 12 according to this signal.By carrying out such operation, after power connection, when the user operated handle operating unit 4, above-mentioned demonstration/annunciator 12 was at first operated; Carried out behind the official hour in this operation, demonstration/annunciator 12 will stop again and the irrelevant operation of the output of described dust detection 11.In addition, particularly adopt under the situation of auditory tone cues at demonstration/annunciator 12, because the noise of the described electric fan 2 of working is very big, the sound that demonstration/annunciator 12 sends is difficult to not hear sometimes, therefore, carry out operating period at described timer 13, described control device 9 reduces the operand power (550w phase value) of electric fan 2 10%, promptly operates under the phase value of 495w.Like this, just the working condition of demonstration/annunciator 12 can be notified to the user more reliably.
Here, in the moment so that the moment of power connection starts working as described timer 13, begin official hour is carried out timing during promptly from power connection.So, in the stipulated time that from the user attaching plug is inserted in the supply socket, described demonstration/annunciator 12 will be operated.By making demonstration/annunciator 12 carry out such operation, can make the user when inserting attaching plug, just can know whether dust catcher is under the normal operating conditions.
As mentioned above, whether present embodiment reports by means of being used for whether dust detection 11 detects the demonstration/annunciator 12 of dust, can normally confirm this demonstration/annunciator 12.By the moment of the demonstration/report of staggering, whether operate as normal shows/reports to the dust collector host body can also to make this demonstration/annunciator.
(embodiment 2)
Fig. 7 is the schematic diagram of an example of handle operating unit 4 among expression the present invention the 2nd embodiment and demonstration/annunciator 12.Wherein, put on identical symbol, and omitted its description of carrying out with part identical among above-mentioned the 1st embodiment.
As shown in Figure 7, do not have in dust detection 11 under the situation of signal input, demonstrations/annunciator 12 is in usually and extinguishes state, if dust detection 11 has detected dust, then usefulness different states such as is lighted and shown.In dust catcher of the present invention, when being in the phase place of 550W, carrying out air quantity by current sensing means 14 by the electric current that flows through in the described electric fan 2 and detect.Air quantity being detected, when judging, considering factors such as stablizing of electric current variation, preferably carry out detection as about 5 seconds.Within these 5 seconds, if signal output is arranged, when operand power rises from dust detection 11, air quantity detects also in case interrupt, and restarts when by the time becoming the phase place of 550W once more again; When judging that total detection time is more than or equal to 5 seconds, then show/report and reduce the operation of input power., when air quantity detection end after meeting or exceeding 1 minute and become the phase place of 550W carried out air quantity again detect by micro computer (control device) 9 decisions the opportunity of carrying out the air quantity detection here.In addition, when demonstration/report stops and recovering from the operation that reduces input, detect too.
In sum, whether the electric dust collector among the present invention can normally confirm reliably to the operation of demonstration/annunciator of showing after the output of accepting dust detection/reporting, can be useful in widely to comprise family expenses, professional with in the multiple dust catcher of dust catcher.
Claims (5)
1. electric dust collector is characterized in that comprising:
Collect the dust storage chamber of dust;
Produce the attraction electric fan;
Drive the operating means of described electric fan;
Detect the dust detection of dust;
The control device that acceptance changes in a plurality of grades from the signal of described dust detection, with the attraction of described electric fan; With
Acceptance is from the signal of described dust detection, the demonstration/annunciator that shows/report,
Behind user's power connection, handle described operating means, when driving described electric fan and beginning to carry out the dust suction operation, described control device and signal from described dust detection irrespectively make described demonstration/annunciator work certain during.
2. the electric dust collector described in claim 1 is characterized in that: when the work beginning with describedly being set to during necessarily that the signal of dust detection makes irrespectively that demonstrations/annunciator operates: the stipulated time of counting when beginning to operate receive signal from electric fan after from operating means.
3. the electric dust collector described in claim 1 or 2, it is characterized in that: the signal of when beginning work and dust detection make irrespectively that demonstrations/annunciator operates described necessarily during in, attraction is controlled so as to less than by the selected attraction of described operating means.
4. electric dust collector as claimed in claim 1, it is characterized in that also being provided with the air quantity checkout gear that is used to detect the indoor amount of dust of control of dust, describedly being set to during necessarily that the signal of when beginning work and dust detection makes irrespectively that demonstrations/annunciator operates: receive signal from operating means from electric fan and begin to operate time till playing air quantity and settling out.
5. electric dust collector is characterized in that comprising:
Collect the dust storage chamber of dust;
Produce the attraction electric fan;
Drive the operating means of described electric fan;
Detect the dust detection of dust;
Acceptance is from the signal of described dust detection, control device that the attraction of described electric fan is changed in a plurality of grades; With
Acceptance is from the signal of described dust detection, the demonstration/annunciator that shows/report,
Described control device after power connection with the signal of described dust detection irrespectively make described demonstration/annunciator work certain during.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005341745A JP2007143818A (en) | 2005-11-28 | 2005-11-28 | Vacuum cleaner |
| JP2005341745 | 2005-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1973749A true CN1973749A (en) | 2007-06-06 |
Family
ID=38124308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610160567 Pending CN1973749A (en) | 2005-11-28 | 2006-11-23 | Electric vacuum cleaner |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2007143818A (en) |
| CN (1) | CN1973749A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD840615S1 (en) | 2016-10-14 | 2019-02-12 | Tti (Macao Commercial Offshore) Limited | Handheld vacuum cleaner |
| USD844265S1 (en) | 2016-10-14 | 2019-03-26 | Tti (Macao Commercial Offshore) Limited | Handheld vacuum cleaner |
| US10470625B2 (en) | 2016-04-15 | 2019-11-12 | Tti (Macao Commercial Offshore) Limited | Vacuum cleaner and filter for a vacuum cleaner |
| USD911642S1 (en) | 2017-12-05 | 2021-02-23 | Techtronic Floor Care Technology Limited | Housing for a filter |
| CN113545703A (en) * | 2021-07-26 | 2021-10-26 | 北京小狗吸尘器集团股份有限公司 | Fluid pipeline assembly, dust collection cup body and cleaning equipment |
| CN114206515A (en) * | 2019-09-06 | 2022-03-18 | 三星电子株式会社 | Cleaner and control method thereof |
| US11607637B2 (en) | 2018-08-31 | 2023-03-21 | Milwaukee Electric Tool Corporation | Power tool including an air filter and debris collector |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5916990B2 (en) * | 2010-10-29 | 2016-05-11 | 株式会社東芝 | Electric vacuum cleaner |
| CN102462451B (en) * | 2010-11-10 | 2015-04-22 | 财团法人工业技术研究院 | Vacuum cleaner and operation method thereof |
| KR101714195B1 (en) * | 2015-08-21 | 2017-03-08 | 엘지전자 주식회사 | Vacuum cleaner |
-
2005
- 2005-11-28 JP JP2005341745A patent/JP2007143818A/en active Pending
-
2006
- 2006-11-23 CN CN 200610160567 patent/CN1973749A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10470625B2 (en) | 2016-04-15 | 2019-11-12 | Tti (Macao Commercial Offshore) Limited | Vacuum cleaner and filter for a vacuum cleaner |
| US10531772B2 (en) | 2016-04-15 | 2020-01-14 | Tti (Macao Commercial Offshore) Limited | Handheld vacuum cleaner |
| US10743731B2 (en) | 2016-04-15 | 2020-08-18 | Tti (Macao Commercial Offshore) Limited | Vacuum filter |
| US11363922B2 (en) | 2016-04-15 | 2022-06-21 | Techtronic Floor Care Technology Limited | Vacuum cleaner and filter for a vacuum cleaner |
| USD840615S1 (en) | 2016-10-14 | 2019-02-12 | Tti (Macao Commercial Offshore) Limited | Handheld vacuum cleaner |
| USD844265S1 (en) | 2016-10-14 | 2019-03-26 | Tti (Macao Commercial Offshore) Limited | Handheld vacuum cleaner |
| USD911642S1 (en) | 2017-12-05 | 2021-02-23 | Techtronic Floor Care Technology Limited | Housing for a filter |
| US11607637B2 (en) | 2018-08-31 | 2023-03-21 | Milwaukee Electric Tool Corporation | Power tool including an air filter and debris collector |
| CN114206515A (en) * | 2019-09-06 | 2022-03-18 | 三星电子株式会社 | Cleaner and control method thereof |
| CN113545703A (en) * | 2021-07-26 | 2021-10-26 | 北京小狗吸尘器集团股份有限公司 | Fluid pipeline assembly, dust collection cup body and cleaning equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007143818A (en) | 2007-06-14 |
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Open date: 20070606 |