JP2013066621A - Attachment for vacuum cleaner and vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attachment for a vacuum cleaner that performs cleaning while reliably preventing suction of water or the like into an electric fan, and is improved in ease of use.SOLUTION: The attachment 11 is provided with a downstream-side air passage member 12, an upstream side air passage member 21, a driving fan 41, a suction fan 43, and a dust separation part 51. The downstream-side air passage member 12 is provided with a downstream-side fan-housing part 15 communicating with the suction opening of the body of a vacuum cleaner in which the electric fan is housed. The housing part 15 has an air inlet 17. The upstream side air passage member 21 is connected to the upstream side of the downstream-side air passage member 12. The upstream side air passage member 21 is provided with an upstream side fan-housing part 28, where an air outlet 29, is formed. The driving fan 41 housed in the housing part 15 is rotated due to a first airflow reaching the suction opening of the body from the air inlet. The suction fan 43 housed in the housing part 28 is rotated by the driving fan 41 to generate a second airflow emitted from the air outlet 29 through the upstream side air passage member 21 independent of the first airflow. The dust separation part 51 for separating dust and water from the air and retaining them, is disposed on the upstream side of the suction fan 43.

Description

  Embodiments of the present invention relate to a vacuum cleaner attachment used in communication with a main body suction port of a vacuum cleaner main body, and a vacuum cleaner including the attachment.

  If the electric blower accommodated in the cleaner body is exposed to the inhaled moisture, the electric blower may break down. For this reason, a general vacuum cleaner does not have a specification that can be used without any trouble even if it sucks moisture or the like (for example, liquid such as water or juice, mist, steam, and a food containing a lot of liquid).

  On the other hand, a wet type vacuum cleaner that can be used even if moisture or the like is sucked during cleaning is known as a conventional technique. In this type of wet vacuum cleaner, an air / water separator and a sewage tank are disposed upstream of the electric blower and in the main body of the cleaner. The steam separator separates the air-fuel mixture (including dirt, moisture, and air) introduced through the suction air passage from the suction port to the steam separator into moisture, etc. containing dirt, and air. Separate and allow the separated air to pass through. A sewage tank stores the water | moisture content etc. (sewage) which are isolate | separated by an air-water separator and fall. Therefore, moisture or the like does not reach the electric blower, and air separated by the steam separator is sucked into the electric blower.

  During cleaning, the vacuum cleaner body may be tilted. In such a situation, the possibility that the sewage stored in the sewage tank is sucked into the electric blower increases. Therefore, it is desired to reliably prevent unexpected suction of moisture or the like to the electric blower.

  Further, since the vacuum cleaner performs cleaning with the movement of the main body of the vacuum cleaner, it is desired to make the main body of the vacuum cleaner as compact as possible in order to improve usability.

  Furthermore, since the moisture sucked into the suction air passage from the suction opening to the air / water separator during cleaning contains dirt in the first place, the inner surface of the member forming the suction air passage is contaminated by dirty water or the like. It is. For this reason, when a cleaning worker wash | cleans the said member after cleaning and cleans the inner surface, if the length of the suction air path which becomes dirty is long, it will take time and effort to wash. Therefore, it is desired to improve this point and improve usability.

JP 2007-175122 A

  Embodiments provide an attachment for a vacuum cleaner that can be cleaned while reliably preventing moisture and the like from being sucked into an electric blower, and a vacuum cleaner that can improve usability It is in.

  In order to solve the above-described problem, the vacuum cleaner attachment of the embodiment includes a downstream air passage member, an upstream air passage member, a driving fan, a suction fan, and a dust separator. The downstream air passage member includes a downstream fan housing portion that communicates with the main body suction port of the cleaner body in which the electric blower is housed. The downstream fan housing has an air inlet. The upstream air passage member is continued to the upstream side of the downstream air passage member. The upstream air passage member includes an upstream fan accommodating portion in which an air outlet is formed. The driving fan accommodated in the downstream fan accommodating portion is rotated by the first airflow sucked into the main body inlet from the air inlet. The suction fan housed in the upstream fan housing section is rotated by a driving fan, and the second air stream exhausted from the air outlet through the upstream air passage member independently of the first air stream by the rotation of the suction fan. Is generated. It is characterized in that a dust separation part that separates and collects dust and moisture from the air is arranged upstream of the suction fan.

It is a perspective view which shows the vacuum cleaner which concerns on 1st Embodiment. It is sectional drawing which shows the attachment with which the vacuum cleaner of FIG. 1 is provided. It is sectional drawing which shows a part of attachment with which the vacuum cleaner which concerns on 2nd Embodiment is provided. It is a figure which shows schematically a part of attachment with which the vacuum cleaner which concerns on 3rd Embodiment is provided. It is sectional drawing shown in the assembled state of a part of attachment with which the vacuum cleaner which concerns on 4th Embodiment is provided. It is sectional drawing shown in the state which isolate | separated a part of FIG. It is a perspective view which shows the vacuum cleaner which concerns on 5th Embodiment. It is a perspective view which shows the vacuum cleaner which concerns on 6th Embodiment.

  Hereinafter, the vacuum cleaner of 1st Embodiment is demonstrated in detail with reference to FIG.1 and FIG.2.

  FIG. 1 is a perspective view showing an entire canister-type vacuum cleaner, for example. The vacuum cleaner 1 includes a cleaner body 2, an electric blower 3, a body dust collecting part such as a dust collection filter 4, and a suction hose 5. And a suction air passage body, for example, an attachment 11 or the like.

  Wheels are attached to the vacuum cleaner main body 2 so as to be freely movable on an indoor floor surface to be cleaned. The vacuum cleaner main body 2 has a main body lid 2a which forms an upper surface of the front portion and can be opened and closed. The vacuum cleaner main body 2 has a main body chamber (not shown) immediately below the main body lid 2a in the interior thereof, and the rear side of the main body chamber, in other words, the vacuum cleaner main body 2 is sucked and passes through the main body. A blower chamber (not shown) is provided on the downstream side of the main body chamber with reference to the airflow to be performed. In the blower chamber, an electric blower 3, a cord reel device (not shown), a control circuit for controlling the operation of the electric blower 3, and the like are accommodated. An air inlet (not shown) of the electric blower 3 communicates with the main body chamber.

  A main body inlet 2b (see FIG. 1) is provided on the front surface of the vacuum cleaner main body 2, for example. A dust collection filter 4 is disposed in the main body chamber of the cleaner body 2.

  When the dust collection filter 4 is cleaned without using the attachment 11, for example, when it is cleaned by sucking dust from the tip of the suction hose 5, or an extension pipe and a suction port (not shown) that are provided as standard equipment in the electric vacuum cleaner 1. It is provided for separating and capturing the sucked dust from the air when the body is used instead of the attachment 11 for cleaning.

  The illustrated dust collection filter 4 is, for example, a dust collection bag, and the inside thereof communicates with the main body suction port 2b. The dust collection filter 4 can be taken in and out of the main body chamber with the main body lid 2a being opened. The dust collection filter 4 is not limited to a dust collection bag, and may be any filter that can separate dust from the air, and the separated dust can be stored in the main body chamber.

  The suction hose 5 is formed by connecting a rigid main body connecting pipe 5b to one end of a flexible hose main body 5a and connecting a proximal pipe 5c to the other end of the hose main body 5a. ing.

  The hose body 5a has an electric wire (not shown) wound spirally along the hose body 5a. A plurality of terminal pins (not shown) are attached to the main body connecting pipe 5b, and the electric wires are connected to these terminal pins. The main body connection pipe 5b is inserted into the main body suction port 2b and detachably connected to the cleaner main body 2. Around the main body suction port 2b, a pin receiving bracket (not shown) to which the terminal pins are mechanically and electrically connected is disposed. This pin bracket is electrically connected to the control circuit.

  The hand tube portion 5c has a handle 5d that is gripped by a cleaning worker. An operation panel 5e is provided on the handle 5d. The operation panel 5e has a plurality of operation buttons. The electric wire is electrically connected to each operation button. When these operation buttons are pressed, input adjustment to the electric blower 3, stoppage thereof, and the like are controlled.

  Next, with reference to FIG.1 and FIG.2, the attachment 11 for vacuum cleaners is demonstrated.

  The attachment 11 includes a downstream side air passage member 12, an upstream side air passage member 21, a suction port body 31, a driving fan 41, a suction fan 43, and a dust separation unit 51.

  The downstream air passage member 12 includes a downstream air passage pipe 13 (see FIG. 1) and a downstream fan accommodating portion 15.

  The downstream side air duct 13 is a straight pipe. The rear end portion (downstream end portion) of the downstream side air duct tube 13 is detachably fitted to and connected to the distal end portion of the proximal tube portion 5c. Reference numeral 14 in FIG. 1 denotes a lock button that is provided in the proximal pipe portion 5c and that prevents the downstream side air duct 13 connected to the proximal operation portion 5c from coming off. Since the release prevention is released by pressing the lock button 14, the proximal pipe portion 5c and the downstream side air duct 13 can be separated in this released state.

  The downstream fan housing part 15 has a housing case 16 and a connecting cylinder part 18.

  The housing case 16 is a relatively short cylindrical case, and one end of the housing case 16 is opened, and the wall 16a is opposed to the one end opening. The cylindrical wall of the housing case 16 has a plurality of air inlets 17. These air inlets 17 are provided at regular intervals along the circumferential direction of the cylindrical wall.

  The connection cylinder part 18 protrudes from the wall part 16a toward the outside of the housing case 16. The end of the connecting tube portion 18 that is continuous with the wall portion 16a is a tapered tube, and the other portion is a straight tube portion. The straight pipe part of the connecting cylinder part 18 is detachably fitted to and connected to the front end part (upstream end part) of the downstream side air duct 13. In FIG. 1, reference numeral 19 denotes a lock button for preventing the connecting cylinder portion 18 connected to the downstream side air duct 13 from coming off. Since the release prevention is released by pressing the lock button 19, it is possible to separate the downstream side airway pipe 13 and the downstream side airway member 12 having the connecting cylinder part 18 in this released state.

  The attachment 11 is communicated with the main body suction port 2b via the suction hose 5 in a state where the connecting cylinder portion 18 of the downstream air passage member 12 is connected to the downstream air passage pipe 13. In addition, the connection cylinder part 18 can also be directly connected to the proximal pipe part 5c, and even in this case, the attachment 11 is communicated with the main body suction port 2b. Therefore, the attachment 11 may have a configuration in which the downstream side air duct 13 is omitted.

  The upstream air passage member 21 includes a first air passage tube 22, a second air passage tube 23, an upstream fan accommodating portion 28, and the like.

  The first air duct tube 22 is a straight tube, and its tip (upstream end) is opened. A vent 24 is formed in the middle portion of the first air duct 22 in the longitudinal direction, and an airflow guide 25 is provided. The airflow guide 25 is disposed obliquely in the first air duct 22 by partitioning the vicinity of the downstream side of the air vent 24 in order to guide the dust-containing air passing through the first air duct 22 to the air vent 24. ing.

  The second air duct 23 is connected to the first air duct 22 on the downstream side of the vent 24. For example, the downstream end portion 23 a of the second air passage tube 23 is connected to the downstream end portion of the first air passage tube 22 in a state of entering the downstream end portion of the first air passage tube 22. The downstream end 23 a of the second air duct 23 forms the outlet of the upstream air duct member 21. The upstream end 23 b of the second air duct 23 is substantially parallel to the first air duct 22 and is located downstream of the vent hole 24. A filter 26 is attached to the opening of the upstream end 23b.

  The upstream fan accommodating portion 28 is formed of a cylindrical case shorter than the accommodating case 16, and one end thereof is opened as an air outlet 29, and the other end has a closed end wall 28a. The upstream fan accommodating portion 28 is fitted inside the accommodating case 16 and is connected to the lower portion of the accommodating case 16 by a connecting means (not shown). The closed end wall 28 a partitions the inside of the upstream fan housing portion 28 from the upper space of the housing case 16.

  Each air inlet 17 faces the partitioned upper space. These air inlets 17 are opened in a direction orthogonal to the direction in which the central axis of the downstream air passage member 12 extends. On the other hand, the air outlet 29 of the upstream fan housing portion 28 is opened downward in the direction in which the central axis extends. That is, the air outlet 29 and the air inlet 17 are opened in different directions.

  The upstream fan accommodating portion 28 is connected to the upstream air path member 21. For this connection, for example, a plurality of connecting rods 30 (see FIG. 1) are provided across the air outlet 29 across the outlet portion of the upstream air passage member 21 and the upstream fan housing portion 28. By this connection, the downstream end 23 a of the second air duct 23 that forms the outlet of the upstream air duct member 21 is disposed at the center of the air outlet 29. For this reason, the air outlet 29 is provided around the downstream end 23 a of the second air duct 23. In addition, the first air passage tube 22 and the downstream air passage member 12 of the upstream air passage member 21 connected as described above are arranged so that their center axes are straight and continuous.

  As shown in FIG. 1, the suction port body 31 is suitable for floor cleaning, and includes a suction port body 32 and a connection pipe 33. The suction port main body 32 has a suction opening 32a on its lower surface. The connecting pipe 33 is attached to the central portion of the rear portion of the suction port body 32 so as to be rotatable in the vertical direction and the horizontal direction.

  The connection pipe 33 is detachably fitted to and connected to the tip end part (upstream end part) 22a of the first air path pipe 22 included in the upstream side air path member 21. In FIG. 1, reference numeral 34 denotes a lock button that prevents the connection pipe 33 connected to the upstream side air passage member 21 from coming off. Since the release prevention is released by pressing the lock button 34, it is possible to separate the upstream air passage member 21 and the suction port body 31 having the connection pipe 33 in this released state.

  The drive fan 41 is accommodated in the downstream fan accommodating portion 15. The suction fan 43 is accommodated in the upstream fan accommodating portion 28.

  A drive shaft 45 that supports these fans is disposed in the downstream fan housing portion 15. The drive shaft 45 is rotatably supported by the first bearing 46 and the second bearing 47. That is, one end of the drive shaft 45 is supported by the first bearing 46. The drive shaft 45 passes through the second bearing 47 and is supported by the second bearing 47.

  The first bearing 46 is supported by a plurality of bearing support bars 48, and is disposed at the inner central portion of the connection cylinder portion 18. The second bearing 47 is attached to the central portion of the closed end wall 28 a of the upstream fan accommodating portion 28.

  The drive fan 41 is located between the first bearing 46 and the second bearing 47 and is fixed to the drive shaft 45. The drive fan 41 is rotated by the airflow flowing through the downstream fan housing portion 15.

  The suction fan 43 is fixed to an end portion side portion of the drive shaft 45 that passes through the second bearing 47 and protrudes into the upstream fan housing portion 28. The suction fan 43 is rotated by the rotation of the drive fan 41. For example, a sirocco fan is used as the suction fan 43, and its suction port approaches and opposes the opening of the downstream end 23 a of the second air duct 23 that forms the outlet of the upstream air duct member 12. .

  The dust separation unit 51 separates dust, moisture, and the like sucked from the suction port body 31 from the air, and is disposed on the upstream side of the suction fan 43. As a preferred example, the dust separation unit 51 is composed of a dust cup that centrifuges dust and moisture from air.

  The dust cup (dust separation portion 51) includes a bottomed cylindrical cup body 51a formed integrally with a synthetic resin, and a cup lid 51b removably attached to the upper end opening of the body. An inlet 52 is opened in the upper peripheral wall of the cup main body 51a, and an air guide 53 is provided opposite thereto from the inside of the cup main body 51a. The fitting cylinder part 54 is formed in the cup lid 51b.

  The dust separator 51 is detachably supported on the outside of the first air duct 22 of the upstream air duct member 21. In order to enable this support, a support member 55 is fixed to the outer periphery of the first air duct 22. The support member 55 includes a receiving cylindrical portion 55 a that can accommodate the lower portion of the dust separation portion 51. The receiving cylindrical portion 55a has a bottom and an upper end is open. A circular receiving member 56 and a spring 57 that biases the circular receiving member 56 upward are provided inside the receiving cylindrical portion 55a.

  The dust separator 51 is supported on the outside of the first air duct 22 in the following procedure. First, the bottom of the cup body 51 a is applied obliquely to the receiving member 56, and the dust separating portion 51 is operated to be parallel to the first air duct 22 while pushing the receiving member 56 against the spring 57. Thus, the entire dust separation unit 51 is disposed below the upstream end 23 b of the second air duct 23. Next, in this state, after the fitting cylinder portion 54 of the cup lid 51b is aligned with the upstream end portion 23b, the force pressing the dust separation portion 51 is released, and the force of the spring 57 is used. The dust separation part 51 is pushed up. As a result, the fitting hole 54 is fitted to the outer periphery of the upstream end portion 23 b of the second air passage tube 23, and the dust separation portion 51 is sandwiched between the second air passage tube 23 and the support member 55. Supported by the state. In such a support state, the lower end portion of the cup body 51a is held so as not to enter the receiving cylindrical portion 55b.

  Thus, in a state in which the dust separation part 51 is supported on the outside of the first air channel tube 22, the inlet 52 of the cup body 51a is opposed to the vent hole 24 of the first air channel tube 22 and thus faces the cup body 51a. The inside communicates with the inside of the first air duct 22. In FIG. 2, reference numeral 58 denotes an elastically deformable seal member attached to the outer surface of the first air duct tube 22 so as to surround the vent 24, or an elastic member attached to the outer surface of the cup body 51a so as to surround the inlet 52. A deformable sealing material is shown. The sealing material 58 prevents outside air from being sucked from between the inlet 52 and the vent 24.

  In addition, what is necessary is just to perform in the reverse procedure to the said support procedure, in order to remove the dust separation part 51 supported by the upstream air path member 21. FIG. Further, the attachment 11 having the above-described configuration does not include electrical parts such as an electric motor and circuit parts, and current-carrying parts such as wiring for supplying power, so that power is not supplied to the attachment 11.

  Next, the case where cleaning is performed with the attachment 11 connected to the tip of the suction hose 5 as shown in FIG. 1 will be described.

  The electric blower 3 in the cleaner body 2 is driven in the operation mode designated by the operation on the operation panel 5e. Along with this, the suction force of the electric blower 3 spreads to the downstream air passage member 12 of the attachment 11 through the suction hose 5. Thus, outside air is sucked from the air inlet 17 of the housing case 16, and the sucked air flows through the driving fan 41 toward the suction hose 5 in the downstream air passage member 12. Thus, the driving fan 41 is rotated by the airflow (first airflow) sucked from the air inlet 17 into the main body inlet 2b. That is, the drive fan 41 is rotated by the flow energy of the air sucked from the middle portion in the longitudinal direction of the attachment 11 without passing through the suction port body 31.

  With the rotation of the drive fan 41, the suction fan 43 fixed to the drive shaft 45 is simultaneously rotated. The rotated suction fan 43 sucks air from the opening at its lower end and discharges it from the peripheral portion to the outside. The air thus exhausted is guided by the upstream fan housing portion 28 and discharged outside through an air outlet 29 formed at the lower end of the upstream fan housing portion 28.

  Therefore, the suction fan 43 sucks the air in the second air passage tube 23 of the upstream air passage member 21, and the suction force thereof passes through the dust separation portion 51 and the first air passage tube 22 communicated therewith. It spreads to the suction opening 32 a of the suction port body 31. Thereby, dust on the surface to be cleaned is sucked together with air from the suction opening 32a.

  The sucked dust-containing air flows through the first air passage tube 22 of the upstream air passage member 21, and is sucked into the dust separation portion 51 through the vent hole 24 and the inlet 52 of the cup body 51a. At this time, the dust-containing air is guided by the air guide 53, and the direction of the wind is changed so as to turn along the inner peripheral surface of the cup body 51a.

  As the dust-containing air is swirled in the dust separation portion 51, dust having a large mass in the dust-containing air is centrifuged from the air and stored in the cup body 51a. On the other hand, the air separated from the dust and the like is inverted and raised at the central portion in the cup body 51 a and is sucked into the second air duct 23 through the filter 26. In this case, fine dust contained in the air sucked into the second air duct 23 is captured by the filter 26. Then, the air passing through the second air duct 23 is sucked into the suction fan 43 and discharged from the air outlet 29 as described above.

  Thus, the air flow (second air flow) generated with the rotation of the suction fan 43 is sucked through the suction port body 31 and discharged from the air outlet 29 through the upstream air passage member 21 and the dust separation unit 51. Is done. The second air stream is partitioned by the upstream fan housing portion 28 with respect to the first air stream sucked into the cleaner body 2 from the air inlet 17 and is independent of the first air stream.

  As described above, the air passage of the attachment 11 used in communication with the main body suction port 2b of the cleaner body 2 includes the driving air passage through which the first air flow for rotating the driving fan 41 circulates, and the driving fan 41. Is separated from the dust-absorbing air passage through which the second airflow formed by the suction fan 43 rotated at the boundary of the closed end wall 28a of the upstream fan housing portion 28. That is, the dust suction air path is independent of the drive air path.

  For this reason, even if moisture such as a milk, juice or liquid containing a lot of liquid spilled on the surface to be cleaned may be sucked during the cleaning described above, moisture sucked into the dust suction air passage, etc. Does not circulate through an independent drive air passage with respect to the dust suction air passage. Thereby, the water | moisture content etc. which were suck | inhaled by the dust suction air path are prevented from being suck | inhaled in the cleaner body 2 through a drive air path.

  In this case, the air sucked into the suction fan 43 from the dust separator 51 contains moisture. However, the moisture-containing air is released into the atmosphere through the air outlet 29 in the same manner as in the cleaning described above. In addition, this discharge direction is different from the direction in which outside air is sucked into the air inlet 17 (the direction toward the center of the upstream fan housing portion 28). Specifically, the moisture-containing air is discharged through the air outlet 29 in a direction away from the air inlet 17, for example, in a downward direction. For this reason, since it is suppressed that the air which was tinged with moisture and was discharged | emitted from the air outlet 29 is sucked into the air inlet 17, such moisture may be sucked into the cleaner body 2 through the driving air passage. Absent.

  Therefore, by using the attachment 11 having the above-described configuration, it is possible to clean by sucking moisture or the like. As a result, the dust collected in the dust collection filter 4 in the cleaner body 2 and the dust collection filter 4 get wet and cause bad odor due to the cleaning using the standard extension tube and suction port (not shown). You can avoid it.

  Even when moisture or the like is sucked in as described above, the moisture or the like is not sucked into the cleaner body 2, so that it is possible to prevent the electric blower 3 or the like from being broken due to the sucked moisture or the like. Thereby, since it is not necessary to use the electric blower 3 of a specification with high water resistance, it is possible to reduce the cost of the vacuum cleaner 1. At the same time, since the sucked moisture and the like are separated from the sucked air outside the cleaner body 2, the cleaner body 2 is compared with the vacuum cleaner in which the steam / water separator is disposed on the cleaner body side. Can be formed compactly. Accordingly, it is easy to move the main body of the vacuum cleaner during cleaning or the like, and usability can be improved.

  In addition, the dust separating unit 51 in which moisture or the like accumulates is supported not by the cleaner body 2 but by the upstream air passage member 21 outside the cleaner body 2. For this reason, even if the cleaner main body 2 may be tilted during cleaning, moisture or the like in the dust separator 51 is not sucked and reaches the electric blower 3. Similarly, even when the moisture or the like in the dust separating unit 51 is sucked out of the cup body 51 a due to the inclination or movement of the attachment 11 during cleaning, the moisture or the like passes downward through the air outlet 29. Therefore, the electric blower 3 is not reached.

  As described above, the moisture and the like sucked from the suction port body 31 is separated from the cup main body 51a of the dust separating unit 51 by the above-described centrifugal separation in the dust separating unit 51 disposed in the middle of the dust suction air passage. Accumulated inside. For this reason, the dust separation unit 51 does not have a problem when a filtering member such as a filter or a paper pack is used. That is, there is no possibility that the filtration member is clogged with dust contained in moisture or the like and the filtration performance is deteriorated. At the same time, the filter member does not get wet and does not generate a bad odor, and the replacement frequency of the filter member does not increase.

  Moreover, the water or the like stored in the cup body 51a can be discarded by opening the cup lid 51b in a state where the dust separation part 51 is removed from the upstream side air passage member 21 by the procedure described above. Furthermore, since the cup body 51a is made of synthetic resin and has water resistance, there is no problem even if water is stored in the cup body 51a, and the cup body 51a is stored inside by washing with water. Dust and moisture can be easily removed. Therefore, it is easy to dispose of moisture and the like, the usability is good, and the dust separation unit 51 can be used repeatedly.

  Moreover, since the dust separation part 51 is arrange | positioned outside the cleaner main body 2 as stated above, it is also possible to make a cleaner main body compact without being restricted by the dust separation part 51.

  Further, as moisture or the like is sucked, a part of the attachment 11 through which the moisture or the like passes, that is, the suction port body 31 and the first air path pipe 22 of the upstream side air path member 21 are soiled. However, the driving air passage separated from the dust suction air passage and the inner surface of the suction hose 5 are not soiled by the sucked moisture or the like. Since the range to be stained is limited in this way, when cleaning is performed to remove dirt on the inner surface of the attachment 11, there are few objects to be cleaned, so that the labor of cleaning can be reduced. Moreover, since the attachment 11 does not include an electric component to be fed, the air passage can be washed with water.

  FIG. 3 shows a second embodiment. The second embodiment is different from the first embodiment in the configuration described below, and the other configurations are the same as those in the first embodiment. For this reason, about the structure which show | plays the same or same function as 1st Embodiment, the code | symbol same as 1st Embodiment is attached | subjected and the description is abbreviate | omitted.

  In the second embodiment, the housing case 16 of the downstream fan housing portion 15 further includes an upward cylindrical portion 16b. The upward cylindrical portion 16b is provided so as to be bent upward from the wall portion 16a, and preferably has the same diameter as the cylindrical wall of the housing case 16, and is integrated with the cylindrical wall and is flush with the cylindrical wall. In the second embodiment, instead of providing the plurality of air inlets 17 on the cylindrical wall of the housing case 16, the wall 16a is provided at regular intervals along the circumferential direction thereof. The closed end wall 28a of the upstream fan accommodating portion 28 faces these air inlets 17 from below. Accordingly, each air inlet 17 is opened upward, while the air outlet 29 of the upstream fan housing portion 28 is opened downward.

  The attachment 11 for vacuum cleaners and the vacuum cleaner of 2nd Embodiment are the same as 1st Embodiment including the structure which is not illustrated except the structure demonstrated above. Therefore, also in this 2nd Embodiment, while the said subject is solved, it is possible to clean while reliably preventing moisture and the like from being sucked into the electric blower, and it is possible to improve usability. An attachment 11 and a vacuum cleaner can be provided.

  In addition, the first airflow sucked into the electric blower 3 by rotating the drive fan 41 is sucked into the downstream fan housing 15 from above the air inlet 17, whereas the suction fan 43 causes dust to be sucked. The second air flow discharged from the air is discharged downward through the air outlet 29. For this reason, even if the air discharged from the suction fan 43 is damp, it can be more reliably prevented from being sucked into the drive fan 41 from the air inlet 17.

  FIG. 4 shows a third embodiment. The third embodiment is different from the first embodiment in the configuration described below, and the other configurations are the same as those in the first embodiment. For this reason, about the structure which show | plays the same or same function as 1st Embodiment, the code | symbol same as 1st Embodiment is attached | subjected and the description is abbreviate | omitted.

  In the third embodiment, a downstream fan accommodating portion 15 is formed at the lower end portion of the downstream air path member 12. The lower end of the downstream fan accommodating portion 15 forms a single air inlet 17 and is opened downward. An upstream fan accommodating portion 28 is formed at the upper end portion of the upstream air passage member 21. The upper end of the upstream fan accommodating portion 28 is opened upward with a single air outlet 29.

  The downstream fan accommodating portion 15 and the upstream fan accommodating portion 28 are aligned and connected at the same height position. At the same time, a drive shaft 45 extending in a direction orthogonal to the central axis of the downstream side air passage member 12 and the upstream side air passage member 21 is attached across the downstream fan housing portion 15 and the upstream fan housing portion 28. A bearing that supports the drive shaft 45 is not shown.

  The drive fan 41 accommodated in the downstream fan accommodating portion 15 and the suction fan 43 accommodated in the upstream fan accommodating portion 28 are fixed to the drive shaft 45, respectively. The drive fan 41 is rotated by the first airflow sucked upward through the air inlet 17 of the downstream fan housing portion 15 by the suction force of the electric blower that is spread to the downstream side air passage member 12. The suction fan 43 is rotated by the rotation of the drive fan 41. A dust separation unit 51 is provided on the upstream side of the suction fan 43, and the suction force generated by the rotation of the suction fan 43 via the dust separation unit 51 is applied to the tip of the upstream fan housing unit 28. It spreads to the connected suction port not shown.

  The attachment for vacuum cleaner and the vacuum cleaner of 3rd Embodiment are the same as 1st Embodiment including the structure which is not illustrated except the structure demonstrated above. Therefore, also in this 3rd Embodiment, the said subject is solved, and it can clean while preventing reliably that a water | moisture content etc. are attracted | sucked by an electric blower, and can improve usability. An attachment 11 and a vacuum cleaner can be provided.

  In addition, the downstream side airway member 12 and the upstream side airway member 21 are connected not in the coaxial arrangement but in a shifted state. For this reason, even though the intake direction to the downstream fan accommodating portion 15 and the exhaust direction from the upstream fan accommodating portion 28 are both upward, the air discharged from the suction fan 43 is humid. It is possible to more reliably prevent the air from being sucked into the driving fan 41 from the air inlet 17.

  5 and 6 show a fourth embodiment. The fourth embodiment is different from the second embodiment in the configuration described below, and the other configurations are the same as those in the second embodiment. For this reason, about the structure which show | plays the same or same function as 2nd Embodiment, the code | symbol same as 2nd Embodiment is attached | subjected and the description is abbreviate | omitted.

  In the fourth embodiment, the upstream air passage member 21 is detachably connected to the downstream air passage member 12.

  Therefore, the front end opening of the housing case 16 of the downstream fan housing portion 15 provided in the downstream air passage member 12 is closed by the case end wall 16c. The peripheral portion of the case end wall 16c faces the air inlet 17 from below. A second bearing 47 is attached to the center of the case end wall 16c.

  The drive shaft 45 to which the drive fan 41 is fixed is rotatably supported across the first bearing 46 and the second bearing 47. The drive shaft 45 passes through the second bearing 47 and protrudes out of the downstream fan housing portion 15, and a drive-side shaft coupling 61 is connected to the protruding end. The drive side shaft coupling 61 has a claw 61a and a claw engaging groove 61b as shown in FIG. A plurality of the claw 61a and the claw engaging groove 61b are provided, but only one is shown in FIG.

  Furthermore, the 1st coupling | bond part 62 is provided in the surrounding part of the case end wall 16c. The first coupling portion 62 is composed of a plurality of engaging claws or magnets.

  The upper end of the upstream fan accommodating portion 28 provided in the upstream air passage member 21 is closed by a closed end wall 28a. The peripheral portion of the closed end wall 28a faces the air outlet 29 from above. A third bearing 64 is attached to the central portion of the closed end wall 28a. A rotation shaft 65 is supported by the third bearing 64 passing through the third bearing 64 in the upward direction. A suction fan 43 accommodated in the upstream fan accommodating portion 28 is fixed to the lower portion of the rotating shaft 65.

  A driven side shaft coupling 66 is connected to the upper portion of the rotating shaft 65 so as to protrude outside the upstream fan housing portion 28. The driven side shaft coupling 66 has a claw 66a and a claw engagement groove 66b as shown in FIG. A plurality of the claw 66a and the claw engagement groove 66b are provided, but only one is shown in FIG.

  The claw 66a can be engaged with and disengaged from the claw engagement groove 61b of the drive side shaft coupling 61. Similarly, the claw 61a can be engaged and disengaged from the claw engagement groove 66b of the driven side shaft coupling 66. The claws 61a and 66a are both tapered so that the engagement and disengagement are smooth.

  Furthermore, the 2nd coupling | bond part 67 is provided in the surrounding part of the accommodating part end wall 28b. The second coupling portion 67 is composed of a plurality of engaging claws or magnets as in the first coupling portion 62. The 1st coupling | bond part 62 and the 2nd coupling | bond part 67 are couple | bonded so that attachment or detachment is possible, and the upstream air path member 21 and the downstream air path member 12 are connected so that it may not leave | separate up and down by the coupling. In this connected state, the drive side shaft coupling 61 and the driven side shaft coupling 66 are connected, and the rotation of the drive shaft 45 can be transmitted to the rotation shaft 65.

  The attachment for vacuum cleaner and the vacuum cleaner of 4th Embodiment are the same as 2nd Embodiment including the structure which is not shown in figure except having demonstrated above. Therefore, also in this 4th Embodiment, the said subject is solved, and it can clean while preventing reliably that a water | moisture content etc. are attracted | sucked by an electric blower, and can improve usability. An attachment 11 and a vacuum cleaner can be provided.

  Moreover, in the fourth embodiment, since the upstream side airway member 21 is detachably connected to the downstream side airway member 12, the upstream side airway member 21 that is contaminated with moisture or the like when the moisture or the like is sucked in. Can be separated from the downstream air passage member 12. For this reason, after making the upstream side airway member 21 and the suction inlet body into a single state, they can be washed with water. Therefore, it is possible to further improve the usability when the dirt attached to the inner surfaces of the upstream air passage member 21 and the suction port body is easily removed.

  FIG. 7 shows a fifth embodiment. The fifth embodiment is different from the first embodiment in the configuration described below, and the other configurations are the same as those in the first embodiment. For this reason, about the structure which show | plays the same or same function as 1st Embodiment, the code | symbol same as 1st Embodiment is attached | subjected and the description is abbreviate | omitted.

  In the vacuum cleaner 1 of 5th Embodiment, the attachment 11 is used as a standard equipment.

  In the vacuum cleaner 1 of the fifth embodiment, the cleaner body 2 has a steam outlet 71. The steam outlet 71 is provided, for example, on the front surface of the vacuum cleaner main body 2 along with the main body suction port 2b. A steam generator 72 is accommodated in the cleaner body 2. The steam generation device 72 generates steam and supplies the generated steam to the steam outlet 71. The steam generator 72 generates steam by, for example, heating heated tank water with an electric heater (not shown), or generates steam by dropping water into a container heated to 100 ° C. or higher. The water supply to the steam generating device 72 is performed by opening the main body lid 2a.

  In the vacuum cleaner 1 of 5th Embodiment, the nozzle 73 for steam distribution is mounted in the suction inlet 31. FIG. The nozzle 73 is disposed, for example, in the center of the suction port body 31 in the width direction, and sprays steam onto a surface to be cleaned such as a wooden floor or a tile floor in front of the suction port body 31. Instead of spraying steam directly onto the surface to be cleaned by the nozzle 73, a wiping member made of sponge, felt or the like is attached to the lower surface portion of the suction port 31, and steam is sprayed onto the wiping member from the nozzle 73. It may be.

  The nozzle 73 communicates with the steam outlet 71 through a steam conduit 74. The steam conduit 74 is formed of, for example, a flexible heat-resistant tube or the like, and is piped along the suction hose 5 and the attachment 11, and is detached from the suction hose 5 and the attachment 11 by a holder (not shown). Not to be held. The steam conduit 74 is detachable.

  The vacuum cleaner 1 of 5th Embodiment is the same as the vacuum cleaner of 1st Embodiment including the structure which is not illustrated except the structure demonstrated above. Therefore, also in the fifth embodiment, the above-mentioned problem is solved, and it is possible to clean while reliably preventing moisture and the like from being sucked into the electric blower 3, and it is possible to improve the usability. It is possible to provide a simple vacuum cleaner 1.

  Moreover, the electric vacuum cleaner 1 of the fifth embodiment can perform cleaning while generating steam with the steam generating device 72 in a state where the nozzle 73 and the steam outlet 71 are in communication with each other through the steam conduit 74. This makes it possible to easily separate oil stains, dust, and the like that are firmly attached to the surface to be cleaned from the surface to be cleaned by spraying steam, and to suck and clean them.

  In this case, the suction port body 31 sucks a part of the steam (moisture) sprayed on the surface to be cleaned. It is difficult to centrifuge steam from air. However, the air containing steam passes through the dust separation part 51 and is then discharged to the outside of the attachment 11 through the air outlet 29 of the upstream fan housing part 28 together with the air. Thereby, since steam is not sucked into the air inlet 17 of the downstream fan housing portion 15, the steam sucked into the suction port body 31 through the downstream air passage member 12 and the suction hose 5 and into the cleaner body 2. Will not be inhaled.

  Therefore, by using the attachment 11 described above, it is possible to clean the steam while spraying it on the surface to be cleaned, while preventing the electrical adverse effect of the steam on the electric blower 3 and the like.

  FIG. 8 shows a sixth embodiment. The sixth embodiment is different from the first embodiment in the configuration described below, and the other configurations are the same as those in the first embodiment. For this reason, about the structure which show | plays the same or same function as 1st Embodiment, the code | symbol same as 1st Embodiment is attached | subjected and the description is abbreviate | omitted.

  In the sixth embodiment, a mist spraying device 81 is mounted on the suction port body 31 of the attachment 11. The mist spraying device 81 includes a mist spraying nozzle 82, an air motor 83, a water tank 84, and the like.

  The mist spray nozzle 82 is attached to the central portion of the suction port body 31 in the width direction. The air motor 83 is built in one end of the suction port body 31 in the width direction. The air motor 83 is rotated by a part of the air sucked into the upstream side air passage member 21 through the suction port body 31. The high-pressure air generated by the air motor 83 is guided to the mist spray nozzle 82 by the air conduit 85 and is sprayed from the tip of the mist spray nozzle 82 onto the surface to be cleaned such as the floor.

  The water tank 84 is attached to the other end of the suction port body 31 in the width direction. The water tank 84 can be attached to and detached from the suction port body 31 from above to facilitate replenishment of water thereto. The tip of the water pipe 86 communicated with the inner bottom portion of the water tank 84 is opened facing the air path that circulates in the mist spray nozzle 82.

  For this reason, as high-pressure air circulates in the mist spray nozzle 82 by the air motor 83, the water in the water tank 84 is sucked out as a mist and jetted obliquely downward from the mist spray nozzle 82 by the principle of spraying. The

  The vacuum cleaner 1 of 6th Embodiment is the same as the vacuum cleaner of 1st Embodiment including the structure which is not illustrated except the structure demonstrated above. Therefore, also in the sixth embodiment, the above-mentioned problem is solved, and it is possible to clean while reliably preventing moisture and the like from being sucked into the electric blower 3, and it is possible to improve the usability. It is possible to provide a simple vacuum cleaner 1.

  And since the vacuum cleaner 1 of 6th Embodiment is equipped with the mist spreading | diffusion apparatus 81 mounted in the suction inlet 31, the mist produced | generated by this apparatus is spread | dispersed on a to-be-cleaned surface, and thereby a to-be-cleaned surface Can be moistened. Thereby, it is possible to perform cleaning while suppressing the rising of dust on the surface to be cleaned. At the same time, when a wiping member in contact with the surface to be cleaned is attached to the lower surface of the suction port body 31, the surface to be cleaned can be cleaned while wiping with water by being wet with the sprayed mist.

  During such cleaning, the suction port body 31 sucks a part of mist (water) sprayed on the surface to be cleaned. The air containing the mist passes through the dust separation part 51 and then is discharged to the outside of the attachment 11 through the air outlet 29 of the upstream fan housing part 28 together with the air. Accordingly, since mist is not sucked into the air inlet 17 of the downstream fan housing portion 15, the mist sucked into the suction port body 31 in the cleaner body 2 through the downstream air passage member 12 and the suction hose 5. Will not be inhaled.

  Therefore, by using the attachment 11 described above, it is possible to perform cleaning while spraying the mist on the surface to be cleaned while preventing an adverse electrical influence on the electric blower 3 and the like by the mist.

  Although several embodiments have been described above, these embodiments are presented as examples, and are not intended to limit the scope of the invention. The novel embodiment of the present invention can be implemented in various other forms, and various omissions, substitutions, changes, and the like can be made without departing from the invention. These embodiments and modifications thereof are included in the scope of the invention, and are included in the invention described in the claims and the equivalents thereof.

  The attachment may be a standard equipment in a vacuum cleaner. Furthermore, the vacuum cleaner according to the embodiment in which the attachment is directly connected to the main body suction port of the main body of the vacuum cleaner without going through the suction hose.

  Further, the drive fan and the suction fan included in the attachment are not limited to a single one, and these fans can be provided in multiple stages. In this case, improvement in suction performance can be expected, and there is an advantage that the diameter of the downstream fan housing portion and the upstream fan housing portion can be reduced as the small diameter driving fan and suction fan can be used.

  Further, the attachment may have a configuration without a suction port. In this case, the suction port body is a part that is provided as a standard in a vacuum cleaner, and the upstream side of the first air path tube 22 of the upstream side air path member 21 provided in the attachment 11 is connected to the connection pipe of the suction port body. The side end 22a is detachably connected.

  DESCRIPTION OF SYMBOLS 1 ... Electric vacuum cleaner, 2 ... Vacuum cleaner main body, 2b ... Main body inlet, 3 ... Electric blower, 11 ... Attachment, 12 ... Downstream air path member, 15 ... Downstream fan accommodating part, 17 ... Air inlet, 21 ... Upstream air passage member, 28 ... upstream fan housing, 29 ... air outlet, 31 ... suction port, 41 ... drive fan, 43 ... suction fan, 51 ... dust separation part (dust cup), 71 ... steam outlet, 72 ... Steam generating device, 73 ... Nozzle, 74 ... Steam conduit, 81 ... Mist spraying device

Claims (7)

An attachment used in communication with the main body suction port of the vacuum cleaner body in which the electric blower is housed,
A downstream air passage member having a downstream fan housing portion communicated with the main body suction port, the housing portion having an air inlet;
An upstream air passage member provided with an upstream fan accommodating portion in which an air outlet is formed, continuous to the upstream side of the downstream air passage member;
A driving fan accommodated in the downstream fan accommodating portion and rotated by a first airflow sucked into the main body inlet from the air inlet;
Suction that is accommodated in the upstream fan accommodating portion, is rotated by the driving fan, and generates a second airflow that is exhausted from the air outlet through the upstream airway member independently of the first airflow. With fans,
A dust separating unit that is arranged upstream of the suction fan and separates and collects dust and moisture from the sucked air;
The attachment for vacuum cleaners characterized by comprising.   The vacuum cleaner attachment according to claim 1, wherein the dust separation unit is a dust cup that is detachably attached to the outside of the upstream air path member and centrifuges dust and moisture from air.   The air inlet and the air outlet are opened in different directions, and the downstream fan housing portion is formed to guide the second air flow discharged from the air outlet in a direction away from the air inlet. The vacuum cleaner attachment according to claim 1, wherein the vacuum cleaner attachment is provided.   The vacuum cleaner attachment according to any one of claims 1 to 3, wherein the upstream air passage member is detachable from the downstream air passage member.   5. A suction port body connected to the upstream side air passage member is further provided, and a mist spraying device is mounted on the suction port body. 5. Attachment for vacuum cleaners. A vacuum cleaner main body having a main body suction port;
An electric blower housed in the vacuum cleaner body;
The vacuum cleaner attachment according to any one of claims 1 to 5, wherein the vacuum cleaner attachment is used in communication with the main body suction port.
The vacuum cleaner characterized by comprising. A vacuum cleaner body having a main body inlet and a steam outlet;
An electric blower housed in the vacuum cleaner body;
A steam generating device housed in the vacuum cleaner body and supplying steam to the steam outlet;
It is an attachment for vacuum cleaners as described in any one of Claim 1 to 4 used by communicating with the said main body suction inlet, Comprising: The suction inlet body to which the upstream air path member of this attachment was connected. The attachment comprising:
A nozzle for spraying steam mounted on the suction port;
A steam conduit communicating with the nozzle and the steam outlet;
The vacuum cleaner characterized by comprising.

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