JP4976831B2 - Electric vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of preventing dust from damaging a net filter even if the comparatively large dust such as a glass piece, a pebble, or sand is included in the air which flows into a dust collection chamber. <P>SOLUTION: The vacuum cleaner includes: a flow-in port (a flow-in cylinder part 45a) for allowing the air with the dust included therein to flow into one end of the dust collection chamber 34 in a dust collection container body: a guide blow passage for setting the flow-in direction of the air which flows into the dust collection chamber 34 from the flow-in port 45a; an air discharge port which is arranged at the other end of the dust collection chamber 34 and communicates with the suction opening of an electric blower; and the net filter 38c arranged in the air discharge port. An air stream outlet 47 to the dust collection chamber 34 in the guide blow passage is arranged close to the net filter 38c and is directed, so as to allow the air blown out from the air stream outlet 47 to flow in a direction along the net filter 38c. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a vacuum cleaner including a dust collecting container in which a thin plate-like filter is provided at an air outlet of a dust collecting chamber.

  In a conventional vacuum cleaner, a dust collecting container is detachably attached to the vacuum cleaner main body, and the suction negative pressure of the electric blower provided in the vacuum cleaner main body is sucked through the dust collecting chamber of the dust collecting container. There is a vacuum cleaner that works on the mouth.

The dust collection container has an air inlet at the top of the dust collection chamber, an exhaust port at the bottom of the dust collection chamber, and a net filter at the exhaust port to reduce the suction negative pressure of the electric blower to the net. It acts on the dust collecting chamber through a filter (see, for example, Patent Document 1).
JP2005-31665A

  However, if the air flowing into the dust collection chamber contains relatively large dust such as glass pieces, pebbles, or sand, the net filter may be damaged by colliding so that the dust penetrates the net filter. There is a risk of doing.

  Therefore, the present invention provides a vacuum cleaner that does not damage the net filter even if the air flowing into the dust collection chamber contains relatively large dust such as glass pieces, pebbles, or sand. It is intended to do.

In order to achieve this object, the present invention comprises a cleaner body provided with an electric blower, and a dust collecting container provided on the upstream side of the electric blower , wherein the dust collecting container is an air containing dust. An inflow port, a dust collection chamber for storing dust flowing in from the inflow port, an air discharge port provided on a bottom surface of the dust collection chamber and communicating with a suction opening of the electric blower, and an air discharge port A thin plate-like filter provided, and an airflow guide portion that has a guide air passage and guides air containing dust flowing in from the inlet toward the thin plate-like filter from one end portion into the dust collection chamber. The air flow guide portion is provided with the other end in contact with or close to the thin plate-like filter, and the air blown off at the downstream end thereof flows in a direction along the thin plate-like filter. The air outlet is opened. And wherein the thing as the vacuum cleaner to be.
In addition, the present invention includes a cleaner body provided with an electric blower and a dust collecting container provided on the upstream side of the electric blower, and the dust collecting container has an inlet through which air containing dust flows. A dust collection chamber for storing dust flowing in from the inlet, an air discharge port provided on a bottom surface of the dust collection chamber and communicating with a suction opening of the electric blower, and a thin plate shape provided at the air discharge port And an airflow guide portion that has a guide air passage and guides air containing dust flowing in from the inlet from one end portion into the dust collection chamber, and the other end portion of the airflow guide portion is the It is provided in contact with or close to the thin plate-like filter, and an air flow outlet is opened at the downstream end so that the blown air flows in a direction along the thin plate-like filter, which is substantially the same as the thin plate-like filter. Inflow pipe section extending in the vertical direction And an airflow outlet pipe portion that is bent in a direction along the thin plate-like filter from the inflow pipe portion and opens the airflow outlet, and an outer surface of the airflow outlet pipe portion is formed on the thin plate-like filter. A closed portion that is brought into contact with or in close proximity to prevent the flow of air to the gap between the outer surface of the inflow pipe portion and the inner peripheral surface of the dust collecting chamber adjacent to the outer surface of the inflow pipe portion and the outer surface of the inflow pipe portion. The vacuum cleaner is characterized by being provided between the inner peripheral surface of the dust chamber.

  According to this configuration, since the air blown from the airflow outlet into the dust collection chamber flows in a direction along the thin plate-like filter, relatively large dust such as glass pieces, pebbles, or sand flows into the air flowing into the dust collection chamber. Even if included, the blown-out dust does not have an inertial force that pierces the thin plate filter, and can prevent the dust from damaging the thin plate filter.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Constitution]
In FIG. 1, reference numeral 1 denotes a vacuum cleaner body of an upright type (vertical type) electric vacuum cleaner. The vacuum cleaner main body 1 has a main body case 2, and the main body case 2 has a front case 3 and a rear case 4. As shown in FIGS. 1 to 7A, a container housing recess 5 that opens to the front side and the side is formed in an intermediate portion in the vertical direction of the front case 3.

  Moreover, this container storage recessed part 5 has the upper wall 5a, the vertical wall 5b, and the bottom wall 5c, as shown in FIG. The vertical wall 5b includes a front upper vertical wall portion 5b1, a rear lower vertical wall 5b2, and a step wall 5b3 connecting the vertical walls 5b1 and 5b2. A semi-cylindrical bulging protrusion 5b4 extending in the front-rear direction is formed at the center in the left-right direction of the step wall 5b3. On the bulging protrusion 5b4, a semicircular pipe engaging groove 5b41 extending in the front-rear direction is formed as shown in FIG. 7B.

  Further, as shown in FIG. 7B, the front upper vertical wall 5b1 is formed with a pipe mounting hole 6 having a shape in which the lower half is aligned with the front end of the pipe engaging groove 5b41. Further, the bottom wall 5c is inclined upward from the front side toward the lower end of the rear lower vertical wall 5b2 as shown in FIGS. 4, 5, and 7A. A filter frame mounting hole 7 is formed in the bottom wall 5c as shown in FIGS. A filter frame 8 is fitted and fixed in the filter frame mounting hole 7, and a lattice portion 8a is formed at the upper end of the filter frame 8 as shown in FIG.

  A filter 9 formed by foaming the resin shown in FIG. 5 is detachably mounted on the lattice portion 8a of the filter frame 8 in FIG. Further, in the lower part of the main body case 2, as shown in FIG. 6, an electric blower 11 facing the lattice portion 8 a with the suction opening 10 facing upward is attached.

  Further, as shown in FIG. 6, a suction pipe 12 extending vertically is disposed in the main body case 2. The suction pipe 12 has a lower suction pipe portion 13 and an upper suction pipe portion 14. The lower suction pipe 13 is disposed in the pipe engaging groove 5b41 as shown in FIGS. 6, 7 (a) and 7 (b), and the front end thereof is located in the pipe mounting hole 6 as shown in FIG. 7 (b). As shown in FIG. 6, it has a longitudinal pipe portion 13b that is bent downward from the rear end of the longitudinal pipe portion 13a.

  The lower end portion of the vertical pipe portion 13 b is fixed to the lower end portion of the main body case 2 and is opened at the lower end of the main body case 2. As shown in FIG. 7B, a seal member 15 is interposed between the front end portion of the front and rear pipe portion 13a and the pipe mounting hole 6.

  Moreover, the lower end part of the upper suction pipe part 14 is connected to the front end part vicinity of the front-back pipe part 13a. In addition, as shown in FIG. 6, the upper end of the main body case 2 is formed with an upper end and a cylindrical portion 16 that opens into the main body case 2. A joint hole 17 is formed. An inward flange 16 a is formed at the lower end of the cylindrical portion 16.

Moreover, the upper end portion of the upper suction pipe portion 14 is loosely inserted into the cylindrical portion 16 and is fixed to the inner flange 16a. A cord reel 18 is attached to the upper suction pipe portion 14 and the main body case 2.
(Suction port)
Further, as shown in FIGS. 1 to 3 and 6, a suction port body 19 is disposed below the main body case 2. The suction port body 19 includes a suction port main body 20 and a connection pipe 21 that is attached to the rear edge of the suction port main body 20 so as to be able to be tilted back and forth. The connection pipe 21 is detachably fitted and connected to the lower end portion of the vertical pipe portion 13b.

  In addition, a suction chamber 22 is formed in the suction port body 20 as shown in FIG. 6, and a suction opening 22 a of the suction chamber 22 opens in the lower surface of the suction port body 20 as shown in FIG. 8. The suction chamber 22 is communicated with the connection pipe 21 via the suction air passage 23.

Further, as shown in FIGS. 6 and 8, a shutter 24 is integrally attached to the lower end portion of the connection pipe 21. The shutter 24 allows the suction air passage 23 and the connection pipe 21 to communicate with each other when the connection pipe 21 is inclined rearward, and interrupts the communication between the suction air passage 23 and the connection pipe 21 when the connection pipe 21 is erected. It is supposed to be.
(Hand-operated pipe)
Further, as shown in FIG. 6, one end of a dust collecting hose 25 is fitted to the upper suction pipe portion 14. A hand operating pipe 26 is connected and fixed to the other end portion of the dust collecting hose 25 as a hand operating portion, and an extendable pipe 27 is attached to the hand operating pipe 26. The extension pipe 27 has a large-diameter pipe 28 detachably connected to the hand operation pipe 26 and a small-diameter pipe 29 slidably fitted in the large-diameter pipe 28.

  A clearance nozzle 30 is attached to the tip of the small diameter pipe 29. The tip of the small diameter pipe 29 is detachably fitted in the pipe fitting hole 17. In this state, the suction port body 19 can be moved back and forth by grasping the handle 26 a of the hand operation pipe 26.

Further, the small diameter pipe 29 is extracted from the pipe fitting hole 17 integrally with the clearance nozzle 30, while the connection pipe 21 of the suction port body 19 is erected and the communication between the suction air passage 23 and the connection pipe 21 is blocked by the shutter 24. Thus, the clearance nozzle 30 can be used. Reference numeral 2a denotes a handle for carrying the main body provided at the upper end of the main body case 2.
(Dust collection container)
The dust container 31 shown in FIGS. 9 to 20 is detachably fitted in the container housing recess 5 as described above as shown in FIGS. The dust collection container 31 has a dust collection container main body 32 as shown in FIGS. As shown in FIGS. 9 and 10, the dust container main body 32 is formed in a substantially L-shaped side surface from the upper container part 32a and the lower container part 32b.

  As shown in FIG. 18, a pipe disposition space 33 is formed in the upper container portion 32a, and a dust collection chamber 34 opening downward is formed in the lower container portion 32b. Further, a mounting hole 35 is formed in the rear wall 32a1 of the upper container part 32a, and a semi-cylindrical bulging protrusion 36 that extends forward and backward and bulges downward is formed in the upper wall 32b1 of the lower container part 32b. An engaging groove 36a extending in the front-rear direction is formed above the bulging protrusion 36. When the dust collecting container 31 is fitted into the container housing recess 5 as shown in FIGS. 1 and 2, the engagement groove 36a is provided with a bulging protrusion 5b4 of the container housing recess 5 shown in FIGS. To be engaged.

Moreover, as shown in FIGS. 10 to 12, protrusions 37 and 37 are formed on the rear wall 32b2 of the lower container part 32b, and a position regulating flange extending forward and backward on the outer surface of the lower end part of the side wall 32b3 of the lower container part 32b. (Position restricting protrusions) 32b4 and 32b4 are formed.
<Filter>
Further, as shown in FIGS. 16 to 18, the dust collection container 31 is arranged below the main filter 38 and a main filter (bottom cover filter) 38 disposed below the dust collection container body 32. A fine dust filter 39 is provided.

  As shown in FIGS. 17 to 20, the main filter 38 includes a rectangular and tubular filter frame 38 a, a lattice portion 38 b provided at the end of the filter frame 38 a on the dust collection chamber 34 side, and a lattice portion. A net filter 38c as a thin plate filter attached to the front surface of 38b is provided. Moreover, as shown in FIGS. 19 and 20, protrusions 40 and 40 are formed on the rear wall 38a1 of the filter frame 38a.

  Further, the fine dust filter (pleat filter) 39 includes a filter frame 39a having the same shape as the filter frame 38a as shown in FIG. 16 and an end face contacting the lower end surface of the filter frame 38a as shown in FIG. A pleat filter portion 39b is provided so as to close the frame 39a. The pleated filter portion 39b is adapted to be fitted into the filter frame 38a when the upper end of the filter frame 39a contacts the lower end surface of the filter frame 38b. Moreover, as shown in FIGS. 10, 12, 13, 15, and 18, protrusions 41 are formed on the rear wall 39a1 of the filter frame 39a.

  Then, as shown in FIGS. 10, 12, and 20, the projection 40 of the main filter 38 is attached to the projection 37 of the lower container portion 32b so as to be rotatable by the hinge shaft 42 (by hinge coupling). The filter 38 is provided so that the lower end of the dust collecting chamber 34 can be opened and closed. Moreover, as shown in FIG. 17, in a state where the main filter 38 closes the lower end of the dust collecting chamber 34, the filter frames 38a of the main filter 38 are positioned restricting flanges 32b4 and 32b4 on both sides of the lower container portion 32b. The main filter 38 is prevented from shifting to the left and right by engaging with each other. In addition, in this state, the rectangular upper end surface of the filter frame 38a is in airtight contact with the rectangular lower end surface of the lower container portion 32b over the entire circumference.

  Further, as shown in FIGS. 10, 12 and 15, by attaching the projection 41 of the fine dust filter 39 to the projection 40 of the main filter 38 so as to be rotatable by the hinge shaft 43 (by hinge coupling), The fine dust filter 39 is provided to be openable and closable with respect to the lower portion of the main filter 38. In a state where the fine dust filter 39 closes the lower part of the main filter 38, the pleated filter portion 39b of the fine dust filter 39 is fitted into the filter frame 38a of the main filter 38, and the fine dust filter 39 The square upper end surface of the filter frame 39a is in airtight contact with the square lower end surface of the filter frame 38a over the entire circumference.

Further, the lower surface of the filter frame 39 a of the fine dust filter 39 comes into airtight contact with the filter frame 8 when the dust collecting container 31 is fitted into the container housing recess 5.
<Guide wind path>
Further, as shown in FIG. 18, a guide pipe 44 provided with a guide air passage 44a for air flow guidance is disposed in the dust collecting container main body 32 as an air flow guide portion. The guide pipe (airflow guide portion) 44 includes an inflow pipe portion 45 disposed across the pipe disposition space 33 and the dust collection chamber 34, and an airflow outlet pipe bent in a direction orthogonal to the inflow pipe portion 45. Part 46. Moreover, the airflow outlet pipe portion 46 is extended toward the center of the open end of the dust collection chamber 34 as shown in FIGS.

  Further, the inflow pipe portion 45 is provided with an inflow cylinder portion 45a that is airtightly and detachably fitted in the attachment hole 35 of the upper container portion 32a. This inflow cylinder part 45a is airtight to the sealing member 15 of the front and rear pipe part 13a in FIG. 7 when the dust collecting container 31 is fitted into the container housing recess 5 as shown in FIGS. It can be pressed. As shown in FIG. 18, when the dust collection chamber 34 is closed by the main filter 38, the inflow pipe portion 45 is provided substantially perpendicular to the net filter 38 c of the main filter 38.

  Further, as shown in FIGS. 22 to 24, the airflow outlet pipe portion 46 includes an upper wall 46a that curves downward, a side wall 46b that is continuously provided downward on one side of the upper wall 46a, and a side wall. An inclined lower wall 46c connected to 46b is provided. The upper wall 46a is engaged with the semi-cylindrical bulging protrusion 36 as shown in FIG.

  Moreover, the airflow outlet pipe portion 46 has an airflow outlet 47, and the airflow outlet 47 has a tip outlet 47 a that opens at the tip of the airflow outlet pipe portion 46 and a side outlet 47 b that opens at the side surface.

  Moreover, the inclined lower wall 46c of the airflow outlet pipe portion 46 is formed with an inclined outer surface 48 that is inclined in a direction away from the side outlet 47b with respect to the net filter 38c, as shown in FIG. In the state where the dust collection chamber 34 is closed by the main filter 38 as shown in FIG. 18, the inclined outer surface 48 is a net at the end on the side outlet 47b side as shown in FIGS. It is made to contact the filter 38c. Thereby, the opening direction is directed so that the front-end | tip exit 47a and the side part exit 47b may blow off airflow in the direction in alignment with the net filter 38c.

  Moreover, the dust container main body 32 has a front wall 49 straddling the pipe arrangement space 33 and the dust collection chamber 34 as shown in FIG. The inflow pipe portion 45 is disposed in the dust container main body 32 so as to straddle the pipe arrangement space 33 and the dust collection chamber 34, and is disposed in the vicinity of the front wall 49. Between the front wall 49 and the outer surface of the inflow pipe portion 45, a narrow gap (space) 50a necessary for fitting the inflow cylinder portion 45a of the inflow pipe portion 45 into the mounting hole 35 is formed.

Further, between the outer surface of the inflow pipe portion 45 and the inner surface of the front wall 49 of the dust collection chamber 34 (inner circumferential surface of the dust collection chamber 34), as shown in FIG. A blocking portion 50 is provided to block the air flow. The closing portion 50 includes a rib 51 provided on the inner surface of the front wall 49 and a rib 52 (see FIGS. 25 and 26) provided on the outer surface of the inflow pipe portion 45. The ribs 51 and 52 are extended in the direction in which the inflow pipe portion 45 extends. In addition, as shown in FIG. 21, the closing portion 50 is disposed at a position where it is blocked upstream of the gap 50 a that blocks the flow of air in the circumferential direction of the dust collection chamber 34.
<Filter locking mechanism>
The front wall 49 is covered with a front cover 53 as shown in FIG. A filter locking mechanism 54 shown in FIG. 27 is provided between the front cover 53 and the fine dust filter 39 (see FIGS. 28 and 29). The filter locking mechanism 54 includes a rod 55 that is held by the front cover 53 so as to be slidable within a predetermined range in the vertical direction, a spring receiving projection 56 that is positioned below the lower end of the rod 55 and is provided on the front cover, A spring 57 is interposed between the lower end of the rod 55 and the spring receiving projection 56 to bias the rod 55 upward, and an engagement pin 58 is provided to project from the lower end of the rod 55.

  Further, the filter locking mechanism 54 includes a link plate 59 formed in an L shape from the plate portions 59a and 59b and a connecting portion of the plate portions 59a and 59b (a bent portion of the link plate 59) on the front cover 53. A support shaft 60 is rotatably attached. A long hole 61 extending in the extending direction of the plate portion 59a is formed at the end of the plate portion 59a, and a locking claw portion 62 is formed at the tip of the plate portion 59b. An engagement pin 58 is inserted into the long hole 61 so as to be movable only in the longitudinal direction of the long hole 61.

  Furthermore, the filter locking mechanism 54 has a locking projection 63 protruding from the filter frame 39a. The locking projection 63 is made to correspond to the locking claw portion 62. The locking claw 62 is engaged with the locking projection 63 by the spring force of the spring 57 to hold the main filter 38 and the fine dust filter 39 in the closed state as described above.

Moreover, when the push button portion 55 a at the upper end of the rod 55 is pushed down against the spring force of the spring 57, the link plate 59 is rotated about the support shaft 60, and the locking claw portion 62 is moved from the locking projection 63. The main filter 38 and the fine dust filter 39 are rotated about the hinge shafts 42 and 43 by their own weights so that the lower end opening of the dust collecting chamber 34 is opened.
<Container locking mechanism>
Further, a container locking mechanism 64 for locking the dust collecting container main body 32 in the container housing recess 5 is provided at the upper end in the left-right direction of the front cover 53- as shown in FIGS. ing. The container locking mechanism 64 includes a locking claw 65 held at the upper end of the front cover 53 so as to be movable up and down within a predetermined range, a spring 66 biasing the locking claw 65 upward, and a front cover And an unlock button 67 that protrudes frontward from an insertion hole 53 a provided at the upper end of 53. The front cover 53 is formed with a recess 53b, and a container holding wall 53c is formed on the upper front side of the recess 53b.

  Moreover, in the front case 3 of the main body case 2, the dust collection container main body 32 is inserted and fitted into the container storage recess 5 as shown in FIGS. 1 and 2, located above the upper front end of the container storage recess 5. In this state, a locking wall portion 68 that locks the locking claw 65 as shown in FIG. 31 is formed.

  In addition, as shown in FIGS. 32 (a) to 32 (c), upward inclined cams 65a, 65a are formed on the lower side of the locking claw 65, and the downward inclined cam 67a is formed on the lock release button 67. , 67a are formed. The inclined cams 65a and 67a are engaged with each other, and when the lock release button 67 is pushed in, the inclined cam 67a pushes down the inclined cam 65a against the spring force of the spring 66, and pushes down the locking claw 65. It has become. As a result, the locking claw 65 is disengaged from the locking wall portion 68 at the top of the front cover 53.

Further, an inclined guide 69 that is inclined rearward and downward is provided at the upper end portion of the locking claw 65. The inclined guide 69 engages with the lower end of the locking wall 68 when the dust collecting container main body 32 is inserted into the container housing recess 5, and the locking claw 65 is engaged by the force for inserting the dust collecting container main body 32. A force to push down the spring 66 against the spring force of the spring 66 is generated. Thus, when the dust container main body 32 is inserted into the container housing recess 5, the locking claw 65 is pushed down by the locking wall portion 68 by the action of the inclined guide 69, and the locking claw 65 is engaged. When overcoming the stop wall portion 68, the locking claw 65 is pushed upward by the spring force of the spring 66 and locked to the rear surface of the locking wall portion 68, and the dust collecting container main body 32 is detached from the container housing recess 5. I am trying not to.
[Action]
Next, the operation of the vacuum cleaner having such a configuration will be described.

  In such a configuration, normally, as shown in FIG. 6, the distal end portion of the small diameter pipe 29 of the extension pipe 27 is used in a state of being fitted into the pipe fitting hole 17 of the main body case 2 together with the clearance nozzle 30. In this state, a power switch (not shown) is turned on to operate the electric blower 11.

  At this time, the suction negative pressure of the electric blower 11 acts on the dust collecting chamber 34 of the dust collecting container 31 through the filter 9, the fine dust filter 39 and the net filter 38 c of the main filter 38. The suction negative pressure acts on the suction chamber 22 of the suction port body 19 through the guide pipe 44, the lower suction pipe portion 13, the connection pipe 21 of the suction port body 19, the suction air passage 23, and the like.

  In this state, by grasping the handle 26a of the hand operation pipe 26 and moving the suction port body 19 back and forth, dust on the cleaning surface is sucked into the suction chamber 34 together with air by suction negative pressure. The air containing the sucked dust is guided to the guide pipe 44 through the suction air passage 23, the connection pipe 21, and the lower suction pipe portion 13. As shown in FIG. 21, the dust and air guided into the guide pipe 44 enter the dust collecting chamber 34 from the air outlet 47 of the guide pipe 44, that is, from the front outlet 47a and the side outlet 47b of the air outlet 47. (Flowed into the dust collection chamber 34) and flows along the net filter 38c as indicated by the arrow B1.

  In this way, the dust does not collide with the net filter 38c from a position away from it, flows along the net filter 38c in the circumferential direction of the dust collecting chamber 34, and accumulates in order from the closed portion 50. . Therefore, even if the air blown into the dust collecting chamber 34 contains pointed dust such as broken glass or relatively large dust such as pebbles, the dust is prevented from damaging the net filter 38c. The

  Further, as described above, a gap 50a necessary for incorporating the guide pipe 44 is formed between the inflow pipe portion 45 of the guide pipe 44 and the front wall 49. However, since the gap 50a is narrow, When dust accumulates in the gap 50a, it is not easy to remove the dust in the gap 50a when throwing away the dust.

  However, the closing portion 50 is located upstream of the gap 50a in the direction in which the dust D blown into the dust collecting chamber 34 flows, and the flow in the direction of the gap 50a is prevented at the portion of the closing portion 50. It can be avoided that dust accumulates in the gap 50a.

  Furthermore, the dust D is gradually compressed in the closed portion 50 described above. For this reason, dust can be efficiently stored in the dust collection chamber 34, and the capacity of the dust collection chamber 34 can be effectively utilized.

  On the other hand, the air blown from the airflow outlet 47 to the dust collecting chamber 34 gradually passes through the net filter 38 c as it flows in the circumferential direction of the dust collecting chamber 34, and then passes through the fine dust filter 39. At this time, fine dust contained in the air is collected by the fine dust filter 39. The air that has passed through the fine dust filter 39 passes through the filter 9 and is sucked into the electric blower 11. The sucked air is cooled after the inside of the electric blower 11 is discharged and exhausted to the atmosphere from an exhaust port (not shown).

  When using the clearance nozzle 30 or the like, the small-diameter pipe 29 is extracted from the pipe fitting hole 17 integrally with the clearance nozzle 30, while the connection pipe 21 of the suction port body 19 is erected to raise the suction air passage 23 and the connection pipe 21. The clearance nozzle 30 can be used by blocking communication with the shutter 24. At this time, the cleaner body 1 is carried and moved by grasping the handle 2a.

  When the dust in the dust collection chamber 34 is discarded after such cleaning, first, a hand is put into the recess 53b of the front cover 53 to hold the container holding wall 53c on the upper front side of the recess 53b.

  On the other hand, when the lock release button 67 is pushed in, the inclined cam 67a of the lock release button 67 pushes down the inclined cam 65a of the locking claw 65 against the spring force of the spring 66, and the locking claw 65 is pressed down. As a result, the locking claw 65 is disengaged from the locking wall 68 at the top of the front cover 53. In this state, the dust collecting container 31 can be removed from the container housing recess 5 by grasping the wall 53c and pulling out the dust collecting container 31 to the front side.

  Thereafter, when the push button portion 55a at the upper end of the rod 55 is pushed down against the spring force of the spring 57 while the wall portion 53c is gripped, the link plate 59 is rotated around the support shaft 60, and the engagement The pawl portion 62 is separated from the locking projection 63, the main filter 38 and the fine dust filter 39 are rotated about the hinge shafts 42 and 43 by their own weight, and the lower end opening of the dust collecting chamber 34 is opened to collect the dust. Dust in the chamber 34 falls downward. At this time, fine dust adhering to the fine dust filter 39 can also be dropped.

  Further, in order to close the lower end opening of the dust collecting chamber 34, the main filter 38 is rotated around the hinge shaft 42, and the filter frames 38a of the main filter 38 are positioned at the position restriction flanges 32b4 and 32b4 on both sides of the lower container portion 32b. The rectangular upper end surface of the filter frame 38a is brought into airtight contact with the rectangular lower end surface of the lower container portion 32b over the entire circumference.

  Further, the fine dust filter 39 is rotated about the hinge shaft 43 so that the pleated filter portion 39b of the fine dust filter 39 is fitted into the filter frame 38a of the main filter 38, and the filter frame 39a of the fine dust filter 39 is fitted. The square upper end face is brought into airtight contact with the square lower end face of the filter frame 38a over the entire circumference.

  Such rotation of the main filter 38 and the fine dust filter 39 may be performed simultaneously in a state where the pleated filter portion 39b is fitted in the filter frame 38a of the main filter 38.

  Then, by such a turning operation, the locking protrusion 63 provided on the fine dust filter 39 causes the R-shaped outer surface of the locking claw 62 provided on the L-shaped link plate 59 to be a spring force of the spring 57. Pushing against each other, the link plate 59 is rotated about the support shaft 60 and moved to the upper side of the locking claw 62. When the locking projection 63 moves to the upper side of the locking claw 62, the link plate 59 is restored to its original shape by the spring force of the spring 57, and engages with the locking claw 62, and the dust collection chamber 34. Is closed by the main filter 38 and the fine dust filter 39.

  Thereafter, in order to attach the dust container main body 32 in the container housing recess 5, the dust container main body 32 is inserted into the container housing recess 5 from the front side of the cleaner body 1. At this time, the inclined guide 69 is engaged with the lower end of the locking wall portion 68, and the locking claw 65 is pushed downward against the spring force of the spring 66 by the force of inserting the dust container main body 32. Thus, the locking claw 65 gets over the locking wall portion 68. When the locking claw 65 gets over the locking wall portion 68, the locking claw 65 is pushed upward by the spring force of the spring 66 and locked to the rear surface of the locking wall portion 68, and the dust collecting container main body 32. Cannot be removed from the container housing recess 5.

  As described above, the vacuum cleaner according to the embodiment of the present invention is provided with the inflow port (inflow cylinder portion 45a) through which air containing dust flows into one end side of the dust collection chamber 34 of the dust collection container body 32. And a guide air passage 44a for setting an inflow direction of air flowing into the dust collection chamber 34 from the inlet, and an air discharge port communicating with the suction opening 10 of the electric blower 11 is provided in the dust collection chamber. 34 is provided at the other end, and a net filter 38c is provided at the air outlet. Moreover, the airflow outlet 47 of the guide air passage 44a to the dust collecting chamber 34 is directed so that the air blown out from the airflow outlet 47 is close to the net filter 38c and flows in a direction along the net filter 38c. It has been.

  According to this configuration, the air blown into the dust collection chamber 34 from the airflow outlet 47 flows in a direction along the net filter 38c. Therefore, the air flowing into the dust collection chamber 34 is relatively free of glass pieces, pebbles, sand, or the like. Even if a large amount of dust is contained, the blown-out dust has a small inertial force that pierces the net filter 38c, and can prevent the dust from damaging the net filter 38c.

  In the vacuum cleaner according to the embodiment of the present invention, the guide air passage 44a is formed in an air flow guide portion (guide pipe 44) disposed in the dust collecting chamber 34, and the air flow guide portion (guide guide). The pipe 44) includes an inflow pipe portion 45 extending in a direction substantially perpendicular to the net filter 38c, and an airflow outlet pipe portion 46 bent from the inflow pipe portion 45 in a direction along the net filter 38c. Moreover, the outer surface of the airflow outlet pipe portion 46 is brought into contact with the net filter 38c, and the outer surface of the inflow pipe portion 46 and the inner peripheral surface (the inner surface of the front wall 49) of the dust collecting chamber 34 adjacent thereto. A blocking portion 50 that prevents the flow to the gap 50a is provided between the outer surface of the inflow pipe portion 46 and the inner peripheral surface of the dust collecting chamber 34 (the inner surface of the front wall 49).

  According to this configuration, although the gap 50a necessary for incorporating the guide pipe 44 is formed between the inflow pipe portion 45 and the front wall 49 of the guide pipe 44, the closing portion 50 has the gap 50a. On the other hand, it is located upstream in the direction in which the dust blown into the dust collecting chamber 34 flows, and the flow of dust in the direction of the gap 50a is blocked at the closed portion 50, so that the dust accumulates in the gap 50a. This can be avoided.

  Furthermore, the dust D is gradually compressed in the closed portion 50 described above. For this reason, dust can be efficiently stored in the dust collection chamber 34, and the capacity of the dust collection chamber 34 can be effectively utilized. For this reason, the dust collecting container 31 can be downsized as a whole.

  Furthermore, in the vacuum cleaner according to the embodiment of the present invention, the airflow outlet pipe portion 46 is bent toward the center of the net filter 38c, and the airflow outlet 47 is opened at the tip of the airflow outlet pipe portion 46. The air outlet pipe portion 46 is provided with an inclined outer surface 48 which is inclined in a direction away from the side outlet 47b with respect to the net filter 38c. ing.

  According to this configuration, a space is formed between the inclined outer surface 48 and the net filter 38c, and dust does not easily accumulate in this space. Therefore, even if the inside of the dust collecting chamber 34 begins to be filled with dust, the net filter 38c is completely There is no clogging. As a result, even if the inside of the dust collection chamber 34 begins to be filled with dust, an air flow toward the electric blower 11 occurs in the space formed between the inclined outer surface 48 and the net filter 38c. A large load can be avoided.

  Further, since the inclined lower wall 46c constituting the inclined outer surface 48 is in a positional relationship facing the net filter 38c, sharp dust such as nails flows from the inflow port 46 and then passes through the inflow pipe portion 45 to the net. Even if it rushes toward the filter 38c, the net filter 38c can be prevented from being damaged by hitting the inclined lower wall 46c.

  In the present embodiment, the net filter 38c is used as the thin plate filter. However, the thin plate filter is not limited to this, and is a generic term for filters formed in a thin plate shape as a whole. If this is the case, another filter such as a pleated filter may be employed.

  Further, in the present embodiment, the inflow cylinder portion 45a of the guide pipe 44 is attached to the attachment hole 35 of the dust collecting container 31 as the inflow port. However, the present invention is not limited to this and communicates with the inlet of the dust collecting container. If so, the inlet of the guide pipe 44 may be provided apart from the inlet of the dust collecting container.

  Furthermore, in this Embodiment, it was set as the structure which attaches the guide pipe 44 to the dust collection container 31, However, It is not restricted to this, You may shape | mold the dust collection container 31 and the guide pipe 44 integrally.

It is a perspective view of the upright type vacuum cleaner concerning this invention. It is a side view of the vacuum cleaner shown in FIG. It is a perspective view of the vacuum cleaner of the state which removed the dust collecting container of FIG. FIG. 4 is a partially enlarged view of a container housing recess in FIG. 3. It is explanatory drawing which attached the filter to the bottom part of the container storage recessed part of FIG. It is a longitudinal cross-sectional view of the vacuum cleaner of FIG. (A) is a partially enlarged explanatory view of FIG. 6, and (b) is a schematic explanatory view of a container housing recess. It is expansion explanatory drawing of the suction inlet body of FIG. It is the perspective view which looked at the dust collecting container of FIG. 1 from the front diagonal side. FIG. 10 is a left side view of the dust collection container of FIG. 9. It is a top view of the dust collecting container of FIG. It is a rear view of the dust container of FIG. It is a bottom view of the dust collecting container of FIG. It is a front view of the dust collecting container of FIG. It is the perspective view which abbreviate | omitted a part of dust container of FIG. 9, and was seen from the bottom face side. It is action | operation explanatory drawing of the dust container of FIG. It is action | operation explanatory drawing of the dust container of FIG. It is a longitudinal cross-sectional view of the dust collecting container of FIG. It is the perspective view which abbreviate | omitted and shown a part while omitting some dust collection containers of FIG. FIG. 20 is a perspective view showing the dust collecting container of FIG. 9 with a part thereof omitted and a part cut away, as viewed from a different angle from FIG. 19. FIG. 10 is an operation explanatory diagram of the dust collecting container of FIG. 9. It is a perspective view of the guide pipe of FIG. It is the perspective view which looked at the guide pipe of FIG. 18 from the angle different from FIG. It is a front view of the guide pipe of FIG. It is a right view of the guide pipe of FIG. It is a rear view of the guide pipe of FIG. It is explanatory drawing of the filter latching mechanism of the dust collecting container shown in FIG. It is explanatory drawing which looked at the filter latching mechanism of FIG. 27 from the back side. It is a fragmentary sectional view of the filter locking mechanism of FIG. It is explanatory drawing of the container latching mechanism of the dust collecting container of FIG. It is a fragmentary sectional view which shows the relationship between the latching claw of FIG. 30 and the latching wall part of a main body case. (A)-(c) is explanatory drawing which shows the relationship between the latching claw of a container latching mechanism, and a lock release button.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner main body 10 ... Suction opening 11 ... Electric blower 34 ... Dust collection chamber 38c ... Net filter 44 ... Guide pipe (airflow guide part)
44a ... guide air passage 45 ... inflow pipe portion 45a ... inflow cylinder portion (inlet)
46 ... Airflow outlet pipe part 47 ... Airflow outlet 47a ... Tip outlet 47b ... Side part outlet 48 ... Inclined outer surface 49 ... Front wall 50 ... Clogging part 50a ... Gap

Claims (6)

A vacuum cleaner body equipped with an electric blower;
A dust collecting container provided on the upstream side of the electric blower ,
The dust collection container is provided at an inlet through which air containing dust flows, a dust collection chamber for storing dust flowing in from the inlet, and a bottom surface of the dust collection chamber, and communicates with a suction opening of the electric blower An air discharge port, a thin plate-like filter provided in the air discharge port, and a guide air passage, and air containing dust flowing in from the inflow port toward the thin plate filter from one end. An airflow guide for guiding into the dust collection chamber,
The air flow guide portion is provided at the other end thereof in contact with or close to the thin plate filter, and the air flow outlet is arranged so that the blown air flows in a direction along the thin plate filter at the downstream end portion. A vacuum cleaner characterized by having an opening. The vacuum cleaner according to claim 1, wherein the airflow guide portion includes an inflow pipe portion extending in a direction substantially perpendicular to the thin plate filter. The airflow guide portion includes an airflow outlet pipe portion that is bent in a direction along the thin plate-like filter from the inflow pipe portion and opens the airflow outlet,
  The vacuum cleaner according to claim 2, wherein an outer surface of the airflow outlet pipe portion is in contact with or close to the thin plate filter. A blocking portion that prevents the flow of air to the gap between the outer surface of the inflow pipe portion and the inner peripheral surface of the dust collection chamber adjacent thereto is an outer surface of the inflow pipe portion and the inner peripheral surface of the dust collection chamber. The vacuum cleaner according to claim 2, wherein the vacuum cleaner is provided between the two. A vacuum cleaner body equipped with an electric blower;
A dust collecting container provided on the upstream side of the electric blower,
The dust collection container is provided at an inlet through which air containing dust flows, a dust collection chamber for storing dust flowing in from the inlet, and a bottom surface of the dust collection chamber, and communicates with a suction opening of the electric blower An air outlet, a thin plate-like filter provided in the air outlet, and an airflow guide that has a guide air passage and guides air containing dust flowing in from the inlet into the dust collecting chamber from one end. With
The air flow guide portion is provided at the other end thereof in contact with or close to the thin plate filter, and the air flow outlet is arranged so that the blown air flows in a direction along the thin plate filter at the downstream end portion. An inflow pipe portion extending in a direction substantially perpendicular to the thin plate filter and an air flow outlet pipe portion that is bent in a direction along the thin plate filter from the inflow pipe portion to open the air flow outlet. And an outer surface of the airflow outlet pipe portion is brought into contact with or close to the thin plate-like filter, to a gap between the outer surface of the inflow pipe portion and the inner peripheral surface of the dust collecting chamber adjacent thereto. A vacuum cleaner characterized in that a blocking portion for blocking the flow of air is provided between an outer surface of the inflow pipe portion and an inner peripheral surface of the dust collecting chamber. Before SL airflow outlet pipe portion, the inclined outer surface which is inclined with opposing the thin plate-like filter from the portion in contact with or close to said thin plate-like filter in a direction away from the said thin plate-like filter is provided The electric vacuum cleaner according to claim 3 or 5, wherein

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