JP2010274041A - Electric cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric cleaner which can keep an air volume uniform when being used as a blower by utilizing the exhaust air from the electric blower without being affected by an amount of dust captured in the dust collecting section. <P>SOLUTION: On the body case 11, a ventilation chamber 22 to which the outside air can be introduced, a blower housing chamber 21 which communicates with the ventilation chamber from the downstream side, and an exhaust section 19 are installed, and the electric blower 28 which sucks in air in the ventilation chamber 22 is housed in the housing chamber 21. A suction pipe (intake air switching member) 41 is installed in a manner to be movable to a first position where the dust in the dust-contained air which has been sucked in at the time of dust suction is collected in the dust collecting case (dust collecting section) 31, and a second position where the dust collection is interrupted when being used as the blower. An exhaust switching member 35 is installed in a manner to be movable to a first exhaust position where the exhaust of the blower 28 is discharged to the outside of the case 11 through the exhaust section 19 at the time of dust suction, and a second exhaust position where the exhaust of the blower 28 is made to flow out to the outside of the case 11 as the blower when being used as the blower. The introduction of the outside air to the ventilation chamber is shut off by an outside air introducing means 38 at the time of dust suction, and at the same time, the outside air is introduced to the ventilation chamber without going through the dust collecting case 31 when being used as the blower. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner capable of switching between dust absorption and a blower.

  The main body is divided into a dust collection chamber equipped with a filter and an exhaust chamber containing the motor fan in communication with the dust collection chamber, and an intake port leading to the filter and an exhaust port leading to the exhaust chamber are provided on the lid covering the main body. A vacuum cleaner provided with a hose connection part for selectively communicating a hose with either one of an intake port or an exhaust port is known as a prior art (see, for example, Patent Document 1).

  The hose connection portion of the vacuum cleaner is attached to the lid so as to be rotatable about the center of the horizontal plate-like lid. A hose is fixed to the hose connection part, and a handle for carrying out the rotation operation of the lid is formed.

  Therefore, dust is sucked through the hose in a state where the lid is manually rotated and the hose communicates with the air inlet. In such normal cleaning, dust sucked from the hose is filtered by a filter in the dust collecting chamber and then discharged from the exhaust port by a motor fan. In addition, when the lid is manually rotated and the hose communicates with the exhaust port, the exhaust from the motor fan is ejected from the hose and can be used as a blower. In the case of use as such a blower, the air sucked from the intake port passes through the filter in the dust collection chamber, and then is blown out from the hose through the hose connection portion from the exhaust port by the motor fan and used as a blower. The

JP-A-6-304104 (paragraphs 0006-0010, FIGS. 1 to 3)

  In the prior art, whether dust is sucked or blower is used, the airflow sucked from the air inlet leading to the filter accommodated in the dust collecting chamber passes through the filter. In such a vacuum cleaner, the ventilation resistance of the filter changes as the amount of dust trapped in the filter changes during normal cleaning by dust absorption.

  Therefore, when used as a blower, the amount of air blower blown from the hose through the hose connection portion from the exhaust port is affected by the amount of dust trapped by the filter. Therefore, there is a problem that the blower performance, that is, the air volume for the blower cannot be kept constant.

  In order to solve the above problems, the vacuum cleaner of the present invention comprises a main body case, an electric blower, a dust collecting part, an intake air switching member, an exhaust gas switching member, and an outside air introducing means. A ventilation chamber into which outside air can be introduced, a blower storage chamber communicating from the downstream side to this chamber, and an exhaust section are provided, and an electric blower that sucks air in the ventilation chamber is stored in the blower storage chamber. The dust switching unit is movably provided between a first position for collecting dust in the dust-containing air sucked into the dust collecting section and a second position for interrupting dust collection when blowing. A first exhaust position for exhausting the exhaust of the electric blower through the exhaust part to the outside of the main body case, and a second exhaust position for discharging the exhaust of the electric blower to the outside of the main body case as a blower during the blower. In the outside air introduction means, With cut off the introduction of outside air into the ventilation chamber during, and characterized in that so as to introduce the outside air into the ventilation chamber without passing through the dust collecting part when the blower.

  According to the vacuum cleaner of the present invention, when the blower is blown using the exhaust from the electric blower that sucks the air in the ventilation chamber, the outside air can be introduced into the ventilation chamber without going through the dust collecting portion. There is an effect that the air volume at the time of blower can be kept constant without being influenced by the amount of dust trapped in the dust collecting section.

It is the perspective view which showed the vacuum cleaner which concerns on one embodiment of this invention. It is the perspective view which showed the vacuum cleaner main body with which the electric vacuum cleaner of FIG. 1 was provided from the front side. It is the perspective view which showed the vacuum cleaner main body with which the electric vacuum cleaner of FIG. 1 was provided from the rear side. (A) is a side view which shows the cleaner body of FIG. 2 in the state in which the suction pipe exists in the 1st position for dust absorption. (B) is a side view showing the cleaner body of FIG. 2 in a state where the suction pipe is in the second position for blower. It is the perspective view which decomposed | disassembled and showed the cleaner main body of FIG. It is the perspective view which showed the vacuum cleaner main body of FIG. 2 in the state where the suction pipe was in the 1st position and one case member was removed. It is sectional drawing which showed the cleaner body of FIG. 2 in the state where the suction pipe was in the 1st position and one case member was removed. It is the perspective view which notched and showed a part around the suction pipe of the cleaner body of FIG. 2 in the state which has a suction pipe in the 1st position. It is the perspective view which showed the cleaner main body of FIG. 2 in the state where the suction pipe was in the 2nd position and one case member was removed. It is sectional drawing which showed the cleaner main body of FIG. 2 in the state where the suction pipe was in the 2nd position and one case member was removed. It is the perspective view which notched and showed a part around the suction pipe of the cleaner body of FIG. 2 in the state which has a suction pipe in a 2nd position. It is a back view which shows a part of one case member of the cleaner body of FIG. It is the perspective view which showed a part of vacuum cleaner main body of FIG. 2 in the state where the suction pipe was in the 1st position and one case member and dust collection case were removed. It is the perspective view which showed the suction pipe of the cleaner body of FIG. 2 from the front side. It is the perspective view which showed the suction pipe of the cleaner body of FIG. 2 from the rear side. It is the perspective view which showed the pipe body which the suction pipe of FIG. 14 had from the back side. It is sectional drawing shown notionally in the state which sucks in the vacuum cleaner which concerns on other embodiment of this invention. It is sectional drawing which showed notionally the state which blows the electric vacuum cleaner which concerns on other embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.

  Reference numeral 1 in FIG. 1 denotes a vacuum cleaner such as a handy type vacuum cleaner. The electric vacuum cleaner 1 includes a vacuum cleaner body 2 and a suction air passage member 3. In FIG. 1, reference numeral 7 denotes a power cord with a power plug 8 attached to the tip, and the power cord 7 is drawn out of the cleaner body 2.

  The suction air passage member 3 has an extension pipe 4 and a suction port body 5. The extension tube 4 has an outer tube 4a and an inner tube 4b which are combined so as to be expandable and contractable in the axial direction. The rear end portion of the extension pipe 4 is detachably connected to the inside of a suction pipe 41 described later of the cleaner body 2.

  The suction inlet 5 is for a floor suitable for cleaning a floor surface in a room that is a surface to be cleaned, and has a head portion 5a that is long in the left-right direction and a connecting pipe 5b. A suction opening (not shown) extending in the longitudinal direction is opened on the lower surface of the head portion 5a. The connecting pipe 5b protrudes rearward from the longitudinal center of the head part 5a. The rear end portion of the connection pipe 5b is detachably connected by fitting to the front end portion of the extension pipe 4, that is, the inner side of the front end portion of the inner pipe 4b. The connecting pipe 5b can be detachably connected to the suction pipe 41, which will be described later, with the extension pipe 4 removed.

  As shown in FIGS. 5 to 7, 9, and 10, the vacuum cleaner main body 2 includes a main body case 11, an electric blower 28, a dust collection unit such as a dust collection case 31, an exhaust switching member 35, and an intake switching member such as a suction pipe. 41, an outside air introduction means 38, a lock means 51, and the like. Details will be described below.

  As shown in FIGS. 2 and 3, the synthetic resin main body case 11 is assembled by screwing a pair of case members 12 divided in the left-right direction. The main body case 11 has a handle portion 13 at the top thereof. The front portion of the main body case 11 is formed to have a thickness that allows the user to hold the handle portion 13 with one hand and the other hand, for example, the index finger.

  The user holds the handle portion 13 with one hand to lift the vacuum cleaner main body 2 above the floor surface, make the extension pipe 4 slant, and contact the suction port body 5 with the floor surface. In this state, it is possible to perform cleaning work with dust absorption, and it is possible to lift the entire vacuum cleaner 1 so that the suction port body 5 is separated from the floor surface when blowering is performed as will be described later. . A switch 14 that is pushed and operated with the thumb of one hand of the user holding the handle portion 13 is attached to the front portion of the handle portion 13. The operation of the switch 14 selects the driving of the electric blower 28 and its strength and stop.

  As shown in FIGS. 7 and 10, the main body case 11 includes an upper wall 11 a that faces the handle portion 13 from below, and a partition wall 11 b that is provided below the upper wall 11 a. In the main body case 11, a dust collecting portion storage chamber 16 is defined between the upper wall 11a and the partition wall 11b. The rear end of the dust collection chamber 16 is open to the rear surface of the main body case 11.

  As shown in FIGS. 5 and 12, the main body case 11 has a front partition 11 c that partitions the suction pipe support chamber 17. The front partition 11c includes an arcuate arc wall and an upper wall extending horizontally from the upper end of the arc wall to the front. The suction pipe support chamber 17 is provided on the front side of the dust collecting portion storage chamber 16. The suction pipe support chamber 17 is open to the front surface of the main body case 11.

  The front end portions of the upper wall 11a and the partition wall 11b are continuous with the front partition wall 11c from the rear side. The partition wall 11b has a portion inclined so as to approach the downward convex portion 11d formed at the front end portion of the upper wall 11a as it approaches the front partition wall 11c. The downward projecting portion 11d forms a part of the front partition 11c. An inlet receiving portion 18 (see FIGS. 12 and 13) is formed between the downward convex portion 11d and the front end portion of the partition wall 11b. The dust collection unit storage chamber 16 and the suction pipe support chamber 17 are arranged in the front-rear direction and communicated via the inlet receiving unit 18.

  As shown in FIGS. 1 to 5 and the like, the main body case 11 has an exhaust part 19. For example, the exhaust unit 19 is provided in the case member 12 so as to communicate the dust collecting unit storage chamber 16 and the outside of the main body case 11. These exhaust parts 19 consist of a plurality of slits arranged in parallel, for example. 5, 12, and 13, reference numeral 11 e indicates a rib provided on the inner surface of the dust collecting portion storage chamber 16, and the exhaust portion 19 is blocked by a dust collecting case 31 described later by the rib 11 e. I am trying not to.

  As shown in FIGS. 6, 7, 9, 10, and the like, the main body case 11 includes a blower storage chamber 21 and a blower storage chamber 21 below the partition wall 11 b and the front partition wall 11 c that are continuous with each other. A ventilation chamber 22 is provided on the front side. The blower storage chamber 21 is provided directly below the dust collection unit storage chamber 16. The ventilation chamber 22 is provided on the intake side (upstream side) of the electric blower 28 described later. Specifically, in the case of the present embodiment, a dust collection chamber 22 is provided directly below the suction pipe support chamber 17, and the upper end portion of the ventilation chamber 22 is opened as an inlet portion 22a. The suction pipe support chamber 17 and the ventilation chamber 22 are communicated with each other through the inlet portion 22a. 7 and 10, reference numeral 17 b indicates an air passage closing portion provided between the ventilation chamber 22 and the suction pipe support chamber 17 continuously in front of the inlet portion 22 a of the ventilation chamber 22.

  The blower storage chamber 21 and the ventilation chamber 22 arranged in the front-rear direction are partitioned by a breathable guard plate 23 disposed therebetween. Each of the case members 12 has a pair of support portions 24 and 25 that support the guard plate 23 and are spaced apart from each other, and these support portions 24 and 25 are screws for connecting the case members 12 to each other. Also serves as a screw receiver to be screwed. The upper support part 24 is provided so as to be continuous with the lower part of the front partition 11c and the rear side of the inlet part 22a, and the support part 24 is formed with a stopper part 24a. The stopper portion 24a also serves as a support portion of an electric blower 28, which will be described later, below the partition wall 11b so as to protrude rearward from the support portion 24. The rear end of the stopper portion 24a extends from the partition wall 11b. is seperated.

  Each of the pair of case members 12 has a bearing boss 26. The bearing boss 26 is provided in the blower storage chamber 21 and in the vicinity of the inclined portion of the partition wall 11b while being spaced apart rearward from the stopper portion 24a. A portion of each case member 12 between the bearing boss 26 and the stopper portion 24a forms an end portion of a curved surface portion 12a (see FIGS. 2 and 3) formed on the case member 12. Thereby, as shown in FIG. 13, with the exhaust air passage switching member 35 described later positioned in the stopper portion 24a, the exhaust air passage switching member 35 and the end of the curved surface portion 12a are separated from each other, A ventilation gap G (see FIGS. 12 and 13) is formed between the exhaust air path switching member 35 and the case member 12.

  As shown in FIGS. 6, 7, 9, and 10, the electric blower 28 is positioned in the lower portion of the main body case 11, that is, in the blower storage chamber 21 that is separated downward with respect to the handle portion 13. Built in. The electric blower 28 includes an electric part 28a and a fan part 28b. The fan part 28b has a fan air inlet (not shown) at the front center part thereof, and this air inlet faces the guard plate 23 from the rear side. The outer periphery of the fan part 28b is supported by the curved surface part 12a. The space around the electric blower 28 and the gap G can communicate with each other. The air discharged from the electric blower 28 by the rotation of the fan (not shown) of the fan portion 28b passes between the bearing boss 26 and the stopper portion 24a, and further between the exhaust air path switching member 35 and the case member 12. It is possible to flow out of the blower storage chamber 21 through the gap G.

  The dust collection case 31 includes a case member 32 and a case lid 33 and is formed in a shape substantially similar to that of the dust collection unit storage chamber 16. The dust collection case 31 can be taken into and out of the dust collection unit storage chamber 16 from the rear side of the main body case 11. Both front and rear ends of the case member 32 are opened. The case lid 33 is detachably fitted to the rear end portion of the case member 32. When the case member 32 opens the rear end opening of the case member 32 and discards the dust accumulated in the case member 32, the case lid 33 is removed from the case member 32. Removed. The dust collecting case 31 is stored in the dust collecting portion storage chamber 16 in a state where the inlet 32a (see FIGS. 7 and 10), that is, the front end opening of the case member 32 is inserted into the inlet receiving portion 18 from the rear side. The

  This stored state is held by holding means 34 attached to the main body case 11. The holding means 34 includes an operation member 34a attached to the handle portion 13 in a state exposed on the rear surface thereof (see FIG. 3), a lock member 34b interlocked with the operation member 34a, and a spring (not shown) that urges the lock member 34b. Consists of.

  The operation member 34 a can be pushed in from the rear side of the main body case 11. By this operation, the lock member 34b is pulled up against the spring that biases the lock member 34b downward. The lower end of the lock member 34b can be removably engaged with a recess 32b (see FIGS. 7 and 10) provided in the case member 32.

  When the lock member 34b is engaged with the recess 32b, the dust collection case 31 is held at the storage position where it is properly inserted into the dust collection unit storage chamber 16. In this state, the inlet 32 a of the dust collecting case 31 is received by the inlet receiving portion 18. When the operation member 34a is pushed in, the lock member 34b is pulled up and removed from the recess 32b, so that the dust collection case 31 can be taken out from the dust collection unit storage chamber 16. The dust collection case 31 can be taken out from this state by utilizing the weight of the dust collection case 31 by tilting the cleaner body 2 so that the case lid 33 faces downward.

  As shown in FIG. 5, the exhaust switching member 35 is formed by providing a pivot portion 35a at one end of a flat plate. The exhaust gas switching member 35 is mounted in the main body case 11 so as to be rotatable about the bearing boss 26 by pivotally fitting the pivot portion 35a to the bearing boss 26 of the case member 12, respectively.

  The exhaust gas switching member 35 can move between the first exhaust position and the second exhaust position. FIGS. 6, 7, and 13 show a state in which the exhaust switching member 35 is rotated and disposed at the first exhaust position. In this state, the exhaust gas switching member 35 is positioned at the stopper portion 24a away from the inclined portion of the partition wall 11b.

  As shown in FIG. 13 and the like, a ventilation groove 36 is formed in the inclined portion of the partition wall 11b. The ventilation grooves 36 of both case members 12 are combined to form a ventilation hole. When the exhaust switching member 35 is disposed at the first exhaust position, the ventilation groove (vent hole) 36 is opened. Therefore, during the operation of the electric blower 28, the air discharged from the electric blower 28 can flow out of the blower storage chamber 21 through the gap G and then flow into the dust collecting portion storage chamber 16 through the ventilation groove 36. .

  9 and 10 show a state where the exhaust switching member 35 is rotated and disposed at the second exhaust position. In this state, the exhaust gas switching member 35 is positioned so as to be separated from the stopper portion 24a and overlap the side surface of the inclined portion of the partition wall 11b. When the exhaust switching member 35 is disposed at the second exhaust position, the exhaust groove (air hole) 36 is closed by the exhaust switching member 35. Therefore, during the operation of the electric blower 28, the air discharged from the electric blower 28 flows out between the bearing boss 26 and the stopper portion 24a, but cannot flow into the dust collecting portion storage chamber 16. At the same time, the exhaust switching member 35 disposed at the second exhaust position is used as a guide for guiding the air flowing out from the blower storage chamber 21 to the suction pipe 41 described later.

  The suction pipe 41 includes a pipe body 42 shown in FIG. 16 and the like, and a pair of left and right pipe body covers 43 shown in FIG. 14 and FIG. The tube body cover 43 is attached to the rear portion of the tube body 42 so as to cover the left and right sides. The suction pipe 41 has a first ventilation part 44, a second ventilation part 45, an opening / closing part 46, a filter such as a net filter 47, and an outside air introduction air passage 48 at the rear part thereof.

  That is, as shown in FIGS. 7 and 10, the first ventilation portion 44 is provided immediately behind the front end opening of the suction pipe 41. The rear end of the first ventilation portion 44 is slightly projected through the rear end portion of the tube cover 43 (see FIG. 15). The second ventilation part 45 is branched and provided so as to protrude downward from the first ventilation part 44. The lower end of the second ventilation portion 45 also slightly protrudes through the lower surface portion of the tube cover 43 (see FIG. 15). The opening / closing part 46 is provided between the first ventilation part 44 and the second ventilation part 45. The net filter 47 drawn with a thick line for convenience of explanation in FIGS. 7 and 10 divides the first ventilation part 44 and the second ventilation part 45 and is provided at a branch point of these ventilation parts.

  The net filter 47 and the upper surface of the opening / closing part 46 are continuous. At the same time, as shown in FIG. 7, the upper surface of the net filter 47 and the opening / closing part 46 is arranged in the state where the suction pipe 41 is arranged at a first position which will be described later, and the inlet receiving part 18 and the dust collection inserted therein. It is inclined so as to gradually increase as it approaches the inlet 32a of the case 31, and continues to the inlet receiving portion 18 and the lower ends of the inlet 32a.

  The outside air introduction means 38 has an outside air introduction air passage 48 and the air passage closing portion 17b. As shown in FIGS. 8 and 11, the outside air introduction air passage 48 is formed by a gap secured between the rear portion of the tube body 42 and the tube body cover 43. The air passage inlet 48 a of the outside air introduction air passage 48 is opened on the upper surface portion of the tube body cover 43, and the air passage outlet 48 b of the outside air introduction air passage 48 is opened on the lower surface portion of the tube body cover 43. As shown in FIG. 11, the air passage inlet 48 a is partitioned by the upper surface portion of the tube body 42, and is provided separately on the left and right sides of the upper surface portion. As shown in FIG. 5, the air passage outlet 48 b is provided as a substantially elliptical hole on the front side of the second ventilation portion 45.

  The suction pipe 41 is disposed on the upstream side of the electric blower 28. In other words, in this embodiment, the rear portion of the suction pipe 41 is inserted into the main body case 11. Specifically, the suction pipe 41 is supported by the main body case 11 by being fitted into the suction pipe support chamber 17. The front portion of the suction pipe 41 supported in this way protrudes to the front side of the main body case 11. At the same time, the extension pipe 4 is connected to the suction pipe 41 from the front side. The suction pipe 41 is provided so as to be able to turn in the vertical direction along the arcuate wall portion of the suction pipe support chamber 17 with the rear part as the center, and FIG. 4 (A) and FIGS. 4 and the second position for the blower shown in FIGS. 4B and 9 to 11.

  The rotation of the suction pipe 41 and the rotation of the exhaust gas switching member 35 are interlocked. For this purpose, an engagement portion 41a is formed at the rear end portion of the suction pipe 41, and the free end of the exhaust gas switching member 35 is engaged with the engagement portion 41a. As the suction pipe 41 at the first position is rotated to the second position, the engagement portion 41a is displaced upward, so that the exhaust gas switching member 35 is rotated to the second exhaust position. As the suction pipe 41 at the position is rotated to the first position, the engaging portion 41a is displaced downward, whereby the exhaust gas switching member 35 is rotated to the first exhaust position.

  The lock means 51 locks the suction pipe 41 in the first position or the second position. As shown in FIG. 5 and the like, the first lock convex part 52, the second lock convex part 53, the lock button 54, a lock spring 55, and the like.

  As shown in FIG. 12, two first lock protrusions 52 are provided so as to protrude from the inner surface of the case member 12, specifically, the inner surface of the suction pipe support chamber 17. These first lock projections 52 communicate with the suction pipe support chamber 17 and are separated by 180 degrees around a through hole 56 provided in the case member 12. Similarly, two second lock projections 53 are also provided on the inner surface of the suction pipe support chamber 17 of the case member 12, and these second lock projections 53 are also separated by 180 degrees around the through hole 56. Yes. The first lock convex portion 52 and the second lock convex portion 53 are adjacent to each other along the circumferential direction of the through hole 56. The through holes 56 are opened on both side surfaces of the front portion of the main body case 11.

  The lock button 54 includes a button portion 54a passed through the through hole 56, a button base 54b having a larger diameter than the button portion 54a and the through hole 56, and a pair of engagement grooves 54c formed on the outer periphery of the button base 54b. It is formed. The engagement groove 54 c can be engaged with and disengaged from the first lock convex portion 52 or the second lock convex portion 53. The suction pipe 41 is held at the first position when the engagement groove 54c is engaged with the first lock convex part 52, and the suction pipe 41 is held when the engagement groove 54c is engaged with the second lock convex part 53. Is held in the second position.

  The lock spring 55 is sandwiched between a spring receiver 58 provided on the tube cover 43 and the button portion 54a, and the lock button 54 is attached so that the tip of the button portion 54a protrudes from the side surface of the main body case 11. It is fast. By this urging, the engagement groove 54 c is held in a state of being engaged with either the first lock convex portion 52 or the second lock convex portion 53. The tube cover 43 is formed with a receiving recess 59 for receiving the pushed lock button 54 when the lock button 54 is pushed.

  4A and 6 to 8 show a state in which the engagement groove 54c of the lock means 51 is engaged with the first lock convex portion 52, and the suction pipe 41 is disposed at the first position. Yes. In this state, the suction pipe 41 is supported substantially horizontally. Accordingly, the first ventilation portion 44 is continuous with the inlet 32a of the dust collecting case 31 from the front side, and the opening / closing portion 46 is detached below the inlet 32a of the dust collecting case 31 and the inlet 32a is opened. And the second ventilation part 45 communicates with the ventilation chamber 22.

  Furthermore, in the state where the suction pipe 41 is disposed at the first position, the outside air introduction air passage 48 is substantially in a state of not functioning as an air passage. That is, the air passage inlet 48a of the outside air introduction air passage 48 is in a position covered by the front end portion of the handle portion 13, and the air passage outlet 48b of the outside air introduction air passage 48 is in close proximity to the air passage closing portion 17b. The suction force does not act on the outside air introduction air passage 48. Further, the exhaust switching member 35 is positioned at the first exhaust position where the suction pipe 41 is positioned at the stopper position 24a and the ventilation groove 36 is opened in response to the suction pipe 41 being positioned at the first position.

  In normal cleaning with dust suction, the vacuum cleaner 1 is used with the suction air passage member 3 connected to the suction pipe 41. In this case, when the user holds the handle portion 13 and lifts the cleaner body 2 from the floor surface, the weight of the extension pipe 4 or the like acts on the suction pipe 41. Since it is locked in the 1 position, the suction pipe 41 does not rotate downward without permission.

  By using the electric vacuum cleaner 1 by driving the electric blower 28 in this state, cleaning with dust absorption can be performed. In this cleaning, dust in the dust-containing air sucked into the suction pipe 41 through the suction air passage member 3 enters the dust collecting case 31 from the first ventilation portion 44 of the suction pipe 41 through the inlet 32a due to its inertia. Thus, the dust is collected in the dust collection case 31. On the other hand, since the negative intake pressure of the electric blower 28 acts on the ventilation chamber 22, the air flowing through the first ventilation portion 44 is sucked through the second ventilation portion 45 communicating with the ventilation chamber 22. . Therefore, in the net filter 47, dust having a mass heavier than air is separated from air having a mass heavier than dust.

  In such separation, light dust such as cotton dust is filtered by the net filter 47 and captured on the surface of the net filter 47. When the amount captured by the net filter 47 increases to some extent, the dust adhering to the surface of the net filter 47 is peeled off by the momentum of the airflow that flows along the surface of the net filter 47 and enters the inlet 32a. In this case, since the net filter 47 is inclined so as to become higher toward the rear side, the dust on the surface of the net filter 47 can be easily peeled off by the airflow that is going to rise along this inclination. The dust thus peeled off from the net filter 47 is stored in the dust collection case 31.

  As described above, the exhaust path during cleaning with the suction pipe 41 locked in the first position is as follows. The air sucked into the electric blower 28 from the ventilation chamber 22 through the guard plate 23 is discharged from the electric blower 28 and then passes through the gap G below the exhaust air passage switching member 35 at the first exhaust position. As a result, a triangular space S1 (see FIG. 7) defined by the exhaust air path switching member 35, the inclined portion of the partition wall 11b and the opening / closing portion 46 is reached, and passes through the ventilation groove 36 facing the space S1. Then flows into the dust collection chamber 16. Therefore, the air in the blower storage chamber 21 is discharged to the outside of the main body case 11 through the exhaust part 19 and the above-described cleaning is continued.

  4B and 9 to 11 show a state in which the engaging groove 54c of the locking means 51 is engaged with the second locking convex portion 53, and the suction pipe 41 is arranged at the second position so as to produce a blower. (Blower state). In this blower state, the suction pipe 41 is supported by being inclined so that the front end thereof is lowered. At the same time, in the blower state, the entire vacuum cleaner 1 is lifted so that the suction port body 5 does not come into contact with the surface to be cleaned, and the suction port body 5 is opposed to the object to be blown. 1 is used.

  The state where the suction pipe 41 is arranged from the first position to the second position, in other words, to interrupt this state from the dust suction state and switch to the blower state, the user lifts the vacuum cleaner body 2 with one hand, The suction pipe 41 arranged at the first position may be unlocked by pushing the pair of lock buttons 54 against the lock spring 55 with the fingers of the other hand. Accordingly, the suction pipe 41 is rotated downward with the rear portion as a fulcrum by using the weight of the extension pipe 4 and the suction port body 5, so that it is not necessary to manually move the suction pipe 41. It can be automatically placed in the second position.

  In this case, it is desirable to perform the unlocking operation by attaching the crotch portion between the thumb and index finger of the other hand to the front portion of the suction pipe 41 from below. By operating in this way, the extension tube 4 that rotates downward can be received by the user's hand, so that the suction port 5 may accidentally collide with the floor surface with the downward rotation. Easy to prevent.

  The rotation of the suction pipe 41 is restricted when the suction pipe 41 is disposed at the second position, and the engagement groove 54 c of the lock button 54 is thereby opposed to the second lock convex portion 53. Therefore, when the push of the lock button 54 is released in this state, the lock button 54 is pushed back by the lock spring 55, and the engagement groove 54c is engaged with the second lock convex portion 53 accordingly, and the suction pipe 41 is locked in the second position. The downward rotation angle of the suction pipe 41 from the first position to the second position described above is as small as approximately 45 degrees.

  In the blower state in which the suction pipe 41 is disposed at the second position, the first ventilation portion 44 is disengaged above the inlet receiving portion 18 and closed by the downward convex portion 11d as shown in FIG. At the same time, the opening / closing part 46 closes the inlet 32 a of the dust collection case 31, so that the communication between the dust collection case 31 and the suction pipe 41 is blocked. In addition, the exhaust switching member 35 is moved with the pivot portion 35a as a fulcrum as the suction pipe 41 rotates downward, away from the stopper portion 24a, and overlaps the side surface of the partition wall 11b to the second exhaust position where the ventilation groove 36 is closed. It is in a state of being placed.

  Further, since the suction pipe 41 is arranged at the second position, the second ventilation part 45 is arranged behind the ventilation chamber 22 and communicates with the space S2 between the exhaust switching member 35 and the stopper part 24a. It is in the state that was done. The space S2 communicates with the exhaust side of the electric blower 28 via the stopper portion 24a and the bearing boss 26.

  In the blower state where the suction pipe 41 is disposed at the second position, the outside air introduction air passage 48 functions as an air passage. That is, the air passage inlet 48 a of the outside air introduction air passage 48 communicates with the outside of the main body case 11 through the front end opening 17 a (see FIGS. 9 and 10) of the suction pipe support chamber 17 that is opened as the suction pipe 41 rotates downward. In addition, the air passage outlet 48b of the outside air introduction air passage 48 is shifted to the rear side of the air passage closing portion 17b so as to face the inlet portion 22a of the air passage chamber 22 and communicate with the air passage chamber 22. is there.

  The exhaust path in the blower state is as follows. Air (exhaust gas) discharged from the electric blower 28 flows out into the space S2. In this case, since the ventilation groove 36 is closed, the exhaust does not flow into the dust collecting portion storage chamber 16. The air in the space S <b> 2 (exhaust from the electric blower 28) is guided by the exhaust switching member 35 in the second exhaust position, and flows into the suction pipe 41 through the second ventilation portion 45. The inflowing air passes through the suction pipe 41 and the extension pipe 4 by closing the first ventilation part 44 and preventing the air from entering the dust collecting case 31 by the opening / closing part 46. It is ejected downward from the suction port body 5. The air that blows out can be used to blow dust that accumulates in the corners of the room or in the rails of aluminum sashes.

  Intake into the electric blower 28 in the blower state is performed as follows. As described above, the air passage inlet 48 a of the outside air introduction air passage 48 is communicated with the outside of the main body case 11 through the suction pipe support chamber 17, and the air passage outlet 48 b of the outside air introduction air passage 48 is connected to the ventilation chamber 22. It is communicated. Therefore, air outside the main body case 11 passes through the outside air introduction air passage 48, is sucked into the ventilation chamber 22 from the air passage outlet 48 b, and is further sucked into the electric blower 28 through the guard plate 23. Therefore, the above-described blower is continued.

  In this case, since the outside air sucked into the electric blower 28 does not pass through the dust collecting case 31 that is a dust collecting portion, the air volume of the blower is kept constant without being affected by the amount of dust accumulated in the dust collecting case 31. Maintained. In this blower state, as described above, the opening / closing portion 46 closes the inlet 32a of the dust collection case 31, so that dust accumulated in the dust collection case 31 is brought out of the dust collection case 31 by the exhaust air. Leakage is prevented.

  In order to switch the suction pipe 41 from the second position to the first position in order to switch from the blower state to the dust suction state, the lock of the suction pipe 41 by the locking means 51 is released by the procedure described above. In this state, the vacuum cleaner main body 2 is appropriately brought close to the floor surface, and the suction port body 5 of the suction air passage member 3 may be pressed against the floor surface.

  Accordingly, as the suction air passage member 3 is relatively pushed up, the suction pipe 41 is rotated upward with its rear portion as a fulcrum without requiring the manual operation of holding the suction pipe 41. , Moved from the second position to the first position. In conjunction with the movement of the suction pipe 41, the exhaust air path changing member 35 is disposed at the first exhaust position, and the state shown in FIG. Accordingly, the dust blown from the corner of the room by the blower can be sucked and cleaned. The upward rotation angle of the suction pipe 41 from the second position to the first position described above is also as small as about 45 degrees.

  As described above, in the state where the vacuum cleaner 1 blows, the air volume of the blower can be kept constant without being affected by the amount of dust accumulated in the dust collecting case 31. Further, in the vacuum cleaner 1 described above, the suction pipe 41 to which the extension pipe 4 is connected is rotatable in the vertical direction, and the weight of the extension pipe 4 is used when changing from the dust suction state to the blower state. The suction pipe 41 can be disposed at the second position for the blower, and when the blower state is changed to the dust suction state, the suction pipe body 5 is pressed against the floor surface (surface to be cleaned) by utilizing the suction port body 5 being pressed. In the first position. In addition, the exhaust switching member 35 is interlocked with the rotation of the suction pipe 41 to switch the direction in which the exhaust of the electric blower 28 flows out, and the external air introduction means 38 of the electric blower 28 is rotated by the rotation of the suction pipe 41. Outside air is introduced into the upstream side and stopped. Therefore, since the dust suction and the blower can be switched by only one behavior of rotating the suction pipe 41 in the vertical direction, the operation is easy and the usability is good.

  Since the suction pipe 41 is used as a support member for the suction pipe 41 with the main body case 11 in which the electric blower 28 is built in, the suction pipe 41 is attached to the main body case 11, so that the exhaust of the electric blower 28 is guided to the spaces S1 and S2. Therefore, it is possible to complete the control of the flow of the intake air and the exhaust gas in the main body case 11 without the need for an exhaust introduction pipe.

  In the embodiment, the main body case 11 in which the electric blower 28 is built and the support member to which the suction pipe 41 is attached may be different. In other words, when the present invention is applied to an upright type vacuum cleaner, it supports the hand operating part provided at the tip of the dust suction hose connected to the main body case of the vacuum cleaner body and connected to the extension pipe. It can be used as a member. In such an application, in addition to the dust suction hose extending between the hand operating section (support member) and the main body case of the cleaner body, an exhaust introduction pipe for guiding the exhaust of the electric blower built in the main body case of the cleaner body into the support member. It may be provided and implemented. Also, in this implementation, it is preferable that the exhaust of the electric blower passes through the exhaust introduction pipe only when blowering is performed, and further, a filtration type main body dust collecting part is provided in the main body case of the vacuum cleaner main body. Is preferred.

  Moreover, the vacuum cleaner 1 having the above-described configuration uses the vertical movement of the extension pipe 4 as described above, and the exhaust switching member 35 is interlocked with the extension pipe 4 so that the extension pipe 4 is in the first position. The exhaust switching member 35 can be disposed at the first exhaust position in the disposed state, and the exhaust switching member 35 can be disposed at the second exhaust position with the extension pipe 4 disposed at the second position. Therefore, it is not necessary to manually operate the exhaust gas switching member 35 for controlling the flow of intake air and exhaust gas in the main body case 11 in which the extension pipe 4 is attached so as to be rotatable in the vertical direction. In this respect, usability can be improved.

  In the embodiment, the suction pipe 41 is locked at the second position by the locking means 51. However, the second locking convex portion 53 of the locking means 51 may be omitted. Even in this case, when the suction pipe 41 rotates to reach the second position, the suction pipe 41 hits the edge of the front end opening 17a of the suction pipe support chamber 17 at that time, so that the rotation of the suction pipe 41 is stopped. Thus, the suction pipe 41 can be held in the second position. In addition, since the suction pipe 41 is not locked in the second position, it is not necessary to release the lock when pressing the suction port body 5 against the floor surface (surface to be cleaned). It can be rotated to a position to shift to dust absorption.

  Moreover, in the said one Embodiment, although the dust collection case was used as a dust collection part, it can replace with this and a dust collection bag is employable. In the embodiment, the locking means 51 is provided on both the left and right sides of the main body case 11, but it can be provided only on one of the left and right sides instead.

  Next, another embodiment of the present invention will be described with reference to FIGS. This embodiment shows an example in which the present invention is applied to a canister-type vacuum cleaner 101.

  The electric vacuum cleaner 101 includes a vacuum cleaner main body 102 and a suction air passage member. The cleaner body 102 has wheels (not shown) and can move on the floor surface of the room, which is the surface to be cleaned. For example, a front wall of the main body case 111 of the vacuum cleaner main body 102 is provided with a suction port 131b that forms an inlet of a dust collecting unit 131 described later.

  The suction air passage member includes a dust suction hose, an extension pipe, and a floor suction port body connected in communication with each other. The dust suction hose has a main body connecting pipe 104 at one end portion, and the other end portion (tip portion) (not shown) of the dust suction hose has a handle portion provided with a hand operating portion. The extension pipe and the suction port not shown are the same as those described in the embodiment. The rear end portion of the extension pipe is detachably fitted to and connected to the other end portion of the dust suction hose. The main body connection pipe 104 is inserted into the suction port 131b and is detachably connected to the main body case 111, or is inserted into a blower hole 161 described later and is detachably connected to the main body case 111. The main body connection tube 104 is manually attached and detached.

  The inside of the main body case 111 is partitioned by a front partition 111a and a rear partition 111b located rearward of the main body case 111 into a dust collecting portion 131, a ventilation chamber 122, and a blower storage chamber 121 arranged in the front-rear direction. The dust collecting part 131 is provided to occupy the front part of the main body case 111, the blower storage chamber 121 is provided to occupy the rear part of the main body case 111, and the ventilation chamber 122 is an intermediate part of the main body case 111, that is, a dust collecting part. It occupies between 131 and the ventilation chamber 122.

  The dust collection unit 131 is formed to include a dust collection chamber 131a and a filter 147 attached to the front partition 111a. A suction port 131b faces the dust collection chamber 131a. The filter 147 for filtering the dust-containing airflow faces the dust collection chamber 131a, and the dust collection chamber 131a and the ventilation chamber 122 are communicated with each other through the filter 147.

  The main body case 111 is provided with an intake air switching member, for example, a dust collector opening / closing member 141 movably. The dust collector opening / closing member 141 includes a valve that opens and closes the suction port 131b when the main body connection pipe 104 is inserted into and removed from the suction port 131b that forms the inlet of the dust collection unit 131, for example. As shown in FIG. 17, the dust collector opening / closing member 141 is pushed open by the main body connection pipe 104 inserted into the suction port 131b, and the main body connection pipe 104 is pulled out from the suction port 131b, so that its own weight or spring As shown in FIG. 18, the suction port 131b is closed by force.

  In a state where the dust collector opening / closing member 141 opens the suction port 131b, the dust collector opening / closing member 141 is disposed at the first position. In this state, the dust-containing airflow is introduced into the dust collection chamber 131a through the main body connecting pipe 104, so that dust collection is possible. In a state where the dust collection unit opening / closing member 141 closes the suction port 131b, the dust collection unit opening / closing member 141 is disposed at the second position. In this state, dust collection is interrupted.

  The ventilation chamber 122 is provided continuously downstream of the dust collection portion 131. Outside air introduction means 138 is provided in the main body case 111. The outside air introduction means 138 has an outside air introduction hole 148 and a ventilation chamber opening / closing member 149.

  The outside air introduction hole 148 is provided in the main body case 111 so that the ventilation chamber 122 communicates with the outside of the main body case 111. The ventilation chamber opening / closing member 149 includes a valve that opens and closes the outside air introduction hole 148, and is provided to be slidable in the front-rear direction along the inner surface of the main body case 111, for example. The ventilation chamber opening / closing member 149 and the dust collecting portion opening / closing member 141 are interlocked. That is, as shown in FIG. 17, as the dust collector opening / closing member 141 opens the suction port 131b, the vent chamber opening / closing member 149 closes the outside air introduction hole 148, and as shown in FIG. 18, the dust collector opening / closing member 141 The ventilation chamber opening / closing member 149 opens the outside air introduction hole 148 as the suction port 131b is closed. In the present embodiment, the vent chamber opening / closing member 149 also serves as, for example, an exhaust switching member, and the number of opening / closing members is reduced. The exhaust switching member for opening and closing the exhaust part 119 can be provided separately.

  The blower storage chamber 121 is provided continuously downstream of the ventilation chamber 122. An electric blower 128 is stored in the blower storage chamber 121. The front end portion of the fan portion 128 b of the electric blower 128 is inserted into the ventilation chamber 122, for example, so that the electric blower 128 can be sucked in the air in the ventilation chamber 122.

  An exhaust part 119 and a blower hole 161 are provided at the rear part of the main body case 111 so as to face the blower storage chamber 121. The exhaust part 119 is arranged behind the outside air introduction hole 148 and is provided in a moving region of the vent chamber opening / closing member 149. The exhaust part 119 is opened as shown in FIG. 17 with the vent chamber opening / closing member 149 closing the outside air introduction hole 148, and the exhaust portion 119 is shown in FIG. 18 with the outside chamber introduction member 149 opening the outside air introduction hole 148. It is provided to be closed as shown.

  The vent chamber opening / closing member 149 that also serves as an exhaust switching member opens the exhaust portion 119, and the vent chamber opening / closing member 149 is disposed at the first exhaust position. In this state, the exhaust from the electric blower 128 can be exhausted to the outside of the main body case 111 through the exhaust part 119. With the vent chamber opening / closing member 149 closing the exhaust portion 119, the vent chamber opening / closing member 149 is disposed at the second exhaust position. In this state, the exhaust from the electric blower 128 can be discharged out of the main body case 111 through the blower hole 161 without passing through the exhaust part 119.

  The blower hole 161 is provided at a position different from the exhaust part 119. The main body connecting pipe 104 removed from the suction port 131b is inserted into and removed from the blower hole 161.

  A hole opening / closing member 162 is provided in the main body case 111. The hole opening / closing member 162 is a valve that opens and closes the blower hole 161. As shown in FIG. 17, the hole opening / closing member 162 is pushed open by the main body connecting pipe 104 inserted into the blower hole 161, and the main body connecting pipe 104 is extracted from the blower hole 161. As shown in FIG. 18, the blower hole 161 is movably provided to be closed. The blower hole 161 is held in a closed state by a hole opening / closing member 162 during cleaning by dust absorption.

  In normal cleaning with dust suction, the vacuum cleaner 101 is used by inserting and connecting the main body connecting pipe 104 of the suction air passage member to the suction port 131b. In this case, as shown in FIG. 17, the dust collector opening / closing member 141 is disposed at the first position, and the suction port 131b is opened. Further, the ventilation chamber opening / closing member 149 is disposed at the first exhaust position, the outside air introduction hole 148 is closed, and the exhaust part 119 is opened. In addition, the hole opening / closing member 162 closes the blower hole 161.

  In this state, the electric blower 128 is driven and the electric vacuum cleaner 101 is used to perform cleaning with dust absorption. In this cleaning, the dust-containing air sucked into the dust collecting portion 131 through the suction air passage member is filtered by the filter 147 of the dust collecting portion 131, whereby the dust in the dust-containing air captured by the filter 147 is removed. It is stored in the dust collection chamber 131a. On the other hand, the air passing through the filter 147 and reaching the ventilation chamber 122 is sucked into the electric blower 128 and discharged from the electric blower 128 to the blower storage chamber 121. This air is discharged to the outside of the main body case 111 through the exhaust part 119 in an open state. The flow of the airflow flowing through the cleaner body 102 described above is indicated by an arrow X in FIG.

  When the dust suction is interrupted and cleaning with a blower is performed, the following procedure is performed. First, after stopping the electric blower 128, the main body connection pipe 104 of the suction air passage member is removed from the suction port 131b, and the main body connection pipe 104 is inserted into the blower hole 161 as a blower pipe and connected to the main body case 111. To do. As a result, as shown in FIG. 18, the dust collector opening / closing member 141 is disposed at the second position and the suction port 131b is closed, and in conjunction with this, the vent chamber opening / closing member 149 is moved from the first exhaust position to the second exhaust. Moved to position. Therefore, the exhaust part 119 is closed at the same time as the outside air introduction hole 148 is opened.

  By driving the electric blower 128 in this state, outside air is sucked into the ventilation chamber 122 through the outside air introduction hole 148 provided separately from the suction port 131b, and further sucked into the electric blower 128. That is, outside air is sucked into the electric blower 128 without passing through the dust collection unit 131. Then, the electric blower 128 is discharged into the blower storage chamber 121. The air in the blower storage chamber 121 is guided from the short connection pipe 104 inserted into the blower hole 161 by a suction air passage member having this pipe, and is blown out from the suction opening of the suction port body possessed by this member. It is. Therefore, cleaning by a blower can be performed by lifting the suction port body and making the suction opening face an object to be blowered. The flow of the airflow flowing through the cleaner body 102 described above is indicated by an arrow Y in FIG.

  As described above, in the state in which the electric vacuum cleaner 101 is used to blow, the air volume of the blower can be kept constant because it is not affected by the amount of dust accumulated in the dust collecting unit 131.

  In the embodiment shown in FIGS. 17 and 18, the opening / closing operation of the ventilation chamber opening / closing member 149 is linked to the opening / closing operation of the dust collecting portion opening / closing member 141, and the ventilation chamber opening / closing member 149 has the outside air introduction hole 148 and the exhaust portion. The blower hole 161 is held closed by the hole opening / closing member 162 unless the main body connecting pipe 104 is connected thereto. Therefore, it is possible to perform cleaning by dust absorption by inserting and connecting the main body connecting pipe 104 to the suction port 131b without manually opening and closing each opening / closing member, and the main body connecting pipe 104 is installed in the blower hole 161. It is possible to perform cleaning with a blower by inserting and connecting, and therefore, it is easy to use.

  In the embodiment shown in FIGS. 17 and 18, when the vent chamber opening / closing member 149 is configured to open and close only the outside air introduction hole 148, the exhaust portion 119 can be formed so that the main body connecting pipe 104 can be inserted and removed. Accordingly, the configuration can be simplified by omitting the blower hole 161 and the hole opening / closing member 162.

  Further, in the embodiment shown in FIGS. 17 and 18, the dust collecting portion opening / closing member 141 that opens and closes the suction port 131 b, the ventilation chamber opening and closing member 149 that opens and closes the outside air introduction hole 148, and the exhaust gas switching member that opens and closes the exhaust portion 119 are provided. These open / close members can be individually opened and closed manually, or each open / close member is formed by an electromagnetic valve, and the open / close members can be operated by a hand operating unit. It is also possible to adopt a configuration in which remote operation is performed by operating the buttons.

  In the embodiment shown in FIGS. 17 and 18, the hole opening / closing member 162 is omitted and the blower hole 161 is always opened so that a part of the exhaust gas flows out from the blower hole 161 when dust is sucked. You can also. The tube member attached to and detached from the blower hole 161 can be a blower tube dedicated to the blower instead of the main body connection tube 104.

  DESCRIPTION OF SYMBOLS 1,101 ... Electric vacuum cleaner, 2,102 ... Vacuum cleaner main body, 4 ... Extension pipe, 5 ... Suction port, 11, 111 ... Main body case, 17b ... Air channel closing part (outside air introduction means), 19, 119 ... Exhaust unit, 21, 121 ... Blower storage chamber, 21, 122 ... Ventilation chamber, 22a ... Entrance of ventilation chamber, 28, 228 ... Electric blower, 31 ... Dust collection case (dust collection unit), 131 ... Dust collection unit, 131a ... Dust collection chamber, 131b ... Suction port (inlet of dust collection part), 35 ... Exhaust switching member, 38, 138 ... Outside air introduction means, 41 ... Suction pipe (intake switching member), 141 ... (also serves as intake switching member) Dust collector opening / closing member 44... First ventilation portion 45... Second ventilation portion 46. Opening and closing portion 47 .. net filter (filter) 147 ... filter 48 .. outside air introduction air passage (outside air introduction means) 48a ... Airway entrance, 48b ... Airway exit, 148 ... Outside air introduction hole (outside air introduction means), 149 ... Ventilation chamber opening / closing member (exhaust gas switching member; outside air introduction means), 161 ... Blower hole, 162 ... Hole opening / closing member

Claims (3)

A ventilation chamber into which outside air can be introduced, a blower storage chamber provided on the downstream side of the ventilation chamber in communication with the ventilation chamber, and a main body case having an exhaust section capable of communicating with the storage chamber;
An electric blower that is stored in the blower storage chamber and sucks air in the ventilation chamber;
A dust collecting part for collecting dust in the dust-containing air provided in the main body case and sucked in by the operation of the electric blower;
The main body case is movable to a first position where dust collected by the operation of the electric blower during dust collection is collected by the dust collection portion and a second position where the dust collection is interrupted when blowing. An intake switching member provided;
A first exhaust position for exhausting the exhaust from the electric blower to the outside of the main body case through the exhaust portion when dust is absorbed, and exhausting the exhaust from the electric blower to the outside of the main body case as a blower when blowing An exhaust switching member provided in the main body case so as to be movable over the second exhaust position.
Outside air introduction means for cutting off the introduction of outside air to the ventilation chamber during dust suction and for introducing outside air to the ventilation chamber without passing through the dust collecting portion when blowing.
The vacuum cleaner characterized by comprising. The suction switching member is a suction pipe rotatably attached to the main body case in a state inserted into the main body case, and the suction pipe is in a state where the suction pipe is disposed at the first position. A first ventilation part that communicates with the inlet of the dust collecting part and is in communication with the inlet in a state where the suction pipe is disposed at the second position, and is branched from the first ventilation part and A second ventilation part communicating with the ventilation chamber in a state where the suction pipe is disposed at the first position and communicating with the exhaust side of the electric blower while the suction pipe is disposed at the second position; The inlet is opened between the first and second ventilation portions and the suction pipe is disposed at the first position, and the inlet is opened with the suction pipe disposed at the second position. A closing opening and closing portion and the second passage Has a net filter provided to partition the two vent passages in the bifurcation of the road,
The exhaust switching member is pivotable, and a free end of the exhaust switching member and a rear portion of the suction pipe are engaged so that the exhaust switching member is interlocked with the pivot of the suction pipe.
The outside air introduction means includes an outside air introduction air passage formed in the suction pipe independently of the first and second air passages, and an air passage inlet or an air passage outlet of the outside air introduction air passage. The air pipe closing portion provided in the main body case is formed so that the pipe is closed in a state where the pipe is arranged at the first position and the suction pipe is opened in a state where the pipe is arranged in the second position. The electric vacuum cleaner according to claim 1, wherein   The dust collection unit includes a filter, the ventilation chamber is provided continuously downstream from the dust collection unit, and the intake air switching member is a dust collection unit opening and closing member that opens and closes the inlet of the dust collection unit. In addition, the outside air introduction means includes an outside air introduction hole capable of communicating the ventilation chamber and the outside of the main body case, and a ventilation chamber opening / closing member that opens and closes the introduction hole, and the dust collecting portion As the opening / closing member opens the inlet of the dust collecting portion, the vent chamber opening / closing member closes the outside air introduction hole, and as the dust collecting portion opening / closing member closes the inlet, the ventilation chamber opening / closing member introduces the outside air. The vacuum cleaner according to claim 1, wherein the opening and closing members are interlocked so as to open a hole.

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