JP2010268960A - Electric cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric cleaner which is easy to switch between dust suction and a blower, and has good handleability. <P>SOLUTION: An electric blower and a dust collection case are provided in a body case 11 having an exhaust part 19. A suction tube 41 to which an extension pipe is connected detachably from the front side is included and has an outside air introducing path for the blower at the rear part thereof. By pressing a suction port body to a surface to be cleaned, the suction tube 41 is disposed at a first position for sucking dust. In order that the suction tube 41 is disposed at a second position for the blower with the weight of the extension pipe, the suction tube 41 is disposed so as to be vertically rotatable with the rear part in the center. While the suction tube 41 is disposed at the first position, dust sucked from the suction port body is introduced to the dust collection case and the exhaust of the electric blower is exhausted to outside of the body case 11 through the exhaust part 19. While the suction tube 41 is disposed at the second position, air sucked from the outside air introducing path and discharged from the electric blower passes through the suction tube 41 and the extension pipe to be jetted outside. <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 that communicates with the dust collection chamber and houses the motor fan. The cover that covers the main body is provided with an air intake and an exhaust port, and the hose is connected to the air intake or exhaust port. BACKGROUND ART A vacuum cleaner provided with a hose connection portion that selectively communicates with either one of mouths is known as a conventional technique (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. For this reason, when the lid is manually rotated and the hose communicates with the intake port, dust is sucked through the hose, and when the hose communicates with the exhaust port, the exhaust from the motor fan is ejected from the hose. Can be used as a blower.

  In addition to this, in Patent Document 1, the upper surface of the main body and the lid is formed in an arc shape, and a hose connection portion is attached to the bearing portion provided on the main body so as to be pivotable in the front-rear direction. An electric vacuum cleaner is also described in which a hose can be selectively communicated with an intake port or an exhaust port by sliding the tube in the front-rear direction along the upper surface of the main body to select dust suction or a blower.

JP-A-6-304104 (paragraphs 0006-0010, FIGS. 1 to 5)

  In the prior art, when switching between dust suction and blower, manually operate the hose connection part to which the hose is fixed, and place the hose connection part at the position where the hose communicates with the dust suction port or the hose communicates with the exhaust port. Since it must be arranged, there is a problem that it is inconvenient in operation.

  In order to solve the above problems, the present invention provides an electric blower and a dust collecting part in a main body case having an exhaust part, an extension pipe is detachably connected from the front side, and has a blower outside air introduction air passage at the rear part. The suction pipe thus arranged is arranged on the upstream side of the electric blower. Then, the suction port is pressed against the surface to be cleaned so that the suction pipe is arranged at the first position for dust absorption, and the suction pipe is arranged at the second position for blower by the weight of the extension pipe. The suction pipe is disposed so as to be rotatable in the vertical direction around the rear part. Thereby, with the suction pipe arranged at the first position, the dust sucked from the suction port body is introduced into the dust collecting section, and the exhaust of the electric blower is discharged out of the main body case through the exhaust section, or In the state where the suction pipe is arranged at the second position, the air sucked from the outside air introduction air passage and discharged from the electric blower is ejected through the suction pipe and the extension pipe.

  According to the present invention, the suction pipe to which the extension pipe is connected is rotatable in the vertical direction, and when the dust suction state is changed to the blower state, the suction pipe is used for the blower by utilizing the weight of the extension pipe. Can be placed in two positions, and when changing from the blower state to the dust suction state, the suction pipe can be placed at the first position for dust suction utilizing the fact that the suction port is pressed against the surface to be cleaned, so switching between dust suction and blower It is easy to operate and easy to use.

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.

  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 cleaner 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 air path switching member 35, a suction pipe 41, And locking 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 air path switching member 35 is formed by providing a pivot portion 35a at one end of a flat plate. The exhaust air path 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 thereof to the bearing boss 26 of the case member 12, respectively. .

  The exhaust air path switching member 35 can move between the first exhaust position and the second exhaust position. FIGS. 6, 7, and 13 show a state where the exhaust air path switching member 35 is rotated and disposed at the first exhaust position. In this state, the exhaust air passage switching member 35 is positioned on 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 air path 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 air path switching member 35 is rotated and disposed at the second exhaust position. In this state, the exhaust air path 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 air path switching member 35 is disposed at the second exhaust position, the ventilation groove (vent hole) 36 is closed by the exhaust air path 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 air passage 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 a 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 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. For convenience of explanation in FIGS. 7 and 10, the lower end of the second ventilation portion 45 drawn by a thick line also slightly penetrates 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 divides the first ventilation part 44 and the second ventilation part 45 and is provided at a branch point between 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 inserted into and received by the inlet receiving part 18 in a state where the suction pipe 41 is disposed at a first position described later. Further, it is inclined so as to gradually become higher as it approaches the inlet 32a of the dust collecting case 31, and continues to the inlet receiving portion 18 and the lower ends of the inlet 32a.

  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 FIGS. 5 and 6, 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 air path switching member 35 are interlocked. For this purpose, an engaging portion 41a is formed at the rear end portion of the suction pipe 41, and the free end of the exhaust air passage switching member 35 is engaged with the engaging portion 41a. As the suction pipe 41 at the first position is rotated to the second position, the engaging portion 41a is displaced upward, so that the exhaust air path switching member 35 is rotated to the second exhaust position, and vice versa. As the suction pipe 41 at the second position is rotated to the first position, the engaging portion 41a is displaced downward, whereby the exhaust air path 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 continuously communicated with the inlet 32a of the dust collecting case 31 from the front side thereof, and the opening / closing portion 46 is detached below the inlet 32a of the dust collecting case 31, so that the inlet 32a is The second ventilation part 45 is in an open state and 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 air path switching member 35 is positioned in 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 disposed in the first position. is there.

  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 at 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, since the air in the blower storage chamber 21 is discharged to the outside of the main body case 11 through the exhaust part 19, 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 faces the target to be blown to A vacuum cleaner 1 is used.

  In order to switch the suction pipe 41 from the first position to the second position, in other words, from the dust-absorbing state to the blower state, the user lifts the vacuum cleaner main body 2 with one hand and moves it with the finger of the other hand. By pushing the pair of lock buttons 54 against the lock spring 55, the suction pipe 41 disposed at the first position may be unlocked. 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. Moreover, the exhaust air path switching member 35 is moved with the pivot portion 35a as a fulcrum according to the downward rotation of the suction pipe 41, leaves the stopper portion 24a, overlaps the side surface of the partition wall 11b, and closes the ventilation groove 36. It is in a state of being placed at a position.

  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 the space S2 between the exhaust air passage switching member 35 and the stopper part 24a is arranged. Is in communication with 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 and communicated with the ventilation chamber 22.

  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 air path 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 the blower state, as described above, the opening / closing portion 46 blocks the inlet 32a of the dust collecting case 31, so that dust accumulated in the dust collecting case 31 leaks out of the dust collecting case 31 by the exhaust air. Exiting 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 vacuum cleaner 1, 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 port body 5 is pressed against the floor surface (surface to be cleaned) and the suction pipe 41 is sucked into the dust. Therefore, the operation for switching between the dust suction and the blower is easy and easy to use.

  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 present invention, the main body case 11 in which the electric blower 28 is incorporated may be different from the support member to which the suction pipe 41 is attached. 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.

  Further, as described above, the vacuum cleaner 1 having the above-described configuration utilizes the vertical movement of the extension pipe 4 and the exhaust air path switching member 35 is interlocked with the extension pipe 4 so that the extension pipe 4 is the first. The exhaust air path switching member 35 is disposed at the first exhaust position with the exhaust pipe switching member 35 disposed at the second exhaust position while the extension pipe 4 is disposed at the second position. be able to. Therefore, it is not necessary to manually operate the exhaust air passage switching member 35 that controls the flow of intake air and exhaust gas in the main body case 11 in which the extension pipe 4 is rotatably attached. 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.

  DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner, 2 ... Vacuum cleaner main body, 4 ... Extension pipe, 5 ... Suction port body, 11 ... Main body case, 19 ... Exhaust part, 28 ... Electric blower, 31 ... Dust collection case (dust collection part), 32a DESCRIPTION OF SYMBOLS ... Dust collection case (dust collection part) inlet, 35 ... Exhaust air passage switching member, 41 ... Suction pipe, 44 ... First ventilation part, 45 ... Second ventilation part, 46 ... Opening / closing part, 47 ... Net filter 48 ... Outside air introduction air passage, 51 ... Locking means, 54 ... Lock button

Claims (7)

A main body case having a built-in electric blower and an exhaust part through which air discharged from the electric blower passes,
A dust collecting portion detachably provided on the main body case;
An extension pipe with a suction port connected to the front end;
The extension pipe is detachably connected from the front side and has an air introduction air passage for blower at the rear, and the first position for dust suction and the blower at the upstream side of the electric blower centering on the rear. It is arranged so as to be able to rotate in the vertical direction over the second position, and when the suction port body is pressed against the surface to be cleaned, it is rotated upward to be arranged at the first position, and the weight of the extension pipe And a suction pipe which is pivoted downward at the second position,
Comprising
In the state where the suction pipe is disposed at the first position, dust in the dust-containing air sucked from the suction port body is introduced into the dust collecting portion, and air discharged from the electric blower is Air that is discharged to the outside of the main body case through the section and the suction pipe is disposed at the second position, and the air sucked into the electric blower from the outside air introduction air passage passes through the suction pipe and the extension pipe. A vacuum cleaner characterized by being ejected through.   The vacuum cleaner according to claim 1, wherein the suction pipe is attached to the main body case. The rear part of the suction pipe communicates with the inlet of the dust collecting part in a state where the suction pipe is arranged at the first position and is not communicated with the inlet in a state where the suction pipe is arranged at the second position. The first ventilation part, and the suction pipe is branched from the first ventilation part and communicated with the suction side of the electric blower in a state where the suction pipe is arranged at the first position. A second ventilation portion communicating with the exhaust side of the electric blower in a state of being disposed at a position, and a state in which the suction pipe is disposed between the first and second ventilation portions and disposed at the first position An opening / closing portion that closes the inlet in a state where the inlet is opened and the suction pipe is disposed at the second position, and a net filter that partitions both the air passages at a branch point of the second air passage Have
The flow path from the electric blower to the exhaust port is opened with the suction pipe disposed at the first position, the flow path is closed with the suction pipe disposed at the second position, and the electric drive is performed. The vacuum cleaner according to claim 1 or 2, wherein an exhaust switching member that guides the air discharged from the blower to the second ventilation portion is attached to the main body case.   The suction pipe is pivotally attached to the main body case with its rear portion inserted into the main body case, and the exhaust gas switching member is pivotable in the vertical direction. 4. The vacuum cleaner according to claim 3, wherein a free end portion of the exhaust gas switching member and a rear portion of the suction pipe are engaged with each other so as to interlock with the rotation of the pipe.   5. The vacuum cleaner according to claim 1, further comprising a lock unit that holds the suction pipe in the first position.   The front part of the main body case is formed to a thickness that allows the user's thumb and other fingers to be sandwiched from the front side of the main body case, and the locking means is provided on both side surfaces of the front part of the main body case. 6. The electric vacuum cleaner according to claim 5, wherein the lock button is provided so as to be able to be pushed in to release the lock.   The net filter and an upper surface of the opening / closing portion are inclined so as to become higher toward the inlet in a state where the suction pipe is disposed at the first position. The vacuum cleaner as described in any one of the above.

Images