JP5025243B2 - Upright vacuum cleaner - Google Patents

Description

  The present invention relates to a so-called upright type (upright type) upright type vacuum cleaner in which a suction port body is attached to a lower portion of a vacuum cleaner body in which an electric blower is built.

  2. Description of the Related Art Conventionally, a so-called upright type vacuum cleaner in which a suction port body is attached to a lower portion of a vacuum cleaner body in which an electric blower is built is known.

And in such an upright type vacuum cleaner, in the middle of the dust suction path connecting the suction port body and the dust collecting portion provided upstream of the electric blower, an extension tube that can be detached from the vacuum cleaner body is provided, In addition to sucking dust from the suction port at the bottom of the vacuum cleaner body, remove the extension pipe from the vacuum cleaner body and connect various attachments to the tip of the extension pipe to prevent dust from being sucked by the suction mouth body. The thing which enabled it to perform the dust absorption of a part and a clearance gap part is known (refer patent document 1).
Japanese Patent Laid-Open No. 2005-185584

  In the upright type vacuum cleaner described above, the extension pipe is always interposed between the suction port and the dust collection chamber, and the pipe length is long, so the pipe resistance is large and the dust suction performance is adversely affected. give.

  Therefore, the inventors of the present application, as shown in FIG. 8, extend the dust suction path 02 connected to the dust collecting portion 01 and the first branch path 04 extending downward toward the suction port body 03 in the middle of the dust suction path 02. It was newly proposed to branch to the second branch path 06 extending upward toward the pipe 05 and shorten the pipe length between the dust collecting part 01 and the suction port body 03.

  However, in the above-described technique, as shown in the figure, when the first branch path 04 and the second branch path 06 are arranged in a straight line, after the dust suction is performed on the extension pipe 05 side, the dust suction is terminated and the electric motor is driven. A new solution that when the blower 07 is stopped, dust remaining on the second branch path 06 side may fall to the suction port body 03 side through the first branch path 04 and leak to the outside. I found a problem to be done.

  The present invention prevents the dust sucked from the extension pipe side from falling to the suction port side and leaking outside in the upright type vacuum cleaner having the dust suction path branched to the extension pipe side as described above. The goal is to achieve this at low cost.

In order to achieve the above-described object, the present invention provides an electric blower and a vacuum cleaner body including a dust collecting portion that collects dust on the upstream side of the electric blower, and an end portion on the downstream side of the suction in the dust collecting portion. A first branch path connected to a suction port attached to a lower portion of the cleaner body, and having a portion extending downward toward a lower portion of the cleaner body, and connected to the suction port body; and the suction port An upright type comprising a dust suction passage branched to a second branch passage connected to a suction air passage body different from the body, and capable of selectively sucking from the suction opening body and the suction air passage body A vacuum cleaner,
In a state where the vacuum cleaner body is erected, the lower base end portion of the first branch passage extending downward and the branch base end portion of the second branch passage are shifted so as not to overlap in the vertical direction under isosamples toward the dust collecting unit together with, when said dust from the second branch path side is dropped Ri located near high the lower base end than the portion for receiving the dust, from the lower base end portion for An upright vacuum cleaner characterized by

  Furthermore, the invention according to claim 2 is the upright type electric vacuum cleaner according to claim 1, wherein the branch base end portion of the second branch path is a lower base of the first branch path in the dust suction path. It was set as the upright type vacuum cleaner characterized by being arrange | positioned in the suction downstream rather than the edge part.

  The invention according to claim 3 is the upright type electric vacuum cleaner according to claim 2, wherein the dust suction path extends in a lateral direction from the dust collecting portion, and a tip thereof is the first branch path. The horizontal direction part is provided in communication, and the horizontal direction part is arranged in the horizontal direction in a state where the vacuum cleaner main body is erected, or arranged so that the lower base end part is higher than the dust dropping part. An upright vacuum cleaner characterized by

  According to the present invention, when the dust remaining on the extension pipe side falls to the second branch path when the dust suction from the extension pipe is stopped, the lower base end portion of the portion extending downward of the first branch path is provided. Since the branch base end of the second branch path is arranged so as not to overlap in the vertical direction, it is prevented from falling straight down to the suction port body side to prevent leakage from the suction port body to the outside. Can do.

  In addition, in order to prevent the dust from leaking to the outside as described above, the lower base end portion of the first branch passage extending downward and the branch base end portion of the second branch passage are simply moved vertically. Since they are simply arranged so as not to overlap, the above-described effects can be obtained at a lower cost compared to adding a valve structure or the like for preventing dust from falling.

  In the second aspect of the present invention, the dust that has fallen into the second branch path remains at a position downstream of the first branch path.

  Therefore, this dust is collected in the dust collecting portion when the upright type vacuum cleaner is operated next, regardless of whether the dust suction is performed on the suction port side or the extension tube side.

  In this way, in the invention according to claim 2, the dust received in the middle of the lateral path is surely collected in the dust collection portion at the next use, and therefore this dust is long in the dust collection path. It is possible to prevent the leakage and the leakage to the outside more reliably.

  In the invention according to claim 3, when the vacuum cleaner main body is erected, the horizontal portion is arranged in the horizontal direction or arranged so that the lower base end portion is higher than the dust dropping portion. Therefore, the dust that has fallen from the second branch path to the lateral path passes through the lateral path by its own weight as compared to the part that communicates with the first branch pipe. It is difficult to move to the first branch road.

  Therefore, it is possible to more reliably prevent dust received in the middle of the lateral path from leaking outside through the first branch circuit due to vibration of the cleaner body.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The upright type vacuum cleaner of the present embodiment includes an electric blower (4) and a vacuum cleaner body (1) provided with a dust collecting part (5) for collecting dust upstream of the electric blower of the electric blower (4), The suction downstream end is connected to the dust collector (5), the suction upstream extends downward toward the lower part of the cleaner body (1), and the suction attached to the lower part of the cleaner body (1) Branches into a first branch path (61) connected to the mouth body (22) and a second branch path (62) connected to an extension pipe (3) removably attached to the cleaner body (1). An upright type vacuum cleaner comprising a suction port body (22) and an extension pipe (3), wherein the first branch path (61) Upright type vacuum cleaner, wherein the second branch (62) is arranged so as not to overlap in the vertical direction A.

  Based on FIGS. 1-5, the upright type vacuum cleaner A of Example 1 of the best form of this invention is demonstrated.

  FIG. 2 is a perspective view showing an appearance of the upright type vacuum cleaner A according to the first embodiment. As shown in this figure, the upright type vacuum cleaner A according to the first embodiment includes the vacuum cleaner main body 1 and the suction unit. A mouth body 2 and an extension pipe 3 as a suction air passage body are provided.

  The vacuum cleaner main body 1 is covered with a resin case 11 and is long in the vertical direction (the arrow UP indicates the upward direction and the arrow DN indicates the downward direction) as illustrated. Further, as shown in FIG. 1, an electric blower 4 is installed at the lower end portion inside the case 11, and the electric blower 4 is disposed on the upstream side of the suction path of the electric blower 4. Thus, a dust collecting unit 5 is provided for collecting dust sucked from the outside.

  The dust collecting unit 5 is provided with a dust collecting container 51, a clean filter 52, and the like. The dust collecting container 51 opens and closes a lid member 11a that forms a part of the case 11 as shown in FIG. The vacuum cleaner main body 1 can be attached and detached.

  The suction port body 2 is formed continuously with the suction base end portion 21 attached to the lower end portion of the vacuum cleaner body 1 and the suction base end portion 21 and extends in the apparatus left-right direction (arrow L and R directions) A suction tip 22 having a suction opening 22a.

  As shown in FIG. 2, a pair of rollers 21 a (only one is shown) is attached to the suction base end portion 21 along the floor surface F so as to roll.

  Further, as shown in FIG. 1, the suction base end portion 21 is connected to a suction port pipe 12 protruding downward from the cleaner body 1.

  That is, as shown in FIG. 3, an insertion tube 21 b that can be inserted into the distal end portion of the suction port tube 12 protrudes upward from the suction base end portion 21, and this insertion tube 21 b is inserted into the suction port tube 12. At the same time, it is engaged by an engagement means (not shown) and attached in a state in which the rotation around the axis of the suction pipe 12 is restricted.

  The base end portion of the insertion tube 21b is formed with a spherical joint insertion portion 21d supported by a spherical joint receiving portion 21c formed on the suction base end portion 21, and the insertion tube 21b A joint portion 21j is configured such that the joint insertion portion 21d and the joint receiving portion 21c are relatively displaced with respect to the suction base end portion 21 while rubbing the spherical surface portions with each other.

  Furthermore, a shutter 21e capable of blocking between the suction port 22a and a dust suction path 6 in the cleaner body 1 described later is integrally formed in the joint insertion portion 21d.

  Returning to FIG. 1, in the cleaner body 1, a dust collection path 6 that connects the dust collection unit 5, the suction port body 2 and the extension pipe 3 is provided.

  The suction path 6 has an end on the downstream side of the suction connected to the dust collecting part 5, and a first branch path 61 that is connected to the suction port body 2 on the upstream side of the suction, and a second branch that is connected to the extension pipe 3. It branches off to the road 62.

  The dust suction path 6 is formed by a cylindrical joint member 63, a first connection pipe 64, and a second connection pipe 65 shown in FIGS. 4 and 5.

  The joint member 63 is an integrally molded product of resin, and a horizontal pipe portion (lateral portion) 63b extending in a substantially horizontal direction with the opening end 63a connected to the dust collecting portion 5 sideways, and the horizontal At the end portion of the pipe portion 63b, an L-shaped bent portion 63c that is bent downward in a substantially L shape and has an open end (not shown) directed downward, and an open end 63a in the middle portion of the horizontal pipe portion 63b. And an upper branch portion 63d raised upward from the near side.

  Moreover, the cylindrical 1st connection pipe 64 is connected to the opening end which abbreviate | omitted illustration of the L-shaped bending part 63c, and the lower end part of this 1st connection pipe 64 is connected to the suction inlet pipe 12 ( (See FIG. 1).

  A cylindrical second connection pipe 65 is connected to an opening end (not shown) facing upward of the upper branching portion 63d.

As shown in FIG. 1, the tip of the second connection pipe 65 protrudes into a connection recess 13 that is recessed downward at the upper end of the cleaner body 1. The extension pipe 3 is connected to the extension pipe connecting portion 65a at the tip protruding in the direction.
Furthermore, in the L-shaped bent portion 63c, the first branch path 61 starts to extend downward as shown in FIGS. 4 and 5 near the boundary of the portion that is bent downward from the end of the horizontal pipe portion 63b. A lower base end 66 is formed.
Further, in the horizontal pipe portion 63b, the vicinity of the boundary between the horizontal pipe portion 63b and the upper branch portion 63 is a branch base end portion 67 where the second branch path 62 starts to branch upward as shown in FIGS. It has become.
The joint member 63, the first connecting pipe 64, and the second connecting pipe 65 described above are arranged so that the lower base end portion 66 and the branch base end portion 67 do not overlap in the vertical direction.

  The extension tube 3 includes a flexible tube 31 and an extension tube main body 32.

  The extension tube main body 32 includes a straight cylindrical straight tube portion 32a and a handle portion 32b integrally formed at the base end of the straight tube portion 32a.

  The front end of the straight pipe portion 32a is opened at the upper end of the cleaner body 1, and is formed so as to be able to be inserted in a state of fitting in the insertion hole 14 extending in the vertical direction.

  Therefore, as shown in the drawing, the extension tube 3 is integrally coupled to the cleaner body 1 with the straight tube portion 32a inserted into the insertion hole 14, and the user cleans with the handle portion 32b. The machine body 1 can be moved, and the cleaner body 1 can be swung around the joint portion 21j.

  The flexible tube 31 has an end on the downstream side of the blower fitted to the tip of the second connection pipe 65 protruding from the connection recess 13 of the cleaner body 1, and an end on the upstream side of the blower is a handle portion. 32b.

  Further, a cord reel 7 that winds up the electric cord 74 for energization of the electric blower 4 is attached to a part of the dust suction passage 6 where the second branch passage 62 is formed. As shown in FIGS. 4 and 5, the cord reel 7 includes a base plate 71 fixed to the joint member 63 and the second connection pipe 65, and a winding shaft 72 (see FIG. 1) attached to the base plate 71. A bobbin-shaped reel portion 73 that is rotatably supported at the center.

  An electric cord 74 is wound around the reel portion 73, and the electric cord drawn from the reel portion 73 is automatically wound by the operation of a winding mechanism (not shown) provided on the winding shaft 72. It is configured to be possible.

  Two bosses 71 a and 71 a are integrally formed on the base plate 71 so as to protrude in a direction parallel to the winding shaft 72.

  On the other hand, plate-like flanges 71b and 71b are formed integrally with the upper branching portion 63d and the second connecting pipe 65 so as to protrude laterally, and a plate-like receiving flange 63f is formed above the horizontal pipe portion 63b. Is erected upward.

  Then, with the substrate plate 71 in contact with the receiving flange 63f, the bosses 71a and 71a are screwed to the flanges 71b and 71b, so that the cord reel 7 is attached to the joint member 63 and the second connecting pipe 65. It is attached.

  Next, the operation of the first embodiment will be described.

  When the floor surface F is to be cleaned, the electric blower 4 is driven with the handle portion 32b and the cleaner body 1 in an inclined state tilted to the right in the drawing from the upright state shown in FIG.

  In the state where the cleaner body 1 is inclined in this way, the insertion tube 21b is inclined with respect to the suction port body 22 from the state shown in FIG. 3, and the shutter 21e is relatively moved upward with respect to the suction port body 22, The suction port 22 a communicates with the dust suction path 6.

  On the other hand, the straight tube portion 32a at the distal end of the extension tube 3 is inserted into and fitted into the insertion hole 14, and the insertion hole 14 is closed by the bottom portion 14a. It is in a possible state.

  Therefore, when the electric blower 4 is driven in this state, the floor surface F can be sucked from the suction port 22a. The dust sucked from the suction port 22 a is accumulated in the dust collecting portion 5 through the first branch passage 61 in the dust suction passage 6.

  Next, when cleaning a portion such as a corner portion, a wall, or a ceiling that cannot be sucked from the suction port 22a, first, the cleaner body 1 is set to the upright state shown in FIG. In this upright state, the shutter 21e provided in the suction port body 22 is closed as shown in FIG. 3, and the suction port 22a and the dust suction path 6 are blocked.

  On the other hand, the extension pipe main body 32 of the extension pipe 3 is extracted from the insertion hole 14 of the cleaner main body 1 so that the extension pipe 3 can absorb dust.

  When the electric blower 4 is driven in this state, dust can be sucked from the tip of the extension pipe body 32 of the extension pipe 3. In this case, the dust sucked from the extension pipe 3 passes through the second branch passage 62, that is, passes through the second connecting pipe 65, the upper branch portion 63d, and a part of the horizontal pipe portion 63b, and is collected in the dust collecting portion 5. Is done.

  When the extension pipe 3 is used, a desired attachment can be attached to the tip of the straight pipe portion 32a depending on the application.

  Next, when the suction by the extension pipe 3 is finished, as shown in FIG. 1, the straight pipe portion 32a of the extension pipe 3 is inserted into the insertion hole 14, and as described above, the handle body 32b is held with the handle portion 32b. Return 1 to a movable state.

  After the use of the extension pipe 3 is finished, on the second branch path 62 side, dust may remain in the middle of the flexible tube 31, the second connection pipe 65, and the upper branch portion 63 d of the extension pipe 3. The dust that has fallen through the branch base end portion 67 may fall into the horizontal pipe portion 63b due to vibration or gravity.

  Thus, when dust falls from the 2nd branch path 62 side, it is received by the horizontal pipe part 63b, and does not fall directly to the 1st branch path 61 side.

  As described above, in the first embodiment, it is possible to prevent the dust remaining on the second branch path 62 side from leaking outside from the suction port 22a.

  In the horizontal pipe portion 63b, the position communicated with the second branch path 62 is downstream of the position communicated with the first branch path 61. Therefore, the dust received by the horizontal pipe section 63b. After that, when the electric blower 4 is used, dust is collected in the dust collecting portion 5 even if dust is sucked from either the suction port body 2 or the extension pipe 3.

  As described above, in the upright type vacuum cleaner A according to the first embodiment, the second branch path 62 is formed in the joint member 63 whose tip is connected to the first connection pipe 64 that forms the first branch path 61. The upper branch part 63d to be formed is separated from the axis of the first branch path 61 and branched upward at a position in the middle of the horizontal pipe part 63b.

  For this reason, when dust remaining on the extension pipe 3 side falls when dust suction from the extension pipe 3 is stopped, the dust is received in the middle of the horizontal pipe portion 63b and dropped to the suction port 22 side in a straight line. Thus, leakage from the suction port 22a to the outside can be prevented.

  In addition, the prevention of such leakage of dust to the outside is simply formed so that the lower base end portion 66 and the branch base end portion 67 do not overlap in the vertical direction in the joint member 63. Compared to adding a valve structure or the like for preventing the fall, the above effect can be obtained at a low cost.

  In addition, in the first embodiment, as described above, the upper branch portion 63d forming the second branch path 62 is branched upward at a position in the middle of the horizontal pipe portion 63b. When the dust that has fallen from the received extension tube 3 side is next sucked, the dust collection portion 5 is not affected by the dust suction on either the suction port 22 side or the extension tube 3 side. Dust is collected.

  For this reason, it is more likely that this dust stays in the horizontal pipe portion 63b for a long time and moves to the first branch path 61 side due to vibration or inclination of the cleaner body 1 and leaks outside from the suction port 22a. It can be surely prevented.

  In the first embodiment, as described above, the horizontal pipe portion 63b that receives the dust falling from the extension pipe 3 side extends substantially horizontally, so that the horizontal pipe portion 63b faces the first branch path 61. Compared with the case where it is inclined downward, dust moves to the first branch 61 side due to its own weight or the vibration or inclination of the cleaner body 1 as described above, and leaks to the outside from the suction port 22a. This can be prevented more reliably.

  Furthermore, in the first embodiment, in arranging the first branch path 61 and the second branch path 62 so as not to overlap in the vertical direction in the dust suction path 6, the first connecting pipe is connected to the integrally formed joint member 63. 64 and the second connecting pipe 65 are connected.

  For this reason, it is easier to manufacture than the case where the entire dust suction path 6 is integrally formed, and even compared to connecting each of the connecting pipes 64 and 65 to a straight pipe arranged horizontally. Easy.

  As mentioned above, although embodiment and Example 1 of this invention were explained in full detail with reference to drawings, specific structure is not restricted to this Embodiment and Example 1, and does not deviate from the summary of this invention. A degree of design change is included in the present invention.

  For example, in the first embodiment, when the first branch path 61 and the second branch path 62 are arranged so as not to overlap in the vertical direction, the horizontal pipe portion 63b serving as the horizontal direction portion is arranged with respect to the dust collecting portion 5. As shown in FIGS. 6 (a) and 6 (b), the first branch path 61 is disposed on the far side and the second branch path 62 is disposed on the near side. The first branch paths 661a and 661b may be disposed on the side closer to the dust collection unit 5, while the second branch paths 662a and 662b may be disposed on the far side.

  Further, when the second branch path 62 is arranged downstream of the first branch path 61 as in the first embodiment, the second branch path 662c is located above the dust collecting portion 5 as shown in FIG. It may be made to extend straight to the first branch path 661c from the middle.

  In the first embodiment, the horizontal pipe portion 63b extending in the substantially horizontal direction is shown as the horizontal direction portion. However, the horizontal direction portion is not limited to the one extending in the horizontal direction. For example, as shown in FIG. 7 (a), the first branch path is formed by being inclined downward toward the dust collecting portion 5 as in the horizontal direction portion 663 or as in the horizontal direction portion 763 shown in FIG. 7 (b). One provided with a stepped portion 763a between the first and second members 61 may be used. That is, in the example shown in FIG. 7, when the vacuum cleaner main body 1 is erected, the dust suction path 6 is arranged so that the lower base end portion 66 is relatively higher than the dust dropping portions 664 and 764. Therefore, it is difficult for the dust falling on the dust dropping portions 664 and 764 to move in the direction of the first branch path 61 due to its own weight, vibration, or inclination, and the amount of dust leaking outside from the suction port 22a. This can be prevented even more reliably.

  Moreover, in Example 1, although the example which provided the dust collection path 6 in the inside of the cleaner body 1 was shown, it is not limited to this, For example, the 1st branch path 61 and the 2nd branch path 62 are shown. May be arranged outside the cleaner body 1.

It is sectional drawing which shows the upright type vacuum cleaner A of Example 1 of embodiment of this invention. It is a perspective view which shows the external appearance of the upright type vacuum cleaner A of Example 1 of embodiment of this invention. It is an expanded sectional view which shows the lower end part of the upright type vacuum cleaner A of Example 1 of embodiment of this invention. It is a perspective view which shows the coupling member 63, the 1st connection pipe 64, and the 2nd connection pipe 65 which form the dust suction path 6 of the upright type vacuum cleaner A of Example 1 of embodiment of this invention. It is a side view which shows the coupling member 63, the 1st connection pipe 64, and the 2nd connection pipe 65 which form the dust suction path 6 of the upright type vacuum cleaner A of Example 1 of an embodiment of the invention. (A)-(c) is the schematic explaining the outline of the principal part in the other Example of embodiment of this invention. It is the schematic explaining the outline of the principal part in the other Example of embodiment of this invention. It is the schematic which shows the technique prior to this invention.

Explanation of symbols

1 Vacuum Cleaner Body 2 Suction Port Body 3 Extension Pipe (Suction Air Body)
4 Electric Blower 5 Dust Collection Unit 6 Dust Collection Path 22a Suction Port 61 First Branch Path 62 Second Branch Path 63b Horizontal Pipe Section (Horizontal Direction Section)
66 Lower base end portion 67 Branch base end portion 663 Lateral portion 763 Lateral portion A Upright type vacuum cleaner

Claims (5)

A vacuum cleaner body equipped with an electric blower and a dust collecting part for collecting dust on the upstream side of the electric blower;
The suction downstream end is connected to the dust collecting part, the suction upstream side has a portion extending downward toward the lower part of the cleaner body, and the suction port attached to the lower part of the cleaner body A suction passage that branches into a first branch passage that is connected and a second branch passage that is connected to a suction air passage that is in communication with a suction air passage that is different from the suction opening, and the suction mouth and the suction air An upright vacuum cleaner that can selectively suck in from the road body,
In a state where the vacuum cleaner body is erected, the lower base end portion of the first branch passage extending downward and the branch base end portion of the second branch passage are shifted so as not to overlap in the vertical direction under isosamples toward the dust collecting unit together with, when said dust from the second branch path side is dropped Ri located near high the lower base end than the portion for receiving the dust, from the lower base end portion for An upright vacuum cleaner. The upright type electric vacuum cleaner according to claim 1, wherein the upright vacuum cleaner is inclined from the lower base end portion to the dust collecting portion. The upright type electric vacuum cleaner according to claim 1, wherein a step portion is provided between the lower base end portion and the first branch path. 4. The dust suction path according to claim 1, wherein a branch base end portion of the second branch path is arranged on a suction downstream side with respect to a lower base end portion of the first branch path . 5. The upright type electric vacuum cleaner according to item 1 . The dust suction path includes a lateral part extending laterally from the dust collection part and having a tip communicating with the first branch path;
The lateral portion is in the state of being erected cleaner body, an upright type according to claim 4, characterized in that it is arranged so that the lower base end portion than the dusts falling portion becomes higher Electric vacuum cleaner.

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