JP3789670B2 - Vacuum cleaner - Google Patents

Vacuum cleaner Download PDF

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Publication number
JP3789670B2
JP3789670B2 JP01532199A JP1532199A JP3789670B2 JP 3789670 B2 JP3789670 B2 JP 3789670B2 JP 01532199 A JP01532199 A JP 01532199A JP 1532199 A JP1532199 A JP 1532199A JP 3789670 B2 JP3789670 B2 JP 3789670B2
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JP
Japan
Prior art keywords
suction tool
vacuum cleaner
tool storage
suction
upper case
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP01532199A
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Japanese (ja)
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JP2000210235A (en
Inventor
裕隆 鹿野
憲一郎 土肥
明宏 森田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Publication date
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Priority to JP01532199A priority Critical patent/JP3789670B2/en
Publication of JP2000210235A publication Critical patent/JP2000210235A/en
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Publication of JP3789670B2 publication Critical patent/JP3789670B2/en
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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/0009Storing devices ; Supports, stands or holders
    • A47L9/0018Storing devices ; Supports, stands or holders integrated in or removably mounted upon the suction cleaner for storing parts of said suction cleaner
    • A47L9/0027Storing devices ; Supports, stands or holders integrated in or removably mounted upon the suction cleaner for storing parts of said suction cleaner specially adapted for holding the suction cleaning tools

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Suction Cleaners (AREA)

Description

【0001】
【発明の属する技術分野】
本願発明は電気掃除機に係わり、特に隙間用吸込口等の補助吸込具を掃除機本体の背面側に開口する吸込具収納部に着脱自在に収納するようにした電気掃除機に関するものである。
【0002】
【従来の技術】
一般的な電気掃除機(床移動型掃除機)は、電動送風機,集塵室,コードリール等を内蔵する本体ケースが下ケースと上ケース及び集塵蓋により形成されている。すなわち、電動送風機やコードリールを覆う上ケースが下ケースに後部側を含む複数箇所でネジ止め固定され、この上ケースの前部側に集塵室を開閉自在に覆う集塵蓋が設けられている。
【0003】
また、掃除中に床用吸込具と差し替えて度々使われる隙間用吸込口等を手軽に使用できるよう、掃除機本体に隙間用吸込口等の補助吸込具を収納する吸込具収納部を備えたものが良く知られている。この場合、収納や取り出しの容易さや形成しやすさ等を考慮して、上ケースの背面側に開口する吸込具収納部を形成したものがある。
【0004】
【発明が解決しようとする課題】
ところが、このような従来の電気掃除機においては、下ケースと上ケースの後部側のネジ止めを、通常のように上ケース上面から行うと、その下に形成された吸込具収納部をネジが貫通することになるので上ケース上面からは行うことができず、下ケース底面からネジ止めしなければならないため、上方からネジ廻しする通常の自動機によるネジ止めが困難になるという課題があった。
【0005】
そこで、本願発明はこのような課題を解決するためになされたものであり、上ケースの背面側に開口する吸込具収納部を形成しても自動機によるネジ止めを容易に行うことができる電気掃除機を提供することを目的とするものである。
【0006】
さらに、上記のような吸込具収納部への補助吸込具の着脱を容易に行うことができる電気掃除機を提供すること等を目的とするものである。
【0007】
【課題を解決するための手段】
上記のような目的を達成するために、本願発明は、掃除機本体を形成する下ケースと上ケースの後部側をネジ止め固定すると共に、前記上ケースの背面側に開口して隙間用吸込口等の補助吸込具を収納する吸込具収納部を備えた電気掃除機であって、
前記吸込具収納部の底壁に、その開口縁から吸込具収納位置の下方に達する凹部を形成すると共に、前記凹部に前記ネジ止め部を形成し、更に、前記ネジ止め部に対応して前記吸込具収納部の上壁開口縁に切欠部を形成したことを特徴とするものである。
【0008】
さらに、前記切欠部は、前記上壁開口縁から吸込具収納位置の上方に達する円弧状に形成されて成ることを特徴とするものである。
【0010】
また、前記吸込具収納部の底壁に、収納された補助吸込具の脱落を防止する凸部を形成したことを特徴とするものである。
【0011】
【発明の実施の形態】
以下、本願発明の実施形態を図1〜図9を参照して詳細に説明する。
【0012】
本実施形態における床移動型の掃除機本体1は、内部に電動送風機,集塵室,電源コードを巻き取るコードリール等を内蔵する本体ケースが下ケース2と上ケース3及び集塵蓋4により形成されている。
【0013】
すなわち、電動送風機やコードリールを覆う上ケース3が下ケース2に後部側を含む複数箇所でネジ止め固定され、この上ケース3の前部側に集塵室を開閉自在に覆う集塵蓋4が設けられている。
【0014】
下ケース2の底面中央の前方には小さな前輪5が1個備えられ、後部両側には大きな後輪6,6が備えられている。また、下ケース2の背面側には、グリル7で覆われた排気口8が形成されている。
【0015】
また、本体1上部には、上ケース3と集塵蓋4の間に回動自在に取り付けられた本体1持ち運び用のハンドル9が備えられている。
【0016】
そして、上ケース3の後部には、その背面側に開口して隙間用吸込具10を横に寝かせた状態に嵌め込み式で着脱自在に収納する吸込具収納部11が形成されている。
【0017】
上記吸込具収納部11の底壁12には、その開口縁から吸込具収納位置の下方に達する半円形状の凹部13が形成され、その底部に上ケース3後部側を下ケース2にネジ止めするためのネジ止め部14が形成されている。従って、このネジ止め部14に形成されたネジ孔15にネジ16を差し込んでネジ込むことにより、上ケース3の後部側が下ケース2にネジ止め固定されるようになっている。
【0018】
また、上記吸込具収納部11において隙間用吸込口10の径大部10a側が収納される底壁12には、収納された隙間用吸込口10の脱落を防止するための凸部17が形成され、この凸部17と上壁間の間隔を隙間用吸込口10の径大部10aの外径と同等に形成することにより、隙間用吸込口10が脱落することなく、嵌め込み式で着脱自在に収納できるようになっている。
【0019】
一方、この吸込具収納部11の上壁18の開口縁には、上記底壁12側に形成されたネジ止め部14に対応して図3等に示すように上ケース3上面からネジ孔15が見えるような切欠部19が形成されている。また、この切欠部19は、上壁18開口縁から吸込具収納位置の上方に達する円弧状に形成されている。
【0020】
ところで、上ケース3の背面側に、上記のような隙間用吸込口10脱落防止用の凸部17が形成された吸込具収納部11を成型する場合、凸部17の奥側が金型構造上アンダーカットとなるため型抜きができなくなる。この場合、吸込具収納部11を成型する側の金型にはアンダーカット部分を設けずに凸部17の高さに合わせ、内側を成型する金型も凸部17の高さに合わせることで、型抜きが可能となるが、凸部17の奥側に図4に示すようなアンダーカット孔20が形成されてしまう。このようなアンダーカット孔20ができると、そこから排気漏れが生じてしまうので、排気漏れを防ぐためアンダーカット孔20を塞ぐパッキン等の部品が別途必要になる。
【0021】
そこで、本実施形態では、上記アンダーカット孔20と位置的に対応して内装される図6,図7に示すようなコードリール支持部材21を有効利用して、このコードリール支持部材21に、上記アンダーカット孔20に対応した位置に、対応した形状のリブ22を形成するようにしている。
【0022】
従って、本体1を組み立てると、図8,図9の断面図で示すように、上記コードリール支持部材21に形成したリブ22が、上ケース3側の吸込具収納部11に形成されたアンダーカット孔20にぴったりと嵌合し外観の一部となって孔20が塞がれるので、パッキン等の別部品を用いることなく排気漏れが生じるのを防ぐことができるようになっている。
【0023】
さて、本実施形態の本体1を組み立てるときには、上ケース3の背面側に開口する吸込具収納部11が形成されていても、その底壁12の凹部13底面にあるネジ止め部14に対応して上壁18側に切欠部19が形成されているので、上ケース3上面側からのネジ締めが可能となるため、自動機によるネジ止めを容易に行うことができるようになる。
【0024】
また、上記切欠部19は隙間用吸込口10の収納位置の上方に達する円弧状に形成されているので、隙間用吸込口10を持った手の甲等が上壁18にぶつかることなく容易に着脱できる。さらに、底壁12側には隙間用吸込口10の収納位置の下方に達する凹部13が形成されているので、隙間用吸込口10を持った手の親指等が底壁12にぶつかることなく容易に着脱できる。すなわち、本実施形態のものでは、隙間用吸込口10を手で掴むようにして持ったまま容易に着脱できるので、極めて着脱しやすいものとなる。
【0025】
また、底壁12に形成した上記凹部13内にネジ止め部14があるので、隙間用吸込口10を着脱するときに、隙間用吸込口10がネジ頭に当たって傷付くような不具合も防ぐことができる。
【0026】
また、隙間用吸込具10を吸込具収納部11に収納した状態では、ネジ止め部14が上方から見えなくなるので、外観性も向上する。
【0027】
【発明の効果】
以上のように本願発明によれば、上ケースの背面側に開口する吸込具収納部の底壁にネジ止め部を形成すると共に、このネジ止め部に対応して当該吸込具収納部の上壁開口縁に切欠部を形成したことにより、この切欠部を介して上ケース上面側から収納部底壁側のネジ止め部のネジ締めを行うことができるので、上ケースの背面側に開口する吸込具収納部を形成しても自動機によるネジ止めを容易に行うことができるようになる。また、前記吸込具収納部の底壁に、その開口縁から吸込具収納位置の下方に達する凹部を形成し、当該凹部に前記ネジ止め部を形成したことにより、補助吸込具の着脱が容易になると共に、ネジ頭で補助吸込具を傷つけるような不具合も防ぐことができる。
【0028】
さらに、前記切欠部を、前記上壁開口縁から吸込具収納位置の上方に達する円弧状に形成したことにより、上記効果に加えて、補助吸込具の着脱を容易に行うことができる。
【0030】
また、前記吸込具収納部の底壁に、収納された補助吸込具の脱落を防止する凸部を形成したことにより、上記のような効果に加えて、補助吸込具の着脱の容易さを損なうことなく、収納された補助吸込具の脱落を防ぐことができる。
【図面の簡単な説明】
【図1】本願発明の実施形態に係る電気掃除機を背面側斜め上方から見た斜視図。
【図2】上記実施形態において吸込具収納部に隙間用吸込口を収納した状態を示す背面図。
【図3】上記実施形態における上ケースの平面図。
【図4】同じく、上ケースの裏面図。
【図5】同じく、上ケースの要部縦断面図。
【図6】コードリール支持部材の側面図。
【図7】同じく、背面図。
【図8】上記上ケースの吸込具収納部に形成されるアンダーカット孔がコードリール支持部材に形成したリブで塞がれた状態を示す要部縦断面図。
【図9】上記図8で2点破線の丸で囲んだ部分の拡大断面図。
【符号の説明】
1 掃除機本体
2 下ケース
3 上ケース
4 集塵蓋
10 隙間用吸込口
11 吸込具収納部
12 底壁
13 凹部
14 ネジ止め部
15 ネジ孔
16 ネジ
17 凸部
18 上壁
19 切欠部
20 アンダーカット孔
21 コードリール支持部材
22 リブ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner in which an auxiliary suction tool such as a suction port for a gap is detachably housed in a suction tool housing that opens on the back side of the vacuum cleaner body.
[0002]
[Prior art]
In a general electric vacuum cleaner (floor moving type vacuum cleaner), a main body case containing an electric blower, a dust collection chamber, a cord reel, and the like is formed by a lower case, an upper case, and a dust collection lid. In other words, the upper case that covers the electric blower and the cord reel is fixed to the lower case with screws at a plurality of locations including the rear side, and a dust collection cover is provided on the front side of the upper case so as to open and close the dust collection chamber. Yes.
[0003]
In addition, the vacuum cleaner body is equipped with a suction tool storage part for storing auxiliary suction tools such as the suction port for gaps so that the suction port for gaps that are frequently used by replacing the floor suction tool during cleaning can be used easily. Things are well known. In this case, in consideration of ease of storage and removal, ease of formation, and the like, a suction tool storage portion that opens to the back side of the upper case is formed.
[0004]
[Problems to be solved by the invention]
However, in such a conventional vacuum cleaner, when screwing the rear side of the lower case and the upper case from the upper case upper surface as usual, the screw is inserted into the suction device storage portion formed below the upper case. Since it will penetrate, it can not be done from the upper case upper surface, it must be screwed from the bottom of the lower case, there was a problem that screwing by a normal automatic machine that rotates from the top is difficult .
[0005]
Accordingly, the present invention has been made to solve such a problem, and can be easily screwed by an automatic machine even if a suction device storage portion opened on the back side of the upper case is formed. The object is to provide a vacuum cleaner.
[0006]
Furthermore, it aims at providing the vacuum cleaner which can perform easily attachment or detachment of the auxiliary suction tool to the suction tool storage part as mentioned above.
[0007]
[Means for Solving the Problems]
To achieve the above object, the present invention provides a vacuum cleaner rear side of the lower case and the upper case together be screwed to form the body, gaps suction port opened to the rear side of the upper case A vacuum cleaner equipped with a suction tool storage for storing auxiliary suction tools such as
The bottom wall of the suction tool housing section, thereby forming a recess from the opening edge reaches the lower suction tool storage position, said forming a screw portion in the recess, further, the corresponding to the screw portion A notch portion is formed in the upper wall opening edge of the suction tool storage portion.
[0008]
Further, the notch portion is formed in an arc shape reaching from the upper wall opening edge to above the suction tool storage position.
[0010]
Moreover, the convex part which prevents omission of the accommodated auxiliary suction tool was formed in the bottom wall of the said suction tool storage part.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.
[0012]
The floor moving type vacuum cleaner main body 1 according to the present embodiment includes an electric blower, a dust collection chamber, a cord reel for winding a power cord, and the like. Is formed.
[0013]
That is, the upper case 3 that covers the electric blower and the cord reel is fixed to the lower case 2 with screws at a plurality of locations including the rear side, and the dust collection cover 4 that covers the dust collection chamber on the front side of the upper case 3 so as to be freely opened and closed. Is provided.
[0014]
One small front wheel 5 is provided in front of the bottom center of the lower case 2, and large rear wheels 6 and 6 are provided on both sides of the rear part. An exhaust port 8 covered with a grill 7 is formed on the back side of the lower case 2.
[0015]
Further, a handle 9 for carrying the main body 1 is provided at the upper part of the main body 1 so as to be rotatable between the upper case 3 and the dust collecting lid 4.
[0016]
In the rear portion of the upper case 3, there is formed a suction tool storage portion 11 that is open on the back side thereof and is detachably stored in a state that the clearance suction tool 10 is laid sideways.
[0017]
The bottom wall 12 of the suction tool storage part 11 is formed with a semicircular recess 13 that extends from the opening edge of the suction tool storage part 11 to the lower side of the suction tool storage position, and the rear side of the upper case 3 is screwed to the lower case 2 at the bottom. A screwing portion 14 is formed. Therefore, the rear side of the upper case 3 is fixed to the lower case 2 by screwing the screw 16 into the screw hole 15 formed in the screw fixing portion 14.
[0018]
In addition, a convex portion 17 is formed on the bottom wall 12 in which the large diameter portion 10a side of the clearance suction port 10 is stored in the suction tool storage portion 11 to prevent the stored clearance suction port 10 from falling off. By forming the gap between the convex portion 17 and the upper wall to be equal to the outer diameter of the large-diameter portion 10a of the clearance suction port 10, the clearance suction port 10 does not fall off and can be detachably fitted. It can be stored.
[0019]
On the other hand, at the opening edge of the upper wall 18 of the suction tool storage 11, the screw hole 15 extends from the upper surface of the upper case 3 as shown in FIG. 3 corresponding to the screwing portion 14 formed on the bottom wall 12 side. A notch 19 is formed so that can be seen. Moreover, this notch part 19 is formed in the circular arc shape which reaches the upper direction of the suction tool accommodation position from the upper wall 18 opening edge.
[0020]
By the way, when the suction tool storage part 11 in which the convex part 17 for preventing the gap suction port 10 from falling off is formed on the back side of the upper case 3 is molded, the rear side of the convex part 17 is on the mold structure. It becomes undercut and die cutting is impossible. In this case, the mold on the side for molding the suction tool storage unit 11 is adjusted to the height of the convex part 17 without providing an undercut portion, and the mold for molding the inner side is also adjusted to the height of the convex part 17. Although the die can be removed, an undercut hole 20 as shown in FIG. 4 is formed on the back side of the convex portion 17. If such an undercut hole 20 is formed, exhaust leakage will occur therefrom. Therefore, parts such as packing for closing the undercut hole 20 are separately required to prevent exhaust leakage.
[0021]
Therefore, in the present embodiment, the cord reel support member 21 as shown in FIGS. 6 and 7 that is installed in a position corresponding to the undercut hole 20 is effectively used. A rib 22 having a corresponding shape is formed at a position corresponding to the undercut hole 20.
[0022]
Therefore, when the main body 1 is assembled, as shown in the cross-sectional views of FIGS. 8 and 9, the rib 22 formed on the cord reel support member 21 is an undercut formed on the suction tool storage 11 on the upper case 3 side. Since the hole 20 is tightly fitted to the hole 20 and becomes a part of the appearance, the hole 20 is blocked, so that it is possible to prevent the occurrence of exhaust leakage without using another component such as packing.
[0023]
Now, when assembling the main body 1 of the present embodiment, even if the suction tool storage portion 11 opening on the back side of the upper case 3 is formed, it corresponds to the screwing portion 14 on the bottom surface of the recess 13 of the bottom wall 12. Since the notch 19 is formed on the upper wall 18 side, it is possible to fasten the screw from the upper surface side of the upper case 3, so that the screwing by the automatic machine can be easily performed.
[0024]
Further, since the notch 19 is formed in an arc shape that extends above the storage position of the clearance suction port 10, it can be easily attached and detached without the back of the hand holding the clearance suction port 10 hitting the upper wall 18. . Furthermore, since a recess 13 is formed on the bottom wall 12 side so as to reach the lower side of the storage position of the suction port 10 for the gap, the thumb or the like of the hand holding the suction port 10 for the gap does not easily hit the bottom wall 12. Can be attached and detached. That is, in the present embodiment, since the gap suction port 10 can be easily attached and detached while being held by hand, it is extremely easy to attach and detach.
[0025]
Moreover, since the screwing part 14 is in the said recessed part 13 formed in the bottom wall 12, when the suction opening 10 for gaps is attached or detached, the malfunction that the suction opening 10 for gaps hits a screw head and is damaged can also be prevented. it can.
[0026]
Moreover, in the state which accommodated the suction tool 10 for gap | intervals in the suction tool storage part 11, since the screwing part 14 becomes invisible from upper direction, an external appearance property also improves.
[0027]
【The invention's effect】
As described above, according to the present invention, the screwing portion is formed on the bottom wall of the suction tool storage portion that opens on the back side of the upper case, and the upper wall of the suction tool storage portion corresponding to the screwing portion. By forming a notch in the opening edge, the screw fastening part on the bottom wall side of the storage part can be tightened from the upper case top side through this notch, so the suction opening that opens to the back side of the upper case Even if the tool storage portion is formed, screwing by an automatic machine can be easily performed. Moreover, the recessed part which reaches the downward direction of the suction tool storage position from the opening edge is formed in the bottom wall of the suction tool storage part, and the attachment and detachment of the auxiliary suction tool is facilitated by forming the screwing part in the recess. In addition, it is possible to prevent problems such as damaging the auxiliary suction tool with the screw head.
[0028]
Furthermore, in addition to the above effects, the auxiliary suction tool can be easily attached and detached by forming the notch in an arc shape that extends from the upper wall opening edge to above the suction tool storage position.
[0030]
In addition to the above effects, the ease of attaching and detaching the auxiliary suction tool is impaired in addition to the above effects by forming a convex portion on the bottom wall of the suction tool storage portion to prevent the stored auxiliary suction tool from falling off. Without this, it is possible to prevent the stored auxiliary suction tool from falling off.
[Brief description of the drawings]
FIG. 1 is a perspective view of an electric vacuum cleaner according to an embodiment of the present invention as viewed from obliquely upward on the back side.
FIG. 2 is a rear view showing a state in which a suction port for a gap is stored in a suction tool storage unit in the embodiment.
FIG. 3 is a plan view of an upper case in the embodiment.
FIG. 4 is a rear view of the upper case in the same manner.
FIG. 5 is a longitudinal sectional view of the main part of the upper case, similarly.
FIG. 6 is a side view of a cord reel support member.
FIG. 7 is also a rear view.
FIG. 8 is a vertical cross-sectional view of a main part showing a state in which an undercut hole formed in a suction tool storage portion of the upper case is closed by a rib formed in a cord reel support member.
9 is an enlarged sectional view of a portion surrounded by a two-dot broken line in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 2 Lower case 3 Upper case 4 Dust collection cover 10 Crevice suction inlet 11 Suction tool accommodating part 12 Bottom wall 13 Recessed part 14 Screw stop part 15 Screw hole 16 Screw 17 Convex part 18 Upper wall 19 Notch part 20 Undercut Hole 21 Cord reel support member 22 Rib

Claims (3)

掃除機本体を形成する下ケースと上ケースの後部側をネジ止め固定すると共に、前記上ケースの背面側に開口して隙間用吸込口等の補助吸込具を収納する吸込具収納部を備えた電気掃除機であって、
前記吸込具収納部の底壁に、その開口縁から吸込具収納位置の下方に達する凹部を形成すると共に、前記凹部に前記ネジ止め部を形成し、更に、前記ネジ止め部に対応して前記吸込具収納部の上壁開口縁に切欠部を形成したことを特徴とする電気掃除機。
The rear side of the lower case and the upper case to form a vacuum cleaner body while screwing, with a suction unit housing part for housing the auxiliary suction tool clearance suction port or the like open to the rear side of the upper case A vacuum cleaner,
The bottom wall of the suction tool housing section, thereby forming a recess from the opening edge reaches the lower suction tool storage position, said forming a screw portion in the recess, further, the corresponding to the screw portion A vacuum cleaner characterized in that a notch is formed in the opening edge of the upper wall of the suction tool storage.
前記切欠部は、前記上壁開口縁から吸込具収納位置の上方に達する円弧状に形成されて成ることを特徴とする請求項1記載の電気掃除機。  2. The electric vacuum cleaner according to claim 1, wherein the notch is formed in an arc shape extending from the upper wall opening edge to above the suction tool storage position. 前記吸込具収納部の底壁に、収納された補助吸込具の脱落を防止する凸部を形成したことを特徴とする請求項1又は請求項2記載の電気掃除機。The vacuum cleaner according to claim 1 or 2, wherein a convex portion for preventing the stored auxiliary suction tool from falling off is formed on the bottom wall of the suction tool storage section.
JP01532199A 1999-01-25 1999-01-25 Vacuum cleaner Expired - Fee Related JP3789670B2 (en)

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JP01532199A JP3789670B2 (en) 1999-01-25 1999-01-25 Vacuum cleaner

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Application Number Priority Date Filing Date Title
JP01532199A JP3789670B2 (en) 1999-01-25 1999-01-25 Vacuum cleaner

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JP2000210235A JP2000210235A (en) 2000-08-02
JP3789670B2 true JP3789670B2 (en) 2006-06-28

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JP01532199A Expired - Fee Related JP3789670B2 (en) 1999-01-25 1999-01-25 Vacuum cleaner

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