JP3777447B2 - Vacuum cleaner - Google Patents

Vacuum cleaner Download PDF

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Publication number
JP3777447B2
JP3777447B2 JP00858398A JP858398A JP3777447B2 JP 3777447 B2 JP3777447 B2 JP 3777447B2 JP 00858398 A JP00858398 A JP 00858398A JP 858398 A JP858398 A JP 858398A JP 3777447 B2 JP3777447 B2 JP 3777447B2
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JP
Japan
Prior art keywords
tube
pipe
extension
lock
vacuum cleaner
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 - Lifetime
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JP00858398A
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Japanese (ja)
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JPH11206655A (en
Inventor
一夫 乳井
正博 馬場
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.)
Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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Priority to JP00858398A priority Critical patent/JP3777447B2/en
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Publication of JP3777447B2 publication Critical patent/JP3777447B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、電気掃除機の伸縮自在な延長管の構造に関するものである。
【0002】
【従来の技術】
図4は例えば特開平9−215642号公報に記載された従来の電気掃除機を示す斜視図、図5は従来の電気掃除機の延長管を示す縦断面図、図6は同じく延長管の側断面図、図7は延長管の収納状態を示す側断面図、図8は図6に示す延長管のA−A断面図である。
【0003】
図において、1は掃除機本体であり、吸気圧を発生する電動送風機2と塵埃を捕集する集塵袋3を収納する集塵室4を有している。集塵室4にはピアノ線52と電線53を2本ずつ螺旋状に埋設した可撓性のホース5の一端が接続されており、ホース5の他端側には電動送風機2の回転をコントロールする制御装置6が設けられている。制御装置6はピアノ線52を介して電動送風機2と接続している。7は電動吸込具であり、回転清掃体8とその駆動源となるモータ9が内蔵されている。10は制御装置6に接続され、内管11と外管12とから伸縮可能に構成された延長管であり、内部には電力供給路13が形成されている。そして、延長管10に設けられた電力供給路13とホース5に埋設された電線53を介して掃除機本体1よりモータ9に電力が供給される。14は制御装置6に設けられた電動吸込具7のモータ9の回転を入切りするためのブラシスイッチである。
【0004】
ここで、延長管10の構造について詳細に説明する。
図5に示すとおり、延長管10は円筒形状をした内管11と外管12及び接続管15で構成されている。内管11の外径と外管12の内径には若干の隙間が設けられており、内管11は外管12内に摺動可能に挿入される。また、内管11の他端には接続管15が挿入固着されている。
【0005】
また、延長管10は図6に示すとおり、外管12の端部に内管11の摺動を固定する伸縮ロックボタン16が設けられている。伸縮ロックボタン16の下方にはコイルバネ17が設けられており、伸縮ロックボタン16の端部に設けたロック片18を内管11外周面に設けた複数のロック溝19に付勢するように作用している。延長管10の伸長状態で伸縮ロックボタン16を押圧することにより、延長管10のロックが解除され内管11と外管12の摺動が可能となる。
【0006】
また、図7に示すとおり、延長管10の縮小状態では内管11全体を外管12の内部に収納することが可能である。そして、上述したように、内管11の外周面には複数個のロック溝19が設けられているので伸縮ロックボタン16のロック位置により延長管10の長さを任意の位置で固定することができる。
【0007】
次に延長管10内の電力供給路13の構造について説明する。
図8に示すように、円筒状の内管11はゴミ流路20と電力供給室21に仕切られており、電力供給室21内にはコイルスプリング22で形成された電力供給路13と導電体を覆う覆体23が配設されている。覆体23は内管覆体24と外管覆体25から形成されており、内管覆体24と外管覆体25は内管11と外管12の摺動に伴って内管覆体24内部に外管覆体25が重合に挿嵌し摺動するように構成されている。
【0008】
また、外管覆体25は延長管10の長手方向に渡って隔壁26が設けられており、2つのコイルスプリング22が接触しないように構成されている。さらに、図6に示すように内管覆体24は内管11の電力供給室21に固定され、外管覆体25は外管12の内面に固定されている。
【0009】
延長管10の外管12の一端にはホース5と電気的に接続する一対の電極ピン27が配設され、それぞれ一対の第1のリード線28を介して外管覆体25内に配設する一対のコイルスプリング22に接続されている。また、コイルスプリング22は外管覆体25の隔壁26によって仕切られた空間内の長手方向に沿ってそれぞれ配設されており、それぞれのコイルスプリング22の内管側端部は内管覆体24内に一定長で固定された一対の第2のリード線29と接続され、第2のリード線29は接続管15へと導かれる。なお、延長管10の伸縮による電力供給室21の長さの変化は弾性を有するコイルスプリング22が伸縮を行うことにより対応する。
【0010】
次に従来の電気掃除機の延長管10の動作について説明する。
ホース5の他端に設けられた制御装置6からの信号はホース5に埋設されたピアノ線52を介して電動送風機2に伝わり、電動送風機2が回転する。電動送風機2の負圧により電動吸込具7から吸塵されたゴミは延長管10からホース5を通って集塵袋3内に捕獲される。
【0011】
また、制御装置6に設けられたブラシスイッチ14を入れると掃除機本体1からホース5に埋設された電線53を通り、延長管10に給電され、電極ピン27、第1のリード線28、コイルスリング22、第2のリード線29を通って電動吸込具7内のモータ9に給電される。そして、モータ9の回転により回転清掃体8が回転し、じゅうたん内のゴミをかき出す。
【0012】
さらに、伸縮ロックボタン16を押すとロック片18はロック溝19から外れ、内管11と外管12が摺動可能となる。電力供給路13の長さの変化は内管11と外管12の摺動に伴って内管覆体24と外管覆体25が摺動するとともに弾性を有するコイルスプリング22が伸縮を行うことにより対応する。
【0013】
図9は特開平9−215641号公報(以下、従来技術2と記す。)に示された従来の電気掃除機の延長管を示す接続部分の側断面図である。図において、延長管10は外管12とこの外管12内に摺動自在な内管11とから構成されており、内管11には内管導電体30、外管12には外管導電体31が設けられ、両導電体30・31は内管11の外周面に螺旋状に巻かれたコイル状導電体32によって接続されている。
【0014】
従来技術2においても電気掃除機本体からの電力供給はホース(図示せず)を通り、電動吸込具(図示せず)に供給される。
【0015】
【発明が解決しようとする課題】
以上のように、従来の電気掃除機の延長管は内管と外管の摺動部を設けているため内管と外管で構成するゴミ流路には若干の隙間が必要であり、その隙間から風漏れが発生し、吸塵性能を低下させるという問題があった。
【0016】
また、図8に示すように、円筒内に突出して電力供給路を設けるため、ゴミ流路が狭くなり、ゴミつまりが発生しやすいという問題もあった。
【0017】
さらに、従来技術2においては、その構造上、外管導電体と内管導電体およびコイル状導電体が断面上で重複するため延長管の外径が太くなり使い勝手が悪いという問題があった。
【0018】
本発明の電気掃除機は上記の課題を解決するためになされたもので、ゴミ流路内での風漏れがなく伸縮可能な延長管を備えた電気掃除機を提供することを目的としている。
【0019】
さらに、ゴミ流路内での風漏れがなく伸縮可能であるとともに、延長管の伸縮時にも電力供給路を常に通電可能に保つ延長管を備えた電気掃除機を提供することを目的としている。
【0020】
【課題を解決するための手段】
この発明にかかる電気掃除機は、内管と外管とを摺動可能に配置した伸縮可能な延長管と、前記延長管の一端に接続される吸込具とを備え、前記延長管には、前記外管の一端部に設けられた接続体と前記内管の外管内を摺動する端部とを連結する伸縮可能な蛇腹管を設け、前記延長管の前記内管には、その外周面に設けた複数個のロック溝と長手方向に形成したストッパー溝を有し、前記延長管の前記外管には、コイルバネにより前記ロック溝にロックされるように付勢するロック片を有する伸縮ロックボタンを取付け、また、前記外管側から前記ストッパー溝に嵌合する抜け止め片を形成したものである。
【0024】
【発明の実施の形態】
本発明の実施形態について図を用いて説明する。
図1は本発明の実施形態である電気掃除機の延長管を示す分解斜視図、図2は延長管の伸長状態を示す側断面図、図3は延長管の縮小状態を示す側断面図である。図において、33は筒状の外管側接続管であり、一端がホース(図示せず)に接続され、他端は外管12に挿入して固着される。34aは外管側接続管33の外管12側に形成された筒状の蛇腹接続部、34bは内管11に形成された筒状の蛇腹接続部、35は2条の螺旋状に山谷が形成された伸縮可能な蛇腹管であり、外管12内を貫通して蛇腹接続部34a、蛇腹接続部34bを挿入し、固着される。
【0025】
36は蛇腹管35の山側外周部に螺旋に沿って埋設された一対の硬鋼線であり、蛇腹管35の強度を保持している。硬鋼線36の一端は電極ピン27と接続する電線に導通可能に接続される。また、電極ピン27は外管側接続部33上部に配置されており、37は電極ピン27を覆うように外管側接続部33上部にネジ止めされた外接続管カバーである。
【0026】
38は内管11の外周面に内管11の長手方向に向かって形成された電線配線溝であり、電極板39を有する一対の内管電線40が挿入される。41は電線配線溝38を覆うように内管11外周面に溶着固定されたロックプレートであり、複数個のロック溝19を設けている。
【0027】
42は内管11の他端に挿入された内管側接続管であり、上面には電極板39と電動吸込具(図示せず)の着脱をするラッチ43とラッチバネ44が配設されている。45は電極板39、ラッチ43、ラッチバネ44を覆うように内管側接続管42上部にネジ止めされた内接続管カバーである。
【0028】
46は外管12内面に設けた廻り止め溝であり、内管11のロックプレート41と嵌合し、内管11と外管12は廻り止めして摺動可能となる。なお、外管12内面に形成した廻り止め溝46である凹部と、内管11外面に形成されたロックプレート41を示す突部は、この構成にかぎることではなく、例えば外管内面に突部を形成し、内管外面に前記突部と摺動可能に嵌合する凹部を別途設けてもよい。
【0029】
47は外管12の内管11側に形成されたロック穴、48はストッパー穴であり、伸縮ロックボタン16のロック片18はロック穴47を貫通して内管11のロック溝19に挿入されている。なお、内管11と外管12の伸縮はコイルバネ19により付勢されたロック片18によりロックされている。
【0030】
49はロック部カバー、50はロック部カバー49に設けた抜け止め片、51は内管11の長手方向に形成したストッパー溝であり、ロックカバー49は伸縮ロックボタン16を保持するとともに抜け止め片50が外管12のストッパー穴48を貫通し、ストッパー溝51に挿入され、内管11の抜け防止を図っている。
【0031】
次に本発明による延長管10の動作について説明する。
伸縮ロックボタン16のロック片18はコイルバネ17によって内管11のロック溝19に嵌合しており、内管11と外管12の伸縮はロックされている。伸縮ロックボタン16を押すとロック片20がロック溝19から外れ、伸縮が可能となるが、抜け止め片50がストッパー溝51に嵌合しているため内管11が外管12から抜けることはない。また、図3に示すように、ロック溝19は内管11の軸線上に複数個設けているので延長管10の長さを任意で調節可能である。また、外管側接続管33と内管11の間に固着された蛇腹管35は延長管10の長さに応じて伸縮する。
【0032】
また、電動吸込具(図示せず)から吸塵したゴミは内管側接続管42から内管11、蛇腹管35、外管側接続管33を通り、ホース(図示せず)を介して集塵袋に捕獲される。延長管10のゴミ流路には伸縮長さに関らず隙間がないため風漏れが発生せず吸塵力が低下することがない。
【0033】
次に電力供給路について説明する。
掃除機本体からホース(図示せず)を介して供給された電力は電極ピン27、蛇腹管35に螺旋状に巻かれた硬鋼線36を通って内管電線40、電極板39から電動吸込具(図示せず)内のモータに供給される。延長管10の伸縮長さにかかわらず延長管10の両端で確実に安定した電力供給をおこなうことができる。
【0034】
【発明の効果】
本発明の電気掃除機の延長管は外管の内部に伸縮可能な蛇腹管を配置し、内管の端部に該蛇腹管を接続したので、延長管の伸縮が自在であるとともにゴミ流路での風漏れがなく吸塵性能の低下がない。
【0037】
また、蛇腹管には一対の導電線を埋設しているので延長管の伸縮に関らず安定した電力の供給が可能であるとともに導電体が断面上で重複していないので、延長管の外径を細くでき、使い勝手がよい。
【0038】
【図面の簡単な説明】
【図1】 本発明の実施の形態を示す電気掃除機の延長管を示す分解斜視図である。
【図2】 本発明の実施の形態を示す電気掃除機の延長管の伸長状態を示す側断面図である。
【図3】 本発明の実施の形態を示す電気掃除機の延長管の縮小状態を示す側断面図である。
【図4】 従来の電気掃除機の斜視図である。
【図5】 従来の延長管の縦断面図である。
【図6】 従来の延長管の横断面図である。
【図7】 従来の延長管の収納状態を示す側断面図である。
【図8】 従来の延長管の内管の断面図である。
【図9】 従来の電気掃除機の延長管の接続部分の側断面図である。
【符号の説明】
1 掃除機本体、5 ホース、7 電動吸込具、8 回転清掃体、
9 モータ、10 延長管、11 内管、12 外管、
34a、34b 蛇腹接続部、35 蛇腹管、36 硬鋼線、
41 ロックプレート、46 廻り止め溝、52 ピアノ線、53 電線。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a telescopic extension tube of a vacuum cleaner.
[0002]
[Prior art]
4 is a perspective view showing a conventional vacuum cleaner described in, for example, Japanese Patent Laid-Open No. 9-215642, FIG. 5 is a longitudinal sectional view showing an extension pipe of the conventional vacuum cleaner, and FIG. 6 is a side of the extension pipe. FIG. 7 is a side sectional view showing a state in which the extension pipe is stored, and FIG. 8 is a sectional view taken along line AA of the extension pipe shown in FIG.
[0003]
In the figure, reference numeral 1 denotes a cleaner body, which has an electric blower 2 for generating intake pressure and a dust collection chamber 4 for storing a dust collection bag 3 for collecting dust. One end of a flexible hose 5 in which two piano wires 52 and two electric wires 53 are spirally embedded is connected to the dust collecting chamber 4. The other end of the hose 5 controls the rotation of the electric blower 2. A control device 6 is provided. The control device 6 is connected to the electric blower 2 via the piano wire 52. Reference numeral 7 denotes an electric suction tool, which incorporates a rotary cleaning body 8 and a motor 9 serving as a driving source thereof. Reference numeral 10 denotes an extension pipe connected to the control device 6 and configured to be extendable and contractable from the inner pipe 11 and the outer pipe 12, and a power supply path 13 is formed inside. Then, electric power is supplied to the motor 9 from the cleaner body 1 through the power supply path 13 provided in the extension pipe 10 and the electric wire 53 embedded in the hose 5. Reference numeral 14 denotes a brush switch for turning on and off the rotation of the motor 9 of the electric suction tool 7 provided in the control device 6.
[0004]
Here, the structure of the extension pipe 10 will be described in detail.
As shown in FIG. 5, the extension tube 10 includes a cylindrical inner tube 11, an outer tube 12, and a connection tube 15. A slight gap is provided between the outer diameter of the inner tube 11 and the inner diameter of the outer tube 12, and the inner tube 11 is slidably inserted into the outer tube 12. A connecting pipe 15 is inserted and fixed to the other end of the inner pipe 11.
[0005]
Further, as shown in FIG. 6, the extension tube 10 is provided with an expansion / contraction lock button 16 that fixes the sliding of the inner tube 11 at the end of the outer tube 12. A coil spring 17 is provided below the telescopic lock button 16 and acts to urge a lock piece 18 provided at the end of the telescopic lock button 16 to a plurality of lock grooves 19 provided on the outer peripheral surface of the inner tube 11. is doing. By pressing the telescopic lock button 16 while the extension tube 10 is extended, the extension tube 10 is unlocked, and the inner tube 11 and the outer tube 12 can slide.
[0006]
Further, as shown in FIG. 7, the entire inner tube 11 can be accommodated in the outer tube 12 when the extension tube 10 is contracted. As described above, since the plurality of lock grooves 19 are provided on the outer peripheral surface of the inner tube 11, the length of the extension tube 10 can be fixed at an arbitrary position by the lock position of the telescopic lock button 16. it can.
[0007]
Next, the structure of the power supply path 13 in the extension pipe 10 will be described.
As shown in FIG. 8, the cylindrical inner tube 11 is partitioned into a dust flow path 20 and a power supply chamber 21, and a power supply path 13 formed of a coil spring 22 and a conductor are formed in the power supply chamber 21. A cover 23 is provided to cover the cover. The cover 23 is formed of an inner tube cover 24 and an outer tube cover 25, and the inner tube cover 24 and the outer tube cover 25 are formed by sliding the inner tube 11 and the outer tube 12. The outer tube cover 25 is inserted into the inside 24 and slides.
[0008]
The outer tube cover 25 is provided with a partition wall 26 extending in the longitudinal direction of the extension tube 10 so that the two coil springs 22 do not come into contact with each other. Furthermore, as shown in FIG. 6, the inner tube cover 24 is fixed to the power supply chamber 21 of the inner tube 11, and the outer tube cover 25 is fixed to the inner surface of the outer tube 12.
[0009]
A pair of electrode pins 27 that are electrically connected to the hose 5 are disposed at one end of the outer tube 12 of the extension tube 10, and each is disposed in the outer tube cover 25 via a pair of first lead wires 28. Are connected to a pair of coil springs 22. The coil springs 22 are respectively disposed along the longitudinal direction in the space partitioned by the partition wall 26 of the outer tube cover 25, and the inner tube side end of each coil spring 22 is the inner tube cover 24. The second lead wire 29 is connected to a pair of second lead wires 29 fixed in a fixed length inside, and the second lead wire 29 is guided to the connecting pipe 15. Note that the change in the length of the power supply chamber 21 due to the expansion and contraction of the extension tube 10 corresponds to the expansion and contraction of the elastic coil spring 22.
[0010]
Next, the operation of the extension pipe 10 of the conventional vacuum cleaner will be described.
A signal from the control device 6 provided at the other end of the hose 5 is transmitted to the electric blower 2 via the piano wire 52 embedded in the hose 5, and the electric blower 2 rotates. The dust sucked from the electric suction tool 7 due to the negative pressure of the electric blower 2 is captured in the dust bag 3 through the extension pipe 10 through the hose 5.
[0011]
When the brush switch 14 provided in the control device 6 is turned on, power is supplied to the extension pipe 10 from the cleaner body 1 through the electric wire 53 embedded in the hose 5, and the electrode pin 27, the first lead wire 28, the coil Power is supplied to the motor 9 in the electric suction tool 7 through the sling 22 and the second lead wire 29. And the rotary cleaning body 8 rotates by rotation of the motor 9, and scrapes out the garbage in the carpet.
[0012]
Further, when the telescopic lock button 16 is pressed, the lock piece 18 is detached from the lock groove 19 so that the inner tube 11 and the outer tube 12 can slide. The change in the length of the power supply path 13 is that the inner tube cover 24 and the outer tube cover 25 slide as the inner tube 11 and the outer tube 12 slide, and the elastic coil spring 22 expands and contracts. It corresponds by.
[0013]
FIG. 9 is a side sectional view of a connecting portion showing an extension tube of a conventional electric vacuum cleaner disclosed in Japanese Patent Laid-Open No. 9-215641 (hereinafter referred to as prior art 2). In the drawing, the extension tube 10 is composed of an outer tube 12 and an inner tube 11 slidable in the outer tube 12. The inner tube conductor 30 is provided in the inner tube 11, and the outer tube conductive material is provided in the outer tube 12. A body 31 is provided, and both the conductors 30 and 31 are connected to each other by a coiled conductor 32 spirally wound around the outer peripheral surface of the inner tube 11.
[0014]
Also in the prior art 2, the electric power supply from the vacuum cleaner main body passes through a hose (not shown) and is supplied to an electric suction tool (not shown).
[0015]
[Problems to be solved by the invention]
As described above, since the extension pipe of the conventional vacuum cleaner has a sliding portion between the inner pipe and the outer pipe, a slight gap is required in the dust passage composed of the inner pipe and the outer pipe. There was a problem that wind leakage occurred from the gap and the dust absorption performance deteriorated.
[0016]
Further, as shown in FIG. 8, since the power supply path is provided so as to protrude into the cylinder, the dust flow path becomes narrow, and there is a problem that dust clogging is likely to occur.
[0017]
Furthermore, the prior art 2 has a problem that due to its structure, the outer tube conductor, the inner tube conductor, and the coiled conductor overlap on the cross section, so that the outer diameter of the extension tube is increased and the usability is poor.
[0018]
The vacuum cleaner of the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vacuum cleaner having an extension tube that can be expanded and contracted without leaking air in a dust channel.
[0019]
It is another object of the present invention to provide an electric vacuum cleaner including an extension pipe that can be expanded and contracted without wind leakage in the dust channel, and that can always energize the power supply path even when the extension pipe expands and contracts.
[0020]
[Means for Solving the Problems]
Vacuum cleaner according to the present invention comprises a stretchable extension tube arranged between the inner tube and the outer tube slidably, and a suction unit connected to one end of the extension tube, the extension tube, An extendable bellows pipe is provided to connect a connecting body provided at one end of the outer pipe and an end sliding inside the outer pipe of the inner pipe, and the outer pipe has an outer peripheral surface. A telescopic lock having a plurality of lock grooves provided on the stopper and a stopper groove formed in the longitudinal direction, and having a lock piece urged to be locked to the lock groove by a coil spring on the outer tube of the extension tube A button is attached, and a retaining piece that fits into the stopper groove is formed from the outer tube side .
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
1 is an exploded perspective view showing an extension tube of a vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a side sectional view showing an extended state of the extension tube, and FIG. 3 is a side sectional view showing a reduced state of the extension tube. is there. In the figure, 33 is a cylindrical outer tube side connecting tube, one end of which is connected to a hose (not shown), and the other end is inserted into the outer tube 12 and fixed. 34a is a cylindrical bellows connection portion formed on the outer tube 12 side of the outer tube side connection tube 33, 34b is a cylindrical bellows connection portion formed on the inner tube 11, and 35 is a two-row spiral mountain and valley. It is a formed bellows tube that can be expanded and contracted. The bellows connection portion 34a and the bellows connection portion 34b are inserted through the outer tube 12 and fixed.
[0025]
Reference numeral 36 denotes a pair of hard steel wires embedded along the spiral in the mountain side outer peripheral portion of the bellows tube 35, and holds the strength of the bellows tube 35. One end of the hard steel wire 36 is connected to an electric wire connected to the electrode pin 27 so as to be conductive. The electrode pin 27 is disposed on the outer tube side connection portion 33, and 37 is an outer connection tube cover screwed to the upper portion of the outer tube side connection portion 33 so as to cover the electrode pin 27.
[0026]
Reference numeral 38 denotes an electric wire wiring groove formed on the outer peripheral surface of the inner tube 11 in the longitudinal direction of the inner tube 11, and a pair of inner tube electric wires 40 having electrode plates 39 are inserted therein. A lock plate 41 is welded and fixed to the outer peripheral surface of the inner tube 11 so as to cover the wire wiring groove 38, and a plurality of lock grooves 19 are provided.
[0027]
Reference numeral 42 denotes an inner pipe side connecting pipe inserted into the other end of the inner pipe 11, and a latch 43 and a latch spring 44 for attaching / detaching the electrode plate 39 and the electric suction tool (not shown) are disposed on the upper surface. . Reference numeral 45 denotes an inner connection tube cover screwed to the upper portion of the inner tube side connection tube 42 so as to cover the electrode plate 39, the latch 43, and the latch spring 44.
[0028]
Reference numeral 46 denotes a rotation stop groove provided on the inner surface of the outer tube 12, which is fitted to the lock plate 41 of the inner tube 11, so that the inner tube 11 and the outer tube 12 are prevented from rotating and can slide. In addition, the protrusion which shows the recessed part which is the rotation stop groove | channel 46 formed in the inner surface of the outer tube | pipe 12, and the lock plate 41 formed in the outer surface of the inner tube | pipe 11 is not restricted to this structure, For example, a protrusion is formed in the inner surface of the outer tube And a recess that is slidably fitted to the protrusion may be provided on the outer surface of the inner tube.
[0029]
47 is a lock hole formed on the inner tube 11 side of the outer tube 12, 48 is a stopper hole, and the lock piece 18 of the telescopic lock button 16 passes through the lock hole 47 and is inserted into the lock groove 19 of the inner tube 11. ing. The expansion and contraction of the inner tube 11 and the outer tube 12 is locked by a lock piece 18 biased by a coil spring 19.
[0030]
Reference numeral 49 denotes a lock part cover, 50 denotes a retaining piece provided on the lock part cover 49, 51 denotes a stopper groove formed in the longitudinal direction of the inner tube 11, and the lock cover 49 holds the telescopic lock button 16 and retains the retaining piece. 50 penetrates the stopper hole 48 of the outer tube 12 and is inserted into the stopper groove 51 to prevent the inner tube 11 from coming off.
[0031]
Next, the operation of the extension pipe 10 according to the present invention will be described.
The lock piece 18 of the telescopic lock button 16 is fitted into the lock groove 19 of the inner tube 11 by the coil spring 17, and the expansion and contraction of the inner tube 11 and the outer tube 12 is locked. When the telescopic lock button 16 is pressed, the lock piece 20 is detached from the lock groove 19 and can be expanded and contracted. However, since the retaining piece 50 is fitted in the stopper groove 51, the inner tube 11 cannot be removed from the outer tube 12. Absent. Moreover, as shown in FIG. 3, since the lock groove 19 is provided with two or more on the axis line of the inner pipe | tube 11, the length of the extension pipe | tube 10 can be adjusted arbitrarily. Further, the bellows tube 35 fixed between the outer tube side connecting tube 33 and the inner tube 11 expands and contracts according to the length of the extension tube 10.
[0032]
Further, the dust collected from the electric suction tool (not shown) passes through the inner pipe 11, the bellows pipe 35, and the outer pipe side connecting pipe 33 from the inner pipe side connecting pipe 42 and is collected through a hose (not shown). Captured in a bag. Since there is no gap in the dust channel of the extension pipe 10 regardless of the length of expansion and contraction, wind leakage does not occur and the dust absorption force does not decrease.
[0033]
Next, the power supply path will be described.
Electric power supplied from the main body of the vacuum cleaner through a hose (not shown) is electrically sucked from the inner tube electric wire 40 and the electrode plate 39 through the electrode pin 27 and the hard steel wire 36 spirally wound around the bellows tube 35. It is supplied to a motor in a tool (not shown). Regardless of the extension / contraction length of the extension tube 10, it is possible to reliably supply power stably at both ends of the extension tube 10.
[0034]
【The invention's effect】
The extension tube of the vacuum cleaner of the present invention has a bellows tube that can be expanded and contracted inside the outer tube, and the bellows tube is connected to the end of the inner tube. There is no wind leakage and there is no decrease in dust absorption performance.
[0037]
In addition, since a pair of conductive wires are embedded in the bellows tube, stable power supply is possible regardless of expansion and contraction of the extension tube, and conductors do not overlap on the cross section. The diameter can be reduced, making it easy to use.
[0038]
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an extension tube of a vacuum cleaner according to an embodiment of the present invention.
FIG. 2 is a side sectional view showing an extended state of an extension tube of a vacuum cleaner showing an embodiment of the present invention.
FIG. 3 is a side sectional view showing a contracted state of the extension pipe of the electric vacuum cleaner according to the embodiment of the present invention.
FIG. 4 is a perspective view of a conventional electric vacuum cleaner.
FIG. 5 is a longitudinal sectional view of a conventional extension pipe.
FIG. 6 is a cross-sectional view of a conventional extension pipe.
FIG. 7 is a side sectional view showing a storage state of a conventional extension pipe.
FIG. 8 is a cross-sectional view of an inner tube of a conventional extension tube.
FIG. 9 is a side sectional view of a connecting portion of an extension pipe of a conventional vacuum cleaner.
[Explanation of symbols]
1 vacuum cleaner body, 5 hose, 7 electric suction tool, 8 rotating cleaning body,
9 Motor, 10 Extension pipe, 11 Inner pipe, 12 Outer pipe,
34a, 34b bellows connection part, 35 bellows pipe, 36 hard steel wire,
41 Lock plate, 46 Stop groove, 52 Piano wire, 53 Electric wire.

Claims (2)

内管と外管とを摺動可能に配置した伸縮可能な延長管と、前記延長管の一端に接続される吸込具とを備え、
前記延長管には、前記外管の一端部に設けられた接続体と前記内管の外管内を摺動する端部とを連結する伸縮可能な蛇腹管を設け、
前記延長管の前記内管には、その外周面に設けた複数個のロック溝と長手方向に形成したストッパー溝を有し、
前記延長管の前記外管には、コイルバネにより前記ロック溝にロックされるように付勢するロック片を有する伸縮ロックボタンを取付け、また、前記外管側から前記ストッパー溝に嵌合する抜け止め片を形成したことを特徴とする電気掃除機。
Comprising a telescopic extension tube and an inner tube and an outer tube arranged slidably, and a suction unit connected to one end of the extension tube,
The extension pipe is provided with a stretchable bellows pipe that connects a connecting body provided at one end of the outer pipe and an end portion that slides within the outer pipe of the inner pipe,
The inner pipe of the extension pipe has a plurality of lock grooves provided on the outer peripheral surface and a stopper groove formed in the longitudinal direction,
A telescopic lock button having a locking piece that is biased so as to be locked to the lock groove by a coil spring is attached to the outer pipe of the extension pipe, and the stopper that fits into the stopper groove from the outer pipe side is attached. A vacuum cleaner characterized by forming a piece .
延長管には、本体と吸込具を電気的に接続する導電体を配設し、前記導電体の一部が前記蛇腹管に埋設された1対の導電線よりなることを特徴とする請求項1記載の電気掃除機。  The extension pipe is provided with a conductor for electrically connecting the main body and the suction tool, and a part of the conductor is composed of a pair of conductive wires embedded in the bellows pipe. The electric vacuum cleaner according to 1.
JP00858398A 1998-01-20 1998-01-20 Vacuum cleaner Expired - Lifetime JP3777447B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP00858398A JP3777447B2 (en) 1998-01-20 1998-01-20 Vacuum cleaner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP00858398A JP3777447B2 (en) 1998-01-20 1998-01-20 Vacuum cleaner

Publications (2)

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JP3777447B2 true JP3777447B2 (en) 2006-05-24

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Publication number Priority date Publication date Assignee Title
KR20120057830A (en) * 2010-11-29 2012-06-07 광동하이텍 주식회사 Telescopic pipe of vacuum cleaner
JP2012143679A (en) * 2011-01-07 2012-08-02 Panasonic Corp Electrostatic atomization device
CN102727139B (en) * 2011-04-14 2014-12-17 科沃斯机器人有限公司 Telescopic tube for dust collector
US20210093141A1 (en) * 2016-11-09 2021-04-01 Sharp Kabushiki Kaisha Extension tube for electric vacuum cleaner
KR101973625B1 (en) * 2017-02-17 2019-04-29 엘지전자 주식회사 Robot cleaner
KR102065775B1 (en) * 2018-10-29 2020-01-13 은성전자 주식회사 Telescopic Pipe With A Built-in Wire
FR3088819B1 (en) 2018-11-22 2021-01-08 Seb Sa Vacuum duct for stick vacuum cleaner equipped with an electric wire
JP7154170B2 (en) * 2019-03-27 2022-10-17 シャープ株式会社 Vacuum cleaner extension tube and vacuum cleaner with the same

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