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JPH03170119A - Suction port body for vacuum cleaner - Google Patents

Suction port body for vacuum cleaner

Info

Publication number
JPH03170119A
JPH03170119A JP31161889A JP31161889A JPH03170119A JP H03170119 A JPH03170119 A JP H03170119A JP 31161889 A JP31161889 A JP 31161889A JP 31161889 A JP31161889 A JP 31161889A JP H03170119 A JPH03170119 A JP H03170119A
Authority
JP
Japan
Prior art keywords
suction port
vacuum
port body
degree
chamber
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.)
Granted
Application number
JP31161889A
Other languages
Japanese (ja)
Other versions
JPH0813297B2 (en
Inventor
Akihito Iwasa
岩佐 昭仁
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.)
Toshiba TEC Corp
Original Assignee
Tokyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tokyo Electric Co Ltd filed Critical Tokyo Electric Co Ltd
Priority to JP1311618A priority Critical patent/JPH0813297B2/en
Publication of JPH03170119A publication Critical patent/JPH03170119A/en
Publication of JPH0813297B2 publication Critical patent/JPH0813297B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Nozzles For Electric Vacuum Cleaners (AREA)

Abstract

PURPOSE:To stabilize suction force of a dust suction port and to enhance the running property by varying the inflow quantity of the open air to a suction port body, and stabilizing the degree of vacuum in the suction port body. CONSTITUTION:A suction port body has a front space being a rotary brush chamber 21 in which a rotary brush 11 is contained, and the upper part is covered with a cover body 30. The cover body 30 is provided with a vacuum degree adjusting chamber 31. For instance, in the case of cleaning on a carpet, dust, etc., are sucked from a dust suction port 22 by moving the suction port body 10. In such a case, when the suction port body 10 is in a state floating from the carpet, the dust suction port 22 is not closed up, and the degree of vacuum in the rotary brush chamber 21 does not become higher. Accordingly, a cut-off body 36 in the vacuum degree adjusting chamber 31 is energized by a coil spring 35 and positioned on the side of an air hole 32 and closes up the air hole 32, it does not occur that the open air flows into the rotary brush chamber 21. On the other hand, when the suction port body is in a state sinking in the carpet, the carpet is sucked in so as to close up the dust suction port 22, and the degree of vacuum in the rotary brush chamber 21 becomes high.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、電気掃除機の吸込口体に関するものである
. [従来の技術] 従来、電気掃除機の吸込口体には、吸込口体にリーク穴
等を設けることにより、吸込口体底面に備えられた吸m
口の床面等への吸い付力を弱めることができるものが知
られている. これは、電気掃除機の本体性能の向上に伴い、吸塵口の
吸い付力が高まったことに対応したものであり、絨包或
は畳の上で使用する場合、リーク穴等の風路を設けて外
気を吸込口体へと吸引し吸込口体内の真空度を低下させ
ることにより、吸込口体の吸い付力を弱め走行性低下を
防止している。
[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a suction port body for a vacuum cleaner. [Prior Art] Conventionally, in the suction port of a vacuum cleaner, a leak hole or the like is provided in the suction port so that a suction port provided on the bottom surface of the suction port is provided.
There are known products that can weaken the suction force on the floor of the mouth. This is in response to the fact that the suction power of the dust suction port has increased as the performance of the main body of the vacuum cleaner has improved, and when used on carpets or tatami mats, air channels such as leak holes should be closed. By sucking outside air into the suction port body and reducing the degree of vacuum within the suction port body, the suction force of the suction port body is weakened and a decrease in running performance is prevented.

このように、吸い付力を弱めるための対応としては、他
に、吸込口体前面に段差を設けたり、或は吸込口室の側
壁を切り変えることにより風路を確保したものがある. [発明が解決しようとする課題] しかしながら、吸込口体にリーク穴等による風路を設け
たとしても、風路内を流れる風量が常に一定であるため
吸い付力の変化に対応することができないという問題点
があった. つまり、より吸い付力の強い絨穏等においては、十分に
真空度を低下させることができず吸塵口にMa等が吸い
付いてしまうことから、走行性が悪く操作感が重くなっ
てしまう.また、吸い付力の弱い畳等においては、逆に
必要以上に真空度を低下させてしまい吸塵口の吸引力を
弱めることから、効率的に掃除をすることができなくな
ってしまう.この発明は上記問題点に鑑みてなされたも
のであり、その目的とするところは、吸込口体への外気
の流入量を変化させて吸込口体内の真空度を安定させる
ことにより、吸塵口の吸引力を安定させて走行性を高め
ることができる電気掃除機の吸込口体を提供することに
ある. [課題を解決するための手段] この発明は上記目的を達成するため、下面に吸塵口を備
える吸込口本体を設け、吸込口本体内の真空度の高低を
検知して外気導入用通路の開度が増減させられる可変バ
ルブを設け、可変バルブの一端を吸込口本体内部に連通
させ、且つ、可変バルブの他端を吸込口本体の床面から
離間した外表面に開口させたことを特徴としている.[
作用コ 上記構成により、掃除対象の吸い付力が強い場合は、可
変パルブを介して吸込口体の真空度を十分に低下させ、
吸込口本体の吸引力を減少させる.また、掃除対象の吸
い付力か弱い場合は、可変バルブを介して吸込口体の真
空度を必要以上に低下させず、吸込口本体の十分な吸引
力を確保する.[実施例] 以下、この発明に係る電気掃除機の吸込口体を図面に基
づいて説明する. 第1図〜第5図は、電気掃除機の吸込口体の一実施例を
示したものである. 第1図、第5図に示す電気掃除機の吸込口体10は、吸
塵口に回転ブラシ11が設けられた回転ブラシ付吸込口
体であり、吸込口本体20と吸込口本体20の後部に形
成された連通管12とを有している.吸込口本体20は
、回転ブラシ11が収納される回転ブラシ室21として
の前部空間を有しており、回転ブラシ室21の上部は、
吸込口本体20の前部を形成する蓋体3oにより覆われ
ている。
As described above, other measures to weaken the suction force include creating a step on the front of the suction port body or changing the side wall of the suction port chamber to secure an air path. [Problem to be solved by the invention] However, even if an air path is provided in the suction port body using a leak hole or the like, the amount of air flowing in the air path is always constant, so it cannot respond to changes in suction force. There was a problem. In other words, in environments where the suction force is stronger, such as on a damp surface, the degree of vacuum cannot be lowered sufficiently and Ma, etc., sticks to the dust suction port, resulting in poor running performance and a heavy operating feel. Furthermore, in the case of tatami mats, etc., which have weak suction power, the degree of vacuum is lowered more than necessary, which weakens the suction power of the dust suction port, making it impossible to clean efficiently. This invention was made in view of the above problems, and its purpose is to stabilize the degree of vacuum inside the suction port by changing the amount of outside air flowing into the suction port. An object of the present invention is to provide a suction port body for a vacuum cleaner that can stabilize suction force and improve running performance. [Means for Solving the Problems] In order to achieve the above object, the present invention provides a suction port body with a dust suction port on the lower surface, and detects the level of vacuum inside the suction port body to open an outside air introduction passage. A variable valve whose temperature can be increased or decreased is provided, one end of the variable valve communicates with the inside of the suction port body, and the other end of the variable valve is opened on the outer surface of the suction port body spaced apart from the floor surface. There is. [
Effect: With the above configuration, when the suction force of the object to be cleaned is strong, the degree of vacuum of the suction port body is sufficiently reduced through the variable valve,
Reduces the suction force of the suction port body. In addition, if the suction power of the object to be cleaned is weak, the vacuum level of the suction port body is not lowered more than necessary via the variable valve, and sufficient suction power of the suction port body is ensured. [Example] Hereinafter, a suction port body for a vacuum cleaner according to the present invention will be explained based on the drawings. Figures 1 to 5 show an example of a suction port body for a vacuum cleaner. The suction port body 10 of the vacuum cleaner shown in FIGS. 1 and 5 is a suction port body with a rotating brush in which a rotating brush 11 is provided at the dust suction port. It has a communicating pipe 12 formed therein. The suction port body 20 has a front space as a rotating brush chamber 21 in which the rotating brush 11 is housed, and the upper part of the rotating brush chamber 21 is
It is covered by a lid body 3o that forms the front part of the suction port body 20.

回転ブラシ室21の下面は、吸塵口22として開口され
ており、吸塵口22の後方には、連通管12の吸込口2
3が形成されている.吸込口23の両隣には、ベルト伝
達により回転ブラシ11を回転させるモー夕が収納され
たモータ室、及び回路室(共に図示せず)が設けられて
いる. 蓋体30は、第2図に示すように、裏面30a後端部に
、蓋体3o外表面301)を天井部とする真空度調整室
31を有している. 第3図に示す真空度調整室31は、一端側31a天井部
に、蓋体30後端部と平行に並ぶと共に蓋体30外表面
30bに開口する通気孔32が5個開けられており(第
1図参照)、他端側31b側面には、回転ブラシ室21
内へと開口する連過孔33が開けられている(第2図参
照).連通孔33の内側には、円筒部34が形成されて
おり、後述するコイルスプリング35の受け部とされて
いる.真空度調整室31内には、コイルスプリング35
を介して遮断体36が装着されている.コイルスプリン
グ35は、一端が円筒部34外周を取り巻くように固定
されており、他端は運断体36に当接している. 遮断体36は、第4図に示すように、両側面の下部が切
り落とされたT字状断面形状を有しており、真空度調整
室31の一端側31aに位置した状態で全ての通気孔3
2を防ぐことができる長さを有している.また、上面3
6aには、例えばゴム製のリブ37が周縁部全周に亙っ
て壁状に設けられており、真空度調整室31との密着性
を高めている.この遮断体36は、第3図(a)に示す
ように、コイルスプリング35により、常時、通気孔3
2側に付勢されている.また、コイルスプリング35の
弾発力に抗して連通孔33側に移動することができ(第
3図(b)参照)、最も連通孔33側に位置したときは
、全ての通気孔32が開口した状態となる(第3図(C
)参照).従って、遮断体36が連通孔33側へと移動
することにより、真空度調節室31内に、通気孔32か
ら遮断体36の両側面下部を通り連通孔33へと抜ける
風路が形或される. このように、真空度調整室31は、遮断体36がコイル
スプリング35の弾発力に抗して移動することにより、
開口する通気孔32の数が変化することから、風路内の
通風量を変化させることができる.つまり、回転ブラシ
室21内の真空度の高低を検知して外気導入口としての
通気孔32の開度が増減させられる可変バルブとしての
機能を有することとなり、通気孔32から回転ブラシ室
21内へと流入する空気量が変化することにより、回転
ブラシ室21内の真空度が変化する. 次に、上記構成を有する電気掃除機の吸込口体の作用を
説明する. 例えば絨は上を掃除する場合、吸込口体10を移動させ
て吸塵口22から塵等を吸い込む.このとき、吸込口体
10が絨穏から浮いた状態(例えば、掃除対象の吸い付
力か弱い場合)では、吸塵口22が塞がれることはなく
回転ブラシ室21内の真空度が高まることはない.従っ
て、真空度調整室31内の遮断体36は、コイルスプリ
ング35により付勢されて通気孔32側に位置して通気
孔32を塞ぎ(第3図(a)参照〉、回転ブラシ室21
へと外気が流入することはない. 一方、吸込口体10が絨侠に埋没するような状態(例え
ば、掃除対象の吸い付力が強い場合)では、吸塵口22
を塞ぐように絨穏が吸い込まれて回転ブラシ室21内の
真空度が高まることとなる.真空度が高まると、真空度
調整室31内の遮断体36は、コイルスプリング35の
弾発力に抗して連通孔33側に引き寄せられることとな
り、通気孔32を順次開放する(第3図(b),(C)
参照).開放された通気孔32から真空度調整室31内
へと流入した外気は、風路を介して回転ブラシ室21へ
と流入しく第3図(b),(C)の矢印参照)、回転ブ
ラシ室21内の真空度を下げる。そして、回転ブラシ室
21内の真空度が下がると、遮断体36を引き寄せる力
よりコイルスプリング35の付勢力が優り遮断体36の
移動が止まる.従って、回転ブラシ室21内の真空度の
変化に応じて真空度調整室31内の遮断体36の位置が
変化し(第3図(a).(b),(C)参照)、自動的
に通気孔32の開度が増減させられる. このように、回転ブラシ室21内の真空度の増減を検知
して外気の流入量を増減させることにより、吸塵口22
の吸引力を調整することができ、吸込口体10の走行性
を常に一定とすることができる.更に、吸込口体10の
真空度調整を、吸込口体10内に設けた真空度調整室3
1により行うことができることから、的確且つ効率的な
調整ができる.なお、通気孔32は、蓋体30に設ける
場合に限らず、吸込口体10の床面から離間した外表面
であれば同様の効果を得ることができる.加えて、通気
孔32の数を増減することにより、吸い付力の強弱に対
応させることができる. [効果] この発明は、以上説明したように、下面に吸塵口を備え
る吸込口本体を設け、吸込口本体内の真空度の高低を検
知して外気導入用通路の開度が増減させられる可変バル
ブを設け、可変バルブの一端を吸込口本体内部に連通さ
せ、且つ、可変バルブの他端を吸込口本体の床面から離
間した外表面に開口させたことを特徴としている. このため、掃除対象の吸い付力の状態に応じて、吸塵口
からの安定した吸引力を確保し、且つ、吸込口体走行時
の走行性を安定させることから、吸込口体の操作性を向
上させることができる.
The lower surface of the rotating brush chamber 21 is opened as a dust suction port 22, and behind the dust suction port 22 is the suction port 2 of the communication pipe 12.
3 is formed. On both sides of the suction port 23, a motor room housing a motor for rotating the rotary brush 11 by belt transmission and a circuit room (both not shown) are provided. As shown in FIG. 2, the lid 30 has a vacuum degree adjustment chamber 31 at the rear end of the back surface 30a, with the outer surface 301 of the lid 3o serving as a ceiling. The vacuum level adjustment chamber 31 shown in FIG. 3 has five ventilation holes 32 arranged in parallel with the rear end of the lid 30 and opening to the outer surface 30b of the lid 30 on the ceiling of one end 31a ( (see Fig. 1), the rotating brush chamber 21 is located on the side surface of the other end side 31b.
A continuous hole 33 opening inward is provided (see Figure 2). A cylindrical portion 34 is formed inside the communication hole 33, and serves as a receiving portion for a coil spring 35, which will be described later. Inside the vacuum degree adjustment chamber 31, a coil spring 35 is installed.
A blocking body 36 is attached via the. One end of the coil spring 35 is fixed so as to surround the outer periphery of the cylindrical portion 34, and the other end is in contact with the breaking member 36. As shown in FIG. 4, the blocking body 36 has a T-shaped cross-sectional shape with the lower portions of both sides cut off. 3
It has a length that can prevent 2. Also, the top surface 3
6a is provided with a wall-like rib 37 made of, for example, rubber, over the entire circumference of the periphery to improve the adhesion with the vacuum degree adjustment chamber 31. As shown in FIG. 3(a), this blocking body 36 is always connected to the ventilation hole 3 by a coil spring 35.
It is biased towards the 2nd side. In addition, it can move toward the communication hole 33 side against the elastic force of the coil spring 35 (see FIG. 3(b)), and when it is located closest to the communication hole 33 side, all the ventilation holes 32 are closed. It is in an open state (Fig. 3 (C)
)reference). Therefore, by moving the blocking body 36 toward the communicating hole 33 side, an air path is formed in the vacuum degree adjustment chamber 31 that passes from the ventilation hole 32 to the communicating hole 33 through the lower portions of both sides of the blocking body 36. Ru. In this way, the vacuum level adjustment chamber 31 is controlled by the blocking body 36 moving against the elastic force of the coil spring 35.
Since the number of open ventilation holes 32 changes, the amount of ventilation in the air passage can be changed. In other words, it functions as a variable valve that detects the degree of vacuum in the rotating brush chamber 21 and increases or decreases the opening degree of the vent hole 32 as an outside air introduction port. By changing the amount of air flowing into the rotating brush chamber 21, the degree of vacuum inside the rotating brush chamber 21 changes. Next, the operation of the suction port body of the vacuum cleaner having the above configuration will be explained. For example, when cleaning carpet, the suction port body 10 is moved to suck in dust etc. from the dust suction port 22. At this time, when the suction port body 10 is floating from the dust (for example, when the suction force of the object to be cleaned is weak), the dust suction port 22 is not blocked and the degree of vacuum in the rotating brush chamber 21 is not increased. do not have. Therefore, the shutoff body 36 in the vacuum level adjustment chamber 31 is biased by the coil spring 35 and is positioned on the side of the ventilation hole 32 to block the ventilation hole 32 (see FIG. 3(a)),
There is no outside air flowing into the room. On the other hand, in a state where the suction port body 10 is buried in the carpet (for example, when the suction force of the object to be cleaned is strong), the dust suction port 22
The vacuum inside the rotating brush chamber 21 increases as the carpet is sucked in so as to block it. When the degree of vacuum increases, the shutoff body 36 in the vacuum degree adjustment chamber 31 is drawn toward the communication hole 33 against the elastic force of the coil spring 35, and the ventilation holes 32 are sequentially opened (see FIG. 3). (b), (C)
reference). The outside air that has flowed into the vacuum level adjustment chamber 31 from the open ventilation hole 32 flows into the rotating brush chamber 21 via the air passage (see arrows in FIGS. 3(b) and 3(C)), and the rotating brush. The degree of vacuum in the chamber 21 is lowered. Then, when the degree of vacuum in the rotating brush chamber 21 decreases, the biasing force of the coil spring 35 becomes stronger than the force that pulls the blocking body 36, and the movement of the blocking body 36 is stopped. Therefore, the position of the shutoff body 36 in the vacuum degree adjustment chamber 31 changes according to the change in the degree of vacuum in the rotating brush chamber 21 (see FIGS. 3(a), (b), and (C)), and automatically The opening degree of the ventilation hole 32 is increased or decreased. In this way, by detecting an increase or decrease in the degree of vacuum in the rotating brush chamber 21 and increasing or decreasing the amount of outside air flowing in, the dust suction port 22
The suction force of the suction port body 10 can be adjusted, and the running performance of the suction port body 10 can be kept constant. Furthermore, the degree of vacuum of the suction port body 10 is adjusted by a vacuum degree adjustment chamber 3 provided inside the suction port body 10.
1, accurate and efficient adjustments can be made. Note that the vent hole 32 is not limited to being provided in the lid 30, and the same effect can be obtained as long as it is provided on the outer surface of the suction port body 10 that is spaced from the floor surface. In addition, by increasing or decreasing the number of ventilation holes 32, the strength of the suction force can be adjusted. [Effects] As described above, the present invention provides a suction port body with a dust suction port on the lower surface, and detects the level of vacuum inside the suction port body to increase or decrease the opening degree of the outside air introduction passage. It is characterized in that a valve is provided, one end of the variable valve communicates with the inside of the suction port body, and the other end of the variable valve opens on the outer surface of the suction port body spaced apart from the floor surface. Therefore, depending on the state of the suction force of the object to be cleaned, a stable suction force from the dust suction port is ensured, and the running performance of the suction port body is stabilized, so the operability of the suction port body is improved. It can be improved.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明に係る電気掃除機の吸込口体の斜視図
、第2図は蓋を裏面から見た斜視図、第3図は真空度調
節室内の遮断体を示しており、(a)は通気孔を全て塞
いだ状態の断面図、(b)は通気孔の一部を塞いだ状態
の断面図、(C)は通気孔を全て開放した状態の断面図
、第4図は遮断体の斜視図、第5図は回転ブラシが装着
された吸込口体内部の概略説明図である. 10・・・電気掃除機の吸込口体 2o・・・吸込口本体 22・・・吸塵口 30a・・・外表面 31・・・真空度調整室(可変バルブ)32・・・通気
孔 33・・・連通孔
FIG. 1 is a perspective view of the suction port body of the vacuum cleaner according to the present invention, FIG. 2 is a perspective view of the lid seen from the back, and FIG. ) is a cross-sectional view with all ventilation holes closed, (b) is a cross-sectional view with some ventilation holes closed, (C) is a cross-sectional view with all ventilation holes open, and Figure 4 is a cross-sectional view with all ventilation holes closed. A perspective view of the body, FIG. 5 is a schematic explanatory diagram of the inside of the suction port body to which a rotating brush is attached. 10... Vacuum cleaner suction port body 2o... Suction port body 22... Dust suction port 30a... Outer surface 31... Vacuum degree adjustment chamber (variable valve) 32... Ventilation hole 33.・Communication hole

Claims (1)

【特許請求の範囲】[Claims] 下面に吸塵口を備える吸込口本体を設け、該吸込口本体
内の真空度の高低を検知して外気導入用通路の開度が増
減させられる可変バルブを設け、該可変バルブの一端を
前記吸込口本体内部に連通させ、且つ、前記可変バルブ
の他端を前記吸込口本体の床面から離間した外表面に開
口させたことを特徴とする電気掃除機の吸込口体。
A suction port body is provided with a dust suction port on the lower surface, and a variable valve is provided that detects the degree of vacuum within the suction port body to increase or decrease the degree of opening of the outside air introduction passage, and one end of the variable valve is connected to the suction port. A suction spout body for a vacuum cleaner, characterized in that the variable valve communicates with the inside of the spout body, and the other end of the variable valve is opened at an outer surface of the suction mouth body spaced from a floor surface.
JP1311618A 1989-11-29 1989-11-29 Vacuum cleaner suction body Expired - Fee Related JPH0813297B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1311618A JPH0813297B2 (en) 1989-11-29 1989-11-29 Vacuum cleaner suction body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1311618A JPH0813297B2 (en) 1989-11-29 1989-11-29 Vacuum cleaner suction body

Publications (2)

Publication Number Publication Date
JPH03170119A true JPH03170119A (en) 1991-07-23
JPH0813297B2 JPH0813297B2 (en) 1996-02-14

Family

ID=18019422

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1311618A Expired - Fee Related JPH0813297B2 (en) 1989-11-29 1989-11-29 Vacuum cleaner suction body

Country Status (1)

Country Link
JP (1) JPH0813297B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013212331A (en) * 2012-04-04 2013-10-17 Mitsubishi Electric Corp Suction tool for vacuum cleaner and vacuum cleaner including the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102334946B (en) * 2010-07-27 2015-11-18 Wallstar株式会社 Catch the cleaner suction nozzle of acarid
CN102755137B (en) * 2011-04-25 2014-09-10 莱克电气股份有限公司 Dust collector ground brush with air-release valve

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61276526A (en) * 1985-05-31 1986-12-06 浦上 不可止 Suction nozzle
JPS62184847U (en) * 1986-05-15 1987-11-24

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61276526A (en) * 1985-05-31 1986-12-06 浦上 不可止 Suction nozzle
JPS62184847U (en) * 1986-05-15 1987-11-24

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013212331A (en) * 2012-04-04 2013-10-17 Mitsubishi Electric Corp Suction tool for vacuum cleaner and vacuum cleaner including the same

Also Published As

Publication number Publication date
JPH0813297B2 (en) 1996-02-14

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