JPH03264029A - Collected dust quantity displaying device for vacuum cleaner - Google Patents
Collected dust quantity displaying device for vacuum cleanerInfo
- Publication number
- JPH03264029A JPH03264029A JP6318990A JP6318990A JPH03264029A JP H03264029 A JPH03264029 A JP H03264029A JP 6318990 A JP6318990 A JP 6318990A JP 6318990 A JP6318990 A JP 6318990A JP H03264029 A JPH03264029 A JP H03264029A
- Authority
- JP
- Japan
- Prior art keywords
- pointer
- valve
- valve body
- atmospheric pressure
- dust collection
- 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
Links
- 239000000428 dust Substances 0.000 title claims abstract description 67
- 238000006073 displacement reaction Methods 0.000 abstract description 15
- 230000002093 peripheral effect Effects 0.000 abstract description 7
- 238000012790 confirmation Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Filters For Electric Vacuum Cleaners (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は電気掃除機の集塵量表示装置に関する。[Detailed description of the invention] Industrial applications The present invention relates to a dust collection amount display device for a vacuum cleaner.
従来、の技術
近年、電気掃除機は集塵性能が向上し、集塵量表示装置
の精度を向上についての要望が高まってきている。BACKGROUND ART In recent years, the dust collection performance of vacuum cleaners has improved, and there has been an increasing demand for improved accuracy of dust collection amount display devices.
従来、この種の電気掃除機の集塵量表示装置は、第９図
および第１０図に示すような構成が一般的であった。以
下、その構成について説明する。Conventionally, the dust collection amount display device of this type of vacuum cleaner has generally had a configuration as shown in FIGS. 9 and 10. The configuration will be explained below.
図に示すように、表示装置２６は指針２７とこれを後方
にばね付勢する指針ばね２８と、指針２７の背後に位置
して通孔２９を有する指針蓋３ｏと、これらを保持する
透明で円筒形の指針筒３１と、指針筒３１の先端と集塵
室３２を連通する連通管３３とからなシ、電気掃除機本
体３４の集腰室３２を上方よりおおう前本体３６の凹部
３６に取着されて連通管３３が集塵室３２に連通し、ま
た蓋板３７に設けられた表示窓３８より指針２７が外部
より見えるよう構成されていた。また、凸リブ３９は指
針２７の振れ防止のために指針２７の外周に形成したも
のである。As shown in the figure, the display device 26 includes a pointer 27, a pointer spring 28 that biases the pointer backward, a pointer cover 3o located behind the pointer 27 and having a through hole 29, and a transparent cover 3o that holds these. The cylindrical pointer tube 31 and the communication pipe 33 that communicates the tip of the pointer tube 31 with the dust collection chamber 32 are connected to the recess 36 of the front body 36 that covers the dust collection chamber 32 of the vacuum cleaner body 34 from above. When attached, the communication pipe 33 communicates with the dust collection chamber 32, and the pointer 27 is configured to be visible from the outside through a display window 38 provided in the cover plate 37. Further, the convex rib 39 is formed on the outer periphery of the pointer 27 to prevent the pointer 27 from wobbling.
電気掃除機本体３４を使用して集塵袋４ｏ内に塵埃が蓄
積してくると、集塵室３２内の圧力が徐々に大気圧より
低下し、所定圧力よりさらに下がると指針２７に作用す
る真空圧により、指針ばね−２８のばね付勢力に抗がっ
て指針２７が連通管お側に移動する。このとき、表示窓
３８より見える指針２７の位置が変わシ、使用者が塵埃
の廃棄時をｇＲできるものである。When the vacuum cleaner body 34 is used and dust accumulates in the dust collection bag 4o, the pressure inside the dust collection chamber 32 gradually decreases below atmospheric pressure, and when the pressure falls further below a predetermined pressure, it acts on the pointer 27. Due to the vacuum pressure, the pointer 27 moves toward the side of the communication tube against the spring biasing force of the pointer spring 28. At this time, the position of the pointer 27 visible through the display window 38 changes, allowing the user to know when to dispose of the dust.
発明が解決しようとする課題
このような従来の電気掃除機の集塵量表示装置では、指
針２７が連通管３３側に少しでも変位したときには通孔
２９を通じて大気が集塵室３２内に流入するため、電気
掃除機の本来の吸込口からの吸込力が低下してしまう。Problems to be Solved by the Invention In such a conventional vacuum cleaner dust collection amount display device, when the pointer 27 is even slightly displaced toward the communication pipe 33, air flows into the dust collection chamber 32 through the through hole 29. Therefore, the suction power from the vacuum cleaner's original suction port is reduced.
そこで塵埃が集塵袋４ｏ内にほぼ一杯に蓄積した時点で
指針２７が変位するように、指針２７の変位開始圧力を
設定せざるをえなくなり、指針２７が塵埃の蓄積量に比
例した変位をしないという欠点を有していた。とくに塵
埃が繊維質主体のものであると、集塵袋４゜内に一杯に
なっても集塵室３２内の圧力が所定圧力以下にならず、
指針２７が変位しないために使用をつづけて集塵袋４ｏ
が破裂したシ、電気掃除機本体３４に接続したホース内
部にまで塵埃を蓄積してしまうという問題を発生させて
いた。また、指針２７の振れ防止用の凸リブ３９が外観
にあられれ、見栄えを悪くｔでいた。Therefore, it is necessary to set the displacement start pressure of the pointer 27 so that the pointer 27 is displaced when the dust is almost completely accumulated in the dust collection bag 4o, and the pointer 27 is displaced in proportion to the amount of accumulated dust. It had the disadvantage that it did not. In particular, if the dust is mainly fibrous, the pressure inside the dust collection chamber 32 will not drop below the predetermined pressure even if the dust collection bag 4° is full.
To prevent the pointer 27 from displacing, continue using the dust collection bag 4o.
When the vacuum cleaner ruptures, a problem arises in that dust accumulates inside the hose connected to the vacuum cleaner main body 34. In addition, the convex rib 39 for preventing the pointer 27 from swinging appeared on the outside, resulting in a poor appearance.
本発明は上記課題を解決するもので、指針が連通管側に
変位しても空気の洩れ、すなわち吸込力の低下を生じる
ことなく、塵埃の蓄積量にほぼ比例して指針を変位でき
るようにすることを第１の目的としている。また、指針
の移動量を大きくして見やすく、使い勝手を向上するこ
とを第２の目的としている。さらに、弁体に外力が加わ
るのを防止して弁体の破損を防止し、しかも弁体をスム
ースに動かすようにすることを第３の目的としている。The present invention solves the above problem, and allows the pointer to be displaced approximately in proportion to the amount of accumulated dust without causing air leakage, that is, a decrease in suction force even if the pointer is displaced toward the communication pipe side. The primary purpose is to do so. A second purpose is to increase the amount of movement of the pointer to make it easier to see and to improve usability. Furthermore, a third purpose is to prevent damage to the valve body by preventing external force from being applied to the valve body, and to allow the valve body to move smoothly.
また、指針の振れを防止し、かつ見栄えをよくすること
を第４の目的としている。The fourth purpose is to prevent the pointer from wobbling and to improve its appearance.
課題を解決するための手段
本発明は上記第１の目的を達成するために、電動送風機
の運転で発生する真空圧部と大気圧部とを遮断しかつこ
の差圧で変位する弁体と、この弁体に接続されて変位す
る指針と、この指針を所定の真空圧下で変位するように
大気側へばね付勢する指針ばねと、前記指針を内部に有
する略透明筒体の指針筒と、前記真空圧部と指針筒とを
気密に接続する連通筒と、前記弁体を指針筒に気密に取
着する指針蓋とを具備し、前記弁体は指針に対して大気
圧側に配置し、前記指針は略中央部が大気圧側に突出し
た内周筒を有し、この内周筒を覆うように指針筒の弁取
付座より内壁を指針側に突出させたことを第１の課題解
決手段としている。また、第２の目的を達成するために
、上記第１の課題解決手段に加えて、弁体は略帽子状の
凸部を有し、この略帽子状の凸部は指針の内周筒を覆う
ように大気圧側へ突出し、この略帽子状の凸部の外径は
指針筒の内壁の内径よりも小さくしたことをて、指針蓋
は弁体の帽子状の凸部を覆うように大気圧側に円筒リブ
を配設したことを第３の課題解決手段としている。また
、第４の目的を達成するために、上記第１の課題解決手
段に加えて、指針は内部筒外周に軸方向に複数のリブを
突出させたことを第４の課題解決手段としている。Means for Solving the Problems In order to achieve the above-mentioned first object, the present invention provides a valve body that shuts off a vacuum pressure section generated during operation of an electric blower and an atmospheric pressure section and is displaced by this differential pressure; a pointer connected to the valve body to be displaced; a pointer spring biasing the pointer toward the atmosphere so as to be displaced under a predetermined vacuum pressure; and a pointer barrel having a substantially transparent cylindrical body having the pointer inside; A communication tube airtightly connects the vacuum pressure section and the pointer tube, and a pointer cover airtightly attaches the valve body to the pointer tube, and the valve body is arranged on the atmospheric pressure side with respect to the pointer. The first problem is that the pointer has an inner circumferential tube whose approximately central portion protrudes toward the atmospheric pressure side, and the inner wall protrudes toward the pointer side from the valve mounting seat of the pointer tube so as to cover this inner circumferential tube. It is used as a solution. Furthermore, in order to achieve the second object, in addition to the first problem-solving means, the valve body has a substantially cap-shaped protrusion, and this substantially cap-shaped protrusion extends around the inner circumferential cylinder of the pointer. The outer diameter of this approximately cap-shaped protrusion is smaller than the inner diameter of the inner wall of the pointer tube, and the pointer cover is large enough to cover the cap-shaped protrusion of the valve body. The third means of solving the problem is that a cylindrical rib is provided on the pressure side. Further, in order to achieve the fourth object, in addition to the first problem-solving means described above, the pointer has a plurality of ribs protruding in the axial direction from the outer periphery of the inner cylinder as a fourth problem-solving means.
作 用
本発明は上記した第１の課題解決手段により、集塵室側
の真空圧部と大気圧部とを弁体で遮断し、弁体の変位に
応じて指針が変位しても空気の洩れ、すなわち吸込力低
下が生じることがない。したがって、弁体の変位開始圧
力を従来より大気圧に近づけ、塵埃の蓄積量にほぼ比例
して指針を変位できる。また、指針の大気圧側へ突出し
た内周筒を覆うように配設した指針筒の内壁を指針側に
突出させることにより、内壁が指針の動作時におけるガ
イドになるとともにがたつき防止ができ、指針のスムー
スな動作が得られる。また、第２の課題解決手段により
、弁体の略帽子状の凸部により弁体の変位を大きく、す
なわち、指針の移動量を大きくでき、しかも、弁体はス
ムーズに変位することができる。Effects The present invention uses the above-mentioned first problem-solving means to isolate the vacuum pressure part and the atmospheric pressure part on the dust collection chamber side by the valve body, and even if the pointer is displaced in accordance with the displacement of the valve body, the air does not flow. No leakage or reduction in suction force occurs. Therefore, the displacement start pressure of the valve body can be brought closer to atmospheric pressure than in the past, and the pointer can be displaced approximately in proportion to the amount of accumulated dust. In addition, by making the inner wall of the pointer tube protrude toward the pointer side, which covers the inner circumferential tube of the pointer that protrudes toward the atmospheric pressure side, the inner wall serves as a guide when the pointer operates and prevents it from rattling. , smooth movement of the pointer can be obtained. Further, according to the second problem-solving means, the displacement of the valve body can be increased by the substantially cap-shaped convex portion of the valve body, that is, the amount of movement of the pointer can be increased, and the valve body can be smoothly displaced.
さらに、第３の課題解決手段により、円筒リブは弁体の
帽子状凸部が変位する際のガイドとなシ、スムースに変
位できるとともに、帽子状凸部が変形するなど動作不良
を防止できる。また、弁体の外部からの力による変形や
破れ、傷付きを防止できる。また、第４の課題解決手段
により、指針のがたを防止でき、指針外周に形成してい
たリブを廃止することができ、見栄えを良くすることが
できる。Furthermore, according to the third problem-solving means, the cylindrical rib serves as a guide when the cap-shaped protrusion of the valve body is displaced, and can be smoothly displaced, and malfunctions such as deformation of the cap-shaped protrusion can be prevented. Further, it is possible to prevent deformation, tearing, and damage of the valve body due to external forces. Furthermore, the fourth problem-solving means can prevent the pointer from wobbling, eliminate the ribs formed on the outer periphery of the pointer, and improve the appearance.
実施節
以下、本発明の第１の実施例を第１図から第３図を参照
しながら説明する。Embodiment Section A first embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
図に示すように、電気掃除機本体１は前方に床用吸込具
、延長筒、ホースを通じて吸い込んだ塵埃を濾過、集塵
する紙袋２を収容する集塵室３を有し、後方には電動送
風機４やコード巻取装置を内蔵している。集塵室３の上
方には上蓋６が取υ付けられて集塵室３を開閉自在にお
おっている。As shown in the figure, the vacuum cleaner body 1 has a dust collection chamber 3 in the front that houses a paper bag 2 that filters and collects dust sucked in through a floor suction device, an extension tube, and a hose, and a dust collection chamber 3 in the rear that houses a paper bag 2 that filters and collects dust sucked in through a floor suction tool, an extension tube, and a hose. It has a built-in blower 4 and cord winding device. An upper lid 6 is attached above the dust collection chamber 3 to cover the dust collection chamber 3 so as to be openable and closable.
上蓋６は後部が上本体６に係合し、前部は尾錠７の作用
で電気掃除機１に取着され、また上部中央には凹部８が
形成されて集塵量表示装置９が取シ付けられている。The rear part of the upper cover 6 engages with the upper main body 6, and the front part is attached to the vacuum cleaner 1 by means of a buckle 7, and a recess 8 is formed in the center of the upper part so that a dust collection amount display device 9 can be attached to the vacuum cleaner 1. It is attached.
集塵量表示装置９は、透明に形成された指針筒１０と、
この指針筒１ｏ内で一体で摺動する緑色の第１の指針１
１と赤色の第２の指針１２．集塵室１３と指針筒１ｏを
連通する連通管１３．連通管１３と第１の指針１１間に
配設され第１の指針１１と第２の指針１２を連通管１３
とは逆方向にばね付勢する指針ばね１４と、指針筒１０
と指針蓋１６に挟持されて第２の指針１２側と指針蓋１
５側とを気密に遮断し弾性を有する薄膜で形成した弁体
としての指針弁１６とで構成している。なお、第１の指
針１１と第２の指針１２とで指針を形成している。指針
筒１ｏの指針蓋１６取着側内部には、指針筒１ｏの弁取
付座より二重筒状に内壁１７を形成し、この内壁１７の
連通管１３側先端で第２の指針１２の位置が規制されて
いる。第１の指針１１と第２の指針１２は互いに凹凸嵌
合で結合している。第２の指針１２は略円筒の外周壁１
８と内周壁１９からなシ、内周筒１９は大気圧側に突出
し、内壁１７内に位置している。指針蓋１５は指針弁１
６の外周を押さえ、指針筒１ｏに固着している。また、
指針蓋１６の中央は開口していて電気掃除機本体１外部
と連通し、連通管１３の一端は凹部８の下面に設は九通
孔２ｏに挿着されて集塵室３と連通しているため、指針
弁１６の指針蓋１５側には大気圧が作用し、第２の指針
１２側には電動送風機４の運転によって生じる真空圧が
作用する。The dust collection amount display device 9 includes a pointer tube 10 formed transparently,
A green first pointer 1 that slides integrally within this pointer tube 1o
1 and the red second pointer 12. A communication pipe 13 that communicates the dust collection chamber 13 and the pointer barrel 1o. It is arranged between the communication pipe 13 and the first pointer 11, and the first pointer 11 and the second pointer 12 are connected to the communication pipe 13.
A pointer spring 14 that is biased in a direction opposite to that of the pointer spring 14 and a pointer barrel 10
The second pointer 12 side and the pointer cover 1 are sandwiched between the pointer cover 16 and the second pointer 12 side.
5 side and a pointer valve 16 as a valve body formed of an elastic thin film. Note that the first pointer 11 and the second pointer 12 form a pointer. Inside the pointer cover 16 attachment side of the pointer tube 1o, an inner wall 17 is formed in a double cylindrical shape from the valve attachment seat of the pointer tube 1o, and the position of the second pointer 12 is formed at the tip of this inner wall 17 on the communication tube 13 side. is regulated. The first pointer 11 and the second pointer 12 are coupled to each other by a concave-convex fit. The second pointer 12 has a substantially cylindrical outer peripheral wall 1
8 and the inner circumferential wall 19, the inner circumferential cylinder 19 protrudes toward the atmospheric pressure side and is located within the inner wall 17. The pointer lid 15 is the pointer valve 1
6 and is fixed to the pointer barrel 1o. Also,
The center of the pointer cover 16 is open and communicates with the outside of the vacuum cleaner main body 1, and one end of the communication pipe 13 is inserted into the nine through hole 2o on the lower surface of the recess 8 and communicates with the dust collection chamber 3. Therefore, atmospheric pressure acts on the pointer lid 15 side of the pointer valve 16, and vacuum pressure generated by the operation of the electric blower 4 acts on the second pointer 12 side.
指針弁１６は指針筒１ｏの内壁１７に作用する上記の圧
力差による集塵室３内方向への吸込力と、指針ばね１４
のばね付勢力とを受けて、第２の指針１２を内壁１７内
で連通管１３側に変位させている。蓋体２１は指針筒１
ｏの上方に表示窓孔２２を有し、凹部８に嵌着されてい
る。電動送風機４の非運転時には表示窓孔２２から第１
の指針１１が見える。The pointer valve 16 is operated by the suction force toward the inside of the dust collection chamber 3 due to the above-mentioned pressure difference acting on the inner wall 17 of the pointer barrel 1o, and by the pointer spring 14.
The second pointer 12 is displaced within the inner wall 17 toward the communication tube 13 under the force of the spring. The lid body 21 is the pointer barrel 1
It has a display window hole 22 above o and is fitted into the recess 8. When the electric blower 4 is not operating, the first
You can see the guideline 11.
つぎに、上記構成において動作を説明する。電気掃除機
本体１を使用して紙袋２内に塵埃が蓄積してくると、電
動送風機４に流入する空気流量が低下し、集塵室３内の
圧力が徐々に大気圧より下がる。集塵蓄積量が増大して
この真空圧が所定圧力より低くなると、指針筒１ｏの内
壁１Ｔ内に作用する大気圧との差圧で、指針弁１６を連
通管１３側に吸い寄せる吸込力が指針ばね１４のばね付
勢力より大きくなる。このとき、指針弁１６は第２の指
針１２の内周筒１９に触れる部分が内周筒１９と内壁１
７間で、連通管１３側に断面略Ｕ字状に変形し、同時に
第１の指針１１と第２の指針１２が連通管１３側に少し
変位する。Next, the operation in the above configuration will be explained. When dust accumulates in the paper bag 2 using the vacuum cleaner main body 1, the flow rate of air flowing into the electric blower 4 decreases, and the pressure in the dust collection chamber 3 gradually decreases below atmospheric pressure. When the amount of accumulated dust increases and this vacuum pressure becomes lower than a predetermined pressure, the suction force that draws the pointer valve 16 toward the communication pipe 13 is generated due to the differential pressure between the atmospheric pressure and the inner wall 1T of the pointer tube 1o. This is larger than the spring biasing force of the pointer spring 14. At this time, the pointer valve 16 has a portion that touches the inner cylinder 19 of the second pointer 12 that is connected to the inner cylinder 19 and the inner wall 1.
7, it deforms into a substantially U-shaped cross section toward the communicating tube 13, and at the same time, the first pointer 11 and the second pointer 12 are slightly displaced toward the communicating tube 13.
塵埃の蓄積が進むに連れて吸込力が大きくなると、指針
弁１６の略Ｕ字状の変形量が徐々に増大し、第１の指針
１１．第２の指針１２を徐々に連通管１３側に移動させ
る。このとき、表示窓孔２２からは緑色の第１の指針１
１と赤色の第２の指針１２が同時に見える。塵埃量が所
定以上になると、第１の指針１１と第２の指針１２の変
位量が最大になシ、表示窓孔２２からは赤色の第２の指
針１２のみが見え、使用者に塵埃の廃棄時期を知らせ、
紙袋２を新しいものと交換して強い吸い込み状態で再使
用し始めることとなる。As the suction force increases as the accumulation of dust progresses, the amount of approximately U-shaped deformation of the pointer valve 16 gradually increases, causing the first pointer 11. The second pointer 12 is gradually moved toward the communication tube 13. At this time, the green first pointer 1 is visible from the display window hole 22.
1 and the red second pointer 12 are visible at the same time. When the amount of dust exceeds a predetermined level, the displacement amount of the first pointer 11 and second pointer 12 will reach its maximum, and only the red second pointer 12 will be visible from the display window hole 22, and the user will be informed of the dust. Notify when it is time to dispose of
The paper bag 2 is replaced with a new one and reuse begins with strong suction.
ところで、指針弁１６は指針筒１ｏと指針蓋１５に挟持
されて第２の指針１２側の真空圧部と指針蓋１５側の大
気圧部とを完全に遮断しているため、指針弁１６．第１
の指針１１および第２の指針１２が変位しても指針筒１
ｏを通じて集塵室ａ内への大気の流入が起こらず、した
がって無駄な吸込力の低下が発生しない。また上記の吸
込力の低下が発生しないため、指針ばね１４の初期状態
でのばね付勢力を小さくし、真空圧の低い状態から徐々
に指針弁１６を変位させることができ、表示窓孔２２内
での第１の指針１１と第２の指針１２の変位移動を圧力
の低下にほぼ比例させて徐々に行なわせることができ、
使用者に塵埃蓄積量を従来より精度良く認識させること
ができる。そしてこの結果、繊維質塵埃主体の塵埃を吸
い込んだときでも、第１の指針１１と第２の指針１２を
使用者に紙袋２の交換を促す変位範囲内に確実に変位さ
せることができ、塵埃で一杯になった紙袋２の繊維使用
による破裂などの不具合を防止できるものである。さら
に、指針弁１６は第２の指針１２に対して大気圧側に位
置しているため、電動送風機４の運転時には指針弁１６
と第２の指針１２の内周筒１９の指針弁１６側端面とは
密着する。このため、真空圧差により指針弁１６に作用
し、指針弁１６を連通管１３方向に吸い寄せる吸込力の
大部分を内周Ｗｉ１９の指針弁１ｅ側端面（剛体部分）
で支えることとなシ、指針弁１６の変位部分にはわずか
な力しか加わらず、指針弁１６の耐久性を劣化させるこ
とがない。また、空気の流れがないため、指針筒１０内
に塵埃が吸い寄せられて付着し、第１の指針１１および
第２の指針１２の指針筒１Ｑ内での摺動不良を発生させ
たり、指針筒１０内面を汚して第１の指針１１および第
２の指針１２を見にくくしたり、指針弁１６を損傷させ
ることもない。さらに第１の指針１１．第２の指針１２
および指針弁１６の変位は、内壁１７内に作用する差圧
力と指針ばね１４のばね付勢力でのみ決まるため、指針
ばね１４のばね荷重を容易に決めることができる。By the way, since the pointer valve 16 is sandwiched between the pointer barrel 1o and the pointer cover 15 and completely blocks off the vacuum pressure section on the second pointer 12 side and the atmospheric pressure section on the pointer cover 15 side, the pointer valve 16. 1st
Even if the second pointer 11 and the second pointer 12 are displaced, the pointer barrel 1
Atmospheric air does not flow into the dust collecting chamber a through the dust collecting chamber a, so that no unnecessary reduction in suction power occurs. Furthermore, since the above-mentioned reduction in suction force does not occur, the spring biasing force of the pointer spring 14 in its initial state can be reduced, and the pointer valve 16 can be gradually displaced from a state of low vacuum pressure. The displacement movement of the first pointer 11 and the second pointer 12 can be carried out gradually in approximately proportion to the decrease in pressure,
The user can recognize the amount of accumulated dust more accurately than before. As a result, even when dust mainly consisting of fibrous dust is inhaled, the first pointer 11 and the second pointer 12 can be reliably displaced within the displacement range that prompts the user to replace the paper bag 2, and the dust This can prevent problems such as bursting due to the use of fibers in the paper bag 2 when it is full. Further, since the pointer valve 16 is located on the atmospheric pressure side with respect to the second pointer 12, when the electric blower 4 is operated, the pointer valve 16
and the end surface of the inner cylinder 19 of the second pointer 12 on the pointer valve 16 side are in close contact. Therefore, most of the suction force that acts on the pointer valve 16 due to the vacuum pressure difference and draws the pointer valve 16 toward the communication pipe 13 is transferred to the pointer valve 1e side end surface (rigid body portion) of the inner circumference Wi19.
By supporting the pointer valve 16, only a small force is applied to the displaced portion of the pointer valve 16, and the durability of the pointer valve 16 is not deteriorated. In addition, since there is no air flow, dust is attracted and adheres to the inside of the pointer tube 10, which may cause sliding failure of the first pointer 11 and second pointer 12 within the pointer tube 1Q, or The inner surface of the first pointer 11 and the second pointer 12 will not become difficult to see, nor will the pointer valve 16 be damaged. Furthermore, the first guideline 11. Second guideline 12
Since the displacement of the pointer valve 16 is determined only by the differential pressure acting within the inner wall 17 and the spring biasing force of the pointer spring 14, the spring load of the pointer spring 14 can be easily determined.
つぎに、本発明の第２の実施例について第４図および第
６図を参照しながら説明する。なお、上記第１の実施例
と同じ構成のものは同一符号を付して説明を省略する。Next, a second embodiment of the present invention will be described with reference to FIGS. 4 and 6. Components having the same configuration as those in the first embodiment are given the same reference numerals and explanations will be omitted.
図に示すように、指針弁１６は略中央部を第２の指針１
２の内周筒１９をおおうように略帽子状の凸部２３を有
しておシ、この略帽子状の凸部２３の外径は指針ＷＪ１
ｏの内壁１７の内径より小さくしている。この場合の動
作については、上記第１の実施例と同様であるが１．略
帽子状の凸部２３の突出寸法を大きくすることにより、
第２の指針１２のストロークが大きくとれて見易くなシ
、使用性の向上がはかれるものである。As shown in the figure, the pointer valve 16 has a substantially central portion connected to the second pointer 1.
It has a substantially cap-shaped protrusion 23 so as to cover the inner circumferential cylinder 19 of No.
The inner diameter of the inner wall 17 is smaller than that of the inner wall 17 of The operation in this case is the same as in the first embodiment, but 1. By increasing the protrusion dimension of the approximately hat-shaped convex portion 23,
The second pointer 12 has a large stroke, making it easy to see and improving usability.
つぎに、本発明の第３の実施例を第６図および第７図を
参照しながら説明する。なお、上記第２の実施例と同じ
構成のものは同一符号を付して説明を省略する。Next, a third embodiment of the present invention will be described with reference to FIGS. 6 and 7. Components having the same configuration as those in the second embodiment are given the same reference numerals and explanations will be omitted.
図に示すように、指針蓋１ｓは指針弁１ｅの略帽子状の
凸部２３をおおうように大気圧側に円筒リブ２４を配設
している。この場合の動作については、上記第２の実施
例とほぼ同様であるが、略帽子状の凸部２３の外径より
も大きい内径を有する内壁１７と円筒リブ２４とをそれ
ぞれ指針弁１６の第２の指針１２側と大気圧側とに配設
されておシ、指針弁１６の略帽子状の凸部２３の動作、
復帰時での変位をガイドし、動作、復帰がヌムースに行
えるものである。また、指針弁１６は薄膜で形成されて
いるため、外方に非常に弱いが円筒リブ２４が周囲をお
おっているため、保護機能もはたすものである。As shown in the figure, the pointer lid 1s is provided with a cylindrical rib 24 on the atmospheric pressure side so as to cover the substantially cap-shaped protrusion 23 of the pointer valve 1e. The operation in this case is almost the same as that of the second embodiment, but the inner wall 17 and the cylindrical rib 24, each having an inner diameter larger than the outer diameter of the substantially hat-shaped convex portion 23, are 2, the operation of the approximately hat-shaped convex portion 23 of the pointer valve 16, which is disposed on the pointer 12 side and the atmospheric pressure side;
It guides the displacement at the time of return, allowing smooth movement and return. Further, since the pointer valve 16 is formed of a thin film, it is very weak outwardly, but since the cylindrical rib 24 covers the periphery, it also performs a protective function.
つぎに、本発明の第４の実施例について第８図を参照し
ながら説明する。なお、第１の実施例と同じ構成のもの
は同一符号を付して説明を省略する。Next, a fourth embodiment of the present invention will be described with reference to FIG. Components having the same configuration as those in the first embodiment are designated by the same reference numerals, and description thereof will be omitted.
図に示すように、第２の指針１２は円周ｗ１１９の外周
の軸方向に複数本のリブ２５を突出させている。この場
合の動作は、リブ２５が内壁１Ｔの内面とわずかのクリ
アランスを形成しており、第２の指針１２が少しでもが
たつくと、リブ２６が内壁１７の内面にあたり、これ以
上は振れなくなる。つまシ、従来指針の外周に形成して
いたがた止め用のリブを円周筒１９の外周に形成するこ
とにより、リブ２６が外観に出す、見栄えの良い集塵量
表示装置を提供するものである。また、円周筒１９の外
周と内壁１７の内面とのクリアランスを充分とることが
可能となシ、指針弁１６の変位面積を大きくとれ、スム
ースな動作が可能となるものである。As shown in the figure, the second pointer 12 has a plurality of ribs 25 protruding in the axial direction of the outer circumference of the circumference w119. In this case, the rib 25 forms a slight clearance with the inner surface of the inner wall 1T, and if the second pointer 12 shakes even a little, the rib 26 hits the inner surface of the inner wall 17, and it cannot swing any further. By forming a rib for preventing rattling, which was conventionally formed on the outer periphery of the pointer, on the outer periphery of the circumferential tube 19, the rib 26 is made visible to provide a good-looking dust collection amount display device. It is. Furthermore, it is possible to provide a sufficient clearance between the outer periphery of the circumferential cylinder 19 and the inner surface of the inner wall 17, and the displacement area of the pointer valve 16 can be increased, allowing smooth operation.
発明の効果
以上の実施例から明らかなように本発明によれば、電動
送風機の運転で発生する真空圧部と大気圧部とを遮断し
かつこの差圧で変位する弁体の変空圧下で変位するよう
大気圧側にばね付勢する指針ばねと、指針を内部に有す
る略透明筒体の指針筒と、前記真空圧部と指針筒とを気
密に接続する連通管と、弁体と指針筒に気密に取着する
指針蓋とを備え、弁体は指針に対して大気圧側に配設す
ることによって、弁体の変位に応じて指針が変位しても
空気の洩れ、すなわち吸込力低下を生じることがなく、
シたがって、弁体の変位開始圧力を従来より大気圧に近
づけて塵埃の蓄積量にほぼ比例して指針を変位でき、さ
らに、指針は略中央部が大気圧側に突出する内周筒を有
し、この内周筒を覆うように指針筒の弁取付座より内壁
を指針側に突出しているので、内壁が弁体変位時のガイ
ドとなシ、弁体をスムースに変位させることができる。Effects of the Invention As is clear from the above embodiments, according to the present invention, the vacuum pressure section generated during operation of an electric blower and the atmospheric pressure section are cut off, and the valve body is displaced by the differential pressure under variable air pressure. A pointer spring biased toward the atmospheric pressure side to be displaced; a pointer tube that is a substantially transparent cylindrical body having a pointer inside; a communication pipe that airtightly connects the vacuum pressure section and the pointer tube; a valve body and the pointer. It is equipped with a pointer cover that is airtightly attached to the cylinder, and the valve body is placed on the atmospheric pressure side with respect to the pointer, so that even if the pointer is displaced in accordance with the displacement of the valve body, air leakage, that is, suction force is prevented. without causing any deterioration;
Therefore, the displacement start pressure of the valve body can be brought closer to atmospheric pressure than before, and the pointer can be displaced approximately in proportion to the amount of accumulated dust.Furthermore, the pointer has an inner circumferential cylinder whose approximately central portion protrudes toward the atmospheric pressure side. The inner wall protrudes toward the pointer side from the valve mounting seat of the pointer tube so as to cover this inner cylinder, so the inner wall acts as a guide when the valve body is displaced, and the valve body can be smoothly displaced. .
また、弁体の略中央部を略帽子状に突出させているので
、指針の移動量を大きくでき、見やすく、使い勝手がよ
い集塵量表示装置が得られる。In addition, since the substantially central portion of the valve body protrudes in a substantially cap-like shape, the amount of movement of the pointer can be increased, and a dust collection amount display device that is easy to see and use can be obtained.
さらに、弁体の略帽子状の凸部をおおうように指針蓋か
ら円筒リブを形成しているので、弁体に外を防止できる
とともに、弁体の両側に円筒リブを第１０図は同集塵量
表示装置を具備した電気掃除配置−することにより略帽
子状の凸部の動作、復帰時での変位をガイドし、スムー
スな動きができ、動作不良を防止できる。また、指針の
内周筒外周の軸方向にリブを配設しているので、指針の
がた（振れ）止めができ、かつ外観に出ないため見栄え
がよい集塵量表示装置を提供できる。In addition, cylindrical ribs are formed from the pointer cover to cover the approximately cap-shaped convex portion of the valve body, so that it is possible to prevent the valve body from leaking. By arranging a vacuum cleaner equipped with a dust amount display device, the operation of the approximately hat-shaped convex portion and its displacement upon return are guided, smooth movement is possible, and malfunctions can be prevented. Furthermore, since the ribs are arranged in the axial direction on the outer periphery of the inner cylinder of the pointer, it is possible to prevent the pointer from wobbling, and since it is not visible on the outside, it is possible to provide a dust collection amount display device that has a good appearance.
第１図は本発明の一実施例の電気掃除機集塵量表示装置
の縦断面図、第２図は同集塵量表示装置を具備した電気
掃除機の一部切欠した正面図、第３図は同集塵量表示装
置の動作時の状態の縦断面図、第４図は本発明の他の実
施例の電気掃除機の集塵量表示装置の縦断面図、第６図
は同集塵量表示装置の動作時の状態の縦断面図、第６図
は本発明の別の実施例の電気掃除機の集塵量表示装置の
縦断面図、第７図は同集塵量表示装置の動作時の状態の
縦断面図、第８図は本発明の他の実施例の電気掃除機の
集塵量表示装置の縦断面図、第９図機の一部切欠した正
面図である。
４・・・・・・電動送風機、１ｏ・・・・・・指針筒、
１１・・・・・・第１の指針（指針）、１２・・・・・
・第２の指針（指針）、１３・・・・・・連通管、１４
・・・・・・指針ばね、１６・・・・・・指針蓋、１６
・・・・・・指針弁（弁体）、１７・・・・・・内壁、
１９・・・・・・内周壁。FIG. 1 is a vertical sectional view of a vacuum cleaner dust collection amount display device according to an embodiment of the present invention, FIG. 2 is a partially cutaway front view of a vacuum cleaner equipped with the same dust collection amount display device, and FIG. The figure is a vertical sectional view of the dust collection amount display device in operation, FIG. 4 is a vertical sectional view of the dust collection amount display device of a vacuum cleaner according to another embodiment of the present invention, and FIG. 6 is the same FIG. 6 is a vertical cross-sectional view of a dust amount display device of a vacuum cleaner according to another embodiment of the present invention, and FIG. 7 is a vertical cross-sectional view of the dust amount display device in operation. FIG. 8 is a longitudinal sectional view of a dust collection amount display device for a vacuum cleaner according to another embodiment of the present invention, and FIG. 9 is a partially cutaway front view of the vacuum cleaner. 4...Electric blower, 1o...Pointer tube,
11...First guideline (guideline), 12...
・Second pointer (pointer), 13...Communication pipe, 14
... Pointer spring, 16 ... Pointer cover, 16
... Pointer valve (valve body), 17 ... Inner wall,
19... Inner peripheral wall.
Claims (4)
とを遮断しかつこの差圧で変位する弁体と、前記弁体に
接続されて変位する指針と、前記指針を所定の真空圧下
で変位するよう大気圧側にばね付勢する指針ばねと、前
記指針を内部に有する略透明筒体の指針筒と、前記真空
圧部と指針筒とを気密に接続する連通管と、前記弁体を
指針筒に気密に取着する指針蓋とを具備し、前記弁体は
指針に対して大気側に配置し、前記指針は略中央部が大
気圧側に突出する内周筒を有し、前記内周筒を覆うよう
に指針筒の弁取付座より内壁を指針側に突出してなる電
気掃除機の集塵量表示装置。(1) A valve body that shuts off the vacuum pressure part generated by the operation of the electric blower and the atmospheric pressure part and is displaced by this differential pressure, a pointer connected to the valve body and displaced, and a pointer that is connected to the valve body and is displaced, and the pointer is moved to a predetermined vacuum. a pointer spring biased toward the atmospheric pressure side so as to be displaced under pressure; a pointer barrel having a substantially transparent cylindrical body having the pointer inside; a communication tube airtightly connecting the vacuum pressure section and the pointer barrel; The pointer cover airtightly attaches the valve body to the pointer cylinder, the valve body is arranged on the atmospheric side with respect to the pointer, and the pointer has an inner circumferential cylinder with a substantially central portion protruding toward the atmospheric pressure side. A dust collection amount display device for a vacuum cleaner, wherein an inner wall protrudes toward the pointer from a valve mounting seat of the pointer tube so as to cover the inner circumferential tube.
部は指針の内周筒を覆うように大気圧側へ突出し、前記
略帽子状の凸部の外径は指針筒の内壁の内径より小さく
してなる請求項１記載の電気掃除機の集塵量表示装置。(2) The valve body has a substantially cap-shaped protrusion, the substantially cap-shaped protrusion protrudes toward the atmospheric pressure side so as to cover the inner cylinder of the pointer, and the outer diameter of the substantially cap-shaped protrusion is 2. The dust collection amount display device for a vacuum cleaner according to claim 1, wherein the diameter is smaller than the inner diameter of the inner wall of the pointer barrel.
圧側に円筒リブを配設してなる請求項２記載の電気掃除
機の集塵量表示装置。(3) The dust collection amount display device for a vacuum cleaner according to claim 2, wherein the pointer lid is provided with a cylindrical rib on the atmospheric pressure side so as to cover the substantially cap-shaped convex portion of the valve body.
せてなる請求項１記載の電気掃除機の集塵量表示装置。(4) The dust collection amount display device for a vacuum cleaner according to claim 1, wherein the pointer has a plurality of a-ribs projecting in the axial direction from the outer periphery of the inner cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2063189A JPH0832252B2 (en) | 1990-03-14 | 1990-03-14 | Vacuum cleaner dust collection display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2063189A JPH0832252B2 (en) | 1990-03-14 | 1990-03-14 | Vacuum cleaner dust collection display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03264029A true JPH03264029A (en) | 1991-11-25 |
| JPH0832252B2 JPH0832252B2 (en) | 1996-03-29 |
Family
ID=13222035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2063189A Expired - Lifetime JPH0832252B2 (en) | 1990-03-14 | 1990-03-14 | Vacuum cleaner dust collection display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0832252B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5182678A (en) * | 1974-11-29 | 1976-07-20 | Maaden Uirisu Uiriamu | SAATSUIN JIKEETA |
| JPS6171048U (en) * | 1984-10-17 | 1986-05-15 |
-
1990
- 1990-03-14 JP JP2063189A patent/JPH0832252B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5182678A (en) * | 1974-11-29 | 1976-07-20 | Maaden Uirisu Uiriamu | SAATSUIN JIKEETA |
| JPS6171048U (en) * | 1984-10-17 | 1986-05-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0832252B2 (en) | 1996-03-29 |
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