JPH07171083A - Device for detecting dust of electric vacuum cleaner - Google Patents
Device for detecting dust of electric vacuum cleanerInfo
- Publication number
- JPH07171083A JPH07171083A JP32170093A JP32170093A JPH07171083A JP H07171083 A JPH07171083 A JP H07171083A JP 32170093 A JP32170093 A JP 32170093A JP 32170093 A JP32170093 A JP 32170093A JP H07171083 A JPH07171083 A JP H07171083A
- Authority
- JP
- Japan
- Prior art keywords
- light
- guide portion
- dust
- vacuum cleaner
- electric vacuum
- 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.)
- Pending
Links
Landscapes
- Electric Vacuum Cleaner (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、電気掃除機用のゴミ
検出装置（ゴミセンサ）に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust detector (dust sensor) for an electric vacuum cleaner.
【０００２】[0002]
【従来の技術】従来、電気掃除機において、ゴミを検出
するのに投光素子と受光素子を備え、光電技術を用いる
場合が多い。具体的には、図５に示すように、吸気導管
部５１の管壁５２の合対面する位置に***５３を開け、
この***５３に、投光素子５４と受光素子５５を設けて
おり、吸気時に、ゴミが吸気導管部５１の管内を通過
し、投光素子５４から受光素子５５への光が遮断され、
受光素子５５への光量が低下し、その受光出力によりゴ
ミ量が検出される。2. Description of the Related Art Conventionally, electric vacuum cleaners are often provided with a light projecting element and a light receiving element to detect dust and use photoelectric technology. Specifically, as shown in FIG. 5, a small hole 53 is formed at a position where the pipe wall 52 of the intake conduit portion 51 faces each other.
A light projecting element 54 and a light receiving element 55 are provided in this small hole 53, and when inhaling, dust passes through the inside of the intake conduit portion 51, and the light from the light projecting element 54 to the light receiving element 55 is blocked,
The amount of light to the light receiving element 55 decreases, and the amount of dust is detected by the received light output.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の電気掃除機
のゴミ検出装置では、投光素子と受光素子の光軸が一致
するように配置され、また投光素子として通常使用され
る光束の光量エネルギーには図６に示す如き、鋭い指向
性があるため、図５で示すハッチンブ部分５６程度の狭
い範囲での空間を通過する塵埃粒子しか捕捉検出されな
いという問題があった。また図５からも想定されるよう
に、投受光素子の光軸を一致させて大量生産の場で組立
てる作業も容易ではなかった、という問題があった。In the above dust detecting device for the electric vacuum cleaner, the light quantity of the light beam which is arranged so that the optical axes of the light projecting element and the light receiving element are coincident with each other and which is normally used as the light projecting element. Since the energy has a sharp directivity as shown in FIG. 6, there is a problem that only dust particles passing through a space in a narrow range of the hatched portion 56 shown in FIG. 5 are captured and detected. Further, as expected from FIG. 5, there is a problem that it is not easy to assemble the light emitting and receiving elements so that their optical axes coincide with each other in mass production.
【０００４】この発明は、上記問題点に着目してなされ
たものであって、吸気導管部内の広い範囲におよび、ゴ
ミ検出が可能であり、かつ組立が容易な電気掃除機用の
ゴミ検出装置を提供することを目的としている。The present invention has been made in view of the above-mentioned problems, and it is possible to detect dust over a wide range in the intake conduit portion, and the dust detection device for an electric vacuum cleaner is easy to assemble. Is intended to provide.
【０００５】[0005]
【課題を解決するための手段及び作用】この出願の特許
請求の範囲の請求項１記載の電気掃除機のゴミ検出装置
は、吸気導管部の管壁に、筒状案内部を設け、この筒状
案内部にゴミ検出用の投光素子及び受光素子を配設する
ものにおいて、前記筒状案内部内に、筒状案内部の内径
とほぼ等しい外径寸法と投光素子の外径とほぼ等しい内
径寸法を持つガイド筒を設けるとともに、前記吸気導管
部と前記ガイド筒間の前記筒状案内部内に凹レンズを設
けている。A dust detector for an electric vacuum cleaner according to claim 1 of the present application has a tubular guide portion provided on a pipe wall of an intake conduit portion, and the tubular guide portion is provided. In a case where a light emitting element and a light receiving element for dust detection are disposed in a cylindrical guide portion, an outer diameter dimension substantially equal to an inner diameter of the cylindrical guide portion and an outer diameter of the light projecting element are substantially equal to each other in the cylindrical guide portion. A guide tube having an inner diameter is provided, and a concave lens is provided in the tubular guide portion between the intake conduit portion and the guide tube.
【０００６】このゴミ検出装置では、投光素子を内径が
投光素子の外径にほぼ等しいガイド筒に挿設し、さらに
このガイド筒を、内径がガイド筒の外径に等しい筒状案
内部に装着するので、光軸を一致させて、しかも容易に
組立てることができる。また凹レンズによって、投光素
子からの光の指向性をブロードにするので、吸気導管内
におけるゴミの検出範囲が広がる。In this dust detection device, the light projecting element is inserted into a guide tube whose inner diameter is substantially equal to the outer diameter of the light projecting element, and this guide tube is further provided with a tubular guide portion whose inner diameter is equal to the outer diameter of the guide tube. Since it is mounted on the optical axis, the optical axes can be made to coincide with each other and can be easily assembled. Moreover, since the directivity of the light from the light projecting element is broadened by the concave lens, the detection range of dust in the intake conduit is widened.
【０００７】請求項２記載の電気掃除機のゴミ検出装置
は、吸気導管部の管壁に***を設け、この***にゴミ検
出用の投光素子及び受光素子を配設するものにおいて、
前記投光素子を１個以上設けるとともに、投光素子の対
面する吸気導管部の管壁に２個以上の受光素子を設けて
いる。このゴミ検出装置では、投光素子１個に対して受
光素子を２個設けているので、この受光素子２個の出力
を用いることにより、吸気導管内のゴミの検出範囲がよ
り広がる。According to a second aspect of the present invention, there is provided a dust detector for an electric vacuum cleaner, wherein a small hole is provided in a pipe wall of an intake conduit portion, and a light projecting element and a light receiving element for dust detection are arranged in the small hole.
At least one light projecting element is provided, and at least two light receiving elements are provided on the tube wall of the intake conduit section facing the light projecting element. In this dust detection device, since two light receiving elements are provided for one light projecting element, the detection range of dust in the intake conduit is further expanded by using the outputs of these two light receiving elements.
【０００８】請求項３記載の電気掃除機のゴミ検出装置
は、吸気導管部の管壁に、筒状案内部を設け、この筒状
案内部にゴミ検出用の投光素子及び受光素子を配設する
ものにおいて、前記筒状案内部に、筒状案内部の内径と
ほぼ等しい外径寸法と投光素子、受光素子の外径とほぼ
等しい内径寸法を持つガイド筒を設けるとともに、前記
吸気導管部と前記ガイド筒間の投光素子用の前記筒状案
内部に凹レンズを設け、前記吸気導管部と前記ガイド筒
間の受光素子用の筒状案内部分に凸レンズを設けてい
る。According to a third aspect of the present invention, there is provided a dust detecting device for an electric vacuum cleaner, wherein a tubular guide portion is provided on a pipe wall of the intake conduit portion, and a light emitting element and a light receiving element for dust detection are arranged in the tubular guide portion. In the installation, a guide tube having an outer diameter substantially equal to the inner diameter of the tubular guide and an inner diameter substantially equal to the outer diameters of the light projecting element and the light receiving element is provided in the tubular guide portion, and the intake conduit is provided. A concave lens is provided in the tubular guide portion for the light projecting element between the section and the guide tube, and a convex lens is provided in the tubular guide portion for the light receiving element between the intake conduit section and the guide tube.
【０００９】このゴミ検出装置では、受光素子用の筒状
案内部の吸気導管部とガイド筒間に凸レンズを設けてい
るので、受光素子へは凸レンズで収束された光束が入る
ので、吸気導管内のゴミの検出範囲がより広いものとな
る。In this dust detecting device, since the convex lens is provided between the guide tube and the intake conduit portion of the cylindrical guide portion for the light receiving element, the light beam converged by the convex lens enters the light receiving element, so that the inside of the intake conduit The dust detection range is wider.
【００１０】[0010]
【実施例】以下、実施例により、この発明をさらに詳細
に説明する。図１は、この発明の一実施例を示す電気掃
除機のゴミ検出装置の検出部の断面図である。図１にお
いて、吸気導管部１の管壁２より、外方に向けて、筒状
案内部３が形成されている。プリント基板４には投光素
子（あるいは受光素子）５が実装されるとともに、この
プリント基板４にガイド筒６が装着されている。このガ
イド筒６は、内径が発光素子５の外径がほぼ密接するよ
うに、またガイド筒６を筒状案内部３に挿入した際に、
外径が、筒状案内部３の内径にほぼ密着するように、各
寸法が設定されている。The present invention will be described in more detail with reference to the following examples. FIG. 1 is a sectional view of a detection portion of a dust detection device for an electric vacuum cleaner showing an embodiment of the present invention. In FIG. 1, a tubular guide portion 3 is formed outward from a pipe wall 2 of an intake conduit portion 1. A light projecting element (or a light receiving element) 5 is mounted on the printed circuit board 4, and a guide tube 6 is mounted on the printed circuit board 4. The guide cylinder 6 has an inner diameter that is substantially close to the outer diameter of the light emitting element 5, and when the guide cylinder 6 is inserted into the cylindrical guide portion 3,
Each dimension is set so that the outer diameter is in close contact with the inner diameter of the tubular guide portion 3.
【００１１】筒状案内部３の底部に、光束が通過する段
付き***７が設けられ、この段を利用して、凹レンズ８
が装着され、ガイド６の先端部との間にはＯリング状の
ゴムパッキング等の防塵兼緩衝材９が介在配置されてい
る。プリント基板４は、投光素子５及びガイド筒６を下
に向け、筒状案内部３に装着した状態で、吸気導管部１
の所定位置にビス締め等の方法で密着するように固定さ
れているが、ビス締めは、図では省略している。A stepped small hole 7 through which a light beam passes is provided at the bottom of the cylindrical guide portion 3, and the concave lens 8 is utilized by utilizing this step.
A dustproof and cushioning material 9 such as an O-ring rubber packing is interposed between the guide 6 and the tip of the guide 6. The printed circuit board 4 is installed in the tubular guide portion 3 with the light projecting element 5 and the guide tube 6 facing downward, and the intake conduit portion 1
Although it is fixed to the predetermined position so as to be in close contact by a method such as screw tightening, screw tightening is omitted in the figure.
【００１２】この実施例ゴミ検出装置では、発光素子５
から出た光束は凹レンズ７で分散され、光量エネルギー
の分布の指向性は、図２に示すように、図６のものに比
し、ブロードに改善される。図３は、この発明の他の実
施例である電気掃除機のゴミ検出部の断面図である。こ
の実施例装置は、図１に示したものと相違して、ガイド
筒１０として弾力性のある例えばゴム等の材質で構成し
た物であり、単に投光素子５の外径に装着し、筒状案内
部３に挿入することで凹レンズ８の固定と、防塵と光軸
一致の保持のすべてが容易になる。また、図１で使用し
していたゴムパッキング９が不要である。その他の部分
は、図１のものと同様である。In the dust detector of this embodiment, the light emitting element 5
The light flux emitted from the light is dispersed by the concave lens 7, and the directivity of the distribution of the light amount energy is broadly improved as compared with that in FIG. 6 as shown in FIG. FIG. 3 is a cross-sectional view of a dust detecting portion of an electric vacuum cleaner according to another embodiment of the present invention. Unlike the device shown in FIG. 1, the device of this embodiment is configured by a guide tube 10 made of an elastic material such as rubber, and is simply attached to the outer diameter of the light projecting element 5, By inserting the concave lens 8 in the guide portion 3, it becomes easy to fix the concave lens 8 and to prevent dust and keep the optical axis aligned. Further, the rubber packing 9 used in FIG. 1 is unnecessary. Other parts are the same as those in FIG.
【００１３】図４は、この発明のさらに他の実施例であ
る電気掃除機のゴミ検出装置の検出部の概略断面図であ
る。この実施例装置は、吸気導管部１１の管壁１２に、
発光素子１３を貫設する***１４を設ける一方、この発
光素子１３の光軸よりθだけずれた両サイドの***１４
に合対面する管壁１２に***１５、１６を設け、この小
穴１５、１６に受光素子１７、１８を貫設している。こ
のように、２個の受光素子を設けることにより、各受光
領域を分担することで、検出可能範囲１９を広げること
ができる。FIG. 4 is a schematic sectional view of a detecting portion of a dust detecting device for an electric vacuum cleaner according to still another embodiment of the present invention. In this embodiment, the pipe wall 12 of the intake conduit portion 11 is
While providing the small hole 14 penetrating the light emitting element 13, the small hole 14 on both sides deviated by θ from the optical axis of the light emitting element 13.
Small holes 15 and 16 are provided in the tube wall 12 facing each other, and light receiving elements 17 and 18 are provided through the small holes 15 and 16. In this way, by providing two light receiving elements, each light receiving region is shared, so that the detectable range 19 can be expanded.
【００１４】さらに他の実施例として、図１、図３の投
光素子５の代わりに、受光素子をガイド筒６（１０）に
挿着し、凹レンズ８の代わりに凸レンズを設ければ、受
光素子側で、吸気導管内のより広い範囲から、光を受け
ることができ、ゴムの検出領域が広がる。As still another embodiment, if a light receiving element is inserted into the guide tube 6 (10) instead of the light projecting element 5 shown in FIGS. 1 and 3 and a convex lens is provided instead of the concave lens 8, the light is received. On the element side, light can be received from a wider area in the air intake conduit, expanding the rubber detection area.
【００１５】[0015]
【発明の効果】特許請求項１記載の発明によれば、筒状
案内部内に、筒状案内部の内径とほぼ等しい外径部と、
投光素子の外径とほぼ等しい内径寸法を持つガイド筒を
設けるとともに、吸気導管部とガイド筒間に凹レンズを
設けたので、従来、大量生産の場で容易でなかった投受
光素子の光軸一致の組立作業が容易になり、生産コスト
の低減を実現できる。また吸気導管内のゴミ検出領域が
広がり、今までは、実際に吸気空気流中に塵埃粒子が存
在しているにもかかわらず、検出光ビームの指向性がシ
ャープで見逃していた塵埃粒子も検出可能となり、被清
掃対象物をよりクリーンに清掃可能となる。According to the invention described in claim 1, an outer diameter portion substantially equal to the inner diameter of the tubular guide portion is provided in the tubular guide portion.
The optical axis of the light emitting / receiving element, which was not easy in the past in mass production, was provided because a guide tube having an inner diameter approximately equal to the outer diameter of the light emitting element was provided, and a concave lens was provided between the intake conduit and the guide tube. The matching assembling work becomes easy and the production cost can be reduced. In addition, the dust detection area in the intake conduit expands, and even though dust particles actually existed in the intake air flow, the directivity of the detection light beam was sharp and the dust particles that were missed were detected until now. It becomes possible to clean the object to be cleaned more cleanly.
【００１６】また請求項２記載の発明によれば、投光素
子１個に対し、受光素子を２個以上設けているので、吸
気導管内の検出領域が広くなり、被清掃対象物のクリー
ンな清掃が可能となるほか、２個の受光素子の出力のＯ
Ｒ（論理和）を採るか、ＡＮＤ（論理積）を採るか等の
判定レベル切替で、ゴミ検出感度のＨｉｇｈ／Ｌｏｗ調
整設定が可能となる。According to the second aspect of the invention, since two or more light receiving elements are provided for one light projecting element, the detection area in the intake conduit is widened and the object to be cleaned is clean. In addition to cleaning, O of output of two light receiving elements
High / Low adjustment setting of dust detection sensitivity can be performed by switching the determination level such as whether R (logical sum) or AND (logical product) is taken.
【００１７】また請求項３記載の発明によれば、筒状案
内部の内径とほぼ等しい外径部と、投光素子、受光素子
の外径とほぼ等しい内径寸法を持つガイド筒を設けると
ともに、吸気導管部とガイド筒間の投光素子用の筒状案
内部に凹レンズを、受光素子用の筒状案内部に凸レンズ
を、それぞれ設けているので、投受光素子の光軸一致の
組立作業が容易になり、生産コストも低減される。ま
た、検出領域がより広範囲となり、クリーンな清掃がよ
り可能となる。According to the third aspect of the invention, an outer diameter portion substantially equal to the inner diameter of the tubular guide portion and a guide cylinder having an inner diameter dimension substantially equal to the outer diameters of the light projecting element and the light receiving element are provided. Since a concave lens is provided in the cylindrical guide portion for the light emitting element between the intake conduit portion and the guide tube, and a convex lens is provided in the cylindrical guide portion for the light receiving element, it is possible to perform the assembly work for aligning the optical axes of the light emitting and receiving elements. It will be easier and the production cost will be reduced. In addition, the detection area becomes wider and cleaner cleaning becomes possible.
【図１】この発明の一実施例を示す電気掃除機のゴミ検
出装置の検出部の断面図である。FIG. 1 is a cross-sectional view of a detection unit of a dust detection device for an electric vacuum cleaner according to an embodiment of the present invention.
【図２】同実施例装置の光量エネルギーの分布を示す図
である。FIG. 2 is a diagram showing a distribution of light amount energy of the apparatus of the embodiment.
【図３】この発明の他の実施例を示す電気掃除機のゴミ
検出装置の検出部の断面図である。FIG. 3 is a sectional view of a detection portion of a dust detection device for an electric vacuum cleaner according to another embodiment of the present invention.
【図４】この発明の、さらに他の実施例である電気掃除
機のゴミ検出装置の検出部の概略断面図である。FIG. 4 is a schematic cross-sectional view of a detection unit of a dust detection device for an electric vacuum cleaner that is still another embodiment of the present invention.
【図５】従来の電気掃除機のゴミ検出装置の検出部の断
面図である。FIG. 5 is a cross-sectional view of a detection unit of a conventional dust detection device for an electric vacuum cleaner.
【図６】同従来装置の光量エネルギーの分布を示す図で
ある。FIG. 6 is a diagram showing a distribution of light amount energy of the conventional device.
１ 吸気導管部 ２ 管壁 ３ 筒状案内部 ５ 投光素子 ６ ガイド筒 ７ *** ８ 凹レンズ 1 Intake conduit part 2 Pipe wall 3 Cylindrical guide part 5 Light emitting element 6 Guide cylinder 7 Small hole 8 Concave lens
Claims (3)
この筒状案内部にゴミ検出用の投光素子及び受光素子を
配設する電気掃除機のゴミ検出装置において、 前記筒状案内部内に、筒状案内部の内径とほぼ等しい外
径寸法と投光素子の外径とほぼ等しい内径寸法を持つガ
イド筒を設けるとともに、前記吸気導管部と前記ガイド
筒間の前記筒状案内部内に凹レンズを設けたことを特徴
とする電気掃除機のゴミ検出装置。1. A tubular guide portion is provided on a pipe wall of an intake conduit portion,
In a dust detection device for an electric vacuum cleaner, wherein a light projecting element for dust detection and a light receiving element for dust detection are arranged in the tubular guide portion, an outer diameter dimension substantially equal to an inner diameter of the tubular guide portion is provided in the tubular guide portion. A dust detector for an electric vacuum cleaner, wherein a guide cylinder having an inner diameter substantially equal to the outer diameter of the optical element is provided, and a concave lens is provided in the tubular guide portion between the intake conduit portion and the guide cylinder. .
にゴミ検出用の投光素子及び受光素子を配設する電気掃
除機のゴミ検出装置において、 前記投光素子を１個以上設けるとともに、投光素子の対
面する吸気導管部の管壁に２個以上の受光素子を設けた
ことを特徴とする電気掃除機のゴミ検出装置。2. A dust detection device for an electric vacuum cleaner, wherein a small hole is formed in a wall of an intake conduit portion, and a light projecting element and a light receiving element for dust detection are provided in the small hole, wherein at least one light projecting element is provided. A dust detector for an electric vacuum cleaner, characterized in that at least two light-receiving elements are provided on the tube wall of the intake conduit section facing the light-projecting element.
この筒状案内部にゴミ検出用の投光素子及び受光素子を
配設する電気掃除機のゴミ検出装置において、 前記筒状案内部に、筒状案内部の内径とほぼ等しい外径
寸法と投光素子、受光素子の外径とほぼ等しい内径寸法
を持つガイド筒を設けるとともに、前記吸気導管部と前
記ガイド筒間の投光素子用の前記筒状案内部に凹レンズ
を設け、前記吸気導管部と前記ガイド筒間の受光素子用
の筒状案内部分に凸レンズを設けたことを特徴とする電
気掃除機のゴミ検出装置。3. A tubular guide portion is provided on the pipe wall of the intake conduit portion,
In a dust detection device for an electric vacuum cleaner, in which a light emitting element and a light receiving element for dust detection are arranged in the tubular guide portion, an outer diameter dimension substantially equal to the inner diameter of the tubular guide portion is projected onto the tubular guide portion. A guide cylinder having an inner diameter substantially equal to the outer diameter of the optical element and the light receiving element is provided, and a concave lens is provided in the tubular guide portion for the light projecting element between the intake conduit portion and the guide cylinder. A dust detecting device for an electric vacuum cleaner, wherein a convex lens is provided on a cylindrical guide portion for a light receiving element between the guide cylinder and the guide cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32170093A JPH07171083A (en) | 1993-12-21 | 1993-12-21 | Device for detecting dust of electric vacuum cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32170093A JPH07171083A (en) | 1993-12-21 | 1993-12-21 | Device for detecting dust of electric vacuum cleaner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07171083A true JPH07171083A (en) | 1995-07-11 |
Family
ID=18135454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32170093A Pending JPH07171083A (en) | 1993-12-21 | 1993-12-21 | Device for detecting dust of electric vacuum cleaner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07171083A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008005957A (en) * | 2006-06-28 | 2008-01-17 | Matsushita Electric Ind Co Ltd | Dust sensor for vacuum cleaner, and vacuum cleaner |
| JP2011206215A (en) * | 2010-03-29 | 2011-10-20 | Toshiba Corp | Vacuum cleaner |
-
1993
- 1993-12-21 JP JP32170093A patent/JPH07171083A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008005957A (en) * | 2006-06-28 | 2008-01-17 | Matsushita Electric Ind Co Ltd | Dust sensor for vacuum cleaner, and vacuum cleaner |
| JP2011206215A (en) * | 2010-03-29 | 2011-10-20 | Toshiba Corp | Vacuum cleaner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Effective date: 20040309 Free format text: JAPANESE INTERMEDIATE CODE: A02 |