JP3528689B2 - Suction body of vacuum cleaner and vacuum cleaner having the same - Google Patents
Suction body of vacuum cleaner and vacuum cleaner having the sameInfo
- Publication number
- JP3528689B2 JP3528689B2 JP19837199A JP19837199A JP3528689B2 JP 3528689 B2 JP3528689 B2 JP 3528689B2 JP 19837199 A JP19837199 A JP 19837199A JP 19837199 A JP19837199 A JP 19837199A JP 3528689 B2 JP3528689 B2 JP 3528689B2
- Authority
- JP
- Japan
- Prior art keywords
- suction
- casing
- joint
- universal joint
- suction port
- 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
Links
Landscapes
- Nozzles For Electric Vacuum Cleaners (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電気掃除機の吸口体
に係り、特に騒音の低減を図るとともに、吸口体の操作
性を向上させた電気掃除機の吸口体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction body of an electric vacuum cleaner, and more particularly to a suction body of an electric vacuum cleaner in which noise is reduced and operability of the suction body is improved.
【０００２】[0002]
【従来の技術】従来の電気掃除機に使用されている吸口
体は、特開平１１−１１３８１４号公報に記載のよう
に、上部材と下方開口の吸込口６を有する下部材で形成
された本体と、一端が前記上部材と下部材で傾動自在に
狭持されたアームと一端が前記アームの他端に回動自在
に取着され他端が掃除機本体にに連通するように接続さ
れるパイプと、前記吸込口、アーム、パイプを連通する
塵埃通路とを備え、前記アームの内壁に棚リブを前記吸
込口側に延接し、吸込具本体を空中に持ち上げたとき
に、前記上部材とした部材の少なくとも一方の内壁にア
ーム側端部と前記棚リブの前記吸込口側端部とが略同一
面になるように構成されている。2. Description of the Related Art A suction body used in a conventional electric vacuum cleaner is a main body formed of an upper member and a lower member having a suction opening 6 of a lower opening, as described in JP-A-11-113814. And an arm having one end tiltably held by the upper member and the lower member, and one end rotatably attached to the other end of the arm and the other end connected to the cleaner body. A pipe and a suction passage, an arm, and a dust passage that communicates with the pipe are provided, and a shelf rib is extended to the suction port side on the inner wall of the arm, and when the suction tool body is lifted in the air, the upper member is The arm side end and the suction port side end of the shelf rib are configured to be substantially flush with at least one inner wall of the member.
【０００３】[0003]
【発明が解決しようとする課題】上記技術においては、
アームに構成された塵埃通路とパイプ内壁との段差が生
じないようにして、接続部の気流の急激な変化により発
生する騒音を低減するものである。しかしながら、上部
材または下部材で構成される壁面内の構造および、アー
ム部の内壁の構造に関しては何等考慮がされていない。SUMMARY OF THE INVENTION In the above technology,
By preventing a step between the dust passage formed in the arm and the inner wall of the pipe from occurring, noise generated due to a sudden change in the air flow at the connecting portion is reduced. However, no consideration has been given to the structure inside the wall formed of the upper member or the lower member and the structure of the inner wall of the arm portion.
【０００４】ところで、下ケースに上ケースを被着した
吸口本体と、その吸口本体に対して上下方向に回動可能
な第１の接続管と、第１の接続管に対して左右方向に回
動可能な接続管を設ける構成では、第１の接続管と第２
の接続管が円筒管で接続されており、吸込通路の中央断
面では、上部下部とも内壁面をR形状に構成されてい
る。しかし、第２の接続管の円筒部左右側では、前記第
１の接続管の舌部を形成したことにより、左右方向の回
動時に舌部が干渉を避けるためにR形状が構成できなく
なり、屈曲部が形成されていたので、この部分での気流
の乱れにより、騒音が発生していた。By the way, a mouthpiece body in which an upper case is attached to a lower case, a first connecting pipe which is vertically rotatable with respect to the mouthpiece body, and a first connecting pipe which is rotatable in the left-right direction. In the structure in which the movable connecting pipe is provided, the first connecting pipe and the second connecting pipe are provided.
The connecting pipes of are connected by a cylindrical pipe, and in the central cross section of the suction passage, the inner wall surfaces of both the upper and lower portions are formed in an R shape. However, since the tongue portion of the first connecting pipe is formed on the left and right sides of the cylindrical portion of the second connecting pipe, the R shape cannot be configured because the tongue portion avoids interference when rotating in the left-right direction, Since the bent portion was formed, noise was generated due to the turbulence of the air flow in this portion.
【０００５】また、第１の接続管と第２の接続管の上下
方向の曲り形状については、騒音低減のため工夫されて
いるが、それ以外の箇所については騒音に対する配慮が
不十分であった。Further, the bent shapes of the first connecting pipe and the second connecting pipe in the vertical direction are devised for noise reduction, but the noise is not sufficiently taken into consideration at other portions. .
【０００６】そこで、本発明の目的は、上記課題を解決
し、吸込経路の屈曲部からの気流の剥離発生を無くし、
騒音低減量を大幅に向上させた電気掃除機を提供するこ
とにある。Therefore, an object of the present invention is to solve the above-mentioned problems, to eliminate the occurrence of air flow separation from the bent portion of the suction passage,
An object of the present invention is to provide an electric vacuum cleaner having a significantly improved noise reduction amount.
【０００７】[0007]
【課題を解決するための手段】 上記目的を達成するた
めに本発明の特徴とするところは、塵埃を吸込むための
吸込口を有する吸口本体と、該吸口本体に接続された自
在継手部とを有し、該自在継手部は、一端側が前記吸口
本体に対して上下方向に回動可能に接続されるケーシン
グと、一端側が前記ケーシングの他端側に回動可能に接
続され、他端側が延長管に接続され、前記吸口本体に対
して左右方向に回動可能な吸口継手とを備えた電気掃除
機の吸口体において、前記自在継手部を床面に近づけた
状態において、前記吸口継手は前記ケーシングの下側に
位置し、前記吸口継手の吸込通路の下部内壁に、前記自
在継手部内の流路断面積変化を小さくするための凸部を
形成したことである。Means for Solving the Problems In order to achieve the above-mentioned object, a feature of the present invention resides in that:
A suction body having a suction port, and a self connected to the suction body.
A universal joint portion, and one end side of the universal joint portion is the suction port
A casein connected to the main body so that it can rotate vertically
And one end of the casing is rotatably connected to the other end of the casing.
And the other end is connected to the extension pipe and is connected to the mouthpiece body.
And electric cleaning with a suction joint that can be rotated in the left-right direction
In the mouthpiece of the machine, the universal joint was brought close to the floor.
In this state, the mouthpiece fitting is located below the casing.
Is located on the inner wall of the lower portion of the suction passage of the mouthpiece joint,
Protrusions are provided to reduce the change in flow path cross-sectional area in the existing joint.
That is what I formed .
【０００８】また、本願発明の特徴とするところは、電
動送風機を内蔵する掃除機本体と、該掃除機本体に接続
されたホースと、該ホースに延長管を介して接続された
吸口体とを有し、前記吸口体は、塵埃を吸込むための吸
込口を有する吸口本体と、該吸口本体に接続された自在
継手部とを有し、該自在継手部は、一端側が前記吸口本
体に対して上下方向に回動可能に接続されるケーシング
と、一端側が前記ケーシングの他端側に回動可能に接続
され、他端側が延長管に接続され、前記吸口本体に対し
て左右方向に回動可能な吸口継手とを備え備えた電気掃
除機において、前記自在継手部を床面に近づけた状態に
おいて、前記吸口継手は前記ケーシングの下側に位置
し、前記吸口継手の吸込通路の下部内壁に、前記自在継
手部内の流路断面積変化を小さくするための凸部を形成
したことにある。Further, it is an aspect of the present invention, electrostatic
A vacuum cleaner body with a built-in blower and connected to the vacuum cleaner body
Connected hose and connected to the hose via an extension pipe
And a sucker for sucking dust.
A mouthpiece body with an inlet and a flexible body connected to the mouthpiece body
A universal joint portion, one end side of which is the suction port main body.
Casing that is connected to the body so that it can rotate vertically
And one end side is rotatably connected to the other end side of the casing.
And the other end is connected to the extension pipe,
With an end fitting that can be swung in the left-right direction
When removing the machine, place the universal joint near the floor.
The mouthpiece is located below the casing
The universal joint on the lower inner wall of the suction passage of the mouthpiece joint.
Protrusions are formed to reduce the change in flow path cross-sectional area in the hand.
There is something I did .
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施例を添付の図
面を参照して説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.
【００１０】図１４に本発明の一実施例に係る電気掃除
機の外観の斜視図を示しており、１５０１は制御回路や
電動送風機等が内蔵された掃除機本体、１５０２は掃除
機本体１５０１の吸込口部に接続されたホース、１５０
３は使用者が握ると共に一端側にホースを接続するホー
ス手元部、１５０４はホース手元部１５０３の他端側に
接続された延長管、１５０５は延長管１５０４に接続さ
れた吸口体、１５０６はホース手元部１５０３に設けら
れたスイッチ操作部を示している。FIG. 14 shows a perspective view of the appearance of an electric vacuum cleaner according to an embodiment of the present invention. Reference numeral 1501 denotes a cleaner body having a control circuit, an electric blower and the like built therein, and 1502 denotes a cleaner body 1501. A hose connected to the suction port, 150
Reference numeral 3 denotes a hose hand portion for the user to grasp and connect a hose to one end side, 1504 denotes an extension pipe connected to the other end side of the hose hand portion 1503, 1505 a suction body connected to the extension pipe 1504, and 1506 a hose. The switch operation part provided in the hand part 1503 is shown.
【００１１】次に本発明にかかる電気掃除機の動作につ
いて説明すると、掃除機の使用者がホース手元部１５０
３に設けられたスイッチ操作部１５０６を操作すると、
掃除機本体１５０１に内蔵されている制御回路を介して
掃除機を制御するようにしている。Next, the operation of the electric vacuum cleaner according to the present invention will be described.
When the switch operating unit 1506 provided in 3 is operated,
The cleaner is controlled via a control circuit built in the cleaner body 1501.
【００１２】吸口体１５０５は塵埃を吸い込むための吸
込口１１６を備えた吸口本体１０１と、吸口本体１０１
を延長管１５０４に連結し、延長管１５０４を介して伝
達されるホース手元部１５０３の動きに対して常に吸口
本体１０１の底面を床面に接するように動作すると共
に、吸口本体１０１から吸い込んだ塵埃を含んだ空気流
が延長管１５０４に導かれるように連通する自在継手部
１１８とで構成される。The suction body 1505 includes a suction body 101 having a suction port 116 for sucking dust, and a suction body 101.
Is connected to the extension pipe 1504 and operates so that the bottom surface of the suction mouth body 101 is always in contact with the floor surface in response to the movement of the hose proximal portion 1503 transmitted through the extension pipe 1504, and the dust sucked in from the suction mouth body 101. And a universal joint portion 118 that communicates so that the air flow including the air is guided to the extension pipe 1504.
【００１３】自在継手部１１８は吸口体１５０５を中心
にして、ホース手元部１５０３の高低方向Ｙと、左右方
向Ｘに回転可能に連結するとともに、ホース手元部１５
０３のひねり動作の回転Ｐ１をそのまま吸口本体１０１
の回転Ｐ２に伝達する機構を備えている。The universal joint portion 118 is rotatably connected in the vertical direction Y of the hose hand portion 1503 and the left-right direction X around the suction body 1505, and at the same time, the hose hand portion 15 is provided.
The rotation P1 of the twisting movement of 03 is directly applied to the suction body 101
It is equipped with a mechanism for transmitting the rotation P2.
【００１４】本実施例では、自在継手部１１８を、吸口
本体１０１に回動自在に取り付けられ高低方向Ｙの回転
を可能にするケーシング２０３と、一端を延長管１５０
４に取り付けられ、他端をケーシング２０３と左右方向
Ｘの回転を可能にするように取り付けられる吸口継手１
０４とから構成している。In this embodiment, the universal joint part 118 is rotatably attached to the mouthpiece body 101, and has a casing 203 for enabling rotation in the vertical direction Y, and an extension pipe 150 at one end.
4 and the other end is attached to the casing 203 so that the other end can rotate in the left-right direction X.
It is composed of 04 and.
【００１５】このようにすることで、ホース手元部１５
０３の操作により吸口体１５０５の方向を変えることが
できる。すなわち、ホース手元部１５０３を９０度（回
転Ｐ１）ひねることにより、吸口体１５０５を図１４の
点線に示すように９０度（回転Ｐ２）回転させることが
できる。By doing so, the hose hand portion 15
The direction of the suction body 1505 can be changed by operating 03. That is, by twisting the hose proximal portion 1503 by 90 degrees (rotation P1), the suction body 1505 can be rotated by 90 degrees (rotation P2) as shown by the dotted line in FIG.
【００１６】この状態で通常の前後方向の操作を行え
ば、吸口本体１０１の短手方向の幅の隙間まで掃除する
ことができる。また、この状態で吸口本体１０１の前縁
を壁際に接触させ、ホース手元部１５０３を通常の前後
方向に移動させる動作をすると、吸口本体１０１は壁面
に沿って移動するので壁際の床面清掃を効率的に行うこ
とができる。In this state, by performing a normal operation in the front-rear direction, it is possible to clean the gap of the width of the mouthpiece main body 101 in the lateral direction. Further, in this state, when the front edge of the mouthpiece main body 101 is brought into contact with the wall and the hose proximal portion 1503 is moved in the normal front-back direction, the mouthpiece main body 101 moves along the wall surface, so the floor surface near the wall is cleaned. It can be done efficiently.
【００１７】次に吸口体１５０５の構造について、図１
５〜図２０を用いて説明する。Next, the structure of the suction body 1505 is shown in FIG.
This will be described with reference to FIGS.
【００１８】図１５は本実施の形態に係る吸口体１５０
５から上ケース２０１を外した状態の上面図、図１６は
図１４における縦断面図、図１７は吸口体１５０１の側
面図、図１８はケーシング２０３と吸口継手１０４との
回動動作を示す上面図、図１９はケーシング２０３と吸
口継手１０４の側面図、図２０は図１９におけるＧ−Ｇ
断面図である。FIG. 15 shows a suction body 150 according to this embodiment.
5 is a top view showing a state in which the upper case 201 is removed from FIG. 5, FIG. 16 is a vertical cross-sectional view of FIG. 14, FIG. 17 is a side view of the mouthpiece 1501, and FIG. 18 is a top view showing a rotating operation of the casing 203 and the mouthpiece joint 104. 19 is a side view of the casing 203 and the suction joint 104, and FIG. 20 is GG in FIG.
FIG.
【００１９】図１４〜図２０において、１８０１は吸込
口１１６内に配設された回転清掃体であり、この回転清
掃体１８０１の軸線方向に両側にはタービン１８０２が
配設されている。In FIGS. 14 to 20, reference numeral 1801 denotes a rotary cleaning member arranged in the suction port 116, and turbines 1802 are arranged on both sides in the axial direction of the rotary cleaning member 1801.
【００２０】吸口継手１０４の上方には、継手カバー１
０５に形成した凹部１８０３に嵌合して係止手段となる
ストッパー１８０４が配設されている。このストッパー
1804は、上方をストッパーカバー１８０６で覆われてお
り、このストッパーカバー１８０６に形成した爪部２３
０１を吸口継手１０４に形成した孔２２０１に嵌合させ
ることにより、吸口継手１０４に取り付けている。な
お、この孔２２０１は吸口継手１０４の外側から図１７
に示すような警告シール２００１を貼り付けることによ
り、孔２２０１を隠すことが可能である。Above the mouthpiece joint 104, the joint cover 1
A stopper 1804 that fits in the recess 1803 formed in 05 and serves as locking means is provided. This stopper
The upper portion of the 1804 is covered with a stopper cover 1806, and the claw portion 23 formed on the stopper cover 1806.
01 is fitted into the hole 2201 formed in the mouthpiece joint 104 to attach it to the mouthpiece joint 104. It should be noted that this hole 2201 is provided from the outside of the suction joint 104 in FIG.
The hole 2201 can be hidden by attaching a warning sticker 2001 as shown in FIG.
【００２１】また、ストッパー１８０４の内部には、弾
性を有するバネ１８０５を内蔵しており、ストッパー１
８０４の先端部を継手カバー１０５の凹部１８０３に押
圧するように付勢している。Further, a spring 1805 having elasticity is built in the stopper 1804, and the stopper 1
The tip of 804 is urged to press into the recess 1803 of the joint cover 105.
【００２２】本実施例の吸口継手１０４は、吸口体１５
０１の進行方向に対して左右方向に回動自在に配設され
ているため、吸口体１５０１を操作しているときに左右
方向にふらつく状態が生じる。このため、本実施例で
は、ストッパー１８０４を凹部１８０３に嵌合させるこ
とにより、進行方向における直進安定性を確保するよう
にしている。The mouthpiece joint 104 of this embodiment includes a mouthpiece 15
Since it is arranged so as to be rotatable in the left-right direction with respect to the traveling direction of 01, when the suction body 1501 is operated, a state of wobbling in the left-right direction occurs. For this reason, in this embodiment, the stopper 1804 is fitted into the recess 1803 to ensure straight-line stability in the traveling direction.
【００２３】なお、ホース手元部１５０３を左右方向に
ひねった場合には、図１８に示すようにストッパー１８
０４が凹部１８０３を乗り越えて、ホース手元部１５０
３の操作に応じて吸口体が左右方向に回転する。バネ１
８０５の弾性力はホース手元部１５０３の操作に応じて
吸口体１５０１が容易に回転できるよう、適宜設定すれ
ばよい。When the hose proximal portion 1503 is twisted in the left-right direction, as shown in FIG.
04 passes over the recess 1803, and the hose handle 150
The suction body rotates in the left-right direction according to the operation of 3. Spring 1
The elastic force of 805 may be appropriately set so that the suction body 1501 can be easily rotated according to the operation of the hose proximal portion 1503.
【００２４】図1に示す吸口本体１０１は、その略中央
の高さの位置で上下に二分割されており、外郭を形成す
る下ケース１０２と、この下ケース１０２の上部にはブ
ラシカバー３０１とその後方には上ケース２０１とによ
り形成されている。The mouthpiece main body 101 shown in FIG. 1 is vertically divided into two parts at a position approximately at the center thereof, and forms a lower case 102 and a brush cover 301 on the upper part of the lower case 102. It is formed by the upper case 201 on the rear side.
【００２５】下ケース１０２とブラシカバー３０１とが
接触する位置の外周には、気密を保持すると共に家具等
への傷付きを防止する衝撃吸収バンパー１０３が取付け
られている。A shock absorbing bumper 103 is attached to the outer periphery of the position where the lower case 102 and the brush cover 301 come into contact with each other to keep airtightness and prevent damage to furniture or the like.
【００２６】この衝撃吸収バンパー１０３は、水添スチ
レンブタジエンラバーとポリプロピレンのアロイを基材
として、フッ素樹脂パウダーとシリコーンオイルを添加
した高摺動樹脂より形成されている。これにより、壁際
掃除等で衝撃吸収バンパーが壁面と接触したときの高摺
動性を確保している。The shock absorbing bumper 103 is made of a highly sliding resin containing an alloy of hydrogenated styrene butadiene rubber and polypropylene as a base material, to which fluororesin powder and silicone oil are added. As a result, high slidability is ensured when the shock absorbing bumper comes into contact with the wall surface for cleaning the wall.
【００２７】吸口本体１０１の後方には自在継手部１１
８が配設されている。自在継手部１１８は略筒形状のケ
ーシング２０３と吸口継手１０４、及び、継手カバー１
０５より構成されている。A universal joint 11 is provided behind the mouthpiece body 101.
8 are provided. The universal joint portion 118 includes a substantially tubular casing 203, a mouthpiece joint 104, and the joint cover 1.
It is composed of 05.
【００２８】吸口体１５０５は、下ケース１０２に自在
継手部１１８をはめ込み、上ケース２０１をケーシング
２０３を覆うようにして、下ケース１０２に固定する。
次に下ケースの前方に回転清掃体１８０１を挿入し、ブ
ラシカバー３０１を上部よりはめ込み、組み立てられ
る。The suction body 1505 is fixed to the lower case 102 so that the universal joint 118 is fitted into the lower case 102 and the upper case 201 covers the casing 203.
Next, the rotary cleaning body 1801 is inserted in front of the lower case, and the brush cover 301 is fitted from the upper side to assemble.
【００２９】当初は、ブラシカバー３０１とケーシング
２０３を繋ぐ上ケースの略中央断面は図2に示す形状と
なり、流路断面形状から見ると、凸部を形成していた。
これら部材は射出成形品であり、板厚が約２ｍｍ程度の
均一なものとなるため、上記凸部形状となっていた。Initially, the substantially central cross section of the upper case connecting the brush cover 301 and the casing 203 had the shape shown in FIG. 2, and when viewed from the cross sectional shape of the flow path, a convex portion was formed.
These members were injection-molded products and had a plate thickness of about 2 mm and were uniform, so they had the above-mentioned convex shape.
【００３０】また、ケーシング２０３は、上下の回動を
行うため略円筒状に形成されており、前述同様板厚一定
のため流路形状も略円筒状となっていた。Further, the casing 203 is formed in a substantially cylindrical shape in order to rotate up and down. Since the plate thickness is constant, the flow path is also formed in a substantially cylindrical shape as described above.
【００３１】次に、気流の流れについて説明する。吸込
口１１６から流入した気流は、吸口中央付近では、回転
清掃体１８０１と下ケース１０２の間を通り、吸込通路
３００で拡大し、ケーシング２０３と吸口継手１０４の
曲り部を通り、延長管に導かれる。このとき、吸込通路
３００で拡大した上方側の気流は、上ケース２０１の端
部２０１ａに衝突して流れが剥離し、拡散され、上ケー
ス２０１の凸部とケーシング２０３の先端部分で渦が発
生し、騒音を発生しているものと考えられる。Next, the flow of air flow will be described. The airflow flowing from the suction port 116 passes between the rotary cleaning body 1801 and the lower case 102 near the center of the suction port, expands in the suction passage 300, passes through the bent portion of the casing 203 and the suction joint 104, and is guided to the extension pipe. Get burned. At this time, the upper side airflow expanded in the suction passage 300 collides with the end portion 201a of the upper case 201, the flow is separated and diffused, and a vortex is generated in the convex portion of the upper case 201 and the tip portion of the casing 203. However, it is considered that noise is being generated.
【００３２】ここで、吸口体１５０１を油膜法による流
れの可視化を行い、前記上ケース２０１の凸部と前記の
ケーシング２０３の略円筒状の上流側で気流によって油
膜が剥がれることなく残っていることから、流れが剥離
していることが検証された。Here, the flow of the suction body 1501 is visualized by the oil film method, and the oil film remains on the convex portion of the upper case 201 and the substantially cylindrical upstream side of the casing 203 without being peeled off by the air flow. From this, it was verified that the flow was separated.
【００３３】そこで、図１のように本実施例では、上ケ
ース２０１の凸部の段差を無くし、ケーシングの円筒部
分の内壁を平坦化して、実際に騒音を測定するとそれぞ
れ騒音を１ｄＢ低減することができた。さらには、両者
を同時に施すことにより、図５のようになり、２ｄＢの
低減が図れた。Therefore, as shown in FIG. 1, in this embodiment, the step of the convex portion of the upper case 201 is eliminated, the inner wall of the cylindrical portion of the casing is flattened, and the noise is actually reduced by 1 dB when actually measured. I was able to. Further, by applying both at the same time, the result is as shown in FIG. 5, and the reduction of 2 dB was achieved.
【００３４】従って、上ケース２０１の凸部の段差を無
くし、ケーシング２０３の円筒部分の内壁を平坦化する
即ち略円形断面となるように構成することにより、流れ
の剥離を抑えられたことが実証できた。Therefore, it has been proved that the flow separation can be suppressed by eliminating the step difference of the convex portion of the upper case 201 and by flattening the inner wall of the cylindrical portion of the casing 203, that is, by forming it into a substantially circular cross section. did it.
【００３５】前記上ケース内壁部の段差を無くすには、
本実施例の図１に示すようなコの字形のピース３０２の
をはめ込むか、あるいは図３のように、上ケース２０１
側からリブ２０１ｂを立て平板３０４を貼りつける等し
て構成すれば良い。To eliminate the step on the inner wall of the upper case,
In this embodiment, a U-shaped piece 302 as shown in FIG. 1 is fitted, or as shown in FIG.
The rib 201b may be stood from the side and a flat plate 304 may be attached to the rib 201b.
【００３６】また、ケーシング２０３の上方内壁面を平
坦化するには、図１のように板厚を一様にするために円
筒部と平面部３０３の間を中空にすれば良い。また、図
４のように別体のかまぼこ状のピース３０５を製作し、
前記ピース３０５の爪３０５ａとケーシング２０３の切
り溝２０３ａに挿入することで実現できる。Further, in order to flatten the upper inner wall surface of the casing 203, a hollow space may be provided between the cylindrical portion and the flat portion 303 in order to make the plate thickness uniform as shown in FIG. Also, as shown in FIG. 4, a separate kamaboko-shaped piece 305 is manufactured,
It can be realized by inserting the claw 305a of the piece 305 and the cut groove 203a of the casing 203.
【００３７】以上により、静音化の実現には、上ケース
２０１では、部品の追加とケーシング２０３では、型改
造レベルで対応でき、大きさを維持し、しかも安価な費
用で、大きな効果が得られる。As described above, in order to realize the noise reduction, in the upper case 201, it is possible to deal with the addition of parts and the casing 203 at a mold remodeling level, the size is maintained, and a great effect can be obtained at a low cost. .
【００３８】さらに、図６のように、ケーシング２０３
内側の後側には、吸口継手１０４の内側と重なるよう
に、かつケーシングフランジ部５０２と継手フランジ部
５０４の接合面より下側に、舌部５０８が形成されてい
る。この舌部５０８は、ケーシング２０３から吸口継手
１０４に向かって滑らかに形成されており、ケーシング
２０３から吸口継手１０４に向かって流れる気流をスム
ーズに流れるように整流している。Further, as shown in FIG. 6, the casing 203
A tongue portion 508 is formed on the inner rear side so as to overlap the inner side of the mouthpiece joint 104 and below the joint surface between the casing flange portion 502 and the joint flange portion 504. The tongue portion 508 is formed smoothly from the casing 203 toward the suction joint 104, and rectifies the airflow flowing from the casing 203 toward the suction joint 104 so as to smoothly flow.
【００３９】ここで、図６のように流路中央の断面で
は、屈曲部の曲り半径が一段目がＲ１５ｍｍ、二段目が
Ｒ２０ｍｍで構成されており、流れがスムーズに導かれ
る。Here, in the cross section of the center of the flow path as shown in FIG. 6, the bending radius of the bent portion is R15 mm in the first step and R20 mm in the second step, so that the flow is smoothly guided.
【００４０】一方、前記舌部５０８が左右方向に回動す
るために、吸口継手１０４の円環部１０４ａの左右９０
度方向の位置に舌部５０８を回避するために、窪み１０
４ｂが生じていた。On the other hand, since the tongue portion 508 pivots in the left-right direction, the left-right portion 90 of the annular portion 104a of the suction joint 104 is
In order to avoid the tongue 508 in the degree position, the depression 10
4b had occurred.
【００４１】ここで、前述同様自在継手部１１８の流れ
の可視化を行い、吸口継手１０４の円環部１０４ａを観
察すると図６（ａ）に示す斜線部分に油膜が溜まってい
た。これにより、流れを推定すると、ケーシング２０３
の側壁面側の気流は、（ｂ）のように、中央付近の流れ
は壁面に沿ってスムーズに流れ、側面付近の気流は、平
面部分で加速され、円環部１０４ａから下流側に流れが
移行する際に、窪み部分１０４ｂで流れがはく離し、渦
となって騒音の発生しているものと思われる。Here, the flow of the universal joint 118 was visualized as described above, and when the annular portion 104a of the suction joint 104 was observed, an oil film was accumulated in the shaded portion shown in FIG. 6 (a). Thus, when the flow is estimated, the casing 203
As shown in (b), the airflow on the side wall surface of the side wall smoothly flows in the vicinity of the center along the wall surface, and the airflow near the side surface is accelerated in the flat portion and flows from the annular portion 104a to the downstream side. At the time of transition, it is considered that the flow separates at the recessed portion 104b, forming a vortex and generating noise.
【００４２】一方、自在継手１１８の流路断面積変化を
計測した。図７（ａ）の太い矢印で示した線に対する垂
直な断面積を流路長さに対する変化をプロットしたの
が、（ｂ）である。継手入口から断面積は徐々に小さく
なり、前記円環部の窪み付近で面積が急激に大きく変化
し、また、徐々に小さくなっている。これからも、急激
な面積変化による速度変動が起こり、流れがはく離し易
い状態になっていることが伺える。On the other hand, the change in the cross-sectional area of the flow path of the universal joint 118 was measured. FIG. 7B is a graph in which the cross-sectional area perpendicular to the line indicated by the thick arrow in FIG. 7A is plotted with respect to the flow path length. The cross-sectional area gradually decreases from the joint inlet, the area changes drastically and largely in the vicinity of the depression of the annular portion, and gradually decreases. It can be seen from now on that the velocity changes due to the rapid area change, and the flow is easily separated.
【００４３】そこで、本実施例では図８、図９、図１０
のように吸口継手１０４の円環下部側の内壁側面側に、
丸みを有した凸部３０６を形成することにより、はく離
を抑えることができ、騒音を低減できる。また、気流に
淀みがなくスムーズに流れるため、ゴミの蓄積が防げる
とともに集塵性能が向上する。Therefore, in this embodiment, FIG. 8, FIG. 9 and FIG.
To the inner wall side surface of the lower end of the ring of the mouthpiece fitting 104,
By forming the convex portion 306 having a roundness, peeling can be suppressed and noise can be reduced. In addition, since the airflow is smooth and flows smoothly, it is possible to prevent the accumulation of dust and improve the dust collection performance.
【００４４】実際に騒音を測定すると図１１のように２
ｄＢの低減効果が得られた。When the noise is actually measured, it is 2 as shown in FIG.
The effect of reducing dB was obtained.
【００４５】また、ケーシング２０３と吸口継手１０４
の左右回動を可能にするために、図１２のように、前記
凸部３０６の壁面側に舌部５０８の形状を見込んだ切り
欠き部３０７を設けても、騒音低減の効果量は変化がな
いことを確認している。Further, the casing 203 and the mouthpiece joint 104
Even if a cutout portion 307 is provided on the wall surface side of the convex portion 306 in consideration of the shape of the tongue portion 508 in order to enable the leftward and rightward rotation of the tongue 306, the noise reduction effect amount does not change. I'm sure it's not there.
【００４６】これまでの実施例を全て盛り込んだ場合、
つまり、上ケース２０１の凸部の段差を無くし、ケーシ
ング２０３の円筒部分の内壁を平坦化し、さらに、吸口
継手１０４の円環下部側の内壁側面側に、丸みを有した
凸部３０６を形成して、騒音を測定すると、図１３のよ
うに４ｄＢの低減が図れた。従って、掃除時に静かな運
転音となり実用的価値が高い吸口体１５０５が得られ
た。When all the above-described examples are included,
That is, the step of the convex portion of the upper case 201 is eliminated, the inner wall of the cylindrical portion of the casing 203 is flattened, and the convex portion 306 having a roundness is formed on the inner wall side surface of the lower end of the ring of the mouthpiece joint 104. When the noise was measured, a reduction of 4 dB was achieved as shown in FIG. Therefore, the sucking body 1505 having a high practical value can be obtained with a quiet operating noise during cleaning.
【００４７】[0047]
【００４８】[0048]
【００４９】[0049]
【００５０】次に、吸口体１５０５を回転させる時の動
作について説明する。Next, the operation of rotating the suction body 1505 will be described.
【００５１】図１４において、ホース手元部１５０３を
把持しＢ２軸周りに反時計周り方向に延長管１５０４を
ひねると、ケーシング２０３は吸口継手１０４に対し反
時計周り方向に回動し、又吸口本体１０１に対して上方
に回動し始め、吸口本体１０１が反時計周りに回動し始
める。In FIG. 14, when the hose proximal portion 1503 is gripped and the extension pipe 1504 is twisted in the counterclockwise direction around the B2 axis, the casing 203 rotates counterclockwise with respect to the suction joint 104, and also the suction main body. The mouthpiece body 101 starts rotating upward with respect to 101, and starts rotating counterclockwise.
【００５２】そして、ホース手元部１５０３を約９０°
までひねると、ケーシング２０３は吸口本体１０１に対
し、ほぼ直立となり、吸口本体１０１は約９０°回転し
て、吸口本体１０１の長手方向が操作方向とほぼ平行に
なる。Then, the hose base 1503 is set to about 90 °.
Twisting up against the casing 203 is suction body 101, substantially straight to stand'll, suction body 101 is rotated about 90 °, the longitudinal direction of the suction port body 101 is substantially parallel to the operating direction.
【００５３】このように、吸口本体１０１の角度をホー
ス手元部１５０３のひねり角によって制御することが出
来るため、吸口体１５０５の操作方向に対する横幅を様
々に変えることが出来るので、テーブルの下やいすの下
など、込み入った場所を掃除する時の効率を向上するこ
とが出来る。As described above, since the angle of the mouthpiece body 101 can be controlled by the twist angle of the hose hand portion 1503, the lateral width of the mouthpiece 1505 with respect to the operating direction can be variously changed, so that the chair under the table can be changed. It is possible to improve the efficiency when cleaning complicated places such as under the floor.
【００５４】また、吸口本体が９０°回転した状態にお
いては、ケーシング２０３が吸口本体１０１に対して略
直立となる。この状態で吸口本体１０１の前縁を壁面に
当接させて前後に操作すれば、壁際の掃除を効率良く行
うことが出来る。 [0054] Further, in a state where the suction port body is rotated 90 °, to stand becomes substantially <br/> straight with respect to the casing 203 is suction body 101. In this state, set the front edge of the mouthpiece main body 101 on the wall surface.
If you touch it and operate it back and forth, you can efficiently clean the walls.
You can
【００５５】[0055]
【００５６】以上のように本実施例によれば、吸口体１
５０５の高さ方向寸法を低く位置を維持したまま清掃す
ることができる。このため、ベッドやソファーの下など
の掃除をすることができる。また、拭きハケにより木床
上を拭くことができるので掃除効率を向上することがで
きる。As described above, according to this embodiment, the mouthpiece 1
The height dimension of 505 can be cleaned while keeping the position low. Therefore, it is possible to clean the bed, the sofa, and the like. In addition, it is possible to improve the cleaning efficiency since it is possible to wipe the wood floor by Wipe brush.
【００５７】[0057]
【発明の効果】以上説明したように本発明によれば、上
ケース２０１及びケーシング２０３及び吸口継手部１０
４により構成された自在継手部の騒音を低減でき、掃除
時の静音化が達成でき実用的価値が高い。また吸込流路
内が整流される為ゴミの流路内での引っ掛かりが無く使
い勝手が良く取扱性の向上した電気掃除機を提供するこ
とができる。As described above, according to the present invention, the upper case 201, the casing 203, and the suction joint portion 10 are provided.
It is possible to reduce the noise of the universal joint formed by No. 4 and to achieve quietness during cleaning, which is of high practical value. In addition, since the inside of the suction flow path is rectified, it is possible to provide an electric vacuum cleaner which is free from dust being caught in the flow path and is easy to use and improved in handleability.
【図１】本発明の実施の形態の一例に係る吸口本体１０
１の縦断面図である。FIG. 1 is a mouthpiece body 10 according to an example of an embodiment of the present invention.
It is a longitudinal cross-sectional view of FIG.
【図２】従来の吸口本体１０１の縦断面図である。FIG. 2 is a vertical cross-sectional view of a conventional mouthpiece body 101.
【図３】図１の他の実施例の部分拡大断面図である。3 is a partially enlarged cross-sectional view of another embodiment of FIG.
【図４】図１の他の実施例の部分拡大斜視図である。FIG. 4 is a partially enlarged perspective view of another embodiment of FIG.
【図５】本発明の実施の形態の一例に係る騒音測定結果
である。FIG. 5 is a noise measurement result according to an example of the embodiment of the present invention.
【図６】自在継手部１１８の流路中央断面斜視図であ
る。FIG. 6 is a perspective view of a central section of a flow path of a universal joint section 118.
【図７】自在継手の流路断面積変化のグラフである。FIG. 7 is a graph showing changes in flow passage cross-sectional area of the universal joint.
【図８】吸口継手の平面図である。FIG. 8 is a plan view of a mouthpiece joint.
【図９】図８の側面図である。9 is a side view of FIG.
【図１０】図９におけるＡ−Ａ断面図である。10 is a cross-sectional view taken along the line AA in FIG.
【図１１】本発明の実施の形態の一例に係る騒音測定結
果である。FIG. 11 is a noise measurement result according to an example of the embodiment of the present invention.
【図１２】吸口継手の斜視図である。FIG. 12 is a perspective view of a mouthpiece joint.
【図１３】本発明の実施の形態の一例に係る騒音測定結
果である。FIG. 13 is a noise measurement result according to an example of the embodiment of the present invention.
【図１４】本発明の実施の形態の一例に係る電気掃除機
の外観の斜視図である。FIG. 14 is a perspective view of the appearance of the electric vacuum cleaner according to the example of the embodiment of the present invention.
【図１５】本実施の形態に係る吸口体１５０１から上ケ
ース２０１を外した状態の上面図である。FIG. 15 is a top view showing a state in which an upper case 201 is removed from a suction body 1501 according to the present embodiment.
【図１６】図１５における縦断面図である。16 is a vertical cross-sectional view of FIG.
【図１７】吸口体１５０１の側面図である。FIG. 17 is a side view of a suction body 1501.
【図１８】ケーシング２０３と吸口継手１０４との回動
動作を示す上面図である。FIG. 18 is a top view showing the rotating operation of the casing 203 and the mouthpiece joint 104.
【図１９】ケーシング２０３と吸口継手１０４の側面図
である。19 is a side view of the casing 203 and the mouthpiece joint 104. FIG.
【図２０】図１９におけるＧ−Ｇ断面図である。20 is a sectional view taken along line GG in FIG.
１０１…吸口本体、１０２…下ケース、１０４…吸口継
手、１０４ａ…円環部、１０４ｂ…窪み部分、１０５…
継手カバー、１１８…自在継手、２０１…上ケース、２
０２…吸気口、２０３…ケーシング、３０２…コの字型
ピース、３０３…平面部、３０６…凸部、４０１…吸気
流路、５０８…舌部、１５０５…吸口体、１８０３…凹
部、１８０４…ストッパー、１８０６…ストッパーカバ
ー。101 ... mouthpiece main body, 102 ... lower case, 104 ... mouthpiece joint, 104a ... annular part, 104b ... hollow part, 105 ...
Joint cover, 118 ... Universal joint, 201 ... Upper case, 2
02 ... Intake port, 203 ... Casing, 302 ... U-shaped piece, 303 ... Plane part, 306 ... Convex part, 401 ... Intake channel, 508 ... Tongue part, 1505 ... Suction body, 1803 ... Recessed part, 1804 ... Stopper , 1806 ... Stopper cover.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小田原 博志 茨城県日立市東多賀町一丁目１番１号 株式会社 日立製作所 電化機器事業部 内 (72)発明者 田島 泰治 茨城県土浦市神立町502番地 株式会社 日立製作所 機械研究所内 (56)参考文献 特開 平10−328097（ＪＰ，Ａ) 特開 昭53−101859（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) A47L 9/04 A47L 9/24 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Odawara 1-1-1 Higashitaga-cho, Hitachi-shi, Ibaraki Hitachi Ltd. Electric Appliances Division (72) Inventor Taiji Tajima 502 Kintate-cho, Tsuchiura-shi, Ibaraki Hitachi, Ltd., Mechanical Research Laboratory (56) Reference JP 10-328097 (JP, A) JP 53-101859 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) A47L 9/04 A47L 9/24
Claims (2)
体と、 該吸口本体に接続された自在継手部とを有し、 該自在継手部は、一端側が前記吸口本体に対して上下方
向に回動可能に接続されるケーシングと、 一端側が前記ケーシングの他端側に回動可能に接続さ
れ、他端側が延長管に接続され、前記吸口本体に対して
左右方向に回動可能な吸口継手とを備えた電気掃除機の
吸口体において、 前記自在継手部を床面に近づけた状態において、前記吸
口継手は前記ケーシングの下側に位置し、 前記吸口継手の吸込通路の下部内壁に、前記自在継手部
内の流路断面積変化を小さくするための凸部を形成した
こと特徴とする電気掃除機の吸口体。1. A suction port main body having a suction port for sucking dust, and a universal joint part connected to the suction port main body, wherein one end side of the universal joint part is vertically arranged with respect to the suction port main body. A casing that is rotatably connected, one end side of which is rotatably connected to the other end side of the casing, the other end side of which is connected to an extension pipe, and a suction joint that is rotatable in the left-right direction with respect to the suction body. In the suction body of the vacuum cleaner provided with, in a state in which the universal joint portion is brought close to the floor surface, the suction joint is located below the casing, the lower inner wall of the suction passage of the suction joint, the, A suction body for an electric vacuum cleaner, wherein a convex portion is formed to reduce a change in flow path cross-sectional area in the universal joint portion.
本体と、 該吸口本体に接続された自在継手部とを有し、 該自在継手部は、一端側が前記吸口本体に対して上下方
向に回動可能に接続されるケーシングと、 一端側が前記ケーシングの他端側に回動可能に接続さ
れ、他端側が延長管に接続され、前記吸口本体に対して
左右方向に回動可能な吸口継手とを備えた電気掃除機に
おいて、 前記自在継手部を床面に近づけた状態において、前記吸
口継手は前記ケーシングの下側に位置し、 前記吸口継手の吸込通路の下部内壁に、前記自在継手部
内の流路断面積変化を小さくするための凸部を形成した
ことを特徴とする電気掃除機。2. A cleaner body having a built-in electric blower, a hose connected to the cleaner body, and a suction body connected to the hose via an extension tube, wherein the suction body is dust. Has a suction port main body having a suction port for sucking air, and a universal joint part connected to the suction port main body, and one end side of the universal joint part is vertically rotatably connected to the suction port main body. And a casing having one end rotatably connected to the other end of the casing and the other end connected to an extension pipe, and a suction joint rotatable in the left-right direction with respect to the suction body. In the machine, in a state where the universal joint portion is brought close to the floor surface, the suction joint is located on the lower side of the casing, and on the lower inner wall of the suction passage of the suction joint, the flow passage cross-sectional area change in the universal joint portion is performed. To form a convex part to reduce Vacuum cleaner, characterized in that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19837199A JP3528689B2 (en) | 1999-07-13 | 1999-07-13 | Suction body of vacuum cleaner and vacuum cleaner having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19837199A JP3528689B2 (en) | 1999-07-13 | 1999-07-13 | Suction body of vacuum cleaner and vacuum cleaner having the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001025450A JP2001025450A (en) | 2001-01-30 |
| JP3528689B2 true JP3528689B2 (en) | 2004-05-17 |
Family
ID=16390008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19837199A Expired - Lifetime JP3528689B2 (en) | 1999-07-13 | 1999-07-13 | Suction body of vacuum cleaner and vacuum cleaner having the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3528689B2 (en) |
-
1999
- 1999-07-13 JP JP19837199A patent/JP3528689B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001025450A (en) | 2001-01-30 |
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