WO2021220619A1 - Tuyau d'extension pour aspirateur électrique, et aspirateur électrique doté dudit tuyau d'extension - Google Patents

Tuyau d'extension pour aspirateur électrique, et aspirateur électrique doté dudit tuyau d'extension Download PDF

Info

Publication number
WO2021220619A1
WO2021220619A1 PCT/JP2021/008928 JP2021008928W WO2021220619A1 WO 2021220619 A1 WO2021220619 A1 WO 2021220619A1 JP 2021008928 W JP2021008928 W JP 2021008928W WO 2021220619 A1 WO2021220619 A1 WO 2021220619A1
Authority
WO
WIPO (PCT)
Prior art keywords
vacuum cleaner
extension pipe
tubular portion
extension
thickness
Prior art date
Application number
PCT/JP2021/008928
Other languages
English (en)
Japanese (ja)
Inventor
遼 山谷
則和 伊藤
雅瑛 横田
寿之 田村
慶太 板垣
孔陽 川本
優志 土門
Original Assignee
日立グローバルライフソリューションズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日立グローバルライフソリューションズ株式会社 filed Critical 日立グローバルライフソリューションズ株式会社
Priority to CN202180021340.0A priority Critical patent/CN115297754A/zh
Publication of WO2021220619A1 publication Critical patent/WO2021220619A1/fr

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/24—Hoses or pipes; Hose or pipe couplings

Definitions

  • the present invention relates to an extension pipe of an electric vacuum cleaner and an electric vacuum cleaner.
  • Patent Document 1 proposes a technique of applying carbon to the material of an extension tube to make it lightweight and strong.
  • the extension pipe described in Patent Document 1 has a uniform wall thickness, and there is a problem that the strength is lowered when the wall thickness is reduced in order to further reduce the weight.
  • the present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide an extension pipe of an electric vacuum cleaner capable of reducing the weight without reducing the strength, and an electric vacuum cleaner provided with the extension pipe thereof.
  • the present invention has a cylindrical portion formed in a cylindrical shape, and the tubular portion has a base end side connecting portion that is directly or indirectly connected to the vacuum cleaner main body at one end of the tubular portion.
  • the other end of the tubular portion is provided with a tip-side connecting portion to which a suction port is connected, and the tubular portion is characterized by having an irregular pattern having a non-uniform thickness.
  • an extension tube of an electric vacuum cleaner and an electric vacuum cleaner capable of reducing the weight without reducing the strength.
  • FIG. 1 is a perspective view showing a vacuum cleaner provided with an extension pipe of the first embodiment.
  • the electric vacuum cleaner 1 is a canister type (cylinder type) vacuum cleaner, and is a vacuum cleaner main body 2, a hose portion 3, an operation pipe 4, an extension pipe 5, and a suction port 6 (suction). Including the tool).
  • the vacuum cleaner main body 2 includes an electric blower 20 that generates suction force, a dust collector 7 that stores dust collected by the suction force of the electric blower 20 and the like.
  • the dust collecting unit 7 is a paper pack type, a cyclone type, or the like.
  • One end of the hose portion 3 is connected to the connection port 11a of the vacuum cleaner main body 2 so as to communicate with the dust collecting portion 7 of the vacuum cleaner main body 2.
  • the other end of the hose portion 3 is connected to one end of the operation pipe 4.
  • the operation tube 4 is provided with a grip 4a or the like equipped with a hand operation switch SW or the like. By operating the hand operation switch SW of the operation tube 4, it is possible to switch the operation strength of the electric blower 20 and the like.
  • the extension tube 5 has a tubular portion 51 formed in a tubular shape (substantially cylindrical shape). At one end of the tubular portion 51 in the longitudinal direction (axial direction), a base end side connecting portion 52 connected to the operation pipe 4 (indirectly connected to the vacuum cleaner main body 2) and a suction port 6 are connected. It has a connection portion 53 on the tip side.
  • the suction port 6 is rotatably connected to, for example, a case 6a accommodating a rotary brush (not shown) that comes into contact with a surface to be cleaned (floor surface or the like), and the case 6a, and is connected to the tip end side of the extension pipe 5. It is composed of a joint portion 6b or the like that is detachably connected to the 53.
  • FIG. 2 is a perspective view showing an extension pipe of the first embodiment. Although the extension tube 5 that does not expand and contract is shown in FIG. 2, it may be applied to a stretchable tube.
  • the base end side connecting portion 52 has a cylindrical insertion portion 52a to be inserted into the operation tube 4. Further, the base end side connecting portion 52 has a pair of terminal portions 52b that are electrically connected to the operation tube 4. The terminal portion 52b is located outside the insertion portion 52a in the radial direction.
  • the tip side connecting portion 53 is formed with an opening 53a connected to the suction port 6 (see FIG. 1). Further, the tip side connecting portion 53 has a pressing type unlock button 53b for releasing the connection with the suction port 6 (see FIG. 1).
  • the material of the extension tube 5 reinforced plastic containing glass fiber, carbon resin containing carbon fiber, and the like can be mentioned. By using such a material, the strength of the product can be ensured even if the extension pipe 5 is formed to have a thin wall thickness to reduce the weight.
  • the present invention is not limited to those formed of a material containing reinforcing fibers such as glass fiber and carbon fiber, and may be formed of a synthetic resin containing no reinforcing fibers.
  • the tubular portion 51 between the base end side connecting portion 52 and the tip end side connecting portion 53 has a non-uniform thickness (thickness) and has an uneven surface (concavo-convex shape) formed by an irregular pattern. ) 51a (see FIG. 3) and a concave-convex surface (concave-convex shape) 51b (see FIG. 3) are formed. Since the extension pipe 5 is a member through which air passes, a hole-shaped extension pipe 5 is not formed on the outer peripheral surface of the extension pipe 5.
  • the optimum material density distribution of the uneven surfaces 51a and 51b is derived by topology optimization. In other words, by topology optimization, unnecessary parts of the structure of the extension pipe 5 are deleted (thinned). As a result, it is possible to generate a three-dimensional structure that can be reduced in weight without impairing the strength.
  • FIG. 3 is a schematic cross-sectional view showing an unsteady pattern of the extension pipe of the first embodiment.
  • uneven surfaces (concavo-convex portions) 51a and 51b are formed on the outer wall surface 51s and the inner wall surface 51t of the pipe.
  • the uneven surfaces 51a and 51b are not regular patterns but irregular patterns. That is, the concave-convex surface 51a has concave portions 55a, 55b, 55c and convex portions 56a, 56b, and the areas of the concave portions are different.
  • the concave-convex surface 51b (concave-convex portion) has concave portions 57a, 57b, 57c at positions corresponding to the concave portions 55a, 55b, 55c, and convex portions 58a, 58b at positions corresponding to the convex portions 56a, 56b.
  • the extension pipe 5 may have a configuration in which the recesses 55a to 55c and the recesses 57a to 57c do not face each other. Further, the convex portions 56a and 56b and the convex portions 58a and 58b may not face each other.
  • the recesses 55a to 55c and 57a to 57c are formed by forming the thickness (thickness) of the pipe wall of the extension pipe 5 to be thin.
  • the convex portions 56a, 56b, 58a, 58b are formed by forming the wall thickness (thickness) of the extension pipe 5 to be thicker than the wall thickness (thickness) of the concave portions 55a to 55c.
  • the extension pipe 5 is configured such that the patterns of the uneven surfaces 51a and 51b in the axial direction (longitudinal direction) become unsteady.
  • the uneven surfaces 51a and 51b are configured to have an unsteady pattern P not only in the axial direction but also in the circumferential direction of the extension pipe 5.
  • FIG. 4 is a schematic cross-sectional view when the wall thickness of the extension pipe of the first embodiment is subtracted.
  • the non-stationary pattern P (see FIG. 3) of the extension tube 5 is to reduce the wall thickness (pull: ⁇ d), for example, to form a recess 55a on the surface of the extension tube 5.
  • the method of reducing the wall thickness may be configured by forming a recess in the inner wall surface (back surface) 51t of the extension pipe 5, or as shown in FIG. 3, the extension pipe 5 It may be configured by forming recesses on both the outer wall surface 51s and the inner wall surface 51t.
  • FIG. 5 is a schematic cross-sectional view when the wall thickness of the extension pipe of the present embodiment is added.
  • the non-stationary pattern P (see FIG. 3) of the extension tube 5 is formed by increasing the wall thickness (addition: + d), for example, by forming a convex portion 56a on the surface of the extension tube 5. It is composed.
  • the method of increasing the wall thickness may be configured by forming a convex portion on the inner wall surface (back surface) of the extension pipe 5, or as shown in FIG. 3, the extension pipe. 5 may be configured by forming convex portions on both the outer wall surface 51s and the inner wall surface 51t.
  • 6A and 6B are schematic views showing evaluation conditions for lateral compression of the extension tube.
  • 7A and 7B are schematic views showing evaluation conditions for longitudinal compression of the extension tube.
  • 8A and 8B are schematic views showing the evaluation conditions for the deflection deformation of the extension pipe.
  • 9A to 9C are schematic views showing evaluation conditions for torsional deformation of the extension pipe.
  • the evaluation method shown below is an example and is not limited to the present embodiment, and some of them may be selected and evaluated.
  • FIGS. 6A and 6B when evaluating lateral compression, a load is applied to four points (A to D) of the extension pipe 5 for evaluation.
  • the vertical front direction of the paper surface is the upper surface of the extension tube 5.
  • the vertical front direction of the paper surface is the left side surface of the extension tube 5.
  • the evaluation of FIG. 6A assumes a case where a load is applied so as to simply crush the extension pipe 5 from the lateral direction.
  • the evaluation of FIG. 6B assumes the case where the extension pipe 5 is stepped on with a foot from above.
  • the proximal end side connecting portion 52 of the extension pipe 5 is on the upper side and the distal end side connecting portion 53 is on the lower side, and as shown by the white arrows, the proximal end side connecting portion 52 is connected to the distal end side. It is assumed that the button is pushed toward the unit 53.
  • FIGS. 7A and 7B when evaluating the longitudinal (axial) compression, a load is applied in the axial direction from the axial end surface 52c of the proximal end side connecting portion 52 (see FIG. 7B). , As shown by the broken line, the end face 53c in the axial direction of the tip side connecting portion 53 is restrained (see FIG. 7A) for evaluation.
  • FIG. 8A and 8B assume that the center of the extension pipe 5 in the longitudinal direction (axial direction) is pushed by hand. As shown by dots in FIG. 8A, the inner wall surface 53a1 of the tip end side connecting portion 53 of the extension pipe 5 is restrained, and as shown by dots in FIG. 8B, the outer wall surface of the proximal end side connecting portion 52 of the extension pipe 5 is restrained. The evaluation is made by applying a load to the center (white arrow) of the extension pipe 5 in the longitudinal direction (axial direction) while the 52a1 is restrained.
  • FIG. 9A to 9C assume a case where the mouthpiece 6 (see FIG. 1) is connected and twisted to the left and right.
  • the inner wall surface 53a1 of the tip end side connecting portion 53 of the extension pipe 5 is restrained, and as shown by dots in FIG. 9B, the outer wall surface of the proximal end side connecting portion 52 of the extension pipe 5 is restrained.
  • the outer wall surface 52a1 is evaluated by applying a load that twists in the counterclockwise direction.
  • the extension tube 5 having a non-uniform thickness and an unsteady pattern P is configured by the topology optimization. Then, by performing the evaluation tests shown in FIGS. 6A and 6B, 7A and 7B, 8A and 8B, and 9A to 9C, the extension tube 5 in which the uneven shape obtained by the topology optimization was obtained. Check whether or not is valid as a product.
  • the extension pipe 5 of the first embodiment has a cylindrical portion 51 formed in a cylindrical shape, and the tubular portion 51 is indirectly connected to the vacuum cleaner main body 2 at one end of the cylindrical portion 51.
  • the base end side connecting portion 52 to be specifically connected and the tip end side connecting portion 53 to which the suction port 6 is connected to the other end of the cylindrical portion 51 are provided, and the tubular portion 51 has a non-uniform thickness. It has an unsteady pattern P. According to this, the weight can be reduced without reducing the strength of the extension pipe 5.
  • the non-stationary pattern P is configured by subtracting the thickness of the cylindrical portion 51. According to this, it is possible to contribute to the weight reduction of the extension pipe 5.
  • the non-stationary pattern P is configured by adding the thickness of the cylindrical portion 51. According to this, the required strength of the extension pipe 5 can be secured.
  • the vacuum cleaner 1 of the first embodiment includes a vacuum cleaner main body 2 incorporating an electric blower 20 and an extension pipe 5 connected to the vacuum cleaner main body 2. According to this, the handleability of the vacuum cleaner 1 can be improved by further reducing the weight.
  • FIG. 10 is a cross-sectional view showing an extension pipe of the second embodiment.
  • an uneven surface 51a is formed on the outer wall surface (outer surface) 51s of the tubular portion 51.
  • the uneven surface 51a is composed of recesses 55a to 55c having a non-uniform thickness and formed of an unsteady pattern P, and convex portions 56a and 56b.
  • the inner wall surface (back surface) 51u of the extension pipe 5A is formed with a smooth surface (a surface without steps, a surface without unevenness) instead of the uneven surface shown in FIG.
  • the inner wall surface 51u is formed in a substantially straight line along the axial direction and a substantially circular shape along the radial direction.
  • the extension pipe 5A of the second embodiment has an uneven surface 51a on the outer wall surface 51s (outside) of the tubular portion 51 and a smooth surface on the inner wall surface 51u of the tubular portion 51. This makes it possible to prevent dust from being caught and prevent it from becoming a suction resistance.
  • FIG. 11 is a schematic view showing the density of the convex portion of the extension pipe of the third embodiment.
  • the density (denseness) of the convex portion 56a formed on the proximal end side connecting portion 52 side of one end in the axial direction (longitudinal direction) becomes sparse. It is configured as follows. Further, the extension pipe 5B is configured so that the density (denseness) of the convex portions 56a formed on the tip side connecting portion 53 side of the other end in the axial direction (longitudinal direction) becomes sparse.
  • the fact that the density of the convex portion 56a is sparse means that the area formed in the convex shape is small. As a result, it is possible to contribute to the weight reduction of the extension pipe 5B by reducing the wall thickness of the end portion where the strength can be relatively secured in the extension pipe 5B.
  • the extension pipe 5B is configured so that the density (denseness) of the convex portions 56a becomes dense in the center in the axial direction (longitudinal direction).
  • the density of the convex portions 56a means that the convexly formed area is formed more than both ends in the axial direction of the extension pipe 5B.
  • FIG. 12 is a cross-sectional view showing the uneven shape of the extension pipe of the fourth embodiment.
  • the sheet material 60 is integrally formed by insert molding.
  • the resin does not flow in the molding mold unless the wall thickness is to some extent. Therefore, as a method of forming the wall thickness as thin as possible, the extension pipe 5C is constructed by insert molding the sheet material 60 of another part.
  • the recess 55a of the cylindrical portion 51 is composed of the sheet material 60 as a separate part. According to this, the wall thickness of the recess can be made thin, and the weight can be further reduced. Further, if further weight reduction is required, the sheet material 60 is not limited to a material having a certain degree of rigidity, and may be a film-shaped material.
  • a case where a pattern P having a non-uniform thickness and an unsteady thickness is formed on the extension tube 5 by using topology optimization is an example.
  • it is not limited to the extension pipe 5, and the main body of the canister (cylinder type) vacuum cleaner, the main body of the stick vacuum cleaner, the main body of the handy vacuum cleaner, the main body of the robot vacuum cleaner, the mouthpiece, etc. are attached.
  • Topology optimization may also be applied to a product or the like to have an unsteady pattern P with a non-uniform thickness. Even in such a case, the weight can be reduced without reducing the strength.
  • Vacuum cleaner body Vacuum cleaner body 20 Electric blower 5,5A, 5B, 5C Extension pipe 51 Cylindrical part 51a, 51b Concavo-convex surface (concave and convex shape) 52 Base end side connection part 52a Insertion part 53 Tip side connection part 55a, 55b, 55c, 57a, 57b, 57c Concave part 56a, 56b, 58a, 58b Convex part P Unsteady pattern

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)

Abstract

Une partie cylindrique (51) est dotée d'une partie de raccordement côté extrémité de base qui est directement ou indirectement raccordée à un corps d'aspirateur au niveau d'une extrémité, et une partie de raccordement côté extrémité distale à laquelle une ouverture d'aspiration est raccordée au niveau de l'autre extrémité. La partie cylindrique (51) présente un motif irrégulier (P) dans lequel l'épaisseur n'est pas uniforme. Le motif irrégulier (P) est configuré en soustrayant de l'épaisseur la partie cylindrique (51). De plus, le motif irrégulier (P) est configuré en ajoutant à l'épaisseur la partie cylindrique (51).
PCT/JP2021/008928 2020-04-27 2021-03-08 Tuyau d'extension pour aspirateur électrique, et aspirateur électrique doté dudit tuyau d'extension WO2021220619A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202180021340.0A CN115297754A (zh) 2020-04-27 2021-03-08 电动吸尘器的延长管及具备该延长管的电动吸尘器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020078602A JP7355705B2 (ja) 2020-04-27 2020-04-27 電気掃除機の延長管およびその延長管を備えた電気掃除機
JP2020-078602 2020-04-27

Publications (1)

Publication Number Publication Date
WO2021220619A1 true WO2021220619A1 (fr) 2021-11-04

Family

ID=78278265

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/008928 WO2021220619A1 (fr) 2020-04-27 2021-03-08 Tuyau d'extension pour aspirateur électrique, et aspirateur électrique doté dudit tuyau d'extension

Country Status (3)

Country Link
JP (1) JP7355705B2 (fr)
CN (1) CN115297754A (fr)
WO (1) WO2021220619A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013009784A (ja) * 2011-06-29 2013-01-17 Hitachi Appliances Inc 電気掃除機
JP2018015299A (ja) * 2016-07-28 2018-02-01 シャープ株式会社 電気掃除機の延長管
JP2018202055A (ja) * 2017-06-09 2018-12-27 パナソニックＩｐマネジメント株式会社 延長管及びそれを用いた電気掃除機

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2603971B1 (fr) * 1986-09-12 1989-01-13 Nicoll Raccords Plastiques Perfectionnement aux tuyauteries d'installations de nettoyage central par aspiration
CN102679078B (zh) * 2011-03-16 2015-09-09 北汽福田汽车股份有限公司 混凝土输送管弯头
CN204986052U (zh) * 2015-08-17 2016-01-20 天津滨海利德制管有限公司 高强度抗氧化ppr管

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013009784A (ja) * 2011-06-29 2013-01-17 Hitachi Appliances Inc 電気掃除機
JP2018015299A (ja) * 2016-07-28 2018-02-01 シャープ株式会社 電気掃除機の延長管
JP2018202055A (ja) * 2017-06-09 2018-12-27 パナソニックＩｐマネジメント株式会社 延長管及びそれを用いた電気掃除機

Also Published As

Publication number Publication date
CN115297754A (zh) 2022-11-04
JP2021171395A (ja) 2021-11-01
JP7355705B2 (ja) 2023-10-03

Similar Documents

Publication Publication Date Title
CN107969989B (zh) 具有可折叠杆以提供存储构造的真空清洁装置
US3017654A (en) Vacuum cleaners
WO2021220619A1 (fr) Tuyau d'extension pour aspirateur électrique, et aspirateur électrique doté dudit tuyau d'extension
US7194784B2 (en) Floor cleaning apparatus with pivotal handle
KR20040010226A (ko) 가전제품용 관절식 조인트 및 상기 조인트를 포함하는가전제품
CA2707626A1 (fr) Accessoire de nettoyage de conduite pour aspirateur
JP3079871U (ja) テレスコピックパイプ及びそれを利用した真空掃除機の伸縮吸入管
KR100271702B1 (ko) 전기청소기의흡입구부재및이것을구비한전기청소기
US10085603B2 (en) Vacuum cleaner
JP5278925B1 (ja) 電気掃除機の補助用ホース
JP2018015299A (ja) 電気掃除機の延長管
KR200220658Y1 (ko) 진공 청소기용 호스
KR100414799B1 (ko) 전기 청소기용 호스 및 전기 청소기
JP2000107104A (ja) 携帯用掃除機の可撓性ホース
JP7388813B2 (ja) 清掃具用柄及び清掃具
JP4102791B2 (ja) 電気掃除機用吸引ノズル
US20240130588A1 (en) Vacuum Cleaner Conduit Equipped With A Hinge Device
JP4241596B2 (ja) アップライト型電気掃除機の延長管の接続構造
JP2021151322A (ja) 電気掃除機
JP4861392B2 (ja) 電気掃除機用吸込具のローラー
JPH0844Y2 (ja) 電気掃除機の吸込端部材
JP3855147B2 (ja) 電気掃除機のホース手元部の製造方法
JP3397932B2 (ja) 電気掃除機
CN117917225A (zh) 配备有铰接装置的吸尘器导管
TW202320690A (zh) 吸塵器用之管構件及具備管構件之吸塵器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21797693

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21797693

Country of ref document: EP

Kind code of ref document: A1