CN1281682A - Electric wacuum cleaner and hose for electric vacuum cleaner - Google Patents

Electric wacuum cleaner and hose for electric vacuum cleaner Download PDF

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Publication number
CN1281682A
CN1281682A CN00121689A CN00121689A CN1281682A CN 1281682 A CN1281682 A CN 1281682A CN 00121689 A CN00121689 A CN 00121689A CN 00121689 A CN00121689 A CN 00121689A CN 1281682 A CN1281682 A CN 1281682A
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CN
China
Prior art keywords
flexible pipe
outside
inboard
hose
electric
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
Application number
CN00121689A
Other languages
Chinese (zh)
Inventor
藤吉俊行
齐藤和雄
福岛定男
小林利造
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of CN1281682A publication Critical patent/CN1281682A/en
Pending legal-status Critical Current

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    • 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
    • A47L9/248—Parts, details or accessories of hoses or pipes
    • 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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/14—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum cleaning by blowing-off, also combined with suction cleaning
    • 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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/36—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back
    • A47L5/362—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back of the horizontal type, e.g. canister or sledge type
    • 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
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/04—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids for using the exhaust air for other purposes, e.g. for distribution of chemicals in a room, for sterilisation of the air
    • 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
    • A47L9/02—Nozzles
    • A47L9/08—Nozzles with means adapted for blowing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

A vacuum cleaner with a damage preventive hose, allowing exhaust air from an electric blower built in a cleaner body to be returned into a suction implement via a hose and a pipe. This vacuum cleaner has a suction passage formed in a hose 21, a connective pipe 32 and a suction implement 33 to be connected to a cleaner body 1 in which an electric blower 14 is built, and an exhaust passage serving for returning exhaust air from the electric blower 14. The hose 21 consists of an outside hose 22 and an inside hose 23 to form the exhaust passage and the suction passage, and the inside hose 23 is assembled to be resiliently supported in the outside hose 22.

Description

Electric dust collector and hose for electric vacuum cleaner
The present invention relates to the flexible pipe and the electric dust collector that use at electric dust collector, relate in particular to make from body of dust collector the electric dust collector and the flexible pipe of exhaust gas recirculation (circulation) formula that refluxes to suction fitting etc. via flexible pipe and pipe of the exhaust of built-in electric fan.
In general floor mobile model electric dust collector, make from body of dust collector the exhaust outlet row that forms of the whole comfortable body rear side of exhaust etc. of built-in electric fan to the outside, but because of the exhaust from electric fan is all discharged, so blow out consumingly to the outside.Therefore, take place stagnant dust on ground or carpet because of this exhaust wind kick up and in the room, spread bad.
In order to reduce this purposes such as outside exhaust wind or raising dust collecting effect that blow to, as from existing for example public clear 39-36553 communique or spy strictly according to the facts open flat 9-13579 communique etc. open as, proposed a kind of electric dust collector, formed air-breathing stream and will form from the exhaust flow path of part or all backflow of the exhaust of electric fan at the flexible pipe, connecting piece and the suction fitting that link with body of dust collector.
In above-mentioned electric dust collector, flexible pipe and connecting piece are constituted duplex, form air-breathing stream in the inboard, form exhaust flow path in the outside, adopt under the situation of concentrically ringed duplex at snake abdomen shape flexible pipe, outside flexible pipe is a major diameter, and inboard flexible pipe is a minor diameter.
The member of the length of the band shape that will form with resin because of general snake abdomen shape flexible pipe is wound into tubular, with the connecting portion welding of the member of adjacent length and form helical form, so the flexible pipe that forms minor diameter is vulnerable to the power of shrinking at tube axial direction than forming large diameter flexible pipe, the flexible pipe of minor diameter has and is easy to the character of shrinking at tube axial direction along with the time.
Therefore, shown in above-mentioned prior art, flexible pipe adopts duplex, inboard flexible pipe and outside hose set are dressed up length when identical, then under the situation of shrinking, along with the contraction of inboard flexible pipe because of aging and inboard flexible pipe, be subjected to the power that stretches to prolonging direction from outside flexible pipe because of inboard flexible pipe, and outside flexible pipe is subjected to the power of shrinkage direction, so inboard flexible pipe, outside flexible pipe all become the state that always bears load, and the problem that has the durability of inboard flexible pipe, outside flexible pipe to reduce.
The object of the present invention is to provide a kind of electric dust collector, make from body of dust collector the exhaust of built-in electric fan via flexible pipe and pipe to backflows such as suction fittings, have and can prevent to pass in time and damaged flexible pipe.
Hose for electric vacuum cleaner of the present invention is made of outside flexible pipe and inboard flexible pipe, and the flexible hose that each flexible pipe forms the connecting portion welding after being reeled by member that will be long tubular constitutes, and it is characterized in that: make inboard flexible pipe lax in the flexible pipe of the described outside.
Again, hose for electric vacuum cleaner of the present invention is made of outside flexible pipe and inboard flexible pipe, and after each flexible pipe is reeled by member that will be long the connecting portion welding is formed tubular flexible hose, constitute at distolateral first tube connector that sets of described outside flexible pipe and inboard flexible pipe and at another distolateral second tube connector that sets of outside flexible pipe and inboard flexible pipe, it is characterized in that: make inboard flexible pipe longer than described outside flexible pipe.
In addition, electric dust collector of the present invention is to form air-breathing stream and will form from the exhaust flow path of the exhaust gas recirculation of electric fan at the flexible pipe, connecting piece and the suction fitting that link with the body of dust collector of built-in electric fan, it is characterized in that: constitute described flexible pipe with outside flexible pipe and inboard flexible pipe, form exhaust flow path and air-breathing stream, and make inboard flexible pipe lax in the flexible pipe of the described outside.
Again, electric dust collector of the present invention is to form air-breathing stream and will form from the exhaust flow path of the exhaust gas recirculation of electric fan at the flexible pipe, connecting piece and the suction fitting that link with the body of dust collector of built-in electric fan, it is characterized in that: described flexible pipe is by outside flexible pipe, inboard flexible pipe, constitute at distolateral first tube connector that sets of outside flexible pipe and inboard flexible pipe and at another distolateral second tube connector that sets of outside flexible pipe and inboard flexible pipe, form exhaust flow path and air-breathing stream, and make inboard flexible pipe longer than described outside flexible pipe.
Preferably form the inspiratory flow road and between described outside flexible pipe and described inboard flexible pipe, form exhaust flow path by described inboard flexible pipe.
Brief description of drawings is as follows:
Fig. 1 is the side cut away view of the unitary construction of expression electric dust collector of the present invention, omits the part midway of flexible pipe;
Fig. 2 is the amplification profile of the body part of this electric dust collector;
Fig. 3 is the amplification profile that has connected the state of flexible pipe at the base side hose transition of this electric dust collector;
Fig. 4 is the profile of base side hose transition under the state that has omitted flexible pipe;
Fig. 5 is the part cutaway view of the flexible pipe of this electric dust collector;
Fig. 6 is the part cutaway view at the outside of Fig. 5 flexible pipe;
Fig. 7 is the part cutaway view at the inboard flexible pipe of Fig. 5;
Fig. 8 is the profile of the portion of holding of this electric dust collector;
Fig. 9 is the profile of this prolongation pipe.
According to the description of drawings embodiments of the invention.
Label 1 is a body of dust collector, as shown in Figure 2, is made of upper casing 2, lower casing 3 and dust collection cover 4, forms the flexible pipe connector 5 that is connected with base side hose transition 17 described later at the front side of body of dust collector 1, and the steam vent 6 of shape is stitched in side formation in the wings.Bottom in this body of dust collector 1 utilizes spaced walls 7 to be divided into upper space in the body of dust collector 1, forms and exhaust flow path B1 that this flexible pipe connector 5 is communicated with and and the outside exhaust flow path C that is communicated with of this steam vent 6.At these spaced walls 7 upright differentiation walls 8 that the space region above the spaced walls 7 are divided into front and back of establishing.
Label 9 is at the formed dust storage chamber of the front side of this differentiation wall 8, and side forms a flexible pipe insertion mouthful 9a and 5 one-tenth concentric circles of this flexible pipe connector forwardly.To collect into disassembled and assembled freely to the dust bag install bin 11 that dust bag 10 is fixed into disassembled and assembled freely in this dust storage chamber 9, make to be contained under the state of dust storage chamber 9 at this dust bag install bin 11, the flexible pipe of the opening of dust bag 10 and described dust storage chamber 9 inserts mouthful 9a in opposite directions.
Label 12 is the micronic filters that are contained in this differentiation wall 8, is positioned at the rear side of dust bag 10, removes fine dust.
Label 13 is the electric fan boxrooms that form at the rear side of distinguishing wall 8, and electric fan 14 is equipped with in inside.Lower side at this electric fan boxroom 13 is formed with opening 13, with electric fan boxroom 13 and exhaust flow path B1 and outside exhaust flow path C connection, utilize the upright rib 15 of being located at lower casing 3 and opening 13a being separated will be through driving electric fan 14 from the bypassing exhaust of electric fan 14, from this opening 13a via exhaust flow path B1 guiding flexible pipe connector 5 sides, and a part from this opening 13a via outside exhaust flow path C, be located at steam vent 6 discharge filter 16 from steam vent 6 rows outside body of dust collector 1.
Label 17 is the base side hose transitions that are connected and are contained in flexible pipe connector 5 with flexible pipe 21 described later, as shown in Figures 3 and 4, adopt by columnar outboard tube 18 and the duplex that utilizes the integrally formed inside tube of a plurality of ribs 19a 19 to constitute in this outboard tube 18.
In the distolateral formation that is contained in flexible pipe connector 5 of described outboard tube 18 be located at the card claw stop 18a that is ended by fastener 5a card of flexible pipe connector 5, and distolaterally be formed obliquely screw-shaped outer ribs 18b with respect to tube axial direction at another.
Described inside tube 19 be contained in flexible pipe connector 5 one distolateral to insert mouthful 9a from flexible pipe outstanding to dust storage chamber 9 in, form than outboard tube 18 length.And, another of this inside tube 19 be distolateral also forms longer than outboard tube 18, outer circumferential side form and the outer ribs 18b of outboard tube 18 towards the interior side rib 19b of equidirectional inclination.Label 20 is columnar lids of being arranged to cover the coupling part of base side hose transition 17 and flexible pipe 21.
Described base side hose transition 17 ends through flexible pipe connector 5 cards with described card claw stop 18a and described body of dust collector 1, the inside tube 19 of described base side hose transition 17 is given prominence in dust storage chamber 9 also and connection in the dust storage chamber 9, become air-breathing stream A2 in the inside tube 19.Again, the exhaust flow path B1 in outboard tube 18 and the body of dust collector 1 is communicated with, and becomes exhaust flow path B2 between outboard tube 18 and the inside tube 19.
Label 21 is that an end is contained in base side hose transition 17, and the other end is contained in the flexible pipe of hose transition 27 described later, as shown in Figure 5, and the duplex that serve as reasons outside flexible pipe 22 and inboard flexible pipe 23 constitute.
This outside flexible pipe 22 forms tubulose as shown in Figure 6 through the member that will form banded length is wound into helical form, at the central portion of the width of long member and the spiral helicine prominent bar 22b of each self-forming of junction surface 22a, the 22c of this long member.
In the present embodiment, long member forms with translucent resin (is the polystyrene synthetic rubber at present embodiment), and prominent bar 22b, 22c form after resin (is polypropylene at present embodiment) has added milky colouring agent.
Pretend coil 22d, 22e in separately at this prominent bar 22b, 22c into the electric conductivity of holding wire.Zinc-plated at this coil 22d, 22e, under the state in coil 22d, 22e are equipped on milky prominent bar 22b, 22c, be difficult to see coil 22d, 22e.
This outside flexible pipe 22 will set in advance coil 22e and as cover the member that has formed the length of prominent bar 22c as this coil 22e and be wound into helical form, a side that is wound into the member that makes coil 22e and adjacent length simultaneously is that connecting portion 22a departs from, also cover coil 22d with the milky resin that becomes prominent bar 22b, and through the connecting portion 22a thermal welding of the member of adjacent length is formed.
Because of the translucent resin of outside flexible pipe 22 usefulness forms, and prominent bar 22b, 22c form with milky, thus can make the outward appearance of flexible pipe 21 seem little, and be difficult to see as coil 22d, the 22e of holding wire, can improve outward appearance.Again, because of coil 22d, 22e as holding wire are difficult to see, so can suppress user's sense of insecurity.
In addition, because of coil 22d, 22e zinc-plated, so more unshowy in forming milky prominent bar 22b, 22c, can more improve outward appearance.Again, be equipped on the position of the connecting portion 22a that departs from long member because of coil 22d, 22e, so when outside flexible pipe 22 forms, even under the situation that the gapped state of the member of adjacent length connects, coil 22d, 22e also not laterally flexible pipe 22 inboards expose, can prevent that coil 22d, 22e short circuit etc. are bad.
And, inboard flexible pipe 23 as shown in Figure 7, through will long member being wound into helical form and forming tubulose, at the central portion of the width of long member and the spiral helicine teat 23b of each self-forming of junction surface 23a, the 23c of this long member.
Described inboard flexible pipe 23, in the present embodiment, long member is used through painted resin (polystyrene synthetic rubber) formation of interpolation colouring agent opaque, and prominent bar 22b, 22c also use and be somebody's turn to do homochromy resin (polypropylene) formation of long member.
Inboard flexible pipe 23 is also the same with this outside flexible pipe 22, and the member that has been pre-formed the length of prominent bar 23c is wound into helical form, and with the resin that becomes the bar 23b that dashes forward the connecting portion 22a thermal welding of the member of adjacent length is formed.
Flexible pipe 21 at first is screwed into inboard flexible pipe 23 interior side rib 19b, but this moment, because of distolateral distolateral outstanding than outboard tube 18 of the connection flexible pipe 21 of inside tube 19, so insert installation after can once making inboard flexible pipe 23 hook this ledge.Therefore, inboard flexible pipe 23 is installed easily.
Secondly, the same with the situation of inboard flexible pipe 23, outside flexible pipe 22 is screwed into outer ribs 18b, finish the installation of 21 pairs of base side hose transitions 17 of flexible pipe.At this moment, in the inboard flexible pipe 23 and the air-breathing stream A2 of base side hose transition 17 be communicated with, become air-breathing stream A3, and between outside flexible pipe 22 and the inboard flexible pipe 23 and the exhaust flow path B2 of base side hose transition 17 be communicated with, become exhaust flow path B3.
This inboard flexible pipe 23 is made as longer than outside flexible pipe, with the two ends of inboard flexible pipe 23 and outside flexible pipe 22 separately with base side hose transition 17 and hold under the state that the hose transition 27 of portion 24 is connected, as shown in Figure 5, be assembled into the state that makes inboard flexible pipe 23 in outside flexible pipe 22, relax.
Label 24 is that at one end side connects flexible pipe 21, and in the portion of holding of another distolateral installation connecting piece 32 described later, by the handle portion 35 that connecting piece 32 is installed, and at one end side and this handle portion 35 connect into and freely rotate and in another distolateral hose transition 27 formations that are connected flexible pipe 21.
This hose transition 27 adopts by columnar outboard tube 28 and with ribs 29a and the duplex that these outboard tube 28 integrally formed inside tube 29 constitute, and is provided with and covers 31 to cover connection flexible pipe 21 sides.
The outer ribs 18b of each self-forming of periphery of this outboard tube 28 and inside tube 29 and described base side hose transition 17 and in the same outer ribs 28a that tilts of side rib 19b reach in side rib 29a, because of the outside flexible pipe 22 and the inboard flexible pipe 23 of flexible pipe 21 being installed towards equidirectional twisting, so assembling operation is easy.
At this moment, the exhaust flow path B3 with flexible pipe 21 between outboard tube 28 and the inside tube 29 is communicated with, and becomes exhaust flow path B4.Again, the air-breathing stream A3 connection in the inside tube 29 and in the flexible pipe 21 becomes air-breathing stream A4.
Described handle portion 35 is made of the tube 25 of ヘ font and the handle 26 that extends above tube 25, forms the installing port 25a that connecting piece 32 is installed, and folder 25b is set on the top of installing port 25a.Again, be communicated with at inner and installing port 25a, form the cylindrical portion 30 of the end of inserting this inside tube 29,30 air-breathing stream A4 interior and inside tube 29 are communicated with cylindrical portion, become air-breathing stream A5, and with the outside of cylindrical portion 30 with hold between the periphery of portion 24 and be communicated with, as exhaust flow path B5 with the exhaust flow path B4 that forms by inside tube 29 and outboard tube 28.
Label 32 is and presss from both sides the connecting piece that the 25b card ends and be contained in the installing port 25a of the portion of holding 24, forms through linking 2 pipe 32a.This connecting piece 32 as shown in Figure 9, constitute by the outside cylindrical portion 32b of cross section approximate circle shape with the integrally formed inboard cylindrical portion 32c of this outside cylindrical portion 32b off-centre and top and outside cylindrical portion 32b, outside cylindrical portion 32b and inboard cylindrical portion 32c form half moon-shaped space.And, when this connecting piece 32 was contained in the portion 24 of holding, inboard cylindrical portion 32c and the air-breathing stream A5 that holds portion 24 were communicated with, and form air-breathing stream A6 in inside, and be communicated with the exhaust flow path B5 of the portion of holding 24 between outside cylindrical portion 32b and the inboard cylindrical portion 32c, form exhaust flow path B6.
Again, because of the exhaust by described exhaust flow path B6 be via the dust bag 10 of body of dust collector 1 or micronic filter 12 filterings the peace and quiet air of dust, so be conceived to and form cross section approximate circle shape this point as considering lint stoppage as the inboard cylindrical portion 32c, in the present embodiment as above-mentioned that this exhaust flow path B6 is made as the cross section is approximate crescent, cylindrical portion 32b forms cross section approximate circle shape with the outside, with connecting piece 21 miniaturizations.
Label 33 is the suction fittings that are connected with connecting piece 32, and tube connector 33a, the 33b that is connected with connecting piece 32 forms the duplex of concentric circles, adopts the shape the same with connecting piece 32 with the telescoping part of connecting piece 32.
And, when using as constituted above electric dust collector, through the suction of electric fan 14, the mixing that sucks from suction fitting 33 air-breathing stream A5, the air-breathing stream A3 of flexible pipe 21 of air by connecting piece 32 of dust, be inhaled in the body of dust collector 1.In body of dust collector 1, with dust bag 10 filtering dust, the air via micronic filter 12 cleaningizations is sucked by electric fan 14 again, cools off this electric fan 14.
And, to discharge to the outside from the steam vent 6 of body of dust collector 1 from the part of the exhaust of electric fan 14, other are from the exhaust flow path B1 of the body of dust collector 1 exhaust flow path B3 by flexible pipe 21.At this moment, because of the direction of the teat 23 of the direction of teat 22b, the 22c of outside flexible pipe 22 and inboard flexible pipe 23 forms equidirectional, so teat 23 caused air permeance resistance for flow air between outside flexible pipe 22 and inboard flexible pipe 23 reduce, and can be suppressed at the interior loss of exhaust flow path B3 of flexible pipe 21.
And behind the exhaust flow path B3 by flexible pipe 21, by the exhaust flow path B6 of connecting piece 32, the dust that refluxes and kick up because of this exhaust wind to suction fitting 33 circulates to the air-breathing stream A6 of connecting piece 32 together again.
Through as an above-mentioned part that makes exhaust reflux, the exhaust wind that blows out to the outside reduces and dies down, and kicks up so can be suppressed in the cleaning dust in room effectively.
Inboard flexible pipe 23 is made as longer than outside flexible pipe, with the two ends of inboard flexible pipe 23 and outside flexible pipe 22 separately with base side hose transition 17 and hold under the state that the hose transition 27 of portion 24 is connected, be assembled into the state that inboard flexible pipe 23 relaxes in outside flexible pipe 22, so inboard flexible pipe 23 because of aging situation of shrinking under, can not apply load to outside flexible pipe 22 yet, available inboard flexible pipe 23 itself absorbs and shrinks, and can prevent the breakage of outside flexible pipe 22 and inboard flexible pipe 23.
As shown in this embodiment, flexible pipe is being adopted in the structure of duplex for the exhaust gas recirculation that makes electric fan 14, even because of inboard flexible pipe 23 breakages also be difficult to confirm, so as shown in this embodiment, can prevent that through inboard flexible pipe 23 being assembled into lax state formation the structure of inboard flexible pipe 23 breakages from being epochmaking.
In addition, though owing to make inboard flexible pipe 23 lax in outside flexible pipe 22, cross sectional shape between inboard flexible pipe 23 and the outside flexible pipe 22 can be out of shape, but because of with in the inboard flexible pipe 23 as air-breathing stream, with between inboard flexible pipe 23 and the outside flexible pipe 22 as the exhaust flow path that does not contain dust, so the dust obstruction can not take place in outside flexible pipe 22.
Because of the coiling direction with the coiling direction of inboard flexible pipe 23 and outside flexible pipe 22 be made as equidirectional, so inboard flexible pipe 23 and outside flexible pipe 22 directions flexible or that easily reverse become equidirectional.Therefore, in body of dust collector 1 used, flexible pipe 21 was crooked or when reversing, because of outside flexible pipe 22 and inboard flexible pipe 23 are followed the trail of the ground bending each other or reversed, so the outside flexible pipe 22 and inboard flexible pipe 23 are for separately crooked or do not reverse and can resist mutually, guaranteed the flexibility of flexible pipe 21.
If according to a first aspect of the present invention, though inboard flexible pipe because of aging situation of shrinking under, can not apply load, available inboard flexible pipe absorption contraction itself, flexible pipe breakage outside can preventing to outside flexible pipe yet.
Again, though outside flexible pipe because of aging situation of extend under, also because of the assembling stage at flexible pipe is set as lax state with inboard flexible pipe, thus inboard flexible pipe can adapt to outside the elongation of flexible pipe, can prevent inboard flexible pipe breakage.
If according to a second aspect of the present invention, though inboard flexible pipe because of aging situation of shrinking under, can not apply load, available inboard flexible pipe absorption contraction itself, flexible pipe breakage outside can preventing to outside flexible pipe yet.
Again, though outside flexible pipe because of aging situation of extend under, also because of inboard blown tubular become longer than outside flexible pipe, so inboard flexible pipe can adapt to outside the elongation of flexible pipe, can prevent inboard flexible pipe breakage.
If according to a third aspect of the present invention, though inboard flexible pipe because of aging situation of shrinking under, can not apply load, available inboard flexible pipe absorption contraction itself, flexible pipe breakage outside can preventing to outside flexible pipe yet.
Again, though outside flexible pipe because of aging situation of extend under, also because of inboard blown tubular become longer than outside flexible pipe, so inboard flexible pipe can adapt to outside the elongation of flexible pipe, can prevent inboard flexible pipe breakage.
If according to a fourth aspect of the present invention, though inboard flexible pipe because of aging situation of shrinking under, can not apply load, available inboard flexible pipe absorption contraction itself, flexible pipe breakage outside can preventing to outside flexible pipe yet.
Again, though outside flexible pipe because of aging situation of extend under, also because of inboard flexible pipe is set to loose state in the assembling stage of flexible pipe, thus inboard flexible pipe can adapt to outside the elongation of flexible pipe, can prevent inboard flexible pipe breakage.
If according to a fifth aspect of the present invention, though inboard flexible pipe because of aging situation of shrinking under, can not apply load, available inboard flexible pipe absorption contraction itself, flexible pipe breakage outside can preventing to outside flexible pipe yet.
Again, though outside flexible pipe because of aging situation of extend under, also because of the assembling stage at flexible pipe is set as lax state with inboard flexible pipe, thus inboard flexible pipe can adapt to outside the elongation of flexible pipe, can prevent inboard flexible pipe breakage.
In addition, though because of making inboard flexible pipe lax in the flexible pipe of the outside, cross sectional shape between inboard flexible pipe and the outside flexible pipe can be out of shape, but because of with in the inboard flexible pipe as air-breathing stream, with between inboard flexible pipe and the outside flexible pipe as the exhaust flow path that does not contain dust, block so dust can not take place in the flexible pipe of the outside.

Claims (5)

1. a hose for electric vacuum cleaner is made of outside flexible pipe and inboard flexible pipe, and the flexible hose that each flexible pipe forms the connecting portion welding after being reeled by member that will be long tubular constitutes,
It is characterized in that:
Make described inboard flexible pipe lax in the flexible pipe of the described outside.
2. hose for electric vacuum cleaner, constitute by outside flexible pipe and inboard flexible pipe, and after each flexible pipe is reeled by member that will be long the connecting portion welding is formed tubular flexible hose, constitute at distolateral first tube connector that sets of described outside flexible pipe and inboard flexible pipe and at another distolateral second tube connector that sets of outside flexible pipe and inboard flexible pipe
It is characterized in that:
Make described inboard flexible pipe longer than described outside flexible pipe.
3. electric dust collector, flexible pipe, connecting piece and the suction fitting that links at the body of dust collector with built-in electric fan form air-breathing stream and will form from the exhaust flow path of the exhaust gas recirculation of electric fan,
It is characterized in that:
Constitute described flexible pipe with outside flexible pipe and inboard flexible pipe, form exhaust flow path and air-breathing stream, and make described inboard flexible pipe lax in the flexible pipe of the described outside.
4. electric dust collector, flexible pipe, connecting piece and the suction fitting that links at the body of dust collector with built-in electric fan form air-breathing stream and will form from the exhaust flow path of the exhaust gas recirculation of electric fan,
It is characterized in that:
Described flexible pipe is by outside flexible pipe, inboard flexible pipe, constitute at distolateral first tube connector that sets of outside flexible pipe and inboard flexible pipe and at another distolateral second tube connector that sets of outside flexible pipe and inboard flexible pipe, form exhaust flow path and air-breathing stream, and make described inboard flexible pipe longer than described outside flexible pipe.
5. as claim 3 or 4 described electric dust collectors, wherein form the inspiratory flow road and between described outside flexible pipe and described inboard flexible pipe, form exhaust flow path at described inboard flexible pipe.
CN00121689A 1999-07-23 2000-07-21 Electric wacuum cleaner and hose for electric vacuum cleaner Pending CN1281682A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP20943399A JP4201437B2 (en) 1999-07-23 1999-07-23 Vacuum cleaner and vacuum cleaner hose
JP209433/1999 1999-07-23

Publications (1)

Publication Number Publication Date
CN1281682A true CN1281682A (en) 2001-01-31

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ID=16572791

Family Applications (1)

Application Number Title Priority Date Filing Date
CN00121689A Pending CN1281682A (en) 1999-07-23 2000-07-21 Electric wacuum cleaner and hose for electric vacuum cleaner

Country Status (3)

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JP (1) JP4201437B2 (en)
KR (1) KR100346657B1 (en)
CN (1) CN1281682A (en)

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CN118058646B (en) * 2024-04-22 2024-06-28 山西辉能科技有限公司 Pneumatic dust collection device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI793253B (en) * 2018-01-29 2023-02-21 日商東京威力科創股份有限公司 Flexible pipe and temperature control system
CN110710923A (en) * 2018-07-11 2020-01-21 尚科宁家（香港）股份有限公司 Extension tube for dust collector

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JP4201437B2 (en) 2008-12-24
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