CN110891467A - Connection hose for electric vacuum cleaner and electric vacuum cleaner having the same - Google Patents

Abstract

Provided are a connecting hose for an electric vacuum cleaner, which can improve assembling workability by reducing the number of parts and improve operability by reducing the weight, and an electric vacuum cleaner having the same. A connection hose of an electric vacuum cleaner is characterized by comprising: a flexible hose section having a hose base end connected to a cleaner body incorporating an electric blower; a handle portion attached to a hose tip portion of the flexible hose portion; an operation portion having an operation button provided on the handle portion; an electric wiring unit that transmits a command signal from the operation button of the operation unit to the cleaner main body; the flexible hose portion has a first electrode mounting portion provided on an outer peripheral surface of a distal end portion of the hose, and the handle portion has: a connection tube part which is rotatably fitted into the distal end part of the flexible tube part; a handle main body portion having the operation portion and coupled to the connection tube portion; a second electrode mounting portion provided on the handle main body portion, the electric wiring portion including: an annular first electrode attached to the first electrode attachment portion of the flexible tube; and a second electrode slidably attached to the second electrode attachment portion of the handle portion in a circumferential direction of the first electrode.

Description

Connection hose for electric vacuum cleaner and electric vacuum cleaner having the same

Technical Field

The present invention relates to a connection hose for an electric vacuum cleaner and an electric vacuum cleaner equipped with the connection hose.

Background

As a conventional vacuum cleaner, patent document 1 discloses a cylinder type vacuum cleaner including: a cleaner main body in which an electric blower is built; a connection hose detachably connected to the cleaner main body; an extension pipe detachably connected to the connection hose; and a suction port body detachably connected to the extension pipe.

In the electric vacuum cleaner of patent document 1, the connection hose includes: a flexible hose part having a hose base end part connected to the cleaner body; a handle portion attached to a hose tip portion of the flexible hose portion; an operation part having an operation button provided on the handle part; and an electric wiring unit for transmitting a command signal from an operation button of the operation unit to the cleaner body, wherein the flexible hose unit and the handle unit are configured to be relatively rotatable.

The flexible hose portion has an annular electrode mounting groove provided on an outer peripheral surface of a distal end portion of the hose.

Further, the handle portion includes: a connection tube part (a handle lower part) which is rotatably inserted into the hose tip part of the flexible hose part; a handle main body (a handle upper member and a middle member) having an operation portion coupled to the connection tube portion; and a contact cover (a member for pressing the connection terminal) provided between the handle body and the connection tube. In addition, the electric wiring part comprises: an annular conductor provided in the electrode mounting groove of the flexible tube; and a contact electrode slidably attached to the contact cover of the handle portion in a circumferential direction of the annular conductor.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2013-59525

Disclosure of Invention

Problems to be solved by the invention

In the conventional cylinder type vacuum cleaner, as in patent document 1, since the contact cover to which the contact electrode is attached to the handle main body by a screw, the number of parts increases to lower the assembling workability, and the weight of the user gripping the handle increases to lower the operability.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a connection hose for an electric vacuum cleaner, which can improve assembly workability by reducing the number of components and improve operability by reducing the weight, and an electric vacuum cleaner having the connection hose.

Means for solving the problems

As described above, according to the present invention, there is provided a connection hose for an electric vacuum cleaner, comprising: a flexible hose part having a hose base end part connected to a cleaner body having an electric blower therein; a handle portion attached to a hose tip portion of the flexible hose portion; an operation portion having an operation button provided on the handle portion; an electric wiring unit that transmits a command signal from the operation button of the operation unit to the cleaner main body;

the flexible hose portion has a first electrode mounting portion provided on an outer peripheral surface of a distal end portion of the hose,

the handle portion has: a connection tube part which is rotatably fitted into the distal end part of the flexible tube part; a handle main body portion having the operation portion and coupled to the connection tube portion; a second electrode mounting portion provided on the handle main body portion,

the electric wiring part comprises: an annular first electrode attached to the first electrode attachment portion of the flexible tube; and a second electrode attached to the second electrode attachment portion of the handle portion so as to slide in a circumferential direction of the first electrode.

In addition, according to another aspect of the present invention, there is provided an electric vacuum cleaner including a cleaner main body having an electric blower therein, and the connection hose connected to the cleaner main body.

Advantageous effects

According to the connection hose of the electric vacuum cleaner of the present invention, in the structure in which the handle portion and the flexible hose portion are coupled to each other so as to be relatively rotatable, the second electrode mounting portion is provided in the handle body portion of the handle portion, and the second electrode that slides in the circumferential direction on the annular first electrode on the flexible hose portion side is mounted on the second electrode mounting portion. According to this configuration, since the contact cover and the screw for attaching the contact cover to the handle portion, which are conventionally required, are omitted, the workability of assembling the connection hose is improved, and the weight of the handle portion gripped by the user is reduced, thereby improving the workability.

Drawings

Fig. 1 is a perspective view showing a first embodiment of an electric vacuum cleaner including a connection hose according to the present invention.

Fig. 2 is a left side view showing a handle portion of the connection hose according to the first embodiment.

Fig. 3 is a left side sectional view of the connection hose of fig. 2.

Fig. 4 shows a state in which the handle body portion of the first embodiment is removed, (a) is a perspective view, and (B) is a plan view.

Fig. 5 shows a lower case of a handle body portion of a handle portion according to a first embodiment, where (a) is a perspective view seen from below and (B) is a bottom view.

Fig. 6 shows a lower case of a handle body portion of a handle portion according to a first embodiment, where (a) is a perspective view seen from above and (B) is a plan view.

Fig. 7 is a lower case with a second electrode showing a handle body portion of the handle portion of the first embodiment, and (a) is a perspective view seen from below, and (B) is a bottom view.

Fig. 8 is a sectional view showing a state in which the second electrode of the first embodiment is mounted to the second electrode mounting part by thermal welding.

Fig. 9 is a sectional view showing a state in which the second electrode of the second embodiment is mounted by insert molding to the second electrode mounting portion.

Detailed Description

(first embodiment)

(constitution of electric vacuum cleaner)

Fig. 1 is a perspective view showing a first embodiment of an electric vacuum cleaner having a connection hose according to the present invention. As shown in fig. 1, an electric vacuum cleaner 1 according to a first embodiment includes: a cleanermain body 10; aconnection hose 20 detachably connected to thecleaner body 10; anextension tube 30 detachably connected to theconnection hose 20; and a suction port body 40 detachably connected to theextension pipe 30.

Thecleaner body 10 includes: adriving device 11 with an electric blower and a control substrate built therein, and a cyclonetype dust cup 12 detachably mounted on thedriving device 11. A power cord for supplying electric power from the commercial power to the electric vacuum cleaner 1 is retractably wound inside thedrive device 11. Instead of the power supply line, a battery may be provided in thedrive device 11. Thedust cup unit 12 is provided with aconnector 12a, and theconnector 12a is detachably connected to ahose base end 21a of aflexible hose part 21 of theconnection hose 20 to be described later₁。

Theconnection hose 20 includes: theflexible hose part 21; ahandle part 22 attached to thehose tip part 21a of the flexible hose part 21₂(ii) a Anoperating portion 23 having twooperating buttons 23a, 23b provided on thehandle portion 22; an unillustrated electrical wiring unit that transmits command signals from the operation buttons of theoperation unit 23 to thecleaner body 10 and the suction port body 40. Theoperation button 23a is connected to a switch for switching the power on and off, and theoperation button 23b is connected to a switch for switching the strength of the attractive force. Further, details about theconnection hose 20 will be described later.

Theextension pipe 30 includes: afirst tube part 31 having abase end part 31a detachably connected to ahandle tip part 22a of ahandle part 22 of aconnection hose 20; asecond pipe portion 32 slidably inserted into thefront end portion 31b of thefirst pipe portion 31; an electric wiring portion, not shown, is provided along the first andsecond tube portions 31 and 32.

The suction port body 40 includes a suction portmain body 41, aconnection pipe 42, and an electric wiring portion (not shown), the suction portmain body 41 incorporating a motor and a rotating brush (hereinafter referred to as a "power brush") rotated by the motor, and theconnection pipe 42 being connected to the suction portmain body 41 through a joint portion.

When the electric vacuum cleaner 1 is used for cleaning, the plug of the power cord is plugged into the commercial power, and the electric blower is driven by pressing theoperation button 23 to turn on the power, and at the same time, the power brush is rotated to sweep and suck the dust on the surface to be cleaned into the suction inlet body 40, and the dust is collected into thedust cup unit 12 through theextension pipe 30 and theconnection hose 20.

(constitution of connecting hose)

Fig. 2 is a left side view showing a handle portion of the connection hose according to the first embodiment, and fig. 3 is a left side sectional view of the connection hose of fig. 2. Fig. 4 shows a state in which the handle body portion of the handle portion of the first embodiment is removed, (a) is a perspective view, and (B) is a plan view. Fig. 5 shows a lower case of the handle body portion of the handle portion according to the first embodiment, where (a) is a perspective view seen from below and (B) is a bottom view. Fig. 6 shows a lower case of the handle body portion of the handle portion according to the first embodiment, where (a) is a perspective view seen from above and (B) is a plan view. Fig. 7 is a lower case with a second electrode showing the handle body portion of the handle portion of the first embodiment, and (a) is a perspective view seen from below and (B) is a bottom view. Fig. 8 is a sectional view showing a state in which the second electrode of the first embodiment is attached to the second electrode attachment portion by thermal welding.

(Flexible hose part)

As shown in fig. 1 to 3,flexible hose portion 21 ofconnection hose 20 includes: a hosemain body 21a having a plurality of (4 in this case)electric wires 24a constituting an electric wiring part spirally wound on an outer surface(ii) aA connecting member 21b provided at the hosebase end portion 21a of thehose body 21a₁(ii) a Acylindrical member 21c having ahose tip portion 21a inserted into thehose body 21a₂A base end portion of (a); a cylindrical firstelectrode mounting portion 21d mounted on an outer peripheral surface of an externally exposed distal end portion of thecylindrical member 21 c; a plurality of (in this case, 3) annularfirst electrodes 24b constituting an electrical wiring portion attached to the firstelectrode attachment portion 21 d. Further, the outer surface of the hosemain body 21a is covered with an insulating film that covers the plurality ofelectric wires 24 a.

A plurality of (4 in this case) recessed circumferential grooves are provided at equal intervals in the axial direction on the outer circumferential surface of the firstelectrode mounting portion 21 d. Then, thefirst electrode 24b is formed by winding and fixing a strip-shaped metal plate in a plurality of (in this case, 3) circumferential grooves. Further, arecess 21c is provided in a part of the outer peripheral surface joined to the firstelectrode mounting portion 21d of thecylindrical member 21c₁In therecess 21c₁Thefirst electrodes 24b and theelectrodes 24a are electrically connected to each other by a lead wire not shown.

(handle part)

Thehandle portion 22 has: a resin connectingpipe part 22A for supplying thehose tip part 21a of theflexible hose part 21₂The rotatable embedding; a handlemain body portion 22B made of resin, having anoperation portion 23, and coupled to theconnection tube portion 22A; a secondelectrode mounting portion 22C provided on the handlemain body portion 22B so as to be exposed to the inner circumferential surface side of theconnecting tube portion 22A; a plurality of (3 in this case) second electrodes 24C constituting an electrical wiring portion fixed to the secondelectrode mounting portion 22C.

(connecting pipe portion)

As shown in fig. 1, 3, 4(a) and 4(B), the connectingpipe portion 22A includes: a base end part 22Aa having a base end opening part 22Aa₁The base end opening part 22Aa₁Hose tip portion 21a offlexible hose portion 21₂Inserting; a front end portion 22Ab having a front end opening portion 22Ab₁The front end opening 22Ab₁Aproximal end 31a into which theextension pipe 30 is inserted; an intermediate part 22Ac positioned between the base end part 22Aa and the tip end part 22Ab is between.

The proximal end portion 22Aa of the connectingtube portion 22A is inserted into the distal end portion of thecylindrical member 21c of theflexible tube portion 21 across the intermediate portion 22Ac, and the distal end portion of thecylindrical member 21c is sealingly attached in contact with the curved boundary portion between the intermediate portion 22Ac and the distal end portion 22Ab of the connectingtube portion 22A. Then, the distal end portion of thecylindrical member 21c is separated from the connectingtube portion 22A by theseparation preventing piece 22D fastened to the connectingtube portion 22A, but relative rotation between theflexible hose portion 21 and thehandle portion 22 is allowed.

A hole 22Ac is formed in the surface of the intermediate portion 22Ac of the connectingtube portion 22A on the side of connection with the handlemain body portion 22B₁Said hole portion 22Ac₁The second electrode 24C attached to the secondelectrode attachment portion 22C is exposed to thefirst electrode 24b attached to the first electrode attachment portion 21C. The front end 22Ab of the connectingpipe portion 22A has a hole 22Ab₁₁The hole part 22Ab₁₁The locking claw 22Ea of the lockingmember 22E is projected toward thefront end portion 22 Ab. The locking claw 22Ea of the lockingmember 22E is inserted into the front end opening 22Ab of theconnection tube 22A at thebase end 31a of theextension tube 30₁In the inner state, thebase end portion 31a can be engaged with and disengaged from an unillustrated engaging recess provided on the outer peripheral surface thereof.

Further, a rib having a pair of holes 22Ab is provided on the front end portion 22Ab of the connectingpipe portion 22A₁₂. The pair of holes 22Ab₁₂When theproximal end 31a of theextension pipe 30 is inserted into the distal end opening 22Ab of the connectingpipe portion 22A₁In the inner stage, a pair of male connection terminals (pin terminals), not shown, provided on thebase end portion 31a is passed through and electrically contacted with a pair of female connection terminals, which will be described later. The pair of male connection terminals of theextension tube 30 are components of the electric wiring portion of theextension tube 30, and the pair of female connection terminals of theconnection tube portion 22A are components of the electric wiring portion of theconnection hose 20.

(handle body)

As shown in fig. 3, thehandle body 22B includes a lower case 22Ba covering the upper surface of theconnection tube part 22A on the side of connection with thehandle body 22B; and an upper case 22Ba covering an upper surface of thelower case 22 Ba.

As shown in fig. 3 and fig. 5 (a) to (B) and fig. 6 (a) to (B), the lower case 22Ba has a base end 22Aa, an intermediate portion 22Ac, and a rear end 22Ba covering the tip end 22Ab of the connectingtube portion 22A₁Intermediate section 22Ba₂And a front end portion 22Ba₃At the same time, a rear end 22Ba is provided₁Across the intermediate portion 22Ba₂And a bridge part 22Ba to be held by a hand of a user₄。

In the lower case 22Ba, the secondelectrode mounting portion 22C is provided on the lower surface of the connectingtube portion 22A connected to theintermediate portion 22 Ac. The secondelectrode mounting portion 22C is formed integrally with the lower case 22Ba, and has four rectangular mounting recesses 22Ca having an open lower side partitioned by ribs for mounting a plurality of (3 in this case) second electrodes 24C constituting the electric wiring portion at equal distances in the front-rear direction. Then, the pair of positioning protrusions 22Ca₁Are integrally formed with the respective mounting recesses 22 Ca.

As shown in fig. 7 (a) to (B) and fig. 8, thesecond electrode 24c includes: fixingplate portion 24c₁And has a pair of positioning protrusions 22Ca for the pair of positioning protrusions₁A pair ofhole parts 24c passing through₁₁(ii) a A pair of protrudingpieces 24c₂From the fixingplate portion 24c₁The left and right end portions of the upper and lower plates are bent downward; slidingcontact projection 24c₃Which is provided toward the pair of protrudingpiece portions 24c₂On the lower surface of the leading end portion curved in the direction of separation from each other.

In the case of the first embodiment, the pair of positioning protrusions 22Ca of the secondelectrode mounting portion 22C are formed at one side₁Through a pair ofhole portions 24c₁₁While fixing theplate portion 24c₁The fixingplate portion 24c is closely contacted with the mounting recess 22Ca in this state₁The second electrode 24C is welded to the mounting recess 22Ca and mounted on the secondelectrode mounting portion 22C. In FIG. 8,reference numeral 24w denotes a fixingplate portion 24c formed on the fixingplate portion 24c₁And a welded portion between the mountingrecess 22 Ca. In addition, the fixingplate portion 24c₁The welding in the process of welding to the mounting recess 22Ca can be performed by thermal welding, ultrasonic welding, or the like. The convex part Ca may be₁Heating and melting, and attaching fixingplate portion 24c to lower case 22Ba₁。

As shown in fig. 3, fig. 5 (a) to (B), and fig. 7 (a) to (B), the lower case 22Ba may have a distal end portion 22Ba₃Is provided with a hole portion 22Ba₃₁Said hole portion 22Ba₃₁The push button portion 22Eb of the lockingmember 22E is exposed to the outside. When the engagingmember 22E is assembled by a screw between the connectingtube portion 22A and the lower case 22Ba, acoil spring 22F is attached between the connectingtube portion 22A and the push button portion 22Eb of the engagingmember 22E, and thecoil spring 22F elastically urges the push button portion 22Eb to the outside.

Further, at a front end portion 22Ba of the lower case 22Ba₃A pair of left and right terminal mounting parts 22Ba are integrally formed on the lower surface of the base plate₃₂Said terminal mounting portion 22Ba₃₂Thefemale connection terminal 24d is attached to the distal end opening 22Ab of thefemale connection terminal 24d and theconnection tube part 22A₁The pair of male connection terminals of theinner extension pipe 30 are electrically connected. Thefemale connection terminal 24d is formed in a clip shape for sandwiching the male connection terminal (pin terminal) of theextension pipe 30, and is accommodated in the terminal mounting portion 22Ba formed of a rib₃₂And is welded and mounted by heat welding, ultrasonic welding, or the like. Thefemale connection terminal 24d of thehandle 22 and the male connection terminal of theextension pipe 30 may be provided in a replaceable manner.

As shown in fig. 3, the upper case 22Bb is assembled to the lower case 22Ba by screws from the rear end portion 22Ba of the lower case 22Ba₁Across to the front end 22Ba₃And covers the front end portion 22Ba₃At the same time, the grip portion of thehandle body 22B is constituted. The upper case 22Bb is formed with a hole 22Bb into which abutton holder 23c of anoperation unit 23 described later is fitted₁。

Theoperation unit 23 includes: the twooperation buttons 23a, 23 b; thebutton holder 23c holding twooperation buttons 23a, 23 b; apower circuit substrate 23d supported by the ribs of thelower case 22 Ba; and 2switch units 23e and 23f provided on thecircuit board 23 d. Thebutton holder 23c is configured to have a slit formed in the bottom thereof and to have a function as a leaf spring, so that when theoperation buttons 23a and 23b are pressed, theoperation buttons 23a and 23b are pressed via therespective switch portions 23e and 23f of the bottom plate, and when released, theoperation buttons 23a and 23b are returned by the leaf spring.

The electric wiring portion includes theelectric wire 24a, the first andsecond electrodes 24b and 24c, and thefemale connection terminal 24d, and further includes a first lead wire, not shown, connected to thesecond electrode 24c and thecircuit board 23d of theoperation portion 23, and a second lead wire, not shown, connected to thefemale connection terminal 24d and thecircuit board 23.

The first lead wire includes, for example, two lead wires electrically connecting the first twosecond electrodes 24c of the plurality ofsecond electrodes 24c to thecircuit board 23d of theoperation unit 23. The second lead wire includes, for example, a lead wire for electrically connecting onefemale connection terminal 24d to thesecond electrode 24c from the front, and a lead wire for electrically connecting the otherfemale connection terminal 24d to thesecond electrode 24 c.

The assembly of thehandle portion 11 is performed by: acircuit board 23d assembled on the lower case 22Ba and a fixingplate portion 24c of the twosecond electrodes 24c₁A first lead wire is soldered to the pair offemale connection terminals 24d and the fixingplate portions 24c of the twosecond electrodes 24c₁The second lead is welded to the upper surface of theflexible tube 21, the lower case 22Ba is assembled to the connectingtube 22A of thecylindrical member 21c by screws, and the upper case 22Bb, in which the button holder 22Bb having theoperation buttons 23a and 23b is assembled, is assembled to the lower case 22Ba by screws₁. Thereby, the pair of slidingcontact protrusions 24c of eachsecond electrode 24c₃Physically contacting thefirst electrodes 24b on theflexible tube 21 side.

According to the configuration and assembly of thehandle 11, the secondelectrode mounting portion 22C is provided in the lower case 22Ba of thehandle body portion 22B, and the second electrode 24C sliding in the circumferential direction on the first electrode 24B on theflexible tube portion 21 side is attached to the secondelectrode mounting portion 22C, so that a contact cover and a screw for attaching the contact cover to the handle portion, which are conventionally required, are omitted. As a result, the workability of assembling theconnection hose 20 is improved, and thehandle 11 gripped by the user is reduced in weight, thereby improving the workability.

(second embodiment)

Fig. 9 is a sectional view showing a state in which the second electrode is mounted on the second electrode mounting portion by insert molding in the second embodiment. In the first embodiment, the case where the second electrode 24C is mounted to the secondelectrode mounting part 22C by thermal welding is exemplified (fig. 8), but the mounting of the second electrode 24C to the secondelectrode mounting part 22C is not limited to thermal welding.

In the second embodiment, as shown in fig. 9, the second electrode 124C is mounted on the secondelectrode mounting portion 122C by insert molding. In this case, the fixing plate portion 124C is embedded in the secondelectrode mounting portion 122C of the lower case 122Ba of the handle body portion₁And a pair of protrudingpieces 124c₂But fixingplate portion 124c₁A part of the lead is exposed to the outside in advance for bonding the lead. In the second embodiment, the other configurations are the same as those of the first embodiment. In fig. 9, the fixingplate portion 124c is shown₁The inner surface of (b) is exposed to the outside, but the outer surface may be exposed.

(third embodiment)

In the first embodiment, the secondelectrode mounting portion 22C is integrally formed with the lower case 22Ba of thehandle body portion 22B, but the secondelectrode mounting portion 22C may be integrally formed with the connectingtube portion 22A (not shown).

In this case, a plurality of pairs of slits are formed in advance at the position where the secondelectrode mounting portion 22C is provided in the connectingtube portion 22A, and after the cylindrical member 21C of theflexible tube portion 21 is inserted into the connectingtube portion 22A, the pair of projecting pieces 24C of the second electrode 24C is inserted from the outside₂(refer to fig. 8) are inserted into the respective slits of the secondelectrode mounting portion 22C. Then, the fixingplate portion 24c of eachsecond electrode 24c is fixed₁After being soldered to the outer surface of the secondelectrode mounting portion 22C, thecircuit board 23d and the pair offemale connection terminals 24d are electrically connected (soldered) to the fixing plate portions 24C of the second electrodes 24C via wires₁。

In the third embodiment, since the second electrode soldering and the lead wiring work are added in the assembly process, the assembly work efficiency is lower than that of the first embodiment, but it is expected that the weight can be reduced by reducing the number of components.

(fourth embodiment)

In the first embodiment, the connection hose electrically connectable to the suction port body having the power brush built therein is exemplified, but the suction port body to which the connection hose of the present invention is applied is not limited thereto. Examples of other suction port bodies to which the connection hose of the present invention can be applied include a suction port body incorporating a driving wheel (driving power wheel) driven by a motor for assisting the travel of the suction port body, a suction port body having an LED lamp provided at a distal end portion thereof and capable of irradiating light to the front, and a suction port body combining two or more of a power brush, a power wheel, an LED, and the like.

(other embodiments)

1. In the first to third embodiments, the case where the second electrode is mounted by welding or insert molding to the second electrode mounting portion is exemplified, but the present invention is not limited to this, and mounting may be performed using a mounting member such as a mounting plate or a small screw. Further, welding or insert molding without using a mounting member is preferable in terms of workability in assembly and weight reduction.

2. In the connection hose of the first embodiment, the case where the electric wiring portion has the female-type or male-type connection terminal electrically connected to the male-type or female-type connection terminal provided on the extension pipe is exemplified, but the present invention is not limited thereto, and the female-type or male-type connection terminal may be omitted from the electric wiring portion. In this case, the suction port body that can be applied to the connection hose of the present invention can be applied to a suction port body other than the suction port body that requires electric power such as a power brush, a power wheel, and an LED lamp, for example, a suction port body having a rotary brush (turbine brush) that rotates by an air flow at the time of suction, or a suction port body that does not have a rotary brush.

(conclusion)

The present invention provides a connection hose for an electric vacuum cleaner, comprising: a flexible hose section having a hose base end connected to a cleaner body incorporating an electric blower; a handle portion attached to a hose tip portion of the flexible hose portion; an operation portion having an operation button provided on the handle portion; an electric wiring unit for transmitting a command signal from the operation button of the operation unit to the cleaner main body,

the flexible hose portion has a first electrode mounting portion provided on an outer peripheral surface of a distal end portion of the hose,

the handle portion has: a connection tube part which is rotatably fitted into the distal end part of the flexible tube part; a handle main body portion having the operation portion and coupled to the connection tube portion; a second electrode mounting portion provided on the handle main body portion,

the electric wiring part comprises: an annular first electrode attached to the first electrode attachment portion of the flexible tube; and a second electrode attached to the second electrode attachment portion slidably attached to the handle portion in a circumferential direction of the first electrode.

The connection hose of the electric vacuum cleaner of the present invention may have the following configuration, or may be appropriately combined with these configurations.

(1) The handle main body portion has the second electrode mounting portion integrally formed on an inner surface side to be coupled to the connecting tube portion,

the connecting tube portion may have a hole portion exposing the second electrode mounted on the second electrode mounting portion to the first electrode side mounted on the first electrode mounting portion.

According to this configuration, the connection tube portion of the handle portion is attached to the distal end portion of the flexible tube portion to which the first electrode is attached, and the handle body portion can be attached to the connection tube portion after the second electrode is attached to the second electrode upper attachment portion of the handle body portion of the handle portion. Thus, the second electrode portion does not need to be locked to the distal end portion of the flexible tube portion, and the connection tube can be easily assembled in a state of contacting the first electrode portion. That is, when the distal end portion of the tube to which the first electrode is attached is inserted into the connecting tube portion with the second electrode disposed on the inner surface side of the connecting tube portion, the distal end portion of the tube easily engages with the second electrode, and this engagement can be easily avoided according to the above configuration (1).

(2) The second electrode may be mounted on the second electrode mounting portion by welding or insert molding.

According to this configuration, since the second electrode does not need a mounting member for mounting the second electrode on the second electrode mounting portion, the workability of assembly and the weight reduction are further improved.

(3) The handle part has a handle front end part which can be connected through an extension pipe, the electric wiring part has a concave or convex connecting terminal which can be electrically connected with a convex or concave connecting terminal arranged on the extension pipe, the handle main body part in the handle front end part has a terminal installation part for installing the concave or convex connecting terminal of the electric wiring part, and the concave or convex connecting terminal of the electric wiring part can also be arranged on the terminal installation part.

According to this configuration, the suction port body of the rotary brush (power brush) having the drive motor built therein can be electrically connected to the connection hose via the extension pipe, and dust on the surface to be cleaned can be swept in and cleaned by the power brush. Further, a suction port body having a drive wheel (power wheel) with a drive motor, an LED, and the like built therein can also be used by being electrically connected to a connection hose via an extension pipe.

Further, since there is no need to mount the female or male connecting terminals of the electric wiring portion on the mounting member of the terminal mounting portion by welding or insert molding, the workability of assembly and the weight reduction are further improved.

Furthermore, the disclosed embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is indicated not by the above description but by the scope of the claims, and is intended to include all modifications within the scope and meaning equivalent to the claims.

Description of the reference numerals

1 electric vacuum cleaner

10 vacuum cleaner main body

20 connecting hose

21 flexible hose

21a₁Hose base end

21a₂Front end of hose

21d first electrode mounting part

22 handle part

22A connecting pipe part

22Ac₁Hole part

22a handle front end

22B handle body

22Ba₃₂Terminal mounting part

22C second electrode mounting part

23 operating part

23a, 23b operation buttons

24b first electrode

24c second electrode

24d female connection terminal

24w weld

40 suction inlet body

Claims (5)

1. A connection hose of an electric vacuum cleaner is characterized by comprising:

a flexible hose section having a hose base end connected to a cleaner body having an electric blower therein;

a handle portion attached to a hose tip portion of the flexible hose portion;

an operation portion having an operation button provided on the handle portion;

an electric wiring unit for transmitting a command signal from the operation button of the operation unit to the cleaner main body,

the flexible hose portion has a first electrode mounting portion provided on an outer peripheral surface of a distal end portion of the hose,

the handle portion has: a connection tube part which is rotatably fitted into the distal end part of the flexible tube part; a handle main body portion having the operation portion and coupled to the connection tube portion; a second electrode mounting portion provided on the handle main body portion,

the electric wiring part comprises: an annular first electrode attached to the first electrode attachment portion of the flexible tube; and a second electrode slidably attached to the second electrode attachment portion of the handle portion in a circumferential direction of the first electrode.

2. The connection hose according to claim 1, wherein the handle main body portion has the second electrode mounting portion integrally formed on an inner surface side coupled to the connection tube portion, and the connection tube portion has a hole portion exposing the second electrode mounted on the second electrode mounting portion to the first electrode mounted on the first electrode mounting portion.

3. The connection hose according to claim 1 or 2, wherein the 2 nd electrode is attached to the second electrode attachment portion by welding or insert molding.

4. A connection hose according to any one of claims 1 to 3, wherein the handle portion has a handle tip connectable via an extension pipe, the electric wiring portion has a female or male connection terminal electrically connectable to a male or female connection terminal provided on the extension pipe, the handle body portion in the handle tip has a terminal attachment portion to which the female or male connection terminal of the electric wiring portion is attached, and the female or male connection terminal of the electric wiring portion is attached to the terminal attachment portion.

5. An electric vacuum cleaner comprising a vacuum cleaner main body having an electric blower therein and the connection hose according to any one of claims 1 to 4 connected to the vacuum cleaner main body.

Images