JP3149160B2 - Suction body of vacuum cleaner and vacuum cleaner having the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner and an electric vacuum cleaner provided with a suction body in which a user can easily operate the angle of the suction body by operating a handle at hand.
The present invention relates to a mouthpiece of a remover .

[0002]

2. Description of the Related Art A suction body used in a conventional vacuum cleaner is connected to a hand handle via an extension tube, and the hand handle is rotated about a longitudinal direction of the extension tube as a rotation axis, thereby obtaining a suction body. Is mounted to be rotatable to some extent by the joint structure provided in the above.

[0003] The structure of the mouthpiece body includes a first joint attached to be able to swing up and down about both sides in the longitudinal direction of the suction body main body as a rotation axis, and a bent tubular form, one end of which is connected to the first joint. And a second joint which is attached so as to be rotatable in the axial direction and the other end is fixedly attached to the extension pipe. According to this mouthpiece, by rotating the hand handle, the mouthpiece can be rotated by the angle at which the second joint is bent, generally about 45 degrees.

[0004] For example, these structures are disclosed in Japanese Patent Laid-Open No. 5-245073.
No. 6,086,045.

[0005]

The mouthpiece of the conventional vacuum cleaner is formed on the basis of a horizontally long suction hole for cleaning by moving the mouthpiece in a front-rear direction through a handle at hand, and forming a floor surface. We try to clean efficiently. By providing the two joints described above in order to improve the cleanability of the bottom of the table and the gap, the up-down movement of the hand handle and the suction body itself can be performed while keeping the suction body in close contact with the floor by operating the hand handle. Allows rotation.

[0006] However, although the conventional mouthpiece can make the structure of the mouthpiece itself robust, there is a problem in operability with a handle at hand because there is a restriction in the operating range of the mouthpiece itself.

[0007] For example, when cleaning the wall, it is efficient to move the suction body along the wall surface with the longitudinal direction of the suction body parallel to the wall surface. However, in the structure of the conventional mouthpiece, since the rotation angle of the joint can be rotated only about 45 degrees even if the hand handle is rotated 90 degrees, the work must be performed in an unreasonable posture or performed with both hands. did not become.
Further, when cleaning a low gap such as under a softer, the bent joint is stuck and the cleaning efficiency as expected cannot be achieved.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a mouthpiece for a vacuum cleaner capable of efficiently rotating the mouthpiece by rotating the hand handle, and a vacuum cleaner provided with the mouthpiece.

[0009]

In order to achieve the above-mentioned object, in one representative invention according to the present invention, a suction main body having an opening at a bottom surface and extending in a longitudinal direction, and another end connected to the suction main body at one end side. In the suction body of the vacuum cleaner having a lower arm part and a free connection part consisting of an upper arm part connected to a connection pipe connected to the handle handle at the end side, a wheel in contact with a floor surface behind the suction body. One end of the lower arm is rotatably supported around the rotation axis with respect to the suction main body at the center of the suction main body which is attached and is located on the front side of the wheel. One end of the upper arm connected to an end is rotatably supported around another rotation axis orthogonal to the one rotation axis of the lower arm ,
The one rotation axis or the other rotation axis is the lower arm
Part or the upper arm in the height direction with respect to the suction body
Rotatably journaled in the direction of rotation and each rotational range of the lower arm portion and the upper arm portion and positioned substantially perpendicular to the upper arms floor in a state in which the upper arm can be raised and lowered in the height direction The configuration is such that the position along the left-right longitudinal direction of the mouthpiece main body can be taken from this state. In another representative invention according to the present application, in a vacuum cleaner, a cleaner body having an electric blower therein, a suction hose connected to the cleaner body, and a hand connected to the suction hose. A handle, a connection pipe connected to the hand handle, an opening body having an opening on the bottom surface, extending in the longitudinal direction, and a suction body having a wheel in contact with a floor surface at the rear of the center in the longitudinal direction; and A lower arm portion located at the center of the mouthpiece main body, one end of which is rotatably supported around the rotation axis with respect to the mouthpiece main body, and connected to the other end of the lower arm portion; a of the one of the upper arm portion rotatably connected to the connecting pipe while being axially supported by the other rotation axis orthogonal to the rotation axis, said one times
The pivot axis or the other rotational axis is the lower arm or the front
The upper arm can be rotated in the height direction with respect to the mouthpiece body.
Axial support, the rotation range and the rotation direction of each of the lower arm and the upper arm are such that the upper arm can be raised and lowered in the height direction and the upper arm is substantially perpendicular to the floor surface and from this state, Determined to be able to take a position along the left-right longitudinal direction of the suction body, rotate the connection pipe around its axis and transmit the rotation to the suction body through the upper arm and the lower arm, The angle between the longitudinal direction of the mouthpiece main body and the axis of the connection pipe is changed according to the degree of rotation of the connection pipe.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

(First Embodiment) FIGS. 1 to 19 show an embodiment of a vacuum cleaner according to the present invention.

First, an outline of this embodiment will be described with reference to FIG. 1 showing an external perspective view of a vacuum cleaner.

In FIG. 1, a vacuum cleaner generally designated by the reference numeral 1 is a vacuum cleaner main body 1 having a dust collecting chamber and a blower (not shown) for sucking dust into the dust collecting chamber.
00 and a flexible suction hose 20 having one end attached to the vacuum cleaner body 100 and communicating with the blower.
0, a hand handle 300 attached to the other end of the suction hose 200 and communicating with the blower, a connection pipe 400 attached to the hand handle 300 and communicating with the suction hose 200, and an attachment to the connection pipe 400. And a mouthpiece 500 communicating with the connection pipe 400.

The main body 100 of the vacuum cleaner includes a dust collecting chamber having a disposable dust bag therein, and a pair of large wheels 101.
And one free wheel 102 can be moved via the suction hose 200. The vacuum cleaner main body 100 receives power from a household outlet via a power cord (not shown) to operate the blower. And operation control of this vacuum cleaner main body 100 is as follows.
The infrared light receiving unit 103 in the operation display unit provided on the upper surface of the vacuum cleaner main body 100 is operated by receiving an operation signal started from the handle 300 at hand.

As described above, since the electrical connection between the handle 300 and the main body 100 of the vacuum cleaner is a connection using infrared rays, the suction hose 200 is used to transfer dust to the main body 100 of the vacuum cleaner. And a function as a moving pulling means for moving the vacuum cleaner main body 100.

The handle 300 is attached to the suction hose 2.
00 and the connection pipe 400, a function of controlling and moving the vacuum cleaner main body 100, and a function of operating the movement of the mouthpiece 500. The hand handle 300 is fixedly connected to the suction hose 200 and is detachably attached to the connection pipe 400, thereby connecting the suction hose 200 and the connection pipe 400 to form a dust conveyance path. ing.

Further, the hand handle 300 has an angle of about 110 degrees with the central axis Q at the longitudinal direction of the connecting pipe 400, that is, at the upper end on the extension of the central axis Q of the connecting pipe 400. The handle portion 3 is located at a position where the longitudinal direction substantially coincides with the connection direction between the suction hose 200 and the connection pipe 400.
01 is provided. With this handle portion 301, the vacuum cleaner main body 100 can be moved via the suction hose 200, and further, the movement of the mouthpiece 500 can be operated. In particular, according to the handle portion 301, the twisting operation, that is, the rotation P1 about the central axis Q is performed.
Can be easily performed. At this time, the handle portion 301
Is provided in the upper part, so that the suction hose 20 provided in the lower part
0 does not disturb the twisting operation.

Further, an operation section 302 for operating the vacuum cleaner main body 100 is provided near the handle section 301. The operation unit 302 includes an infrared transmitting unit 303
An operation signal is transmitted from the infrared transmitting section 303 to the infrared receiving section 103 provided in the vacuum cleaner main body 100, and the power of the vacuum cleaner main body 100 is turned on and off.
OFF and various controls can be performed. Incidentally, since the hand wheel 300 and a power supply unit such as a battery (not shown), it is Ru Oh unnecessary for electrical wiring to the suction hose 200. In addition, since two infrared transmitters are provided, the operation signal can be reliably transmitted to the vacuum cleaner main body 100 using the reflection from the ceiling or the wall surface, so that erroneous operations can be reduced.

The connection pipe 400 is connected to the handle 3
00 and the mouthpiece 500, and furthermore, by fixing the hand handle 300 and the mouthpiece 500 at a predetermined position, the movement (movement or rotation) of the hand handle 300 is controlled by the movement (movement or rotation) of the mouthpiece 500. Rotation). In this embodiment, two pipes 401 and 402 having different sizes are combined and configured to be expandable and contractible so that they can be fixed at a predetermined position.
00 is detachably attached to the other end of the suction body 500.

The suction body 500 is provided with a suction body 1010 (see FIG. 2) for sucking in dust on the bottom surface.
000 and the suction main body 1000 are connected to the connection pipe 400, and the bottom surface of the suction main body 1000 is freely operated so as to always contact the floor surface in response to the movement of the hand handle 300 transmitted through the connection pipe 400. And a connecting portion 1500.

The suction main body 1000 has a suction opening 1010 (see FIG. 2) provided with a rotary cleaning body 1011 (see FIG. 2) for sucking dust on the floor surface on the bottom surface. The universal connection part 1500 is connected to the suction main body 1000 and the connection pipe 4.
And a flexible hinge 1502 provided to cover the connecting hose 1501 and rotatably connecting the suction port body 1000 and the connecting pipe 400.

The universal hinge 1502 is connected to the suction body 50.
It is connected rotatably in the height direction Y of the hand handle 300 and the left and right direction X around 0, and the hand handle 300
The rotation P1 of the 300 twisting operation is directly applied to the suction body 100.
A mechanism for transmitting the rotation to zero rotation P2 is provided. In this embodiment, a universal hinge 1502 is rotatably attached to the suction main body 1000, and a lower arm 1502a that enables rotation in the height direction Y, one end is attached to the connection pipe 400, and the other end is attached to the lower end. An upper arm 1502b attached to the arm 1502a so as to enable rotation in the left-right direction X.
It is composed of

In this embodiment, although the details will be described later, the elevation direction Y is set to be operable within a range of about 90 degrees from the floor surface and in the left-right direction X within a range of about 180 degrees.

The mouthpiece 500 is provided with a suction body 10.
Around the sliding member 1100 instead of the conventional bumper
Is provided, a wheel 1200 is provided on the bottom surface for improving the cleaning performance at the wall and smoothing the movement of the suction body 1000 in the longitudinal direction V. Further, the suction body 10
By providing the dust guide means 1300 (see FIG. 8) at the front part (between the tip part) of the suction port 1010 provided on the bottom surface of 00, it is possible to efficiently suck in dust that is difficult to remove.

As described above, the vacuum cleaner 1 according to the present embodiment
According to this, since the operation signal is transmitted via the infrared signal, there is no need to wire the suction hose 200, and thus the weight of the suction hose 200 can be reduced. For this reason, the burden on the handle 300 held by the user can be reduced, and the running of the vacuum cleaner main body 100 and the operation of the mouthpiece 500 can be improved. In particular, a significant feature of this embodiment is that the operation of the mouthpiece 500 via the hand handle 300, for example, the rotation P1 of the twisting operation of the hand handle can be directly used as the rotation P2 of the mouthpiece 500. That is, the operation performed by the user with the handle 300 can be smoothly performed as the movement of the mouthpiece 500.

More specifically, for example, the hand handle 300
Is twisted 90 degrees (rotation P1), so that the suction body 500
1 can be rotated 90 degrees as shown by the dotted line in FIG. 1 to move the front and rear along the wall surface in the longitudinal direction V of the suction main body 1000, thereby cleaning the floor surface near the wall. At this time, the suction member 500 can be smoothly moved by the sliding member 1100 and the wheels 1200, and it is possible to reduce the possibility of damaging the wall surface. Can inhale well.

Hereinafter, the mouthpiece 500 will be described in detail with reference to FIGS.

First, based on FIG. 2 showing a component configuration diagram of the mouthpiece 500, referring to FIG. 3 showing a cross-sectional view of the planar configuration of the mouthpiece 500 and FIG.
The schematic structure of the mouthpiece 500 will be described.

In the figure, as described above, the mouthpiece 50
Numeral 0 is composed of a mouthpiece main body 1000 and a universal connection part 1500.

The mouthpiece body 1000 includes a lower case 1001 that forms the skeleton of the mouthpiece body 1000, a front upper cover 1002 that covers the front of the mouthpiece body 1000, and a mouthpiece body 10.
00 and a rear upper cover 1003 that covers the rear of 00.

The lower case 1001 is provided with a partition wall 1004 which divides the suction main body 1000 back and forth a little rearward, the front part is a suction chamber 1005, and the center of the rear part is a mounting part 1006 of the free connection part 1500. The mounting part 100
6 are provided as ventilation passages 1007 for driving a turbine 1012 to be described later. A notch 1008 is formed at the center of the partition wall 1004, and a bellmouth body 1009 for guiding dust in the suction chamber 1005 to the connection hose 1501 of the free connection portion 1500 is attached to the notch 1008.

A rear upper cover 1003 covers the upper part of the mounting portion 1006 of the universal connecting portion 1500 and fixes the bell mouth body 1009 and the universal connecting portion 1500 to the lower case 1001. And so on.

The front upper cover 1002 is attached to the suction chamber 10.
05 and the upper part of the ventilation path 1007, and the lower case 10
01 constitutes a suction chamber 1005 and a ventilation path 1007. An open / close lever 1022 (see FIG. 4) provided on both sides at the rear by hooking ribs (not shown) provided on both sides of the front part of the front upper cover 1002 on the lower case 1001. 7) so as to be detachably attached.

The lower case 10 below the suction chamber 1005
A suction port 1010 is formed in 01, and a rotary cleaning body 1011 for scraping up dust and the like is disposed in a suction chamber 1005 above the suction port 1010. The rotary cleaning member 1011 is formed by arranging a flexible blade having a high dust scraping effect and a brush having a high wiping effect such as nylon in grooves provided in the outer peripheral axis direction of the rotary core. Is mounted with a turbine 1012.

The rotary cleaning body 1011 and the turbine 10
Reference numeral 12 denotes a rotating shaft 1 provided at both ends of the turbine 1012.
No. 013 is inserted into bearings 1014 formed at both ends in the suction chamber 1005 and pressed by bearings (not shown) provided inside the front upper cover 1002 to suck the rotary cleaning body 1011 and the turbine 1012. It is rotatably arranged in the room 1005.

Openings 1015 are formed on both sides of the partition wall 1004 behind the turbine 1012, and a front upper cover for covering the ventilation passage 1007.
A ventilation hole 1016 is formed at the rear of both sides of the ventilation passage 1002, and air taken in from the ventilation hole 1016 is supplied to the ventilation passage 1007.
Through the opening 1015 to the turbine 1012 so that the rotary cleaning body 1011 attached to the turbine 1012 rotates.

Here, the driving of the rotary cleaning body 1011 will be described in detail with reference to FIG.
2, a multi-blade nozzle composed of a number of nozzles (not shown) for blowing air toward the turbine 1012 is disposed so as to substantially cover the outer periphery of the turbine 1012. The multi-blade nozzle is arranged so as to be divided into upper and lower parts.
It is fixed to the back, and the lower multi-blade nozzle is
01 is fixed via a screw.

The air blown to the turbine 1012 is
The turbine 1012 is rotated, and gathers at the center while winding around the rotating cleaning body 1011 that rotates at a high speed as a swirling flow, together with the air flow including dust that has been wound up by the rotating cleaning body 1011 sucked from the suction port 1010, and It is guided to the main body 100 of the electric vacuum cleaner through the body 1008 and the free connection part 1500.

As described above, according to the present embodiment, the mouthpiece 5
In the case of No. 00, the turbine 1012 and the rotary cleaning body 1011 are rotated by the ventilation hole 1016, and furthermore, the synergistic effect of the swirling flow generated in the suction port 1010 allows the dust to be absorbed while the dust on the cleaning surface is being wound up, so that the dust collection performance is greatly improved. it can.

Referring back to FIG. 2, a viewing window 1017 is provided at the front center of the front upper cover 1002 located above the rotary cleaning body 1011. This viewing window 1017 is
A transparent resin material, for example, a scratch-resistant acrylic resin is used. A good example is the suction chamber 1 of the viewing window 1017.
005 Cote I ring in order to reduce scratched by dust released into the inner surface by rotating the cleaning member 1011, for example, or subjected to UV coating, as further will become convex lens for clarity an enlarged internal By forming, the dirt on the rotary cleaning body 1011 can be known from the outside. In addition, since the operation state of the rotary cleaning body 1011 can be visually observed through the viewing window 1017, for example, a hearing impaired person who is difficult to hear a driving sound or an abnormal sound can be operated by the operation state of the vacuum cleaner 1 or a foreign object during driving. Rotary cleaning body 101 accompanying
It is possible to know troubles such as the stop of 1. Therefore, according to this embodiment, it is possible to easily confirm the operation state without an electrical display requiring electric wiring.

On the other hand, the universal connecting portion 1500 is
02a, an upper arm 1502b, and a connecting hose 1501. A rotating shaft 1503 is formed on one side of one end of the cylindrical lower arm 1502a, and the rotating shaft 1503 is formed on a mounting portion 1018 formed on the mounting portion 1006 of the lower case 1001.
Are mounted so as to be rotatable in the vertical direction (vertical direction in the drawing) by being sandwiched between bearing portions 1019 formed on the rear upper cover 1003.

The other end of the lower arm 1502a is provided with a rotary shaft hole 1504 at the top and bottom at a position crossing the rotary shaft 1503 by 90 degrees. On the other hand, the cylindrical upper arm 1502
b has a rotating shaft hole 1505 attached to the rotating shaft hole 1504 at one end. The upper arm portion 1502b and the lower arm portion 1502a are rotatably mounted in the left-right direction (left-right direction in the drawing) by inserting the pin 1506 into the rotation shaft hole 1504 and the rotation shaft hole 1505.

A connecting portion 1507 is formed at the other end of the upper arm portion 1502b so as to be detachably connected to the connecting tube 402. The connection hose 1501 is a bell mouth body
The rear end portion 1009a of the upper arm portion 1009 and the connecting portion 1507 of the upper arm portion 1502b are connected to form a lower arm portion 1502a and an upper arm portion 1502a.
2b.

As described above, the universal connecting portion 1 according to the present embodiment.
According to 500, the connecting hose 1501 is disposed inside the lower arm 1502a and the upper arm 1502b,
In addition to reducing the play of 01, the distance can be minimized, and the connecting hose 1501 can be protected from the outside.

The periphery of the upper portion of the lower case 1001, in particular, the long side facing the attachment portion 1006 to which the flexible connecting portion 1500 which is the front portion of the mouthpiece 500 is attached, protrudes outward from the other peripheral side. By forming the thickened portion 1020, the overall steel properties are enhanced, and the thickened portion 1020 is provided with a sliding member 1100 in which hair is implanted with nylon or the like by insert molding.

As described above, the mouthpiece 500 according to this embodiment
Since the rotary cleaning body 1011 is rotated by using the turbine 1012 rotating by the suction airflow of the blower provided in the electric vacuum cleaner main body 100 as a drive source, the weight of the suction body 500 can be reduced. In addition, since the ventilation portion 1006 is disposed on both sides of the attachment portion 1006 and the attachment portion 1006 at the rear center of the suction chamber 1005, the overall height can be reduced to achieve a compact form. In addition, since the attachment of the flexible connecting portion 1500 requiring steel and sealing is solved by attaching the rear upper cover 1003, the number of parts can be reduced and the assembling property can be improved. Further, the parts other than the rear upper cover 1003 can be opened simply by passing them through the front upper cover 1002, and the rotating brush 1011 can be easily removed, so that disassembly and cleaning can be improved. In addition, assembling can be completed only by simply attaching the rotary cleaning body 1011 and attaching the front upper cover 1002, so that the handleability can be improved.

Next, the appearance of the mouthpiece 500 is shown in FIGS.
This will be described in detail with reference to FIG. FIG. 5 is an external perspective view, and FIG.
7 is an external side view, FIG. 7 is an external rear view, FIGS. 8 and 9 are bottom views, FIG. 10 is a cross-sectional view of a main part of the sliding member, FIG. 11 is another application explanatory view of the sliding member, and FIG. FIG.

First, in FIG. 5, the mouthpiece 5 of this embodiment is shown.
00 designates a thin-walled appearance and
0 has a front part extending on both sides, and a mounting part 1006 of the free connection part 1500 arranged at the center of the rear part has a substantially T-shaped planar shape projecting rearward. And, by making the entire upper surface into a shape having a round shape as a main body, the cleanability is improved, and by making each corner portion into a round shape, consideration is given not to scratch furniture or the like.

Further, as shown in FIGS. 6 and 4, the side surface of the tip end of the suction main body 1000 is formed in a substantially wedge shape having a convex arc-shaped upper surface, so that the rotation area of the rotary cleaning body 1011 is secured while suctioning. The chamber 1005 has a shape that allows the airflow to be easily introduced into the bellmouth body 1009, and has a compact form as a whole.

Returning to FIG. 5, in this embodiment, the thick portion 1020 is formed in a longitudinal direction including four corners protruding on both sides of the suction body 1000, that is, a portion where the suction body 500 easily hits furniture or the like. It is formed in a belt-like and convex shape continuously formed on both sides and a part of the front part and the back surface.
And the sliding member 1100 is continuously provided in the thick part 1020. As shown in FIG.
Sets the brush 1101 having a short bristle of nylon material on the brush base 1
And a groove 10 formed in the thick portion 1020.
By inserting the brush stand 1020 into the brush 21, the brush 11
01 is fixed to the thick portion 1020. Here, the brush stand 1102 can reduce the number of parts by attaching an integral unit to the groove 1021, but it may be divided and attached to facilitate the molding. Further, the brush stand 1102 may be integrally formed with the thick portion 1020 to improve the assemblability. However, even if the cost of the equipment is reduced by bonding or press-fitting using elasticity of a resin material or the like. Good.

Further, the purpose of adopting the sliding member 1100 is to make the front part of the suction body 500 extend in the longitudinal direction V along the wall surface or the like.
(See FIG. 1). Therefore, the sliding member 1100 only needs to improve the sliding. For example, as shown in FIG.
3 may be adopted. The better one is roller 11
By providing an elastic material such as rubber or velvet around the tire 03 or forming a tire, it is possible to improve the slip and obtain an effect as a bumper function. in this case,
The mounting position of the roller 1103 may be provided so as to protrude forward at least on both sides of the front part of the mouthpiece 500 as shown in FIG. A more favorable one can improve slipperiness by being attached to the corners on both sides of the front part of the mouthpiece 500. Further, as shown in FIG. 9A, by providing the mouthpiece 500 not only at the corners on both sides of the front part but also at the center of the front part, irregularities on the wall surface can be easily absorbed.
A more favorable one can be provided with four corners protruding on both sides of the suction main body 1000 and the center of the front part, thereby improving the mobility. The arrangement of the sliding member 1100 may be the same as that of the embodiment shown in FIG.

In addition, in the embodiment shown in FIG. 5, the brush 1101 is employed as the sliding member 1100. However, the manufacturing cost may be reduced by attaching a velvet or a fiber material by bonding. These sliding materials 1100 can also be expected to have an effect as a bumper function by adopting a thick material.

Further, in the embodiment shown in FIG. 5, the sliding member 1100 is attached to the pressurized portion 1020 of the strong lower case 1001.
Is provided to enhance the steel properties,
By replacing 0 with an elastic material such as rubber or soft resin of another part and providing the sliding member 1100 on the elastic material, it is possible to improve the slip while having a shock absorbing function of preventing damage to furniture and the like. it can. In this case, the airtightness of the suction chamber 1005 can be improved by providing the elastic material on the outer periphery of the position where the lower case 1001 and the front upper cover 1002 are in contact with each other.

Next, referring to FIG. 5, in this embodiment, the size of the suction body 500 is set to a depth D of 304 mm, the depth D of the suction main body, and a root portion protruding on both sides in a state in which the flexible connecting portion 1500 is extended. Are set to 152 mm, 97 mm, and 83 mm, respectively. In this embodiment, the length D4 of the connecting portion 1507 is used.
Is set to 50 mm, the depth when attached to the connection pipe 400 is set to 254 mm. Further, as shown in FIGS. 6 and 8, the height H of the suction body 1000 is 63.5 m.
m, the width W is 280 mm, and the width W1 of the suction port 1010 is 22.
It is set to 6 mm.

Next, referring to FIGS. 6 and 7, in the mouthpiece 500 according to this embodiment, the upper surface is formed into a flat shape having a rounded shape so that dirt on the upper surface can be easily wiped off, and the front portion constituting the upper surface is formed. The upper cover 1002 is easily removed, for example, and has a good cleaning property.

In order to realize this effect, the mouthpiece 500 according to the present embodiment covers the top surface of the mouthpiece 500 other than the attachment portion 1006 of the flexible connection portion 1500 with the front upper cover 1002, and A pair of opening / closing levers 10 that slide in the lateral direction of the front upper cover 1002 provided on the
22 and ventilation holes 1016 are provided on both sides of the rear wall of the front upper cover 1002, and recesses 1023 for removing the front upper cover 1002 are provided on both side surfaces of the front upper cover 1002.

The ventilation hole 1016 has a plurality of slits 1016a divided along the longitudinal direction of the mouthpiece 500.
The slit portion 1016a is formed in a concave shape so as to be one step lower from the periphery, and a punched opening is integrally formed with the front upper cover 1002 in the concave shape. According to the structure of the ventilation hole 1016, the punching-shaped opening which is weakened in strength is formed one step lower than the surroundings and is divided into a plurality of slits, so that it can be made strong against impact.

According to the present embodiment, the opening / closing lever 1022 and the ventilation hole 1016 are provided on the back surface that is hardly affected by an impact, and have a structure that is hardly damaged by external force even if it comes into contact with furniture or the like during cleaning. . In addition, the mouthpiece 5
00 (the front upper cover 1002) on the side face
, The index finger or the middle finger is inserted into the handle concave portion 1023, and the thumb is opened and closed by the opening / closing lever 102.
2 and slide the open / close lever 1022 outward to release the engagement, and pinch it with the thumb and the index finger (middle finger).
The front upper cover 1002 can be easily removed from the mouthpiece 500.

Further, the opening / closing lever 1 that easily accumulates dirt is provided.
022, the vent hole 1016, and the handle concave portion 1023 are provided on the vertical surface, so that dirt hardly accumulates. Moreover,
Since it is provided on the front upper cover 1002, the front upper cover 1002 can be removed and the front upper cover 1002 can be washed from the front and back, so that the cleaning performance can be improved. In addition, the front upper cover 1002 can be easily attached, and the upper surface of the attached suction body 500 has a continuous flat flat shape with the front upper cover 1002 and the rear upper cover 1003. Can be wiped off.

8 and 9, the lower case 1001
A plurality of wheels 1200 are arranged so as to move the entire suction body 500 in the front-rear direction and the left-right direction V, and to maintain a constant interval between the bottom surface of the suction body 500 and the cleaning surface. The wheel 1200 has a pair of front wheels 1201 arranged on both sides of the front part of the bottom surface of the suction body 500, a pair of rear wheels 1202 arranged behind the pair of front wheels 1201, and a pressure applied to the cleaning surface during use of the electric vacuum cleaner 1. A pair of rear wheels 1203 for receiving are provided.

Here, a front wheel 1201 and a rear wheel 1202
Are arranged at positions facing each other. That is, as described above, the pair of front wheels 1201 and the pair of rear wheels 1 are provided on the radially extending portion of the turbine 1012 of the lower case 1001.
202 is located at the bottom 101 of the turbine 1012
The gap between 0 and the cleaning floor is kept constant. Further, by providing a pair of rearmost wheels 1203 below the universal connection portion 1500 so as to sandwich the universal connection portion 1500, even if a force is received from the hand handle 300, the rearmost wheel 1203 receives the force and cleans. The clearance with the floor is kept constant. Moreover, the free connecting portion 15
00, so that the free connecting portion 1500 is provided.
Does not hinder the operation range in the height direction Y, in particular, the minimum angle θ1.

As described above, the mouthpiece 500 according to the present embodiment is characterized in that it is moved in the left-right direction V in addition to the movement in the front-back direction. This left-right direction V
In this embodiment, in order to achieve the movement of the sliding member 1210 around the wheel 1200 as shown in FIG.
Is provided. The wheel 1200 is provided with a rotating shaft 1211 like a normal wheel, and a concave portion 1212 to which the sliding member 1210 is attached is formed on a peripheral side surface serving as a contact surface with a floor surface. A C-cut surface 1213 for improving overcoming is formed.

The sliding member 1210 is similar to the sliding member 1100 provided around the mouthpiece 500, and the brush 1214 having a short bristle made of a nylon material is
The brush 1214 is fixed to the wheel 1200 by inserting a brush table 1215 into a concave portion 1212 formed in the wheel 1200. In this embodiment, the brush table 1
215 is divided into two parts in a ring shape,
Attach so as to sandwich 200. This mounting method is the same as that of the sliding member 1100. Then, the wheel 1200 is press-fitted into a bearing of a wheel storage portion formed at the predetermined position on the bottom surface of the mouthpiece 500 and attached.

In this embodiment, the wheels 1200 are used to move the vehicle in the left-right direction V in addition to the movement in the front-rear direction. However, the present invention is not limited to this. For example,
A universal wheel may be used, or the wheel 1 of the mouthpiece 500 may be used.
A protrusion may be formed at a predetermined position where 200 is arranged, and the sliding member 1210 may be provided on the protrusion. In this manner, five points (basic) are provided on the bottom surface of the mouthpiece 500 according to this embodiment so that the front wheel 1201 and the rear wheel 1202 are respectively disposed on the left and right, and the rearmost wheel 1203 is disposed on the rear center. Arrangement) with wheels. According to this wheel configuration, it is possible to obtain excellent traveling performance in the front-rear direction, and excellent traveling performance not only in the left-right direction X but also in oblique movement and rotation. In particular, since the rear wheel 1203 is located closer to the user than the rotating shaft 1503 of the universal connection portion 1500 during use, it is possible to reduce the movement in the front-rear direction, especially the lifting of the tip of the mouthpiece 500 when retracting.

Further, the rotating shaft 1 of the universal connecting portion 1500
Since the mouthpiece 503 is provided in the five-point wheel, even if the mouthpiece 500 is rotated through the hand handle 300,
The inclination of 0 (lift of the corner) can be reduced. Moreover, since each wheel 1200 is disposed at a corner of the mouthpiece 500, it is possible to reduce the possibility of catching during rotation.

Next, a dust guide means 1300 is provided at the front of the suction port 1010 provided at the bottom of the suction body 500, and a pressure control plate 1301 is provided at the rear of the suction port 1010. The guide means 1300 includes a flat portion 130 formed between the mouthpiece 1010 and the tip of the mouthpiece 500.
2 has a function of efficiently sucking dust that is difficult to suck.

For example, in the conventional mouthpiece, when the tip of the mouthpiece is brought into contact with the wall surface, dust existing on the floor below the flat portion 1302 can be sucked only by the force of the sucked air flow. Can not.

The guide means 1300 according to this embodiment
Is for efficiently sucking the dust which is difficult to suck. In this embodiment, in order to solve the above problem,
A brush row 1311 in which bundles 1310 of brushes made of long hair, such as nylon, are arranged so as to form a row in the front-rear direction,
A plurality of guides 1300 are arranged in the left and right direction on the guide 302. In this embodiment, as shown in FIG. 8, the brush rows 1311 are bilaterally symmetrical about the center, and the brush rows 1311 are arranged obliquely so as to converge on the suction port 1010 side. The brush bundle 1310 is directly connected to the flat portion 1.
The brush row may be embedded in the brush 302 and the brush row 1311 may be implanted in a brush table as a group, and the brush table may be embedded in the flat portion 1302 and attached.

According to the guide means 1300, the air flow passage 1312 is formed between the brush rows 1311.
It is possible to accelerate the flow of the air flow through the flow path 1312 to make it easier to suck in dust. In addition, by moving the suction body 500, the dust on the flat portion 1302 is swept up by the brush bundle 1310, so that the suction can be easily performed. That is, by moving the dust on the flat portion 1302 through the suction body 500, the dust is scraped up by the brush bundle 1310 and the suction
10 can be led.

It should be noted that the pressure control plate 1301 is
In step 312, the dust that has rushed out and jumps backward is received and sucked into the suction port 1010 again.

FIG. 9 shows another application of the embodiment described with reference to FIG.

The mouthpiece 500 according to this embodiment is provided with a large rear wheel 1203a at the lower part of the universal connection portion 1500 which receives the force of the handle 300 at its most, thereby enhancing the steel quality and the running property. Further, the guide means 130 of this embodiment
In the case of No. 0, a brush 1314 is implanted in the brush table 1313, and the brush table 1313 is embedded at intervals along the longitudinal direction of the flat portion 1302. According to this embodiment, the flow path 1
Since 315 is reduced, the flow velocity can be increased, and the brushes 1314 are densely provided, so that the effect of wiping the floor can be enhanced.

Next, based on FIGS.
500 will be described in detail. 13 is an external perspective view of the universal connection portion, FIG. 14 is a plan view of the universal connection portion, FIG. 15 is an assembly process diagram of the universal connection portion, and FIG. 16 is an explanatory view of an application example of another universal connection portion.

13 and 14, first, the mouthpiece 500 according to this embodiment has two arms (a lower arm 1502a).
A rotatable and the articulated hinge at the upper arm 1502b) two of the to Cartesian mutually rotating shaft is adopted with.

Specifically, the lower arm 15 formed in a cylindrical shape
02a are cutouts 15 in the upper and lower portions around the rotation shaft 1503.
10, 1511 are formed and cut out in an arc shape, so that the rotation of the lower arm 1502a about the rotation shaft 1503 is made smooth and the angle in the height direction Y is determined. That is, the lower notch 1510 of the lower arm 1502a
Together with a notch 1024 (see FIG. 2) formed behind the mounting portion shaft 1006 of the lower case 1001, together with the height direction Y
Is determined as the minimum angle θ1. In this embodiment, the angle is set to about 5 degrees so that the adapter or the like attached to the free connection portion 1500 or the connection pipe 400 does not contact the floor surface. The upper cutout 1511 is located on the rear upper cover 1.
Notch 1025 formed at the rear of 003 (see FIG. 2)
At the same time, the maximum angle θ2 of the height direction Y is determined. In this embodiment, by setting the angle to about 95 degrees, it is possible to vertically store the mouthpiece 500, the connection pipe 400, and the hand handle 300 in a connected state.

On the other hand, the lower arm 1502a and the upper arm 1502
b are cutouts 15 on both sides of the rotary shaft holes 1504 and 1505.
12, 1513, the angle θ in the left-right direction X
3 has been determined. In this embodiment, the angle θ3 is formed so as to have an operating range of 180 degrees in total by 90 degrees left and right.

According to this articulated structure, the rotation in the vertical direction Y and the horizontal direction X is enabled, and the rotation P1 of the twisting operation of the hand handle 300 is transmitted as the same rotation angle, and the rotation of the suction body 500 is performed. P2 can be obtained. The vertical direction Y, the horizontal direction X, and the rotations P1 and P2 can also be performed by rotating the lower arm 1502a and the suction body 1000 in the horizontal direction X and rotating the upper arm 1502b in the vertical direction Y. However, in order to improve the straightness of the suction body 500, it is preferable that the rotation of the lower arm 1502a and the suction main body 1000 be rotation in the vertical direction Y. In the case where the rotation of the lower arm 1502a and the mouthpiece body 1000 is the rotation in the left-right direction X, a locking means for fixing the rotation in the left-right direction X at a predetermined position is provided.

In this embodiment, the upper arm 1502b and the lower arm 1502a are rotatably connected by the pin 1506, but the present invention is not limited to this structure. For example,
As shown in FIG. 13B, the upper arm 1 of the above embodiment
A convex shaft 1504a is formed instead of the rotary hole 1504 of 502b, and a concave shaft 1505a for receiving the convex shaft 1504a is formed instead of the rotary hole 1505 of the lower arm 1502a.
The convex shaft 1504a and the concave receiving shaft 1505a are rotatably fitted. According to this structure, the fitting between the convex shaft 1504a and the concave receiving shaft 1505a can be strengthened by utilizing the elasticity of the resin material, and a large pressure, for example, a large torsion force is applied to the universal connection portion 1500. When it is applied, the flexible connecting portion 15
00 can be disengaged to avoid damage without damaging 00. Of course, by the elastic force,
It is easy to return to the original fitted state, and the assemblability is improved.

In FIG. 14, the distance L1 between the center of the rotary shaft 1503 and the centers of the rotary shaft holes 1504 and 1505 is shown.
Is determined in consideration of the minimum bending radius R of the connecting hose 1501. That is, the connecting hose 1501 is connected to the lower arm 150.
The distance L2 between the positions 1514 and 1515 which are fixed to the upper arm 2a and the upper arm 1502b and whose expansion and contraction is limited is determined to be twice the minimum bending radius R. Then, it is determined that 1/2 of the distance L2 is set as the distance L1. Therefore, if the connecting hose 1501 is thinner than the inner diameters of the lower arm 1502a and the upper arm 1502b, L1 can be shortened, and if the connecting hose 1501 is made thicker, L1 becomes longer.

In the present embodiment, the minimum bending radius R of the connecting hose 1501 is set to be smaller than that of the connecting hose 1501 for the reason described later.
1 is set in a slightly pulled state, but is not limited to this. The connection hose 1501 in a normal state may be employed.

In addition, in this embodiment, the connecting hose 15
01 is covered by the lower arm 1502a and the upper arm 1502b, and the connecting hose 1501 is worn by providing a reinforcing member at a portion where the connecting hose 1501, the lower arm 1502a, and the upper arm 1502b are in contact. It is possible to reduce troubles such as drilling holes and improve durability. The reinforcing material may be applied to the inside of the lower arm 1502a and the upper arm 1502b around the positions 1514 and 1515, or the entire connecting hose 1501 may be covered with a durable and stretchable reinforcing sheet. In particular, if a color is applied to the reinforcing sheet, dirt due to dust can be reduced, a wide variety of models can be developed, and the design can be improved.

Further, in this embodiment, there is provided a lock mechanism 1516 for temporarily locking the rotation in the left-right direction X at a position of 90 degrees. For example, in this embodiment, with the rotating shaft holes 1504 and 1505 fitted with the pins 1506, the sliding surfaces of the lower arm 1502a and the upper arm 1502b are
A convex portion 1517 and a concave portion 1518 are provided at which the lower arm portion 1502a and the upper arm portion 1502b are fitted at a linear position. The strength of the fitting between the convex portion 1517 and the concave portion 1518 is determined as appropriate in consideration of the elasticity of the resin material and the distance from the rotation axis and the size of the unevenness.

According to the lock mechanism 1516, when the lower arm 1502a and the upper arm 1502b are linear, the rotation in the left-right direction X is fixed.
The straightness of 0 is improved, and the movement in the front-rear direction becomes easy. On the other hand, when trying to rotate the mouthpiece 300 via the handle 300 at hand, the protrusion 1517 and the recess 1518 formed of a resin material are disengaged by elasticity, so that the lock mechanism 1516 can be disengaged with a slight force. it can. In this embodiment, one convex portion 1517 and one concave portion 1518 are provided in order to enhance the straightness of the mouthpiece 500. For example, the concave portion 1518 may be provided at a predetermined frequency (45 degrees, 90 degrees).
, Etc.).

Next, referring to FIG.
Will be described. First, the connecting hose 1501 of this embodiment includes a bell mouth body 1009 and an upper arm 1502b.
It is attached to be pulled. With this pulling force, the connecting hose 1501 is maintained in a straight state when it is straight, and acts strongly in the bending direction when a bending force is applied. For this reason, the lock mechanism 151
When the lock 6 is in the locked state, the locked state is further maintained to improve the straightness, and when the locked state is released, the mouthpiece 500 can be easily turned. In this embodiment, the suction body 5
As one means for improving the straightness of the 00, a connecting hose 1
Although the pulling force of 501 is used, for example, a pulling member such as a spring or rubber may be provided symmetrically on both sides to improve the straightness.

In this embodiment, since the connecting hose 1501 is disposed in the universal hinge 1502, the assembling is performed in a process as shown in FIG. In particular, this step is effective when the connecting hose 1501 is attached in a stretched state.

First, as shown in FIG. 10A, the connecting hose 1501 is passed through the lower arm 1502a, and
One end of 501 is a rear end 1009 of a bell mouth body 1009.
a, and attaches the bellmouth body 1009 to the partition wall 1
004 is attached to the notch 1008 provided at the center of the lower case 1 and the rotating shaft 1503 of the lower arm 1502a is attached to the lower case 1
001 attached to the bearing portion 1018 of the attachment portion 1006,
The rear upper case 1003 is attached, and the bell mouth body 1009 and the lower arm 1502a are fixed. At this time, the other end of the connecting hose 1501 has a convex rib 1520 that fits into a fitting hole 1519 provided in the upper arm 1502b to connect the connecting hose 1501 and the upper arm 1502b,
Packing that keeps air tight between 02b and connecting hose 1501
The connecting part 1521 provided with 1521b is attached.

Next, as shown in FIG.
02b and the lower arm 1502a, and
21 is inserted into the upper arm 1502b, and the fitting hole 151 is inserted.
9 and the convex rib 1520 are fitted to connect the connection hose 1501 to the lower arm 1502a.

Next, as shown in FIG.
02b, align the rotary shaft holes 1504 and 1505,
By inserting the pin 1506, the upper arm 1502b and the lower arm 1502a are connected to complete the assembly of the universal connection 1500.

When the convex shaft 1504a and the concave receiving shaft 1505a described with reference to FIG. 13B are employed, they are fitted by utilizing the elasticity of the resin material. This assembling process is an example, and may be assembled in another process.

Next, FIG. 16 shows another embodiment in which the assemblability and the disassembly of the flexible connecting portion 1500 are improved. In FIG.
(A) is a partial enlarged view and a partial cross-sectional view of the connecting portion 1521 attached to the other end of the connecting hose 1501, and (b) is an external view of the connecting hose 1501 with the other end removed.

In FIG. 16, a connecting portion 1521a having a packing 1521b similar to that of the above embodiment is attached to the other end of the connecting hose 1501. This connecting part 1521
a convex rib 15 that can be cut into a and pushed inward
20a, and the upper arm 1502b is provided with the convex rib 1520a.
And a release button 1519b having a fitting hole 1519a that can be cut out and extended outward. According to this structure, as in the embodiment shown in 15, the connecting portion 1521a is inserted into the upper arm portion 1502b,
By fitting the convex rib 1520a and the fitting hole 1519b,
The connection hose 1501 and the lower arm 1502a can be connected. On the other hand, if the release button 1519b is pushed in as shown by the arrow, the fitting is released and one end of the connection hose 1501 can be removed.

Therefore, when cleaning the mouthpiece 500,
The inside of the connection hose 1501 that is easily soiled can be easily cleaned. In addition, if the connection hose 1501 and the attachment portion 1009a of the bell mouth body 1009 are detachably attached to each other, for example, if the attachment hose 1001 is screwed into the attachment portion 1009a, the connection hose is disengaged. By rotating the 1501, the connecting hose 1501 can be easily removed. Therefore, the rear upper cover 1002 does not need to be removed. With such a structure, it is easy to replace the connection hose 1501 when the connection hose 1501 is damaged.
The cleaning performance of the mouthpiece 500 can be improved. In particular, when the mouthpiece 500 is washed as a whole, the connection hose 1501 can be easily washed and dried.

Next, an operation method of the electric vacuum cleaner 1 according to the present embodiment will be described with reference to FIGS.

In FIG. 17, first, in the vacuum cleaner 1 according to the present embodiment, the user holds the hand handle 30 in a standing posture.
0, the suction body through the connection pipe 400
The floor can be cleaned by operating the 500. At this time, a pair of large wheels 101 is attached to the vacuum cleaner main body 100 connected to the handle 300 via the suction hose 200.
And one free wheel 102, so that cleaning can be performed while moving. In general, the average height of a Japanese woman is 157 cm. However, if the user naturally holds the handle 300 and moves the suction body 500 back and forth through the connection pipe 400 to clean the body, The vertical distance between the handle 300 and the floor is 7
If it is 8 cm or less, cleaning can be performed without putting a burden on hands and arms. The angle is set to the most operable operation range of the user, which is 45 degrees in the vertical direction.
On the other hand, if it is higher than that, it will put a burden on your hands and arms.

Therefore, in this embodiment, the length of the extension tube 10 is set so that the angle of the extension tube 10 becomes 45 degrees. Since the handle portion 301 of the hand handle 300 is set to about 110 degrees, the handle portion 301
The user grasping the extension pipe can easily move forward and backward in the state where the angle of the extension tube 10 is 45 degrees. In addition, since the lower arm 1502a of the universal connection portion 1500 rotates in the height direction Y, the bottom surface of the mouthpiece 500 where the mouthpiece 1010 is provided, so that the mouthpiece 500 moves even if the mouthpiece 500 moves in the front-back direction. The bottom does not rise from the floor. At this time, the rotation in the left-right direction X is performed by rotating the upper arm 1502b in the left-right direction X because the rotation axis in the left-right direction X of the upper arm 1502b is tilted 45 degrees because the extension tube 10 is tilted at 45 degrees. In addition, even if the mouthpiece 500 is moved in the front-rear direction, the movement of the mouthpiece 500 in the left-right direction X can be reduced. Further, in this embodiment, the lock mechanism 15
16 and the connecting hose 1501 provided at the tension, the straightness of the mouthpiece 500 can be further improved. In addition, the wheel 1200 provided on the bottom surface of the mouthpiece 500 rotates as a normal wheel around the rotation shaft 1211 to improve the straightness. In particular, the rearmost wheel 1203 reduces the lifting of the distal end portion of the suction body 500 in the front-rear movement, so that good straightness can be obtained. In addition, in this embodiment, the brush 1214 of the guide unit 1300 and the double brush of the rotary cleaning body 1011 can double-screw the dust on the floor surface to increase the suction efficiency.

In this embodiment, the lower arm 1502
By performing rotation in the height direction Y at a, and performing rotation in the left-right direction X at the upper arm 1502b, the straightness of the extension tube 10 in the normal posture in the state of 45 degrees can be improved.
In the structure in which the lower arm 1502a rotates in the left-right direction X and the upper arm 1502b rotates in the height direction Y, the rotation of the mouthpiece 500 described later can be performed in the same manner as in the above-described embodiment. Since the problem remains in the straightness, it is necessary to provide the lock mechanism 1516 for preventing rotation in the left-right direction X.

Referring to FIG. 18, in this embodiment, the direction of the mouthpiece 400 can be linked to the rotation of the handle 300 by twisting the handle portion 301 of the handle 300. 18, (a) is a state in which the handle part 301 is straightened, (b) is a state in which the handle part 301 is twisted by 45 degrees, and (c) is a hand handle 300 in which the handle part is twisted by 90 degrees. FIG. In FIG. 18, three angles are described for convenience of description, but the angle of the twisting operation of the hand handle 300 and the angle of the suction body 500 are linked at any angle in the operation range.

First, in FIG. 9A, both the handle portion 301 and the mouthpiece 500 are in a state suitable for straight running with straight facing.

On the other hand, as shown in FIG. 13B, when the handle portion 301 is twisted by 45 degrees, the direction of the mouthpiece 500 can be inclined by 45 degrees by the action of the universal connection portion 1500. In this state, the wheel 1200 of the suction body 500 slides laterally, so that the front-back movement can be performed while the suction body 500 is tilted. For example, it is extremely effective when cleaning a narrow part with an obstacle in front. In addition, by changing the direction of the suction body 500, the
Since the direction of 00 is changed, it is easy to change the course of the suction body 500 as if turning the steering wheel of a car.

Further, as shown in FIG. 10C, when the handle portion 301 is twisted by 90 degrees, the direction of the mouthpiece 500 can be changed to 90 degrees by the action of the universal connection portion 1500. In this state, the wheel 1200 of the suction body 500
Can be moved in the front-rear direction (the left-right direction V) with the mouthpiece 500 lying right beside. This posture is extremely effective for cleaning the wall. This cleaning near the wall will be described with reference to FIG.

In FIG. 19, (a) shows the structure of the suction body 50.
Shows a state where the wall is cleaned with 0 lying right next to it,
(B) The drawing shows the suction body 5 with a margin of shoulder width along the wall.
00 shows a state where the wall is cleaned in a state close to the side. Further, FIG. 9C is a diagram showing that by setting an operation range wider than the 180-degree operation range of the present embodiment, narrow clearance cleaning becomes more optimal. For example, by setting such a wide operation range, it is possible to reduce the possibility that the connection hose 400 or the suction hose 200 facing sideways when the handle portion 301 is twisted comes into contact with a wall or the like.

In the state shown in FIG. 19, the suction body 500 right beside can be moved in the front-rear direction (the left-right direction V) with the tip of the suction body 500 being in contact with the wall surface. In this state, the sliding member 1100 provided around the suction body 500 can move the wall without damaging the wall surface, and furthermore, the guide means 1300 provided on the bottom surface portion allows the dust between the suction port 1010 and the wall surface to be removed. Can be efficiently sucked.

Next, referring to FIG. 20, the mouthpiece 500 according to this embodiment can reduce the overall height H while maintaining the turning performance of the mouthpiece 500, so that a lower portion of furniture such as a lower portion can be used. Excellent cleanability. In FIG.
(A) and (b) are side views and a plan view of a conventional example in use.
(C) and (d) are a side view and a plan view of the use state of this embodiment.

As is clear from the comparison between the diagrams (a) and (c), according to the present embodiment, the lower handle 300 can be inserted into a lower clearance, but in the conventional example, Since the bent joint is employed, if the handle 300 is lowered, the bottom surface of the mouthpiece 500 will float. In the conventional example, as shown in FIG. 2 (b), the joint H bent by the operation of twisting the hand handle 300 can be laid down to lower the total height H, but since the mouthpiece 500 faces obliquely, the depth of the clearance There remains a problem in the cleanability of garbage. On the other hand, in the present embodiment, as shown in FIG. 5D, the mouthpiece 500 can be directly opposed to the wall surface in the back of the gap without performing a twisting operation. In addition, the facing state can be maintained by the lock mechanism 1516.

(Second Embodiment) Next, FIGS.
, Another embodiment of the vacuum cleaner according to the present invention will be described. The second embodiment differs from the first embodiment in that the mouthpiece 500 of the first embodiment is changed to a mouthpiece 510 in which a connecting hose 1630 serving as a transport passage and a support member for the mouthpiece 510 are separated. The other vacuum cleaner main body 100 and the like employ the same one. Here, the mouthpiece 510 will be described, and description of other parts will be omitted. Further, similar structures, parts, arrows, and the like indicate the same reference numerals, and description thereof will be omitted.

First, the outline of the second embodiment will be described with reference to FIG. 21 showing an external perspective view. The mouthpiece 510 according to this embodiment has a mouthpiece 1010 for sucking dust.
A suction main body 1050 having a bottom surface (see FIG. 22), and the suction main body 1050 is connected to the connection pipe 400, and the suction main body 1050 is always moved in response to the movement of the hand handle 300 transmitted through the connection pipe 400. And a free connecting portion 1600 that operates so that the bottom surface of the device contacts the floor surface.

The suction main body 1050 has a suction surface 1010 (see FIG. 22) provided with a rotary cleaning body 1011 (see FIG. 22) for sucking dust on the floor surface on the bottom surface. The free connection part 1600 is attached to the connection part 1601 communicating with the connection pipe 400 and the longitudinal direction of the connection pipe 400, that is, the lower end on the extension of the central axis Q of the connection pipe 400. A universal hinge 1602 for rotatably connecting the connecting portion 1601;
0 and a flexible connection hose 1603 communicating the connection portion 1601.

[0108] The universal hinge 1602 is
It is connected rotatably in the height direction Y of the hand handle 300 and the left and right direction X around 0, and the hand handle 300
The rotation P1 of the 300 twisting operation is directly applied to the suction body 105.
A mechanism for transmitting the rotation to zero rotation P2 is provided. In this embodiment, the first Y-shaped body 16
04 and the second Y attached to the connection portion 1601
A font 1605, the first Y font 1604 and a second rotary shaft by Cartesian to Y font 1605, mounted rotatably around a point of intersection S1 that intersects both Y font 160
4, 1605 which are connected to each other.

In this embodiment, although details will be described later, the operation in the elevation direction Y can be performed within a range of about 90 degrees from the floor surface and in the left-right direction X is 180 degrees or more. The mouthpiece 510 is provided with a sliding member 1100 around the mouthpiece main body 1050, thereby improving the cleaning performance near the wall and at the bottom surface in the longitudinal direction V of the mouthpiece 1050.
Is provided with a universal wheel 1250 (see FIG. 24) for smoothing the movement of. Further, by providing a dust guide means 1300 (see FIG. 24) at the front portion (between the front end portion) of the suction port 1010 provided on the bottom surface of the suction main body 1050, it is possible to efficiently suck the dust near the wall which is difficult to remove. it can. The description of the sliding member 1100 is omitted because it is the same as that of the first embodiment.

As described above, the suction body 510 according to the present embodiment.
According to the connection hose 1603 having the same effect as the first embodiment, and having the function of transporting dust.
Hinge 16 for rotatably supporting mouthpiece 510
Since the structure is separated from the structure 02, the structure can be simplified and the manufacturing cost can be reduced.

Hereinafter, the mouthpiece 510 will be described in detail with reference to FIGS. FIG. 22 is a structural view of parts, FIG. 23 is a structural view of a universal hinge, FIG.
5 is a schematic sectional view, and FIG. 26 is an explanatory view of a use state.

First, the components of the mouthpiece 510 will be described with reference to FIGS. 22 and 25. FIG. In the figure, as described above,
The mouthpiece 510 is connected to the mouthpiece main body 1050 and the universal connection part 160.
0. The mouthpiece main body 1050 includes a lower case 1051 that forms a skeleton of the mouthpiece main body 1050, a front upper cover 1052 that covers the front of the mouthpiece main body 1050,
Rear upper cover 10 covering the rear of suction body 1050
53.

The rear upper cover 1053 is attached to the lower case 105.
1 are formed via screws and form ventilation passages 1007 (not shown) disposed rearward on both sides. Then, an attachment portion 1055 of the connection hose 1603 is arranged at the center of the upper front portion, and a first Y-shaped body 1604 of the free connection portion 1600 is provided behind the attachment portion 1055. Further, a bell mouth body 1009 communicating with the mounting portion 1055 of the connection hose 1603 is provided at the front center of the rear upper cover 1053, and an opening 1015 communicating with the ventilation passage 1007 is provided on both sides thereof.
Is provided.

The upper upper cover 1052 is connected to the lower case 1051.
To form a dust collecting chamber 1005. A suction port 1010 is formed on the bottom surface of the dust collecting chamber 1005, and a rotating brush 1011 having a dubbin 1012 on both sides is disposed in the dust collecting chamber 1005. Also in this embodiment, the turbine 1012 and the rotary cleaning body 1011 are rotated by the ventilation holes 1016 in the same manner as the first embodiment. it can.

The free connecting portion 1600 is composed of a connecting portion 1601, a free hinge 1602, and a connecting hose 1603. The connecting portion 1601 includes a connecting portion 1507 that is detachably attached to the connecting pipe 400 at one end, and the second Y-shaped body 1605 of the universal hinge 1602 is attached to the other end, and is connected to the second Y-shaped body 1605. The portion 1507 is located substantially on an extension of the central axis Q. Further, as shown in FIG. 25, the dust collection path 1607 formed in the connecting portion 1507 is gently bent and disposed in front of the second Y-shaped body 1605.
Connecting hose 1 communicating with said dust collecting path 1607 at the front of
An attachment portion 1608 of 603 is formed. The connection hose 1603 is detachably attached to the attachment portion 1608 and the attachment portion 1055 of the mouthpiece main body 1050.

Next, based on FIG.
02 will be described. In the drawing, the universal hinge 1
602, a rotation axis Y1 that enables rotation in the height direction Y;
The rotation axis X1 enabling the rotation in the left-right direction X is set to one of the intersections S1.
It has a structure to enable rotation in both axes by Cartesian at point.

A rotating shaft 1604 is provided inside the distal end of the first Y-shaped body 1604 provided on the suction main body 1050 and the second Y-shaped body 1605 attached to the connecting portion 1601.
a and 1405a are provided, respectively,
Are rotatably mounted in bearing holes (not shown).
Further, this universal hinge 1602 has a rotation axis Y1 and a rotation axis X.
Although 1 is the by Cartesian at one point of intersection S1, as in the first embodiment, an articulated hinge. For this reason,
Also in this embodiment, in addition to the elevation direction Y and the left-right direction X, the same rotation angle as the rotation angle P1 of the hand handle 300 can be transmitted to the suction main body 1050, and the suction body 510 can be turned. Therefore, the rotation axis Y1 and the rotation axis X
Need not intersect at one point of the intersection S1. Just the intersection S
In by intersection, it can be very co <br/> lymph click preparative universal hinge 1602.

Next, the structure of the bottom surface of the mouthpiece 510 will be described with reference to FIG. In this figure, this embodiment employs a universal wheel 1250 having excellent running characteristics, particularly excellent turning characteristics. The universal wheel 1250 has a four-wheel configuration including a pair of rear wheels 1251 provided on both sides (lower part in the drawing) behind the bottom surface and a pair of front wheels 1252 provided on both sides in the center of the bottom surface. The arrangement of the four wheels is such that the turning center S2 of the mouthpiece 510 is substantially located on an extension of the central axis Q of the connecting pipe 400 in a frequently used state where the connecting pipe 400 is at an angle of 45 degrees. It was done. With this arrangement, the twisting operation of the hand handle 300 can be performed easily and smoothly. In addition, this rearwardly offset wheel arrangement
It covers the rear part of the suction body 510 to which addition accompanying the movement operation transmitted from the hand handle 300 is likely to be added, and is effective in maintaining the posture of the suction body 510. Furthermore,
In this embodiment, by providing the guide means 1300 at the front of the bottom surface of the suction body 510, the clearance between the suction port 1010 disposed between the front wheel 1252 and the guide means 1300 and the cleaning floor surface is kept constant. Like that. Thus, the guide unit 1300 can be provided with a function like a wheel having no direction, so that the suction efficiency can be maintained while improving the turning performance.

The guide means 1300 of this embodiment
The brush stand 1215 in which the bundles of brushes 1310 are arranged in rows in the longitudinal direction of the mouthpiece 510 is attached to the tip of the flat portion 1302.

Referring to FIGS. 25 and 26, in this embodiment, the connecting hose 1630 is attached so that the tip of the mouthpiece 510 does not rise when the angle of the height direction Y is 0 degree. Thereby, even if the mouthpiece 510 is inserted into a low gap such as under the desk as shown in FIG.
Even in the frequently used posture of 5 degrees or the posture in which the angle in the left-right direction X is 90 degrees as shown in FIG. 25, the extra connecting hose 1630 obstructs the maintenance of the posture, the twisting operation of the hand handle, etc. It reduces the need to add to.

Further, in this embodiment, since the connecting hose 1630 forming the dust transfer passage and the support member of the suction body 510 are separated, for example, as shown in FIG. By removing the attached connecting hose 1603 from the suction body 510 and attaching a separate clearance nozzle, it is possible to suck in dust that is difficult to remove, for example, the dust accumulated at the corner where the walls are in contact with each other without disassembling the connection pipe 400. Operability can be improved. In this case, the clearance nozzle is located near the mouthpiece 510,
For example, an attachment device may be provided at the connection portion 1601 to attach the clearance nozzle.

As an application example of the above-described embodiment, the connection pipe 400 is shortened by increasing the length of the second Y-shaped body 1605, or the connection handle 400 is removed to remove the handle at hand.
By extending the length of the connecting hose 1630, for example, by directly attaching the second Y-shaped body 1605 having a long handle to the 300, the operating range of the connecting hose 1630 having a clearance nozzle can be widened. In this case, a holding member may be appropriately provided so that the connecting hose 1630 is held by the second Y-shaped body 1605 so that the connecting hose 1630 does not hinder the maintenance of the posture.

Further, according to this embodiment, since the dust conveying passage and the supporting member of the suction body 510 are separated, the operation range in the left-right direction X can be easily made 180 degrees or more. Thus, according to the second embodiment, the first
The same effect as that described above can be expected, and the dust transfer passage and the support member of the suction body 510 are separated, so that the flexible hinge 1602 can be made simple and compact.
Manufacturing cost can be reduced. Moreover, if one end of the connecting hose 1630 serving as the transport passage is removed, the auxiliary hose becomes another auxiliary suction port.
Further, if both ends are removed, the maintenance property and the cleaning property can be improved. Further, the operation range of the universal connection part 1600 can be widened.

[0124]

As described above, according to the present invention, since the free connecting portion for synchronizing the rotation angle of the hand handle and the rotation angle of the suction body is provided, a gap or the like which cannot be inserted by the conventional suction body is provided. Can be cleaned, and operability can be improved.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a vacuum cleaner according to the present invention.

FIG. 2 is an exploded perspective view of the mouthpiece according to the present invention.

FIG. 3 is a plan view showing the arrangement of the mouthpiece according to the present invention.

FIG. 4 is a side view of the mouthpiece according to the present invention.

FIG. 5 is an external perspective view of the mouthpiece according to the present invention.

FIG. 6 is an external side view of the mouthpiece according to the present invention.

FIG. 7 is an external rear view of the mouthpiece according to the present invention.

FIG. 8 is a bottom view of the mouthpiece according to the present invention.

FIG. 9 is a bottom view of the mouthpiece according to the present invention.

FIG. 10 is a cross-sectional view of a main part of the sliding member of the mouthpiece according to the present invention.

FIG. 11 is another application explanatory view of the sliding member of the mouthpiece according to the present invention.

FIG. 12 is a sectional view of a wheel of the mouthpiece according to the present invention.

FIG. 13 is an external perspective view of a freely connecting portion of the mouthpiece according to the present invention.

FIG. 14 is a plan view of a free connecting portion of the mouthpiece according to the present invention.

FIG. 15 is an assembling process diagram of a freely connecting portion of the mouthpiece according to the present invention.

FIG. 16 is a view showing another embodiment in which the assemblability and the disassembly of the universal connecting portion of the mouthpiece according to the present invention are improved.

FIG. 17 is a view showing a state of use of the mouthpiece according to the present invention.

FIG. 18 is a diagram showing a state of use of the mouthpiece according to the present invention.

FIG. 19 is a view showing a state of use of the mouthpiece according to the present invention.

FIG. 20 is a diagram showing a state of use of the mouthpiece according to the present invention.

FIG. 21 is an external perspective view showing another embodiment of the mouthpiece according to the present invention.

FIG. 22 is an exploded perspective view showing another embodiment of the mouthpiece according to the present invention.

FIG. 23 is a view showing a configuration of a freely connecting portion of the mouthpiece according to the present invention.

FIG. 24 is a bottom view showing another embodiment of the mouthpiece according to the present invention.

FIG. 25 is a side view showing another embodiment of the mouthpiece according to the present invention.

FIG. 26 is a view showing another application example of the mouthpiece according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner, 100 ... Vacuum cleaner main body, 101 ... Large wheel, 102 ... Free wheel, 103 ... Infrared light receiving part, 20
0: suction hose, 300: handle at hand, 301: handle, 302: operation unit, 303: infrared transmitter, 400
... Connection pipe, 401,402 ... Pipe, 500 ... Suction body, 100
0: suction body, 1001: lower case, 1002: front upper cover, 1003: rear cover, 1004: partition wall, 1
005: suction chamber, 1006: mounting part, 1007: ventilation path, 1008, 1024, 1025: notch, 1009 ...
Bell mouth body, 1010 suction port, 1011 rotary cleaning body, 1012 turbine, 1013, 1211, 150
3, 1504: rotating shaft, 1014: bearing, 1015: opening, 1016: ventilation hole, 1016a: slit, 10
17: Viewing window, 1018, 1019: Bearing part, 1020
... Thick part, 1021 ... Groove part, 1022 ... Opening / closing lever, 1
023: Handle recess, 1100: Sliding member, 1101, 1
214, 1314 ... brush, 1102, 1215, 131
3 ... brush stand, 1103 ... roller, 1200 ... wheels, 1
201: front wheel, 1202: rear wheel, 1203: rear wheel, 1203a: rear wheel, 1210: sliding member,
1212 recess, 1213 C-cut surface, 1300 guide means, 1301 pressure control plate, 1302 flat surface, 13
10: A bunch of brushes, 1311: Ink row, 1312, 1315 ...
Flow path, 1500: universal connection part, 1501: connection hose,
1502: universal hinge, 1502a: lower arm, 1502
b: upper arm, 1505: rotary shaft hole, 1506: pin, 1
507, 1521 ... connection part, 1510, 1511, 15
12, 1513 ... notch, 1514, 1515 ... position,
1516: lock mechanism, 1517: convex portion, 1518: concave portion, 1519: fitting hole, 1520: convex rib.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Koichi Niwa 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Pref. Hitachi, Ltd.Electrical Equipment Division, Taga Headquarters (72) Inventor Takeshi Hoshino Higashi Koigakubo, Kokubunji-shi, Tokyo 280-chome, Hitachi, Ltd.Design Research Institute, Inc. (72) Inventor Gen Nagai 1-280, Higashi-Koigakubo, Kokubunji-shi, Tokyo Hitachi, Ltd.Design Laboratory, 72-72 Hitachi, Ltd. Hitachi, Ltd.Design Research Center (72) Inventor Taku Owada 1-280, Higashi Koikekubo, Kokubunji City, Tokyo Hitachi, Ltd.Design Research Center, Inc. (72) Atsuhiko Urushihara 1-280, Higashi Koigakubo, Kokubunji City, Tokyo Design, Hitachi, Ltd. Laboratory (56) References JP-A-7-148090 (JP, A) JP-A-9-10144 (JP, A) JP-A-8-24176 (JP, A) JP-A-6-254005 (JP, A) JP-A-2-34137 (JP, A) JP-A 57-132650 (JP, U) JP-A 56-9348 (JP, U) JP-A 4-52843 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47L 9/00 A47L 9/02 A47L 9/04 A47L 9/24 A47L 9/28

Claims (8)

(57) [Claims] 1. A suction main body having an opening at a bottom surface and extending in a longitudinal direction, and a lower arm and an upper arm connected at one end to a connection pipe connected to the suction main body and at the other end to a hand handle. In a suction body of a vacuum cleaner having a free connection part, a wheel that is in contact with a floor surface is attached to the rear of the suction main body, and at a center of the suction main body that is located on a front side of the wheel,
One end of the lower arm is rotatably supported about one rotation axis with respect to the mouthpiece main body, and one end of the upper arm connected to the other end of the lower arm is the lower arm. The one rotation axis is rotatably supported around another rotation axis orthogonal to the one rotation axis, and further, the one rotation axis or the other rotation axis is
The lower arm or the upper arm with respect to the suction body
The upper arm is supported substantially rotatably in the height direction, and the rotation range and the rotation direction of the lower arm and the upper arm are substantially perpendicular to the floor surface in a state where the upper arm can be raised and lowered in the height direction. And a position along the left-right longitudinal direction of the suction main body from this position. 2. A suction body having an opening in the bottom surface and extending in a longitudinal direction, and a lower arm and an upper arm connected to a connection pipe having one end connected to the suction main body and the other end connected to a hand handle. In a suction body of a vacuum cleaner having a free connection part, a wheel that is in contact with a floor surface is attached to the rear of the suction main body, and at a center of the suction main body that is located on a front side of the wheel,
One end of the lower arm is rotatably supported on the suction body so that the lower arm can rotate in the height direction, and one end of the upper arm remains in a state in which the lower arm can rotate in the height direction. The other end of the lower arm is rotatably supported by the other end of the lower arm so that the upper arm is rotatable to a position along the left-right longitudinal direction of the mouthpiece body. A suction body of a vacuum cleaner, wherein a side is connected to the connection pipe. 3. The method of claim 1 or claim 2, connection hose having the flexibility in the interior of the upper arm and the lower arm portion is built, that the connecting hose is connected to said suction port body Characteristic mouthpiece of vacuum cleaner. 4. The lower arm portion according to claim 2, wherein one end of the lower arm portion has a floor surface around a rotation axis for rotating the lower arm portion in a height direction with respect to the mouthpiece main body.
Rotatably the to approximately 90 degrees relative to the position suction port is supported by a main body, one end of the upper arm portion which is connected to the other end of the lower arm portion in the height Direction of the lower arm portion The lower arm is moved about 90 degrees with respect to the floor in a height direction around a rotation axis orthogonal to the rotation axis to be rotated.
The upper arm portion extends along the left-right longitudinal direction of the mouthpiece main body to a position approximately 90 degrees with respect to the axis of the lower arm portion while being rotated to the position of the lower arm along the other end of the lower arm. A mouthpiece for a vacuum cleaner, which is rotatably supported. 5. A cleaner body having an electric blower therein, a suction hose connected to the cleaner body, a hand handle connected to the suction hose, a connection pipe connected to the hand handle, A suction body having an opening in the bottom surface and extending in the longitudinal direction and having a wheel in contact with the floor surface at the rear of the center in the longitudinal direction; and a front side of the wheel, located at the center of the suction body, one end of the suction body. A lower arm portion rotatably supported about one rotation axis with respect to the other rotation axis connected to the other end side of the lower arm portion and orthogonal to the one rotation axis of the lower arm portion; An upper arm portion rotatably supported at the same time and connected to the connection pipe, wherein the one rotation shaft or the other rotation shaft is the lower arm
Part or the upper arm in the height direction with respect to the suction body
Rotatably journaled in the direction of rotation and each rotational range of the lower arm portion and the upper arm portion and positioned substantially perpendicular to the upper arms floor in a state in which the upper arm can be raised and lowered in the height direction From this state, it is determined that the position along the left-right longitudinal direction of the suction main body can be taken, and the connection pipe is rotated around its axis, and the rotation is performed through the upper arm section and the lower arm section to the suction body. And changing the angle between the longitudinal direction of the mouthpiece main body and the axis of the connection pipe according to the degree of rotation of the connection pipe. 6. A cleaner main body having an electric blower therein, a suction hose connected to the cleaner main body, a hand handle connected to the suction hose, a connection pipe connected to the hand handle, A suction body having an opening in the bottom surface and extending in the longitudinal direction and having a wheel in contact with the floor surface at the rear of the center in the longitudinal direction; and a front side of the wheel, located at the center of the suction body, one end of the suction body. A lower arm that is rotatably supported in the height direction with respect to the other end of the lower arm connected to the other end of the lower arm and rotatably rotating the lower arm in the height direction. An upper arm portion rotatably supported to a position along the left-right longitudinal direction of the suction main body with the end side as a boundary, and an upper arm connected to the connection pipe, and rotating the connection pipe around its axis. Forward its rotation through the upper arm and the lower arm A vacuum cleaner, wherein the angle is formed between the longitudinal direction of the suction port main body and the axis of the connection pipe according to the degree of rotation of the connection pipe. 7. The method of claim 5 or claim 6, connection hose having the flexibility in the interior of the upper arm and the lower arm portion is built, that the connecting hose is connected to said suction port body Characterized vacuum cleaner. 8. The lower arm portion according to claim 6, wherein one end side of the lower arm portion has a floor surface around a rotation axis for rotating the lower arm portion in a height direction with respect to the mouthpiece main body.
Is supported by a rotatable said suction port body position to be approximately 90 degrees with respect to one end of the upper arm portion which is connected to the other end of the lower arm unit rotating the lower arm portion in the height direction The lower arm in a height direction about a rotation axis orthogonal to the rotation axis to be rotated with respect to the floor surface by about 90 degrees.
The upper arm portion extends along the left-right longitudinal direction of the mouthpiece main body to a position approximately 90 degrees with respect to the axis of the lower arm portion while being rotated to the position of the lower arm along the other end of the lower arm. An electric vacuum cleaner rotatably supported.