JP3054111U - Electric vacuum cleaner - Google Patents

Abstract

(57) [Problem] To provide an electric cleaning device in which the operability of cleaning is improved and the assemblability and disassembly of a mouthpiece are improved. The suction body includes a suction body having a length in the left-right direction longer than a length in a depth direction, and a connecting body for connecting the suction body to the connection pipe and forming a ventilation path for guiding dust into the inside of the connection pipe. The connecting body includes a first connecting portion and a second connecting portion, each having a ventilation path formed therein, and connected to each other such that the axial direction of each ventilation path is changeable.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a vacuum cleaner provided with a suction body that allows a user to easily adjust the angle of the suction body by operating a handle at hand.

[0002]

[Prior 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 the longitudinal direction of the extension tube as a rotation axis, thereby forming a joint structure provided on the suction body. To be able to rotate to some extent.

[0003] The structure includes a first joint attached to be able to swing vertically about both sides in the longitudinal direction of the mouthpiece 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 is fixedly attached to the extension tube at the other end. According to this mouthpiece, by rotating the 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 Application Laid-Open No. H5-245073.

[0005]

[Problems to be solved by the invention]

 The suction body of the conventional vacuum cleaner is formed based on a horizontally long suction opening for cleaning by moving the suction body in a front-rear direction through a handle at hand, so as to efficiently clean the floor surface. . By providing the two joints described above in order to improve the cleaning performance under the table and in the gap, the up-and-down movement of the hand handle and the suction body itself can be performed while the suction body is in close contact with the floor surface 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 on an operation range of the mouthpiece itself.

For example, when cleaning a 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, even if the handle is rotated by 90 degrees, the rotation angle of the joint can be rotated only about 45 degrees, so that the work must be performed in an unreasonable posture or with both hands. Did not become. Further, when cleaning low gaps such as under a softer, the bent joint cannot catch the expected cleaning efficiency.

[0008] An object of the present invention is to provide a vacuum cleaner in which the operability of cleaning is improved and the assemblability and disassembly of the mouthpiece are improved.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a vacuum cleaner main body having means for sucking dust together with an air flow, a flexible hose, a handle having an air passage, a connecting pipe, and a dust sucker. And a suction body provided with a suction port for sucking dust sucked from the suction port of the suction body together with the airflow into the vacuum cleaner through the connection pipe, the handle, and the hose. In the vacuum cleaner, the suction body forms a suction main body having a length in the left-right direction longer than a length in a depth direction, and a ventilation path for connecting the suction main body to the connection pipe and guiding dust to the inside thereof. The connecting body includes a first connecting portion and a second connecting portion, each having a ventilation passage formed therein, and connected to each other such that the axial direction of each ventilation passage is changeable. 1st consolidation Is connected to the rear center of the mouthpiece body of the mouthpiece, the second connection portion is connected to the connection pipe, and the first connection portion and the second connection portion are resin molded articles forming the ventilation path on the inner surface. Wherein the mouth body and the first connection part and the second connection part, which are resin molded products, and the connection pipe are connected by a structure for preventing air leakage, and the mouth body is a lower part of the mouth body. A lower member that is long in the left-right direction, and a rear upper suction member and a front upper suction member that cover the upper part of the lower member. The lower member includes the suction port that is long in the left-right direction for sucking dust. In addition, there is a portion that forms an air passage connected to the connecting body at the center in the left-right direction behind the suction port, and a pair is formed behind the suction port so as to sandwich the portion that forms the air passage. Overhang A wheel formed and planted on the pair of overhang portions is provided, and the rear upper suction member covers an upper rear center of the lower suction member so as to cover an upper portion of the overhang portion of the lower suction member. The front upper suction member is detachably attached to the lower suction member so as to cover an upper portion of the suction port, and a space formed between the lower suction member and the front upper suction member. In addition, a rotary brush is provided along the suction port.

[0010]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

First Embodiment FIGS. 1 to 25 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 is indicated generally by the reference numeral 1, and includes a vacuum cleaner main body 100 having a blower (not shown) for sucking dust, and one end attached to the vacuum cleaner main body 100. A flexible suction hose 200 connected to the blower, a hand handle 300 attached to the other end of the suction hose 200 and connected to the blower, and a suction hose attached to the hand handle 300. 200, and a mouthpiece 550 attached to the connection pipe 400 and connected to the connection pipe 400.

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

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

The hand handle 300 has a function of communicating the suction hose 200 with 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 suction body 550. ing. The hand handle 300 is fixedly connected to the suction hose 200 and is detachably attached to the connection pipe 400 so that the suction hose 200 and the connection pipe 400 are communicated with each other to provide a dust conveyance path. Has formed. Further, the hand handle 300 has an angle of about 110 degrees with the central axis B2 at the longitudinal direction of the connecting pipe 400, that is, at the upper end on the extension of the central axis B2 of the connecting pipe 400, and the longitudinal direction is A handle portion 301 is provided at a position substantially coincident with the connection direction between the suction hose 200 and the connection pipe 400. 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 550 can be operated. In particular, according to the handle portion 301, the twisting operation, that is, the rotation P1 about the central axis B2 can be easily performed. At this time, since the handle portion 301 is provided on the upper portion, the suction hose 200 provided below does not hinder the twisting operation.

Further, an operation unit 302 for operating the operation of the vacuum cleaner main body 100 is provided near the handle unit 301. An infrared transmitting section 303 is provided at an end of the operation section 302 and the handle section 301, and transmits an operation signal from the infrared transmitting section 303 to the infrared receiving section 103 provided in the vacuum cleaner main body 100. In addition, ON / OFF of the power of the vacuum cleaner main body 100 and various controls can be performed. Since the handle 300 is provided with a power source such as a battery (not shown), it is not necessary to perform electrical wiring on the suction hose 200. In addition, since the two infrared transmission units 303 are provided, the operation signal can be reliably transmitted to the electric sweeper main body 100 using the reflection from the ceiling or the wall surface, so that erroneous operation can be reduced.

The connection pipe 400 connects the hand handle 300 and the suction body 550, and further connects the hand handle 300 and the suction body 550 so as to have a predetermined distance relationship. It has a function of transmitting the movement (movement or rotation) of 300 as the movement (movement or rotation) of suction body 550. 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, and a hand handle 300 is attached to one side and a mouthpiece 550 is detachably attached to the other side. I am trying to install it.

The mouthpiece 550 is provided with a mouthpiece body 1000 having a mouthpiece 1010 (see FIG. 2) for sucking dust on the bottom surface, and the mouthpiece body 1000 connected to the connection pipe 400, through the connection pipe 400. In response to the movement of the hand handle 300 transmitted by the hand, the bottom surface of the suction main body 1000 always operates so as to be in contact with the floor surface, and the air flow including the dust sucked from the suction main body 1000 flows to the connection pipe 400. And a free connecting portion 1530 that communicates so as to be guided.

The suction main body 1000 has a suction surface 1010 (see FIG. 2) provided with a rotary brush 1011 (see FIG. 2) for sucking dust on the floor surface on the bottom surface. The free connecting portion 1530 connects the connecting pipe 400 to the suction main body 1000 so as to be relatively rotatable in the height direction Y and the left and right direction X, and keeps the rotation P1 of the twisting operation of the hand handle 300 as it is. A mechanism for transmitting the rotation to the rotation P2 of the suction main body 1000 is provided. In this embodiment, a free connecting portion 1530 is rotatably attached to the suction main body 1000 and is rotatable in the vertical direction Y, and one end is attached to the connection pipe 400 and the other end is attached to the connecting tube 400. The lower arm 1531 and the upper arm 1532 attached so as to enable rotation in the left-right direction X.

In this embodiment, although described in detail later, the angle in the elevation direction Y is set to be operable within a range of about 90 degrees from the floor surface and about 360 degrees in the left-right direction X. . The angle in the height direction Y may be about 90 degrees or more from the floor surface in consideration of the storability described later. In addition, if the horizontal direction X is about 180 degrees, there is no problem in cleaning performance.

The mouthpiece 550 is provided with a bumper portion 1033 provided with a sliding member 1100 around the mouthpiece main body 1000, thereby improving the cleaning performance near the wall and the bottom face in the longitudinal direction of the mouthpiece 1000. Wheels 1200 for smooth movement are provided. Hereinafter, for the sake of explanation, the moving direction suitable for cleaning the wall crests and the like in which the mouthpiece 550 moves in parallel with the longitudinal direction is referred to as a vertically long moving direction (a vertically long moving direction as viewed from the operator) V1. The moving direction suitable for normal cleaning in which the mouthpiece 550 moves in parallel with the short side direction is referred to as a horizontally long moving direction (a horizontally long moving direction viewed from the operator) V2.

Furthermore, by providing a dust guide means 1300 (see FIG. 9) at the front (between the tip) of the suction port 1010 provided on the bottom surface of the suction main body 1000, dust on the wall which is difficult to remove can be efficiently removed. Can inhale well.

As described above, according to the vacuum cleaner 1 according to the present embodiment, since the operation signal is transmitted via the infrared signal, there is no need to wire the suction hose 200, so that the suction hose 200 is lightweight. Is achieved. Therefore, 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 suction body 550 can be improved. In particular, a major feature of this embodiment is that the operation of the mouthpiece 550 via the handle 300, for example, the rotation P1 of the twisting operation of the handle, is directly used as the rotation P2 of the mouthpiece 550. For example, the operation performed by the user with the handle 300 at hand can be smoothly performed as the movement of the suction body 550. Specifically, for example, by twisting the handle 300 by 90 degrees (rotation P1), the mouthpiece 550 is rotated by 90 degrees (rotation P2) as shown by the dotted line in FIG. With the operation of moving back and forth, it is possible to clean the floor surface near the wall while moving the suction main body 1000 back and forth along the wall surface in the left-right direction V1. At this time, the suction member 550 can be smoothly moved by the sliding member 1100 and the wheel 1200, and the damage to the wall surface can be reduced. Furthermore, the dust on the hard-to-remove wall can be removed by the guide means 1300. It can inhale efficiently.

Hereinafter, the schematic structure of the mouthpiece 550 will be described with reference to FIGS. 3 to 5 based on FIG. FIG. 2 is a component configuration view of the mouthpiece 550, FIG. 3 is a cross-sectional view of a planar arrangement of the mouthpiece 550, and FIGS.

First, in FIG. 2, as described above, the mouthpiece 550 includes the mouthpiece main body 1000 and the free connecting portion 1530. The mouthpiece main body 1000 includes a lower case 1001 forming the main skeleton of the mouthpiece main body 1000, a front upper cover 1002 covering the front of the mouthpiece main body 1000, and a rear upper cover 1003 covering the rear of the mouthpiece main body 1000. Is done.

The lower case 1001 is provided with a partition wall 1004 which divides the inlet main body 1000 back and forth slightly behind, a front part is a suction chamber 1005, and a center of the rear part is a mounting part 1006 of the free connecting part 1530, Both sides of the mounting portion 1006 are provided as ventilation passages 1007 for driving a turbine 1012 described later. A notch 1030 for guiding dust in the suction chamber 1005 to the free connecting portion 1530 is formed in the center of the partition wall 1004. The cutout portion 1030 is formed in a bell mouth shape that opens in a trumpet shape on the suction chamber 1005 side, so that an air flow containing dust is smoothly guided to the free connection portion 1530.

A rear upper cover 1003 covers an upper part of a mounting portion 1006 for the free connecting portion 1530 and connects a part of the free connecting portion 1530 to the lower case 1001, and is not shown. It can be attached with screws. Further, front upper cover mounting portions 1031 for fixing the front upper cover 1002 are provided on both sides of the front portion of the rear upper cover 1003. An opening / closing lever 1022 (see FIGS. 8 and 10) is provided on the rear side (the rear side in the drawing) of the front upper cover mounting portion 1031. Further, the rear side of the front upper cover mounting portion 1031 is exposed to the rear side of the suction main body 1000, and the front side is mounted so as to constitute a part of the ventilation path 1007.

The front upper cover 1002 covers the upper part of the suction chamber 1005 and the ventilation path 1007, and forms the suction chamber 1005 and the ventilation path 1007 together with the lower case 1001. The not-shown ribs provided on both sides of the front part are hooked on the lower case 1001, and the mounting ribs 1037 (see FIG. 10) provided on both sides of the rear part are not shown in FIG. At 1022, it is designed to be detachably attached.

A suction port 1010 is formed in the lower case 1001 below the suction chamber 1005, and a rotary brush 1011 for scraping up dust and the like is disposed in the suction chamber 1005 above the suction port 1010. The rotating brush 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. The turbine 1012 is attached to the.

The rotating brush 1011 and the turbine 1012 insert the rotating shafts 1013 provided at both ends of the turbine 1012 into bearings 1014 formed at both ends in the suction chamber 1005, respectively. The rotating brush 1011 and the turbine 1012 are rotatably disposed in the suction chamber 1005 by being pressed by a bearing (not shown) provided inside.

Notches 1032 are formed on both sides of the partition wall 1004 behind the turbine 1012, and ventilation holes 1016 are provided on both sides of the front upper cover 1002 that covers the ventilation passage 1007. Is formed, and the air taken in through the ventilation holes 1016 is blown through the ventilation passage 1007 from the opening 1015 to the turbine 1012 so that the rotating brush 1011 attached to the turbine 1012 rotates. Has become.

Here, the driving of the rotary brush 1011 will be described in detail with reference to FIG. 3. In this embodiment, since the turbine 1012 is employed, the turbine 1011 includes a number of nozzles (not shown) for blowing air toward the turbine 1012. The multiblade nozzle is disposed so as to substantially cover the outer periphery of the turbine 1012. The multi-blade nozzle is divided into upper and lower parts, and the upper multi-blade nozzle is fixed to the back surface of the front upper cover 1002, and the lower multi-blade nozzle is screwed to the lower case 1001. Fixed.

The air blown to the turbine 1012 rotates the turbine 1012, and rotates at a high speed as a swirling flow together with an air flow including dust wound up by the rotating brush 1011 sucked from the suction port 1010. It gathers at the center while being wound around the brush 1011, and is guided to the main body 100 of the electric vacuum cleaner through the notch 1030 and the free connecting part 1530.

As described above, according to the present embodiment, the suction body 550 rotates the turbine 1012 and the rotating brush 1011 by the ventilation holes 1016, and furthermore, the cleaning surface is formed by the synergistic effect of the swirling flow generated in the suction port 1010. Dust collection performance can be greatly improved because dust can be absorbed while rolling up dust.

Returning to FIG. 2, a viewing window 1017 is provided at the front center of the front upper cover 1002 located above the rotating brush 1011. The viewing window 1017 is made of a transparent resin material, for example, an acrylic resin that is resistant to scratches. It is preferable to apply a coating, for example, UV coating, on the inner surface of the suction chamber 1005 of the viewing window 1017 in order to reduce scratches caused by dust emitted by the rotating brush 1011. By forming it as a convex lens to make it easier to see, the dirt on the rotating brush 1011 can be known from the outside. In addition, since the operation status of the rotating brush 1011 can be visually observed through the viewing window 1017, for example, a hearing impaired person who cannot hear a driving sound or an abnormal sound can be operated by the operating condition of the vacuum cleaner 1 or a foreign object during driving. It is possible to know a trouble such as a stop of the rotating brush 1011 due to the mixing. Therefore, according to this embodiment, it is possible to easily confirm the operation state without an electric display requiring electric wiring.

On the other hand, the free connecting portion 1530 includes a cylindrical lower arm 1531 and an upper arm 1532. As shown in FIG. 4, the lower arm 1531 and the upper arm 1532 are parallel to the tube axis B1 of the lower arm 1531 and the tube axis B2 of the upper arm 1532 (the central axis of the connection tube 400) when viewed from the side. The upper arm 1532 is located at an upper position, the lower arm 1531 is located at a lower position, and one end of each of the arms 1531 and 1532 is arranged to overlap. A rotation connection portion) 1533 is provided. The first rotating shaft 1533 communicates the cylindrical arms 1531 and 1532 and also allows the two to relatively rotate, thereby enabling the rotation in the left-right direction X.

In this embodiment, a tubular rotating shaft portion 1533a is provided above one end of the lower arm portion 1531, and a tubular concave rotating bearing portion 1533b is provided below one end of the upper arm portion 1532. The first rotating shaft (first rotating connecting portion) 1533 is configured by rotatably mounting the rotating bearing portion 1533b and the rotating shaft portion 1533a without air leakage. Further, by providing a lock ring 1534 in the first rotation shaft 1533, the first rotation shaft 1533 can be fixed (positioned) at a predetermined rotation position.

On the other hand, the other end of the lower arm portion 1531 is provided with a second rotation shaft (second rotation connection portion) 1535 that enables rotation in the height direction Y (vertical direction in the drawing). . In this embodiment, the second rotating shaft 1535 includes a rotating shaft 1503 formed on both sides of a cylindrical lower arm 1531, a bearing 1018 formed on an attachment portion 1006 of the lower case 1001, and a rear portion. It comprises a bearing portion 1019 formed on the upper cover 1003, and the rotary shaft 1503 is sandwiched between the bearing portion 1018 and the bearing portion 1019 to be attached, so that the free connection portion 1530 is rotatably connected to the suction main body 1000. doing .

On the other hand, a connecting portion 1507 is formed at the other end of the cylindrical upper arm portion 1532 so as to be detachably connected to the connection pipe 400. Further, in this embodiment, the design of the upper arm 1532 is improved by forming the upper surface of the upper arm 1532 with a cover 1536 as a separate member. In general, when the thickness of a resin molded product is made non-uniform, there is a problem that a design property such as sink marks is impaired. In this embodiment, as shown in FIG. 4, the passage of the air flow between the lower arm portion 1531 and the upper arm portion 1532 is continuous with a gentle curve without unevenness so that the air flow including dust can be resisted. However, if this passage is formed with the same thickness, its appearance becomes uneven by the second rotating shaft 1533 and the like, which is subject to design restrictions. Therefore, in this embodiment, the upper portion of the upper arm portion 1532, which is most noticeable in appearance, is formed of the upper cover 1536 of a separate member, so that the weld lines and sink marks are made less noticeable while improving the strength.

4 and 5, in this embodiment, since the rotation angle range of the second rotation shaft 1535 in the height direction Y is set to 90 degrees, the angle in the height direction Y shown in FIG. The shutter mechanism 1537 is adopted in order to allow the air passage of the notch 1030 and the lower arm 1531 to communicate with a sufficient opening area even when the angle of the vertical direction Y shown in FIG. doing. The shutter mechanism 1537 connects the two shutters 1538a and 1538b, which move around the second rotation shaft 1535 with the movement of the lower arm 1531 so as to close the upper and lower portions of the lower arm 1531, with the lower arm 1531. It is provided so as to sandwich it. In this embodiment, as shown in FIG. 4, when the angle in the height direction Y is 0 degrees, the upper shutter 1538a is provided from the mouth main body 1000 (rear cover 1003) to the rib provided at the end of the upper arm 1532. And a rib provided at the end of the upper shutter 1538a is hooked and pulled out to close the gap between the lower arm 1531 and the suction main body 1000, and the lower shutter 1538b is housed in the suction main body 1000 (lower cover 1001). From this state, the lower arm 1531 increases the angle in the height direction Y, and when the lower arm 1531 rotates to a predetermined angle, the upper shutter 1538a is pushed by the lower arm 1531 and the upper body Conversely, the lower shutter 1538b is pulled out by the rib provided at the end of the lower arm 1531 and the rib provided at the end of the lower shutter 1538b, and the lower shutter 1538b is pulled out. As shown in FIG. 4, contrary to FIG. 4, when the angle in the vertical direction Y is 90 degrees, the lower shutter 1538b is pulled out, and the upper shutter 1538a is stored.

Even if the lower arm 1531 is rotated by 90 degrees by the shutter mechanism 1537, the air passage between the notch 1030 and the lower arm 1531 can be prevented while air leakage is prevented and a sufficient opening area is maintained. Can communicate. In addition, the openings of the notch 1030 and the lower arm 1531 can be made entirely large, so that large dust can be easily passed and clogging can be reduced. In this embodiment, a robust structure is achieved by employing a pair of shutters 1538, but a plurality of shutters may be employed. Further, the structure may be further simplified by using a flexible elastic material or bellows instead of the shutter 1538. Further, the opening area of the cutout portion 1030 and the lower arm portion 1531 is increased in the lateral direction so as to increase the opening area, so that the opening area of the ventilation passage can be secured without employing the shutter mechanism 1537. it can. In addition, in this case, since the shutter 1538 is not used, dust mixed between the members can be reduced, and the rotation performance can be improved.

As described above, according to the universal connection portion 1530 according to the present embodiment, two orthogonal rotation axes, that is, the second rotation axis 1535 in the height direction Y and the first rotation axis in the horizontal direction are provided. 1533, the rotation P1 of the twisting operation of the hand handle 300 can be converted into the rotation P2 of the turning operation of the mouthpiece 550 as it is. In addition, according to the universal connecting portion 1530, the two rotating shaft structures, in particular, the first rotating shaft 1533 have a simple rotating structure, so that the manufacturing is easy and the appearance can be simplified without any irregularities. Therefore, the design can be improved, and safety measures such as pinching of a finger can be improved, and cleanability can be improved.

Further, a bumper portion 1033 made of an elastic material such as rubber or a soft resin is provided on the upper portion of the lower case 1001. The bumper portion 1033 is provided on the outer periphery at a position where the lower case 1001 and the front upper cover 1002 are in contact with each other to improve the airtightness of the suction chamber 1005, and is provided so as to protrude around the suction main body 1000, such as furniture. It is intended to reduce damage to the user.

In this embodiment, the surroundings of the bumper portion 1033, especially the long side opposite to the attachment portion 1006 to which the free connecting portion 1530 which is the front portion of the mouthpiece 550 is attached, are planted with nylon or the like. By providing the sliding member 1100 by insert molding, it has a shock absorbing function of preventing damage to furniture and the like, and cleans while sliding along the wall and the like while pressing the mouthpiece 550 against the wall and the like. can do.

In this embodiment, the bumper portion 1033 is employed. However, by forming a thick portion protruding outward from the other peripheral side around the upper portion of the lower case 1001, the overall rigidity is improved. And the thickness of the thick portion 1020 may be provided with the sliding member 1100 to reduce the number of components.

As described above, the mouthpiece 550 according to the present embodiment rotates the rotary brush 1011 using the turbine 1012 that rotates by the suction airflow of the blower provided in the vacuum cleaner main body 100 as a drive source. Weight can be reduced. In addition, since the mounting portion 1006 of the free connecting portion 1530 is provided at the rear center of the suction chamber 1005 and the ventilation passages 1007 are arranged on both sides of the mounting portion 1006, the overall height of the suction main body 1000 is reduced to make it compact. be able to. In addition, since the attachment of the universal connection portion 1530 requiring rigidity and airtightness is solved by attaching the rear upper cover 1003, the number of parts can be reduced, and the assemblability can be improved. Further, parts other than the part covered by the rear upper cover 1003 can be opened simply by removing the front upper cover 1002, and the rotating brush 1011 can be easily removed, so that disassembly and cleanability can be improved. it can. In addition, assembling can be completed only by simply attaching the rotating brush 1011 and attaching the front upper cover 1002, so that the handleability can be improved.

Next, the detailed structure of the mouthpiece 550 will be described in detail with reference to FIGS. 6 is an external perspective view, FIG. 7 is an external side view, FIG. 8 is an external rear view, FIG. 9 is a bottom view, FIG. 10 is an explanatory view of an opening / closing lever, FIG. 11 is a sectional view of a main part of a sliding member, and FIG. FIG. 13 is an explanatory view of a wheel elevating mechanism, FIG. 14 is an explanatory view of another applied wheel, FIG. 15 is a cross-sectional view of a first rotating shaft, and FIGS. FIG. 18 is a lock mechanism diagram of a first rotating shaft.

First, in FIG. 6, the mouth body 550 of the present embodiment has a thin appearance, the front portion of the mouth body 1000 is extended to both sides, and the free connecting portion 1530 arranged at the center of the rear portion is provided. The mounting portion 1006 has a "substantially T-shaped" planar shape projecting rearward. By making the entire upper surface into a shape that is mainly a round shape, cleanability is improved, and by making each corner portion into a round shape, furniture and the like are not damaged.

Further, as shown in FIG. 7, FIG. 4, and FIG. 5, the tip of the mouthpiece body 1000 has a substantially wedge-shaped side surface having a convex arcuate upper surface, thereby securing a rotation range of the rotating brush 1011. The suction chamber 1005 has a shape that allows the airflow to be easily introduced into the bell-mouth-shaped notch 1030, and has a compact form as a whole.

Returning to FIG. 6, in this embodiment, the bumper portion 1033 is formed by connecting the suction body 550 to furniture or the like, that is, both sides in the longitudinal direction including four corners protruding on both sides of the suction main body 1000. And a belt-like and convex shape continuously formed on a part of the front part and the rear face. The sliding member 1100 is continuously provided on the bumper portion 1033. As shown in FIG. 11 (a), the sliding member 1100 implants a brush 1101 having a short bristle of Nylon material into a brush base 1102, and inserts the brush base 1020 into a groove 1021 formed in the bumper section 1033. Thus, the brush 1101 is fixed to the bumper portion 1033. Here, the number of parts can be reduced by attaching the brush stand 1102 having the same length as the bumper section 1033 to the groove section 1021, but it is also possible to facilitate the molding by dividing and attaching the brush stand 1102. . Further, the brush stand 1102 may be formed integrally with the bumper portion 1033 to improve the assemblability, but the cost of the equipment may be reduced by bonding or press fitting using elasticity of a resin material. .

Further, the purpose of adopting the sliding member 1100 is to make it easy to move the front part of the mouthpiece 550 in the vertically long moving direction V1 (see FIG. 1) along the wall surface or the like. Therefore, the sliding member 1100 only needs to improve the sliding. For example, as shown in FIG. 11 (b), a plurality of protrusions 1034 and / or the A plurality of protruding strips formed along the longitudinal direction may be used.

In this embodiment, since the projection 1034 is formed integrally with the bumper portion 1033, the material is made of a resin material having high hardness, and a shock is applied to the inside of the bumper portion 1033 to reduce scratches and shock. A relaxing space 1035 is formed. In addition, only the protrusion 1034 is formed as a material having a high hardness such as fine beads or a wire by embedding it in a predetermined position of the bumper portion 1033 made of a material having a low hardness which is generally adopted. By doing so, it is possible to make the structure resistant to impact while improving the slip. In this case, the protrusion 1034 may be embedded in the bumper portion 1033 at the time of molding, or may be attached via a pedestal as shown in FIG.

As another sliding member 1100, for example, a roller 1103 may be employed as shown in FIG. In this case, it may be attached to the bumper portion 1033, or may be attached directly to the lower case 1001. A better roller can be provided with an elastic material such as rubber or velvet around the roller 1103, or can be made into a tire 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 550 as shown in FIG. More preferably, the slipperiness can be improved by attaching to the corners on both sides of the front part of the mouthpiece 550. Further, as shown in FIG. 7A, by providing the mouthpiece 550 in the center of the front part in addition to the corners on both sides of the front part, the unevenness of the wall surface can be easily absorbed. More preferably, the mobility can be enhanced by providing the four corners protruding on both sides of the suction main body 1000 and the center of the front part. 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. 6, 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. By adopting a thicker sliding material 1100, the bumper function can be further improved.

Further, in the embodiment shown in FIG. 6, the sliding member 1100 is provided around the bumper portion 1033 as a separate member to improve the slip while providing the shock absorbing function. By forming a thickened portion and providing the sliding member 1100 directly or integrally with the thickened portion, the rigidity of the mouthpiece main body 1000 is enhanced, and the sliding member 1100 is provided with an impact absorbing function of preventing damage to furniture and the like, thereby preventing slippage. Therefore, there is no need to provide a bumper portion 1033 made of an elastic material such as rubber or soft resin as a separate component.

Next, returning to FIG. 6, in this embodiment, the size of the mouthpiece 550 is set to 250 mm, the depth D1 of the mouthpiece body, and both sides are stretched in a state in which the free connecting portion 1530 is extended. The depth D2 of the protruded root portion and the depth D3 of both end portions are set to 137 mm, 96 mm, and 87 mm, respectively. In this embodiment, since the length D4 of the connecting portion 1507 is set to 50 mm, the depth when the connecting portion 1507 is attached to the connection pipe 400 is set to 254 mm. Further, as shown in FIGS. 6 and 9, the height of the mouthpiece main body 1000 is set to 61 mm, the width W is set to 280 mm, and the width W1 of the mouthpiece 1010 is set to 216 mm.

Next, referring to FIG. 7 and FIG. 8, the suction body 550 according to this embodiment has a flat upper surface with a rounded shape so that dirt on the upper surface can be easily wiped off and before the upper surface is formed. The structure in which the upper cover 1002 can be easily removed improves cleanability. The front upper cover 1002 has a structure in which sinks and weld lines during manufacturing are hardly generated while maintaining strength.

In order to realize this effect, the mouthpiece 550 according to the present embodiment covers the upper surface of the mouthpiece 550 other than the attachment portion 1006 of the free connection portion 1530 with a front upper cover 1002, and An opening / closing lever 1022 for detachably attaching the cover 1002 is provided on the front upper cover mounting portion 1031. This structure will be described with reference to FIG.

As described with reference to FIG. 2, the mouthpiece 550 according to this embodiment has front upper cover mounting portions 1031 for fixing the front upper cover 1002 on both sides of the rear upper cover 1003. The front upper cover 1002 is detachably attached via a pair of open / close levers 1022 slidably provided in the upper cover attachment portion 1031. As shown in FIG. 10A, the front upper cover 1002 has a cutout portion 1036 formed at a portion corresponding to the opening / closing lever 1022, and a lower end portion 1037a is formed in an L shape inside the cutout portion 1036. A mounting rib 1037 is provided. The opening / closing lever 1022 is attached to the front upper cover attaching portion 1031 so that the upper portion of the L-shaped lower end portion 1037a can slide laterally. Therefore, at the position where the opening / closing lever 1022 overlaps with the mounting rib 1037, the opening / closing lever 1022 can be fixed, and at the position where the opening / closing lever 1022 does not overlap, the front upper cover 1002 can be removed. According to the structure of this embodiment, since the opening / closing lever 1022 does not need to be provided on the front upper cover 1002, it is not necessary to form a rib or the like necessary for providing the opening / closing lever 1022.

As shown in FIG. 6, ventilation holes 1016 are provided on both sides behind the upper surface of the front upper cover 1002. The ventilation hole 1016 is composed of a plurality of slits 1016a divided along the longitudinal direction of the mouthpiece 550. The slits 1016a are formed in a concave shape so as to be one step lower from the surroundings, and punched in the concave shape. An opening in the shape of a circle is integrally formed with the front upper cover 1002. According to the structure of the ventilation hole 1016, the punching-shaped opening portion, which is weakened in strength, is formed one step lower than the surroundings and is divided into a plurality of slits, so that the strength of the front upper cover 1002 itself is reduced. As well as increasing the strength of the punched opening against impact.

Further, the front upper cover 1002 is provided with a handle recess 1023 for removing the front upper cover 1002 on both side surfaces.

According to this embodiment, the front upper cover 1002 can be formed in a simple shape by separating the opening / closing lever 1022 from the front upper cover 1002. Occurrence can be reduced. In addition, the simple shape allows the front upper cover 1002 to be reduced in weight, easy to clean, and improved in design. In addition, the opening / closing lever 1022 is provided on the rear surface that is hardly subjected to impact, and has a structure that is hardly damaged by external force even if it comes into contact with furniture or the like during cleaning.

Further, the strength of the front upper cover 1002 can be improved by providing the ventilation holes 1016. Moreover, by providing the ventilation holes 1016 in the front upper cover 1002 that can be easily attached and detached, the ventilation holes 1016 that are easily soiled by removing the front upper cover 1002 can be washed from the front and back, so that the cleaning performance can be improved.

Further, since the hand-holding recess 1023 is provided on the side surface of the mouthpiece 550 (front upper cover 1002), the index finger or the middle finger is inserted into the hand-holding recess 1023, and the thumb is moved to the opening / closing lever 1022. The front cover 1002 can be easily removed from the mouthpiece 550 by hooking and sliding the opening / closing lever 1022 outward to release the engagement, and pinching it with the thumb and the index finger (middle finger).

Further, since the opening / closing lever 1022 and the hand-holding recess 1023 that are apt to accumulate dirt are provided on a vertical surface, dirt is less likely to accumulate. Moreover, the front upper cover 1002 can be easily attached, and the upper surface of the attached suction body 550 has a continuous flat flat shape with the front upper cover 1002 and the rear upper cover 1003, so that dirt can be easily removed. Can be wiped off.

In FIG. 9, the lower case 1001 has the entire suction body 550 moved in the horizontally long movement direction V2 and the vertically long movement direction V1, and has a certain distance between the bottom surface of the suction body 550 and the cleaning surface. A plurality of wheels 1200 are arranged to keep. The wheel 1200 includes a pair of front wheels 1261 arranged on both sides at the front of the bottom surface of the mouthpiece 550, a pair of rear wheels 1262 arranged behind the pair, and a pressure on the cleaning surface during use of the electric vacuum cleaner 1. A rear wheel 1263 for receiving the vehicle, and a pair of retractable wheels 1264 that are used to protrude from the bottom surface when moving in the left-right direction V1.

Here, the front wheel 1261 and the rear wheel 1262 are arranged at positions facing each other. That is, a pair of front wheels 1261 and rear wheels 1262 are located on the radially extending portions of the two turbines 1012 of the lower case 1001, respectively, and the clearance between the suction port 1010 at the lower part of the turbine 1012 and the cleaning floor surface. Is kept constant. Further, a large rear wheel 1263 is provided below the free connecting portion 1530 that receives the force of the handle 300 most, thereby increasing rigidity and running performance. The clearance between the cleaning floor surface and the cleaning floor is kept constant by receiving the cleaning wheel 1203.

As described above, the mouthpiece 550 according to the present embodiment is largely characterized in that the mouthpiece 550 is moved in the vertically long movement direction V1 in addition to the movement in the horizontally long movement direction V2. In this embodiment, a pair of retractable wheels 1264 as shown in FIG. 13 are provided below the second rotating shaft 1355 in order to achieve the movement in the vertically long moving direction V1. Each of the front wheel 1261, the rear wheel 1262, and the rearmost wheel 1263 has an axle in a direction parallel to the longitudinal direction of the mouthpiece 550, and is a wheel that is rotatable in the horizontally elongated moving direction V2 of the mouthpiece 550. However, the appearing / retracting wheel 1264 has a 90-degree axle direction different from the three wheels, and is a wheel rotatable in the vertically long moving direction V1 of the mouthpiece 550. Further, the retractable wheel 1264 is housed inside the mouthpiece 550 at a normal use mode, that is, at an angle at which the hand handle 300 is not twisted up to 90 degrees as shown in FIGS. As shown in FIG. 20 (c), the handle is twisted 90 degrees to rotate the mouthpiece 550 90 degrees, and the mouthpiece 550 projects in a state of being moved in the vertically long moving direction V1. And This structure will be described in detail with reference to FIG.

First, as shown in FIG. 13A, in this embodiment, the projections 1540 are respectively provided on a pair of sliding surfaces 1539 formed around the rotation shaft 1503 of the second rotation shaft 1355. Provided. The projection 1540 is formed so that the angle of the lower arm 1531 in the height direction Y is 90 degrees, as shown in FIG. On the other hand, an opening 1541 is formed in the lower case 1001 below the rotating shaft 1503, and a retractable wheel 1264 is attached to the opening 1541. The haunting wheel 1264 includes a wheel base 1266 having a rotation support shaft as a rotation shaft 1265, a wheel 1267 attached to the wheel base 1266, and a suction body 550 attached to the rotation shaft 1265 and using the wheel base 1266. And a spring body 1268 such as a coil spring, a torsion spring, or a leaf spring to be housed inside.

The position and the size of the projection 1540 and the wheel 1264 are set such that the wheel 1264 projects at a position where the angle of the lower arm 1531 in the height direction Y is 90 degrees. Although the protrusion 1540 is provided on the sliding surface 1539 in this embodiment, the protrusion 1540 may be provided separately.

According to this embodiment, as shown in FIGS. 7A and 7B, the state in which the angle of the lower arm 1531 in the height direction Y does not reach 90 degrees, that is, the twist angle of the hand handle 300 When P1 is not twisted by 90 degrees, the retractable wheel 1264 is housed inside the suction body 550, so that the suction body 550 is moved in the horizontal direction V2 through the front wheel 1261, the rear wheel 1262, and the rearmost wheel 1263. It can move smoothly.

On the other hand, when the twist angle P 1 of the hand handle 300 is twisted by 90 degrees, the angle of the lower arm 1531 in the height direction Y becomes 90 degrees as shown in FIG. The rear wheel 1262 and the rearmost wheel 1263 protruding from the body 550 are floated from the floor (the rearmost wheel 1263 is floated t0 from the floor). For this reason, the retractable wheel 1264 receives the force of the handle 300 most, so that the mouthpiece 550 can be easily moved in the vertically long moving direction V1 via the retractable wheel 1264 and the front wheel 1261.

Next, in this embodiment, the front wheel 1261, the rear wheel 1262, and the rearmost wheel 1263 are formed of a material that is easy to skid, and the contact surface with the floor surface is subjected to gloss treatment, and the shape is changed to a drum. It has a shape. For this reason, since it is easy to slide also in the axle direction or the oblique direction, the turning property of the mouthpiece 550 and the running property in the vertically long moving direction V1 are improved.

Further, in order to further improve the turning property and the running property in the vertically long moving direction V1, a sliding member 1210 may be provided around the wheel 1267a. This structure will be described with reference to FIG. The wheel 1267a has a rotating shaft 1211 like a normal wheel, and has a concave portion 1212 to which the sliding member 1210 is attached on a peripheral side surface serving as a contact surface with the floor surface. C-cut surface (chamfered portion) 1213 is formed to improve overcoming. The sliding member 1210 is similar to the sliding member 1100 provided around the mouthpiece 550. The brush 1214 having a short bristle of nylon material is planted on the brush base 1215, and the concave portion 1212 formed in the wheel 1200 is formed. The brush 1214 is fixed to the wheel 1267a by inserting the brush base 1215 into the wheel. In this embodiment, the brush stand 1215 is attached by dividing the ring-shaped thing into two and sandwiching the wheel 1267a. This mounting method is the same as that of the sliding member 1100. Then, the wheel 1267a is press-fitted into a bearing of a wheel storage portion formed at the predetermined position on the bottom surface of the mouthpiece 550 and attached.

Returning to FIG. 9, the embodiment shown in FIG. 9 employs a wheel 1267 having no sliding member 1210 around the wheel, but adopts a wheel 1267 a having a sliding member 1210 around the wheel. In addition, the revolving property of the suction body 550 can be further improved. In particular, by adopting the same configuration as that of the wheel 1267a, the front wheel 1261 that moves the mouthpiece 550 in the longitudinal movement direction V1 in a pair with the haunting wheel 1264 can be moved in the longitudinal movement direction V1. The performance can be significantly improved.

In this embodiment, the wheels 1200 are used to move the vehicle in the vertically long moving direction V1 in addition to the movement in the horizontally long moving direction V2. However, the present invention is not limited to this. For example, a universal wheel may be used, or a protrusion may be formed at a predetermined position of the mouthpiece 550 where the wheel 1200 is arranged, and the slide member 1210 may be provided on the protrusion.

As described above, the bottom surface of the mouthpiece 550 according to this embodiment is provided with the retractable wheel 1264 protruding by the twisting operation P1 of the hand handle 300. In the movement in the form movement direction V1, the mouthpiece 550 can be smoothly moved in the vertically long form movement direction V1 by the hammering wheel 1264 and the front wheel 1261.

On the other hand, in the horizontally long moving direction V2 of the mouthpiece 550, the retractable wheel 1264 is stored in the mouthpiece 550, so that the front wheel 1261 and the rear wheel 1262 are respectively left and right, and the rearmost wheel 1263 is located at the rear center. Are arranged on a five-point wheel. According to the five-point wheel configuration, the traveling performance in the horizontally long traveling direction V2 is excellent, and the suction body can be stably supported in the oblique traveling and turning performance. In particular, since the rearmost wheel 1263 is located closer to the user than the rotation shaft 1503 of the free connecting portion 1530 at the time of use, the rearward wheel 1263 prevents the movement in the horizontally long moving direction V2, particularly the lifting of the tip of the mouthpiece 550 when retreating. Can be reduced. Further, since the rotating shaft 1503 of the free connecting portion 1530 is provided in the above-mentioned five-point wheel, even if the mouthpiece 550 is turned and rotated via the hand handle 300, the inclination of the mouthpiece 550 (lift of the corner) ) Can be reduced. In addition, since each wheel 1200 is disposed at a corner of the mouthpiece 550, it is possible to reduce the possibility of the wheel 1200 being caught during rotation.

Next, a dust guiding means 1300 is provided at the front of the suction port 1010 provided on the bottom surface of the suction body 550, and a pressure control plate 1301 is provided at the rear of the suction port 1010. The guide means 1300 has a function of efficiently sucking in dust which is difficult to suck by the flat portion 1302 formed between the mouthpiece 1010 and the tip of the mouthpiece 550. 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.

The guide means 1300 according to the present embodiment is for efficiently sucking the hard-to-suck dust. In this embodiment, in order to solve the above-described problem, a plurality of brush rows 1311 in which a bundle of brushes 1310 made of nylon or the like with long hairs are arranged so as to form a row in the front-rear direction are arranged on the flat portion 1302 in the left-right direction. Thus, the guide means 1300 is configured. In this embodiment, as shown in FIG. 9, 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 bundle of brushes 1310 may be directly embedded in the flat portion 1302 and implanted. Alternatively, the brush row 1311 may be implanted as a group in a brush table and the brush table may be embedded in the flat portion 1302 and attached. Good.

According to the guide means 1300, the air flow path 1312 is formed between the brush rows 1311, so that the flow of the air flow is accelerated through the flow path 1312, so that the dust is easily sucked. can do. In addition, by moving the mouthpiece 550, the dust on the flat portion 1302 is swept up by the bunch 1310 of the brushes, and can be easily sucked. That is, by moving the suction body 550 on the flat portion 1302, dust can be scraped up by the brush bundle 1310 and guided to the suction port 1010 in the flow path 1312.

In this embodiment, as shown in FIG. 13B, the length of the bristles of the brush bundle 1310 is changed in a state where the mouthpiece 550 is moved in the horizontally long moving direction V2, that is, the front wheel It is set so that the tip of the brush bundle 1310 is in contact with the floor surface in a state where the vehicle runs on the five wheels of 1261, the rear wheel 1262, and the rearmost wheel 1263. In this state, the tip of the brush bundle 1310 appropriately brushes the floor surface, so that the cleaning effect can be improved by the above-described effect.

On the other hand, in a state where the suction body 550 is moved in the vertically long moving direction V1 by the front wheel 1261 and the appearance wheel 1264 as shown in FIG. (C), the appearance wheel 1264 protrudes downward, and the suction body 550 becomes the front wheel. The tip of the brush bundle 1310 is strongly pressed against the floor surface because the tip of the brush bundle 1310 is inclined forward to the side of 1261. For this reason, the dust on the flat portion 1302 is scraped up by the brush bundle 1310 more strongly than the state shown in FIG. Moreover, since the guide means 1300 is strongly pressed against the floor surface, the guide means 1300 also supports the suction body 550 instead of the front wheel 1261. Therefore, the mobility of the suction body 550 in the left-right direction V1 is improved. Can be improved.

The pressure control plate 1301 receives the dust that has rushed backward in the flow channel 1312 and sucks the dust into the suction port 1010 again. In the state of FIG. 13 (c), the pressure control plate 1301 is set to have a length protruding from the bottom surface such that the tip comes into contact with the floor surface, thereby improving the tightness of the lower part of the suction port 100. Can be.

Next, the flexible connecting portion 1530 will be described in detail with reference to FIGS.

First, FIG. 15A is a longitudinal sectional view of the first rotating shaft, FIG. 15B is a transverse sectional view, and FIG. 15C is an external view of the lock ring. The first rotating shaft 1533 of this embodiment includes a rotating shaft portion 1533 a protruding in a tubular shape above one end of the lower arm portion 1531, and a tubular concave rotating bearing beneath one end of the upper arm portion 1532. The portion 1533b is inserted and assembled using the elasticity of the resin material.

Further, in this embodiment, there is provided a lock mechanism 1516 for temporarily turning the rotation in the left-right direction X at a position of 90 degrees into a locked state. For example, in this embodiment, a groove 1543 is formed in the sliding surfaces 1542a and 1542b between the rotary shaft portion 1533a and the rotary bearing portion 1533b, and a lock ring 1534 shown in FIG. I have. The lock ring 1534 is formed with a leaf spring action so that a part of the ring is opened and tends to spread in both directions indicated by arrows. Further, the lock ring 1534 is provided with a mounting portion 1544 at the center of the ring, and projections 1545a are formed at opposing positions on both sides of the ring.

The lock ring 1534 is fixed to the groove 1543 on the side of the rotating shaft 1533 a via the mounting portion 1544 as shown in FIG. Further, the protrusion 1545a is fitted into the groove 1543 on the side of the rotary bearing portion 1533b at a position where the pipe axis of the upper arm 1532 (the center axis of the connection pipe 400) is orthogonal to the longitudinal direction of the mouthpiece 550. A pair of recesses 1545b are formed.

According to this lock mechanism 1516, when the pipe axis of the upper arm 1532 (the center axis of the connection pipe 400) is orthogonal to the longitudinal direction of the mouthpiece 550, the rotation in the left-right direction X is fixed. In addition, the straightness of the suction body 550 is improved, and the movement in the front-back direction is facilitated. On the other hand, when the mouthpiece 550 is to be rotated via the hand handle 300, the engagement between the projection 1545a and the recess 1545b is released, so that the lock mechanism 1516 can be removed with a small force.

In this embodiment, a pair of the protrusion 1545a and the recess 1545b are provided in order to enhance the straightness of the mouthpiece 550. For example, the recess 1545b may be formed at a predetermined angle (45). Degrees, 90 degrees, etc.).

FIG. 16 shows another fitting structure of the first rotating shaft 1533. In this embodiment, grooves 1546a and 1546b are formed on sliding surfaces 1542a and 1542b between the rotating shaft portion 1533a and the rotary bearing portion 1533b, and a fixing ring 1547 shown in FIG. I have. The fixing ring 1547 is formed with a spring action so that a part of the ring is opened and tends to spread in both directions indicated by arrows. Further, the fixing ring 1547 is provided with a mounting protrusion 1548 at an end of the ring, and fixes the mounting protrusion 1547 to the rotating shaft portion 1533a so as not to impair the spring action of the fixing ring 1547.

According to this structure, if the rotary bearing portion 1533b is inserted into the rotary shaft portion 1533a in a state where the fixing ring 1547 is embedded in the groove 1546a of the rotary shaft portion 1533a, assembly is easy. In this state, the fixed ring 1547 extends in the groove 1546b of the rotary bearing portion 1533b, so that the rotary shaft portion 1533a and the rotary bearing portion 1533b can be disengaged without impairing the rotation of the first rotary shaft 1533. Nothing.

FIG. 17 shows another fitting structure of the first rotating shaft 1533. In this embodiment, the rotating shaft portion 1533a and the rotating bearing portion 1533b are detachably attached via a detachable fixing piece 1549.

In this embodiment, two ring-shaped projections 1550 are provided on the sliding surface 1542a of the rotating shaft 1533a, and a ring-shaped recess 1551 is formed around the rotating shaft 1533. On the other hand, an opening window 1552 is formed in the rotary bearing portion 1533b at a position corresponding to the concave portion 1551. Two opening windows 1552 are provided at opposing positions in consideration of the rotation of the first rotation shaft 1533.

Then, a fixing piece 1549 is disposed so as to straddle the opening window 1552 and the recess 1551. The fixing piece 1549 is detachably formed from the opening window 1552 by utilizing the elastic action of the resin material. For example, in this embodiment, the fixing piece 1549 is composed of an arc-shaped portion 1549a conforming to the shape of the concave portion 1551, and a main body portion 1549b whose outer shape is conformed to the opening window 1552 and whose inside is robbed. . When the fixing piece 1549 is mounted, the jig is inserted into the hole provided in the main body 1549b by inserting it into the opening 1552 through the arc-shaped portion 1549a. Pull it out using the elasticity of it. The size of the fixing piece 1549 and the size of the concave portion 1551 are set so that the first rotation shaft 1533 does not rattle and the rotation can be smoothly performed.

Further, in this embodiment, a lock mechanism 1516 including the protrusion 1545a and the recess 1545b is provided on the contact surface between the fixing piece 1549 and the recess 1551. For example, in this embodiment, a protrusion 1545a is provided at the tip of the main body 1549b, and a recess 1545b is provided at a predetermined position of the recess 1551, thereby utilizing the elastic force of the resin material of the fixing piece 1549. The locking and unlocking of the projection 1545a and the recess 1545b can be performed smoothly.

According to this structure, the assemblability of the first rotary shaft 1533 is improved, and the disassembly is facilitated by removing the fixing piece 1549, so that the maintenance and cleaning properties can be improved. In addition, the first rotating shaft 1533 can be locked at a predetermined position with a simple structure.

In the above embodiment, the fixed piece 1549 having the lock mechanism 1516 is employed, but the lock mechanism 1516 and the fixed piece 1549 may be separated.

Next, the lock mechanism 1553 for the second rotating shaft will be described with reference to FIG. 18, (a) is an external view of the lower arm 1531, and (b) and (c) are cross-sectional views of main parts of the mouthpiece 550 in a state where the handle 300 is stood upright.

In this embodiment, in a state where the mouthpiece 550, the connection pipe 400, and the hand handle 300 are connected, the upright storage such that the hand handle 300 is located above the mouthpiece 550 is enabled. In this embodiment, a lock mechanism 1553 is provided on the second rotation shaft 1535 in order to maintain this storage posture. The lock mechanism 1553 includes a protrusion 1554 provided on a sliding surface 1539 of the second rotating shaft 1355 and a concave portion 1038 provided on a sliding surface of the bearing 1018 of the lower case 1001. The protrusion 1554 forms a U-shaped cut in a part of the sliding surface 1539, and is provided at a free end thereof so that the protrusion 1554 rotates the second rotation shaft 1535 by a spring action. The operation is not hindered. Then, the lock mechanism 1553 sets the arrangement of the protrusion 1554 and the recess 1038 so that the lower arm 1531 locks when the angle in the height direction Y is 90 degrees.

With this structure, as shown in FIG. 10B, in the upright storage position in which the hand handle 300 is located above the mouthpiece 550, the lock mechanism 1553 of the second rotating shaft 1535 and the first Since the lock mechanism 1516 of the rotating shaft 1533 is in the locked state, the upright storage posture can be maintained. In addition, when the locking mechanism 1553 of the second rotating shaft 1535 is in the locked state, the retractable wheel 1564 protrudes and the suction body 550 assumes a forward turning posture, so that the suction hose attached to the hand handle 300 is provided. Since it can be balanced with the weight of 200, a stable posture can be maintained.

Further, even when the mouthpiece 550 is moved in the vertically long moving direction V1, the second rotating shaft 1535 is in the locked state, so that it is easy to maintain the angle of the twisting operation P1 of the hand handle 300 during this traveling. . Note that, similarly to the lock mechanism 1516 of the first rotating shaft 1533, the lock mechanism 1553 may be in a locked state at an angle that is frequently used.

In another application example, the locking may be performed in a state where the angle of the lower arm 1531 in the height direction Y is 90 degrees or more. In this case, a convex rib (not shown) is provided before the concave portion 1038 and the projection portion 1554 are fitted to each other so that a sense of resistance is given to the stage before the locked state. For this reason, when the angle of the twisting operation P1 of the hand handle 300 is set to 90 degrees, the rotation angle P2 of the suction body 550 is set to 90 degrees, and the suction body 550 is moved in the vertically long moving direction V1, the locking mechanism 1553 is used. Does not lock. On the other hand, when the angle of the twisting operation P1 is set to 90 degrees or more, or the angle of the lower arm 1531 in the height direction Y is set to 90 degrees or more, and the operation is performed until the resistance exceeds the resistance, the locked state is established. To In this way, when the mouthpiece 550 is moved in the vertically long moving direction V1, the second rotating shaft 1535 is not locked, and a more stable posture can be maintained in the vertical storage posture. . Further, in the storage posture, since it is not necessary to consider the operation of the suction body 550 in the vertically long moving direction V1, the locked state can be set strongly, so that a more stable posture can be obtained. In this case, the unlocking may be released by stepping on the suction body 550 with a foot or the like.

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

In FIG. 19, first, in the vacuum cleaner 1 according to the present embodiment, the user operates the suction body 550 through the connection pipe 400 by holding the hand handle 300 in a standing posture, and thereby the floor is operated. The surface can be cleaned. At this time, since the vacuum cleaner main body 100 connected to the hand handle 300 via the suction hose 200 is provided with a pair of large wheels 101 and one free wheel 102, cleaning is performed while moving. Can be. In general, the average height of a Japanese woman is 157 cm. However, if the user holds the handle 300 by himself and tries to clean the mouthpiece 550 forward and backward through the connection pipe 400, the user is supposed to do so. If the vertical distance between the hand handle 300 and the floor is 78 cm or less, cleaning can be performed without placing a burden on hands and arms. The angle is desirably set to the range of the most operable operation of the user, which is 45 degrees in the vertical direction. If the angle is more than 45 degrees, the hand or arm will be burdened conversely.

Therefore, in the present embodiment, the length of the connection pipe 400 can be set so that the angle of the connection pipe 400 becomes 45 degrees. Since the handle portion 301 of the handle 300 is set at about 110 degrees, the user holding the handle portion 301 can easily move in the front-rear direction when the angle of the connection pipe 400 is 45 degrees. be able to. In addition, since the lower arm 1531 of the freely connecting portion 1530 rotates in the height direction Y, the bottom surface of the mouthpiece 550 provided with the mouthpiece 1010 is rotated even if the mouthpiece 550 moves in the horizontal movement direction V2. The bottom of the body 550 does not rise from the floor. At this time, the rotation in the left-right direction X is caused by the rotation of the upper arm 1532 due to the friction of the rotation shaft because the rotation axis in the left-right direction X of the upper arm 1532 is tilted 45 degrees because the connecting pipe 400 is tilted at 45 degrees. Rotation of the mouthpiece 550 in the left-right direction X can be reduced even if the mouthpiece 550 is moved in the horizontally long moving direction V2. Further, in this embodiment, since the lock mechanism 1516 is provided on the first rotating shaft 1533, the straightness of the mouthpiece 550 can be further improved.

In addition, when the mouthpiece 550 moves in the horizontally long shape movement direction V2, the front wheel 1261, the rear wheel 1262, and the rearmost wheel 1263 are supported by the front wheel 1261, the rear wheel 1262, and the rearmost wheel 1263 among the wheels 1200 provided on the bottom surface. Performs rotation about an axis parallel to the longitudinal direction of the mouthpiece 550, so that straightness can be improved. In particular, in this embodiment, the rearmost wheel 1263 reduces the floating of the distal end portion of the mouthpiece 550 in the laterally long moving direction V2, so that good straightness can be obtained. Further, in this embodiment, the brush 1214 of the guide means 1300 and the double brush of the rotating brush 1011 can double-screw the dust on the floor surface to increase the suction efficiency.

In this embodiment, the connection pipe 400 in the normal posture is rotated at 45 degrees by rotating the lower arm 1531 in the height direction Y and rotating the upper arm 1532 in the left and right direction X. Although the straightness in the state is enhanced, the lower arm 1531 may rotate in the left-right direction X and the upper arm 1532 may rotate in the vertical direction Y. In the reversing structure, the rotation operation of the mouthpiece 550 described later can be performed in the same manner as in the above-described embodiment, but since there is a problem in the straightness, the lock mechanism 1516 for preventing the rotation in the left-right direction X is provided. There is a need.

In FIG. 20, in this embodiment, the direction (rotation P2) of the mouthpiece 550 can be changed by linking to the rotation of the handle 300 by an operation P1 of twisting the handle portion 301 of the handle 300 at hand. 20, (a) is a state where the handle part 301 is straightened, (b) is a state where the handle part 301 is twisted 45 degrees, and (c) is a hand handle where the handle part is twisted 90 degrees. It is a state diagram of 300 and the suction body 550. In FIG. 20, 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 mouthpiece 550 are linked at any angle in the operation range.

First, in FIG. 11A, the twist angle of the handle portion 301 is 0 degrees, and the extension line of the connection pipe 400 is suitable for normal cleaning in the horizontally long moving direction V2 perpendicular to the longitudinal direction of the mouthpiece 550. It shows the situation.

On the other hand, as shown in FIG. 13B, when the handle portion 301 is twisted by 45 degrees, the direction of the mouthpiece 550 can be inclined by 45 degrees by the action of the free connecting portion 1530. In this state, the wheel 1200 of the suction body 550 slides laterally, so that it is possible to perform a forward and backward movement while the suction body 550 is tilted. For example, it is very effective when cleaning narrow parts with obstacles in front. In addition, since the direction of the wheel 1200 is changed by changing the direction of the mouthpiece 550, the course of the mouthpiece 550 can be easily changed as if turning a steering wheel of an automobile.

Further, as shown in FIG. 13C, when the handle portion 301 is twisted by 90 degrees, the direction of the mouthpiece 550 can be rotated by 90 degrees by the action of the universal connection portion 1530. In this state, the retractable wheel 1264 of the suction body 550 protrudes from the bottom surface by the action of the free connecting portion 1530. Since the mouthpiece 550 is supported by the retractable wheel 1264 and the front wheel 1261, the mouthpiece 550 can be moved in the vertically long moving direction V <b> 1 with the mouthpiece 550 rotated by 90 degrees. In this position, it is very effective for cleaning the wall. This cleaning near the wall will be described with reference to FIG.

In FIG. 21, (a) shows a state in which the wall is cleaned by rotating the mouthpiece 550 exactly 90 degrees, and (b) shows a margin between the wall and the handle portion 301 about the width of the shoulder. A state in which the suction body 550 cleans the wall by rotating the suction body 550 close to 90 degrees is shown. Further, FIG. 7C is a diagram showing that the narrow gap cleaning becomes more optimal by setting the rotation range in the left-right direction X to be wider than the 180-degree operation range. For example, by setting such a wide operating range, it is possible to reduce contact of the connection pipe 400 and the suction hose 200 facing sideways with a wall or the like when the handle portion 301 is twisted. Furthermore, in the mouthpiece 550 according to the present embodiment, in the use state of FIG. 21, the universal connecting portion 1530 sets the angle of the second rotating shaft 1535 in the height direction Y to 90 degrees, so that the universal connecting portion 1530 Since it fits within the projected area of the suction port main body 1000, it is very advantageous for cleaning a gap with a small width HH in FIG. Moreover, in this use state, the upper arm 1532 is located above the center of the mouthpiece 550, so that "left and right blurring" of the mouthpiece can be reduced and the traveling performance can be improved.

Now, in the state shown in FIG. 21, the suction body 550 can be moved in the vertically long movement direction V1 with the longitudinal side of the suction body 550 being in contact with the wall surface. In this state, the wall can be moved without damaging the wall surface by the sliding member 1100 provided around the mouthpiece 550, and the guide means 1300 provided on the bottom portion allows the gap between the suction port 1010 and the wall surface to be formed. Dust can be sucked in efficiently. Further, in the guide means 1300, the suction body 550 is tilted by the protrusion of the retractable wheel 1264 and strongly pressed against the floor surface, so that the cleaning efficiency can be improved.

Next, in FIG. 22, in the mouthpiece 550 according to this embodiment, even if the hand handle 300 is lowered without twisting, the extension of the central axis of the connection pipe 400 is aligned with the longitudinal direction of the mouthpiece 550. Since the entire bottom surface of the suction body 550 can be brought into close contact with the floor surface in the orthogonal state (by movement in the horizontally long moving direction V2), the cleaning ability of a low part such as a lower part of furniture is excellent. 22, (a) and (b) are a side view and a plan view of the use state of the conventional example, and (c) and (d) are a side view and a plan view of the use state of the present embodiment.

As is clear from the comparison between the diagrams (a) and (c), according to the present embodiment, the lower handle 300 can be lowered to penetrate the lower gap. Since a bent joint is used, if the hand handle 300 is lowered, the bottom surface of the mouthpiece 550 floats. In the conventional example, as shown in FIG. 2B, the joint H bent by the operation of twisting the hand handle 300 can be laid sideways to lower the overall height H, but since the mouthpiece 550 faces obliquely, there is a clearance. There remains a problem with the cleanability behind the house. On the other hand, in the present embodiment, as shown in FIG. 9D, the side in the longitudinal direction of the mouthpiece 550 can be directly opposed to and tightly attached to the inner wall surface of the gap without performing the twisting operation. In addition, the lock mechanism 1516 can maintain a state in which the extension of the central axis of the connection pipe 400 is orthogonal to the longitudinal direction of the mouthpiece 550.

Next, in FIG. 23 and FIG. 24, the mouthpiece 550 of this embodiment is stored in a compact form by rotating the two rotation shafts of the free connection portion 1530 singly or both. The size and packing size can be reduced. FIG. 23 illustrates a state in which the angle of the second rotation shaft 1535 in the height direction Y is 0 degree, and the rotation angle of the first rotation shaft 1533 in the left and right direction X is 180 degrees. According to this posture, the upper arm portion 1532 is arranged at the center in the longitudinal direction of the suction main body 100 like a “chomage”. FIG. 24 shows a state where the angle of the second rotation shaft 1535 in the height direction Y is 90 degrees and the rotation angle of the first rotation shaft 1533 in the left-right direction X is 90 degrees. According to this posture, the upper arm 1532 is arranged on one side from the center in the longitudinal direction of the mouthpiece main body 100. In addition, in the posture shown in FIG. 24, the free connecting portion 1530 fits within the projected area of the mouthpiece body 1000, so that the installation area can be made smaller than the posture shown in FIG.

As described above, in the present embodiment, the two positions can be appropriately selected and stored or packed at the time of storage or packing, so that the storage / packing space can be reduced. Further, by setting the lock mechanism to be in the locked state in the above posture, the storage posture can be stabilized.

Next, an operation principle of the mouthpiece 550 according to the present embodiment will be described with reference to FIG. The vacuum cleaner 1 according to this embodiment can transmit the rotation P1 of the twisting operation of the hand handle 300 to the rotation P2 of the mouthpiece body 1000 as it is, but the operation principle can be described as follows, for example. it can.

(A) is a side view of the mouthpiece 550 conceptually showing a state A1 in which the angle of the elevation direction Y is 45 degrees and a state A2 in which the angle is 90 degrees. FIG. FIG. 13 is a side view of a state A3 in which the angle is reduced to about 30 degrees from the angle of the elevation direction Y.

(B) is a plan view of the state A1 in which the angle of the elevation direction Y is 45 degrees, and a plan view of the mouthpiece 550 in the state A0 in which the angle of the twisting operation P1 is 90 degrees from this state A1. C) shows a front view of the mouthpiece 550 in the state A0 in which the angle of the twisting operation P1 is 90 degrees.

(A) In this embodiment, in this embodiment, the rotation surface (first rotation shaft) of the first rotation shaft 1533 disposed between the tube axis B1 of the parallel lower arm 1531 and the tube axis B2 of the upper arm 1532 is parallel. 1 of the rotation connecting portion 1533) is arranged in parallel with the tube axes B1, B2. According to the experimental verification of this embodiment, the rotation P1 of the twisting operation of the hand handle 300 (rotating the tube axis B2) is performed at the intersection G1 where the extension line F2 passing through the rotation surface F1 intersects the floor surface. The rotation is converted into the rotation P2 of the mouthpiece 550 at the center. Therefore, in the state A2 in which the angle of the elevation direction Y is 90 degrees, the intersection G2 where the extension line F2 passing through the rotation surface F1 intersects the floor is located directly below the handle 300, and the twisting operation P1 of the handle 300 is performed. Can be easily rotated. On the other hand, as shown in FIG. In the state A3 in which the angle in the height direction Y is small, the intersection G3 is far away, so that the rotation P2 of the mouthpiece 550 cannot be obtained unless the twist rotation P1 is applied with a large force. Moreover, as is apparent from the figure, if the angle in the elevation direction Y is too small, the extension line F2 passing through the rotation surface F1 does not intersect with the floor surface, so that the rotation P2 of the suction body 550 cannot be obtained.

In elucidating the operation principle of this embodiment, the first state A1 of the rotation operation and the last state A0 by rotating and moving the handle 300 side with the suction body 550 fixed. Is compared. First, as shown in FIGS. 7A and 7B, in the first state A1, an intersection G1 at which the extension line F2 passing through the rotation surface F1 intersects with the floor surface is set substantially at the center of the mouthpiece 550. However, as shown in (b) and (c), when the hand handle 300 is moved to the final state A0 by applying the twisting operation P1, the intersection G0 at which the extension line F2 passing through the rotation surface F1 intersects the floor surface becomes The suction body 550 is set on one side in the longitudinal direction. That is, in the normal operation state, the hand handle 300 is operated at a predetermined position by the user, so that the rotation P2 of the mouthpiece 550 rotates while moving the intersection G1 which is the center of the rotation P2 to G0. . More specifically, when the twisting action P1 is applied to the hand handle 300 in the direction of arrow E1, the suction body 1000, which originally intended to rotate according to the twisting action P1, prevents the rotation by the floor surface. Therefore, the first rotation shaft 1533 operates so as to rotate while tilting the rotation surface F1 and escape in the direction of the arrow E2. On the other hand, the second rotating shaft 1535 operates to receive the twisting operation P1 on the entire bottom surface of the mouthpiece 550, and follows and interlocks with the first rotating shaft 1533 that rotates while tilting the rotating surface F1. Then, it operates to gradually rotate, that is, to increase the angle in the height direction Y. As a result, the mouthpiece 550 rotates in the direction of the arrow E3 while changing the center position of the rotation P2 from G1 to G0.

(Second Embodiment) FIGS. 26 to 28 show another embodiment of the vacuum cleaner according to the present invention. FIG. 26 is a cross-sectional view of the mouthpiece, FIG. 27 is a use state diagram, and FIG. 28 is an operation principle diagram of the mouthpiece. In the description, the same or similar components as those of the above-described embodiment are denoted by the same reference numerals, and redundant description will be omitted.

The mouthpiece 560 according to this embodiment is different from the mouthpiece 550 according to the first embodiment in that the rotation surface F1 of the first rotating shaft 1533 is inclined, and other structures are substantially the same. It is. According to the mouthpiece 560, the rotation angle of the rotation P2 of the mouthpiece 560 can be larger than the rotation angle of the twisting operation P1 of the hand handle 300.

In FIG. 26, the mouthpiece 560 has a rotation surface F1 of the first rotation shaft 1533 disposed between the tube axis B1 of the parallel lower arm 1531 and the tube axis B2 of the upper arm 1532, The rotation surface F1 is formed to have an angle of inclination Θ0 so that the tip side of the portion 1532 is high and the back is low. According to this embodiment, since the first rotating shaft 1533 is the inclined rotating surface F1, the center of rotation of the first rotating shaft 1533 is oblique, so that the transport path of the upper arm 1532 and the lower arm Since the transport path of the 1531 can be continued in an oblique transport path, the entire transport path of the flexible connecting portion 1530 can be gently continued without significantly bending, thereby reducing dust clogging and noise. can do. In addition, as described above, the rotation P2 of the mouthpiece 560 can be increased by the rotation of the small twisting operation P1.

That is, as shown in FIG. 27A, in this embodiment, the twist angle of the handle portion 301 is 0 degree, and the extension of the center line of the connecting pipe is orthogonal to the longitudinal direction of the mouthpiece 560. From the state suitable for normal cleaning in the horizontally long moving mode V2, the rotation P2 of the mouthpiece 560 is reduced to 90 degrees without rotating the twisting operation P1 of the hand handle 300 by 90 degrees as shown in FIG. can do. Therefore, the mouthpiece 560 can be largely moved by a small movement of the handle at hand. This operating principle will be described with reference to FIG.

28A is a side view of the mouthpiece 560 conceptually showing a state A1 in which the angle of the elevation direction Y is 45 degrees and a state A2 in which the angle is 90 degrees, and FIG. Shows a plan view of the state A1 in which the angle of the elevation direction Y is 45 degrees, and a plan view of the mouthpiece 560 in the state A0 in which the angle of the twisting operation P1 is 90 degrees from the state A1, and FIG. Is a front view of the mouthpiece 560 in a state A0 in which the angle is 90 degrees, and (d) is a partially enlarged view of (b).

[0130] In Fig. (A), according to the experimental verification, the mouthpiece 560 of this embodiment is similar to the mouthpiece 550 of the first embodiment, and according to experimental verification, the rotation P1 of the twisting motion of the hand handle 300 (the aforementioned (Rotation of the pipe axis B2) is converted into rotation P2 of the mouthpiece 560 about the intersection G1 where the extension line F2 passing through the rotation surface F1 intersects the floor surface. However, the difference from the first embodiment is that the intersection G1 where the extension line F2 passing through the rotation surface F1 intersects the floor surface is farther than in the first embodiment because the rotation surface F1 is inclined. . Therefore, in the state A2 in which the angle in the elevation direction Y is 90 degrees, the intersection G2 where the extension line F2 passing through the rotation surface F1 intersects the floor is located forward of immediately below the hand handle 300. Unless F1 is made to have a very large inclination, the rotation of the twisting operation P1 of the handle 300 at hand can be easily performed. Depending on the angle Θ0, the intersection G2 can be arranged directly below the tube axis B2.

On the other hand, when the angle in the elevation direction Y is small, the angle at which the extension line F2 passing through the rotation surface F1 does not intersect with the floor surface is larger than in the first embodiment. It is suitable for places where the frequency of work in a posture with a large angle is high.

In this embodiment, as in the first embodiment, the suction body 560 is fixed and the hand handle 300 is rotated and moved, so that the first state A1 of the rotation operation and the final state A0 are performed. Is compared. First, as shown in (a) and (b), in the first state A1, an intersection G1 where an extension line F2 passing through the rotation surface F1 intersects with the floor surface is set at the front of the mouthpiece 560. . However, as shown in (b) and (c), when the hand handle 300 is moved to the final state A0 by applying the twisting operation P1, the extension line F2 passing through the rotation surface F1 intersects with the floor G0. Is set on one side in the longitudinal direction of the mouthpiece 550. That is, the basic operation principle of this embodiment is the same as that of the first embodiment. However, a major feature of the mouthpiece 560 is that, in the final state A0, the angle of the hand handle 300 in the left-right direction X is 90 degrees or more, as is apparent from FIG. In the normal operation state, the hand handle 300 is operated at a predetermined position by the user, and the rotation P2 of the mouthpiece 560 may be in the state shown by the dotted line. If the twisting operation P1 is rotated by 90 degrees, the mouthpiece 560 will rotate too much. That is, the rotation P2 of the mouthpiece 560 can be set to 90 degrees without rotating the twisting operation P1 by 90 degrees.

The point that the twisting operation P1 is enlarged to the rotation P2 is caused by the fact that the rotation surface F1 of the first rotation shaft 1533 is inclined by an angle Θ1 as shown in FIG. As is clear from the comparison between the diagrams (a) and (b), the angle Θ1 is 0 degree in the state A2 with the handle 300 upright, but the angle Θ1 increases in the state A0. Is a point. That is, in the twisting operation P1, performing the twisting operation P1 at a lower position than the twisting operation P1 of the hand handle 300 at a higher position allows the suction body 560 to operate more greatly with a smaller twisting operation P1. The same effect as described above can be obtained by increasing the angle of the rotation surface F1.

Third Embodiment FIGS. 29 to 45 show another embodiment of the vacuum cleaner according to the present invention.

First, the outline of this embodiment will be described with reference to FIG. 29 showing an external perspective view of a vacuum cleaner. In the description, the same or similar components as those of the above-described embodiment are denoted by the same reference numerals, and duplicate description will be omitted.

In FIG. 29, a vacuum cleaner generally indicated by reference numeral 1 is a vacuum cleaner main body 100 having a blower (not shown) for sucking dust, and one end of the vacuum cleaner main body 100. A flexible suction hose 200 attached to communicate with the blower, a hand handle 300 attached to the other end of the suction hose 200 and connected to the blower, and a suction hose attached to the hand handle 300 It comprises a connecting pipe 400 communicating with 200 and a mouthpiece 500 attached to the connecting pipe 400 and communicating with the connecting pipe 400. Each part other than the mouthpiece 500 is common to the description of FIG.

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. Is provided with a handle portion 301 at a position substantially coincident with the connection direction between the suction hose 200 and the connection pipe 400. 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 can be easily performed.

The mouthpiece body 500 is provided with a mouthpiece body 1000 having a suction port 1010 (see FIG. 30) for sucking dust on the bottom surface, and the mouthpiece body 1000 is connected to the connection pipe 400. And a free connection portion 1500 that operates so that the bottom surface of the suction main body 1000 always contacts the floor surface in response to the movement of the hand handle 300 transmitted through the interface.

The suction main body 1000 has a suction surface 1010 (see FIG. 30) provided with a rotating brush 1011 (see FIG. 30) for sucking dust on the floor surface on the bottom surface. The universal connection part 1500 is provided so as to cover the connection hose 1501 and a flexible connection hose 1501 that communicates the suction main body 1000 and the connection pipe 400, and connects the suction main body 1000 and the connection pipe 400 to each other. And a hinge 1502 rotatably connected.

The universal hinge 1502 is rotatably connected to the height direction Y of the hand handle 300 and the left-right direction X around the mouthpiece 500 and rotates the rotation P 1 of the twisting operation of the hand handle 300. A mechanism for transmitting the rotation to the rotation P2 of the mouthpiece main body 1000 is provided. In this embodiment, a universal hinge 1502 is rotatably attached to the mouthpiece main body 1000 and is rotatable in the vertical direction Y, and one end is attached to the connection pipe 400 and the other end is the other end. It comprises a lower arm 1502a and an upper arm 1502b attached so as to enable rotation in the left and right direction X.

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

Further, the mouthpiece 500 is provided with a sliding member 1100 around the mouthpiece body 1000 instead of the conventional bumper, thereby improving the cleanability of the wall and smoothly moving the mouthpiece 1000 on the bottom surface. Wheels 1200 are provided. Further, by providing the dust guide means 1300 (see FIG. 36) at the front (between the tip end) of the suction port 1010 provided on the bottom surface of the suction main body 1000, it is possible to efficiently suck the dust near the wall which is difficult to remove. it can.

As described above, a significant feature of the present 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 is directly used as the rotation P2 of the mouthpiece 500. For example, the operation performed by the user with the handle 300 at hand can be smoothly performed as the movement of the suction body 500. Specifically, for example, by twisting the handle 300 by 90 degrees (rotation P1), the mouthpiece 500 is rotated 90 degrees as shown by the dotted line in FIG. The floor surface can be cleaned near the wall while moving back and forth in the direction V1. At this time, the suction member 500 can be smoothly moved by the sliding member 1100 and the wheel 1200, and the damage to the wall surface can be reduced. Further, the dust on the hard-to-remove wall can be removed by the guide means 1300. It can inhale efficiently.

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 addition, each part other than the free connection part 1500 of the mouthpiece 500 is common to the description of FIG.

In the figure, as described above, the mouthpiece 500 is constituted by the mouthpiece main body 1000 and the free connection portion 1500.

The mouthpiece main body 1000 is composed of a lower case 1001 forming the framework of the mouthpiece main body 1000, a front upper cover 1002 covering the front of the mouthpiece main body 1000, and a rear upper cover 1003 covering the rear side of the mouthpiece main body 1000. Be composed.

The lower case 1001 is provided with a partition wall 1004 which divides the inlet main body 1000 back and forth at a slightly rearward position, 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, Both sides of the mounting portion 1006 are provided as ventilation passages 1007 for driving a turbine 1012 described later. A notch 1008 is formed in the center of the partition wall 1004, and a bell mouth body 109 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.

The rear upper cover 1003 covers the upper part of the attachment portion 1006 of the universal connection portion 1500 and fixes the bell mouth body 1009 and the universal connection portion 1500 to the lower case 1001, and is not shown. It can be attached with screws.

The front upper cover 1002 covers the upper portions of the suction chamber 1005 and the ventilation path 1007, and forms the suction chamber 1005 and the ventilation path 1007 together with the lower case 1001. Ribs (not shown) provided on both sides of the unit are hooked on the lower case 1001 so as to be detachably attached by opening / closing levers 1022 (see FIG. 35) provided on both rear sides.

A suction port 1010 is formed in the lower case 1001 below the suction chamber 1005. In the suction chamber 1005 above the suction port 1010, a rotary brush 1011 for scraping dust or the like is provided. Turbine 1012 is attached to both ends of rotating brush 1011.

Referring back to FIG. 30, a viewing window 1017 is provided at the front center of the front upper cover 1002 located above the rotating brush 1011. For this reason, since the operation state of the rotating brush 1011 can be visually checked through the viewing window 1017, it is possible to know the trouble such as the stop of the rotating brush 1011 and the state of the internal dirt.

On the other hand, the free connection portion 1500 includes a lower arm portion 1502a, an upper arm portion 1502b, and a connection hose 1501. Then, as shown in FIG. 31, the free connecting portion 1500 includes a first rotating shaft 1533 connected by the lower arm portion 1502a and the upper arm portion 1502b, and a second rotating shaft 1533 connected by the lower arm portion 1502a and the suction body 100. And two rotation axes 1535.

Returning to FIG. 30, the cylindrical lower arm 1502a has a rotating shaft 1503 formed on one end on both sides, and the rotating shaft 1503 has a bearing 1018 formed on the mounting portion 1006 of the lower case 1001, and a rear portion. A second rotating shaft 1535 is configured so as to be rotatable up and down (up and down in the drawing) by being sandwiched by bearings 1019 formed on the upper cover 1003.

The other end of the lower arm 1502a is provided with a rotation shaft hole 1504 at the top and bottom at a position crossing the rotation shaft 1503 by 90 degrees. On the other hand, a rotating shaft hole 1505 attached to the rotating shaft hole 1504 is formed at one end of the cylindrical upper arm portion 1502b. 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 by aligning the rotation shaft hole 1504 with the rotation shaft hole 1505. Thus, the first rotation shaft 1533 is configured.

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 connects the rear end portion 1009a of the bell mouth body 109 to the connection portion 1507 of the upper arm portion 1502b, and is attached inside the lower arm portion 1502a and the upper arm portion 1502b.

As described above, according to the universal connecting portion 1500 according to the present embodiment, since the connecting hose 1501 is disposed inside the lower arm portion 1502a and the upper arm portion 1502b, the play of the connecting hose 1501 is reduced. And the connecting hose 1501 can be protected from the outside.

Further, the periphery of the upper part of the lower case 1001, in particular, the long side opposite to the mounting part 1006 to which the flexible connecting part 1500 to be the front part of the mouthpiece 500 is mounted, protrudes outward from the other peripheral side. By forming the thick portion 1020, the overall rigidity is increased, and a slip member 1100 in which the thick portion 1020 is planted with nylon or the like is provided by insert molding.

As described above, the suction body 500 according to the present embodiment rotates the rotary brush 1011 using the turbine 1012 that rotates by the suction airflow of the blower provided in the electric vacuum cleaner main body 100 as a driving source. Weight can be reduced. Moreover, since the mounting portion 1006 of the free connection portion 1500 is disposed at the rear center of the suction chamber 1005 and the ventilation passages 1007 are arranged on both sides of the mounting portion 1006, the overall height can be reduced and a compact form can be achieved. . In addition, since the attachment of the flexible connecting portion 1500 requiring rigidity and airtightness 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 cleanability can be improved. In addition, assembling can be completed simply by simply attaching the rotating brush 1011 and attaching the front upper cover 1002, so that handling can be improved.

Next, the appearance of the mouthpiece 500 will be described in detail with reference to FIGS. 33 is an external perspective view, FIG. 34 is an external side view, FIG. 35 is an external rear view, FIG. 36 is a bottom view, and FIG. 37 is a cross-sectional view of a main part of a sliding member.

First, in FIG. 33, the mouthpiece 500 of the present embodiment has a thin appearance, a front portion of the mouthpiece body 1000 protrudes to both sides, and a mounting portion of the free connecting portion 1500 arranged at the center of the rear portion. 1006 has a “substantially T-shaped” planar shape that projects rearward. By making the entire upper surface into a shape that is mainly a round shape, the cleanability is improved, and by making each corner portion a round shape, consideration is given not to damage furniture and the like.

Further, as shown in FIG. 34 and FIG. 32, the suction chamber is secured while ensuring the rotation range of the rotating brush 1011 by making the side surface shape of the tip end of the suction main body 1000 into a substantially wedge-shaped upper surface having a convex arc shape. 1005 has a shape that allows the airflow to be easily introduced into the bell mouth body 1009, and has a compact form as a whole.

Returning to FIG. 33, in the present embodiment, the thick portion 1020 is formed in a longitudinal direction including a portion where the mouthpiece 500 easily hits the furniture or the like, that is, four corner portions protruding on both sides of the mouthpiece main body 1000. 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. The sliding member 1100 is provided continuously to the thick portion 1020. As shown in FIG. 37, the sliding member 1100 is obtained by implanting a brush 1101 having a short bristle of nylon material into a brush base 1102 and inserting the brush base 1020 into a groove 1021 formed in the thick part 1020. The brush 1101 is fixed to the thick portion 1020. Here, the brush base 1102 can be attached to the groove 1021 to reduce the number of parts, but may be divided and mounted to facilitate molding. Further, the brush stand 1102 may be formed integrally with the thick portion 1020 to improve the assemblability. However, the cost of the equipment can be reduced by bonding or press fitting using the elasticity of a resin material. Is also good.

Furthermore, the purpose of employing the sliding member 1100 is to make it easy to move the front part of the suction body 500 in the left-right direction V1 (see FIG. 29) along the wall surface or the like. Therefore, the sliding member 1100 only needs to improve the sliding.

[0165] In a more favorable one, the mobility can be improved by providing the four corners protruding on both sides of the mouthpiece main body 1000 and the center of the front part. The arrangement of the sliding member 1100 may be the same as that of the embodiment shown in FIG. For example, in the embodiment shown in FIG. 33, the brush 1101 is employed as the sliding member 1100. However, a velvet or a fiber material may be attached thereto to reduce the manufacturing cost. By adopting a thicker sliding material 1100, an effect as a bumper function can be expected. Further, the structure may be similar to that of the first embodiment.

Next, referring to FIG. 33, in this embodiment, the size of the suction body 500 is set to a depth D of 304 mm, the depth D1 of the suction main body, and the root portions protruding on both sides in a state where the free connection portion 1500 is extended. Are set to 152 mm, 97 mm, and 83 mm, respectively. In this embodiment, since the length D4 of the connecting portion 1507 is set to 50 mm, the depth when the connecting portion 1507 is attached to the connection pipe 400 is set to 254 mm. Further, as shown in FIGS. 34 and 36, the height H of the mouth body 1000 is set to 63.5 mm, the width W is set to 280 mm, and the width W1 of the suction port 1010 is set to 226 mm.

Next, referring to FIGS. 34 and 35, the mouthpiece 500 according to this embodiment has a flat upper surface with a rounded upper surface, so that dirt on the upper surface can be easily wiped off, and a front portion constituting the upper surface. The form is good for cleaning, for example, the upper cover 1002 can be easily removed.

In order to realize this effect, the mouthpiece 500 according to the present embodiment covers the upper 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 open / close levers 1022 and ventilation holes 1016 that slide in the lateral direction of the front upper cover 1002 provided on the cover 1002 are provided on both sides of the back wall of the front upper cover 1002, and the front upper cover 1002 is removed. Recesses 1023 are provided on both sides of the front upper cover 1002.

The ventilation hole 1016 is composed of a plurality of slit portions 1016a divided along the longitudinal direction of the mouthpiece 500. The slit portions 1016a are formed in a concave shape so as to be one step lower from the surroundings. A punched opening is integrally formed with the front upper cover 1002. 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 hard to receive an impact, and the structure is hardly damaged by an external force even if the furniture or the like comes into contact during cleaning. I have. In addition, since the hand-holding recess 1023 is provided on the side surface of the mouthpiece 500 (front upper cover 1002), the index finger or the middle finger is inserted into the hand-holding recess 1023, the thumb is hooked on the opening / closing lever 1022, and the opening / closing lever The front upper cover 1002 can be easily removed from the mouthpiece 500 by sliding the -1022 outward to release the engagement and picking it with the thumb and the index finger (middle finger).

Further, since the opening / closing lever 1022, the ventilation hole 1016, and the hand-holding concave portion 1023, on which dirt easily accumulates, are provided on a vertical surface, dirt does not easily accumulate. In addition, since the front upper cover 1002 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. It can be easily wiped off.

In FIG. 36, in the lower case 1001, the entire suction body 500 is moved in the horizontal configuration movement direction V2 and the vertical configuration movement direction V1, and a fixed distance is provided between the bottom surface of the suction body 500 and the cleaning surface. Are arranged so as to maintain the vehicle speed. The wheel 1200 includes a pair of front wheels 1201 disposed on both front sides of the bottom surface of the mouthpiece 500, a pair of rear wheels 1202 disposed behind the front wheels 1201, and cleaning during use of the electric vacuum cleaner 1. A pair of rear wheels 1203 are provided for receiving pressure against the surface.

Here, the front wheel 1201 and the rear wheel 1202 are arranged at positions facing each other. That is, as described above, a pair of front wheels 1201 and a pair of rear wheels 1202 are located on the radially extending portion of the turbine 1012 of the lower case 1001, and the space between the suction port 1010 at the lower part of the turbine 1012 and the cleaning floor surface. The gap is kept constant. Further, by providing a pair of rear 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 rear wheels 1203 receive the force. The clearance with the cleaning floor is kept constant. In addition, since the universal connection portion 1500 is provided so as to sandwich the universal connection portion 1500, the operation range of the universal connection portion 1500 in the height direction Y, particularly the minimum angle Θ3, is not hindered.

As described above, the mouthpiece 500 according to the present embodiment is greatly characterized in that it moves in the vertically long movement direction V1 in addition to the movement in the horizontally long movement direction V2. In this embodiment, a sliding member 1210 is provided around the wheel 1200 as shown in FIG. 14 in order to achieve the movement in the vertical movement direction V1.

As described above, the front wheel 1201 and the rear wheel 1202 are respectively provided on the bottom surface of the mouthpiece 500 according to this embodiment, and the rear wheel 1203 is provided at the rear central portion. Point (basic arrangement) wheels. According to this wheel configuration, it is possible to obtain excellent running performance in the horizontally long moving direction V2, and also excellent running performance not only in the vertically long moving direction V1 but also in oblique movement and rotation. In particular, since the rearmost wheel 1203 is located closer to the user than the rotation shaft 1503 of the universal connection portion 1500 during use, the rearward wheel 1203 moves in the laterally long moving direction V2, and particularly the rising of the tip of the mouthpiece 500 when retracting. Can be reduced. Further, since the rotation shaft 1503 of the free connection portion 1500 is provided in the five-point wheel, even if the mouthpiece 500 is rotated via the hand handle 300, the inclination of the mouthpiece 500 (lift of the corner). Can be reduced. In addition, since each wheel 1200 is disposed at a corner of the mouthpiece 500, it is possible to reduce the possibility of the wheel 1200 being caught during rotation.

Next, a dust guiding 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 has a function of efficiently sucking in dust that is difficult to suck in by a flat portion 1302 formed between the mouthpiece 1010 and the tip of the mouthpiece 500.

[0177] The guide means 1300 according to this embodiment is for efficiently sucking the dust which is difficult to suck. In the guide means 1300 of this embodiment, 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 rate can be increased because the number of the flow passages 1315 is reduced, and the effect of wiping the floor can be enhanced because the brushes 1314 are densely arranged.

[0178] The pressure control plate 1301 receives the dust that has rushed backward in the flow path 1312 and is sucked into the suction port 1010 again.

[0179] Note that the flexible connection portion 1500 may be covered with a flexible sheet as shown by a dotted line. The sheet may be a rubber material formed in a tubular shape, a soft resin formed in a Java-like shape, or a woven fabric, as long as it does not hinder the operation range of the free connection. In addition, it is preferable to make it detachable in consideration of cleanability. In this way, it is possible to prevent the finger from being pinched by the flexible connecting portion 1500 and to enhance the safety.

Next, the flexible connecting portion 1500 will be described in detail with reference to FIGS. 38 is an external perspective view of the universal connecting portion, FIG. 39 is a plan view of the universal connecting portion, FIG. 40 is an assembly process diagram of the universal connecting portion, FIG. 41 is an explanatory view of an application example of another universal connecting portion, and FIG. 14 is a diagram illustrating the operation principle of the universal connection unit 1500. FIG.

38 and 39, first, a mouthpiece 500 according to this embodiment has a joint in which two arms (a lower arm 1502a and an upper arm 1502b) are rotatable about two rotation axes orthogonal to each other. Shaped hinge is adopted.

Specifically, the lower arm portion 1502a formed in a cylindrical shape is formed by forming notches 1510 and 1511 in the upper and lower portions around the rotation shaft 1503, and is cut out in an arc shape, thereby forming the rotation shaft. The rotation of the lower arm 1502a around the center 1503 is made smooth and the angle in the height direction Y is determined. That is, the lower cutout 1510 of the lower arm 1502a, together with the cutout 1024 (see FIG. 30) formed behind the attachment shaft 1006 of the lower case 1001, determines the minimum angle Θ3 of the angle in the vertical direction Y. I have. In this embodiment, the angle is set to about 5 degrees so that the adapter or the like attached to the universal connection portion 1500 or the connection pipe 400 does not contact the floor surface. The upper cutout 1511 together with the cutout 1025 (see FIG. 30) formed at the rear of the rear upper cover 1003 determine the maximum angle Θ4 of the angle in the height direction Y. In this embodiment, by setting the angle to about 95 degrees, vertical storage is possible in a state where the mouthpiece 500, the connection pipe 400, and the handle 300 are connected.

On the other hand, the lower arm portion 1502a and the upper arm portion 1502b determine the angle １５5 in the left-right direction X by forming notches 1512 and 1513 on both sides of the rotation shaft holes 1504 and 1505. In this embodiment, the angle Θ5 is formed so as to have an operating range of 180 degrees in total by 90 degrees to the left and right.

According to this articulated structure, the rotation in the height 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 mouthpiece 500 is performed. P2 can be obtained. The height direction Y, the left-right direction X, and the rotations P1 and P2 can also be obtained by rotating the lower arm 1502a and the suction main body 1000 in the left-right direction X and rotating the upper arm 1502b in the height 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 the rotation in the vertical direction Y. When 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. However, the present invention is not limited to this structure. For example, as shown in FIG. 38 (b), a convex shaft 1504a is formed instead of the rotary hole 1504 of the upper arm 1502b of the embodiment, and the convex shaft 1504a is formed instead of the rotary hole 1505 of the lower arm 1502a. A concave receiving shaft 1505a for receiving the 1504a is formed, and 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 made firm 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 fitting can be released without damaging the flexible connecting portion 1500 by the elastic force of the resin material, and damage can be avoided. Of course, it is easy to return to the original fitting state by the elastic force, and the assembling property is improved.

In FIG. 39, the distance L1 between the center of the rotating shaft 1503 and the centers of the rotating shaft holes 1504 and 1505 is determined in consideration of the minimum bending radius R of the connecting hose 1501. That is, the distance L2 between the positions 1514 and 1515 where the connecting hose 1501 is fixed to the lower arm 1502a and the upper arm 1502b and expansion and contraction is restricted 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 diameter 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 this embodiment, the minimum bending radius R of the connecting hose 1501 is set to a value in which the connecting hose 1501 is set to be slightly pulled for the reason described below, but is not limited to this. Not something. The connection hose 1501 in a normal state may be employed.

In addition, in this embodiment, since the connecting hose 1501 is covered with the lower arm 1502a and the upper arm 1502b, the portion where the connecting hose 1501, the lower arm 1502a and the upper arm 1502b are in contact with each other is reinforced. By providing the members, it is possible to reduce troubles such as the connection hose 1501 being sunk and a hole, and to improve the 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 turning the rotation in the left-right direction X at a position of 90 degrees into a locked state. For example, in this embodiment, the lower arm 1502a and the upper arm 1502b are linear on the sliding surface of the lower arm 1502a and the upper arm 1502b in a state where the rotary shaft holes 1504 and 1505 are fitted with the pin 1506. A convex portion 1517 and a concave portion 1518 which are fitted at positions are provided. Note that the strength of the fitting between the convex portion 1517 and the concave portion 1518 is appropriately determined in terms of the distance from the rotation axis and the size of the unevenness in consideration of the elasticity of the resin material.

According to the lock mechanism 1516, when the lower arm 1502a and the upper arm 1502b are linear, rotation in the left-right direction X is fixed, so that the straightness of the mouthpiece 500 is improved. This makes it easy to move in the front-back direction. On the other hand, when the mouthpiece 300 is rotated through the handle 300, the fitting between the convex portion 1517 and the concave portion 1518 formed of a resin material is disengaged by elasticity, so that the lock mechanism 1516 can be removed 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 formed at a predetermined angle (45 degrees, 90 degrees, etc.) with high frequency. A plurality may be provided.

Next, an assembling process of the universal connecting portion 1500 will be described with reference to FIG. First, the connecting hose 1501 of this embodiment is attached to the bell mouth body 1009 and the upper arm 1502b so as to be pulled. By this pulling force, the connecting hose 1501 is maintained in a straight state in a straight state, and acts strongly in a bending direction when a bending force is applied. Therefore, when the lock mechanism 1516 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 pulling force of the connecting hose 1501 is used as one means for improving the straightness of the mouthpiece 500. For example, a pulling member such as a spring or rubber is symmetrical 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 connection hose 1501 is attached to the pull.

First, as shown in FIG. 19A, the connecting hose 1501 is passed through the lower arm 1502a, and one end of the connecting hose 1501 is attached to the rear end 1009a of the bellmouth body 1009. Is attached to a notch 1008 provided at the center of the partition wall 1004, the rotating shaft 1503 of the lower arm 1502a is attached to the bearing 1018 of the attaching portion 1006 of the lower case 1001, and the rear upper case 1003 is attached. Then, the bell mouth body 1009 and the lower arm 1502a are fixed. At this time, the other end of the connecting hose 1501 is fitted with a fitting hole 1519 formed in the upper arm 1502b to connect the connecting hose 1501 and the upper arm 1502b to each other. A connecting portion 1521 provided with a packing 1521b for keeping airtightness with the mounting portion 1501 is attached.

Next, as shown in FIG. 17B, the upper arm 1502b and the lower arm 1502a intersect, and the connecting portion 1521 is inserted into the upper arm 1502b, so that the fitting hole 1519 and the convex rib 1520 are inserted. To connect the connecting hose 1501 and the lower arm 1502a.

Next, as shown in FIG. 19 (c), the upper arm 1502b is pulled to align the rotary shaft holes 1504 and 1505, and the pin 1506 is inserted to connect the upper arm 1502b and the lower arm 1502a. The assembly of the universal connection portion 1500 can be completed.

When the convex shaft 1504a and the concave receiving shaft 1505a described with reference to FIG. 38B are employed, the fitting is performed by utilizing the elasticity of the resin material. This assembling step is an example, and may be assembled in another step.

Next, FIG. 41 shows another embodiment in which the assemblability and the disassembly of the flexible connecting portion 1500 are improved. 41, (a) is a partially enlarged view and a partial cross-sectional view of a 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. FIG.

In FIG. 41, to the other end of the connecting hose 1501, a connecting portion 1521a provided with a packing 1521b similar to the above embodiment is attached. A convex rib 1520a which can be cut into the connecting portion 1521a and pushed inward is provided, and the upper arm portion 1502b is fitted with the convex rib 1520a, and can be cut and extended outward. A release button 1519b having a mating hole 1519a is provided. According to this structure, the connecting portion 1521a is inserted into the upper arm portion 1502b, the convex rib 1520a and the fitting hole 1519b are fitted, and the connecting hose 1501 The arms 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 connecting hose 1501 can be removed.

For this reason, when cleaning the mouthpiece 500, it is possible to easily clean the inside of the connection hose 1501 which is easily contaminated. 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 fitting is disengaged. By rotating the hose 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, the connection hose 1501 can be easily replaced at the time of maintenance, and the cleaning performance of the mouthpiece 500 can be improved. In particular, when the mouthpiece 500 is washed as a whole, the connecting hose 1501 can be easily washed and dried.

Next, the operation principle of the mouthpiece 500 according to this embodiment will be described with reference to FIG. The mouthpiece 500 according to this embodiment can transmit the rotation P1 of the twisting operation of the hand handle 300 to the rotation P2 of the mouthpiece main body 1000 as it is, and the operation principle can be described as follows, for example. .

(A) is a side view of the mouthpiece 500 conceptually showing a state A1 in which the angle of the elevation direction Y is 45 degrees and a state A2 in which the angle is 90 degrees. FIG. FIG. 13 is a side view of a state A3 in which the angle is reduced to about 30 degrees from the angle of the elevation direction Y.

(B) is a plan view of the mouthpiece 500 in a state A1 in which the angle of the elevation direction Y is 45 degrees, and in a state A0 in which the angle of the twisting operation P1 is 90 degrees from the state A1, c) shows a front view of the mouthpiece 500 in the state A0 in which the angle of the twisting operation P1 is 90 degrees.

(A) In this embodiment, in this embodiment, a first rotation shaft 1533 and a second rotation shaft 1535 are arranged on an extension of the central axis Q of the connection pipe 400. That is, the tube axes of the lower arm 1502a and the upper arm 1502b are arranged on an extension of the central axis Q of the connection pipe 400. According to the experimental verification of this embodiment, the rotation P1 of the twisting operation of the hand handle 300 is related to the rotation P2 of the suction body 500 centered on the intersection G1 where the extension of the central axis Q intersects the floor. Is converted. Therefore, in the state A2 where the angle of the elevation direction Y is 90 degrees, the intersection G2 where the extension of the central axis Q intersects the floor is located directly below the handle 300, so that the rotation of the twisting operation P1 of the handle 300 is performed. It can be done easily. On the other hand, as shown in FIG. In the state A3 in which the angle of the height direction Y is small, the intersection G3 is far away, so that the rotation P2 of the mouthpiece 500 cannot be obtained unless the twist rotation P1 is applied with a large force. However, as is apparent from the figure, if the angle in the elevation direction Y is too small, the extension of the central axis Q does not intersect with the floor surface, so that the rotation P2 of the mouthpiece 500 cannot be obtained.

In elucidating the operation principle of this embodiment, the first state A1 of the rotation operation and the final state A0 are determined by fixing the suction body 500 and rotating / moving the handle 300 side. Is compared. First, as shown in (a) and (b), in the first state A1, an intersection G1 at which the extension of the central axis Q intersects the floor is set substantially at the center of the mouthpiece 500. However, as shown in (b) and (c), when the hand handle 300 is moved to the final state A0 by applying the twisting operation P1, the intersection G0 where the extension of the central axis Q intersects the floor is a suction port. It is set on one side of the body 500 in the longitudinal direction. That is, in a normal operation state, the hand handle 300 is operated at a predetermined position by the user, so that the rotation P2 of the mouthpiece 500 rotates while moving the intersection G1, which is the center of the rotation P2, to G0. I do. More specifically, when the twisting operation P1 of the handle 300 is applied in the direction of the arrow E1, the suction main body 1000, which originally intended to rotate according to the twisting operation P1, is rotated by the floor surface. Since the rotation is blocked, the first rotation shaft 1533 operates so as to rotate while tilting the rotation shaft and escape in the direction of the arrow E2. On the other hand, the second rotating shaft 1535 operates to receive the twisting operation P1 on the entire bottom surface of the suction body 500, and follows and interlocks with the first rotating shaft 1533 that rotates while tilting the rotating shaft. Then, the operation is performed so as to gradually rotate, that is, increase the angle in the height direction Y. As a result, the mouthpiece 550 rotates in the direction of the arrow E3 while the center position of the rotation P2 is changed from G1 to G0. In this embodiment, since the first and second rotating shafts are provided on the extension of the central axis Q, the center position of the rotation P2 of the mouthpiece 550 moves little.

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

In FIG. 43, first, in the vacuum cleaner 1 according to the present embodiment, as in the first embodiment, the user holds the hand handle 300 in a standing posture, so that the By operating the mouthpiece 500, the floor surface can be cleaned. At this time, since the vacuum cleaner main body 100 connected to the handle 300 via the suction hose 200 is provided with a pair of large wheels 101 and one free wheel 102, cleaning is performed while moving. be able to. Also in this embodiment, the length of the extension tube 10 is set so that the user can operate the most, that is, the angle of the extension tube 10 is 45 degrees in accordance with the average body shape of a Japanese woman. I have. Since the handle 301 of the handle 300 is set at about 110 degrees, the user holding the handle 301 can easily move in the front-rear direction when the angle of the extension tube 10 is 45 degrees. be able to. Further, since the lower arm 1502a of the free connecting portion 1500 rotates in the height direction Y, the bottom surface of the mouthpiece 500 where the mouthpiece 1010 is provided, 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 caused by the fact that 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 45 degrees. The rotation of the mouthpiece 500 in the left-right direction X can be reduced even if the mouthpiece 500 is moved in the front-back direction. Furthermore, in this embodiment, since the lock mechanism 1516 and the connecting hose 1501 provided for pulling are provided, the straightness of the mouthpiece 500 can be further improved.

In addition, the wheels 1200 provided on the bottom surface of the mouthpiece 500 rotate as normal wheels around the rotation shaft 1211 to improve the straightness. In particular, the rearmost wheel 1203 reduces the lifting of the front end portion of the suction body 500 in the front-rear movement, thereby obtaining a good straightness. In addition, in this embodiment, the dust on the floor surface can be doubled by the brush 1214 of the guide means 1300 and the double brush of the rotating brush 1011 to improve the suction efficiency.

Here, in this embodiment, the extension tube 10 in the normal posture is rotated by 45 degrees in the vertical direction by rotating the lower arm 1502a in the height direction Y and by rotating the upper arm 1502b in the left and right direction X. Straightness in the state can be improved. In a structure in which the lower arm 1502a rotates in the left and right directions 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. However, since there remains a problem in the straightness, it is necessary to provide the lock mechanism 1516 for preventing rotation in the left-right direction X.

In FIG. 44, in this embodiment, the direction of the mouthpiece 400 can be changed by linking the rotation of the hand handle 300 by twisting the handle portion 301 of the hand handle 300. 44 (a), the handle 301 is straightened, FIG. 44 (b) is the handle 301 twisted 45 degrees, and FIG. 44 (c) is the handle 90 ° twisted. FIG. 3 is a state diagram of 300 and a mouthpiece 500. In FIG. 44, three angles are used for the sake of explanation. However, the angle of the twisting operation of the hand handle 300 and the angle of the mouthpiece 500 are linked at any angle in the operation range.

[0210] First, in Fig. 21 (a), the vehicle travels straight in a state where the twist angle of the handle portion 301 is 0 degrees and the extension of the center line of the connecting pipe 400 is orthogonal to the longitudinal direction of the mouthpiece 500, that is, in a horizontally long form. This is a state suitable for the moving direction V2.

[0211] On the other hand, as shown in Figure (b), 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 it is possible to perform a forward and backward movement while the suction body 500 is tilted. For example, it is very effective when cleaning narrow parts with obstacles in front. In addition, since the direction of the wheel 1200 is changed by changing the direction of the mouthpiece 500, the course of the mouthpiece 500 can be easily changed like turning a steering wheel of an automobile.

[0212] Further, as shown in Figure (c), when the handle portion 301 is twisted by 90 degrees, the direction of the mouthpiece 500 can be rotated by 90 degrees by the action of the universal connection portion 1500. In this state, the wheel 1200 of the suction body 500 slides in the horizontal direction, so that the suction body 500 can be moved in the vertically long shape movement direction V1 while being rotated by 90 degrees. This posture is extremely effective for cleaning the wall. This cleaning at the wall will be described with reference to FIGS.

In FIG. 45, FIG. 45 (a) shows a state in which the wall is cleaned with the mouthpiece 500 rotated exactly 90 degrees, and FIG. 45 (b) shows a state in which the wall and the handle have a distance about the shoulder width. This shows a state in which the suction body 500 is rotated close to 90 degrees and the wall is cleaned. Further, FIG. 9C is a diagram showing that by setting the rotation range in the left-right direction X of this embodiment wider than the 180-degree operation range, 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. 45, the suction body 500 is moved in the longitudinal movement direction while moving the hand handle back and forth with the longitudinal side of the suction body 500 in contact with the wall surface. It can be moved to V1. 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 portion allows dust between the suction port 1010 and the wall surface to be removed. Can be efficiently sucked.

Next, in FIG. 46, the suction body 500 according to this embodiment can reduce the overall height H while having the turning performance of the suction body 500, and therefore, the lower part such as the lower part of furniture can be used. Excellent cleanability. 46 (a) and (b) are a side view and a plan view in the use state of the conventional example, and FIGS. 46 (c) and (d) are a side view and a plan view in the use state of this embodiment.

[0216] As is clear from the comparison between the figures (a) and (c), according to the present embodiment, the lower handle 300 can be used to penetrate the lower gap. Since a 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 overall height H. However, since the suction body 500 faces obliquely, there is a clearance. There remains a problem with the cleanability behind the house. On the other hand, in the present embodiment, as shown in FIG. 5D, the longitudinal side of the mouthpiece 500 can be directly opposed to and tightly attached to the wall surface in the back of the gap without performing a twisting operation. Moreover, the lock mechanism 1516 can maintain a state where the extension of the central axis of the connection pipe 400 and the longitudinal direction of the mouthpiece 500 are orthogonal to each other. In particular, in this embodiment, since the free connecting portion 1500 has a horizontal straight line, the height of the mouthpiece 500 can be significantly reduced.

Fourth Embodiment Next, another embodiment of the vacuum cleaner according to the present invention will be described with reference to FIGS. 47 to 52. The fourth embodiment differs from the third embodiment in that the mouthpiece 500 of the third embodiment is changed to a mouthpiece 510 in which a connecting hose 1630 serving as a transport passage and a support member of the mouthpiece 500 are separated. The same vacuum cleaner main body 100 and the like are employed. Here, the mouthpiece 510 will be described, and description of other parts will be omitted. In addition, similar structures, parts, arrows and the like indicate the same reference numerals, and description thereof will be omitted.

First, the outline of the fourth embodiment will be described with reference to FIG. 47 showing an external perspective view. The mouthpiece 510 according to this embodiment includes a mouthpiece 1050 having a mouthpiece 1010 (see FIG. 48) for sucking dust on the bottom surface, and the mouthpiece body 1050 connected to the connection pipe 400. And a universal connection portion 1600 that operates so that the bottom surface of the suction opening main body 1050 always contacts the floor surface in response to the movement of the hand handle 300 transmitted through the interface.

The suction main body 1050 has a suction surface 1010 (see FIG. 48) provided with a rotary brush 1011 (see FIG. 48) for sucking dust on the floor surface on the bottom surface. The universal 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 line of the central axis Q of the connection pipe 400. It comprises a flexible hinge 1 602 for rotatably connecting the connection portion 1050 and the connection portion 1601, and a flexible connection hose 1603 for connecting the suction main body 1050 and the connection portion 1601.

The free hinge 1602 is rotatably connected to the height direction Y of the hand handle 300 and the left and right direction X around the mouthpiece 510, and controls the rotation P1 of the twisting operation of the hand handle 300. A mechanism for transmitting the rotation to the rotation P2 of the mouthpiece main body 1050 is provided. In this embodiment, a first Y-shaped body 1604 provided on the suction main body 1050, a second Y-shaped body 1605 attached to the connection portion 1601, the first Y-shaped body 1604 and the second Y-shaped body 1604 are provided. A connecting body 1606 is attached to the character 1605 so that the rotation axis is orthogonal to the character and is rotatably mounted about the intersection S1 intersecting the character 1605 and connects the two Y-characters 1604 and 1605.

In the present embodiment, although details will be described later, the operation in the elevation direction Y can be performed in a range of about 90 degrees or more 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 property near the wall and smoothly moving the mouthpiece 1050 in the longitudinal direction V on the bottom surface. A free wheel 1250 (see FIG. 50) is provided. Further, by providing a dust guide means 1300 (see FIG. 50) at the front portion (between the front end portion) of the suction port 1010 provided on the bottom surface of the suction port main body 1050, it is possible to efficiently suck dust near the wall which is difficult to remove. Can be. The description of the sliding member 1100 is omitted because it is the same as that of the first embodiment.

As described above, according to the mouthpiece 510 according to the present embodiment, the connection hose 1603 having the same effect as that of the first embodiment and having a function of transporting dust is provided. The structure is separated from the rotatable hinge 1602 rotatably supported, so that 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. 48 is a structural diagram of a part, FIG. 49 is a structural view of a universal hinge, FIG. 50 is a bottom view of an external appearance, FIG. 51 is a schematic sectional view, and FIG.

First, the component configuration of the mouthpiece 510 will be described with reference to FIGS. In the drawing, as described above, the mouthpiece body 510 includes the mouthpiece main body 1050 and the free connection portion 1600. The mouthpiece main body 1050 is composed of a lower case 1051 that forms the skeleton of the mouthpiece main body 1050, a front upper cover 1052 that covers the front of the mouthpiece main body 1050, and a rear upper cover 1053 that covers the rear of the mouthpiece main body 1050. .

[0226] The rear upper cover 1053 is attached to the lower case 1051 via screws, and forms a ventilation passage 1007 (not shown) disposed rearward on both sides. An attachment portion 1055 of the connection hose 1603 is disposed at the center of the upper front portion, and a first Y-shaped body 1604 of the universal connection portion 1600 is provided behind the attachment portion 1055. Further, a bell mouth body 1009 communicating with the mounting portion 1055 of the connecting hose 1603 is provided at the center of the front part of the rear upper cover 1053, and an opening 1015 communicating with the ventilation path 1007 is provided on both sides thereof. .

The front upper cover 1052 is detachably attached to the lower case 1051 to form a dust collection 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. In this embodiment, similarly to the first embodiment, the turbine 1012 and the rotating brush 1011 are rotated by the ventilation holes 1016, and further, due to the synergistic effect of the swirling flow generated in the suction port 1010, the dust can be absorbed while the dust on the cleaning surface is wound up. .

The universal connecting part 1600 includes a connecting part 1601, a universal hinge 1602, and a connecting hose 1603. The connecting portion 1601 includes a connecting portion 1507 which is detachably attached to the connecting tube 400 at one end, and the second Y-shaped member 1605 of the universal hinge 1602 is attached to the other end, and is connected to the second Y-shaped member 1605. The portion 1507 is positioned substantially on the extension of the central axis Q. Also, as shown in FIG. 51, 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. An attachment portion 1608 for a connection hose 1603 communicating with the dust collection passage 1607 is formed at the front. Thus, the clogging of the dust collection path 1607 is reduced. The connection hose 1603 is detachably attached to the attachment portion 1608 and the attachment portion 1055 of the mouthpiece main body 1050.

Next, the flexible hinge 1602 will be described with reference to FIG. In the figure, the universal hinge 1602 is capable of rotating on both axes by making a rotation axis Y1 rotatable in a height direction Y and a rotation axis X1 rotatable in a left-right direction X orthogonal to one point of an intersection S1. It has a structure to be. Rotation shafts 1604a and 1405a are provided inside the distal ends of the first Y-shaped body 1604 provided on the suction main body 1050 and the second Y-shaped body 1605 attached to the connection portion 1601, respectively. It is rotatably mounted in a bearing hole (not shown) of the body 1606. The free hinge 1 602 is an articulated hinge, as in the first embodiment, although the rotation axis Y1 and the rotation axis X1 are orthogonal to each other at one intersection S1. Therefore, this operation principle can be described, for example, in the same manner as the principle described with reference to FIG. In other words, in this embodiment, it can be considered that the length of the lower arm 1502a is reduced and the length is eliminated. Therefore, 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 of the rotation P1 of the hand handle 300 can be transmitted to the suction main body 1050 to rotate the suction body 510. it can. Therefore, the rotation axis Y1 and the rotation axis X1 need not intersect at one point of the intersection S1. However, by intersecting at the intersection S, the free hinge 1602 can be made very compact.

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 at 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. Further, the rearwardly displaced wheel arrangement covers the rear portion of the mouthpiece 510 to which addition accompanying the moving operation transmitted from the hand handle 300 is likely to be added, and is effective in maintaining the posture of the mouthpiece 510. .

In this embodiment, by providing the free wheel 1250 in the recess, the clearance between the suction port 1010 and the floor surface is not increased, and the rear center of the bottom surface serving as a dead space is formed in a concave shape. Thus, the strength of the mouthpiece 510 is increased and the weight is reduced.

Further, in this embodiment, the guide means 1300 is provided at the front of the bottom surface of the suction body 510, so that the suction port 1010 disposed between the front wheel 1252 and the guide means 1300 and the cleaning floor surface are provided. The gap between them is kept constant. Thus, the guide means 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.

In the guide means 1300 of this embodiment, a brush table 1215 in which a bunch of brushes 1310 are arranged in a row in the longitudinal direction of the mouthpiece 510 is attached to the distal end of the flat portion 1302.

In FIGS. 51 and 52, in this embodiment, the connecting hose 1630 is attached so that the tip of the mouthpiece 510 does not go up when the angle in the vertical direction Y is 0 °. Thereby, even if the suction body 510 is inserted into a low gap such as under a desk as shown in FIG. 51, the distal end does not rise, and the connection pipe 400 has a frequently used posture of 45 degrees. Even in the posture in which the angle in the left-right direction X is 90 degrees as shown in FIG. 51, the extra connecting hose 1630 hinders the maintenance of the posture, adds a twisting operation of the handle at hand, or adds the connecting hose 1630. To reduce the risk of breaking and causing jams.

Further, in this embodiment, the connecting hose 1630 forming the dust transfer passage and the support member of the suction body 510 are separated, so that, for example, as shown in FIG. By removing the connecting hose 1603 attached to the connector tube and attaching a separate clearance nozzle, it is possible to clean the clearance that is difficult to remove without disassembling the connection pipe 400. At this time, if the clearance nozzle is mounted near the mouthpiece 510, for example, by attaching a mounting device to the connection portion 1601, the work efficiency can be improved.

Further, 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 handle is directly attached to the handle 300 by removing the connection pipe 400. By extending the length of the connecting hose 1630, for example, by attaching a long second Y-shaped body 1605, the operating range of the connecting hose 1630 having a clearance nozzle can be widened. In this case, the connecting hose 1630 is detachably held by the second Y-shaped body 1605 so that the connecting hose 1630 does not disturb the posture maintenance or the like, and the handle of the second Y-shaped body 1605 is It is preferable to provide the holding members at appropriate intervals.

Further, according to this embodiment, the dust conveyance path and the support member of the suction body 510 are separated, so that the operation range in the left-right direction X is 180 degrees or more, and the height direction Y is 90 degrees or more. It can be easily set.

As described above, according to the fourth embodiment, the same effect as that of the third embodiment can be expected, and the dust conveying passage and the support member of the suction body 510 are separated, so that the universal hinge is provided. 1602 can be reduced in size with a simple structure and reduced in manufacturing cost. In addition, if one end of the connecting hose 1630 serving as the transport passage is removed, the auxiliary suction port can be used as another auxiliary suction port, and if the both ends are further removed, the maintenance property and the cleaning property can be improved. Further, the operation range of the universal connection part 1600 can be widened.

In this embodiment, the rotation axes of the Y-shaped body 1604 and the second Y-shaped body 1605 are orthogonal to each other and are rotatably mounted around the intersection S1 thereof. However, the present invention is not limited to this. It is not something to be done. For example, it may be constituted by a mechanism having the operation principle described with reference to FIGS. 25 and 28, and a connecting hose 1630 separated from the mechanism. In this case, the connecting hose 1630 may be appropriately fixed to the mechanism, or may be provided with a separate guide.

Fifth Embodiment Next, another embodiment of the vacuum cleaner according to the present invention will be described with reference to FIGS. 53 and 54. This fifth embodiment differs from the mouthpiece 500 of the third embodiment in that the attachment position of the universal connection portion 1500 is different, and the other vacuum cleaner main body 100 and the like adopt the same one. I have. FIG. 53 is a schematic external perspective view, and FIG. 54 is a structural conceptual view. Here, the mouthpiece 520 will be described, and description of other parts will be omitted. In addition, similar structures, parts, arrows, etc. indicate the same reference numerals, and description thereof will be omitted.

The mouthpiece 520 of this embodiment includes a mouthpiece body 1060 having a substantially rectangular parallelepiped planar shape, and a free connection portion 1700 attached to the center of the upper surface of the mouthpiece body 1060. The universal connecting portion 1700 has the same structure as the universal connecting portion 1500 including the connecting hose 1501 in the universal hinge 1502 described in the first embodiment.

The suction main body 1060 includes a lower case 1061 and an upper case 1062, and forms a suction chamber 1050. In the suction chamber 1050, two suction ports 1010a and 1010b formed in the lower case 1061 are disposed before and after (short direction) of the suction body 520, and a rotary brush 1011 is provided in the suction ports 1010a and 1010b. There. In this embodiment, the rotary brush 1011 is rotated via a belt by an electric motor 1063 provided between the suction port 1010a and the suction port 1010b. The electric motor 1063 is powered from the vacuum cleaner main body 100 along the suction hose 200, the hand handle 300, the connection pipe 400, and the free connecting portion 1700, or by a built-in wiring. It should be noted that, similarly to the above-described embodiment, an air turbine driven one may be employed. In addition, the electric motor 1063 is arranged below the mounting portion of the free connecting portion 1700 to improve the overall balance.

The upper case 1062 is formed in a so-called kamaboko shape having a semicircular shape with a convex side surface and long in the longitudinal direction, and a hose mounting portion 1064 to which a connecting hose 1501 is mounted is provided at the center of the upper surface. The rotating shaft 1503 of the lower arm 1502a constituting the universal hinge 1502 is attached to both sides of the hose attaching portion 1064, that is, on the longitudinal side of the mouthpiece 520, to form a pair of bearing bases 1065. 0 is rotatably mounted.

The bearing center 1065a of the bearing base 1065 is set at the position of H1 from above the upper case 1062, and the height H1 is set to a height at which the angle of the free connecting portion 1700 in the height direction Y becomes 0 degree. You have set. In this embodiment, the height H1 is reduced by making the side shape of the upper case 1062 semi-circular, so that the tip of the mouthpiece 520 (the left side in FIG. 53) is reduced.

In this embodiment, the connecting hose 1501 and the free connecting portion 1700 are provided directly above and below the upper case 1062 symmetrically in the front-rear and left-right directions. Good. By doing so, the height H1 can be reduced, and the movement of the free connecting portion 1700 in a state where the angle in the height direction Y is small is improved. In this case, the horizontal width (before and after the mouthpiece 520) of the universal connection part 1700 should not protrude from the projection area of the mouthpiece 520 with the angle of the universal connection part 1700 being 90 degrees in the left-right direction X. .

[0246] Further, around the side surface of the mouthpiece 520, a sliding member 1100 similar to that of the above embodiment is formed in a belt shape. Further, around the bottom surface of the suction body 520, a guide means 1300 similar to that of the above-described embodiment is provided, and the same as a wheel for raising dust and guiding the suction to the suction port 1010, and maintaining a constant clearance between the suction port 1010 and the floor surface. Functions. Needless to say, wheels 1200 and free wheels 1250 similar to those in the above-described embodiment may be provided at the four corners of the bottom surface or at the center or both sides at the rear of the bottom surface where the force of the hand handle 300 is most capable of turning back and forth, left and right, and turning. .

As described above, according to the fifth embodiment, since the free connecting portion 1700 is provided above the mouthpiece main body 1060, the installation area of the mouthpiece 520 can be reduced. For this reason, the cleaning performance of the narrow gap as shown in FIG. 45 (c) is improved. Moreover, since the sliding member 1100 is provided around the side surface of the mouthpiece 520, there is no frontality, so that even the narrow gap can be cleaned along the surrounding furniture and the wall surface. And scratching the wall can be reduced. Further, according to this embodiment, since the angle in the height direction Y can be set to 90 degrees or more, for example, it is possible to clean an ascending slope without taking an unreasonable posture.

(Sixth Embodiment) Next, a sixth embodiment according to the present invention will be described with reference to FIG. 55 showing a mechanism conceptual diagram. In this embodiment, a connecting hose 1501 having the function of a dust conveyance path of the above embodiment and a free hinge 1502 are integrally formed. In the drawing, the mouthpiece 503 of this embodiment includes a mouthpiece main body 1070 and a free connecting portion 1800 formed of a resin material. The universal connecting portion 1800 is rotatably attached to the mouthpiece main body 1070 and is rotatable in the vertical direction Y. The lower arm portion 1801a has one end attached to the connection pipe 400 and the other end attached to the lower end. It is composed of an arm portion 1801a and a cylindrical upper arm portion 1801b attached so as to enable rotation in the left-right direction X.

The suction main body 1070 has an opening 1071 at the rear center thereof communicating with the suction chamber, and a pair of bearing stands 1072 is formed on both sides of the opening 1071. One end of the lower arm portion 1801a has an arc-shaped side surface, and a rotating shaft 1802 is provided on both side surfaces, and is rotatably attached to the bearing stand 1072. The peripheral shape of the opening 1071 is formed so as to match the arc shape of one end of the lower arm 1801a so that no air leaks. The opening 1803 formed at one end of the lower arm 1801a is formed to be narrower in the vertical direction than the opening 1071 of the mouthpiece main body 1070, so that the openings 1071 and 11803 communicate with each other in the operating range in the height direction Y. I am trying to do it. On the other hand, the other end of the lower arm portion 1801a has an upper shape formed by cutting out both sides, and a rotating bearing 1804 is provided on the upper and lower inner sides of the tip.

One end of the upper arm portion 1801b has an upper surface formed in an arc shape, and a rotating shaft 1805 is provided on upper and lower surfaces, and is rotatably attached to the rotary bearing 1804. The peripheral shape of the opening 1806 of the lower arm portion 1801a is formed so as to match the arc shape at one end of the upper arm portion 1801b so that there is no air leakage. The opening 1807 formed at one end of the upper arm 1801b is formed to be narrower in the left-right direction than the opening 1806 of the lower arm 1801a. 1807 communicate with each other. On the other hand, the other end of the upper arm portion 1801b is provided with a connecting portion 1521 that is detachably connected to the connection pipe 400.

According to this embodiment, the same effect as that of the above embodiment can be obtained with a reduced number of parts and a simple structure. In addition, the connection of each member is made by using the elasticity of the resin material, so that even if stress is applied from the outside, the connecting portion is detached and can be connected again, so that destruction of the device is reduced, Moreover, assemblability can be improved.

Seventh Embodiment Next, a seventh embodiment according to the present invention will be described with reference to FIGS. 56 to 58. In this embodiment, the operation guide means is provided in the connecting hose 1501 having the function of the dust conveyance path of the above embodiment, and the universal hinge 1502 is omitted. FIG. 56 is a schematic external perspective view, FIG. 57 is an enlarged view of a universal connecting hose, and FIG. 58 is a structural conceptual diagram of another application example.

First, in FIG. 56 and FIG. 57, the mouthpiece 540 of this embodiment includes a mouthpiece main body 1080 and a universal connection hose 1900. The free connecting portion 1900 is a hose body having an appearance in which concave portions 1901 and convex portions 1902 are alternately continuous in the pipe direction, one end of which is attached to the attaching portion 1801 of the suction body 1080, and the other end of which is connected to the connecting pipe 400. A connecting portion 1507 for attachment is attached.

In the universal connection hose 1900, a vertical operation guide rib 1903 is integrally formed on both sides of the installation side の of the suction main body 1080. On the other hand, on the mounting side の of the connecting portion 1507, left and right operation guide ribs 1904 are integrally formed vertically so as to be orthogonal to the mounting position of the vertical operation guide ribs 1903.

The vertical movement guide rib 1903 is formed in a convex shape so as to fill the concave portion 1901 so as to prevent the flexible connection hose 1900 from bending in the left-right direction X and enable bending in the height direction Y. . Similarly, the left-right operation guide rib 1904 is formed in a convex shape so as to fill the concave portion 1901 so as to prevent the flexible connecting hose 1900 from bending in the height direction Y and enable bending in the left-right direction X. . The upper and lower operation guide ribs 1903 and the left and right operation guide ribs 1904 can reduce the torsion of the universal connection hose 1900.

The width Z1 and protrusion amount Z2 of the vertical operation guide rib 1903 and the left / right operation guide rib 1904, the cross-sectional shape, the length, and the like are appropriately determined in consideration of the size and weight of the suction main body 1080. For example, as shown in FIG. 58, the up / down operation guide rib 1903 and the left / right operation guide rib 1904 may be replaced by a separate badge 1905, and the badge 1905 may be appropriately fixed to a hose material with screws or screws. . According to this structure, a similar effect can be obtained by using an existing hose material. In addition, if decoration or color is applied to the badge 1905, the number of models and the design can be improved.

As described above, according to this embodiment, the same effect as that of the above-described embodiment can be obtained with a reduced number of parts and a simple structure. In addition, since the weight can be reduced, it is suitable for a suction body having a simple structure that does not use a rotating brush as shown in FIG. 29 and a suction body of a handy cleaner that needs to be reduced in weight.

(Other Embodiments) FIGS. 59 and 60 show another embodiment relating to the handle at hand. 59 and 60 are conceptual diagrams of the operation.

In FIG. 59, in this embodiment, the connection between the hand handle 310 and the connection pipe 410 is attached so as to be rotatable in the direction of the central axis Q of the connection pipe 400. (A) is provided with a non-slip grip 411 at the upper end of the connection pipe 400, and (b) is provided with a rotation handle 412 provided at the upper end of the connection pipe 400.

According to this embodiment, by holding the handle portion 301 of the hand handle 310 with one hand and operating the grip 411 or the rotating handle 412 with the other hand, the mouthpiece can be rotated without rotating the hand handle 310. You can rotate your body. In addition, since the handle 310 is not rotated, even if the rotation P2 in the left-right direction X of the mouthpiece is set to 180 degrees or more, there is no trouble in operation.

Next, FIG. 60 shows another embodiment relating to the handle portion of the handle at hand. The hand handle 320 according to this embodiment is formed so as to bend and attach the connection pipe 400 and the suction hose 200, and the handle section is substantially orthogonal to the center axis Q of the connection pipe 400 at the position of the bending section 321. 322 are provided. A wrist holder 323 is provided on the suction hose 200 side behind the handle 322.

According to this embodiment, the handle portion 322 is held by one hand, and the wrist of the held one hand can be stabilized by the wrist holding body 323. Therefore, the twisting operation with the hand handle 320 is easy. In addition, the wrist handle 320 can be operated by an operation centered on the elbow, so that the burden on the wrist can be reduced. In particular, in this embodiment, it is difficult to lift the mouthpiece with one hand because the burden on the wrist is large with the conventional wrist handle. In this embodiment, the wrist is fixed by the wrist holder 323. Therefore, the operation of lifting the mouthpiece around the elbow becomes easy. In addition, if the handle 322 is provided with the infrared transmitter 303, transmission through the ceiling becomes better, and erroneous operations can be reduced.

Next, FIGS. 61 and 62 are external views in which the mouthpiece adopted in the above embodiment is applied to another type of vacuum cleaner, and FIG. 61 is a perspective view of a vacuum cleaner called a stick type. FIG. 62 is an external view of a handy type vacuum cleaner.

[0264] In the above-described embodiment, the description has been given of the vacuum cleaner including the vacuum cleaner main body including wheels, the suction hose, the hand handle, the connection pipe, and the mouthpiece, but the present invention is not limited thereto. Not something. For example, FIGS. 61 and 62 show one example.

In FIG. 61, in this embodiment, a vacuum cleaner main body 150 provided with a blower for sucking dust, and a suction body attached to one longitudinal end of the vacuum cleaner main body 150 and communicating with the blower are provided. 550 and a hand handle 300 attached to the other end of the vacuum cleaner main body 150 in the longitudinal direction, wherein the suction body 550 is provided with a suction port for sucking dust on a bottom surface; The mouthpiece body 1000 is connected to the vacuum cleaner body 150, and the universal connection part 1530 for synchronizing the rotation angle P1 of the hand handle 300 transmitted through the vacuum cleaner body 150 with the rotation angle P2 of the mouthpiece is provided. Have. 151 is a sub handle of the vacuum cleaner main body 150.

The vacuum cleaner shown in FIG. 62 has a vacuum cleaner main body 150 provided with a blower for sucking dust, and is attached to one longitudinal end of the vacuum cleaner main body 150 and communicates with the blower. And a mouthpiece 550. A handle 161 is formed on the other end of the vacuum cleaner body 150 in the longitudinal direction. The suction body 550 includes a suction body 1000 having a suction port for sucking dust on a bottom surface, the suction body 1000 connected to the vacuum cleaner body 150, and a handle 161 of the vacuum cleaner body 150. There is provided a free connecting portion 1530 for synchronizing the rotation angle P1 with the rotation angle P2 of the mouthpiece.

According to the embodiment shown in FIGS. 61 and 62, it is possible to obtain the same effects as those of the above-described embodiment. Although the above embodiment has been described with the suction body 550 not shown in the drawings, any structure may be used as long as the suction body 500, 560, or the like described so far. The operability can be further improved by providing the operating section near the handle 300 or the handle 161.

In addition, the present invention can be applied to a vacuum cleaner or the like called a central cleaner for connecting a suction hose, a hand handle, a connection pipe, and a suction body to a dust conveyance path provided in a house.

Further, in the above-described embodiments, the description has been made mainly of the mouthpiece employing the rotating brush, but the present invention is not limited to this. The driving method of the rotating brush is not limited to the air turbine method.

Further, according to the above-described embodiment, a suction body for a vacuum cleaner capable of efficiently rotating the suction body by the rotation operation of the hand handle, and an electric sweeper equipped with the suction body are provided. Can be provided.

Specifically, a vacuum cleaner main body provided with a blower for sucking dust, a flexible suction hose having one end attached to the vacuum cleaner main body and communicating with the blower, A hand handle attached to the other end of the hose and communicating with the blower, a connecting pipe attached to the hand handle and communicating with the suction hose, and a mouthpiece attached to the connecting pipe and communicating with the connecting pipe. A suction body provided with a suction port for sucking in dust, a suction port for connecting the suction body to the connection pipe, and a rotation angle of a hand handle transmitted through the connection pipe and a suction port. Since the universal joint that synchronizes the rotation angle of the body is provided, the mouthpiece can be rotated efficiently by the rotation of the hand handle.

[0272] Further, by providing a sliding member around the mouthpiece provided with the free connecting portion, the sliding member can be moved along a wall surface or the like. Further, by providing the suction body with a moving means capable of moving in the front, rear, left and right directions, the suction body can be moved in the longitudinal direction. Further, by providing the dust guide means between the suction port and the distal end of the suction body, the space between the suction port and the distal end can be cleaned, so that the cleaning performance at the wall can be improved. Moreover, a sliding member around the mouthpiece or the moving means in the left-right direction is provided with a suction port provided in a longitudinal direction of the mouthpiece or a rotary cleaning body provided in the suction port, and further with a dust guide means. Since the longitudinal direction is used, the cleaning property can be improved. As described above, the mouthpiece can be swung by the twisting operation of the hand handle, and the mouthpiece can be smoothly moved along the wall surface without damaging the wall surface, so that dust on the wall can be efficiently sucked and cleaning performance can be improved. .

[0273] Further, since the free connecting portion is constituted by a plurality of indirect hinge portions, the rotating operation of the hand handle can be directly converted into the rotating operation of the mouthpiece. Further, since the flexible connecting portion is composed of a flexible connecting hose for communicating the suction port main body and the connecting pipe, and a plurality of indirect hinge portions provided so as to wrap the connecting hose, the entire flexible connecting portion is provided. And the connecting hose can be minimized, and the connecting hose can be protected by an indirect hinge.

[0274] Further, the free hinge portion is constituted by a first free connection portion and a second free connection, and the first mechanism portion and the second mechanism portion rotate in the X direction. A second rotating shaft that rotates in the Y direction with the suction mechanism; and the second mechanism includes a second rotating shaft that rotates in the Y direction. It is to be attached to the connection pipe. More specifically, the universal connecting portion comprises a first universal connecting portion (upper arm) and a second universal connecting portion (lower arm) rotatably attached by a first indirect hinge. The first universal connecting portion is attached so as to be fixed to the connection pipe, and the second universal connecting portion is connected to the suction main body by a second joint hinge having an axial direction orthogonal to the axial direction of the first joint hinge. The first indirect hinge allows the hand handle to move in the left-right direction, and the second indirect hinge allows the hand handle to move in the height direction. In addition, it is possible to improve the straightness, the movement to the left and right, and the turning performance.

By setting the operation range of the first indirect hinge (first rotation shaft) to a range of 180 degrees or more, it is possible to improve the cleaning performance of a narrow clearance. In addition, by setting the operation range of the second joint hinge (second rotation axis) to 90 degrees or more, it is possible to store the handle in the upright position with the hand handle, the connection pipe, and the mouthpiece connected. Further, the mouthpiece can be turned to 90 degrees or more by a combination of the operation ranges of the first and second indirect hinges.

Further, by setting the length of the free connecting portion to be equal to or larger than the diameter of the allowable bending arc of the suction hose, the turning performance of the suction body can be improved. Further, by connecting the free connecting portion composed of the plurality of indirect hinge portions by pulling the free end thereof with a pulling member such as a connecting hose or the like, it is possible to improve the straightness and the turning property.

Further, by providing a posture holding mechanism (locking mechanism) for holding a predetermined angle at the indirect hinge portion of the universal connecting portion composed of the plurality of indirect hinge portions, it is possible to improve the straightness and maintain the posture. Can be. Furthermore, if the posture holding mechanism is provided in the indirect hinge part that enables rotation in the left-right direction, straightness can be improved.

Further, by attaching the free connecting portion to one side in the short side direction of the mouthpiece main body, the overall thickness can be reduced. Furthermore, with the mouthpiece swiveled 90 degrees, the free connecting part is attached to the upper surface of the mouthpiece body so that it does not protrude from the projected area of the mouthpiece, thereby reducing the installation area of the mouthpiece and improving the cleaning performance of the gap. Can be improved. Moreover, it is possible to improve the storing property and the packing property.

[0279] Further, by providing the self-connecting portion so that the center of gravity of the suction main body is positioned substantially on the extension of the connection pipe, the turning performance of the suction body can be improved.

A dust suction port for sucking dust is provided on the bottom surface of the mouthpiece main body, and dust is sucked into at least a front portion of the bottom surface (a bottom end portion at a position facing the short direction where the free connecting portion is attached). By providing a guide means for guiding dust to the suction port, for example, a member having a small coefficient of friction such as a brush or a groove, it is possible to improve the cleaning performance near the wall.

By providing a sliding member such as a brush material, a tire, or a wheel on at least a circumferential side of the suction main body at a position facing the short direction to which the free connecting portion is attached, the suction body is provided along a wall surface or the like. Can be moved, and damage to the wall surface or the like can be reduced.

Further, by providing a moving means such as a wheel or a protrusion having a low friction coefficient having excellent mobility in the left-right direction in addition to the front-back direction on the bottom surface, the straightness, the left-right direction, and the rotation of the mouthpiece can be improved. Can be improved. In particular, the above effect can be further improved by arranging the moving means around the position of the center of gravity of the mouthpiece main body or the vicinity on a substantially extended line of the connection pipe. In addition, if the moving means is provided behind the attachment position of the universal connecting portion, it is possible to reduce the floating of the distal end portion of the mouthpiece, thereby improving the traveling effect.

[0283] Also, a suction main body formed by disposing the upper body in a lower case having a suction port on a lower surface thereof, a rotary cleaning body disposed in a suction port of the suction main body, A driving means for driving the rotary cleaning body, a second universal connecting portion provided with a casing having a suction passage provided at a rear portion of the suction opening main body, and a second universal connecting portion provided behind the second universal connecting portion. A second universal connecting portion provided with a connecting pipe joint at a rear end, and a suction body having a flexible suction hose communicating the rear end of the casing and the connecting pipe joint. The suction hose is disposed inside the first universal connection part and the second universal connection part, and the second universal connection part is supported by the suction body on both sides of the second universal connection part. The first free connecting portion is mounted to be swingable in the vertical direction through the An air turbine mechanism is provided at the rear portion of the connecting portion so as to be swingable in the left-right direction via a first hinge having a rotation axis direction orthogonal to the rotation axis direction of the second hinge. An excellent compact mouthpiece can be provided.

[0284] Further, the mouthpiece comprises a mouthpiece body provided with a suction port for sucking dust, and a free connection portion, and the free connection portion is connected directly or indirectly to a handle at hand. A connection hose having one end connected to the suction main body and the other end connected to the connection part to form a dust conveyance passage; and a connection part connecting the connection part and the suction main body. By providing the rotation angle of the handle and the rotation angle of the mouthpiece transmitted through the universal hinge portion to synchronize the rotation angle of the mouthpiece, it is possible to provide a mouthpiece with a compact hinge portion and excellent turning performance.

At this time, the universal hinge is connected to a first Y-shaped body provided on the suction body, a second Y-shaped body attached to the connection joint, the first Y-shaped body and the second Y-shaped body. By making the rotation axis orthogonal to the Y-shape and connecting the two Y-shapes to each other so as to be rotatable about the intersection of the Y-shape, it is possible to reduce the size of the hinge part having excellent turning characteristics. be able to.

[0286] Further, the mouthpiece comprises a mouthpiece main body and a universal connection part, and the universal connection part is rotatably attached to the mouthpiece main body, and has a cylindrical lower arm part enabling rotation in a vertical direction. One end is attached to the connection pipe, and the other end is composed of the lower arm and a cylindrical upper arm attached to enable rotation in the left-right direction. The lower arm and the upper arm are freely movable. By configuring the connecting portions to communicate in the operation range, the number of components can be reduced, and the turning performance can be improved with a simple structure.

[0287] The mouthpiece comprises a mouthpiece main body, and a free connection hose having one end connected to the suction port body and a connection portion attached to the other end for connection to a connection pipe. The concave and convex portions are formed of a hose body that is alternately continuous in the pipe direction, and vertical movement guide means are provided on both sides on the mounting side of the suction body, and the connecting portion side is orthogonal to the mounting position of the vertical movement guide means. By providing the left and right operation guide means in the upper and lower parts, the hose body is prevented from being twisted, the number of parts is reduced, the weight is reduced, and the turning performance can be improved with a simple structure.

[0288]

[Effect of the invention]

 According to the present invention, the posture (orientation) of the suction body can be easily and easily changed by twisting the handle, and cleaning along a wall or a narrow place can be easily performed. be able to.

Also, the portion of the mouthpiece body other than the portion covered with the rear upper cover can be opened simply by removing the front upper cover, and the rotating brush can be easily removed, improving disassembly and cleaning. be able to. In addition, assembling can be completed simply by attaching the rotating brush and attaching the front upper cover, so that handling and assembling can be improved. In addition, since the attachment of the flexible connecting portion (connecting body) that requires rigidity and airtightness is solved by attaching the rear upper cover, the number of parts can be reduced and the assembling property can be improved.

[0290] Further, a pair of overhangs are provided at the rear part of the suction port in the suction body, and wheels planted with hairs are disposed on the pair of overhangs. Regardless of the orientation, traveling can be performed smoothly and lifting of the suction body can be suppressed.

In general, it is possible to provide electric cleaning in which the operability of cleaning is improved and the assemblability and disassembly of the mouthpiece are improved.

[Brief description of the drawings]

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

FIG. 2 is a structural view of a suction body showing an embodiment of the vacuum cleaner according to the present invention;

FIG. 3 is a cross-sectional view of the planar arrangement of the mouthpiece showing one embodiment of the vacuum cleaner according to the present invention.

FIG. 4 is a cross-sectional view of the side arrangement of the mouthpiece showing the embodiment of the vacuum cleaner according to the present invention;

FIG. 5 is a cross-sectional view of the side arrangement of the mouthpiece showing the embodiment of the vacuum cleaner according to the present invention.

FIG. 6 is an external perspective view of a mouthpiece showing an embodiment of the vacuum cleaner according to the present invention.

FIG. 7 is an external side view of the mouthpiece showing an embodiment of the vacuum cleaner according to the present invention.

FIG. 8 is an external rear view of the mouthpiece showing one embodiment of the electric vacuum cleaner according to the present invention.

FIG. 9 is a bottom view of the mouthpiece showing the embodiment of the vacuum cleaner according to the present invention.

FIG. 10 is a view showing a mechanism of attaching and detaching a front upper cover of the vacuum cleaner according to the embodiment of the present invention;

FIG. 11 is a sectional view of a main part of a sliding member showing an embodiment of the vacuum cleaner according to the present invention.

FIG. 12 is another application explanatory view of the sliding member showing one embodiment of the vacuum cleaner according to the present invention.

FIG. 13 is a mechanism diagram of a retractable wheel showing an embodiment of the vacuum cleaner according to the present invention.

FIG. 14 is a sectional view of another application example of the wheel showing one embodiment of the electric vacuum cleaner according to the present invention.

FIG. 15 is a view of a lock mechanism of a first rotating shaft showing an embodiment of the vacuum cleaner according to the present invention.

FIG. 16 is a structural view of another application example of the first rotating shaft showing an embodiment of the vacuum cleaner according to the present invention.

FIG. 17 is a structural view of another application example of the first rotating shaft showing an embodiment of the vacuum cleaner according to the present invention.

FIG. 18 is a lock mechanism diagram of a second rotary shaft showing the embodiment of the vacuum cleaner according to the present invention.

FIG. 19 is a use state diagram showing an embodiment of the vacuum cleaner according to the present invention.

FIG. 20 is a view illustrating a use state of the vacuum cleaner according to an embodiment of the present invention.

FIG. 21 is a use state diagram showing an embodiment of the vacuum cleaner according to the present invention.

FIG. 22 is a use state diagram showing an embodiment of the vacuum cleaner according to the present invention.

FIG. 23 is a storage state diagram showing an embodiment of the vacuum cleaner according to the present invention.

FIG. 24 is a storage state diagram showing an embodiment of the vacuum cleaner according to the present invention.

FIG. 25 is an operation principle diagram of the mouthpiece showing one embodiment of the electric vacuum cleaner according to the present invention.

FIG. 26 is a cross-sectional view of a mouthpiece showing a second embodiment of the vacuum cleaner according to the present invention.

FIG. 27 is a storage state diagram showing a second embodiment of the vacuum cleaner according to the present invention.

FIG. 28 is an operational principle diagram of a mouthpiece showing a second embodiment of the vacuum cleaner according to the present invention.

FIG. 29 is an external perspective view of the vacuum cleaner showing a third embodiment of the vacuum cleaner according to the present invention.

FIG. 30 is a structural view of a suction body showing a third embodiment of the vacuum cleaner according to the present invention.

FIG. 31 is a cross-sectional view of a planar arrangement of a mouthpiece showing a third embodiment of the vacuum cleaner according to the present invention.

FIG. 32 is a cross-sectional view of the side arrangement of the mouthpiece showing the third embodiment of the vacuum cleaner according to the present invention.

FIG. 33 is an external perspective view of a mouthpiece showing a third embodiment of the vacuum cleaner according to the present invention.

FIG. 34 is an external side view of a mouthpiece showing a third embodiment of the vacuum cleaner according to the present invention.

FIG. 35 is an external rear view of the mouthpiece showing the third embodiment of the vacuum cleaner according to the present invention.

FIG. 36 is a bottom view of the mouthpiece showing the third embodiment of the vacuum cleaner according to the present invention.

FIG. 37 is a sectional view of a main part of a sliding member showing a third embodiment of the vacuum cleaner according to the present invention.

FIG. 38 is an external perspective view of a free connecting portion showing a third embodiment of the vacuum cleaner according to the present invention.

FIG. 39 is a plan view of a universal connecting part showing a third embodiment of the vacuum cleaner according to the present invention.

FIG. 40 is an assembly process diagram of a universal connection part showing a third embodiment of the vacuum cleaner according to the present invention.

FIG. 41 is an explanatory view of an application example of another free connection portion showing the third embodiment of the vacuum cleaner according to the present invention.

FIG. 42 is an operation principle diagram of a mouthpiece showing a third embodiment of the vacuum cleaner according to the present invention.

FIG. 43 is a view showing a use state of the third embodiment of the vacuum cleaner according to the present invention.

FIG. 44 is a view showing the use state of the third embodiment of the vacuum cleaner according to the present invention.

FIG. 45 is a use state diagram showing a third embodiment of the vacuum cleaner according to the present invention.

FIG. 46 is a view showing a use state of the third embodiment of the vacuum cleaner according to the present invention.

FIG. 47 is an external perspective view showing a fourth embodiment of the vacuum cleaner according to the present invention.

FIG. 48 is a component configuration diagram showing a fourth embodiment of the vacuum cleaner according to the present invention.

FIG. 49 is a structural view of a universal hinge showing a fourth embodiment of the vacuum cleaner according to the present invention.

FIG. 50 is an external bottom view showing a fourth embodiment of the vacuum cleaner according to the present invention.

FIG. 51 is a schematic sectional view showing a fourth embodiment of the vacuum cleaner according to the present invention.

FIG. 52 is an explanatory view of a use state showing a fourth embodiment of the vacuum cleaner according to the present invention.

FIG. 53 is a schematic perspective view showing a fifth embodiment of the vacuum cleaner according to the present invention.

FIG. 54 is a schematic sectional view showing a fifth embodiment of the vacuum cleaner according to the present invention.

FIG. 55 is a structural conceptual view showing a sixth embodiment of the vacuum cleaner according to the present invention.

FIG. 56 is a structural conceptual diagram showing a seventh embodiment of the vacuum cleaner according to the present invention.

FIG. 57 is an enlarged view of a universal connecting hose showing a seventh embodiment of the vacuum cleaner according to the present invention.

FIG. 58 is a structural conceptual diagram of another application example showing the seventh embodiment of the vacuum cleaner according to the present invention.

FIG. 59 is a schematic external perspective view of a hand handle showing another embodiment of the vacuum cleaner according to the present invention.

FIG. 60 is a schematic external perspective view of a hand handle showing another embodiment of the electric vacuum cleaner according to the present invention.

FIG. 61 is an external view showing another embodiment of the vacuum cleaner according to the present invention.

FIG. 62 is an external view showing another embodiment of the vacuum cleaner according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner, 100 ... Vacuum cleaner main body, 200 ... Suction hose, 300 ... Hand handle, 301 ... Handle part, 400 ... Connection pipe, 500, 550 ... Suction body, 100
0: suction body, 1001: lower case, 1002: front upper cover, 1003: rear cover, 1005: suction chamber, 1
006: mounting part, 1007: ventilation path, 1010: suction port,
1011 ... rotating brush, 1012 ... turbine, 1016
... Ventilation hole, 1017 ... Viewing window, 1020 ... Thick part, 10
DESCRIPTION OF SYMBOLS 21 ... groove part, 1022 ... opening / closing lever, 1023 ... hand-holding concave part, 1031 ... front upper cover mounting part, 1033 ... bumper part, 1037 ... mounting rib, 1100 ... sliding member, 11
01 ... brush 1101, 1102 ... brush stand, 1103 ... roller, 1200 ... wheel, 1201 ... front wheel, 1202
... rear wheel, 1203 ... rearmost wheel, 1203a ... rearmost wheel, 1210 ... sliding member, 1211 ... rotation axis, 121
2 ... recess, 1213 ... C-cut surface, 1214 ... brush, 1
215: brush stand, 1261: front wheel, 1262: rear wheel, 1263: rear wheel, 1264: haunting wheel, 1
300: guide means, 1302: flat part, 1310: bundle of brushes, 1311: brush row, 1312: flow path, 1313
... brush table, 1314 ... brush, 1315 ... flow path, 1500
... Universal connection part, 1501 ... Connection hose, 1502 ... Universal hinge, 1502a ... Lower arm part, 1502b ... Upper arm part, 1
503: rotating shaft, 1504: rotating shaft, 1505: rotating shaft hole, 1506: pin, 1507 ... connecting portion, 1510, 1
511, 1512, 1513 ... notch, 1516 ... lock mechanism, 1517 ... convex, 1518 ... concave, 1519 ...
Fitting hole, 1520: convex rib, 1521: connecting portion, 153
0: universal connecting portion, 1531: lower arm portion, 1532: upper arm portion, 1533: first rotating shaft, 1534: lock ring, 1535: second rotating shaft portion, 1537: shutter mechanism, 1553: locking mechanism B1 Pipe axis of lower arm, B2 ...
Pipe axis of upper arm, Q: center axis of the connection pipe, P1: twist rotation of hand handle, P2: rotation of suction body, X: rotation in left and right direction, Y: rotation in height direction, V1: left and right of suction body , The moving direction of the mouthpiece in the front-rear direction.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Taku Owada 1-280 Higashi Koigakubo, Kokubunji-shi, Tokyo Inside the Hitachi, Ltd. Design Research Laboratories (72) Inventor Masao Sunagawa 1-1-1 Higashitaga-cho, Hitachi City, Ibaraki Prefecture Hitachi, Ltd.Electrical Equipment Division (72) creator Atsushi Yamaguchi 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Prefecture Hitachi, Ltd.Electrical Equipment Division (72) creator Shigehiko Suzuki Higashitagachi, Hitachi City, Ibaraki Prefecture 1-1 1-1, Hitachi, Ltd.Electrical Equipment Business Division 1-1-1, within the Electric Appliances Division, Hitachi, Ltd.

Claims (4)

[Utility model registration claims] 1. A vacuum cleaner body having means for sucking dust together with an air flow, a flexible hose, a handle having an air passage, a connecting pipe, and a suction port for sucking dust. A vacuum cleaner that sucks dust sucked into the vacuum cleaner through the connection pipe, the handle, and the hose together with the airflow, the vacuum cleaner comprising: The mouthpiece has a mouthpiece body having a length in the left-right direction longer than the length in the depth direction, and a connecting body that connects the mouthpiece body to the connection pipe and forms a ventilation path for guiding dust therein. The connection body includes a first connection portion and a second connection portion, each having a ventilation path formed therein, and connected to each other such that the axial direction of each ventilation path is changeable. The mouthpiece body of the mouthpiece The second connecting part is connected to the connecting pipe, and the first connecting part and the second connecting part are resin molded products forming the ventilation path on the inner surface, and The first connection portion and the second connection portion, which are resin molded products, and the connection pipe are connected by a structure for preventing air from leaking, and the suction main body has a lower portion long in the left-right direction that forms a lower portion of the suction main body. Member, a rear upper suction member and a front upper suction member that cover the upper part of the lower member, and the lower member includes the suction port that is long in the left-right direction for sucking dust, and is provided behind the suction port. There is a portion constituting an air passage leading to the connecting body at the center in the left-right direction, and a pair of overhang portions are formed so as to sandwich a portion constituting the air passage behind the suction port, Planted on a pair of overhangs A furred wheel is provided, the rear upper suction member is attached to an upper rear center of the lower suction member so as to cover an upper portion of the overhang portion of the lower suction member, and the front upper suction member is A rotary brush is detachably attached to the lower suction member so as to cover an upper portion of the suction opening, and a rotating brush is provided along the suction opening in a space formed between the lower suction member and the front upper suction member. An electric vacuum cleaner characterized by being provided. 2. The vacuum cleaner according to claim 1, wherein the second connecting portion is substantially perpendicular to a floor.
Further, the second connecting portion is rotatable in the left-right direction of the suction main body from the substantially vertical state. 3. The electric vacuum cleaner according to claim 1, wherein the front upper suction member has an air inlet for rotating the rotating brush. Vacuum cleaner. 4. The vacuum cleaner according to claim 1, wherein the front upper suction member detachably attached to the lower suction member is located behind and at the center in the left-right direction. An opening / closing lever for detaching the front upper suction member from the lower suction member at respective positions separated from the lower portion by a predetermined distance in the left-right direction.