JP3066369B2 - Vacuum cleaner and its suction body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner having a suction body which allows a user to easily adjust the angle of the suction body by operating a handle at hand, and a vacuum cleaner having the same.
It relates to the mouthpiece .

[0002]

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

[0003] The structure has a first joint attached to be able to swing up and down with both sides in the longitudinal direction of the suction main body as rotation axes, and a bent tubular form, and one end of the first joint is attached to the first joint. It comprises a second joint which is mounted so as to be rotatable in the axial direction, and which is fixedly mounted at the other end to the extension tube.
According to this mouthpiece, by rotating the hand handle, the mouthpiece can be rotated by the angle at which the second joint is bent, generally about 45 degrees. For example,
These structures are disclosed in JP-A-5-245073.

[0004]

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

[0005] However, although the conventional mouthpiece can make the structure of the mouthpiece itself robust, there is a problem in the operability with the handle at hand because the operating range of the mouthpiece itself is limited.

[0006] For example, when cleaning the side of a wall, it is efficient to move the suction body along the wall surface so that the longitudinal direction of the suction body is parallel to the wall surface. However, in the structure of the conventional mouthpiece, since the rotation angle of the joint can be rotated only about 45 degrees even if the hand handle is rotated 90 degrees, the work must be performed in an unreasonable posture or performed with both hands. did not become.

[0007] Further, when cleaning a low gap such as under a softer, the bent joint is stuck and cleaning efficiency as expected cannot be achieved.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vacuum cleaner with good cleaning properties, which can reduce noise and dust, and can rotate a suction main body over a wide range with respect to a floor surface by twisting a hand handle. It is in.

[0009]

In order to achieve the above object, a vacuum cleaner according to the present invention is provided with a vacuum cleaner body having a blower for sucking dust together with an air flow, and a vacuum cleaner for sucking dust into a lower surface. A suction pipe having a suction port, and a connection pipe forming a ventilation path for guiding dust sucked from the suction port to the vacuum cleaner main body. A suction main body having a long length, and a free connecting portion for connecting the suction main body to the connection pipe, wherein the suction main body includes a mounting portion for the free connecting portion formed at the center rear in the left-right direction. The free connecting portion includes a first arm portion and a second arm portion formed in a tubular shape, and one end of the first arm portion has a first rotation center parallel to a left-right direction of the mouthpiece main body. Having a shaft, and connecting the connection pipe to a state substantially perpendicular to a cleaning surface. Ri obtained until connected to the mounting portion via the first rotating portion for rotating the elevation direction, one end of the other end and the second arm portion of the first arm portion, said first
A second rotation center axis that is orthogonal to the rotation center axis of the suction port, and is connected via a second rotation unit that rotates the connection pipe in the left-right direction of the mouthpiece main body, and the other end of the second arm unit Is connected to the connection pipe, and the second rotating part includes the second
A rotation surface orthogonal to a rotation center axis is formed, and the rotation surface is inclined with respect to the cleaning surface so as to descend in a direction toward the suction body in a state where the rotation angle of the connection pipe in the height direction is the smallest . By taking a state and twisting the connection pipe about its axis, the free connecting portion is configured to rotate the suction body on the cleaning surface in response to the twist of the connection pipe. Further, the suction body of the vacuum cleaner according to the present invention includes a suction port for sucking dust on a lower surface,
A suction body whose length in the left-right direction is longer than the length in the depth direction,
A connecting pipe forming an air passage for guiding dust sucked from the suction port to the vacuum cleaner main body, and a free connecting portion for connecting the suction main body; and An attachment portion of the universal connection portion formed rearward is provided, the universal connection portion includes a first arm portion and a second arm portion formed in a tubular shape, and one end of the first arm portion is provided. ,
A first rotation unit having a first rotation center axis parallel to the left-right direction of the mouthpiece main body and rotating the free connection unit in a vertical direction until the universal connection unit can take a state substantially perpendicular to a cleaning surface; The other end of the first arm portion and one end of the second arm portion have a second rotation center axis orthogonal to the first rotation center axis, and are connected to a mounting portion. part of being connected via a second rotating part which rotates toward the horizontal direction of the suction port body, wherein the second rotating portion, the second rotation center axis and a straight
An intersecting rotating surface is formed, and the rotating surface is inclined with respect to the cleaning surface so as to descend in a direction toward the suction port main body in a state where the rotation angle of the free connecting portion in the height direction is the smallest .
It is configured to take a state .

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

(First Embodiment) FIGS. 1 to 17 show a first embodiment according to the present invention. FIG. 1 is an external perspective view of a vacuum cleaner, and FIGS. 2 to 6 are external views of a mouthpiece. 7, FIG. 8, FIG.
Is a cross-sectional view of the mouthpiece, FIG. 9 is a component configuration diagram of the free connection portion, FIG. 10 is an explanatory view of the operation of the mouthpiece, FIGS. 11 to 16 are explanatory views of the hand handle, and FIG. is there.

First, a vacuum cleaner according to the present embodiment will be described with reference to FIG. Reference numeral 1 generally indicates a vacuum cleaner, and a mechanism (not shown) for sucking dust into the dust collection chamber, for example, a vacuum cleaner body 100 having a blower.
And one end is attached to the vacuum cleaner main body 100,
Flexible suction hose 200 communicating with the blower
A hand handle 300 attached to the other end of the suction hose 200 and communicating with the blower; a suction pipe 400 attached to the hand handle 300 and communicating with the suction hose 200; And a suction body 500 communicating with the suction pipe 400.

The main body 100 of the vacuum cleaner includes a dust collecting chamber having a disposable dust bag therein, and a pair of large wheels 101.
And one free wheel 102 can be moved via the suction hose 200. In addition, 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.

Further, an electric conductive line is provided from the hand handle 300 along the suction hose 200, and a signal for controlling the operation of the electric vacuum cleaner through the conductive line, for example, a motor of the blower is provided. The operation of the vacuum cleaner 1 may be controlled by transmitting a signal for controlling the rotation speed.

The suction hose 200 has a function as a transfer passage for transferring dust to the vacuum cleaner main body 100 and a function as a moving pulling unit for moving the vacuum cleaner main body 100. In this embodiment, a belly-shaped flexible hose is employed.

The handle 300 is attached to the suction hose 2.
00 and the connection pipe 400, the operation control of the electric vacuum cleaner main body 100 and the electric vacuum cleaner main body 1
00 and a function of operating the movement of the mouthpiece 500. The hand handle 300
Is detachably connected to the suction hose 200 and is also detachably attached to the connection pipe 400, thereby connecting the suction hose 200 and the connection pipe 400 to form a dust conveyance path. .

Further, the hand handle 300 is provided at the upper end of the connecting pipe 400 in the longitudinal direction of the connecting pipe 400, that is, on the extension of the central axis B2 of the connecting pipe 400, with the central axis B2 at 90 ° or more and 160 ° or less, preferably 100 ° or less. The handle 301 is provided at an angle (α in the drawing) of about 120 degrees to about 120 degrees and a longitudinal direction B4 of the handle 301 substantially coincides with the connection direction of the suction hose 200 and the connection pipe 400. With this handle 301, the main body 100 can be moved via the suction hose 200, and the movement of the suction body 500 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. In addition, in this twisting operation, the suction hose 200 is rotatably attached to the hand handle 300 so as to be always positioned below the handle portion 301 by gravity.
Since the suction hose 200 is not pulled up by the twisting operation 01, the burden on the wrist can be reduced.

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. Thereby, the mouthpiece 500 can be rotated by 90 degrees or more on the floor surface (cleaning surface) as described later (P2 in the figure). Further, the rotation of the mouthpiece 500 can be performed relatively easily by the shape of the handle portion 301 described above. The reason for this is that when the handle 301 is twisted by giving an angle (α in the figure) to the handle 301, a rotational moment is generated.

Further, since the handle portion 301 is provided with a rotatable handle cover 307 held by a user, the handle cover 307 can change the angle due to the twisting operation of the handle portion 301. Since it can be absorbed by rotating 301,
The burden on the wrist can be reduced.

An operation unit 30 for operating the vacuum cleaner main body 100 is provided near the handle unit 301.
2 are provided. The operation unit 302 is provided with an infrared transmitting unit 303, which transmits an operation signal from the infrared transmitting unit 303 to the infrared receiving unit 103 provided in the vacuum cleaner main body 100, and supplies power to the vacuum cleaner main body 100. ON, OFF 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 electric wiring on the suction hose 200. Also, the infrared transmitter 30
Since the 3 is provided in two places, the operation signal can be reliably transmitted to the vacuum cleaner main body 100 using the reflection from the ceiling, the wall surface, or the like, so that the malfunction can be reduced.

The connection pipe 400 is connected to the handle 3
00 and the mouthpiece 500 are communicated with each other, and the hand handle 300 and the mouthpiece 500 are fixed at a predetermined position, so that the hand handle 300 moves (moves and rotates).
Is transmitted so as to cause the movement (movement or rotation) of the mouthpiece 500. In this embodiment, by connecting two pipes 401 and 402 having different sizes, the connection pipe 400 is configured to be expandable and contractable so as to be fixed at a predetermined length, and one of the hand handles 300
The mouthpiece 500 is detachably attached to the other end.

The mouthpiece body 500 has a mouthpiece 1004 (see FIG. 6) for sucking dust on its bottom surface.
000, the suction body 1000 is connected to the connection pipe 400, and the bottom surface of the suction body 1000 is always in contact with the floor surface in response to the movement of the hand handle 300 transmitted via the connection pipe 400. And a free connection portion 1500 that communicates with the connection pipe 400 such that an air flow including dust sucked from the suction port main body 1000 is guided to the connection pipe 400.

The mouth main body 1000 has a flat and substantially rectangular shape, and the free connecting portion 1500 is rotatably attached to the center of the upper surface thereof. The universal connecting portion 1500 includes:
A mechanism for rotatably connecting the handlebar 300 in the height direction Y and the left-right direction X around the mouthpiece 500 and transmitting the rotation P1 of the twisting operation of the handlebar 300 directly to the rotation P2 of the mouthpiece body 1000 as it is. It has.

In this embodiment, the universal connecting portion 1500
Is rotatably attached to the suction main body 1000, and is capable of rotating in the vertical direction Y.
And a tubular second arm 1502 having one end attached to the suction tube 400 and the other end attached to the other end of the first arm 1501 so as to enable rotation in the left-right direction X. Is done.

The first arm part 1501 constitutes a first rotating part 1503 whose one end is rotatably mounted in the Y direction which is an elevation angle with respect to the mouthpiece body 1000, and the second arm part 1501 The part 1502 has one end attached to the other end of the first arm 1501 and performs an operation of tilting the hand handle 300 left and right, thereby rotating the mouthpiece body 500 in parallel with the cleaning surface. A second rotating unit 1504 that can rotate in the direction is configured.

The second rotating portion 1504 is provided by tilting the rotating surface F forward by an angle Z from the floor surface in a state where the angle of the height direction Y of the universal connecting portion 1500 is minimized. One end of the first arm 1501 is attached above the inclined rotating surface F (see FIGS. 7 and 8), and the second arm 150 is attached below the rotating surface F.
Two ends are attached.

Although the details will be described later in the present embodiment, according to the vacuum cleaner 1 of the present embodiment, the operation of the rotation P1 of the hand handle 300 is an operation of swinging both wings of the suction body 500. However, in the use state, since the bottom surface of the mouthpiece 500 is supported by the cleaning surface, its movement is restricted. However, since the rotation surface F of the second rotation portion 1504 of the free connection portion 1500 is inclined with respect to the cleaning surface, the rotation P1 of the twisting operation of the hand handle 300 is performed.
Is converted to the rotation of the second rotation unit 1504,
When the handwheel 300 is twisted clockwise in the left-right direction, that is, in the clockwise direction, the rotating portion moves in the rightward direction (a swinging motion to escape).

At this time, in this embodiment, since the first rotating portion 1503 operating in the vertical direction Y is provided, the first rotating portion 1503 keeps the bottom surface of the mouthpiece 500 close to the cleaning surface. , And rotates following the operation of the second rotation unit 1504. The movement of the second rotating part 1504 in the left-right direction X is caused by the movement of the first arm part 150 connected thereto.
1 and is operated so as to swing behind the mouthpiece 500, and is converted into the rotation P2 of the mouthpiece 500. Thereby, in this embodiment, the rotation P1 of the twisting operation of the hand handle 300 can be transmitted as the rotation P2 of the mouthpiece main body 1000.

In particular, a major feature of this embodiment is that the rotating surface F of the second rotating part 1504 is set parallel to the central axis B of the connecting pipe 400 and the first rotating part 1
In the operation range of 503, the posture always tilts with respect to the cleaning surface. Therefore, in the operation range of the first rotating unit 1503, the rotation P2 of the mouthpiece 500 can be controlled by the rotation P1 of the twisting operation of the hand handle 300. it can.

In this embodiment, the suction main body 10
The rotation in the X direction of 00 is at least 90 degrees to the right and 90 degrees to the left, that is, 180 degrees in the state of V2 in which the mouthpiece 500 is directly opposed and the hand handle 300 is positioned at the center thereof and is straight forward. Can be performed in the range of The rotation in the Y direction enables the connection pipe 400 to rotate in a range from a position close to horizontal to a position standing upright.

In this embodiment, the inclination angle Z of the rotation surface F is set to 20 degrees, but the same operation can be expected in the range of 10 degrees to 30 degrees. However, when the angle Z is large, the suction body 50 in the state where the angle in the elevation direction Y is small is small.
0 is good, and the suction main body 1000 can be rotated 90 degrees in a small operation range in the height direction Y, but it is difficult to level the connection pipe 400 arranged in parallel with the rotation surface F. Become. Conversely, when the angle Z is small, the state is opposite to that when the angle Z is large. For this reason,
A suitable size of the angle Z may be appropriately determined in consideration of a use state.

Further, the mouthpiece 500 is provided with the mouthpiece main body 10.
Bumper part 1 formed of a slippery material around 00
By providing 100, the wheel 1200 that improves the cleaning performance at the side of the wall and that smoothly moves the suction body 1000 in the longitudinal direction is provided on the bottom surface. Hereinafter, for convenience of description, the moving direction along the longitudinal direction of the mouthpiece 1000 will be described as a left-right direction V1, and the moving direction along the short direction of the mouthpiece 1000 in a direction perpendicular to the left-right direction will be described as V2.

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 weight of the suction hose 200 can be reduced. Is achieved. For this reason, the burden on the handle 300 held by the user can be reduced, and the running of the vacuum cleaner main body 100 and the operation of the mouthpiece 500 can be improved.

In particular, a major feature of this embodiment is that the operation of the mouthpiece 500 via the handle 300, for example, the rotation P1 of the twisting operation of the handle 300 is directly used as the rotation P2 of the mouthpiece 500. For example, the operation performed by the user with the handle 300 can be smoothly performed as the movement of the mouthpiece 500.

Specifically, for example, the hand handle 300
Is twisted 90 degrees (rotation P1), so that the suction body 500
1 is rotated 90 degrees (rotation P2) as shown by the dotted line in FIG.
The floor can be cleaned near the wall while moving back and forth in the direction of. At this time, the bumper section 1100 and the wheel 1200
Thereby, the mouthpiece 500 can be moved smoothly, and the damage to the wall surface can be reduced.

At this time, the suction hose 200 connected to the hand handle 300 has a
Even if it is twisted by 0 degrees, it rotates so as to always be located below, so that the suction hose section 200 does not impair the operability accompanying the twisting operation.

Further, in this embodiment, the rotation P2 of the suction body 500 can be controlled by the hand handle 300 in the operation range in the vertical direction Y, so that the suction body 5 which makes the straightness worse is reduced.
00 can be reduced. In addition, the followability of the mouthpiece 500 is improved by the inclined rotating surface F even when the hand handle 300 is suddenly switched, for example, a sudden right and left twisting operation is performed. The flapping that one side of the direction floats is reduced.

Further, the universal connecting portion 15 according to this embodiment
According to 00, while maintaining the height from the cleaning surface to the first rotating part 1503 to secure a dust flow passage, the dead space located below the first rotating part 1503 can be freely used. Since the second arm 1502 is located below the first arm 1501 with the connecting portion 1500 being substantially horizontal, the overall height of the mouthpiece 500 can be reduced. Thereby, the suction body 10
The mouthpiece 500 can be inserted into a low space such as under a bed, for example, while keeping the bottom surface of the cleaning member 00 in close contact with the cleaning surface. In addition, even when the mouthpiece 500 is inserted under the bed, the mouthpiece 500 does not move left and right, and is excellent in straightness.

Hereinafter, the mouthpiece 500, which is one of the major features of the vacuum cleaner according to the present embodiment, will be described in detail.

First, the external structure of the mouthpiece 500 will be described with reference to FIGS. 3 to 6 based on FIG. 2 is a rear perspective view of the mouthpiece, FIG. 3 is a side view, FIG. 4 is a plan view, FIG. 5 is a front view, and FIG. 6 is a bottom view.

2 to 5, as described above,
The mouthpiece 500 includes a mouthpiece body 1000 and the mouthpiece body 1.
000 and a universal connecting portion 1500 arranged at the center behind.

The mouth main body 1000 is mainly formed in a thin shape having four large corners as viewed from above and a circular arc shape having a central portion at the top as viewed from the side. The cleaning shape is improved by adopting a round shape, and the corners are rounded so that furniture and the like are not damaged.

The suction main body 1000 is connected to the suction main body 10.
00 formed of a resin material forming a skeleton of the lower case 100
1 and an upper cover 1002 formed of a resin material that covers the upper part of the suction main body 1000. The front upper cover 1001 and the lower cover 1002
00, and a bumper 1100 having a convex shape is formed at the mating portion. In this embodiment, as shown in FIG. 7, the bumper 1100 is formed of a separate material, for example, a soft material such as rubber, or a resilient resin material, and is formed of an upper cover 1001 and a lower cover 1002.
It is assembled so that it is sandwiched from above and below, and it is fixed with screws.

The bumper 1100 may be formed integrally with the front upper cover 1001 and assembled so that the lower cover 1002 fits into the bumper 1100, and may be attached with screws (not shown).

On the other hand, as described above, the universal connecting portion 1
The first arm 1501 is connected to the two first arms 1501 and the second arms 1502 by a second rotating part 1504, and the other end of the first arm 1501 is attached to the mounting part 1 of the mouth body 1000.
At 003, a connecting portion 1505 is attached via a first rotating portion 1503 so as to be rotatable in the height direction Y, and the other end of the second arm portion 1502 is attached to the connecting pipe 400.

Here, the mounting portion 1003 is formed in a concave shape behind the center of the upper cover 1001 in the longitudinal direction, and the first rotating portion 1503 is rotated at the top of the circular arc surface which is the concave front portion. A shaft Q1 is provided, and the first arm 1501 is inserted into the concave mounting portion 1003 and is mounted to be rotatable about the rotation shaft Q1.

Further, the free connecting portion 1500 is placed in a state where its posture is substantially parallel to the cleaning surface, and
2 is provided with one end of both parts wrapped so as to be positioned below the first arm 1501, and the wrapped part is provided with a second rotating part 1504 and the rotation of the second rotating part 1504 The surface F is inclined forward with respect to the longitudinal direction R1 of the first arm 1501, and is provided in parallel with the second longitudinal direction R2 (the same direction as the central axis B2). This detailed structure will be described with reference to FIG.

In FIG. 6, a horizontally long rectangular suction port 1004 for sucking dust is provided at the center of the bottom surface of the suction main body 1000.
Are formed, and flexible convex brushes 1005 are arranged in a line before and after the suction port 1004. Further, outside the brush 1005, an air flow containing dust is guided to the suction port by the air suction so that the air flow is reduced. A plurality of convex guide protrusions 1006 for rectifying the flow are provided.

Then, the wheel 1 for properly lifting the suction port 1004 from the cleaning surface to secure the traveling function of the suction body 500.
200 are provided on both sides of the mouth body 1000 before and after. Accordingly, the mouthpiece 500 can be smoothly moved in the front-rear direction V2. At this time, the cleaning surface is brushed by the brush 1005, and thus the dust that has flew up can be efficiently sucked.

Further, since the wheel 1200 is formed of a sliding resin material having an appropriate hardness, the wheel 1200 can be smoothly rotated even when the mouthpiece 500 rotates, and can be moved smoothly in the left-right direction V1. be able to. If the wheel 1200 is shaped like a drum with a bulged center, or a brush or a carpet material is attached to the wheel running surface, the rotation performance can be further improved.

In this embodiment, a plurality of recesses 1101 are formed by cutting out a part of the bumper 1100 formed in a convex shape in the longitudinal direction. Thus, when the tip end portion (front portion of bumper 1100) of mouthpiece 500 is pressed against a wall, concave portion 1 formed in bumper 1100 is formed.
Air can be sucked in from 101. The sucked air is blown in a spot-like manner, and the flow velocity is increased by the plurality of guide projections 1006. Therefore, a portion of the cleaning surface that the brush does not reach, such as a cleaning surface near the wall, is licked by a fast spot-like airflow, and dust is scattered. Can be efficiently inhaled. Further, the sucked air is straightened by the guide projection 1006 and is sucked into the suction port 1004.

As described above, the mouthpiece main body 1 according to the present embodiment.
According to No. 000, the operability of the suction main body 1000 can be improved by the wheel 1200 made of a sliding member, and the guide projection 1006 and the brush 1005 are provided, so that the cleaning efficiency of the floor surface (cleaning surface) is improved. Can be done. In addition, even when the mouth main body 1000 according to the present embodiment is rotated, the operability of the mouth main body 1000 does not decrease because the wheels 1200 are formed by the sliding members.

Further, in this embodiment, the mouthpiece 500
Is rotated by 90 degrees, the free connecting portion 1500 fits within the projected area of the suction main body 1000.
The mouthpiece 500 can be inserted into a gap having a width in the short direction of 000. In addition, in a state where the mouthpiece 500 is rotated by 90 degrees, both longitudinal directions of the mouthpiece body 1000 can be attached to the wall surface, so that the same cleaning can be performed by rotating the mouthpiece 500 clockwise or counterclockwise. Work can be done.

Next, in FIG. 7 to FIG.
Will be described. 7 is a cross-sectional view of the mouthpiece in a state where the angle in the height direction Y is reduced, FIG. 8 is a cross-sectional view of the mouthpiece in a state where the angle in the height direction Y is increased, and FIG. . 7 and 8, the mouthpiece 500 according to this embodiment includes rotation axes Q1 and Q2, and rotation of the mouthpiece body 1000 in the X direction is performed by the second rotating unit 1.
The rotation is performed along the rotation axis Q <b> 1 constituting the first rotation unit 1503 along the rotation axis Q <b> 2 constituting the first rotation unit 1503.

The first arm 1501 and the second arm 1502 are formed in a tubular shape, and rotate so that the openings formed at both ends thereof are always in communication with the openings of other members connected thereto. Mounted as possible.

As shown in FIG. 9, the first arm 1501
Is provided with a first rotating shaft portion 1506 which is provided in a convex shape on both sides of an upper end of an opening portion 1501a formed at one end thereof and forms a rotating shaft Q1, and this first rotating shaft portion 1506 is provided.
Is attached to a first rotating bearing 1007 provided on the upper part of the suction main body 1000 by using resin elasticity to constitute a first rotating part 1503. The first rotating unit 1503
According to the structure described above, the first arm 1501 is rotated from a position close to horizontal to a vertical position while tilting the opening 1501 around the upper part of the opening 1501 provided at one end of the first arm 1501. be able to.

Returning to FIGS. 7 and 8, in this embodiment, a suction port 1004 is provided below the first rotating portion 1503 in order to reduce the size of the suction body 500 and to improve the handleability during V1 running. ing. Therefore, the air flow sucked from the suction port 1004 does not meander greatly, and the free connecting portion 1500 has a large opening area from the dust collection chamber 1008 of the suction main body 1000 from a position close to horizontal to a vertical position, Moreover, in order to make the first arm 1501 communicate with the first arm 1501 so that there is no air leakage, a shutter mechanism is employed in the first rotating unit 1503 in the present embodiment.

Specifically, in this embodiment, the opening 15
Since the lower part of the opening 1501a rotates about the upper end of the first arm part 01a, the lower part of one end of the first arm 1501 having the opening 1501a is formed as a convex arc-shaped part 1507 centered on the rotation axis Q1. The lower portion of the mounting portion 1003 in which the arc-shaped portion 1507 is housed is a similar concave arc-shaped portion 1009. Then, the first arm 1501
A shutter plate 1508 formed of a similar arc is disposed between the arc-shaped portion 1507 and the arc-shaped portion 1009 of the mounting portion 1003 in close contact with each other so that there is no air leakage. Further, the shutter plate 1508 is provided so as to be operable along the circumferential direction around the rotation axis Q1.

Then, the shutter plate 1508 is
As shown in FIG. 8, when the first arm 1501 is in a substantially horizontal position, the first arm 1501 overlaps the arc-shaped portion 1007 of the first arm 1501 and is stored in the mounting portion 1003, and the first arm 1501 shown in FIG. In the vertical state, both ends of the shutter plate 1508 are pulled out while being connected to the mounting portion 1003 and the first arm portion 1501.

According to this structure, the suction body 1000 is
Since it is connected to the first arm 1501 at the center and the top at the top of the upper surface, the suction main body 1000 is hung near its center when lifted up through the connection pipe 400, It can be lifted as it is in the attitude of the suction main body 1000 and the attitude with the bottom surface parallel to the cleaning surface. Thereby, the balance in the aerial posture is improved, and the entire bottom surface can be landed on the cleaning surface even if it is placed again on the cleaning surface, so that the handling is easy. In this embodiment, the opening 1
Since one of the shafts 501a is the rotation axis Q1, the shutter plate 1508 may be provided at one of the openings 1501a, so that the structure can be simplified.

Further, in this embodiment, the first arm 1
When the 501 is in a nearly horizontal posture (horizontal posture), the arc-shaped portion 1507 is housed in the mounting portion 1003 of the suction main body 1000, so that the entire height of the suction body 500 can be reduced. The cleanability of a low gap can be improved.

Next, the other end of the first arm 1501 is arranged such that the peripheral side surfaces of the other end overlap the other end of the second arm 1502, and the second rotating part 1504 is provided in the overlapped portion. Can be Specifically, in the present embodiment, the second rotating unit 1
504 is formed under one end of the first arm 1501 and an opening 1501 at the other end of the first arm 1501.
b, a tubular concave rotating bearing portion 1509, and a tubular protrusion formed above one end of the second arm portion 1502 and forming an opening 1502a on one end side of the second arm portion 1502. A shaft portion 1510, and the rotating shaft portion 1510 is fitted into the rotating bearing portion 1509 to form a rotating shaft Q2.
It is rotatably mounted so that there is no air leakage around the center.

In other words, in the present embodiment, the annular ventilation passage is bent so that one ends of the first arm 1501 and the second arm 1502 are L-shaped, and the bent openings 1501b of both arms are formed. , 1502a are circular and the first
The rotation bearing 150 is inserted into the opening 1501b of the arm 1501.
9 is formed, and the rotation shaft 1510 is formed in the opening 1502 a of the second arm 1502.

Then, by fitting the rotary bearing 1509 and the rotary shaft 1510 together, the two openings 1501b, 151
02a is mounted so as to be rotatable about a rotation axis Q2 which is the center of the circle. The rotary bearing 1509 and the rotary shaft 1510 are fixed by a fixing member 1511 provided over a ring-shaped groove provided on each of the annular sliding surfaces.

According to the structure of the universal connecting portion 1500,
In a state where the universal connecting portion 1500 is in the horizontal posture, the first
The longitudinal direction R1 of the arm 1501 and the second arm 1502
And a longitudinal direction R2 of the second rotating portion 1504 are provided between the two. The rotating surface F
Are provided in parallel with the longitudinal direction R2 of the second arm 1502, that is, the central axis B2 of the connection pipe 400, and the first arm 1
501 is inclined forward with a tilt angle Z from the longitudinal direction R1.

As described above, according to the universal connecting portion 1500 according to the present embodiment, the two rotating portions Q in which the rotating portions are orthogonal to each other are provided.
1, Q2, that is, the first rotating unit 1503 in the height direction Y
And the second rotation unit 1504 in the left-right direction, the rotation P1 of the twisting operation of the hand handle 300 can be directly converted to the rotation P2 of the turning operation of the mouthpiece 500. Moreover, according to the universal connecting portion 1500,
Since the two rotating structures, particularly the second rotating portion 1504, have a simple rotating structure, the manufacturing is easy and the appearance can be made simple without unevenness, so that the design can be improved and the finger can be inserted. Safety measures and cleanability can be improved.

Next, based on FIG.
The movement of the free connecting portion accompanying the operation of 00 will be further described. 10A is a schematic perspective view of the mouthpiece 500 according to the present embodiment as viewed from the rear, and FIG.
The mouthpiece 500a in which the mounting positions of the first arm and the second arm are turned upside down is shown.

FIGS. 9A and 9B show a state in which the hand handle 300 is twisted in a direction opposite to the clockwise direction. For example, in the embodiment shown in FIG.
The operation is performed so that the left side in the longitudinal direction of the suction main body 1000 is shaken downward and the right side is shaken upward. However, in the use state, the bottom surface of the suction main body 1000 is supported by the cleaning surface, so that the operation of swinging the wing is prevented.

However, in this embodiment, the second rotating unit 1
Since the rotation surface F of 504 is inclined with respect to the cleaning surface,
The rotation P1 of the central axis B2 transmitted to the second arm 1502 is caused by the rotation of the second rotation unit 1504 and the rotation of the first arm 1
501 and the second arm 1502 are bent at the second rotating part 1504, and the second rotating part 1504 is moved sideways (U1 direction).
Operate to escape. At this time, the first rotating unit 15
Numeral 03 operates in the U2 direction so as to increase the angle in the vertical direction Y while keeping the bottom surface of the suction main body 1000 in close contact with the cleaning surface, and operates in conjunction with the operation of the second rotating unit 1504. By the operation of the second rotating portion 1504 escaping sideways in the U1 direction, the rear of the mouthpiece 500 operates to swing its hips in the U1 direction, and the rotation P2 of the mouthpiece 500 is performed.

Here, according to the experimental verification, the operation of escaping laterally in the U1 direction of the second rotating part 1504 operates in an arc shape such that it rises upward in the lateral direction.

The size of the arc increases as the inclination angle Z of the rotating surface F decreases, and if the inclination angle Z is 90 degrees, the size of the connecting pipe 400 is reduced without the movement in the U1 direction or reduced. The rotation P1 is directly connected to the rotation P2 of the mouthpiece 400. Further, the mouthpiece 500 according to the present embodiment shown in FIG. 7A can perform the rotation P2 with less rotation P1 than the mouthpiece 500a shown in FIG.

This operation can be explained by, for example, operating the second rotating unit 1504 so as to draw an arc around the rotation center S above it.

According to this, in the present embodiment shown in FIG. 10A, the second arm 1502 is positioned outside the second rotation part 1504 with respect to the rotation center S, that is, the rotation center S.
And the length Z2 of the second arm 1502 is equal to the rotation center S and the second
Is longer than the length Z1 of the rotating part 1504, so that the suction body 500 can be rotated (P2) with a small force.

On the other hand, according to the mouthpiece 500a shown in FIG. 13B, the second arm 1502 is positioned inside the second rotation part 1504 with respect to the rotation center S, that is, the rotation center S and the second rotation
Since the length Z3 of the arm portion 1502 is shorter than the rotation center S and the length Z1 of the second rotating portion 1504, in order to rotate the suction body 500 (P2), it is larger than the suction body 500 shown in FIG. Power is needed.

That is, in the present embodiment shown in FIG. 9A, the rotation P1 of the twisting operation of the hand handle 300 can rotate (P2) the suction body 500 with a smaller force than the embodiment shown in FIG. it can.

In the embodiment shown in FIG.
The height J2 from the cleaning surface of the arm 1502 of the second rotation unit 1
Since the height J1 of the second arm portion 1502, which is the operation source, is closer to the rotation P2 of the suction body 1000 that attempts to rotate the cleaning surface, the hand handle 3
The rotation P1 of the 00 twisting operation can be efficiently and smoothly performed as the rotation (P2) of the suction body 500, and a stable rotation (P2) with a low center of gravity can be obtained.

On the other hand, in the embodiment shown in FIG.
The height J3 from the cleaning surface of the arm 1502 of the second rotation unit 1
Since the height 504 is larger than the height J1 from the cleaning surface, the second arm portion 1502 that is the operation source is far from the rotation P2 of the suction body 1000 that attempts to rotate the cleaning surface.
As compared with the embodiment shown in the figure, the efficiency of setting the rotation P1 of the twisting operation of the hand handle 300 to the rotation P2 of the mouthpiece 500 is reduced. In addition, since the second arm 1502 as an operation source is at a high position, the rotation (P2) of the mouthpiece 500 becomes more unstable than in the embodiment of FIG.

Next, the flow of air containing dust will be described with reference to FIGS. In this embodiment, when the free connection portion 1500 shown in FIG. 7 is in the horizontal position, the airflow sucked from the suction port 1004 is guided to the guide 1010 of the dust collection chamber 1008 and the first arm portion is opened from the opening 1501a. 1501, the crank-shaped second rotating portion 1504
Through the second arm 1502 to the connection pipe 400.

Further, the free connecting portion 1500 shown in FIG.
Is in the vertical position, the airflow sucked from the suction port 1004 is guided by the guide 1010 of the dust collection chamber 1008 and the shutter plate 1.
508 guides the first arm 1 from the opening 1501a.
The air enters the pipe 501, and is guided from the second arm 1502 to the connection pipe 400 via the second rotating part 1504 having a crank shape.
In the state shown in FIG. 7 or FIG. 8, when the second arm 1502 is bent by the second rotating part 1504, the air flow is refracted by the second rotating part 1504 and flows.

As described above, in this embodiment, the dust collecting chamber 1008 of the suction main body 1000 and the universal connecting portion 1500 are connected with a stable opening area regardless of the operating posture of the universal connecting portion 1500. Also, in this embodiment,
Since the rotation surface F is provided so as to be inclined forward with respect to the first arm 1501, a portion 15 of the ventilation path that bends into an L shape that is continuous from the first arm 1501 to the second rotation unit 1504.
Since the angle at which 12 is bent, that is, the rotation axis Q1 and the longitudinal direction R1 of the first arm 1501 can be set to 90 degrees or more, the air resistance can be reduced and the noise can be reduced.

Next, the hand handle according to the present embodiment will be described in detail with reference to FIGS. 11 is an external perspective view of the hand handle, FIG. 12 is an exploded view of the second connecting pipe portion, FIG. 13 is a cross-sectional view of the hand handle, FIG. 14 is a use state diagram of the vacuum cleaner, and FIG. FIG. 16 is an explanatory view of the operation of the hand handle.

In FIG. 11 and FIG.
Reference numeral 00 denotes a handle main body 308 that forms the handle portion 301 and the first connection tube portion 305, and a second connection tube portion 306.

The handle main body 308 has a substantially triangular appearance having a substantially triangular through hole 316 in the center, and one side of the upper part of the triangular shape is connected to the operation switch placement part 3.
08a, the other upper side is a grip arrangement section 308b where the handle section 301 is formed, and the triangular base is a connection pipe arrangement section 408c provided with the first connection pipe section 305. Then, the connection pipe part 400 is connected via the operation switch placement part 308a and the corner 408d of the connection pipe placement part 408c so that the longitudinal direction of the operation switch placement part 308a coincides with the central axis B2 of the connection pipe 400.
To be mounted on

In this embodiment, the operation switch arranging portion 308a, the grip arranging portion 308b, and the connecting tube arranging portion 408c are formed substantially linearly. As a result, in the operation switch disposing portion 308a, the plate-like operation substrate 3
02a (shown in FIG. 13) is improved and the handle cover 307 is rotated in the grip arrangement portion 308b.
Is improved, and the rotation space of the second connection pipe portion 306 is secured in the connection pipe arrangement portion 350c.

According to this structure, the connecting pipe 400 and the first connecting pipe section 304 can be connected at a gentle angle where noise is less likely to occur, and the upper part of the connecting pipe section 304 is provided to the user. An easy-to-hold grip (handle portion 301) is positioned on the central axis B2 of the connection pipe 400 at an easy-to-grip angle, and further, by utilizing a space (operation switch arrangement portion 308a) associated with the arrangement of the handle portion 301. The operation unit 302 can be arranged at a position with good operability. This makes it possible to realize the handle 300 in a compact form having excellent internal mounting efficiency, high strength, and excellent operability.

In particular, in this embodiment, the first connecting pipe portion 305 and the second connecting pipe portion 306 rotating around the first connecting pipe portion 305 are connected to each other by the first connecting pipe portion 305. It is necessary to provide a large opening 317 on the peripheral side surface of the connecting pipe disposing portion 408c having the portion 305. Insufficient strength of the connecting pipe disposing portion 408c due to the installation of the large opening 317 can be solved by connecting the connecting pipe disposing portion 408c and the grip disposing portion 308b.

In this embodiment, the operation switch arranging portion 308a and the grip arranging portion 308b are formed substantially in a straight line and are connected so as to form a triangular shape. It may be formed in an arch shape. This allows the arch-shaped portion to be a gently bent handle portion, so that the user can hold a portion at an arbitrary angle, so that the holding ability can be improved.

The handle main body 308 has main body covers 309a and 309b which are formed symmetrically with resin.
An operation switch cover 310 and a handle cover 307 rotatably attached to the handle portion 301 are provided. The body covers 309a and 309b are joined by a dividing line 311 with the operation switch cover 310 interposed therebetween, and attached with screws (not shown).

On the other hand, the second connecting pipe portion 306
It comprises a connecting pipe main body 312 and a second connecting pipe cover 313, and the first connecting pipe section 305 of the handle main body 308 is sandwiched between the second connecting pipe main body 312 and the second connecting pipe cover 313. Mounted on. In this attachment, the attachment rib 314a provided on the second connection pipe cover 313 is attached to the rib attachment portion 314b provided inside the second connection pipe main body 312, and is attached via a screw from outside. By making the second connecting pipe portion 306 detachable, dust stuck in the connecting pipe 304 can be easily removed.

The second connecting pipe main body 312 is provided with a hose connecting part 315, and one end of the suction hose part 200 is detachably attached. This attachment / detachment structure has a structure in which a protrusion 201 a provided on the connection portion 201 of the suction hose 200 is connected by fitting into a connection hole 315 a of the hose connection portion 315. To remove, use the connection hole 3
The protrusion 201a fitted to 15a can be removed by pushing in with a screwdriver or the like to release the fit.

The connecting portion 20 of the suction hose 200
Reference numeral 1 is attached to the suction hose 200 so as to be rotatable in the axial direction B3 so that the twist of the suction hose 200 does not affect the handle 300 at hand.

Reference numeral 318 denotes a battery cover for attaching and detaching a battery incorporated in the handle 300 at hand, and 303 denotes an operation unit 30
2 is an infrared transmitter provided behind the handle 300.

Next, referring to FIG.
The internal structure of 00 will be mainly described.

In the figure, first, the hand handle 30
0 is the central axis B2 of the connection pipe 400, the pipe axis direction B1 of the connecting pipe section, the pipe axis direction B3 of the suction hose section 200,
It is designed in consideration of the longitudinal direction B4 of the handle portion 301. This will be described based on the use state of FIG.

In FIG. 14, first, in the vacuum cleaner 1 according to the present embodiment, the user holds the hand handle 3 in a standing posture.
By holding 00, the floor can be cleaned by operating the mouthpiece 500 via the connection pipe 400. At this time, the handle 300
A pair of large wheels 1
Since 01 and one universal wheel 102 are provided, cleaning can be performed while moving.

In general, the average height of a Japanese woman is 157 cm. However, when this user tries to clean by naturally moving the mouthpiece 500 through the connecting pipe 400 while holding the handle 300 at hand. Has a handle 30 at hand
If the vertical distance between 0 and the floor is 78 cm or less, cleaning can be performed without placing a burden on hands and arms. The angle is set to the operation range where the user operates most, which is 45 degrees in the vertical direction. If the angle is 45 degrees or more, the hand or arm will be burdened conversely.

12 and 13, in the present embodiment, the angle θ formed by the center axis B2 of the connection pipe 400 with the floor surface is set.
The length of the connection pipe 400 is set so that 4 is 45 degrees. Then, the handle portion 301 of the handle 300 at hand
The angle θ3 formed by the longitudinal direction B4 of the
The degree is set in the range of degrees to 150, so that the handle part 3
The user gripping the connection pipe 400 has an angle of 45 degrees.
In the state of the degree, the movement in the front-back direction can be facilitated.

In this embodiment, the connection pipe 400
The main body of the vacuum cleaner 10 is installed on the floor through the conveying path of the dust lifted to the top of the handle 300 by the user.
In order to make the suction hose portion 200 connected to the hand handle 300 gently continuous to the lowest position of 0, and to be able to swing (the front-rear direction shown in the drawing) around the hand handle 300. , Connecting pipe section 304
The angle θ1 between the tube axis direction B1 and the central axis B2 is changed from 110 degrees to 150 degrees so that the horizontal position is substantially parallel to the floor surface.
In the range of degrees, the tube axis direction B3 of the suction hose 200
The angle θ2 between the connecting pipe portion 304 and the pipe axis direction B1 is 11
It is set in the range of 0 to 150 degrees.

Referring to FIG. 13, in the present embodiment, in order to realize the hand handle 300 in consideration of the actual use, first, the first connection pipe portion 305 is connected to the connection pipe 400.
A connection pipe mounting portion 318 mounted on the central axis B2 of
The second connection pipe part 306 is attached, and the connection pipe 4
The connecting pipe mounting part 318 and the hinge pipe part 319 formed to be bent at an obtuse angle θ1 with respect to the central axis B2 of 00.

Further, the second connection pipe 306 is rotatably mounted so that the suction hose 200 takes an obtuse angle θ2 with respect to the pipe axis direction B1 of the hinge pipe 319. The connection between the connection pipe attachment part 318 and the hinge pipe part 319 is formed into an inner surface shape that is gently continuous, and the rear part of the hinge pipe part 319 is connected to the opening part 317 in a large round shape to form a second connection. Connecting pipe section 30
6 is continued.

As a result, the dust sucked in from the mouthpiece 500 can be connected to the connection pipe 40 while maintaining the swinging operation of the suction hose 200 at the handle 300.
0, the first connecting pipe section 305, the second connecting pipe section 306, and the suction hose section 200, and are transported to the vacuum cleaner main body 100 through a gentle mountain-shaped dust transport path.
Noise or dust clogging from the hand handle 300 and other transport paths can be reduced.

In this embodiment, the connection pipe 400
The switch arrangement part 308a is provided on the central axis B2 of the control board 302, and the operation board 302a and the battery unit 320 for supplying power to the operation board 317 are accommodated therein. And
The upper end of the switch arrangement part 308a and the hinge tube part 3
By providing the grip arrangement portion 308b for coupling the rear portion of the connection pipe arrangement portion 408c provided with the handle portion 19, the handle portion 3
01 in the longitudinal direction B4.

In this embodiment, the grip arrangement section 3
A handle portion 301 is formed by providing a rotatable handle cover 307 at 08b. The handle cover 307 will be further described with reference to FIG. 15A is an expanded view of the handle cover 307, and FIG.
It is sectional drawing of No. 01. In the figure, the handle cover 30
Reference numeral 7 denotes a cylindrical shape formed by half-cylindrical cover pieces 307a and 307b, and is attached to the attachment portion 321 of the grip arrangement portion 308b. When installing, one cover piece 3
07a is attached to the other cover piece 30.
7b is attached to the attachment portion 321 by fitting into a rib receiving portion 322b.

Returning to FIG. 13, according to the handle cover 307 having the above structure, for example, by twisting the central axis B2 of the connecting pipe 400 as shown by an arrow and rotating it, the handle held by the user's hand is rotated. Since the cover 307 can rotate the center axis B2 in the direction opposite to the arrow,
The movement of the wrist accompanying the twisting operation can be absorbed without difficulty. The reverse twisting operation is the same. Thus, the twisting operation can be performed without difficulty according to the human system.

Next, the operation state of the hand handle according to the present embodiment will be further described with reference to FIG. FIG. 16 is a reference view of a use state in which the hand handle 300 is viewed from the rear, and FIG. 16A is a hand handle of the present embodiment in a state where the mouthpiece is straightened. (B) is a diagram showing a state in which the handle portion is rotated, and (c) is a diagram showing a use state of the conventional hand handle.

First, in FIGS. 10A and 10B, when the handle 300 of this embodiment is not twisted as shown in FIG. 10A, the suction hose portion 200 is positioned below the handle 300. positioned. on the other hand,
(B) As shown by the dotted line in the figure, even if the hand handle 300 is twisted 90 degrees to the left and right, the suction hose portion 200 is kept in the second position.
The connecting pipe 306 of the hinge pipe 3 of the first connecting part 305
Because it rotates around 19, it is always located below due to its weight. Thus, in the operation of twisting the hand handle 300, the suction hose section 200 is always kept in the same state, so that the burden on the wrist can be reduced.

Further, in this embodiment, since the handle portion 301 is provided with the rotating handle cover 307, the burden on the wrist can be further reduced.

In this embodiment, the mouthpiece 500
Can be rotated 90 degrees, the handle 30
The rotation operation range of the second connecting pipe portion 306 can be rotated by 90 degrees left and right around the lower position, that is, in a range of 180 degrees in total, so that the suction hose portion 200 is positioned lower even if the 0 is twisted 90 degrees. An opening 317 is formed so that the first connection pipe 305 and the second connection pipe 305 communicate with each other in the above range.

On the other hand, in the conventional example shown in FIG. 11C, the suction hose 200 is pulled upward by twisting the handle 300 by 90 degrees left and right.
With the hand holding the handle 301a, the suction hose 20
A force that tries to pull 0 back down acts in the direction of the arrow. As a result, an unnecessary burden is imposed on the hand of the user holding the handle 300 at hand.

In particular, in the case where a long suction hose section 200 is employed in recent years, the force for pulling back is large. Further, when there is a space between the suction hose section 200 and the vacuum cleaner main body 100, the twisting operation also pulls the vacuum cleaner main body 100, and the burden on the hand increases. In this regard, according to the hand handle 300 of the present embodiment, the problem of the conventional example is solved.

Next, with reference to FIG. 17, the operability when the hand handle 300 is at a low position, which is a major feature of this embodiment, will be described. In FIG. 17, in this embodiment, as described above, the rotation surface F of the second rotation unit 1504 is inclined forward even when the free connection unit 1500 is in a horizontal posture close to horizontal. The rotation of the mouthpiece 500 can be controlled.

In the figure, (a) shows a state in which this low operation state is viewed from above, and (b) shows a state in which it is viewed from the side. According to this embodiment, the floor under the bed or the furniture is low, and is excellent in cleaning the deep floor. For example, according to the present embodiment, as is apparent from the figure, it is possible to lower the hand handle 300 so that the connection pipe 400 is nearly horizontal and can be inserted under a bed or the like. Moreover, in the present embodiment, since the height of the mouthpiece 500 is reduced, it is possible to penetrate the gap having a lower height.

In particular, according to the present embodiment, in the state described above, the rotation P1 of the twisting operation of the hand handle 300 and the rotation P2 of the suction body 500 are interlocked, so that in the cleaning operation that moves back and forth in the V2 direction, the suction body is used. The left and right hand shake of 500 can be held down by the handle 300 at hand,
The suction body 5 is rotated by the rotation P2 of the twisting operation of the hand handle 300.
Since the cleaning operation in the V1 direction is possible by rotating 00, it is possible to improve the cleaning performance of a narrow gap deep in the bed.

Further, according to this embodiment, FIG.
In the state shown in FIG. 7, since the rotation surface F of the second rotation part 1504 is inclined, the connection pipe 400 formed in parallel with the rotation surface F is formed.
Also tilt. Therefore, the hand handle 300 is slightly floated from the cleaning surface, so that the operating range of the handle portion 301 attached to the center axis B2 at an angle is secured. Moreover, in this embodiment, since the suction hose 200 is always hung below the handle 300 at hand, contact of the hung suction hose 200 with the cleaning surface can be reduced.

(Second Embodiment) Next, FIGS.
4 is a mouthpiece 550 according to the second embodiment of the present invention.
It is shown. Here, in the second embodiment, since the structure other than the mouthpiece 550 is common to the first embodiment, the description is omitted. 18 is a rear perspective view of the mouthpiece according to the second embodiment, FIG. 19 is a right side view, FIG. 20 is a plan view, FIG. 21 is a front view, FIG. 22 is a bottom view, FIG.
4 is a sectional view.

The mouthpiece 550 according to the second embodiment
The rotary brush 1050 (FIG.
3, 24) are realized while the overall size is reduced. 18 to 21, a mouthpiece 550 according to the second embodiment includes a mouthpiece body 1000 and a universal connection portion 1500 arranged at the center behind the mouthpiece body 1000.

The mouth body 550 of this embodiment has a thin appearance, the front part of the mouth body 1000 is extended to both sides, and the mounting part 1054 of the free connecting part 1500 arranged at the center of the rear part is extended rearward. It has a "substantially T-shaped" planar shape. The entire upper surface has a round shape as a main shape to improve the cleaning property, and the corners have a round shape so that furniture and the like are not damaged.

Further, the suction main body 1000 is
00, a lower case 105 formed of a resin material forming a skeleton
1, a front upper cover 1052 formed of a resin material that covers the front of the mouth body 1000, and a mouth body 1000
And a rear upper cover 1053 formed of a resin material that covers the rear of the vehicle. The lower case 1051,
A rib (not shown) is formed in the inside thereof, and the rib and the rear upper cover 1053 form the first connecting portion 1500 of the flexible connecting portion 1500.
Of the first rotary unit 150 with one end of the arm 1501
4 is constituted.

Then, on the rear upper cover 1053,
When the universal connection part 1500 is in the horizontal posture, the first arm part 150
A concave mounting portion 1054 for receiving one end portion is formed;
The first rotating part 1504 is provided at the upper end of the front part of the mounting part 1054. The lower case 1051 and the front upper cover 1052 constitute a dust collecting chamber 1055 (FIGS. 23 and 24), and a rotating brush 1050 is built in the dust collecting chamber 1055. Further, the front upper cover 1052 is provided with an air inlet 105 for rotating the rotating brush 1050.
6 are formed on both rear sides in the longitudinal direction.

The front upper cover 1052 and the lower cover 10
Numeral 51 is fitted on the peripheral side of the mouthpiece main body 1000, and a convex bumper 1100 is formed at the fitting portion. In addition,
In this embodiment, since the suction main body 1000 is “substantially T-shaped”, the concave portion 1101 is formed at the front of the bumper 1100.
Is formed.

On the other hand, the free connecting portion 1500 connects the two tubular first arm portions 1501 and the second arm portion 1502 with the second rotating portion 1504, and the other end of the first arm portion 1501. Is attached to the attachment portion 1054 of the mouthpiece main body 1000 so as to be rotatable in the height direction Y, and the other end of the second arm portion 1502 is attached to the connection pipe 400.
5 is assumed.

Here, the mounting portion 1054 sandwiches the first arm portion 1501 from both sides between two support members 1054a and 1054b projecting rearward.
Note that the structure of the flexible connection portion 1500 is the same as that of the first embodiment, and a description thereof will be omitted.

In FIG. 22, a horizontally-long rectangular suction port 100 for sucking dust is provided at the center of the bottom surface of the suction main body 1000.
4 are formed, and flexible convex brushes 1005 are arranged in a line in front of the suction port 1004.
A plurality of convex guide protrusions 1006 are provided in front of the suction port 1004 to guide the air flow containing dust and to straighten the air flow. On the other hand, behind the suction port 1004, a convex keeper 1 for repelling dust not completely absorbed by the suction port 1004 and returning the dust to the suction port 1004.
057 is provided.

Then, the suction port 1004 is appropriately lifted from the cleaning surface, and the convex brush 1005 and the keeper 105 are lifted.
Wheels 1200 are provided to improve the efficiency of 57 and to secure the traveling function of mouthpiece 500. In this embodiment, the wheel 1200 is attached to the small wheels 1210 arranged on both sides of the front portion of the mouthpiece body 1000 and the mounting portion 105.
4, a large wheel 1211 provided at the rear end of the mouthpiece main body 1000 at a position below the free connection portion 1500 and supported by two support members 1054a and 1054b projecting rearward. ing. Also in this embodiment, a process of sliding the wheel 1200 sideways is performed as in the first embodiment.

According to this embodiment, the hand handle 30
0, since the load transmitted via the connection pipe 400 can be supported by the large wheels 1211 located below the free connection portion 1500, the traveling performance and the turning performance can be improved.

In FIGS. 23 and 24, the suction body 550 according to this embodiment is provided with the free connection portion 1500 employing the same shutter mechanism as in the first embodiment. Does not meander largely, and the free connecting portion 1500 extends from a position close to horizontal to a vertical position from the dust collecting chamber 100 of the suction body 1000.
8 can be communicated with a large opening area, and the rotation P1 of the twisting operation of the hand handle 300 can be performed.
Thus, rotation P2 of mouthpiece 550 can be performed.

In particular, the major feature of this embodiment is that the universal connecting portion 1500 is arranged behind the mouthpiece body 1000 provided with the rotating brush 1050 while having the same structure as that of the first embodiment. Accordingly, the height of the mouthpiece 550 is reduced. In addition, in the present embodiment, since the rotation axis Q1 of the first rotating unit is provided at the top of the suction body 550, the rotating operation of the universal connection unit 1500 can be performed at a low position. The rotation P2 can be performed stably and smoothly.

A detailed description of the structure of this embodiment is given in the first section.
The description is omitted by attaching the same reference numerals as those of the embodiment.

As described above, in the first and second embodiments, the rotation axis Q1 is provided at the upper end of the opening 1501a of the first arm 1501. However, the rotation axis Q1 is rotated on both sides at the center of the opening 1501b. The axis Q1 may be provided and the shutter plate 1508 may be provided up and down.

In this embodiment, the suction hose 200 is attached to the handle 300 so as to be swingable in the left-right direction. However, the suction hose 200 may be fixed. Further, the hand handle 300 is attached to the handle portion 30.
1 are provided independently, but a structure in which the upper end of the connection pipe 400 is bent and the suction hose 200 is directly connected to the bent end may be used. In this case, an effect similar to that of the handle portion 301 can be obtained by manually supporting the bent tube portion as a handle portion.

[0132]

According to the present invention, noise and dust can be reduced, and the suction main body can be rotated by twisting the handle at hand, so that the user of the vacuum cleaner performs cleaning in a comfortable posture. As a result, it is possible to improve the cleaning performance of the low gap and improve the operability of the vacuum cleaner.

[Brief description of the drawings]

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

FIG. 2 is a perspective view of a mouthpiece showing the first embodiment of the vacuum cleaner according to the present invention.

FIG. 3 is a side view of the mouthpiece showing the first embodiment of the vacuum cleaner according to the present invention.

FIG. 4 is a plan view of the mouthpiece showing the first embodiment of the vacuum cleaner according to the present invention.

FIG. 5 is a front view of the mouthpiece showing the first embodiment of the vacuum cleaner according to the present invention.

FIG. 6 is a bottom view of the mouthpiece showing the first embodiment of the vacuum cleaner according to the present invention.

FIG. 7 is a cross-sectional view of the mouthpiece showing the first embodiment of the vacuum cleaner according to the present invention.

FIG. 8 is a cross-sectional view of the mouthpiece showing the first embodiment of the vacuum cleaner according to the present invention.

FIG. 9 is an exploded perspective view of a freely connecting portion of the mouthpiece showing the first embodiment of the vacuum cleaner according to the present invention.

FIG. 10 is an operation explanatory view of the mouthpiece showing the first embodiment of the vacuum cleaner according to the present invention.

FIG. 11 is an external view of a hand handle showing the first embodiment of the vacuum cleaner according to the present invention.

FIG. 12 is a partially exploded view of a hand handle showing the first embodiment of the vacuum cleaner according to the present invention.

FIG. 13 is a cross-sectional view of a hand handle showing the first embodiment of the vacuum cleaner according to the present invention.

FIG. 14 is a use state diagram of the first embodiment of the vacuum cleaner according to the present invention.

FIG. 15 is a structural view of a handle grip portion showing the first embodiment of the vacuum cleaner according to the present invention.

FIG. 16 is an operation explanatory view of a hand handle showing the first embodiment of the vacuum cleaner according to the present invention.

FIG. 17 is a use state diagram of the first embodiment of the vacuum cleaner according to the present invention.

FIG. 18 is a perspective view of a mouthpiece showing a second embodiment of the vacuum cleaner according to the present invention.

FIG. 19 is a side view of a mouthpiece showing a second embodiment of the vacuum cleaner according to the present invention.

FIG. 20 is a plan view of a mouthpiece showing a second embodiment of the vacuum cleaner according to the present invention.

FIG. 21 is a front view of a mouthpiece showing a second embodiment of the vacuum cleaner according to the present invention.

FIG. 22 is a bottom view of the mouthpiece showing the second embodiment of the vacuum cleaner according to the present invention.

FIG. 23 is a cross-sectional view of a mouthpiece showing a second embodiment of the vacuum cleaner according to the present invention.

FIG. 24 is a cross-sectional view of a mouthpiece showing a second embodiment of the vacuum cleaner according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 100 Vacuum cleaner main body 101 Large wheel 102 Free wheel 103 Infrared light receiving part 200 Suction hose 300 Hand handle 301 Handle part 302 Operation part 303 Infrared transmitting part 400 Connection pipe 401, 402 Tube 500 Suction body 1000 Suction body 1200 Wheel 1500 Freely connecting portion 1501 First arm 1502 Second arm 1503 First rotating portion 1504 Second rotating portion B2 Central axis of connecting pipe F Rotating surface of second rotating portion P1 Twist operation of hand handle Of rotation P2 Rotation of suction body Q1, Q2 Rotation axis X Rotation in left and right direction Y Rotation in height direction Z Angle of inclination of rotation surface

Continuation of the front page (72) Inventor Atsushi Yamaguchi 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Prefecture Within Hitachi, Ltd., Electrical Appliances Division (56) References JP-A-10-258006 (JP, A) JP JP-A-10-137159 (JP, A) JP-A-11-164794 (JP, A) JP-A-55-19143 (JP, A) JP-A-8-289861 (JP, A) JP-A-63-103547 (JP, A) , U) WO 84/3429 (WO, A1) WO 97/13445 (WO, A1) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47L 9/02 A47L 9/24

Claims (8)

(57) [Claims] 1. A vacuum cleaner body provided with a blower for sucking dust together with an air flow, a suction body provided with a suction hole on a lower surface for sucking dust, and a dust cleaner sucking dust from the suction hole. A connection pipe forming an air passage for leading to the main body, wherein the suction body has a length in the left-right direction longer than a length in a depth direction, and a free connecting portion connecting the suction body to the connection pipe. The mouthpiece main body includes a mounting portion of the free connecting portion formed at the center rear in the left-right direction, and the free connecting portion has a first arm portion formed in a tubular shape and a second arm portion.
One end of the first arm portion has a first rotation center axis parallel to the left-right direction of the mouthpiece main body, and takes a state substantially perpendicular to the cleaning surface of the connection pipe. The other end of the first arm portion and one end of the second arm portion are connected to the mounting portion via a first rotating portion that rotates in a height direction until the first rotating center axis is obtained. Having a second orthogonal rotation axis,
It said connection pipe is connected via a second rotating part which rotates toward the horizontal direction of the suction port body, the other end of the second arm portion is connected to the connection pipe, the second rotating part Perpendicular to the second rotation center axis.
That the rotating surface is formed, said plane of rotation, the smallest state rotation angle of the elevation direction of the connecting tube, taking a tilted state with respect to the cleaning surface as down in a direction toward the suction port body, wherein The vacuum cleaner wherein the connection pipe rotates the suction body on a cleaning surface in response to a twist of the connection pipe by twisting the connection pipe about its pipe axis. (2) In claim 1, The rotating surface is provided substantially parallel to a pipe axis of the connection pipe.
A vacuum cleaner. (3) In claim 1 or 2, In the state where the rotation angle in the height direction of the connection pipe is the smallest,
The first arm is Located above the plane of rotation, the second
Characterized in that the arm portion is located below the rotation surface
Vacuum cleaner. (4) The method according to any one of claims 1 to 3,
And The other end side of the first arm portion is at a height of the connection pipe.
Bending downward when viewed with the smallest rotation angle in the direction
A first connecting portion having a tubular shape;
At one end, the rotation angle of the connection pipe in the height direction is the smallest.
The second connecting portion in the form of a tube bent upward when viewed in the
An end of the first connection portion and an end of the second connection portion
And are connected so that they can be rotated and overlapped
The vacuum cleaner characterized by the above. (5) The method according to any one of claims 1 to 3,
And The both ends of the one end are attached to the one end of the first arm.
A protruding rotary shaft is formed in the
The bearing portion of the rotating shaft portion is formed on the attachment portion.
And vacuum cleaner. 6. A suction body having a suction surface for sucking dust on a lower surface, and having a length in the left-right direction longer than a length in a depth direction, and a ventilation passage for guiding the dust sucked from the suction hole to the vacuum cleaner body. A connection pipe for connecting the suction main body to the connection pipe forming the suction pipe, wherein the suction main body includes a mounting part for the free connection part formed at the center rear in the left-right direction thereof; The part includes a first arm part formed in a tubular shape and a second arm part.
One end of the first arm portion has a first rotation center axis parallel to the left-right direction of the mouthpiece main body, and the free connecting portion is substantially perpendicular to a cleaning surface. The other end of the first arm portion and one end of the second arm portion are connected to the mounting portion via a first rotation portion that rotates in a height direction until the rotation can be taken, and the first rotation center axis is Has a second rotation center axis orthogonal to
The second arm is connected via a second rotating part for rotating the second arm toward the left-right direction of the mouthpiece main body, and the second rotating part is perpendicular to the second rotation center axis.
That the rotating surface is formed, said plane of rotation, the smallest state rotation angle of the elevation direction of the universal coupling part, to take a state inclined with respect to the cleaning surface as down in a direction toward the suction port body A mouthpiece for a vacuum cleaner. 7. In claim 6, The rotation surface is provided substantially parallel to a tube axis of the second arm.
An electric vacuum cleaner characterized by being used. Claim 8. In claim 6 or 7, A state in which the rotation angle of the free connecting portion in the height direction is the smallest
The first arm is located above the rotation surface,
The second arm portion is located below the rotation surface.
Vacuum cleaner suction body.