JP3977967B2 - Electric vacuum cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vacuum cleaner provided with a mouthpiece that allows a user to arbitrarily manipulate the angle of the mouthpiece simply by operating a hand handle.
[0002]
[Prior art]
The mouthpiece used in the conventional vacuum cleaner is connected to the hand handle via an extension tube, and the joint structure provided on the mouthpiece by rotating the hand handle about the longitudinal direction of the extension tube as a rotation axis Is attached to be rotatable to some extent.
[0003]
The structure includes a first joint that is attached so as to be swingable in the vertical direction with both longitudinal sides of the mouthpiece body as rotational axes, and a refracted tubular form, one end of which is in the axial direction of the first joint. The second joint is configured to be rotatably mounted and fixed to the extension pipe at the other end.
[0004]
Then, according to this mouthpiece, by rotating the hand handle, the mouthpiece can be rotated at an angle refracted by the second joint, generally about 45 degrees. For example, these structures are disclosed in JP-A-5-245073.
[0005]
[Problems to be solved by the invention]
The suction body of the conventional electric vacuum cleaner is formed based on a horizontally long suction mouth to clean the floor by moving the suction body in the front-rear direction via a hand handle so that the floor surface is efficiently cleaned. And by providing the above-mentioned two joints in order to improve the cleanability of the bottom of the table and the gap, the vertical movement of the hand handle and the mouth sucking body itself are maintained while the mouth sucking body is in close contact with the floor surface by the operation of the hand handle. Rotation is possible.
[0006]
However, although the conventional suction body can make the structure of the suction body itself robust, there is a problem in the operability with the hand handle because the operation range of the suction body itself is limited.
[0007]
For example, when cleaning the wall, it is efficient to move the suction body along the wall surface with the longitudinal direction parallel to the wall surface. However, in the structure of the conventional mouthpiece, the rotation angle of the joint can be rotated only about 45 degrees even if the hand handle is rotated by 90 degrees, so the above work must be performed in an unreasonable posture or with both hands. did not become.
[0008]
Further, in the cleaning of a low gap such as under the softer, the cleaning efficiency as expected because the bent joint is caught cannot be achieved.
[0009]
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 body in a wide range with respect to a floor surface by a twisting operation of a hand handle. .
[0010]
[Means for Solving the Problems]
  In order to achieve the above object, in one invention of a vacuum cleaner according to the present application,
  A vacuum cleaner body having a blower for sucking dust together with an air flow, a suction body having a suction mouth for sucking dust on the lower surface, and a connection forming a ventilation path communicating with the suction mouth and the vacuum cleaner body With a tube,
  The mouthpiece comprises a mouthpiece body having a length in the left-right direction that is longer than the length in the depth direction, and a universal coupling portion that connects the mouthpiece body to the connection pipe,
  The mouthpiece body includes an attachment portion of the universal connection portion formed at the center rear in the left-right direction,
  The universal connection part includes a first arm part and a second arm part formed in a tubular shape,
  One end of the first arm part has a first rotation center axis parallel to the left-right direction of the mouthpiece body, and through a first rotating part that rotates the connecting pipe in the height direction with respect to the cleaning surface. Connected to the mounting part,
  The other end of the first arm portion and the one end of the second arm portion have a second rotation center axis orthogonal to the first rotation center axis, and the connection pipe faces the left-right direction of the mouthpiece body. Connected through a second rotating part that rotates, and the other end of the second arm part is connected to the connecting pipe,
  The second rotating part is formed with a rotating surface orthogonal to the second rotation center axis,
  In a state where the angle of rotation of the connecting pipe in the height direction is the smallest, the rotating surface is inclined with respect to the cleaning surface so as to be lowered in the direction toward the suction body, and above the inclined rotating surface. The other end of the first arm portion is located at one end, and one end of the second arm portion is located below the inclined rotating surface,
  By twisting the connection pipe, the universal coupling portion is configured to rotate the suction mouth body on the cleaning surface in response to the twist of the connection pipe.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0012]
(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, FIGS. 2 to 6 are external views of a mouthpiece, and FIGS. 7 and 8 are mouthpieces. FIG. 9 is a cross-sectional view, FIG. 9 is a component configuration diagram of the universal connecting portion, FIG. 10 is an operation explanatory diagram of the mouthpiece, FIGS. 11 to 16 are explanatory diagrams of the hand handle, and FIG.
[0013]
First, with reference to FIG. 1, the vacuum cleaner which concerns on this embodiment is demonstrated. Reference numeral 1 generally indicates an electric vacuum cleaner, and a vacuum cleaner main body 100 having a mechanism (not shown) for sucking dust into the dust collection chamber, for example, a blower, and one end attached to the electric vacuum cleaner main body 100. A 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, and attached to the hand handle 300 to the suction hose 200. The suction pipe 400 communicates with the suction pipe 400 and is connected to the suction pipe 400 to communicate with the suction body 400.
[0014]
The electric vacuum cleaner main body 100 includes a dust collection chamber having a disposable dust bag inside, and can be moved by a pair of large wheels 101 and one universal wheel 102 via the suction hose 200. The operation control of the electric vacuum cleaner main body 100 is operated in response to an operation signal transmitted from the hand handle 300 by the infrared light receiving unit 103 in the operation display unit provided on the upper surface of the electric vacuum cleaner main body 100.
[0015]
In addition, an electric conductive wire is provided from the hand handle 300 along the suction hose 200, and a signal for controlling the operation of the vacuum cleaner, for example, the rotational speed of the motor provided in the blower is provided via the conductive wire. A signal to be controlled may be transmitted to control the operation of the vacuum cleaner 1.
[0016]
The suction hose 200 has a function as a transport passage for transporting dust to the electric vacuum cleaner main body 100 and a function as a moving pulling means for moving the electric vacuum cleaner main body 100. In this embodiment, a loose flexible hose is employed.
[0017]
The hand handle 300 operates the function of communicating the suction hose 200 and the connecting pipe 400, the operation control of the vacuum cleaner main body 100, the function of moving the vacuum cleaner main body 100, and the movement of the mouthpiece 500. It has a function to do. The hand handle 300 is detachably connected to the suction hose 200, and is also detachably attached to the connection pipe 400, thereby allowing the suction hose 200 and the connection pipe 400 to communicate with each other to provide a dust conveyance path. Forming.
[0018]
Further, the hand handle 300 is 90 degrees or more and 160 degrees or less, preferably 100 degrees to 120 degrees with the central axis B2 at the longitudinal direction of the connection pipe 400, that is, at the upper end on the extension line of the central axis B2 of the connection pipe 400. A handle 301 is provided at a position where the longitudinal direction B4 substantially coincides with the connection direction of the suction hose 200 and the connection pipe 400 with an angle of about 50 degrees (α in the figure). The handle 301 can move the main body 100 of the vacuum cleaner via the suction hose 200, and can further operate the mouthpiece 500.
[0019]
In particular, according to the handle portion 301, the twisting operation, that is, the rotation P1 around the central axis B2 can be easily performed. Moreover, 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 due to gravity. Since the hose 200 is not pulled up, the burden on the wrist can be reduced. At this time, since the handle portion 301 is provided at the upper part, the suction hose 200 provided below does not disturb the twisting operation. Thereby, the suction body 500 can be rotated 90 degrees or more on the floor surface (cleaning surface) as described later (P2 in the figure). Further, the shape of the handle portion 301 described above allows the mouthpiece 500 to be rotated relatively easily. The reason for this is that a rotational moment is generated when the handle portion 301 is twisted by providing an angle (α in the drawing) to the handle portion 301.
[0020]
Further, the handle portion 301 is provided with a handle cover 307 rotatably held by a user, so that the handle cover 307 rotates the handle portion 301 in accordance with a change in angle caused by the twisting operation of the handle portion 301. Since it can absorb by doing, the burden concerning a wrist can be reduced.
[0021]
Further, an operation unit 302 for operating the electric vacuum cleaner main body 100 is provided in the vicinity of the handle unit 301. The operation unit 302 is provided with an infrared transmission unit 303, and an operation signal is transmitted from the infrared transmission unit 303 to the infrared light receiving unit 103 provided in the electric vacuum cleaner main body 100, so that the power source of the electric vacuum cleaner main body 100 is supplied. ON / OFF and various controls can be performed. Since the hand handle 300 is provided with a power supply unit such as a battery (not shown), it is not necessary to perform electrical wiring on the suction hose 200. Further, since the infrared transmitters 303 are provided at two locations, the operation signal can be reliably transmitted to the electric vacuum cleaner main body 100 using reflection from the ceiling, the wall surface, etc., so that malfunctions can be reduced.
[0022]
The connection pipe 400 allows the hand handle 300 and the mouthpiece 500 to communicate with each other, and further fixes the hand handle 300 and the mouthpiece 500 at a predetermined position so that the hand handle 300 moves (moves and moves). (Rotation) is transmitted so that the mouthpiece 500 moves (moves or rotates). In this embodiment, by combining two pipe bodies 401 and 402 having different sizes, the connecting pipe 400 is configured to be stretchable so as to be fixed at a predetermined length, and the hand handle 300 is provided on one side. On the other hand, the mouthpiece 500 is detachably attached.
[0023]
The mouthpiece 500 has a mouthpiece body 1000 having a mouthpiece 1004 (see FIG. 6) for sucking dust on the bottom surface, and the mouthpiece body 1000 is connected to the connecting pipe 400 and transmitted through the connecting pipe 400. In response to the movement of the hand handle 300, the bottom surface of the suction mouth main body 1000 always operates so as to be in contact with the floor surface, and the air flow including dust sucked from the suction mouth main body 1000 is communicated to the connection pipe 400. It is comprised with the universal connection part 1500 which carries out.
[0024]
The mouthpiece main body 1000 has a flat and substantially rectangular shape, and the universal connection portion 1500 is rotatably attached to the center of the upper surface thereof. The universal connecting portion 1500 is connected so as to be rotatable in the height direction Y of the hand handle 300 and the left-right direction X around the mouthpiece 500, and the rotation P1 of the twisting operation of the hand handle 300 is directly used as the mouthpiece body 1000. A mechanism for transmitting to the rotation P2 is provided.
[0025]
In this embodiment, the universal connecting portion 1500 is rotatably attached to the mouthpiece main body 1000 and has a tubular first arm portion 1501 that enables rotation in the height direction Y, and one end attached to the suction pipe 400. The other end is composed of the other end of the first arm portion 1501 and a tubular second arm portion 1502 attached so as to enable rotation in the left-right direction X. The first arm portion 1501 constitutes a first rotating portion 1503 that is rotatably attached in the Y direction, one end of which is an elevation angle with respect to the mouthpiece main body 1000, and the second arm portion 1502 is , One end of which is attached to the other end of the first arm 1501 and tilts the hand handle 300 to the left and right, resulting in rotation in the X direction that rotates the mouthpiece body 500 parallel to the cleaning surface. A possible second rotating part 1504 is configured.
[0026]
In addition, the second rotating part 1504 is provided with its rotating surface F inclined forward by an angle Z from the floor surface in a state where the angle of the height direction Y of the universal connecting part 1500 is minimized. One end of the first arm portion 1501 is attached to the upper side of the inclined rotation surface F (see FIGS. 7 and 8), and one end of the second arm portion 1502 is attached to the lower side of the rotation surface F. Yes.
[0027]
Here, in the present embodiment, details will be described later, but 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 shaking both wings of the mouthpiece 500. In the use state, the bottom surface of the mouthpiece 500 is supported by the cleaning surface, so that its movement is limited. However, since the rotation surface F of the second rotation portion 1504 of the universal coupling portion 1500 is inclined with respect to the cleaning surface, the rotation P1 of the twisting operation of the hand handle 300 is converted into the rotation of the second rotation portion 1504. Then, the second rotating portion operates to move in the left-right direction X, that is, to move leftward if the hand handle 300 is twisted clockwise, and to move rightward if the hand handle 300 is counterclockwise (moved to swing away). .
[0028]
At this time, in this embodiment, since the first rotating portion 1503 that operates in the elevation direction Y is provided, the first rotating portion 1503 keeps the bottom surface of the mouthpiece 500 in close contact with the cleaning surface. The second rotating unit 1504 rotates following the operation. Then, the movement in the left-right direction X of the second rotating part 1504 is converted to rotation P2 of the mouthpiece 500 by operating so as to swing the rear side of the mouthpiece 500 through the first arm 1501 connected thereto. Is done. Thereby, in this embodiment, rotation P1 of the twist operation of the hand handle 300 can be transmitted as rotation P2 of the mouthpiece main body 1000.
[0029]
In particular, the main feature of this embodiment is that the rotation surface F of the second rotating portion 1504 is set parallel to the central axis B of the connecting pipe 400, and in the operating range of the first rotating portion 1503, Since the posture is always inclined with respect to the cleaning surface, the rotation P2 of the suction body 500 can be controlled by the rotation P1 of the twisting operation of the hand handle 300 in the operation range of the first rotation unit 1503.
[0030]
In the present embodiment, the X-direction rotation of the mouthpiece main body 1000 is at least 90 degrees rightward in the state of V2 in which the mouthpiece 500 is directly opposed and the hand handle 300 is positioned in the center. , 90 degrees to the left, that is, in the range of 180 degrees. Further, the rotation in the Y direction enables the connection pipe 400 to rotate in a range from a position near horizontal to a position standing upright.
[0031]
In this embodiment, the inclination angle Z of the rotating 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 operation control of the mouthpiece 500 in a state where the angle Y in the height direction is small is good, and the mouthpiece body 1000 can be rotated 90 degrees in a small motion range in the height direction Y. It becomes difficult to level the connecting pipe 400 arranged in parallel to the rotation surface F. On the contrary, if the angle Z is small, the state is the reverse of the case where the angle Z is large. For this reason, a suitable size of the angle Z may be appropriately determined in consideration of the use state.
[0032]
Further, the mouthpiece 500 is provided with a bumper portion 1100 formed of a slippery material around the mouthpiece main body 1000, thereby improving the cleanability at the wall and smoothing the movement of the mouthpiece 1000 in the longitudinal direction on the bottom surface. A wheel 1200 is provided. Hereinafter, for convenience of explanation, the moving direction along the longitudinal direction of the mouthpiece 1000 will be described as the left-right direction V1, and the moving direction along the short direction of the mouthpiece 1000 in the direction perpendicular to the left-right direction will be described as V2.
[0033]
Thus, according to the vacuum cleaner 1 which concerns on this embodiment, since the operation signal is transmitted via the infrared signal, since it is not necessary to wire to the suction hose 200, weight reduction of the suction hose 200 is achieved. . For this reason, the burden on the hand handle 300 held by the user is reduced, and the running of the vacuum cleaner main body 100 and the operation of the mouthpiece 500 can be improved.
[0034]
In particular, the main feature of this embodiment is that the operation P1 of the mouthpiece 500 through the hand handle 300, for example, the rotation P1 of the twisting operation of the hand handle 300 can be directly used as the rotation P2 of the mouthpiece 500. For example, the operation performed by the user with the hand handle 300 can be smoothly performed as the movement of the mouthpiece 500.
[0035]
Specifically, for example, by twisting the hand handle 300 by 90 degrees (rotation P1), the mouthpiece 500 is rotated by 90 degrees (rotation P2) as shown by the dotted line in FIG. With the operation of moving back and forth, the floor surface near the wall can be cleaned while moving the suction mouth main body 1000 back and forth in the left-right direction V1 along the wall surface. At this time, the suction body 500 can be smoothly moved by the bumper portion 1100 and the wheel 1200, and damage to the wall surface can be reduced.
[0036]
At this time, the suction hose 200 connected to the hand handle 300 rotates so that the hand handle 300 is always positioned downward even when the hand handle 300 is twisted by 90 degrees. Will not be damaged.
[0037]
Further, in this embodiment, since the rotation P2 of the mouthpiece 500 can be controlled by the hand handle 300 in the elevation range Y, the left and right shake of the mouthpiece 500 that deteriorates the straightness can be reduced. Moreover, even if the handwheel 300 is suddenly switched by the inclined rotation surface F, for example, when the left and right twisting operations are switched suddenly, the followability of the mouthpiece 500 is improved. The fluttering that one side of the direction floats is reduced.
[0038]
Further, according to the universal connecting portion 1500 according to this embodiment, the height from the cleaning surface to the first rotating portion 1503 is maintained to ensure a dust flow path, and below the first rotating portion 1503. Since the second arm portion 1502 is positioned below the first arm portion 1501 in a state where the universal connecting portion 1500 is substantially horizontal using the dead space to be positioned, the entire mouthpiece 500 Can be reduced in height. Accordingly, the suction body 500 can be swung into a low-height space such as under the bed while the bottom surface of the suction body 1000 is kept in close contact with the cleaning surface. Moreover, even if the mouthpiece 500 is swung under the bed, the mouthpiece 500 does not shake left and right and is excellent in straightness.
[0039]
Hereinafter, the suction mouth 500 which is one of the big features of the vacuum cleaner according to the present embodiment will be described in detail.
[0040]
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 suction body, 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.
[0041]
2 to 5, as described above, the suction body 500 includes the suction body 1000 and the universal connection portion 1500 disposed at the center of the rear of the suction body 1000.
[0042]
The mouthpiece body 1000 has a thin shape with a large round shape at the four corners as viewed from above, and a shape mainly composed of a round shape with an arc shape having the central portion as the top as seen from the side. In addition to improving cleanability, each corner is rounded so that furniture is not damaged.
[0043]
In addition, the suction body 1000 constitutes a dust collection chamber with a lower case 1001 formed of a resin material that forms the skeleton of the suction body 1000 and an upper cover 1002 formed of a resin material that covers the top of the suction body 1000. The front upper cover 1001 and the lower cover 1002 are combined on the peripheral side of the suction mouth main body 1000, and a convex bumper 1100 is formed at the combined 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 an elastic resin material, and this is formed into an upper cover 1001 and a lower cover 1002. Assemble it from above and below and fix it with screws.
[0044]
The bumper 1100 may be integrally formed with the front upper cover 1001 and assembled so that the lower cover 1002 fits into the bumper 1100 and attached with screws (not shown).
[0045]
On the other hand, as described above, the universal 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 first arm portion 1501 is connected to the first arm portion 1501. A connection for attaching the other end to the attachment portion 1003 of the mouthpiece body 1000 so as to be rotatable in the height direction Y via the first rotation portion 1503 and attaching the other end of the second arm portion 1502 to the connection pipe 400. Part 1505.
[0046]
Here, the mounting portion 1003 is formed in a concave shape at the center rear in the longitudinal direction of the upper cover 1001, and the rotation axis Q1 of the first rotating portion 1503 is at the top of the arcuate surface that is the concave front portion. The first arm portion 1501 is inserted into the concave attachment portion 1003 and attached rotatably on the rotation shaft Q1.
[0047]
In addition, the universal connecting portion 1500 has its both ends wrapped so that the second arm portion 1502 is positioned below the first arm portion 1501 in a state where the posture is substantially parallel to the cleaning surface. The second rotating portion 1504 is provided in the wrapped portion, and the rotation surface F of the second rotating portion 1504 is inclined forward with respect to the longitudinal direction R1 of the first arm portion 1501, and second Is provided in parallel with the longitudinal direction R2 (the same direction as the central axis B2). This detailed structure will be described with reference to FIG.
[0048]
In FIG. 6, a horizontally-long rectangular suction port 1004 for sucking dust is formed in the center of the bottom surface of the suction body 1000, and flexible convex brushes 1005 are arranged in a line in front of and behind the suction port 1004. Further, a plurality of convex guide protrusions 1006 are provided on the outside of the brush 1005 to guide the air flow containing dust to the suction port and rectify the flow of the air flow. And the wheel 1200 which secures the traveling function of the suction body 500 by appropriately floating the suction mouth 1004 from the cleaning surface is provided on the front and rear sides of the suction body 1000. Accordingly, the suction body 500 can be smoothly moved in the front-rear direction V2, and at this time, the cleaning surface can be brushed with the brush 1005, and the dust that has risen thereby can be efficiently sucked.
[0049]
Further, since the wheel 1200 is formed of a slipping resin material having an appropriate hardness, the wheel 1200 can be smoothly rotated in the rotational operation of the mouthpiece 500 and can be smoothly moved in the left-right direction V1. . Note that the rotational performance can be further improved if the wheel 1200 has a drum shape with the center swelled or if a brush or carpet fabric is attached to the wheel running surface.
[0050]
In this embodiment, a plurality of concave portions 1101 are formed by cutting out a part of the bumper 1100 formed in the convex shape in the longitudinal direction. Thereby, when the front-end | tip part (front part of bumper 1100) of the suction body 500 is pressed on the wall, air can be sucked from the recessed part 1101 formed in the said bumper 1100. The sucked air is sprayed in a spot manner, and the flow velocity is increased by the plurality of guide protrusions 1006. Therefore, a portion of the cleaning surface where the brush does not reach, for example, the cleaning surface near the wall is licked by a fast spot-like air current, Can be efficiently inhaled. Further, the sucked air is rectified by the guide protrusion 1006 and sucked into the suction port 1004.
[0051]
Thus, according to the mouthpiece body 1000 according to the present embodiment, the operability of the mouthpiece body 1000 can be improved by the wheel 1200 made of a sliding member, and further, the guide protrusion 1006 and the brush 1005 are provided. The cleaning efficiency of the floor surface (cleaning surface) can be improved. Further, even when the mouthpiece body 1000 according to the present embodiment is rotated, the operability of the mouthpiece body 1000 is not deteriorated because the wheel 1200 is formed by the sliding member.
[0052]
Furthermore, in this embodiment, when the mouthpiece 500 is rotated by 90 degrees, the universal connection portion 1500 is accommodated within the projected area of the mouthpiece body 1000, so that the mouthpiece body is also inserted into the gap in the width direction of the mouthpiece body 1000. 500 can be inserted. In addition, in the state where the mouthpiece 500 is rotated 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 regardless of whether the mouthpiece 500 is rotated clockwise or counterclockwise. Work can be done.
[0053]
Next, the internal structure of the mouthpiece 500 will be described with reference to FIGS. 7 is a sectional view of the mouthpiece in a state where the angle in the height direction Y is reduced, FIG. 8 is a 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 Q <b> 1 and Q <b> 2, and the rotation of the mouthpiece main body 1000 in the X direction is along the rotation axis Q <b> 1 that constitutes the second rotation unit 1504. The rotation of the angle (elevation angle) Y in the elevation direction is performed along the rotation axis Q2 constituting the first rotation unit 1503.
[0054]
The first arm portion 1501 and the second arm portion 1502 are formed in a tubular shape, and both are attached rotatably so that the openings formed at both ends are always in communication with the openings of other members to be connected. It is done.
[0055]
As shown in FIG. 9, the first arm 1501 is provided with a first rotating shaft 1506 that is provided on both sides of the upper end of an opening 1501 a formed at one end thereof to form the rotating shaft Q1. The first rotating shaft portion 1506 is attached to a first rotating bearing portion 1007 provided on the upper portion of the suction mouth main body 1000 by using resin elasticity to constitute a first rotating portion 1503. According to the structure of the first rotating portion 1503, the first arm portion 1501 is nearly horizontal while the opening portion 1501 is inclined with the upper portion of the opening portion 1501 provided at one end of the first arm portion 1501 as the center. It can be rotated from position to vertical position.
[0056]
Here, returning to FIGS. 7 and 8, in this embodiment, the suction port 1004 is provided below the first rotating portion 1503 in order to reduce the size of the suction member 500 and improve the handleability during V1 travel. For this reason, 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 body 1000 from the position close to the horizontal to the vertical position. In addition, in order to communicate with the first arm portion 1501 so that there is no air leakage, a shutter mechanism is employed for the first rotating portion 1503 in this embodiment.
[0057]
Specifically, in this embodiment, since the lower part of the opening 1501a rotates around the upper end of the opening 1501a, the lower part of one end of the first arm 1501 provided with the opening 1501a is connected to the rotation axis Q1. A convex arc-shaped portion 1507 centered at the center is defined, and a lower portion of the mounting portion 1003 in which the arc-shaped portion 1507 is accommodated is defined as a similar concave arc-shaped portion 1009. A shutter plate 1508 formed by a similar arc arranged in close contact with the arc-shaped portion 1507 of the first arm 1501 and the arc-shaped portion 1009 of the mounting portion 1003 so as not to leak air. To be provided. Further, the shutter plate 1508 is provided so as to be operable along the circumferential direction around the rotation axis Q1.
[0058]
As shown in FIG. 7, the shutter plate 1508 is accommodated in the mounting portion 1003 so as to overlap the arcuate portion 1007 of the first arm portion 1501 when the first arm portion 1501 is in a substantially horizontal position. In the state where the first arm portion 1501 shown in FIG. 8 is vertical, both ends of the shutter plate 1508 are pulled out while being connected to the mounting portion 1003 and the first arm portion 1501.
[0059]
According to this structure, the mouthpiece main body 1000 is connected to the first arm portion 1501 at the center and the topmost portion of the upper surface thereof. Is suspended in the vicinity of the center position, and can be lifted as it is in the posture of the suction mouth main body 1000 and the posture with the bottom face parallel to the cleaning surface. Thereby, the balance of the aerial posture becomes good, and even if it is placed again on the cleaning surface, the entire bottom surface can be landed on the cleaning surface, so that handling is easy. In this embodiment, since one of the openings 1501a is the rotation axis Q1, the shutter plate 1508 may be provided on one of the openings 1501a, so that the structure can be simplified.
[0060]
Further, in this embodiment, when the first arm portion 1501 is in a posture (horizontal posture) close to horizontal, the arc-shaped portion 1507 is housed in the attachment portion 1003 of the mouthpiece body 1000, so that the height of the mouthpiece body 500 as a whole is increased. Since the height can be lowered, the cleanability of the gap having a low height can be improved.
[0061]
Next, the other end of the first arm portion 1501 is arranged so that the other end of the second arm portion 1502 and the circumferential surface of each other overlap each other, and a second rotating portion 1504 is provided in the overlapping portion. Specifically, in this embodiment, the second rotating portion 1504 is formed below one end of the first arm portion 1501, and the opening 1501 b on the other end side of the first arm portion 1501 is formed. A tubular and concave rotary bearing portion 1509 to be formed, and a rotary shaft portion formed on the upper side of one end of the second arm portion 1502 and projecting into a tubular shape to form an opening 1502a on one end side of the second arm portion 1502 1510, and the rotary shaft portion 1510 is fitted to the rotary bearing portion 1509 so that the rotary shaft portion Q10 can be rotated around the rotary shaft Q2 so as not to leak air.
[0062]
In other words, in this embodiment, the annular air passage is bent so that one end of the first arm 1501 and the second arm 1502 is L-shaped, and the bent openings 1501b and 1502a of both arms are formed. In addition to the circular shape, a rotary bearing 1509 is formed in the opening 1501 b of the first arm 1501, and a rotary shaft 1510 is formed in the opening 1502 a of the second arm 1502. Then, the rotary bearing portion 1509 and the rotary shaft portion 1510 are fitted together so as to be rotatable about the rotary shaft Q2 that is the circular center of the openings 1501b and 1502a. The rotary bearing portion 1509 and the rotary shaft portion 1510 are fixed by a fixing member 1511 provided across a ring-shaped groove provided on each annular sliding surface.
[0063]
According to the structure of the universal connecting portion 1500, the longitudinal direction R1 of the first arm portion 1501 and the longitudinal direction R2 of the second arm portion 1502 are arranged vertically when the universal connecting portion 1500 is in the horizontal posture. In the meantime, the rotation surface F of the second rotating unit 1504 is provided. The rotation surface F is provided in parallel to the longitudinal direction R2 of the second arm portion 1502, that is, the central axis B2 of the connecting pipe 400, and has a tilt angle Z with respect to the longitudinal direction R1 of the first arm portion 1501. It is provided with an inclination.
[0064]
As described above, according to the universal coupling portion 1500 according to the present embodiment, the two rotating portions Q1 and Q2 that are orthogonal to the rotating portion, that is, the first rotating portion 1503 in the height direction Y and the second rotating portion 1503 in the left-right direction. Since the rotation unit 1504 is provided, 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 simplified without unevenness. Designability can be improved, and safety measures such as pinching fingers and cleanability can be improved.
[0065]
Next, based on FIG. 10, the movement of the universal connecting portion accompanying the operation of the hand handle 300 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. 10B is an upside-down view of the attachment positions of the first arm portion and the second arm portion. The sucked-in mouthpiece 500a is shown.
[0066]
In the state shown in FIGS. 9A and 9B, the hand handle 300 is twisted in the opposite direction to the clockwise direction. For example, in the embodiment shown in FIG. (A), the rotation P1 of the hand handle 300 is transmitted to the universal coupling portion 1500 via the connecting pipe 400, and operates so that the left side in the longitudinal direction of the mouthpiece main body 1000 swings downward and the right side swings upward. Let However, since the bottom surface of the suction mouth main body 1000 is supported by the cleaning surface in use, the operation of shaking the wing is prevented.
[0067]
However, in this embodiment, since the rotation surface F of the second rotating portion 1504 is inclined with respect to the cleaning surface, the rotation P1 of the central axis B2 transmitted to the second arm portion 1502 is the second rotation. The part 1504 is rotated, and the first arm part 1501 and the second arm part 1502 are bent by the second rotating part 1504 so that the second rotating part 1504 escapes to the side (U1 direction). Make it work. At this time, the first rotating unit 1503 operates in the U2 direction so as to increase the angle in the height direction Y while closely contacting the bottom surface of the suction mouth main body 1000 to the cleaning surface, and interlocks with the operation of the second rotating unit 1504. Works. By the operation of the second rotating portion 1504 escaping laterally in the U1 direction, the rear side of the mouthpiece 500 operates so as to shake the hips in the U1 direction, and the mouthpiece 500 is rotated P2.
[0068]
Here, according to the experimental verification, the movement of the second rotating portion 1504 that escapes sideways in the U1 direction moves in an arc shape so as to rise upward in the lateral direction.
[0069]
In addition, the size of the arc increases as the tilt angle Z of the rotation surface F decreases, and if the tilt angle Z is 90 degrees, the rotation P1 of the connecting pipe 400 is reduced with or without the movement in the U1 direction. Directly connected to the rotation P2 of the mouthpiece 400. Further, the mouthpiece 500 according to the present embodiment shown in FIG. 5A can perform the rotation P2 with less rotation P1 than the mouthpiece 500a shown in FIG.
[0070]
This operation can be explained, for example, by the second rotating unit 1504 operating so as to draw an arc around the center of rotation S above it.
[0071]
According to this, in the present embodiment shown in FIG. (A), the second arm portion 1502 is outside the second rotation portion 1504 with respect to the rotation center S, that is, the rotation center S and the second arm portion. Since the length Z2 of 1502 is longer than the rotation center S and the length Z1 of the second rotating portion 1504, the mouthpiece 500 can be rotated (P2) with a small force.
[0072]
On the other hand, according to the mouthpiece 500a shown in FIG. 5B, the second arm portion 1502 is located inside the second rotation portion 1504 with respect to the rotation center S, that is, between the rotation center S and the second arm portion 1502. Since the length Z3 is shorter than the rotation center S and the length Z1 of the second rotating portion 1504, in order to rotate the mouthpiece 500 (P2), a larger force than the mouthpiece 500 shown in FIG. .
[0073]
That is, in the present embodiment shown in (a), the suction body 500 can be rotated (P2) with a small force in the rotation P1 of the twisting operation of the hand handle 300 compared to the embodiment shown in (b).
[0074]
Further, in the embodiment shown in FIG. (A), the height J2 from the cleaning surface of the second arm portion 1502 is smaller than the height J1 from the cleaning surface of the second rotating portion 1504. Since the arm portion 1502 is close to the rotation P2 of the mouthpiece main body 1000 that attempts to rotate the cleaning surface, the rotation P1 of the twisting operation of the hand handle 300 can be efficiently and smoothly changed to the rotation (P2) of the mouthpiece 500. At the same time, a stable rotation (P2) with a low center of gravity is obtained.
[0075]
On the other hand, in the embodiment shown in FIG. 5B, the height J3 from the cleaning surface of the second arm 1502 is larger than the height J1 from the cleaning surface of the second rotating portion 1504. Since the arm portion 1502 is far from the rotation P2 of the mouthpiece main body 1000 that attempts to rotate the cleaning surface, the rotation P1 of the twisting operation of the hand handle 300 is set as the rotation P2 of the mouthpiece 500 according to the embodiment of FIG. Efficiency is reduced. Further, since the second arm 1502 that is the operation source is at a high position, the rotation (P2) of the suction body 500 becomes more unstable than in the embodiment of FIG.
[0076]
Next, the flow of the air flow including dust will be described with reference to FIGS. In this embodiment, when the universal connecting portion 1500 shown in FIG. 7 is in the horizontal posture, the air flow sucked from the suction port 1004 is guided to the guide 1010 of the dust collecting chamber 1008 and is then passed through the opening 1501a to the first arm portion. 1501 enters the connecting pipe 400 from the second arm 1502 through the crank-shaped second rotating portion 1504.
[0077]
In the state where the universal connecting portion 1500 shown in FIG. 8 is in the vertical posture, the air flow sucked from the suction port 1004 is guided by the guide 1010 and the shutter plate 1508 of the dust collecting chamber 1008 and is then opened from the opening portion 1501a to the first arm. It enters the portion 1501 and is guided from the second arm portion 1502 to the connecting pipe 400 through the crank-shaped second rotating portion 1504. In the state of FIG. 7 or FIG. 8, when the second arm 1502 is bent by the second rotating unit 1504, the air flow is refracted and flows by the second rotating unit 1504.
[0078]
Thus, in this embodiment, the dust collection chamber 1008 of the suction mouth main body 1000 and the universal connection portion 1500 are connected with a stable opening area regardless of the operation posture of the universal connection portion 1500. In this embodiment, the rotation surface F is inclined forward with respect to the first arm portion 1501, so that the L-shape is continuous from the first arm portion 1501 to the second rotation portion 1504. The bending angle of the bent air passage portion 1512, that is, the longitudinal direction R1 of the rotation axis Q1 and the first arm portion 1501 can be 90 degrees or more, so that air resistance can be reduced and noise can be reduced.
[0079]
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 usage state diagram of the vacuum cleaner, and FIG. FIG. 16 and FIG. 16 are explanatory views of the operation of the hand handle.
[0080]
11 and 12, the hand handle 300 includes a handle body 301, a handle main body 308 that constitutes the first connecting pipe portion 305, and a second connecting pipe portion 306.
[0081]
The handle main body 308 has a substantially triangular external shape having a substantially triangular through hole 316 in the center, and one side of the upper part of the triangular shape is used as an operation switch arrangement portion 308a, and the other side of the upper part is provided. A grip arrangement portion 308b in which the handle portion 301 is configured is used, and a triangular base is a connection pipe arrangement portion 408c including the first connection pipe portion 305. Then, the connection pipe part 400 is connected via the operation switch arrangement part 308a and the corner part 408d of the connection pipe arrangement part 408c so that the longitudinal direction of the operation switch arrangement part 308a coincides with the central axis B2 of the connection pipe 400. To be installed on.
[0082]
Further, in this embodiment, the operation switch arrangement portion 308a, the grip arrangement portion 308b, and the connecting pipe arrangement portion 408c are formed in a substantially linear shape. This improves the attachment of the plate-like operation board 302a (shown in FIG. 13) in the operation switch arrangement portion 308a, improves the attachment of the rotating handle cover 307 in the grip arrangement portion 308b, and connects the connection pipe arrangement portion 350c. In this case, a rotation space for the second connecting pipe portion 306 is secured.
[0083]
According to this structure, it is possible to connect the connecting pipe 400 and the first connecting pipe part 304 at a gentle angle that is unlikely to generate noise, and it is easy for the user to hold the upper part of the connecting pipe part 304. The grip grip (handle portion 301) is positioned on the central axis B2 of the connection pipe 400 at an angle that allows easy gripping, and the space (operation switch placement portion 308a) associated with the placement of the handle portion 301 is used for operability. The operation unit 302 can be arranged at a good position. As a result, it is possible to realize the hand handle 300 having a compact form excellent in internal mounting efficiency, strong in strength, and excellent in operability.
[0084]
In particular, in this embodiment, in order to connect the first connecting pipe portion 305 and the second connecting pipe portion 306 rotating around the first connecting pipe portion 305, the first connecting pipe portion 305 is provided. It is necessary to provide a large opening 317 on the peripheral side surface of the provided connecting pipe arrangement portion 408c. The lack of strength of the connecting pipe placement portion 408c due to the installation of the large opening 317 can be solved by connecting the connecting pipe placement portion 408c and the grip placement portion 308b.
[0085]
In this embodiment, the operation switch disposition portion 308a and the grip disposition portion 308b are formed in a substantially straight line and are joined so as to form a triangular shape. It may be formed. Thereby, since the arch-shaped part can be a handle part that bends gently, the user can hold the part at an arbitrary angle, and thus the holding ability can be improved.
[0086]
The handle main body 308 includes main body covers 309 a and 309 b that are resin-molded symmetrically, an operation switch cover 310, a handle cover 307 that is rotatably attached to the handle portion 301, and the like. The main body covers 309a and 309b are joined by a dividing line 311 with an operation switch cover 310 interposed therebetween, and are attached by screws (not shown).
[0087]
Meanwhile, the second connecting pipe portion 306 includes a second connecting pipe main body 312 and a second connecting pipe cover 313, and the second connecting pipe main body 312 and the second connecting pipe cover 313 are disposed between the second connecting pipe main body 312 and the second connecting pipe cover 313. The first connecting pipe portion 305 of the handle body 308 is sandwiched and attached. In this attachment, the attachment rib 314a provided on the second connection pipe cover 313 is attached to the rib attachment portion 314b provided on the inner side of the second connection pipe main body 312 and attached from the outside via a screw. By making the second connecting pipe portion 306 removable, dust stuck in the connecting pipe 304 can be easily removed.
[0088]
The second connecting pipe main body 312 is provided with a hose connecting portion 315, and one end of the suction hose portion 200 is detachably attached. This attachment / detachment structure is a structure in which a protrusion 201a provided on the connecting portion 201 of the suction hose 200 is connected by fitting into a connecting hole 315a of the hose connecting portion 315. In the case of removal, the protrusion 201a fitted into the connection hole 315a can be removed by pushing the projection 201a with a screwdriver or the like to remove the fitting.
[0089]
The connecting portion 201 of the suction hose 200 is rotatably attached to the suction hose 200 and its axial direction B3 so that the twist of the suction hose 200 does not affect the hand handle 300.
[0090]
Reference numeral 318 denotes a battery cover for attaching / detaching a battery built in the hand handle 300, and 303 denotes an infrared ray transmitting unit provided behind the hand handle 300 together with the operation unit 302.
[0091]
Next, the internal structure of the hand handle 300 will be mainly described with reference to FIG.
[0092]
In the figure, first, the hand handle 300 includes a central axis B2 of the connection pipe 400, a pipe axis direction B1 of the connecting pipe part, a pipe axis direction B3 of the suction hose part 200, and a longitudinal direction B4 of the handle part 301. It is designed in consideration of. This will be described based on the use state of FIG.
[0093]
In FIG. 14, first, in the vacuum cleaner 1 according to the present embodiment, the user holds the hand handle 300 in a standing posture, thereby operating the mouthpiece 500 through the connection pipe 400 to clean the floor surface. It can be carried out. At this time, since the electric vacuum cleaner main body 100 connected to the hand handle 300 via the suction hose portion 200 is provided with a pair of large wheels 101 and one universal wheel 102, cleaning is performed while moving. Can do.
[0094]
In general, the average height of Japanese women is 157 centimeters, but when this user naturally holds the hand handle 300 and tries to clean it by moving the mouthpiece 500 back and forth through the connecting pipe 400, If the vertical distance between the hand handle 300 and the floor surface is 78 cm or less, cleaning can be performed without placing a burden on the hand or arm. The angle is set to the user's most operated range of 45 degrees in the vertical direction. If it is 45 degrees or more, the hand and arm are conversely burdened.
[0095]
12 and 13, in the present embodiment, the length of the connection pipe 400 is set so that an angle θ4 formed by the central axis B2 of the connection pipe 400 and the floor surface is 45 degrees. Since the angle θ3 formed by the longitudinal direction B4 of the handle portion 301 of the hand handle 300 and the central axis B2 is set in the range of 90 to 150, the user holding the handle portion 301 can connect the connecting pipe 400. The movement in the front-rear direction can be facilitated with the angle of 45 degrees.
[0096]
In the present embodiment, the dust conveyance path lifted up to the topmost portion of the hand handle 300 by the connection pipe 400 is gently continued to the lowest position of the electric vacuum cleaner main body 100 installed on the floor surface, and In order to enable movement of the suction hose part 200 connected to the hand handle 300 to swing around the hand handle 300 (front-rear direction shown in the drawing), the tube axis direction B1 of the connecting pipe part 304 and the center The angle θ1 formed with the axis B2 is set in a range of 110 degrees to 150 degrees so as to be a horizontal position substantially parallel to the floor surface, and the tube axis direction B3 of the suction hose portion 200 and the tube axis direction B1 of the connecting tube portion 304 are Is set in a range of 110 degrees to 150 degrees.
[0097]
In FIG. 13, in this embodiment, in order to realize the hand handle 300 in consideration of the actual use, first, the first connecting pipe portion 305 is attached on the central axis B2 of the connecting pipe 400. A hinge pipe portion 319 formed by bending the connection pipe attachment portion 318 at an obtuse angle θ1 with respect to the central axis B2 of the connection pipe 400. Consists of.
[0098]
Further, the second connecting pipe portion 306 is rotatably attached so that the suction hose portion 200 has an obtuse angle θ2 with respect to the tube axis direction B1 of the hinge pipe portion 319. Then, the connection pipe attachment part 318 and the hinge pipe part 319 are connected to each other in a gently continuous inner surface shape, and the rear part of the hinge pipe part 319 is continuously connected to the opening 317 in a large round shape to form a second It is made to continue to the connecting pipe part 306.
[0099]
As a result, the dust sucked from the suction body 500 maintains the rotating motion of the suction hose part 200 at the hand handle 300 while swinging the connection pipe 400, the first connection pipe part 305, and the second connection pipe. Since it is conveyed to the vacuum cleaner main body 100 via a mountain-shaped gentle dust conveyance path composed of the section 306 and the suction hose section 200, noise generated from the hand handle 300 and other conveyance paths, or dust clogging Can be reduced.
[0100]
In the present embodiment, the switch placement portion 308a is provided on the central axis B2 of the connection pipe 400, and the operation board 302a and the battery part 320 for supplying power to the operation board 317 are housed therein. Then, by providing a grip arrangement part 308b for connecting the upper end of the switch arrangement part 308a and the rear part of the connection pipe arrangement part 408c having the hinge pipe part 319, the angle θ3 in the longitudinal direction B4 of the handle part 301 is determined. is doing.
[0101]
In the present embodiment, the handle portion 301 is configured by providing a rotatable handle cover 307 on the grip placement portion 308b. The handle cover 307 will be further described with reference to FIG. 15A is a development view of the handle cover 307, and FIG. 15B is a cross-sectional view of the handle portion 301. FIG. In the figure, the handle cover 307 is formed of a cylindrical shape with semi-cylindrical cover pieces 307a and 307b, and is attached to the attachment portion 321 of the grip placement portion 308b. At the time of attachment, the attachment rib 322a provided on one cover piece 307a is fitted to the rib receiving portion 322b provided on the other cover piece 307b to be attached to the attachment portion 321.
[0102]
Returning to FIG. 13, according to the handle cover 307 having the above-described structure, for example, the handle cover 307 held in the user's hand is obtained by twisting and rotating the central axis B <b> 2 of the connection pipe 400 as shown by the arrow. Since the central axis B2 can be rotated in the direction opposite to the arrow, the wrist movement accompanying the twisting operation can be absorbed without difficulty. The reverse twisting operation is the same. As a result, the twisting operation can be performed without difficulty according to the human system.
[0103]
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 diagram of the use state of the hand handle 300 as seen from the rear, and FIG. 16 (a) shows the hand handle of the present embodiment in a state where the mouthpiece is straightened. FIG. 4B is a state diagram in which the handle portion is rotated, and FIG. 4C is a state diagram in which the conventional hand handle is used.
[0104]
First, in FIGS. 4A and 4B, the hand handle 300 of the present embodiment is located below the hand handle 300 when the hand handle 300 is not twisted as shown in FIG. Yes. On the other hand, as shown by the dotted line in FIG. 5B, even if the hand handle 300 is twisted 90 degrees to the left and right, the suction hose part 200 has the second connecting pipe part 306 and the hinge pipe part 319 of the first connecting part 305. Because it rotates around, it is always positioned below due to its weight. Thereby, in the operation | movement which twists the hand handle 300, since the suction hose part 200 is always hold | maintained in the same state, the burden concerning a wrist can be reduced.
[0105]
Moreover, in the present embodiment, the handle cover 307 is provided on the handle portion 301, so that the burden on the wrist can be further reduced.
[0106]
In the present embodiment, since the mouthpiece 500 can be rotated by 90 degrees, the second connecting pipe section 306 is arranged so that the suction hose section 200 is positioned below even if the hand handle 300 is twisted by 90 degrees. The rotational operation range is set to be rotatable within a range of 90 degrees to the left and right about the lower position, and a total of 180 degrees. An opening 317 is formed in the upper part.
[0107]
On the other hand, in the conventional example shown in FIG. 10C, the suction hose part 200 is pulled upward by twisting the hand handle 300 90 degrees to the left and right, so that the hand holding the handle part 301a A force for pulling back the portion 200 acts in the direction of the arrow. This imposes an unnecessary burden on the user's hand holding the hand handle 300.
[0108]
In particular, in a case where a long suction hose portion 200 is used in recent years, the force to pull back is large. Moreover, when there exists between the suction hose part 200 and the vacuum cleaner main body 100, it will also pull the vacuum cleaner main body 100 by the said twist operation | movement, and the burden concerning a hand will become large. In this regard, according to the hand handle 300 of the present embodiment, the problem of the conventional example is solved.
[0109]
Next, with reference to FIG. 17, the operability at a position where the hand handle 300 is low, 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 rotating portion 1504 is inclined forward even when the universal connecting portion 1500 is in a horizontal posture close to horizontal. The rotation control of the mouthpiece 500 can be performed.
[0110]
In the figure, (a) shows a state when this low operation state is viewed from above, and (b) shows a state when viewed from the side. According to this embodiment, it is excellent in the cleanability of the floor surface with a low depth, such as under a bed or furniture. For example, according to the present embodiment, as is apparent from the drawing, the hand handle 300 can be lowered so that the connecting pipe 400 is in a state of being almost horizontal and can be cut under the bed or the like. In addition, in the present embodiment, since the height of the mouthpiece 500 is reduced, it can be recessed into a gap having a lower height.
[0111]
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. Therefore, in the cleaning operation that moves back and forth in the V2 direction, Can be suppressed by the hand handle 300, and the suction body 500 can be rotated by the rotation P2 of the hand handle 300 twisting to perform the cleaning operation in the V1 direction. Can do.
[0112]
Further, according to this embodiment, in the state shown in FIG. 17, the rotating surface F of the second rotating portion 1504 is inclined, so that the connecting pipe 400 formed in parallel with the rotating surface F is also inclined. Therefore, since the hand handle 300 is slightly lifted from the cleaning surface, the operating range of the handle portion 301 attached to the central axis B2 is ensured. In addition, in this embodiment, since the suction hose 200 is always suspended from the lower portion of the hand handle 300, it is possible to reduce the contact of the suspended suction hose 200 with the cleaning surface.
[0113]
(Second Embodiment)
Next, FIGS. 18 to 24 show a mouthpiece 550 according to a second embodiment of the present invention. Here, in the second embodiment, since the structure other than the mouthpiece 550 is common to the first embodiment, the description thereof 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, and FIGS. It is.
[0114]
The mouthpiece 550 according to the second embodiment realizes the entire size reduction while adopting a rotating brush 1050 (see FIGS. 23 and 24) in the mouthpiece main body 1000. In FIG. 18 to FIG. 21, the mouthpiece 550 according to the second embodiment includes a mouthpiece main body 1000 and a universal connecting portion 1500 disposed at the center of the rear of the mouthpiece main body 1000.
[0115]
The mouthpiece 550 of the present embodiment has a thin external appearance, the front portion of the mouthpiece main body 1000 projects to both sides, and the mounting portion 1054 of the universal coupling portion 1500 disposed at the center of the rear portion projects to the rear. It has a planar shape of “letter shape”. And while making the whole upper surface into the shape which made the round shape the main thing, while improving cleaning property, considering each corner | angular part into the round shape, it is considered not to damage furniture etc.
[0116]
The mouthpiece body 1000 includes a lower case 1051 formed of a resin material that forms the skeleton of the mouthpiece body 1000, a front upper cover 1052 formed of a resin material that covers the front of the mouthpiece body 1000, and the mouthpiece body 1000. The rear upper cover 1053 is formed of a resin material that covers the rear. The lower case 1051 has a rib (not shown) formed therein, and the rib and the rear upper cover 1053 sandwich one end of the first arm portion 1501 of the universal connecting portion 1500 so that the first rotating portion 1504 is inserted. Constitute.
[0117]
The rear upper cover 1053 is formed with a concave mounting portion 1054 that accommodates the end of the first arm portion 1501 when the universal connecting portion 1500 is in the horizontal posture, and the first rotating portion 1504 is It is provided at the front upper end of the attachment portion 1054. The lower case 1051 and the front upper cover 1052 constitute a dust collection chamber 1055 (FIGS. 23 and 24), and a rotating brush 1050 is built in the dust collection chamber 1055. Further, the front upper cover 1052 has air intakes 1056 for rotating the rotating brush 1050 formed on both rear sides in the longitudinal direction.
[0118]
The front upper cover 1052 and the lower cover 1051 are combined on the peripheral side of the suction mouth main body 1000, and a convex bumper 1100 is formed at the combined portion. In this embodiment, since the mouthpiece main body 1000 is “substantially T-shaped”, a recess 1101 is formed in the front portion of the bumper 1100.
[0119]
On the other hand, the universal connecting portion 1500 connects two tubular first arm portions 1501 and second arm portions 1502 with a second rotating portion 1504, and the other end of the first arm portion 1501 is connected to the suction port. A mounting portion 1054 of the main body 1000 is rotatably mounted in the height direction Y, and the other end of the second arm portion 1502 is used as a connecting portion 1505 for mounting to the connecting pipe 400. Here, the mounting portion 1054 is configured such that the first arm portion 1501 is sandwiched from both sides by two supports 1054a and 1054b projecting rearward. Note that the structure of the universal coupling portion 1500 is the same as that of the first embodiment, and thus description thereof is omitted.
[0120]
In FIG. 22, a horizontally-long rectangular suction port 1004 for sucking dust is formed in the center of the bottom surface of the suction body 1000, and flexible convex brushes 1005 are arranged in a line in front of the suction port 1004. Further, a plurality of convex guide projections 1006 are provided in front of the suction port 1004 to guide the air flow including dust to rectify the air flow. On the other hand, a convex keeper 1057 is provided behind the suction port 1004 for repelling dust that has not been sucked by the suction port 1004 and returning it to the suction port 1004.
[0121]
The suction mouth 1004 is appropriately lifted from the cleaning surface to improve the efficiency of the convex brush 1005 and the keeper 1057, and a wheel 1200 that secures the traveling function of the suction body 500 is provided. In this embodiment, the wheel 1200 is connected to a small wheel 1210 disposed on both sides of the front portion of the mouthpiece main body 1000 and the rear end portion of the mounting portion 1054, that is, the mouthpiece main body 1000 located below the universal connection portion 1500. And a large wheel 1211 that is supported and provided by two supports 1054a and 1054b projecting rearward. Also in this embodiment, a process of sliding the wheel 1200 sideways is performed as in the first embodiment.
[0122]
According to this embodiment, since the load transmitted through the hand handle 300 and the connecting pipe 400 can be supported by the large wheels 1211 positioned below the universal connecting portion 1500, the running performance and turning performance are improved. can do.
[0123]
In FIGS. 23 and 24, the mouthpiece 550 according to this embodiment includes a universal connecting portion 1500 that employs a shutter mechanism similar to that of the first embodiment, so that the airflow sucked from the mouthpiece 1004 is greatly meandering. And the flexible connecting portion 1500 can be communicated with a large opening area from the dust collection chamber 1008 of the suction mouth main body 1000 from a position close to horizontal to a vertical position, and the hand handle 300 can be rotated by twisting operation. The suction body 550 can be rotated P2 by P1.
[0124]
In particular, the main feature of this embodiment is that the universal connection portion 1500 is arranged behind the suction body 1000 having the rotating brush 1050 while taking the same structure as that of the first embodiment. This is because the height of the body 550 is lowered. In addition, in this embodiment, since the rotation shaft Q1 of the first rotating portion is provided at the top of the mouthpiece 550, the rotation of the universal coupling portion 1500 can be performed at a low position. The rotation P2 can be performed stably and smoothly.
[0125]
Note that the detailed structural description of this embodiment is omitted by attaching the same reference numerals as those of the first embodiment.
[0126]
As described above, in the first and second embodiments, the rotation shaft Q1 is provided at the upper end of the opening 1501a of the first arm 1501. However, the rotation shaft Q1 is provided on both sides of the center of the opening 1501b. The shutter plate 1508 may be provided up and down.
[0127]
In this embodiment, the suction hose 200 is attached to the hand handle 300 so as to be swingable in the left-right direction. However, the suction hose 200 may be fixed. Further, the handle 300 is provided with the handle 301 independently, but the upper end of the connection pipe 400 may be bent, and the suction hose 200 may be directly connected to the bent end. In this case, the same effect as the handle portion 301 can be obtained by manually supporting the bent tube portion as a handle portion.
[0128]
【The invention's effect】
According to the present invention, noise and dust clogging can be reduced, and the suction body can be rotated by the twisting operation of the hand handle, so that the user of the vacuum cleaner can perform cleaning in an easy posture and is low. The cleanability of the gap can be improved and the operability of the vacuum cleaner can be improved.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a vacuum cleaner showing a first embodiment of a vacuum cleaner according to the present invention.
FIG. 2 is a perspective view of the mouthpiece showing the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 3 is a side view of the mouthpiece showing the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 4 is a plan view of the mouthpiece showing the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 5 is a front view of the mouthpiece showing the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 6 is a bottom view of the mouthpiece showing the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 7 is a cross-sectional view of the suction body showing the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 8 is a cross-sectional view of the mouthpiece showing the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 9 is an exploded perspective view of the universal connection portion of the mouthpiece showing the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 10 is an operation explanatory view of the suction body showing the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 11 is an external view of a hand handle showing the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 12 is a partially exploded view of a hand handle showing the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 13 is a cross-sectional view of the hand handle showing the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 14 is a diagram showing a usage state of the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 15 is a structural diagram of the handle grip portion showing the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 16 is an operation explanatory view of the hand handle showing the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 17 is a diagram showing a usage state of the first embodiment of the electric vacuum cleaner according to the present invention.
FIG. 18 is a perspective view of a mouthpiece showing a second embodiment of the electric vacuum cleaner according to the present invention.
FIG. 19 is a side view of a mouthpiece showing a second embodiment of the electric vacuum cleaner according to the present invention.
FIG. 20 is a plan view of a mouthpiece showing a second embodiment of the electric vacuum cleaner according to the present invention.
FIG. 21 is a front view of a mouthpiece showing a second embodiment of the electric vacuum cleaner according to the present invention.
FIG. 22 is a bottom view of the mouthpiece showing the second embodiment of the electric vacuum cleaner according to the present invention.
FIG. 23 is a sectional view of a mouthpiece showing a second embodiment of a vacuum cleaner according to the present invention.
FIG. 24 is a cross-sectional view of a mouthpiece showing a second embodiment of a vacuum cleaner according to the present invention.
[Explanation of symbols]
1 vacuum cleaner
100 Vacuum cleaner body
101 large wheels
102 Swivel wheel
103 Infrared detector
200 Suction hose
300 Hand handle
301 Handle part
302 Operation unit
303 Infrared transmitter
400 connecting pipe
401, 402 tube
500 Mouthpiece
1000 mouthpiece body
1200 wheels
1500 Universal connection
1501 First arm
1502 Second arm
1503 1st rotation part
1504 Second rotating part
B2 Center axis of connecting pipe
F Rotating surface of the second rotating part
P1 Twist motion of hand handle rotation
P2 Rotating mouthpiece
Q1, Q2 rotary shaft
X Left / right rotation
Y High and low direction rotation
Z Inclination angle of rotating surface

Claims (2)

A vacuum cleaner body having a blower for sucking dust together with an air flow, a suction body having a suction mouth for sucking dust on the lower surface, and a connection forming a ventilation path communicating with the suction mouth and the vacuum cleaner body With a tube,
The mouthpiece comprises a mouthpiece body having a length in the left-right direction that is longer than the length in the depth direction, and a universal coupling portion that connects the mouthpiece body to the connection pipe,
The mouthpiece body includes an attachment portion of the universal connection portion formed at the center rear in the left-right direction,
The universal connection part includes a first arm part and a second arm part formed in a tubular shape,
One end of the first arm part has a first rotation center axis parallel to the left-right direction of the mouthpiece body, and through a first rotating part that rotates the connecting pipe in the height direction with respect to the cleaning surface. Connected to the mounting part,
The other end of the first arm portion and the one end of the second arm portion have a second rotation center axis orthogonal to the first rotation center axis, and the connection pipe faces the left-right direction of the mouthpiece body. Connected through a second rotating part that rotates, and the other end of the second arm part is connected to the connecting pipe,
The second rotating part is formed with a rotating surface orthogonal to the second rotation center axis,
In a state where the angle of rotation of the connecting pipe in the height direction is the smallest, the rotating surface is inclined with respect to the cleaning surface so as to be lowered in the direction toward the suction body, and above the inclined rotating surface. The other end of the first arm portion is located at one end, and one end of the second arm portion is located below the inclined rotating surface,
The electric vacuum cleaner according to claim 1, wherein the universal connecting portion rotates the suction body on the cleaning surface in response to the twist of the connection pipe by twisting the connection pipe. A vacuum cleaner body having a blower for sucking dust together with an air flow, a suction body having a suction mouth for sucking dust on the lower surface, and a connection forming a ventilation path communicating with the suction mouth and the vacuum cleaner body With a tube,
The mouthpiece comprises a mouthpiece body having a length in the left-right direction that is longer than the length in the depth direction, and a universal coupling portion that connects the mouthpiece body to the connection pipe,
The mouthpiece body includes an attachment portion of the universal connection portion formed at the center rear in the left-right direction,
The universal connection part includes a first arm part and a second arm part formed in a tubular shape,
One end of the first arm part has a first rotation center axis parallel to the left-right direction of the mouthpiece body, and through a first rotating part that rotates the connecting pipe in the height direction with respect to the cleaning surface. Connected to the mounting part,
The other end of the first arm portion and the one end of the second arm portion have a second rotation center axis orthogonal to the first rotation center axis, and the connection pipe faces the left-right direction of the mouthpiece body. Connected through a second rotating part that rotates, and the other end of the second arm part is connected to the connecting pipe,
The second rotating part is formed with a rotating surface orthogonal to the second rotation center axis,
In a state in which the rotation angle of the universal connecting portion in the height direction is the smallest, the rotation surface is inclined with respect to the cleaning surface so as to be lowered in the direction toward the suction body, and above the inclined rotation surface. The other end of the first arm portion is located on the side, the one end of the second arm portion is located on the lower side of the inclined rotating surface, and the connecting pipe is lifted from the cleaning surface,
The electric vacuum cleaner according to claim 1, wherein the universal connecting portion rotates the suction body on the cleaning surface in response to the twist of the connection pipe by twisting the connection pipe.

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