JP3424151B2 - Vacuum cleaner floor nozzle - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor nozzle of an electric vacuum cleaner used in general households.

[0002]

2. Description of the Related Art FIGS.
FIG. 16 shows a first example of a floor nozzle of a conventional electric vacuum cleaner disclosed in Japanese Patent No. 240929, FIG. 16 is a perspective view thereof, FIG. 17 is a bottom view thereof, and FIG. 18 is a floor nozzle for cleaning a carpet. 19 is a side view showing a state where the floor nozzle is cleaning the flooring, and FIG. 20 is a side view showing a state where the floor nozzle is cleaning the flooring by the user. is there.

16 to 20, 1 is a substantially rectangular upper case, 2 is a lower case, which are joined together through a bumper 3 made of a soft material. The nozzle main body 15 is constituted by 3. 4 is an elbow bent in a V shape,
One end is rotatably fitted to the upper and lower cases on a vertical surface,
The other end is fitted to the connection pipe 5. 6 is the lower case 2
Is a front wheel rotatably attached in the same direction as the elbow 4, and is attached so as to secure a certain gap between the lower case 2 and the floor surface.

Reference numeral 7 denotes a suction air passage having a groove formed along the longitudinal direction of the lower case 2 and having an open outer end, which is formed in a substantially straight line from the right end to the left end of the floor nozzle. The suction air passage 7 communicates with the suction port 8 at the central portion, and connects with the dust collection chamber inside the electric vacuum cleaner body 18 through the elbow 4, the connecting pipe 5, and the flexible hose 17 having the hand operation portion 16. Are formed. Further, a lip piece 9 made of a flexible material such as rubber and a brush body 10 in which a bristle brush is planted in a bundle shape are provided behind the suction air passage 7 substantially over the width of the floor nozzle. Body 1
The amount of protrusion from the lower case 2 of 0 can be adjusted by the adjusting body 11. The adjusting body 11 is switched according to the types of the surface to be cleaned, "carpet" and "floor / folding".

In order to clean a carpet using the floor nozzle of the first conventional example, the adjusting body 11 is operated to move the lip piece 9 and the brush body 10 to the state shown in FIG. 18, that is, the lip piece 9 is a lower case. The brush body 10 is housed in the inside of the lower case 2 and protrudes downward from the lower case 2 for a long time. Thus, the waist of the brush body 10 is weakened and largely bent as shown in the figure, and the brush body 10 is sandwiched between the lower case 2 and the carpet, thereby reducing the frictional resistance when the floor nozzle is moved on the carpet. I am trying.

To clean the flooring using the floor nozzle of the first conventional example, the adjusting body 11 is operated to move the lip piece 9 and the brush body 10 to the state shown in FIG. Both the brush bodies 10 are made to project downward from the lower case 2 in a short manner. As a result, the lip piece 9 is elastically contacted with the floor surface, and the rear side of the suction port 8 is closed by the lip piece 9, so that the vacuum degree of the suction port portion is increased and a strong suction airflow is obtained. On the other hand, since the short protruding brush body 10 becomes stiff and can sufficiently support the floor nozzle, a certain gap is secured between the brush body 10 and the front wheel 3 in cooperation with the front wheel 3 and the lower case 2 Prevents scratches on the floor.

After switching the adjusting body 11 according to the type of the surface to be cleaned, the user holds the flexible hose 17 at the operating portion 16 and holds the floor nozzle at the elbow as shown in FIG. Operate back and forth in the same direction as 4 to absorb dust on the floor. Since the longitudinal direction of the floor nozzle is perpendicular to the operation direction and a large cleaning area can be taken, effective cleaning is possible. Since the front wheels 6 rotate in the operating direction, the operation force is light and the front wheels 6 and the brush 10 can move without damaging the floor surface.

[0008] The dust on the floor surface and the dust on the side of the floor nozzle are also sucked up by the front-back movement of the floor nozzle from the suction air passage 7 provided in the full width of the floor nozzle, and the suction port 8,
It is guided to the dust collection chamber of the electric vacuum cleaner body 18 through the elbow 4, the connection pipe 5, and the flexible hose 17.

The brush body 10 provided at the rear of the suction air passage 7 is constructed so as to catch and collect the lint on the carpet, and the width of the brush body 10 is set to be the width of the floor nozzle. There is no leftover lint.

FIG. 21 shows a second floor nozzle of a conventional electric vacuum cleaner disclosed in, for example, Japanese Patent Laid-Open No. 3-195526.
FIG. 3 is a bottom view of the floor nozzle showing the example of FIG.
The same reference numerals are given to the portions corresponding to the conventional example.

In FIG. 21, reference numeral 21 is a spherical caster provided at the left and right ends of the lower case 2 and rotatable 360 degrees. Before and after the suction port 8, feathers 22 arranged so that both ends thereof are spread outward are attached at a height at which the feathers come into contact with the floor surface and slits 23 are provided at a plurality of positions.

In the floor nozzle of the second conventional example, since the spherical casters 21 are freely rotatable by 360 degrees, the floor nozzle can be moved not only in the front-back direction but also in an oblique or lateral direction.
The degree of freedom in operability is high. 22 down
Is in contact with the floor surface, the degree of vacuum of the dust suction portion 24 including the suction port 8 surrounded by the feathers 22 is increased and the dust suction performance is improved. Further, it is possible to absorb dust from the front part of the outer periphery of the floor nozzle through the slit 23 provided in the feather 22.

[0013]

However, in the first conventional example in which the elbow 4 is rotatably fitted to the nozzle body 15 only on the vertical surface, the longitudinal direction of the floor nozzle is horizontal. When cleaning a space narrower than the horizontal width of the floor nozzle, such as a gap between furniture, the floor nozzle does not enter the cleaning surface, and even if the elbow 4 is laid down sideways, the floor nozzle becomes slightly inclined and the width becomes wider. Will be slightly narrower and will not enter the gap. Therefore, it is necessary to remove the floor nozzle from the connection pipe 5 and replace it with the gap nozzle.

Such a problem is caused by, for example, FIG. 22 and FIG.
As shown in FIG. 3, it can be solved by inserting the elbow portion 4A into the nozzle body 15 from the vertical direction and attaching it, and attaching the elbow portion 4A to the nozzle body 15 so as to be able to rotate 90 degrees in the horizontal plane. Because the lip piece 9 and the brush body 10 become parallel to the moving direction of the floor nozzle and act as a shield on the side of the floor nozzle, not only can dust not be sucked near the wall but also lint left on the carpet There is a new problem such as. Further, since the axis of the front wheel 6 is attached at right angles to the normal movement direction of the floor nozzle (used in a horizontally long state), when the nozzle main body 15 is made vertically long (long in the nozzle movement direction) as shown in FIG. There is a problem that not only 6 does not rotate, the operation force becomes heavy, but also the floor surface is scratched by the edge of the front wheel 6. Despite such a problem, examples of an elbow that can be simply adjusted in angle in the horizontal plane with respect to the nozzle body include those disclosed in Japanese Utility Model Publication No. 45-23188 and Japanese Utility Model Publication 42-.
For example, the thing of 18061 publication can be mentioned.

Further, spherical casters 21 which can rotate 360 degrees are provided at the left and right ends of the lower case 2, feathers 22 are arranged in front of and behind the suction port 8, and slits 23 are provided at a plurality of places of one (front) feather 22. In the second conventional example provided,
Similar to the above-mentioned first conventional example, the other (rear) feather 22 acts as a shield, not only cannot absorb dust near the wall, but since the spherical caster 21 has no straightness, it is difficult to operate the floor nozzle. However, there was a problem that the floor nozzle did not move where I thought, and if I tried to move it forcibly, it would put a strain on my wrist.

Further, in the case of a felt or flock that is fixedly installed, there is a problem that the operation force becomes very heavy on the carpet and the floor nozzle does not move.

The technical problem to be solved by the present invention is to make it possible to perform not only the usual cleaning of the floor surface but also the cleaning of a narrow space without changing the floor nozzle, and the operation force can be lightened even if a brush is used. It is in.

[0018]

A floor nozzle of an electric vacuum cleaner according to claim 1 of the present invention has the following configuration. That is, the nozzle body formed with a substantially rectangular upper and lower cases, in floor nozzle of a vacuum cleaner formed by connecting an elbow, a connecting portion between the nozzle body and the elbow, and the horizontal rotation has and elbow car wheel It is provided with a rotating plate that rotates in conjunction with each other.

Further, in the floor nozzle of the electric vacuum cleaner according to the second aspect of the present invention, the rotary plate is provided with a suction port communicating with the elbow.
The wheels are arranged in front of and behind the suction port.

Further, the floor nozzle of the vacuum cleaner according to the third aspect of the present invention is such that the brush is provided on the rotating plate .

According to a fourth aspect of the present invention, there is provided a floor nozzle of an electric vacuum cleaner , wherein a suction port of the lower case is provided on a lower surface of the lower case.
It forms a substantially cross-shaped suction air passage around the center .

Further, in the floor nozzle of the electric vacuum cleaner according to claim 5 of the present invention, the rotating plate is rotated by 90 degrees with respect to the nozzle body.
In this state, the lock release lever is provided for releasing the lock .

Further, the floor nozzle of the vacuum cleaner according to claim 6 of the present invention is a lock release lever in the longitudinal direction of the lower case.
At the end of the position opposite to the operating part, when tilting the nozzle body
Only the cushioning means that comes into contact with the floor is installed .

[0024]

Exploded perspective view showing the overall structure of a floor nozzle of the embodiment of the invention Figure 1 is an electric vacuum cleaner according to the present onset Ming one embodiment, FIG. 2 is a bottom view of the assembled state, FIG. 3 is its normal FIG. 4 is a perspective view showing a cleaning state of the same, FIG. 4 is a perspective view showing a cleaning state of the narrow space, FIG. 5 is a bottom view of the gap cleaning mode, and FIG. 6 is a connection pipe in the gap cleaning mode. FIG. 7 is a state view when brought close to the floor surface, FIG. 7 is a vertical sectional view showing the relationship between the elbow and the rotary plate, FIG. 8 is a perspective view showing the rotary plate in a lying state, and FIG. 9 is its normal cleaning. A longitudinal sectional view showing an engaged state of the rotary plate and the release lever in the form,
FIG. 10 is a cross-sectional view showing the engagement state of the rotating plate and the release lever in the normal cleaning mode, FIG. 11 is a bottom view of the floor nozzle in the normal cleaning mode, and FIG. 12 is a rotation of the release lever operated. 13 is a cross-sectional view showing a state in which the engagement with the plate is released.
FIG. 14 is a horizontal cross-sectional view showing a state in which the rotary plate is rotated, FIG. 14 is a horizontal cross-sectional view showing an engaged state of the rotary plate and the release lever in the gap cleaning mode, and FIG. 15 is a floor nozzle in the gap cleaning mode. It is a bottom view.

In each drawing, 31 is a substantially rectangular upper case, 32 is also a lower case, which are joined together through a bumper 33 formed of a soft material. The upper and lower cases 31, 32 and the bumper 33 form a nozzle. The main body 30 is configured. Reference numeral 34 designates a rotary plate which is inserted from below into holes 31a and 32a provided substantially in the centers of the upper and lower cases 31 and 32 and is horizontally rotatably attached to the nozzle body 30, and its flanges are provided as shown in FIG. Part 34a
By contacting the step portion 32b of the lower case 32, the insertion depth from below is regulated.
Reference numeral 35 is a ring-shaped guide plate that is inserted into the holes 31a and 32a of the upper and lower cases 31 and 32 from above and is integrated with the rotary plate 34 so as to be horizontally divided into two parts and horizontally rotatable with the rotary plate 34 with respect to the nozzle body 30. Has become. 36 is a coupling, one end side of which is formed into a square tube 36a that can be inserted into a square hole 35a formed inside each guide plate 35, and the other end side of which is formed into a cylinder 36b.
One end 37a of the elbow 37 is rotatably connected to the cylinder 36b in a vertical plane. Square tube 3 of coupling 36
Protrusions 36c that can be fitted into the holes 35b formed in the side walls of the square holes 35a of the respective guide plates 35 are provided on both sides of the outer surface of the 6a portion, whereby the coupling 36 and the guide plate 3 are provided.
5 and 5 are hinge-coupled to each other, and as shown in FIG. 7, the square tube 36a portion of the coupling 36 can rotate about the hinge portion in the square hole 35a.

Therefore, the elbow 37 can be horizontally rotated by the rotating plate 34, and can be freely rotated in the vertical plane by the hinge portion of the coupling 36.
6 is connected to the cylinder 36b so as to be rotatable in a vertical plane perpendicular to the vertical plane. In addition,
The guide plate 35 does not necessarily have to be divided into two parts. For example, the guide plate 35 may be integrally formed, and the hole for hinge connection with the coupling 36 may be a long groove or a long hole-shaped cutout formed from the upper end thereof. After the assembly with the ring 36, the coupling 36 may be subjected to a process for preventing it from coming off.

Reference numeral 38 denotes a lock release lever, which is the lower case 32.
Is attached so as to be movable along a guide rib 32c provided in the longitudinal direction, and is constantly biased inward (engagement direction) by a coil spring 39, and a hawk-shaped lock plate 38a formed at the tip thereof is Rotating plate 34
To the rotary plate 34 and the lower case 32 by fitting into the first key groove 34b provided in the first key groove 34b or the second key groove 34c formed by changing the direction of the first key groove 34b by 90 degrees.
The mounting angle is fixed, and in the state of being fitted in the first key groove 34b, the normal cleaning mode (FIGS. 3, 10, and 11) is adopted, and it is fitted in the second key groove 34c. In the combined state, the gap cleaning mode (Fig. 4, Fig. 14, Fig. 15)
It is designed to take In addition, the lock release lever 38
The operating portion 38b protrudes from the long hole 31b formed on the upper surface of the upper case 31 and can be operated from the outside.

As shown in FIG. 8, the rotary plate 34 is provided with a suction port 34d substantially at the center of its bottom surface, and also has a first portion which intersects with the suction port 34d in a T-shape and communicates with the suction port 34d. The air passages 34e and the second air passages 34f are formed, and wheels 41a and 41b that rotate in the same direction as the direction of the elbow 37 are formed on the respective lower surfaces divided into three by these T-shaped air passages 34e and 34f. , 41c are attached. Two wheels (wheels 41a and 41b) are arranged on the front side and one wheel (wheel 41c) is arranged on the rear side.
The nozzle body 30 is supported at three points. Further, behind the suction port 34d on the lower surface of the rotating plate 34, the brush bodies 42 are provided in a horizontal row, and
The unit 2 and the rotating plate 34 are adapted to rotate in a horizontal plane.

On the lower surface of the lower case 32, a lateral suction air passage 43 formed in the longitudinal direction centering on the suction opening 34d and having an outer end open, and a lateral suction air passage centering on the suction opening 34d. A vertical suction air passage 44, which crosses 43 in a cross shape and has an open outer end, is provided. In normal cleaning mode, the air passage 4 located on the front side of the suction port 34d of the vertical suction air passage 44.
4a and the side suction air passage 43 are T-shaped air passages 34 of the rotary plate 34.
In the gap cleaning mode, the air passage 43a located in front of the suction port 34d of the lateral suction air passage 43 and the vertical suction air passage 44 are connected to the T-shaped air passages 34e, 34f of the rotary plate 34.
The interior of the electric vacuum cleaner body is communicated from the suction port 34d of the rotary plate 34 through the guide plate 35, the coupling 36, the elbow 37, the connecting pipe 5, and a flexible hose (not shown). The air passage connecting to the dust collection chamber is formed.

Further, the brush body 45 is also installed behind the lower surface of the lower case 32 so as to partially overlap the brush body 42 of the rotary plate 34 in the longitudinal direction. Further, short brush bodies 46 are attached to both front sides of the lower surface of the lower case 32.

Two auxiliary wheels 47 are provided at the end of the lower case 32 on the side opposite to the lock release lever operating portion in the longitudinal direction, that is, on the rear side in the gap cleaning mode. The auxiliary wheel 47 has its mounting position set to a height that does not contact the floor surface when the floor nozzle is parallel to the floor surface.

Further, the rotating plate 34 of the upper and lower cases 31, 32
An uneven rib 32e is provided on the sliding surface 32d that comes into contact with, and even if sand dust enters these contact portions, it can escape to the concave portion of the rib 32e.
This prevents sand dust from getting caught in the sliding surface 32d and preventing the rotary plate 34 from rotating.

Further, each key groove 34b, 34 of the rotary plate 34
The lower part of c is formed in a dust collecting box 48 as shown in FIG. 9, and the dust collecting box 48 of each of the key grooves 34b, 34c is received by the rotation plate 34 rotating the sand dust contained in the recess of the rib 32e. Is configured.

Further, as shown in FIG. 9, a communication hole 49 is formed in the lower portion of the dust collecting box 48, that is, in the inner wall of each of the key grooves 34b and 34c so as to communicate with the suction air passage of the coupling 36. The sand dust received at 48 can be absorbed through the coupling 36.

Further, as shown in FIG. 9, a central hole 51 is provided in one of the projections 36c fitted into the holes 35b of the guide plate 35 of the coupling 36 to provide a suction air passage for the key groove 34b and the coupling 36. And are communicated with each other so that sand dust received by the dust collection box 48 can be absorbed. In addition, here, a hole for absorbing sand dust received by the dust collecting box 48 is formed in the rotating plate 34 or the coupling 36.
However, it may be directly provided on the guide plate 35, for example.

Further, as shown in FIGS. 11 and 12, a plurality of rows of small groove air passages 52 are provided in parallel on both sides of the rotary plate 34 at the front edge of the lower case 32 so that dust near the front edge of the floor nozzle can be small grooved. Dust can also be sucked from the air passage 52.

In the floor nozzle of the electric vacuum cleaner according to the present embodiment, in the normal cleaning mode for cleaning a wide floor surface, as shown in FIGS.
0 and as shown in FIG. 11, the lock plate 38a of the lock release lever 38 is attached to the first key groove 34b of the rotary plate 34.
Is fixed at a position where the longitudinal direction of the floor nozzle is at right angles to the direction of the elbow 37, and the state is held by the coil spring 39. The wheels 41a, 41b, 41c integrally attached to the rotary plate 34 are set so that their rotation surfaces are oriented in the same direction as the elbow 37, and are configured to rotate with respect to the forward and backward movement of the floor brush. In addition to the floor / folding, the wheel effect also reduces the operating force on the carpet.

In this normal cleaning mode, the air passage 44a and the horizontal suction air passage 43 located in front of the suction port 34d in the vertical suction air passage 44 of the lower case 32 are the T-shaped air passages 34e of the rotary plate 34, Since it is in communication with 34f, dust on the floor surface passes from the air passage 44a and the lateral suction air passage 43 through the T-shaped air passages 34e and 34f by the front-back movement of the floor nozzle, and from the suction port 34d of the rotary plate 34. Guide plate 3 sucked up
It is guided to the dust collecting chamber inside the electric vacuum cleaner body through 5, the coupling 36, the elbow 37, the connecting pipe 5, and a flexible hose (not shown). At this time, dust on the front side of the floor nozzle collects toward the suction port 34d through the air passage 34f provided between the wheels 41a and 41b, so that lint and the like do not get entangled with the wheels 41a and 41b and the rotation shaft thereof. .

Since the brush body 42 on the rotary plate 34 side and the brush body 45 on the lower case 32 side, which are provided on the rear side of the suction port 34d, are configured to fit the width of the floor nozzle, the lint on the carpet is Can be captured without leaving.

Next, when cleaning a narrow space, the operating portion 38b of the lock release lever 38 is slid outward against the biasing force of the coil spring 39, and the lock plate 38a at the tip is moved as shown in FIG. The elbow 37 is pulled out from the first key groove 34b to disengage from the rotary plate 34, and in that state, the elbow 37 is rotated 90 degrees so that the position of the elbow 37 is opposite to the operation portion 38b of the lock release lever 38. The operation portion 38b is released at the position where the longitudinal directions of the main body 30 coincide with each other. As a result, in the lock release lever 38, the lock plate 38a at the tip is moved to the second position by the biasing force of the coil spring 39.
, And the floor nozzle is fixed in the gap cleaning mode as shown in FIGS. 4, 14 and 15. In this gap cleaning mode, the elbow 37 is located at the position opposite to the operation portion 38b of the lock release lever 38, so that the operation portion 38b of the lock release lever 38 does not interfere with the elbow 37. Therefore, it is easy to operate the operation unit 38b when returning to the normal cleaning mode next time.

In this gap cleaning mode, the air passage 43a and the vertical suction air passage 44 located on the front side of the suction port 34d in the horizontal suction air passage 43 of the lower case 32 are the T-shaped air passages 34e, 34f of the rotary plate 34. Since it is communicated with the floor surface, dust on the floor surface is sucked up from the suction port 34d of the rotary plate 34 through the air passage 43a and the vertical suction air passage 44 through the T-shaped air passages 34e and 34f by the back and forth movement of the floor nozzle. Guide plate 3
It is guided to the dust collecting chamber inside the electric vacuum cleaner body through 5, the coupling 36, the elbow 37, the connecting pipe 5, and a flexible hose (not shown). The wheels 41a, 41b, 41c change the angle integrally with the rotary plate 34, and the rotation surface of the wheel 41a, 41b, 41c has an elbow 37.
It is oriented in the same direction as and rotates with respect to the back and forth movement of the floor brush. Therefore, the brush body 42 installed behind the suction port 34d of the rotary plate 34 also rotates in the horizontal plane together with the rotary plate 34, and is arranged at right angles to the moving direction of the floor nozzle and substantially in the horizontal width. Therefore, there is no leftover lint on the carpet. Further, since the suction air passage is formed in both the front and left and right directions with respect to the moving direction of the floor nozzle, dust on the front side and the left and right walls is also efficiently sucked.

The elbow 37 is the guide plate 3 on the rotary plate 34 side.
5 is attached to the nozzle main body 30 via a coupling 36 hinged to 5, and is configured to be rotatable in a plane vertical to the moving direction of the floor nozzle, so that the height of the clearance space to be cleaned is limited. Even if there is, the handy operation portion of the flexible hose can be brought close to the floor surface, and even in this state, the floor nozzle can be held in parallel with the floor surface.

When the height of the clearance space to be cleaned is large, it is conceivable that the user brings the handy operation portion of the flexible hose closer to the floor surface beyond the allowable range of the elbow-side hinge joint portion. In this case, the nozzle body 30 rotates about the front end in the longitudinal direction as a fulcrum, and the front end in the longitudinal direction floats up. In this state, the auxiliary wheel 47 comes into contact with the floor surface as shown in FIG. To prevent the floor surface from being scratched at the front end in the longitudinal direction of the floor nozzle. Auxiliary wheel 4
In No. 7, regardless of the cleaning mode, when the floor nozzle is parallel to the floor surface, its mounting position is set to a height that does not contact the floor surface. No, this does not affect the normal moving operation of the floor nozzle. The buffering means for preventing the interference with the floor surface due to the inclination of the floor nozzle is not limited to the auxiliary wheel 47, and a felt may be used, for example. Other than that, for example, a low-friction material or a thicker sheet subjected to low-friction processing may be used to cover the corner portion of the floor nozzle.

The engagement direction of the lock release lever 38 with the rotary plate 34 is set in the longitudinal direction of the lower case 32.
Therefore, in the normal cleaning mode in which the movement operation of the floor nozzle is repeated frequently, even if the lock release lever 38 may momentarily move toward the wall due to the inertial force caused by the front surface of the floor nozzle colliding strongly with a wall or the like, Since the engagement direction of the lock release lever 38 and the operation direction of the floor brush (the direction in which the inertial force acts) intersect each other, the lock plate 38a is attached to the rotary plate 3a.
It does not come off from the keyway of No. 4.

Since the sliding surface 32d of the upper and lower cases 31, 32 which comes into contact with the rotary plate 34 is provided with the uneven rib 32e, the sand dust that has entered between the rotary plate 34 and the upper and lower cases 31, 32 is rib 32e. It can be removed from the rotating surface by escaping into the recessed portion, and rotation failure due to sand dust can be prevented.

Further, each key groove 34b, 34 of the rotary plate 34
A dust collecting box 48 for receiving sand dust that has entered the concave portion of the rib 32e is provided in the lower portion of c, and the dust collecting box 48 is provided.
The ribs 32e and the suction air passage are made to communicate with each other by the communication hole 49 formed in the inner wall of the key groove and the central hole 51 formed in the protrusion 36c of the coupling 36.
No sand dust is collected in the concave portion of the rotary plate 34, and good rotation of the rotary plate 34 can be maintained for a long period of time.

[0047]

As described above, according to the present invention, According to the present invention, the connecting portion between the nozzle body and the elbow is provided with a rotary plate that rotates in conjunction with the horizontal rotation of a and elbow car wheel Therefore, the length of the floor nozzle and the angle of the elbow can be changed according to the condition of the surface to be cleaned, making it possible to clean in a narrow space and rotating the wheels in the direction of movement of the floor nozzle, Not only when folding, but also when operating on a carpet, the usability is improved.

According to the invention of claim 2, the rotary plate is
A suction port that communicates with the elbow is provided, and the wheel is placed in front of and behind the suction port.
Since it has been placed, dust is directed to the suction port through the air passage between the wheels.
Once collected. For this reason, lint, etc.
It is possible to prevent entanglement with the rolling axis.

According to the invention of claim 3, the rotary plate is
Since the brush body is provided, the brush body is horizontal with the rotating plate.
It rotates in the plane and is always perpendicular to the moving direction of the floor nozzle.
Improves thread take-up performance on carpet regardless of cleaning style
To do.

According to the invention of claim 4, the lower case
Lower surface, a substantially cross-shaped suction around the suction port of the lower case of
Since it forms a draft passage, it is always
Suck dust near the front edge of the floor nozzle and dust near both edges.
You can

According to the invention of claim 5, the rotary plate is
The lock is released when it is rotated 90 degrees with respect to the nozzle body.
Since a lock release lever is provided, the floor nozzle
The front of the floor nozzle in the normal cleaning mode in which the moving operation is repeated.
Even if it collides with a wall strongly, inertial force
Do not let the lock release lever come off the keyway of the rotating plate.
And reliability is improved.

According to the invention of claim 6, the lower case
Of the lock release lever in the longitudinal direction of the
At the end, cushioning that contacts the floor surface only when the nozzle body tilts
Since the means is installed, the floor nozzle is tilted at an angle to the floor surface.
The cushioning means can be brought into contact with the floor surface when
It is possible to prevent the surface from being scratched.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an overall configuration of a floor nozzle of an electric vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a bottom view of the floor nozzle of the electric vacuum cleaner according to the present embodiment.

FIG. 3 is a perspective view showing a state of a floor nozzle of the electric vacuum cleaner according to the present embodiment in a normal cleaning mode.

FIG. 4 is a perspective view showing a state in which the floor nozzle of the electric vacuum cleaner according to the present embodiment is in a gap cleaning mode.

FIG. 5 is a bottom view showing a state in which the floor nozzle of the electric vacuum cleaner according to the present embodiment is in the gap cleaning mode.

FIG. 6 is a state diagram when the connection pipe of the floor nozzle of the electric vacuum cleaner according to the present embodiment is brought to near the floor surface.

FIG. 7 is a vertical cross-sectional view showing the relationship between the elbow of the floor nozzle and the rotary plate of the electric vacuum cleaner according to the present embodiment.

FIG. 8 is a perspective view showing the rotary plate of the floor nozzle of the electric vacuum cleaner according to the present embodiment in a lying state.

FIG. 9 is a vertical cross-sectional view showing an engaged state of the rotating plate and the release lever in the normal cleaning mode of the floor nozzle of the electric vacuum cleaner according to the present embodiment.

FIG. 10 is a transverse cross-sectional view showing an engaged state of the rotating plate and the release lever in the normal cleaning mode of the floor nozzle of the electric vacuum cleaner according to the present embodiment.

FIG. 11 is a bottom view of the floor nozzle in the normal cleaning mode of the floor nozzle of the electric vacuum cleaner according to the present embodiment.

FIG. 12 is a transverse cross-sectional view showing a state in which the release lever of the floor nozzle of the vacuum cleaner according to the present embodiment is operated to release the engagement with the rotating plate.

FIG. 13 is a cross-sectional view showing a state where the rotary plate of the floor nozzle of the electric vacuum cleaner according to the present embodiment has rotated.

FIG. 14 is a transverse cross-sectional view showing an engaged state of the rotary plate and the release lever when the floor nozzle of the electric vacuum cleaner according to the present embodiment is in the gap cleaning mode.

FIG. 15 is a bottom view of the floor nozzle of the vacuum cleaner according to the present embodiment when the floor nozzle is in a clearance cleaning mode.

FIG. 16 is a perspective view showing a floor nozzle of a first conventional vacuum cleaner.

FIG. 17 is a bottom view showing the floor nozzle of the first conventional vacuum cleaner.

FIG. 18 is a side view showing a state where the carpet is cleaned by the floor nozzle of the first conventional vacuum cleaner.

FIG. 19 is a side view showing a state where the floor nozzle is cleaning the floor nozzle of the first conventional vacuum cleaner.

FIG. 20 is a diagram showing a state where the user is cleaning using the floor nozzle of the electric vacuum cleaner of the first conventional example.

FIG. 21 is a bottom view showing a floor nozzle of a second conventional vacuum cleaner.

FIG. 22 is an explanatory diagram for explaining a conventional problem.

FIG. 23 is an explanatory diagram for explaining a conventional problem.

[Explanation of symbols]

30 nozzle body 31 upper case, 32 lower cases,
3 4 rotary plate, 34 b, 3 4d inlet, 34e, 34
air duct f rotary plate, 3 7 elbow, 38 unlocking les <br/> bar, 4 1a, 41b, 41c wheel, brush body 42 rotating plate, 43 lateral side suction air passage (cross-shaped suction air passage ), 44 Vertical suction air passage (cross-shaped suction air passage),
47 Auxiliary wheel (buffer means ).

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shiro Ishii 1728 Omaeda, Ozono, Hanazono-cho, Saitama Prefecture 1 Mitsubishi Electric Home Equipment Co., Ltd. (72) Inventor Takanobu Ueoka 1728 Omaeda, Hanazono-cho, Saitama Prefecture 1 Mitsubishi Electric Home Equipment Co., Ltd. (72) Inventor Noriyuki Ishida 1728 Omaeda, Omaeda, Hanazono Town, Saitama Prefecture 1 Mitsubishi Electric Home Equipment Co., Ltd. (56) Reference JP-A-57-190533 (JP, A) JP-A-47-32052 (JP, A) Furukaihei 2-119114 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47L 9/02 A47L 9/00 102

Claims (6)

(57) [Claims] To 1. A nozzle body formed with a substantially rectangular upper and lower cases, in floor nozzle of a vacuum cleaner formed by connecting an elbow, a connecting portion between the nozzle body and the elbow, has a car wheel and the A floor nozzle for an electric vacuum cleaner, which is provided with a rotary plate that rotates in conjunction with horizontal rotation of the elbow. 2. A rotary plate having a suction port communicating with the elbow.
Provided, floor nozzle of the vacuum cleaner according to claim 1 wherein said wheel, characterized in that arranged before and after the suction opening. 3. A rotating plate is provided with a brush body.
The floor nozzle of the vacuum cleaner according to claim 1 or 2. 4. A suction port of the lower case on the lower surface of the lower case.
The floor nozzle of the electric vacuum cleaner according to any one of claims 1 to 3, wherein a substantially cross-shaped suction air passage centering at the center is formed . 5. A rotating plate rotates 90 degrees with respect to the nozzle body.
The floor nozzle of the electric vacuum cleaner according to any one of claims 1 to 4, further comprising a lock release lever that is unlocked in a locked state . 6. A lock release lever in the longitudinal direction of the lower case.
At the end of the position opposite to the operating part, when tilting the nozzle body
A floor nozzle for an electric vacuum cleaner according to any one of claims 1 to 5, further comprising a cushioning means for contacting the floor surface .