JP2954806B2 - Upright type vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upright type vacuum cleaner in which a suction port body is rotatably supported with respect to a vacuum cleaner body.

[0002]

2. Description of the Related Art As shown in Japanese Patent Publication No. 62-19168, a conventional upright type vacuum cleaner is shown in FIGS.
3, a rotary brush 2 and a driving pulley 4 coupled to the rotary brush 2 are provided with a rotary brush 2 and a brush 3 that protrudes and retracts from the suction port main body 1 behind the rotary brush 2.
On the other hand, an idle pulley 5 which is separated in parallel and adjacent is provided, and a flat belt 7 for transmitting the rotation of the fan motor 6 to one of the drive pulley 4 and the idle pulley 5, and the flat belt 7 is driven by the drive pulley 4 or the idle pulley A belt switching mechanism 8 for moving to one of the pulleys 5 and a brush retracting mechanism 9 for the brush 3 linked to the belt switching mechanism 8 are provided.

[0003] This conventional vacuum cleaner has a structure in which the rotating brush 2 is moved or stopped in accordance with a surface to be cleaned such as a carpet or a tatami mat. When the carpet is cleaned, the carpet is cleaned. The flat belt 7 is connected to the driving pulley 4 by the belt switching mechanism 8 to rotate the rotary brush 2 by the driving force of the fan motor 6 in order to remove dust on the surface. When cleaning the floor of a tatami mat or the like, the flat belt 7 is moved by the belt switching mechanism 8 to the idle pulley 5.
And the rotating brush 2 is stopped, and the brush 3 is protruded by the retracting mechanism 9.

[0004]

However, in a conventional upright type vacuum cleaner, when cleaning a hard floor surface such as a tatami mat, the brush 3 is projected behind the rotating brush 2,
Since the rotary brush 2 is floated from the floor while the suction port body 1 is supported by the brush 3, the adhesion between the floor and the suction port 10 is poor, and there is a drawback that the dust absorbing power is poor. .

At this time, since the rotating brush 2 is stopped to perform cleaning, there is no effect of increasing the dust-absorbing force.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide an upright-type vacuum cleaner having improved adhesion to a floor surface and improved dust-absorbing power.

[0007]

According to a first aspect of the present invention, there is provided a cleaner body having a rotatable suction main body provided on a main body of a cleaner and a suction main body provided on a bottom surface of the main body. In an upright type vacuum cleaner provided with a rotating brush 28 having a tip end of a brush bristles 36 protruding from a suction port 27 provided, a bottom surface 26 of the suction port main body 25 is provided.
In addition, a bottom frame 29 surrounding a portion other than the front portion 27a of the suction port 27 is provided so as to be movable up and down.
Switching means 30 for moving the bottom frame 29 up and down in accordance with the material of the floor surface is provided.
When the bottom frame 29 is in the lowered state, the amount of protrusion of the bottom frame 29 from the suction port main body bottom surface 26 is set to be larger than the amount of protrusion of the tip end of the brush bristles 36, and in the lowered state and the raised state of the bottom frame 29, Reference numeral 28 denotes a rotatable drive.

According to the second aspect, the switching means 30 is provided with a variable mechanism 40 for adjusting the amount of protrusion of the bottom frame 29.

According to the third aspect, the bottom frame 29 is provided with an elastic sealing material 53 so as to surround the suction port 27.

According to a fourth aspect, a notch is provided in a part of the sealing material 53.

According to a fifth aspect of the present invention, a guide groove connecting the notch of the sealing material and the suction port is provided on a bottom surface between the bottom frame of the suction port body and the suction port.
Is formed.

[0012]

The bottom frame 29 is moved up and down by switching the switching means 30. When the bottom frame 29 is lowered when cleaning a hard floor such as a tatami mat, the amount of protrusion of the bottom frame 29 from the bottom surface 26 of the suction port main body 25 becomes larger than the amount of protrusion of the rotary brush 28, 28 does not come into contact with the floor surface, and the sealing material 53 provided on the bottom frame 29 deflects and comes into contact with the floor surface. Therefore, the adhesion to the floor surface increases. Since the rotating brush 28 of the suction port main body 25 is constantly rotating, an airflow is generated in the vicinity of the suction port 27 in the direction of the cleaner main body 21, and the dust suction power is increased.

When cleaning a carpet or the like, the bottom frame 29 is raised and the rotating brush 28 is made to protrude beyond the bottom frame 29. Then, the suction port main body 25 is
The distance between the carpet and the floor is variable, and the rotating brush 28 is hardly inserted into the carpet hair, so that dust attached to the carpet can be scraped off.

According to the fourth and fifth aspects of the present invention, the wind speed sucked from the notch 54 of the sealing material 53 increases, so that the suction force increases. Then, the dust sucked from the notch 54 is guided to the suction port 27 by the guide groove 56, so that the suction of the dust becomes more effective.

[0015]

【Example】

(First Embodiment) FIG. 1 is a side view of an upright type vacuum cleaner showing a first embodiment of the present invention, FIG. 2 is a plan view of a suction port body of the upright type vacuum cleaner of the first embodiment, 3 is a bottom view of the suction port main body, FIG. 4 is a sectional view taken along the line AA of FIG. 2, showing a lower state of the bottom frame, FIG. 5 is a view showing a rising state of the bottom frame, and FIG. FIG. 7 is a sectional view taken along line CC of FIG.
FIG. 8 is a perspective view showing a height adjusting body, and FIG. 9 is an overall perspective view of an upright type vacuum cleaner.

The upright type vacuum cleaner of this embodiment is
As shown in FIGS. 1 and 2, a wheel 22 is provided at the bottom of a cleaner body 21 in which a dust collection bag is provided, and a suction fan motor (electric blower) 23 is built in below. The cleaner main body 21 is provided with a suction port main body 25 rotatably supported by a support shaft 24 provided on a side surface of the cleaner main body 21, and the suction port main body 25 is provided on a bottom surface 26 of the main body. A rotating brush 28 is provided in which the tip of the brush bristles 36 protrudes from the suction port 27.

As shown in FIG. 3, on the bottom surface 26 of the suction port main body 25, a bottom frame 29 surrounding both sides and a rear portion of the suction port 27 leaving the front portion 27a is provided so as to be vertically movable. A switching means 30, which will be described later, is moved up and down according to the material of the floor surface. Then, the suction port 27 moves up and down with respect to the floor surface. When the bottom frame 29 is lowered by the switching means 30, the amount of projection of the bottom frame 29 from the suction port main body bottom surface 26 is set to be larger than the amount of projection of the tip of the brush bristles 36 of the rotating brush 28. ing.

The rotating brush 28 has a rotating body 31 externally fitted and fixed to a rotating shaft 28a. As shown in FIG. 4, both ends of the rotating shaft 28a are rotatable by bearing members 32 fixed inside the suction port main body 25. It is supported by. And rotating brush 2
An endless flat belt 35 is wound around a driving pulley 33 externally fitted and fixed to one side of the rotating member 8 and a rotating shaft 34 of the suction fan motor 23.
Are inserted in a spiral shape, and the distal end portion 36 a of the brush bristles 36 is arranged to protrude from the bottom surface 26 of the suction port main body 25.

The rotating brush 28 can be driven to rotate when the bottom frame 29 is lowered as shown in FIG. 4 and when the bottom frame 29 is raised as shown in FIG.

The bottom frame 29 is formed in a U-shape in plan view as shown in FIG. 3, and is arranged so as to surround the rear portion and both side portions of the suction port 27. Further, as shown in FIG. 4, the cross-sectional shape is formed in a U-shape. A connecting rod 37 for moving the bottom frame 29 up and down is fixed to the upper portion of the bottom frame 29.

The connecting rod 37 is formed in a U-shape in a front view as shown in FIG.
9 is fixed.

As shown in FIGS. 6 and 7, the switching means 30 includes an urging member 39 for urging the connecting rod 37 upward and a bottom frame 29 for urging the bottom frame 29 against the urging force of the urging member 39. And a variable mechanism 40 for adjusting the amount of protrusion.

The urging body 39 is formed of a compression spring, and is housed in a housing 42 of a concave portion 41 formed on the upper surface of the suction port main body 25, and is fitted with a cylindrical receiving base 43 whose upper surface is closed. Have been. The upper surface of the receiving base 43 is in contact with the connecting rod 37.

As shown in FIG. 7, the variable mechanism 40 includes a height adjuster 44 which abuts on the connecting rod 37 and presses down the bottom frame 29 against the upward biasing force of the compression spring 39, and a height adjuster. And a height switching knob 45 for varying the pressing force of the body 44.

As shown in FIG. 8, the height adjusting body 44 is formed in a cylindrical shape, and the lower surface in contact with the connecting rod 37 is formed in a stepped shape having four levels of height. 37 is a variable section 46 for moving up and down.

The height switching knob 45 is provided on the height adjusting body 4.
Cover plate 4 covering the concave portion 39 of the suction port main body 25 above the suction port body 4
7, a circular flat plate 48 rotatably penetrated and disposed on the same plane as the covering plate 47, and a knob portion formed on the upper surface of the flat plate 48 to have a convex shape in cross-sectional view and projecting upward from the covering plate 47. 49, and an engaging portion 50 formed in a cylindrical shape at the center of the lower surface of the flat plate 48 and fitted to the upper portion of the height adjusting body 44.

On the outer peripheral surface of the height adjusting body 44, four grooves 51 are formed, and when the height switching knob 45 is rotated, a plate-like elasticity fixed to the cover plate 47 of the suction port main body 25 is formed. The body 52 fits into the groove 51 of the height adjustment body 44,
A click is caused to cause the height adjustment body 44 to move to "H" shown in FIG.
"IGH""MID""LOW""FLOOR / TOOL"
Stop at the position of S ″.

A skirt 53, which is a sealing material having elasticity such as rubber, is provided on the lower surface of the bottom frame 29 so as to surround the suction port 27, and its height is about 8 to 10 mm. When the bottom frame 29 is in the lowered state, the amount of protrusion of the suction port main body 25 from the bottom surface 26 is greater than the amount of protrusion of the rotating brush 28, and the rotating brush 28 is separated from the floor surface. And
As shown in FIG. 4, the skirt 53 deflects by about half the height of the cleaner and abuts against the floor due to the weight of the vacuum cleaner, thereby enhancing the adhesion between the suction port body 25 and the floor. However, the bending direction is not limited to the outside.

As shown in FIG. 3, the skirt 53 is provided with two notches 54 on both sides of the skirt 53 on both sides of the skirt 53 in order to improve the suction performance from both sides of the suction port main body 25. It is about 1-2 cm. Further, a bottom surface 55 between the bottom frame 29 of the suction port main body 25 and the suction port 27.
A guide groove 56 connecting the cutout 54 of the skirt 53 and the suction port 27 is formed.

In FIGS. 1 and 9, reference numeral 57 denotes a handle,
8 is a dust collecting case, 59 is a hose, 60 is a bumper, 61
Is an exhaust port, 62 is a roller, and 63 is a power cord.

In the above configuration, when cleaning a hard floor surface such as a tatami mat, the height switching knob 45 is rotated to match the position of "FLOOR / TOOLS" shown in FIG.
The height adjusting body 44 also rotates at the same time, and the highest portion of the variable portion 46 comes into contact with the connecting rod 37. The height adjusting body 44 presses the connecting rod 37 downward, and as shown in FIG. 4, the bottom frame 29 descends, and the rotating brush protrudes from the bottom surface 26 of the suction port main body 25 from both sides surrounding the suction port 27 and from the rear. 28 is larger than the protrusion amount. Then, the skirt 53 is bent by the weight of the vacuum cleaner and abuts on the floor surface, and the rotating brush 28 is separated from the floor surface.

Then, when the switch is turned on, the suction fan motor 23 in the cleaner main body 21 is driven, the rotary brush 28 in the suction port main body 25 is rotated, dust is generated, and dust is sucked.

At this time, the bottom frame 29 is connected to the front part 2 of the suction port 27.
Since both sides and the rear except 7a are surrounded and the skirt 53 is bent and abuts on the floor surface, the adhesion to the floor surface is improved, and the dust-absorbing force is effectively exhibited. Since the rotating brush 28 of the suction port main body 25 is constantly rotating, an airflow is generated in the vicinity of the suction port 27 in the direction of the cleaner main body 21, and the dust suction power is increased.

A notch 54 provided in the skirt 53
Then, since the wind speed of dust inhalation increases, the suction force increases. Then, the dust sucked from the notch 54 is guided to the suction port 27 by the guide groove 56, so that the suction of the dust becomes more effective.

Next, when cleaning the carpet or the like, the height switching knob 45 is set to “LO” according to the length of the carpet hair.
When rotated to the position of "W", "MID" or "HIGH", the variable portion 46 according to the rotation of the height adjustment body 44 comes into contact with the connecting rod 37. Then, the connecting rod 37 is moved upward by the compression spring 39. As a result, the bottom frame 29 rises as shown in FIG. 5, and the amount of protrusion of the bottom frame 29 from the bottom surface 26 of the suction port main body 25 becomes smaller than the amount of protrusion of the rotary brush 28.

Then, the suction port main body 25 is lowered with respect to the bottom frame 29, and the height adjusting body 44 adjusts the distance between the suction port main body 25 and the floor surface according to the length of the carpet hair. As a result, the rotating brush 28 can be properly inserted into the carpet's hair, and dust attached to the carpet can be removed.

As described above, when cleaning the floor surface of a tatami mat or the like, the bottom frame 29 surrounds both sides and the rear except the front portion 27a of the suction port 27, and furthermore, the skirt 5 on the lower surface of the bottom frame 29.
3 flexes and comes into contact with the floor surface, so that the adhesion to the floor surface increases, and the dust-absorbing force is effectively exerted. Further, since the rotating brush 28 of the suction port main body 25 is constantly rotating, an airflow toward the inside of the vacuum cleaner main body is generated near the suction port 27,
Dust absorption power increases.

Then, notches 54 are formed on both sides of the skirt 53.
Is provided, the wind speed sucked from the notch 54 is increased, the dust-absorbing force at the corners such as the wall is increased, and dust on both sides of the suction port main body 25 can be sucked. In addition, skirt 5
Since the guide groove 56 connecting the notch 54 of No. 3 and the suction port 27 is formed, the dust sucked from the notch 54 is guided to the suction port 27 by the guide groove 56, and the suction of the dust becomes more effective. .

When cleaning carpets and the like,
The height adjustment body 44 can adjust the distance between the suction port main body 25 and the floor surface according to the length of the carpet hair, so that the rotating brush 28 is properly inserted into the carpet hair and adheres to the carpet. Scrub garbage and inhale.

(Second Embodiment) FIG. 10 is a sectional view of a suction port main body of an upright type vacuum cleaner showing a second embodiment, and FIG.
1 is a bottom view of the suction port main body.

The upright type vacuum cleaner of this embodiment is
As shown in FIGS. 10 and 11, a bottom frame 29 is provided to surround both sides and the rear of the suction port 27 except for the front portion 27a.
9 are provided with grooves 64 on both sides and at the rear, so that the bottom frame 29 comes into direct contact with the floor surface in a lowered state.
Other configurations are the same as those of the first embodiment.

When cleaning the floor surface of a tatami mat or the like, even if the bottom frame is lowered to directly contact the floor surface for cleaning, the suction port
Of the rotating brush 28
Is separated from the floor surface, the adhesion between the floor surface and the suction port 27 is increased, and the dust absorbing power is increased.

Since the groove 64 is provided in the bottom frame 29, the bottom surface of the bottom frame 29 and the floor surface are prevented from sticking to each other, and the dust is also sucked from the groove 64 so that the cleaning is performed smoothly. I can do it.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made to the above-described embodiment within the scope of the present invention.

For example, the cutouts 54 of the skirt 53 of the first embodiment are provided on both sides of the skirt 53, but may be provided on the rear and both sides of the skirt 53. The number of cutouts 54 in the skirt 53 is not limited to two.

[0046]

As is apparent from the above description, according to the first aspect of the present invention, since the bottom frame can be moved up and down according to the material of the floor surface, in the case of a floor surface such as a tatami mat, The bottom frame protrudes from the bottom surface of the suction port main body and surrounds the other part leaving the front part of the suction port, which improves the adhesion to the floor surface,
Dust absorption power is effectively exerted. Further, since the amount of protrusion of the bottom frame is larger than the amount of protrusion of the rotating brush, the rotating brush does not contact the floor surface, so that the floor surface can be prevented from being damaged by the rotating brush.
In addition, since the rotating brush is constantly rotated in the lowering state and the raising state of the bottom frame, an airflow is generated in the vicinity of the suction port toward the cleaner body, and the dust-absorbing power is increased.

According to the second aspect of the present invention, since a variable mechanism for adjusting the amount of protrusion of the bottom frame is provided, when cleaning a carpet or the like, the suction port main body, the floor and the floor surface are adjusted according to the length of the carpet hair. The spacing of the can be adjusted, and the rotating brush can be properly inserted into the carpet hair, so that the dust attached to the carpet can be lifted and inhaled.

According to the third aspect of the present invention, since the bottom frame is provided with the sealing material so as to surround the suction port, the sealing material is bent against the floor surface, and the adhesion to the floor surface is further increased, so that the dust absorbing power is increased. Can be.

According to the fourth aspect, since the notch is provided in the sealing material, the wind speed sucked from the notch at the time of inhaling dust increases, the dust-absorbing force increases, and dust at corners such as near a wall can be sucked.

According to the fifth aspect, since the guide groove is formed on the bottom surface connecting the cutout of the sealing material and the suction port, dust sucked from the cutout is guided to the suction port by the guide groove. Therefore, there is an excellent effect that the effect of sucking dust from the cutout of the sealing material is enhanced.

[Brief description of the drawings]

FIG. 1 is a side view of an upright type vacuum cleaner showing a first embodiment of the present invention.

FIG. 2 is a plan view of an inlet main body of the upright type vacuum cleaner according to the first embodiment.

FIG. 3 is a bottom view of the suction port main body.

FIG. 4 is a view showing a lowering state of a bottom frame in the AA sectional view of FIG. 2;

FIG. 5 is a sectional view showing a raised state of a bottom frame.

FIG. 6 is a sectional view taken along line BB of FIG. 2;

FIG. 7 is a sectional view taken along the line CC of FIG. 2;

FIG. 8 is a perspective view showing a height adjusting body.

FIG. 9 is an overall perspective view of an upright type vacuum cleaner.

FIG. 10 is a cross-sectional view of an inlet main body of an upright type vacuum cleaner showing a second embodiment.

FIG. 11 is a cross-sectional view showing a lowered state of a bottom frame of the second embodiment.

FIG. 12 is a partially cutaway side view of a conventional upright type vacuum cleaner.

FIG. 13 is a bottom view of a conventional suction port main body.

[Explanation of symbols]

 21 Vacuum cleaner main body 24 Support shaft 25 Suction port main body 26 Bottom surface 27 Suction port 27a Front of suction port 28 Rotating brush 29 Bottom frame 30 Switching means 36 Brush bristles 40 Variable mechanism 53 Seal material 54 Notch 56 Guide groove

Claims (5)

(57) [Claims] 1. A cleaner main body is provided with a rotatable suction port main body, and the suction port main body is provided with a rotating brush having a tip end of brush bristles protruding from a suction port provided on a bottom surface of the main body. In the upright type vacuum cleaner, a bottom frame surrounding a portion other than a front portion of the suction port is provided on the bottom surface of the suction port body so as to be vertically movable, and the bottom frame is formed on the suction port main body on a floor surface. Switching means for moving up and down according to the material is provided, and the amount of projection of the bottom frame from the bottom surface of the suction port body is set to be larger than the amount of projection of the tip of the brush bristle when the bottom frame is in the lowered state by the switching means. An upright type vacuum cleaner wherein the rotating brush is configured to be rotatable when the bottom frame is lowered and raised. 2. The upright type vacuum cleaner according to claim 1, wherein said switching means is provided with a variable mechanism for adjusting an amount of protrusion of said bottom frame. 3. An upright type vacuum cleaner, wherein an elastic sealing material is provided on the bottom frame of claim 1 so as to surround said suction port. 4. An upright type vacuum cleaner wherein a cutout is provided in a part of the sealing material according to claim 3. 5. The upright type vacuum cleaner according to claim 4, wherein a guide groove connecting a cutout of the sealing material and the suction port is provided on a bottom surface between the bottom frame of the suction port main body and the suction port. An upright type vacuum cleaner, characterized in that an is formed.