JP2012035127A - Floor brush and vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor brush having a structure not decreasing a dust sucking capacity and rendering allergen piling up in a dust collecting box harmless and a vacuum cleaner.SOLUTION: The floor brush includes a futon-brush 1 having a suction opening on the bottom and a built-in rotary brush 17. The brush 1 includes a lower case 11 having rear suction ports 19 and 20 for acquiring torque of the brush 17, the first air channel for so changing a route of air sucked from the rear port 20 as to lift air up and then lift it down and as to blow it onto a surface to be cleaned before air hits the brush 17 and the second air channel for so changing a route of air sucked from the ports 19 as to lift air down and as to blow it onto the surface to be cleaned before air hits the brush 17. The brush 1 includes the lower case 11 and an upper case 12. The port 20 is provided beneath a coupling 15 in the rear of the case 11. The ports 19 are provided on both sides of the port 20 in the rear of the case 11.

Description

  The present invention relates to a floor brush for an electric vacuum cleaner and an electric vacuum cleaner using the floor brush, and more particularly to a floor brush and an electric vacuum cleaner for cleaning a soft surface to be cleaned such as a futon.

  Conventionally, as a suction tool for a vacuum cleaner that cleans a soft surface to be cleaned such as a futon, the dust present on the surface to be cleaned and the surface to be cleaned are located in the suction device at a position facing the suction port formed on the lower surface of the suction device. A rotating brush that knocks out and scrapes the dust buried underneath is rotatably provided, a joint that communicates with the suction port is provided in the approximate center of one side of the suction tool, and the outside air enters the suction tool case on the upper surface of the suction tool case. To prevent the soft cleaning surface such as futon from adsorbing to the suction port by forming a partition wall that divides the suction port into a plurality of suction ports. Is known (see, for example, Patent Document 1).

JP-A-2005-177124 (FIGS. 1 and 2, paragraphs [0027] to [0031])

In the conventional futon suction tool disclosed in Patent Document 1, when the suction tool is moved back and forth by manual operation during cleaning, the suction tool from the futon due to contact between the leading edge of the suction tool or the rear end of the suction tool and the futon, etc. There is a limit to sucking dust that has risen around the top only with the opening on the top surface, and there is a lot of dust that remains floating. There was a problem that.
In addition, since allele substances contained in the futon and the outside air are sucked without detoxification, those that do not have a detoxifying filter etc. on the vacuum cleaner body side are made harmless with the dust when the accumulated dust is thrown away. There was a risk that allergens that were not soared would rise and be inhaled by humans.

  The present invention has been made in order to solve the above-described problems, and its purpose is to have a structure in which the allele substance in the dust collected in the dust collection box is rendered harmless without impairing the dust suction capability. It is to obtain a floor brush and a vacuum cleaner.

  The floor brush of the present invention is a floor cleaning floor brush provided with a suction case having a suction port on the lower surface and incorporating a rotating brush, and a suction joint provided in the suction tool case and communicating with the suction port. The first outside air inlet for obtaining the rotational force of the rotating brush, the second outside air inlet for obtaining the rotational force of the rotating brush, and the air sucked from the first outside air inlet is raised. By changing the trajectory through which air flows so as to be lowered, the first air flow path sprayed onto the surface to be cleaned before hitting the rotating brush and the trajectory through which air sucked from the second outside air inlet is lowered A second air flow path that blows against the surface to be cleaned before hitting the rotating brush, and the suction tool case includes an upper case and a lower case, and the first outside air suction Mouth is said A portion of the rear portion of the case below the suction joint and extending in the direction of the rotating brush from the bottom side, which is the side near the surface to be cleaned, of the region in which the tip portion is operatively held. The second outside air suction port is provided so as to be substantially adjacent to each other, and is provided at a position shifted slightly above the both sides of the first outside air suction port at the rear portion of the lower case.

  The floor brush of the present invention includes a suction tool case having a suction port on the lower surface and having a built-in rotary brush, and a suction joint provided in the suction tool case and communicating with the suction port to obtain the rotational force of the rotary brush. A first outside air inlet for the purpose, a second outside air inlet for obtaining the rotational force of the rotating brush, and a trajectory through which the air flows so that the air sucked from the first outside air inlet is raised and then lowered. By changing the first air flow path that blows against the surface to be cleaned before hitting the rotating brush and the trajectory of the air flowing so as to lower the air sucked from the second outside air suction port, before hitting the rotating brush A second air channel that blows on the surface to be cleaned, and a suction tool case, the suction tool case includes an upper case and a lower case, and the first outside air suction port is provided at a rear portion of the lower case, The suction joint Provided so as to be substantially adjacent to a portion extending in the direction of the rotating brush from the bottom side, which is the lower side of the hand and in which the tip end portion thereof is operatively held, the side closer to the surface to be cleaned. The second outside air suction port is provided at a position slightly above the both sides of the first outside air suction port at the rear portion of the lower case, so that the dust suction capability can be maintained. Have

It is a perspective view which shows the structure of the vacuum cleaner using the floor brush in embodiment of this invention. It is a block diagram which shows the structure of the futon brush main body 1 in embodiment of this invention. It is a block diagram of the dust collection box 13 in embodiment of this invention. It is a figure which shows the Yoroi door for adjusting the air suction | inhalation amount of a floating dust inlet. It is a figure which shows operation | movement of the shutter provided in the dust collection box. It is a block diagram of the grating | lattice part in embodiment of this invention. It is explanatory drawing which shows the attachment or detachment state of a grating | lattice and a grating | lattice part main body. It is a principal part longitudinal cross-sectional view of the futon brush in embodiment of this invention. It is a principal part longitudinal cross-sectional view of the futon brush in embodiment of this invention (it includes the flow of air). It is a bottom view which shows the bottom face of the futon brush in embodiment of this invention. It is a rear view of the futon brush in the embodiment of the present invention. It is a rear view of the futon brush in the embodiment of the present invention (addition of a switching lever). It is a schematic diagram which shows the mode of the tissue paper with which the grating | lattice in embodiment of this invention is mounted | worn. It is AA sectional drawing in FIG.

Embodiment 1 FIG.
In this embodiment, a futon will be described as an example of a soft floor. First, the configuration will be described. FIG. 1 is a perspective view showing a configuration of a vacuum cleaner using a futon brush according to an embodiment of the present invention. As shown in FIG. 1, the vacuum cleaner includes a futon brush 1, an extension pipe 2 connected to the duvet brush, a hand operation part 3 connected to the extension pipe 2, a hand operation part and a hose. It is comprised with the vacuum cleaner main body 4 connected via.
FIG. 2 is a configuration diagram showing the configuration of the futon brush 1 in the embodiment of the present invention. The futon brush 1 is a collection provided detachably on the lower case 11, the upper case 12, and the upper case. It is composed of a dust box 13, a wheel 14, and a joint 15 at the connection port of the extension pipe 2, and a concave portion is provided in the front center portion of the dust collection box 13. Used as 131. A floating dust inlet 132 for taking in floating dust is formed in the back of the recess. A latch 133 that fixes the dust collection box 13 to the upper case 12 by engagement is provided at the center top of the dust collection box 13.
3 is a configuration diagram of the dust collection box 13 in FIG. 2, FIG. 3 (a) is an exploded perspective view of the dust collection box, and FIG. 3 (b) is a side sectional view. FIG. 4 is a view showing a door door for adjusting the air intake amount of the floating dust inlet, and FIG. 4A is a state in which the door door 136 provided in the inlet 135 is in a closed state, that is, the inlet. Indicates that there is no blockage. FIG. 4B shows a case where the Yoroi door is open, that is, the suction port is fully open. FIG. 4C shows a Yoroi door. By manually moving the Yoroi door from side to side, the air intake amount of the floating dust suction port can be adjusted by switching to the open state or the closed state depending on the combination with the floating dust suction port.
FIG. 5 is a diagram showing the operation of the shutter provided in the dust collection box.
FIG. 6 is a configuration diagram of the lattice portion in the embodiment of the present invention, and FIG. 7 is an explanatory view showing the attachment / detachment state of the lattice and the lattice portion main body.

  As shown in FIG. 3B, a shutter 21 is provided at the front of the dust collection box 13 to prevent dust leakage when the dust collection box 13 is removed from the upper case 12. Further, a lattice portion 16 through which an air flow containing suspended dust passes is provided at the rear portion of the dust collection box 13, and allele substances are made harmless from the suspended dust between the suspended dust inlet and the lattice portion 16. A filter 134 impregnated with a medicine (for example, polyphenol) is disposed in a state of being accommodated in a filter case 135. The lattice portion 16 is composed of a lattice portion main body 161 having flanges on both sides that expand toward the rear upper portion for reinforcement, and a lattice 162 that is detachably stored in the lattice portion main body 161. By removing the joint portion, the lattice portion main body 161 is rotatably provided rearward with the lower leg portion as a fulcrum. Further, as shown in FIG. 13, the periphery of the front part of the lattice part body 161 is kept airtight by a plate and a seal rib 137 extending at the lower part of the lower part of the dust collection box 13 at the lower part. Sealing with the dust collection box is maintained by packing A163. Further, the periphery including the rear flange of the lattice unit main body 161 is in contact with a seal rib 138 provided at the rear of the upper case 12 by the seal packing B164 to maintain airtightness. Further, a tissue paper 139 can be sandwiched between the seal rib 137 of the dust collection box 13 and the seal packing A163. In this case, the lattice portion 16 functions as a reinforcing member for the tissue paper 139.

  FIG. 8 is a longitudinal sectional view of a main part of the futon brush according to the embodiment of the present invention, and shows a state where the dust collection box 13 is mounted. FIG. 9 is a diagram in which an air flow is added to FIG. FIG. 10 is a bottom view showing the bottom surface of the futon brush according to the embodiment of the present invention, and arrows in the figure indicate the flow of air. FIG. 11 is a rear view of the futon brush according to the embodiment of the present invention. FIG. 14 is a cross-sectional view taken along the line AA in FIG. FIG. 9 is a cross-sectional view taken along the line BB in FIG. As shown in FIGS. 10 and 11, rear intake ports 19 and 20, which are openings for sucking air, are formed on both sides and the center on the rear side of the lower case 111, respectively, and further on the front of the bottom surface A mouth 18 is provided. Further, a lower case opening 111 is formed in front of the bottom surface, and the rotary brush 17 is disposed so as to face the lower case opening 111 when viewed from below. Further, in FIG. 9, an intake air flow path 201 that communicates between the rear intake port 20 and the air outlet 18 with an inclination is formed. Also in FIG. 14, as in FIG. 9, an intake air flow path 191 is formed that communicates between the rear air inlet 19 and the air outlet 18 with an inclination. The rotating brush 17 is a brush that is rotatably attached to the lower case 11 and is rotated by the outside air. The rotating brush 17 strikes the futon to scrape out dust from the futon surface and the inside of the futon, and comes into contact with allele substances contained in the dust. It is configured to be harmless. The rotary brush 17 is preliminarily coated with a chemical that renders the allele substance harmless. FIG. 12 is a diagram in which a switching lever for changing the opening area of the rear suction port is added to FIG. 10, and a member indicated by 23 in the figure is the switching lever. 12A shows a state in which the lower rear opening is fully opened by the operation of the switching lever 23, and FIG. 12B shows a state in which the lower rear opening is fully closed by the operation of the switching lever 23. ing.

Next, the operation of this embodiment will be described with reference to FIGS.
When the vacuum cleaner is activated by operating the hand operating portion 3 of the vacuum cleaner, the futon attracts to the bottom surface of the lower case 12 of the futon brush 1 by the suction force of the vacuum cleaner body 4, and the lower case opening 111 is blocked. It is. Then, outside air is sucked in from the rear intake ports 19 and 20 formed on both sides and the center of the lower case rear portion due to the differential pressure of the air pressure. As shown in FIG. 9, the outside air sucked from the central rear air inlet 20 rises slightly according to the air flow path 201, then flows obliquely forward and downward, and is guided to the air outlet 18 that is in contact with the futon surface. . Accordingly, outside air flowing through the air flow path 201 is blown from the air outlet 18 to the surface to be cleaned (futon) before passing through the rotating brush 17, hits the futon surface, and suppresses the sucking of the futon. Further, the outside air sucked from the rear air inlets 19 on both sides flows obliquely forward and downward along the air flow path 191 as shown in FIG. 14, and is guided to the air outlet 18 that is in contact with the futon surface. Therefore, the outside air flowing through the air flow path 191 is blown from the air outlet 18 to the surface to be cleaned (futon) (both sides) before passing through the rotating brush 17, hits the futon surface, and suppresses the sucking of the futon. Thereafter, the air flow is sucked from the lower case opening 111 at the lower part of the lower case, merges, blows against the rotating brush 17, and rotates the rotating brush 17. And the allele substance contained in the dust which soars from the surface to be cleaned is made harmless by contacting the allele detoxifying flock 171 of the rotating brush 17. In addition, when the rotation direction of the rotary brush 17 and the movement direction of the futon brush 1 are reversed during cleaning, the number of contact between the allele detoxifying flock 171 and the futon increases, and the detoxification of the allele substance is promoted. The The air stream in which the allele material has been rendered harmless is then blown down in the order of the lower part of the rotating brush → the front part of the rotating brush → the upper part of the rotating brush → the rear part of the rotating brush, and then the air stream.

  In addition, when the futon brush 1 is moved back and forth during cleaning, the futon brush 1 soared upward from the futon mainly behind the futon brush 1 due to the contact between the front surface of the futon brush 1 and the futon. Airborne dust is sucked together with outside air from the rear air inlets formed on both sides and the center of the rear of the lower case, and the air flow path 191 → the air outlet 18 → the surface to be cleaned (futon) → the rotating brush 17 (here, the allele substance) Is made harmless by contact with the flocking) → the dust collection box 13 → the lattice portion 16 in order of suction by the suction force of the cleaner body 4 and moving. On the other hand, the floating dust that has risen upward from the futon in front of the futon brush 1 due to the contact between the front surface of the futon brush 1 and the futon is sucked from the floating dust inlet 132 provided in the front recess of the dust collection box 13. Then, the air is sucked and moved by the suction force of the cleaner body 4 along another air flow path connected to the lattice portion 16 through the filter 134. When the air flow passes through the filter 134, the allele substance contained in the suspended dust is detoxified by contacting the filter 134 impregnated with the allergen detoxifying agent. Thus, the floating dust that has risen from the futon by sliding back and forth of the brush 1 can be efficiently sucked from the front and rear suction ports.

Then, the air flow flowing from the floating dust suction port 132 to the lattice portion 16 through the inflow filter 134 is merged with the air flow via the rotary brush 17 at the exit of the lattice portion 16, and the joint 15, the extension pipe 2, and the hand operation. It flows in the order of the part 3 and is sucked into the cleaner body 4.
Usually, by using the lattice part 16 as it is without attaching the tissue paper 139 to the lattice part 16, the dust carried to the dust collection box 13 and the detoxified allele substance pass through the lattice part 16 as they are. It is finally sucked into the cleaner body 4 via the joint 15. For this reason, almost no dust accumulates in the dust collection box 13.
On the other hand, the tissue paper 139 is sandwiched between the lattice unit main body 161 and the seal packing A163 and the tissue paper 139 is attached to the lattice unit 16, so that dust originally sucked into the cleaner body 4 is dammed by the dust collection box 13. You can stop. By using the tissue paper 139 for damming in this way, coarse dust can be collected in the dust collection box, and fine dust that has passed through the tissue paper 139 is collected in the dust collection box in the vacuum cleaner body 4. become. As a result, it can be used as a primary dust collection chamber of the cleaner body, and the frequency of throwing away dust in the cleaner body can be reduced.
Further, by making the dust collection box transparent, it is possible to visually confirm the amount of dust in the dust collection box, so that the cleaning effect can be easily confirmed.

Further, when throwing away the dust in the dust collection box or when cleaning the lattice in the dust collection box, the latch 133 of the dust collection box 13 is pushed by hand to release the engagement with the upper case 12, By placing the hand on the handle 131 and lifting it upward, the dust collection box 13 can be separated from the upper case 12 and pulled out to the outside. When the dust collection box 13 is removed from the upper case, the shutter 21 automatically closes the opening of the air flow path of the dust collection box 13 as shown in FIG. 3, so that it is possible to prevent dust from leaking outside. By simply tilting the grid portion 16 backward with the lower portion as a fulcrum and tilting the upper portion of the dust collection box to the bottom surface, the dust in the dust collection box can be easily dropped together with the tissue paper 139 by gravity and discarded. Can do. Thereafter, the grating portion 16 can be cleaned if necessary.
The operation of the shutter will be briefly described. When the dust collection box 13 is removed from the upper case, as shown in FIG. 5C, the shutter 21 is collected by the biasing force of a spring provided between the ceiling inner surface of the dust collection box 13 and the upper surface of the shutter. Since the air flow opening 13 is automatically closed, it is possible to prevent dust from leaking outside. The position of the spring is not limited to the above, and any spring may be used as long as it automatically closes the airflow opening of the dust collection box 13. When the dust collection box is stored in the upper case, as shown in FIG. 5 (d), the shutter 21 is strongly pushed up against the spring force by the roof-like member 22 provided in the upper case, and automatically opens and stabilizes. Therefore, the air flow path in the upper case that accommodates the rotating brush 17 is secured, and the air sucked from the rear through the lower case opening 111 is smoothly blocked without being blocked by the shutter 21 and is extended to the rear. Suction to 2 side.

Next, the lattice unit 16 will be described. The size of the lattice 162 of the lattice portion 16 is such that when the lattice portion 16 is used as it is without attaching the tissue paper 139 to the lattice portion 16, the dust of the air flow passing therethrough is not dammed up. When the 139 is used by being attached to the lattice portion 16, it is designed to function as a reinforcing member that reinforces the tissue paper 139 to the extent that it does not break.
Specifically, when the opening area tissue paper 139 on the lattice surface is attached, air becomes difficult to pass (close to a clogged state), and thus the load on the cleaner increases. Therefore, it is desirable to secure an opening area of the lattice portion of 5000 mm ² or more.
Also, if the size of each lattice hole is too large, the tissue paper 139 will be torn by the suction machine, and if it is too small, the aperture ratio of the hole will be low, and the size of the part with respect to the opening will be large. End up. Therefore, the size of the lattice hole is desirably larger than 3 mm * 3 mm and not larger than 10 mm * 10 mm. In this embodiment, a square hole of approximately 6 mm * 6 mm, the thickness of the lattice is about 1.2 mm, and the aperture ratio is about 69%.
Incidentally, when trying to make a grating surface having an open area of 5000 mm ² it is readily seen that it is necessary an area of ^{5000 / 0.69 = 7247 (mm 2} ).

When attaching the tissue paper 139 to the lattice portion 17, as shown in FIG. 13, first, after removing the dust collection box 13, the lattice portion 16 is tilted backward with the lower portion as a fulcrum, and then the tissue paper 139 is removed. It is folded and placed on the lattice unit main body 161 including the seal packing A163. In this case, one end of the tissue paper 139 is extended to the vicinity of the rotation fulcrum so that the tissue paper 139 can be sandwiched between the seal rib 137 and the seal packing A163 and attached to the lattice unit base. Next, the lattice part 16 is rotated counterclockwise and raised upward. Thereby, the tissue paper 139 is returned to the original position, and the tissue paper 139 is sandwiched between the seal rib 137 of the dust collection box 13 and the seal packing A163.
In addition, since the grid 162 is configured to be detachable from the grid unit main body 161 as shown in FIG. 7, when the grid 162 is unnecessary or when it is not desired to collect dust in the dust collection box such as during cleaning. The grid 162 can be manually detached from the grid unit body 161. As a result, the air flow passes through the lattice portion 16 without any obstacles, and the dust is stored in the dust collection box of the cleaner body 4 instead of the dust collection box 13, so that it can be used as a normal futon cleaner, Unfamiliar users are freed from unnecessary hassle.

Also, there are a variety of hard to soft ones depending on the futon. Therefore, the degree of sticking to the lower case varies depending on the type and hardness of the futon. Therefore, as shown in FIG. 12, the opening area of the rear intake ports 19 and 20 can be changed by manually switching the switching lever 23 to the left and right. As a result, it is possible to obtain the proper suction to the futon, the proper rotation of the rotating brush and the degree of vacuum, and the dust collection efficiency can be maintained.
In addition, as shown in FIG. 12, the opening area of the floating dust suction port 132 can be changed by manually switching the left and right door doors 136 provided in the floating dust suction port 132 of the dust collection box 13. It is. Thereby, it is possible to maximize the suction efficiency of floating dust with as little power as possible. In other words, in winter when the air is clean, the opening area is increased to increase the suction power, and in spring when there is a lot of pollen or in the summer when bacteria are likely to grow, the opening area is reduced to increase the suction power and make allele substances more Adjust so as to suck more.
In this example, the switching lever 23 and the door door 136 are switched to two stages, but the present invention is not limited to this and may be switched to three or more stages. Further, continuous switching may be used instead of stepwise switching.

Further, as shown in FIGS. 10 and 11, air suction openings 20 and 21 are formed at both ends and the center of the back of the bottom of the futon brush 1, respectively, and an air outlet 19 is formed at the front bottom. Is provided. Further, a lower case opening 111 is formed at the front, and a rotary brush faces the lower case opening 111 when viewed from below.
In this case, the opening area of the rear intake port is as follows. In order to rotate the rotating brush, the area of the intake port should not be too wide or too narrow.
At present, the sum of the opening areas of the three rear intake ports is set to about 550 mm ^{2 in} order to ensure a rotational speed of 2500 rpm or higher and a vacuum degree of 100 mmH ₂ O or higher.

  In the present embodiment, the outside air is sucked from the rear via the rear intake port, but it is not necessary to limit to the rear, and the air may be sucked from any of the surrounding directions. For example, you may inhale from the side. In this case, the same effect can be obtained.

  Moreover, although the futon brush was demonstrated in this Embodiment, it cannot be overemphasized that it is applicable not only to a futon brush but the floor brush of a vacuum cleaner generally.

  DESCRIPTION OF SYMBOLS 1 Futon brush, 2 Extension pipe, 3 Hand operation part, 4 Vacuum cleaner main body, 11 Lower case, 12 Upper case, 13 Dust collection box, 14 Wheel, 15 Joint, 16 Lattice part, 17 Rotating brush, 18 Air outlet, 19 Rear intake port (both sides), 20 Rear intake port (middle), 21 Shutter, 22 Roof-like member, 23 Switching lever, 111 Lower case opening, 131 Handle, 132 Airborne dust intake port, 133 Latch, 134 Filter, 135 Filter case, 136 Yoroi door, 137 Seal rib (lower case), 138 Seal rib (upper case), 139 Tissue paper, 161 Lattice body, 162 Lattice, 163 Seal packing A, 164 Seal packing B, 171 Flocking, 191 Intake air flow Road, 201 Suction air flow path.

Claims (4)

In a floor brush for floor cleaning comprising a suction case having a suction port on the lower surface and incorporating a rotating brush, and a suction joint provided in the suction tool case and communicating with the suction port.
A first outside air inlet for obtaining a rotational force of the rotating brush;
A second outside air inlet for obtaining the rotational force of the rotating brush;
A first air flow path that blows on the surface to be cleaned before hitting the rotating brush by changing the trajectory of the air so that the air sucked from the first outside air inlet is raised and then lowered;
A second air flow path that blows on the surface to be cleaned before hitting the rotating brush by changing the trajectory of the air so as to lower the air sucked from the second outside air inlet;
Is formed in the suction tool case,
The suction tool case includes an upper case and a lower case,
The first outside air suction port is below the suction joint of the rear portion of the lower case, and from the bottom side that is the side closer to the surface to be cleaned, in the region where the tip end portion is operatively held. Provided so as to be substantially adjacent to a portion extending in the direction of the rotating brush, and the second outside air suction port is provided at a position slightly above the both sides of the first outside air suction port at the rear of the lower case. A floor brush characterized by that.   The floor brush according to claim 1, wherein the rotating brush includes a flocking impregnated with an agent that renders the allele substance harmless.   The floor brush according to claim 1, wherein the suction tool case includes a mechanism that adjusts an opening area of the second outside air suction port to adjust a rotation speed of the rotary brush.   The vacuum cleaner provided with the floor brush in any one of Claims 1-3.

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