JP2003088483A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner whose dust collecting efficiency is improved sufficiently by taking suction from a different part even when a paper bag is fitted closely to the whole lattice plane of a suction air lattice body having a dust collecting filter. SOLUTION: In the suction air lattice body 13 having the dust collecting filter 24, suction air can flow into the suction air lattice body 13 nearly from a horizontal direction. Thus, even when the paper bag is fitted closely to the whole lattice plane of the suction air lattice body 13, the suction air nearly in the horizontal direction flows into the suction air lattice body 13, suction is performed until the paper bag is fully expanded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner capable of preventing a decrease in dust absorbing power even if dust is accumulated in a paper bag.

[0002]

2. Description of the Related Art A conventional vacuum cleaner will be described with reference to FIGS.

In a conventional electric vacuum cleaner, a dust collecting chamber 52 which communicates with the suction port and accommodates the paper bag 51 in a detachable manner, and a partition wall 53 is formed behind the dust collecting chamber 52. And a dust collecting lid 55 that covers the upper opening of the dust collecting chamber 52 in an openable and closable manner.
3, there is a structure in which an intake grid body 56 equipped with a dust collecting filter 60 is detachably attached so that dust or the like is prevented from entering the electric blower 57 that emits suction air by the intake grid body 56. The intake grid body 56 is held by packing 58 made of an elastic material such as rubber, which is provided at the upper opening edge of the dust collection chamber 52 and the upper end of the partition wall 53. Further, the packing 58 has a dust collecting chamber 52.
A plurality of protrusions 59 are integrally formed toward the side.

In the vacuum cleaner having the above structure, the upper portion of the paper bag 51 is prevented from contacting the paper bag 51 with the suction grid 56 by the air sucked from the suction port by the projection 59 of the packing 58. There is something.

[0005]

However, in the above-mentioned conventional configuration, when dust starts to collect in the paper bag 51 and the paper bag 51 spreads in the dust collecting chamber 52, the dust collecting filter arranged in front of the electric blower 57. The paper bag 51 is closely attached to the entire lattice surface of the intake lattice body 56 having the electric blower 5
The suction efficiency of No. 7 is reduced. Therefore, the paper bag 51 may not be fully inflated, the dust collection capacity may not increase, and the dust collection efficiency may decrease.

The present invention is intended to solve the above problems,
Even if the paper bag is in close contact with the entire lattice surface of the intake lattice with the dust collection filter, by incorporating suction from different parts,
An object of the present invention is to provide a cleaner body having a sufficiently improved dust collection efficiency.

[0007]

In order to achieve the above object, the present invention provides an electric blower chamber provided with a dust collecting chamber formed by a partition wall having a communication port and an electric blower for emitting suction air for sucking dust. And a detachably attached paper bag for collecting dust in the dust collection chamber and a communication port of the partition wall to face the dust collection chamber to prevent dust from flowing into the electric blower. In a cleaner body having an intake grid body having a dust collecting filter for preventing, an electric vacuum cleaner in which suction air can flow into the intake grid body from a substantially horizontal direction, and suction air generated by an electric blower is intake air. The main suction air flowing in a direction substantially perpendicular to the lattice surface of the lattice body and the portion of the intake lattice body different from the lattice surface on which the lattice is formed are substantially horizontal to the lattice surface, that is, the above-mentioned main The auxiliary in the direction almost perpendicular to the direction of the suction wind Even if the suction force of the main suction air is reduced by generating a flow of draft and the paper bag is in close contact with the lattice surface of the intake lattice, the suction efficiency is reduced because the secondary suction air sucks into the dust collection chamber. The performance can be exhibited efficiently without

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is
It is divided into a dust collecting chamber formed by a partition wall having a communication port and an electric blower chamber provided with an electric blower that draws suction air for sucking dust, and is detachably attached to collect dust in the dust collecting chamber. In the main body of the cleaner provided with a paper bag and an air intake grid body facing the communication port of the partition wall and having a dust collecting filter on the dust collecting chamber side for preventing the inflow of dust into the electric blower, Suction air can flow into the grid from a substantially horizontal direction, and the suction air generated by the electric blower forms a grid together with the main suction air flowing in a direction substantially perpendicular to the grid surface of the intake grid. From the part of the intake lattice body that is different from the lattice plane that is being set, it is approximately horizontal to the lattice plane, that is,
Even if the auxiliary suction air flow is generated in a direction substantially perpendicular to the main suction air flow direction, and the paper bag comes into close contact with the lattice surface of the intake lattice body and the suction force of the main suction air decreases, Since the suction air is sucked into the dust collecting chamber, the performance can be efficiently exhibited without lowering the suction efficiency.

According to a second aspect of the present invention, the intake lattice is formed by a plurality of orthogonal lattice ribs, and the vertical and / or horizontal lattice ribs are collected from the frame of the intake lattice. In addition to projecting to the chamber side, the projecting lattice rib ends are extended to the outside of the outer periphery of the frame of the intake lattice, whereby the paper bag is expanded and the lattice surface of the intake lattice is expanded. , And the grid ribs protruding from the outer periphery of the frame body, the grid ribs protruding toward the dust collecting chamber side from the frame body of the intake grid body form a space, and the intake grid body Since the auxiliary suction air is taken in between the lattice ribs extending outside the frame outer circumference, even if the pressure loss of the main suction air becomes large, it can be sucked by the auxiliary suction air and the dust collection efficiency To show the performance of the electric blower without dropping Door can be.

According to a third aspect of the present invention, a convex portion formed of an outer shell of the main body and protruding in the forward direction is provided in parallel with the intake grid body, and is located outside the outer periphery of the frame body of the intake grid body. A groove-shaped air flow path is formed between the extended lateral grid ribs and the convex portion, and the suction air flows through the air flow path, so that the electric blower does not reduce the dust collection efficiency. The performance of can be demonstrated.

According to a fourth aspect of the present invention, a groove-shaped air flow path is formed behind a lateral grid rib extending outside the outer circumference of the frame of the intake grid. Since the suctioned air flows through the air flow path, the performance of the electric blower can be exhibited without lowering the dust collection efficiency.

According to a fifth aspect of the present invention, the packing for maintaining airtightness between the dust collecting chamber and the lid covering the opening of the dust collecting chamber is provided so as not to block the groove-shaped air passage. Thus, the space between the projected lattice ribs and the partition wall or the wall surface of the packing serves as a passage for the suction air, so that the dust collection property can be further improved when the paper bag is expanded.

According to the sixth aspect of the present invention, a concave cutout portion or an intake hole is provided on the frame side portion of the intake lattice, whereby suction air flows from the cutout portion. Therefore, the dust collection property when the paper bag is further expanded can be made efficient.

According to a seventh aspect of the present invention, a convex portion formed of an outer shell of the main body and projecting in the forward direction is provided in the dust collecting chamber in parallel with the intake grid body, and is formed by a lateral grid rib of the intake grid body. Is also provided so as to project, and the convex portion is formed by partially bending or inclining toward the end of the lattice rib in the horizontal direction. For the paper bag which is folded back in the direction, the fact that the paper bag is caught at a step when the paper bag is expanded is eliminated by the curved portion of the lattice rib, and the paper bag is not caught, so that the paper bag is easily expanded.

According to an eighth aspect of the present invention, a concave cutout portion or an intake hole is provided in an upper portion of the frame of the intake lattice, and a rib is provided which forms an air passage communicating with the cutout portion or the intake hole. It is provided on the lid, which secures a suction passage for suction air when the paper bag is expanded.
The dust collection performance can be efficiently exhibited.

According to a ninth aspect of the present invention, a projecting portion projecting toward the partition wall side of the lattice rib below the concave notch portion of the intake grille is provided, and the projecting portion and the partition wall partially form. The dust collecting filter is held on the inside of the bag, so that the dust collecting filter is held securely, so that the suction air does not pass through the gap between the dust collecting filter and the air intake grid, and the dust collecting filter can be used to securely hold the dust collecting filter in the paper bag. Fine dust that cannot be removed can be removed.

According to a tenth aspect of the present invention, the protruding portion is inclined, whereby the dust collecting filter is curved at the intake air intake portion from the outer peripheral portion of the intake lattice. Since the suction air passes through the dust collecting filter in a substantially vertical direction, the performance can be exhibited without reducing the dust collecting efficiency.

According to the eleventh aspect of the present invention, the protrusion is provided on the partition wall side, and the dust collecting filter will not be displaced from the inside of the intake lattice frame after the dust collecting filter is attached.

[0019]

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

In the figure, the cleaner body 1 has a dust collecting chamber 4 for accommodating a paper bag 3 for collecting dust in front of a lower cover 2 having an upper opening forming an outer shell, and a suction airflow in the rear. An electric blower room 6 for accommodating the electric blower 5 is provided,
The upper part of the electric blower chamber 6 is covered with an upper cover 7, and the electric blower 5 is sandwiched between the lower cover 2 and the upper cover 7 via a cushion 8. An upper cover 7 is provided above the dust collection chamber 4.
It is covered with a lid 9 which is pivotally supported on the above and can be opened and closed, and a partition wall 10 for partitioning the dust collecting chamber is provided so as to face the lower cover 2 and the lid 9, and the partition walls are Air tightness is ensured by tightly packing air through the packing 11 between them. The dust collecting chamber 4 and the electric blower chamber 6 are separated from each other by a partition wall 1
It is divided by 0, and the communication port 1 provided in the partition wall 10
2 is provided so that air is communicated with the dust collection chamber 4. Further, ribs are formed in a grid shape on the communication port 12.

An air intake grid 13 is arranged in front of the communication port 11 on the side of the dust collection chamber 4, and a retaining rib 14 having a substantially L-shaped cross section is provided in the partition wall 10 in a U-shape. The hooking rib 15 provided on the outer periphery of the frame portion of the
It is hung on 4 and held. In addition, a cord reel chamber 16 is provided adjacent to the electric blower chamber 6, and a power cord 17 is wound around a drum 18 and stored. Since the cord reel chamber 16 is attached so that a part thereof enters the dust collection chamber 4, the partition wall 10 has a projection 19 on the dust collection chamber 4 side. This is because it is necessary to secure a dust collecting volume and a space for winding the power cord 17 in order to reduce the size of the vacuum cleaner body 1, which greatly affects the dust collecting volume in the dust collecting chamber 4. This is because the cleaner body 1 is downsized in the front-rear direction by allowing the cord reel chamber 16 to enter in the portion that is not provided. In addition, the convex portion 19 is provided from the side surface of the holding rib 14 that holds the intake grid body 13 through a space,
A groove 20 is formed in the vertical direction between the holding rib 14 and the convex portion 19.

The intake grid 13 is provided with grid ribs 21 orthogonal to each other in the vertical and horizontal directions, and a part of the grid ribs 21 is provided so as to project toward the dust collecting chamber 4 side. Further, the lattice ribs 21 extending in the lateral direction project from the outer peripheral portion of the frame of the intake lattice body 13, one extending to the side wall portion of the partition wall 10 and the other extending to the convex portion 19 in front of the cord reel chamber 16. There is. Further, the protruding grid rib 21 extends so as to cross the groove 20 described above, but the rear end face of the grid rib 21 is provided with a gap with the partition wall 10 as shown in the drawing.
The groove 20 forms an air flow path through which air flows.
Further, the convex portion 19 is formed by providing an R-shaped portion 19a that partially becomes a curved portion or an inclined portion toward the end portion of the lattice rib 21 in the horizontal direction.

Further, a concave notch 22 is provided in the frame portion in the upper portion of the intake grid body 13 so that the dust collection chamber 4 and the electric blower chamber 6 can communicate with each other from above the intake grid body 13 as well. It is designed to take in a suction wind that is almost vertical. Here, also in the lid 9 that covers the upper part of the dust collection chamber 4, in order to make it easier for air to flow into the cutout portion 22 provided in the intake grid body 13, the rib 23 that forms an air passage communicating with the cutout portion 22. Have been extended.

A dust collection filter 24 is housed between the air intake grid 13 and the partition wall 10 and inside the frame of the air intake grid 13, and the dust collection filter 24 collects fine dust that has passed through the paper bag 12. Dust is prevented from entering the electric blower chamber 6 side. The dust collecting filter 24 is held by the holding portions 25 provided on the side surface and the lower portion of the intake grid body 13, and at the same time, the dust collecting filter 24 is arranged inside the vertical grid ribs 21 of the intake grid body 13 at the rear side. The dust collecting filter 24 is sandwiched and held between the partition wall 10 and the inclined rib 26 provided to displace the dust collecting filter 24.

With the above-described structure, suction air passes through the intake grid 13 at the initial stage from the front grid surface, that is, the main suction parallel to the direction of communication between the dust collection chamber 4 and the electric blower chamber 6. The wind passes through the lattice surface of the intake lattice body 13,
When dust starts to accumulate in the paper bag 3 and the paper bag 3 expands and comes into close contact with the lattice surface of the intake lattice body 13, the main suction air passes through the paper bag 3 and sucks the entire dust collection chamber 4, The paper bag 3 becomes a pressure loss, and the suction efficiency is reduced. At that time, air is sucked from the groove 20 by an air passage constituted by a grid rib 21 protruding from the frame on the side of the intake grid body 13 and extending, and a groove 20 between the intake grid body 13 and the convex portion 19. The suction wind can take in the suction wind in a direction substantially perpendicular to the flow of the main suction wind described above from the side surface of the intake grill 12 along the lattice ribs 21 through the groove 20, and the main suction wind is damaged by pressure. Even if the suction force is lost due to the suction force, suction can be performed without reducing the dust collection efficiency by the suction air from this side surface. Also, on the opposite side, the extended grid rib 21
A space formed between the partition wall 10 and the partition wall 10 becomes a groove, and a flow of suction air in a substantially vertical direction is generated, and the same effect can be obtained.

Also in the notch 22 provided in the upper portion of the intake grid 13, the suction air is substantially perpendicular to the main suction air described above due to the ribs 23 provided in the lid 9 and forming the air passages. From this direction, the intake grill 13 can suck suction air, and like the suction from the side of the intake grill 13,
Even if the paper bag 3 is in close contact with the lattice surface and the suction force of the main suction air is reduced, the paper bag 3 is sucked from the cutout portion 22 and the performance of the electric blower 5 can be efficiently maintained without reducing the dust collection efficiency. .

Notch 22 at the top of the intake grid 13
And at the position of the dust collecting filter 24, the intake grid 13
The dust collecting filter 24 is curved rearward (toward the partition wall 10) by the inclined slanting rib 26 which is a projecting portion provided so as to project toward the dust collecting filter 24 on the upper side, and the slanting rib 26 and the partition wall 10 are arranged. Since the dust collecting filter 24 is sandwiched and held by and, since the dust collecting filter 24 is securely held by curling up and waviness of the dust collecting filter 24, the suction air from the cutout portion 22 is prevented. Since it reliably passes through the dust collecting filter 24 and the suction air passes in the thickness direction of the dust collecting filter 24, the pressure loss due to the dust collecting filter 24 is not amplified.

In the recessed notch 22 provided in the upper frame portion of the intake grid 13, as shown in FIG. 11, even if the notch 22 is made into the intake hole 27, the same effect as the notch can be obtained. it can. Further, even when sucking the suction air from the side surface portion of the intake lattice body 13, the frame portion of the intake lattice body 13 is provided with notches 28 or intake holes as shown in FIG. The effect of the extended grid rib 21 can be further improved.

Further, in the holding means of the dust collecting filter 24, as shown in FIG. 10, by providing a plurality of triangular pyramidal bosses 29 which are protrusions on the dust collecting filter 24 side of the lattice rib 21, the dust collecting filter 24 is It is possible to regulate the shift in the vertical and horizontal directions due to being caught.

The extension of the grid ribs 21 from the side surface of the intake grid 13 and the intake air from the direction substantially perpendicular to the main intake air due to the notch 22 provided in the upper frame portion of the intake grid 13 are described. In order to reduce the contact area of the paper bag 3 so as to eliminate the pressure loss due to the paper bag 3 caused by the paper bag 3 coming into close contact with the lattice surface of the intake grid body 13 due to the expansion of the paper bag 3, Lattice rib 2 of body 13
Since the effect can be obtained without further increasing the rib height by further projecting 1 toward the dust collecting chamber 4 side, it is possible to cope with miniaturization of the main body without increasing the size of the main body in the front-back direction. it can.

[0031]

As described above, according to the present invention, even if the paper bag is in close contact with the entire lattice surface of the air intake lattice having the dust collecting filter, suction is taken in from different parts to sufficiently enhance the dust collecting efficiency. It is possible to provide an improved cleaner body.

[Brief description of drawings]

FIG. 1 is a perspective view of a vacuum cleaner body showing an embodiment of the present invention.

FIG. 2 is a perspective view of the main body with the lid removed.

FIG. 3 is a top arrow view of the main body with the cover and lid removed.

FIG. 4 is an enlarged view of a part of FIG.

5 is a sectional view taken along line AA of FIG.

FIG. 6 is a central sectional view of the same body.

7 is a partially enlarged view of FIG.

FIG. 8 is a perspective view of a main body with the lid body partially cut.

FIG. 9 is a front perspective view of the intake lattice.

FIG. 10 is a rear perspective view of the intake lattice.

FIG. 11 is a partial perspective view of the other intake grid body.

FIG. 12 is a central sectional view of a conventional vacuum cleaner.

FIG. 13 is an overall perspective view of an air intake lattice of the vacuum cleaner.

[Explanation of symbols]

1 Vacuum cleaner body 3 paper bags 4 Dust collection chamber 5 electric blower 6 Electric blower room 9 lid 10 partition walls 12 communication ports 13 Intake lattice 19 convex 20 grooves (air flow path) 21 Lattice rib 22 Notch 23 ribs 24 Dust collection filter 26 Inclined rib 27 Intake hole 28 Notch 29 Boss

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hideaki Sakitani             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Takaaki Ogawa             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 3B006 DA06                 3B062 AD01

Claims (11)

[Claims] 1. A dust collection chamber formed by a partition wall having a communication port and an electric blower chamber provided with an electric blower for drawing suction air for sucking dust, and the dust is collected in the dust collection chamber. A cleaner equipped with a detachably attached paper bag and an air intake grid body facing the communication port of the partition wall and having a dust collecting filter on the dust collecting chamber side for preventing dust from flowing into the electric blower. In the main body, an electric vacuum cleaner into which suction air can flow into the intake grid even from a substantially horizontal direction. 2. The intake grid is formed of a plurality of grid ribs orthogonal to each other, and the vertical and / or horizontal grid ribs are projected toward the dust collection chamber side from the frame of the intake grid, and the projections are formed. The electric vacuum cleaner according to claim 1, wherein an end portion of the lattice rib thus formed is provided outside the outer periphery of the frame of the intake lattice. 3. A lateral grid rib, which is provided in the dust collection chamber in parallel with an intake grid body and is formed of an outer shell of the main body, and extends outside the outer periphery of the frame body of the intake grid body. The vacuum cleaner according to claim 2, wherein a groove-shaped air flow path is formed between the convex portion and the convex portion. 4. The electric vacuum cleaner according to claim 3, wherein a groove-shaped air flow path is formed behind a lateral grid rib extending outside the outer periphery of the frame of the intake grid. 5. The electric cleaning according to claim 3, wherein a packing that maintains airtightness between the dust collection chamber and the lid that covers the opening of the dust collection chamber is provided so as not to block the groove-shaped air passage. Machine. 6. The intake notch according to claim 1, wherein a concave notch or an intake hole is provided on a side of the frame of the intake lattice.
Vacuum cleaner according to the item. 7. A convex portion formed of a main body shell and projecting in the forward direction is provided in the dust collection chamber in parallel with the intake grid body and projecting more than a lateral grid rib of the intake grid body, and the projection is provided. 7. The portion is formed by being partially curved or inclined so as to face the end of the lattice rib in the lateral direction.
The vacuum cleaner according to any one of 1. 8. The cover according to claim 1, wherein a concave cutout portion or an intake hole is provided in an upper portion of the frame of the intake lattice, and a rib forming an air passage communicating with the cutout portion or the intake hole is provided on the lid body. The vacuum cleaner according to any one of 7 above. 9. A projection part projecting to the partition wall side of the grid rib below the concave cutout part of the intake grid body is provided, and the projection filter and the partition wall partially hold the dust collecting filter. The electric vacuum cleaner according to 6 or 8. 10. The electric vacuum cleaner according to claim 9, wherein the protrusion has an inclined shape. 11. The electric vacuum cleaner according to claim 9, wherein a protrusion is provided on the partition wall side of the protrusion.