JPH04364824A - Electric cleaner - Google Patents

Abstract

PURPOSE:To provide an electric cleaner having a filter to prevent dust entrance into an electromotive fan room, which is constituted so simply that a fine dust filter can be easily attached to and detached from a body, and further provided with such a filter holding structure as hardly injuries a paper filter when it is used in a dust collecting room. CONSTITUTION:A filter holding part 45b of a frame body which is provided integrally with a packing 45 made of a soft material such as soft vinyl chloride is extended into a dust collecting room 25 along a partition 24. An engaging part 45b of the filter holding part 45b passes through a through hole 44a of a fine dust filter 44 to be engaged with a communication hole 32 formed in the partition 24, whereby the fine dust filter 44 is held along the partition 24 in a sandwiched state between the filter holding part 45b and the partition 24.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner having a fine dust filter for preventing dirt from entering the interior of an electric blower.

0002

2. Description of the Related Art Conventionally, a vacuum cleaner main body is partitioned into an electric blower chamber for housing an electric blower and a dust collection chamber for collecting dust that is sucked in by a partition wall. If the paper filter or other dust collection filter installed in the dust collection chamber is torn, it prevents dust from entering the electric blower chamber, protects the electric blower, and captures the dust that has been sucked in. For this reason, a fine dust filter with air permeability is provided in the dust collection chamber to cover the communication hole in the partition wall. This fine dust filter is designed so that it can be held facing the partition wall, covering the communication hole, without coming off even if the main body is dropped during cleaning, or even if the main body collides with a wall or the like and receives an impact.

An example of a conventional vacuum cleaner of this type is shown in FIG. The vacuum cleaner body 1 consists of a lower case 2 made of synthetic resin that is open at the top and an upper case 3 that is open at the bottom. An electric blower chamber 6 that communicates with the dust collection chamber 4 and houses an electric blower 5 is formed, and a large number of communication holes 7 are formed between the dust collection chamber 4 and the electric blower chamber 6, and a plurality of communication holes 7 are formed in the lower case. An integrally molded lower partition wall 8a is formed. An upper partition wall 8b is formed in the upper case 3, and the partition wall 8 is constituted by the upper partition wall 8a and the lower partition wall 8b.

[0004] A support wall 2a is formed in the lower case 2.
Further, the upper case 3 is formed with a support wall 3a that comes into contact with the support wall 2a, and the electric blower is supported by these support walls 2a and 3a. And electric blower 5
is held between these support walls 2a, 3a via an annular support member A made of an elastic material such as rubber, and the support walls 2a,
3a and the support member A airtightly partition the electric blower 5 into a suction side and an exhaust side. Further, the upper opening of the dust collection chamber 4 is opened and closed by a lid 9 that is rotatably provided on the upper case 3 about a rotation axis (not shown) located behind the partition wall 8. be.

Reference numeral 10 denotes a packing made of elastic soft rubber provided at the edge of the opening of the dust collection chamber 4. When the lid 9 is closed, the inside of the packing 10 comes into contact with the opening edge of the dust collection chamber 4, thereby creating a space between the lid 9 and the dust collection chamber 4. It is a seal. Reference numeral 11 denotes a fine dust filter having air permeability, which covers the communication hole 7 in the dust collecting chamber 4 and prevents dust from entering the electric blower chamber 6. In order to hold the lower end of the fine dust filter 11 on the bottom surface of the dust collection chamber 4, a holding rib 2b extending along the partition wall 8 and a holding rib 2c extending in a direction perpendicular to the partition wall 8 are attached to the lower case 2. The packing 10 is provided with a holding piece 10a that extends along the partition wall 8 in the dust collection chamber 4, and the holding piece 10a holds the filter 1.
The upper part of the fine dust filter 11 is held by the holding ribs 2b and 2c, and the lower part of the fine dust filter 11 is held by the holding ribs 2b and 2c, respectively.
1 is disposed facing the partition wall 8 so as to cover the communication hole 7 of the partition wall 8.

[0006]

[Problem to be Solved by the Invention] In the vacuum cleaner described above, in order to attach the fine dust filter to the dust collection chamber, the tip of the holding piece formed integrally with the packing must be kept lifted toward the dust collection chamber. There is a problem in that the fine dust filter is complicated to handle because it is necessary to align and hold the fine dust filter with the holding ribs and then cover the top of the filter with a holding piece that is integrated with the packing. In addition, since a synthetic resin holding rib protrudes into the dust collection chamber, if a paper filter is used in the dust collection chamber, the paper filter expands due to the increased amount of dust collected, and the suction force of the electric blower causes the paper filter to become a partition. When the paper filter is attracted to the wall and is moved in this state or is subjected to impact, the paper filter is easily damaged by being strongly hit or rubbed against the corners of the holding ribs that protrude into the dust collection chamber. Therefore, there is a risk that fine dust may leak out, and in some cases, the paper filter may be torn, causing the internal dust to scatter into the dust collection chamber. Furthermore, since members for holding the filter are provided on both the packing and the main body, there is a problem that the structure becomes complicated.

The present invention solves the above-mentioned problems and provides an electric filter that has a simple structure and is easy to handle when attaching and detaching a fine dust filter, and also has a filter holding structure that prevents the paper filter from being damaged even when a paper filter is used. The purpose is to obtain a vacuum cleaner.

[0008]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a main body having an electric blower chamber and a dust collection chamber;
an opening formed in the dust collection chamber for loading and unloading the dust collection filter; a lid for opening and closing this opening; and a soft material provided at the edge of the opening and abutting against the inside of the lid when the lid is closed. a large and elastic packing; a partition wall having a communication hole that partitions the dust collection chamber and the electric blower chamber and communicates the dust collection chamber and the electric blower chamber; and the dust collection chamber of the partition wall. A fine dust filter that is mounted facing the side and has air permeability that covers the communication hole, is formed integrally with the packing without forming a filter holding part that presses the fine dust filter on the main body. At least both end portions of the fine dust filter are held down by a filter holding portion which interposes the fine dust filter between the dust filter and the partition wall.

[0009]

[Operation] In the vacuum cleaner of the present invention, the fine dust filter is placed between the partition wall and the filter holding portion integrally formed with the packing, and the fine dust filter is held down. Further, the filter holding part that is integrated with the packing reliably holds the fine dust filter without forming a filter holding part that presses the fine dust filter on the main body. Moreover, even if a paper filter is used in the dust collection chamber, since the filter holding part is formed integrally with the soft packing, the suction force of the electric blower will move it toward the partition wall, that is, in the direction away from the paper filter. It is difficult for the filter holding part to come into contact with the filter holding part.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. Reference numeral 21 denotes a vacuum cleaner body, which is composed of a lower case 22 and an upper case 23 molded from synthetic resin. The main body 21 has a partition wall 2 integrally molded with the lower case 22.
4 into the front and rear, and the front side of the partition wall 24 (
A dust collection chamber 25 having an upward opening 25a is formed on the left side in FIG. 1, and an electric blower chamber 26 is formed on the rear side (right side in FIG. 1).

An electric blower 27 is installed inside the electric blower chamber 26, and supports walls 28a, 28b, 2 formed on the lower case 22.
8c, support walls 29a and 29b formed on the upper case 23
, 29c via annular rubber supports 30 and 31. This electric blower 27 has its suction side and exhaust side airtightly partitioned by the frontmost support walls 28a, 29a and a support 30, and the suction side is separated by the partition wall 2
It communicates with the dust collection chamber 25 through a plurality of vertically elongated communication holes 32 formed in the dust collection chamber 25 . Further, the exhaust side of the electric blower 27 communicates with an exhaust hole 33 formed on the rear surface of the upper case 23.

An opening 25a formed above the dust collection chamber 25
The lid body 3 is rotatably provided on the main body 21 around a rotation axis (not shown) located behind the partition wall 24.
It opens and closes at 4. A paper filter 35 serving as a dust collecting filter is provided in the dust collecting chamber 25 so as to be detachable using a clamp 36. Lower case 2 facing the dust collection chamber 25
A suction opening 37 is formed in the suction opening 3.
A front cover 39 is fixed to the lower case 22 and has a suction port 38 opposite to the front cover 39 . Note that an annular suction port packing 40 is attached from the rear end of the suction port 38 to the peripheral edge of the suction opening 37, and this suction port packing 40 comes into contact with the mouth frame 41 of the paper filter 35. . A hose (not shown) having a suction port body (not shown) connected to its tip is detachably attached to the suction port 38 . Further, the upper part of the upper case 23 has an opening on the upper surface, and this opening is covered with a circuit component storage chamber 4 covered by the upper cover 42.
3 is formed.

Reference numeral 44 denotes an air permeable fine dust filter made of urethane or the like, which is provided facing the communication hole 32 in the dust collection chamber 25, and has a through hole 44a formed therein. This fine dust filter 44 is formed integrally with the partition wall 24 and a filter holding portion (described later) that is integrally formed with a packing 45 made of soft and elastic material such as soft vinyl chloride, which is provided at the edge of the opening 25a of the dust collection chamber 25. 45b. This packing 45 includes an annular portion 45a disposed annularly around the edge of the opening 25a of the dust collection chamber 25, and an annular portion 45a.
The filter holding part 45b is molded integrally with the partition wall 24, extends downward into the dust collection chamber 25 from the upper part of the partition wall 24, and has a surface parallel to the partition wall 24 forming a frame shape (U-shape). A protrusion 45c that protrudes rearward (toward the electric blower chamber 26 side) and passes through the hole 44a formed in the fine dust filter 44 is formed at the lower end of the filter holding part 45b. Communication hole 3 at the tip
A locking portion 45d having a diameter slightly larger than the width of 2 is formed. In addition, a protrusion 45e that protrudes forward (toward the dust collection chamber 25 side) is formed on the filter holding part 45b, and a seal that protrudes below the protrusion 45c and seals the through hole 44a when the electric blower 27 is in the suction state. A portion 45f is formed. The filter holding part 45b is formed in a U-shape as described above, and there is a ventilation part communicating with the communication hole 32 through the fine dust filter 44 above the lowest end thereof, that is, at the inner peripheral part of the filter holding part. It forms 45g.

The operation will be explained based on the above configuration. In order to hold the fine dust filter 44 facing the partition wall 24 in the dust collection chamber 25, the filter holding part 4 of the packing 45 is
After lifting the tip of filter 5a toward the dust collection chamber 25 side, remove the filter 4.
4 through the through hole 44a, and then push the locking portion 45d into the communication hole 32 from the dust collection chamber 25 side, the locking portion 45d is elastically deformed, passes through the communication hole 32, and connects the electric blower. Since the locking portion 45d returns to its original shape after entering the chamber 26, the locking portion 45d is locked in the communication hole 32. The fine dust filter 44 is connected to the partition wall 24 and the filter holding part 4.
5a and facing the partition wall 24.
It is installed within 5. At this time, the dust collection chamber 25 and the electric blower chamber 26 have a communication hole 32, a fine dust filter 44, and a ventilation section 45.
communicate via g. Next, the mouth frame 4 of the paper filter 35
1 to the clamp 36, the paper filter 35 is installed in the dust collection chamber 25, and a hose with a suction port body attached to the tip is installed to the suction port 38 to perform cleaning. Dust is collected on the paper filter 35 through the suction port and the hose. After cleaning in this way and using it for a long time, the fine dust filter 4
If the dust filter 44 becomes clogged and the air permeability deteriorates, the fine dust filter 44 can be removed and washed by performing the operation opposite to that for holding the dust filter 44.

According to the vacuum cleaner of this embodiment, the fine dust filter 44 can be collected without forming a filter holding part on the main body 1 to hold down the fine dust filter 44 to prevent dust from entering the electric blower chamber 26. Since the packing 45 provided at the edge of the opening 25a of the dust chamber 25 is held and held between the extended filter holding part 45b and the partition wall 24, the structure of the main body 1 can be simplified and the fine dust filter 44 can be held down. When the fine dust filter is installed in the dust collection chamber, there is no need to align the fine dust filter with the filter holding part of the main body 1, making handling easier. Furthermore, since the filter holding part 45b integrated with the soft packing 45 is used to hold down the fine dust filter 44, the filter holding part 45b is pushed against the partition wall 24 side, that is, the paper filter 35, by the suction force during operation of the electric blower. Since the paper filter 35 and the filter holding part 45b are moved in the direction of separation, it is difficult for the paper filter 35 to come into contact with the filter holding part 45b, so that damage to the paper filter 35 can be prevented. Therefore, the paper filter 35
Fine dust leaks from the dust collection chamber 25 or the paper filter 35 is torn.
Prevents dust from scattering inside.

Furthermore, since the locking portion 45d is locked in the communication hole 32, the filter 44 can be held more reliably with a simple structure without providing a special member for locking the locking portion 45d. . In addition, by using a soft material for the filter holding part 45b, the amount of dust collected inside increases and when the paper filter 35 strongly collides with the filter holding part 45b, the filter holding part 45b deforms and absorbs the impact. It is also possible to more reliably prevent damage to the filter 35.

Furthermore, two locking portions 45d are attached to the filter 4.
4, it not only prevents the filter 44 from falling in the front-rear direction, but also prevents it from falling in the left-right direction. In addition, a locking portion 4 is provided on the filter holding portion 45b.
Since a seal portion 45f is formed below 5d and covers the hole 44a of the fine dust filter 44, the electric blower 2
7 is in operation, the seal portion 45f made of a soft material moves toward the partition wall 24 and comes into close contact with the fine dust filter 44 due to its suction force, so that the hole 44a of the fine dust filter 44 is more reliably closed and the electric blower chamber is closed. It is possible to more reliably prevent fine dust from entering 26.

Furthermore, as described above, even if the paper filter 35 expands as the amount of collected dust increases and the paper filter 35 comes into contact with the filter holding part 45b, it comes into contact with the protrusion 45e made of a soft material. 35 can be prevented from coming into close contact with the fine dust filter 44 and increase air path resistance, and the paper filter 35 is less likely to be damaged. Moreover, this protrusion 45e
is the filter holding part 4 when attaching and detaching the fine dust filter 44.
It can also be used as a knob for lifting 5b. Furthermore, since the communication hole 32 in which the locking portion 45d is locked is formed vertically, the degree of freedom in the vertical direction of the position where the locking portion 45d is locked is increased. therefore,
Even if the position at which the locking portion 45d is locked in the communication hole 32 shifts in the vertical direction due to the thickness of the fine dust filter 44 or variations in the main body 1, the locking portion 45d can be reliably locked in the communication hole 32. can do.

In this embodiment, the protruding part 45c formed integrally with the packing 45 penetrates the fine dust filter 44, and the locking part 45d is locked in the communication hole 32, thereby separating it from the filter holding part 45b. Although the fine dust filter 44 is held between the walls 24, it is not necessary to hold the fine dust filter 44 as long as it can be held to an extent that it does not fall. Therefore, for example, the fine dust filter 44 may be held between the partition wall 24 and the filter holding part 45b using only the elastic force of the filter holding part 45b without providing the locking part 45d. In addition, although the packing 45 was explained as soft vinyl chloride,
A soft material, such as natural rubber, that can seal the lid 34 and the dust collection chamber 25 when the lid 34 is closed may be used.

If a paper filter 35 or the like is used as the fine dust filter 44 in the dust collection chamber 25, the dust will be collected on the paper filter 35, and for example, the paper filter 35 may be torn. This is provided for the purpose of preventing relatively large debris from entering the electric blower chamber 26, which may cause failure of the electric blower 27 when the electric blower 27 is damaged. dust filter 44
function can be satisfied. In this embodiment, since the fine dust filter 44 covers all of the communication holes 32, a structure is adopted in which the locking portion 45d penetrates the fine dust filter 44, but the communication hole 32 is not covered by the fine dust filter 44. Hole 3
If the area of 2 is not a problem, the locking part 45d is locked to the communication hole 32 at a position on the outer periphery of the fine dust filter 44 without passing through the fine dust filter 44, and the filter holding part 45b is separated from the locking part 45d. It is also possible to sandwich it between the wall 24. Further, in this embodiment, the ventilation portion 45g is formed on the inner circumference of the U-shaped filter holding portion 45b, but for example, the filter holding portion 45b is configured to cover the entire surface of the fine dust filter 44, and is communicated with the filter holding portion 45b. Hole 32
The ventilation portion 45g may be formed by providing holes in a lattice pattern so as to overlap with each other.

[0021]

[Effects of the Invention] As explained above, according to the vacuum cleaner of the present invention, the fine dust filter is held down by the filter holding part integrally formed with the packing without forming the fine dust filter holding part on the main body. Therefore, the structure of the main body can be simplified and the handling when attaching and detaching the fine dust filter can be facilitated. Further, when a paper filter is used in the dust collection chamber, the paper filter is not easily damaged, so that leakage of fine dust and scattering of dust within the dust collection chamber can be prevented.

[Brief explanation of the drawing]

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

FIG. 2 is a perspective view of a main part of a vacuum cleaner showing an embodiment of the present invention.

FIG. 3 is a sectional view of a main part of a conventional vacuum cleaner.

[Explanation of symbols]

21 Main body 24 Partition wall 25 Dust collection chamber 26 Electric blower chamber 32 Communication hole 34 Lid 35 Dust collection filter (paper filter) 44
Fine dust filter 45 Packing 45b Filter holding part

Claims (1)

[Claims] 1. A main body having an electric blower chamber and a dust collection chamber, an opening formed in the dust collection chamber for installing and removing a dust collection filter, a lid body for opening and closing this opening, and a lid body provided at the edge of the opening. a soft and elastic packing that is provided and comes into contact with the inside of the lid when the lid is closed; and a packing that partitions the dust collection chamber and the electric blower chamber and separates the dust collection chamber and the electric blower chamber from each other. A partition wall having a communication hole for communication, and a fine dust filter having air permeability attached to the partition wall facing the dust collection chamber side and covering the communication hole, wherein the fine dust filter is provided in the main body. At least both end portions of the fine dust filter are held by a filter holding portion that is integrally formed with the packing and interposes the fine dust filter between it and the partition wall, without forming a filter holding portion that presses the dust filter. A vacuum cleaner with special features.