JPS5934411B2 - vacuum cleaner filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filter for a vacuum cleaner, and more particularly, to a filter that filters sucked air to capture dust.

Recently, filter paper containing linter pulp or the like as a main component or woven cloth such as cotton has been used for the filters of vacuum cleaners.

Filter paper and cloth have mutually contradictory advantages and disadvantages, and filter paper is used to form [. Compared to filters made of conventional cloth, the filter is stronger and has better shape retention, and can be bent into a mountain-shaped cross section to expand the filtration area compared to the size of the vacuum cleaner itself. In addition, it has the advantage of being difficult to produce compared to filters made of cloth, but it is easily torn and has a short lifespan.Furthermore, if it gets clogged with dust, it cannot be cleaned and cannot be cleaned using an electric blower. Pressure loss occurs in the suction force, and it is difficult to remove fibrous dust caught in the valleys of bent, wavy folds, especially in the deep valleys. In addition, cloth has drawbacks such as the possibility of damaging and breaking the material, and while cloth can be washed with water, is durable and has a long life, woven materials have large filter openings, and non-woven materials have drawbacks such as being easily torn. The present invention was devised in view of the above-mentioned drawbacks, and provides a filter for a vacuum cleaner made of a material that is strong, which has the advantage of filter paper, and is washable, which is the advantage of cloth, and is strong and durable. be.

Next, the structure of an embodiment of the present invention will be explained with reference to the drawings.

, 1 is a vacuum cleaner main body, which is composed of an electric side case 2 and a dust collection side case 3 that is detachably connected to the opening of this electric side case 2. An upward locking part 4 is formed on the edge, and a clamp locking hole 5 is formed in the upper part to collect dust; an engaging part to be engaged with the locking part 4 is formed at the lower part of the opening of the side case 3. □ is formed downward, and a clamp hook body 8 that is locked in the locking hole 5 is provided at the top.

Further, on the front side of the electric side case 2, a vibration-proof support 11 made of rubber or the like is provided inside a support wall surface 10 having a ventilation part 9. The front part of the electric blower 13 is fitted and supported by the vibration isolating support 11 so that the suction side of the electric blower 13 is communicated with the air passage 12 which communicates with the air passage 12 .

Also, the rear part of this electric blower 13 is a cord reel storage part 1.
The electric blower 13 is supported by a vibration-proof support 16 formed of rubber or the like on a partition wall 15 forming the electric blower 4, and the discharge side of the electric blower 13 is formed on the back side of the electric side case 2 through an air exhaust path IT. It communicates with the exhaust hole 18. Further, a code reel 19 is rotatably supported in the cord reel storage portion 14 by a rotating support shaft 20 and biased in the winding direction by a mainspring spring 20a.

Further, wheels 21 are mounted on both sides of the electric power side case 2 .

Further, a handle portion 22 is formed on the upper part of the electric-powered side case 2. Next, a suction port 23 to which a hose connected to a suction port body such as a floor brush is connected is formed on the front surface of the dust collection side case 3, and the open end of this suction port 23 projects inward.

In addition, a filter device 2 is installed at the rear opening of this dust collection side case 3.
4 is provided.

This filter device 24 is composed of a primary filter 26 provided on the front surface of a filter support 25 and a thick plate-like secondary filter 2γ. A packing 29 serving as a support frame is fitted around the periphery of the filter support 25 of the filter device 24. This packing 29 is formed with a ridge 30 that is brought into close contact with the inner peripheral surface of the dust collecting side case 3 and a ridge 31 that is brought into close contact with the support wall surface 10 of the electric power side case 2. Next, the primary filter 26 is formed of, for example, a net-like body having mesh-like vents that are coarser than 50 mesh,
It is provided integrally with the front opening 32 of the support body 25.

Also, the secondary filter 2? The thick material 28 is made by heating a large number of single fiber layers of high melting point plastic fibers coated with a low melting point synthetic resin on the surface and bonding them together so that they are air permeable and have countless air bubbles. Bent material 3 with saw blade shape in cross section made of the same material heated and pressed into a sheet shape
3, and there is a space 34 on the exhaust side of the former thick material 28.
The latter material 33 is polymerized and integrated around the material 33 via the material 33.

The outer peripheral end surface of the secondary filter 21 is integrally provided with the tip of the packing 29 in an airtight manner.

Further, the thick material 28 and the sheet-like material 33 are obtained by the following method.

First, reel 4? A long length of polypropylene fiber (high melting point plastic fiber) A is rolled into the guide roller 48.
For example, ethylene vinyl acetate (a low melting point synthetic resin with a melting point of 80° C.) B is immersed in a trichlene solution stored in a tank 49 through the wafer.

After removing the solvent from the coated fiber C in a drying oven 51 via a roller 50 disposed in a tank 49, the fiber D with a thin coating film is transferred to a winder 53 via a guide roller 52. Twist and wind up. A thin film B is applied to the surface of the polypropylene fiber A obtained in this way. Then, this fiber D is cut into lengths of about 10 cm and intertwined with each other to form a cotton-like shape.
Then, only the resin B having a low melting point on the surface is melted with hot air at about 120° C., and the members in contact with each other are fused together. The material thus produced is molded into a thick plate shape to obtain the thick material 28 having a large number of air bubbles. Furthermore, a piece of the same material as this thick material 28 was heated to 100% in advance in an electric furnace.
The sheet material 33 is obtained by heating for several minutes at a temperature of 140 DEG C. and heat-pressing it to form a large number of folds having a sawtooth cross section using a hot press at a surface temperature of 140 DEG C. This sheet-like material 33 is heated and pressed to increase the fiber density, so it has a finer mesh than the thick material 28. Then, the thick material 28 and the sheet-like material 33 are bonded by heat and pressure around the thick material 28 and the sheet material 33 to form a superposition. In addition, the picture materials 28 and 33
When polymerizing the image materials 28 and 33, a pocket member 35 is provided at the bottom of the space 34 formed between the image materials 28 and 33, and a fine dust collection portion 35 is provided.
form a. Further, a vertical hole 36 is formed from the fine dust reservoir portion 35a to pass through the pocket member 35, the material 33, and the packing 29.

The secondary filter 2T is fitted onto the support 25, the peripheral edge of the exhaust surface side is engaged with a stepped portion 46 formed on the support 25, and the loop hole 36 is closed by the support 25.

Further, a handle 39 is formed on the upper part of the dust collecting side case 3, and a swingable ring 40 is provided on the lower surface.

Then, the filter device 24 is fitted through the rear opening of the dust collection side case 3 and held in the inner dust collection section 41 of the dust collection side case 3, and the primary filter 26 is directed backward toward the open end of the suction port 23. . Also, the packing 29 of the filter device 24
A dust removing body 43 which removes dust adhering to the filter 28 by applying an impact to the troughs of the folds of the filter 28 formed of filter paper is rotatably supported on a support frame 42 supported by the filter paper.

This dust removal body 43 is provided with a handle 44 . Next, the operation of this embodiment will be explained.

The air sucked through the suction port 23 by the electric blower 13 flows into the dust collection part 41, gradually expands the cross-sectional area of the juvenile flow, and is sucked in from the suction surface of the primary filter 26.
6 and the secondary filter 2T, the air is filtered through the electric blower 13, and is discharged from the electric side case 2 through the exhaust hole 18.

Incidentally, the primary filter 26 captures coarse dust such as hair and fibrous materials. In addition, the secondary filter is made of 2T thick material 28
The fine dust is captured by the sheet material 33.
The fine dust and fine dust are finally captured and this material 3
3, the dust captured by
It is accumulated in a.

During cleaning, by removing the secondary filter 2T from the support 25, the through hole 36 is opened and the fine dust reservoir 35 is opened.
Dust inside a can be easily removed.

In the above embodiment, the sheet-like material 33 is superimposed on the exhaust side of the thick material 28, but the structure is not limited to this. In this case, since the sheet material 33 has fine mesh, there is a large resistance to air suction, and this resistance creates an air current along the filter surface, making it possible to easily remove dust attached to the filter surface. Can reduce clogging. According to the present invention, as a filter for a vacuum cleaner, a large number of single fiber layers of high melting point plastic fibers coated with a low melting point synthetic resin on the surface are heated and bonded together to have air permeability and countless air bubbles. The same material as the thick material is heat-pressed onto one side of the thick material and polymerized to form a sheet.This plastic fiber is highly hydrophobic and does not dry easily even after washing with water. Because it is durable and does not change color due to scratches,
The filter can be washed and pressure loss due to clogging can be prevented, resulting in improved filtration efficiency and longer life.

In addition, the single fibers of the plastic fibers have excellent tensile strength and are strong even when thin fibers are used.Thus, by using thin fibers, the pore diameter of the filter can be made small and the trapping effect is excellent, and the surface of the fibers is smooth and easy to rub. As a good filter, it is easy to remove dust adhering to the surface.Moreover, it has appropriate elasticity and excellent fatigue resistance, and the vibrations necessary for dust removal are transmitted to every corner of the filter. It has good dust removal properties. In addition, since the sheet-like material is obtained by heat-pressing, the fibers on the surface melt together and become integrated, so they do not fray and have excellent shape retention.
The filtration area can be expanded by forming the cross-section into a saw-blade shape during heat-pressing, and the shape will not shift even after washing with water, and the strength will not deteriorate due to friction. Moreover, it can be obtained at low cost. In addition, since the art material is polymerized and integrated, if the art material is heat-pressed around it and polymerized, the polymerization will not bend when washed with water, and the fibers will become loose. Pressure loss due to clogging can be easily recovered. Also,
Thick material is placed on the suction side of the sheet material, so
This thick, breathable material can capture fibrous dust and fine dust, increasing the amount of dust suction, and the sheet-shaped material can reduce the amount of fine dust to be filtered, improving filtration performance. It can be kept for a long time, and there is less dust attached to the sheet-shaped filter.The number of times the filter is removed can be reduced, and there is no need to rub the filter with a brush or the like to remove dust, so there is no risk of damage.

In addition, since a sheet-like material is placed on the suction side of the thick material, this sheet-like material has fine mesh, which creates a large resistance to air suction, and this resistance reduces the airflow along the filter surface. The dust adhering to the filter surface is easily removed, reducing clogging of the filter, and the dust is returned to the dust collection section in front of the filter, reducing the amount of dust passing through the filter.

Furthermore, since the outer peripheral end surface of the thick-walled material or sheet-like material is integrally molded with the support frame, the pool cover can be easily attached and fixed more airtightly.

In addition, by creating a space between the thick material and the sheet-shaped material, even if dust is removed from the back of the filter, there will be a part where the dust will fall and collect. If a fine dust reservoir is formed between the image materials during this process, the dust that has fallen into the fine dust reservoir will not be sucked in again (a filter that is highly durable and easy to handle can be obtained).

Further, by forming a sheet-shaped material by heat-pressing into a saw-blade shape in cross section, not only can the filtration area be increased, but also spaces can be easily created between the image materials.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a vacuum cleaner equipped with a filter showing an embodiment of the present invention, Fig. 2 is a process diagram showing the manufacturing process of the fibers of the raw material, and Fig. 3 is an enlarged view showing a single fiber of the same fiber. FIG. 4 is a partially enlarged view showing the bonding state of the same fibers, FIG. 5 is a perspective view showing the secondary filter, and FIG. 6 is a cross-sectional plan view of the same. 2T...Secondary filter of the filter of the present invention, 2
8... Thick material, 33... Sheet-shaped material, 34... Space, 35a...
・Fine dust collection part, A...High melting point plastic fiber,
B...Low melting point synthetic resin, D...Single fiber.

Claims (1)

[Claims] 1. One side of a thick material made by heating a large number of single fiber layers of high melting point plastic fibers coated with a low melting point synthetic resin on the surface and bonding them together so that they are air permeable and have countless air bubbles. In addition, the same material as this thick material is heated and pressed to form a sheet, and the outer peripheral end surface of the thick material or sheet material is integrally molded with a support frame. Features vacuum cleaner filters. 2. The vacuum cleaner filter according to claim 1, wherein the image material is polymerized so as to form a space between the thick material and the sheet-like material. 3. Claims 1 and 2, characterized in that the sheet-like material is polymerized on the exhaust side of the thick material.
Vacuum cleaner filter as described in section. 4. Claims 1 and 2, characterized in that the sheet-like material is polymerized on the suction side of the thick material.
Vacuum cleaner filter as described in section. 5. The filter for a vacuum cleaner according to claim 2, wherein a fine dust trap is formed between the thick material and the sheet material.