JPS6057847B2 - 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.

Conventionally, filter paper, for example, has been used for the filter of this type of vacuum cleaner, and in order to expand the filtration area compared to the size of the vacuum cleaner body, the filter has been bent into a mountain-shaped cross section to form parallel wave-shaped folds. is used.

However, when using a wave-shaped filter, the smaller the angle of the peaks and troughs of the folds, the larger the surface area can be secured.
When the angle exceeds a certain limit, it is difficult to remove dust trapped in the valleys of the bent wavy folds, and in particular, fine cotton dust that is stuck deep in the valleys cannot be easily removed with a brush. It was impossible. In view of these points, the present invention provides a filter with concentric corrugated folds and is formed into a substantially dome shape with a concave part on the dust collecting surface side, which makes it possible to expand the filtration area and reduce vibration for removing dust. is transmitted to the entire filter, and dust can be removed reliably.Furthermore, by forming this filter from non-woven plastic fiber, it is easy to form identical circular folds, and it is washable, strong and durable. It provides filters for vacuum cleaners.

Next, the structure of an embodiment of the present invention will be explained with reference to the drawings. Reference numeral 1 designates an electric side case body serving as a main body case constituting one of the main body case forming members, a handle (not shown) is attached to the upper part, and a space 3 is connected to one side of the interior through a partition wall 2.
is formed, and in this space 3, a cord reel 5 for winding and storing a cord 4 connected to a power source is biased in the winding direction by a mainspring spring 6a on a rotating support shaft 6, and can be rotated vertically. It is pivoted on.

In addition, the bottom plate 7 of the electric side case body 1 is provided with a ventilation hole 7a.
is formed, and an attachment holding portion 8 protrudes downward from the upper inner surface of the electric power side case body 1, facing the vent 7a.
is formed.

Further, a vibration-proof support body 9 formed of rubber or the like is provided continuously from the inner circumferential surface of the electric side case body 1 and the partition wall 2, and the vibration-proof support body 9 is formed from rubber or the like. The lower part of the electric blower 11 is fitted and supported by the vibration-proof support 9 so that the suction side of the electric blower 11 is communicated with the air passage 10 communicating with the air passage 7a, and the suction side and the discharge side are airtightly separated. . The upper part of the electric blower 11 is supported by the mounting and holding part 8 via a vibration-proof support 12 made of rubber or the like, and the discharge side of the electric blower 11 is connected to the electric side through an exhaust air passage 13. It communicates with an exhaust hole 14 formed on one side of the case body 1. Next, reference numeral 15 denotes a dust collection side case body which serves as a dust collection case constituting the other main body case forming member, and is adapted to accumulate dust captured by the filter 16.

A clamp 17 provided on the electric side case body 1 placed on the upper part of this dust collection side case body 15 is engaged with a locking protrusion 18 provided on the upper edge of this dust collection side case body 15. Both case bodies 1 and 15 are detachably connected. A suction port 19 is formed on one side of the dust collection side case body 15 to which a suction pipe (not shown) such as a flexible hose is connected for ventilation to a suction port body such as a floor brush. The open end projects inward. The suction port 19 is communicated with the lower side of the filter 16, that is, with the dust collection section 20 of the dust collection side case body 15.
Further, reference numeral 21 denotes a backing body that is clamped to the joint between the two case bodies 1 and 15. On this backing body 21, a support frame 22 that supports the filter 16 and a dust removal body holding member 23 are attached.
The outer periphery of is held in place.

In addition, the filter 16 is formed by heat-pressing a breathable non-woven fabric formed by mutually bonding high-melting point plastic fibers coated with a low-melting point synthetic resin on the surface to form concentric folds 16a having a substantially wave-shaped cross section. This provides a wide filtration area and good dust removal performance.

Further, the material of this filter 16 can be obtained by the following method. First, a long length of polypropylene fiber (high melting point plastic fiber) A is wound around the reel 28 onto the guide roller 29.
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 30 via a .

After removing the solvent from the fiber C whose surface has been coated via a roller 31 disposed in a tank 30 in a drying oven 32, the fiber D with a thin coating film is transferred via a guide roller 33 to a winding machine 34. Wind it up. The fiber D thus obtained has a thin coating B on the surface of the polypropylene fiber A.
is coated. Then, the fibers D are cut into lengths of about WG and intertwined with each other to form a cotton-like cloth (wet). Only the resin B with a low melting point on the surface is melted with hot air at about 120°C and brought into contact with each other. It brings together like-minded people.

Furthermore, this cotton-like non-woven fabric was heated in advance in an electric furnace for 100%
℃ for a few minutes, and heat and press it into a fully curved dome shape or shape with slack in advance using a pot press with a surface temperature of 140℃, and then heat and press this dome shape or shape with slack into concentric circles. The folds 16a having a substantially wave-shaped cross section are formed.

The cross section of the folds 16a draws a continuous curve, and the entire filter is formed into a substantially dome shape with a protruding center. In the manner described above, filter materials as shown in FIGS. 5 and 6 are obtained. And this filter 16 is attached to the support frame 2
2 and is attached to the dust collection side case body 15 with the concave side of the approximately dome shape facing the dust collection surface.

Further, the support frame 22 is also formed of the same material as the filter 16 or a resin having a lower molding temperature, and is integrated with the filter 16.

Further, the holding member 23 provided on the upper surface side of the filter 16, that is, the suction side of the electric blower 11, is formed with a vent portion 23a, and a support protruding from the dust removal body 24 is provided approximately at the center thereof. Guide hole 2 through which the rod 25 is inserted so that it can move forward and backward
3b is formed. Next, the dust removal body 24 is formed with a ventilation hole (not shown) in a substantially grid shape, and a support rod 25 protruding from the center thereof is provided to form a guide hole 25 of the holding member 23.
3b, and a push button operating section 26 is provided at the tip thereof, and this push button operating section 26 and the holding member 2
Both ends of a coil-shaped spring 27 interposed between the support rod 25 and the support rod 25 are locked.

The support rod 25 is urged upward by the spring 27, and the dust removal body 24 located between the filter 16 and the holding member 23 is not always in contact with the filter 16, and the holding member It is located on the 23 side. In addition, a free wheel 35 is provided on the lower front side of the dust collecting side case body 15, and a fixed roller 36 is provided on the rear side.

Next, to explain the operation of this embodiment, when cleaning, the electric side case body 1 is placed on the dust collection side case body 15 with the backing body 21 clamped, and this electric side case body 1
The clamp 17 is locked to the locking protrusion 18 of the dust collecting side case body 15 to connect both the case bodies 1 and 15.

When cleaning work is performed by driving the electric blower 11 in this state, the air sucked in from the suction pipe (not shown) is introduced into the dust collection part 20 of the dust collection side case body 15 through the suction port 19, and further,
The air filtered by the filter 16 passes through the ventilation port (not shown) of the dust removal body 24 and the ventilation port portion 23a of the holding member 23, and is sucked into the suction side of the electric blower 11 through the ventilation port 7a of the bottom plate 7. is sent into the electric side case body 1, and the exhaust hole 1
It is discharged from 4. Then, the dust captured by the filter 16 is accumulated in the dust collecting section 20 of the dust collecting side case body 15.

Further, when removing dust from a clogged filter, the electric power side case body 1 is removed and the suction port 19 is closed with a plug or the like.

In this state, by repeatedly pressing the push button operation part 26 against the spring 27, the filter 16 is struck by the dust remover 24, vibration is transmitted to the entire filter 16, and the dust adhering to the filter 16 is removed. is collected by falling into the dust collecting section 20. Furthermore, since the filter 16 is made of nonwoven plastic fiber, it can be washed with water, and since the folds 16a are formed by heat-pressing, there is no need to re-fold the filter after washing.

In addition, as a dust removal mechanism, the dust removal body 2 shown in the above embodiment is used.
In addition to applying impact force or vibration to the filter 16 from the back surface of the filter 16, it is also possible to use a mechanism that applies continuous impact force or vibration.

The filter material of the filter 16 is formed by heat-pressing a breathable non-woven fabric made by bonding together high melting point plastic fibers coated with a low melting point synthetic resin on the surface, thereby making the filter highly hydrophobic. The filter can be washed with water, pressure loss due to the filter can be prevented, and it can be used efficiently for a long period of time.Furthermore, the monofilament of the plastic fiber has excellent tensile strength, and the pore size of the filter can be reduced by using thin fibers. In addition, the fiber surface is smooth and has good dust removal properties, and it is strong and has appropriate elasticity and excellent fatigue resistance. Just by applying vibration to the center of the filter, the entire filter is vibrated. The dust removal effect can be increased, and the material is easy to mold and has a seamless structure, and it does not lose its shape even when washed with water, making it easy to handle.

According to the present invention, the filter of the vacuum cleaner is provided with concentric corrugated folds in cross section, and the dust collecting surface side is concave to form a substantially dome shape. Vibrations or shocks applied to the filter are transmitted to the entire filter, making it easy and reliable to remove dust adhering to the filter, making it possible to use it continuously for a long period of time. By simply applying vibration to the ends, that is, the center, this vibration is easily and uniformly transmitted to the entire filter, resulting in an excellent dust removal effect.Furthermore, by forming folds with the same circular cross-sectional wave shape, the overlapping area can be reduced. The vibration that is further magnified and applied to the center gives vibration and deformation to the entire filter, making it possible to reliably remove dust.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a vacuum cleaner equipped with a filter showing one embodiment of the present invention, Fig. 2 is a process diagram showing the manufacturing process of the fibers that constitute the material of the filter, and Fig. 3 is a monomer of the same fibers. FIG. 4 is an enlarged perspective view showing the fibers, FIG. 4 is an enlarged view showing the bonded state of the fibers, FIG. 5 is a plan view showing the filter, and FIG. 6 is a longitudinal sectional side view of the same. 1...Electric side case body that becomes the main body case, 11...Electric blower, 15...Dust collection side case body that becomes the dust collection case, 1
6...Filter, 16a...Pleats, A...High melting point plastic fiber, B...Low melting point synthetic resin.

Claims (1)

[Scope of Claims] 1. A vacuum cleaner consisting of a main body case incorporating an electric blower and a dust collection case having a filter detachably attached to the main body case, wherein the filter has a concentric wave-shaped cross section. 1. A filter for a vacuum cleaner, characterized in that it is formed into a substantially dome shape with pleats and a concave part on the dust collecting surface side. 2. The electric cleaner according to claim 1, characterized in that it is made by heat-pressing a breathable non-woven fabric formed by mutually bonding high-melting point plastic fibers coated with a low-melting point synthetic resin on the surface. machine filter.