JPS5937103B2 - vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a vacuum cleaner, and more particularly to a filter that filters sucked air and traps dust.

[Technical background of the invention]

Conventionally, in this type of vacuum cleaner, a filter made of, for example, filter paper has been used, but in order to expand the filtration area compared to the size of the vacuum cleaner body, such a filter was developed in Japanese Utility Model Application No. 48-71657 As described in the above publication, a structure is adopted in which the cross section is bent into a mountain shape to form wavy folds.

[Problems with background technology]

However, when the filter is wave-shaped, the smaller the angle of the peaks and valleys of the folds, the larger the surface area can be secured, but when the angle exceeds a certain limit, it becomes difficult to remove dust trapped between the valleys of the curved, wavy folds. Fine cotton dust that is deeply embedded in the valleys cannot be easily removed with a brush, making it impossible to use continuously for a long time.

[Purpose of the invention]

The present invention was developed in view of these points, and it is possible to expand the filtration area by forming a large number of folds, and in addition, the depth of the folds is almost eliminated in the center, preventing dust from getting caught (and improving dust removal performance). To provide a vacuum cleaner equipped with an excellent filter.

[Summary of the invention]

The present invention provides a dust collection section that incorporates an electric blower and communicates with a suction port, and the dust collection section is equipped with a filter disposed between the suction port and the suction side of the electric blower. The filter has radial folds that are shallow at the center and deep at the periphery to prevent dust from getting caught between the folds at the center of the filter.

[Embodiments of the invention]

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

Reference numeral 1 designates an electrically powered side case body serving as one of the main body case forming members, a handle (not shown) is attached to the upper part, and a space 3 is formed on the inside side with a partition wall 2 interposed therebetween.
A coat reel 5 on which a cord 4 connected to a power source is wound and housed is rotatably supported on a rotary shaft 6 so as to be vertically biased by a spiral spring 6a in the winding direction.

Further, a vent hole γa is formed in the bottom plate 7 of the electric side case body 1, and an attachment holding portion 8 that protrudes downward from the upper inner surface of the electric side case body 1 is formed opposite to this vent hole 1a. ing.

Further, a vibration-proofing support 9 formed of rubber or the like is provided continuously from the inner peripheral surface of the electric side case body 1 and the partition wall 2. 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 10, 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 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 collecting side case body serving as the other main body case forming member, in which dust captured by the filter 16 is accumulated.

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 to form a vacuum cleaner body.

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.

Reference numeral 21 denotes a backing body which is sandwiched between the joints of both the case bodies 1 and 150, and this backing body 21 includes a support frame 22 that supports the filter 16 and a dust removal body holding member 23.
The outer periphery of is held in place.

The filter 16 is made of 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, and is heat-pressed to form a radial shape that is shallow in the center and deepens toward the periphery. folds 16a are formed,
The lacrimal surface area is widened and dust removal performance is improved.

The filter 16 is formed in a substantially flat shape with the radial folds 16a on the same plane as the center, or in an umbrella shape with the center projecting (an umbrella shape is shown in FIG. 1).

Further, the material of this filter 16 can be obtained by the following method.

First, a polypropylene fiber (high melting point plastic fiber) A wound in a long length on a reel 28 is passed through a guide roller 29 to a trichloride of, for example, ethylene vinyl acetate (a low melting point synthetic resin with a melting point of 80° C.) B stored in a tank 30. Immerse in solution.

After removing the solvent from the fiber C whose surface has been coated through a row 231 disposed in a tank 30 in a drying oven 32, the fiber C with a thin coating film is passed through a guide roller 33 to a winding machine 34. Wind it up.

The fibers obtained in this way are polypropylene fibers A
A thin coating B is applied to the surface of the .

Then, this fiber is cut into lengths of approximately 10 cTl and intertwined with each other to form a web of approximately 120 cTl.
Only the resin B having a low melting point on the surface is melted with hot air at a temperature of 0.degree. C., and the comrades that are in contact with each other are fused together.

Furthermore, this cotton-like non-woven fabric was heated in advance in an electric furnace for 100%
℃ for several minutes, and then heat-pressed using a hot press at a surface temperature of 140°C to form folds 16a that are shallow in the center and deep in the periphery to form a roughly sheet-like sheet as shown in FIGS. 5 and 6. Materials are obtained.

Further, by compressing the peripheral edge of this material inward, an umbrella-shaped material as shown in FIG. 7 can be obtained.

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

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 in a movable manner
3b is formed.

Next, the dust removing body 24 is formed with a ventilation hole (not shown) in a substantially grid shape, and a support rod 25 is provided that projects approximately at the center so as to project into the guide hole 23b of the holding member 230. A push-button operation section 26 is provided at the tip of the push-button operation section 26, and both ends of a coil-shaped spring 270 interposed on the support rod 25 are locked between the push-button operation section 26 and the holding member 23.

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, but is on the side of the holding member 23. It is located in

In addition, a free wheel 3 is provided on the lower front side of the dust collecting side case body 15.
A fixed roller 36 is provided on the rear side of 5.

Next, to explain the operation of this embodiment, when cleaning, the electric side case body 1 is placed on the dust collecting side case body 15 with the backing body 21 sandwiched between the electric side case body 1 and the electric side case body 1.
The clamp 17 is locked to the locking protrusion 18 of the dust collection side case body 15 to connect both case bodies 1.15.

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 dust removal body 240 vent (not shown) and the vent portion 23a of the holding member 23, and is sucked into the suction side of the electric blower 11 through the vent lower a 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.

In addition, the filter 16 is made of non-woven plastic fibers, so it can be washed with water, and it can be heated and pressed to form folds 1.
6a, there is no need to re-crease after washing.

In addition, as a dust removal mechanism, the dust removal body 2 shown in the above embodiment is used.
The mechanism is not limited to one that applies impact force or vibration by hitting the filter 16 from the back surface with a hammer 4, etc., but it is also possible to use a mechanism that applies continuous impact force or vibration.

The filter 16 is formed into a substantially flat shape with the radial folds 16a on the same plane as the center, so that there is no depth at all in the center, and this substantially flat filter 1
By compressing the periphery of 6 inward, it can be formed into an umbrella shape with the center protruding.In this case, the periphery is more securely fixed than a simple conical surface, and the tip of the center tends to be more flexible. When vertical vibrations and impact forces are applied from the center, the vibrations and impact are efficiently transmitted to the entire surface, making it easier to remove dust and thus allowing continuous use for long periods of time.

Further, as in the above embodiment, the filter material is formed by heat-pressing a breathable non-woven fabric formed by sequentially bonding high melting point plastic fibers coated with a low melting point synthetic resin on the surface. The plastic fibers are highly hydrophobic and dry easily even when washed with water, and are durable without staining, discoloring, or discoloration, making it possible to clean the filter, prevent pressure loss through the filter, and improve filtration efficiency (longer life).

In addition, the single fibers of the plastic fibers have excellent tensile strength and are strong even when they are thin fibers.Thus, the pore size of the filter can be made small by using thin fibers, and the trapping effect is excellent.Furthermore, the surface of the fibers is smooth and easy to rub, and the filter 16, it is easy to remove dust attached to the surface and has good separability, and it has appropriate elastic force and excellent fatigue resistance, and the vibration necessary for removing dust is easily transmitted to every corner of the filter, making it easy to remove dust. It's good.

In addition, since the material is obtained by heat-pressing a nonwoven fabric with bonded fibers, the fibers on the surface are melted together and integrated, so they do not fray, have excellent shape retention, and are resistant to friction etc. It is strong and durable, with no deterioration in strength.

In addition, the radial folds 16a can be easily formed during heat compression bonding, and a seamless structure is obtained, and the shape does not shift even when washed with water, and there is no need to re-crease the folds after washing. It becomes easier.

〔Effect of the invention〕

According to the present invention, the vacuum cleaner filter has radial folds that are shallow at the center and deep at the periphery, so a large number of folds can be formed, and the filter has a p The area can be increased considerably, and since the depth of the folds is almost eliminated in the center where dust tends to adhere, dust is less likely to get caught in the valleys of the folds.

[Brief explanation of drawings]

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. 5 is a plan view showing the filter, Fig. 6 is a longitudinal cross-sectional side view of the above, and Fig. 7 is a filter of another embodiment. FIG. 1...The electric side piece that makes up the vacuum cleaner body, 1
DESCRIPTION OF SYMBOLS 1... Electric blower, 15... Dust collection side case body constituting the vacuum cleaner body, 16... Filter, 16a... Radial folds, 19・・・・・・
Suction port.

Claims (1)

[Claims] 1. A dust collection part is provided which has a built-in electric blower and communicates with the suction port, and this dust collection part is equipped with a filter installed between the suction port and the suction side of the electric blower, and this filter has a central part that is connected to the suction side of the electric blower. A vacuum cleaner characterized by forming radial folds that are shallow and deep at the periphery.