JPS596747Y2 - small vacuum cleaner - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improved structure of a small vacuum cleaner, particularly the dust collection mechanism.

The dust collection filter of a small vacuum cleaner generally uses a dust collection bag made of cut cloth in the shape of a cylinder or cone, but its size is limited by the size of the dust collection cover. Therefore, it is difficult to increase the surface area for dust collection.

For this reason, it has been considered to increase the dust collection surface area by bending a flat filter made from non-woven fabric into a corrugated shape. The filter is placed very close to the intake port, and since the intake port is equipped with a check valve made of a rubber plate supported at the top, the main flow of air taken in from the intake port is The direction is bent downward by the check valve, so that it mainly passes through the lower part of the filter.

For this reason, the filter only functions locally and causes local damage, shortening the life of the filter.

Also, because of its wavy shape, it has the disadvantage that dust accumulates in the troughs and is easily visible.

This idea is based on a small vacuum cleaner in which a wave-shaped dust collection filter that fits into the dust collection cover is placed close to the intake port, and the wave-shaped ridgeline of the filter is arranged so that it extends in the vertical direction. Even if the flow direction of the air taken in from the intake port is bent downward, the air tends to flow in the direction of the ridgeline, so the air is guided to the top of the filter so that the entire surface of the filter can function effectively. In addition, since there is no shelf effect, dust does not accumulate in the troughs of the waveform, preventing clogging.Also, the filter has a symmetrical shape and is fitted so that it can be changed vertically, dispersing the contact area of the intake air vertically. To provide a small-sized vacuum cleaner that can prevent local damage and extend the life of the filter, and further improve the effective area of the filter relative to its material area by forming the filter into a rectangular shape that is elongated in the vertical direction. That is.

An embodiment of this invention shown in the figure will be described below.

That is, first, in FIG. 1, reference numeral 1 denotes a body in which a motor 2 and a centrifugal fan 3 fixed to the motor shaft are housed, and a handle 4 is integrally constructed in the upper part of the body. being intimidated.

This body 1 is constructed from two symmetrical parts that are divided into two parts in the left and right direction by a mold.

Reference numeral 5 denotes a fan force part which is formed integrally with the body 1 and faces the fan 3 to guide air to the center of the fan 3; A holding member 7 for guiding the air sent out to the side rearward; 7 is a dust collection force bar having a bowl shape and having an intake port 8 at its front end and detachably connected to the body 1; This check valve is made of a rubber plate that is fixed to the upper part of the intake port B and rotates around the fixed part as a fulcrum.

Reference numeral 10 denotes a mounting frame 1 fitted into the rear opening of the dust collecting cover 7.
This is a wave-shaped dust collection filter fixed to the body 1, and the filter can be removed from the cover 7 together with the mounting frame 11 by uncoupling the cover 7 and the body 1.

Note that a ring-shaped packing 12 is attached to the outer peripheral fitting portion of the mounting frame 11 in order to maintain airtightness.

The ridges of the waveform of the filter 10 protrude into the dust collection cover 7, and face the air intake port 8 with an interval g smaller than the vertical dimension l1.

Further, as clearly shown in FIG. 2, the ridge line of the waveform of the filter is set to extend in the vertical direction of the machine, and furthermore, it is shaped into a rectangle in which the vertical dimension l1 is larger than the horizontal dimension l2 when viewed in the longitudinal direction of the machine. ing.

As shown in FIG. 2, the mounting frame 11 holding the filter 10 has a symmetrical shape so that it can be fitted into the rear opening of the dust collecting cover 7 so as to be vertically adjustable.

13a and 13b are retaining pieces that are provided at the lower part of the joint between the body 1 and the cover 7 and are removably engaged with each other; One of the locking pieces 14a is integrally fixed to a set button 15 which is manually operated.

Reference numeral 16 is provided on the handle 4 portion of the body 1, and is connected to the motor 2.
This is a switch that cuts off and on the power supply.

17 and 18 use the structure shown in FIGS. 3 and 4, and when the machine is in use, the fitting portions 17a and IB are connected to the intake port 8, respectively.
A is a flat-shaped suction port 17 that is selectively fitted and guides the intake air into the dust collecting cover 7;
The suction port 17 is located in a fitting recess 19 (see FIG. 5), which is formed in a dogleg shape and extends in the front-rear direction on the upper part of the dust collecting cover 7, facing the engaging piece 14b. The fitting part 17a is fitted and held in the upper front part of the dust collecting cover 7.

In this case, the front upper part of the dust collecting cover 7 is formed with a plane part 20 that is inclined to follow the shape of the suction port 17.

Further, the above-mentioned vine-shaped suction port 18 is an insertion port 2 which also serves as an exhaust port and opens toward the rear at the lower part of the above-mentioned body 1.
It is inserted and stored in 1.

This storage utilizes the space inside the body 1 that is left over from the outer circumference of the motor 2, which has a diameter smaller than that of the fan 3.

Incidentally, although not shown, 22 is a grommet 1 for connecting the motor 2 switch 16 and an external power source and pulling out the cord.

Next, the operation of the device configured in this manner will be explained.

When cleaning, first connect a cord (not shown) to a power source (for example, a car battery), and then connect the suction ports 17 and 18.
, and remove any of them, for example, the fitting part 17 of the suction port 17.
a into the intake port 8.

When the switch 16 is turned on in this state, the fan 3 rotates together with the motor 2, and the air sucked in from the suction port 17 is discharged from the insertion port 21 via the check valve 9 and the filter 10.

Therefore, by holding the handle 4 and moving the suction port 17 over the surface to be cleaned, for example, the interior of the vehicle can be cleaned as desired.
Dust that is prevented from passing through by the filter 10 can be collected in the dust collection cover 7.

In this case, the filter 10 that blocks the passage of dust has a wave shape as described above, and since the ridge line is formed to extend in the vertical direction, there is no shelf effect due to the wave shape, and the dust falls downward along the ridge line. This prevents dust from accumulating in the troughs of the corrugations, thereby preventing clogging.

Furthermore, the air taken in from the intake port 8 is bent downward by the check valve 9 and reaches the filter 10 soon after its flow direction is corrected (the filter 10 is disposed close to the intake port 8). ), but in this case also filter 1
Since the ridge line 0 is in the vertical direction, the wind can also flow upward along the ridge line direction, allowing the entire surface of the filter 10 to function effectively.

Further, since the filter 10 has a rectangular shape that is elongated in the direction of its ridgeline, the effective area of the filter 10 relative to the material area can be improved.

That is, in a small vacuum cleaner such as this embodiment in which the filter 10 is disposed very close to the intake port 8, the spread of the main air sucked from the intake port 8 is also relatively small, and the filter 10 is disposed very close to the intake port 8. Since wind is difficult to disperse in the direction perpendicular to the ridge line of 10, the dimension in the direction perpendicular to the ridge line (left and right direction) is made smaller.
By increasing the vertical dimension accordingly, the effective area of the filter can be increased and the area of the material can be reduced.

On the other hand, the mounting frame 11 holding the filter 10 has a symmetrical shape so that the filter 10 can be fitted to the dust collection cover 7 in a vertically adjustable manner, so that dust accumulated on the dust collection cover 1 can be removed. Since the filter 10 is fitted to the dust collection cover 7 in an uncertain manner in the vertical direction, even if the part of the intake air that contacts the filter 10 is eccentric downward, the part of the filter that the air contacts can be dispersed vertically. Therefore, local damage to the filter 10 can be prevented and its life can be extended.

When the machine is to be stored after cleaning, the suction ports 17 and 18 can be fitted into the insertion openings 21 of the fitting recesses 19 and housed integrally with the machine, as shown in FIG.

As described above, in this invention, a wave-shaped dust collection filter that is fitted into a dust collection cover is placed close to the intake port, and the intake air is directed substantially upward and downward with respect to the filter by a check valve. In a small vacuum cleaner that hits the filter eccentrically, the ridgeline of the waveform of the filter is set to extend vertically along the eccentric direction, so even if the intake air hits the filter eccentrically in the vertical direction, the waveform ridgeline of the filter extends vertically along the eccentric direction. It is possible to allow the entire surface of the filter to function effectively by allowing intake air to flow, and also to eliminate the shelf effect caused by the corrugations, thereby preventing dust from accumulating in the troughs of the corrugations, thereby preventing clogging.

Further, by forming the filter into a rectangular shape in which the vertical dimension is longer than the horizontal dimension, the effective area of the filter can be increased, and at the same time, the material area can be decreased.

Furthermore, the fitting part of the filter mounting frame has a symmetrical shape so that it can be fitted vertically, thereby dispersing the contact area of the intake air vertically and preventing local damage to the filter. This makes it possible to extend the life of the vacuum cleaner and provide a vacuum cleaner with extremely high practical value.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing one embodiment of this invention, Fig. 2 is a perspective view showing the dust collection filter of Fig. 1, and Fig. 3 and 4 are the
FIG. 5 is a sectional view taken along line V-1 in FIG. 1, and FIG. 6 is a rear view showing the insertion port in FIG. 1. In the figure, 1 is the body, 2 is the motor, 3 is the fan, 7 is the dust collection cover, 8 is the intake port, 9 is the check valve, 10 is the dust collection filter, 11 is the mounting frame, 12 is the packing, 17, 1B is the suction port. Note that the same reference numerals in the figures indicate the same parts.

Claims (1)

[Scope of utility model registration request] A body having an exhaust port and a built-in electric blower, a dust collection cover removably connected to the body and having an intake port with a check valve in the front part, and a rear opening of the dust collection cover. A wave-shaped filter is fixed to a mounting frame that is removably fitted, and the filter is arranged opposite to the intake port with an interval smaller than the vertical dimension of the filter, so that the direction of the intake air from the intake port is adjusted. In the case where the check valve substantially bends downward and the part where the air contacts the filter is eccentric downward, the mounting frame has a symmetrical outer circumferential shape and fits into the dust collection cover opening. The above-mentioned filter can be fitted so as to be vertically changeable, and the filter has a rectangular shape in which the ridge line of the waveform extends in the vertical direction, and the vertical dimension is longer than the horizontal dimension. A small vacuum cleaner.