JPH03268725A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent a filter from covering a suction hole, to maintain the suction performance and to attain the securing of the dust collection quantity by forming a ventilation passage in a filter guard molded by vertical and horizontal grid ribs installed in front of the suction hole. CONSTITUTION:From a hose port, dust infiltrates into a dust collecting chamber 2 and is accumulated gradually, and since a suction hole 12 provided in front of a motor-driven air blower is smaller than a surface part of a paper bag, the paper bag 7 comes to cover the suction hole 12. However, since a filter guard 8 is molded like a grid, and also, 13 and 15 being ventilation holes B, C are molded integrally on the upper face and the side face, even if the front (grid part) of the filter guard 8 is covered with the paper bag 7, a wind flowing through a bypass from the ventilation hole B13 and the ventilation hole 15C passes through to the motor-driven air blower 3. Also, 17 is a ventilation groove of a recessed part shape provided on the vertical grid rib and secures the left and the right ventilation passages in the filter guard 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vacuum cleaner in which a filter guard is attached to an intake hole provided on the front surface of an electric blower, and particularly relates to a structure for preventing the filter from adhering to the filter guard.

[Conventional technology]

The conventional device (Japanese Patent Publication No. 64-9850) has a case on the front of the electric blower to hold the secondary filter, but it does not have a structure to prevent the filters from sticking together, so it is difficult to collect the filters. The dust volume was configured to be smaller than the size of the dust collection chamber, resulting in inferior performance and specifications.

[Problem to be solved by the invention]

When the filter is set in the dust collection chamber and the vacuum cleaner is operated, the filter expands and covers the filter guard attached to the air intake hole on the front of the electric blower.

When the filter guard is sealed by the filter, only the small part of the filter that is in contact with the filter guard is working on its filtration function, which causes the filter to clog quickly and collect less dust, resulting in performance problems. So, in order to solve this, 1. By making the size of the filter smaller than the size of the dust collection chamber, we created a structure where the filter does not come into close contact with the filter guard. 2゜The filter guard is large and has a structure that does not seal once the filter comes into contact with it.

However, in 1 and 2 above, the volume of the dust collection chamber cannot be used effectively, and 2 above causes an increase in cost.

[Means to solve the problem]

In order to achieve the above objective, a ventilation flow path is formed in the filter girth formed by vertical and horizontal lattice ribs attached to the front of the intake hole, and even when the filter is in close contact with it, it does not become airtight and performance is maintained. In order to achieve this, a four-part ventilation groove is provided on the electric blower side of the vertical lattice rib of the filter guard to ensure left and right ventilation channels, and a convex shape is provided on the top surface of the filter guard on the side wall of the vacuum cleaner. It has a structure in which a ventilation passage is integrally provided and a ventilation hole is installed on the side surface of the convex portion.

[Effect]

The filter guard attached to the intake hole on the front of the electric blower is placed at the rear of the filter, which inflates with the wind generated by the electric blower.

The filter guard has a grid-like shape that allows air to pass through from the front. The volume of the filter is large enough to effectively utilize the size of the dust collection chamber. If the filter guard is small, the filter will cover the entire surface, and the dust filtration part of the filter will be concentrated in one part.

The filter will clog quickly and the amount of dust collected will be small.

For this reason, in order to secure left and right ventilation flow paths inside the filter guard, four-part ventilation grooves are formed in the vertical lattice ribs, and at the top of the vacuum cleaner body, which is the side where the filter is installed, and at the corner of the filter on the side wall side. A periscope-like convex air passage and a vent hole are provided on the side surfaces of the upper end of the filter gar 1-, which is difficult to get into a sealed state, and the close contact of the filter makes it possible to prevent the airtight state.

〔Example〕

Hereinafter, one embodiment of the present invention will be explained with reference to FIGS. 1 and 2. Reference numeral 61 indicates a vacuum cleaner body, 2 indicates a dust collection chamber, 3 indicates an electric blower,
4 is a dust collection chamber lid, 5 is a hose fitting for connecting a hose, 6 is a jarin, 7 is a paper bag, 8 is a filter guard, 9 is a ventilation hole A integrally formed in the filter guard 8, 10 is a fixed position of the paper bag 7 11 indicates an indicator case that is a guide for clogging with dust. Next, the operation will be explained.Dust enters the dust collection chamber 2 from the six-horse chute 5 and gradually accumulates therein. Since the air intake hole 12 provided on the front side of the electric blower is smaller than the surface of the paper bag 7, the air intake hole 12
The paper bag 7 will now cover the area. However, the filter guard 9 is formed in a grid shape and has ventilation holes B on the top and side surfaces.
, C 13° 15 are integrally molded, so even if the front surface (lattice part) of the filter guard 8 is covered with the paper bag 7, the air flowing from the ventilation hole B131 and the ventilation hole 15C (not shown) can be bypassed. will pass through to the electric blower 3. Also, a pre-filter 16 is provided between the ventilation hole 12 and the electric blower 3 to prevent dust from entering the electric blower 3. In order to clean the target, the two sides of the filter guard 8 are integrally molded with a handle 14 for servicing, so that if you hook your finger on it and pull it toward the front, it will come off.17 are concave-shaped ventilation grooves provided in the vertical lattice ribs to ensure left and right ventilation flow paths in the filter guard 8. [Effects of the Invention] According to the present invention, the filter has a concave-shaped ventilation groove provided in the vertical lattice rib. By using the compact filter gar 1 to prevent dust from covering the air, maintain suction performance, and secure the amount of dust collected, it is possible to provide an inexpensive vacuum cleaner with a large dust collection chamber. Ta.

[Brief explanation of drawings]

FIG. 1 is an overall sectional view of a vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a top view of a filter girt assembled, and FIG. 3 is a detailed view of the filter girt. FIG. 4 shows a perspective view of the device attached to the main body.

Claims (1)

[Claims] 1. In a vacuum cleaner that has a motor room containing a built-in electric blower and a dust collection room that collects dust, and is provided with an intake hole that communicates the motor room and the dust collection room, a vertical lattice rib and a A removable filter guard formed of horizontal lattice ribs is provided, and concave ventilation grooves are provided in the vertical lattice ribs of the filter guard, and convex ventilation grooves are provided at the end of the top surface of the filter guard on the side wall of the vacuum cleaner. A vacuum cleaner characterized in that a channel is integrally formed and a ventilation hole is provided on the side surface of the convex part.