JP3011495B2 - Vacuum cleaner dust meter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting meter for indicating the amount of dust collected by a vacuum cleaner body.

[0002]

2. Description of the Related Art Conventionally, this kind of dust collecting meter has been disclosed in
As described in -8939 (A47L 9/19), while the indicator is urged toward the inlet side of the pipe by a spring, the indicator has a flow path communicating from the outer peripheral surface to the inside. Are known. According to this configuration, when dust accumulates in the dust collection bag, the amount of air flowing through the dust collection bag from the suction port of the cleaner body to the electric blower side decreases, and the inside of the cleaner body becomes negative pressure, The indicator for closing the intake port of the pipe by the spring moves to the cleaner body side, air outside the cleaner body flows into the intake side of the electric blower through the intake port and the flow path of the indicator section, and the electric blower is overheated. Is to be prevented.

[0003] However, this configuration has a problem that a large amount of air outside the cleaner body flows into the cleaner body and the suction force of the cleaner body is reduced.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and has as its object to provide a dust collecting meter which does not reduce the suction force of the cleaner body.

[0005]

According to the present invention, there is provided a transparent pipe communicating with the outside of the cleaner body through an air inlet formed at one end, and a transparent pipe attached to an opening at the other end of the pipe. A connecting portion communicating with the suction side of the electric blower, an indicating portion slidably excreted into the pipe, and one end attached to the indicating portion, and the other end airtight to the other end opening side of the pipe. And a space that is fixed by the expandable and contractible diaphragm and that is communicated with the suction side of the electric blower, which is surrounded by the connection part, the indication part, and the diaphragm, and is not connected to the suction port of the pipe.

[0006]

According to the present invention, when the inside of the vacuum cleaner becomes a negative pressure, the indicating portion is pressed by the outside air and slides toward the suction side of the electric blower to notify the user that dust has accumulated in the dust collecting chamber. I do. At this time, with the contraction of the diaphragm, air in the diaphragm flows into the intake side of the electric blower through the connection portion, but since the end of the diaphragm is air-tightly fixed to the opening side of the pipe, the air from the pipe intake port The outside air flowing into the pipe does not flow into the cleaner body.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings.

In FIG. 4, reference numeral 1 denotes a cleaner main body, which is provided with a dust collecting chamber in the front inside and an electric blower storage chamber (both not shown) for storing an electric blower in the rear inside. Reference numeral 2 denotes wheels arranged on both sides of the rear part of the cleaner main body 1, and reference numeral 3 denotes casters arranged on the bottom of the cleaner main body 1. Reference numeral 4 denotes a bumper made of an elastic material disposed on the outer periphery of the cleaner main body 1 so as to absorb an impact when the cleaner main body 1 comes into contact with furniture or the like and prevent the furniture or the like from being damaged. Has become.

Reference numeral 5 denotes a display unit formed on the upper portion of the cleaner body 1, and reference numeral 6 denotes a dust collection meter disposed on the display unit 5, which will be described in detail below with reference to FIGS.

Reference numeral 7 denotes a transparent pipe buried in the display section 5 of the cleaner main body 1, which communicates with the outside of the cleaner main body 1 through an air inlet 8 formed at one end, and an opening 9 at the other end. have. Reference numeral 10 denotes a connection portion which is attached to the opening 9 at the other end of the pipe 7. A communication hole 11 is formed in the connection portion 10 on the cleaner body 1 side, and an electric blower (shown in FIG. )). Reference numeral 12 denotes an annular rib formed in the connection portion 10 and fitted and inserted into the opening 9 of the pipe 7. A fitting portion 13 to which the other end of the diaphragm 15 described later is fitted is provided at an end of the rib 12. Is formed.

Reference numeral 14 denotes a bottomed cylindrical indication portion slidably disposed in the pipe 7, which is urged toward the intake port 8 side of the pipe 7 by a diaphragm 15 described later to close the intake port 8. Is to be implemented. Reference numeral 15 denotes an elastic diaphragm which is disposed in the pipe 7 so as to be able to expand and contract, and has one end fixed to the indicating part 14 and the indicating part 14 is connected to the inlet 8 of the pipe 7.
And the other end is hermetically fixed to the opening 9 side of the pipe 7 to prevent the air from the suction port 8 from flowing into the cleaner body 1.

When dust accumulates in the dust collecting chamber of the cleaner body 1 and the amount of air passing through the dust collecting chamber decreases, and the pressure in the electric blower storage chamber becomes negative, the indicating section of the dust collecting meter 6 is activated. 14
Is pressed by the outside air and slides toward the electric blower storage chamber side to notify the user of the vacuum cleaner that dust has accumulated. At this time,
As the diaphragm 15 shrinks, the air in the diaphragm 15 flows into the electric blower storage chamber from the communication hole 11 of the connection portion 14. At the same time as the indicator 14 slides, outside air flows into the pipe 7 from the intake port 8 of the pipe 7. However, since the end of the diaphragm 15 is airtightly fixed to the opening 9 of the pipe 7, Does not flow into the cleaner body 1.

According to this configuration, the user is notified of the accumulation of dust in the dust collecting chamber by sliding the indicator 14, but the air flowing from the suction port 8 of the pipe 7 is used as the main body of the cleaner. 1, the suction force of the cleaner body 1 does not decrease. If the pressure inside the electric blower storage chamber becomes extremely negative, a safety valve (not shown) provided at a position where the suction side of the electric blower of the cleaner main body 1 communicates with the outside air of the cleaner main body 1 is opened. The outside air flows in to prevent the electric blower from being damaged.

[0014]

According to the structure of the present invention, since the end of the diaphragm is airtightly fixed to the opening side of the pipe, the outside air does not flow into the cleaner body, and the suction force of the cleaner body is reduced. Does not drop.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a dust meter according to an embodiment of the present invention.

FIG. 2 is a sectional view of the dust collecting meter when the diaphragm is contracted.

FIG. 3 is an exploded perspective view of the dust collection meter.

FIG. 4 is a partially broken view of the cleaner body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 7 Pipe 8 Inlet 9 Opening 10 Connection part 14 Indicator part 15 Diaphragm

Continuation of the front page (56) References JP-A-56-139730 (JP, A) JP-A-4-152925 (JP, A) JP-A-58-43359 (JP, U) JP-B 64-3497 (JP) , B2) (58) Field surveyed (Int. Cl. ⁷ , DB name) A47L 9/19

Claims (1)

(57) [Claims] 1. A transparent pipe communicating with the outside of the cleaner body through an intake port formed at one end, and a transparent pipe attached to an opening at the other end of the pipe to communicate the inside of the pipe with the intake side of the electric blower. A connecting portion, an indicating portion slidably excreted into the pipe, one end attached to the indicating portion, and the other end
Telescopically fixed to the other end opening side of the pipe in an airtight manner
A diaphragm, wherein the connection unit, the instruction unit, and the diaphragm
Space surrounded by the flam and communicating with the intake side of the electric blower
A dust collection meter for a vacuum cleaner , wherein the suction port and the suction port of the pipe are not communicated .