JPH0584192A - Dust collection meter of vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent suction forces from falling down by providing an indicator sliding through a transparent pipe interconnected between a suction port in communication with the outside air and a vacuum cleaner, wherein a diaphragm for dividing air-tightly the interior of said pipe is attached to the end of a protruding body for supporting the indicator. CONSTITUTION:A suction port 7 in communication with the outside air is formed on one end of a transparent pipe 6, while a connecting part 10 is fixed to an opening 8 on the other end thereof. The connecting part 10 communicates with the suction side of a motor driven blower of the body of vacuum cleaner through a communication hole 11. A cylindrical indicator 13 with bottom is inserted slidably into the pipe 6 and the indicator 13 is supported by one end of a protruded body 14, while a diaphragm 15 is attached onto the other end of the body 14 by means of a fixing piece 17. The diaphragm 15 is made from expandable elastic material such as rubber, polyethylene etc., and held by an engaging piece 16 at a step 9 of the pipe 6 to divide air-tightly the interior of the pipe 6. During normal use, the indicator 13 is positioned as illustrated and moves to the right when dust has been accumulated in a dust collection chamber. As a result, suction force of the vacuum cleaner is prevented from falling down.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collector that indicates the amount of dust collected by a cleaner body.

[0002]

2. Description of the Related Art Conventionally, this type of dust collecting meter is disclosed in
As described in Japanese Patent Publication No. 8939 (A47L 9/19), the indicator is biased toward the intake side of the pipe by a spring, and 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 bag, the amount of air flowing from the suction port of the cleaner body to the electric blower side through the dust bag decreases, and the inside of the cleaner body becomes negative pressure, The indicator that closes the intake port of the pipe by the spring moves to the cleaner body side, and the air outside the cleaner body flows into the intake side of the electric blower through the flow path of the intake port and the indicator unit, causing overheating of the electric blower. It is designed to prevent

However, this structure has a problem in that a large amount of air outside the cleaner body flows in, and the suction force of the cleaner body decreases.

[0004]

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

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided a transparent pipe which communicates an intake port formed at one end with the outside of a cleaner body and another end communicates with an intake side of an electric blower, and the inside of the pipe. An indicator portion slidably arranged to integrally form a protrusion in the central portion and a diaphragm disposed in a close contact state in the pipe are provided, and the end portion of the protrusion of the indicator portion is It is characterized by being fixed to the diaphragm.

[0006]

According to the present invention, when the inside of the cleaner main body becomes a negative pressure, the diaphragm is sucked to the intake side of the electric blower due to the pressure difference between the outside air and the inside of the cleaner main body. It slides to the main body of the vacuum cleaner and notifies the user of the accumulation of dust. At this time, by moving the indicator,
The outside air flows in from the intake port, but the inside of the pipe is partitioned by the diaphragm, so that the outside air does not flow into the cleaner body.

[0007]

An embodiment of the present invention will be described in detail below 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 (neither is shown) for storing the electric blower in the rear inside. Reference numeral 2 denotes wheels provided on both sides of a rear portion of the cleaner body 1, and reference numeral 3 denotes casters provided at a bottom portion of the cleaner body 1.

Reference numeral 4 denotes a display portion formed on the upper portion of the cleaner body 1, and reference numeral 5 denotes a dust collecting meter arranged on the display portion 4, which will be described in detail below with reference to FIGS. 1 to 3.

Reference numeral 6 denotes a transparent pipe embedded in the display portion 4 of the cleaner body 1, which communicates with the outside of the cleaner body 1 through an intake port 7 formed at one end and an opening 8 at the other end. have. Reference numeral 9 is a stepped portion formed in the substantially central portion of the pipe 6 so that a diaphragm 15 to be described later can be locked.

Reference numeral 10 denotes a connecting portion which is attached to the opening 8 at the other end of the pipe 6, and a communication hole 11 is formed in the connecting portion 10 on the cleaner body 1 side, and an electric blower built in the cleaner body 1 is formed. It communicates with the intake side (not shown). Reference numeral 12 denotes an annular rib formed on the connecting portion 10, which is an opening 8 of the pipe 6.
It is designed to be fitted and inserted into. 13 is the pipe 6
A bottomed tubular indicator portion slidably disposed inside the indicator portion 13. A protrusion 14 extending toward the opening 8 is integrally formed with the indicator portion 13.

Reference numeral 15 is arranged in the pipe 6,
A diaphragm that divides the inside into an intake port 7 side and an opening 8 side, which is made of an elastic material such as rubber, polyethylene, or soft vinyl chloride that is easily stretched, and is inserted into the step portion 9 of the pipe 6 and the pipe 6. It is clamped in close contact with the annular locking piece 16. Reference numeral 17 is a mounting piece, which is attached to the projection 14 of the indicating portion 13 with the diaphragm 15 interposed therebetween to fix the indicating portion 13 to the diaphragm 15.

Thus, in a normal use state, the instruction section is
Reference numeral 13 closes the intake port 7 by pressing the protrusion 14 with the diaphragm 15 and urging it toward the intake port 7 side of the pipe 6, but dust is accumulated in the dust collection chamber of the cleaner body 1. When the amount of air passing through the dust collection chamber decreases and the electric blower storage chamber becomes negative pressure, the diaphragm 15 is sucked to the intake side of the electric blower due to the pressure difference between the outside air and the inside of the cleaner body 1, and this diaphragm With the movement of 15, the instruction unit 13 moves to the electric blower storage chamber side to notify the user that dust has accumulated. At this time, the outside air flows into the pipe 6 from the intake port 7 of the pipe 6 due to the movement of the indicator portion 13. However, since the inside of the pipe 6 is partitioned by the diaphragm 15, the outside air does not flow into the cleaner body 1. Therefore, the suction force of the cleaner body 1 does not decrease.

When the pressure inside the electric blower storage chamber becomes extremely negative, a safety valve (not shown) provided at a position communicating the intake side of the electric blower of the cleaner body 1 and the outside air of the cleaner body 1 with each other. It is opened to prevent outside air from flowing in and prevent damage to the electric blower.

[0015]

According to the structure of the present invention, the indicator slides toward the cleaner body along with the movement of the diaphragm, and the outside air flows into the pipe through the intake port, but the inside of the pipe is partitioned by the diaphragm. Therefore, the outside air does not flow into the main body of the vacuum cleaner, and the suction force of the main body of the vacuum cleaner can be prevented from decreasing.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a dust collector showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the dust collecting meter when an indicator is moved.

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

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

[Explanation of symbols]

 1 Vacuum cleaner body 6 Pipe 7 Air inlet 13 Indicator 14 Protrusion 15 Diaphragm

Claims (1)

[Claims] 1. A transparent pipe having an intake port formed at one end communicating with the outside of the cleaner body and the other end communicating with the intake side of an electric blower, and a transparent pipe slidably disposed in the pipe. An indicator portion integrally forming a protrusion at a central portion, and a diaphragm disposed in a close contact state in the pipe, wherein an end portion of the protrusion of the indicator portion is fixed to the diaphragm. A dust collector for an electric vacuum cleaner.