JP3162927B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner,
In particular, the present invention relates to an improvement of a dust collection meter that reports a dust collection amount.

[0002]

2. Description of the Related Art Conventionally, generally in a vacuum cleaner,
In order to notify the user of the accumulation of dust in the dust collection chamber, as shown in FIG. 10, a built-in dust collection meter 101 having both ends communicating with the suction side and the atmosphere side of the electric blower of the cleaner body is provided. When the suction force decreases due to the accumulation of dust in the dust chamber, the float 103 built in the cylindrical member 102 of the dust collection meter 101
Slides against the urging force of the spring 104 to allow outside air to flow into the cleaner body from the opening 105 to prevent overheating of the electric blower.

However, in this configuration, a connecting member 107 is provided in an opening 106 on the cleaner body side (one end) of the cylindrical member 102, and the connecting member 107 connects the cylindrical member 102 and the cleaner body side opening. Although connected, the connecting member 107 and the cylindrical member 1
There is a problem that the sealing with the 02 is insufficient, air always flows in from the gap between the connecting member 107 and the cylindrical member 102, and the suction force is reduced when the amount of dust accumulated in the dust collecting chamber is small.

[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 an electric vacuum cleaner capable of preventing air leakage from a dust collecting meter and preventing a reduction in suction force of the vacuum cleaner. Make it an issue.

[0005]

SUMMARY OF THE INVENTION The present invention is directed to a cleaner main body which forms a dust collecting chamber in front and an electric blower storage chamber for storing an electric blower in the rear, and a dust collecting meter built in the cleaner main body. The dust collection meter has a transparent end that communicates with one end opening to the atmosphere side, and another end opening that communicates with the suction side of the electric blower of the cleaner body via a connecting member made of an elastic material. A cylindrical body, and a float slidably disposed in the cylindrical body and urged toward the one end opening side of the cylindrical body by a spring, wherein the connection member is the other end of the cylindrical body. In addition to being inserted into the inner periphery of the opening, the outer peripheral portion of the connecting member is formed with a crown portion that covers the outer peripheral edge of the other end opening of the cylindrical body over the entire periphery. .

The present invention also includes a cleaner main body which forms a dust collecting chamber in the front and an electric blower storage chamber for storing the electric blower in the rear, and a dust collecting meter built in the cleaner main body, The dust collecting meter has a transparent tubular body that communicates with one end opening to the atmosphere side and communicates the other end opening to the suction side of the electric blower of the cleaner body via a connecting member made of an elastic material. A float slidably disposed in the tubular body and urged toward the one end opening side of the tubular body by a spring. And at the outer periphery of the connection member,
A crown portion is formed over the entire circumference of the cylindrical body at the other end of the opening, and a protrusion is formed over the entire circumference of the crown portion.

[0007]

According to the structure of the first aspect of the present invention, since the crown portion of the connecting member is crowned at the opening edge of the other end of the cylindrical body, the electric blower is driven so that the inside of the cleaner body is formed. When the pressure becomes negative, the crown portion of the connection member is in close contact with the opening edge of the cylindrical body, and from the connection portion between the cylindrical body and the connection member, outside air is prevented from flowing into the cylindrical body, and the inside of the dust collection chamber is prevented. A reduction in suction force in a state where the amount of dust is small is prevented.

Further, according to the configuration of claim 2 of the present invention,
At the opening edge of the other end of the tubular body, the crown portion of the connection member is crowned. Therefore, when the electric blower is driven and the inside of the cleaner body becomes negative pressure, the projection of the crown portion of the connection member is formed. Closely adheres to the opening edge of the cylindrical body, the outside air is prevented from flowing into the cylindrical body from the connection portion between the cylindrical body and the connection member, and the suction force in a state where the dust in the dust collection chamber is small is reduced. Is prevented.

[0009]

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

Reference numeral 1 denotes a vacuum cleaner main body, and upper and lower cases 1a, 1
b, and a dust collecting lid 10 to be described later, and a dust collecting chamber 3 for storing a dust collecting bag 2 in the front and an electric blower storing chamber 4 for storing an electric blower (not shown) in the rear. . Reference numeral 5 denotes an intake port formed in the front wall 6 of the dust collection chamber 3, and reference numeral 7 denotes a port formed near the intake port 5, and locks a mouth plate 8 of the dust collection bag 2 in a direction of pressing against the intake port 5. It is a clamp to do.

Reference numeral 9 denotes a communication hole formed in the front wall 6 of the dust collection chamber 3. A tube 24 of a dust collection meter 19 described later is disposed in the communication hole 9, and a cylindrical member of the dust collection meter 19 is provided. The inside of 20 and the dust collecting chamber 3 communicate with each other.

Reference numeral 10 denotes a dust collecting cover which covers the upper opening of the dust collecting chamber 3 so as to be openable and closable.
When the dust collection cover 10 is closed without the dust collection bag 2 being attached to the dust collection chamber 3, the clamp 7 is rotated to the inside of the dust collection chamber 3. As a result, the rib 11 abuts on the clamp 7 so that the dust collection cover 10 does not close.

Reference numeral 12 denotes a front cover which is attached to the front of the suction port 5 of the cleaner body 1 and forms a hose connection port 13 communicating with the suction port 5, and a bellows hose 14 is detachably attached to the hose connection port 13. To connect to. Reference numeral 15 denotes a terminal receiving portion formed on the front cover 12, to which a connection terminal formed on the bellows hose 14 is connected, to a motor built in a floor suction tool (not shown) via the bellows hose 14. Power is supplied.

Reference numeral 16 denotes a support rib formed on the back side of the front cover 12, and the front cover 12
The support rib 16 and the cleaner body 1
And a dust collecting meter 19 described later is sandwiched between the two.

Reference numeral 17 denotes an intake hole formed in the front cover 12, and a float 25 of a dust collecting meter 19, which will be described later, when the dust collecting bag 2 is filled with dust and the inside of the cleaner body 1 becomes negative pressure.
Slides, the suction hole 21 is opened, and the suction hole 21 is opened.
Outside air flows in from 17. Reference numeral 18 denotes a display window formed at an upper corner portion of the front cover 12, and when a float 25 described later slides, the float 25 is located at the display window 18 so that a user can visually recognize the accumulation of dust. be able to.

Reference numeral 19 denotes the cleaner body 1 and the front cover 12
A dust collection meter installed in the space with a transparent cylindrical member
20, a cap 22 made of an elastic material provided at one end of the tubular member 20 (on the side of the intake hole 17 of the front cover 12) and having a suction hole 21, and an opening 23 at the other end of the tubular member 20 , A tube 24 made of an elastic material connected to the communication hole 9 of the front wall 6 of the dust collecting chamber 3, a float 25 slidably disposed in the cylindrical member 20, and the float 25 And a spring 26 for urging the cap 22 toward the suction hole 21 side.

Numeral 27 denotes a thin crown portion integrally formed on the outer periphery of the tube 24 over the entire circumference. The crown portion 27 is attached to the edge of the opening 23 at the other end of the tubular member 20. When the electric blower is driven and the inside of the dust collecting chamber 3 becomes a negative pressure, the crowned portion 27 comes into close contact with the outer peripheral surface of the opening 23 of the cylindrical member 20 and the cylindrical member 20 Air is prevented from leaking from the connection between the tube and the tube 24.

The mounting portion 27 of the tube 24 is mounted on the edge of the other end opening 23 of the dust collecting meter 19 by being mounted thereon, and the other end of the tube 24 is connected to the front wall 6 of the dust collecting chamber 3. The front cover 12 is attached to the front wall 6 of the dust collection chamber 3 while being disposed in the communication hole 9. In this state, the intake port 17 of the front cover 12 corresponds to the suction hole 21 of the dust meter 19, the cylindrical member 20 of the dust meter 19 faces the display window 18 of the front cover 12, and the dust meter 19 It is sandwiched between the front wall 6 of the dust collection chamber 3 and the support rib 16 of the front cover 12.

According to the above configuration, the opening 23 of the tubular member 20
Since the crown portion 27 of the tube 24 is mounted on the edge, outside air is prevented from flowing into the tubular member 20 from the connection portion between the tubular member 20 and the tube 24, and the inside of the dust collection bag 2 is prevented. The reduction of the suction force in the state where the dust is small is prevented.

In the first embodiment, the thin crown 27 is formed integrally on the outer periphery of the tube 24. However, as in the second embodiment shown in FIG. On the circumference,
An annular projection 28 may be formed.

According to this configuration, when the electric blower is driven and the inside of the dust collecting chamber 3 becomes a negative pressure, the crown portion 27 becomes a cylindrical member.
Although it is in close contact with the outer peripheral surface of the opening 23 of 20, the projection 28 formed on the inner peripheral surface of the crown portion 27 is pressed against the outer peripheral surface of the opening 23 of the cylindrical member 20, and the cylindrical member 20 and the tube 24 are The air leakage from the connecting portion of the above is more reliably prevented, and the reduction of the suction force in a state where the amount of collected dust is small can be surely prevented.

[0022]

According to the first aspect of the present invention, the cylindrical member and the connecting member are formed on the outer peripheral portion of the connecting member by forming the crown portion on the opening edge of the other end of the cylindrical member. It is possible to prevent the outside air from flowing into the cylindrical body from the connection part of, and to prevent a reduction in the suction force when the dust in the dust collection chamber is small.

According to the second aspect of the present invention, a crown portion is formed on the outer peripheral portion of the connecting member so as to be crowned at the opening edge of the other end of the cylindrical body, and the inner peripheral surface of the crown portion is formed. By forming the protruding portion over the entire circumference, it is possible to more reliably prevent the outside air from flowing into the cylindrical body from the connection portion between the cylindrical body and the connection member, and to reduce the amount of dust in the dust collection chamber. Can be prevented from decreasing.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing an embodiment of the present invention.

FIG. 2 is a front view of a lower case of the cleaner body.

FIG. 3 is a front view of the lower case with the dust collection meter removed.

FIG. 4 is a plan view of a tube (connection member) of the dust collection meter.

FIG. 5 is a sectional view of a tube (connecting member) of the dust collection meter.

FIG. 6 is a partially cutaway side view of the electric vacuum cleaner.

FIG. 7 is a front view of the cleaner body.

FIG. 8 is a front view of the front cover.

FIG. 9 is a sectional view of a tube (connecting member) showing the second embodiment.

FIG. 10 is a sectional view of a main part showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 1a Upper case 1b Lower case 3 Dust collection room 4 Electric blower storage room 19 Dust collection meter 20 Cylindrical member (cylindrical body) 21 Suction hole (one end opening) 23 Opening (other end opening) 24 tube (Connecting member) 25 Float 26 Spring 27 Crown 28 Projection

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-14855 (JP, A) JP-A-59-148747 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47L 9/19

Claims (2)

(57) [Claims] 1. A dust collector, comprising: a cleaner main body which forms a dust collecting chamber in front and an electric blower storage chamber for storing an electric blower in the rear; and a dust collecting meter built in the cleaner main body. A transparent tubular body communicating with one end opening to the atmosphere side and communicating the other end opening to the suction side of the electric blower of the cleaner body via a connecting member made of an elastic material; and A float slidably disposed in the body and urged toward the one end opening side of the tubular body by a spring,
The connection member is inserted into the inner periphery of the opening at the other end of the cylindrical body.
Together it is, on the outer peripheral portion of the connecting member, electric vacuum cleaner, characterized in that the formation of the crown attachment part for capped at the other end opening peripheral edge of the tubular body over the entire circumference. 2. A dust-collecting meter, comprising: a cleaner main body that forms a dust-collecting chamber in front and an electric-blower storage chamber that stores an electric blower in the rear; and a dust-collecting meter built in the cleaner main body. A transparent tubular body communicating with one end opening to the atmosphere side and communicating the other end opening to the suction side of the electric blower of the cleaner body via a connecting member made of an elastic material; and A float slidably disposed in the body and urged toward the one end opening side of the tubular body by a spring,
The connection member is inserted into the inner periphery of the opening at the other end of the cylindrical body.
Together with the, wherein the outer peripheral portion of the connecting member, the entire circumference over to form a crown attachment part for capped at the other end opening peripheral edge of the tubular body, over the entire circumference in the circumferential said crown adhesive portion An electric vacuum cleaner characterized by forming a projection.