JPH0521854U - Vacuum cleaner dust collector - Google Patents

Abstract

(57) [Summary] [Structure] The indicator portion 14 slidably arranged in the pipe 6 of the dust collecting meter 5 is biased toward the intake port 7 side by the spring 13, and the connecting portion 9 made of an elastic material is used. On the side of the pipe 6, the annular locking rib that is in close contact with the inner circumference of the pipe 6 and extends toward the intake port 7 side
Vacuum cleaner dust collection meter formed 11. [Effect] When dust is accumulated in the dust collection chamber and the suction force of the cleaner body is reduced, the indicator moves to the cleaner body side against the elasticity of the spring and comes into contact with the elastic ribs. As a result, air from the intake port is prevented from flowing into the cleaner body, and a decrease in suction force of the cleaner body can be prevented.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a dust collection meter that indicates a dust collection amount of an electric vacuum cleaner.

[0002]

[Prior Art]

 Conventionally, this kind of dust collecting meter has been urged toward the intake side of the pipe by a spring as described in JP-A-64-8939 (A47L 9/19), and It is known that a flow path is formed so as to communicate from the outer peripheral surface to the inside. At night with this configuration, dust accumulates inside the dust bag, and the amount of air that passes through the dust bag from the suction port of the cleaner body and flows to the electric blower side decreases, creating a negative pressure inside the cleaner body. Then, 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 flows into the intake side of the electric blower through the intake port and the flow path of the indicator, and the electric blower. It is designed to prevent overheating.

However, according to this configuration, even when the amount of dust in the dust collection chamber is small and the amount of air passing through the dust collection chamber from the suction port is relatively large, the indicator moves slightly to the cleaner body side and the outside air is removed. There is also a problem that the suction force of the vacuum cleaner body decreases due to the large amount of outside air that flows in.

[0004]

[Problems to be solved by the device]

 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 that does not reduce the suction force of the cleaner body.

[0005]

[Means for Solving the Problems]

 The present invention is a transparent pipe that communicates with the outside of a cleaner body through an intake port formed at one end and an opening at the other end of the pipe that connects the inside of the pipe to the suction side of an electric blower. A connecting part, an indicating part slidably arranged in the pipe, and an elastic body for urging the indicating part toward the intake port side of the pipe. It is characterized in that an annular locking rib that is closely attached to the inner circumference of the pipe and extends toward the intake port is formed.

[0006]

[Action]

 According to the configuration of the present invention, the indicator moves to the cleaner body side according to the amount of dust in the dust collection chamber to notify that the dust has accumulated, and the dust collection chamber will absorb a small amount of dust. When the vacuum force in the vacuum cleaner body is relatively high and the vacuum level inside the vacuum cleaner is low, the movement of the indicator to the vacuum cleaner body is small, and the outside air flowing in from the pipe intake port passes through the gap between the indicator and the pipe. It flows into the main body of the vacuum cleaner and prevents overheating of the electric blower.

When the dust collecting chamber is filled with dust and the suction force of the cleaner body is small and the vacuum degree of the cleaner body is high, the indicator moves toward the cleaner body and hits the locking rib. Since the contact portion is brought into close contact with the indicator portion by the elasticity of the locking rib, the outside air from the intake port does not flow into the cleaner body, and the suction force of the cleaner body is prevented from being lowered.

[0008]

【Example】

 An 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 body, which includes a dust collection chamber in the front of the inside and an electric blower storage chamber (not shown) for storing the electric blower in the rear of the interior. 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 unit formed on the upper portion of the cleaner body 1, and reference numeral 5 denotes a dust collecting meter arranged on the display unit 4, which will be described 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 has an opening at the other end. Have eight.

Reference numeral 9 is a connecting portion made of an elastic material such as soft vinyl chloride that is attached to the opening 8 at the other end of the pipe 6, and a communicating hole 10 is formed on the cleaner body 1 side of the connecting portion 9 for cleaning The electric blower (not shown) built in the machine body 1 communicates with the intake side.

Reference numeral 11 is an annular locking rib formed on the pipe 6 side of the connecting portion 9, and in the state where the connecting portion 9 is attached to the opening 8 of the pipe 6, close contact with the inner wall of the pipe 6 prevents air leakage. The end of the locking rib 11 is located at the approximate center of the pipe 6. Reference numeral 12 is a fitting boss formed inside the locking rib 11, and the spring 13 is attached by fitting the spring 13 arranged in the pipe 6 into the fitting boss 12. ..

Reference numeral 14 is a bottomed tubular indicator portion slidably arranged in the pipe 6, and is urged toward the intake port 7 side of the pipe 6 by the elasticity of the spring 13 to open the intake port 7. When closed and slides toward the cleaner body 1 side against the elasticity of the spring 13, the end portion of the indicator portion 14 abuts on the locking rib 11 and the intake port 7 of the pipe 6 The inflowing air is prevented from flowing into the cleaner body 1.

When the amount of air that passes through the dust collection chamber decreases due to the accumulation of dust in the dust collection chamber of the cleaner body 1, and the electric blower storage chamber becomes negative pressure, the indicator of the dust collection meter 5 14 is pushed to the outside air and slides to the side of the electric blower storage room to inform the user of the cleaner of the amount of accumulated dust. At this time, the outside air flowing from the intake port 7 of the pipe 6 flows into the intake side of the electric blower of the cleaner body 1 through the gap between the indicator 14 and the pipe 6, but the amount of dust in the dust collecting chamber is small. Therefore, the suction force of the cleaner body 1 is relatively large, and the amount of outside air that flows in from the intake port 7 of the pipe 6 is small, so the influence of the inflowing outside air on the suction force is small.

Then, when the dust collection chamber is filled with dust and the suction force decreases, and the amount of air flowing through the dust collection chamber to the electric blower decreases, the degree of vacuum in the electric blower storage chamber increases, and The indicator 14 further moves to the cleaner body 1 side and contacts the locking rib 11. Since the locking rib 11 is integrally formed with the connecting portion 9 made of an elastic material such as soft vinyl chloride, the indicator 14 and the locking rib 11 are brought into close contact with each other, and the outside air flowing from the intake port 7 of the pipe 6 is prevented. It is possible to prevent the cleaner body 1 from flowing into the main body 1 and to prevent the suction force of the cleaner body 1 from decreasing as much as possible.

In addition, since the indicator 14 and the retaining rib 11 are brought into close contact with each other by bringing the indicator 14 into contact with the retaining rib 11 formed on the connecting portion 9 made of an elastic material, the inside of the pipe 6 is prevented. It is not necessary to provide a packing for partitioning the inside of the cleaner main body 1 and the number of parts can be suppressed.

When the electric blower housing chamber becomes extremely negative in pressure, 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.

Further, although the connecting portion 9 is made of an elastic material in the above embodiment, the indicating portion 14 may be made of an elastic material.

[0019]

[Effect of the device]

 According to the configuration of the present invention, when dust is accumulated in the dust collecting chamber and the suction force of the cleaner body is reduced, the indicator moves toward the cleaner body against the elasticity of the spring and contacts the locking rib. Since the locking rib made of elastic material makes the indicator and the locking rib closely contact each other, the outside air from the intake port is prevented from flowing into the cleaner body and the suction force of the cleaner body is prevented from decreasing. can do.

[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 sectional view of the dust collecting meter when the spring is contracted.

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

FIG. 4 is a partially cutaway view of a cleaner body to which the dust collecting meter is attached.

[Explanation of symbols]

 1 Vacuum cleaner body 6 Pipe 7 Intake port 8 Opening 9 Connection part 11 Locking rib 13 Spring (elastic body) 14 Indicator part

Claims (1)

[Scope of utility model registration request] 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 the opening at the other end of the pipe to communicate the inside of the pipe with the intake side of the electric blower. The connecting part, an indicating part slidably arranged in the pipe, and an elastic body for urging the indicating part toward the intake port side of the pipe, and the pipe side of the connecting part includes the pipe. A dust collecting meter for an electric vacuum cleaner, which is characterized in that an annular locking rib that is closely attached to the inner circumference and extends toward the intake port is formed.