JP2002125896A - Discharging rubbish structure of vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems such as lowering of suction power and inconve nience to handle a heavy vacuum cleaner caused by filling with rubbish in a vacuum cleaner bag for domestic use and inconvenience to put a vacuum cleaner container in and out and easily to spill the rubbish when discharging rubbish. SOLUTION: The rubbish is collected in the bottom of a vacuum cleaner container consisted of an outside pipe and inside pipe. A discharging rubbish hole and a movable lit are formed in the bottom of rubbish collecting space. With using an electric motor, the movable lit opens and closes and the rubbish is directly discharged outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust discharging mechanism of a vacuum cleaner for sucking dry dust such as dust and cotton dust.

[0002]

2. Description of the Related Art Vacuum cleaners for removing dust generated in ordinary households can be broadly classified into two types according to the structure of a dust accumulation space in the cleaner. One method is to install a removable paper dust bag in the garbage collection space, watch the dust bag fill up with dust, open the cover of the main unit, and discharge the dust together with the dust bag to the outside. This is a dust bag method in which a new dust bag is attached again. The dust collecting bag method has an advantage that a clean feeling can be obtained because the dust is thrown away to the outside together with the dust collecting bag.
However, it is difficult to judge how much dust is full, for example, because the inside of the dust collection bag cannot be visually checked. Some inconvenience may be felt with ease of use.

Another method is to attach a detachable dust collection container in a dust accumulation space, and collect dust sucked from the outside into the dust collection container using centrifugal force, gravity, or the like.
When the dust container is filled with dust, the dust container is separated from the main body, and the empty dust container is discharged to the outside and the empty dust container is attached to the main body again.
The dust collection container system has a component structure that separates the function of collecting dust and the function of collecting and storing dust, such as using centrifugal force. The structure is possible, and the dust in the dust collection container can be visually checked.Thus, the dust can be discarded to the outside in a timely manner.There is no need to carry out the cleaning work while hanging heavy debris. There is an advantage that can be done. However, when discharging the garbage collected in the dust collection container to the outside,
There are drawbacks in the workability and the cleanliness of the work such as the difficulty of attaching and detaching the dust container and the spillage of dust from the dust container.

[0004]

[0007] To solve the inconvenience of usability, such as reducing the suction force due to the dust collection bag type full of garbage, discharging the garbage to the outside by feeling that the vacuum cleaner becomes heavy, It also solves problems such as the inconvenience of attaching and detaching the dust collection container when discharging dust as seen in the dust container method, and the spillage of dust easily, and finds a system that maintains ease of use during cleaning work and maintains a clean feeling when discharging dust. That is the challenge.

[0005]

The technical problem to be solved is to make use of the advantages of the dust bag system and the dust container system and to eliminate the disadvantages. There is provided a means for directly discharging the dust collected in the outside without using a dust collecting bag and a dust collecting container. First, a dust collection space consisting of an inner cylinder and an outer cylinder is provided upstream of the electric blower, and the bottom of the outer cylinder is used as a garbage collection space.Dust collected by centrifugal force and gravity is collected in the garbage collection space at the bottom of the outer cylinder. Further, the suction force is not reduced due to clogging of dust during cleaning. In order to eliminate the need for disassembly and disassembly of the garbage, a garbage discharge port is provided in the outer cylinder at the bottom of the garbage collection space. A discharge mechanism was provided.

[0006]

FIG. 1 is a sectional view of a cleaner main body 24 showing one embodiment of the present invention. The main body 24 includes an outer cylinder 2 having a built-in electric blower 1 capable of rotating in the forward and reverse directions, an inner cylinder 3 on the upstream side of the blower impeller 1a, a dust removal hole 2b opened at the bottom of the outer cylinder 2, a movable lid 4, and a movable cover. A motor shaft 1b for reciprocating the lid 4 up and down, an electromagnetic coupling 5, a shaft with a screw 6, a guide holder 7a, a guide pin 7b, a position sensor 8 for giving a signal for driving the movable lid 4, a control circuit 9, and a dust source. A suction pipe 10 for sucking dust, a dust-wiring wire 11 for urging dust accumulated in the primary dust accumulation space 2a at the bottom of the outer cylinder 2 to the outside, and a filter 12 for preventing dust from being sucked into the electric blower.
It consists of. Here, the electric motor 1 used for the electric blower is
An electric motor, such as an inverter type, capable of two-step mode operation of several tens of revolutions / minute during cleaning and several tens of revolutions / minute rotating forward and backward when discharging dust is used. Although not shown, it is assumed that a dust suction port and a hose are attached upstream of the suction pipe 10.

The suction pipe 10 is attached at a position facing the inner cylinder 3 as shown in FIG. 1 and in a tangential direction of the outer cylinder 2 as shown in FIG. Further, the outer cylinder 2 near the primary dust accumulation space 2a has a tapered shape in which the sectional area is gradually reduced. That is, the flow path structure on the upstream side of the blower impeller 1a has a general cyclone structure. The material of the outer cylinder 2 is desirably a transparent material that can visually determine the amount of dust accumulated in the primary dust accumulation space 2a. Less than,
The operation will be described separately during the cleaning operation and when discharging dust after the cleaning operation.

At the time of cleaning work, the electromagnetic coupling 5 is controlled by a command from the control circuit 9 by the position sensor 8 or an external signal.
Is opened, and the electric blower shaft 1b and the threaded shaft 6 are in a separated state. The movable lid 4 is located at the top dead center of the threaded shaft 6 and closes the dust removal hole 2b, and the plurality of dust removing wires 11 connecting the guide holder 7a and the movable lid 4 are in a relaxed state.

When the electric blower 1 is rotated forward in the above state, the upstream side of the blower impeller 1a becomes negative pressure, and air containing dust enters the vacuum cleaner from the suction pipe. The dust that has flowed into the vacuum cleaner falls so as to be in contact with the outer cylinder 2 due to centrifugal force generated by the flow along the outer cylinder 2 and gravity, and accumulates in the primary dust accumulation space 2a (moves in the direction of the thick arrow). On the other hand, the air that has flowed into the vacuum cleaner, after the fine dust is removed by the filter 12, passes through the inner cylinder 3, the electric blower 1, and further the electric blower housing hole 1c,
It is opened to the atmosphere through the outer cylinder exhaust hole 2c (moves in the direction of the thin arrow).

Next, the operation of discharging dust after the cleaning operation is shown in FIG.
This will be described. FIG. 3 shows the cleaner body 24 after the cleaning operation.
, The movable lid 4 is automatically opened and moved to the bottom dead center of the threaded shaft 6, the dust removal hole 2b is opened, and the dust is discharged. Show. It is assumed that a relatively large garbage bag 14 such as a grocery shopping bag is installed in the vacuum cleaner stand 13 in advance as a secondary garbage collection space. When the electromagnetic coupling 5 is closed by a command from the control circuit 9 based on a signal generated by the position sensor 8 by the weight of the cleaner main body 24, the electric blower shaft 1b and the threaded shaft 6 are connected. At the same time, the control circuit 9 switches the operation mode to the low-speed operation mode of about several tens of revolutions / minute, and when the motor shaft 1b first rotates in the reverse direction, a torque is applied to the movable lid 4 via the male and female threads of the threaded shaft 6. Is transmitted.

However, the rotational motion is converted into a translational motion by the guide pin 7b fixed to the movable lid 4 and the guide holder 7a having a hole formed in the axial direction.
Moves to the bottom dead center of the threaded shaft 6, and the dust removal hole 2b is opened. At the same time, the dust removing wire 11 is pulled by the movement of the movable lid 4 and tends to be in a taut state. When the movable lid is translated up and down a plurality of times in accordance with a command from the control circuit 9, expansion and contraction movement of the dust removing wire 11 is also added, and dust accumulated in the primary accumulation space 2a in the main body is removed from the external secondary accumulation space. Garbage bag 1
Move to 4.

FIG. 4 shows another embodiment of the present invention. What is different from the above-described embodiment is that an electromagnetic pulley 15 is attached to a shaft end 1d which extends the motor shaft 1b through the housing end 1d and extends to the outside in order to translate the movable lid 4 up and down. And a mechanism for connecting to a cam 17, a link pin 18, and a translation shaft 19 integrated with the movable lid 4 via pulleys 16a and 16b.

After the cleaning operation, a signal from the outside or the fact that the cleaner main body 24 is placed on the cleaner stand 13 is detected, and at the same time the electric blower shaft 1b and the electromagnetic pulley 15 are connected by a command from the control circuit 9, The control circuit 9 switches the operation mode to the low-speed operation mode of about several tens of revolutions / minute, and when the motor shaft 1b rotates forward and reverse by a signal, the cam 17 and the link pin integrally mounted on the pulley 16b via the pulleys 16a and 16b. The shaft 19 by 18
Because of the translational movement, the opening and closing of the movable lid 4 and the dust discharging operation can be performed in substantially the same manner as in the above-described embodiment.

FIG. 5 shows another embodiment of the present invention. The difference from the above-described embodiment is that dust is discharged by manually moving the movable lid 4 up and down. The shaft 19 and the handle 20 integrated with the movable lid 4 are connected to a spring 22 in a spring holder 21 via a stopper 23. When the handle 20 is pressed, the movable lid 4 is opened, and when the handle is released, the lid is closed by the reaction force of the spring 22. The shaft 19 and the bottom of the outer cylinder 2 are attached to the main body 24 at an angle so that the handle can be operated from the outside.

FIG. 6 shows another embodiment of the present invention. The difference from the above-described embodiment is that the annular passage 26, the annular passage 26 and the suction pipe 10 are connected to the outer cylinder 2 near the dust take-out hole.
That is, a piping system connected by 7a and 27b is provided. The above-mentioned embodiment does not mention the processing when fine dust remains between the outer cylinder 2 and the movable lid 4. The fine dust residue at the above-mentioned position is basically
Is opened and closed a plurality of times, the mode is switched to the cleaning operation mode, the primary dust accumulation space 2a is set to a negative pressure, and then the operation of opening and closing the movable lid 4 is repeated to remove it. But,
Since the operation becomes complicated, if a piping system as shown in FIG. 6 is provided, the negative pressure is maintained at the tip of the movable lid during cleaning without switching the movable lid 4 after switching to the cleaning operation mode. , The dust residue is removed.

[0016]

As described above, according to the present invention, a dust removal hole is provided at the bottom of the outer cylinder, and dust accumulated in the vacuum cleaner can be automatically discharged to the outside by using the power of a motor. By employing the mechanism, dust in the cleaner is removed after each cleaning operation. As a result, it is possible to solve problems such as a reduction in suction force due to the filling of dust in the vacuum cleaner and an increase in the weight of the vacuum cleaner, which are found in the dust bag method. When the vacuum cleaner is placed on the vacuum cleaner stand after cleaning work is completed, a mechanism that detects its own weight and automatically discharges garbage accumulated in the accumulation space inside the vacuum cleaner into a garbage bag built into the vacuum cleaner stand is adopted. In addition, it is possible to solve problems such as inconvenience of attaching and detaching the dust collecting container at the time of discharging dust, which is seen in the dust collecting method, and spillage of the dust.

Further, if a relatively large bag such as a supermarket shopping bag is used as a garbage bag built in the vacuum cleaner stand, the garbage bag is more dusty than the conventional dust bag system or the dust container system. Discard frequency can be reduced. Instead of using the vacuum cleaner stand, it is also possible to direct the dust removal hole of the vacuum cleaner to the trash container and then give a trash discharge signal to automatically discharge the trash, or to manually discharge the trash by operating the handle. In addition, the danger of directly touching the dust, which is present in the conventional method, can be completely eliminated, and a clean feeling can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view of a vacuum cleaner showing an embodiment of the present invention.

FIG. 2 is a front view of the vacuum cleaner of FIG. 1 as viewed from above.

FIG. 3 is a cross-sectional view showing a movable lid opening of the present invention.

FIG. 4 is a cross-sectional view of a vacuum cleaner showing another embodiment of the present invention.

FIG. 5 is a cross-sectional view of a vacuum cleaner showing another embodiment of the present invention.

FIG. 6 is a cross-sectional view of a vacuum cleaner showing another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electric blower, 1a ... Blower impeller, 1b ... Electric motor shaft, 1c ... Housing hole, 1d ... Housing end, 2
... outer cylinder, 2a ... primary dust accumulation space, 2b ... dust removal hole, 2c ... outer cylinder exhaust hole, 3 ... inner cylinder, 4 ... movable lid, 5
... electromagnetic coupling, 6 ... threaded shaft, 7a ... guide holder, 7b ... guide pin, 8 ... position sensor,
9 control circuit, 10 suction pipe, 11 dust removal wire, 12 filter, 13 vacuum cleaner stand, 14
Garbage bag (secondary garbage collection space), 15: electromagnetic pulley, 1
6 Pulley, 17 Cam, 18 Link pin, 19 Shaft, 20 Handle, 21 Spring holder, 2
2 ... spring, 23 ... stopper, 24 ... cleaner body, 25 ... belt, 26 ... annular passage, 27a, 27b ...
Piping.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Koji Iwase, Inventor 502, Kandachicho, Tsuchiura-shi, Ibaraki Pref. Machinery Research Laboratory, Hitachi, Ltd. (72) Yoji Nakagawa 1-280, Higashi-Koigabo, Kokubunji-shi, Tokyo Hitachi, Ltd. Inside the Design Laboratory (72) Inventor Toru Ozawa 2-15-12, Nishi-Shimbashi, Minato-ku, Tokyo Inside Electric Appliances Division, Hitachi, Ltd. (72) Inventor Hisanori Toshima 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Prefecture F-term in Hitachi Taga Electronics Co., Ltd. (reference) 3B062 AC01 AG04 AH02

Claims (1)

[Claims] A vacuum cleaner having a suction port, a hose, a dust accumulation space, and an electric blower, having a function of collecting external dust and temporarily storing the dust in the dust accumulation space by a suction force of the electric blower. An inner cylinder and an outer cylinder are provided upstream, and the bottom of the outer cylinder is used as a garbage collection space.Dust collected by centrifugal force and gravity is collected in the garbage collection space, and an opening provided at the bottom of the outer cylinder of the garbage collection space. A dust removing mechanism for a vacuum cleaner, comprising: a lid plate for closing the opening; and a dust discharging mechanism for opening and closing the lid plate by reciprocating the lid plate and discharging the collected dust to the outside.