JPH0123391Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a vacuum cleaner that collects dust by attaching a dust collection bag to a dust collection case.

(Prior art) Conventional vacuum cleaners of this type, for example,
As described in Publication No. 55-79961, an intake port that communicates with the suction side of the electric blower is formed at the rear of the dust collection case formed on the suction side of the main body case, and an air intake port is formed at the front of the dust collection case. A structure was adopted in which an inlet was opened and communicated with the inlet in a straight line along the horizontal direction.

(Problem to be solved by the invention) In the conventional vacuum cleaner mentioned above, even if the bottom is clogged with dust captured in the dust collection bag during cleaning, the air filtered from the circumference of the dust collection bag passes through the intake port. It is necessary to secure a ventilation path that communicates with the intake port between the outer circumferential surface of the dust collection bag and the inner surface of the dust collection case so that the air can be sucked into the electric blower. It is necessary to form ribs or the like to prevent the surfaces from coming into close contact. For this reason, reinforcing ribs and the like formed on the inner surface of the dust collecting case must be provided so as to form ventilation passages, which poses a problem in that the structure and shape of the ribs and the like are restricted.

Also, as in the vacuum cleaner described in JP-A No. 58-118726, a structure in which the suction port formed on the front surface of the dust collection case is opened diagonally upward is known. A vacuum cleaner has a structure in which an air passage connected to the suction side of the electric blower is formed in the upper part of the dust collection case via a filter, so the peripheral surface of the dust collection bag attached to the suction port is attracted to the filter surface. Since the dust collection bag is placed in close contact with the filter, the filtration surface of the dust collection bag is limited to the surface facing the filter, reducing the filtration surface.
Cleaning efficiency is reduced, the dust collection bag has to be replaced frequently, and this vacuum cleaner also needs to be provided with a rib or the like to form a ventilation path between the dust collection bag and the filter.

The present invention was developed in view of the above problems, and the dust collection bag is arranged diagonally from the front upper part to the rear lower part in the dust collection chamber of the dust collection case, and the outer peripheral surface of the dust collection bag is This invention provides a vacuum cleaner in which a ventilation path is inevitably formed between the dust collection bag and the inner surface of the dust collection chamber, and the filtration efficiency of the dust collection bag is improved.

[Structure of the idea]

(Problems to be Solved by the Invention) The vacuum cleaner of the present invention includes a main body case with a built-in electric blower, a suction port provided on the suction side of the main case, and a suction port formed on the front side, and the electric blower installed in the rear part. a dust collection case having a dust collection chamber formed with an intake port communicating with the suction side, the dust collection chamber of the dust collection case having a substantially rectangular cross-sectional shape from the suction port toward the intake port; The suction port is formed at the rear lower part of the dust collection chamber, and the suction port opens in the diagonal direction from the intake port toward the front upper part of the dust collection chamber. The attached dust collection bag has a substantially rectangular cross-sectional shape when viewed from the suction port toward the intake port, and the dust collection port is connected to the inside of the suction port and extends diagonally from the suction port toward the rear intake port. It is characterized by being placed along the line.

(Function) In the vacuum cleaner of the present invention, the dust collection bag attached to the suction port of the dust collection chamber of the dust collection case is arranged diagonally from the rear lower part of the dust collection chamber to the front upper part. Since a ventilation path is inevitably formed between the outer circumferential surface of the dust collection bag and the inner surface of the dust collection chamber, the dust collection bag does not come into close contact with the inner surface of the dust collection case, and the dust collection bag Ribs ensure ventilation between the top and bottom, allow effective use of the outer circumferential surface of the dust collecting bag, and prevent the outer circumferential surface of the dust collecting bag from coming into close contact with the inner surface of the dust collecting chamber. By forming the ribs, there is no need to maintain a ventilation gap, and the ribs only need to reinforce the dust collection case, thereby increasing the filtration efficiency of the dust collection bag and improving the cleaning efficiency. In addition, even if the dust collection bag is folded and attached to the suction port, when it expands due to the suction force of the electric blower, it will spread smoothly without coming into contact with the inner surface of the dust collection case and receiving resistance. It is.

(Example) Next, the configuration of an example of the present invention will be described with reference to the drawings.

The vacuum cleaner is composed of a main body case 2 containing an electric blower 1 and a dust collection case 3 provided on the suction side of this main case 2, and a dust collection bag 4 is detachably attached to the dust collection case 3. It is designed to be worn freely.

The main body case 2 has a substantially rectangular parallelepiped shape, and has an exhaust port 11 on the rear side that communicates with the exhaust side of the electric blower 1.
and the electric blower 1 at the lower front side.
An air intake port 12 is formed which communicates with the air intake side. Also, rear wheels 13 are located on both sides of the bottom of this main body case 2.
is provided, and a rotatable clamp 14 is provided on the upper front side.
is provided.

Further, the dust collection case 3 has a substantially rectangular parallelepiped shape, is integrally provided on the front side of the main body case 2, and has an opening formed from the upper surface to the front surface of the dust collection chamber 3a formed inside the dust collection case 3. is a lid body 2 that can be opened and closed freely
1 is provided, and a front wheel 22 that is rotatable in the horizontal direction is provided on the lower surface. And this lid body 2
1 has an air intake port 12 opened at the lower front side of the main body case 2 located at the rear of the dust collection chamber 3a.
A suction port 23 opening diagonally toward the front upper part of the dust collection case 3 is formed at the front upper part of the dust collecting case 3. The dust collection chamber 3a has a substantially rectangular cross section extending from the front suction port 23 to the rear suction port 12. The suction pipe 2 is removably inserted into the suction port 23 from the outside.
4, this suction port 23 is opened upward on the front side, so that it projects obliquely upward. Further, the lid body 21 is provided with an engagement protrusion 25 that engages the rear end of the dust collection case 3 with the clamp 14 in a detachable manner.

Further, an engaging portion 28 is formed on the lower edge of the lid 21, which is the lower front portion of the dust collecting case 3, to detachably engage with the front lower portion of the dust collecting case 3. It is designed to be opened and closed by rotating around the joining part 28 as a fulcrum. And this lid body 21
A seal packing 30 is attached to the edge of the opening 29 of the dust collection chamber 3a, which is opened and closed by the
A seal packing 3 is also provided around the inside of the suction port 23.
1 is provided. Further, the lower front side of the dust collection case 3 is formed with a curved portion 32 having an arcuate surface suitable for climbing over a threshold or the like. Also, this sled part 32
A handle 33 is formed between the suction port 23 and the suction port 23 . Furthermore, a rectangular dust collection bag mounting plate 34 is attached along the inside of the suction port 23 in the dust collection chamber 3a of the dust collection case 3, and a rectangular dust collection bag attachment plate 34 is attached to the inner surface of the lower front side of the dust collection case 3 from the suction port 12 to the suction port 23. The lower part of the dust collection bag mounting plate 34 is rotatably mounted in the dust collection chamber 3a with a hinge 35, and the dust collection bag mounting plate 34 is provided at right angles to the opposite diagonal. A torsion coil spring is provided that urges the plate 34 toward the suction port 23 side. Further, this dust collection bag mounting plate 34 is formed with a notch 36 for holding the dust collection bag 4 from above.

Further, the dust collection bag 4 is connected to the suction port 2 of the dust collection chamber 3a.
The cross-sectional shape from 3 toward the intake port 12 is approximately rectangular, and a rectangular mouth frame 42 with a dust collection port 41 opened in the center is attached to the opening of this dust collection bag 4. 42 is removably attached to the notch 36 of the dust bag mounting plate 34, the dust bag 4 is inserted diagonally into the dust collection chamber 3a along a diagonal line from the air inlet 12 to the air inlet 23. will be installed on the The bottom of the dust collection bag 4 mounted along the diagonal line from the intake port 12 to the intake port 23 faces the intake port 12 in this way, and the upper rear and bottom portions of the dust collection bag 4 are Between the side front part and the inner surface of the dust collection chamber 3a, there is a space that communicates with the intake port 12, respectively.
is formed.

Incidentally, an accessory storage section 51 for storing a folded dust collection bag 4 for replenishment is provided in the upper rear corner space formed between the dust collection bag 4 in the dust collection chamber 3a. The accessory storage section 51 is formed integrally with the lid 21. The accessory storage section 51 has a container section 52 for storing the dust collection bag 4 for replenishment, and a lid section 54 attached to the container section 52 via a hinge 53 so as to be openable and closable. The lid portion 54 has a knob 55 on its upper surface, and is adapted to be locked together with the lid body 21 in a closed state by the clamp 14.

Next, the operation of this embodiment will be explained.

When the electric blower 1 is driven during cleaning, the air sucked in from the suction pipe 24 enters the dust collection bag 4 from the suction port 23, and the filtered air flows into the dust collection bag 4.
and the inner surface of the dust collection chamber 3a of the dust collection case 3, is sucked into the electric blower 1 through the intake port 12, is exhausted through the exhaust port 11, and is placed in the dust collection bag 4 facing the intake port 12. Dust is accumulated and collected sequentially from the bottom. At this time, even if the rear part of the dust collection bag 4 facing the intake port 12 is clogged with dust, the space above and below the circumference is communicated with the intake port 12, and the filtered air from the dust collection bag 4 can be efficiently blown out. be exposed.

In addition, since the suction port 12 is formed diagonally from the suction port 12 at the lower rear side of the dust collection chamber 3a to the suction port 23 at the upper front side, the attached dust collection bag 4 drives the electric blower 1. The dust collection bag 4 easily expands, and even when the dust collection bag 4 is installed in a folded state, when the dust collection bag 4 expands, there are spaces at the top and bottom of the dust collection bag 4.
Since the dust collection bag 4 does not come into contact with the inner surface of the dust collection chamber 3a, the dust collection bag 4 inflates smoothly without being subjected to resistance, and the dust collection effect is not impaired.

In addition, the dust collection chamber 3a has a container portion 27 that protrudes from the inner surface of the lid body 21 in the space formed at the rear upper part of the attached dust collection bag 4, thereby reducing wasted space. There is a sled part 3 on the lower front side of the case 3.
Even if the dust collecting case 2 is formed, the space at the lower front side of the dust collecting case 3 is narrowed, and there is no need to enlarge the dust collecting case 3.

In addition, since the suction port 23 into which the suction pipe 24 is inserted opens diagonally, the suction pipe 24 protrudes diagonally upward.
It is easy to clean by holding the suction pipe 24, and as shown in FIG. The length of the suction pipe 24 can be supplemented when cleaning the top or the upper part of the wall.

When replacing the dust collection bag 4, as shown in FIG. After removal, the lid part 54 is opened, and the replenishment dust collection bag 4 is taken out from the accessory storage part 51 and attached to the dust collection bag mounting plate 34.

In addition, in the structure of the above embodiment, the accessory storage section 5
I stored the dust collection bag 4 for replenishment in 1, but
As shown in FIG. 4, accessories such as a suction nozzle 56 can also be housed.

Further, the accessory storage section 51 is not limited to the rear upper part of the dust collection chamber 3a, but may be formed at the front lower part, or can also be formed at the rear upper part and the front lower part.

[Effect of idea]

According to the present invention, the intake port communicating with the suction side of the electric blower is formed at the rear lower part of the dust collection chamber of the dust collection case, and the intake port extends diagonally from the intake port toward the front upper part of the dust collection chamber. The dust collection bag is opened towards the dust collector and installed in the dust collection chamber, and the dust collection bag is installed with a dust collection port communicating with the inside of the suction port, and is arranged along a diagonal line from the suction port to the rear air intake port. Therefore, the dust collection bag does not come into close contact with the inner surface of the dust collection chamber, and a ventilation gap is maintained at the top and bottom of the dust collection bag, allowing filtration from the entire surface of the dust collection bag, and the dust is collected on the inner surface of the dust collection chamber. There is no need to form ribs or the like to prevent the outer circumferential surface of the bag from coming into close contact with each other to maintain ventilation, which increases the filtration efficiency of the dust collection bag and improves the cleaning efficiency. When the dust collection bag is expanded by the suction force of the electric blower, whether it is folded or attached, the dust collection bag can be smoothly expanded without coming into contact with the inner surface of the dust collection case and receiving resistance.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the vacuum cleaner with the upper lid open, and Fig. 3 shows the vacuum cleaner in its state when being carried. FIG. 4 is a vertical sectional view of a vacuum cleaner showing another embodiment. 1...Electric blower, 2...Main case, 3...
Dust collection case, 3a...Dust collection chamber, 4...Dust collection bag, 1
2...Intake port, 23...Intake port.

Claims (1)

[Scope of Claim for Utility Model Registration] A main body case with a built-in electric blower, and an air inlet provided on the suction side of the main case, which forms a suction port on the front side and communicates with the suction side of the electric blower on the rear side. and a dust collection case having a dust collection chamber, the dust collection chamber of the dust collection case having a substantially rectangular cross section from the suction port toward the suction port, and the suction port being located at the lower rear side of the dust collection chamber. The suction port opens in a diagonal direction from the suction port toward the upper front side of the dust collection chamber, and the dust collection bag installed in the dust collection chamber draws air from the suction port. An electric cleaner characterized in that the cross-sectional shape toward the mouth side is approximately rectangular, and a dust collection port is connected to the inside of the suction port and is arranged along a diagonal line from the suction port to the rear intake port. Machine.