JPH0124498B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vacuum cleaner in which a mouth plate of a dust collection bag is detachably attached to a suction port leading to a dust collection bag storage chamber.

[Conventional technology]

Conventionally, this type of vacuum cleaner
As shown in No. 122662, the airtightness between the suction port and the mouth plate is maintained only by pressing the surface of the dust collection bag's mouth plate (paper bag mouth) against the packing provided at the suction port (paper bag mouth packing). The structure and Utsukai 49
- As shown in No. 111161, the suction port and the mouth plate are connected by screwing the dust collection port of the dust collection bag mouth plate into a truncated conical packing (bag adapter) with a spiral protrusion formed on the outer surface. As shown in Japanese Patent Application Laid-Open No. 155059/1983, a sliding connection tube is connected to the dust collection port (ventilation port) on the mouth plate of the dust collection bag by using a lever. A structure is known in which airtightness is maintained between the suction port and the mouth plate by press-fitting the suction port into the mouth plate.

[Problem to be solved by the invention]

In the structure of Utility Model Application Publication No. 49-122662, when the opening plate of the dust collection bag is pressed against the packing, the entire opening plate is bent, and the surface of the opening plate and the packing are not in sufficient contact. At the same time, the suction port and the dust collection port of the mouth plate may be misaligned, and a problem may occur in which the dust sucked in from the suction port collides with the edge of the dust collection port of the mouth plate.

In the structure of Utility Model Application Publication No. 49-111161, the dust collection port of the opening plate needs to be screwed into the spiral convex strip formed on the outer periphery of the truncated conical packing, so the dust collection in the dust collection chamber of the main body case is not possible. There are problems in that the work of attaching the dust bag is troublesome and it is not easy to use, and the opening plate is deformed and the airtightness between the opening plate and the spiral protrusion is not sufficiently achieved.

In the structure of JP-A No. 50-155059, the opening plate is generally made of a thin plate, and the fitting area between the dust collection port of the opening plate and the connecting tube is small, and the dust collection port of the opening plate is small. Since there are manufacturing errors in the diameter of the opening, there is a problem in that it is not possible to maintain sufficient airtightness between the opening plate and the connecting tube.

The present invention has been made with the above-mentioned problems in mind, and an object of the present invention is to provide a vacuum cleaner that has a simple structure and can reliably achieve airtightness between the mouth plate and the packing provided at the suction port. It is an object.

[Means to solve the problem]

The vacuum cleaner of the present invention has a structure including a dust collection bag storage chamber provided in the main body case, a suction port communicating with the dust collection bag storage chamber, and a dust collection bag stored in the dust collection bag storage chamber at the suction port. and a dust collection bag attachment packing for removably attaching the opening plate of the bag, and the dust collection bag attachment packing is integrally formed with a truncated conical part into which the dust collection port of the opening plate fits, and an outer periphery of the truncated conical part. and a recess formed at a connecting portion between the annular body and the truncated cone, and further, after fitting the dust collection port of the mouth plate to the truncated cone, the mouth plate is pressed against the dust collection bag attachment packing side, so that the annular body portion and the surface of the mouth plate come into close contact with each other, and the truncated conical portion and the dust collection port of the mouth plate are airtightly fitted. It is a feature.

[Effect]

After fitting the dust collection port of the opening plate into the truncated conical part of the dust collection bag mounting packing, if you press the opening plate against the dust collection mounting packing side, even if the opening plate is curved, it will not bend. is corrected, and the center of the dust collection port and the truncated cone are aligned, and the space between the annular body part of the dust collection bag attachment packing and the surface of the mouth plate and between the truncated cone part of the dust collection bag attachment packing is Closes tightly at two points between the mouth plate and the dust collection port. Since there is a recessed portion between these two locations and a labyrinth effect is obtained, the opening plate and the dust collection bag mounting packing are sufficiently airtight.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a main body case 1 of this vacuum cleaner includes an electric blower 2 and a paper dust collection bag 3.

A dust bag storage chamber 4 in which the dust bag 3 is housed has an opening at the top. A dust collection bag lid 5 that closes this opening is removably attached to the main case 1.

Electric blower storage chamber 6 for storing electric blower 2
As shown in FIGS. 1 and 3, there is a protective ventilation plate 7 for the electric blower 2 in the front part of the electric blower storage chamber 6.
Mounting groove 8 for inserting and installing from above
form.

An exhaust chamber 9 is provided at the rear of the electric blower storage chamber 6. An exhaust port 10 is provided in the rear wall of the exhaust chamber 9. The electric blower storage chamber 6 is communicated with the exhaust chamber 9 through an exhaust passage 11.

The cord reel 12 is attached to a cord reel storage chamber 13 provided next to the electric blower storage chamber 6, as shown in FIGS. 2 and 3.

The electric blower upper cover 14 is screwed to the main body case 1 so as to cover the electric blower 2 from above, as shown in FIGS. 1 and 2. Since the electric blower 2 stored in the electric blower storage chamber 6 is held in place by the electric blower upper cover 14, there is no particular need for fixing screws or the like for the electric blower 2.

The main body case upper cover 15 is attached to the main body case 1 from above the electric blower upper cover 14, as shown in FIGS. 1 and 2. The cord reel 12 is also covered with the main body case upper cover 15.

The electric blower upper cover 14 is attached to the electric blower 2
It is made of plastic to cover it insulatively. Electrical parts such as a switch are attached to the upper surface of the electric blower upper cover 14. This is advantageous in terms of insulation since the electric blower top cover 14 is made of plastic.

That is, as shown in FIGS. 1 and 2, the output selector switch 16 is connected to the electric blower upper cover 14.
Attach it to the output selector switch housing 17 provided in the.

As shown in FIG. 2, a switch petal 18 and a cord reel petal 19 are attached to the main body case upper cover 15. The switch petal 18 and the cord reel petal 19 can rotate around the pin. The switch petal 18 and the cord reel petal 19 are pushed upward by springs 20 and 21. For this reason, both petals 18 and 19 return to their original positions even if they are pressed down.

A main body case packing 22 is attached around the upper surface of the main body case 1. This is made of an elastic material such as soft vinyl chloride. Since the outer periphery of the main body case 1, that is, the outer periphery of the vacuum cleaner, is almost surrounded by the main body case packing 22, the vacuum cleaner will not be damaged even if it hits furniture. Of course, furniture will not be damaged either. Main body case packing 2 at the joint between main case 1 and main case upper cover 15
2 is interposed, the appearance can be easily matched.

The hose connection stand 23 is
As shown in the figure, it is attached to the front of the main body case 1. The suction port 24 of the main body case 1 communicates with the hose hole 25 of the hose connection stand 23.

A dust collection bag attachment packing 26 is attached to the suction port 24. This dust collection bag mounting packing 26 is
It is attached by fitting an annular groove 27 formed on the outer periphery into the suction port 24. The dust collection bag installation packing 26 is
Since it is made of rubber, it is easy to attach to the suction port 24. The check valve 28 is attached to the dust collection bag mounting packing 2.
6 is integrally formed.

The dust collection bag attachment packing 26 includes a truncated cone portion 26a into which the dust collection port 21a of the opening plate 29 fits, and an annular body portion 26b integrally formed on the outer periphery of the truncated cone portion 26a.
and a recess 26c formed at a connecting portion between the annular body portion 26b and the truncated cone portion 26a.

The mouth plate 29 is made of hard cardboard. This opening plate 29 is fixed to the suction port 24 by a dust collection bag stopper 30 shown in FIGS. 1, 2, 3, and 4. A locking step is formed on the outer periphery of the opening plate 29, and the dust bag stopper 30 is hung on this step.

The dust bag stopper 30 has a pair of attachment parts 31, 31.
a, a pair of helical parts 32, 32a, a pair of locking parts 33, 33a, and a joint part 34, which are formed by bending a single steel wire. The dust collection bag stopper 30 has its mounting portions 31, 31a fixed with screws 3.
5, it is installed in the dust collection bag storage chamber 4 by fixing it near the suction port 24.

This dust collection bag stopper 30 has helical portions 32, 3.
2a, by pressing the operation part 34, the locking part 33,
33a moves easily.

The thyristor 36 is placed between the protective ventilation plate 7 and the electric blower 2. The thyristor 36 is a power semiconductor of the control circuit, and, as shown in FIG. 5, directly turns on and off the load current of the electric blower 2. The thyristor 36 is cooled by air drawn into the electric blower 2 and cooling fins 37 provided on the thyristor 36.

The indicator 38 is attached to the dust bag lid 5 as shown in FIGS. 1 and 2. The inside of the dust bag lid 5 communicates with the indicator 38. When the pressure inside the dust collection bag storage chamber 4 changes, the display on the indicator 38 changes.

The indicator 38 is attached to the dust collection bag lid 5 by covering it with an indicator presser 39.

A main body case handle 40 is formed at the front part of the main body case 1. A lid handle 41 is formed at the front part of the dust collection bag lid 5.

A locking body 42 for locking the lower end of the mouth plate 29 is formed integrally with the main body case 1 on the inner bottom of the dust collection bag storage chamber 4 in the vicinity of the suction port 24.

A net filter 43 is provided in the dust collection bag storage chamber 4 on the downstream side of the dust collection bag 3. This net filter 43 is vibrated by the striking body 44. The clogging of the dust collection bag 3 is removed by the vibration of the net filter 43.

In the above configuration, in order to attach the opening plate 29 of the dust collection bag 3 to the suction port 24, the lower end of the opening plate 29 is locked to the locking body 42, and the dust collection opening 29a of the opening plate 29 is The upper end of the opening plate 29 may be locked to the locking portions 33, 33a of the dust collection bag stopper 30 while fitting into the truncated conical portion 26a of the bag attachment packing 26. In this case, the mouth plate 29 is strongly pushed toward the dust bag mounting packing 26 by the spring force of the dust bag stopper 30. As a result, the mouth plate 29
2 between the dust collection port 29a and the truncated conical portion 26a of the dust collection bag attachment packing 26, and between the surface of the opening plate 29 and the annular body portion 26b of the dust collection bag attachment packing 26.
Close contact in certain places. At that time, even if the mouth plate 29 is curved, the curve is corrected, and the dust collection port 29
The center of a matches the center of the suction port 24. Moreover, the truncated conical portion 26a of the dust collection bag attachment packing 26
The concave portion 26c between the annular body portion 26b and the annular body portion 26b exhibits a labyrinth effect when the mouth plate 29 is brought into close contact with the annular body portion 26b.
Therefore, the mouth plate 29 and the dust collection bag attachment packing 2
6 is sufficiently airtight, and the dust flowing into the suction port 24 flows into the dust collecting bag 3 without leaking into the dust collecting bag storage chamber 4.

To remove the opening plate 29 of the dust collection bag 3 from the suction port 24, while pulling up the operation part 34 of the dust collection bag stopper 30, hold the upper end of the opening plate 29 and remove the opening plate 29.
Pull it diagonally upward. In this way, the mouth plate 29 can be attached to the dust collection bag attachment packing 26 and the locking body 4.
It's easy to get away from 2.

Even if the position and inner diameter of the dust collection port 29a of the mouth plate 29 are deviated due to manufacturing errors, when the dust collection port 29a fits into the truncated conical portion 26a of the dust collection bag attachment packing 26, it will align with the center of the suction port 24. Since the center of the dust collection port 29a coincides with the center of the truncated conical portion 26a, the port plate 29 does not protrude into the dust passage of the suction port 24, and does not impede the flow of dust. Since the outer periphery is a tapered surface, the dust collection port 29a of the opening plate 29 reliably comes into close contact with the outer periphery of the truncated conical portion 26a.

〔Effect of the invention〕

As described above, according to the present invention, the dust collection bag attachment packing includes a truncated cone portion into which the dust collection port of the mouth plate fits, an annular body portion integrally formed on the outer periphery of the truncated cone portion, and a concave portion formed at a connecting portion between the annular body portion and the truncated cone portion; and after fitting the dust collection port of the mouth plate to the truncated cone portion, the mouth plate is attached to the dust collection bag attachment packing side. By pressing the annular body into close contact with the surface of the opening plate, the truncated conical part and the dust collection port of the opening plate are airtightly fitted, so that the structure is simple and and,
To obtain a vacuum cleaner that can reliably achieve airtightness between the mouth plate and the dust collection bag mounting packing provided at the suction port.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a vertical cross-sectional view of the entire vacuum cleaner, and FIG.
The figure is an exploded perspective view of the entire vacuum cleaner.
The figure is an exploded perspective view of the main body case side, Figure 4 is an enlarged cross-sectional view of the main parts, Figure 5 is a circuit diagram, Figure 6 is an enlarged perspective view of the main parts, and Figure 7 is an enlarged cross-sectional view of the main parts. . DESCRIPTION OF SYMBOLS 1...Main body case, 2...Electric blower, 3...Dust collection bag, 4...Dust collection bag storage chamber, 24...Suction port, 26...Dust collection bag mounting packing, 26a...Truncated conical part, 26b
...Annular body part, 26c...Recessed part, 29... Mouth plate, 29a
...Dust collection port.

Claims (1)

[Claims] 1 A dust collection bag storage chamber 4 provided in the main body case 1, a suction port 24 leading to the dust collection bag storage chamber 4, and a suction port 24 for the dust collection bag 3 to be stored in the dust collection bag storage chamber 4. A dust collection bag attachment packing 26 is provided to removably attach the opening plate 29, and the dust collection bag attachment packing 26 includes a truncated conical portion 26a into which the dust collection opening 29a of the opening plate 29 fits, and a truncated conical portion 26a. It has an annular body part 26b integrally formed on the outer periphery of 26a, and a recess part 26c formed at a connecting part between this annular body part 26b and the truncated conical part 26a, and furthermore, the mouth plate 2
After fitting the dust collection port 29a of No. 9 into the truncated cone portion 26a, the mouth plate 29 is attached to the dust collection bag attachment packing 2.
6 side, the annular body portion 26
b and the surface of the mouth plate 29 come into close contact, and
The truncated cone portion 26a and the dust collection port 29 of the mouth plate 29
A vacuum cleaner, characterized in that (a) and (a) are airtightly fitted.