JPH07136082A - Upright type vacuum cleaner - Google Patents

Abstract

PURPOSE:To provide an upright type vacuum cleaner in the application of the recirculation system which can improve the dust collection performance and reduce the traveling resistance. CONSTITUTION:A discharge opening 34 for blowing out the counter current of a motor-driven blower 19 is formed on the nozzle part traveling direction side of a suction opening 28 formed at the nozzle part 27 of a cleaner body 24. The dust of a cleaned surface 37 is blown up and collected from a suction opening 28 by blowing the counter current supplied from the discharge opening 34 onto the surface to be cleaned 37.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upright type electric vacuum cleaner which utilizes the wake of an electric blower for cleaning.

[0002]

2. Description of the Related Art A conventional upright type vacuum cleaner will be described below with reference to FIGS. In the figure,
1 is an electric blower, and a dust bag 2 is attached to the rear part thereof. The electric blower 1 and the dust collecting bag 2 are the cleaner body 6
It is housed in the main body cover 3 at. The main body cover 3 is provided with a lid 4 for putting in and taking out the dust collecting bag 2, and the cleaner body 6 is provided with a handle 5 used for moving. The cleaner body 6 is provided with an exhaust port 7 for discharging the wake 8 of the electric blower 1 to the outside, and the cleaner body 6 is provided with a nozzle portion 9 at a lower portion thereof. The nozzle portion 9 has a suction port 10 for sucking dust, a suction passage 11 for guiding the dust to the dust collecting bag 2, and a rotary brush 14 for scraping dust trapped in the fibers.
Is provided, and this rotating brush 14 is located in the area of the suction port 10.

In the figure, 12 is a suction flow passing through the suction flow path 11, 13 is an inlet to a dust collecting bag, and 15 and 1 are shown.
Reference numeral 6 is a front wheel and a rear wheel for allowing the cleaner to travel stably, and 17 is a motor provided in the nozzle portion 9 for driving the rotary brush 14 via the belt 18.

In the above structure, when the electric blower 1 is operated by turning on the power, the wake 8 and the suction flow 12 of the electric blower 1 are generated at the same time. The wake 8 is discharged to the outside of the cleaner body 6 through the exhaust port 7. The rotating brush 14 driven by the motor 17 scrapes up dust that is entangled in the fibers. This dust is sucked from the suction port 10 by the suction flow 12, and the suction flow path 11
It is guided to the dust collecting bag 2 through and accumulates here.

[0005]

However, in the above-mentioned conventional structure, the dust adhering to the surface to be cleaned is scraped up by the rotary brush 14, but its dust collection efficiency is not sufficient. Further, the wake 8 from the electric blower 1 is immediately discharged to the outside of the cleaner body 6, so that minute dust is also discharged, and the running resistance between the nozzle portion 9 and the surface to be cleaned is large.
Had problems such as.

The present invention solves the above-mentioned conventional problems by improving the dust collection efficiency and preventing the discharge of minute dust.
It is a first object of the present invention to provide an upright type electric vacuum cleaner with reduced running resistance.

A second object of the present invention is to provide a means capable of ensuring a sufficient dust collecting efficiency even in the case of fishing for achieving the first object. The third purpose is
To achieve the second object, it is to provide another means for further improving the dust collection efficiency.

A fourth object of the present invention is to provide another means for further improving the dust collection efficiency in achieving the second object. Further, a fifth object is to provide means for realizing a beautiful external shape in achieving the first or second object.

[0009]

In order to achieve the first object, the first means of the present invention is to provide a cleaner main body having an electric blower and a dust bag inside, and an upper part of the cleaner main body. A handle part, a nozzle part provided at the bottom of the cleaner body, a suction port for sucking dust provided in the nozzle part, and a suction channel for guiding dust from the suction port to the dust collecting bag. In an upright electric vacuum cleaner provided with, a blowout port provided near the suction port for blowing a wake of the electric blower to the surface to be cleaned, and a return path for guiding the wake to the blowout port are provided. It has a different configuration.

A second means of the present invention for achieving the second object is, in addition to the first means, a rotary brush is provided in the area of the suction port, and the blowing port is provided for running the nozzle portion of the suction port. It is arranged on the direction side.

Further, in order to achieve the third object, the third means of the present invention is, in addition to the second means, a plane substantially parallel to the surface to be cleaned on the nozzle portion traveling direction side of the outlet. A part is provided.

Further, in order to achieve the fourth object, in addition to the second means, the fourth means of the present invention is such that the blow-out opening has a predetermined shape so as to blow out in the direction of the suction opening with respect to the surface to be cleaned. The structure is maintained at an angle.

Further, in order to achieve the fifth object, the fifth means of the present invention is, in addition to the first to fourth means, a part of the suction flow path and a part of the return path are the cleaner main body. It is formed as a hose on the outside, and each hose is arranged in a substantially symmetrical position about the cleaner body as an axis.

[0014]

In the first means of the present invention described above, since the wake of the electric blower is blown to the surface to be cleaned near the suction port provided in the nozzle portion, dust on the surface to be cleaned is blown up. Dust collection becomes easier and dust collection efficiency improves. Further, since the wake is not immediately discharged to the outside of the cleaner body but used for cleaning, it is possible to prevent discharge of fine dust. Further, since the wake is blown to the surface to be cleaned, buoyancy is generated in the nozzle portion, and the running resistance is reduced.

Further, according to the second means of the present invention, since the rotary brush is provided in the area of the suction port and the blowing port is arranged on the nozzle portion traveling direction side of the suction port, the rotary brush is provided. The dust is picked up by the dust and acts so as to ensure a sufficient dust collection efficiency even in dusting.

Further, according to the third means of the present invention, since the flat portion that is substantially parallel to the surface to be cleaned is provided on the nozzle portion traveling direction side of the outlet, it flows into the suction inlet. The air is rectified, and the dust collection efficiency is further improved.

Further, according to the fourth means of the present invention, since the blowout port is maintained at a predetermined angle so as to blow out toward the suction port with respect to the surface to be cleaned, dust is blown up toward the suction port. And the dust collection efficiency is further improved.

In the fifth means of the present invention, a part of the suction flow path and a part of the return flow path are formed as hoses outside the cleaner body, and each hose is substantially symmetrical about the cleaner body as an axis. Since it is arranged at various positions, the upright electric vacuum cleaner has a beautiful appearance.

[0019]

【Example】

(Embodiment 1) An embodiment of the first means of the present invention will be described with reference to FIGS. In the figure, 19 is an electric blower, and a dust bag 20 is attached to the rear part thereof.
The electric blower 19 and the dust bag 20 are housed in the main body cover 21 of the cleaner main body 24, and the main body cover 2
1 is provided with a lid 22 for taking in and out the dust collecting bag 20. The cleaner body 24 is provided with a handle 23 for movement, and the body cover 21 is provided with an exhaust port 25 for discharging the wake 26 of the electric blower 19 to the outside of the cleaner body 24. A nozzle portion 27 for sucking dust is arranged at the bottom of the cleaner body 24, and a suction port 28 for sucking dust is provided in the nozzle portion 27. The suction port 28 and the dust collecting bag 20 are connected by a suction passage 29.

The characteristic configuration of this embodiment is as follows. That is, the air outlet 34 facing the surface 37 to be cleaned is provided in the nozzle portion 27 and on the traveling direction side.
4, a part 33 of the wake 26 of the electric blower 19 is connected to the return path 32.
It is configured to be refluxed with. In the figure, 30 is a suction flow passing through the suction passage 29, 31 is an entrance to a dust collecting bag, and 35 and 36 are front wheels and rear wheels for stably running the cleaner. .

In the above structure, when the electric blower 19 is operated by turning on the power, the wake 26, a part 33 of the wake 26 and the suction flow 30 are simultaneously generated. The wake 26 is the exhaust port 2
It is discharged to the outside of the cleaner body 24 through the unit 5. Wake 2
Part 33 of 6 is blown toward the surface 37 to be cleaned from the outlet 34 through the return path 32. This allows
The dust on the surface 37 to be cleaned is blown up, is further sucked by the suction flow 30 from the suction port 28, is guided to the dust collecting bag 20 through the suction flow path 29, and is accumulated there.

As described above, since the entire wake 26 of the electric blower 19 is not discharged, the part 33 of the wake 26 is blown to the surface 37 to be cleaned near the suction port 28 provided in the nozzle portion 27. The dust on the surface 37 to be cleaned is blown up, and the dust collection efficiency is improved. Moreover, since all the wakes 26 are not immediately discharged to the outside of the cleaner body 24, it is possible to prevent the discharge of the fine dust. Further, since the part 33 of the wake 26 is blown to the surface 37 to be cleaned, the buoyancy F1 is generated in the nozzle portion 27, and the running resistance is reduced. Thus, it has become possible to obtain an upright electric vacuum cleaner superior to the conventional one. (Embodiment 2) An embodiment of the second means of the present invention will be described with reference to FIGS. The basic structure of the upright type electric vacuum cleaner of the present embodiment is the same as that of FIG. 1, and therefore its explanation is omitted, and the different points will be mainly described. In the figure, 38 is a nozzle portion arranged at the bottom of the cleaner body, 39 is a suction port for sucking dust, 40 is a suction flow channel for guiding dust to a dust collecting bag, and 41 is a suction flow channel 40. Reference numeral 42 is a return flow path for guiding a part 43 of the downstream flow of the electric blower to the outlet 44.

The feature of the present embodiment is that the blow-out port 44 is arranged on the nozzle portion traveling direction (x1 direction) side of the suction port 39. The rotary brush 45 is provided in the area of the suction port 39. In the figure, 46 is a front wheel, 47 is a surface to be cleaned, 48 is a motor which is provided in the nozzle portion 38 and drives the rotating brush 45 via a belt 49, and 50 is a rear wheel.

In the above-mentioned structure, when the electric blower is operated by turning on the power, the wake and the part 43 and the suction flow 41 are simultaneously generated. The part 43 of the wake is the return path 42.
It is sprayed from the outlet 44 toward the surface 47 to be cleaned. As a result, dust on the surface 47 to be cleaned is blown up, and the suction flow 41 further causes the suction port 3
9 is sucked in, is guided to the dust collecting bag through the suction flow path 40, and is accumulated there. On the other hand, the rotating brush 45 driven by the motor 48 picks up dust that is entangled in the fibers. This dust is sucked from the suction port 39 by the suction flow 41, is guided to the dust collecting bag through the suction passage 40, and is accumulated there.

As described above, since all of the wake of the electric blower is not discharged, the part 43 of the wake is blown to the surface to be cleaned 47 near the suction port 39 provided in the nozzle portion 38, so that the part to be cleaned is cleaned. The dust on the surface 47 is blown up, and the dust collection efficiency is improved. On the other hand, since dust that is entangled in the velves and the like that does not blow up even if a part of the wake 43 is blown up is scraped up by the rotating brush 45, sufficient dust collection efficiency can be secured even in the velves and other surface conditions. It can also be used on the surface to be cleaned. Moreover, since all the wakes are not immediately discharged to the outside of the cleaner body, it is possible to prevent discharge of fine dust. Further, since the part 43 of the wake is sprayed on the surface 47 to be cleaned, the buoyancy F2 is applied to the nozzle portion 38.
Occurs, and the running resistance is reduced. As described above, it has become possible to obtain an upright electric vacuum cleaner that is superior to the conventional one while ensuring sufficient dust collection efficiency even in the case of rust. (Embodiment 3) An embodiment of the third means of the present invention will be described with reference to FIG. The basic structure of the upright type electric vacuum cleaner of the present embodiment is the same as that of FIG. 1, and therefore its explanation is omitted, and the different points will be mainly described. In the figure, 51 is a nozzle portion arranged at the bottom of the cleaner body, 52 is a suction port for sucking dust, 53 is a suction flow channel for guiding dust to a dust collecting bag, and 54 is a suction flow channel 53. Suction flow through,
Reference numeral 55 is a return path for guiding a part 56 of the wake of the electric blower to the outlet 57.

The feature of this embodiment is that a flat surface portion 58, which is substantially parallel to the surface to be cleaned 61, is provided on the nozzle portion traveling direction (x2 direction) side of the air outlet 57. In the figure, 59 is a rotating brush provided in the area of the suction port 52, 60 is a front wheel, and 63 is a gap formed by the flat surface portion 58 and the surface 61 to be cleaned.

The operating state of each element and the cleaning mechanism during the operation of the vacuum cleaner having the above-described structure are the same as those in the second embodiment, and therefore the description thereof will be omitted. However, the flat portion 58 is newly provided in the present embodiment, and the effect thereof will be described. Since the air flow 62 generated when a part of the air outside the nozzle portion 51 is drawn into the suction port 52 by the suction flow 54 is rectified by the gap 63,
The dust blown up by the part of the wake 56 is efficiently sent to the suction port 52. As described above, in the present embodiment, the dust collection efficiency can be further improved as compared with the second embodiment. (Embodiment 4) An embodiment of the fourth means of the present invention will be described with reference to FIG. The basic structure of the upright type electric vacuum cleaner of the present embodiment is the same as that of FIG. 1, and therefore its explanation is omitted, and the different points will be mainly described. In the figure, 64 is a nozzle portion arranged at the bottom of the cleaner body, 65 is a suction port for sucking dust, 66 is a suction flow passage for guiding dust to a dust bag, and 67 is a suction flow passage 66. Suction flow through,
Reference numeral 68 is a return path for guiding a part 69 of the wake of the electric blower to the outlet 70, and 71 is provided on the nozzle traveling direction (x3 direction) side of the outlet 70 and is provided substantially to the surface 72 to be cleaned. It is a parallel plane part.

The characteristic feature of the present embodiment is that the outlet 70 is maintained at an angle p ° of 90 ° or less so that a part 69 of the wake is blown toward the surface 72 to be cleaned toward the inlet 65. It is in the structure. 73 in the figure is the suction port 6
5 is a rotating brush provided in the area of 5, 5 is a front wheel, 7
5 is an air flow generated when a part of the air outside the nozzle portion 64 is drawn into the suction port 65 by the suction flow 67, and 76 is a part of the wake 69 passing through the discharge port 70 to the surface to be cleaned 72. The air flow that is sent to the suction port 65 after hitting, 77 is the air flow that flows in the direction opposite to the suction port 65 after a part of the wake 69 passes through the blowing port 70 and hits the surface to be cleaned 72, and 78 is a flat surface Part 71 and surface to be cleaned 7
It is a gap formed by 2.

Since the operating state of each element and the cleaning mechanism when the cleaner is operated in the above-mentioned configuration are the same as those in the third embodiment, the description thereof will be omitted. In the present embodiment, the blowout port 70 is maintained at a predetermined angle p ° so as to blow out a part 69 of the wake in the direction of the suction port 65 with respect to the surface to be cleaned 72, and the effect thereof will be described. The relationship between the quantitative ratios of the air flow 76 and the air flow 77 is such that the ratio of the air flow 77 increases when the angle p ° is larger than 90 °, and the angle p ° is 9 °.
If it is smaller than 0 °, the proportion of the air flow 76 becomes large. Here, if the ratio of the air flow 77 is large, the dust blown up will go in the direction opposite to the suction port 65, and the dust collection efficiency will decrease. Further, the airflow 75 that should be rectified by the gap 78 formed by the flat surface portion 71 and the surface to be cleaned 72 collides with the airflow 77 and becomes unrectified, and the dust collection efficiency is also reduced. Therefore, the smaller the air flow 77, the higher the dust collection efficiency. In this embodiment, since the angle p ° is 90 ° or less, the ratio of the air flow 77 is small and therefore the dust collection efficiency is high. As described above, in the present embodiment, the dust collection efficiency can be further improved as compared with the third embodiment. (Embodiment 5) An embodiment of the fifth means of the present invention will be described with reference to FIG. The basic structure of the upright type electric vacuum cleaner of the present embodiment is the same as that of the other embodiments, and therefore the description thereof will be omitted, and the difference will be mainly described. In the figure, 79 is a cleaner body, 80 is a handle used to move the cleaner body 79,
Reference numeral 81 denotes a nozzle portion arranged below the cleaner body 79.

In the characteristic construction of this embodiment, a part 82 of the suction passage and a part 83 of the return passage are respectively provided in the cleaner main body 7.
9 is formed as a hose on the outside of the cleaner 9, and the cleaner main body 79
It is arranged in a substantially symmetrical position about the axis.

The operating state of each element and the cleaning mechanism during the operation of the vacuum cleaner with the above-described structure are the same as those in the other embodiments. In this embodiment, a part 82 of the suction flow path and a part 83 of the return path are formed as hoses outside the cleaner main body 79, and the hoses are arranged substantially symmetrically with the cleaner main body 79 as an axis. With such a configuration, it is possible to obtain an upright vacuum cleaner having a beautiful external shape.

[0032]

As is apparent from the above description of each embodiment, the upright type electric vacuum cleaner of the first means of the present invention is
Since it has a configuration provided near the suction port of the nozzle, and has a blowout port for blowing the wake of the electric blower onto the surface to be cleaned, and a return path for guiding the wake to the blowout port, The dust collection efficiency is improved, the discharge of minute dust is prevented, and the running resistance is reduced.

Further, the upright type electric vacuum cleaner of the second means has a structure in which the rotary brush is provided in the area of the suction port, and the blowout port is arranged on the nozzle portion running direction side of the suction port. Also, sufficient dust collection efficiency can be ensured even in the case of rust.

Further, the upright type electric vacuum cleaner of the third means has a construction in which a flat surface portion which is substantially parallel to the surface to be cleaned is provided on the nozzle portion traveling direction side of the air outlet. The dust collection efficiency is improved.

Further, in the upright type electric vacuum cleaner of the fourth means, the outlet has a structure in which the outlet is maintained at a predetermined angle so as to blow out a wake toward the inlet to the surface to be cleaned. Therefore, the dust collection efficiency is further improved.

Further, in the upright type electric vacuum cleaner of the fifth means, a part of the suction flow path and a part of the return flow path are formed as hoses outside the cleaner main body, and each hose is centered on the cleaner main body. The vacuum cleaner has a beautiful external shape because it has a configuration in which it is disposed at substantially symmetrical positions.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of an upright electric vacuum cleaner according to a first embodiment of the present invention.

FIG. 2 is a plan sectional view of a nozzle portion viewed from the direction of arrow b in FIG.

FIG. 3 is a schematic sectional view of an upright type electric vacuum cleaner according to a second embodiment of the present invention.

FIG. 4 is a plan sectional view of a nozzle portion viewed from the direction of arrow c in FIG.

FIG. 5 is a schematic cross-sectional view of a nozzle portion of an upright type vacuum cleaner according to a third embodiment of the present invention.

FIG. 6 is a schematic sectional view of a nozzle portion of an upright electric vacuum cleaner according to a fourth embodiment of the present invention.

FIG. 7 is a perspective view of an upright electric vacuum cleaner according to a fifth embodiment of the present invention.

FIG. 8 is a schematic sectional view of a conventional upright electric vacuum cleaner.

9 is a plan cross-sectional view of the nozzle portion viewed from the direction a in FIG.

FIG. 10 is a perspective view of a conventional upright vacuum cleaner.

[Explanation of symbols]

 19 Electric blower 20 Dust collection bag 23 Handle 24 Vacuum cleaner body 27 Nozzle part 28 Suction port 29 Suction flow path 32 Reflux path 34 Outlet port 37 Surface to be cleaned

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masami Fukumoto 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Hirohide Miwa 6-7-10 Miyazaki, Miyazaki-ku, Kawasaki-shi, Kanagawa

Claims (5)

[Claims] 1. A cleaner main body having an electric blower and a dust bag inside, a handle for moving the cleaner main body, a dust suction nozzle section provided in the cleaner main body, and a nozzle section provided on the nozzle section. A suction port for sucking dust and a suction flow path for guiding dust from the suction port to the dust collecting bag are provided near the suction port to blow the wake of the electric blower on the surface to be cleaned. An upright electric vacuum cleaner having a blow-out port and a return passage for guiding the wake to the blow-out port. 2. The upright electric vacuum cleaner according to claim 1, wherein a rotary brush is provided in a region of the suction port, and the blowout port is disposed on the nozzle portion traveling direction side of the suction port. 3. The upright electric vacuum cleaner according to claim 2, wherein a flat surface portion substantially parallel to the surface to be cleaned is provided on the nozzle portion traveling direction side of the outlet. 4. The upright electric vacuum cleaner according to claim 2, wherein the outlet is maintained at a predetermined angle with respect to the surface to be cleaned so as to blow out a wake in the direction of the inlet. 5. A part of the suction flow path and a part of the return path are formed as hoses outside the cleaner body, and the hoses are arranged at substantially symmetrical positions about the cleaner body as an axis. 5. The upright electric vacuum cleaner according to any one of 1 to 4.