JPH06181867A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To improve convenience in use by employing such structure that the rotating diameter of a cleaner main body can be reduced and small sharp turn can be performed and a state can be returned to a normal state even when a cleaner falls down and it can easily be moved, to sufficiently secure an exhaust area in an upright state, and to keep safety or sucking performance in the upright state. CONSTITUTION:A wheel 27 for movement is provided in almost the center of the side plane of a main body 26, and the outer hull of the main body 26 is formed in almost circular arc shape advancing the lower front side and lower rear side of the main body 26 setting the upper side of the wheel 27 for movement as an apex observing from a lateral direction, and the front of the wheel 27 for movement in almost circular arc shape setting a center C as the apex observing from the upper direction, and also, the rear of the wheel in almost circular arc shape setting a center D as the apex, and the wheel is formed in almost semi-spherical shape as a whole, and a rest part 30 is provided at the upper rear part and a supporting tool 31 at the upper rear part of the main body 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner used in general households.

[0002]

2. Description of the Related Art Conventionally, household vacuum cleaners are disclosed in Japanese Patent Publication No.
The configuration shown in Japanese Patent No. 4683 was common. The configuration will be described below with reference to FIGS. 6 to 7.

The main body 1 comprises an electric blower chamber 3 containing an electric blower 2, a dust collecting chamber 5 containing a dust collecting bag 4, a cord winding device 6 and the like. Further, the main body 1 has a handle 7 on the front portion.
An intake port 8 is formed, a hose 9 is fitted into the intake port 8 via a connection pipe 10, and the other end is provided with an extension pipe 12 via a tip pipe 11, and the extension pipe 12 is provided with a floor suction tool 13. Mated. A lid 14 that can be opened and closed is provided on the upper part of the dust collection chamber 5. In addition, a rest portion 15 and moving wheels 16 are provided on the left and right sides of the main body 1 so that the main body 1 can be stored upright. Further, the extension pipe 12 can also be housed by being held in the groove 18 provided in the main body 1 via the holder 17.

[0004]

In such a conventional electric vacuum cleaner, the main body 1 is moved upright so that the extension pipe 12 is fixed to the main body 1 via the holding tool 17 and stored for stability. Widen between the wheel 16 and the rest portion 15,
The rear surface of the main body 1 was angular. Therefore, the main body 1
The radius of gyration became large, and the maneuverability was poor, resulting in poor operability. Also, if the corner hits furniture, etc., it could be damaged. Further, even when the vacuum cleaner is operated in an upright state, for example, when cleaning a high place such as on a shelf, the exhaust area is limited to only the inclined portion A in FIG. 6 and the exhaust is blocked so that the electric blower 2 is overloaded and overheated. There was a risk to Further, there is a problem that normal suction performance cannot be obtained due to exhaust pressure loss.

The present invention is intended to solve the above problems, and (1) improves the operability, that is, the mobility of the cleaner.

(2) The safety is improved by ensuring a sufficient exhaust area in the upright state of the main body. That is the purpose.

[0007]

[Means for Solving the Problems]

(1) In order to solve the above-mentioned problems, the present invention provides moving wheels on both sides of a center of a main body side and moving casters behind a bottom surface of the main body so that the main body has a substantially hemispherical shape and front of the moving wheels of the main body. The bottom surface of the portion is inclined upward in the forward direction, and the intake port is inclined upward in the forward direction.

(2) The present invention has a structure in which an exhaust hole is further provided on the rear surface of the above structure, a rest portion is provided on the bottom rear portion of the main body, and a support tool is provided on the upper rear portion to enable the main body to be supported upright.

[0009]

[Action]

(1) According to the present invention, since the solid body has a substantially hemispherical shape, the radius of gyration of the main body can be reduced, a small turning effect can be obtained, and mobility can be improved. In addition, it is easy to return to a normal state even if you fall.
In addition, since a moving wheel is provided in the center of the side surface of the main body and the intake port is inclined forward and upward, when the hose is pulled and moved during cleaning, the rear part is separated from the floor and a load is applied only to the moving wheel to prevent movement. It gets lighter. Moreover, since the front of the bottom surface of the main body is inclined upward, steps such as steps can be easily overcome.

(2) According to the present invention, by further providing the rest portion on the bottom rear portion of the main body and the support tool on the upper rear portion, the exhaust region in the upright state is sufficiently secured in combination with the main body having a substantially hemispherical shape. It is possible to prevent deterioration of suction performance due to overheating of the electric blower or exhaust pressure loss.

[0011]

1 and 2 show an embodiment of the present invention, in which a mechanism chamber 21 equipped with an electric blower 19 and a cord winding device 20, and a dust collection chamber 23 containing a dust bag 22 are provided. A main body 26 is formed by an intake port 24, an exhaust hole 25, etc., each having a rear part and a front part, and further inclined upward in the front direction. Further, transfer wheels 27 are provided on both sides of the center of the main body 26, and casters 28 are provided on the rear bottom surface of the main body 26.
Further, the outer shape of the main body 26 has a substantially arcuate shape toward the front lower side and the rear lower side of the main body 26 with the upper side of the moving wheel 27 as an apex as shown in R2 when seen from the side, and the moving wheel is seen from above. The front of 27 has a substantially arcuate shape with the center C as the apex, and the rear of the 27 has a substantially arcuate shape with the center D as the apex, which is generally hemispherical.

The outer shape of the main body 26 has a substantially elliptical structure as viewed from above, and the moving wheels 27 are provided in the substantial center of the side surface of the main body 26. It works well and has good mobility. Further, even when the main body 26 hits an obstacle during movement, it is easy to avoid along the outer contour. Further, when the bumper 24 and the like are provided on the main body 26, it is effective that obstacles such as furniture are not easily scratched. Further, the moving wheel 27 is provided substantially in the center of the side surface of the main body, and the front bottom portion of the main body 26 is inclined forward and upward, so that a step or the like can be easily overcome. Further, by tilting the intake port 24 upward in the forward direction, pulling the hose when the cleaner is used causes a downward force in the front around the moving wheel 27 and an upward force in the rear. Body 26
The rear side is separated from the floor, and the entire load of the main body 26 is applied to the moving wheels 27 to facilitate the movement of the main body 26. Moreover, since it has a generally hemispherical shape as a whole, it can easily return to a normal state even when it falls. The shape shown in the figure is not limited.

Next, another embodiment of the present invention will be described with reference to FIGS. The same components as those in the above-mentioned embodiment are designated by the same reference numerals and the description thereof will be omitted.

A rest 29 is fixed to the bottom of the main body 26 at the rear of the main body 26, and a support 30 is fixed to the boss 31 at the upper rear by means of screws 32.

The support 30 may have a structure in which the claw portion 33 detachably engages with a rear hole of the main body 26, for example, the exhaust hole 25. In this configuration, the rear side of the main body 26 is substantially arcuate toward the lower rear side of the main body 26 when viewed from the side, and a sufficient exhaust area can be secured even when the main body 26 is upright, for example, on a shelf or the like. Even when operating the vacuum cleaner upright when cleaning the place,
There is no load on the electric blower 19 and there is no danger of overheating. Further, exhaust pressure loss is eliminated and suction performance is maintained. In addition, the support tool 30 includes the screw 32 or the claw portion 3.
It is fixed to the upper rear part by means of 3 etc. and can be attached or removed depending on whether the user needs it or not, and it is not an obstacle to remove it during normal use. The size of the support tool 30 can be changed as appropriate,
The size may be selected so that it does not protrude from the outer contour of the main body 26 so as not to impair the mobility as a whole.

[0016]

As is apparent from the above description, according to the present invention, (1) the main body is formed into a substantially hemispherical shape, and the moving wheel is provided substantially at the center of the side surface of the main body. Can be made smaller. Further, while the vacuum cleaner is moving, the rear part of the main body is separated from the floor, and a load is applied only to the moving wheels to facilitate the movement. Further, since it has a substantially hemispherical shape as a whole, it is possible to provide an electric vacuum cleaner with a good operability, which has a structure in which an obstacle can be easily avoided and a normal state can be easily returned even when the vehicle falls over.

(2) Further, a rest portion is provided on the bottom rear portion of the main body,
When the exhaust hole is provided on the rear surface by providing the rear upper part, the main body has a substantially hemispherical shape, so that the exhaust area in the upright state is sufficiently secured and the electric blower overheats even when used in the upright state. Alternatively, a reduction in suction performance due to exhaust pressure loss can be prevented, and a highly safe electric vacuum cleaner can be provided.

[Brief description of drawings]

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

FIG. 2 is a plan view of the electric vacuum cleaner.

FIG. 3 is a side view of an electric vacuum cleaner in which a support member according to another embodiment of the present invention is fixed with screws.

FIG. 4 is a plan view of the electric vacuum cleaner.

FIG. 5 is a side view of the electric vacuum cleaner in which the support of the embodiment is fixed by a claw portion.

FIG. 6 is an external view of a conventional vacuum cleaner.

FIG. 7 is a plan sectional view of the electric vacuum cleaner.

[Explanation of symbols]

 24 Bumper 25 Exhaust Grate 26 Main Body 27 Moving Wheel 28 Moving Caster 29 Rest Part 30 Support Tool 33 Claw Part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masafumi Okamoto 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A cleaner main body having a built-in electric blower and a dust collecting portion, and an intake hole for connecting a dust collecting hose to the upper front and an exhaust hole to the rear, respectively. An electric vacuum cleaner comprising a moving wheel and a moving caster at the rear of the bottom surface of the main body, wherein the cleaner main body has a front bottom surface inclined upward, and the top surface and both side surfaces have a substantially hemispherical shape. 2. The electric vacuum cleaner according to claim 1, wherein a retainer is provided at an upper rear portion and a rest portion is provided at a lower rear portion.