JP3146701B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a general household vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, there is a device disclosed in Japanese Patent Application Laid-Open No. 58-118726, which is shown in FIG. Bag 3
A dust collecting box 4 having a built-in roller is detachably fixed, and a roller 5 is provided on a rear side surface, and a caster 6 rotatable in a horizontal direction is provided on a front bottom surface. A connection pipe 9 attached to an end of a hose 8 is provided obliquely at an intake hole 7 provided in front of the dust collection box 4, and an extension pipe and a floor nozzle are provided at the other end of the hose 8.

[0003]

However, in the above-described vacuum cleaner, the space required for changing the direction of the main body is A, which is determined by the rotation center of the roller 5 and the tip of the connection pipe 9. However, in order to shorten this distance, it is necessary to reduce the size of the dust collecting box 4 or the electric blower 2 to shorten the entire length of the main body 1, and to secure the dust collecting volume and the suction force. Was difficult to do.

Further, when the main body is shifted in the horizontal direction during the cleaning, the roller 5 slides on the floor surface, so that the wax on the wooden floor surface or the tatami mats are scattered.

Further, the outer surface of the roller 5 may be damaged or stained by contacting furniture or walls.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and arranges a roller in front of an electric blower without weakening a dust collecting space and a suction force of a main body, and furthermore, a roller and a connecting pipe tip from between a roller and a caster. It is an object of the present invention to provide a vacuum cleaner that is easy to move by processing the surface coating of a roller, electrostatic flocking, and adding a groove to an outer peripheral surface, and that can protect floors and furniture. .

[0007]

In order to achieve the above object, a first means of the present invention is to provide a rotation center of a roller ahead of an electric blower built in a main body and to extend a distance from a roller rotation center to a caster. The distance from the center of rotation of the roller to the tip of the hose connection side of the hose connection pipe is longer than the distance of.

The second means has a surface coating on the outer peripheral surface of the roller with good slipperiness on the contact surface.

A third means is to have a roller such as nylon having electrostatic flocking on the outer peripheral surface and outer surface of the roller.

A fourth means is to provide a groove on the outer peripheral surface of the roller at right angles to the rotation direction of the roller to reduce the contact area between the floor surface and the outer peripheral surface of the roller.

A fifth means is that the outer peripheral surface of the roller is protruded from the outer surface below the main body, and the outer peripheral surface of the roller has surface coating or electrostatic flocking.

[0012]

According to the first aspect of the present invention, the rotation radius of the main body can be reduced without reducing the dust collecting space for collecting dust and the space for accommodating the electric blower for securing the suction force. And the distance between the roller rotation center and the connection pipe tip is longer than the distance between the caster and the roller rotation center even if an electric blower that occupies 20 to 30% of the body load behind the roller rotation center is arranged. Thus, when the hose is pulled, the point of action of the connecting pipe is longer than the center of rotation, so that the hose can be rotated lightly.

According to the second means, in the case where the outer peripheral surface of the roller is treated with a surface coating such as Teflon, when the rotation of the caster cannot follow the rotation speed of the main body when the main body suddenly rotates during cleaning. The roller moves laterally on the floor, but the surface is coated with good slipperiness so that the floor can be prevented from being damaged.

According to the third means, in a roller having an electrostatic flocking made of fiber such as nylon on the outer peripheral surface and the outer surface of the roller, in addition to the above-described slipperiness with the floor surface, a wall, furniture, etc. Even when the roller is worn, it does not hurt,
There is no thing that the main body gets stuck and does not move.

According to the fourth means, by providing a groove on the outer peripheral surface of the roller at right angles to the rotation direction of the roller, the contact area between the floor surface and the roller against the lateral sliding of the main body is formed in the groove. The frictional force is reduced due to the decrease, and it is slippery.

According to the fifth means, even if the roller protrudes from under the main body, the outer peripheral surface of the roller is treated by surface coating or electrostatic flocking so that the outer peripheral surface of the roller can be stuck even on furniture or the like. It is slippery and does not get stuck.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The first means of the present invention will be described below with reference to the accompanying drawings. 1 to 5, reference numeral 10 denotes a lower part of the main body, which has an electric blower chamber 12 having a built-in electric blower 11 at the rear inside, a dust collecting chamber 14 having a dust collecting bag 13 built in the front, and a lid 15. Thereby, the dust collection chamber 14 is rotatably covered from above. The roller 16 is disposed in front of the center of gravity of the electric blower 12, and a caster 17 that is horizontally rotatable is provided behind the electric blower 12.

At the front of the dust collecting chamber 14, there is provided an air inlet 20 for communicating the dust collecting bag 13 disposed in the dust collecting chamber 14 with the connecting pipe 19 provided at the end of the hose 18.
The extension pipe communicates with the floor nozzle through the nozzle 8.

The relationship between the distance A from the tip of the connection pipe 19 fitted into the suction hole 20 to the rotation center of the roller 16 and the distance B from the rotation shaft 22 of the caster 17 to the rotation center of the roller 16 is as follows. The distance A is set to be longer than the distance B.

As for the second means, the roller 16 shown in FIG.
In FIG. 2, the roller 16 is rotatably attached to the lower part of the main body 10 via a rotating shaft 23, and a surface coating 24 such as nylon and Teflon is provided on the outer peripheral surface of the roller 16 in FIG. Have been.

As for the third means, FIG. 3 shows a cross section of the roller 16 shown in FIG. 1. In FIG. 3, the roller 16 is rotatably mounted on the lower part 10 of the main body 10 via a rotary shaft 23 as described above. In addition, an electrostatic flocking 25 made of a fiber such as nylon is surface-treated on the outer peripheral surface and the outer surface of the roller 16.

As for the fourth means, as shown in FIG. 4, by arranging grooves 27 uniformly on the outer peripheral surface of the roller 26 over the entire circumference, the contact area at the contact surface C with the floor surface 28 is reduced. ing.

The fifth means is such that a roller 16 as shown in FIG. 2 or FIG.

Next, the operation of this embodiment will be described. As shown in FIG. 1, in the first means, the rotation center of the roller 16 is provided in front of the center of gravity of the electric blower 11,
By setting the distance A between the roller 16 and the distal end of the connecting pipe 19 to B or more with respect to the distance B between the rotating shaft 6 of the caster 17 and the rotating shaft 22 of the caster 17, the cleaner provided with the roller at the rear of the main body can move from the roller to the hose connecting pipe. The rotation radius is defined by the entire length of the cleaner, while the main body can be rotated only by the rotation radius of A. Also, the roller 16 is moved from the center of gravity of the electric blower 11 occupying 20 to 30% of the weight of the cleaner. The main body is rotated lightly by disposing the center of rotation of A at the front and making A longer than B.

In the second means, the outer peripheral surface of the roller 16 is treated with a surface coating 24 having good slipperiness as shown in FIG. 2 so that the main body is rapidly rotated in the direction of arrow C as shown in FIG. Even if the roller 16 that cannot follow the rotation of the main body rotates in the direction of the arrow D, the outer surface of the roller 16 is coated with the surface 25 as described above, so that the waxed floor may be damaged. Not something.

In the third means, as shown in FIG. 3, in the case where the electrostatic flocking 25 is provided on the outer circumference and the outer side surface of the roller 16, for example, even if the side surface of the roller 16 comes into contact with the furniture E, the above-mentioned static Furniture E can be protected by electro-implantation 25. Conversely, the surface of the roller 16 can slide and move even if the main body hangs on furniture or a pillar.

In the fourth means, as shown in FIG. 4, when a groove 27 is provided on the outer periphery of a roller 26, a floor surface 28 is provided.
5, the frictional force with the floor surface 28 is reduced by the groove 27 even if the main body moves in the lateral direction, as described with reference to FIG. It is hard to hurt.

In the fifth means, as shown in FIG. 2 or FIG. 3, even if the roller 16 protrudes from the outer surface of the lower part 10 of the main body, the roller 16 is furnished with surface coating or electrostatic flocking. The roller does not slip off and does not damage furniture even if it gets caught on the body. In addition, since the roller can protrude from the outer surface of the main body, the width of the main body of the vacuum cleaner can be reduced, and the cleaner can be reduced in size and weight.

[0029]

As described above, according to the first aspect of the present invention, according to the first means, the center of rotation of the roller is provided in front of the center of gravity of the electric sending machine, and the hose connection side of the roller and the connection pipe is located between the roller and the caster. By increasing the distance between the tips, the rotating radius is reduced and the rotating force is reduced without reducing the dust collection volume or the electric blower.

According to the second means, by treating the outer peripheral surface of the roller with a surface coating such as nylon having excellent slipperiness, the floor surface is not damaged even when the cleaner is moved laterally.

According to the third means, in addition to the above-mentioned lateral movement, damage to furniture and walls can be protected by electrostatically implanting fibers such as nylon on the outer peripheral surface of the roller, and the body of the pillar or furniture can be protected. It is something that will be stuck.

According to the fourth means, in the case where the grooves are uniformly provided on the outer peripheral surface of the roller, the frictional force at the time of the lateral movement can be reduced while being made of the same material. According to the fifth means, even if the outer peripheral surface of the roller protrudes from the outer surface under the main body, it does not hurt the furniture when it gets caught on furniture, etc. By protruding from the side, the width of the main body can be reduced, and the size and weight can be measured.

[Brief description of the drawings]

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

FIG. 2 is a cross-sectional view of a roller showing one embodiment of the present invention.

FIG. 3 is a cross-sectional view of a roller showing one embodiment of the present invention.

FIG. 4 is a cross-sectional view of a roller showing one embodiment of the present invention.

FIG. 5 is a plan view of a vacuum cleaner showing one embodiment of the present invention.

FIG. 6 is a side view of a vacuum cleaner showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Lower body 11 Electric blower 12 Electric blower room 13 Dust collection bag 14 Dust collection room 15 Lid 16 Roller 17 Caster 19 Connection pipe 20 Intake hole 22 Rotation axis 24 Surface coating 25 Electrostatic flocking 27 Groove

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor: Yukiyuki Ueno 1006, Kazuma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-61-280825 (JP, A) JP-A-61- 280824 (JP, A) Jikken 38-15317 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47L 5/00, 9/00, 9/24

Claims (5)

(57) [Claims] 1. An electric blower chamber having an electric blower disposed at a rear portion, a dust collecting chamber having a dust collecting bag disposed at a front portion disposed therein for collecting dust, and an intake hole provided in front of the dust collecting chamber. and the body, together with placing the lid that covers the dust collection chamber, before placing the center of rotation than the front center of gravity of the electric blower being placed within said body
A roller running rearward and a caster arranged only behind the roller , a connection pipe fitted with the air intake hole is arranged in front of the main body, and the roller is rotated from the hose connection end of the connection pipe. An electric vacuum cleaner having a configuration in which a distance to a center is larger than a distance between the caster and a roller rotation center. 2. The vacuum cleaner according to claim 1, wherein the outer peripheral surface of the roller is provided with a surface coating having a good sliding property on a contact surface. 3. The vacuum cleaner according to claim 1, wherein the roller has electrostatic flocking made of a fiber such as nylon on the outer peripheral surface and the outer peripheral surface. 4. The vacuum cleaner according to claim 1, wherein a groove is formed on the outer peripheral surface of the roller at right angles to the rotation direction of the roller to reduce the contact area between the floor surface and the outer peripheral surface of the roller. 5. The outer peripheral surface of the B Ra is projected from the main body under the outer surface, the vacuum cleaner according to claim 1, wherein having a surface coating or electrostatic flocking on the roller peripheral surface.