JP2001309874A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a user-friendly vacuum cleaner which hardly falls down when stopped or veered suddenly. SOLUTION: A main body 1 of a vacuum cleaner has wheels 2 in the rear. A cover 3 for a caster is attached to the front part of the bottom of the main body 1 by a shaft, while rotating, and a roller 4 for a caster is placed to the cover 3 for the caster. An assisting roller 6 is attached to a position across the rotating shaft of the cover 3 for the caster from the roller 4 for the caster, maintaining a gap from the floor. Because of the wide width of the assisting roller 6, the main body 1 hardly falls down in an ongoing direction or sideways, when stopped or veered suddenly. As a result, the vacuum cleaner becomes user-friendly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art A conventional vacuum cleaner is generally shown in FIG. 6, and will be described below with reference to the drawings.

The cleaner body 1 has wheels 2 at the rear and a caster cover 3 rotatably supported at the front of the bottom surface of the body 1. A caster roller 4 is attached to the caster cover 3, and a caster cover 3 is provided. A protection roller 5 is attached at a position opposite to the caster roller 4 with respect to the center of the rotation axis 3 with a gap from the floor surface.

[0004]

In such a conventional vacuum cleaner, when the cleaner is suddenly stopped in the traveling direction when the cleaner is moved, the protection roller can prevent the main body from falling forward. However, there is a problem that the main body is liable to fall in the horizontal direction when the direction is changed.

An object of the present invention is to solve the above-mentioned problems, and to provide an electric vacuum cleaner which is easy to use even when it is suddenly stopped or suddenly changed direction when moving while using the vacuum cleaner. With the goal.

[0006]

In order to achieve the above object, the present invention provides a caster cover rotatably mounted on a bottom surface of a cleaner body, a caster roller mounted on the caster cover, and a caster cover. A caster body consisting of an auxiliary roller attached to the floor surface with a gap provided between the caster roller and the caster roller at a position opposite to the caster roller with respect to the rotation axis center of the caster roller. The width of the auxiliary roller is wide even if you suddenly stop or change direction suddenly, so the main unit falls down not only in the traveling direction but also in the horizontal direction. It is difficult to use and good usability can be achieved.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION
A caster cover rotatably mounted on the bottom surface of the cleaner body, a caster roller mounted on the caster cover, and a floor surface at a position opposite to the caster roller with respect to the center of rotation of the caster cover. A vacuum cleaner characterized by arranging a caster body including an auxiliary roller attached with a gap therebetween and making the width of the auxiliary roller wider than the width of the caster roller. Because the width of the auxiliary roller is wide even if you change the direction,
The main body is unlikely to fall down in the horizontal direction, and the usability can be improved.

According to a second aspect of the present invention, since the auxiliary roller is formed as a hollow body by an elastic body, the auxiliary roller is grounded to the floor. At the time, the cushioning property is good and sound is hardly generated, and the floor surface can be prevented from being damaged.

According to a third aspect of the present invention, a top surface side of a caster cover which holds a rotating shaft of a cleaner body and slides on a bottom surface perpendicular to the rotating shaft is moved from a caster roller side to an auxiliary roller side. Since the vacuum cleaner according to claim 1 or 2 is inclined toward the floor surface toward
Even if the caster cover and the rotating shaft are loose due to dimensional variation of the rotating shaft during molding, the auxiliary roller is regulated in the direction away from the floor during normal running, and the auxiliary roller is unnecessarily placed on the floor. Contact is reduced, and contact resistance with the floor surface can be reduced.

According to a fourth aspect of the present invention, the brushed cloth is provided on the bottom surface of the cleaner body and on both sides of the caster cover. Since the vacuum cleaner is used, even when the bottom surface of the main body is in contact with the floor surface, the brushed cloth can prevent the floor surface from being damaged, and since it has good sliding properties, it can be prevented from sticking on the floor surface.

The invention according to claim 5 of the present invention is characterized in that the bottom of the cleaner body and both sides of the caster cover protrude with a gap from the floor.
Since the electric vacuum cleaner according to any one of the above-described items 4 to 4, it is possible to prevent the body from falling down even when the main body cannot be prevented by the auxiliary roller alone.

[0012]

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 1, a cleaner main body 1 (hereinafter referred to as a main body) has wheels 2 at a rear portion thereof, and a caster cover 3 is rotatably supported at a front portion of a bottom surface of the main body 1, and a caster cover is provided. A caster roller 4 is attached to 3, and an auxiliary roller 6 is attached at a position opposite to the caster roller 4 with respect to the center of the rotation axis of the caster cover 3 with a gap from the floor surface.
As shown in FIGS. 2 and 3, the auxiliary roller 6 is wider than the caster roller 4 and is hollow with an elastic body (hollow portion 6 a).
Is formed. As shown in FIG. 4, the top surface of the caster cover 3 that holds the rotating shaft 1 a of the main body 1 and slides on the bottom surface orthogonal to the rotating shaft 1 a faces from the caster roller 4 to the auxiliary roller 6. To the floor side (inclined portion 3a). Also, as in the other embodiment shown in FIG. 5, both sides of the caster cover 3 on the bottom of the main body are
It protrudes with a gap from the floor surface, and a raised cloth 8 is attached to the floor side of the protruding portion 7.

The operation of the above configuration is as follows.

The width of the auxiliary roller 6 is wide even when the vehicle is suddenly stopped or the direction is suddenly changed, so that the main body 1 hardly falls down not only in the traveling direction but also in the lateral direction, thereby improving the usability. Further, since the auxiliary roller 6 is made of an elastic material and formed hollow (hollow portion 6a), even when the auxiliary roller 6 is in contact with the floor surface, it has good cushioning properties, does not easily generate sound, and can prevent the floor surface from being damaged. In addition, since the plane on the top surface side of the caster cover 3 that slides on the bottom surface orthogonal to the rotation axis 1a is inclined toward the floor surface from the caster roller 4 side to the auxiliary roller 6 side (inclined portion 3a), Even if the caster cover 3 and the rotating shaft 1a are loose due to dimensional variations of the rotating shaft 1a during molding, the auxiliary roller 6 is regulated in a direction away from the floor during normal running, and the auxiliary roller 6
Is less likely to contact the floor surface than necessary, and the contact resistance with the floor surface can be reduced. Furthermore, as in the other embodiment shown in FIG. 5, both sides of the caster cover 3 on the bottom surface of the main body project with a gap from the floor, so that the main body 1 cannot be prevented by the auxiliary roller 6 alone. Even if the bottom surface of the main body 1 is in contact with the floor surface, the brushed cloth 8 can prevent the floor surface from being scratched even when the main body 1 is in contact with the floor surface. Can be prevented.

[0016]

According to the first aspect of the present invention,
A caster cover rotatably mounted on the bottom surface of the cleaner body, a caster roller mounted on the caster cover, and a floor surface at a position opposite to the caster roller with respect to the center of rotation of the caster cover. A vacuum cleaner characterized by arranging a caster body including an auxiliary roller attached with a gap therebetween and making the width of the auxiliary roller wider than the width of the caster roller. Because the width of the auxiliary roller is wide even if you change the direction,
The main body is unlikely to fall down in the horizontal direction, and the usability can be improved.

According to the invention of claim 2 of the present invention, the auxiliary roller is formed as a hollow member by using an elastic body, so that the vacuum cleaner according to claim 1 has the auxiliary roller on the floor. When it is grounded, it has good cushioning properties and is less likely to generate sound, and can prevent floor damage.

According to the third aspect of the present invention, the top surface of the caster cover that holds the rotating shaft of the cleaner body and slides on the bottom surface perpendicular to the rotating shaft is assisted from the caster roller side. The vacuum cleaner according to claim 1 or 2, wherein the vacuum cleaner is inclined toward the floor surface toward the roller side, so that the caster cover and the rotating shaft generate backlash due to dimensional variation of the rotating shaft during molding. However, during normal running, the auxiliary roller is regulated in a direction away from the floor, so that the auxiliary roller does not contact the floor more than necessary, and the contact resistance with the floor can be reduced.

According to the invention of claim 4 of the present invention, a raised cloth is provided on the bottom surface of the cleaner body and on both sides of the caster cover.
Since the vacuum cleaner described in the item is used, even when the bottom surface of the main body is grounded to the floor, it is possible to prevent the floor surface from being damaged by the brushed cloth, and to prevent the floor from sticking due to its good slipperiness.

According to the invention of claim 5 of the present invention, the bottom surface of the cleaner body and both sides of the caster cover protrude with a gap from the floor surface. Since the vacuum cleaner according to any one of the items 4 is used, it is possible to prevent the body from falling down even when the main body cannot be prevented by the auxiliary roller alone.

[Brief description of the drawings]

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

FIG. 2 is a partial bottom view of the vacuum cleaner.

FIG. 3 is a sectional view of the auxiliary roller.

FIG. 4 is a side view of the caster body.

FIG. 5 is a front view of a vacuum cleaner showing another embodiment.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 2 Wheel 3 Caster cover 4 Caster roller 6 Auxiliary roller

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Masakazu Onda 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Yasufumi Fujiwara 1006 Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Tetsuji 1006 Kadoma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 3B006 JA02 JA04 JA05

Claims (5)

[Claims] A caster cover rotatably attached to a bottom surface of the cleaner body; a caster roller attached to the caster cover; and a caster roller opposite to the caster roller with respect to a rotation axis center of the caster cover. A vacuum cleaner, wherein a caster body including an auxiliary roller attached to a floor surface with a gap is disposed at a position, and a width of the auxiliary roller is wider than a width of the caster roller. 2. The vacuum cleaner according to claim 1, wherein the auxiliary roller is formed by an elastic body so as to be hollow. 3. A caster cover holding a rotating shaft of the cleaner body and a top surface side of a caster cover that slides on a bottom surface perpendicular to the rotating shaft is inclined toward a floor surface from a caster roller to an auxiliary roller. The vacuum cleaner according to claim 1 or 2, wherein the vacuum cleaner is a vacuum cleaner. 4. A brushed cloth is provided on the bottom surface of the cleaner body and on both sides of the caster cover.
The vacuum cleaner according to any one of claims 3 to 3. 5. The vacuum cleaner according to claim 1, wherein a bottom surface of the cleaner body and both sides of the caster cover project with a gap from the floor surface. .