JPH06169867A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To provide a vacuum cleaner having high performance of rotation via the application of a restriction on the positions of a roller, a caster and a connection pipe, and, further provide floor protection or the like via the application of surface treatment to the periphery and external surface of the roller. CONSTITUTION:An electric blower 11 is provided at a rear position within the internal space of a body lower section 10, and a dust collecting chamber 14 is laid at a forward position. A roller 16 is fitted at a position forward of the center of gravity of the blower 11, and a caster 17 capable of free rotation even in a horizontal direction is provided at a position backward of the blower 11. Also, a connection pipe 19 for jointing a hose 18 to an intake hole 2 is laid forward of the chamber 14. In this case, a distance between the rotation center of the roller 16 and the forward end of the pipe 19 is made longer than a distance between the rotation center of the roller 16 and the caster 17. Also, a coat of Teflon or the like is applied to the external surface of the roller 16, or a flock of fiber is electrostatically laid thereon, or a groove is formed on the periphery of the roller 16 in a direction orthogonal with a rotation direction, thereby coping with the transverse motion of the body 10.

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 one disclosed in Japanese Patent Laid-Open No. 58-118726, which is shown in FIG. 6, in which 1 is a main body containing an electric blower 2 and the like, and dust is collected in the front part. Bag 3
A dust collection box 4 having a built-in is detachably fixed, a roller 5 is provided on the rear side surface, and a caster 6 which is rotatable in the horizontal direction is provided on the front bottom surface. A connection pipe 9 attached to an end of a hose 8 is obliquely provided in 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 electric vacuum cleaner, the space required when changing the direction of the main body is determined by the rotation center of the roller 5 and the tip of the connecting pipe 9. Although it is a circle with the radius of rotation as the rotation radius, in order to shorten this distance, it is necessary to downsize the dust collection box 4 or the electric blower 2 to shorten the total length of the main body 1, and to secure the dust collection volume and suction force. It was difficult to do.

Further, when the main body is laterally displaced during the cleaning, the roller 5 slides on the floor surface, causing peeling of the wax on the wooden floor surface and wrinkling of the tatami mat.

Further, the outer surface of the roller 5 may come into contact with furniture or a wall to be damaged or soiled.

The present invention has been made to solve the above-mentioned problems, in which the roller is arranged in front of the electric blower without weakening the dust collecting space of the main body or the suction force, and the roller and the tip of the connecting pipe are placed between the roller and the caster. The purpose of the present invention is to provide an electric vacuum cleaner that can protect the floor and furniture by making the interval longer and by moving the roller surface coating, electrostatic flocking, and adding grooves to the outer peripheral surface so that the floor and furniture can be protected. .

[0007]

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

The second means is that the outer peripheral surface of the roller has a surface coating having a good slippery property with respect to the contacted surface.

The third means is to have fibers such as nylon having electrostatic flocked on the outer peripheral surface and the outer surface of the roller.

The fourth means is to reduce the contact area between the floor surface and the outer peripheral surface of the roller by providing grooves on the outer peripheral surface of the roller at right angles to the rotation direction of the roller.

The fifth means is that the outer peripheral surface of the roller is made to protrude from the outer surface under the main body, and the outer peripheral surface of the roller has a surface coating or electrostatic flocking.

[0012]

According to the first aspect of the present invention having the above-described structure, the radius of gyration 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. Even if an electric blower that occupies 20 to 30% of the load of the main body is placed behind the rotation center of the roller and the roller rotation center and the connection pipe tip are longer than the caster rotation axis and the roller rotation center. As a result, 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 main body suddenly rotates during cleaning and the rotation of the caster cannot follow the rotation speed of the main body. Although the roller moves laterally on the floor surface, the surface of the roller is coated so as to have good slipperiness, so that the floor surface can be prevented from being scratched.

According to the third means, in the case where the outer peripheral surface and the outer surface of the roller have electrostatic flocking made of fibers such as nylon, in addition to the above-mentioned slipperiness with the floor surface, the wall, furniture, etc. Even if the roller is worn on the
There is no such thing as the main body stuck or not moving.

According to the fourth means, by providing a groove on the outer peripheral surface of the roller at a right angle to the direction of rotation of the roller, the contact area between the floor surface and the roller is set in the groove against sliding of the main body in the lateral direction. It is less slippery because it has less friction.

According to the fifth means, even if the roller protrudes from the bottom of 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 is not damaged even if the cleaner body is caught on furniture. Since it is slippery, it does not get stuck.

[0017]

DETAILED 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, an electric blower chamber 12 having an electric blower 11 built therein is provided at a rear inside thereof, a dust collecting chamber 14 having a dust collecting bag 13 built therein is provided at a front thereof, and a lid 15 is provided. The dust collection chamber 14 is rotatably covered from above. The roller 16 is arranged in front of the center of gravity of the electric blower 12, and behind the electric blower 12, there is provided a caster 17 which is horizontally rotatable.

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

The relationship between the distance A from the tip of the connecting pipe 19 fitted in the intake 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 greater than or equal to the distance B.

The second means is the roller 16 of FIG.
2, the roller 16 is rotatably attached to the lower portion 10 of the main body via a rotary shaft 23 in FIG. 2, and a surface coating 24 such as nylon or Teflon is surface-treated on the outer peripheral surface of the roller 16. Has been done.

As for the third means, FIG. 3 shows a cross sectional roll of the roller 16 in FIG. 1. In the figure, the roller 16 is rotatably attached to the lower portion 10 of the main body via the rotary shaft 23 as in the above. The electrostatic flocking 25 made of fibers 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 the grooves 27 evenly around the outer peripheral surface of the roller 26, the contact area at the contact surface c with the floor surface 28 is reduced. ing.

In the fifth means, the roller 16 as shown in FIG. 2 or 3 is projected from the outermost side of the lower body 10.

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, and the roller 1
6 between the roller 6 and the rotary shaft 22 of the caster 17, the distance A between the roller 16 and the tip of the connecting pipe 19 is set to B or more. The rotation radius is defined by the entire length of the roller, whereas the main body can rotate only by the rotation radius of A, and the roller 16 is placed from the center of gravity of the electric blower 11 which accounts for 20 to 30% of the weight of the cleaner. The main body is lightly rotated by disposing the rotation center of (1) at the front and making A longer than B.

In the second means, when the outer peripheral surface of the roller 16 is treated with a slippery surface coating 24 as shown in FIG. 2, when the main body rapidly rotates 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 surface-coated 25 as described above, which may damage the waxed floor surface. There is no such thing.

In the third means, as shown in FIG. 3, in which the electrostatic flocking 25 is provided on the outer circumference and outer surface of the roller 16, for example, even if the side surface of the roller 16 contacts the furniture E, the above-mentioned static The furniture E can be protected by the electro-implanted hair 25, and conversely, the surface of the roller 16 can be slid even when the main body is stuck on furniture or a pillar.

In the fourth means, as shown in FIG. 4, in the case where the groove 26 is provided on the outer circumference of the roller 26, the floor surface 28 is used.
Since the area of the ground contact surface c against the groove 27 is reduced by the groove 27, the frictional force with the floor surface 28 is reduced by the groove 27 even if the main body moves laterally as described in FIG. It is difficult to damage.

In the fifth means, as shown in FIG. 2 or FIG. 3, even if the roller 16 projects from the outer surface of the lower body 10, the surface of the roller 16 is coated or electrostatically planted. It will not slip even if it gets caught on something like that, and it will not damage furniture, and since the roller can be projected from the outer surface of the main body, the width of the main body of the vacuum cleaner can be made narrower and the size and weight can be reduced.

[0029]

As described above, according to the first aspect of the present invention, the rotation center of the roller is provided in front of the center of gravity of the electric feeder, and the roller and the tip of the connecting pipe are arranged between the rotation axis of the roller and the caster. By increasing the space, the radius of rotation and the rotational force are reduced without reducing the dust collection volume or the electric blower.

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

According to the third means, fibers such as nylon are electrostatically flocked on the outer peripheral surface of the roller to protect the furniture and the wall from scratches in addition to the above-mentioned lateral movement and to protect the pillar or the furniture from the main body. It will not get stuck.

According to the fourth means, in the case where the outer peripheral surface of the roller is uniformly provided with grooves, the frictional force at the time of 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 below the main body, it will not damage the furniture while slipping when it gets caught on furniture, etc. By making it protrude from the side surface, the width of the main body can be made narrower and the size and weight can be reduced.

[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 sectional view of a roller showing an embodiment of the present invention.

FIG. 3 is a sectional view of a roller showing an embodiment of the present invention.

FIG. 4 is a sectional view of a roller showing an embodiment of the present invention.

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

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

[Explanation of symbols]

 10 Lower Body 11 Electric Blower 12 Electric Blower Chamber 13 Dust Collection Bag 14 Dust Collection Chamber 15 Lid 16 Roller 17 Caster 19 Connection Pipe 20 Air Intake 22 Rotating Shaft 24 Surface Coating 25 Electrostatic Flocking 27 Groove

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

Claims (5)

[Claims] 1. An electric blower chamber in which an electric blower is arranged in a rear portion, a dust collecting chamber in which a dust bag for collecting dust is arranged is formed in a front portion, and an intake hole is provided in front of the dust collecting chamber. Under the body,
A lid that covers the dust collection chamber is arranged so that it can be opened and closed from above, and a roller that has its rotation center located in front of the center of gravity of the electric blower that is placed under the main body and can rotate horizontally under the main body behind the roller. A caster is arranged, and a connection pipe that fits with the intake hole is arranged in the front of the main body, and the distance from the tip of the connection pipe to the roller rotation center is greater than the distance between the rotation axis of the caster and the roller rotation center. Vacuum cleaner with the above structure. 2. The electric vacuum cleaner according to claim 1, wherein an outer peripheral surface of the roller has a surface coating having a good slippery property with respect to a contacted surface. 3. The electric vacuum cleaner according to claim 1, wherein electrostatic flocking made of fibers such as nylon is provided on an outer peripheral surface and an outer surface of the roller. 4. The electric vacuum cleaner according to claim 1, wherein a groove is provided on an outer peripheral surface of the roller at a right angle to a rotation direction of the roller to reduce a contact area between the floor surface and the outer peripheral surface of the roller. 5. The electric vacuum cleaner according to claim 1, wherein an outer peripheral surface of a roller rotatably arranged under the main body is protruded from a lower outer surface of the main body, and the outer peripheral surface of the roller has a surface coating or electrostatic flocking.