JP2009056218A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a convenient vacuum cleaner with reduced workload which is well balanced while it is moving or turning the direction and with a main body that can be pulled easily while preventing the main body from tumbling. <P>SOLUTION: The bottom surface of a vacuum cleaner body 1 is formed into an approximately round shape and is provided with three moving casters on approximately the same circle on the bottom surface. A dirt collecting chamber 2 and an electric blower 3 are disposed above one moving caster and two moving casters among the three moving casters, respectively. The weight of the vacuum cleaner body 1 is well balanced since the weight of the vacuum cleaner body 1 is distributed approximately evenly on three moving casters 11 and the vacuum cleaner body 1 is well balanced while it is moving or turning the direction to prevent the vacuum cleaner body 1 from tumbling while reducing the moving/pulling force of the vacuum cleaner and improving convenience with reduced workload. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner having traveling means in a cleaner body.

  A conventional vacuum cleaner will be described with reference to FIG.

The conventional electric vacuum cleaner is configured such that a user moves the main body by means of a rotatable traveling caster 31 provided at the front bottom of the vacuum cleaner main body 30 and a rear traveling roller 32, 33 is a hose, and 34 is an extension. The pipe 35 is a suction nozzle, and the dust sucked by the suction nozzle 35 is collected in the dust collection chamber of the vacuum cleaner body 30 via the extension pipe 34 and the hose 33 (for example, Patent Document 1). reference).
JP-A-63-49118

  However, in the above configuration, a vacuum cleaner using a traveling caster 31 at the front of the main body 30 and a traveling roller 32 at the rear is mainly used, but the main body 30 is left stationary, although straightness and a certain degree of direction change are ensured. When the main body 30 hits a corner of a furniture such as turning around or suddenly changes the direction of the main body 30, the rear running roller 32 slides sideways and damages the floor surface, or the operation is very heavy due to resistance. When pulled, the balance is lost and the main body 30 rolls over.

  An object of the present invention is to solve the above-mentioned problems, and to provide an easy-to-use vacuum cleaner that is easy to use for light labor that can be easily routed while the main body is prevented from overturning and has a good balance when traveling or turning. To do.

  In order to solve the above-described conventional problems, the present invention provides a vacuum cleaner main body having a substantially circular bottom surface having a dust collection chamber disposed on the upstream side and an electric blower disposed on the downstream side. Three traveling casters are provided on substantially the same circumference so that a line connecting the centers thereof is a substantially isosceles triangle and the circumference center of the substantially the same circumference is located inside the substantially isosceles triangle, A dust collecting chamber is disposed above the traveling caster whose center forms the apex of the approximately isosceles triangle, and the three traveling casters have their traveling direction rotatable 360 degrees. Because the electric blower is supported by two traveling casters, the weight of the main body is distributed almost evenly to the three traveling casters, the weight balance is good, and the straight running stability during traveling is improved. , Well-balanced direction change Withered, in which can allow routed in fall prevention and a small force of the body.

  The vacuum cleaner of the present invention has a good weight balance of the main body, a good balance at the time of traveling and direction change, can prevent the main body from overturning, and can easily draw the main body, thereby improving usability with light labor.

  1st invention makes the bottom face of the vacuum cleaner main body which has the dust collection room arranged in the upstream side, and the electric blower arranged in the downstream side into a substantially circular shape, on substantially the same circumference of the bottom surface, Three traveling casters are provided so that the line connecting the centers is an isosceles triangle and the circumference center of the substantially identical circumference is located inside the approximately isosceles triangle. A dust collection chamber is disposed above the traveling caster that forms the apex of the triangle, and the three traveling casters are configured so that the traveling direction of the traveling caster is freely rotatable by 360 degrees. Because it is supported by one traveling caster, the body weight is distributed almost evenly on the three traveling casters, the weight balance is good, the balance during traveling is very good, the straight running stability is improved, Change direction well balanced For example, one in which an electric vacuum cleaner that made it possible to route with anti-tip and a small force of the body can provide.

  According to a second aspect of the present invention, the bottom surface of the vacuum cleaner body having a dust collection chamber disposed on the upstream side and an electric blower disposed on the downstream side is substantially circular, and on substantially the same circumference of the bottom surface, Three traveling casters are provided so that the line connecting the centers is an isosceles triangle and the circumference center of the substantially identical circumference is located inside the approximately isosceles triangle. A dust collection chamber and a hose connection portion are disposed above the traveling caster that forms the apex of the triangle, and the three traveling casters have a traveling direction that is freely rotatable by 360 degrees, and are heavy objects. Since the electric blower is supported by two traveling casters, the weight of the main body is distributed almost evenly on the three traveling casters, the weight balance is good, the straight running stability during traveling is improved, and the direction change is also possible Be balanced, It is intended that enables routed in fall prevention and a small force of the body. Also, by supporting the dust collection chamber with the hose connection part in front of the main body with one traveling caster in the traveling direction of the main body, it is possible to go straight to one traveling caster in the front and to change direction mainly. The stability and direction change can be further improved, and the main body can be drawn with very light force.

  3rd invention makes the substantially circular center of the bottom face of the vacuum cleaner main body of 1st or 2nd invention, and the circumference center in which the three traveling casters were provided on the substantially same circumference with the same. Thus, the weight balance of the main body applied to the three traveling casters is further improved, and it is possible to prevent the main body from falling and to be drawn with a light force.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
A first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is an overall side view of the electric vacuum cleaner according to the first embodiment. In FIG. 1 to FIG. 3, reference numeral 1 denotes an electric blower 3 that generates suction air in a vacuum cleaner main body (hereinafter referred to as “main body”) having a substantially circular shape, and an upstream side of the suction air of the electric blower 3. A dust collection chamber 2 for storing paper bags and the like is provided. The dust collection chamber 2 has a hose connection portion 4 to which a hose 5 is connected, and the hose connection portion 4 forms a passage for suction air flowing to the hose 5, the dust collection chamber 2, and the electric blower 3. 1, the user pulls the hose 5, so that the main body 1 travels.

  Further, three traveling casters 11 are arranged on substantially the same circumference on the outer periphery of the bottom surface of the main body 1, and a line connecting the centers of the three traveling casters forms a substantially isosceles triangle, A circumferential center of substantially the same circumference is located inside the isosceles triangle, and a substantially circular center of the bottom surface of the main body 1 and a circumferential center of three traveling casters provided on the substantially identical circumference. It is comprised so that it may become the same.

  Further, among the three traveling casters 11, a part of the dust collecting chamber 2 having the hose connecting portion 4 is disposed directly above the traveling caster 11 that forms the apex of a substantially isosceles triangle, and the remaining two The traveling casters 11 are arranged on the left and right of the rear portion of the main body 1 below the electric blower 3. The traveling caster 11 is rotatably installed by the bearing 14 so that the traveling direction of the roller 8 is directed in any direction of 360 degrees. Reference numeral 15 denotes a cover body of the traveling caster 11 that covers the holding portion 12 and the roller 8 of the traveling caster 11 so that the exposed dimension of the roller 8 to the outside in the radial direction is 2 mm or less. Further, the roller shaft 7 portion of the traveling caster 11 has a metal bearing 13.

  About the vacuum cleaner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  Even when the main body 1 is left on the floor surface while being cleaned, or when the main body 1 hits a corner of furniture or the like and suddenly changes the orientation of the main body 1, a circular shape is formed on the bottom surface of the substantially circular main body 1. The three traveling casters 11 are provided, the dust collecting chamber 2 is disposed substantially at the upper part of the one traveling caster 11, and the electric blower 3 is disposed substantially at the upper part of the remaining two traveling casters 11. Since the electric blower 3 is supported by the two traveling casters 11, the weight of the main body is distributed almost evenly on the three traveling casters 11, the weight balance is good, the balance during traveling is very good, and straight running is stable. In addition to improving the performance, the direction can be changed in a well-balanced manner so that the main body 1 can be prevented from falling and can be drawn with a light force.

  Further, by making the substantially circular center of the bottom surface of the main body 1 substantially the same as the circumferential center of the three traveling casters 11 provided in a circumferential shape, the weight balance of the main body applied to the three traveling casters 11 is further increased. Is improved, and the body 1 can be prevented from falling and can be drawn with a light force.

  Further, in the present embodiment, the dust collecting chamber 2 having the connecting pipe portion 4 in front of the main body 1 is supported by the single traveling caster 11 in the traveling direction of the main body 1, so that one traveling caster 11 in the front is provided. It is possible to further improve the straight running stability and the direction changeability by allowing the main body 1 to be routed with a very light force.

  In addition, the cover 15 that covers the holding portion 12 and the roller 8 of the traveling caster 11 is configured such that the exposed dimension of the roller 8 to the outside in the radial direction is 2 mm or less. This prevents the cord 16 from being caught on an obstacle, climbs over a step, improves slip-through property, and allows the body to be drawn with a light force. The dimension of exposure to the outside in the radial direction of the roller 8 is 2 mm or less, that is, the exposure of the rotating body is the minimum necessary, and obstacles such as the power cord 16 are placed on the inclined surface of the cover body 15. Even if it moves along and hits the roller 8 that is a rotating body, the exposed size to the outside of the roller 8 is a minimum of 2 mm or less, so it easily gets over without being caught.

  Further, since the three traveling casters 11 are arranged on the circumference of the bottom surface of the main body 1, the traveling casters 11 in contact with the floor surface are supported on the floor 1 by supporting the main body 1 at three circumferential minimum points. The contact resistance can be minimized, and it is possible to draw with a light force.

  Further, since the bearing 14 and the bearing 13 of the traveling caster 11 are made of metal bearings, the rotational resistance of the bearing portion of the traveling caster 11 is reduced, and the rotational performance and the rotational performance are improved. It is possible. Needless to say, ball bearings and the like are not limited to metal bearings.

  A dust collecting chamber having a hose connection portion is disposed in a semicircle on the upstream side of the intake air when the main body 1 having a substantially circular bottom surface is viewed from the bottom surface side, and an electric blower is disposed in the semicircle on the downstream side of the intake air. If it is provided, the weight balance of the main body 1 is further improved, the balance during traveling is improved, the straight running stability is further improved, and the direction change can be performed with a better balance.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIG. Note that the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In FIG. 4, the holding part 12 of the traveling caster 11 composed of the roller 8 and the holding part 12 also serves as the cover body 25 of the traveling caster 11, thereby eliminating the need to separately provide a cover body 15 for the traveling caster 11. The number of parts can be reduced.

  As described above, the vacuum cleaner according to the present invention has a good weight balance of the main body, maintains the main body balance at the time of traveling and turning, prevents the main body from falling, and can easily draw the main body at home, Can be widely applied to commercial vacuum cleaners.

Whole side view of the electric vacuum cleaner which shows Embodiment 1 of this invention The bottom view of the vacuum cleaner (A) Side view around the traveling caster section showing the state of getting over the power cord (b) Bottom view around the traveling caster section (A) Side view around the traveling caster part showing a state where the power cord is crossed over according to the second embodiment of the present invention (b) Bottom view around the traveling caster part Schematic configuration diagram of a conventional vacuum cleaner

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 2 Dust collection chamber 3 Electric blower 4 Hose connection part 5 Hose 11 Traveling caster 12 Holding part 13 Bearing (rotating part)
14 Bearing (roller shaft)
15 Cover body

Claims (3)

The bottom surface of the vacuum cleaner body having a dust collection chamber disposed on the upstream side and an electric blower disposed on the downstream side is substantially circular, and lines connecting the centers thereof on substantially the same circumference of the bottom surface Is provided with three traveling casters so that the center of the circumference of the substantially isosceles triangle is located inside the substantially isosceles triangle, and the center constitutes the apex of the approximately isosceles triangle. A vacuum cleaner in which a dust collecting chamber is disposed above the traveling caster and the three traveling casters are capable of rotating 360 degrees freely. The bottom surface of the vacuum cleaner body having a dust collection chamber disposed on the upstream side and an electric blower disposed on the downstream side is substantially circular, and lines connecting the centers thereof on substantially the same circumference of the bottom surface Is provided with three traveling casters so that the center of the circumference of the substantially isosceles triangle is located inside the substantially isosceles triangle, and the center constitutes the apex of the approximately isosceles triangle. A vacuum cleaner in which a dust collecting chamber and a hose connecting portion are disposed above the traveling caster, and the traveling traveling of the three traveling casters is freely rotatable by 360 degrees. The electric vacuum cleaner according to claim 1 or 2, wherein the substantially circular center of the bottom surface of the main body of the electric vacuum cleaner and the circumferential center where the three traveling casters are provided on substantially the same circumference are the same.

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