JPH0557842B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a vacuum cleaner used in general households.

Prior Art The structure of a conventional vacuum cleaner is shown in FIGS. 7 to 10.

1 is a vacuum cleaner main body (hereinafter referred to as the main body), and a fan motor 2 is built therein. Further, a dust collection chamber 3 is provided in front of the fan motor 2, and a paper bag 4 for overuse is attached thereto. This dust collection chamber 3 has a lid 5
The upper part of the fan motor 2 is closed by a main body cover 6. 7 is a handle provided in front of the main body 1, and below it is an intake port 10 into which a hose 8 is inserted via a hose insertion tool 9.
is provided. Further, a roller 11 is provided at the lower rear of the main body 1, and a caster roller 12 which can rotate 360° is provided at the lower front of the main body 1, so that the main body 1 can be moved. here 13
is the center of gravity when all parts of the main body 1 are included.

Problems to be Solved by the Invention However, with such a structure, when the main body 1 is rotated by pulling the hose 8 as shown in FIG. It rotates using the distance R to the tip of the inlet 9 as a radius. Here, this R is longer than the main body 1, so even if the main body 1 is designed small, the hose 8
The radius of rotation of the main body 1 when it is swung becomes very large. Therefore, when used at home, the device often bumps into furniture, etc., resulting in damage to the furniture.

In addition, when cleaning narrow spaces, the main body 1 is tilted to reduce the rotation radius to improve rotation, or when cleaning upper areas such as shelves, use the hose as shown in Figure 9. 8 is pulled upward to tilt the main body 1, but since the center of gravity 13 of the main body 1 is in front of the rollers 11, the main body 1 tends to fall back to its original position. Therefore, the rotatability of the main body 1 is poor, and a strong force acts on the hose 8, causing damage to it. Furthermore, as shown in FIG. 10, if the hose 8 is pulled further upward, the center of gravity 13 will move behind the roller 11, and the main body 1 will be in an upright state. That is, the main body 1 did not move as intended by the user, making cleaning very inconvenient.

As mentioned above, conventional vacuum cleaners have a major drawback in that they are very difficult to clean in narrow spaces where furniture is placed.

The present invention solves these conventional problems and greatly improves the usability of the vacuum cleaner.

Means for Solving the Problems The technical means of the present invention for solving the above problems consists of a vacuum cleaner body in which a fan motor, a dust collection chamber, etc. are installed, and a bottom front and rear part of the vacuum cleaner body. a rear slope formed behind the rollers of the vacuum cleaner body and having a rotatable rear caster roller on the upper part; A front slope is formed approximately parallel to the slope and has an intake port for inserting a hose, and the center of gravity of the vacuum cleaner body is placed on the rear slope when the rear slope is brought into contact with the ground. be.

Effect The effect of this technical means is as follows.

That is, when the main body of the vacuum cleaner is turned diagonally upward by pulling the hose upward or by holding the handle, the main body becomes stable because it is supported by the rear slope. Therefore, the main body can be rotated in an oblique state. Therefore, the projected length on the floor from the hose insertion part at the front of the main body to the rearmost part of the main body is shortened, and the turning radius of the main body in that state is significantly reduced.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In FIGS. 1 to 5, 21 is a vacuum cleaner main body (hereinafter referred to as the main body), which has a fan motor 22 built therein. In addition, a dust collection chamber 23 is provided in front of the fan motor 22,
The excess paper bag 24 is attached. This dust collection chamber 23 is opened and closed by a lid 25, and a fan motor 22
The upper part is closed by a main body cover 26.
27 is a handle provided in front of the main body 21.
A roller 28 is provided at the rear lower part of the main body 21, and a caster roller 29 which can rotate 360 degrees is provided at the front lower part. Reference numeral 30 is a rear slope provided upwardly and rearward from the roller 28, and a rear caster roller 31 that can rotate 360 degrees is also provided near the almost top end of the slope. Furthermore, an exhaust port 32 and a rest 33 are provided above it.

Further, a front slope 34 is formed above the handle 27 and is substantially parallel to the rear slope 30, and an intake port 37 into which a hose 35 is inserted via a hose insertion tool 36 is provided on the front slope 34. . Here, the hose insert 36 has a structure that allows it to rotate 360 degrees as shown by the arrow. Further, 38 is the center of gravity when all the parts attached to the main body 21 are included.

The above is the structure, but when the hose 35 is pulled upward or the handle 27 is lifted so that the rear slope 30 is the bottom surface as shown in FIG. 4, the roller 28 and the rear caster roller 31
This causes the main body 21 to stand diagonally. At this time, the center of gravity 38 is located between the roller 28 and the rear caster roller 31 as shown by the arrow, so that the main body 21 can maintain a stable state. Therefore, if the main body 21 is turned in this state, it can be rotated as shown by the arrow. This is because the rear caster roller 31 rotates approximately around the grounding point of the roller 28. Further, since the hose insertion port 36 provided on the front slope 34 rotates, the hose 35 also rotates 360° as shown by the arrow. In other words, not only the main body 21 rotates 360° in an oblique state, but also the hose 35 rotates 360°, making it extremely convenient to use. This is because the distance from the hose insertion port 36 to the tip of the rest 33 at the rearmost part of the main body 21 when projected onto the floor is greater than when it is in contact with the ground by the rollers 28 and caster rollers 29 as shown in FIG. This is because it is much shorter, so it is very difficult to move. That is, the cleaner main body 21 can be easily moved in a narrow space where furniture and the like are arranged, and damage to the furniture and the like is greatly reduced.

Furthermore, since the outlet of the hose 35 is located at a higher position than in the past, cleaning of high places such as shelves and ceilings becomes easier.

In addition, it is of course possible to move the main body 21 by pulling the hose 35 in the state shown in FIG. There is no need to lift the main body 21 by holding the main body 27.

Furthermore, as shown in FIG. 5, the rear caster roller 31 and the rest 33 allow the main body 21 to be in a substantially upright state. At this time, the center of gravity 37 is between the rear caster roller 31 and the rest 3.
3, it is possible to maintain a stable condition, and in this case, the outlet of the hose 35 is at a higher place, making it easier to clean higher places.

Further, according to this configuration, the distance between the roller 28 and the caster roller 29 is smaller than that of the conventional one, that is, the hose insertion tool 36
Since the distance between the tip of the roller 28 and the roller 28 becomes shorter,
Even in the normal state (FIG. 2), the radius of rotation is small and the main body 21 is difficult to turn.

Furthermore, according to the present invention, the air flow is smoother than when the rotating hose insertion port 36 is provided on the top surface of the main body 21, the pressure loss is small, and a decrease in the performance of the vacuum cleaner itself can be avoided. be.

Next, FIG. 6 shows another embodiment, in which the hose insert 36 attached to the front slope 30 does not rotate, but this also allows the main body 21 to remain stable in an inclined state. Therefore, like the above embodiment, the turning radius is small and the saw can be sawed in narrow places. Furthermore, the hose plug 36
Since it faces straight upward, it is easy to clean high places such as ceilings.

As described above, the turning radius is reduced in a stable state, which not only improves maneuverability but also makes it easier to clean high places.

Effects of the Invention As described above, the present invention forms a rear slope having rear caster rollers behind the rollers at the bottom of the vacuum cleaner main body, and also forms a rear slope approximately parallel to the rear slope at the upper front of the vacuum cleaner main body. By providing a front slope with an air intake port for insertion, and by placing the center of gravity of the vacuum cleaner body on the rear slope when the rear slope is grounded, the cleaner can be used in normal use when the main body is stood diagonally. Both of these can reduce the turning radius of the main body, making it easier to saw around in narrow spaces.
In other words, it is effective in not damaging furniture and the like.

Furthermore, since the outlet of the hose is located at a high position, high places such as ceilings can be easily cleaned.

Moreover, it can easily climb over high places such as thresholds.

[Brief explanation of the drawing]

Fig. 1 is a front perspective view showing an embodiment of the present invention, Fig. 2 is a sectional view, Fig. 3 is a rear perspective view, Fig. 4 is a sectional view when standing diagonally, and Fig. 5 is a sectional view when standing upright. 6 is a side view showing another embodiment of the present invention, FIG. 7 is a partial sectional view showing a conventional vacuum cleaner, FIG. 8 is a plan view, and FIGS. Figure 10 is a partial cross-sectional view when it is stood diagonally. 21... Vacuum cleaner body, 22... Fan motor, 23... Dust collection chamber, 28... Roller, 30...
... Rear slope, 31 ... Rear caster roller,
33...rest, 34...front slope, 35...hose, 37...intake port, 38...center of gravity.

Claims (1)

[Scope of Claims] 1. A vacuum cleaner body including a fan motor, a dust collection chamber, etc., a caster roller and rollers disposed at the front and rear of the bottom of the vacuum cleaner body, respectively, and a roller of the vacuum cleaner body. a rear slope formed at the rear and having a rotatable rear caster roller at the top; a front slope formed approximately parallel to the rear slope above the front of the vacuum cleaner body and having an intake port for inserting a hose; A vacuum cleaner, comprising: a rear slope, and the center of gravity of the vacuum cleaner body rests on the rear slope when the rear slope is grounded. 2. A patent claim in which an upper slope is provided above the rear slope and has a certain angle with the rear slope, and a rest part is provided above the upper slope to serve as a fulcrum together with the rear caster roller when the vacuum cleaner body is stood upright. The vacuum cleaner according to item 1 in the scope of .