JP3168673B2 - Vacuum cleaner suction tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, this type of suction device for a vacuum cleaner has
It was as shown in FIG. 5 and FIG. That is, the suction tool main body 1 is formed by the upper case 2 and the lower case 3,
A suction port 4 is formed in the lower case 3, and small front rollers 5 and rear rollers 6 are provided at the front and rear, respectively, for running the suction tool body 1. Further, the gap A between the lower surface 7 around the suction port 4 of the lower case 3 and the floor surface increases the adsorbing force on the floor surface and increases the flow velocity of the airflow flowing through the gap A portion to strongly remove dust. In order to inhale, the gap cannot be made large, conversely if it is too small, there is a problem that hard dust etc. gets caught in this gap and damages the floor surface,
The size was set to be about 0.5 to 2 mm. For this reason, in order to further increase the suction force, a lip-shaped band 8 made of a soft material is provided immediately behind the suction port 4 so as to be closer to the width of the suction tool body 1.

[0003]

However, in such a structure, when a suction force is applied to the suction tool main body 1, especially on the carpet, the front roller 5 is attracted by the suction force.
The rear roller 6 is buried in the carpet, and the lower surface portion 7 of the lower case 3 is pressed against the carpet. Also,
At the same time, the lip-shaped band 8 is similarly pressed onto the carpet. As a result, the lower surface 7 of the lower case 3
The frictional resistance between the whole and the carpet has increased, and the operational resistance of the suction tool main body 1 has become very heavy, making it inconvenient.

Accordingly, the present invention is to solve the above-mentioned problem and to provide a more convenient suction tool for a vacuum cleaner.

[0005]

In order to achieve the above object, the present invention provides a suction tool main body having a suction port formed on a lower surface thereof, and a connection rotatably provided behind the suction tool main body.
A pipe and a traveling row provided at a lower front portion of the suction tool body.
And the axial direction at the lower rear of the suction tool body
Horizontally long, rotatably mounted so that it is in the width direction of the
It has a rotating roller body, at the lower rear of the suction tool body
Form a horizontally long recess that is concave upward and open rear.
The rotating roller body can be detached from the lower side in the recess of
It is attached . Further, the surface of the rotating roller body is formed by a cut pile spun cloth made of fine fibers.

[0006]

According to the present invention, a horizontally long rotating roller provided at the rear of the suction tool main body increases the pressure receiving area even if suction force is applied to the suction tool main body. The roller body is less likely to be buried in the carpet, so that the lower surface of the suction tool main body is not pressed against the carpet. In addition, since the rotating roller body receiving pressure rotates with the travel of the suction tool main body, the frictional resistance between the entire lower surface portion of the suction tool main body and the carpet does not increase, and the operation resistance of the suction tool main body is reduced by the suction force. It does not change much even if it is applied.

[0007] Also, the upper part of the suction tool main body is recessed upward.
A horizontally long recess with an open rear
Wherein mounting the rotary roller member from the lower surface side detachably to
In the so as easier insertion of the finger into the recess, when such hair is wound around the rotating roller body, it is easy to clean and easy to remove the rotary roller body from the lower portion case.

Further, since the surface of the rotating roller body is formed of a cut pile spun cloth made of fine fibers, a constant air permeability is maintained even if the rotating roller body is pressed against the carpet by an adsorption force. There is also an airflow that flows into the suction port from
For this reason, the operating resistance of the suction tool main body is stabilized without increasing the suction force. Furthermore, since the surface of the rotating roller body is formed of cut pile-shaped spun cloth formed of fine fibers, the spun cloth absorbs the unevenness even when running on a hard floor surface having a slight unevenness. A smooth running property can be obtained.

Thus, it is possible to provide an easy-to-use suction tool for a vacuum cleaner.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. 1 and 2, the suction tool main body 11 includes an upper case 12 and a lower case 13.
A suction port 15 is formed in the lower surface 14 of the lower case 13, a pair of rollers 16 is provided at the front of the lower case 13 for running, and the width of the suction tool main body 11 is provided at the rear. The width of the rotating roller body 17 is provided.

The rotating roller body 17 has a structure as shown in FIGS. That is, a tire 19 formed of cut pile spun cloth formed of fine fibers is wound around the outside of the pipe 18, and holders 20 are fixed to both end faces of the pipe 18. The bearing 2 is inserted into a pipe-shaped hole 21 formed in the holder 20.
A shaft 24 having a claw 23 formed therein is rotatably fitted. A spring 25 is provided between the holder 20 and the bearing 22 so that the bearing 22
It is biased so that it can move to the zero side and return to the original position.

The bearing 22 is fitted in a bearing hole 26 formed in the lower case 13, and when the bearing 19 is moved in the axial thrust direction with the tire 19 of the rotating roller body 17, one of the springs 25 is compressed. In the other direction, the bearing 22 is disengaged from the bearing hole 26 by the amount of movement, and the rotating roller body 17 can be disengaged from the lower case 13. At the time of insertion, the bearing 22 can be easily inserted by pressing the bearing 22 to the thrust side to contract it.

Next, a connecting pipe 27, which is a pipe for carrying a dust-containing airflow flowing from the suction port 15, is formed by a shaft portion 28 formed in the connecting pipe 27 and the upper case 12 and the lower case 13. It is rotatable by the bearing portion 29 and rotatable by a certain angle, so that the suction device main body 11 can maintain a horizontal state with respect to the floor surface even when the height of a person's handle changes. It has become. Reference numeral 30 denotes a lip-shaped band formed of a soft material.

According to the present invention, the suction device main body 11 having the above structure is provided.
When the suction force is applied to the lower case 13, the rotating roller body 17 having a width closer to the lateral width of the suction tool main body 11 is provided at the rear part of the lower case 13, so that the pressure receiving area is large, and the rotating roller body 17 is hardly buried in the carpet due to the suction force. ,For this reason,
The lower surface 14 of the lower case 13 is not pressed against the carpet. In addition, since the rotating roller body 17 receiving pressure rotates with the travel of the suction tool main body 11, the frictional resistance between the entire lower surface 14 of the lower case 13 and the carpet does not increase, and the operation resistance of the suction tool main body 11 is reduced. It does not change much even when suction force is applied.

Further, since the tire 19 on the surface of the rotating roller body 17 is formed of a cut pile spun cloth made of fine fibers, a constant air permeability can be maintained even if the tire is pressed against the carpet by an adsorption force. There is also an airflow that flows into the suction port 15 from this portion, and therefore, the operation resistance of the suction tool main body 11 is stabilized without increasing the suction force. Furthermore, the tire 19 on the surface of the rotating roller body 17
Is formed by a cut pile spun cloth made of fine fibers, so that even when traveling on a hard floor surface with some unevenness, the spun cloth absorbs this unevenness and smooth running performance is obtained. Things.

Further, even if hair or the like is entangled with the surface of the cut pile spun cloth formed of fine fibers, the rotating roller body 11 is provided detachably from the lower surface 14 side of the lower case 13, so that the rotating roller body 11 can be rotated. Roller body 17 to lower case 1
Remove from 3 for easy care.

[0017]

As described above, according to the present invention, even if a suction force is applied to the suction tool main body, since the horizontally long rotating roller body provided at the rear portion of the suction tool main body is provided, the pressure receiving area is increased, and the suction power is increased. This makes it difficult for the rotary roller body to be buried in the carpet, so that the lower surface portion of the suction tool main body is not pressed against the carpet. In addition, since the rotating roller body receiving pressure rotates with the travel of the suction tool main body, the frictional resistance between the entire lower surface portion of the suction tool main body and the carpet does not increase, and the operation resistance of the suction tool main body is reduced by the suction force. It does not change much even if it is applied.

[0018] Further, the lower part of the suction tool main body is recessed upward.
A horizontally long recess with an open rear
The revolving roller body is detachably mounted on the lower surface side
In the so as easier insertion of the finger into the recess, when such hair is wound around the rotating roller body, it is easy to clean and easy to remove the rotary roller body from the lower portion case.

Further, since the surface of the rotating roller body is formed of a cut pile spun cloth made of fine fibers, a constant air permeability is maintained even if the rotating roller body is pressed against the carpet by an adsorption force. There is also an airflow that flows into the suction port from
For this reason, the operating resistance of the suction tool main body is stabilized without increasing the suction force. Furthermore, since the surface of the rotating roller body is formed of cut pile-shaped spun cloth formed of fine fibers, the spun cloth absorbs the unevenness even when running on a hard floor surface having a slight unevenness. A smooth running property can be obtained.

Thus, it is possible to provide an easy-to-use suction tool for a vacuum cleaner.

[Brief description of the drawings]

FIG. 1 is a cross-sectional central view of one embodiment of the present invention as viewed from the side.

FIG. 2 is a perspective view seen from the lower case side.

FIG. 3 is a partial cross-sectional view of the rotating roller body.

FIG. 4 is a partially exploded perspective view of the rotating roller body.

FIG. 5 is a central sectional view of a conventional suction tool main body viewed from the side.

FIG. 6 is a perspective view as viewed from the lower case side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Suction tool main body 12 Upper case 13 Lower case 14 Lower surface 15 Suction port 16 Roller 17 Rotation roller body 19 Tire

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahiro Kaji 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-63-82613 (JP, A) JP-A-59-144428 (JP, A) JP-A-2-104319 (JP, A) JP-A-5-253123 (JP, A) JP-A-5-245075 (JP, A) JP-A-54-142963 (JP, U) JP-A 1-8358 (JP, U) JP-A 56-94643 (JP, U) JP-A 54-39342 (JP, Y2) (58) Field surveyed (Int. Cl. ⁷ , DB name) A47L 9/02

Claims (2)

(57) [Claims] 1. A suction tool main body having a suction port formed on a lower surface thereof ,
A connecting pipe rotatably provided behind the suction tool main body,
A traveling roller provided at the lower front of the suction tool body,
The axial direction at the lower rear of the suction tool body is the width of the suction tool body.
A horizontally long rotating roller that is mounted so that it can rotate freely
Body, with an upward recess at the lower rear of the suction tool body.
And a horizontally long recess with an open rear is formed.
A suction device for an electric vacuum cleaner, wherein the rotating roller body is detachably attached from a lower surface side. 2. The suction device for a vacuum cleaner according to claim 1, wherein the surface of the rotating roller body is formed of a cut pile spun cloth made of fine fibers.