JPH05253118A - Suction implement for vacuum cleaner - Google Patents

Abstract

PURPOSE:To provide the suction implement for the vacuum cleaner, by which operation resistance is light and handling comrenience is satisfactory even on a carpet whose operability is heavy especially. CONSTITUTION:When suction force is applied to a suction implement main body 11, a pressure receiving area is large since a rotary roller body 17 whose width is nearer to the width of a suction implement main body is provided in the rear part of the lower case 13, and also, the rotary roller body rotates together with running of the suction implement main body, therefore, operation resistance is not varied so much even if suction force is applied. Also, a tire 19 of the rotary roller body is formed by cut pile-like spun yarn cloth of fine fibers, therefore, even if the suction implement is pressed against a carpet, prescribed gas passability is held, absorption force scarcely increases, and operation resistance of the suction implement main body is stabilized. Moreover, even on the rugged floor surface, the spun yarn cloth absorbs the ruggedness and smooth runnability is held. Furthermore, even if hair, etc., get entangled to the rotary roller body, it is detached and can be taken off simply.

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 an electric vacuum cleaner used in ordinary households.

[0002]

2. Description of the Related Art Conventionally, this type of suction tool for an electric vacuum cleaner has been
As shown in FIGS. 5 and 6. That is, the suction tool body 1 is formed by the upper case 2 and the lower case 3,
A suction port 4 was formed in the lower case 3, and a small front roller 5 and a rear roller 6 were provided at the front and rear for running the suction tool body 1. In addition, the clearance A between the lower surface 7 around the suction port 4 of the lower case 3 and the floor surface increases the suction force with respect to the floor surface, and the flow velocity of the airflow flowing through the clearance A portion is increased to strongly remove dust. In order to inhale, the gap cannot be made large, and on the contrary, if it is made too small, there will be problems such as hard dust getting caught in this gap and damaging the floor surface.
It was set to have a size of about 0.5 to 2 mm. Therefore, in order to further increase the suction force, a lip-shaped strip 8 formed of a soft material is provided immediately behind the suction port 4 in a shape closer to the lateral width of the suction tool body 1.

[0003]

However, in the case of such a structure, when suction force is applied to the suction tool body 1, especially on a 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 onto the carpet. Also,
At the same time, the lip-shaped strip 8 is similarly pressed onto the carpet. As a result, the lower surface portion 7 of the lower case 3
The frictional resistance between the whole and the carpet increased, and the operation resistance of the suction tool body 1 became very heavy, resulting in a poor usability.

Therefore, the present invention solves the above problems and provides a more convenient suction tool for an electric vacuum cleaner.

[0005]

In order to achieve the above-mentioned object, the present invention provides a suction tool body having an upper case and a lower case and having a suction port formed on the lower surface, and a suction tool body for running. For this purpose, a pair of rollers is provided in the front part of the lower case, a rotary roller body having a width closer to the width of the suction tool body is provided in the rear part, and the tire on the surface of the rotary roller body is formed of fine fibers. It is formed of a cut pile spun cloth.

Further, the rotating roller body is detachably provided from the lower surface side of the lower case.

[0007]

According to the present invention, when a suction force is applied to the suction tool body, a rotary roller body having a width closer to the lateral width of the suction tool body is provided at the rear portion of the lower case when the suction tool body has a suction force. It becomes difficult for the rotary roller body to be buried in the carpet, so that the lower surface of the lower case is not pressed against the carpet. Also, because the rotating roller body that receives pressure rotates as the suction tool body travels, the friction resistance between the entire lower surface of the lower case and the carpet does not increase, and the suction tool body operation resistance is affected by suction force. But it doesn't change much.

Further, since the tire on the surface of the rotary roller body is formed of a cut pile spun cloth made of fine fibers, a certain breathability is maintained even if the tire is pressed against the carpet by suction force. There is also an air flow that flows into the suction port from this portion, so that the suction force does not increase and the operation resistance of the suction tool body is stabilized. Furthermore, since the tire on the surface of the rotating roller body is made of cut pile spun cloth made of fine fibers, the spun cloth absorbs the unevenness even when running on a hard floor with some unevenness. The result is smooth running performance.

Further, even if hair or the like is entangled in the surface of the cut pile spun cloth formed of fine fibers, the rotating roller body is detachably provided from the lower surface side of the lower case, so that the rotating roller body is It can be easily cleaned by removing it from the lower case.

As described above, it is possible to provide a suction tool for an electric vacuum cleaner which is easy to use.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2, the suction tool body 11 includes an upper case 12 and a lower case 13.
And a suction port 15 is formed on the lower surface 14 of the lower case 13, and a pair of rollers 16 is provided at the front part of the lower case 13 for traveling and the lateral width of the suction tool body 11 is provided at the rear part. The rotating roller body 17 having a width closer to the above is provided.

The rotary roller body 17 is constructed as shown in FIGS. That is, a tire 19 made of a cut pile spun cloth made of fine fibers is wound around the pipe 18, and holders 20 are fixed to both end faces of the pipe 18. Then, the bearing 2 is inserted into the pipe-shaped hole 21 formed in the holder 20.
A shaft 24 having a claw 23 formed in 2 is fitted rotatably. Further, a spring 25 is arranged between the holder 20 and the bearing 22, and the bearing 22 serves as the holder 2.
It is urged so that it can move to the 0 side and return to its original position.

The bearing 22 is fitted in a bearing hole 26 formed in the lower case 13, and when the tire 19 of the rotary roller body 17 is moved in the thrust direction of the shaft, the spring 25 is compressed on one side. In the other direction, the bearing 22 is removed from the bearing hole 26 by the amount of the movement, and the rotating roller body 17 can be removed from the lower case 13. When inserting, the bearing 22 can be easily inserted by pushing the bearing 22 toward the thrust side and shrinking it.

Next, the connecting pipe 27, which is a pipe for carrying the dust-containing airflow flowing from the suction port 15, is formed by the shaft portion 28 formed in the connecting pipe 27 and the upper case 12 and the lower case 13. The bearing 29 allows the suction tool body 11 to be kept horizontal with respect to the floor even when the height of the handle of the person changes, as well as being rotatable by a fixed angle. It is like this. Reference numeral 30 is a lip-shaped strip formed of a soft material.

According to the present invention, the suction tool body 11 has the above structure.
When a suction force is applied to the lower case 13, a rotary roller body 17 having a width closer to the lateral width of the suction tool body 11 is provided at the rear portion of the lower case 13, so that the pressure receiving area is large, and the suction force makes it difficult for the rotary roller body 17 to be buried in the carpet. ,For this reason,
The lower surface 14 of the lower case 13 is no longer pressed against the carpet. Further, since the rotating roller body 17 that receives pressure rotates as the suction tool body 11 travels, 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 body 11 increases. , Even if a suction force is applied, it does not change much.

Further, since the tire 19 on the surface of the rotary roller body 17 is made of a cut pile spun cloth made of fine fibers, a certain breathability is maintained even if the tire 19 is pressed onto the rug by suction force. There is also an airflow flowing from this portion to the suction port 15 from this portion, so that the suction force does not increase and the operation resistance of the suction tool body 11 is stabilized. Further, the tire 19 on the surface of the rotating roller body 17
Since it is formed of a cut pile spun cloth made of fine fibers, the spun cloth absorbs the unevenness and allows smooth running even when running on a hard floor with some unevenness. It is a thing.

Further, even if hair or the like is entangled with the surface of the cut pile-shaped spun cloth made of fine fibers, the rotating roller body 11 is detachably provided from the lower surface 14 side of the lower case 13, so that it can be rotated. Roller body 17 in lower case 1
It can be easily cleaned by removing it from 3.

[0018]

As described above, according to the present invention, when a suction force is applied to the suction tool body, a rotary roller body having a width closer to the lateral width of the suction tool body is provided at the rear portion of the lower case, so that the pressure receiving area is large and the suction The force makes it difficult for the rotary roller body to be buried in the rug, so that the lower surface of the lower case is not pressed against the rug. Also, because the rotating roller body that receives pressure rotates as the suction tool body travels, the friction resistance between the entire lower surface of the lower case and the carpet does not increase, and the suction tool body operation resistance is affected by suction force. But it doesn't change much.

Further, since the tire on the surface of the rotating roller body is formed of a cut pile spun cloth made of fine fibers, a certain breathability is maintained even if the tire is pressed against the carpet by suction force. There is also an air flow that flows into the suction port from this portion, so that the suction force does not increase and the operation resistance of the suction tool body is stabilized. Furthermore, since the tire on the surface of the rotating roller body is made of cut pile spun cloth made of fine fibers, the spun cloth absorbs the unevenness even when running on a hard floor with some unevenness. The result is smooth running performance.

Further, even if hair or the like is entangled in the surface of the cut pile spun cloth formed of fine fibers, the rotating roller body is detachably provided from the lower surface side of the lower case, so It can be easily cleaned by removing it from the lower case.

In this way, it is possible to provide a convenient suction tool for an electric vacuum cleaner.

[Brief description of drawings]

FIG. 1 is a central sectional view seen from the side in an embodiment of the present invention.

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

FIG. 3 is a partial sectional view of the rotary roller body portion.

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

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

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

[Explanation of symbols]

 11 Suction Tool Main Body 12 Upper Case 13 Lower Case 14 Lower Surface 15 Suction Port 16 Roller 17 Rotating Roller Body 19 Tire

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Kaji 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Hiroyuki Uraya, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A suction tool body having an upper case and a lower case and having a suction port formed on a lower surface thereof, and a pair of rollers provided at a front portion of the lower case for running the suction tool body. An electric vacuum cleaner characterized in that a rotating roller body having a width closer to the width of the suction tool body is provided at the rear part, and the tire on the surface of the rotating roller body is formed of a cut pile spun cloth formed of fine fibers. Suction tool. 2. A suction tool for an electric vacuum cleaner according to claim 1, wherein the rotating roller body is detachably provided from the lower surface side of the lower case.