JPH05253119A - Suction implement for vacuum cleaner - Google Patents

Abstract

PURPOSE:To stabilize operation resistance of an operating part by providing a pair of rollers respectively in the front part and the rear part of the lower case for the purpose of running a suction implement main body, and providing a rotary roller body in which a tire on the surface is formed by a soft resin material, in the part just rear of a suction port. CONSTITUTION:This suction implement main body 11 consists of the upper and the lower cases 12, 13, a suction port 15 is provided on the lower face 14 of the lower case 12, and also, a pair of rollers 16, 17 are provided in the front part and the rear part, respectively for the purpose of running. Also, a rotary roller body 18 whose width is near width of the suction implement main body 11 is provided in the part just rear of the suction port 15. This rotary roller body 18 is constituted by installing a tire formed by a soft resin material such as soft vinyl chloride, etc., in the outside of a pipe. According to such a suction implement, since a pressure receiving area of the rotary roller body 18 is large, the rotary roller body 18 comes to be scarcely embedded into a carpet due to suction force, and the lower face part of the lower case 13 is not pressed against the carpet.

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. 4 and 5. 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 at the front and rear of the lower case respectively, and a rotary roller body having a width closer to the lateral width of the suction tool body is provided immediately behind the suction port. It is formed of the resin material of.

Further, the tire on the surface of the rotary roller body is formed of a cut pile spun cloth made of fine fibers.

[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 immediately behind the suction port, so that the pressure receiving area is large and 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, in the case where the tire on the surface of the rotary roller body is formed by the cut pile spun cloth made of fine fibers, since the fine fibers are formed in the cut pile shape, it is Even if it is pressed against the carpet, a certain level of air permeability is maintained, so that the suction pad body does not increase in suction force and the operation resistance of the suction tool body is stabilized.

As described above, the suction tool for the electric vacuum cleaner, which is easy to use, can be provided.

[0010]

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 is shown.
Is composed of an upper case 12 and a lower case 13. A suction port 15 is formed on a lower surface 14 of the lower case 13, and a pair of rollers 16 and 17 are provided at a front portion and a rear portion for traveling, respectively. A rotary roller body 18 having a width closer to the lateral width a of the suction tool body 11 is provided immediately rearward of the suction roller body 11. The rotary roller body 18 has a structure as shown in FIG. That is, a tire 20 made of a soft resin material such as soft vinyl chloride is wound around the outside of the pipe 19, and a holder 22 to which a shaft 21 is fixed is fixed to both end faces of the pipe 19. The shaft 21 is rotatably held by a bearing portion 23 formed by the upper case 12 and the lower case 13. In addition, the tire 20 of the rotating roller body 18
Can also be formed from a cut pile spun cloth made of fine fibers.

The connecting pipe 24, which is a pipe for carrying the dust-containing airflow flowing from the suction port 15, has a shaft portion 25 formed on the connecting pipe 24 and a bearing formed by the upper case 12 and the lower case 13. It is rotatable by the part 26 and is also rotatable by a certain angle so that the suction tool body 11 can be maintained in a horizontal state with respect to the floor surface even if the height of the handle of the person changes. Was becoming.

With the above structure, since the dust falling on the floor is sucked, when the suction force is applied to the main body of the suction tool, the lower surface 14 of the lower case 13 is strongly attracted to the floor. In particular, in this case, on the carpet, the rollers 16, 1 protruding from the lower surface 14 of the lower case 13 are
7 and the rotating roller body 18 tend to be embedded in the rug's hair. However, since the rotary roller body 18 having a width closer to the lateral width of the suction tool body 11 is projected just behind the suction port 15 and the rollers 16 and 17 are similarly projected, the pressure receiving area is large, and the rotary roller body 18 is woven by the suction force. Therefore, the lower surface portion 7 of the lower case 3 is not pressed against the carpet. In addition, the rotating roller body 18 receiving pressure is the suction tool body 11
Since it rotates as the vehicle travels, the frictional resistance between the entire lower surface 14 of the lower case 3 and the upper part of the carpet does not increase, and the operating resistance of the suction tool body 11 does not change much even when a suction force is applied. Further, in the case where the tire 20 on the surface of the rotary roller body 18 is formed of a cut pile spun cloth formed of fine fibers, since the fine fibers are formed in the cut pile shape, the carpet is attracted to the carpet. Even when pressed upward, a certain level of air permeability is maintained, so that the suction force does not increase and the operation resistance of the suction tool body 11 is stable.

[0014]

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 immediately behind the suction port, so that the pressure receiving area is large and the suction force is large. 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.

The tire on the surface of the rotating roller body is
In the case of a cut pile spun cloth made of fine fibers, since the fine fibers are formed in a cut pile shape, a certain level of breathability is maintained even if the fine fibers are pressed against the rug by adsorption force. Therefore, the suction force does not increase, and the operation resistance of the suction tool body is stabilized.

As described above, the suction tool for the electric vacuum cleaner, which is easy to use, can be provided.

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

FIG. 5 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, 17 Roller 18 Rotating Roller Body 20 Tire

Claims (2)

[Claims] 1. A suction body comprising an upper case and a lower case and having a suction port formed on the lower surface, and a pair of rollers provided at the front and rear of the lower case for running the suction body. A suction tool for an electric vacuum cleaner in which a rotary roller body having a width closer to the width of the suction tool body is provided immediately behind the suction port, and the tire on the surface of the rotary roller body is formed of a soft resin material. 2. The suction tool for an electric vacuum cleaner according to claim 1, wherein the tire on the surface of the rotary roller body is formed of a cut pile spun cloth formed of fine fibers.