JPS642369B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a floor suction tool that is used by being attached to the suction section of a vacuum cleaner, central cleaner, or the like.

(B) Prior Art In recent years, carpets and the like have been increasingly used in homes, and conventional floor suction tools have not been able to sufficiently clean out the dirt that has gotten into the hair. As an improvement on this point, a floor suction cleaner uses the intake air flow to rotate a turbine, and uses the rotation of the turbine to rotate a brush to scrape out and clean the dirt that has entered the carpet hair. tools have become popular. In the case of such floor suction equipment, it is necessary to use it for carpets, etc. and for folding, etc., so it is equipped with a first suction port that rotates the turbine and a second suction port that does not rotate the turbine, so that it can be used interchangeably. It's getting old. In addition, in consideration of suction efficiency when used for folding, etc., a rubber piece or a brush with flocked hair in a row was attached to the underside of the floor suction device. As a result, the first suction part, second suction part, turbine, etc. must be housed above the rubber piece, etc., and the suction device for the floor is extremely thick, so it can be placed under a desk or on a chair. It was difficult to clean under the furniture and between the furniture.

(c) Object of the invention The object of the present invention is to obtain a floor suction tool with a reduced thickness without reducing suction efficiency.

(d) Structure of the Invention The structure of the floor suction tool of the present invention will be explained below along with its operation.

As shown in the drawings, the floor suction tool of the present invention includes a turbine that rotates with a suction air flow, a rotating brush that is driven by the turbine, a first suction port where the turbine is located, and the turbine. has a suction tool main body incorporating a switching body for switching between a second suction port and a second suction port where the first suction port is not located; is formed lower than the lower edge of the communication hole with the rotating brush storage part of the unit, and is located at a position behind the suction port on the lower surface of the suction device main body and avoiding a portion relative to the first suction port part;
It is characterized by being equipped with a guide body such as a rubber piece.

With this configuration, the lower edge of the communication hole of the first suction port is lower than the lower edge of the communication hole of the second suction port, so that the flow path of the suction air flow in the first suction port is lower than the lower edge of the communication hole of the second suction port. The suction airflow, which is located below the flow path in the suction port and flows through the lower portion of the first suction port when the brush is driven, passes around the outer circumference of the turbine and efficiently rotates the turbine. Since the guide body is mounted on the lower surface of the suction tool main body at a position that avoids the part corresponding to the first suction port, the floor suction tool can be made thinner by the size of the attachment part of the guide body.

(E) Embodiment A first embodiment shown in FIGS. 1 to 11 will be described.

The floor suction device 1 includes an upper case 2 and a lower case 3 made of synthetic resin, an elastic bumper 4 sandwiched between the two cases 2 and 3, and an inner front part of the upper case 2 and the lower case 3. A rotating brush 7 is housed in a rotating brush accommodating part 6 formed with a suction port 5 facing the floor, and the rotating brush accommodating part 6 is formed at the rear center of the upper case 2 and lower case 3. Communication hole 8
a first suction port 10 having a turbine 9 that rotates with a suction air flow, and a second suction port 12 without the turbine 9 and having a communication hole 11 with the rotating brush housing 6; and both communication holes 8,
a switching body 13 that switches the flow of the suction air flow to the flow path between the first suction port 10 and the second suction port 12 by switching open/close of the first suction port 11; located at the rear of the upper case 2
and a connecting body 15 rotatably mounted between the lower case 3 via a gasket 14.

The rotating brush 7 is formed by installing bristles 7b in a spiral shape around a columnar body 7a. Pivot shafts 16 are formed at both ends of the rotary brush 7, and the pivot shafts 16 are pivotally supported by shaft guide portions 17 formed on both inner surfaces of the lower case 3. Said upper case 2
On one side of the lower case 3, there is a storage part 1 for the belt 18.
9 is formed. The belt 18 is placed around a pulley portion 20 formed at one end of the rotating brush 7.

The first suction port portion 10 and the second suction port portion 12 are connected to the communication holes 8 and 11 with the rotating brush storage portion 6.
The only difference is that they are the same space inside. The turbine 9 is located in the storage section 1 of the belt 18.
A bearing 22 that pivotally supports a shaft 21 extending up to 9 is sandwiched between the upper case 2 and the lower case 3, so that the shaft 21 is rotatably supported. A pulley portion 23 is formed at one end of the shaft 21, and the belt 18 is looped around the pulley portion 23. The turbine 9 and the rotating brush 7 rotate in conjunction with each other via the belt 18. In this embodiment, a timing belt is used as the belt 18, and the pulley portion 2
0 and 23 are shaped like gears. The bottom of the first suction port 10 has a double structure, and when the floor suction device 1 is lifted up, the connecting body 15 rotates to open the valve body 24 and provide an auxiliary valve connected to the front of the turbine 9. A ventilation path 25 is formed. In this embodiment, in order to form the auxiliary air passage 25, a separate auxiliary bottom plate 26 is fixed with screws 27. Said first
The bottom surface of the suction port 10 is the bottom surface of the second suction port 12, in other words, the lower edge of the communication hole 8 is smaller than the lower edge of the communication hole 11, as shown in FIGS. ) is set lower. Therefore, the flow path of the suction air flow passing through the first suction port 10 and flowing into the connecting body 15 via the communication hole 11 is as follows:
Since the lower edge of the communication hole 8 of the first suction port 10 is lower than the lower edge of the communication hole 11 of the second suction port 12, the flow passes through the second suction port 12 and flows into the connecting body 15. The suction airflow, which is located further below the flow path of the suction airflow and flows through the lower part of the first suction part 10 when the rotary brush 7 is driven, passes through the outer circumferential side of the turbine 9 so that the turbine 9 can be efficiently operated. Since the turbine 9 rotates, the turbine 9 can be installed at a lower position, and the floor suction tool 1 can be installed at a lower position.
The thickness can be reduced.

The switching body 13 includes a switching plate portion 13a that slides along a partition wall 28 between the rotating brush storage portion 6, the first suction port portion 10, and the second suction port portion 12; a knob 1 that is integrally formed and slidably held between the upper case 2 and the lower case 3;
3b and more. An insertion hole 13c is formed in the switching plate part 13a, and the switching plate part 13a is slid by operating the knob 13b, so that the insertion hole 13c is aligned with the insertion hole 13c by one side of the insertion hole 8, 11. By matching the two suction ports to one side, the first suction port 10 can be used for suction, and the second suction port 12 can be used for suction. By performing suction through the first suction port 10, the turbine 9 is rotated by the suction air flow, and the rotation is transmitted to the rotating brush 7 via the belt 18. Said second suction port 12
When suction is applied, the rotating brush 7 does not rotate. At this time, since the rotating brush 7 does not rotate and is positioned so as not to close the suction port 5, the dirt sucked in from the suction port 5 is caught on the bristles 7b, and the second suction port The suction efficiency from 12 decreases. In order to prevent the suction efficiency from decreasing, a notch 29 is formed at the edge of the suction port 5 in a portion facing the second suction port 12. The notch 2
By forming the bristles 9, there is less chance of dirt getting caught on the bristles 7b, and even if some dirt gets caught, the suction efficiency will not decrease.

A portion of the lower case 3 located behind the suction port 5 and avoiding the first suction port portion 10 includes:
A guide body 30 made of a long and thin rubber piece is attached. A portion of the bottom of the lower case 3 that avoids the first suction port 10 has sufficient dimensions to form a groove-like mounting portion 31 for mounting the guide body 30 thereon. The guide body 30 consists of a thick mounting portion 30a and a thin lip portion 30b. The lip portion 30b
By coming into contact with the floor surface, the floor suction device 1 prevents air from being sucked in from the rear through which it has passed, contributing to an increase in suction pressure. Although the guide body 30 is not formed in the part corresponding to the first suction port 10, it is located close to the insertion hole 11 of the second suction port 12, so that the suction pressure is high and the dust suction efficiency is improved. There is no major influence, and the guide body 30 works effectively in a portion away from the insertion hole 11.
The attachment portion 31 supports the attachment portion 31 of the guide body 30 by forming protrusions 32 at appropriate locations.

A second embodiment shown in FIG. 12 will be described.

FIG. 12 is a drawing corresponding to FIG. 8 of the first embodiment, in which a brush body with bristles planted in a row is attached as a guide body 33.

(F) Effects of the Invention The present invention provides a method for connecting the lower edge of the communication hole with the rotating brush storage part of the first suction port where the turbine is located to the communication hole with the rotating brush storage part of the second suction port where the turbine is not located. By forming the guide body lower than the lower edge and mounting the guide body in a position avoiding the first suction port, even if the turbine is mounted low by the mounting dimension of the guide body, the intake air flow is directed toward the outer circumferential side of the turbine. The turbine can be rotated efficiently by passing through the floor suction tool, and the thickness of the floor suction tool can be reduced.

[Brief explanation of drawings]

Figures 1 to 11 show the first embodiment; Figure 1 is a plan view with the upper case removed, Figure 2 is a bottom view, Figure 3 is a side view, and Figure 4 is the same view as the first embodiment. of-
Cross-sectional view, Figure 5 is a V-V cross-sectional view of Figure 1, Figure 6
The figure is a sectional view of Fig. 1, Fig. 7 is a sectional view of Fig. 1, Fig. 8 is a sectional view of Fig. 1, Fig. 9 is a sectional view of Fig. 1, and Fig. 10 is a sectional view of Fig. 1. XX sectional view in Figure 1, Figure 11 is a perspective view of the auxiliary bottom plate,
FIG. 12 is a sectional view similar to FIG. 8 showing the second embodiment. 2... Upper case (suction tool body), 3... Case (suction tool main body), 7... Rotating brush, 10... First
Suction port, 12...second suction port, 13...switching body, 30...guiding body.

Claims (1)

[Claims] 1. Switching operation for switching between a turbine that rotates with the intake air flow, a rotating brush driven by the turbine, a first suction port where the turbine is located, and a second suction port where the turbine is not located. The lower edge of the communication hole between the first suction port and the rotating brush storage section is set closer to the lower edge of the communication hole between the second suction port and the rotating brush storage section. A floor suction device that is formed low and has a guide member such as a rubber piece attached to a position behind the suction port on the lower surface of the suction device main body and away from a portion corresponding to the first suction port portion.