JPH03295522A - Suction implement for vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent a flaw caused by the contact of a the surface to be cleaned by providing a napped cloth made of cut pile-like spinning cloth on the bottom face of the outside periphery of the lower suction implement of the suction implement, and providing a napped cloth change time display device operated by internal pressure of the suction implement by suction to the surface to be cleaned. CONSTITUTION:In the front part of a suction implement main body 5, plural pieces of suction passages 13 are formed between a napped cloth 12 and the cloth 12, and in the rear part, the cloth 12 is formed integrally so as to come to almost the same as the length in the longitudinal direction of the lower suction implement 7. When a wooden floor or a cushion floor of the surface to be cleaned is cleaned, the tip part of the cloth 12 stuck and fixed to a fitting seat 11 comes into contact therewith and slides by a forward/backward cleaning operation. When the worn napped cloth 12 comes into contact with the surface to be cleaned, the vacuum pressure of the inside of the suction implement main body 5 rises, and a valve 17 is energized in the direction as indicated with an arrow by outside air pressure. When it exceeds energizing force of a spring 18, the valve 17 moves in the direction as indicated with an arrow, and a change time of the cloth 12 is informed in a position opposed to a display window 20.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a floor suction tool for a vacuum cleaner, and relates to a structure of the suction tool suitable for cleaning a floor surface of 9 tatami mats.

2. Description of the Related Art Conventionally, this type of floor suction device is disclosed in, for example, Japanese Unexamined Patent Publication No. 1-11471.
As shown in Publication No. 4, the structure shown in FIG.
A suction tool specifically designed for a 9-tatami wooden floor was considered, in which a bank-like mounting seat 3 was formed on the outer periphery of the vacuum cleaner, and a raised fabric 4 made of cut pile-shaped spun cloth was provided on the mounting seat 3.

Problem to be Solved by the Invention However, with such a structure, since the raised fabric 4 is made of ultra-fine fibers with a pile thickness of 0.1 mm or less and is formed with high density, it will wear out after long use. However, if used as is, the lower suction tool 2 would come into contact with the surface to be cleaned, causing damage to the surface to be cleaned.

The present invention solves this problem and provides an excellent suction tool that notifies you when it is time to replace the suction tool, which improves the operating feel and prevents scratches on hard surfaces such as wooden floors and other hard surfaces like a rag. The purpose is to provide.

Means for Solving the Problems In order to solve these conventional problems, the means of the present invention are as follows:
A suction tool has a suction port that sucks in dust, etc., and a raised cloth made of cut pile-shaped spun cloth is provided on the bottom surface of the outer periphery of the lower suction tool of this suction tool, and the suction tool is removed by adsorption between the raised cloth and the surface to be cleaned. It consists of a napkin replacement time display device that operates frequently depending on the internal pressure.

Function: In the means of the present invention, when the raised cloth decreases due to long-term use, the internal pressure of the suction tool increases due to the adsorption of the reduced raised cloth and the surface to be cleaned. The nap cloth replacement time display device is activated by the internal pressure to notify the nap cloth replacement time and prevent the lower suction tool from being damaged by contact with the surface to be cleaned.

Example Examples thereof will be described below with reference to the accompanying drawings.

In FIGS. 1 to 3, the suction tool main body 5 is the upper suction tool 6.
It is obtained by combining the upper suction tool 7 and the lower suction tool 7, and is rotatably attached to the upper suction tool 6. 9 is the suction port and the lower suction device 7
A suction groove 1o is formed approximately in the center of the lower suction tool 7, communicates with the pipe 8, and extends from the suction port 9 to the left and right ends of the lower suction tool 7.

Embankment-shaped mounting seats 1 are provided at the front and rear of the suction groove 10 and on the bottom surface of the outer periphery.
1 is formed. Reference numeral 12 is a raised fabric formed in the longitudinal direction of the lower suction tool 7, and is made of a cut pile-like spun cloth, and is fixed to the upper surface of the mounting seat 11 by adhesive or the like.

The pile thickness of the raised fabric 12 is made of ultrafine fibers of 0.1wn or less and is formed with high density. The pile length is set to 4 mm or more in order to reduce the contact resistance with the surface to be cleaned and make it easier to slide during operation, and to obtain a soft feel. Regarding the installation and arrangement of the raised fabric 12, the front part of the suction device main body 5 forms a plurality of suction passages 13 between the raised fabric 12 and the raised fabric 12 to ensure the dust suction performance of the front corner. We are making improvements. By adjusting the height of the upper surface of the suction passage 13, the dust suction performance can be changed as desired.

In addition, in the rear part, the raised fabric 12 is integrally formed to have almost the same length in the longitudinal direction as the lower suction tool 7, and the tightness of the suction groove 1o part is improved and the suction pressure is increased, so that the groove part of the surface to be cleaned, etc. Improves dust absorption performance. Furthermore, regarding the side part, the dust suction airflow is at high speed from the side of the lower suction tool 7, and the suction groove 1o
A lateral inflow passage 14 is provided to ensure and improve lateral dust suction performance. In addition, the height of the side flow path 14.

Dust suction performance can be varied by changing the shape and adjusting the opening cross-sectional area. In addition, 12 naps
The shape of both ends is the front of the suction tool main body 6.

It is formed into a rounded and smooth shape so that the dust sucked in from the rear side can smoothly flow into the suction groove 1o without getting caught on the edge of the raised cloth 12.

16, when the raised fabric 12 is worn out due to long-term use,
When the worn napping fabric 12 comes into contact with the surface to be cleaned and the vacuum pressure inside the suction tool body 6 increases more than necessary, the napping fabric has a protector function that introduces outside air and reduces the internal pressure of the suction tool main body 6. When to replace the napping fabric. It is a display device. This napping cloth replacement time display device 16 includes an air inflow hole 16, a valve 17 that opens and closes this air inflow hole 16, a spring 18 that biases this valve 17 in the direction of contacting the air inflow hole 16, and this spring 18. It is composed of a support part 19 that supports one end, and a display window 20 that is opened at a position opposite to the valve 17 when the valve 17 is moved in the direction of the arrow by the internal pressure of the suction device main body 6. . 21 is a cover having a hole 22 communicating with the air inflow hole 16 and the display window 20. The napping cloth replacement time display device 15 and the cover 21 are attached to the upper suction tool 6. Further, the valve 17 has a lip 24 on its outer periphery for sliding on the transparent tube 23.

Next, you will explain the first operation in the configuration of this embodiment. The pipe 8 of the suction device main body 6 is connected to an extension pipe via a hose connected to the vacuum cleaner main body, and when the surface to be cleaned, such as a wooden floor or a cushion floor, is cleaned, it is glued and fixed to the mounting seat 11. The tip of the raised cloth 12 comes into contact with the surface to be cleaned and slides along with the back and forth cleaning action.

At this time, the raised cloth 12 worn out due to long-term use comes into contact with the surface to be cleaned, and the vacuum pressure inside the suction tool main body 6 increases.

At this time, the external pressure forces the valve 17 in the direction of the arrow, and when the force exceeds the force of the spring 18, the valve 17 is operated in the direction of the arrow and moves to a position facing the display window 2o, To notify when it is time to replace the napping cloth 12.

Effects of the Invention As described above, in the present invention, when the raised cloth becomes worn out due to long-term use, the internal pressure of the suction tool increases due to the adsorption of the worn-down raised cloth and the surface to be cleaned. A raised cloth replacement time display device operates to notify the user of the time to replace the raised cloth, thereby preventing the lower suction tool from being damaged by contact with the surface to be cleaned.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a suction tool showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line X-x in Fig. 1, Fig. 3 is a bottom perspective view of the suction tool, and Fig. 4 is a conventional suction tool. FIG. 3 is a sectional view of a suction tool showing a raised cloth method. 5... Suction tool main body, 7...-Lower suction tool, 9... Suction port, 12... Raised fabric, 1
6...Dressing cloth replacement time display device.

Claims (1)

[Claims] A suction tool has a suction port that sucks in dust, etc., and a raised cloth made of cut pile-shaped spun cloth is provided on the bottom surface of the outer periphery of the lower suction tool of this suction tool, and the suction tool is removed by adsorption between the raised cloth and the surface to be cleaned. A suction tool for a vacuum cleaner comprising a nap cloth replacement time display device operated by internal pressure.