JPH08243059A - Suction member of vacuum cleaner - Google Patents

Abstract

PURPOSE: To improve dust sucking performance of a floor brush near the wall in such a manner that a front opening for sucking dusts from the front side of a suction member main body and side openings for sucking dusts from the sides are provided and an opening switching means for mechanically opening or closing either the front opening or the side openings is also provided. CONSTITUTION: A front opening 8 and side openings 9 are formed on the under face of a suction member main body 12. When a grip 11a of a lever 11 is moved in the direction of the arrow, an inclined face 16 downwardly pushes side valves 10 which open/close the side openings 9. The side valves 10 close a suction air passage 6 by which the side openings 9 and a suction port 5 which are formed in a case are communicated. When the lever 11 is moved in the direction opposite to the arrow direction, a coil spring 17 moves the side valves 10 upwardly and the suction air passage 6 is opened. When a portion near an obstacle such as wall or furniture is cleaned, a suction air from the side openings 9 is shielded by closing the side valves 10. Consequently, an air flow at the front opening 8 of the suction member main body 12 is increased, thereby the suction performance from the front of the suction member main body 12 is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner suction tool.

[0002]

2. Description of the Related Art FIG. 6 is a structural explanatory view showing a suction tool with a smear cleaning function of a conventional electric vacuum cleaner disclosed in, for example, Japanese Utility Model Laid-Open No. 6-3255. In the figure, 1 is a lower case, 2
Is an upper case and is screwed through the bumper 3. The bumper 3 is provided on the front portion of the suction tool body 12 and is made of a soft resin. A joint 4 is rotatably formed between the upper and lower cases 1 and 2. A suction port 5 communicates with the joint 4 through an air passage formed by the upper and lower cases 1 and 2. The lower case has a fixed blade 13a and a movable blade 13b for ensuring a suction rate.
Is provided. Further, the blades 13a and 13b are configured such that the lower edge thereof does not come into contact with the floor surface by a suction tool, and there is one in which the blades are always brought into contact with the floor. The movable blade 13b is provided in front of the suction port 5 provided in the main body of the suction tool so as to be vertically and rotatably rotatable with respect to the floor F, and rotates back and forth via the operating blade 15 in response to elastic deformation of the bumper 3. Is configured.

In the suction tool of the electric vacuum cleaner shown in FIG. 6, the bottom surface side of the suction tool as viewed from the lower case 1 side is not shown, so that the conventional method shown in Japanese Patent Laid-Open No. 253119/1993 is shown. The situation of dust suction will be described with reference to a perspective view showing the bottom shape of the suction tool of the electric vacuum cleaner. Reference numeral 8 denotes a front opening for sucking dust on the front side of the suction tool body.
It is composed of a gap of only the height of. Reference numeral 9 is a side opening for sucking dust on the side surface of the suction tool body 12. Each opening is connected to the suction port 5 through the suction air passage 6. As described above, the suction tool of the conventional vacuum cleaner is configured to suck dust from the front and side surfaces of the suction tool body 12.

Next, the operation will be described. In FIG. 6, the dust scattered on the floor enters between the fixed blade 13a and the movable blade 13b provided in front and behind the suction tool body 12 by the cleaning operation of the suction tool, rides on the suction air flow and is sucked from the suction port 5 , Through the hose, and deposits in the dust collector of the vacuum cleaner. The bumper 3 provided at the front part of the suction tool body 12 elastically deforms when it hits against a wall during cleaning and pushes the operating blade 15, whereby the movable blade 13b rotates, and the lower edge of the movable blade 13b moves away from the floor surface to suck. A suction airflow is generated in front of the tool body 12 to suck dust near the wall.

[0005]

Since the suction tool of the conventional vacuum cleaner is abnormally constructed, when the suction tool body 12 is used on a Joutan, the movable blade 13b becomes the hair of the Joutan. There is a problem that it is caught and does not work. In addition, as shown in FIG.
Although it is possible to construct 3b away from the floor so that it does not get caught by the hair of the Joutan, the opening area with the floor that has been opened in advance becomes even larger, and the suction wind speed decreases, so that dust is absorbed. There was a problem that leftovers would occur.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to improve the dust removal performance on the wall of the floor brush on both the surface of the Joutan and the floor surface.

[0007]

A suction tool for an electric vacuum cleaner according to the present invention is provided with a front opening for sucking dust from the front side of the suction tool body, which is provided at a bottom portion of the suction tool body facing the floor, and the suction tool. It is provided with a side opening for absorbing dust from a side portion of the main body, and an opening opening / closing means for mechanically opening / closing one of the front opening and the side opening.

Further, a front opening provided at a bottom portion of the suction tool body facing the floor, for absorbing dust from the front side of the suction tool body, and a side surface opening for absorbing dust from the side part of the suction tool body,
A suction port for sucking dust from the opening through a suction air passage, a lever operably provided with a handle on the outside of the main body of the suction tool, and the lever which is engaged with the lever and interlocks with the operation of the lever. An opening portion opening / closing means including a side surface valve for opening / closing the air passage with respect to the side surface opening portion is provided.

Further, there is provided obstacle detection means for detecting an obstacle in the room including a wall with which the suction tool abuts upon movement of the suction tool, and opening opening / closing means which operates in conjunction with the obstacle detection means. It is a thing.

Further, it is provided with a means for expanding the opening area of the other opening at the same time as closing one opening.

[0011]

The suction tool of the vacuum cleaner according to the present invention is provided with opening opening / closing means for mechanically opening and closing the front opening and the side opening provided at the bottom of the suction tool main body, and either one of the openings is closed. As a result, the air volume of the other opening is increased.

Further, a front opening and a side opening provided at a bottom portion facing the floor of the suction tool body, a suction port for sucking dust from the opening through an air passage, and a handle on the outside of the suction tool body. The side opening part is provided with an operably provided lever and an opening part opening / closing means that is engaged with the lever and opens / closes the air passage with respect to the side opening part in conjunction with the operation of the lever. The intake amount of is cut off, and the air volume of the front opening is increased.

Further, by providing the obstacle detecting means for detecting an obstacle in the room including the wall abutting by the movement of the suction tool, and the opening / closing means for operating in cooperation with the obstacle detecting means, the wall is provided. The opening opening / closing means is automatically operated without manually operating the opening opening / closing means one by one when the suction tool comes close to.

Further, by providing a means for expanding the opening area of the other opening at the same time as closing one opening,
The opening area of the opening on the open side can be further expanded, further increasing the air volume.

[0015]

【Example】

Example 1. An embodiment of the present invention will be described below. FIG. 1 is an explanatory view showing the structure of a suction tool of an electric vacuum cleaner according to an embodiment of the present invention, and FIG. 2 is a bottom view of the suction tool of FIG. 1 seen from the floor. 12 in FIG. 1 and FIG.
Is a main body of the suction tool, and a front opening 8 and a side opening 9 are provided on the lower surface, and the opening area with the floor is such that even if the upper end of the front opening 8 approaches the floor depending on the condition of the floor. Sufficiently secured to absorb the debris. The front opening 8 and the side opening 9 have substantially the same opening area and suck dust substantially evenly. Reference numeral 10 denotes a side valve that opens and closes the side opening 9. When the handle 11a of the lever 11 is moved in the arrow direction, the inclined surface 16 of the lever 11 pushes the side valve 10 downward. Then, the side valve 10 is configured to block the suction air passage 6 that connects the side opening 9 formed in the lower case and the suction port 5, and when the lever 11 is moved in the direction opposite to the arrow, the coil spring 17 causes it to move. The side valve 10 is moved upward, and the suction air passage 6 is opened.

During normal cleaning, the side valve 10 is open and the dust is evenly sucked from the front opening 8 and the side opening 9 of the suction tool body 12, but when cleaning near an obstacle such as a wall or furniture. As shown in FIG. 3, by closing the side valve 10, the intake air from the side opening 9 is blocked, thereby increasing the air volume in the front opening 8 of the suction body 12, and thus from the front of the suction body 12. The dust absorption performance of is improved. Further, even when cleaning the Joutan with the above-mentioned suction tool, since the front opening 8 is opened from above the Joutan in advance, malfunctions due to the hair of the Joutan do not occur and the dust suction performance near the wall can be improved. It is also possible to use the side valve 10 as a front valve, and conversely close the front opening 8 by the front valve to increase the air volume of the side opening 9.

Example 2. Further, the opening and closing of the side valve 10 may be interlocked with a device that automatically detects an obstacle such as a wall or furniture. Further, the side valve 10 is closed and at the same time the front opening 8
The opening area of may be expanded. FIG. 4 is a view showing another embodiment of the suction tool of the vacuum cleaner of the present invention. 7 in the figure
Is an obstacle detecting means, which operates when hitting an obstacle such as a wall surface or furniture during cleaning to close the side valve 10 and at the same time the side valve 1
Movable blade drive means 18 that operates in conjunction with the operation of 0
Thereby, it is possible to open the movable blade 13b, increase the air volume on the front side of the suction tool body 12, and improve the dust suction performance near the wall. 5: is a figure which shows the state which is cleaning the wall edge with the suction tool in Example 2. FIG.

In the figure, the suction air volume from the side opening 9 of the suction tool body 12 is blocked by the operation of the side valve 10, and the opening area of the front opening 8 is expanded to increase the suction air volume from the front opening. Further increase. When the suction tool body 12 is separated from the wall surface, the obstacle detecting means 7 is operated by the release spring 14 and the side valve 10 and the movable blade 13b are returned to their original positions. It is also possible to improve the dust suction performance of the side opening 9 of the suction tool body 12 by providing the obstacle detecting means on the side opening 9 side.

[0019]

As described above, according to the present invention, the opening / closing means for mechanically opening / closing the front opening and the side opening provided at the bottom of the suction tool body is provided, and either one of the openings is provided. By closing, since it is possible to increase the intake air volume of the other opening, there is an effect of enhancing the dust collection capacity of the opening on the open side when necessary, for example, the floor surface near the wall, regardless of the top of the carpet, You can eliminate leftovers of garbage.

Further, a front opening and a side opening provided on the bottom of the suction tool body facing the floor, a suction port for sucking dust from the opening through the air passage, and a handle on the outside of the suction tool body. The side opening part is provided with an operably provided lever and an opening part opening / closing means that is engaged with the lever and opens / closes the air passage with respect to the side opening part in conjunction with the operation of the lever. Since the suction volume of the front opening is blocked and the air volume of the front opening can be increased, it has the effect of enhancing the dust collection capacity of the front opening when necessary. You can eliminate the leftovers.

Further, by providing the obstacle detecting means for detecting an obstacle in the room including the wall abutting by the movement of the suction tool, and the opening / closing means for operating in cooperation with the obstacle detecting means, the wall is provided. When the suction tool comes close to the above, the dust collection capacity of the opening on the obstacle side is automatically increased when necessary, without manually operating the opening opening / closing means one by one.

Further, a means for expanding the opening area of the other opening at the same time as closing one opening is provided, and by further expanding the opening area of the opening on the open side, it is possible to further increase the air volume. This has the effect of further enhancing the dust collecting capability of the side opening.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a structure of a suction tool of an electric vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a bottom view seen from the floor surface of the suction tool of FIG.

FIG. 3 is an explanatory view showing a state in which a side valve of the suction tool of the vacuum cleaner according to the embodiment of the present invention is closed.

FIG. 4 is an explanatory view showing a structure of a suction tool of an electric vacuum cleaner according to another embodiment of the present invention.

FIG. 5 is an explanatory view showing a state in which the obstacle detecting means of the suction tool of the electric vacuum cleaner according to another embodiment of the present invention operates.

FIG. 6 is a cross-sectional view showing a suction tool with a smear cleaning function of a conventional electric vacuum cleaner.

FIG. 7 is a perspective view showing a bottom surface shape of a suction tool of a conventional electric vacuum cleaner.

FIG. 8 is a cross-sectional view showing an example in which a movable blade is separated from a floor surface in a suction tool with a smear cleaning function of a conventional electric vacuum cleaner.

[Explanation of symbols]

1 lower case, 2 upper case, 3 bumper, 4 joint, 5 suction port, 6 suction air passage, 7 obstacle detection means, 8 front opening part, 9 side opening part, 10 side valve, 1
DESCRIPTION OF SYMBOLS 1 lever, 12 suction tool main body, 13a fixed blade, 13b movable blade, 14 release spring, 15 action blade, 16 lever inclined surface, 17 coil spring, 18 movable blade drive means.

Claims (4)

[Claims] 1. A front opening provided at a bottom portion of the suction tool body facing the floor, for absorbing dust from a front side of the suction tool body, a side opening for absorbing dust from a side portion of the suction tool body, and the front opening section. And an opening opening / closing means for mechanically opening or closing one of the side opening and the suction opening for an electric vacuum cleaner. 2. A front opening provided in a bottom portion of the suction tool body facing the floor, for absorbing dust from a front side of the suction tool body, a side opening for absorbing dust from a side part of the suction tool body, and from the opening section. And a suction port that sucks the dust suction of through the suction air passage,
An opening formed of a lever operably provided on the outside of the main body of the suction tool and a side valve which engages with the lever and opens and closes the air passage with respect to the side opening in cooperation with the operation of the lever. A suction tool for an electric vacuum cleaner, comprising: a part opening / closing means. 3. Obstacle detecting means for detecting an obstacle in a room including a wall with which the suction tool abuts by moving the suction tool,
The suction tool for an electric vacuum cleaner according to claim 1 or 2, further comprising an opening opening / closing means that operates in conjunction with the obstacle detecting means. 4. The suction tool for a vacuum cleaner according to claim 1, further comprising means for closing one opening and simultaneously expanding the opening area of the other opening.