JP2003144356A - Sucking port body for vacuum cleaner and vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sucking port body for a vacuum cleaner and the vacuum cleaner, in which one sucking port body is formed with two suction openings but any suction opening suitable for a cleaning place can be selectively used and lowering in suction efficiency can be prevented. SOLUTION: A bottom face suction opening 11 is opened on a bottom face 9a of a vacuum cleaner body 9, a front suction opening 12 is opened closely to the downside of a front face 9b of the cleaner body 9, and the respective openings 11 and 12 can be selectively opened by a shutter member 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port body for an electric vacuum cleaner, and more particularly, a suction port body having a bottom surface suction opening opening to the bottom surface of the main body and a front suction opening opening to the lower side of the front surface of the main body. And an electric vacuum cleaner having the suction port body.

[0002]

2. Description of the Related Art Conventionally, a suction port body for an electric vacuum cleaner has a floor,
Open on the bottom of the main body that is approximately parallel to the surface to be cleaned such as tatami mats, carpets,
A bottom suction opening for sucking dust and the like on the surface to be cleaned by negative pressure from the vacuum cleaner body is formed.

Further, in such a suction port body, the above-mentioned bottom surface suction opening is provided substantially at the center of the corner formed by the front-back direction of the bottom surface of the main body (reference of normal cleaning work) and the surface to be cleaned. Therefore, in order to solve the problem that it is relatively difficult to suck in obstacles that stand up from the surface to be cleaned, such as dust that is present on the interior walls and furniture, there is an opening closer to the lower front of the main unit than the bottom suction opening. There is known one provided with a front suction opening having a small area (for example, Japanese Patent Laid-Open No. 200-200200).
No. 1-14928).

[0004]

By the way, in the suction port body for the electric vacuum cleaner configured as described above, since one suction port body is formed with two bottom surface suction openings, the opening is opened. There is a problem that the area is large and the negative pressure is separated inside the suction port body, so that the suction efficiency is reduced.

In order to solve the above problems, the present invention has a suction port body having two bottom surface suction openings, but can prevent a decrease in suction efficiency. An object is to provide a mouthpiece and a vacuum cleaner.

[0006]

In order to achieve the object, a suction port body for an electric vacuum cleaner according to claim 1 has a bottom surface suction opening that opens to the bottom surface of the main body and a front surface that opens downward toward the front surface of the main body. The gist of the present invention is to include a suction opening and an opening / closing means for opening and closing the bottom suction opening.

The suction port body for an electric vacuum cleaner according to a second aspect of the present invention is a bottom suction opening that opens to the bottom surface of the main body, a front suction opening that opens to the lower side of the front surface of the main body, and an opening / closing that switches the opening state of each opening. The gist is to have means.

In the suction port body for an electric vacuum cleaner according to a third aspect of the present invention, the shutter member is based on a detection result of wall detection means provided on the front surface of the main body so as to detect a standing wall rising from the surface to be cleaned. The gist is to close the bottom suction opening.

The vacuum cleaner according to claim 4 is the vacuum cleaner according to claim 1.
The gist is to provide the suction port body for the electric vacuum cleaner according to any one of claims 3 to 4.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a suction port body for an electric vacuum cleaner and an electric vacuum cleaner according to the present invention will be described with reference to the drawings.

In FIG. 5, reference numeral 1 is an electric vacuum cleaner. The electric vacuum cleaner 1 includes a cleaner body 2, an electric blower 3 provided near the inside rear of the cleaner body 2, a dust collecting filter 4 provided near the inside front of the cleaner body 2, and a cleaner body 2. A bellows-shaped suction hose 5 having one end detachably connected to the front, a hand operation pipe 6 detachably connected to the other end of the suction hose 5, an extension pipe 7 detachably connected to the hand operation pipe 6, A suction port body 8 detachably connected to the tip of the extension pipe 7 is provided.

As shown in FIGS. 1 and 2, the suction port body 8 is widened in the left-right direction (standard for normal cleaning work) and the main operation tube 6 is gripped at the time of cleaning work. The main body 9 is provided with a connecting pipe 10 that allows a change in the relative angle with the extension pipe 7 so that the main body 9 is always on the surface to be cleaned.

A bottom surface suction opening 11 extending in the left-right width direction is formed on the bottom surface 9a of the main body 9. A front suction opening 12 extending in the left-right width direction is formed on the lower side of the front surface 9b of the main body 9. Incidentally, this front suction opening 12
In addition to those formed on the front surface 9b in the strict sense, those formed over the corner portion from the front surface 9b to the bottom surface 9a of the main body 9 are included. On the other hand, the main body 9 is provided with a shutter member 13 as an opening / closing means for alternately opening and closing the openings 11 and 12 according to the cleaning state.

The shutter member 13 is, as shown in FIG. 3, a shutter 15 biased by a spring 14 so as to normally close the front suction opening 12, and the shutter 15.
A shaft member 16 having both ends fixed to a side wall surface (inner wall) of the main body 9 (not shown) is provided as a rotation fulcrum. The shutter member 13 is also a wall detection member 17 as a detection means for detecting an obstacle on a surface to be cleaned such as an interior wall or furniture.
The open / closed state is automatically switched by.

The shutter 15 is a shutter portion 15a having a substantially arcuate shape convex to the outside (especially effective when a rotary cleaning member is provided).
And wall pieces 15b located at both ends of the shutter portion 15a. In this embodiment, the shutter 15 is
Not a closure, which means a substantial seal, but an action, that is,
The negative pressure action from the cleaner body 2 is suppressed by the front suction opening 12 (or the bottom suction opening 11), and the negative pressure action at the bottom suction opening 11 (or the front suction opening 12) is mainly closed. ing.

The wall detection member 17 includes an abutment member 18 for detecting an obstacle, a spring support shaft 19 provided inside the body of the abutment member 18, and a spring 20 coaxial with the spring support shaft 19. I have it.

The abutting member 18 includes a pair of abutting pieces 18a projecting from projecting windows 9c formed in front faces 9b of the main body 9 near both ends, and the inside of the main body 9 (suction) And a base piece 18b located in the room).

The base piece 18b includes a front surface 9b of the main body 9 and the main body 9
It is located between the rib 9c formed inside the. Further, a stopper 19 is provided near the rear end of the spring support shaft 19.
a is formed, the tip of the spring support shaft 19 is inserted from the rear side of the rib 9c, the spring 20 is interposed, and the tip is press-fitted into the base piece 18b, so that the abutting piece 18a is always in front. It is projected from 9b.

In the above structure, when the cleaning work is performed, as shown in FIG. 1, the abutting piece 18a is moved toward the front surface 9b by the biasing force of the spring 20 on the normal surface to be cleaned.
The shutter 15 closes the front suction opening 12 and the bottom suction opening 11 so that dust and the like on the surface to be cleaned can be sucked into the dust collecting filter 4 from the bottom suction opening 11.

On the other hand, the abutting piece 18 is abutted against an interior wall or a standing wall such as furniture.
When a is abutted, as shown in FIG. 2, the abutting piece 18a is displaced so as to be buried in the main body 9 against the bias of the spring 20 by the operation pressure in the forward direction of the main body 9, and this displacement As a result, the rear end of the spring support shaft 19 has the wall piece 15b.
The shutter 15 is rotated against the bias of the spring 14 by pressing.

As a result, the shutter 15 opens the front suction opening 12 and closes the bottom suction opening 11, so that dust or the like existing near the corner formed by the surface to be cleaned and the obstacle is brought close to the corner. The dust can be sucked into the dust collecting filter 4 through the front suction opening 12.

On the other hand, when the main body 9 is separated from the vicinity of the corner formed by the surface to be cleaned and the obstacle, the shutter 15 and the abutting member 18 are restored to their original state by the urging of the springs 14 and 20.

In the above embodiment, the shutter 15 for switching the open / close state of the bottom suction opening 11 and the front suction opening 12 is disclosed as a rotary type, but as shown in FIG. 4, it is a slide type. The shutter 25 can also be used.

In FIG. 4, the shutter 25 is made of a flexible synthetic resin or the like which is deformable and has a certain degree of shape-retaining property (a synthetic material that is not deformed by negative pressure is secured by material and wall thickness). , Are guided in rail-shaped grooves (not shown) formed at both ends inside the main body 9. Also,
An obstacle detection member 27 that slides the shutter 25 is connected to a middle portion of the shutter 25.

The detection member 27 includes a shaft-shaped abutting member 28 projecting from the front surface 9b near both ends of the main body 9, a support shaft 19 connected to a rear end of the abutting member 28, and a shaft coaxial with the support shaft 19. The spring 20 and the link member 29 that straddles between the pin 28a provided near the rear end of the abutting member 28 and the support shaft 25a provided in the middle of the shutter 25.

In such a structure, when the cleaning work is performed, as shown in FIG. 4A, the abutting member 2 is urged by the spring 20 on the normal surface to be cleaned.
8 is projected from the front surface 9b, and the shutter 25 closes the front suction opening 12 and the bottom suction opening 11, thereby sucking dust and the like on the surface to be cleaned from the bottom suction opening 11 to the dust collecting filter 4. be able to.

On the other hand, the abutting member 2 is attached to an interior wall or a standing wall such as furniture.
When 8 abuts, as shown in FIG. 4 (B), with this displacement in which the abutting member 28 is buried in the body 9 against the bias of the spring 20 by the operating pressure in the forward direction of the body 9, The pin 28a and the pin 29a slide in the elongated holes provided in the abutting member 28 and the link member 29, and
The operation of the link member 29 from (A) to FIG. 4 (B) is allowed, and the shutter 25 slides.

As a result, the shutter 25 opens the front suction opening 12 and closes the bottom suction opening 11, so that dust and the like existing in the vicinity of the corner between the surface to be cleaned and the obstacle is brought close to the corner. The dust can be sucked into the dust collecting filter 4 through the suction opening 12.

On the other hand, when the main body 9 is separated from the vicinity of the corner formed by the surface to be cleaned and the obstacle, the shutter 25 and the abutting member 28 are restored to their original state by the bias of the spring 20.

By the way, in the above embodiment, the front surface 9b
The abutting members 18, 28 are protruded from the abutting members 18, 2
Although the configuration has been disclosed in which the open states of the respective suction openings 11 and 12 can be switched when 8 comes into contact with an interior wall or a standing wall such as furniture, the shutters 15 and 25 are opened and closed by a solenoid or the like, and infrared rays are emitted. A known approach sensor (obstacle sensor) such as a sensor or an ultrasonic sensor may be provided, and the solenoid or the like may be driven based on the detection result of the approach sensor. Further, it is also possible to provide an opening changeover switch (not shown) on the hand operation pipe 6 and drive a solenoid or the like by operating this opening changeover switch to switch the opening state of each of the suction openings 11 and 12. Furthermore, when this manual type (can be used together with the automatic type), the suction opening 1
It is also possible to use 1 in the closed state and the bottom suction opening 11 in the open state when sucking relatively large dust.

Further, the scope of application of the suction port body of the present invention, such as the suction port body of the type in which the rotary cleaning body (not shown) is provided inside the main body 9 or the circulation type vacuum cleaner, is limited to the above-mentioned embodiment. It is not something that will be done.

As described above, according to the suction port body for the electric vacuum cleaner according to the first aspect of the present invention, the bottom suction opening 11 is closed and the front suction opening 12 is opened to form the obstacle and the surface to be cleaned. Dust around the corners can be efficiently sucked.

Further, according to the suction port body for the electric vacuum cleaner of the second aspect, the opening states of the openings 11 and 12 can be switched alternately, so that, for example, when cleaning the central portion of the room or the like. The front suction opening 12 is closed to open the bottom suction opening 11, and when cleaning a corner such as a corner of a room, the front suction opening 12 is opened to close the bottom suction opening 11. As a result, the suction efficiency can be prevented from lowering and cleaning can be performed.

According to the suction port body for the electric vacuum cleaner of the third aspect, when the wall detecting member 17 as the detecting means detects, for example, when cleaning a corner such as a corner of a room, the user is conscious. Without doing so, it is possible to prevent the suction efficiency from being lowered automatically for cleaning.

According to the vacuum cleaner of the fourth aspect, the suction port body for the vacuum cleaner according to any one of the first to third aspects is provided, so that the state of the surface to be cleaned can be adjusted. Effective use of the bottom suction opening can be realized.

[0036]

As described above, according to the present invention,
It is possible to provide a suction port body for an electric vacuum cleaner and an electric vacuum cleaner that prevent a decrease in suction efficiency.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a suction port body for an electric vacuum cleaner according to a first embodiment of the present invention, showing a state in which an ordinary surface to be cleaned is being cleaned.

FIG. 2 is likewise a vertical cross-sectional view of the suction port body in a state where the surface to be cleaned near the wall is being cleaned.

FIG. 3 is likewise an exploded perspective view of a shutter member and a wall detection member.

FIG. 4 shows a suction port body for an electric vacuum cleaner according to a second embodiment of the present invention, (A) is a vertical cross-sectional view of a main part of the suction port body in a state in which a surface to be cleaned is normally cleaned, (B) is a longitudinal cross-sectional view of the main part of the suction port body in a state where the surface to be cleaned near the wall is being cleaned.

FIG. 5 is a perspective view of the electric vacuum cleaner.

[Explanation of symbols]

1 ... vacuum cleaner 8 ... Suction mouth 9 ... Main body 9a ... bottom surface 9b ... Front 11 ... Bottom suction opening 12 ... Front suction opening 13 ... Shutter member 15 ... Shutter 17 ... Wall detection member

Claims (4)

[Claims] 1. An electric vacuum cleaner comprising: a bottom suction opening that opens to the bottom surface of the main body; a front suction opening that opens toward the lower side of the front surface of the main body; and an opening / closing means that opens and closes the bottom suction opening. Suction mouth. 2. A suction device for an electric vacuum cleaner, comprising: a bottom suction opening that opens to the bottom surface of the main body; and an opening / closing means that selectively opens a front suction opening that opens downward toward the front surface of the main body. Mouth. 3. The shutter member closes the bottom surface suction opening when the detecting means provided on the front surface of the main body detects an obstacle so as to detect an obstacle on the surface to be cleaned, and the front surface of the shutter member is closed. The suction opening for a vacuum cleaner according to claim 1 or 2, wherein the suction opening is opened. 4. An electric vacuum cleaner comprising the suction port body for an electric vacuum cleaner according to any one of claims 1 to 3.