JP2000225079A - Suction port body for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction port body for a vacuum cleaner capable of improving suction efficiency, being lightweight and compact, capable of improving operability and capable of reducing a burden to a user. SOLUTION: A suction port body for a vacuum cleaner is provided with a body case 2 having a suction port opening toward a surface to be cleaned, a first pipe 5 connected to the body case 2 so as to be movable in the D1 direction and a second pipe 6 rotatably connected in the D2 direction to the first pipe 5. Then, an air current passage inside of the first/second pipes 5, 6 is arranged in an almost straight line when viewed from a side surface, and a sliding part 5a of the first pipe 5 is arranged inside the almost rectangular body case 2 in a plan view.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port for a vacuum cleaner, and more particularly to a suction port for a vacuum cleaner capable of changing a direction of a main body case with respect to a moving direction to clean a gap.

[0002]

2. Description of the Related Art FIG. 19 shows a conventional suction port for a vacuum cleaner. The suction port body 1 has a first pipe 5 rotatably supported in a direction indicated by an arrow D1 on a connecting portion 2a of the main body case 2, and a second pipe 6 supported rotatably in a direction indicated by an arrow D2 on the first pipe 5. Have been. The second pipe 6 has a long extension pipe 7
Is connected, and the air is guided to the main body of the vacuum cleaner.

[0003] Therefore, the suction pipe 1 is formed by the first pipe 5.
Can be changed when the first pipe 5 is rotated in the direction D1 so that the extension pipe 7 is substantially upright. Is rotated in the direction D2, so that the elevation angle of the extension pipe 7 when the suction port 1 is moved in the direction of arrow C can be changed by the second pipe 6.

[0004] Wheels 9 are provided on both side surfaces of the connecting portion 2a of the main body case 2, so that the suction port body 1 can be rolled on the floor surface and moved. A suction port (not shown) is provided on the bottom surface of the main body case 2, and an arrow A1 is formed from the suction port.
The intake air taken in the direction is indicated by an arrow A in the direction of the connecting portion 2a.
2 and the first and second pipes 5 and 6 are indicated by arrows A
As shown in 3, A4, A5, the vacuum cleaner is reached through the extension pipe 7.

At the time of normal cleaning, as shown in FIG. 20A, the first and second pipes 5 and 6 are arranged in a straight line when viewed from the top, and the suction port 1 is moved in the direction of arrow B. It is moved so that dust is absorbed. Then, when cleaning a narrow portion such as a gap between furniture, the second pipe 6 is rotated as shown in FIG.
Are moved to collect dust.

[0006]

However, in such a suction port for a vacuum cleaner, the connecting portion 2a and the first and second pipes 5, 6 protrude in the depth direction (B direction) of the suction port 1. As a result, the depth W1 of the suction port body 1 becomes larger than the depth W2 of the suction port 2b, which hinders the cleaning of the gaps, and increases the weight of the suction port body 1 to increase the weight, thereby burdening the user. Was bigger. Further, since the air flow path is bent between the inside of the first pipe 5 and the inside of the second pipe 6, there is a problem that the pressure loss of the intake air is large, the suction efficiency is reduced, and the noise is increased.

The rotation range of the first pipe 5 in the direction D1 is small, and the elevation angle of the extension pipe 7 is about 30 ° to 70 °. For this reason, it becomes difficult to insert the suction port body 1 to the back when cleaning a place with a small gap between the floor and the floor, such as a bed, and the operability is deteriorated. Further, the wheel 9 does not roll in the direction of the arrow C, so that the operability is deteriorated, and the slipping of the wheel 9 damages flooring and the like.

An object of the present invention is to provide a lightweight and compact suction port for a vacuum cleaner while improving the suction efficiency. Another object of the present invention is to provide a vacuum cleaner suction opening body that can improve operability and reduce the burden on the user.

[0009]

According to a first aspect of the present invention, there is provided a body case having a suction opening opening toward a surface to be cleaned, and a suction airflow from the suction opening passing through the body case. A first pipe having a first air flow path and rotatably connected to the main body case around a rotation axis parallel to a longitudinal direction of the suction port, and a second air flow path communicating with the first air flow path. And a second pipe rotatably connected to the first pipe. A sliding portion of the first pipe, which slides with the main body case with the rotation of the first pipe, has a substantially rectangular shape in plan projection. It is characterized in that it is arranged inside the main body case.

[0010] According to this configuration, the intake portion sucked from the suction port is provided in the first pipe which can slide in the depth direction by sliding the sliding portion in the substantially rectangular main body case in a plan view. Dust is sucked through the first air passage and the second air passage in the second pipe that can be inclined in the longitudinal direction of the main body case.
Then, by rotating the first and second pipes, the width in the depth direction of the suction port body can be reduced.

According to a second aspect of the present invention, in the suction opening for a vacuum cleaner described in the first aspect, the first and second air passages are arranged substantially in a straight line in a side projection, and
The rotation axis of the pipe is substantially perpendicular to the first air flow path.

According to this configuration, the intake air sucked from the suction port is provided in the first air flow path in the first pipe which can be inclined in the depth direction of the suction port, and in the second pipe which can be inclined in the longitudinal direction of the suction port. Dust is absorbed through the second air passage. Then, the second pipe rotates and inclines about a rotation axis substantially perpendicular to the first air flow path so that the first and second air flow paths are always arranged substantially in a straight line when viewed from the side. .

According to a third aspect of the present invention, there is provided a suction port for a vacuum cleaner according to the first or second aspect, wherein
It is characterized in that the air passage rotates from substantially parallel to substantially perpendicular to the surface to be cleaned.

According to this structure, the intake air sucked from the suction port can be inclined in a depth direction of the suction port from substantially parallel to substantially perpendicular to the surface to be cleaned, and the first air flow path in the first pipe, and the suction port. Of the second pipe in the second pipe which can be inclined in the longitudinal direction of the second pipe.
Dust is absorbed through the air passage.

According to a fourth aspect of the present invention, in the suction opening for a vacuum cleaner according to the third aspect, the rotation axis of the second pipe is disposed substantially at the center in the longitudinal direction of the main body case. When the first pipe is made substantially perpendicular to the surface to be cleaned, the first and second pipes are made smaller than the width in the depth direction of the main body case in planar projection.

According to this structure, the intake air sucked from the suction port receives the first air flow path in the first pipe which can be inclined in the depth direction of the main body case, and the longitudinal direction centering on the substantially center of the main body case in the longitudinal direction. The dust is sucked through the second air flow path in the second pipe that can be tilted to the right. Then, when the first pipe is turned upright, the suction port body fits in a space within the width in the depth direction of the main body case, so that the narrow gap can be cleaned.

According to a fifth aspect of the present invention, there is provided the suction port for a vacuum cleaner according to the third or fourth aspect, wherein
When the air flow path is substantially parallel to the surface to be cleaned, the rotation of the second pipe is regulated.

According to this structure, the intake air sucked from the suction port is inclined in the depth direction of the suction port from substantially parallel to substantially perpendicular to the surface to be cleaned, and the first air flow path in the first pipe, and the suction port. Of the second pipe in the second pipe which can be inclined in the longitudinal direction of the second pipe.
Dust is absorbed through the air passage. The second and the third air flow paths are arranged such that the first and the second air flow paths are always substantially aligned when viewed from the side.
The pipe is inclined, and the second pipe is not inclined when the first air flow path is substantially parallel to the surface to be cleaned.

Further, the sixth invention is characterized in that the third to fifth embodiments
In the suction port body for a vacuum cleaner described in any one of the inventions, the first air flow path has a maximum sectional area in a predetermined angle range with respect to the surface to be cleaned.

According to this structure, the intake air sucked from the suction port is inclined in the depth direction of the suction port from substantially parallel to substantially perpendicular to the surface to be cleaned, and the first air flow path in the first pipe, and the suction port. Of the second pipe in the second pipe which can be inclined in the longitudinal direction of the second pipe.
Dust is absorbed through the air passage. The cross-sectional area of the first air flow path is maximized when the first air flow path has an inclination angle at which the first pipe is normally cleaned and has a predetermined angle range.

According to a seventh aspect of the present invention, in the suction port body for a vacuum cleaner according to the sixth aspect, the sliding portion slides on an inner surface of the main body case to form an arc-shaped cross section. The first pipe is provided on the main body case such that the first pipe is rotated by an engagement member having an arcuate cross-section and interlockingly engaged with the first pipe in accordance with the rotation angle of the first pipe. The opening is closed.

According to this configuration, when the first pipe is rotated, the sliding portion having a circular cross section slides on the inner surface of the main body case. An engagement member having an arcuate cross section provided on the inner surface of the sliding portion engages with and moves with the sliding portion according to the rotation angle of the sliding portion. Then, an opening provided in the main body case so that the first pipe rotates is closed by the engaging member and the sliding portion.

According to an eighth aspect of the present invention, in the suction opening for a vacuum cleaner according to the seventh aspect, the engaging member is disposed on an inner surface of the engaging member, and the engaging member is arranged in accordance with a rotation angle of the first pipe. It is characterized by having a fixing member having an arc-shaped cross section that engages with the member.

According to this configuration, when the first pipe is rotated, the sliding portion having an arc-shaped cross section slides on the inner surface of the main body case. An engagement member having an arcuate cross section provided on the inner surface of the sliding portion engages with and moves with the sliding portion according to the rotation angle of the sliding portion. An arc-shaped fixing member provided on the inner surface of the engagement member engages with the engagement member in accordance with the rotation angle of the sliding portion to regulate the rotation of the engagement member. Then, the opening provided in the main body case so that the first pipe rotates can be closed by the engaging member, the sliding portion, and the fixing member.

According to a ninth aspect of the present invention, in the suction opening for a vacuum cleaner according to the seventh or eighth aspect, a shield is provided at a front end of the engaging member to close a gap with the main body case. It is characterized by having a section.

According to this configuration, when the first pipe is rotated, the sliding portion having an arc-shaped cross section slides on the inner surface of the main body case. An engaging member having an arc-shaped cross section provided on the inner surface of the sliding portion engages with and interlocks with the sliding portion according to the rotation angle of the sliding portion, and the shielding portion slides on the inner surface of the main body case. It moves to close the gap between the engaging member and the main body case.

Further, a tenth invention is directed to the first or second embodiment.
Wherein the wheel provided on the bottom surface of the main body case and rolling on the surface to be cleaned is rotatable around an axis perpendicular to the surface to be cleaned. And

According to this configuration, the intake air sucked from the suction port is provided in the first air flow path in the first pipe which can be inclined in the depth direction of the suction port, and in the second pipe which can be inclined in the longitudinal direction of the suction port. Dust is absorbed through the second air passage. When the first pipe is inclined, the suction port body is moved in the depth direction by the wheels to perform normal cleaning, and when the first pipe is substantially upright and the second pipe is inclined, the wheel is moved. The direction of the suction port is changed in the longitudinal direction, and the gap is cleaned.

Furthermore, an eleventh invention is characterized in that, in the suction port for a vacuum cleaner described in the tenth aspect, the wheels can be moved in parallel to a surface to be cleaned.

According to this configuration, the intake air sucked from the suction port is provided in the first air flow path in the first pipe that can be inclined in the depth direction of the suction port, and in the second pipe that can be inclined in the longitudinal direction of the suction port. Dust is absorbed through the second air passage. When the first pipe is inclined, the suction port body is moved in the depth direction by the wheels to perform normal cleaning, and when the first pipe is substantially upright and the second pipe is inclined, the wheel is moved. Is changed while moving in parallel, and the suction opening body is moved in the longitudinal direction to clean the gap.

The twelfth invention is directed to the tenth or the first invention.
The suction port body for an electric vacuum cleaner according to 1, wherein the wheels are arranged inside the main body case in a planar projection.

According to this structure, the intake air sucked from the suction port is provided in the first air passage in the first pipe which can be inclined in the depth direction of the suction port, and in the second pipe which can be inclined in the longitudinal direction of the suction port. Dust is absorbed through the second air passage. When the first pipe is inclined, the suction port body is moved in the depth direction by the wheels to perform normal cleaning, and when the first pipe is substantially upright and the second pipe is inclined, the wheel is moved. The direction of the suction port is changed in the longitudinal direction, and the gap is cleaned. When the suction opening body collides with a wall or the like during cleaning, the wheels disposed inside the main body case are prevented from colliding in plan view.

The thirteenth invention is directed to the tenth to first aspects.
In the suction port body for a vacuum cleaner according to any one of the second inventions, it is preferable that a step portion that opens to an outer peripheral surface of the body case is provided on a bottom surface of the body case, and the wheels are installed on the step portion. Features.

According to this configuration, the intake air sucked from the suction port is provided in the first air passage in the first pipe which can be inclined in the depth direction of the suction port, and in the second pipe which can be inclined in the longitudinal direction of the suction port. Dust is absorbed through the second air passage. Then, when the first pipe is inclined, the suction port is moved in the depth direction by wheels arranged on a stepped portion opened on the outer peripheral surface of the main body case, and normal cleaning is performed. When the second pipe is straightened, the wheels turn and the suction opening is moved in the longitudinal direction to clean the gap.

According to a fourteenth aspect, in the suction body for a vacuum cleaner according to any of the tenth to thirteenth aspects, a pair of support members for supporting the axle on both side surfaces of the wheel. And a reinforcing member that bridges before and after the wheel.

According to this configuration, the intake air sucked from the suction port is provided in the first air flow path in the first pipe which can be inclined in the depth direction of the suction port, and in the second pipe which can be inclined in the longitudinal direction of the suction port. Dust is absorbed through the second air passage. Then, when the first pipe is inclined, it is moved in the depth direction by wheels reinforced by the reinforcing member to perform normal cleaning, and when the first pipe is substantially upright and the second pipe is arranged with inclination. The wheels change direction and the suction opening is moved in the longitudinal direction to perform clearance cleaning.

Further, a fifteenth aspect of the present invention is directed to the suction port having a main body case having a suction opening opening toward the surface to be cleaned, and a sliding portion having an arc-shaped cross section which slides on the inner surface of the main body case. A suction pipe rotatably connected to the main body case so as to allow a suction airflow from the suction pipe to pass therethrough, and a rotating brush disposed inside the sliding portion and rotating.

According to this configuration, the sliding portion having an arc-shaped cross section slides on the inner surface of the main body case to determine the rotational position of the suction pipe, and the rotating brush disposed inside the sliding portion is rotated by the suction airflow. The suction opening body is moved back and forth while cleaning is performed.

According to a sixteenth aspect of the present invention, in the suction port body for a vacuum cleaner according to the fifteenth aspect, an inlet for rotating a rotating brush is provided in the main body case, and an inner surface of the sliding portion is provided on the inner surface of the sliding portion. The main body such that the suction pipe is rotated by an engagement member having an arc-shaped cross section and slidably engaged with the suction pipe according to a rotation angle of the suction pipe and the sliding portion. In the suction opening body for a vacuum cleaner that closes an opening provided in a case, a hole communicating with the inflow port is provided in the engagement member.

According to this structure, the sliding portion having an arc-shaped cross section slides on the inner surface of the main body case to determine the rotational position of the suction pipe, and the opening is closed by the engaging member and the sliding portion. The rotating brush arranged inside the sliding portion is rotated by suction airflow from an inflow port provided in the main body case to the rotating brush through a hole provided in the engaging member, and is rotated by the rotating brush. The suction port body is moved back and forth while cleaning up, and cleaning is performed. Further, a seventeenth invention is directed to a main body case having a suction opening opening toward a surface to be cleaned,
A first pipe having a first air flow path through which the suction air flow from the suction port passes and connected to the main body case so as to be rotatable around a rotation axis parallel to a longitudinal direction of the suction port; A second pipe having a second air flow path communicating with the path and rotatably connected to the first pipe, wherein the air flow in the air flow path of the first pipe does not leak outside to the air flow path of the second pipe. It is characterized by having a guiding shutter.

According to this configuration, the rotation angle of the second pipe can be made large, and the air flow path can be reliably secured, so that noise generation can be suppressed.

According to an eighteenth aspect of the present invention, in the suction port for a vacuum cleaner according to the seventeenth aspect, the operation of the shutter is interlocked with the rotation of the second pipe. .

According to a nineteenth aspect of the present invention, in the suction opening for a vacuum cleaner according to the seventeenth or eighteenth aspect, a regulating means for regulating an inadvertent rotation of the second pipe with respect to the first pipe. It is characterized by comprising.

According to this configuration, when used, the first
It is possible to prevent the suction opening body from swaying through the pipe and the second pipe.

Further, a twentieth invention is characterized in that, in the suction port for a vacuum cleaner described in the nineteenth invention, the regulating means is constituted by a spring and a steel ball.

Furthermore, a twenty-first aspect of the present invention is the suction port for a vacuum cleaner according to the nineteenth or twentieth aspect, wherein a felt or the like for preventing dust and dirt such as sand from entering the regulating means. It is characterized by comprising dust-proof means comprising:

According to this configuration, it is possible to reliably prevent the intrusion of dust through the restricting means from the outside.

According to a twenty-second aspect of the present invention, in the suction body for a vacuum cleaner according to the seventeenth aspect, an air outlet is provided between the rubber blades of the rotating brush of the main body case. I have.

According to this configuration, the effect of blowing air to the cleaning surface can be expected, and cleaning can be performed more efficiently.

According to a twenty-third aspect of the present invention, in the suction opening for a vacuum cleaner according to the twenty-second aspect, a play is provided on a detachable knob supporting portion for facilitating attachment and detachment of the rotary brush from the main body case. Is provided.

According to this configuration, the rotating brush can be easily attached to and detached from the main body case.

[0052]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. For convenience of explanation, the same members as those in FIGS. 19 and 20 of the conventional example are denoted by the same reference numerals. 1 and 2
1 is a schematic perspective view and a bottom view showing a suction port for a vacuum cleaner according to an embodiment of the present invention. Suction port body 1 has suction port 4 on the bottom.
The main case 2 is formed from a lower case 4 provided with a, an upper case 3 to which the first pipe 5 is connected, and a bumper 8 attached between the upper case 3 and the lower case 4. The bumper 8 prevents the occurrence of scratches when the inlet body 1 collides with a wall, furniture, or the like.

A second pipe 6 is connected to the first pipe 5, and a long extension pipe 7 is connected to the second pipe 6 so as to guide intake air to the vacuum cleaner main body.
Wheels 9 are provided at four places on the bottom surface of the lower case 4 so as to roll on the floor and move the suction port body 1. As shown in the front sectional view of FIG. 3, a rotary brush 10 is provided inside the suction port body 1, and an inflow port 3d through which a suction air flow that applies a rotational force to the rotary brush 10 flows (see FIG. 1). Are provided on the upper case 3.

The first pipe 5 is rotatable in the direction of arrow D1 in the opening 3b by sliding the sliding portion 5a having an arcuate cross section on the inner surface of the guide portion 3a having an arcuate cross section of the upper case 3. Supported. The second pipe 6 is rotatably supported in the direction of arrow D2 by the sliding portion 6a sliding on the inner surface of the support portion 5b provided on the first pipe 5.

Accordingly, the elevation angle of the extension pipe 7 when the suction port 1 is moved in the direction of arrow B (depth direction) by the first pipe 5 can be changed. As shown in FIG.
When the suction port body 1 is moved in the direction of the arrow C (longitudinal direction) by the second pipe 6 (hereinafter referred to as "vertical use of the suction port body"), the elevation angle of the extension pipe 7 can be changed. I have. In FIG. 4, reference numeral 6c denotes a rotation shaft of the second pipe 6.

In FIG. 3 described above, the intake air taken in from the suction port 4a in the direction of arrow E1 advances in the direction of the first pipe 5 as indicated by arrow E2, and the first and second pipes 5, 6 are moved in the direction of arrow E3, As in E4, it reaches the main body of the vacuum cleaner through the extension pipe 7. At this time, the suction port body 1
When using in a normal direction (when moving and using in the direction B in FIGS. 1 and 4), the first and second pipes 5, 6
The first and second pipes 5, 6 are connected so that the air flow paths (E3, E4) of the suction airflow passing through the inside are arranged in a straight line. The rotation shaft 6c of the second pipe 6 is connected to the first pipe 5
It is made to be perpendicular to the air flow path (E3) inside.

Therefore, when the frequently used suction port body 1 is used in the normal direction (see FIG. 1), the air flow path of the suction air flow does not bend, the pressure loss is reduced and the suction efficiency is improved. And noise can be reduced. When viewed from the side as shown in FIG. 5, even if the second pipe 6 is rotated around the rotation axis 6 c with respect to the first pipe 5, the inside of the first and second pipes 5 and 6 is always Since the air passages (E3, E4) are arranged in a straight line, the second pipe 6 rotates in a plane perpendicular to the floor when the first pipe 5 is erected. I have.

FIG. 6 shows a top view with the upper case 3 removed. The sliding portion 5a of the first pipe 5 is disposed inside the substantially rectangular main body case 2 as viewed from above, and the first pipe 5
Of the main body case 2 at the approximate center of the depth W3. Therefore, since the protruding connecting portion 2a (see FIG. 20) unlike the conventional example is not required, the depth W3 of the suction port body 1 can be reduced to reduce the size and weight, and the vertical length of the suction port body 1 can be improved. Connecting part 2 when used
The operability can be improved without a becoming an obstacle.

The rotation shaft 6c (see FIG. 4) of the second pipe 6 is arranged substantially at the center of the suction opening 1 in the longitudinal direction. With this configuration, when the suction port body 1 is used vertically, a force is applied to substantially the center of the main body case 2.
The balance at the time of moving back and forth can be improved, the fluctuation of the suction port body 1 can be suppressed, and the operability is improved. In the figure, when the first pipe 5 is arranged perpendicular to the floor surface, the first and second pipes 5 ′ and 6 ′ indicated by broken lines are set so as to fit within the range of the main body case 2 in the depth direction. Therefore,
It is possible to clean a narrow gap up to the depth W3 of the main body case 2.

In FIG. 5 and FIG. 5 described above, the first pipe 5 is substantially parallel to the floor surface, so that when the gap under the bed is narrow, the suction port 1 can be easily moved to the back. Insertion can be performed, and operability can be improved. Accordingly, the first pipe 5 is rotatable from substantially parallel to substantially vertical with respect to the floor surface, and such a rotating mechanism is configured as shown in a side sectional view of FIG.

As described above, the sliding portion 5a of the first pipe 5 slides on the inner surface of the guide portion 3a of the upper case 3 so that the first pipe 5 can rotate. To rotate the first pipe 5 as shown in the figure from a position substantially parallel to the floor surface to a position substantially perpendicular to the dashed line 5 ', the opening 3 of the upper case 3 is required.
It is necessary to open b widely.

The length L1, L of the front and rear portions of the sliding portion 5a
Since the rotation of the upper case 3 is determined by the rotation of the upper case 3 and the lower case 4, a hole is formed between the opening 3 b and the sliding portion 5 a above the main body case 2, such as the G portion. . When the first pipe 5 is turned upright, a hole is formed behind the body case 2 (to the right in the figure).

In order to close this hole (for example, part G) so as not to communicate with the air flow path of the suction airflow from the suction port 4a, the engaging member 11 and the fixing member 12 as shown in the exploded perspective view of FIG.
Is provided. The fixing member 12 having an arc-shaped cross section has a fixing member 1 having an elastic force like a leaf spring in a state where the fixing portion 12a 'at one end is engaged with the engaging portion 4d of the lower case 4 as shown in FIG.
The fixing member 12 is firmly fixed by pulling the fixing portion 12a at the other end into the projecting portion 4c provided on the lower case 4 while pulling the fixing member 2. The engaging member 11 having an arc-shaped cross section slides on the inner surface of the sliding portion 5 a of the first pipe 5 and is arranged so as to slide on the outer surface of the fixing member 12.

At this time, the connecting portion 2 shown in FIG.
Therefore, the sliding portion 5a cannot be provided with the circular side plate 13 because it does not have a. Therefore, the guide member 3a of the upper case 3 and the fixing member 12 fixed to the lower case 4 are provided so that smooth rotation can be obtained without deformation of the respective arc-shaped cross sections of the sliding portion 5a and the engaging member 11. , So that the sliding portion 5a and the engaging member 11 are held therebetween.

The engaging member 11 and the fixing member 12 are
1e, 12e and openings 11c, 12c,
The suction airflow passes through the openings 11c and 12c and the first pipe 5
It is designed to progress within. The flanges 12f provided on both sides of the fixing member 12 come into contact with the inner surface of the guide portion 3a of the upper case 3, and arrows F1, F
As shown in FIG. 2, a flow passage communicating from the side of the engaging member 11 to the opening 3b through the outer surface of the engaging member 11 is shielded to prevent leakage of intake air.

The engaging claws 11b, 11d provided on the engaging member 11 are provided in accordance with the rotation angle of the first pipe 5.
The engagement claws 5f, 5 provided on the sliding portion 5a (see FIG. 7)
By engaging with g, the engaging member 11 rotates. Also, the engaging claws 11 f and 11 g provided on the engaging member 11 are
By engaging with 2b, 12d (see FIG. 7), rotation of the engaging member 11 is restricted.

The engaging member 11 when the first pipe 5 rotates.
Will be described with reference to FIGS. 9, 10 and FIG. First, when the first pipe 5 shown in FIG. 7 is substantially parallel to the floor surface, the engaging claw 5f provided on the sliding portion 5a and the engaging claw 11b provided on the engaging member 11 are engaged. Thus, the engaging member 11 is rotated clockwise to close the upper part of the opening 3b of the upper case 3.

At this time, the portion of the engaging claw 11g of the engaging member 11 abuts on the fixing member 12, and the engaging claw 11f of the engaging member 11 engages with the engaging claw 12b of the fixing member 12. The rotation of the joint member 11 is restricted. In addition, the air flow inflow portion 5h of the first pipe 5 includes the engaging member 11 and the fixing member 12
Partially obstructed by

When the first pipe 5 is rotated counterclockwise, the air flow path in the air flow inlet 5h gradually widens, and when the inclination angle of the first pipe 5 shown in FIG. The engaging claw 5g provided on the moving part 5a and the engaging member 11
Is engaged with the engaging claw 11d provided in the airflow inflow portion 5
The air flow path at h has the largest cross-sectional area. At this time, the upper portion 3b ′ of the opening 3b of the upper case 3 is closed by the sliding portion 5a, and the rear portion 3b ″ is closed by the engaging member 11 and the fixing member 12.

When the first pipe 5 is further rotated in the counterclockwise direction, the air flow path in the air flow inflow portion 5h rotates while maintaining the maximum sectional area, and as shown in FIG. The rotation of the first pipe 5 is restricted by abutting on the end face 3c of the opening 3b of the third pipe 3. At the same time, the engagement claw 12d provided on the fixing member 12 and the engagement claw 1 provided on the engagement member 11
1g is engaged, and the rotation of the engagement member 11 is regulated.

Next, from the state shown in FIG.
Is rotated clockwise, the air flow path in the air flow inflow portion 5h is gradually narrowed by the engagement member 11, and
When the inclination angle of the pipe 5 is about 45 °, the air flow path in the air flow inflow portion 5h has a minimum sectional area. Further clockwise
When the pipe 5 is rotated, the air flow path in the airflow inflow portion 5h rotates while maintaining the minimum cross-sectional area, and the first pipe 1 comes into contact with the lower case 4 to be in the state shown in FIG.

With the above configuration, the first pipe 5
Can be rotated from substantially parallel to substantially perpendicular to the floor surface. And the frequently used suction port body 1
Is moved in the direction B shown in FIG. 1, and the more frequently used first pipe 5 has an inclination angle of about 45 degrees.
When using in the range of ゜ to 60 ゜, once the first pipe 5
The air flow path in the air flow inflow portion 5h can be made to have a maximum cross-sectional area by rotating the air flow after setting the air flow in a position substantially parallel to the floor surface, and the suction efficiency in the most frequently used state is increased. I have to.

Further, when the suction port body 1 is used vertically, the first
Similarly, when the inclination angle of the pipe 5 is about 90 °, the air flow path in the air flow inflow portion 5h has the maximum cross-sectional area, so that high suction efficiency can be obtained. At other angles of inclination of the first pipe 5 (for example, 30 ° to 60 °), another engagement between the engaging member 11 and the fixing member 12 is performed so that the air flow path in the airflow inflow portion 5h has a maximum sectional area. A joining member may be provided.

In FIG. 7 described above, a shielding portion 11 a is provided at the front end of the engaging member 11 so as to be in contact with the inner surface of the upper case 3. If dust or the like enters through the opening 3b of the upper case 3 and accumulates in the lower front part (H portion) of the fixing member 12, it is difficult to clean the dust and the like. Therefore, the fixing member 12 and the upper case 3 are shielded by the shielding portion 11a. To shield the gap. Accordingly, dust or the like that has entered through the opening 3b is deposited on the shielding portion 11a near the opening 3b, so that cleaning can be easily performed.

In the figure, when the first pipe 5 is substantially parallel to the floor surface, the pin 14 provided in the lower case 4 passes through the through hole 5e provided in the first pipe 5 and the second pipe 5 6
Is engaged with an engagement portion 6e having a semicircular plane shape. When cleaning the gap at the lower part of the bed, the direction in which the force is applied is deviated because the suction port body 1 is not visible, thereby preventing the main body case 2 from wobbling due to the rotation of the second pipe 6. are doing. The pins 14 and the through-holes 5e are so small that they do not cause a reduction in dust-absorbing power due to a leak of intake air.

FIG. 11 is a perspective view showing another embodiment of the engaging member 11. The difference from FIG. 8 is that the engaging member 11 is elongated in the longitudinal direction, and the elongated cylindrical surface 11e 'is provided with an elongated hole 11f. The inlet 3d of the upper case 3 (FIG. 1)
The suction airflow taken into the suction port body 1 from the suction port body 1 through the elongated hole 11f collides with the flexible body 10b (see FIG. 9) of the rotation brush 10 to rotate the rotation brush 10, and then the suction airflow. At the same time, the vehicle advances in the direction of the first pipe 5 as indicated by an arrow E2 in FIG. Then, dust on the floor surface is scraped up by the rotating brush 10a.

As a result, as in the embodiment shown in FIG. 8, the intake air taken in from the upper case 3 is blown to the flexible body 10b, and at the same time, the intake air can be taken at a position closer to the position where the intake air advances toward the first pipe 5. It can be sprayed on the flexible body 10b. The long hole 11 f is interlocked with the rotation of the first pipe 5 and slightly varies depending on the rotation direction of the first pipe 5, but is arranged at substantially the same position with respect to the first pipe 5.
Therefore, the long hole 11f can always be arranged at a position with respect to the first pipe 5 where the air can be efficiently blown to the flexible body 10b, and it is possible to always efficiently apply the rotating force to the rotating brush 10. The suction efficiency is improved.

FIG. 1 shows another configuration of the rotating mechanism portion using the first pipe 5 and the second pipe 6 shown in FIG.
This will be described with reference to FIGS.

The first pipe 5 shown in FIG. 9 is combined with the second pipe 6 as the shape of the first pipe 5 shown in FIG. 12 so as to be adjustable within the range of the angle D2 as shown in FIGS. 13 and 14. . Further, a lock mechanism (restriction means) for holding the rotational fluctuation of the suction port body 1 and the second pipe 6 to a constant rotational force is constituted by the steel ball 30 and the fixed plate 31.

The first pipe 5 has a rotation range D3 shown in FIG.
As shown in FIG. 12, the lower surface is rotatably attached to the center of rotation of the second pipe 6 by screws 33 and is covered with a cover 34. The upper surface is rotatably attached to the pipe cover 32 with a screw 35 around the center of rotation, and is fixed to the second pipe 6 with screws 36, and has a rotation structure of a rotation range D2 with a clamping structure.

In the opening of the rotation range D3 shown in FIG. 13, the left and right shutters 37a and 37b are supported by the groove 38 of the first pipe 5 and the cover 34 so as to be slidable, and are opened by adjusting the angle of the rotation range D2. The air is guided to the second pipe 6 as indicated by an arrow H.

When the second pipe 6 is rotated and tilted as shown in FIG.
Is rotated, and the shutter 37b is kept as it is, so that the air flow path and the rotation angle can be secured to the maximum.

When the second pipe 6 is tilted in the opposite direction, the shutter 37a returns to the position shown in FIG. 13 by the spring 39 and the shutter 37b is rotated at the portion A of the second pipe 6, so that the first pipe 5 The opening is closed by the shutter 37, and the suction air is guided from the suction opening 1 to the second pipe 6 without air flowing in from the outside.

Further, a steel ball 30 and a spring 40 are mounted on the first pipe 5 to maintain a predetermined rotational force and prevent the suction port 1 from wobbling, and a fixed plate 31 is mounted on the pipe cover 32. The steel ball 30 is held in the recess of the fixed plate 31 by the repulsive force of the spring 40, and the first pipe 5 and the second pipe 6 are held at a constant rotational force.

FIG. 15 is an enlarged view of the holding structure. A dust-proof felt 41 is attached to the first pipe 5 as dust-proof means for preventing a change in holding force due to intrusion of dust such as sand or the like into the steel ball 30.

With the above-described structure, the wobble of the suction port body 1 before and after use can be prevented by the steel balls 30 holding the first pipe 5 and the second pipe 6. Further, by providing the shutters 37a and 37b, the rotation range D2 can be made large and the air flow in the air flow path becomes smooth, so that noise generation can be minimized.

The rotary brush 10 shown in FIG. 12 has a brush 53 and a rubber blade 50. The rubber blade 50 transfers air flowing from the side of the upper case 3 between the adjacent rubber blades to the rubber blade 50 via the brush shaft 52. The air is blown out from a large number of holes 51.

The rotating brush 10 rotates in the direction of the arrow and scrapes the carpet surface together with the brush 53 on the front side 50a of the rubber blade 50. Then, the air discharged from the hole 51 is sprayed on the carpet surface and further scraped (swept out) by the rubber blade 50b.
Therefore, the structure is such that the effect of air blowing is further increased.

In FIG. 16, air is taken in from the upper case 3 or the lower case 4 through the intake hole 54 and discharged from the brush shaft 52 as indicated by the arrow N. A detachable button 55 for attaching and detaching the rotating brush 10 shown in FIG. 16 is sandwiched between the upper case 3 and the lower case 4, and a margin (play) 57 is provided vertically above and below the center of the shaft 56.

The lower case 4 holds the rotary brush 10 with a spring 58 for holding the detachable button 55 and has a rib 59. When the suction port body 1 receives an impact due to dropping or the like, the spring 58 overcomes the spring 58 and attempts to rotate around the shaft 56.

Further, when attaching and detaching, the attachment / detachment button 55 is pulled upward as shown by an arrow K, so that the tolerance
Since the rotational force is applied after moving once to 7, the rib 59 of the lower case is out of the rotation locus, so that it can be easily attached and detached.

Next, FIG. 17 is an exploded perspective view showing the wheels 9 of the suction port 1 of this embodiment. The wheel 9 provided with the axle 9a is a pair of support ribs 1 provided on a mounting base 16.
6c is loosely fitted in a horizontally long slot 16e. Axle 9
a may be formed integrally with the wheel 9 in order to reduce the number of parts. The mounting base 16 is provided with a shaft portion 16 a having a spring property in a radial direction, and the shaft portion 16 a is fitted into a bearing 15 integrated with a step portion 4 e provided in the lower case 4.
The retaining portion 16b provided at the end of the shaft portion 16a of the mounting base 16 is engaged with the end surface 15a of the bearing 15 to prevent the wheel 9 from falling off.

The step 4e is opened toward the outer peripheral surface 4f of the lower case 4 to prevent dust and the like from accumulating in the step 4e. The wheels 9 and the mounting base 16 are prevented from protruding from the outer peripheral surface 4f, thereby preventing damage to the wheels 9 due to hitting a wall or the like during cleaning and preventing damage to the wall or furniture. The support ribs 16 are reinforced by reinforcing ribs 16d provided so as to bridge the pair of support ribs 16c, thereby improving the reliability of the wheel function.

When the wheel 9 is configured in this manner, the wheel 9
Is rotatably mounted around the shaft 16a,
When the moving direction of the suction port body 1 is changed in the directions B and C in FIG. 1, the suction port body 1 can be moved smoothly, and the flooring and the like due to the slipping of the wheels 9 can be prevented. Further, since the axle 9a is supported by the elongated hole 16e, the wheels 9 can be moved in parallel, and the movement in the movement direction can be easily changed because the moment in the movement direction is easily received. It is desirable that the outer peripheral surface of the wheel 9 be smaller in diameter at the end portion 9b ″ than at the central portion 9b ′, since the wheel 9 will be substantially in point contact with the floor surface and will be more likely to receive a moment in the moving direction.

FIG. 18 is an exploded perspective view showing another embodiment of the wheel 9 portion. Plural balls 1 by ring 18
9 and the bearing surface 1 of the mounting base 16.
The stepped portion 4e (see FIG.
7). With such a configuration, the same effect as described above can be obtained.

[0096]

Since the suction opening for a vacuum cleaner according to the present invention has the above-described structure, the rotation angle of the second pipe can be made large, and the air flow path can be reliably secured, thereby generating noise. Can be suppressed. In addition, it is possible to reliably prevent the suction port from wobbling through the first pipe and the second pipe during use.

Further, it is possible to reliably prevent dust from intruding from outside through the restricting means. and again,
The effect of blowing air to the cleaning surface can be expected, and cleaning can be performed more efficiently. Further, the rotating brush can be easily attached to and detached from the main body case.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a suction port for a vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a bottom view showing a suction port for a vacuum cleaner according to the embodiment of the present invention.

FIG. 3 is a front sectional view showing a suction port for a vacuum cleaner according to an embodiment of the present invention.

FIG. 4 is a schematic perspective view showing a state in which the cleaning direction of the suction port body for the electric vacuum cleaner according to the embodiment of the present invention is changed.

FIG. 5 is a side view showing the suction port for a vacuum cleaner according to the embodiment of the present invention.

FIG. 6 is a top view showing the suction port for a vacuum cleaner according to the embodiment of the present invention.

FIG. 7 is a side sectional view showing the suction port body for the vacuum cleaner according to the embodiment of the present invention.

FIG. 8 is an exploded perspective view showing a configuration of a rotating mechanism portion of the suction port for a vacuum cleaner according to the embodiment of the present invention.

FIG. 9 is a side cross-sectional view showing a rotating state of a first pipe in the suction port for a vacuum cleaner according to the embodiment of the present invention.

FIG. 10 is a side cross-sectional view showing a rotating state of a first pipe in the suction port for a vacuum cleaner according to the embodiment of the present invention.

FIG. 11 is an exploded perspective view showing another configuration of the rotary mechanism of the suction port for the vacuum cleaner according to the embodiment of the present invention.

FIG. 12 is a side cross-sectional view showing another configuration of another rotation mechanism of the suction port for a vacuum cleaner according to the embodiment of the present invention.

FIG. 13 is a cross-sectional plan view of a main part illustrating another configuration of another rotation mechanism of the suction port body for the vacuum cleaner according to the embodiment of the present invention.

FIG. 14 is a side sectional view of a main part of FIG.

FIG. 15 is a sectional view of a main part of a portion A in FIG. 14;

FIG. 16 is a cross-sectional plan view of a main part showing still another configuration of the suction port body for the vacuum cleaner according to the embodiment of the present invention.

FIG. 17 is an exploded perspective view showing a configuration of a wheel portion of the suction port for a vacuum cleaner according to the embodiment of the present invention.

FIG. 18 is an exploded perspective view showing another configuration of the wheel portion of the suction port body for the vacuum cleaner according to the embodiment of the present invention.

FIG. 19 is a schematic perspective view showing a conventional suction port for a vacuum cleaner.

FIG. 20 is a schematic top view showing a state in which the direction of cleaning of the conventional suction port body for a vacuum cleaner is changed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suction opening body 2 Main body case 3 Upper case 4 Lower case 5 1st pipe 6 2nd pipe 7 Extension pipe 8 Bumper 9 Wheel 10 Rotary brush 11 Engagement member 12 Fixing member 15 Bearing 16 Mounting base 20 Mounting base

Continued on the front page (72) Inventor Makio Yagi 22-22 Nagaike-cho, Abeno-ku, Osaka-shi, Osaka Inside (72) Inventor Kei Kei Ota 22-22 Nagaike-cho, Abeno-ku, Osaka-shi, Osaka Sharp Corporation (72) Inventor Joh Nagai 22-22, Nagaikecho, Abeno-ku, Osaka City, Osaka F-term (reference) 3B057 BA09 BA27 3B061 AA06 AA18 AA26 AD05 AD11 AF02

Claims (7)

[Claims] 1. A main body case having a suction opening opening toward a surface to be cleaned, and a first air flow passage through which a suction air flow from the suction opening passes, and a rotating shaft parallel to a longitudinal direction of the suction opening. A first pipe rotatably connected to the main body case, a second pipe having a second air flow passage communicating with the first air flow passage, and being rotatably connected to the first pipe; A suction port body for a vacuum cleaner, comprising: a shutter for guiding an air flow in an air flow path of a first pipe to an air flow path of a second pipe without leaking to the outside. 2. The suction port for a vacuum cleaner according to claim 1, wherein the operation of the shutter is linked with the rotation of the second pipe. 3. The suction port body for an electric vacuum cleaner according to claim 1, further comprising a regulating means for regulating an inadvertent rotation of the second pipe with respect to the first pipe. 4. The suction port body for a vacuum cleaner according to claim 3, wherein said regulating means is constituted by a spring and a steel ball. 5. The suction device for a vacuum cleaner according to claim 3, further comprising dust-proof means made of felt or the like for preventing dust such as sand or the like from entering the regulating means. Mouth. 6. The suction port for an electric vacuum cleaner according to claim 1, further comprising an air outlet between the rubber blades of the rotating brush of the main body case. 7. The suction port body for an electric vacuum cleaner according to claim 6, wherein a play is provided in a detachable knob support portion to facilitate attachment and detachment of the rotating brush from the main body case.