JP2000041913A - Suction port body for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction port body for a vacuum cleaner wherein suction efficiencies can be improved and the weight and dimensions of the port body can be reduced, while the operability thereof can be improved, thereby relieving the work load on a user. SOLUTION: There are provided a body case 2 having a suction port open to a surface to be cleaned, a first pipe 5 which is connected to the case 2 so as to be swingable in a direction D1, and a second pipe 6 which is connected to the pipe 5 so as to be swingable in a direction D2. An air passage within the first and second pipes 5, 6 is disposed approximately on a straight line on a plane of side projection, and the sliding part 5a of the pipe 5 is disposed inside the nearly rectangular body case 2 viewed on a flat plane.

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 A conventional suction port for a vacuum cleaner is shown in FIG. 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 indicated by arrow A
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. 15A, the first and second pipes 5 and 6 are arranged in a straight line when viewed from above, 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 in 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. A first pipe having a first air passage passing therethrough 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, and a second air flow passage communicating with the first air flow passage And a second pipe rotatably connected to the first pipe, wherein a sliding portion of the first pipe that slides with the main body case with the rotation of the first pipe is substantially rectangular in plan projection. Is disposed 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 inlet for a vacuum cleaner according to the first aspect, the first and second air passages are arranged substantially in a straight line in a side projection. The rotation axis of the second 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, in the suction inlet body for an electric vacuum cleaner according to the first or second aspect, the first air passage is substantially parallel to substantially parallel to the surface to be cleaned. It is characterized in that it rotates vertically.

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 inlet body 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. In addition, the first and second pipes are made smaller than the width in the depth direction of the main body case in planar projection when the first air flow path is made substantially perpendicular to the surface to be cleaned.

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 is accommodated in a space within the width in the depth direction of the main body case, so that a narrow gap can be cleaned.

According to a fifth aspect of the present invention, in the suction inlet for an electric vacuum cleaner according to the third or fourth aspect, when the first air flow path is substantially parallel to the surface to be cleaned. The rotation of the second pipe is restricted.

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.

According to a sixth aspect of the present invention, in the suction inlet for an electric vacuum cleaner according to any one of the third to fifth aspects, the first air flow path is defined with respect to a surface to be cleaned. The cross-sectional area is maximized when the angle is within the range described above.

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 inlet for a vacuum cleaner according to the sixth aspect, the sliding portion slides on an inner surface of the main body case to have an arc-shaped cross section. The main body case is configured such that the first pipe is rotated by the engagement member having an arcuate cross-section and interlockingly engaged with the first pipe according to the rotation angle of the first pipe and the sliding portion. Is characterized in that it is designed to close the opening provided in the.

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 inlet for a vacuum cleaner according to the seventh aspect, the suction pipe is disposed on the inner surface of the engagement member in accordance with the rotation angle of the first pipe. It is characterized by having a fixing member having an arc-shaped cross section that engages with the engaging 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 inlet for a vacuum cleaner according to the seventh or eighth aspect, a front end of the engaging member closes a gap with the main body case. It is characterized in that a shielding part is provided.

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.

According to a tenth aspect of the present invention, in the suction inlet for a vacuum cleaner according to the first or second aspect, a wheel provided on a bottom surface of the main body case to roll on a surface to be cleaned. However, it is characterized by being rotatable around an axis perpendicular to the 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 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.

According to an eleventh aspect of the present invention, in the suction inlet body for an electric vacuum cleaner according to the tenth aspect, the wheels are movable in parallel with respect to the 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.

According to a twelfth aspect of the present invention, in the suction inlet for a vacuum cleaner according to the tenth or eleventh aspect, the wheels are arranged inside the main body case in a planar projection. It is characterized by.

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.

According to a thirteenth aspect of the present invention, in the suction inlet body for a vacuum cleaner according to any one of the tenth to twelfth aspects, the bottom surface of the main body case is provided with:
A step is provided on the outer peripheral surface of the main body case, and the wheel is installed on the step.

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 of the present invention, in the suction inlet for a vacuum cleaner according to any one of the tenth to thirteenth aspects, a pair of the axles are supported on both side surfaces of the wheel. And a reinforcing member for bridging the support member in front of and behind 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.

According to a fifteenth aspect of the present invention, there is provided a main body case having a suction opening opening toward a surface to be cleaned,
A suction pipe having a sliding portion having an arcuate cross section that slides on an inner surface of the main body case and rotatably connected to the main body case so that suction airflow from the suction port passes therethrough; And a rotating brush that is arranged inside and rotates.

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 suction body for an electric vacuum cleaner according to the fifteenth aspect, the main body case is provided with an inflow port of an intake for rotating a rotary brush, and the slide is provided. The suction pipe is rotated by an engaging member having an arc-shaped cross section which is slidable on the inner surface of the portion and engages with the suction pipe according to the rotation angle of the suction pipe and the sliding portion. In the suction port body for a vacuum cleaner configured to close the opening provided in the main body case as described above, 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.

[0041]

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. 14 and 15 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 the arrow D1 in the opening 3b by the sliding portion 5a having an arc-shaped cross section sliding on the inner surface of the guide portion 3a having an arc-shaped 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.

Therefore, 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, the intake air taken from the suction port 4a in the direction of the arrow E1 advances in the direction of the first pipe 5 as shown by the arrow E2, and the first and second pipes 5, 6 are moved in the direction of the 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 when 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. 15) unlike the conventional example is not required, the depth W3 of the suction opening 1 can be reduced to reduce the size and weight, and the vertical length of the suction opening 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 at substantially 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. Therefore, when the gap below 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, an engaging member 11 and a fixing member 12 as shown in an 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.

Then, according to the rotation angle of the first pipe 5, the engagement claws 11b, 11d provided on the engagement member 11 are provided.
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 engaging claw 11g of the engaging member 11 comes into contact with 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 in the counterclockwise direction, the air flow path in the airflow 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 is rotated 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 pins 14 provided in the lower case 4 pass through the through holes 5 e 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 travels 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.

Thus, 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.

Next, FIG. 12 is an exploded perspective view showing the wheel 9 portion of the suction opening 1 of the present embodiment. The wheel 9 provided with the axle 9a is a pair of support ribs 1 provided on the mounting base 16.
6c is loosely fitted in a horizontally long slot 16e. Axle 9
a may be formed integrally with the wheel 9 to reduce the number of parts. The mounting base 16 is provided with a shaft portion 16 a having a spring property in the radial direction, and the shaft portion 16 a is fitted into a bearing 15 integrated with a step portion 4 e provided on 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. 13 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.
2). With such a configuration, the same effect as described above can be obtained.

[0071]

According to the first aspect of the present invention, the sliding portion of the first pipe, which slides and rotates with the main body case, is disposed inside the main body case having a substantially rectangular planar shape. No protruding connection part like this eliminates the depth of the main body case, making it possible to reduce the weight of the suction port body. Performance can be improved.

According to the second aspect of the present invention, when the frequently used suction port body is used in a normal direction, 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.

According to the third aspect of the invention, when the first pipe is erected, the suction port can be easily cleaned by using the suction port vertically, and when the gap under the bed is small, The height of the extension pipe is reduced by arranging the first pipe substantially parallel to the floor surface, and the suction port can be easily inserted to the depth of the gap, thereby improving operability. .

According to the fourth aspect of the present invention, when the suction port is used vertically, a force is applied to substantially the center of the main body case, so that the balance when the suction port is moved back and forth is improved and the fluctuation of the suction port is suppressed. The operability is improved. And
Since the first and second pipes do not protrude laterally from the main body case, it is possible to clean a narrow gap to the depth of the main body case.

According to the fifth aspect of the present invention, when cleaning the gap or the like in the lower part of the bed, the suction pipe is invisible, so that the direction in which the force is applied is shifted and the second pipe is rotated, and the main body case is moved. Wobbling can be prevented, and operability can be improved.

According to the sixth aspect of the present invention, by setting the air flow passage to have the largest sectional area in the angle range where the rotation frequency of the first pipe is frequently used, suction is performed in the most frequently used angle range. Since the efficiency is increased, power consumption can be reduced.

According to the seventh and eighth aspects of the present invention, the first
The pipe can rotate from substantially parallel to substantially vertical with respect to the floor surface, and can be easily realized such that the cross-sectional area of the air flow path is maximized in a predetermined rotation angle range.

According to the ninth aspect of the present invention, the gap between the fixing member and the upper case is shielded by the shielding portion, so that dust and the like entering from the opening in which the first pipe provided in the main body case rotates can be opened. Since the dust is deposited on the shielding portion close to the portion, the dust can be easily cleaned.

According to the tenth aspect of the present invention, since the wheels are rotatably mounted on the shaft perpendicular to the floor surface, it is possible to smoothly move the suction port body between the normal direction and the vertical use direction. And the flooring and the like can be prevented from being damaged by slipping of the wheels.

According to the eleventh aspect of the present invention, since the axle can move in parallel with the rotation, it is easy to receive a moment in the moving direction of the suction port body, and the movement direction of the suction port body can be changed more smoothly.

According to the twelfth aspect of the present invention, since the wheels do not protrude from the outer peripheral surface of the main body case, it is possible to prevent the wheels from being damaged due to the suction port coming into contact with a wall or the like during cleaning and to prevent damage to the wall or furniture. Can be prevented.

According to the thirteenth aspect of the present invention, since the step on the bottom surface of the main body case to which the wheels are mounted is opened toward the outer peripheral surface of the main body case, it is possible to prevent dust and the like from accumulating in the step.

According to the fourteenth aspect of the present invention, the function of the wheel can be maintained for a long time by reinforcing the supporting member with the reinforcing member that bridges the pair of supporting members to which the wheel is attached, and the reliability of the suction port body is improved. Can be improved.

According to the fifteenth aspect of the present invention, in the suction port having the rotating brush, the rotating brush is disposed inside the sliding portion having a circular arc cross section of the rotating suction pipe. The cost can be reduced, and the burden on the user during cleaning can be reduced.

According to the sixteenth aspect of the present invention, since the hole provided at the optimum position with respect to the position of the suction pipe is linked with the rotation of the suction pipe, the hole is arranged at the same position with respect to the suction pipe. it can. Since the suction airflow can be blown to the rotating brush from the hole of the engaging member closer to the rotating brush than the main body case, it is possible to efficiently apply the rotating force to the rotating brush, and the suction efficiency is improved.

[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 the 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 direction of cleaning of the suction port body for the 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 a suction port for a vacuum cleaner according to an embodiment of the present invention.

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

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

FIG. 12 is an exploded perspective view showing a configuration of a wheel portion of the suction port body for a vacuum cleaner according to the embodiment of the present invention.

FIG. 13 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. 14 is a schematic perspective view showing a conventional suction port for a vacuum cleaner.

FIG. 15 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 Engaging member 12 Fixing member 15 Bearing 16 Mounting base 20 Mounting base

Continuation of the front page (72) Inventor Jin Nagai 22nd-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka F-term (reference) 3B057 BA01 BA09 BA21 BA27 3B061 AA06 AA26

Claims (16)

[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 for a vacuum cleaner, wherein a sliding portion of the first pipe, which slides with the main body case as the first pipe rotates, is disposed inside the main body case, which is substantially rectangular in plan projection. body. 2. The method according to claim 1, wherein the first and second air passages are arranged substantially in a straight line in a side projection, and a rotation axis of the second pipe is substantially perpendicular to the first air passage. Item 6. An inlet for a vacuum cleaner according to Item 1. 3. The suction port body for a vacuum cleaner according to claim 1, wherein the first air flow path rotates from substantially parallel to substantially perpendicular to the surface to be cleaned. . 4. A rotation axis of the second pipe is disposed substantially at a center in a longitudinal direction of the main body case, and the first and second air flow paths are substantially perpendicular to a surface to be cleaned. The suction port body for a vacuum cleaner according to claim 3, wherein the two pipes are smaller than a width in a depth direction of the main body case. 5. The electric cleaning device according to claim 3, wherein the rotation of the second pipe is regulated when the first air passage is substantially parallel to the surface to be cleaned. Suction port for machine. 6. The electric device according to claim 3, wherein the first air passage has a maximum cross-sectional area in a predetermined angle range with respect to the surface to be cleaned. Suction port for vacuum cleaner. 7. The sliding section slides on the inner surface of the main body case to form an arc-shaped cross section, and engages with and interlocks with the first pipe according to the rotation angle of the first pipe. 7. The vacuum cleaner according to claim 6, wherein an opening provided in the body case is closed by the engaging member and the sliding portion so that the first pipe rotates. Suction port body. 8. The fixing device according to claim 7, further comprising a fixing member disposed on an inner surface of the engaging member and having an arc-shaped cross section that engages with the engaging member according to a rotation angle of the first pipe. The suction port body for a vacuum cleaner according to the above. 9. A shielding part for closing a gap between the engaging member and the main body case is provided at a front end of the engaging member.
Or the suction opening body for a vacuum cleaner according to claim 8. 10. The wheel provided on the bottom surface of the main body case and rolling on a surface to be cleaned is rotatable about an axis perpendicular to the surface to be cleaned. 3. The suction body for a vacuum cleaner according to 2. 11. The suction port body for an electric vacuum cleaner according to claim 10, wherein the wheel is movable in parallel with respect to the surface to be cleaned. 12. The suction port body for a vacuum cleaner according to claim 10, wherein the wheels are arranged inside the main body case in a planar projection. 13. The vehicle according to claim 10, wherein a step is formed on the bottom surface of the main body case, the step being opened on the outer peripheral surface of the main body case, and the wheels are installed on the step.
2. The suction body for a vacuum cleaner according to any one of 2. 14. A vehicle according to claim 10, further comprising a reinforcing member for bridging a pair of support members for supporting the axle on both side surfaces of the wheel, before and after the wheel. Suction port body for vacuum cleaner. 15. A main body case having a suction opening opening toward a surface to be cleaned, and a sliding portion having an arc-shaped cross section that slides on an inner surface of the main body case, through which suction airflow from the suction opening passes. A suction pipe rotatably connected to the main body case, and a rotating brush disposed inside the sliding portion and rotating. 16. A suction inlet for rotating a rotating brush is provided in the main body case, and is slidable on an inner surface of the sliding portion to engage with the suction pipe according to a rotation angle of the suction pipe. In the suction port body for a vacuum cleaner, the interlocking engagement member having an arc-shaped cross section and the sliding portion close an opening provided in the main body case so that the suction pipe rotates. The suction port body for a vacuum cleaner according to claim 15, wherein a hole communicating with the inflow port is provided in the engagement member.