JP3457909B2 - Suction port for vacuum cleaner - Google Patents

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art A conventional suction inlet for an electric vacuum cleaner is shown in FIG. In the suction port body 1, a first pipe 5 is supported by a connecting portion 2a of a main body case 2 so as to be rotatable in an arrow D1 direction, and a second pipe 6 is supported in the first pipe 5 so as to be rotatable in an arrow D2 direction. Has been done. The second pipe 6 has a long extension pipe 7
Is connected to guide the intake air to the vacuum cleaner body.

Therefore, the suction pipe 1 is formed by the first pipe 5.
The angle of elevation of the extension pipe 7 when moving in the direction of arrow B can be changed, and the second pipe 6 is rotated from the state in which the first pipe 5 is rotated in the direction D1 so that the extension pipe 7 is substantially upright. Is rotated in the D2 direction, the elevation angle of the extension pipe 7 when the suction port body 1 is moved in the arrow C direction can be changed by the second pipe 6.

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 moved by rolling on the floor surface. A suction port (not shown) is provided on the bottom surface of the main body case 2, and an arrow A1 is drawn from the suction port.
The intake air taken in in the direction of arrow A in the direction of the connecting portion 2a.
Proceed as in 2 and follow the first and second pipes 5, 6 with arrow A
3, A4, A5 and the extension pipe 7 to reach the electric vacuum cleaner.

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

[0006]

However, in the suction port body for such an electric vacuum cleaner, the connecting portion 2a and the first and second pipes 5 and 6 project in the depth direction (B direction) of the suction port body 1. Therefore, the depth W1 of the suction port body 1 becomes larger than the depth W2 of the suction port 2b, which becomes an obstacle during the clearance cleaning, and the size of the suction port body 1 is increased to increase the weight and burden the user. Was getting bigger. Further, since the air flow path is bent in the first pipe 5 and the second pipe 6, there is a problem that pressure loss of intake air is large, suction efficiency is lowered, and noise is increased.

The rotation range of the first pipe 5 in the D1 direction 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 having a small gap with the floor such as the bottom of the bed, which deteriorates operability. Further, since the wheel 9 does not roll in the direction of arrow C, there is a problem that the operability is deteriorated and the wheel 9 is slipped to damage the flooring or the like.

It is an object of the present invention to provide a lightweight and compact suction port body for an electric vacuum cleaner while improving suction efficiency. Another object of the present invention is to provide a suction port body for an electric vacuum cleaner, which can improve the operability and reduce the burden on the user.

[0009]

To achieve the above object, the first invention of the present invention is to provide a main body case having a suction port opening toward a surface to be cleaned, and a suction air flow from the suction port. A first pipe having a first air flow passage and rotatably connected to the main body case about a rotation axis parallel to the longitudinal direction of the suction port; and a second air flow passage communicating with the first air flow passage. A second pipe rotatably connected to the first pipe, and a sliding portion of the first pipe that slides with the main body case in accordance with the rotation of the first pipe has a substantially rectangular shape in a plan view. It is characterized in that it is arranged inside the main body case.

According to this structure, the intake air sucked from the suction port is slidable in the depth direction by the sliding portion in the main body case, which is substantially rectangular in plan view, slidable in the depth direction. Dust is absorbed through the first air flow passage and the second air flow 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 of the suction port body in the depth direction can be reduced.

A second aspect of the present invention is the suction port body for an electric vacuum cleaner according to the first aspect, wherein the first and second air passages are arranged on a substantially straight line in a side projection, and the second aspect is provided.
The turning axis of the pipe is substantially perpendicular to the first air flow path.

According to this structure, the intake air sucked from the suction port is 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 flow path. Then, the second pipe rotates and tilts around a rotation axis that is substantially vertical to the first air flow path so that the first and second air flow paths are always arranged in a substantially straight line when viewed from the side. .

A third invention is the suction port body for an electric vacuum cleaner according to the first or second invention, wherein
It is characterized in that the air flow path is configured to rotate 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 incline in the depth direction of the suction port from substantially parallel to substantially perpendicular to the surface to be cleaned, and the first air passage in the first pipe, and the suction port. In the second pipe that is tiltable in the longitudinal direction of the
Dust is absorbed through the air flow path.

A fourth aspect of the invention is the suction port body for an electric vacuum cleaner according to the third aspect of the invention, wherein the rotating shaft of the second pipe is arranged substantially at the center in the longitudinal direction of the main body case. The first and second pipes are smaller than the width of the main body case in the depth direction in a plane projection when the first pipe is substantially perpendicular to the surface to be cleaned.

According to this structure, the intake air sucked from the suction port is centered around the first air passage in the first pipe that can be tilted in the depth direction of the main body case and the substantially center of the main body case in the longitudinal direction. Dust is absorbed through the second air flow path in the second pipe that can be tilted to. Then, when the first pipe is erected, the suction port body is accommodated in the space within the width of the main body case in the depth direction, so that the narrow gap can be cleaned.

Further, a fifth aspect of the invention is the suction port body for an electric vacuum cleaner according to the third or fourth aspect of the invention, wherein
The feature is that the rotation of the second pipe is restricted when the air flow path is substantially parallel to the surface to be cleaned.

According to this structure, the intake air sucked from the suction port can incline in the depth direction of the suction port from substantially parallel to substantially perpendicular to the surface to be cleaned, and the first air passage in the first pipe, and the suction port. In the second pipe that is tiltable in the longitudinal direction of the
Dust is absorbed through the air flow path. The first and second air flow passages are arranged so that they are always arranged in a substantially straight line 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.

Furthermore, the sixth invention is the third to fifth inventions.
In the suction port body for the electric vacuum cleaner according to any one of the inventions described above, the first air flow passage has a maximum cross-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 can incline in the depth direction of the suction port from substantially parallel to substantially perpendicular to the surface to be cleaned, and the first air passage in the first pipe, and the suction port. In the second pipe that is tiltable in the longitudinal direction of the
Dust is absorbed through the air flow path. Then, the cross-sectional area of the first air passage becomes maximum when the first air passage has an inclination angle at which the first pipe is inclined so that normal cleaning is performed within a predetermined angle range.

A seventh aspect of the present invention is the suction port body for an electric vacuum cleaner according to the sixth aspect, wherein the sliding portion slides on the inner surface of the main body case to form an arcuate section. The first pipe is provided in the main body case such that the first pipe is rotated by an engaging member having an arcuate cross section that engages with and interlocks with the first pipe according to a rotation angle of the first pipe and the sliding portion. It is characterized in that the opening is closed.

According to this structure, when the first pipe is rotated, the sliding portion having an arcuate cross section slides on the inner surface of the main body case. An engaging member having an arcuate 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. Further, the opening provided in the main body case so as to rotate the first pipe is closed by the engaging member and the sliding portion.

An eighth aspect of the invention is the suction port body for an electric vacuum cleaner according to the seventh aspect of the invention, wherein the engaging member is arranged on the inner surface of the engaging member in accordance with the rotation angle of the first pipe. It is characterized in that it has a fixing member having an arcuate cross section that engages with the member.

According to this structure, when the first pipe is rotated, the sliding portion having an arcuate cross section slides on the inner surface of the main body case. An engaging member having an arcuate 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. The fixing member having an arcuate cross section provided on the inner surface of the engaging member engages with the engaging member in accordance with the turning angle of the sliding portion to restrict the turning of the engaging member. The opening provided in the main body case so as to rotate the first pipe is closed by the engaging member, the sliding portion, and the fixing member.

Further, a ninth invention is the suction port body for an electric vacuum cleaner according to the seventh invention or the eighth invention, wherein the front end of the engaging member is a shield for closing a gap with the main body case. It is characterized by the provision of a section.

According to this structure, when the first pipe is rotated, the sliding portion having an arcuate cross section slides on the inner surface of the main body case. An engaging member having an arcuate cross section provided on the inner surface of the sliding portion engages with and interlocks with the sliding portion in accordance with 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, the tenth invention is the first or second invention.
In the suction port body for the electric vacuum cleaner described in, the wheel provided on the bottom surface of the main body case and rolling on the surface to be cleaned is rotatable about an axis perpendicular to the surface to be cleaned. I am trying.

According to this structure, the intake air sucked from the suction port is 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 flow path. Then, when the first pipe is tilted, 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 tilted, the wheels are arranged. Changes its direction and the suction port body is moved in the longitudinal direction to clean the gap.

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

According to this structure, the intake air sucked from the suction port is 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 flow path. Then, when the first pipe is tilted, 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 tilted, the wheels are arranged. While moving in parallel, the direction is changed and the suction port body is moved in the longitudinal direction to clean the gap.

The twelfth invention is the tenth or first invention.
The suction port body for the electric vacuum cleaner described in No. 1 is characterized in that the wheel is arranged inside the main body case in a plane projection.

According to this structure, the intake air sucked from the suction port is 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 flow path. Then, when the first pipe is tilted, 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 tilted, the wheels are arranged. Changes its direction and the suction port body is moved in the longitudinal direction to clean the gap. When the suction port collides with a wall or the like during cleaning, the wheels arranged inside the main body case do not collide with each other when viewed in plan.

The thirteenth invention is based on the tenth to first inventions.
In the suction port body for the electric vacuum cleaner according to any one of the inventions of claim 2, the bottom surface of the main body case is provided with a step portion opening to the outer peripheral surface of the main body case, and the wheel is installed on the step portion. It has a feature.

According to this structure, the intake air sucked from the suction port is 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 flow path. Then, when the first pipe is tilted, the suction port body is moved in the depth direction by the wheels arranged on the stepped portion opening to the outer peripheral surface of the main body case to perform normal cleaning, and the first pipe is substantially erected. When the second pipe is arranged so as to be inclined, the wheels are turned and the suction port body is moved in the longitudinal direction to clean the gap.

Further, a fourteenth invention is the suction port body for an electric vacuum cleaner according to any one of the tenth to thirteenth inventions, wherein a pair of support members for supporting the axle on both side surfaces of the wheel. Is provided with a reinforcing member for bridging the front and rear of the wheel.

According to this structure, the intake air sucked from the suction port is 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 flow path. Then, when the first pipe is tilted, the wheel reinforced by the reinforcing member moves in the depth direction for normal cleaning, and when the first pipe is substantially upright and the second pipe is tilted. The wheels change direction and the suction port body is moved in the longitudinal direction to clean the gap.

Further, a fifteenth aspect of the present invention comprises a main body case having a suction port opening toward a surface to be cleaned, and a sliding portion having an arcuate cross section that slides on an inner surface of the main body case. It is characterized by comprising a suction pipe rotatably connected to the main body case so that the suction airflow from the device can pass therethrough, and a rotating brush disposed inside the sliding portion and rotating.

According to this structure, the sliding portion having an arcuate 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. Meanwhile, the suction port body is moved back and forth for cleaning.

Furthermore, a sixteenth aspect of the invention is the suction port body for an electric vacuum cleaner according to the fifteenth aspect, wherein the main body case is provided with an inlet port for intake air for rotating the rotary brush, and the inner surface of the sliding portion is provided. The main body so that the suction pipe is rotated by the sliding member which is slidable and engages with the suction pipe according to the rotation angle of the suction pipe to interlock with the suction pipe and the sliding portion. In the suction port body for the electric vacuum cleaner, which is configured to close the opening provided in the case, the engaging member is provided with a hole communicating with the inflow port.

According to this structure, the sliding portion having an arcuate 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. Then, the rotating brush disposed inside the sliding portion is rotated by the suction airflow from the inlet provided in the main body case to the rotating brush through the hole provided in the engaging member, and dust is generated by the rotating brush. The suction port body is moved back and forth while picking up and cleaning is performed. A seventeenth aspect of the invention is a main body case having a suction port that opens toward a surface to be cleaned,
A first pipe having a first air flow path through which a suction air flow from the suction port passes and rotatably connected to the main body case about a rotation axis parallel to a longitudinal direction of the suction port; A second pipe that has a second air flow path communicating with the passage and is rotatably connected to the first pipe, and the air flow of the air flow path of the first pipe does not leak to the air flow path of the second pipe to the outside. The feature is that it has a leading shutter.

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

The eighteenth invention is characterized in that, in the suction port body for the electric vacuum cleaner described in the seventeenth invention, the operation of the shutter is interlocked with the rotating operation of the second pipe. .

The nineteenth invention is, in the suction port body for an electric vacuum cleaner according to the seventeenth invention or the eighteenth invention, a regulating means for regulating the careless rotation of the second pipe with respect to the first pipe. It is characterized by comprising.

According to this structure, the first
It is possible to prevent fluctuation of the suction port body through the pipe and the second pipe.

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

Furthermore, the 21st invention is, in the suction inlet for an electric vacuum cleaner described in the 19th or 20th invention, felt or the like for preventing dust such as sand or the like from entering the regulating means. It is characterized in that it is provided with a dustproof means consisting of.

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

A twenty-second aspect of the invention is the suction port body for an electric vacuum cleaner according to the seventeenth aspect, characterized in that an air outlet is provided between the rubber blades of the rotating brush of the main body case. There is.

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

A twenty-third aspect of the invention is the suction port body for an electric vacuum cleaner according to the twenty-second aspect of the invention, wherein a play is provided in the detachable knob support portion for facilitating attachment and detachment of the rotary brush from the main body case. Is provided.

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

[0052]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments 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 designated by the same reference numerals. 1 and 2
[Fig. 2] is a schematic perspective view and a bottom view showing the suction port body for the electric vacuum cleaner according to the embodiment of the present invention. The suction port body 1 has a suction port 4 on the bottom surface.
The lower case 4 provided with a, the upper case 3 to which the first pipe 5 is connected, and the bumper 8 mounted between the upper case 3 and the lower case 4 form the main body case 2. The bumper 8 prevents the occurrence of scratches when the suction port body 1 collides with a wall or furniture.

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 main body of the electric vacuum cleaner.
Wheels 9 are provided at four locations on the bottom surface of the lower case 4 so that the suction port body 1 can be moved by rolling on the floor surface. Further, as shown in the front cross-sectional view of FIG. 3, a rotary brush 10 is provided inside the suction port body 1, and an inflow port 3d (see FIG. 1) through which a suction airflow that gives a rotational force to the rotary brush 10 flows in. Are provided in the upper case 3.

In the first pipe 5, the sliding portion 5a having an arcuate cross section slides on the inner surface of the guide portion 3a having an arcuate cross section so that the opening 3b can be rotated in the direction of arrow D1. It is supported. The second pipe 6 is supported rotatably in the arrow D2 direction by the sliding portion 6a sliding on the inner surface of the support portion 5b provided on the first pipe 5.

Therefore, it is possible to change the elevation angle of the extension pipe 7 when the suction port body 1 is moved in the direction of arrow B (depth direction) by the first pipe 5, and as shown in FIG.
It is possible to change the elevation angle of the extension pipe 7 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"). There is. In FIG. 4, reference numeral 6c is a rotating 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 proceeds in the direction of the first pipe 5 as shown by arrow E2, and the first and second pipes 5 and 6 are moved to the direction of arrow E3. It passes through like E4 and reaches the vacuum cleaner body through the extension pipe 7. At this time, the suction port body 1
The first and second pipes 5 and 6 when used in the normal direction (when used by moving in the B direction in FIGS. 1 and 4).
The first and second pipes 5 and 6 are connected so that the air flow paths (E3, E4) of the suction airflow passing therethrough are aligned. The rotation shaft 6c of the second pipe 6 is attached to the first pipe 5
It is arranged to be perpendicular to the internal air flow path (E3).

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 is not bent, the pressure loss is reduced and the suction efficiency is improved. It becomes possible to reduce the noise. Further, when viewed from the side as shown in FIG. 5, even if the second pipe 6 is rotated around the rotation shaft 6c with respect to the first pipe 5, the inside of the first and second pipes 5 and 6 is always kept. Since the air flow paths (E3, E4) are arranged in a straight line, when the first pipe 5 is erected, the second pipe 6 rotates in a plane perpendicular to the floor surface. There is.

FIG. 6 is a top view showing the state in which the upper case 3 is removed. The sliding portion 5a of the first pipe 5 is arranged inside the main body case 2 having a substantially rectangular shape as viewed from above, and the first pipe 5 is removed.
The rotating shaft 5c is located substantially at the center of the depth W3 of the body case 2. Accordingly, unlike the conventional example, the projecting connecting portion 2a (see FIG. 20) is not required, so that 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. Connection part 2 at the time of use
It is possible to improve the operability without disturbing a.

Further, the rotation shaft 6c (see FIG. 4) of the second pipe 6 is arranged to be substantially at the center of the suction port body 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 body case 2, so
The balance when moving back and forth is improved, fluctuation of the suction inlet body 1 can be suppressed, and operability is improved. In the figure, when the first pipe 5 is arranged perpendicularly to the floor surface, the first and second pipes 5'and 6'shown by broken lines are arranged within the range of the body case 2 in the depth direction. Therefore,
It becomes possible to clean a narrow gap up to the depth W3 of the main body case 2.

In the figure and the above-mentioned FIG. 5, since the first pipe 5 is substantially parallel to the floor surface, the suction port body 1 can be easily extended to the back when the space under the bed is small. Since it can be inserted, operability can be improved. Therefore, 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 the side sectional view of FIG. 7.

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. In order to rotate the first pipe 5 as shown in the figure from a position substantially parallel to the floor surface to a position substantially vertical as indicated by the one-dot chain line 5 ', the opening 3 of the upper case 3 is required.
It is necessary to widen b.

Lengths L1 and L of the front and rear portions of the sliding portion 5a
Since the upper limit of 2 is collided with the upper case 3 and the lower case 4 by the rotation, an upper limit is determined between the opening 3b and the sliding portion 5a. . When the first pipe 5 is erected, a hole is formed behind the body case 2 (rightward in the figure).

In order to close this hole (for example, G part) 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 elastic force like a leaf spring when 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 pressing the fixing portion 12a at the other end into the projecting portion 4c provided on the lower case 4 while pulling the pulling member 2. The engaging member 11 having an arcuate cross section is arranged so as to slide on the inner surface of the sliding portion 5a of the first pipe 5 and slide on the outer surface of the fixed member 12.

At this time, the connecting portion 2 as in the conventional example of FIG.
Since there is no a, the circular side plate 13 cannot be provided on the sliding portion 5a. 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 circular arc cross sections of the sliding portion 5a and the engaging member 11. Thus, the sliding portion 5a and the engaging member 11 are held so as to be sandwiched therebetween.

The engaging member 11 and the fixing member 12 have a cylindrical surface 1.
1e and 12e and openings 11c and 12c,
The suction airflow passes through the openings 11c and 12c and the first pipe 5
It is designed to proceed inward. The flanges 12f provided on both sides of the fixing member 12 are in contact with the inner surface of the guide portion 3a of the upper case 3, and are indicated by arrows F1 and F2.
As shown in FIG. 2, the flow path that communicates from the lateral portion of the engaging member 11 to the opening 3b through the outer surface of the engaging member 11 is blocked to prevent intake air leakage.

Then, the engaging claws 11b and 11d provided on the engaging member 11 according to the turning angle of the first pipe 5.
(See FIG. 7) are engaging claws 5f, 5 provided on the sliding portion 5a.
By engaging with g, the engaging member 11 is rotated. Further, the engaging claws 11 f and 11 g provided on the engaging member 11 are the engaging claws 1 provided on the fixing member 12.
Rotation of the engaging member 11 is restricted by engaging with 2b and 12d (see FIG. 7).

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

At this time, the engaging claw 11g portion of the engaging member 11 abuts 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 to engage. The rotation of the coupling member 11 is restricted. In addition, the airflow inflow portion 5h of the first pipe 5 includes the engaging member 11 and the fixing member 12.
Partially blocked by.

When the first pipe 5 is rotated counterclockwise, the air flow path in the airflow inflow portion 5h gradually expands, and when the inclination angle of the first pipe 5 shown in FIG. 9 is about 45 °, it slides. Engaging claw 5g and engaging member 11 provided on the moving part 5a
Engages with the engaging claw 11d provided on the
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 counterclockwise, the air flow path in the air flow inflow portion 5h is rotated while maintaining the maximum cross-sectional area, and the first pipe 5 is moved to the upper case as shown in FIG. The rotation of the first pipe 5 is restricted by coming into contact with the end surface 3c of the opening 3b of the third pipe 3. At the same time, the engaging claw 12d provided on the fixing member 12 and the engaging claw 1 provided on the engaging member 11
The rotation of the engaging member 11 is restricted by engaging with 1g.

Next, from the state shown in FIG. 10, the first pipe 5
When is rotated clockwise, the air flow path in the airflow inflow portion 5h is gradually narrowed by the engaging member 11,
When the inclination angle of the pipe 5 is about 45 °, the air flow path in the airflow inflow portion 5h has the smallest cross-sectional area. 1st in the clockwise direction
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 of FIG.

With the above configuration, the first pipe 5
It is possible to rotate the from approximately parallel to the floor surface. And the suction port body 1 that is frequently used
Is used by moving it in the direction B shown in FIG. 1, the more frequently used first pipe 5 has an inclination angle of about 45.
When using in the range of 60 ° to 60 °, once use the first pipe 5
The air flow path in the airflow inflow part 5h can be made to have the maximum cross-sectional area by rotating after the blades are placed in a position substantially parallel to the floor surface, and the suction efficiency in the most commonly used state is increased. I have to.

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

In FIG. 7 described above, a shielding portion 11a is provided at the front end portion 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 on the lower front portion (H portion) of the fixing member 12, it is difficult to clean the dust and the like. It shields the gap between and. Therefore, dust or the like that has entered through the opening 3b is deposited on the shielding portion 11a near the opening 3b, which facilitates cleaning.

In the figure, when the first pipe 5 is made substantially parallel to the floor surface, the pin 14 provided in the lower case 4 penetrates the through hole 5e provided in the first pipe 5 and the second pipe 5 is formed. 6
Is engaged with the engaging portion 6e having a semicircular shape when viewed from above. Then, when cleaning the gap or the like at the bottom of the bed, it is possible to prevent the main body case 2 from wobbling due to rotation of the second pipe 6 because the suction port body 1 is not visible and the direction in which the force is applied is deviated. is doing. The pin 14 and the through hole 5e are made small enough not to reduce the dust suction force due to the intake air leak.

FIG. 11 is a perspective view showing another embodiment of the engaging member 11. The difference from FIG. 8 is that the engagement member 11 is elongated in the longitudinal direction, and the elongated cylindrical surface 11e ′ is provided with an elongated hole 11f. Inlet 3d of the upper case 3 (Fig. 1
The suction airflow taken into the inside of the suction port body 1 through the suction port body 1 collides with the flexible body 10b (see FIG. 9) of the rotary brush 10 through the elongated hole 11f to rotate the rotary brush 10, and then the suction airflow. At the same time, it proceeds in the direction of the first pipe 5 as indicated by arrow E2 in FIG. Then, dust on the floor 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 in at a position closer to the position where the intake air is advanced toward the first pipe 5. It can be sprayed onto the flexible body 10b. The long hole 11f is interlocked with the rotation of the first pipe 5 and varies a little 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 be always arranged at a position relative to the first pipe 5 where the intake air can be efficiently blown to the flexible body 10b, and the rotating brush 10 can always be efficiently provided with a rotating force. Suction efficiency is improved.

Another structure of the rotation mechanism portion including the first pipe 5 and the second pipe 6 shown in FIGS. 1 and 3 is shown in FIG.
2 to 14 will be described together.

The first pipe 5 shown in FIG. 9 is combined with the second pipe 6 in the shape of the first pipe 5 shown in FIG. 12 so that it can be adjusted within the range of the angle D2 as shown in FIGS. 13 and 14. . Further, the steel ball 30 and the fixing plate 31 constitute a lock mechanism (regulating means) that holds the rotational fluctuation of the suction port body 1 and the second pipe 6 up to a constant rotational force.

The first pipe 5 has a rotation range D3 shown in FIG.
As shown in FIG. 12, the lower surface of the second pipe 6 is rotatably attached to the rotation center of the second pipe 6 and is covered with a cover 34. Further, the upper surface is rotatably attached to the pipe cover 32 with a screw 35 about the center of rotation, and is fixed to the second pipe 6 with a screw 36, and has a holding structure to have a rotating structure within a rotating range D2.

The opening of the turning range D3 shown in FIG. 13 is supported by the left and right shutters 37a and 37b slidably by the groove 38 of the first pipe 5 and the cover 34, and is opened by adjusting the angle of the turning range D2. Air is guided to the second pipe 6 as shown by an arrow H.

When the second pipe 6 is rotated and tilted as shown in FIG. 14, the shutter 37a is opened at the portion A of the second pipe 6.
Is rotated and the shutter 37b keeps the state 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 is returned 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 is rotated. The intake air is guided to the second pipe 6 from the suction inlet body 1 without blocking the opening by the shutter 37 and inflowing the air from the outside.

Further, a steel ball 30 and a spring 40 for holding the first pipe 5 up to a constant rotational force to prevent the intake port body 1 from wobbling are attached, and a fixing plate 31 is attached to 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 by a constant rotational force.

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

With the above structure, the front and rear fluctuations of the suction port body 1 during 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 widened and the air flow in the air flow passage becomes smooth, so that noise generation can be minimized.

The rotating brush 10 of FIG. 12 has a brush 53 and a rubber blade 50. The rubber blade 50 allows the air flowing from the side surface of the upper case 3 between the adjacent rubber blades to the rubber blade 50 via the brush shaft 52. The structure is such that air is blown out from a large number of holes 51 arranged.

The rotating brush 10 rotates in the direction of the arrow to scrape the carpet surface together with the brush 53 at the front side 50a of the rubber blade 50, and then blows the air discharged from the hole 51 onto the carpet surface and scrapes (sweeps out) the rubber blade 50b.
Therefore, the structure is such that the effect of air blowing is further increased.

In FIG. 16, the air intake hole 54 is discharged from the upper case 3 or the lower case 4 from the brush shaft 52 as shown by an arrow N. Further, the attachment / detachment button 55 for attachment / detachment of the rotary brush 10 of FIG. 16 is sandwiched between the upper case 3 and the lower case 4, and a margin (play) 57 is provided above and below the center of the shaft 56.

The lower case 4 holds the rotary brush 10 by a spring 58 for holding the attachment / detachment button 55 and has a rib 59. When the suction port body 1 receives an impact due to a drop or the like, it tries to overcome the spring 58 to rotate about the shaft 56, but the rib 59 suppresses the rotation and prevents the rotation, and prevents the attachment / detachment.

Further, when attaching / detaching, since the attaching / detaching button 55 is pulled upward as shown by the arrow K, the allowance of the shaft 56 is 5
Since the rotating force is applied after moving once to 7, the rib 59 of the lower case deviates from the rotation locus, so that it can be easily attached and detached.

Next, FIG. 17 is an exploded perspective view showing a wheel 9 portion of the suction port body 1 of this embodiment. The wheel 9 provided with the axle 9a is a pair of support ribs 1 provided on the mount 16.
6c is loosely fitted in a long hole 16e that is long in the horizontal direction. Axle 9
The 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 16a having a spring property in the radial direction, and the shaft portion 16a is fitted into a bearing 15 integrated with a step portion 4e provided in the lower case 4.
The retaining portion 16b provided at the end of the shaft portion 16a of the mounting base 16 engages with the end surface 15a of the bearing 15 to prevent the wheel 9 from falling off.

The step portion 4e is opened toward the outer peripheral surface 4f of the lower case 4 to prevent dust and the like from being accumulated in the step portion 4e. The wheels 9 and the mounting base 16 are prevented from protruding beyond the outer peripheral surface 4f in order to prevent the wheels 9 from being damaged by hitting a wall or the like during cleaning and from scratching the walls or furniture. Further, the supporting rib 16 is reinforced by the reinforcing rib 16d provided so as to bridge the pair of supporting ribs 16c, and the reliability of the wheel function is improved.

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

FIG. 18 is an exploded perspective view showing another embodiment of the wheel 9 portion. Multiple balls 1 by ring 18
9 is positioned and arranged, and the bearing surface 1 of the mounting base 16
6f and a bearing surface (not shown) provided on the lower surface of the fixed base 20 are sandwiched by a pin 17 to form a stepped portion 4e (see FIG. 1).
(See 7). With such a configuration, the same effect as above can be obtained.

[0096]

Since the suction port body for the electric vacuum cleaner of the present invention has the above-mentioned structure, the rotation angle of the second pipe can be made large, and the air flow path can be surely secured to generate noise. Can be suppressed. Further, during use, it is possible to reliably prevent the suction port body from wobbling through the first pipe and the second pipe.

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

[Brief description of drawings]

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

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

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

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

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

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

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

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

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

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

FIG. 13 is a cross-sectional plan view of relevant parts showing another configuration of the rotating mechanism of the suction port body for the electric vacuum cleaner according to the embodiment of the present invention.

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

15 is a cross-sectional view of a main part of a portion A of FIG.

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

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

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

[Explanation of symbols]

1 Suction mouth 2 body case 3 upper case 4 lower case 5 First pipe 6 second pipe 7 Extension pipe 8 bumpers 9 wheels 10 rotating brushes 11 Engagement member 12 fixing members 15 bearings 16 mounting base 20 fixed base

Front page continuation (72) Kei Ota, 22-22 Nagaike-cho, Nagano-cho, Abeno-ku, Osaka-shi, Osaka Prefecture Sharp Corp. (72) Inventor, Jo Nagai, 22-22, Nagaike-cho, Abeno-ku, Osaka-shi, Osaka Prefecture (56) ) Reference JP 57-177728 (JP, A) JP 5-220073 (JP, A) JP 60-194924 (JP, A) JP 5-42077 (JP, A) JP 63-197426 (JP, A) JP-A-5-95866 (JP, A) JP-A-2-124118 (JP, A) Actually opened 62-151842 (JP, U) Actually opened 63-58953 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A47L 9/02 A47L 9/04 A47L 9/24

Claims (7)

(57) [Claims] 1. A main body case having a suction port opening toward a surface to be cleaned, and a rotary shaft having a first air flow path through which a suction air flow from the suction port passes and parallel to a longitudinal direction of the suction port. A first pipe rotatably connected to the main body case and a second pipe rotatably connected to the first pipe having a second air flow passage communicating with the first air flow passage, First,
When the second air flow path is arranged on a substantially straight line in side projection,
The rotation axis of the second pipe is substantially the same as that of the first air passage.
If it is vertical and the first pipe can be tilted in the depth direction,
By rotating the second pipe together, the longitudinal direction of the suction port
A suction port body for an electric vacuum cleaner, comprising a shutter that can be tilted in the opposite direction and is provided with a shutter that guides the air flow in the air flow path of the first pipe to the air flow path of the second pipe without leaking to the outside. 2. The suction port body for a vacuum cleaner according to claim 1, wherein the operation of the shutter is interlocked with the rotating operation of the second pipe. 3. The suction port body for an electric vacuum cleaner according to claim 1, further comprising a regulation unit that regulates inadvertent rotation of the second pipe with respect to the first pipe. 4. The suction port body for an electric vacuum cleaner according to claim 3, wherein the restricting means comprises a spring and a steel ball. 5. The suction device for an electric vacuum cleaner according to claim 3 or 4, further comprising dust-proofing means made of felt or the like for preventing dust and dirt such as sand from entering the regulating means. Mouth. 6. The suction port body for an electric vacuum cleaner according to claim 1, wherein an air outlet is provided 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 the attachment / detachment knob support portion to facilitate attachment / detachment of the rotary brush from the main body case.