JP7353087B2 - Vacuum cleaner suction body and vacuum cleaner equipped with the same - Google Patents

Description

The present invention relates to a suction port body for a vacuum cleaner and a vacuum cleaner equipped with the same.

The suction port body of a conventional general vacuum cleaner has a substantially rectangular shape in plan view, as shown in Patent Document 1, for example.

JP2009-183580A

In a conventional suction port body having a substantially rectangular shape in plan view, for example, the suction port is located at a corner having an angle smaller than a right angle (hereinafter sometimes referred to as a ``corner less than a right angle'') of a tread around a staircase in a house. The corners of the front end of the body cannot be entered, and dust accumulated in corners less than a right angle cannot be suctioned and removed.
Note that the same applies to cleaning corners that are less than right angles on floors other than stairs.

SUMMARY OF THE INVENTION An object of the present invention is to provide a suction port body for a vacuum cleaner and a vacuum cleaner equipped with the same.

According to the present invention, the housing includes a housing that can run on a surface to be cleaned;
The casing has a left end and a right end in the left-right direction, and has a suction port at the bottom facing the surface to be cleaned,
At least one of the left end and the right end has a corner that can be entered into a corner having an angle less than a right angle surrounded by the surface to be cleaned and two adjacent vertical surfaces on the surface to be cleaned. A vacuum cleaner suction mouth body provided with a corner entry part is provided.
Further, according to the present invention, there is provided a vacuum cleaner including a vacuum cleaner main body having an air blowing section and a dust collecting section, and the suction port body connected to the vacuum cleaner main body directly or via a connecting pipe. Ru.

According to the present invention, it becomes easier to clean corners that are less than a right angle.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the vacuum cleaner provided with the suction port body of 1st Embodiment of this invention. It is a top view of the suction port body of 1st Embodiment. It is a bottom view of the suction port body of 1st Embodiment. It is a figure explaining the state where the front end of the suction port body of a 1st embodiment was brought into contact with the stairway board. It is a figure explaining the state where the top of the tread around the stairs is cleaned with the suction port body of 1st Embodiment. FIG. 3 is a view from the bottom side illustrating a state in which a corner having an angle of about 45° on a tread plate of a staircase is cleaned using the suction port body of the first embodiment. It is a figure explaining the state where the substantially right-angled corner of the tread of a staircase is cleaned with the suction port body of 2nd Embodiment. It is a figure explaining the state where the substantially right-angled corner of the tread of a staircase is cleaned with the suction port body of 2nd Embodiment. It is a figure explaining the state in which the corner part which has an angle of about 45 degrees on the circumferential tread of a staircase is cleaned with the suction port body of 2nd Embodiment.

(First embodiment)
<Overall configuration of vacuum cleaner>
FIG. 1 is a perspective view showing a vacuum cleaner equipped with a suction port body according to a first embodiment of the present invention.
As shown in FIG. 1, this vacuum cleaner 1 includes a vacuum cleaner body 10, a battery 13 that is detachably held in the vacuum cleaner body 10, a suction port body 30, and a vacuum cleaner body 10 and a battery 13 that is detachably held in the vacuum cleaner body 10. and an extension tube 20 that airtightly connects the two.
Although FIG. 1 illustrates a stick-type cordless vacuum cleaner, the suction port body 30 of the present invention is also applicable to canister-type, upright-type, and other vacuum cleaners.

The cleaner body 10 includes a drive device 11 and a dust collector 12.
The drive device 11 includes an electric blower accommodating portion 11a that accommodates an electric blower (not shown), a battery holding portion 11b that removably holds the battery 13, and a front connecting cylinder portion that is removably connected to the extension tube 20. 11c, a rear handle 11d connected to the battery holding part 11b and the connecting cylinder part 11c, an operation switch 11e provided on the handle 11d, and a space between the battery holding part 11b and the connecting cylinder part 11c. and a dust collector holding portion 11f that removably holds the dust collector 12.
The electric blower accommodating portion 11a has a front opening (not shown) and an exhaust port (not shown) on the right side.

The dust collecting device 12 includes a dust collecting container 12a having an opening for discarding dust accumulated therein, and a filter section 12b detachably attached to the opening of the dust collecting container 12a.
The dust collecting container 12a has an air inlet (not shown) in its periphery that can be connected to an air outlet (not shown) provided on the dust collector holding part 11f side of the connecting cylinder part 11c of the drive device 11. ing.
The filter part 12b includes a cylindrical cup part (not shown) that is removably fitted into the opening of the dust collecting container 12a, and a cylindrical mesh connected to the cup part so as to be accommodated in the dust collecting container 12a. (not shown), a filter main body (not shown) that is removably housed in the cup part, and a cylindrical cover part 12ba that covers the periphery of the cup part.
In a state where the dust collector 12 is held by the drive device 11, the cover portion 12ba of the filter portion 12b is connected to the front opening of the electric blower accommodating portion 11a of the drive device 11.

In the vacuum cleaner 1 having such a configuration, when the operation switch 11e of the drive device 11 is turned on, the electric blower is driven, and dust-containing air is sent from the suction port body 30 to the extension pipe 20 and the connecting cylinder portion 11c of the drive device 11. The dust flows into the dust collection container 12a of the dust collection device 12 through.
A portion of the relatively large first dust in the dust-containing air that has flowed into the dust collecting container 12a is centrifuged within the dust collecting container 12a, and the remaining first dust is captured by the mesh portion. Air containing second dust smaller than the first dust passes through the mesh portion, and the second dust is captured by the filter body. The air from which the second dust has been removed flows into the electric blower accommodating section 11a, passes through the electric blower, and is exhausted to the outside from the exhaust port.

<Structure of suction port body>
FIG. 2 is a plan view of the suction port body of the first embodiment, FIG. 3 is a bottom view of the suction port body of the first embodiment, and FIG. 4 is a top view of the suction port body of the first embodiment. FIG. 6 is a diagram illustrating a state in which it is brought into contact with a recessed plate. Note that in FIGS. 2 to 4, arrows indicate the front, rear, left, and right directions of the suction port body.

As shown in FIGS. 2 to 4, the suction port body 30 includes a suction port main body 31, a joint portion 38, and a connecting pipe portion 39.
The suction port body 31 includes a housing 32 having a bottom portion 32a, a peripheral portion 32b, and an upper portion 32c, and roller-shaped wheels 33 provided at the rear of the bottom portion 32a of the housing 32.
The bottom part 32a has a suction part 32aa having a suction port 31a, and a wheel holding part 32ab provided at the rear end of the suction part 32aa, and the suction part 32aa has an opposing surface substantially parallel to the surface to be cleaned F. ing.

The suction portion 32aa is formed into a substantially trapezoidal shape extending in the left-right direction when viewed from above, and the lower side of the substantially trapezoid is the front end of the suction portion 32aa.
A suction port 31a is provided along the front end of the suction portion 32aa, and a pair of sheet-like members 31b are provided at left and right positions behind the suction port 31a in the suction portion 32aa.
The sheet-like member 31b is made of, for example, a raised fabric having a raised surface on a base material. Note that the sheet-like member 31b is not limited to a raised fabric, and may be a soft sheet material such as a nonwoven fabric, woven fabric, knitted fabric, or foamed resin sheet having a predetermined thickness.

The wheel holding portion 32ab protrudes rearward from the middle position in the left-right direction of the rear end (approximately the upper side of the trapezoid) of the suction portion 32aa, and is provided with a recess 31c in the rear portion for accommodating the upper portion of the wheel 33. Furthermore, fitting grooves into which the left-right shaft 33a of the wheel 33 is rotatably fitted are provided at the left and right positions of the recess 31c in the wheel holding portion 32ab.
As shown in FIG. 4, in a state where the suction port body 30 is placed on the surface to be cleaned F (RP1), the suction port body 31 is supported by a pair of left and right sheet-like members 31b and wheels 33. It is possible to run on the cleaning surface F (RP1) in the front and rear directions.

The peripheral portion 32b is connected to the bottom portion 32a so as to surround the entire suction portion 32aa of the bottom portion 32a and both left and right ends of the wheel holding portion 32ab.
This peripheral portion 32b has a front end surface 32ba, a left side surface 32bb, and a right side surface 32bc, and a corner portion 32d is located between the front end surface 32ba and the left side surface 32bb and between the front end surface 32ba and the right side surface 32bc. The corner entry portion 32D has a corner entry portion 32D.

In the left and right corner entry portions 32D, the angle θ1 (see FIG. 2) of each corner 32d is less than 90°, preferably 60° or less, and more preferably 45° or less. In this embodiment, a case is illustrated in which the angles of the pair of corner portions 32d are each 45°. Note that the angles θ1 of the respective corner portions 32d may be the same or different from each other.

A sheet-shaped cushion member 31d is provided on the outer surface of each corner 32d.
As the cushion member 31d, like the sheet-like member 31b, a soft sheet material such as a raised cloth, a nonwoven fabric, a woven fabric, a knitted fabric, or a foamed resin sheet can be used.
The upper part 32c is connected to the peripheral part 32b so as to cover the suction part 32aa of the bottom part 32a from above, and a cylindrical connecting part 32ca that opens rearward is provided at the middle part in the left-right direction at the rear part. Note that the bottom portion 32a and the surrounding portion 32b may be integrated, the upper portion 32c may be separate from this, and these may be combined to form a housing. Alternatively, a part of the surrounding part 32b and the upper part 32c may be integrated, and the remaining part of the surrounding part 32b and the bottom part 32a may be integrated, and these may be assembled to form a housing.

The joint portion 38 is rotatably and airtightly connected to the connecting portion 32ca of the suction port main body 31 about the first axis P1 in the front-rear direction.
The connecting tube portion 39 has a connecting end portion that is rotatably connected to a fitting recess 38a provided at the rear end of the joint portion 38 about a second axis P2 in a direction orthogonal to the first axis P1. 39a.

<About cleaning stairs using the suction port>
FIG. 5 is a diagram illustrating how the suction port body of the first embodiment cleans the surrounding treads of the stairs, and FIG. FIG. 3 is a diagram illustrating a state in which a corner having an angle of .degree. is cleaned when viewed from the bottom side.
As a staircase in a house, there is a staircase having a plurality of circumferential treads, as shown in FIG. In this embodiment, a staircase G that changes direction by 180 degrees as it ascends from bottom to top in the direction of arrow A is illustrated by four first to fourth treads RP1 to RP4.

In the staircase G shown in FIG. 5, two places on the first circumferential tread plate RP1 and one place on the third circumferential tread plate RP3 have an angle of approximately 45° that cannot be entered with the front end corner of the conventional suction port body, which is approximately rectangular in plan view. Corners K1 to K3 with angles are present.
In the first circumferential tread RP1, the right corner K1 when going up the stairs G is surrounded by the first circumferential tread (surface to be cleaned) RP1, the outer stringer (elevation surface) M1, and the recess plate (elevation surface) N. The left corner K2 is a corner surrounded by the first circumferential tread (surface to be cleaned) RP1, the inner stringer (elevation) M2, and the recess plate (elevation) N. .
In addition, in the third circumferential tread RP3, the right corner K3 when going up the stairs is formed by the third circumferential tread (surface to be cleaned) RP3, the outer stringer (elevation surface) M1, and the recess plate (elevation surface) N. It is an enclosed corner.

When cleaning a house (for example, a two-story house) having stairs G shown in FIG. 5, the stick-type vacuum cleaner 1 shown in FIG. When moving to a vacuum cleaner, the effort of removing the suction port body 30 from the extension pipe 20 and replacing it with an attachment (narrow-mouth nozzle, brush nozzle, etc.) or removing the extension pipe 20 from the vacuum cleaner main body 10 and replacing it with an attachment is unnecessary. That is, when cleaning the stairs G, by using the suction port body 30 of the present invention, it is possible to clean the sharp corners K1 to K3, which were conventionally cleaned by replacing with an attachment.

To explain in detail, as shown in FIGS. 4 to 6, when cleaning the first and third treads RP1 and RP3 of the stairs G with the suction port body 30 connected to the extension pipe 20, the right side of the suction port body 30 Alternatively, the left acute corner entry portion 32D may enter the acute corners K1 to K3 to bring the suction port 31a close to the corners K1 to K3. As a result, the dust D accumulated in the corners K1 to K3 can be removed by suction from the suction port 31a. In addition, in FIG. 6, the corner K1 is an area surrounded by the outer stringer M1, the recess plate N, and the dotted line on the rotating tread plate (not shown).

At this time, as shown in FIGS. 4 and 6, the cushion member 31d of the right corner entry portion 32D of the suction port body 31 comes into contact with the outer stringer M1 and the recess plate N, and the left corner entry portion When the cushion member 31d of the portion 32D comes into contact with the recess plate N, a gap S1 is formed between the right corner 32d of the suction port body 31 and the back of the corner K1, and the front end surface 32ba of the suction port body 31 is A gap S2 is formed between the melting plate N and the melting plate N. Therefore, during suction, air flows into the gaps S1 and S2 from above, and the dust at the corner K1 and the dust near the brush plate N are sucked together with the air into the suction port 31a. Further, the cushion member 31d suppresses damage to the recess plate N and the side beam M1.

In this way, since the sharp corners K1 to K3 of the stairs G can be cleanly cleaned by the suction port body 30, other parts of the stairs G can also be cleanly cleaned, and there is no need to change the attachment to the extension pipe 20. Become. Furthermore, it is also not necessary to change attachments when cleaning corners that are less than right angles on floors other than stairs.
On the other hand, when using a conventional approximately rectangular suction port, for example, after cleaning the floor on the first floor with a stick vacuum cleaner, remove the extension pipe to which the suction port is connected from the vacuum cleaner body. Then, the user removes the attachment from the vacuum cleaner body, replaces the extension pipe to which the suction port is connected, and cleans the floor on the second floor. Alternatively, after cleaning the floor on the second floor with a stick-type vacuum cleaner with a suction port connected to the vacuum cleaner body via an extension tube, remove the suction port from the extension tube and attach an attachment (narrow nozzle, brush nozzle). etc.) and clean the stairs from top to bottom, then remove the attachment from the extension pipe and replace the suction port body again to clean the floor on the first floor. As described above, when the conventional suction port body is used, it is necessary to replace the suction port body and the attachment between cleaning the floor surface and cleaning the stairs, which is troublesome.

In this embodiment, the angle θ1 (see FIG. 2) of the corner entry portion 32D of the suction port body 31 is 45°, but the corners K1 to K3 of the stairs G having an angle of about 45° On the other hand, the angle θ1 of the corner entry portion 32D may be less than 45° (for example, about 30°). Further, if the angle of the corner of the stairs G is, for example, about 60°, the angle θ1 of the corner entry portion 32D of the suction port body 31 may be about 60°, but the angle θ1 should be set as small as possible. This makes it possible to accommodate corners of various angles.

(Second embodiment)
FIG. 7 is a diagram illustrating a state in which a substantially right-angled corner on a stair tread is cleaned using the suction port body of the second embodiment, and FIG. FIG. 9 is a diagram illustrating a state in which a substantially right-angled corner on the top is cleaned, and FIG. 9 is a diagram illustrating a state in which a corner having an angle of approximately 45° on a tread around a staircase is cleaned with the suction port body of the second embodiment. FIG. Note that in FIGS. 7 to 9, elements similar to those in FIGS. 1 to 6 are given the same reference numerals.
The suction port body 130 of the second embodiment has substantially the same structure as that of the first embodiment, except that the structure of the left and right corner entrance portions 132D is different from that of the first embodiment. Hereinafter, differences between the second embodiment and the first embodiment will be mainly described.

As shown in FIGS. 7 to 9, in the suction port body 130 of the second embodiment, the left and right corner entry portions 132D have a front end surface 132ab, a left side surface 132ba, and a right side surface 132ca. The left side surface 132ba or the right side surface 132ca is configured to be movable so that the angle θ2 of the corner 132d between the left side surface 132ba or the right side surface 132ca is smaller than a right angle.

Specifically explaining the configuration of the suction port body 130 of this embodiment, the housing 132 of the suction port body 131 includes a main body portion 132a having a front end surface 132ab and formed into a trapezoid in plan view, and a left side surface 132ba. The left movable part 132b has a right side surface 132ca, and the right movable part 132c has a right side surface 132ca.
In addition, the right corner entry portion 132D includes a shaft portion 141 that connects the right movable portion 132c to the main body portion 132 so as to be swingable about the vertical axis, and a right corner portion 132d. and a biasing member 142 that biases the right movable portion 132c in a direction that brings the angle θ2 closer to a right angle.

Further, similarly to the right corner entry section 132D, the left corner entry section 132D also connects the left movable section 132b to the main body section 132 at the left corner section 132d so as to be able to swing around the vertical axis. It has a shaft portion 141 and a biasing member (see FIG. 8) that biases the left movable portion 132b in a direction that brings the angle θ2 of the left corner portion 132d closer to a right angle.
In addition, in the left and right corner entry portions 132D, as the biasing member 142, for example, an elastic foam, a compression coil spring, a plate spring, etc. can be used, and in this embodiment, an arc-shaped elastic foam is used. ing.

Further, cushion members 131d are provided on both left and right ends of the front end surface 132ab of the main body portion 132a, and cushion members 131e are provided on the left side surface 132bb of the left movable portion 132b and the right side surface 132bc of the right movable portion 132c. ing.

Moreover, the main body part 132a includes a right movable part storage space 132aa in which the right movable part 132c can be stored, and a right opening part 132ab provided on the right side of the main body part 132a so as to communicate with the right movable part storage space 132aa. and has. Further, the main body part 132a includes a left movable part storage space 132ac in which the left movable part 132b can be stored, and a left opening part 132ad provided on the left side surface of the main body part 132a so as to communicate with the left movable part storage space 132ac. and has. Seal members 132ae are provided at the edges of the right opening 132ab and the left opening 132ad, respectively. Note that the seal member 132ae can be formed of the same material as the sheet-like member 31b provided at the bottom of the suction port body 131.

The right movable portion 132c is formed into a fan shape in a plan view, and a boss portion through which the shaft portion 141 is inserted is provided in an important portion of the fan shape. Note that a boss portion is also provided at a location where both ends of the shaft portion 141 are pivotally supported in the right opening portion 132ab of the main body portion 132a.
Further, the right movable portion 132c has an opening 132cb on the opposite side to the right side surface 132ca, and has a plurality of suction ports 132cc at the bottom.
The left movable part 132b has a symmetrical structure with the right movable part 132c, has an opening (not shown) on the opposite side to the left side surface 132ba, and has a plurality of suction ports 132bc at the bottom. . Note that a boss portion is also provided at a location in the left opening portion 132ad of the main body portion 132a that pivotally supports both ends of the shaft portion 141.

Further, the right movable portion 132c is provided with a stopper piece 132cd at the end opposite to the shaft portion 141 of the opening portion 132cb, and the left movable portion 132b is similarly provided at the end opposite to the shaft portion 141 of the opening portion (not shown). A stopper piece (not shown) is provided at the end.
On the other hand, on the back side of the front end surface 132ab of the main body part 132a, when the right movable part 132c and the left movable part 132b swing toward the main body part 132a side (inward) about the respective shaft parts 141, each stopper piece 132cd and A stopper convex portion 132af that comes into contact is provided.

Each stopper piece 132cd of the right movable part 132c and the left movable part 132b comes into contact with each stopper convex part 132af, thereby restricting the inward swinging of the right movable part 132c and the left movable part 132b (Fig. 9 reference). At this time, the minimum angle θ2 of the left and right corner entry portions 132D is preferably 60° or less, more preferably 45° or less. In the case of this embodiment, the minimum angle θ2 is approximately 50°.

In the right corner entry portion 132D, the arc-shaped biasing member 142 has one end in contact with the back surface of the front end surface 132ab of the main body portion 132a, and the other end in contact with the back surface of the right side surface 132ca of the right movable portion 132c. are in contact with each other. As a result, the right movable portion 132c is urged in the direction of protruding outward by the biasing member 142, and the stopper piece 132cd comes into contact with the seal member 132ae, thereby restricting the outward swinging of the right movable portion 132c. (See Figure 7).
The left corner entry section 132D is also configured in the same manner as the right corner entry section 132D.
In this embodiment, the maximum angle θ2 when the left and right corner entry portions 132D protrude most outward is 90°.

<About cleaning stairs using the suction port>
When cleaning the rectangular tread P of the stairs G explained in FIG. 5 using the suction port body 130 of this embodiment, as shown in FIG. In addition, the left side surface 132ca of the right movable portion 132c can be made to face the outer stringer M1. Therefore, the suction ports 31a and 132cc are close to the side plate N including the 90° corner K on the tread P and the side spar M1, and Dust is sucked into the suction ports 31a and 132cc.

At this time, since the right opening 132ab of the main body part 132a is provided with a sealing member 132ae that comes into contact with the outer surface of the right movable part 132c, air does not flow into the right movable part 132c from gaps other than the suction port 132cc. This suppresses a decrease in the suction force of the suction ports 31a and 132cc.
Note that the same applies when cleaning with the front end surface 132ab of the suction port body 131 facing the recess plate N of the footboard P, and the left side surface 132ba of the left movable part 132b facing the inner stringer M2. The same applies when cleaning the second and fourth rotational treads RP2 and RP4 having a corner K of 90 degrees.

Further, when cleaning the acute corner K1 on the first round tread RP1 of the stairs G explained in FIG. 5 using the suction port body 130 of this embodiment, as shown in FIG. By moving the portion 132D into the corner K1, the right movable portion 132c is pressed by the outer stringer M1 via the cushion member 131e and swings inward. Thereby, the front end surface 132ab of the suction port body 131 can be made to face the recess plate N on the first rotation tread plate RP1, and the left side surface 132ca of the right movable part 132c can be made to face the outer stringer M1. Therefore, the suction ports 31a and 132cc are close to the edge plate N including the acute corner K1 on the first circumferential tread plate RP1 and the side spar M1, and The resulting dust is sucked into the suction ports 31a and 132cc.

At this time as well, in the right movable portion 132c, the seal member 132ae prevents air from flowing in from gaps other than the suction port 132cc, thereby suppressing a decrease in the suction force of the suction ports 31a and 132cc.
Note that the front end surface 132ab of the suction port body 131 is made to face the recessed plate N of the first rotation tread plate RP1, and the left side surface 132ba of the left movable part 132b is made to face the inner stringer M2 to form an acute corner K2. The same applies to cleaning the sharp corner K3 of the third rotation plate RP3.

(Third embodiment)
In the first embodiment, the suction port body is provided with a corner entry part having one corner of a triangle as a corner part, but the corner entry part is not limited to a triangle, and may have a rod shape extending in the left-right direction, for example. Good too. Further, in this case, the suction port may be provided up to the rod-shaped corner entry portion, or a triangular corner portion may be provided at the tip of the rod-shaped corner entry portion.

(Fourth embodiment)
In the suction port bodies of the first and second embodiments, an electric rotating brush or a turbine brush may be provided at the suction port 31a. In this case, in the suction port body of the second embodiment, the electric rotating brush or the turbine brush is arranged so as not to interfere with the swinging of the left and right movable parts.

(summary)
The suction port body of the vacuum cleaner of the present invention includes a casing that can run on a surface to be cleaned,
The casing has a left end and a right end in the left-right direction, and has a suction port at the bottom facing the surface to be cleaned,
At least one of the left end and the right end has a corner that can be entered into a corner having an angle less than a right angle surrounded by the surface to be cleaned and two adjacent vertical surfaces on the surface to be cleaned. A corner entry portion is provided.
According to this configuration, for example, a corner having an angle smaller than a right angle in the tread of a staircase in a house, that is, a place where a stairway board (elevation) and a stringer (elevation) intersect at an angle less than a right angle. The corner part of the corner entry part of the suction port body can be entered into the corner part of the rotating footboard (surface to be cleaned) to clean it thoroughly. Therefore, it is no longer necessary to replace the suction port body and the attachment between cleaning the floor surface and cleaning the stairs as in the past.
In addition, the attachment can also be used when cleaning corners of floors other than stairs that are less than a right angle, that is, corners of floors (surfaces to be cleaned) where two adjacent walls (elevations) intersect at less than a right angle. It becomes possible to clean the suction port body without replacing it.

The suction port body of the vacuum cleaner of the present invention may be configured as follows, and these may be combined as appropriate.

- The corner entry portion has a front end face that can face one of the two vertical faces, and a side face that can face the other of the two vertical faces,
An angle of the corner formed by the front end surface and the side surface may be set to be smaller than a right angle.
According to this configuration, when cleaning a corner that is less than a right angle on the surface to be cleaned, dust from one vertical surface is sucked into the front part of the suction port of the suction port body, and the dust is sucked from the side of the suction port of the suction port body. Dust from the other side can be sucked into the area.

- The corner entry portion has a front end surface that can face one of the two vertical surfaces, and a side surface that can face the other of the two vertical surfaces, and the front end surface and the side surface The side surface may be configured to be movable so that the angle formed by the corner portion is smaller than a right angle.
According to this configuration, when cleaning a right-angled corner on the surface to be cleaned, dust from one vertical surface is sucked into the front part of the suction port of the suction port body, and the dust from the side of the suction port of the suction port body is sucked into the front part of the suction port of the suction port body. Dust from the other side can be sucked into the other side. In addition, when cleaning a corner that is less than a right angle on the surface to be cleaned, by entering the corner of the corner entry part of the suction port body into the corner, the angle of the corner of the corner entry part can be adjusted to the corner. The side surface moves to become smaller depending on the angle of the part and faces the other elevation. Thereby, the dust on one side of the vertical surface can be sucked into the front part of the suction port of the suction port body, and the dust on the side of the other vertical surface can be sucked into the side part of the suction port of the suction port body.

- The casing includes a main body portion having the front end surface and a movable portion having the side surface,
The corner entry portion includes a shaft portion that connects the movable portion to the main body portion at the corner portion so as to be swingable about an axis in the vertical direction, and a shaft portion that is movable in a direction that brings the angle of the corner portion closer to a right angle. a biasing member that biases the part;
The main body part may have a movable part storage space inside which can accommodate the movable part.
According to this configuration, the corner entry portion that can accommodate corners having various angles less than or equal to a right angle can be configured with a simple structure.

- The corner entry portion may be provided at the left end and the right end of the casing, respectively.
According to this configuration, the left corner entry section enters the corner on the left side in the forward direction of the suction port body, and the right corner entry section enters the corner on the right side for cleaning. I can do it. Therefore, it is convenient for the user to easily clean various corners of the room without significantly changing his or her position.

Note that the disclosed embodiments should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims rather than the above description, and it is intended that all changes within the meaning and range equivalent to the claims are included.

1 Vacuum cleaner 10 Vacuum cleaner body 11 Drive device (air blower)
12 Dust collector (dust collector)
20 Extension pipe (connection pipe)
30, 130 Suction port body 32, 132 Housing 31a Suction port 32a Bottom portion 32ba, 132ab Front end surface 32bb, 132ba Left side surface 32bc, 132ca Right side surface 32D, 132D Corner entry portion 32d, 132d Corner portion 132a Main body portion 132a a Right moving part Storage space 132ac Left movable part storage space 132b Left movable part 132c Right movable part 141 Shaft part 142 Biasing member K, K1 to K4 Corner M1 Outside stringer (elevation)
M2 Inner stringer (elevation)
N Kekomi board (elevation)
P Stepboard (surface to be cleaned)
RP1 to RP4 1st to 4th tread plate (surface to be cleaned)
θ1, θ2 angle

Claims (5)

Equipped with a housing that can run over the surface to be cleaned,
The casing has a left end and a right end in the left-right direction, and has a suction port at a bottom facing the surface to be cleaned at a position close to the surface to be cleaned,
At least one of the left end portion and the right end portion has a corner portion that can be entered into a corner having an angle equal to or less than a right angle surrounded by the surface to be cleaned and two adjacent vertical surfaces on the surface to be cleaned. A corner entry section is provided,
The corner entry portion has a front end face that can face one of the two vertical faces, and a side face that can face the other of the two vertical faces, and the front end face and the side face are the side surface is configured to be movable such that the angle of the corner portion formed by the corner portion is smaller than a right angle;
The casing includes a main body portion having the front end surface and a movable portion having the side surface,
The corner entry portion includes a shaft portion that connects the movable portion to the main body portion at the corner portion so as to be swingable about an axis in the vertical direction, and a shaft portion that connects the movable portion to the main body portion at the corner portion so as to be swingable about an axis in the vertical direction, and a shaft portion that is movable in a direction that brings the angle of the corner portion closer to a right angle. further comprising a biasing member that biases the part;
The front end surface is a surface extending straight in the left-right direction, and the suction port extends in the left-right direction along the front end surface to a position near the side surface,
When the corner entry portion enters an acute corner surrounded by the two vertical surfaces, the side surface changes from a substantially right angle to an acute angle at the corner formed by the front end surface and the side surface. A suction port body of a vacuum cleaner, which is characterized in that it moves in such a manner that The suction port body according to claim 1, wherein the corner entry portion has another suction port in the movable portion that faces the surface to be cleaned. The suction port body according to claim 1 or 2, wherein the main body portion has a movable part storage space therein in which the movable part can be stored. The suction port body according to any one of claims 1 to 3, wherein the corner entry portion is provided at the left end portion and the right end portion of the casing, respectively. An electric vacuum cleaner comprising: a vacuum cleaner main body having an air blowing section and a dust collecting section; and the suction port body according to any one of claims 1 to 4, which is connected to the vacuum cleaner main body directly or via a connecting pipe. Machine.

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