JP7190335B2 - Vacuum cleaner suction port body and vacuum cleaner provided with the same - Google Patents

Description

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

As a suction port body of a conventional electric vacuum cleaner, for example, Patent Document 1 discloses a nozzle body, a bottom portion to which a disposable mop is detachably attached, and a suction port provided between the front of the bottom portion and the nozzle body. Nozzles for disposable mop vacuum cleaners having

Utility Model Registration No. 3036657

In the conventional suction port, the disposable mop contacts the floor (flooring) over a large area, so friction with the floor increases during cleaning, and the operability of moving the suction port in the front, rear, left, and right directions becomes poor. As a countermeasure for this problem, instead of attaching a disposable mop to the bottom surface of the suction port, it is conceivable to provide a structure in which a roller and a raising cloth are provided on the bottom surface so that the bottom surface is lifted from the floor surface. improve sexuality. However, in this structure, air is sucked from the entire periphery of the suction port, so the suction force on the front side of the suction port is reduced. Furthermore, since the suction port body has a structure that attracts dust so as to collect dust in the middle portion in the left-right direction of the suction port, the suction force on the left and right end sides far from the middle portion of the suction port is weak. Therefore, when the suction port body is moved forward, it becomes difficult to suck in the dust in front, particularly the dust on the left and right end sides, with a strong suction force.

SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and an object of the present invention is to provide a suction port body for a vacuum cleaner with improved cleaning performance, and a vacuum cleaner having the same.

According to the present invention, there is a first bottom surface configured to face the surface to be cleaned with a first gap, and a second gap adjacent to the first bottom surface on the forward side in the traveling direction and wider than the first gap. a second bottom surface configured to face the surface to be cleaned; and a suction port provided in the middle portion in the left-right direction with respect to the traveling direction near the boundary between the first bottom surface and the second bottom surface,
A vacuum cleaner suction port body is provided in which the second bottom surface is formed such that the second gap narrows from the middle portion in the left-right direction toward both ends.
Moreover, according to this invention, the vacuum cleaner provided with the said suction port body is provided.

According to the suction port body of the electric vacuum cleaner of the present invention, it becomes easy to maintain a strong suction force on the front side of the suction port, and furthermore, a strong suction force is maintained at both ends far from the suction port in the left-right direction. easier to do.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the vacuum cleaner (Embodiment 1) provided with the suction port body of this invention. FIG. 2 is a perspective view of a dust collector in the electric vacuum cleaner of FIG. 1; FIG. 2 is a front view of a suction port body in the electric vacuum cleaner of FIG. 1; 2 is a bottom view of the suction port body in the electric vacuum cleaner of FIG. 1; FIG. FIG. 5 is a cross-sectional view taken along line II of FIG. 4; FIG. 5 is a cross-sectional view taken along the line II-II of FIG. 4; FIG. 5 is a cross-sectional view taken along line III-III in FIG. 4; It is a figure explaining the state which sucks dust in the suction port body of Embodiment 1, (A) is the state seen from the front side, (B) is the state seen from the bottom side. It is a figure explaining the state which sucks dust in the suction port body of Embodiment 2, (A) is the state seen from the front side, (B) is the state seen from the bottom side. It is a figure explaining the state which sucks dust in the suction port body of Embodiment 3, (A) is the state seen from the front side, (B) is the state seen from the bottom side.

(Embodiment 1)
FIG. 1 is a perspective view showing an electric vacuum cleaner (Embodiment 1) provided with a suction port body of the present invention, and FIG. 2 is a perspective view of a dust collector in the electric vacuum cleaner of FIG. In FIG. 1, arrows indicate the front, rear, left, right, up and down directions of the electric vacuum cleaner.
This electric vacuum cleaner A comprises a cleaner main body 10 having a drive section 1 containing an electric blower 1b and a dust collection section 2 detachably attached to the drive section 1; and a suction port body 3 connected via a hinge member 7, and a rod-shaped handle 4 connected to the upper portion of the driving portion 1.

The drive unit 1 has a streamlined housing 1a that is elongated in the vertical direction, and the housing 1a accommodates the electric blower 1b and a battery (not shown). A power switch 1ac is provided on the front surface of the housing 1a.
The housing 1a is provided with a mounting recess 1c that opens from the front to the left and right sides so that the dust collecting section 2 can be detachably mounted on the lower half of the front side of the housing 1a. 7 (see FIGS. 1 and 5) and a pair of front and rear connecting pieces 1ae connected via rivets 8 are provided so as to protrude downward. A circular hole is formed in each of the pair of connecting pieces 1ae.

Further, in the housing 1a, the bottom 1ca of the mounting recess 1c is provided with a first ventilation passage 1cb connected to the suction port body 3 via a flexible hose 6, and the ceiling 1cc of the mounting recess 1c is provided with a housing. A second ventilation passage 1cd is provided to communicate with the internal space of the upper half of the body 1a, and the electric blower 1b is accommodated in the second ventilation passage 1cd.

An exhaust port 1aa is provided on the rear surface of the upper half of the housing 1a, and the air is exhausted to the outside from the exhaust port 1aa after passing through the second ventilation path 1cd.
In addition, a bottomed cylindrical handle connection portion 1ab is provided at the upper end of the housing 1a, and a locking recess (not shown) at the lower end of the handle 4 can be engaged and disengaged from the upper rear surface of the handle connection portion 1ab. A push button 1af having a locking pawl (not shown) for locking is provided. A power switch 4a on the hand side is provided on the upper portion of the handle 4. As shown in FIG.

While pressing the push button 1af, the handle 4 can be pulled out from the handle connecting portion 1ab. For example, when cleaning stairs or a shelf, the handle 4 can be pulled out from the cleaner body 10 to change from a stick type to a handy type, and the cleaner body 10 can be cleaned by holding the handle connecting portion 1ab. can.

The dust collection part 2 has a dust collection cup 2a having an upper opening 2aa and a filter 2b detachably housed in the dust collection cup 2a.
The dust collecting cup 2a has an air inlet (not shown) connected to the first ventilation passage 1cb when the dust collecting portion 2 is mounted in the mounting recess 1c of the driving portion 1. As shown in FIG. This air inlet is formed in a short tubular shape protruding upward from the bottom of the dust collection cup 2a, and a check valve (not shown) is provided at the upper end of the short tubular shape. That is, when air containing dust flows into the dust collection cup 2a from the air inlet, the check valve opens, and when the air flow stops, the check valve closes so that the dust does not return to the air inlet. It's becoming

Further, the dust collection cup 2a has a plurality of ribs 2ad on the inner surface near the upper opening 2aa on which an outer flange 42ba of an elastic frame 2ba (to be described later) of the filter 2b is placed.
A slide member 12ae having an engaging claw 112ae and a lock mechanism 2ae having a compression coil spring (not shown) as an urging member are provided on the front surface of the upper end of the dust collecting cup 2a. , a projection 2af (not shown) that can be engaged with a recess (not shown) provided around the bottom 1ca of the mounting recess 1c of the drive unit 1 is provided.

A slide member 12ae of the lock mechanism 2ae is vertically slidable and is biased upward by a compression coil spring (not shown).
On the other hand, near the upper edge of the mounting recess 1c in the housing 1a of the drive unit 1, a locking claw 112ae of the locking mechanism 2ae of the dust collecting cup 2a mounted in the mounting recess 1c is detachably locked (not shown). A locking recess is provided.

When the dust collecting cup 2a is attached to the mounting recess 1c of the drive unit 1, the lower protrusion 2af of the dust collecting cup 2a is engaged with the recess (not shown) of the bottom 1ca of the mounting recess 1c, and the lock mechanism 2ae is engaged. The locking claw 112ae is locked in the locking recess (not shown) near the upper edge of the mounting recess 1c. When the dust collecting cup 2a is removed from the mounting recess 1c of the drive unit 1, the locking claw 112ae is engaged by sliding the sliding member 12ae of the locking mechanism 2ae downward against the biasing force of a compression coil spring (not shown). Since the dust collecting cup 2a is removed from the retaining recess (not shown), it can be removed from the mounting recess 1c by pulling out the dust collecting cup 2a while sliding the slide member 12ae downward.

The filter 2b has an elastically deformable, substantially cup-shaped elastic frame 2ba, and a bag-like filter main body 2bb provided on the surface (outer surface) of the elastic frame 2ab on the dust collection cup 2a side.
The elastic frame body 2ba includes a short cylindrical portion 12ba, a frame portion 22ba that is continuously provided so as to be suspended from the lower end edge of the short cylindrical portion 12ba, and an inverted U shape that is continuously provided to project upward from the bottom portion of the frame portion 22ba. and an outer brim portion 42ba connected to the outer peripheral surface of the short cylindrical portion 12ba. At least the frame portion 22ba is made of an elastically deformable material (for example, resin).

When the dust collected in the dust collecting section 2 is discarded, the dust collecting cup 2a is removed from the driving section 1, placed on the floor or a table, and the knob 32ba is pulled up while pressing the outer flange 42ba of the filter 2b. The frame portion 22ba is elastically deformed. Thereafter, when the grip portion 32ba is released, the frame portion 22ba is restored to its original shape. At this time, the frame portion 22ba collides with the filter main body 2bb, so that the dust adhering to the outer surface of the filter main body 2bb is shaken off into the dust collection cup 2a. By repeating this process a plurality of times, the filter main body 2bb can be cleanly dust-removed. After that, the filter 2b is removed from the dust collection cup 2a (see FIG. 2), and the dust in the dust collection cup 2a is discarded.

<Inlet body>
3 is a front view of the suction port of the vacuum cleaner of FIG. 1, and FIG. 4 is a bottom view of the suction port of the vacuum cleaner of FIG. 5 is a cross-sectional view taken along the line II of FIG. 4, FIG. 6 is a cross-sectional view taken along the line II-II of FIG. 4, and FIG. 7 is a cross-sectional view taken along the line III-III of FIG. is. In addition, in FIG. 4, the front, rear, left, and right directions of the suction port are indicated by arrows.

As shown in FIGS. 1 and 3 to 7, the suction port body 3 includes a lower case 3a forming a lower portion and an upper case 3b forming an upper portion.
The lower case 3a includes a bottom wall portion 3aa that is elongated in the left-right direction, a peripheral wall portion (bumper) 3ab that is continuous with the peripheral portion excluding the rear end of the bottom wall portion 3aa, and a rear end of the bottom wall portion 3aa. A roller 13ac is rotatably attached to the bottom surface of the roller holding portion 3ac facing the surface F to be cleaned, so that the roller 13ac can rotate about its axis in the left-right direction.

In the lower case 3a, a first bottom surface 13aa and a second bottom surface 33aa adjacent to the front side of the first bottom surface 13aa via a first stepped surface 23aa are formed on the bottom surface of the bottom wall portion 3aa facing the surface to be cleaned F. , and a third bottom surface 53aa adjacent to the second bottom surface 33aa via a dust receiving surface 43aa as a second stepped surface. The front end side of the third bottom surface 53aa is the front end portion 13ab of the peripheral wall 3ab of the lower case 3a. Moreover, the surrounding wall 3ab is a bumper for absorbing impact when the suction port body 3 collides with a wall surface or the like.

The first bottom surface 13aa faces the surface to be cleaned F (for example, flooring) with a first gap S1, and the second bottom surface 33aa faces the surface to be cleaned F with a second gap S2 that is vertically wider than the first gap S1. is doing.
The first bottom surface 13aa has a substantially constant first gap S1, while the second bottom surface 33aa has a second gap S2 that narrows in the vertical direction from the middle portion 133aa in the horizontal direction toward both ends ( See Figure 3). That is, while the first bottom surface 13aa is flat as a whole, the second bottom surface 33aa has a substantially arched shape that protrudes upward when viewed from the front.

Further, in the case of the first embodiment, the intermediate portion 133aa of the second bottom surface 33aa has a width substantially equal to the lateral width of the suction port 3c and is a flat surface substantially parallel to the surface F to be cleaned. , the flat surface portion thereof is widest at the second gap S2. In addition, the second bottom surface 33aa has a flat inclined surface or a curved surface gently convex upward when viewed from the front, from the left and right ends to the intermediate portion 133aa.
As an example, the first gap S1 can be set to about 0.5 mm, and the second gap S2 can be set to a range of about 1 mm to 3 mm, but the dimensions are not limited to these.

Further, in the lower case 3a, a suction port 3c is provided in the middle portion in the left-right direction near the boundary between the first bottom surface 13aa and the second bottom surface 33aa. In the case of Embodiment 1, the suction port 3c is elliptical, but the shape of the suction port 3c is not particularly limited, and may be circular, rectangular, or the like.
When viewed in plan (see FIG. 4), the second bottom surface 33aa is provided inside the left and right end portions of the first bottom surface 3aa, and the width in the front-rear direction increases from the intermediate portion in the left-right direction toward both end portions. It is formed in a shape that narrows.
In addition, when viewed in plan, the front portion of the suction port 3c protrudes from the intermediate portion of the second bottom surface 33aa, and the first step surface 23aa approaches the left and right sides of the suction port 3c while gently curving. It has a convex curved surface portion connected to the rib 3f.

The first stepped surface 23aa is recessed rearward from both ends in the left-right direction toward the intermediate portion, and the intermediate portion of the first stepped surface 23aa forms the rear peripheral edge of the suction port 3c (see FIG. 4).
Further, the dust receiving surface 43aa as a second stepped surface is also recessed rearward from both ends in the left-right direction toward the intermediate portion 143aa. The dust-receiving surface 43aa is a surface on which relatively large dust hits when the suction port body 3 is moved forward during cleaning, which will be described later in detail.

A pair of left and right raising lints 3d are provided on the flat surface portions of the first bottom surface 13aa on the left and right outer sides of the second bottom surface 33aa.
The pair of left and right raised cloths 3d and the roller 13ac support the suction port body 3 so that the first gap S1 between the first bottom surface 13aa and the surface F to be cleaned is approximately a predetermined value.
Further, a rib 3f is provided on the first bottom surface 13aa from the left and right peripheral edge portions to the rear peripheral edge portion of the suction port 3c so as to approach the surface to be cleaned F with a third gap S3 vertically narrower than the first gap S1. (see Figures 3-5).
A raised brush 3e extending in the left-right direction is provided behind the suction port 3c on the first bottom surface 13aa.

Further, as shown in FIG. 5, a short cylindrical connecting portion 3g that protrudes rearward as it goes upward is provided on the periphery of the suction port 3c on the upper surface of the bottom wall portion 3aa of the lower case 3a. This connection portion 3g and the first ventilation passage 1cb of the driving portion 1 of the cleaner body 10 are connected by a flexible hose 6 (see FIG. 1).
Further, as shown in FIGS. 6 and 7, a pair of left and right support plates 3h are provided facing each other on both left and right sides of the connecting portion 3g on the upper surface of the bottom wall portion 3aa of the lower case 3a. Circular bosses 3ha are formed on the support plate 3h on the same axis in the horizontal direction. A hinge member 7, which will be described later, is connected to the pair of left and right circular boss portions 3ha.

As shown in FIGS. 1 and 5 to 7, the hinge member 7 includes an upper connecting portion 7a that is U-shaped when viewed in the left-right direction, and an inverted U-shaped upper connecting portion 7a connected to the upper connecting portion 7a when viewed in the front-rear direction. and a lower connecting portion 7b.
In the hinge member 7, a pair of front and rear plate-like portions 7aa protruding upward from the upper connecting portion 7a are formed with a pair of front and rear circular holes 17aa on the same axial center in the front-rear direction, and extend downward from the lower connecting portion 7b. A pair of left and right circular holes 17ba are formed on the same axial center in the left and right direction in the pair of projecting left and right plate-like portions 7ba.

When the hinge member 7 is connected to the driving portion 1 of the cleaner main body 10, the pair of front and rear plate-like portions 7aa of the upper connecting portion 7a of the hinge member 7 are placed outside and overlapped with the pair of front and rear connecting pieces 1ae of the driving portion 1. Then, the circular hole 17aa of the superimposed front side plate-like portion 7aa and the circular hole (not shown) of the connecting piece 1ae are communicated with each other, and the rivets 8 are passed through the communicating holes and crimped to connect (see FIG. 1). ). Also, the rivets 8 are similarly passed through the circular hole 17aa of the plate-like portion 7aa on the rear side and the circular hole (not shown) of the connecting piece 1ae, and are connected by crimping.

Further, when connecting the hinge member 7 to the suction port body 3, the pair of left and right plate-like portions 7ba of the lower connecting portion 7b of the hinge member 7 are placed inside and overlapped with the pair of left and right support plates 3h of the suction port body 3. , the circular hole 17ba of the stacked plate-like portion 7ba on the right side and the circular boss portion 3ha of the support plate 3h are communicated with each other, and a rivet (not shown) is passed through the communicating holes and crimped for connection. Also, a rivet (not shown) is similarly passed through the circular hole of the stacked left plate-like portion (not shown) and the circular hole of the supporting plate (not shown) to connect them.
As a result, the suction port body 3 can swing in the front-rear direction about the axis in the left-right direction with respect to the cleaner body 10 via the hinge member 7, and can swing left and right about the axis in the front-rear direction. It becomes possible to swing in the direction.

<About the operation of the vacuum cleaner>
The operation of the electric vacuum cleaner A of Embodiment 1 configured in this way will be described with reference to FIGS. 1 to 8. FIG. 8A and 8B are diagrams illustrating a state of sucking dust by the suction port body of Embodiment 1, where (A) is a state viewed from the front side and (B) is a state viewed from the bottom side.
When cleaning (cleaning) the floor or the like, by pressing the power switch 1ac or 4a of the vacuum cleaner A, the electric blower 1b is driven and the inside of the drive unit 1 becomes negative pressure, thereby containing dust from the suction port 3c. Air flows into the suction port body 3 . At this time, the first gap S1 of the first bottom surface 13aa of the suction port body 3 is made smaller than the second gap S2 of the second bottom surface 33aa, and the cover is covered with a third gap S3 narrower than the first gap S1 in the vertical direction. By providing the ribs 3f close to the cleaning surface F from the left and right sides to the rear of the suction port 3c, air containing dust is easily sucked from the front portion of the suction port 3c. Further, in the second gap S2, since the left and right end portions are narrower than the middle portion, the reduction in the suction force at the left and right end portions of the second gap S2 far from the suction port 3c is suppressed.

Air containing dust that has flowed into the suction port body 3 passes through the flexible hose 6 and the first ventilation passage 1cb of the drive unit 1 and flows into the dust collection cup 2a of the dust collection unit 2 from the air inlet 2ab. . In the dust collecting portion 2, the dust that has flowed into the dust collecting cup 2a is captured by the filter main body 2bb, and the dust-removed air passes through the filter main body 2bb and flows into the second ventilation passage 1cd of the driving portion 1, The air is exhausted to the outside from the exhaust port 1aa. When the power switch 1ac or 4a is pressed again, the electric blower 1b is stopped.

As shown in FIGS. 3, 4, 8A and 8B, when the suction port 3 advances in the direction of the arrow A on the surface to be cleaned F (for example, flooring) to suck dust, the dust is Dust particles D1 and D2 of different sizes that hit the dust receiving surface 43aa because they are larger than the first gap S1 may be included therein. In the description here, the sizes of these dusts D1 and D2 are assumed to be smaller than the height of the widest intermediate portion 133aa of the second gap S2.

When these large and small dust particles D1 and D2 are in front of the intermediate portion 143aa of the dust receiving surface 43aa, the dust particles D1 and D2 are sucked straight toward the suction port 3c without hitting the dust receiving surface 43aa.
Also, when large and small dust particles D1 and D2 hit the dust receiving surface 43aa on the right and left end sides of the dust receiving surface 43aa, the dust receiving surface 43aa is recessed rearward toward the middle portion 143aa in the left and right direction, so that the dust receiving surface 43aa is not sucked. As the opening 3 advances, the dust D1 and D2 moves toward the intermediate portion 143aa along the dust receiving surface 43aa. When the dusts D1 and D2 that have moved reach the second gap S2 having a width (height from the surface to be cleaned F) through which they can pass, they are sucked into the suction port 3c from there. At this time, the large dust D2 moves to a position closer to the intermediate portion 143aa than the small dust D1 and is sucked into the suction port 3c.
Note that when the dust hitting the dust receiving surface 43aa is larger than the widest point of the second gap S2 (the point where the intermediate portion 133aa of the second bottom surface 33aa has the highest height from the surface to be cleaned F), the user must The dust can be sucked into the suction port 3c by slightly lifting the front portion of the mouthpiece 3.

(Embodiment 2)
9A and 9B are diagrams illustrating a state of sucking dust with the suction port body of Embodiment 2, where (A) is a state viewed from the front side, and (B) is a state viewed from the bottom side. In addition, in FIGS. 9A and 9B, elements similar to those in FIGS. 8A and 8B are denoted by the same reference numerals.
The suction port body 3X of the second embodiment is configured in substantially the same manner as the suction port body 3 of the first embodiment, except that the configuration of the second bottom surface 33aa is different from that of the first embodiment. In the following, differences of the second embodiment from the first embodiment will be mainly described.

In the suction port body 3X of Embodiment 2, the widest part of the second gap S2 of the suction port body 3 described in Embodiment 1 (FIGS. 3, 4, 8, etc.), that is, the intermediate portion of the second bottom surface 33aa It is configured to be able to suck dust D3 slightly larger than the height of 133aa from the surface F to be cleaned.
Specifically, in the suction port body 3X, a groove portion 233aa in the front-rear direction is provided in a range extending from the dust receiving surface 43aa in the intermediate portion 133aa of the second bottom surface 33aa to the suction port 3c.
The height H of the groove portion 233aa from the surface to be cleaned F is higher than the height of the intermediate portion 133aa of the second bottom surface 33aa from the surface to be cleaned F (the widest portion of the second gap S2). , and about 4 mm. Further, the width W of the groove portion 233aa in the horizontal direction is also about 4 mm. Note that the height H and width W of the groove 233aa are not limited to these dimensions.

By providing the groove portion 233aa in the front-rear direction in the middle portion 133aa of the second bottom surface 33aa in this way, when the suction port body 3X advances in the direction of the arrow A on the surface to be cleaned F (for example, flooring), the dust D3 is sucked. Even if the dust D3 is larger than the second gap S2, it is sucked into the suction port 3c as long as it is large enough to pass through the groove 233aa. If the dust is too large to pass through the groove 233aa, the dust can be sucked into the suction port 3c by slightly lifting the front portion of the suction port body 3 by the user.

(Embodiment 3)
10A and 10B are diagrams illustrating a state of sucking dust by the suction port body of Embodiment 3, where (A) is a state viewed from the front side, and (B) is a state viewed from the bottom side. In FIGS. 10A and 10B, elements similar to those in FIGS. 8A and 8B are denoted by the same reference numerals.
The suction port body 3Y of Embodiment 3 is configured in substantially the same manner as the suction port body 3 of Embodiment 1, except that the configuration of the second bottom surface 333aa is different from that of Embodiment 1. In the following, differences of the third embodiment from the first embodiment will be mainly described.

In the suction port body 3Y of Embodiment 3, the second bottom surface 333aa is formed stepwise.
Specifically, the second bottom surface 333aa is formed in a stepped shape so that the second gap S2 becomes narrower from the intermediate portion in the left-right direction toward both end portions. The widest height and the narrowest height of the second gap S2 in the third embodiment are set to be the same as the widest height and the narrowest height of the second gap S2 in the first embodiment.
The suction port body 3Y of Embodiment 3 configured in this way also has the same effects as the suction port body 3 of Embodiment 1.

(Embodiment 4)
The groove portion 233aa (see FIG. 9) described in the second embodiment may be provided in the middle portion in the left-right direction of the second bottom surface 333aa in the suction port body 3Y of the third embodiment.

(Other embodiments)
1. In the suction port bodies of Embodiments 1 to 3, the ribs are provided from the left and right portions around the suction port on the first bottom surface to the rear portion, but the ribs may be omitted. Alternatively, the ribs may be provided along the first stepped surface from both ends in the left-right direction of the first stepped surface on the first bottom surface to the rear portion around the suction port. Furthermore, the raised brush 3e (see FIG. 4) behind the suction port may be omitted, and the raised brush may be provided at the position of the rib. In this case, the raised brush may surround the rear portion and left and right portions of the suction port, and extend to the boundary region between the first bottom surface and the second bottom surface.

2. In the suction port bodies of Embodiments 1 to 3, the case where the dust receiving surface is recessed rearward from the left and right ends toward the intermediate portion is exemplified, but the dust receiving surface may be a straight flat surface in the left and right direction. Note that even if the dust receiving surface is a flat surface that is straight in the left-right direction, if the dust is large enough to pass through the dust receiving surface, it can be sucked up to the suction port.

3. In the suction port bodies of Embodiments 1 to 3, a pair of raised cloths are provided at both left and right ends of the front portion of the first bottom surface, and a roller is provided at the rear portion, and the first bottom surface is separated from the surface to be cleaned at these three points. Although the case of being supported with one gap has been exemplified, instead of the pair of left and right raising cloths, wheels having a shorter width in the axial direction than the rollers may be used. Furthermore, the rollers may also be replaced with wheels. By doing so, it is possible to move the suction port body on the carpet or tatami mats with a small frictional resistance for cleaning.

4. In Embodiments 1 to 3, stick-type vacuum cleaners in which the suction port is connected to the cleaner body by a flexible hose and a hinge member were exemplified, but the suction port of the present invention is applicable to other vacuum cleaners. is also applicable. In this case, a joint functioning as a hinge member and a connecting pipe part connected to the joint functioning as a flexible hose are provided integrally with the suction port body, and the connection pipe portion of the suction port body is It may be used by being detachably connected to an extension pipe of a canister type vacuum cleaner. Alternatively, the connection tube of the suction port may be detachably connected to the vacuum cleaner body having a hand handle directly or via an extension tube, and used as a handy, stick, or canister vacuum cleaner. .

(summary)
The suction port body of the vacuum cleaner of the present invention has a first bottom surface configured to face a surface to be cleaned with a first gap, and is adjacent to the first bottom surface on the forward side in the traveling direction and from the first gap. a second bottom surface configured to face the surface to be cleaned with a wide second gap; having a mouth and
The second bottom surface is formed such that the second gap narrows from the intermediate portion in the left-right direction toward both ends.
According to this configuration, it becomes easier for air containing dust to flow in from the front side of the suction port, so it becomes easier to maintain a strong suction force on the front side of the suction port. Furthermore, since the second gap in front of the suction port narrows in the vertical direction from the middle portion in the horizontal direction of the second bottom surface toward both ends, suction is applied at both ends that are far from the suction port in the horizontal direction. The flow speed of the air becomes faster, making it easier to maintain a strong suction force. Therefore, the cleaning performance can be improved by connecting the suction port body of the present invention to the main body of the vacuum cleaner.

The suction port body of the vacuum cleaner of the present invention may be configured as follows, or may be combined as appropriate.
(1) Even if ribs are provided on the first bottom surface from the left and right positions around the suction port to the rear position so as to be close to the surface to be cleaned with a third gap narrower in the vertical direction than the first gap. good.
According to this configuration, since the ribs can suppress air suction from the left, right, and rear sides of the suction port, air can be efficiently suctioned from the front side of the suction port.

(2) further comprising a dust receiving surface provided along the front end of the second bottom surface and facing forward;
The dust-receiving surface may be recessed rearward from both end portions in the left-right direction toward the intermediate portion when viewed in a plan view.
According to this configuration, by advancing the suction port body, the dust hitting the dust receiving surface can be guided to the middle portion side in the left-right direction where the second gap is wide, and the dust is efficiently sucked into the suction port. It can be carried out.

(3) A groove may be provided in a range extending from the dust receiving surface to the suction port in the intermediate portion of the second bottom surface.
According to this configuration, dust larger than the widest part of the second gap can be sucked into the suction port through the groove.

(4) In the first bottom surface, a pair of left and right flat surface portions are provided on the outer side of both ends in the left-right direction of the second bottom surface, and a pair of left and right raised rugs are provided on the pair of left and right flat surface portions, and , a roller is rotatably provided at the rear,
The first bottom surface may be supported on the surface to be cleaned with the first gap by the pair of left and right raised cloths and the roller.
According to this configuration, the first gap between the first bottom surface of the suction port and the surface to be cleaned has a predetermined narrow gap size by means of a pair of left and right raised cloths and rollers, which are simple in configuration. The suction port can be supported, and the usability can be improved by reducing the frictional resistance between the suction port and the surface to be cleaned (for example, flooring).

It should be noted that the disclosed embodiments should be considered as examples and not restrictive in all respects. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

3, 3X, 3Y suction port body 3c suction port 3d raised cloth 3f rib 13aa first bottom surface 13ac roller 33aa second bottom surface 43aa dust receiving surface 133aa intermediate portion 143aa intermediate portion 233aa groove portion A electric vacuum cleaner F surface to be cleaned S1 first gap S2 Second gap S3 Third gap

Claims (6)

a first bottom surface configured to face the surface to be cleaned with a first gap;
a second bottom surface adjacent to the first bottom surface on the forward side in the traveling direction and configured to face the surface to be cleaned with a second gap wider than the first gap;
A short cylindrical connection that is provided at an intermediate portion in the left-right direction with respect to the traveling direction near the boundary between the first bottom surface and the second bottom surface, faces the surface to be cleaned, and protrudes rearward toward the peripheral edge as it goes upward. a suction port provided with a part ,
The second bottom surface is formed such that the second gap narrows from the intermediate portion in the left-right direction toward both ends ,
When viewed in plan, the second bottom surface is provided inside both left and right ends of the first bottom surface, and has a shape in which the width in the front-rear direction becomes narrower from the middle portion in the left-right direction toward both ends, and The intermediate portion in the left-right direction is formed in a shape having the widest width in the front-rear direction,
an intermediate portion of the second bottom surface has a width substantially equal to the lateral width of the suction port;
A rib is provided on the first bottom surface from the left and right positions around the suction port to the rear position so as to be close to the surface to be cleaned with a third gap narrower in the vertical direction than the first gap. vacuum cleaner suction port body. further comprising a dust receiving surface provided along the front edge of the second bottom surface and facing forward;
2. The suction port body according to claim 1, wherein the dust receiving surface is recessed rearward from both end portions in the left-right direction toward the intermediate portion when viewed in a plan view. A first bottom surface configured to face the surface to be cleaned with a first gap, and a second gap adjacent to the first bottom surface on the forward side in the traveling direction and facing the surface to be cleaned with a second gap wider than the first gap. and a suction port provided in an intermediate portion in the left-right direction with respect to the traveling direction in the vicinity of the boundary between the first bottom surface and the second bottom surface,
The second bottom surface is formed such that the second gap narrows from the intermediate portion in the left-right direction toward both ends,
further comprising a dust receiving surface provided along the front edge of the second bottom surface and facing forward;
A suction port for a vacuum cleaner, wherein the dust receiving surface is recessed rearward from both ends in the left-right direction toward an intermediate portion when viewed in a plan view. 4. A rib is provided on the first bottom surface from the left and right positions around the suction port to the rear position so as to be close to the surface to be cleaned with a third gap narrower in the vertical direction than the first gap. A suction mouth body as described. In the first bottom surface, a pair of left and right flat surface portions are provided on the outside of both ends in the left-right direction of the second bottom surface, and a pair of left and right raised rugs are provided on the pair of left and right flat surface portions, and A roller is rotatably provided,
The suction port body according to any one of claims 1 to 4, wherein the first bottom surface is supported on the surface to be cleaned with the first gap by the pair of left and right raised cloths and the roller. A vacuum cleaner comprising the suction port body according to any one of claims 1 to 5.

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