WO2020262599A1

WO2020262599A1 - Electric vacuum cleaner

Info

Publication number: WO2020262599A1
Application number: PCT/JP2020/025179
Authority: WO
Inventors: 将矢野; 大林　史朗; 孝徳小野瀬; 俊中野; 孔陽川本; 大史横山; 敦史倉田; 叶登佐藤
Original assignee: 日立グローバルライフソリューションズ株式会社
Priority date: 2019-06-26
Filing date: 2020-06-26
Publication date: 2020-12-30
Also published as: CN113993432A; CN113993432B; JP2021003270A; JP7244370B2

Abstract

According to the present invention, there can be provided an electric vacuum cleaner with excellent maintenance property, wherein: since dusts are compressed inside a bevel part, collected amount of dusts can be increased and floating return of dusts from a dust collection accumulation part to a collection separation part is suppressed, dust separation properties are improved and hair is prevented from being tangled to an air intake part; since dusts are compressed inside the bevel part, upward floating of dusts is suppressed during discharge of dusts; and since dusts adhered to a bypass filter (filter 2) are discharged simultaneously with the disposal of dusts, labor for filter cleaning can be reduced.　A dust collection device for this electric vacuum cleaner has: an air intake part having a substantially cylindrical first filter on an upper section of an inner barrel; and an opened bevel part below the air intake part, wherein the air intake part and the bevel part communicate with each other via a second filter, and the bevel part is provided with a sliding mechanism that protrudes toward an opening when a bottom lid is open.　

Description

Vacuum cleaner

The present invention relates to a vacuum cleaner.

Conventionally, there are roughly two types of dust collectors: a paper pack type dust collector that compresses sucked dust into a paper pack, and a cyclone type dust collector that centrifuges by a swirling airflow and stores it in the dust collector. There is a method. Since the cyclone method generates a swirling airflow, the maintenance work of the dust collector tends to increase as compared with the paper pack method.

Japanese Patent Application Laid-Open No. 2007-167450 (Patent Document 1) describes a swirl chamber that separates sucked dust and suction air by centrifugal force, and a swirl chamber located between the swirl chamber and an electric blower to provide suction air after passing through the swirl chamber. Electricity having a filter chamber for filtering and a dust chamber for accumulating separated dust, the dust chamber side of the filter chamber or the swirl chamber is a substantially flat surface, and the flat portion is provided with a bypass passage communicating with the dust chamber. The dust collection unit of the vacuum cleaner is described.
Japanese Patent Application Laid-Open No. 2015-204925 (Patent Document 2) states that a vacuum cleaner main body including a main body intake port and an electric blower that generates suction force is detachable between the main body intake port and the electric blower. It has a dust collector, and the dust collector has a substantially cylindrical outer cylinder forming an outer shell and an inner cylinder in the outer cylinder substantially concentrically with the outer cylinder, and opens and closes at the lower part of the outer cylinder. A vacuum cleaner with a possible bottom lid, the inner cylinder is a substantially cylindrical frame with a filter at the top, and has an umbrella part with an open bottom at the bottom, and the umbrella part has almost the same shape. An inner umbrella portion that fits inside is provided, and a cylinder extending to the bottom lid is formed in the inner umbrella portion substantially concentrically with the inner cylinder, and the inner umbrella portion protrudes in the opening direction when the bottom lid is opened. A vacuum cleaner with a sliding mechanism is described.

Japanese Unexamined Patent Publication No. 2006-346141 JP-A-2015-204925

The vacuum cleaner described in Patent Document 1 compresses the dust in the dust chamber, prevents the dust accumulated in the dust chamber from flying up and flowing back into the swirl chamber and entering the filter chamber, while preventing the dust from entering the filter chamber. The purpose is to reduce the number of discharge operations and provide an easy-to-use vacuum cleaner.

The purpose of the vacuum cleaner described in Patent Document 2 is to provide an easy-to-use vacuum cleaner that can discharge dust in a dust collecting container without touching it when disposing of dust.

However, in the vacuum cleaner described in Patent Document 1, since the filter portion is fixed, dust adhering to the bypass filter may be difficult to remove when throwing away the dust.

Further, in the vacuum cleaner described in Patent Document 2, since the filter portion is fixed even when the dust is disposed of, the dust adhering to the filter may be difficult to remove when the dust is disposed of.

The present invention solves the above-mentioned problems. When the filter unit slides when the dust is disposed of, the dust adhering to the filter is discharged at the same time as the accumulated dust when the dust is disposed of, and the filter can be cleaned. The purpose is to provide an electric vacuum cleaner that can reduce the trouble.

In order to solve the above problems, the dust collector of the vacuum cleaner of the present invention has an intake portion having a substantially tubular first filter in the upper part of the inner cylinder, and an umbrella portion opened in the lower part thereof. , The intake part and the umbrella part communicate with each other through a second filter provided on the upstream side of the umbrella part, and the umbrella part is a sliding mechanism that protrudes in the opening direction when the bottom lid is opened. Equipped with.

According to the present invention, since the dust is compressed inside the umbrella portion, the amount of dust collected can be increased, and the return of dust from the dust collecting portion to the dust collecting separating portion can be suppressed to improve the dust separation performance. Since the wrapping of hair etc. around the intake part is suppressed and the dust is compressed inside the umbrella part, the dust is prevented from flying up when the dust is discharged, and at the same time as the dust is thrown away, it adheres to the bypass filter (filter 2). Since dust is discharged, it is possible to provide an electric vacuum cleaner with good maintainability, which can reduce the trouble of cleaning the filter.

The external perspective view of the vacuum cleaner of embodiment which concerns on this invention. A side view of a state in which the extension pipe is removed from the vacuum cleaner of the embodiment. Top view with the extension pipe removed from the vacuum cleaner. External perspective view with the dust collector and suction hose removed from the vacuum cleaner body. A perspective view of the vacuum cleaner body with the upper and lower cases removed. FIG. 3 is a sectional view taken along line I-I of FIG. 3 when the vacuum cleaner body is viewed from the side. Front view of the dust collector. Top view of the dust collector 10. II-II cross section of FIG. 7A. An exploded perspective view of the lid viewed diagonally from above and behind. An exploded perspective view of the lid from the right side An exploded perspective view of the lid viewed diagonally from the upper left rear A perspective view of the lid base viewed diagonally from above and behind. A perspective view of the lid base viewed diagonally from the upper left to the front. Left side view of the lid base. A perspective view of the dust case handle viewed diagonally from the upper left to the front. A perspective view of the dust case handle viewed diagonally from above and behind. Top view of the dust case handle as seen from above. A perspective view of the dust case piece viewed diagonally from the front and upper left. A perspective view of the dust case piece viewed diagonally to the right and from above. A perspective view of the dust case cover diagonally from the upper left front. A perspective view of the dust case cover diagonally from the upper left rear. Sectional view around the lid where the dust collector is installed in the vacuum cleaner body. Cross-sectional view around the lid of the dust collector when the dust collector is removed from the vacuum cleaner body. A perspective view of a state in which the lid of the dust collector is opened and the dust filter is taken out. A perspective view of the state where the dust filter is being cleaned. A perspective view of the dust collector viewed diagonally from the rear right. Left side view with the lid of the dust collector open. A perspective view of a dust collector with the bottom lid opened for dust disposal as viewed from diagonally lower left. Left vertical cross-sectional view of a dust collector with the bottom lid opened for dust disposal. Cross-sectional view of the state where the inner cylinder is removed from the dust collector and the umbrella part is slid. Cross-sectional view of the state where the inner cylinder is removed from the dust collector and the umbrella part is not sliding. FIG. 14A is an enlarged perspective view of a part of the bottom lid 31 with respect to the outer cylinder 30 as viewed from diagonally left front upper and around the rotation shaft 31j. FIG. 7C is an enlarged cross-sectional view of part III. FIG. 15D is an enlarged sectional view taken along line IV.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
FIG. 1 shows an external perspective view of the vacuum cleaner S according to the embodiment of the present invention. The vertical direction, the horizontal direction, and the front-rear direction are the directions shown in FIG. The left-right direction is viewed from the vacuum cleaner main body 1 side.

FIG. 2 shows a side view of the state in which the extension pipe 6 is removed from the vacuum cleaner S of the embodiment.

The vacuum cleaner S shown in FIG. 1 includes a mouthpiece 7, a vacuum cleaner main body 1, and a cyclone type dust collector 10 detachably provided on the vacuum cleaner main body 1.
The mouthpiece 7 sucks in dust and the like. The vacuum cleaner main body 1 has a built-in electric blower 14 that generates a suction force from the mouthpiece 7. The dust collector 10 collects dust and the like sucked by the mouthpiece 7.

The vacuum cleaner body 1 is connected to the hand handle 3 via a suction hose 2. The hand handle 3 is connected to the mouthpiece 7 via an extension pipe 6.

The vacuum cleaner main body 1 is provided with a pair of wheels 15a on the left and right and one caster 15b (see FIG. 2) on the front side so that the vacuum cleaner body 1 can move freely.
FIG. 3 shows a top view of the vacuum cleaner S with the extension pipe 6 removed.
A main body handle 19 that is gripped when the user carries the electric vacuum cleaner S is attached to the vacuum cleaner main body 1.

The hand handle 3 shown in FIG. 1 includes an operation unit 4 that controls drive of an electric blower 14 built in the vacuum cleaner main body 1 and an electric rotary brush (not shown) provided in the mouthpiece 7. .. An operation button 5 is arranged on the operation unit 4. The operation button 5 includes a (strong / medium / weak) button that is pressed when the operation is started, a (off) button that is pressed when the operation is stopped, and the like.

As shown in FIG. 2, a take-up button 23o of the cord reel 23 for winding the power cord 23a (see FIG. 5) is provided behind the main body handle 19 of the vacuum cleaner main body 1.

<Vacuum cleaner body 1>
FIG. 4 shows an external perspective view of the vacuum cleaner body 1 with the dust collector 10 and the suction hose 2 removed.
The vacuum cleaner main body 1 has an outer shell formed by combining an upper case 1a, a lower case 1c, and a hose opening member 11. The upper case 1a, the lower case 1c, and the hose mouth member 11 are made of a lightweight resin material, for example, lightweight PP (polypropylene).

Here, the specific gravity of PP is about 0.95 to 0.97, and ABS, which is often used in the outer shell of a general vacuum cleaner, has a specific gravity of about 1.1, and PP is lighter than ABS. Is.

The upper case 1a is textured to improve the design and design.
A hose attachment port (main body intake port) for sucking air containing dust is opened at the front portion of the hose port member 11.

As shown in FIG. 3, a cover 1b1 of a cord plug 23b of the power cord 23a (see FIG. 5) is formed at the rear portion of the lower case 1c.

FIG. 5 shows a perspective view of the vacuum cleaner body 1 with the upper case 1a and the lower case 1c removed.
FIG. 6 shows an II cross section of FIG. 3 when the vacuum cleaner main body 1 is viewed from the side.

The hose attachment port 11 is connected to an introduction pipe 20 (see FIG. 5) through which air including dust in the vacuum cleaner main body 1 passes.

Inside the vacuum cleaner body 1, an electric blower 14 (see FIG. 6) that generates suction force from the mouthpiece 7 (see FIG. 1) is housed. Further, a pleated high dust collecting filter 29 (see FIG. 6) for purifying the exhaust gas is arranged in the air flow path after removing the dust sucked by the electric blower 14.

As shown in FIG. 5, a hose attachment port 11 is provided on the front side, which is the front surface of the vacuum cleaner main body 1.
On the right side of the vacuum cleaner main body 1, there is an introduction pipe outlet 12 that is fluidly connected so that gas flows through the inside via the introduction pipe 20. The introduction pipe outlet 12 is fluidly connected to the dust collector 10 attached to and detached from the vacuum cleaner main body 1 so that gas can flow. The dust collector 10 separates the dust from the air including the dust sucked by the mouthpiece 7 (see FIG. 1) and stores the dust.

On the other hand, the upper part of the front surface of the vacuum cleaner main body 1 is provided with a duct inlet portion 13 to the duct 21 (see FIG. 5) communicating with the electric blower 14. The duct inlet portion 13 is a port into which air is sucked after the dust is removed by the dust collector 10. As shown in FIG. 4, a protective filter 17a is provided in front of the duct inlet portion 13. The protective filter 17a is provided upstream of the filter cover 17.

<Installation of dust collector 10>
As shown by arrows α1 and α2 in FIG. 2, the dust collector 10 is detachably attached with the upper portion inclined to the rear side. When the dust collects in the outer cylinder 30, the dust collector 10 is removed from the vacuum cleaner main body 1 by moving the dust collector 10 in the direction of the arrow α2 shown in FIG. On the other hand, after the dust is discharged (discarded) in the outer cylinder 30, the dust collector 10 is moved in the direction of the arrow α1 to be attached to the vacuum cleaner main body 1.

The vacuum cleaner main body 1 is provided with a structure for positioning and a structure for fixing the dust collector 10 so that airtightness can be easily maintained when the dust collector 10 is attached to the vacuum cleaner main body 1.

The concave handle storage portion 22 in the vacuum cleaner main body 1 shown in FIG. 4 houses a handle 35 (see FIG. 15A) provided behind the dust collector 10. The handle 35 and the handle storage unit 22 have a structure for positioning the dust collector 10 when the dust collector 10 is set in the vacuum cleaner main body 1.

Further, at the lower part of the attachment portion of the dust collector 10 in the vacuum cleaner main body 1, as a structure for fixing the dust collector 10, the bottom lid 31 (see FIG. 2) of the dust collector 10 is fitted. A portion 1a6 (see FIG. 4) is provided.

As shown in FIG. 6, when the dust collector 10 is attached to the vacuum cleaner main body 1, the dust collector 10 is fluidly connected to the duct 21. The duct 21 is adjacent to the introduction pipe 20 adjacent to the hose attachment port 11 and the protective filter 17a provided on the duct 21 and fixed by a claw (not shown).

In the electric blower 14 shown in FIG. 6, a duct 21 through which air flows through the protective filter 17a after removing dust is fluidly connected to the upstream side, while a high dust collection filter 29 is fluidly connected to the downstream side. Has been done.

In the vacuum cleaner S, the dust collector 10 is located on the upstream side of the electric blower 14. That is, the dust collector 10, the duct 21, and the electric blower 14 are configured in this order from the upstream side of the suction force of the mouthpiece 7 (see FIG. 1). Specifically, the dust collector 10 to the electric blower 14 communicate with the duct 21 from the upper part of the dust collector 10 and from the duct 21 to the upper part of the electric blower 14.

<Cord reel 23 and introduction pipe outlet 12>
The motor case 16 for accommodating the electric blower 14 shown in FIG. 6 is arranged at the rear right side of the vacuum cleaner main body 1.
A cord reel 23 (see FIG. 5) for accommodating a power cord 23a (see FIG. 5) for supplying electric power from an outlet or the like to the electric blower 14 or the like is arranged behind the left side of the vacuum cleaner main body 1.
The introduction pipe outlet 12 of the outlet of the introduction pipe 20 is provided on the side opposite to the side where the cord reel 23 is located in the left-right direction of the vacuum cleaner main body 1.

As shown in FIG. 5, the introduction pipe 20 and the introduction pipe outlet 12 are arranged closer to the right side in consideration of the arrangement of the motor case 16 and the cord reel 23 because the cord reel 23 is large.

The introduction pipe 20 is arranged closer to the right side of the vacuum cleaner body 1 instead of the center in the tangential direction of the inner peripheral surface of the outer cylinder 30 of the dust collector 10 (the right side of the vacuum cleaner body 1). This is because it is easy to generate a swirling flow by inflowing the sucked air from (located in). In the present embodiment, the introduction pipe 20 is arranged on the right side to form a counterclockwise swirling flow.

<Duct 21>
As shown in FIG. 6, a duct 21 is provided above the introduction pipe 20 in which air from which dust has been removed through the dust collector 10 is sucked from the duct port 21a. Around the lower opening 21o of the duct 21, a plurality of engaging holes are provided in which a plurality of claw portions 21s1 (see FIG. 5) of the duct base 21s are engaged with each other.

The duct 21 is fixed to the duct base 21s by engaging the plurality of claws 21s1 of the duct base 21s shown in FIG. 5 with the engaging holes of the duct 21. As shown in FIG. 4, the duct opening 21a has a lattice shape.

Further, in the upper case 1a, an engaging hole 1a7 (see FIG. 4) with which the arm hook portion 26d (see FIGS. 10A and 10B) of the handle arm 26c in the lid portion 24 of the dust collector 10 is engaged is a duct opening 21a. It is formed on both sides of.

The duct base 21s shown in FIGS. 5 and 6 is made of a transparent material so that the inside can be visually recognized. As a result, 21 g of anti-vibration rubber (see FIG. 6) of the electric blower 14 arranged inside the duct base 21s can be visually recognized. It can be visually confirmed at a glance whether the anti-vibration rubber 21 g is normally set at the time of assembly.

<Air flow path containing dust sucked into the vacuum cleaner body 1>
When the dust collector 10 is attached to the vacuum cleaner main body 1, it has a series of flow paths from the hose attachment port 11 to the high dust collection filter 29, as shown in FIG. 6 of the vertical sectional view.

In the vacuum cleaner body 1 of the vacuum cleaner S, the air sucked into the vacuum cleaner body 1 from the mouthpiece 7 (see FIG. 1) flows as shown by arrows β1 to β8 shown in FIG.

As shown in FIG. 6, air including dust and the like sucked in by the mouthpiece 7 (see FIG. 1) flows into the introduction pipe 20 in the vacuum cleaner main body 1 from the hose attachment port 11 (arrow β1 in FIG. 6). .. The inflowing air passes through the introduction pipe 20, passes through the introduction pipe outlet 12, and reaches the dust collector 10 (arrow β2 in FIG. 6). The air containing dust and the like that has entered the dust collector 10 becomes an air flow that goes around the inner cylinder 40 (arrow β3 in FIG. 6). The centrifugal force generated by this airflow separates the air from the dust, the air is sucked into the inner cylinder 40, and a part of the airflow (arrow β4 in FIG. 6) flows to the lower part of the dust collector 10. Due to this air flow (arrow β4 in FIG. 6), the dust falls along the inner surface of the outer cylinder 30 and collects in the lower part of the dust collector 10.

The airflow to the lower part of the dust collector 10 (arrow β4 in FIG. 6) rises along the outer peripheral surface of the cylindrical umbrella portion 44 (arrow β5 in FIG. 6). Further, the airflow from which dust has been removed rises through the mesh filter 44f (see FIG. 15C) of the umbrella portion 44 described later (arrow β51 in FIG. 6) and is sucked into the inner cylinder 40.
Air containing fine dust that could not be centrifuged flows into the inner cylinder 40, and the fine dust is removed by the dust collecting filter 32 provided in the dust collector 10. Then, the air from which the dust has been removed passes through the inside of the duct 21 and is sucked into the electric blower 14 (arrow β6 in FIG. 6). Then, the air sucked into the electric blower 14 passes through the high dust filter 29 and the remaining foreign matter and the like are removed (arrow β7 in FIG. 6), and the air is removed from the discharge port 34 at the rear lower part of the vacuum cleaner body 1 to the outside. It is discharged (arrow β8 in FIG. 6).

<Main body handle 19>
As described above, the main body handle 19 is a member that is gripped by the user when carrying the vacuum cleaner S.

As shown in FIGS. 1 and 4, a main body handle 19 is attached between the lower case 1c and the upper case 1a.

<Configuration of dust collector 10>
Next, the dust collector 10 will be described.
FIG. 7A shows a front view of the dust collector 10, and FIG. 7B shows a top view of the dust collector 10. FIG. 7C shows a cross section of FIG. 7B II-II.

The dust collector 10 has a function of separating dust from air including dust sucked by the mouthpiece 7 and collecting the dust.

As shown in FIG. 7C, the dust collector 10 is formed of an outer cylinder 30, an inner cylinder 40, a filter case 33 for accommodating a dust collecting filter 32, a lid portion 24, and a bottom lid 31. As shown in FIG. 4, the shaft OO is the central shaft of the dust collector 10 having a substantially cylindrical shape.
In the vacuum cleaner main body 1, since the upper case 1a is made of lightweight PP, the exterior of the bottom lid 31 is made of ABS and the surface is made of a glossy surface in order to improve the design. The bottom lid 31 may be textured or, for example, painted in silver in order to improve the design.
The filter case 33 is made of a material that allows the internal dust collecting filter 32 to be visually recognized, for example, a translucent resin.

The wavy filter portion 32f (see FIG. 7C) of the dust collecting filter 32 through which dust is filtered is provided sideways. Therefore, the laterally wavy filter portion 32f can be easily visually recognized from the outside of the filter case 33. Therefore, the visibility of the dust collecting filter 32 is improved.
The filter case 33 is arranged on the upper part of the outer cylinder 30, and the bottom lid 31 is arranged on the lower part. The inner cylinder 40 is provided in the outer cylinder 30 concentrically with the outer cylinder 30.

The dust collector 10 has a space between the outer cylinder 30 and the inner cylinder 40 for separating and collecting dust by centrifugal force from the air including the dust sucked by the mouthpiece 7. That is, in the space formed by the outer cylinder 30 and the inner cylinder 40, the dust separating portion 10A is provided in the upper portion and the dust accommodating portion 10B is provided in the lower portion.

The dust separation unit 10A is a space for separating dust from air containing dust. The dust accommodating portion 10B is a space for collecting dust.

<Outer cylinder 30>
As shown in FIG. 7C, the outer cylinder 30 has a substantially cylindrical shape having an upper opening 30i and a lower opening 30j that are open at the top and bottom.
An inflow pipe into which air (gas) containing dust flows in from the introduction pipe outlet 12 is provided on the side surface of the outer cylinder 30. The outer inner surface of the inflow pipe is formed so as to be connected to the inner peripheral surface 30 m of the outer cylinder 30 in a substantially tangential direction. The inflow pipe is a connection portion to the introduction pipe outlet 12, and an opening through which air containing dust flows in is formed from the introduction pipe outlet 12.

The inflow pipe is formed by a drawing wall along the arc shape of the outer cylinder 30. Since the opening is shaped along the tangent line of the inner peripheral surface 30 m of the outer cylinder 30, air containing dust and the like becomes a swirling air flow along the inner peripheral surface 30 m of the outer cylinder 30.

With this configuration, the air flowing into the outer cylinder 30 of the dust collector 10 from the introduction pipe outlet 12 becomes an air flow around the central axis O (see FIG. 7A) (central axis of the dust collector 10) of the outer cylinder 30. The outer cylinder 30 is rotated counterclockwise around the central axis O. Due to the swirling airflow, the dust contained in the air is separated by the centrifugal force in the dust separating portion 10A and stored in the dust accommodating portion 10B.

<Cover 24>
The lid portion 24 shown in FIG. 7C has a function of the user removing the dust collector 10 from the vacuum cleaner main body 1, a function of the user holding the dust collector 10, and a function of forming a lid of the dust collector 10. Also serves as.

FIG. 8A shows an exploded perspective view of the lid portion 24 viewed from diagonally upper left and front, and FIG. 8B shows an exploded perspective view of the lid portion 24 viewed from the right side.
Further, FIG. 8C shows an exploded perspective view of the lid portion 24 as viewed diagonally from the upper right rear.
The lid portion 24 includes a lid base 25, a dust case handle 26, a dust case piece 27, a dust case cover 28, and a handle push-up spring 29 from the bottom. The handle push-up spring 29 is a compression spring.

FIG. 9A shows a perspective view of the lid base 25 viewed from diagonally upward and rearward to the left, and FIG. 9B shows a perspective view of the lid base 25 viewed from diagonally upward and forward to the left. Further, FIG. 9C shows a left side view of the lid base 25.
The lid base 25 has a front circular rear shape when viewed from above. That is, the lid base 25 has a semi-cylindrical front portion 25A and a flat substantially box-shaped rear portion 25B.
The lid base 25 has a duct discharge port 25a and a spring receiver 25c.

The duct discharge port 25a is a rectangular opening. The duct discharge port 25a communicates with the duct inlet portion 13 to the duct 21 (see FIG. 5). The air after the dust is removed by the dust collector 10 from the duct discharge port 25a of the lid base 25 is sent to the duct inlet portion 13.
The spring receiver 25c has a cylindrical shape. As shown in FIG. 8C, the handle push-up spring 29 is fitted into the spring receiver 25c.

FIG. 10A shows a perspective view of the dust case handle 26 viewed from diagonally upper left and front, and FIG. 10B shows a perspective view of the dust case handle 26 viewed from diagonally upper left and rear. FIG. 10C shows a top view of the dust case handle 26 as viewed from above.
The dust case handle 26 has a front flat cylindrical cylindrical portion 26a, a pair of support shafts 26b (see FIG. 10C), a pair of handle arms 26c, and a pair of arm hook portions 26d.

The cylindrical portion 26a is formed with a concave shape of a grip portion 26e into which a user inserts a hand when removing the dust collector 10.
The pair of support shafts 26b are rotation shafts of the dust case handle 26. The pair of support shafts 26b have a cylindrical shape, and as shown in FIG. 10C, are formed so as to extend outward from the slightly rear portion of the cylindrical portion 26a to the left and right.
The arm hook portion 26d is formed in a convex shape upward from the tip end portion of the handle arm 26c.

The pair of arm hooks 26d of the dust case handle 26 are locked to the pair of engaging holes 1a7 of the upper case 1a shown in FIG. 4, respectively.
FIG. 11A shows a perspective view of the dust case piece 27 as viewed diagonally from the front and upper left, and FIG. 11B shows a perspective view of the dust case piece 27 as viewed diagonally from the rear and upper right.
The dust case piece 27 is a design part made of ABS.
The dust case piece 27 has a roof-shaped rear cover portion 27a, a pair of shaft arms 27b, a pair of shaft hole protrusions 27d, and a claw arm 27f.

The pair of shaft arms 27b have an arm shape extending forward from the left and right ends of the roof-shaped rear cover portion 27a.
A shaft hole protrusion 27d is projected downward from the tip of the shaft arm 27b.
A shaft hole 27c is formed in each of the pair of shaft hole protrusions 27d.
Each of the shaft holes 27c is formed as a through hole penetrating in the left-right direction at the tip of the shaft arm 27b. The shaft hole 27c has a diameter slightly larger than the diameter of the support shaft 26b so that the support shaft 26b of the dust case handle 26 can be inserted.

A claw arm 27f is formed from the left rear portion of the rear cover portion 27a downward. At the tip of the claw arm 27f, a claw 27e for assembling a convex portion is formed inside.
FIG. 12A shows a perspective view of the dust case cover 28 as viewed diagonally from the upper left front, and FIG. 12B shows a perspective view of the dust case cover 28 as viewed diagonally from the upper left rear.
The dust case cover 28 is a case-shaped part having a semi-cylindrical portion 28a and an annular disc portion 28b. The dust case cover 28 is made of ABS. For example, the dust case cover 28 has a silver exterior.

The semi-cylindrical portion 28a has an opening 28a1 at the rear portion.
The annular disc portion 28b has a circular opening 28b1 in the central portion, and has a shape in which the central side is raised upward.

<Assembly of lid 24>
Assembling the lid 24 is performed as follows by aligning the front, rear, left and right directions of the lid base 25, the dust case handle 26, the dust case piece 27, and the dust case cover 28, as shown in FIGS. 8A to 8C. Be told.

The left and right support shafts 26b of the dust case handle 26 are deformed from the inside into the left and right paired shaft holes 27c of the dust case piece 27 shown in FIGS. 11A and 11B, and at least one of the dust case handle 26 and the dust case piece 27 is deformed. Let it through. This is called a handle piece assembly.

The handle push-up spring 29 is fitted to the spring receiver 25c of the lid base 25 from above.
The above-mentioned handle piece assembly is placed on the lid base 25 on which the handle push-up spring 29 is installed. At this time, the assembly claw 27e of the dust case piece 27 is engaged with the lid base 25. The dust case cover 28 is placed on this and fixed with screws n (see FIG. 8A) from the lower side. As a result, the handle push-up spring 29 presses the top plate 26a1 of the cylindrical portion 26a (see FIG. 10A) on the handle arm 26c side upward against the support shaft 26b in the handle arm 26c. Therefore, a force that pushes the pair of arm hooks 26d of the dust case handle 26 upward around the support shaft 26b is applied.

<Attachment of dust collector 10 to vacuum cleaner body 1>
To attach the dust collector 10 to the vacuum cleaner main body 1, the procedure is as follows.
The dust collector 10 shown in FIG. 4 is pressed against the vacuum cleaner main body 1 as shown by the arrow α1 in FIG. Then, the arm hook portion 26d of the dust case handle 26 rotates from above to downward against the elastic force of the handle push-up spring 29 and is locked in the pair of engaging holes 1a7 (see FIG. 4) of the upper case 1a. To.

<Removal of the upper case 1a of the arm hook portion 26d of the lid portion 24 from the locking to the pair of engaging holes 1a7>
FIG. 13A shows a schematic cross-sectional view around the lid 24 in which the dust collector 10 is installed in the vacuum cleaner main body 1.
When the dust collector 10 is set in the vacuum cleaner main body 1, the arm hook portion 26d of the dust collector 10 is locked in the engagement hole 1a7 (see FIG. 4) of the upper case 1a.

FIG. 13B shows a schematic cross-sectional view around the lid 24 of the dust collector 10 when the dust collector 10 is removed from the vacuum cleaner main body 1.
A space 26s (coarse dots in FIG. 6) for inserting a hand is formed below the grip portion.
When removing the dust collector 10 from the vacuum cleaner main body 1, the user inserts his / her hand into the grip portion 26e of the dust case handle 26 in the front-down direction (arrow α21 in FIG. 13A) and pulls it upward (FIG. 13B). Arrow α22). The grip portion 26e has a structure in which a hand is put in the front-down direction from the rear and the grip portion 26e is gripped from below by the hand.

As a result, the dust case handle 26 rotates clockwise around the support shaft 26b (arrow α23 in FIG. 13B). As shown in FIG. 13B, the arm hook portion 26d of the dust case handle 26 is disengaged from the pair of engaging holes 1a7 (see FIG. 4) of the upper case 1a, respectively.
In this way, as shown in FIG. 4, the dust collector 10 can be removed from the vacuum cleaner main body 1.

<Dust collection filter 32>
FIG. 14A shows a perspective view of a state in which the lid 24 of the dust collector 10 is opened and the dust collection filter 32 is taken out, and FIG. 14B shows a perspective view of a state in which the dust collection filter 32 is being cleaned.
The dust collecting filter 32 has a filter case 32c and a wavy filter portion 32f.
The wavy filter portion 32f is attached to the filter case 32c.

The filter case 32c is formed with a pair of case legs 32c2 protruding downward from the wavy filter portion 32f. In FIG. 14A, one case foot 32c2 is hidden.
Cleaning of the dust collecting filter 32 of the dust collecting device 10 is performed as follows.
As shown in FIG. 14A, the user pushes the filter cleaning lever 10r of the dust collector 10 (arrow β11 in FIG. 14A) to grip the grip portion 26e of the dust case handle 26 and open the lid portion 24.

Then, as shown in FIG. 14B, the user holds the filter case 32c of the dust collecting filter 32 and taps the case foot 32c2 protruding downward against the floor surface Y or the like to cause dust adhering to the dust collecting filter 32. And so on. Therefore, dust removal of the dust collecting filter 32 can be easily performed.
Dust is removed from the dust collecting filter 32 with a special brush, and there is a risk that cleaning will take time.
On the other hand, by using the above-mentioned configuration of the dust collecting filter 32, the cleaning performance is improved.

<Detailed configuration of dust collector 10>
As shown in FIG. 7C, an umbrella portion 44 having an opening 44a below is provided below the inner cylinder 40.

FIG. 15A shows a perspective view of the dust collector 10 as viewed diagonally from the rear right. FIG. 15B shows a left side view of the dust collector 10 with the lid 24 open.
FIG. 15C shows a perspective view of the dust collector 10 with the bottom lid 31 opened for dust disposal as viewed from diagonally lower left. FIG. 15D shows a left vertical cross-sectional view of the dust collector 10 in which the bottom lid 31 is opened for dust disposal.

As shown in FIG. 15A, the bottom lid 31 is provided with two leg portions 31e protruding downward from the rounded lower surface 31s. As shown in FIG. 15B, the two legs 31e provide support so that the center of gravity of the dust collector 10 moves backward when the lid 24 is opened by the dust collector 10, so that the two legs 31e do not fall backward. ing.
Therefore, when the user opens the lid 24 of the dust collector 10 (arrow β21 in FIG. 15B) in order to clean the dust filter 32, the two legs 31e of the bottom lid 31 serve as support on the rear side. , It is possible to prevent the dust collector 10 from tipping backward (arrow β22 in FIG. 15B).
As shown in FIG. 6, the intake portion (first filter portion) 40a of the upper inner cylinder 40 is formed by a grid-like frame (support bone). The intake portion (first filter portion) 40a is a substantially tubular portion. In the present embodiment, the frame body (support bone) in the vertical direction is used, but a grid shape having the frame body (support bone) in the vertical and horizontal directions may be used. A mesh member 40b is hung over the outer peripheral surface of the intake portion 40a. The mesh member 40b is held on the upstream side (outside in this embodiment) of the frame body (support bone) by coating or insert molding. By providing the first filter 40b in the intake portion 40a, the upper inner cylinder 40 has a filter function and suppresses the inflow of fine dust into the inner cylinder 40. The upper inner cylinder 40 is provided with an opening 40c in the upward direction.

In the present embodiment, polyester is used for the first filter 40b, but a metal (for example, stainless steel) may be used, and a small-diameter through hole (φ2 mm that can be molded with a mold) is used instead of the frame (support bone). An intake portion 40a provided with a plurality of holes) may be used. The through hole is effective against strength and tearing, unlike the case where the mesh member 40b is hung on the frame body (support bone), and has an advantage that secondary molding is unnecessary. However, if the diameter (opening area) of the through hole is larger than the opening area of the first filter 40b, it is disadvantageous against the inflow of fine dust into the inner cylinder 40.
Further, by providing the first filter 40b on the upstream side of the frame body (support bone), it is possible to prevent dust from entering the steps and gaps with the frame body (support bone), so that maintenance and maintenance are easy. It is possible to prevent the filter from peeling off.

As shown in FIGS. 15C and 15D, the umbrella portion 44 has a cylindrical shape having an opening 44a at the bottom. The umbrella portion 44 has a peripheral plate 44b, a flat plate-shaped top plate 44c extending inside the upper end of the peripheral plate 44b, and a flat plate-shaped rib 44g continuing outside the upper end of the peripheral plate 44b.
A plurality of openings 44c1 (see FIG. 15C) are formed in the top plate 44c of the umbrella portion 44. A second filter 44f is installed in the opening 44c1.
Further, at this time, the second filter 44f is provided on the upstream side (lower side) of the top plate 44c of the umbrella portion 44, and is configured so that there is no step with the top plate 44c on the upstream side.
By providing the second filter 44f on the upstream side (lower side) of the top plate 44c, it is possible to prevent dust from entering the steps and gaps with the top plate 44c, so that maintenance and maintenance can be facilitated and the filter can be peeled off. Can be prevented.

The air containing dust and the like that has flowed in the tangential direction of the outer cylinder 30 in the dust collector 10 becomes a swirling flow as shown by the arrow β3 in FIG. 6, and is formed in the outer cylinder 30 along the inner surface of the outer cylinder 30. Turn around 40 times. As a result, centrifugal force acts on the dust, and the dust is separated from the air. Since dust and the like are heavier than air, they fall along the inner peripheral surface of the outer cylinder 30 as shown by arrow β4. That is, the dust is separated from the air at the dust separation unit 10A, which is the upper part of the dust collection unit 10. Most of the air from which the dust has been separated passes through the second filter 44f installed so as to cover the plurality of intake ports 40a provided in the upper inner cylinder 40 and flows into the inside of the inner cylinder 40 (arrow β6). At this time, air and dust can be further separated by the second filter 44f.

On the other hand, the dust separated by the centrifugal force passes through the inlet of the dust collecting portion 10B between the outer cylinder 30 and the umbrella portion 44 due to gravity and a part of the air flow, and is conveyed into the dust collecting portion 10B. ..

Then, since the inner cylinder 40 and the inside of the umbrella portion 44 are fluidly communicated with each other by the second filter 44f, light dust such as cotton dust and hair goes from the inside of the umbrella portion 44 toward the inner cylinder 40. It is carried by the flow (arrow β51), and the downstream side (inside of the inner cylinder 40) of the second filter 44f has a negative pressure (pressure lower than the atmospheric pressure), so that it is moved to the upstream side of the second filter 44f. It is compressed and deposited. On the other hand, heavy dust such as pebbles stays near the bottom of the dust collecting portion 10B. Then, as the vacuum cleaner 1 continues to be used, even more light dust is compressed, and the dust accumulates in a donut shape.

As a result, the amount of dust that can be accumulated in the dust collecting unit 10B can be increased.
Here, the fineness of the mesh of the second filter 44f may be finer than that of the first filter. By making the size finer, the amount of wind flowing from the first filter 40b into the inner cylinder 40 can be increased, and the amount of wind flowing from the second filter side can be reduced. As a result, the amount of dust accumulated in the umbrella portion can be reduced, and the maintenance frequency of the dust collecting portion 10 can be reduced.

Further, it is possible to prevent the light dust once accumulated in the dust collecting unit 10B from returning to the dust separating unit 10A.

Then, the flow flowing into the inner cylinder 40 from the intake port 42 (arrow γ3) and the flow from the inside of the umbrella portion 44 toward the inner cylinder 41 (arrow γ5) merge and pass through the dust collecting filter 32. It flows into the duct inlet portion 13 (see FIG. 3) of the vacuum cleaner main body 1.

As shown in FIG. 15D, a cylindrical sliding convex portion 46 having an opening 46a below is provided in the central portion of the umbrella portion 44 continuously with the top plate 44c. A compression spring 48 is provided between the sliding convex portion 46 and the base plate 47 so as to urge the umbrella portion 44 downward with respect to the base plate 47.

As shown in FIG. 7C, when the bottom lid 31 (see FIG. 2) is closed, the compression spring 48 is compressed, and the sliding convex portion 46 of the umbrella portion 44 comes into contact with the bottom plate 31t of the bottom lid 31. It is in a state. As a result, dust and the like that pass through the inside of the sliding convex portion 46 and directly reach the dust collecting filter 32 are suppressed.
In some cases, a cap component having a narrow central hole is provided below the sliding convex portion 46.

On the other hand, the sliding convex portion 46 of the present embodiment has a cylindrical shape with an opening 46a at the bottom. The number of sliding convex portions 46 of the embodiment is reduced by eliminating the cap parts.
Further, by making the lower surface of the sliding convex portion 46 an opening 46a, dust and the like that have entered the sliding convex portion 46 can be easily removed. Therefore, the cleaning performance inside the sliding convex portion 46 is improved. The area of the opening 46a is substantially the same as any cross-sectional area of the sliding convex portion 46, and dust and the like that have entered the sliding convex portion 46 can be discharged from the sliding convex portion 46, and the umbrella portion 44 can be discharged. Improved maintainability. Further, when the inner cylinder Kumi 49 is washed with water, water and dust that have entered the sliding convex portion 46 can be discharged from the opening 46a (discharged to the arrow β40 in FIG. 16A), and the maintainability is improved.

Here, since the mesh filter 44f is provided on the umbrella portion 44, the rising airflow increases (arrow β51 in FIG. 6). Therefore, the improvement of the cleaning performance inside the sliding convex portion 46 is very effective.

Further, the inner cylinder 40, the base plate 47, the compression spring 48, and the umbrella portion 44 are collectively referred to as an inner cylinder Kumi 49 (see FIGS. 16A and 16B). FIG. 16A shows a cross-sectional view of the inner cylinder Kumi 49 with the umbrella portion 44 sliding downward, and FIG. 16B shows a cross-sectional view of the inner cylinder Kumi 49 with the umbrella portion 44 not sliding downward. Is shown.

The inner cylinder Kumi 49 can be removed from the dust collector 10 by turning it clockwise around the central axis O. On the other hand, if the inner cylinder Kumi 49 is turned counterclockwise around the central axis O, it can be attached to the dust collector 10.

By removing the inner cylinder Kumi 49 from the dust collector 10, the entire inner cylinder Kumi 49 can be washed with water. Further, since there are an inner cylinder upper surface 40a, an inner cylinder lower surface 40b, and an opening 46a (drained to arrows β40, β41, β42 in FIG. 16A), which are places where water is discharged, water does not easily collect in the inner cylinder Kumi 49 and the water dries. It is possible to reduce the time until.

FIG. 17 is a partially cutaway enlarged perspective view of the bottom lid 31 shown in FIG. 14A with respect to the outer cylinder 30 and the circumference of the rotation shaft 31j as viewed diagonally from the upper left front.
FIG. 18A shows an enlarged cross-sectional view of part III of FIG. 7C, and FIG. 18B shows an enlarged cross-sectional view of part IV of FIG. 15D.

As shown in FIG. 17, the bottom lid 31 is provided with a rotating shaft 31j having an elliptical cross section for opening and closing the outer cylinder 30. When the bottom lid 31 is closed, the rotation shaft 31j has a long axis side 31j1 in the horizontal direction as shown in FIG. 18A, and when the bottom lid 31 is opened, the rotation shaft 31j is long as shown in FIG. 18B. The shaft side 31j1 is in the vertical direction.
On the other hand, the outer cylinder 30 is provided with support portions 30s having bearing holes 30u at both ends for rotating the rotation shaft 31j of the bottom lid 31.

A plurality of fixed ribs 30r are provided inside the support portion 30s. The fixed rib 30r has a contact portion 30r1 that comes into contact with the long axis side 31j1 of the rotating shaft 31j when the bottom lid 31 of the dust collector 10 is opened. The fixing rib 30r is formed when the bottom lid 31 of the dust collector 10 that fixes the lid 31 in an open state by contacting the contact portion 30r1 with the long axis side 31j1 of the rotation shaft 31j of the bottom lid 31. As shown in FIG. 18A, the contact portion 30r1 of the fixed rib 30r of the outer cylinder 30 faces the short shaft side 31j2 of the rotation shaft 31j of the bottom lid 31 and is not in contact with the rotation shaft 31j.

On the other hand, as shown in FIG. 18B, when the bottom lid 31 of the dust collector 10 is opened, the contact portion 30r1 of the fixed rib 30r of the outer cylinder 30 is the long axis side 31j1 of the rotation shaft 31j of the bottom lid 31. And fix the bottom lid 31 in an open state. With this configuration, it is possible to reduce the number of springs that hold the bottom lid open. Therefore, the number of parts of the dust collector 10 can be reduced, and the weight can be reduced.

To dispose of the dust accumulated inside the dust collector 10, the user pushes the bottom lid opening lever 30v shown in FIG. 15A (arrow β3 in FIG. 15A). Then, the lock of the outer cylinder 30 with respect to the bottom lid 31 is released, the umbrella portion 44 of the dust collector 10 is pressed by the compression spring 48 (see FIG. 7C), and as shown in FIG. 15D, the umbrella portion 44 of the outer cylinder 30 Jump down. With that momentum, the dust stored inside the bottom lid 31 (see FIG. 7C) below the outer cylinder 30 is discharged downward. At this time, as shown in FIG. 18B, the contact portion 30r1 of the fixing rib 30r of the outer cylinder 30 contacts the long shaft side 31j1 of the rotation shaft 31j of the bottom lid 31 and fixes the bottom lid 31 in an open state. .. Therefore, the dust and the like accumulated in the dust collector 10 can be smoothly discarded.

According to the above configuration, when the bottom lid 31 of the dust collector 10 is opened, the umbrella portion 44 of the dust collector 10 is pressed by the compression spring 48 (see FIG. 7C), and as shown in FIG. 15D, the umbrella portion 44 Pops out below the outer cylinder 30. With that momentum, dust and the like in the umbrella portion 44 is pushed out by the top plate 44c and the mesh filter 44f and discharged downward. In addition, dust and the like stored outside the umbrella portion 44 are also pushed out by the protruding portion 44 g and discharged downward. Therefore, the dust and the like accumulated in the dust collector 10 can be smoothly discarded.

Further, by making the lower surface of the sliding convex portion 46 an opening 46a substantially equal to the cross section of the sliding convex portion 46, dust and the like that have entered the sliding convex portion 46 are also discharged at the same time. As described above, the dust and the like stored inside the bottom lid 31 (see FIG. 7C) below the outer cylinder 30 can be easily discharged downward.

Further, the above-mentioned inner cylinder Kumi 49 can be attached to and detached from the dust collector 10. As a result, the entire inner cylinder Kumi 49 (see FIGS. 16A and 16B) can be washed with water.

Further, the umbrella portion 44 is slidable with respect to the base plate 47, and the lower surface of the sliding convex portion 46 is an opening 46a, so that when the inner cylinder Kumi 49 is washed with water, the opening 46a (FIG. 16A). Water and dust that have entered the sliding convex portion 46 can be discharged from the arrow β40), and the careability is improved.

Further, when closing the bottom lid 31 of the dust collector 10, the bottom lid 31 comes into contact with the sliding convex portion 46 of the umbrella portion 44, and the bottom lid 31 is closed while sliding the umbrella portion 44 with respect to the base plate 47. .. As a result, when the bottom lid 31 is closed, the compression spring 48 is compressed, and the sliding convex portion 46 of the umbrella portion 44 is in contact with the bottom plate 31t of the bottom lid 31. As a result, it is possible to suppress dust that invades through the opening 46a of the sliding convex portion 46 and directly reaches the dust collecting filter 32.

<< Other Embodiments >>
1. 1. Although various configurations have been described in the above-described embodiment, at least a part of each configuration may be adopted. For example, each of the described configurations may be selected and appropriately combined to form a configuration, or a configuration including one of the described configurations may be provided.

2. 2. The configuration described in the above embodiment is an example of the present invention, and various other forms are possible within the scope of the claims.

1 Vacuum cleaner body 1a7 Engagement hole (engaged part)
10 Dust collector 14 Electric blower 26 Dust case handle (release mechanism, handle member)
27c Shaft hole (rotating shaft)
26d Arm hook (engagement)
26e Grip part 26s Space for gripping the grip part 21s Space in front O Central axis of dust collector S Vacuum cleaner α21 From rear to front

Claims

It has a vacuum cleaner main body provided with an electric blower and a dust collector that can be attached to and detached from the vacuum cleaner main body, and the dust collector includes an outer cylinder, an inner cylinder provided in the outer cylinder, and a dust collector. The inner cylinder is provided with a bottom lid for discharging dusty dust, and the inner cylinder has an intake portion having a substantially tubular first filter on the upper portion thereof and an umbrella portion opened on the lid portion side below the intake portion. The intake portion and the umbrella portion communicate with each other via a second filter provided on the upstream side of the umbrella portion, and the umbrella portion opens the bottom lid in the opening direction. A vacuum cleaner and a dust collector thereof, characterized by having a sliding mechanism that projects toward.
The vacuum cleaner and its dust collector according to claim 1, wherein the second filter has a finer mesh than the first filter.
The vacuum cleaner and its dust collector according to claim 1, wherein the umbrella portion has an inverted tapered shape in which the bottom lid side is widened.