JP2023042477A - vacuum cleaner - Google Patents

Abstract

To provide a vacuum cleaner which can suppress winding of dust such as hairs and dust in a dust collection device.SOLUTION: A vacuum cleaner includes a cleaner body having an electric fan and a dust collection part 50 which is attachable to and detachable from the cleaner body. The dust collection part 50 includes an outer cylinder 52 which has a dust collection part inflow port 52b and an opening part 52a provided on one side in an axial direction, a structure 54 arranged inside the outer cylinder 52, and a dust collection space 56 formed between the outer cylinder 52 and the structure 54. The structure 54 has a tapered part 70 which is formed in a manner that an outer shape becomes small toward the other side from the one side in the axial direction.SELECTED DRAWING: Figure 4

Description

The present invention relates to vacuum cleaners.

Conventionally, an electric vacuum cleaner disclosed in Patent Document 1 below has been provided. This electric vacuum cleaner swirls the air sucked from the air inlet provided in the circumferential direction of the dust collection container along the substantially cylindrical inner peripheral surface, and then rotates the air into the dust collection container. An inner cylinder having an exhaust port for exhausting air from the center is provided, and dust contained in the air is collected at the bottom of the dust collection container. In addition, the inner cylinder of the dust collection container provided in this electric vacuum cleaner is constituted by an inner cylinder filter that filters air passing through a part of the outer peripheral wall.

JP 2016-26686 A

However, in the case of the prior art such as that disclosed in Patent Document 1, there is a problem that dust such as hair and dust tends to wind around the inside of the dust collecting container due to the swirling airflow formed around the inner tube filter. If such dust entangles in the dust collection container, there is a concern that secondary problems such as a decrease in dust collection performance due to an increase in exhaust resistance and a decrease in maintainability may occur.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an electric vacuum cleaner capable of suppressing dust such as hair and dust from entangling in a dust collector.

A vacuum cleaner of the present invention provided to solve the above-described problems includes a vacuum cleaner main body having an electric blower, and a dust collector detachable from the cleaner main body, wherein the dust collector includes a An outer cylinder having an inlet and an opening provided on one side in the axial direction, a structure arranged inside the outer cylinder, and a dust collection space formed between the outer cylinder and the structure. and, wherein the structure has a tapered portion formed so that the outer shape becomes smaller from one side toward the other side in the axial direction.

In the electric vacuum cleaner of the present invention, the structure arranged inside the outer cylinder is provided with a tapered portion whose outer shape becomes smaller from one side to the other side in the axial direction. As a result, the airflow that has flowed into the dust collection space through the inlet is swirled in the dust collection space by the influence of the tapered portion and advances toward the other side in the axial direction. It becomes difficult for dust such as hair and dust to get entangled. Therefore, according to the present invention, it is possible to provide an electric vacuum cleaner capable of suppressing entanglement of dust such as hair and dust in the dust collector.

ADVANTAGE OF THE INVENTION According to this invention, the electric vacuum cleaner which can suppress that dust, such as a hair and dust, winds in a dust collector can be provided.

1 is a perspective view showing an electric vacuum cleaner according to one embodiment of the present invention; FIG. FIG. 2 is a perspective view showing a vacuum cleaner main body included in the electric vacuum cleaner of FIG. 1; FIG. 3 is a cross-sectional view of main parts of the cleaner body of FIG. 2 ; FIG. 3 is a cross-sectional view showing a dust collecting part attached to the cleaner body of FIG. 2; FIG. 5 is a perspective view showing the dust collector of FIG. 4; FIG. 5 is an exploded perspective view showing the dust collector of FIG. 4; FIG. 5 is a perspective view showing a state in which a first inner cylinder is arranged inside an outer cylinder in the dust collecting portion of FIG. 4 ; FIG. 5 is a perspective view showing a first inner cylinder that constitutes the dust collecting portion of FIG. 4; FIG. 5 is an exploded perspective view showing a second inner cylinder included in the dust collecting portion of FIG. 4; FIG. 5 is a cross-sectional view taken along line AA of FIG. 4; It is a sectional view showing a dust collection part concerning a modification.

Hereinafter, a vacuum cleaner 1 according to one embodiment of the present invention will be described in detail with reference to the drawings. In addition, in the following description, after an outline of the overall configuration of the vacuum cleaner 1 is described, the main part will be described in further detail. In the following description, unless otherwise specified, positional relationships in the vertical direction, the width direction, the front-rear direction, etc. will be described on the basis of the state in which the vacuum cleaner 1 is erected as shown in FIG.

<<Regarding the overall configuration of the electric vacuum cleaner 1>>
As shown in FIG. 1, the vacuum cleaner 1 is a vacuum cleaner having a stick-like (vertical) appearance. The vacuum cleaner 1 can be, for example, a rechargeable type or one that obtains power from an external power source via a power cord. As shown in FIG. 1, the electric vacuum cleaner 1 includes a cleaner main body 10, a dust collection section 50 (dust collection device), a suction port body 100, a pipe section 110, a cleaning tool 130, and the like.

The vacuum cleaner main body 10 is a part that constitutes the main body of the electric vacuum cleaner 1 and exerts a function of collecting dust by exerting a suction force. Specifically, as shown in FIGS. 2 and 3, the cleaner main body 10 includes an electric blower 14 for sucking air to generate an airflow, a battery 18, an electric blower 14, a battery 18, The board part 20 and other parts are incorporated.

The cleaner body 10 has a grip portion 16 . The grip portion 16 is a portion provided for the user of the vacuum cleaner 1 to grip the cleaner body 10 . That is, the electric vacuum cleaner 1 is configured such that the cleaner main body 10 can be held by the user, for example, by putting his/her fingers other than the thumb through the opening formed by the holding portion 16 . The cleaner body 10 has an exhaust port 15 (see FIG. 1) for discharging the air discharged from the electric blower 14 on at least one side in the left-right direction with respect to the front-rear direction in which the grip portion 16 extends.

As shown in FIG. 3 , the cleaner body 10 has an air passage forming portion 38 . The air passage forming portion 38 is a portion that forms an air passage 38b that communicates with the dust collecting portion 50. As shown in FIG. The air passage forming portion 38 is formed on the back side of the dust collecting portion 50 so as to extend in the vertical direction. The air passage 38 b has an air passage outlet 38 x connected to the dust collection inlet 52 b of the dust collection section 50 . Moreover, the air passage 38b has a suction port 38y that functions as a connection port for connecting the pipe portion 110 and the suction port body 100 to each other. The suction port 38 y is a portion that serves as an inlet for air that is sucked through the tube portion 110 and the suction port body 100 . The suction port 38 y opens at the lower end side of the air passage forming portion 38 .

The dust collection part 50 is a part where the dust sucked by the vacuum cleaner 1 is collected. As shown in FIGS. 1 to 3, the dust collection section 50 is provided so as to be continuous with the cleaner body 10 . Since the dust collecting part 50 has a characteristic structure in the electric vacuum cleaner 1, the specific structure thereof will be described in detail later.

As shown in FIG. 1 , the pipe portion 110 is a cylindrical member that detachably connects the cleaner main body 10 and the suction port body 100 . The pipe portion 110 has a shape such that one end can be inserted into the suction port 38 y provided in the cleaner body 10 , and the other end has a shape that can be connected to the suction port body 100 . By connecting the cleaner main body 10 and the suction port body 100 via the pipe portion 110, a series of communicating paths (air passages) from the suction port body 100 to the cleaner main body 10 can be formed.

The suction port body 100 is connected to the suction port 38 y of the cleaner main body 10 directly or indirectly via the tube portion 110 . The suction port body 100 has a suction port 103 and a joint portion 104 . The suction port 103 opens toward the bottom surface. Also, the joint portion 104 can be connected to the suction port 38 y or the tube portion 110 .

Cleaning tool 130 has mop 132 and mop storage case 134 . A mop 132 of the cleaning tool 130 can be taken in and out of a mop storage case 134 attached to the rear side of the tube portion 110 in the axial direction. The electric vacuum cleaner 1 can clean by removing the mop 132 from the mop housing case 134 in addition to sucking and cleaning the dust in the suction port 100 and the like.

The electric vacuum cleaner 1 is generally configured as described above. The electric vacuum cleaner 1 has a characteristic structure in each part such as the dust collection part 50 and the suction port body 100 . The structure of each part of the vacuum cleaner 1 will be described in more detail below.

<<Regarding the configuration of the dust collection unit 50>>
The dust collector 50 will be described in detail below with reference to FIGS. 4 to 10. FIG. The dust collection part 50 is provided detachably with respect to the main body 10 of the cleaner. The dust collector 50 is a so-called cyclone dust collector. That is, the dust collecting part 50 can collect dust in the process of introducing air from the dust collecting part inlet 52b provided in the outer cylinder 52, forming a whirling airflow in the outer cylinder 52, and discharging the air. It is The dust collector 50 may adopt a so-called single-stage or multi-stage separation system, but in the present embodiment, a single-stage separation system is adopted.

As shown in FIG. 4 and the like, the dust collection section 50 has an outer cylinder 52 (dust cup) and a structure 54, and a dust collection space 56 is formed therebetween. The dust collection section 50 is capable of forming a whirling airflow in which the air introduced into the dust collection space 56 swirls between the structure 54 and the outer cylinder 52 . The dust collecting part 50 is detachably attached to a position below the electric blower accommodating part 34 in the cleaner main body 10 .

The outer cylinder 52 is a container for accumulating dust inside. The outer cylinder 52 is a cylindrical body whose upper end side is open. As shown in FIGS. 4 to 6, the outer cylinder 52 has an opening 52a on one axial side (upper side in the illustrated example) and an outer cylinder bottom 52c on the other axial side (lower side in the illustrated example). It has a bottomed cylindrical shape. The bottom portion 52c of the outer cylinder may have a lid portion that can be opened and closed in order to dispose of dust accumulated in the outer cylinder 52. As shown in FIG. In addition, the outer cylinder 52 has a dust collection inlet 52b (inlet) on the periphery.

The dust collection inlet 52b is a portion that serves as an inlet for introducing air that is sucked into the air passage 38b from the suction port 38y and discharged from the air passage discharge port 38x. The dust collection inlet 52b is provided at a position corresponding to the air passage outlet 38x, and is positioned, for example, in the middle of the outer cylinder 52 in the axial direction (vertical direction). Therefore, by attaching the dust collecting portion 50 to the cleaner main body 10, the dust collecting portion inlet 52b and the air passage outlet 38x can be communicated with each other. Further, the dust collection inlet 52b can introduce the air discharged from the air passage outlet 38x into the dust collection space 56 in the tangential direction of the inner peripheral surface of the outer cylinder 52. As shown in FIG. Therefore, the air introduced into the dust collection space 56 from the dust collection inlet 52 b forms a swirling flow along the inner peripheral surface of the outer cylinder 52 .

As shown in FIGS. 4 and 6, the structure 54 is a member arranged inside the outer cylinder 52 . The structure 54 is a member forming a dust collection space 56 into which air flows between the structure 54 and the outer cylinder 52 . The structure 54 is arranged so that the outer cylinder 52 and the axial center position are substantially aligned. The structure 54 has a portion (tapered portion 70 to be described later) formed so that the outer shape becomes smaller from one axial direction side (upper side in the figure) toward the other side (lower side in the figure). The structure 54 has a first inner cylinder 60 (inner cylinder) and a one-side cylinder part 64, and further has a connection body 62 although it is not an essential configuration. The first inner cylinder 60 is connected to the one-side cylinder portion 64 , and is connected to at least one of the one-side cylinder portion 64 and the connection body 62 when the connection body 62 is provided.

As shown in FIGS. 4, 7, 8, etc., the first inner cylinder 60 has a tapered portion 70, preferably an extending portion 72. As shown in FIG. In addition, the first inner cylinder 60 includes a first guide portion 74 and a second guide portion 76 on the outer peripheral portion of the tapered portion 70, and a third guide portion 78 on the inner peripheral portion of the tapered portion 70 although this is not an essential configuration. It is considered to be equipped with

The tapered portion 70 is a portion formed so that the outer shape becomes smaller from one axial direction side (upper side in the figure) toward the other side (lower side in the figure). The tapered portion 70 is formed in a truncated cone shape, and is formed such that the outer peripheral surface is linearly inclined toward the axial center side from one axial direction side to the other axial direction side. The tapered portion 70 is provided with a closed portion 70a that opens toward one axial side (upper side) and is closed on the other axial side (lower side).

As shown in FIG. 4 , the tapered portion 70 is formed so that the outer diameter of the large-diameter portion 70 b on one side in the axial direction substantially matches the inner diameter of the outer cylinder 52 . A circumferential groove 70c extending in the circumferential direction is provided on the outer peripheral surface of the large diameter portion 70b. The tapered portion 70 is a first sealing member (first sealing member 70d) formed of an O-ring or the like mounted in the circumferential groove 70c to seal a gap formed between the tapered portion 70 and the inner peripheral surface of the outer cylinder 52. A stop 73 can be formed. That is, by setting the tapered portion 70 inside the outer cylinder 52 with the closing portion 70a directed toward the outer cylinder bottom portion 52c side, the first airtight member 70d mounted in the circumferential groove 70c and the inner circumference of the outer cylinder 52 A first sealing portion 73 in close contact with the surface is formed. Further, a dust collection space 56 is formed between the tapered portion 70 (first inner cylinder 60) and the outer cylinder 52 on the other side in the axial direction (on the outer cylinder bottom portion 52c side of the outer cylinder 52) relative to the first sealing portion 73. It is formed. In addition, the first sealing portion 73 is formed above the dust collecting portion inlet 52 b communicating with the dust collecting space 56 .

In addition to the function of forming the dust collection space 56 as described above, the tapered portion 70 also functions as a dust collection space exhaust portion 80 for exhausting air from the dust collection space 56 . Specifically, the tapered portion 70 is provided with a large number of vent holes 70e formed in the circumferential direction so as to communicate the inside and the outside. The tapered portion 70 may be formed by resin molding, or may be formed by the mesh member 82 . The mesh member 82 is a mesh made of a resin material, a metal material, or a combination thereof. Therefore, the mesh member 82 can trap dust contained in the air passing through the ventilation holes 70 e forming the dust collection space exhaust portion 80 . Resin molding makes the surface of the tapered portion 70 smoother than that of the mesh member 82, so that it is possible to reduce dust catching.

The extending portion 72 is a portion formed so as to extend further from the tapered portion 70 to the other side in the axial direction. It extends in the other direction. The extending portion 72 is formed so as to be spaced apart from the bottom portion 52c of the outer cylinder inside the dust collecting space 56 in the axial direction (upper side in the illustrated example). The extending portion 72 is formed to surround the closing portion 70a. As a result, the extending portion 72 has a cylindrical shape whose upper end side is closed by the closing portion 70a and whose lower end side is open. Since the extending portion 72 is provided so as to surround the periphery of the blocking portion 70a, air currents and dust rising from the bottom portion of the outer cylinder 52 collide with the blocking portion 70a at a position on the axial side of the dust collection space 56. However, it becomes difficult to spread in the direction intersecting with the axial direction. As a result, in vacuum cleaner 1 , dust such as hair and dust contained in the airflow is less likely to get entangled in tapered portion 70 . The extending portion 72 has a cylindrical shape. The extending portion 72 preferably has a cylindrical shape with the same outer dimensions from the top end to the bottom end, or a tapered cylindrical shape with the outer shape becoming smaller from the top end to the bottom end. As a result, it is possible to suppress the entanglement of the airflow and dust smoothly guided by the first guide portion 74 toward the other side in the axial direction (outer cylinder bottom portion 52 c ). In addition, the extension part 72 is not limited to a cylindrical shape, and may have a configuration in which a plurality of extension members extending in the axial direction are provided at intervals from each other.

Further, the closed portion 70a may have a convex shape toward the bottom portion of the outer cylinder 52 with respect to the outside, and more preferably may be curved. As a result, air currents and dust that have risen from the bottom of the outer cylinder 52 at a position on the axial side of the dust collection space 56 can be easily moved toward the extending portion 72 by the closing portion 70a.

In addition, the outer cylinder 52 is rotatably supported through an outer cylinder bottom portion 52c integrally formed as the bottom of the outer cylinder 52 or a support shaft provided on the periphery of the outer cylinder 52. A plurality of ribs (protrusions) 52d may be provided on the lid-shaped bottom portion 52c of the outer cylinder whose bottom can be opened and closed to prevent dust from moving due to the swirling airflow. A plurality of ribs 52d extend toward structure 54 and are circumferentially spaced apart. Further, as described above, the outer cylinder bottom portion 52c integrally formed as the bottom of the outer cylinder 52 or the outer cylinder bottom portion 52c having a cover-like shape capable of opening and closing the bottom of the outer cylinder 52 has a plurality of ribs 52d. Alternatively, or in addition to the plurality of ribs 52d, protrusions extending toward the structure 54 (blocking portion 70a) may be provided. When protrusions are provided along with the plurality of ribs 52d, the plurality of ribs 52d are spaced apart in a direction intersecting the axis (radial direction in this embodiment) around the protrusions. In addition, the projecting portion has a columnar shape, for example, a columnar shape, a prismatic shape, a columnar shape with a cross section, or a columnar shape tapered toward the structure 54 side, a prismatic shape, or a columnar shape with a cross section. good to do As a result, it is possible to suppress movement of the dust collected below the closing portion 70a due to the air current. If the bottom of the outer cylinder 52 is a lid-like one that can be opened and closed by rotation, the outer cylinder bottom 52c can be easily discarded even if dust gets entangled in the projections and ribs 52d.

As shown in FIGS. 7 and 8 , the first guide portion 74 is a rib-shaped portion provided on the outer peripheral side of the tapered portion 70 and is in contact with the inner peripheral surface of the outer cylinder 52 . The first guide portion 74 is configured so that the structure 54 is inserted into the outer cylinder 52 with the taper portion 70 and the extension portion 72 directed toward the bottom portion 52c of the outer cylinder. placed in between. The first guide portion 74 guides the airflow flowing into the dust collecting space 56 from the dust collecting portion inlet 52b and swirling in the direction along the inner circumference of the outer cylinder 52 to the other axial direction side (outer cylinder bottom portion 52c side). It functions as a guide member for The first guide portion 74 extends from one side in the axial direction to the other side (from the upper side to the lower side in the illustrated example) so as to approach the dust collecting portion inlet 52b. The end of the first guide portion 74 may reach the dust collecting portion inlet 52b. In other words, the first guide portion 74 moves from one side to the other side in the axial direction (from the upper side to the lower side in the illustrated example) in the swirling direction of the airflow with respect to the dust collecting section inlet 52b. It extends from an upstream position toward the dust collection inlet 52b. Although the first guide portion 74 is provided on the structure 54 as an example, the first guide portion 74 may be provided on the inner peripheral surface of the outer cylinder 52 . In this case, the first guide portion 74 preferably contacts the outer peripheral surface of the tapered portion 70 (structure 54).

The second guide portion 76 is a rib-shaped portion provided on the outer peripheral side of the tapered portion 70, like the first guide portion 74. As shown in FIG. The second guide portion 76 is a rib that functions as a guide member for guiding airflow flowing into the dust collection space 56 from the dust collection portion inlet 52b. The second guide portion 76 is formed between the outer cylinder 52 and the first inner cylinder 60 so as to intersect the axial direction and extend along the turning direction. The second guide portion 76 is connected to the end portion of the first guide portion 74 described above.

The third guide portion 78 is rib-shaped and provided on the inner peripheral side of the first inner cylinder 60 . The third guide portion 78 is arranged inside the internal space 84 of the first inner cylinder 60 . A plurality of third guide portions 78 are provided in the internal space 84 at predetermined intervals in the circumferential direction. The third guide portion 78 is formed to extend from one circumferential side of the internal space 84 to the other circumferential side. In the present embodiment, when the structure 54 is cut along a plane perpendicular to the axial direction and viewed from one side (upper side) in the axial direction, the base end portion of the third guide portion 78 (the inner portion of the tapered portion 70) The distal end portion (free end) is formed so as to come to a position away from the connection portion with the peripheral surface in the clockwise direction (the same direction as the turning direction). In addition, when the connection body 62 is provided, the third guide part 78 is arranged in the internal space 84 formed between the taper part 70 (first inner cylinder 60 ) and the connection body 62 .

The connection body 62 functions as an airflow outflow portion 67 for causing the air that has flowed into the dust collection space 56 to flow out of the dust collection portion 50. Although it is not an essential configuration, the airflow outflow portion 67 may include a filter. may have Moreover, the connecting body 62 may be detachably connected to the first inner cylinder 60 . In this case, the other end of the connecting body 62 in the axial direction is connected inside the first inner cylinder 60 . be. As shown in FIG. 4 and the like, the connection body 62 is configured by, for example, a tubular frame. Below, as an example, the connection body 62 will be described as the second inner cylinder 62A. The second inner cylinder 62A is arranged inside the first inner cylinder 60 (on the axial center side of the dust collecting portion 50). The second inner cylinder 62A is connected to both or one of the first inner cylinder 60 and the one-side cylinder portion 64 . In this embodiment, the second inner cylinder 62A is connected to the first inner cylinder 60. As shown in FIG. Thereby, an internal space 84 is formed between the first inner cylinder 60 and the second inner cylinder 62A. A plurality of the above-described third guide portions 78 are provided at predetermined intervals in the circumferential direction inside the internal space 84 .

As shown in FIG. 9, the second inner cylinder 62A has a second inner cylinder outer frame 90, a second inner cylinder inner frame 92, and a second inner cylinder filter 94 (filter).

The second inner cylinder outer frame 90 is cylindrical, and has a column portion 90a and an opening portion 90b at an intermediate portion in the cylinder axis direction. The strut portions 90a are columnar portions extending in the cylinder axis direction, and are provided in plurality (four in this embodiment) at predetermined intervals in the circumferential direction of the second inner cylinder outer frame 90 . The opening 90b is a portion of the outer frame 90 of the second inner cylinder that is opened between the supporting columns 90a, 90a arranged in the circumferential direction.

The second inner cylinder inner frame 92 is a tubular member arranged inside the second inner cylinder outer frame 90 . The second inner cylinder inner frame 92 has a column portion 92a and an opening portion 92b at an intermediate portion in the cylinder axis direction. The strut portions 92a are columnar portions extending in the axial direction of the cylinder, and are provided in plurality (four in this embodiment) at predetermined intervals in the circumferential direction of the inner frame 92 of the second inner cylinder. The opening 92b is a portion of the inner frame 92 of the second inner cylinder that is opened between the supporting columns 92a, 92a arranged in the circumferential direction.

The second inner cylinder filter 94 is for capturing dust contained in the air discharged from the annular space 84 via the second inner cylinder 62A. The second inner cylinder filter 94 has a mesh shape with a large number of fine holes. The second inner cylinder filter 94 is in a curved state along the second inner cylinder outer frame 90 and the second inner cylinder inner frame 92 . sandwiched between. As a result, the second inner cylinder filter 94 becomes the wall of the second inner cylinder 62A and passes through the opening 90b of the outer frame 90 of the second inner cylinder and the opening 92b of the inner frame 92 of the second inner cylinder. It is possible to capture dust contained in the air.

As shown in FIGS. 4 and 6, the one-side tubular portion 64 is provided in a direction away from the bottom side of the outer cylinder 52 (one side in the axial direction) with respect to the above-described second inner cylinder 62A. The one-side cylinder portion 64 is provided integrally with or detachable from the second inner cylinder 62A, and is provided at a position adjacent to the second inner cylinder 62A on the upper side. As shown in FIG. 6, the one-side cylindrical portion 64 has an enlarged diameter portion 64a, an intermediate portion 64b, and a filter placement portion 64c.

The enlarged diameter portion 64a is a portion that continues upward from the second inner cylinder 62A side. The enlarged diameter portion 64a is formed so as to expand in a tapered shape as it goes upward. Further, the intermediate portion 64b is a portion provided at a position adjacent to the enlarged diameter portion 64a on the upper side in the axial direction. The intermediate portion 64 b is formed to extend in the axial direction of the outer cylinder 52 . A peripheral groove 64d extending in the circumferential direction is provided on the outer peripheral surface of the one-side tubular portion 64 . The one-side cylinder portion 64 seals a gap formed between the one-side cylinder portion 64 and the inner peripheral surface of the outer cylinder 52 by an airtight member (second airtight member 64e) such as an O-ring mounted in the circumferential groove 64d. Two seals 65 can be formed. The inner diameter of the filter placement portion 64 c is substantially the same as the inner diameter of the outer cylinder 52 . Therefore, almost no gap is formed between the outer peripheral surface of the filter placement portion 64 c and the inner peripheral surface of the outer cylinder 52 .

In addition, the filter placement portion 64c has a stepped portion 64f formed in a portion forming a boundary with the intermediate portion 64b on the inner peripheral side. The stepped portion 64f is provided with an annular groove portion in which an airtight member 64j is arranged, and is brought into contact with the lower end portion of the second filter 64h to improve airtightness. A first filter 64g and a second filter 64h are arranged inside the filter arrangement portion 64c. The first filter 64g is a filter made of nonwoven fabric, sponge, or the like, for example. The first filter 64g is arranged on the stepped portion 64f. The second filter 64h has at least a pleated filter and a frame 64i surrounding the filter. The airtight member 64j contacts the lower end of the frame 64i. Moreover, the pleated filter forming the second filter 64h is arranged on the first filter 64g, and the frame 64i is provided inside so as to surround the first filter 64g. Further, the second filter 64h has an airtight member 64k disposed on the upper surface of the frame 64i, and the airtightness is improved by contacting the airtight member 64k with the intake side constituent portion 42a. By separating the pleated filter of the second filter 64h and the first filter 64g, the air is dispersed in the space, so that the surface of the pleated filter can be effectively utilized. As a result, it is possible to solve the problem that the filter is quickly clogged and the suction force is reduced.

In this embodiment, the inner cylinder 60 of the structure 54 is provided with a tapered portion 70 , and the terminal end portion (the radially outer end portion) of the tapered portion 70 is formed so as to be continuous with the outer peripheral surface of the one-side cylinder portion 64 . Although a specific example has been shown, the invention is not limited thereto. For example, as shown in FIG. 11, instead of the tapered portion 70, a tapered portion 70A arranged at a position different from the tapered portion 70 may be provided. That is, the tapered portion 70 is moved to a position away from the one-side tubular portion 64 to the other side in the axial direction (toward the bottom portion 52c of the outer tube), and is separated from the one-side tubular portion 64 in the axial direction. . In such a configuration, the tapered portion 70A has an umbrella shape (inverted umbrella shape) that protrudes toward the other side in the axial direction (the outer cylinder bottom portion 52c side). Even with such a configuration, it is possible to prevent dust such as hair and dust from entangling the structure 54 as in the vacuum cleaner 1 according to the above-described embodiment. Even in such a configuration, the dust collection inlet 52b is preferably formed so as to communicate with the outer cylinder bottom 52c side of the tapered portion 70A. More preferably, it is formed at a position close to the tapered portion 70A. Note that the first guide portion 74, the second guide portion 76 and the third guide portion 78 may not be provided on the tapered portion 70A.

Further, in the present embodiment, the extending portion 72 is separated from the outer cylinder bottom portion 52c in the axial direction, but the present invention is not limited to this. For example, as shown in FIG. 11, the extending portion 72 may be formed to reach the outer cylinder bottom portion 52c from the tapered portion 70A. In addition, FIG. 11 shows an example in which the tapered portion 70A has an inverted umbrella shape and the extending portion 72 is formed so as to reach the bottom portion 52c of the outer cylinder. and the one-side tubular portion 64 (where the tapered portion 70 is provided at a position closer to the one-side tubular portion 64), the extending portion 72 is connected to the bottom portion 52c of the outer cylinder. You may form so that it may reach to.

<<About the effect obtained by the configuration of the electric vacuum cleaner 1>>
Effects and the like obtained by the configuration of the electric vacuum cleaner 1 described above will be described below.

(1) The vacuum cleaner 1 of the present embodiment includes a cleaner body 10 having an electric blower 14, and a dust collection section 50 detachable from the cleaner body 10. The dust collection section 50 is a dust collection section. Formed between an outer cylinder 52 having an inlet 52b and an opening 52a provided on one side in the axial direction, a structure 54 arranged inside the outer cylinder 52, and the outer cylinder 52 and the structure 54 The structure 54 is characterized by having a tapered portion 70 formed so that the outer shape becomes smaller from one side to the other side in the axial direction.

In the vacuum cleaner 1 of this embodiment, a structure 54 arranged inside an outer cylinder 52 is provided with a tapered portion 70 whose outer shape becomes smaller from one side to the other side in the axial direction. As a result, the airflow that has flowed into the dust collection space 56 through the dust collection inlet 52b swirls in the dust collection space 56 under the influence of the inclination of the tapered portion 70, and flows toward the other side in the axial direction (the outer cylinder bottom portion 52c side). , making it difficult for dust such as hair and dust to cling to the structure 54 arranged inside the outer cylinder 52 .

(2) In the vacuum cleaner 1 of the present embodiment, the structure 54 includes the first inner cylinder 60 (inner cylinder) provided as the dust collection space exhaust portion 80 for exhausting the tapered portion 70 from the dust collection space 56. , and an extension portion 72 extending from the first inner cylinder 60 to the other side in the axial direction.

The electric vacuum cleaner 1 of this embodiment includes an extending portion 72 extending from the first inner cylinder 60 to the other side in the axial direction. With such a configuration, when an airflow that swirls in the dust collection space 56 and rises toward the taper portion 70 at a position on the axial center side of the dust collection space 56 is generated, the airflow and the air flow are included in the airflow. The extension 72 blocks the flow of dust. That is, with the above-described configuration, air currents and dust rising from the bottom of the outer cylinder 52 at a position on the axial side of the dust collection space 56 are less likely to spread in the direction intersecting the axial direction. As a result, in vacuum cleaner 1 , dust such as hair and dust contained in the airflow is less likely to get entangled in tapered portion 70 .

In addition, in the above-described embodiment, an example in which the extending portion 72 has a cylindrical shape is shown, but the present invention is not limited to this. The electric vacuum cleaner 1 can be provided with a brush or a tooth of a comb, for example, extending from the first inner cylinder 60 to the other side in the axial direction, and provided with this as the extension portion 72. .

(3) In the vacuum cleaner 1 in (2) described above in this embodiment, the outer cylinder 52 has an outer cylinder bottom portion 52c forming a bottom on the other axial direction side, and the extending portion 72 The side end is separated from the outer cylinder bottom 52c inside the dust collection space 56. As shown in FIG.

In the vacuum cleaner 1 of the present embodiment, the inner volume of the dust collection space 56 is reduced by separating the end portion of the extending portion 72 on the other side in the axial direction (the end portion on the outer cylinder bottom portion 52c side) from the outer cylinder bottom portion 52c. is sufficiently ensured, the airflow rising from the bottom portion 52c of the outer cylinder can be suppressed from spreading outward. That is, by configuring the vacuum cleaner 1 as described in (3) above, dust tends to collect below the first inner cylinder 60 and inside the extending portion 72 .

(4) The vacuum cleaner 1 of (2) or (3) described above in the present embodiment is characterized in that the end of the first inner cylinder 60 on the other side in the axial direction is closed.

The electric vacuum cleaner 1 of the present embodiment can avoid clogging of the end portion of the first inner cylinder 60 on the other side in the axial direction by dust due to the configuration described above.

In this embodiment, an example in which the end portion of the first inner cylinder 60 on the other side in the axial direction is closed is shown, but the present invention is not limited to this, and the other side in the axial direction of the first inner cylinder 60 is closed. It is also possible not to block the ends of the . When the other end of the first inner cylinder 60 in the axial direction is not closed, it is preferable to adopt a configuration in which the portion is not easily clogged with dust.

(5) In the vacuum cleaner 1 according to any one of (2) to (4) described above in the present embodiment, the dust collecting portion 50 is located between the first inner cylinder 60 and the outer cylinder 52 on one side in the axial direction. It is characterized by having a first guide portion 74 that extends from a position on the upstream side in the swirling direction of the airflow so as to approach the dust collecting portion inlet 52b as it goes from the second side toward the other side.

Since the vacuum cleaner 1 of the present embodiment includes the first guide portion 74 as described above, the airflow flowing into the dust collection space 56 from the dust collection portion inlet 52b is guided by the first guide portion 74. are smoothly guided toward the other side in the axial direction (outer cylinder bottom portion 52c). That is, in the electric vacuum cleaner 1 of the present embodiment, the swirling airflow that flows into the dust collection space 56 from the dust collection inlet 52b and is generated on one side (upper side) in the axial direction is made easier to move toward the other side in the axial direction. As a result, dust such as hair and dust contained in the airflow can be prevented from winding around the tapered portion 70 of the first inner cylinder 60 .

In this embodiment, an example in which the first guide portion 74 as described above is provided has been shown, but the present invention is not limited to this, and a configuration in which the first guide portion 74 is not provided, or a configuration in which the first guide portion 74 is not provided A configuration in which another guide member is provided in place of the one guide portion 74 may be employed. When the first guide portion 74 is not provided, for example, the shape of the dust collecting portion inlet 52b is optimized so that the inflow direction of the air flow at the dust collecting portion inlet 52b is directed to the other side in the axial direction (outer cylinder bottom portion 52c). It is better to take measures such as Further, when another guide member is provided in place of the first guide portion 74, as with the first guide portion 74, the air flow that has flowed into the dust collection space 56 from the dust collection portion inlet 52b is directed toward the other side in the axial direction. or guide the direction of the airflow to the other side in the axial direction until the airflow flowing in from the dust collection part inlet 52b makes one turn in the dust collection space 56 in the circumferential direction. It's good to do and do.

(6) In the vacuum cleaner 1 according to any one of (2) to (5) described above in the present embodiment, the dust collection section 50 guides the airflow flowing into the dust collection space 56 from the dust collection section inlet 52b. It has two guide portions 76, and the second guide portions 76 are provided between the first inner cylinder 60 and the outer cylinder 52 so as to extend in a direction crossing the axial direction. be.

Since the vacuum cleaner 1 of the present embodiment includes the second guide portion 76 as described above, the airflow can be smoothly introduced into the dust collection space 56 from the dust collection portion inlet 52b and swirled.

In addition, although the configuration in which the second guide portion 76 is provided is exemplified in the present embodiment, the present invention is not limited to this. Instead of the portion 76, a configuration that exhibits an equivalent function may be provided.

(7) In the vacuum cleaner 1 according to any one of (2) to (6) described above in the present embodiment, the structure 54 includes a one-side cylindrical portion 64 arranged on one side in the axial direction, The tube 60 can be connected to the one-side tube portion 64 .

The electric vacuum cleaner 1 of this embodiment can firmly hold the first inner cylinder 60 by configuring the inner cylinder 60 and the one-side cylinder portion 64 to be connected as described above.

(8) In the vacuum cleaner 1 according to any one of (2) to (6) described above in the present embodiment, the structure 54 includes a one-side tubular portion 64 arranged on one side in the axial direction, and the dust collection space 56, has an air flow outflow part 67 for flowing out air to the outside of the first inner cylinder 60, has a connecting body 62 arranged to extend in the axial direction inside the first inner cylinder 60, and has the first inner cylinder 60 and the connecting body 62 are connected.

Since the electric vacuum cleaner 1 of this embodiment is configured as described above, the first inner cylinder 60 can be firmly held by the connector 62 . In this embodiment, an example of the connecting body 62 is shown with the above-described configuration, but the present invention is not limited to this, and for example, the second inner cylinder 62A and the first inner cylinder 60 are connected. can be

(9) In the vacuum cleaner 1 according to any one of (1) to (8) described above in the present embodiment, the dust collecting portion 50 is located on one side in the axial direction of the dust collecting portion inlet 52b and the structure 54. It is characterized by having a sealing portion (first sealing portion 73 and second sealing portion 65 ) that seals with the outer cylinder 52 .

In the vacuum cleaner 1 of the present embodiment, as described above, the structure 54 and the outer cylinder 52 are sealed at the sealing portion provided on one side in the axial direction of the dust collecting portion inlet 52b. , the airtightness of the dust collection space 56 is high. Therefore, the vacuum cleaner 1 is unlikely to deteriorate in dust collection performance due to leakage of air or the like from the gap between the structure 54 and the outer cylinder 52 . In addition, it becomes difficult for an air current to flow from the dust collection space 56 to the outside through the gap between the structure 54 and the outer cylinder 52 . Therefore, it is possible to prevent dust from being drawn into the gap by such an air current.

In addition, although the structure which provided the 1st sealing part 73 was shown in this embodiment, this invention is not limited to this. The electric vacuum cleaner 1 of the present embodiment may be configured to be sealed only by the above-described second sealing portion 65 without providing the first sealing portion 73, for example.

(10) In the vacuum cleaner 1 of (1) described above in the present embodiment, the structure 54 is provided with a second inner cylinder 62A (inner cylinder) having an airflow outflow portion 67 for exhausting air from the dust collection space 56. , the tapered portion 70A is formed between the second inner cylinder 62A and the outer cylinder 52 so as to extend in a direction intersecting the axial direction, and the dust collecting portion inlet is formed on the other side of the tapered portion 70A in the axial direction. 52b is arranged.

Since the vacuum cleaner 1 of the present embodiment is configured as described above, the dust collecting portion An airflow containing dust can be introduced from the inlet 52b and separated into air and dust. Further, the electric vacuum cleaner 1 of the present embodiment has the above-described configuration, so that after the air and dust are separated in the dust collection space 56, the airflow that has passed through the tapered portion 70A and rises to one side in the axial direction is generated. , to the outside of the dust collection section 50 from the air flow outlet section 67 . Therefore, according to the electric vacuum cleaner 1 of the present embodiment, the structure 54 is less likely to be entangled with dust such as hair and dust.

(11) In the vacuum cleaner 1 of (1) described above in the present embodiment, the tapered portion 70A is formed between the second inner cylinder 62A and the outer cylinder 52 so as to extend in a direction intersecting the axial direction. , air flows in between the tapered portion 70A and the outer cylinder bottom portion 52c of the outer cylinder 52 from the dust collecting portion inlet 52b.

Since the vacuum cleaner 1 of the present embodiment is configured as described above, the dust collection space 56 is provided from the dust collection inlet 52b between the tapered portion 70A and the outer cylinder bottom 52c of the outer cylinder 52. , dust-laden airflow can be introduced to separate air and dust. Therefore, according to the electric vacuum cleaner 1 of the present embodiment, the structure 54 is less likely to be entangled with dust such as hair and dust.

(12) In the vacuum cleaner 1 of (10) or (11) described above in the present embodiment, the dust collecting portion inlet port 52b is located between the outer cylinder bottom portion 52c of the outer cylinder 52 and the tapered portion 70A in the axial direction. It is characterized in that it is arranged at a position close to the tapered portion 70A with respect to the bottom portion 52c of the outer cylinder.

As described above, the vacuum cleaner 1 of the present embodiment introduces an airflow into the dust collection space 56 from the dust collection inlet 52b at a position near the tapered portion 70A with respect to the outer cylinder bottom 52c in the axial direction. be able to. As a result, dust contained in the swirling airflow inside the dust collection space 56 can be smoothly guided to the other side in the axial direction by the tapered portion 70A, so that entanglement with the structure 54 can be suppressed. .

(13) The vacuum cleaner 1 according to any one of (1) to (12) described above in the present embodiment is characterized in that the tapered portion 70 is provided with a mesh member 82 having a vent hole 70e.

The electric vacuum cleaner 1 of the present embodiment can accurately capture dust contained in the airflow coming out of the dust collection space 56 by adopting the configuration described above.

(14) The vacuum cleaner 1 of (13) described above in this embodiment is characterized in that the mesh member 82 is made of a resin material, a metal material, or a combination thereof.

The electric vacuum cleaner 1 of the present embodiment is provided with the mesh member 82 made of a resin material, a metal material, or a combination thereof as described above, so that the mesh member 82 can accurately trap dust. In addition, if the mesh member 82 is made of a metal material, it becomes difficult for dust to adhere to the mesh member 82 .

In this embodiment, an example in which the mesh member 82 formed of the material as described above is provided has been shown, but the present invention is not limited to this, and other materials effective against adhesion of dust are shown. may be employed as the mesh member 82 .

(15) In the vacuum cleaner 1 of (8) described above in the present embodiment, the airflow outflow portion 67 is provided in a wall portion (first inner cylinder 60) made of a metal material, a resin material, or a combination thereof. is formed with holes.

The electric vacuum cleaner 1 of the present embodiment can capture dust contained in the airflow passing through the airflow outflow portion 67 by adopting the configuration described above. In addition, by reducing the roughness of the surface of the wall, adhesion of dust can be suppressed.

(16) The vacuum cleaner 1 of this embodiment is characterized in that the first guide portion 74 and the second guide portion 76 are connected.

Since the vacuum cleaner 1 of this embodiment is configured in this way, dust does not enter the boundary between the first guide portion 74 and the second guide portion 76 .

(17) The vacuum cleaner 1 of this embodiment is characterized in that the second guide portion 76 extends along the turning direction.

Since the vacuum cleaner 1 of the present embodiment is configured as described above, the airflow flowing into the dust collection space 56 along the second guide portion 76 can be swirled smoothly.

(18) The vacuum cleaner 1 of the present embodiment is characterized in that the first guide portion 74 extends toward the dust collecting portion inlet 52b.

Since the electric vacuum cleaner 1 of the present embodiment is configured as described above, after flowing into the dust collection space 56 from the dust collection part inlet 52b, the airflow that is about to reach the dust collection part inlet 52b is It can be guided to the cylinder bottom portion 52c side. As a result, the airflow that has flowed in from the dust collecting portion inlet 52b is prevented from swirling without moving toward the outer cylinder bottom portion 52c side from the position of the dust collecting portion inlet 52b. It is possible to suppress the entanglement of dust such as hair and dust.

(19) In the vacuum cleaner 1 of (2) to (8) described above in the present embodiment, the interior of the first inner cylinder 60 has an internal space 84 into which an air flow can flow from the outside of the first inner cylinder 60. A third guide portion 78 is provided and formed so as to extend from the inner peripheral surface of the first inner cylinder 60 , and is arranged in the internal space 84 .

In the vacuum cleaner 1 of the present embodiment, it can be expected that the airflow flowing into the internal space 84 from the first inner cylinder 60 is guided by the third guide portion 78 and forms a swirling flow inside the internal space 84. . As a result, the dust contained in the air flow that has flowed into the internal space 84 can be separated from the air and collected, and the cleaned air can be discharged from the inner cylinder 60 to the outside.

In this embodiment, an example in which the third guide portion 78 is provided is shown, but the present invention is not limited to this, and the third guide portion 78 may be configured without the third guide portion 78. Instead, a swirl flow may be generated in the internal space 84 by providing another configuration.

(20) The vacuum cleaner 1 of this embodiment includes a first airtight member 70d for sealing between the first inner cylinder 60 and the outer cylinder 52, and a Any one characterized by having at least one of the second airtight members 64e for sealing the gap may be used.

With such a configuration, the vacuum cleaner 1 can suppress leakage of air and dust from the gap between the first inner cylinder 60 and the outer cylinder 52 . In the present embodiment, the configuration in which the airtightness between the first inner cylinder 60 and the outer cylinder 52 is improved by providing both the first airtight member 70d and the second airtight member 64e was illustrated, but at least one If the airtight member is provided, the same effect as the vacuum cleaner 1 of the above embodiment can be expected.

(21) As shown in FIG. 10, the vacuum cleaner 1 of the present embodiment includes a first virtual plane A and a second virtual plane which include an axis line passing through the axial center position of the dust collection section 50 and which are perpendicular to each other. Assuming four virtual areas X1 to X4 classified by B, the dust collecting section inlet 52b communicates with the inside of the dust collecting section 50 in the virtual area X1, which is one of the four virtual areas. In addition, it is characterized in that it is arranged at a position biased toward one side (virtual area X2 in the illustrated example) of the two adjacent virtual areas X2 and X3 with respect to the virtual area X1.

Since the vacuum cleaner 1 of the present embodiment is configured as described above, the airflow that flows in from the dust collecting part inlet 52b collides with the outer peripheral surface of the first inner cylinder 60 and the inner peripheral surface of the outer cylinder 52. can reduce the possibility of attenuation. As a result, the electric vacuum cleaner 1 allows the airflow flowing through the dust collecting section inlet 52b to smoothly flow into the dust collecting space 56 with almost no loss of momentum and swirl, thereby enhancing the separation efficiency between dust and air. can.

(22) In the vacuum cleaner 1 of the present embodiment, the dust collection inlet 52b can introduce airflow in the tangential direction of at least one of the outer peripheral surface of the first inner cylinder 60 and the inner peripheral surface of the outer cylinder 52. It is characterized by being formed as follows.

Since the vacuum cleaner 1 of the present embodiment is configured as described above, most of the airflow that has flowed in from the dust collecting part inlet 52b is It can be made to flow along the peripheral surface. As a result, the possibility that the airflow flowing in from the dust collecting part inlet 52b collides with the outer peripheral surface of the first inner cylinder 60 and the inner peripheral surface of the outer cylinder 52 and is attenuated is reduced. It can be smoothly and vigorously flowed in and turned. Therefore, with the configuration described above, the efficiency of separating dust and air can be enhanced.

(23) In order to solve the problem of the prior art, such as Patent Document 1, that dust such as hair and dust tends to wind around the inside of the dust collection container, the vacuum cleaner 1 of the present embodiment has an electric blower 14 for cleaning. A cleaner main body 10 and a dust collector 50 that can be attached to and detached from the cleaner main body 10 are provided. Between the cylinder 52, the structure 54 arranged inside the outer cylinder 52, the dust collection space 56 formed between the outer cylinder 52 and the structure 54, and between the structure 54 and the outer cylinder 52, and a first guide portion 74 extending from a position on the upstream side in the swirling direction of the airflow so as to approach the dust collecting portion inlet 52b from one side to the other side in the axial direction. be.

Since the vacuum cleaner 1 of the present embodiment includes the first guide portion 74 as described above, the airflow flowing into the dust collection space 56 from the dust collection portion inlet 52b is guided by the first guide portion 74. are smoothly guided toward the other side in the axial direction (outer cylinder bottom portion 52c). That is, in the electric vacuum cleaner 1 of the present embodiment, the swirling airflow that flows into the dust collection space 56 from the dust collection inlet 52b and is generated on one side (upper side) in the axial direction is made easier to move toward the other side in the axial direction. be able to. As a result, dust such as hair and dust contained in the airflow can be prevented from winding around the structure 54 . Therefore, it is possible to provide an electric vacuum cleaner capable of suppressing dust such as hair and dust from entangling in the dust collector.

The present invention is not limited to the above-described embodiments, modifications, and the like, and other embodiments are possible in accordance with the teachings and spirit of the claims without departing from the scope of the claims. The constituent elements of the above-described embodiments may be arbitrarily selected and combined. Any component of the embodiment and any component described in the means for solving the invention or a component embodying any component described in the means for solving the invention may be arbitrarily combined. may be configured We intend to acquire the rights for these as well in the amendment of the present application or in the divisional application.

INDUSTRIAL APPLICABILITY The present invention can be suitably used in vacuum cleaners in general, such as vertical type, canister type, and robot cleaner.

Reference Signs List 1: Vacuum cleaner 10: Vacuum cleaner main body 14: Electric blower 50: Dust collection part 52: Outer cylinder 52a: Opening 52b: Dust collection part inlet 52c: Outer cylinder bottom 54: Structure 56: Dust collection space 60: First inner cylinder 62 : Second inner cylinder 64 : One side cylinder part 64e : Second airtight member 65 : Second sealing part 67 : Air flow outflow part 70 : Taper part 70d : First airtight member 70e : Air hole 72 : Extension part 73 : First sealing part 74 : First guide part 76 : Second guide part 78 : Third guide part 80 : Dust collection space exhaust part 82 : Mesh member 84 : Annular space 94 : Second inner cylinder filter A: First virtual surface B: Second virtual surface X1: Virtual area X2: Virtual area X3: Virtual area X4: Virtual area

Claims (15)

a vacuum cleaner body having an electric blower;
a dust collector detachable from the vacuum cleaner body;
with
The dust collector is
an outer cylinder having an inlet and an opening provided on one side in the axial direction;
a structure arranged inside the outer cylinder;
a dust collection space formed between the outer cylinder and the structure;
has
The structure is
A vacuum cleaner comprising a tapered portion formed so that the outer shape becomes smaller from one axial side to the other axial direction. The structure is
an inner cylinder having the tapered portion as a dust collection space exhaust portion for exhausting air from the dust collection space;
an extending portion extending from the inner cylinder toward the other side in the axial direction;
The vacuum cleaner according to claim 1, characterized by comprising: The outer cylinder has an outer cylinder bottom forming a bottom on the other side in the axial direction,
3. The electric vacuum cleaner according to claim 2, wherein the end portion of the extending portion on the other side in the axial direction is separated from the bottom portion of the outer cylinder inside the dust collecting space. 4. The electric vacuum cleaner according to claim 2, wherein the inner cylinder is closed at the other end in the axial direction. The dust collector is arranged between the inner cylinder and the outer cylinder so as to approach the inlet from a position on the upstream side in the swirling direction of the airflow as it goes from one side to the other side in the axial direction. The vacuum cleaner according to any one of claims 2 to 4, further comprising an extending first guide portion. The dust collector has a second guide portion that guides an airflow flowing into the dust collection space from the inlet,
6. The method according to any one of claims 2 to 5, wherein the second guide portion is provided between the inner cylinder and the outer cylinder so as to extend in a direction intersecting with the axial direction. Vacuum cleaner as described. The structure is
including a one-side tubular portion arranged on one side in the axial direction,
The electric vacuum cleaner according to any one of claims 2 to 6, wherein the inner cylinder is connected to the one side cylinder portion. The structure is
including a one-side tubular portion arranged on one side in the axial direction,
a connection body having an air flow outlet for discharging air to the outside of the dust collection space and extending in the axial direction inside the inner cylinder;
The electric vacuum cleaner according to any one of claims 2 to 6, wherein the inner cylinder and the connector are connected. The dust collector according to any one of claims 1 to 8, wherein the dust collector has a sealing portion that seals between the structure and the outer cylinder on one side of the inlet in the axial direction. The vacuum cleaner according to any one of claims 1 to 3. The structure includes an inner cylinder having an air flow outlet for exhausting air from the dust collection space,
The tapered portion is formed between the inner cylinder and the outer cylinder so as to extend in a direction intersecting with the axial direction,
2. The electric vacuum cleaner according to claim 1, wherein the inlet is arranged on the other side in the axial direction with respect to the tapered portion. The structure includes an inner cylinder having an air flow outlet for exhausting air from the dust collection space,
The tapered portion is formed between the inner cylinder and the outer cylinder so as to extend in a direction intersecting with the axial direction,
2. The electric vacuum cleaner according to claim 1, wherein air flows from said inlet between said tapered portion and the bottom of said outer cylinder. 12. The inflow port is arranged between the bottom of the outer cylinder and the tapered portion in the axial direction and at a position close to the tapered portion. The vacuum cleaner described in . The vacuum cleaner according to any one of claims 1 to 12, wherein the tapered portion is provided with a mesh member. The vacuum cleaner according to claim 13, wherein the mesh member is made of a resin material, a metal material, or a combination thereof. 9. The vacuum cleaner according to claim 8, wherein the air flow outflow portion is formed with a plurality of holes in a wall portion made of a metal material, a resin material, or a combination thereof.

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