CN222804226U - Electric dust collector - Google Patents

Abstract

Provided is an electric dust collector which can reliably close a cover body of a closed dust collecting chamber when separating the electric dust collector from a station, and can easily open the cover body of the closed dust collecting part when connecting with the station, comprising the electric dust collector capable of connecting with the station. The electric dust collector comprises a station and an electric dust collector capable of being connected with and separated from the station. The electric vacuum cleaner includes a cleaner main body having a first electric blower, a main body separation dust collecting part, a cover, a holding part, and a suction pipe. The cover body includes a cover main body, a rotation fulcrum portion, and a receiving portion including a first magnetic body. The holding part has a second magnetic body which can be attracted to the first magnetic body at a position opposite to the bearing part when the cover body performs the closing operation, applies an attraction force to the first magnetic body in a state that the electric vacuum cleaner is separated from the station to maintain a closed state based on the closing operation of the cover body, and reduces the attraction force to the first magnetic body in a state that the electric vacuum cleaner is connected to the station to allow the opening operation of the cover body.

Description

Electric dust collector

Technical Field

Embodiments of the present utility model relate to an electric dust collection device.

Background

Conventionally, as an electric vacuum cleaner, a so-called canister type is generally used in which sucked dust is stored in a dust collection bag provided in a main body, and when a certain amount of dust is stored, the dust collection bag is discarded together. In addition, there has been proposed an electric dust collector in which dust temporarily accumulated in the electric dust collector is transferred by a transfer wind (an air flow generating a transfer force by a negative pressure) generated on the station side every time the electric dust collector is connected (mounted) to a dedicated station after the dust collection is completed, and the dust is not left on the electric dust collector side.

Patent document 1 Japanese patent application laid-open No. 2022-183897

However, in the case of the electric vacuum cleaner capable of being connected to the station as described above, the cover of the dust collection unit that temporarily stores dust may need to be configured to be openable and closable so that the sucked dust can be automatically transferred to the station side. The lid is sometimes maintained in a closed state by a biasing member (e.g., a spring). In such a case, when the electric vacuum cleaner is transported, connected to a station, or the like, the cover may be opened or a gap may be generated between the cover and the dust collecting portion due to vibration or the like. Therefore, dust that is not easily collected may be spilled. Further, a structure for mechanically fixing the lid is also considered, but the structure may be complicated or the opening operation of the lid may not be smoothly performed when the lid is connected to the station, and it may be difficult to use the lid.

Disclosure of utility model

An example of the problem to be solved by the present utility model is to provide an electric dust collector including an electric dust collector capable of being connected to a station, wherein when the electric dust collector is separated from the station, a cover closing a dust collection chamber can be reliably closed, and when the electric dust collector is connected to the station, the cover closing the dust collection chamber can be easily opened.

An electric dust collector according to one embodiment of the present utility model includes a station and an electric dust collector that can be connected to and disconnected from the station. The electric dust collector comprises a dust collector main body provided with a first electric blower for generating an attractive force for attracting dust, a main body separation dust collecting part, a cover body for opening and closing a waste port arranged on the main body separation dust collecting part, a holding part capable of holding the cover body to be closed, and a suction pipe provided with an attractive port for sucking air by the attractive force of the first electric blower. The main body separation dust collection unit includes a separation unit that separates dust from air containing the dust, and a dust collection chamber that accumulates the dust separated by the separation unit and has the disposal port in a part thereof that can discharge the accumulated dust. The cover body includes a cover main body, a rotation fulcrum portion provided on one end side of the cover main body, and a receiving portion including a first magnetic body provided on the other end side of the cover body than the rotation fulcrum portion. The holding portion has a second magnetic body capable of being attracted to the first magnetic body at a position facing the receiving portion when the lid body is closed, and applies an attraction force to the first magnetic body in a state in which the electric vacuum cleaner is separated from the station, maintains a closed state by the closing operation of the lid body, and reduces the attraction force to the first magnetic body in a state in which the electric vacuum cleaner is coupled to the station, thereby allowing the opening operation of the lid body. The station includes a dust inlet connected to the waste port when the electric vacuum cleaner is connected, a recovery dust collecting unit connected to the dust inlet and capable of receiving the dust collected in the main body separation dust collecting unit, and a second electric blower for applying negative pressure to the main body separation dust collecting unit via the recovery dust collecting unit to generate a transfer force for transferring the dust collected in the main body separation dust collecting unit to the recovery dust collecting unit.

Further, the holding portion may be moved to a retracted position separated from an opposing position opposing the receiving portion in conjunction with a connection operation for connecting the vacuum cleaner to the station, for example.

Further, the holding portion may be provided with the second magnetic body, for example, and may be moved to a retracted position separated from a facing position of the receiving portion in conjunction with a connection operation of the vacuum cleaner to the station.

Further, the second magnetic body may be an electromagnet, for example, and electromagnetic induction may be stopped when connection of the vacuum cleaner to the station is detected.

Further, the electric vacuum cleaner may be, for example, an electric vacuum cleaner having a grip portion capable of being gripped and capable of being connected to the station in a mounting posture in which the vacuum cleaner body is raised, and the rotation fulcrum portion may be located above the disposal port when the electric vacuum cleaner is in the mounting posture in which the suction port is located below the station.

Further, the receiving portion including the first magnetic body may be formed on the opposite side of the lid body with respect to the rotation fulcrum portion, for example, with a closing portion closing the discard opening interposed therebetween.

Effects of the utility model

According to the electric dust collector with the above structure, for example, in a state that the electric dust collector is separated from the station, the cover body keeps a closed state relative to the main body separating dust collecting part by the adsorption force between the bearing part and the holding part, and dust can be prevented from being spilled from the dust collecting chamber. In addition, in a state where the electric vacuum cleaner is connected to the station, the suction force between the receiving portion and the holding portion is reduced to form a state where the cover is easily opened, and the collected dust can be smoothly transferred to the station.

Drawings

Fig. 1 is an exemplary and schematic perspective view showing an electric dust collector constituted by an electric dust collector and a station of the embodiment.

Fig. 2 is an exemplary and schematic sectional view showing a section of an upper region of the electric dust collection device constituted by the electric dust collector and the station shown in fig. 1.

Fig. 3 is an exemplary and schematic cross-sectional view showing a cross-section of a lower region of the electric dust collection device constituted by the electric dust collector and the station shown in fig. 1.

Fig. 4 is an exemplary and schematic perspective view showing a state in which the waste port (coarse dust waste port and fine dust waste port) of the electric vacuum cleaner according to the embodiment is closed by the cover that performs the closing operation.

Fig. 5 is an exemplary and schematic perspective view showing a state in which the waste port (coarse dust waste port and fine dust waste port) of the electric vacuum cleaner according to the embodiment is opened by the cover body which has been opened.

Fig. 6 is an exemplary and schematic partial cross-sectional view showing a positional relationship between a fine dust disposal port and a fine dust collecting part of the electric vacuum cleaner of the embodiment.

Fig. 7 is an exemplary and schematic perspective view showing a state in which the cover of the electric vacuum cleaner according to the embodiment is removed to expose the waste port (coarse dust waste port and fine dust waste port).

Fig. 8 is an exemplary and schematic perspective view showing a state in which the waste port (coarse dust waste port and fine dust waste port) of the electric vacuum cleaner according to the embodiment is closed by the cover.

Fig. 9 is an exemplary and schematic partial cross-sectional view showing another positional relationship between a coarse dust collecting part (coarse dust discarding port) and a fine dust collecting part (fine dust discarding port) of the electric vacuum cleaner according to the embodiment.

Description of symbols

1, An electric dust collection device; 10 electric vacuum cleaner, 11 holding part, 12 station, 14 vacuum cleaner body, 15 suction pipe, 16 suction inlet body, 18 support part, 20 station main body part, 24 first electric blower, 28 main body separate dust collecting part, 30 first separate dust collecting part, 32 second separate dust collecting part, 34 coarse dust separating part, 34a support body, 34b first filter, 36 coarse dust collecting part, 37 coarse dust collecting chamber, 38 fine dust separating part, 40 fine dust collecting part, 41 fine dust collecting chamber, 42 communicating pipe part, 44 second electric blower, 45 dust inlet, 46 recovery dust collecting part, 48 waste opening, 50 coarse dust discarding opening, 52 fine dust discarding opening, 54 cover body, 56 cover main body, 58 rotary pivot point part, 60 bearing part, 62 first magnetic body, 64 holding part, 66 second magnetic body.

Detailed Description

Hereinafter, embodiments will be described with reference to the drawings. In the present specification, the constituent elements of the embodiments and the descriptions of the constituent elements are sometimes described in a plurality of expressions. The constituent elements and the descriptions thereof are examples, and are not limited by the expressions of the present specification. The constituent elements may be specified by names different from those in the present specification. The constituent elements may be described in terms of expressions different from those of the present specification.

< Construction of electric dust collector 1 >

Fig. 1 is an exemplary and schematic perspective view showing an electric dust collector 1 composed of an electric dust collector 10 and a station 12 of the embodiment. As shown in fig. 1, the electric vacuum cleaner 1 includes an electric vacuum cleaner 10 and a station 12. Arrows X1 and X2 are shown in the figures. In the present embodiment, arrows X1 and X2 are along the vertical direction. Arrow X1 coincides with the upper side and arrow X2 coincides with the lower side.

The electric vacuum cleaner 10 is a stick-type electric vacuum cleaner including a grip 11 that can be gripped by a user, an extension pipe 17 that extends from (is detachably connected to) the vacuum cleaner body 14, and a suction port body 16 that can be attached to a front end (lower end) of the extension pipe 17, in an upper portion of the vacuum cleaner body 14. The suction port body 16 is connected to the cleaner body 14 via an extension pipe 17, and sucks air by suction force of a first electric blower described later. The electric vacuum cleaner 10 drives a first electric blower, which will be described later, by operating a switch or the like of an operation portion 14a provided in a part of the cleaner body 14, and generates an air flow (attractive air flow) flowing inside the cleaner body 14 and the extension pipe 17. As a result, the electric vacuum cleaner 10 sucks dust and the like existing on the floor surface, for example, as a suction target from the suction port body 16. Then, the sucked dust is temporarily accumulated in a dust collection unit provided in the cleaner body 14. A brush that is rotated by a motor or the like may be provided in the suction port body 16, and dust present on the dust collection surface, for example, in a groove or the like, can be scraped off and effectively sucked. The vacuum cleaner 10 can be attached to and detached from the station 12 in an attachment posture in which the suction port body 16 is set up with the extension pipe 17 set down. That is, the electric vacuum cleaner 10 can be attached to and detached from the station 12 in an attachment posture in which the suction port body 16 is provided on the lower side of the cleaner body 14 with respect to the standing extension tube 17. The suction port body 16 is also referred to as a suction port body.

The station 12 is composed of a cylindrical pillar portion 18 and a box-shaped station main body portion 20. The station 12 is connected to a commercial power supply, for example. The station 12 has a structure capable of coupling and uncoupling the electric vacuum cleaner 10. The station 12 can mechanically link (support) the electric cleaner 10 via a hook or the like, and can be electrically connected via an electrical contact. When the electric vacuum cleaner 10 is connected to the station 12, dust accumulated (collected) in the vacuum cleaner body 14 can be collected in the station body 20. Details of the operation in the case of transferring dust from the vacuum cleaner 10 to the station 12 will be described later. When the vacuum cleaner 10 is connected to the station 12, a battery mounted in the vacuum cleaner 10, for example, in the grip 11 can be charged.

Fig. 2 is an exemplary and schematic cross-sectional view showing a cross-section of an upper region of the electric dust collection device 1 constituted by the electric dust collector 10 and the station 12 shown in fig. 1. Fig. 3 is an exemplary and schematic sectional view showing a cross section of a lower region of the electric dust collector 1 constituted by the electric dust collector 10 and the station 12 shown in fig. 1.

As shown in fig. 2, a battery 22 for driving the electric vacuum cleaner 10 is built in an upper portion of the cleaner body 14 of the electric vacuum cleaner 10. The cleaner body 14 includes a first electric blower 24, a main body separation dust collecting unit 28, and a suction pipe 15. The suction tube 15 includes a suction port 15a (see fig. 7 and 8) communicating with the extension tube 17. The suction tube 15 is connected to the extension tube 17. As described above, by operating the switch or the like of the operation unit 14a, the cleaner body 14 receives power from the battery 22 and drives the first electric blower 24 incorporated therein, thereby generating attractive air flow (suction air). The suction air flows in the direction of arrow X1 in the extension pipe 17 and the suction pipe 15 with the suction port body 16 side upstream, and is discharged to the outside of the electric vacuum cleaner 10 via the first electric blower 24. That is, the suction port 15a of the suction tube 15 sucks in air by the suction force of the first electric blower 24. The main body separation dust collection unit 28 is provided between the first electric blower 24 and the suction pipe 15, and collects dust sucked by the suction air. In the above-described mounting posture, the suction port 15a of the suction tube 15 is located on the lower side with respect to the main body separation dust collection portion 28.

The main body separation dust collection portion 28 is formed of, for example, a two-stage structure of a first separation dust collection portion 30 and a second separation dust collection portion 32.

The first dust separating and collecting unit 30 includes a coarse dust separating unit 34 and a coarse dust collecting unit 36 for accumulating (collecting) coarse dust separated by the coarse dust separating unit 34. The coarse dust separating unit 34 is composed of a cylindrical support body 34a having one end opened and the other end closed, and a first filter 34b, for example, in the form of a sheet, supported on the periphery of the support body 34 a. The coarse dust separating unit 34 is disposed such that one end of the support body 34a is a lower end and the other end is an upper end in the mounted posture. The first filter 34b is a filter for separating coarse dust of a first particle size (for example, a particle size of a wire dust or the like) or more from air containing dust by filtration. A coarse dust collecting portion 36 is formed on the open side (the arrow X2 direction side in fig. 2) of the coarse dust separating portion 34. The coarse dust is not limited to the above.

The coarse dust collecting part 36 is provided with a coarse dust collecting chamber 37 (dust collecting space). The coarse dust collecting chamber 37 communicates with the suction pipe 15 via an opening/closing valve 29 f. The opening/closing valve 29f is, for example, a sheet-shaped flexible valve formed of a rubber material or the like, a part of which is fixed to the peripheral wall of the cleaner body 14. When the electric vacuum cleaner 10 is used, the first electric blower 24 opens the on-off valve 29f in the direction of arrow X1 in the drawing by the suction force of the suction air generated by the first electric blower 24, and introduces the dust transferred together with the air (suction air) flowing through the suction pipe 15 into the first dust separating and collecting unit 30. Coarse dust of the first particle size or more, which moves to the dust of the first separated dust collecting part 30 together with the air (suction air), is collected by the first filter 34 b. The collected coarse dust is accumulated (collected) by its own weight in the coarse dust collection chamber 37 of the coarse dust collection unit 36 when the suction air is stopped. When the electric vacuum cleaner 10 (the first electric blower 24) is stopped, the on-off valve 29f is closed, and the coarse dust stored in the coarse dust collecting chamber 37 is prevented from flowing backward toward the suction pipe 15.

The dust smaller than the first particle size (for example, the dust having a particle size smaller than that of the dust, etc.) after passing through the first dust separating and collecting unit 30 together with the suction air moves to the second dust separating and collecting unit 32 provided closer to the first electric blower 24 than the first dust separating and collecting unit 30.

At least a part of the second dust separating and collecting part 32 is located above the first dust separating and collecting part 30 in the mounted posture. The second separation dust collection unit 32 is composed of a fine dust separation unit 38 for separating fine dust of a second particle size or more contained in the suction air (air) passing through the coarse dust separation unit 34 (first filter 34 b), and a fine dust collection unit 40 for accumulating fine dust separated by the fine dust separation unit 38. The second particle size is smaller than the first particle size. In addition, the fine dust is not limited to the above. The fine dust separating portion 38 includes, for example, a cylindrical second filter 38a (e.g., a pleated filter). That is, the second filter 38a is a filter for separating fine dust of a second particle size or more from air containing dust by filtration. The second filter 38a extends in the up-down direction in the mounted posture. The cylindrical shape of the second filter 38a may be, for example, a corrugated shape having a concave-convex shape formed by repeating folding in the circumferential direction as in the case of a pleated filter, or may not have a concave-convex shape. The cylinder may be a cylinder, an elliptical cylinder, a polygonal cylinder such as a square, a truncated cone, or the like. The second filter 38a is an example of a filter.

The fine dust collecting part 40 is provided with a fine dust collecting chamber 41 (dust collecting space). At least a part (as an example, a part) of the fine dust collecting chamber 41 is formed around the coarse dust separating part 34. In the case of the present embodiment, the fine dust collecting chamber 41 (dust collecting space) is formed so as to surround the coarse dust separating part 34. In the mounted posture, at least a part of the fine dust collecting chamber 41 is located below the fine dust separating part 38. The fine dust separation portion 38 communicates with the downstream side of the first separation dust collection portion 30 via the fine dust collection chamber 41 in the suction air (air flow) generated by the suction force of the first electric blower 24. When the electric vacuum cleaner 10 is used, fine dust of the second particle size or more, out of the dust moving together with the suction air passing through the first dust separating and collecting unit 30, is collected by the second filter 38a by the suction air generated by the first electric blower 24. The collected fine dust falls off from the second filter 38a due to its own weight when the suction wind is stopped, and the collected fine dust is accumulated in the fine dust collecting chamber 41 of the fine dust collecting unit 40. Further, the fine dust that has not fallen off from the second filter 38a is peeled off from the second filter 38a by the air-moving flow (air flow due to the negative pressure) generated when the electric vacuum cleaner 10 is connected to the station 12 and the operation of transferring the dust accumulated in the cleaner body 14 to the station 12 side is performed. Then, the peeled fine dust is transferred to the station main body section 20 via the fine dust collecting section 40. In addition, the shape of the second filter 38a may be appropriately selected from a conical shape, a cylindrical shape, a prismatic shape, a pyramid shape, and the like, in addition to the truncated conical shape shown in fig. 2.

In the mounted posture of the electric vacuum cleaner 10 having the above-described configuration, the first dust separating and collecting unit 30 and the second dust separating and collecting unit 32 are located above the suction pipe 15, the first electric blower 24 is located above the first dust separating and collecting unit 30 and the second dust separating and collecting unit 32, and the fine dust separating unit 38 is located above the coarse dust separating unit 34. In the mounted posture of the electric vacuum cleaner 10, the suction pipe 15, the first and second dust separation/collection units 30 and 32, and the first electric blower 24 are arranged in the vertical direction, and the coarse dust separation unit 34 and the fine dust separation unit 38 are arranged in the vertical direction.

Next, the station 12 will be described. As shown in fig. 1 and 3, the station 12 is constituted by a column portion 18 in which a communication pipe portion 42 extending in the direction of arrow X1-X2 is formed, and a box-shaped station main body portion 20 formed below the column portion 18 (in the direction of arrow X2).

The station main body 20 includes a second electric blower 44 and a collection dust collector 46 therein. When the electric vacuum cleaner 10 is connected to the station 12, the second electric blower 44 is driven for a predetermined period of time, and generates an air flow (transfer air) in the communication pipe portion 42 through the collection dust collecting portion 46, which generates a transfer force due to a negative pressure. The air-moving flow passes from the communicating pipe portion 42 toward the collection dust portion 46. As a result, the dust accumulated in the electric vacuum cleaner 10 connected to the station 12 (the pillar portion 18) can be transferred to the collection dust collection portion 46. Specifically, the second electric blower 44 applies negative pressure to the first and second separate dust collectors 30 and 32 via the collection dust collector 46, and moves coarse dust collected in the first separate dust collector 30 and fine dust collected in the second separate dust collector 32 to the collection dust collector 46.

The collection dust collection unit 46 is provided with a paper bag, for example, and can store dust transferred from the electric cleaner 10 side. That is, the recovery dust collection unit 46 can receive coarse dust collected in the first separation dust collection unit 30 and fine dust collected in the second separation dust collection unit 32. Then, in the stage where a predetermined amount of dust is accumulated in the paper bundle, the paper bundle can be taken out from the collection dust collecting unit 46 together with the paper bundle and discarded. The dust collection unit 46 may be configured to directly collect dust without using a paper pack.

< Detailed Structure of Main body separation dust collector 28 >

Next, the structure of the main body separation dust collection unit 28 in the electric vacuum cleaner 10 will be described in detail. Fig. 4 is an exemplary and schematic perspective view showing a state in which the waste port (coarse dust waste port and fine dust waste port) of the electric vacuum cleaner according to the embodiment is closed by the cover that performs the closing operation. Fig. 5 is an exemplary and schematic perspective view showing a state in which the waste port (coarse dust waste port and fine dust waste port) of the electric vacuum cleaner according to the embodiment is opened by the cover body which has been opened.

As shown in fig. 4 and 5, the main body separation dust collection unit 28 includes a housing 29 and a sealing member 31. The housing 29 houses the coarse dust separating unit 34 and the fine dust separating unit 38 therein. The housing 29 constitutes a coarse dust collecting part 36 and a fine dust collecting part 40. The seal member 31 is housed in the case 29. The main body separated dust collecting part 28 constitutes a part of the cleaner main body 14, and is detachable from other parts of the cleaner main body 14. The other part of the cleaner body 14 is a part including the grip 11, the battery 22, and the first electric blower 24, and constitutes the base portion 14b.

The housing 29 includes a lower wall 29a, an upper wall 29b, a side wall 29c, and a partition wall 29d. The housing 29 is made of, for example, a synthetic resin material. The material of the case 29 is not limited to the above.

The lower wall 29a extends in a direction intersecting the up-down direction. The lower wall 29a is provided with a vent hole 29e. The lower wall 29a is provided with an opening/closing valve 29f for opening/closing (opening/closing) the vent hole 29e. The vent hole 29e communicates with the suction pipe 15 and the coarse dust collecting chamber 37 in a state where it is opened by the opening/closing valve 29f (fig. 5). That is, the suction pipe 15 and the coarse dust collecting chamber 37 communicate via the vent hole 29e.

The upper wall 29b is located above the lower wall 29a with a gap therebetween, and extends in a direction intersecting the vertical direction. The upper wall 29b is provided with a vent hole 29g. The vent 29g communicates with the space inside the second filter 38a of the fine dust separation unit 38 and the suction port of the first electric blower 24. That is, the space inside the second filter 38a of the fine dust separating unit 38 communicates with the suction port of the first electric blower 24 via the vent hole 29g.

The side wall 29c extends in the up-down direction over the outer peripheral edge portion of the lower wall 29a and the outer peripheral edge portion of the upper wall 29 b. The side wall 29c is cylindrical, at least a part of which extends in the up-down direction. The side wall 29c may have a shape extending in the vertical direction as a whole, or a step may be provided in the side wall 29c, and the side wall 29c may have a shape in which only a part thereof extends in the vertical direction.

The partition wall 29d is connected to the side wall 29c in the cylinder of the side wall 29c, and divides the interior of the housing 29 into upper and lower areas. Specifically, the partition wall 29d separates the coarse dust collecting chamber 37 from the fine dust collecting chamber 41. In other words, the partition wall 29d separates the coarse dust collecting chamber 37 from the fine dust collecting chamber 41. A coarse dust separator 34 is disposed on the upper surface of the partition 29 d. The partition wall 29d is provided with a vent hole 29h that opens a space inside the coarse dust separating unit 34 downward. The partition 29d is also called a partition.

The housing 29 includes a coarse dust housing portion 29i and a fine dust housing portion 29j. The coarse dust housing portion 29i is included in the coarse dust collecting portion 36. The fine dust housing portion 29j is included in the fine dust collecting portion 40.

The coarse dust housing portion 29i is constituted by the lower wall 29a, the partition wall 29d, and a portion 29ca between the lower wall 29a and the partition wall 29d in the side wall 29 c. A part of the coarse dust collecting chamber 37 is provided in the coarse dust housing 29 i. The coarse dust collecting chamber 37 is a space that extends over the inside of the coarse dust housing portion 29i and the inside of the coarse dust separating portion 34. That is, the coarse dust collecting chamber 37 is surrounded by the inner surface of the coarse dust housing portion 29i and the inner surface of the coarse dust separating portion 34. In other words, the coarse dust housing portion 29i and the coarse dust separating portion 34 form a coarse dust collecting chamber 37.

The dust housing portion 29j is constituted by the upper wall 29b, the partition wall 29d, and a portion 29cb between the upper wall 29b and the partition wall 29d in the side wall 29 c. A fine dust collecting chamber 41 is provided inside the fine dust housing portion 29 j. The fine dust collecting chamber 41 is surrounded by the inner surface of the fine dust housing portion 29j, the outer surface of the fine dust separating portion 38, and the outer surface of the coarse dust separating portion 34. In other words, the fine dust housing portion 29j forms the coarse dust collecting chamber 37 together with the fine dust separating portion 38 and the coarse dust separating portion 34.

The fine dust collecting chamber 41 has a first portion 41a and a second portion 41b. The first portion 41a is a portion between the inner surface of the fine dust housing portion 29j and the outer surface of the fine dust separating portion 38, and surrounds the outer peripheral portion 38b of the fine dust separating portion 38 (the second filter 38 a). The second portion 41b is a portion between the inner surface of the fine dust housing part 29j and the outer surface of the coarse dust separating part 34. That is, the second portion 41b surrounds the coarse dust separating portion 34. The second portion 41b is located on the lower side with respect to the first portion 41a in the mounting posture and is connected to the first portion 41 a. The second portion 41b is located below the fine dust separating portion 38. That is, at least a part (as an example, a part) of the fine dust collecting chamber 41 is located below the fine dust separating section 38.

Fig. 6 is an exemplary and schematic partial cross-sectional view showing a positional relationship between a fine dust disposal port and a fine dust collecting part of the electric vacuum cleaner of the embodiment.

As shown in fig. 4 to 6, the seal member 31 is interposed between the upper surface 29da of the partition wall 29d and the lower end portion of the coarse dust separating portion 34. The seal member 31 is formed in an annular shape and is attached to the outer peripheral portion of the lower end portion of the coarse dust separating portion 34. The seal member 31 is made of an elastic member such as rubber, for example, and has elasticity. The sealing member 31 seals between the partition 29d and the coarse dust separator 34.

As shown in fig. 6, the seal member 31 has a joint 31a and a leg 31b. The coupling portion 31a is fitted to the lower end portion of the coarse dust separating portion 34. The leg 31b extends obliquely downward from the joint 31a toward the inner surface of the side wall 29c, and contacts the upper surface 29da of the partition 29 d. The leg 31b is pressed against the upper surface 29da of the partition 29d, for example, and is elastically deformed. The upper surface 31c of the sealing member 31 carries fine dust in the fine dust collecting chamber 41. The upper surface 31c is an example of a surface.

Fig. 7 is an exemplary and schematic perspective view showing a state in which the cover of the electric vacuum cleaner according to the embodiment is removed to expose the waste port (coarse dust waste port and fine dust waste port).

As shown in fig. 4, 5 and 7, the main body separation dust collection unit 28 is provided with a waste port 48. The discard port 48 is provided in the side wall 29c of the housing 29. As an example, the waste port 48 is provided in a portion of the side wall 29c extending in the up-down direction. Coarse dust collected in the first separation dust collecting part 30 and fine dust collected in the second separation dust collecting part 32 can pass through the discarding port 48. In detail, the discarding port 48 includes a coarse dust discarding port 50 and a fine dust discarding port 52. The coarse dust discarding port 50 and the fine dust discarding port 52 are provided independently of each other. The coarse dust discarding port 50 and the fine dust discarding port 52 are provided at a distance from each other in the vertical direction (the direction of arrow X1-X2). The coarse dust discarding port 50 is located on the lower side (arrow X2 side) with respect to the fine dust discarding port 52. In other words, the fine dust discarding opening 52 is located on the upper side (arrow X1 side) with respect to the coarse dust discarding opening 50.

The coarse dust discarding port 50 is provided in a side wall 29c of the coarse dust housing portion 29i, and communicates with the coarse dust collecting chamber 37 of the first dust separating and collecting portion 30. Coarse dust collected in the first dust separating and collecting part 30 can pass through the coarse dust discarding port 50. The fine dust discarding port 52 is located below the fine dust separating part 38.

The fine dust discarding port 52 is provided in the side wall 29c of the fine dust housing portion 29j and communicates with the second portion 41b of the fine dust collecting chamber 41 of the fine dust collecting portion 40. The fine dust collected in the second dust separating and collecting part 32 can pass through the fine dust discarding port 52. The fine dust discarding opening 52 has an opening area smaller than that of the coarse dust discarding opening 50. In other words, the opening area of the coarse dust discarding opening 50 is larger than the opening area of the fine dust discarding opening 52. As shown in fig. 4 and 5, the fine dust discarding port 52 communicates with the suction pipe 15 via the fine dust collecting chamber 41 of the second dust separating collecting part 32 and the first dust separating collecting part 30. As shown in fig. 6, the lower end 52a (lower side) of the fine dust disposal port 52 is positioned below the upper surface 31c of the sealing member 31 (in the direction of arrow X2) in the mounted posture. In other words, the upper surface 31c of the sealing member 31 is located above the lower end 52a of the fine dust disposal port 52 (in the direction of arrow X1) in the mounted posture. As an example, the upper surface 31c of the sealing member 31 is located above the lower end 52a of the fine dust disposal port 52 and below the upper end 52b (upper side) of the fine dust disposal port 52. With the above configuration, the transfer air can be effectively blown onto the fine dust on the upper surface 31c of the sealing member 31, and the fine dust can be easily moved to the fine dust disposal opening 52.

Fig. 8 is an exemplary and schematic perspective view showing a state in which the waste port (coarse dust waste port and fine dust waste port) of the electric vacuum cleaner according to the embodiment is closed by the cover.

As shown in fig. 4, 5 and 8, the waste port 48 (coarse dust waste port 50, fine dust waste port 52) is opened and closed (opened/closed) by a cover 54. The waste port 48 (coarse dust waste port 50, fine dust waste port 52) communicates with the dust inlet 45 of the station 12 in a state where it is opened by the cover 54.

The air flow in the case where the opening/closing valve 29f is opened by the suction force of the first electric blower 24 in the main body separation dust collection unit 28 having the above-described configuration will be described in detail. The air flows from the suction pipe 15 into the coarse dust collecting chamber 37 through the vent hole 29e of the lower wall 29a, and enters the inner side of the coarse dust separating portion 34 through the vent hole 29h of the partition wall 29 d. Then, the air passes through the coarse dust separating part 34 from inside to outside and enters the second portion 41b of the fine dust collecting chamber 41. At this time, coarse dust in the air is separated by the coarse dust separating unit 34. After that, the air flows from the second portion 41b to the first portion 41a of the fine dust collecting chamber 41, and flows from the outside to the inside to the second portion 41b of the fine dust collecting chamber 41 through the fine dust separating portion 38. Then, the air passes through the fine dust separating part 38 from the outside to the inside, and fine dust in the air is separated by the fine dust separating part 38. After that, the air enters the suction port of the first electric blower 24 from the ventilation hole 29g of the upper wall 29 b. As described above, the coarse dust separated by the coarse dust separating unit 34 and the fine dust separated by the fine dust separating unit 38 are accumulated (collected) in the coarse dust collecting chamber 37 and the fine dust collecting chamber 41 by their own weights at the time of stopping the suction air or the like. At this time, the coarse dust captured by the coarse dust separating unit 34 and the fine dust captured by the fine dust separating unit 38 may remain captured without falling off from the coarse dust separating unit 34 and the fine dust separating unit 38. That is, the coarse dust separating unit 34 can separate and collect coarse dust, and the fine dust separating unit 38 can separate and collect fine dust. Accordingly, it can be defined that the coarse dust separating portion 34 and the fine dust separating portion 38 are included in the coarse dust collecting portion 36 and the fine dust collecting portion 40, respectively.

Next, with reference to fig. 7 and 8, details of a structure in which dust is held in the main body separation dust collection unit 28 and the accumulated dust can be discharged will be described.

In the case of using the electric vacuum cleaner 10, that is, in a state of being separated from the station 12, it is necessary to keep dust (coarse dust and fine dust) accumulated (collected) in the main body separation dust collecting portion 28 from being spilled outside from the main body separation dust collecting portion 28. On the other hand, in a state where the electric vacuum cleaner 10 is connected to the station 12, the main body separation dust collection unit 28 needs to be opened to the communication pipe 42 side in order to transfer dust from the main body separation dust collection unit 28 to the station 12 (the collection dust collection unit 46).

Accordingly, a coarse dust disposal port 50 for discharging coarse dust is formed as the disposal port 48 for discharging dust in a part of the side wall 29c of the coarse dust collecting portion 36 forming the main body separation dust collecting portion 28. Similarly, a fine dust disposal port 52 for discharging fine dust is formed as the disposal port 48 in a part of the side wall 29c of the cleaner body 14 forming the fine dust collecting part 40.

As shown in fig. 7, the coarse dust discarding port 50 and the fine dust discarding port 52 of the present embodiment are formed independently and in adjacent positions. As shown in fig. 1, the positional relationship between the coarse dust discarding opening 50 and the fine dust discarding opening 52 is set such that the fine dust discarding opening 52 is positioned above the coarse dust discarding opening 50 when the suction port body 16 is positioned below and the cleaner body 14 (extension pipe 17) is connected to the station 12 in the mounting posture (standing posture). That is, the coarse dust discarding port 50 and the fine dust discarding port 52 are disposed on a side (arrow X2 side) close to the suction port body 16 along the axial direction of the cleaner body 14, and the fine dust discarding port 52 is disposed above (arrow X1 side) the coarse dust discarding port 50. As described above, in the present embodiment, the opening area of the coarse dust discarding port 50 is set larger than the opening area of the fine dust discarding port 52. As a result, when coarse dust and fine dust accumulated in the coarse dust collecting part 36 and the fine dust collecting part 40, respectively, are discharged, coarse dust having a shape larger than that of fine dust can be smoothly discharged. Further, by reducing the opening area of the fine dust discarding opening 52 to be smaller than the opening area of the coarse dust discarding opening 50, the air velocity of the air passing through the fine dust discarding opening 52 can be increased, and the fine dust (dust finer than the coarse dust or lighter weight) can be effectively discharged from the fine dust discarding opening 52 with the air flow having a high air velocity. In the present embodiment, the openings of the coarse dust discarding port 50 and the fine dust discarding port 52 are rectangular, but may be circular, elliptical, or the like, in addition to rectangular.

The electric vacuum cleaner 10 further includes a cover 54 that can be opened and closed, and the cover 54 closes the coarse dust discarding opening 50 and the fine dust discarding opening 52 so that dust accumulated (collected) in the main body separation dust collecting portion 28 (the coarse dust collecting chamber 37 and the fine dust collecting chamber 41) does not spill out of the electric vacuum cleaner 10 when the electric vacuum cleaner 10 is detached from the station 12.

Fig. 8 is an exemplary and schematic perspective view showing a state in which the waste port 48 (coarse dust waste port 50 and fine dust waste port 52) of the electric vacuum cleaner 10 is closed by the cover 54. In the case of the present embodiment, the lid body 54 is constituted by a plate-like lid main body 56, and a rotation fulcrum portion 58 that is a rotation center when the lid main body 56 performs an opening and closing operation. Fig. 8 shows a state in which the single cover body 54 (cover main body 56) closes the coarse dust disposal opening 50 and the fine dust disposal opening 52 with the rotation fulcrum portion 58 as a center. In the case of fig. 8, a rotation shaft is formed on the lid 54 side, and the rotation shaft is inserted into a support hole formed in a part of the side wall 29c of the housing 29 of the main body separation dust collection unit 28, thereby forming a rotation fulcrum portion 58. In other embodiments, a support hole may be formed in the cover 54 side, and a rotation shaft formed in a part of the side wall 29c of the housing 29 of the main body separation dust collection unit 28 may be inserted into the support hole to form the rotation fulcrum portion 58.

The detailed structure and opening and closing operations of the lid 54 will be described with reference to fig. 4 and 5.

As described above, the lid body 54 is constituted by the plate-shaped lid main body 56 and the rotation fulcrum portion 58 that is the rotation center when the lid main body 56 performs the opening and closing operation. In the cover main body 56, sealing members such as resin packing may be disposed around the sealing portions 54a that seal the waste ports 48 (the coarse dust waste ports 50 and the fine dust waste ports 52) on the surfaces that come into contact with the coarse dust waste ports 50 and the fine dust waste ports 52, respectively, and the adhesion during the closing operation of the cover body 54 may be improved so as not to spill dust outside.

As shown in fig. 4 and 5, the rotation fulcrum portion 58 is disposed at a position adjacent to the fine dust discarding opening 52 on a side distant from the coarse dust discarding opening 50 with respect to the coarse dust discarding opening 50 and the fine dust discarding opening 52 which are disposed adjacently, and supports the cover main body 56 (cover body 54) so that the coarse dust discarding opening 50 and the fine dust discarding opening 52 can be simultaneously opened or closed by the cover main body 56. A biasing member 58a (e.g., a torsion spring) that biases the cover main body 56 to perform a closing operation (closing the coarse dust disposal opening 50 and the fine dust disposal opening 52) is disposed in the vicinity of the rotation fulcrum portion 58, for example, in the cover main body 56. Therefore, when the vacuum cleaner 10 is not connected to the station 12, that is, when the vacuum cleaner 10 is in a usable state, the lid 54 (the lid main body 56) can be kept in a closed state (a state in which the coarse dust discarding port 50 and the fine dust discarding port 52 are closed) by the urging force of the urging member 58 a.

The lid 54 is provided with a receiving portion 60 for improving the maintenance performance of the closing posture of the lid 54 at the other end side of the lid 54 than the rotation fulcrum portion 58, for example, at the edge portion at the other end side of the lid 54. A first magnetic body 62 such as iron or a permanent magnet is incorporated in the receiving portion 60. The position of the receiving portion 60 provided at the edge portion on the other end side of the cover 54 is not limited to the end portion of the cover 54, and may be near (around) the end portion. For example, the receiving portion 60 may be formed on the opposite side of the lid body 54 with respect to the rotation fulcrum portion 58 via a closing portion 54a closing the disposal port 48.

Further, in a part of the cleaner body 14, a holding portion 64 is formed at a position facing the receiving portion 60 through the partition wall 14c when the lid 54 is closed. The holding portion 64 also incorporates a second magnetic body 66 that applies an attracting force to the first magnetic body 62. The second magnetic body 66 is, for example, a permanent magnet. The holding portion 64 includes a substantially L-shaped rod portion 64a extending from a side where the second magnetic body 66 is incorporated. A rotation fulcrum portion 64b is formed in a part of the lever portion 64a, and the holding portion 64 is rotatable about the rotation fulcrum portion 64 b. The holding portion 64 is biased by a biasing member 64c (e.g., a torsion spring) to rotate to an opposing posture opposing the receiving portion 60 shown in fig. 4. That is, in a state in which the vacuum cleaner 10 is separated from the station 12, the holding portion 64 having the second magnetic body 66 is attached to the receiving portion 60 having the first magnetic body 62 via the partition wall 14c, and the closed state by the closing operation of the cover 54 is maintained. As a result, during the closing operation of the cover 54, the cover 54 is pressed against the coarse dust disposal opening 50 and the fine dust disposal opening 52 by the biasing action of the biasing member 58a provided on the rotation fulcrum portion 58 side and the suction force of the receiving portion 60 (the first magnetic body 62) and the holding portion 64 (the second magnetic body 66), and the cover 54 firmly closes the coarse dust disposal opening 50 and the fine dust disposal opening 52 at the same time. Therefore, in a state where the electric vacuum cleaner 10 is separated from the station 12, dust accumulated (collected) in the main body separation dust collection portion 28 (coarse dust collection chamber 37 and fine dust collection chamber 41) can be stably prevented from being spilled outside the electric vacuum cleaner 10.

In the present embodiment, the fine dust discarding port 52 is located above the coarse dust discarding port 50, and the rotation fulcrum portion 58 is located above the fine dust discarding port 52. As a result, even if the dust is present on the outer periphery of the cover 54, the dust is easily caught between the rotation fulcrum portion 58, the cover 54, and the cleaner body 14, and the rotation operation is prevented from being defective or the sealing is prevented from being incomplete. For example, even if fine dust is spilled during the transportation of the dust, the dust is less likely to adhere to the rotation fulcrum portion 8 of the cover 54, and a rotation failure is less likely to occur. Further, as shown in fig. 5, since the weight such as the first magnetic body 62 is separated from the rotation fulcrum portion 58, the rotation operation of the lid 54 at the time of the closing operation is easy. Further, when the supply of the transfer wind is stopped, the cover 54 is easily closed by its own weight, and the suction operation of the first magnetic body 62 and the second magnetic body 66 can be smoothly performed.

In the case of fig. 4 and 5, a rotation shaft is formed on the holding portion 64 side, and the rotation shaft is inserted into a support hole formed in a part of the side wall 29c of the housing 29 of the main body separation dust collecting portion 28, thereby forming a rotation fulcrum portion 64b. In other embodiments, a support hole may be formed in the holding portion 64 side, and a rotation shaft formed in a part of the side wall 29c of the housing 29 of the main body separation dust collecting portion 28 may be inserted into the support hole to form the rotation fulcrum portion 64b.

Further, by the structure in which the second magnetic material 66 is incorporated in the holding portion 64 through the partition wall 14c, even when metal dust or the like is adsorbed to the partition wall 14c and the holding portion 64, it is possible to easily remove (clean). As a result, the holding portion 64 can stably adsorb the lid 54 (the receiving portion 60), and a closing operation failure (a closing failure) of the lid 54 can be easily suppressed.

In the case of fig. 4, the receiving portion 60 is formed at an edge portion at the other end side, for example, the farthest end side from the side where the rotation fulcrum portion 58 is formed, and the holding portion 64 is formed at a position corresponding to the receiving portion 60. As a result, the lid main body 56 can be biased at both end positions, and the biasing force can be effectively applied to the lid main body 56, so that a stable closing operation posture can be maintained. In other embodiments, the receiving portion 60 may be located on the other end side of the side where the rotation fulcrum portion 58 is formed, and the holding portion 64 may be formed at a position corresponding to the receiving portion 60. In this case, the lid main body 56 can be biased at two places, and the closing posture of the lid 54 can be maintained.

When the vacuum cleaner 10 and the station 12 are coupled in a state in which the cover 54 is closed as shown in fig. 4, the dust inlet 45 opened in a part (for example, an upper part) of the pillar portion 18 of the station 12 faces the cover 54 as shown in fig. 5. At this time, the first protrusion 68 formed on a part of the pillar portion 18 contacts the lever portion 64a, and rotates the holding portion 64 clockwise in fig. 5. As a result, the holding portion 64 moves (rotates) to the retracted position Q (see fig. 5) away from the opposing position P (see fig. 4) of the receiving portion 60 in conjunction with the connection operation for connecting the electric cleaner 10 to the station 12. By moving (rotating) the holding portion 64 toward the retracted position Q, the attraction force to the first magnetic body 62 of the receiving portion 60 is reduced, and the opening operation of the lid 54 can be easily performed. In other words, the opening operation of the cover 54 can be allowed. That is, in a state where the electric vacuum cleaner 10 is coupled to the station 12, the suction force of the cover 54 is reduced to easily open the cover 54, and the collected dust can be smoothly moved to the station 12. Further, by forming the structure in which the holding portion 64 moves to the retracted position Q, a structure such as a locking claw mechanically locking the receiving portion 60 is not required. As a result, the opening and closing failure of the cover 54 due to the pinching of dust and the like, which may occur when the structure of the locking claw and the like is adopted, is easily suppressed.

When the vacuum cleaner 10 is separated from the station 12, the engagement between the first projection 68 and the lever 64a is released, and the holding portion 64 is returned to the facing position P by the urging force of the urging member 64 c. Further, since the supply of the transfer air (negative pressure) from the station 12 side is stopped, the lid 54 is closed by the urging force of the urging member 58 a. As a result, the first magnetic body 62 of the receiving portion 60 and the second magnetic body 66 of the holding portion 64 are attracted to each other, and the closing operation posture (the closing posture of the lid main body 56 to the coarse dust disposal port 50 and the fine dust disposal port 52) is restored.

As described above, when the electric vacuum cleaner 10 is connected to the station 12, the second electric blower 44 of the station 12 is driven for a predetermined period, and an air flow (transfer wind) is generated in the communication pipe portion 42 through the collection dust collecting portion 46, which accompanies the transfer force due to the negative pressure. As described above, the cover 54 of the vacuum cleaner 10 is easily opened when connected. As a result, the dust collection unit 28, the suction pipe 15 (see fig. 2), and the like are separated from the main body of the connected electric vacuum cleaner 10, and air is introduced. The air flow promotes the opening operation of the lid 54, thereby realizing the opening operation state shown in fig. 5. That is, the dust inlet 45 is connected to the waste port 48 (the coarse dust waste port 50 and the fine dust waste port 52) opened by the lid 54 which is opened.

The communication pipe portion 42 having the dust inlet 45 at the upper side has a substantially linear flow path, and communicates with the collection dust collection portion 46 of the station main body 20 located below the communication pipe portion 42. Thus, the dust (fine dust and coarse dust) discharged through the waste port 48 (coarse dust waste port 50 and fine dust waste port 52) and the dust introduction port 45 can be smoothly moved to the collection dust collection portion 46 and collected.

When the transfer air flows from the station 12 side, for example, the air flow from the suction pipe 15 side opens the opening/closing valve 29f to generate an air flow W1 (transfer air). As a result, the coarse dust accumulated in the coarse dust collecting portion 36 (coarse dust collecting chamber 37) is discharged from the coarse dust discarding port 50 opened by the opening operation of the lid 54, and transferred to the communicating pipe portion 42. That is, the coarse dust can be moved to the recovery dust collection unit 46. At this time, an air flow W3 is also generated from the suction pipe 15 through the coarse dust collecting part 36 (coarse dust collecting chamber 37) and the coarse dust separating part 34 toward the fine dust discarding port 52 through the fine dust collecting part 40 (second part 41b of the fine dust collecting chamber 41). By the air flow W3, the fine dust in the fine dust collecting part 40 (fine dust collecting chamber 41) is transferred to the recovery dust collecting part 46.

Similarly, when the transfer air flows from the station 12 side, the air flow W2 (transfer air) is generated by the air flow from the main body separation dust collection unit 28 side. As a result, the fine dust accumulated in the fine dust collecting portion 40 (fine dust collecting chamber 41) is discharged from the fine dust discarding port 52 opened by the opening operation of the lid 54, and transferred to the communicating pipe portion 42. That is, the fine dust can be moved to the recovery dust collection unit 46. Although described later, the airflow W2 includes an airflow passing through the inlet 74 of the cleaner body 14 and an airflow passing through the first electric blower 24. The inlet 74 introduces air between the second dust separation collecting unit 32 and the first electric blower 24.

However, since the coarse dust has a large shape (for example, a large particle size), the coarse dust is easily affected by the air-moving air, and can be easily transported. On the other hand, fine dust is smaller in shape (for example, smaller in particle size) than coarse dust, so that the influence of the air-moving flow is small (only around the fine dust), and the air-moving efficiency is sometimes inferior to that of coarse dust. Accordingly, fine dust may remain in the fine dust collecting chamber 41.

In the case of the cleaner body 14 of the present embodiment, as described above, the rotation fulcrum portion 58 of the cover 54 is disposed at a position adjacent to the fine dust disposal opening 52 on a side away from the coarse dust disposal opening 50 with respect to the coarse dust disposal opening 50 and the fine dust disposal opening 52 which are disposed adjacently. As a result, when the cover 54 is opened, the open area (space) M formed by the lid 54 and the fine dust disposal opening 52 on the side close to the rotation fulcrum 58 is smaller (space is reduced) than the open area (space) N formed by the lid 54 and the coarse dust disposal opening 50 on the side away from the rotation fulcrum 58. As a result, the flow rate of the air flow W2 flowing through the fine dust discarding opening 52 in the open area M is faster than the flow rate of the air flow W1 flowing through the coarse dust discarding opening 50 in the open area N.

As described above, the fine dust collecting chamber 41 of the second dust separating and collecting part 32 includes the upper surface 31c on which fine dust is placed, and the upper surface 31c is located above the lower end of the fine dust disposal opening 52 in a state where the electric vacuum cleaner 10 is coupled to the station 12 in the mounted posture (standing posture). As a result, even with the air flow W2 having a flow velocity increased in the open area (space) M reduced by the cover 54, the fine dust placed (remaining) on the upper surface 31c can be efficiently transferred. That is, the fine dust transfer efficiency can be improved, and the fine dust can be transferred effectively as in the coarse dust.

In addition, when the electric vacuum cleaner 10 is connected to the station 12, the first electric blower 24 of the electric vacuum cleaner 10 is stopped. As a result, the air passage resistance increases, and the amount of air flowing from the outside through the inside and the periphery of the first electric blower 24 decreases. Therefore, as shown in fig. 5, the cleaner body 14 includes an intake valve portion 70 that opens when the electric cleaner 10 is connected to the station 12. The intake valve portion 70 is a substantially L-shaped member, and includes a stem portion 70a. A rotation fulcrum portion 70b is formed in a part of the lever portion 70a, and the intake valve portion 70 is rotatable about the rotation fulcrum portion 70 b. A biasing member 70c (e.g., a torsion spring) that generates a biasing force to maintain the closed state is attached to the intake valve portion 70. When the vacuum cleaner 10 is coupled to the station 12, the lever portion 70a of the intake valve portion 70 engages with the second protrusion 72 (pushed up in the clockwise direction in the case of fig. 5) formed in a part of the pillar portion 18 of the station 12, and performs an opening operation against the biasing force of the biasing member 70c, as shown in fig. 5. As a result, the intake valve portion 70 is formed in a part of the cleaner body 14, and opens the inlet 74 for introducing air between the second dust separation and collection portion 32 and the first electric blower 24. As a result, the inlet 74 communicates with the external air intake port 18a formed in a part of the pillar portion 18, and the external air (air) flows into the second dust separation portion 32 as the air flow W2 (transfer air), thereby contributing to the transfer of the fine dust. That is, the air volume is increased by easily taking in the outside air, which contributes to an improvement in the transporting force of dust, particularly fine dust, and enables efficient transporting of fine dust as in the case of coarse dust.

In the case of fig. 4 and 5, a rotation shaft is formed on the intake valve portion 70 side, and the rotation shaft is inserted into a support hole formed in a part of the side wall 29c of the housing 29 of the main body dust collection portion 28, thereby forming a rotation fulcrum portion 70b. In other embodiments, a support hole may be formed in the intake valve portion 70 side, and a rotation shaft formed in a part of the side wall 29c of the housing 29 of the main body dust collection portion 28 may be inserted into the support hole to form the rotation fulcrum portion 70b.

When the vacuum cleaner 10 is separated from the station 12 and the engagement between the lever portion 70a and the second protrusion portion 72 is released, the intake valve portion 70 is closed by the urging force of the urging member 70 c. As a result, the introduction port 74 is closed. Thus, the suction force generated by the first electric blower 24 can be prevented from being reduced when the electric vacuum cleaner 10 is used.

As described above, according to the electric dust collector 1 of the present embodiment, when the electric dust collector 10 is connected to the station 12, the dust accumulated (collected) in the main body separation dust collecting portion 28 can be efficiently transferred to the collection dust collecting portion 46 of the station 12 by the airflows W1, W2, W3 (transfer wind) generated at the time of the opening operation of the cover 54. When the vacuum cleaner 10 is separated from the station 12, the waste port 48 (the coarse dust waste port 50 and the fine dust waste port 52) can be reliably closed by the closing operation of the cover 54 and the suction operation of the receiving portion 60 and the holding portion 64. As a result, dust accumulated (collected) by the electric vacuum cleaner 10 can be suppressed (prevented) from being scattered from the main body separation dust collection portion 28.

In the example described in fig. 4 and 5, the second magnetic body 66 included in the holding portion 64 is a permanent magnet, but the present invention is not limited thereto. In other embodiments, the second magnetic body 66 may be configured by an electromagnet 66E. In this case, when the vacuum cleaner 10 is detached from the station 12 (when the vacuum cleaner 10 can be used), the electromagnet 66E receives power supply from the battery 22, and generates magnetic force by electromagnetic induction. As a result, the holding portion 64 (electromagnet 66E) adsorbs the first magnetic body 62 of the receiving portion 60 of the lid 54 via the partition wall 14c, and the lid 54 reliably closes the waste port 48 (coarse dust waste port 50 and fine dust waste port 52). When it is detected that the vacuum cleaner 10 is connected to the station 12, for example, when it is detected that a contact capable of charging the battery 22 is connected, the supply of electric power to the electromagnet 66E is cut off, and electromagnetic induction is stopped. As a result, the holding portion 64 (electromagnet 66E) is released from the attraction of the first magnetic body 62 of the receiving portion 60 of the cover 54. As a result, the lid 54 is biased only by the biasing member 58a, and the lid 54 is easily opened (opening operation of the lid 54 is allowed). In addition, in the case where the second magnetic body 66 is an electromagnet, by cutting off the power supply to the electromagnet 66E, even when metal dust or the like is adsorbed to the holding portion 64, it is possible to easily remove (clean). As a result, the holding portion 64 can stably adsorb the lid 54 (the receiving portion 60), and a closing operation failure (a closing failure) of the lid 54 can be easily suppressed.

In addition, when the second magnetic body 66 is configured by the electromagnet 66E, the holding portion 64 may be configured to move toward the retracted position Q, but by stopping the supply of electric power to the electromagnet 66E, the attraction force to the first magnetic body 62 can be reduced or eliminated. Therefore, in the case where the second magnetic body 66 is constituted by the electromagnet 66E, the movable mechanism (the moving mechanism to the retracted position Q) of the holding portion 64 may be omitted and fixed at the opposing position P shown in fig. 4. In this case, the first projection 68 on the post 18 side can be omitted. As a result, the structure of the cleaner body 14 and the structure of the stay portion 18 can be simplified, and improvement in design, simplification of design, and the like can be facilitated.

< Generalization >

As described above, according to the electric vacuum cleaner 1 of the present embodiment, the lid 54 can be reliably maintained in the closed operation posture with respect to the main body separation dust collection unit 28 (coarse dust collection chamber 37 and fine dust collection chamber 41) in the state where the electric vacuum cleaner 10 is separated from the station 12, and dust accumulated (collected) in the main body separation dust collection unit 28 (coarse dust collection chamber 37 and fine dust collection chamber 41) can be stably prevented from being spilled outside the electric vacuum cleaner 10. Further, when the electric vacuum cleaner 10 is connected to the station 12, the lid 54 can be easily opened, and the dust accumulated (collected) in the main body separation dust collection unit 28 (coarse dust collection chamber 37 and fine dust collection chamber 41) can be smoothly transferred to the station 12 side.

The electric vacuum cleaner 1 of the above-described embodiment includes the station 12 and the electric vacuum cleaner 10 that can be connected to and disconnected from the station 12. The electric vacuum cleaner 10 includes a cleaner main body 14, the cleaner main body 14 having a first electric blower 24 for generating an attractive force for attracting dust, a main body separation dust collection unit 28, a cover 54 for opening and closing a waste port 48 provided in the main body separation dust collection unit 28, a holding unit 64 capable of holding the cover 54 in a closed state, and a suction pipe 15 having an attractive port 15a for sucking air by the attractive force of the first electric blower 24. The main body separation dust collection unit 28 includes a separation unit that separates dust from air containing the dust, and a dust collection chamber (coarse dust collection chamber 37 and fine dust collection chamber 41) that accumulates the dust separated by the separation unit, and has a disposal port 48 in a part thereof that can discharge the accumulated dust. The cover 54 includes a cover main body 56, a rotation fulcrum portion 58 provided on one end side of the cover main body 56, and a receiving portion 60 including a first magnetic body 62 provided on the other end side of the rotation fulcrum portion 58 in the cover main body 54. The holding portion 64 has a second magnetic body 66 that can be attracted to the first magnetic body 62 at a position facing the receiving portion 60 when the lid 54 is closed, and applies an attraction force to the first magnetic body 62 in a state in which the vacuum cleaner 10 is separated from the station 12, maintains a closed state by the closing operation of the lid 54, and reduces the attraction force to the first magnetic body 62 in a state in which the vacuum cleaner 10 is coupled to the station 12, allowing the opening operation of the lid 54. The station 12 includes a dust inlet 45 connected to the waste port 48 when the electric vacuum cleaner 10 is connected, a collection dust collecting unit 46 connected to the dust inlet 45 and capable of receiving dust collected in the main body separation dust collecting unit 28, and a second electric blower 44 for applying negative pressure to the main body separation dust collecting unit 28 via the collection dust collecting unit 46 to generate a transfer force for moving the dust collected in the main body separation dust collecting unit 28 to the collection dust collecting unit 46. According to this configuration, in a state in which the electric vacuum cleaner 10 is separated from the station 12, the cover 54 can be kept in a closed state with respect to the main body separation dust collection unit 28 by the suction force, and dust can be prevented from being spilled from the dust collection chamber. In addition, in a state where the electric vacuum cleaner 10 is coupled to the station 12, the suction force of the cover 54 can be reduced to easily open the cover 54, and the collected dust can be smoothly transferred to the station 12.

The holding portion 64 may be moved to the retracted position Q separated from the opposing position P opposing the receiving portion 60 in conjunction with a connection operation for connecting the vacuum cleaner 10 to the station 12, for example. With this configuration, for example, switching between the closing operation and the opening operation of the cover 54 can be performed easily and smoothly.

The holding portion 64 may have, for example, the second magnetic body 66 incorporated therein, and may be moved to the retracted position Q separated from the opposing position P of the receiving portion 60 in conjunction with the connection operation of the electric vacuum cleaner 10 to the station 12. With this configuration, for example, even when metal dust or the like is adsorbed to the holding portion 64, it can be easily removed (cleaned). As a result, the holding portion 64 can stably adsorb the cover 54 (the receiving portion 60).

The second magnetic body 66 may be, for example, an electromagnet 66E, and electromagnetic induction may be stopped when the connection of the vacuum cleaner 10 to the station 12 is detected. With this configuration, for example, even when metal dust or the like is adsorbed to the holding portion 64, it can be easily removed (cleaned). As a result, the holding portion 64 can stably adsorb the cover 54 (the receiving portion 60). Further, the structure of the cleaner body 14 and the structure of the stay portion 18 can be simplified, and improvement in design, simplification of design, and the like can be facilitated.

Further, for example, the electric vacuum cleaner 10 may be provided with a grip portion 11 capable of being gripped and the electric vacuum cleaner 10 capable of being connected to the station 12 in an installation posture in which the cleaner body 14 is erected, and the rotation fulcrum portion 58 may be located above the disposal port when the electric vacuum cleaner 10 is in an installation posture in which the suction port 15a is located below the station 12. According to this configuration, for example, even if fine dust is spilled during the transportation of dust, the dust is less likely to adhere to the rotation fulcrum portion 58 of the cover 54, and a rotation failure is less likely to occur. Further, since the weight such as the first magnetic body 62 is separated from the rotation fulcrum portion 58, the rotation operation of the lid 54 at the time of the closing operation is easy. Further, when the supply of the transfer wind is stopped, the cover 54 is easily closed by its own weight, and the suction operation of the first magnetic body 62 and the second magnetic body 66 can be smoothly performed.

The receiving portion 60 including the first magnetic body 62 may be formed on the opposite side of the lid body 54 with respect to the rotation fulcrum portion 58 via a closing portion 54a closing the disposal port 48, for example. With this configuration, the lid main body 56 can be sucked at a position away from the rotation fulcrum portion 58, and the closing operation posture of the lid main body 56 can be stably maintained.

< Other examples >

Fig. 9 is an exemplary and schematic partial cross-sectional view showing other positional relationships between the coarse dust collecting part (coarse dust discarding port) and the fine dust collecting part (fine dust discarding port) of the electric vacuum cleaner 10.

In the case of the above embodiment, an example is shown in which the fine dust disposal opening 52 is located above the coarse dust disposal opening 50 (in the direction of arrow X1) when the vacuum cleaner 10 is connected to the station 12 in the installation posture in which the suction pipe 15 is raised with the suction port body 16 being located below (see fig. 5, etc.). On the other hand, in the case of fig. 9, when the electric vacuum cleaner 10A is connected to the station 12 in the installation posture in which the suction pipe 15 is raised with the suction port body 16 being located below, the coarse dust discarding port 50A is disposed above the fine dust discarding port 52A. In fig. 9, the electric vacuum cleaner 10A includes a centrifugal main body separation dust collection unit 28A.

In this case, the fine dust discarding port 52A and the coarse dust discarding port 50A can be opened or closed by a single cover 54A. Even when the coarse dust disposal port 50A is disposed above the fine dust disposal port 52A, it is desirable to accelerate the flow rate of the transfer air (corresponding to the air flow W2 in fig. 5) passing through the fine dust disposal port 52A as described with reference to fig. 5. In this case, therefore, the rotation fulcrum portion 58A serving as the rotation center at the time of opening and closing the cover 54A may be disposed at a position adjacent to the fine dust disposal port 52A on the side away from the coarse dust disposal port 50A with respect to the coarse dust disposal port 50A and the fine dust disposal port 52A disposed adjacently. In this configuration, the cover 54A is rotated in the direction of arrow R in the figure. The open area (space) formed by the lid 54A and the fine dust disposal opening 52A on the side close to the rotation fulcrum 58A is made smaller than the open area (space) formed by the lid 54A and the coarse dust disposal opening 50A on the side far from the rotation fulcrum 58A (space reduction). As a result, the flow rate of the air flow passing through the fine dust disposal port 52A increases, and the fine dust is easily discharged (transferred) from the fine dust disposal port 52A.

In the case of fig. 9, a rotation shaft is formed on the cover 54A side, and is inserted into a support hole formed in a part of the side wall 29Ac of the housing 29A of the main body separation dust collection unit 28A, thereby forming a rotation fulcrum portion 58A. In other embodiments, a support hole may be formed in the cover 54A side, and a rotation shaft formed in a part of the side wall 29Ac of the housing 29A of the main body separation dust collection unit 28A may be inserted into the support hole to form the rotation fulcrum portion 58A.

As shown in fig. 9, in order to dispose the coarse dust disposal port 50A above the fine dust disposal port 52A, it is necessary to change the arrangement relationship between the coarse dust separating portion 34A and the coarse dust collecting portion 36A, and the fine dust separating portion 38A and the fine dust collecting portion 40A. For example, in the case of using the electric vacuum cleaner 10A, when dust is sucked from the suction pipe 15A side together with the suction flow by the driving of the first electric blower, not shown, the suction flow and the dust move to the first separated dust collection unit 30A composed of the coarse dust separation unit 34A and the coarse dust collection unit 36A. The suction flow and dust flowing into the first dust separating and collecting unit 30A revolve along the outer peripheral side of the coarse dust separating unit 34A, that is, the inner peripheral surface of the housing 29A constituting the coarse dust collecting unit 36A, and coarse dust is separated from the suction flow (air) by centrifugal force. The separated coarse dust is accumulated (collected) in the coarse dust collecting portion 36A.

The fine dust passing through the cylindrical member 34Aa (coarse dust collecting part 36A) together with the suction flow (air) moves to the second separation dust collecting part 32A composed of the fine dust separating part 38A and the fine dust collecting part 40A. The fine dust separation unit 38A includes a centrifuge group formed of a plurality of cone-shaped centrifuges 38Aa, and air and dust flow into the centrifuges 38Aa from the center of the centrifuge group, so that the fine dust is centrifugally separated on the inner wall of the centrifuges 38 Aa. The air from which the fine dust is separated is discharged from the upper portion of the centrifugal body 38Aa to the outside of the cleaner body 14A via a first electric blower, not shown. The fine dust separated by the centrifugal bodies 38Aa is accumulated (collected) in the fine dust collecting portion 40A.

The coarse dust accumulated in the coarse dust collecting unit 36A is discharged from the coarse dust discarding port 50A at the time of opening the cover 54A. Similarly, the fine dust accumulated in the fine dust collecting part 40A is discharged from the fine dust disposal opening 52A at the time of opening the cover 54A. At this time, as described above, the flow rate of the air flow passing through the fine dust disposal port 52A increases, and therefore, fine dust is easily discharged (transferred) from the fine dust disposal port 52A.

In addition, the structure of the receiving portion 60 and the holding portion 64 described in fig. 4 and 5 may be applied to the structure of fig. 9, so that the maintenance of the closing operation posture of the lid 54A can be enhanced.

While the present utility model has been described with reference to several embodiments, these embodiments are presented by way of example and are not intended to limit the scope of the utility model. These novel embodiments can be implemented in various other modes, and various omissions, substitutions, and changes can be made without departing from the scope of the utility model. These embodiments and modifications thereof are included in the scope and gist of the utility model, and are included in the embodiments described in the claims of the utility model and the scope equivalent thereto.

Claims (6)

1. An electric dust collector is characterized by comprising:

Station, and

An electric vacuum cleaner capable of being coupled to and decoupled from the station,

The electric dust collector comprises a dust collector main body having a first electric blower for generating an attractive force for attracting dust, a main body separation dust collecting part, a cover for opening and closing a waste port provided in the main body separation dust collecting part, a holding part capable of holding the cover in a closing operation, and a suction pipe having an attractive port for sucking air by the attractive force of the first electric blower,

The main body separation dust collection part comprises:

a separating unit for separating dust from air containing the dust, and

A dust collection chamber for accumulating the dust separated by the separation unit and having a part of the dust collection chamber provided with the waste port capable of discharging the accumulated dust,

The cover body comprises:

A cover main body;

A rotation fulcrum portion provided at one end side of the cover main body, and

A receiving part including a first magnetic body provided in the cover at the other end side of the rotation fulcrum part,

The holding portion has a second magnetic body capable of being attracted to the first magnetic body at a position facing the receiving portion when the lid body is closed, applies an attraction force to the first magnetic body in a state in which the vacuum cleaner is separated from the station, maintains a closed state by the closing operation of the lid body, reduces the attraction force to the first magnetic body in a state in which the vacuum cleaner is coupled to the station, allows an opening operation of the lid body,

The station includes:

a dust inlet connected to the waste port when the electric vacuum cleaner is connected;

a dust collecting and collecting part connected to the dust inlet and capable of receiving the dust collected in the main body separating and collecting part, and

And a second electric blower for applying negative pressure to the main body separation dust collection unit via the recovery dust collection unit to generate a transfer force for transferring the dust collected in the main body separation dust collection unit to the recovery dust collection unit.

2. An electric dust collector as set forth in claim 1, characterized in that,

The holding portion moves to a retracted position separated from an opposing position opposing the receiving portion in conjunction with a connection operation for connecting the electric vacuum cleaner to the station.

3. An electric dust collector as set forth in claim 1, characterized in that,

The second magnetic body is incorporated in the holding portion, and moves to a retracted position separated from a position facing the receiving portion in conjunction with a connection operation for connecting the vacuum cleaner to the station.

4. An electric dust collector as set forth in claim 1, characterized in that,

The second magnetic body is an electromagnet, and stops electromagnetic induction when the connection of the electric dust collector to the station is detected.

5. An electric dust collector as set forth in claim 1, characterized in that,

The electric vacuum cleaner is provided with a holding part capable of being held and is capable of being connected with the station in a mounting posture of standing the vacuum cleaner main body,

When the electric vacuum cleaner is in the mounting posture with respect to the station with the suction port being below, the rotation fulcrum portion is located above the disposal port.

6. An electric dust collector as set forth in claim 1, characterized in that,

The receiving portion including the first magnetic body is formed on the opposite side of the lid body with respect to the rotation fulcrum portion via a closing portion closing the discarding port.