CN111616639A

CN111616639A - Electric vacuum cleaner

Info

Publication number: CN111616639A
Application number: CN202010098202.XA
Authority: CN
Inventors: 冈康弘
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2019-02-28
Filing date: 2020-02-18
Publication date: 2020-09-04
Also published as: JP7169904B2; JP2020137835A

Abstract

Provided is an electric vacuum cleaner which can promote correct operation of a user. An electric vacuum cleaner includes a dust collecting device having a lock mechanism portion, and a driving device including a mounting portion on which the dust collecting device is mounted so as to be lockable and unlockable by the lock mechanism portion and having an electric blower built therein, the dust collecting device having an operation knob capable of unlocking the dust collecting device mounted on the mounting portion of the driving device and locked by the lock mechanism portion, the unlocking operation of the operation knob being an operation of moving the operation knob in a direction different from a direction in which the operation knob is pulled when the dust collecting device is lifted from the mounting portion after the unlocking operation.

Description

Electric vacuum cleaner

Technical Field

The present invention relates to an electric vacuum cleaner.

Background

As a conventional electric vacuum cleaner, an electric vacuum cleaner including a cleaner main body having a driving device for an electric blower and a dust collecting device for collecting dust is known in japanese unexamined patent application publication No. 2014-23859. In the cleaner body, the driving device has a mounting portion on which the dust collecting device is detachably mounted and a pair of locking recesses provided on the mounting portion. The dust collecting device is provided with an operating handle part and a pair of clamping claw parts, wherein the operating handle part is arranged on a separating body on the upper part of the shell part in a swinging way, the pair of clamping claw parts can be clamped with the pair of clamping concave parts, and when the dust collecting device is detached from the driving device, the operating handle part is grabbed and pulled up to enable the clamping claw parts to swing and separate from the clamping concave parts.

Disclosure of Invention

Problems to be solved by the invention

In the vacuum cleaner main body of the conventional electric vacuum cleaner, a handle for carrying is provided in the vicinity of the mounting portion of the driving device, but when the user carries the vacuum cleaner main body, the user erroneously grips and lifts the operating handle portion of the dust collecting device, and as a result, the respective engaging claws are disengaged from the respective engaging recesses, and the dust collecting device is detached from the driving device.

In view of such circumstances, an object of the present invention is to provide an electric vacuum cleaner which a user can operate properly.

Means for solving the problems

According to the present invention, there is provided an electric vacuum cleaner including a dust collecting device having a lock mechanism portion, and a driving device including a mounting portion on which the dust collecting device is mounted so as to be lockable and unlockable by the lock mechanism portion and incorporating an electric blower,

the dust collecting device has an operation handle capable of releasing the locking of the dust collecting device which is placed on the placing portion of the driving device and locked by the locking mechanism portion,

the unlocking operation of the operating handle is an operation of moving the operating handle in a direction different from a direction in which the operating handle is pulled up when the dust collecting device is lifted from the mounting portion after the unlocking operation.

Advantageous effects

In the electric vacuum cleaner of the present invention, the unlocking operation and the lifting operation of the operating handle are operations for moving the operating handle in different directions, and the lifting operation is an operating handle used when the dust collecting device is lifted from the mounting portion after the unlocking operation. Thus, even if the user lifts the operation handle by mistake during the transportation of the driving device, the locking of the locking mechanism part is not released, and the dust collecting device is not separated from the driving device.

Drawings

Fig. 1 is a perspective view showing an electric vacuum cleaner according to a first embodiment of the present invention.

Fig. 2 is a perspective view of the drive device of the electric vacuum cleaner of the first embodiment as viewed from above.

Fig. 3 is a sectional view illustrating a locked state of a mounting part of a dust collecting device of the electric vacuum cleaner according to the first embodiment.

Fig. 4 is an operation schematic diagram of the lock mechanism portion of the dust collector of the first embodiment, where (a) is a locked state and (B) is an unlocked state.

Fig. 5 is an operation schematic diagram of a lock mechanism unit of the dust collector of the second embodiment, where (a) is a locked state and (B) is an unlocked state.

Fig. 6 is an operation schematic diagram of a lock mechanism unit of a dust collector according to a third embodiment, where (a) is a locked state and (B) is an unlocked state.

Detailed Description

(first embodiment)

(integral constitution of electric vacuum cleaner)

Fig. 1 is a perspective view showing an electric vacuum cleaner according to a first embodiment of the present invention, fig. 2 is a perspective view of a driving apparatus of the electric vacuum cleaner according to the first embodiment as viewed from above, and fig. 3 is a sectional view illustrating a locked state of a mounting portion of a dust collecting device of the electric vacuum cleaner according to the first embodiment. In fig. 2 and 3, the front, rear, left, right, and up-down directions of the driving device 11 are shown by arrows.

As shown in fig. 1 to 3, the electric vacuum cleaner 1 is a canister type electric vacuum cleaner, and includes a cleaner main body 10; a flexible hose 20 detachably connected to the tubular connection part 11a of the cleaner body 10; a handle 30 provided on the upstream end side in the direction of air flow (airflow direction) of the flexible hose 20; an operation switch unit 40 having a power switch, a power change-over switch, and the like provided on the handle 30; an extension pipe 50 detachably connected to the connection portion 20a on the upstream end side of the flexible hose 20; and a suction port body 60 detachably connected to a connection portion 50a on the upstream side of the extension pipe 50.

The cleaner body 10 includes a driving device 11 and a dust collecting device 12, which is detachably mounted on the driving device 11.

The driving device 11 incorporates an electric blower (not shown) in a housing 11b, and includes a pair of wheels 11c provided on the left and right of the housing 11b, a front wheel (not shown) provided at the bottom of the housing 11b, an exhaust port 11d provided at the rear of the housing 11b, and a mounting portion 11e provided at the front of the housing 11b and on which a dust collecting device 12 is detachably mounted.

The mounting portion 11e is a substantially cylindrical portion having a bottom and an upper opening, and the dust collecting device 12 is housed in the substantially cylindrical space.

The mounting portion 11e has a window portion 11ea and a locking recess portion 11eb described below. The window portion 11ea is provided at an intermediate position in the height direction of the peripheral wall portion of the mounting portion 11e, and dust accumulated in a dust collection container 12a described later of the dust collection device 12 mounted on the mounting portion 11e can be viewed from the window portion 11 ea.

The locking recesses 11eb are provided on the left and right sides of the upper portion of the peripheral wall of the mounting portion 11e, and are locked to locking recesses 12db, which will be described later, of the dust collecting device 12 provided on the mounting portion 11e so as to be able to be locked and released. In the case of the present embodiment, a case is exemplified in which the locking recess 11eb is provided at one position on the right side of the peripheral wall portion.

A connection portion 11a is provided in a front portion of the peripheral wall portion of the mounting portion 11e, and the inside of the connection portion 11a and the space inside the mounting portion 11e communicate with each other. The opening 11ec of the connecting portion 11a on the mounting portion 11e side is hermetically connected to an air inlet 12ab of a dust collection container 12a described later of the dust collection device 12 mounted on the mounting portion 11 e.

An air inlet 11f of a ventilation path (not shown) is provided on the surface of the housing 11b on the side of the placement portion 11e, and the air inlet 11f accommodates an electric blower (not shown) in the housing 11b and communicates with the exhaust port 11 d. The air inlet 11f is connected to an air outlet (not shown) of a dust collecting container 12a, which will be described later, of the dust collecting device 12 placed on the placing portion 11e in a sealing manner.

A lead shaft (not shown) is provided at the rear of the housing 11b, and a connection plug 11g at the tip of a power cord (not shown) wound around the lead shaft can be pulled out from the rear of the housing 11 b. A winding start button 11h for winding the drawn power cord around the cord reel is provided on the upper surface of the rear portion of the housing 11 b. Further, a substantially U-shaped handle 11i to be gripped when the drive device 11 is conveyed is provided at a position above the connection portion 11a of the peripheral wall portion of the placement portion 11 e. The drive device 11 may be of a battery-driven type.

(construction of dust collecting device)

As shown in fig. 3, the dust collecting device 12 includes a dust collecting container 12a and a cover 12b constituting the outer portion thereof, a filter 12c housed in the dust collecting container 12a, and a lock mechanism 12d provided in the cover 12 b.

(dust collecting container)

The dust collection container 12a is formed in a substantially cylindrical shape having an upper opening and a bottom, and an air inlet 12ab is provided in a part of the peripheral wall 12 aa.

(Cap portion)

The lid portion 12b is a member for covering the internal filter portion 12c of the dust collection container 12a attached to the upper opening portion of the dust collection container 12a, and has an annular upper wall portion 12ba and a cylindrical peripheral wall portion 12bb, and is formed in a downwardly open shape.

The lid 12b is provided with an air outlet (not shown) at one portion of the peripheral wall portion 12bb, and an outer insertion hole 12bc through which a second moving member 12h, which will be described later, of the lock mechanism portion 12d is inserted is provided at the other portion of the peripheral wall portion 12 bb. In a state where the dust collecting device 12 is mounted on the mounting portion 11e of the driving device 11, the air inlet 12ab of the dust collecting container 12a is disposed at the front, the air outlet, not shown, is disposed at the rear, and the outer insertion hole 12bc is disposed at the right side.

Further, an upwardly open recess 12bd for accommodating the lock mechanism 12d is provided at the center of the upper wall 12ba of the lid 12b, and an inner insertion hole 12be through which a second moving member 12h, described later, of the lock mechanism 12d is inserted is provided at a lower portion of the peripheral wall of the recess 12 bd. The inner insertion hole 12be and the outer insertion hole 12bc are opened at positions overlapping each other when viewed from the side.

(filtration part)

The filter part 12c includes a filter part 12ca and a mesh cylinder part (a part indicated by a two-dot chain line) 12cb, the filter part 12ca is fitted into an upper opening of the dust collection container 12a, and the mesh cylinder part 12cb is provided so as to hang down from the filter part 12 ca.

The filter unit 12ca has a pleated filter main body held in a cup-shaped holding member.

The mesh tube portion 12cb has an outer tube frame around which the mesh member is wound, and an inner tube frame provided in the outer tube frame, and this outer tube frame serves as a holding member for the filter portion 12 ca.

Further, a dust removing portion 12e is provided above the filter portion 12ca, and a compressing portion 12f is provided below the mesh tube portion 12cb, the dust removing portion 12e vibrating the filter body to drop dust adhering to the filter body, and the compressing portion 12f compressing dust in the dust collecting container 12 a.

The dust removing portion 12e includes a plurality of sliding members connected to a shaft portion penetrating the filter portion 12 ca.

The compression portion 12f has a helical blade on the outer peripheral surface of a cylindrical body connected to the lower end of the mesh cylinder portion 12 cb.

According to the filter unit 12c, when the cover portion 12b is removed from the dust collection container 12a, the dust removal portion 12e is manually rotated about the shaft portion, and the plurality of sliding members slide on the filter body, whereby the filter body vibrates and dust adhering to the filter body falls into the dust collection container 12 a. At this time, the rotation of the shaft portion is transmitted to the compression portion 12f via the inner cylinder frame of the mesh cylinder portion 12cb, and the spiral blade of the compression portion 12f is rotated to compress the dust in the dust collection container 12 a.

(locking mechanism part)

As shown in FIGS. 3 and 4, the locking mechanism portion 12d has an operating handle 12da provided on a cover portion 12b which is an outer portion of the dust collection device 12; a locking convex part 12db which can be locked with a locking concave part 11eb of a carrying part 11e of the driving device 11; and a movement direction converting portion, which is described later, for converting the unlocking operation of the operating handle 12da into the linear movement of the locking convex portion 12 db.

The operating handle 12da is formed in a circular plate shape and is receivable in a receiving recess 12bf formed in an upper portion of the recess 12bd of the lid 12 b. Further, for example, a vibration damping material 12x such as sponge may be provided on the inner bottom surface of the housing recess 12 bf.

In a state where the operation knob 12da is accommodated in the accommodation recess 12bf, the upper outer surface 12dd as the upper surface of the operation knob 12da and the upper surface (exposed surface) 12bg as the upper wall portion 12ba of the lid portion 12b are arranged in substantially the same one surface. That is, the upper outer surface 12dd of the operation knob 12da may be disposed on the same surface as the upper surface 12bg of the upper wall portion 12ba of the lid portion 12b, may be buried in the accommodation recess 12bf, or may protrude from the upper surface 12bg to such an extent that the operation knob 12da cannot be grasped by a finger of a human being.

In the case of the present embodiment, the moving direction switching section includes the first moving member 12g, the second moving member 12h, and the biasing member 12i of the alternate operation type.

The first moving member 12g is formed in a substantially rectangular parallelepiped shape having a first inclined surface 12ga, and is coupled to the operating knob 12da movably in the first linear direction a.

Here, the first straight direction a refers to a direction in which the operating handle 12da approaches the upper surface 12bg of the lid 12b and a direction in which the operating handle protrudes from the upper surface 12 bg. In fig. 3, the first linear direction a is the up-down direction.

In addition, the first moving member 12g is movably supported in the first linear direction a by a rib structure provided inside the cover portion 12 b.

The first inclined surface 12ga is a surface inclined at an inclination angle θ 1 of about 45 ° with respect to the first straight line direction a, as viewed in the lateral direction (see fig. 4B).

The second moving member 12h is formed in a rectangular parallelepiped shape having a hole 12hb inserted into the lower end of the first inclined surface 12ga side of the first moving member 12 g. The hole 12hb has a second inclined surface 12ha, and the second inclined surface 12ha is slidably connected to the first inclined surface 12ga of the first moving member 12g moving in the first linear direction a.

The second moving member 12h is movably supported by a rib structure provided in the lid portion 12B in a second linear direction B substantially perpendicular to the first linear direction a. In fig. 3, the second straight direction B is the left-right direction.

The second inclined surface 12ha is a surface inclined at an inclination angle θ 2 of about 45 ° with respect to the second linear direction B, as viewed in the lateral direction (see fig. 4B).

The second moving member 12h is provided with a locking protrusion 12db continuously at one of both ends in the second linear direction B, that is, at an end on the moving direction side of the second moving member 12h when the first moving member 12g is lowered. That is, the locking convex portion 12db is an end portion that can protrude outward from the lid portion 12b of the second moving member 12h (see fig. 4 a).

The biasing member 12i of the alternate operation system is a member having a shaft portion 12ib, and the shaft portion 12ib extends or contracts in the same operation principle as that of a known switch of the alternate operation system.

In the urging member 12i, the shaft portion 12ib is movably supported in the second linear direction B by a rib structure provided in the lid portion 12B.

Further, in the biasing member 12i, the body 12ia is fixed to the rib structure, and the shaft portion 12ib that extends or contracts with respect to the body 12ia is fixed to the connecting piece 12hc connected to the second moving member 12h (see fig. 4B).

In the locking mechanism portion 12d having such a configuration, in the locked state shown in fig. 3 and 4(a), the locking convex portion 12db of the second moving member 12h protrudes outward from the outer insertion hole 12bc of the cover portion 12 b. That is, in a state where the dust collection device 12 is placed in the placement portion 11e of the drive device 11, the locking convex portion 12db of the locking mechanism portion 12d can enter (lock) the locking concave portion 11eb of the placement portion 11e, and becomes a locked state.

At this time, since the operating handle 12da of the dust collection device 12 is received in the receiving recess 12bf of the cover 12b, the upper outer surface 12dd of the operating handle 12da and the upper surface 12bg of the cover 12b are disposed in a flat state on substantially the same one surface. The urging member 12i is in a shortened state in which the shaft portion 12ib enters the body portion 12 ia.

When the locking state of the locking mechanism portion 12d shown in fig. 4(a) is released, the vibration damping material 12x is compressed and the first moving member 12g is slightly pressed when the operating knob 12da is pressed. At this time, the first inclined surface 12ga of the first moving member 12g and the second inclined surface 12ha of the second moving member 12h are slidably connected, and the second moving member 12h slightly moves toward the locking convex portion 12db in the second linear direction B. At the same time, the coupling piece 12hc of the second moving member 12h slightly moves toward the locking projection 12db in the second linear direction B, so that the shaft portion 12ib of the biasing member 12i is slightly pressed.

Since the biasing member 12i is of the alternate operation type, when the shaft portion 12ib is slightly pressed, as shown in fig. 4 (B), the biasing member 12i is in an extended state in which the shaft portion 12ib extends from the body portion 12ia, and thereby the second moving member 12h moves to the opposite side of the locking convex portion 12db in the second linear direction B. As a result, the locking convex portion 12db is disengaged from the locking concave portion 11eb of the mounting portion 11e of the driving device 11, and the lock is released.

In this way, the unlocking operation of the lock mechanism 12d can be performed by pressing the operating knob 12 da.

Further, when the second moving member 12h moves to the opposite side of the locking convex portion 12db, the second inclined surface 12ha of the second moving member 12h is slidably connected to the first inclined surface 12ga of the first moving member 12g, and thereby the first moving member 12g moves toward the operation knob 12da in the first linear direction a. Thus, since the operating handle 12da protrudes from the upper surface 12bg of the cover 12b, the user can grasp the operating handle 12da to lift and detach the dust collecting device 12 from the mounting portion 11e of the driving device 11.

When the dust collecting device 12 is remounted on the mounting portion 11e of the driving device 11 and the operating handle 12da is pushed into the housing recess 12bf of the cover portion 12b, that is, when the operating handle 12da is moved in a direction to approach the upper surface 12bg of the cover portion 12b, the first moving member 12g is moved toward the second moving member 12h in the first linear direction a as shown in fig. 4 (a). At this time, the first inclined surface 12ga of the first moving member 12g and the second inclined surface 12ha of the second moving member 12h are slidably connected, so that the second moving member 12h moves to the locking convex portion 12db side in the second linear direction B, and the locking convex portion 12db is locked with the locking concave portion 11eb of the mounting portion 11e, thereby being in the locked state. At the same time, the coupling piece 12hc of the second moving member 12h moves toward the locking projection 12db in the second linear direction B, so that the shaft portion 12ib of the biasing member 12i is in a shortened state.

In this way, the locking operation of the locking mechanism 12d can also be performed by pressing the operating knob 12 da.

(electric vacuum cleaner in use)

Next, the electric vacuum cleaner 1 in use will be described with reference to fig. 1 to 4.

In the usable state of the electric vacuum cleaner 1, the dust collecting device 12 is inserted into and mounted on the mounting portion 11e of the driving device 11. In this state, the locking mechanism 12d of the dust collection device 12 is locked to the mounting portion 11e as described above (see fig. 3 and fig. 4 a). At this time, the upper outer face 12dd of the operating handle 12da of the dust collection device 12 and the upper face 12bg of the cover portion 12b become flat continuous surfaces with almost no step therebetween. Therefore, when the cleaner body 10 is carried, since there is no projection on the upper surface of the dust collection device 12 that can be gripped by hand, the user can easily recognize that the handle 11i of the driving device 11 is the handle for carrying (see fig. 1). This reduces the possibility that the user will carry the cleaner body 10 by mistakenly gripping the operating handle 12da of the dust collection device 12.

When the power switch of the operation switch unit 40 is turned on, the electric blower (not shown) in the driving device 11 is driven, air containing dust on the surface to be cleaned (air containing dust) is sucked by the suction port (not shown) of the suction port body 60, and the air containing dust flows into the dust collection container 12a of the dust collection device 12 through the extension pipe 50 and the flexible hose 20. The larger first dust in the dust-containing air flowing into the dust collection container 12a rotates on the inner surface of the dust collection container 12a due to centrifugal force, and the air containing the second dust smaller than the first dust passes through the mesh tube portion 12cb and faces the filter portion 12 ca. The second dust is captured by the filter portion 12ca, and the air from which the second dust having passed through the filter portion 12ca is removed flows from within the cover portion 12b into the drive device 11 and is discharged from the exhaust port 11 d.

When the power switch is turned off to complete the cleaning operation and the dust collection device 12 is detached from the drive device 11, the operation handle 12da protrudes upward when the operation handle 12da is pressed, and therefore the user can detach the dust collection device 12 from the drive device 11 by gripping the operation handle 12da and lifting it (see fig. 4B).

As described above, according to the present embodiment, the directions in which the operating handle 12da moves are made different from each other in the unlocking operation of the locking mechanism portion 12d of the pressing operating handle 12da and the lifting operation of the operating handle 12da when the dust collection device 12 is detached from the driving device 11. In addition, the operating handle 12da of the dust collecting device 12 attached to the driving device 11 in the locked state is not grasped by the user.

Therefore, according to the present embodiment, there is no possibility that the user erroneously lifts the operating handle 12da when he or she wants to lift the driving device 11, thereby releasing the lock and lifting the dust collection device 12, and the dust collection device 12 is unintentionally detached from the driving device 11.

After the cover portion 12b of the dust collection device 12 is removed from the dust collection container 12a, the dust removal portion 12e is rotated so that the dust attached to the filter portion 12ca can fall into the dust collection container 12a by vibration. At this time, the compression part 12f rotates and causes the dust accumulated at the bottom of the dust collection container 12a to be compressed.

When the dust in the dust collection container 12a is accumulated to some extent and it becomes difficult to compress the dust by the compression part 12f, the filter part 12c and the compression part 12f connected thereto are detached from the dust collection container 12a, and the dust collection container 12a can be tilted to discard the dust to a trash box.

(second embodiment)

Fig. 5 is an operation schematic diagram of a lock mechanism unit of the dust collector of the second embodiment, where (a) is a locked state and (B) is an unlocked state. In fig. 5(a) and (B), the same elements as those in fig. 4(a) and (B) are denoted by the same reference numerals.

The electric vacuum cleaner of the second embodiment has the same configuration as that of the first embodiment except that the lock mechanism 112d of the dust collection device 112 is different from that of the first embodiment. Hereinafter, differences between the second embodiment and the first embodiment will be mainly described.

As shown in fig. 5(a) and (B), in the lock mechanism portion 112d of the second embodiment, the operating handle 112da is provided on the lid portion 112B so as to be rotatable about an axial center P parallel to the first linear direction a.

The movement direction switching part of the lock mechanism part 112d includes a cylindrical shaft part 112g connected to the operation knob 112da at the axial center P; a cam portion 112j which is rotatably connected to the lower end of the shaft portion 112g with the shaft center P as the center; a moving member 112h slidably connected to the rotating cam portion 112j and moving in a second linear direction B substantially perpendicular to the first linear direction a; and a biasing member 112i for biasing the operating handle 112da in the protruding direction, and the locking protrusion 12db is coupled to the moving member 112 h. The shaft 112g, the moving member 112h, and the urging member 112i are supported by a rib structure in the cover 112 b.

The operating handle 112da has a plurality of finger recesses 112df at the outer shaft portion. Thus, the user can rotate the operation knob 112da around the shaft center P while holding his or her fingers in the plurality of finger concave portions 112df of the operation knob 112da stored in the storage concave portion 112bf of the lid portion 112 b. In this case, upper outer surface 112dd of operation knob 112da is disposed in substantially the same one surface as upper surface 112bg of lid 112 b.

The urging member 112i is a compression coil spring provided around the shaft portion 112g, and has an upper end abutting against the operating knob 112da and urging the same in the protruding direction while a lower end is supported by a rib structure in the lid portion 112 b.

The cam portion 112j has a small cam 112ja protruding from a part of the outer peripheral surface of the lower end of the shaft portion 112g, and a large cam 112jb continued to the lower end of the small cam 112 ja.

The moving member 112h is formed in a rectangular parallelepiped shape having a circular hole 112hb through which the shaft portion 112g and the cam portion 112j are inserted.

In the locked state of the lock mechanism portion 112d shown in fig. 5(a), the cam portion 112j moves toward the locking convex portion 12db, and at this time, the small cam 112ja abuts against the inner peripheral surface of the hole portion 112hb of the moving member 112h, and the large cam 112jb hooks the lower surface of the moving member 112 h. Thereby, the housed state in the housing concave portion 112bf of the operation knob 112da is maintained against the urging force of the urging member 112 i.

At this time, since the operation knob 112da of the dust collection device 112 is received in the receiving recess 112bf of the cover 112b, the upper outer surface 112dd of the operation panel 112da and the upper surface 112bg of the cover 112b are arranged in a flat state on substantially the same one surface.

When the locked state of the lock mechanism portion 112d is released, the operation knob 112da is rotated about the axial center P, whereby the cam portion 112j is rotated to the opposite side of the locking convex portion 12db as shown in fig. 5 (B). Meanwhile, since the small cam 112ja is slidably connected to the inner peripheral surface of the hole 112hb of the moving member 112h, the moving member 112h moves to the opposite side of the locking convex portion 12db in the second linear direction B. As a result, the locking convex portion 12db is disengaged from the locking concave portion 11eb of the mounting portion 11e of the driving device 11, and the lock is released (see fig. 1 and 3).

In this way, the unlocking operation of the lock mechanism 112d can be performed by rotating the operation knob 112 da.

When the cam portion 112j is rotated by 180 ° toward the center angle, the operating knob 112da, the shaft portion 112g, and the cam portion 112j are moved toward the operating knob 112da in the first linear direction a by the urging member 112 i. As a result, small cam 112ja is separated from hole 112hb of moving member 112h, and large cam 112jb moves into hole 112 hb. Further, the cam portion 112j hooks the rib structure in the cap portion 112b so that the shaft portion 112g is prevented from coming off. Further, the sliding connection surface between the cam portion 112j and the moving member 112h may be smoothly curved so that the large cam 112jb can smoothly move in the hole portion 112hb of the moving member 112 h.

Since the operating handle 112da thus protrudes from the upper surface 112bg of the cover 112b, the user can grasp the operating handle 112da to lift and detach the dust collecting device 112 from the mounting portion 11e of the driving device 11 (see fig. 1 and 3).

When the dust collecting device 112 is remounted on the mounting portion 11e of the driving device 11 and the operating knob 112da is pushed into the housing recess 112bf of the lid portion 112b, that is, when the operating knob 112da is moved in a direction to approach the upper surface 112bg of the lid portion 112b, the small cam 112ja of the cam portion 112j is moved into the hole portion 112hb of the moving member 112 h. Thereafter, when the operating knob 112da is rotated about the shaft center P, the moving member 112h is moved toward the locking convex portion 12db in the second linear direction B by the small cam 112ja as shown in fig. 5 (a). Thereby, the locking convex portion 12db is locked with the locking concave portion 11eb of the placing portion 11e, and becomes a locked state (see fig. 3).

In this way, the locking operation of the locking mechanism portion 12d can be performed by turning the operation knob 12 da.

(third embodiment)

Fig. 6 is an operation schematic diagram of a lock mechanism unit of a dust collector according to a third embodiment, where (a) is a locked state and (B) is an unlocked state. In fig. 6(a) and (B), the same elements as those in fig. 4(a) and (B) are denoted by the same reference numerals.

The electric vacuum cleaner of the third embodiment has the same configuration as the first embodiment, except that the lock mechanism 212d of the dust collection device 212 is different from that of the first embodiment. Hereinafter, differences between the third embodiment and the first embodiment will be mainly described.

As shown in fig. 6(a) and (B), in the lock mechanism portion 212d of the third embodiment, a circular plate-shaped operating knob 212da is provided on the lid portion 212B so as to be rotatable about a shaft 212dx that is substantially perpendicular to the first linear axis a.

The housing recess 212bf of the cover 212b is formed in a substantially hemispherical shape.

The operation handle 212da is provided with a folded-sheet-shaped finger-digging piece portion 212dy which is easy to grasp the operation handle 212da at one end in a direction orthogonal to the axial center direction of the shaft 212dx, and is also provided with a notched portion 212dz at the other end opposite to the finger-digging piece portion 212 dy. When the operation handle 212da is rotated about the axis 212dx, the end portions of the finger piece portions 212dy and the notched portions 212dz are bent so as not to contact the cover portion 212 b.

Further, a projection 212bz is provided at a part of an opening edge of the housing recess 212bf of the cover portion 212b, and the projection 212bz abuts against the notch 212dz of the operation knob 212 da.

As shown in fig. 6(a), the operating knob 212da is disposed in substantially the same one surface as the upper outer surface 212dd of the operating knob 212da and the upper surface 212bg of the lid portion 212b in the closed state of the lock mechanism portion 212 d. At this time, the finger portion 212dy of the operation handle 212da is accommodated in the accommodation recess 212bf, and the notch portion 212dz abuts against the projection portion 212bz to define the rotational direction about the axis 212dx of the operation handle 212 da. That is, even if the finger piece portion 212dy side of the upper outer surface 212dd of the operation panel 212da is pressed, the operation knob 212da does not rotate.

The movement direction conversion unit of the lock mechanism 212d includes a first moving member 212g movable in a first linear direction a substantially perpendicular to the axial direction of the shaft 212dx, a second moving member 212h movable in a second linear direction B substantially perpendicular to the first linear direction a, and a biasing member 212i, and the locking convex portion 12db is coupled to the second moving member 212 h. The first moving member 212g, the second moving member 212h, and the urging member 212i are supported by a rib structure in the cover portion 212 b.

The first moving member 212g has a first inclined surface 212ga and a second inclined surface 212gb, and the first inclined surface 212ga is slidably connected to an operation knob 212da that rotates about a shaft 212 dx; the second inclined surface 212gb is provided on the opposite side of the first inclined surface 212ga in the first straight direction a.

The second moving member 212h has a third inclined surface 212ha slidably connected to the second inclined surface 212gb of the first moving member 212g moving in the first linear direction a, and a hole 212hb through which the lower end of the second inclined surface 212gb of the first moving member 212g is inserted.

The biasing member 212i is a compression coil spring that biases the second moving member 212h in a direction in which the third inclined surface 212ha of the second moving member 212h presses the second inclined surface 212gb side of the first moving member 212 g.

In the lock mechanism portion 212d having such a configuration, in the locked state shown in fig. 3 and 6(a), the second moving member 212h urged by the urging member 212i moves toward the locking convex portion 12db in the second linear direction B.

At this time, since the operation handle 212da of the dust collection device 212 is received in the receiving recess 212bf of the cover 212b, the upper outer surface 212dd of the operation panel 212da and the upper surface 212bg of the cover 212b are arranged in a substantially flat state on substantially the same one surface.

When the locked state of the lock mechanism portion 212d is released, the operation knob 212da is rotated about the shaft 212dx by pressing the upper outer surface 212dd on the projection portion 212bz side of the operation knob 212 da. As a result, as shown in fig. 6 (B), the end portion of the operation handle 212da on the notched portion 212dz side moves toward the bottom portion of the housing recess 212bf, and the end portion of the operation handle 212da on the finger piece portion 212dy side protrudes outward from the housing recess 212 bf. Further, the end portion of the second moving member 212da on the notched portion 212dz side is slidably connected to the first inclined surface 212ga of the first moving member 212g, whereby the first moving member 212g moves toward the second moving member 212h in the first linear direction a.

Further, the second inclined surface 212gb of the first moving member 212g that moves is slidably connected to the third inclined surface 212ha of the second moving member 212h, whereby the second moving member moves to the opposite side of the locking convex portion 12db in the second linear direction B against the biasing force of the biasing member 212 i. As a result, the locking convex portion 12db is disengaged from the locking concave portion 11eb of the mounting portion 11e of the driving device 11, and the lock is released (see fig. 1 and 3).

In this manner, the locking operation of the locking mechanism portion 212d can be performed by turning the operation knob 212 da.

Further, when the lock is released, since the operation handle 212da protrudes from the upper surface 212bg of the cover 212b from the end portion on the finger piece portion 212dy side, the user can hold the operation handle 212da to lift and detach the dust collecting device 212 from the mounting portion 11e of the driving device 11 (see fig. 1 and 3).

Further, when the dust collection device 212 is remounted on the mounting portion 11e of the drive device 11 and the end portion of the operation knob 212da on the side of the finger piece portion 212dy is pushed into the housing concave portion 212bf of the cover portion 212b as shown in fig. 6(a), that is, when the end portion of the operation knob 212da on the side of the finger piece portion 212dy is moved in a direction to come close to the upper surface 212bg of the cover portion 212b, the end portion of the operation knob 212da on the side of the notch portion 212dz is separated from the first moving member 212 g. Thereby, the second moving member 212h biased by the biasing member 212i moves toward the locking convex portion 12db, and at this time, the third inclined surface 212ha of the second moving member 212h is slidably connected to the second inclined surface 212gb of the first moving member 212 g. As a result, the first moving member 212g moves toward the operating handle 212da, and the locking convex portion 12db is locked to the locking concave portion 11eb of the placement bar 11e, thereby being in the locked state (see fig. 3).

(other embodiments)

1. In the second embodiment (fig. 5(a) and (B)), the lock mechanism portion 112d having the urging member 112i is illustrated, but the urging member 112i may be omitted. In this case, after the operating handle 112da is rotated and brought into contact with the lock, the operating handle 112da is grasped and manually lifted to lift the dust collection device 112.

2. In the first to third embodiments, the case where the upper outer surface of the operation handle and the upper surface of the lid portion of the dust collecting device are arranged in a flat substantially same surface is exemplified, but the outer surface of the operation handle and the upper surface of the lid portion may be arranged in a curved substantially same surface. In this way, the curved outer surface of the housing of the driving device and the upper surface of the dust collecting device can form a continuous surface, thereby improving the design.

3. Although the first embodiment (fig. 1) illustrates the case where the mounting portion 11e surrounding the dust collection device 12 is provided on the driving device 11, a driving device having an open type mounting portion not surrounding the dust collection device 12 (see, for example, patent document 1) may be associated with the dust collection device 12. In this case, the locking recess is formed at two positions on the open-type mounting portion of the driving device. In the dust collecting device, the two locking convex portions, which are the lock mechanism portions described in the first to third embodiments as the base, are configured to be locked and released with respect to the two locking concave portions. At this time, the two locking projections move back and forth in a V-shape direction, for example, or in a linear direction away from each other when viewed in a planar direction.

4. In the first embodiment (fig. 1), the dust collecting device 12 having the dust removing unit 12e for removing dust from the filter unit 12ca of the filter unit 12c and the compressing unit 12f for compressing dust in the dust collecting container 12a is illustrated, but the dust removing unit 12e and the compressing unit 12f may be omitted.

(conclusion)

The electric dust collector of the invention comprises a dust collecting device and a driving device, wherein the dust collecting device is provided with a locking mechanism part, the driving device comprises a carrying part which can lock and unlock the dust collecting device by the locking mechanism part and is internally provided with an electric blower,

According to this configuration, after the unlocking operation is performed by the operating handle, the dust collecting device can be lifted from the mounting portion of the driving device by performing a lifting operation different from the unlocking operation. Thus, even if the user lifts the operation handle by mistake during the transportation of the driving device, the locking of the locking mechanism part is not released, and the dust collecting device is not separated from the driving device. Further, according to this configuration, the operating handle is made difficult to grasp when the lock operation is released, so that it is possible to suppress an incorrect operation in which the user grasps the operating handle and lifts the driving device.

The electric vacuum cleaner of the present invention may have the following configuration, or may be an appropriate combination of these configurations.

The unlocking operation may be an operation of pressing the operation knob, an operation of rotating the operation knob, or an operation of pressing and rotating the operation knob.

With this configuration, the user can be made aware that the lifting operation of the release handle cannot be performed unless the release lock operation of the push or turn operation handle is performed.

The drive device has a locking recess in the placement portion,

the dust collecting device includes an outer portion having an exposed surface exposed to the outside in a state where the dust collecting device is mounted on the mounting device, and the lock mechanism portion provided on the outer portion,

the locking mechanism portion comprises the operation handle which can move in a approaching direction approaching to the exposed surface side of the external portion and a protruding direction protruding from the exposed surface; a locking convex part which can be locked with the locking concave part; a moving direction converting portion which can convert the unlocking operation into the linear movement of the locking convex portion,

the outer portion has a housing recess on the exposed surface, the housing recess housing the operating handle moving in the approaching direction,

the operating handle may have an outer surface disposed in substantially the same plane as the exposed surface of the outer portion in a state of being accommodated in the accommodating recess.

According to this configuration, since the operation knob before the lock release operation is stored in the storage recess of the exterior member and becomes a state in which it is difficult to grasp the operation knob, it is possible to suppress such an inappropriate operation that the user grasps the operation knob and lifts up the drive device.

The approach direction and the projection direction are the same first linear direction,

the first moving member, it has first inclined plane and couples to said operating handle movably in the said first straight line direction; a second moving member having a second inclined surface slidably connected to the first inclined surface of the first moving member moving in the first linear direction, and movable in a second linear direction substantially perpendicular to the first linear direction; a biasing member of an alternate operation type that biases the second moving member in a direction in which the second inclined surface presses the first inclined surface,

the locking protrusion may be coupled to the second moving member.

According to this configuration, after the dust collecting device is placed on the placing portion of the driving device while holding the operation handle in the protruding state, the first moving member is moved in the first linear direction by pressing (moving) the operation handle in the approaching direction, the second inclined surface is slidably connected to the first inclined surface of the moving first moving member, and the second moving member is moved in the second linear direction, so that the locking convex portion is locked to the locking concave portion, and the dust collecting device is placed in the locked state. At this time, the urging member is in a shortened state.

Further, by depressing the operation handle again, the urging member is depressed again via the first and second moving members to be in an extended state, and the second moving member is moved in the opposite direction by extending the urging member, and the locking protrusion is disengaged from the locking recess to release the lock, and the operation panel is automatically moved in the protruding direction via the second and first moving members. Thus, the dust collecting device can be detached from the mounting portion by lifting the operation handle.

the operating handle is rotatably arranged on the outer part by taking an axis parallel to the first straight line direction as a center,

the moving direction converting part comprises a shaft part connected with the operating handle on the axis; a cam portion rotatably coupled to the shaft portion about the shaft center; a moving member slidably connected to the rotating cam portion and moving in a second linear direction substantially perpendicular to the first linear direction,

the locking protrusion may be coupled to the moving member.

According to this configuration, after the dust collecting device is placed on the placing portion of the driving device while holding the operation handle in the protruding state, the operation handle is pressed (moved in the approaching direction) and rotated in one direction about the shaft portion, so that the moving member is moved in the second linear direction by the rotating cam portion, and the locking convex portion is locked to the locking concave portion, thereby bringing the dust collecting device into the locked state.

Further, by rotating the operation knob in the opposite direction, the moving member is moved in the opposite direction by the rotating cam portion and the locking protrusion is disengaged from the locking recess to unlock, and the dust collecting device can be detached from the mounting portion by pulling up (moving in the protruding direction) the operation knob.

The movement direction conversion unit may further include a biasing member for biasing the operation handle in the protruding direction.

According to this configuration, the operation knob is automatically pushed out in the protruding direction by the urging member when the unlocking operation is performed, and therefore, the user can easily grasp the operation knob when the lifting operation is performed.

The operating handle is rotatably provided on the outer portion via a shaft,

the moving direction converting section includes a first moving member movable in a first linear direction substantially perpendicular to an axial center direction of the shaft, a second moving member movable in a second linear direction substantially perpendicular to the first linear direction, and a biasing member,

the first moving member has a first inclined surface and a second inclined surface, and the first inclined surface is slidably connected to the operating handle that rotates about the shaft; the second inclined surface is provided on the opposite side of the first inclined surface in the first straight line direction.

The second moving member has a third inclined surface slidably connected to the second inclined surface of the first moving member moving in the first linear direction,

the urging member urges the second moving member in a direction in which the third inclined surface presses the second inclined surface,

the locking protrusion may be coupled to the second moving member.

According to this configuration, after the dust collecting device is placed on the placing portion of the driving device while holding the operation handle in the protruding state, the second moving member is moved in the second linear direction by the urging member by rotating the operation handle in one direction (approaching direction) about the shaft portion, and the locking convex portion is locked to the locking concave portion, thereby bringing the dust collecting device into the locked state.

Further, by rotating the operating handle in the opposite direction (projecting direction), the first inclined surface is slidably connected to the operating handle and the first moving member moves in the first linear direction, the third inclined surface is slidably connected to the second inclined surface of the moving first moving member and the second moving member moves in the opposite direction against the biasing force of the biasing member, and the locking convex portion is disengaged from the locking concave portion and becomes the unlocked state. Therefore, the dust collecting device can be detached from the mounting portion by holding the operation handle.

Furthermore, the disclosed embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is indicated not by the above description but by the scope of the claims, and is intended to include all modifications within the scope and meaning equivalent to the claims.

Claims

1. An electric vacuum cleaner comprising a dust collecting device having a lock mechanism part and a driving device having a mounting part for mounting the dust collecting device thereon so as to be lockable and unlockable by the lock mechanism part and having an electric blower built therein,

2. The electric vacuum cleaner according to claim 1, wherein the unlocking operation is an operation of pressing the operating handle, or an operation of rotating the operating handle, or an operation of pressing and rotating the operating handle.

3. The electric vacuum cleaner according to claim 1 or 2, wherein the driving device has a locking recess in the mounting portion,

the operating handle has an outer surface disposed in substantially the same plane as the exposed surface of the outer portion in a state of being accommodated in the accommodating recess.

4. The electric vacuum cleaner according to claim 3, wherein the approaching direction and the protruding direction are the same first linear direction,

the locking projection is coupled to the second moving member.

5. The electric vacuum cleaner according to claim 3, wherein the approaching direction and the protruding direction are the same first linear direction,

the locking projection is coupled to the second moving member.

6. The electric vacuum cleaner of claim 5, wherein the moving direction switching part further includes an urging member that urges the operation handle in the protruding direction.

7. The electric vacuum cleaner according to claim 3, wherein the operating handle is rotatably provided on the outer portion via a shaft,

the first moving member has a first inclined surface and a second inclined surface, and the first inclined surface is slidably connected to the operating handle that rotates about the shaft; the second inclined surface is provided on the opposite side of the first inclined surface in the first straight line direction,

the locking projection is coupled to the second moving member.