HK1068051A1 - The electric vacuum cleaner - Google Patents

Abstract

A vacuum cleaner of the present invention includes an electric blower for generating a suction air stream; a plurality of centrifugal separation parts for separating dirt particles from the suction air stream; and an air inlet installed upstream of the centrifugal separation parts. The suction air stream suctioned in the air inlet is divided in plural streams to flow into the respective centrifugal separation parts. By installing the multiple centrifugal separation parts, dirt collecting capability can be improved and, at the same time, a size of the vacuum cleaner can be scaled down in comparison with a case where a single large centrifugal separation part having equal dirt collecting capability is installed.

Description

Electric vacuum cleaner

Technical Field

The present invention relates to a general household electric vacuum cleaner, and more particularly, to an improvement in its convenience of use.

Technical Field

Such prior art vacuum cleaners are generally shown in figures 18 and 19.

In the drawings, reference numeral 1 is a main body of an electric vacuum cleaner, which is internally provided with an electric fan (not shown) for sucking dust and is communicated with a suction head 2 for sucking dust; reference numeral 3 denotes a dust collecting member, and the upper part thereof is a centrifugal separation unit 3a for separating the sucked dust and the suction air flow, and the lower part thereof is a dust storage unit 3b for storing the dust separated from the centrifugal separation unit 3 a. In addition, the dust collecting part 3 can be freely attached/detached to/from the main body 1.

When the above-described electric vacuum cleaner is operated, dust sucked from the suction head 2 together with the suction air flow is separated from the suction air flow in the centrifugal separation unit 3 a. Dust is directly accumulated in the dust accumulating unit 3b for accumulating dust, and the suction air flow is sucked from the inside of the dust collecting part 3 into the electric blower fan after passing through the filter 3 c.

Further, the centrifugal separation unit 3a and the dust storage unit 3b are each a cylindrical shape having a longitudinal central axis substantially vertical to each other (see, for example, Japanese patent laid-open No. 5-176871)

However, the above-described conventional electric vacuum cleaner has the following drawbacks. That is, if the dust collecting performance is improved, the centrifugal separation unit 3a for separating dust and a suction air flow and the dust storage unit 3b for storing the dust are required to be increased in size, but the size of the cleaner main body is increased.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide an electric vacuum cleaner capable of improving usability while downsizing a dust collecting member including a centrifugal separation unit and a dust storage unit without deteriorating dust collecting performance.

In order to achieve the above object, an electric vacuum cleaner of the present invention includes: an electric fan for generating a dust suction airflow; a plurality of centrifugal separation units for separating dust from a suction airflow; and an air suction port provided on the air suction upstream side of the centrifugal separation unit. Since the suction airflow flowing into the suction port is divided and then flows into the plurality of centrifugal separation units, the centrifugal separation units must be formed in a substantially cylindrical or conical shape in order to perform centrifugal dust collection. If only 1 centrifugal separation unit is provided, the size of the centrifugal separation unit is inevitably increased to improve the dust collecting performance, and thus the main body of the cleaner is also increased. However, in the above configuration of the present invention, since the plurality of centrifugal separation units are provided, the degree of freedom of the arrangement configuration can be increased, and the electric vacuum cleaner body can be downsized without lowering the dust collecting performance.

Drawings

FIG. 1 is a side sectional view of a cleaner main body of an electric vacuum cleaner according to embodiment 1 of the present invention,

figure 2 is a side sectional view of the main body of the cleaner,

FIG. 3 is a side view of the dust collecting part of the main body of the cleaner,

figure 4 is a front external view of the dust collecting part,

figure 5 is a top cross-sectional view of the dust collecting part,

figure 6 is a rear view of the dust collecting part (when holding the handle part),

figure 7 is a side cross-sectional view of the dust collection component,

figure 8 shows a side cross-sectional view of another dust collecting part,

figure 9 is a side view of the dust collecting part,

figure 10 is a side cross-sectional view of the dust collection component (with the cover open),

FIG. 11 is a partial sectional view showing the structure of the main body of the vacuum cleaner of the embodiment 2 of the present invention,

a partial structural sectional view of a dust collecting part in a main body of the electric vacuum cleaner is shown in fig. 12,

FIG. 13 is a sectional view showing a partial structure of a main body of the electric vacuum cleaner,

figure 14 is a sectional view showing a partial structure of the dust collecting part,

figure 15 is a sectional view showing a partial structure of the dust collecting part,

figure 16 is a sectional view showing a partial structure of another dust collecting part,

figure 17 is a sectional view showing a partial structure of the dust collecting part,

FIG. 18 is an external view of a conventional electric vacuum cleaner,

fig. 19 is a side sectional view of a dust collecting part in a conventional electric vacuum cleaner.

Detailed Description

An electric vacuum cleaner according to embodiment 1 of the present invention will be described with reference to fig. 1 to 10.

In fig. 1 to 10, 4 denotes a cleaner main body, and 5 denotes a dust collecting member. The dust collecting part 5 includes a centrifugal separation unit 7 and a dust accumulating unit 8. The centrifugal separation unit 7 communicates with an electric fan 6 for generating a suction air flow and a suction head (not shown) for sucking dust, is provided at an upper portion of the body, and centrifugally separates dust from the sucked suction air flow. The dust storage unit 8 is provided at a lower portion of the body for storing the dust separated from the centrifugal separation unit 7. In the dust collecting member 5, the central axis of the centrifugal separation unit 7 in the vertical direction is inclined at 30 ° with respect to the central axis of the dust storage unit 8 in the vertical direction.

In addition, reference numeral 9 is a suction port for causing the dust-containing suction air flow sucked from the suction head to flow into the dust collecting part 5, and 10 is a flow dividing port for dividing the dust-containing suction air flow sucked from the suction port 9 substantially equally into the plurality of centrifugal separation units 7 at the inlet of the centrifugal separation units 7. Further, 11 is a handle portion for carrying the dust collecting member 5; a dust collecting part cover 12 covering an opening 13 provided substantially above the dust collecting part 5 and provided with a filter unit 14 for filtering dust contained in a suction airflow sucked therein; reference numeral 15 denotes an operation member provided in the vicinity of the handle portion 11 for fixing or releasing the fixing between the dust collecting member cover 12 and the dust collecting member 5, and the operation member 15 can be operated smoothly while holding the handle portion 11.

Further, 16 is a prefilter which is disposed between the dust collecting member 5 and the dust collecting member cover 12, is substantially in the central axis of the centrifugal separation unit 7 in the vertical direction, has a substantially cylindrical shape, and accumulates coarse dust. Numeral 17 denotes a protective member provided below the pre-filter 16, and is substantially disc-shaped.

Further, 18 is a discharge port for discharging dust provided on the outer peripheral wall of the dust storage unit 8; a discharge port cover 19 covers the discharge port 18. The discharge port cover 19 is rotatably attached to a rotating shaft 20 near the discharge port 18, and a fixing member 21 for fixing the discharge port cover 19 during rotation is provided near the rotating shaft 20.

The operation and action of the above cleaner will be described below.

As shown in fig. 1 and 2, when the electric vacuum cleaner is operated, the dust-containing suction air flow sucked by the electric fan 6 passes through the suction port 9, is substantially equally divided by the flow dividing port 10 provided on the suction upstream side of the centrifugal separation unit 7, and is sucked in a tangential direction of the inner surface of the centrifugal separation unit 7 in such a state.

The suction airflow containing the sucked dust falls downward by its own mass while rotating around the inner peripheral wall surface of the centrifugal separation unit 7, and is stored in a dust storage unit 8 provided below the centrifugal separation unit 7. Then, the whirling airflow in the centrifugal separation unit 7 is reflected by the bottom surface of the dust storage unit 8 and rises again, and the dust stored in the whirling airflow is once again lifted upward. However, the dust is rebounded by the disk-shaped protective member 17 which is provided below the pre-filter 16, is opened downward, and has an outer dimension larger than that of the pre-filter 16, and is again accumulated in the dust accumulation unit 8. By repeating such operations, dust is accumulated in the dust accumulation unit 8.

After the centrifugal separation unit 7 separates coarse dust, the suction airflow containing fine dust passes through the pre-filter 16, passes through the filter unit 14 provided inside the dust collection member cover 12, is filtered to remove fine dust, is sucked into the electric fan 6 in a clean state, and is discharged into the atmosphere.

In addition, when the dust stored in the dust storage unit 8 is to be discharged, the first method is to take out the dust collecting member 5 from the main body, grasp the handle portion 11, press the operating member 15 provided inside the handle portion 11 while grasping the handle portion 11, release the fixation between the dust collecting member 5 and the dust collecting member cover 12, and open the dust collecting member cover 12 on the dust collecting member 5. Then, the dust in the dust collecting member 5 is discharged from the opening 13 at the upper part thereof.

In the second method, the dust collecting member 5 is taken out of the main body, and then the discharge port cover 19 provided at the lower part of the dust collecting member 5 is opened to dump the dust in the dust storing unit 8 through the discharge port 18.

As shown in fig. 1 to 3, since the centrifugal separation unit 7 in the dust collecting part 5 is inclined at an angle of 30 ° with respect to the dust storage unit 8, the overall height can be reduced as compared with the case where the centrifugal separation unit 7 and the dust storage unit 8 are arranged in series in the vertical direction. The invention can be utilized in both upright and recumbent type cleaners. In the present embodiment, the inclination angle is 30 °, but the above-described effect can be achieved by the inclination angle of 5 ° to 85 °.

In addition, since the centrifugal separation unit 7 is inclined as shown in fig. 1 to 3, a force for moving the dust downward is generated by the mass of the dust itself, and therefore, the problem that the dust separated from the suction air flow cannot be efficiently sent to the dust storage unit 8 when the centrifugal separation unit 7 and the dust storage unit 8 are horizontally arranged can be solved.

In addition, the dust accumulated in the dust accumulation unit 8 is blown up again by the centrifugal air flow in the centrifugal separation unit 7, so that the dust is not easily attached to the filter unit 16 in the centrifugal separation unit 7, and thus the decrease of the dust suction force can be prevented.

In addition, the centrifugal force occurring in the centrifugal separation unit 7 does not differ much in the upper and lower portions of the centrifugal separation unit 7, so that the drop in the dust suction force can be alleviated.

Further, since the centrifugal separation unit 7 is inclined, the shape of the dust storage unit 8 can be freely set without being restricted, and can be set as large as possible, and the dust collecting capacity of the dust collecting member 5 can be increased, so that the frequency of dumping garbage can be reduced, and the convenience in use can be improved.

By making the shape of the dust collecting member 5 thin as shown in fig. 4, 5 and arranging side by side in the horizontal direction, the overall shape of the dust collecting member 5 can be made into a rectangular shape having a cross section substantially with rounded corners as shown in fig. 4; it is also possible to arrange a plurality of dust collecting members of the same or different sizes, and the design range can be expanded, and at the same time, the arrangement can be accomplished with only a small space.

In order to perform centrifugal dust collection, the centrifugal separation unit 7 must be formed in a substantially cylindrical or conical shape. Further, when only 1 centrifugal separating unit is provided, the size of the centrifugal separating unit is necessarily increased to improve the dust collecting performance, but the main body of the cleaner becomes large. In the present invention, by providing a plurality of centrifugal separation units 7, the degree of freedom of structural arrangement is increased, and the body can be miniaturized without lowering the dust collecting performance.

In addition, as shown in fig. 5, since the suction airflow entering from the suction port 9 is substantially equally divided into a plurality of flows, the dust sucked from the suction head can also be substantially equally divided into the respective dust collecting members 5, so that the amount of the dust accumulated in the respective dust collecting members 5 is also substantially the same. Therefore, it is possible to prevent the timing of dust dumping from becoming unknown even when the amount of dust accumulated in each dust collecting member 5 is different.

In addition, since the handle 11 for carrying the dust collecting member 5 is provided on the dust collecting member 5, the carrying of the dust collecting member 5 becomes very easy, the hands can be prevented from being stained when the garbage is dumped, and the degree of convenience in use can be improved.

Further, since the opening 13 is provided substantially above the dust collecting member 5, the dust collecting member cover 12 for covering the opening 13 is provided, and the filter unit 14 for filtering the sucked dust suction airflow is provided inside the dust collecting member cover 12, the fine dust in the dust suction airflow separated from the centrifugal separation unit 7 is accumulated in the vicinity of the filter unit 14. This can improve the problems of performance degradation, safety degradation, and the like caused by adhesion of fine dust to the electric fan 6. Meanwhile, the dust collecting part cover 12 can be opened to easily pour out the dust accumulated in the dust collecting part 5 from the opening 13, and the convenience of use can be improved.

Further, by providing the operation member 15 for fixing or releasing the fixing between the dust collection member cover 12 and the dust collection member 5 near the handle portion 11 of the dust collection member 5, the operation member 15 can be operated easily with the handle portion 11 held as shown in fig. 6, and the dust storage unit cover 12 can be opened. Thus, the user does not need to perform a hand-over operation or the like when pouring dust, and the usability can be improved.

In addition, when the dust collecting part cover 12 is opened, the operation direction of the operation part 15 is the direction of grasping the handle part 11, so the dust collecting part 5 can be firmly grasped, and the problem that the dust collecting part 5 falls can be prevented.

As shown in fig. 2 and 7, dust which is not separated in the centrifugal separation unit 7 and which adheres to the filter unit 14 when entering the interior of the dust collection part cover 12 and degrades the performance thereof is collected by the pre-filter 16. Thus, the phenomenon that dust adheres to the filter 14 and degrades the performance thereof can be suppressed. Further, by forming the pre-filter 16 in a substantially cylindrical shape, the area of the pre-filter 16 can be increased, and the performance degradation caused by the accumulation of dust in the pre-filter 16 can be suppressed.

As shown in fig. 2 and 7, a disk-shaped protective member 17 is provided below the pre-filter 16, and the surface of the disk-shaped protective member 17 is substantially perpendicular to the central axis of the centrifugal separation unit 7 in the vertical direction. After the whirling airflow in the centrifugal separation unit 7 is carried to the dust storage unit 8 at the lower portion, the whirling airflow is reflected by the bottom surface of the dust storage unit 8, and the dust is blown upward again. However, at this time, the protective member 17 receives the ascending air flow in front of the centrifugal separation unit 7 and pushes the whirling air flow back to the lower portion again, so that the dust returns to the inside of the centrifugal separation unit 7, and therefore, it is possible to prevent a problem that the newly sucked dust is prevented from being separated.

In addition, another structure of the protective member 17 is shown in fig. 8. A disk-shaped protective member 17 is provided below the pre-filter 16, and the surface of the disk-shaped protective member 17 is substantially perpendicular to the central axis of the centrifugal separation unit 7 in the vertical direction. After the dust is sent to the dust storage unit 8 at the lower part, the whirling airflow in the centrifugal separation unit 7 is reflected by the bottom surface of the dust storage unit 8, and the dust is blown upward again. However, at this time, the protective member 17 blocks the ascending air flow in front of the centrifugal separation unit 7 and pushes the whirling air flow back to the lower portion again. In the configuration shown in fig. 8, the surface of the protective member 17 is substantially perpendicular to the central axis of the dust storage unit 8 in the vertical direction, and the rotating airflow rising along the dust storage unit 8 can be reliably blocked by the substantially perpendicular surface, so that the dust returns to the inside of the centrifugal separation unit 7, and the problem of preventing the newly sucked dust from being separated can be prevented.

As shown in fig. 9 and 10, since the outer peripheral wall of the dust storage unit 8 is provided with the discharge port 18 for discharging the dust and the discharge port cover 19 for covering the discharge port 18, the dust can be easily discharged from the discharge port 18 at the lower portion of the dust collecting member 5 by opening the discharge port cover 19, and the usability can be improved.

Further, by providing the discharge port 18 on the rear surface of the dust storage unit 8, the dust is not dropped downward even if the discharge port cover 19 is opened, and the user can pour out the dust in an appropriate amount and at an appropriate speed according to his or her own intention. Thus, the problem that dust immediately falls out and surrounding dust is scattered while the discharge port cover 19 is opened can be solved, and the convenience of use can be improved.

Although the embodiment 1 described above is a horizontal type vacuum cleaner in which the dust collecting member 5 is disposed vertically, the same effects can be achieved when the present invention is applied to a vertical type vacuum cleaner.

Next, an electric vacuum cleaner in embodiment 2 of the present invention will be described with reference to FIGS. 11 to 17. The same components as those in embodiment 1 are denoted by the same reference numerals, and description thereof will be omitted.

Fig. 11 and 13 are partial sectional views of the cleaner main body of the electric cleaner according to the present embodiment, and fig. 12 and 14 to 17 are partial sectional views of the dust collecting member mounted on the cleaner main body.

In the above-described embodiment 1, the handle portion is provided at the rear portion of the dust collection member 5. In the present embodiment, the handle portion is provided at the upper portion of the dust collecting member 5.

In fig. 11 to 17, reference numeral 4 denotes a cleaner main body in which an electric fan 6 for sucking dust is provided, 5 denotes a dust collecting member which communicates with a suction head (not shown) for sucking dust and is detachably attached to the cleaner main body 4, 30 denotes a handle portion, the handle portion 30 is positioned substantially above the dust collecting member 5, and a rotation shaft 31 is provided at one end, a stopper 32 for restricting a rotation angle is provided at the other end, and 33 denotes a fastening member for holding the dust collecting member 5 in the cleaner main body 4.

In the non-rotated state of the grip portion 30, the grip protrusions 34 provided on the grip portion 30 abut against the fastening member top surface 35 provided on the fastening member 33, preventing the movement of the fastening member 33. At this time, the claw 36 provided on the fastening member 33 is hooked on the fastening member fixing member 37 provided on the cleaner main body 4, and the dust collecting member 5 and the cleaner main body 4 are held in a fixed state.

When the handle portion 30 is rotated, the handle protrusion portion 34 is disengaged from the fastening member top surface 35, the fastening member 33 is rotated around the central axis 38 located at the substantially central portion of the fastening member 33, the claw portion 36 provided in the fastening member 33 is disengaged from the fastening member fixing member 37 provided in the cleaner main body 4, and the fixation between the dust collection member 5 and the cleaner main body 4 is released.

In addition, since the length of the fastening member 33 is set to be larger than the length from the center axis 38 to the claw portion 36, elastic deformation at least over the step on the fastening member fixing 37 can be generated even in a state where itself is fixed.

In addition, reference numeral 39 is a handle part holder which holds the handle part 30 in a non-rotated state, and prevents the handle part 30 from being rotated arbitrarily due to an unexpected shock or vibration.

As shown in fig. 16 and 17, when the grip portion 30 is not rotated, the projection 40 provided inside the grip portion 30 is inserted into the recess 41 provided on the fastening member, preventing the fastening member 33 from being moved. The same effect can be obtained even if the concave-convex relationship is reversed. When the handle 30 is rotated, the protrusion 42 provided on the inner side of the handle 30 contacts the end 43 of the fastening member 33 to forcibly rotate the fastening member 33, thereby releasing the fixation between the dust collecting member 5 and the cleaner main body 4.

The dust collecting part 5 is provided with a box-shaped part 44 covering the fastening part 33, and the cleaner main body 4 is provided with a main body box-shaped part 45 which is positioned inside the box-shaped part 44 and holds the box-shaped part 44 in the mounted state of the dust collecting part 5. The box-shaped member 44 is configured to contact the fastening member 33 with the main body box-shaped member 45 before contacting with the fastening member fixing member 37 of the cleaner main body 4.

The operation and effects in the above-described constitution are described below.

In a normal state, that is, a state in which the grip portion 30 is not rotated, as shown in fig. 11 and 12, by bringing the grip protrusions 34 extended from the grip portion 30 into contact with the fastening member top surface 35 provided on the fastening member 33, the movement of the fastening member 33 is prevented; and the claw part 36 arranged on the fastening part 33 and the fastening part fixing part 37 arranged on the cleaner main body 4 are mutually fixed, so that the dust collecting part 5 and the cleaner main body 4 are fixed.

When dust accumulated in the dust collecting member 5 is discarded, the handle portion 30 can be lifted upward. At this time, the handle portion 30 is rotated about the rotation shaft 31 as shown in fig. 13. When the handle portion 30 is rotated, the handle protrusion portion 34 is separated from the fastening part top surface 35 as shown in fig. 14, the fastening part 33 is rotated about a central axis 38 located at a substantially central portion of the fastening part 33, the claw portion 36 provided on the fastening part 33 is separated from the fastening part fixing member 37 provided on the cleaner main body 4, and the fixing between the dust collection part 5 and the cleaner main body 4 is released, so that the dust collection part 5 can be detached from the cleaner main body 4.

That is, two operations of releasing the fixing between the dust collection part 5 and the cleaner main body 4 and pulling out the dust collection part 5 can be achieved by only one action. In addition, since the stopper 32 blocks the handle portion 30 from further rotation, the tensile strength is greatly improved as compared with a shape in which the handle portion is straightened and then lifted up, so that the electric vacuum cleaner is not easily damaged, and high reliability is achieved.

In addition, since the length of the fastening member 33 is set to be greater than the length from the central axis 38 to the claw portion 36, even if the dust collection part 5 is mounted to the cleaner main body 4 in a state where the handle portion 30 is not rotated, that is, in a state where the fastening member 33 is fixed, the fastening member 33 can go over the step of the fastening member fixing member 37 on the cleaner main body 4 as shown in fig. 15 by its own elastic deformation, so that the claw portion 36 can be hooked to the fastening member fixing member 37 without being broken, thereby enabling the electric cleaner to achieve high reliability.

In addition, by providing the handle part holder 39 for holding the handle part 30 in a non-rotated state as shown in fig. 11, the handle part 30 is not rotated freely even when the cleaner main body 4 is subjected to unexpected impact and vibration. Thus, the fastening of the fastening member 33 is released, and the dust collecting member 5 is detached from the cleaner main body 4, thereby preventing the dust from scattering and damaging the dust collecting member 5.

In addition, as shown in fig. 12, since the fastening member 33 is fixed only at a point where the grip portion 30 is in a non-rotated state, that is, the grip convex portion 34 provided on the grip portion 30 comes into contact with the fastening member top surface 35 on the fastening member 33, the fastening member 33 can be released from the fixing by slightly rotating the grip portion 30. Thus, locking/unlocking of the dust collecting part 5 can be performed more easily and more reliably, and the ease of use can be improved.

In addition, when the grip portion 30 is not rotated, the movement of the fastening member 33 can be prevented by inserting the projection 40 provided inside the grip portion 30 into the recess 41 provided on the fastening member 33 as shown in fig. 16. Therefore, if the dust collecting part 5 is detached without rotating the handle part 30, the claw part 36 of the fastening part 33 tends to slip out from the fastening part fixing part 37 on the main body 4 of the vacuum cleaner, but the fastening part 33 cannot rotate because the concave part 41 clamps the two side surfaces of the convex part 40. Therefore, the fixation between the dust collecting part 5 and the cleaner main body 4 can be maintained, thereby preventing the dust collecting part 5 from falling off when the dust collecting part receives unexpected impact and vibration, and improving the use convenience.

In addition, the same effect can be achieved by interchanging the concave portions and the convex portions at these positions.

In addition, when the handle portion 30 is rotated, the protrusion 42 provided substantially on the inner side surface of the handle portion 30 comes into contact with the end 43 of the fastening member 33 as shown in fig. 17 to forcibly rotate the fastening member 33, so that the fixation between the dust collection member 5 and the cleaner main body 4 can be completely released. Thus, the phenomenon of locking when the dust collecting part 5 is detached from the cleaner main body 4 can be prevented, and the use convenience is improved.

Claims (9)

1. An electric vacuum cleaner characterized by comprising:

an electric fan for generating a dust suction airflow; a plurality of centrifugal separation units for separating dust from the suction airflow; an air suction port provided on the air suction upstream side of the centrifugal separation unit;

the dust suction airflow flowing from the air suction opening flows into the plurality of centrifugal separation units respectively after being divided;

this electric cleaner further includes: a dust accumulating unit for accumulating the dust separated from the dust-absorbing airflow by the centrifugal separation unit,

the dust accumulating unit is disposed in an inclined state with respect to the centrifugal separation unit.

2. The electric vacuum cleaner of claim 1, wherein: a flow dividing port for substantially equally dividing the suction airflow into the plurality of centrifugal separation units is provided on the suction downstream side of the suction port.

3. The electric vacuum cleaner of claim 1, wherein: a dust accumulating unit for accumulating dust separated from the suction air flow by the centrifugal separation unit is provided below the centrifugal separation unit.

4. The electric vacuum cleaner of claim 3, wherein: an opening is provided substantially above the centrifugal separation unit, and the opening is covered with a dust collecting member cover having a filter unit.

5. The electric vacuum cleaner of claim 4, wherein: the dust collecting member includes a centrifugal separation unit and a dust storage unit for storing dust separated from the suction airflow by the centrifugal separation unit, and is provided with a handle portion positioned on the dust collecting member and an operation member for fixing and releasing the dust collecting member cover and the dust collecting member, and the operation member can be operated in a state of holding the handle portion.

6. The electric vacuum cleaner of claim 3, wherein: the centrifugal separation unit is provided with a substantially cylindrical pre-filter, and a protective member for suppressing upward dust-flying is provided on the downstream side of the pre-filter.

7. The electric vacuum cleaner of claim 6, wherein: the protection member is disk-shaped and is provided in a state of being opened downward.

8. The electric vacuum cleaner of claim 3, wherein: the dust storage unit is provided with a discharge port for discharging dust and a discharge port cover for covering the discharge port.

9. The electric vacuum cleaner of claim 8, wherein: the discharge port is provided at the rear of the dust accumulating unit.