TW202042730A - Electric vacuum and dust collection device wherein the dust collection device includes an umbrella part having a sliding mechanism - Google Patents

Abstract

According to the present invention, an electric vacuum with a good maintainability is provided. Garbage is compressed inside an umbrella portion. Therefore, the amount of dust associated with the garbage collected by the electric vacuum can be increased. In addition, the electric vacuum can suppress floating backs from a dust collecting part to a dust collection separating part so that a dust separation performance is improved and hairs wrapping around an air suction part can be suppressed. In addition, floating of the garbage can be suppressed when the garbage is discharged. When discharging the garbage, dusts attached to a bypass filter (e.g., filter 2) can also be discharged to save the trouble of cleaning the filter. A dust collecting device of the electric vacuum of the present invention includes an air suction part having a substantially cylindrical shaped first filter on an upper part of an inner tube and an umbrella part defining an opening at a lower part of the inner tube. The air suction part and the umbrella part communicate through a second filter. The umbrella part includes a sliding mechanism that protrudes toward the opening when a bottom cover is opened.

Description

Electric vacuum cleaner and dust collecting device

The present invention relates to an electric vacuum cleaner.

In the past, there have been roughly two types of dust collection methods, such as paper bag type dust collectors that compress the sucked garbage into paper bags, and cyclone type dust collectors that are centrifugally separated by swirling airflow and housed in the dust collector. . The cyclone method has a tendency to increase the troublesome maintenance of the dust collection device compared with the paper bag method due to the generation of swirling airflow.

In Japanese Patent Laid-Open No. 2007-167450 (Patent Document 1), a dust collection unit of an electric vacuum cleaner is described, which has a whirl chamber that separates the sucked dust and suction wind by centrifugal force, the whirl chamber and the electric blower In between, the filter room that filters the suction air that has passed through the swirling chamber and the dust room that accumulates the separated dust, so that the dust chamber side of the filter room or the swirling room becomes a substantially flat surface, and is on the part of the aforementioned plane Equipped with a bypass passage communicating with the dust chamber.

In Japanese Patent Laid-Open No. 2015-204925 (Patent Document 2), an electric vacuum cleaner is described, which has: a vacuum cleaner body having a main body suction port and an electric blower that generates attractive force, and detachable between the main body suction port and the electric blower Free dust collecting device, dust collecting device, including: a substantially cylindrical outer tube forming an outer shell, an inner tube that is approximately concentric with the outer tube in the outer tube, and an openable and closable bottom cover at the lower part of the outer tube. The tube includes: the upper part is a substantially cylindrical frame with a filter, and the lower part is provided with an umbrella part with an opening on the bottom surface. The umbrella part is provided with an inner umbrella part of substantially the same shape and fitted inside, which will extend to the bottom cover The inner umbrella of the tube is formed to be approximately concentric with the inner tube, and the inner umbrella is provided with a sliding mechanism that protrudes in the opening direction when the bottom cover is opened. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] JP 2006-346141 A [Patent Document 2] JP 2015-204925 A

[The problem to be solved by the invention]

The electric vacuum cleaner described in Patent Document 1 aims to provide a handy electric vacuum cleaner that compresses dust in a dust room and prevents dust accumulated in the dust room from floating up and flowing backward in the whirl room and entering the filter room. And reduce the number of dust discharge operations.

The electric vacuum cleaner described in Patent Document 2 aims to provide an electric vacuum cleaner that is easy to use, which can discharge dust without touching the dust in the dust container when disposing of garbage.

However, since the electric vacuum cleaner described in Patent Document 1 has a fixed filter part, there is a problem that the dust attached to the bypass filter is difficult to remove when disposing of garbage.

In addition, in the electric vacuum cleaner described in Patent Document 2, the filter unit is also fixed during garbage disposal, so there is a problem that the dust adhering to the filter is difficult to remove when disposing of garbage.

The present invention solves the above-mentioned problems and provides an electric vacuum cleaner which slides the filter part when the garbage is discarded, and when the garbage is discarded, simultaneously discharges the dust attached to the filter and the accumulated garbage, thereby reducing filtering. The trouble of cleaning the device. [Means to solve the problem]

In order to solve the aforementioned problems, the dust collecting device of the electric vacuum cleaner of the present invention has: a suction part having a substantially cylindrical first filter on the upper part of the inner cylinder, an umbrella part opening at the lower part of the suction part, and the umbrella part , Is communicated through the second filter, and the umbrella part is equipped with a sliding mechanism that protrudes in the opening direction when the bottom cover is opened. [Effects of the invention]

According to the present invention, an electric vacuum cleaner with good maintainability can be provided. Since the garbage is compressed inside the umbrella portion, the amount of dust collected by the garbage can be increased, and the floating back from the dust collecting part to the dust collecting separation part can be suppressed, and the dust separation performance can be improved Lifting or suppressing the curling of hair and the like to the suction part, and because the garbage is compressed inside the umbrella, it prevents the garbage from floating when the garbage is discharged, and also makes it adhere to the bypass filter (filter 2) The dust is discharged, so the trouble of cleaning the filter can be reduced.

Hereinafter, the embodiments of the present invention will be described in detail with appropriate reference to the drawings.

1 is a perspective view of the appearance of an electric vacuum cleaner according to an embodiment of the present invention, and FIG. 2 is a perspective view of the appearance of a state where the dust collecting device 10 and the suction tube 2 are removed from the cleaner body 1. In addition, the up-down direction, the left-right direction, and the front-rear direction are the directions shown in FIG. 1. In addition, the left-right direction is a person viewing from the side of the cleaner body 1.

The electric vacuum cleaner S includes a vacuum cleaner main body 1 and a cyclone-type dust collecting device 10 detachably provided on the vacuum cleaner main body 1.

The cleaner body 1 is connected to a handle grip 3 through a suction tube 2, and the handle grip 3 is connected to a suction mouth body 7 that sucks dust and the like through an extension tube 6. In the dust collecting device 10, dust such as dust sucked from the mouthpiece 7 is collected.

The cleaner body 1 is provided with a pair of left and right wheels 15a for freely moving the cleaner body 1, and a caster 15b located at the front.

The handle grip 3 is provided with an operation part 4 which is responsible for driving and controlling the electric blower 14 (refer to FIG. 4) built in the cleaner body 1 or the electric rotating brush (not shown) provided in the mouthpiece body 7 and the like. The operation part 4 is provided with an operation button 5, which is a button to be pressed (strong, medium, or weak) when the operation is started, or a button to be pressed (off) when the operation is stopped.

<Vacuum cleaner body 1> As shown in Fig. 2, the cleaner body 1 has an outer shell formed by combining an upper shell 1a and a lower shell 1b. The upper shell 1a and the lower shell 1b are formed of a lightweight resin material. At the front part of the lower case 1b, a pipe installation port (main body suction port) 11 is opened, which sucks air containing dust.

3 is a perspective view showing a state where the upper casing 1a of the cleaner body 1 is removed.

The pipe installation port 11 is connected to the introduction pipe 20 (refer to FIG. 3 and FIG. 4), which allows the dust-containing air in the vacuum cleaner body 1 to pass.

In the interior of the cleaner body 1, as shown in FIG. 3, in the motor case 16, the electric blower 14 which generates suction force in the suction port body 7 (refer FIG. 1) is accommodated. In addition, in the air flow path after the dust sucked by the electric blower 14 is removed, a pleated high dust filter 29 for purifying the exhaust gas is arranged.

On the front or front side of the vacuum cleaner body 1 shown in FIG. 2, there is a pipe mounting port 11, and on the left side of the vacuum cleaner body 1, there is a fluidly connected inlet pipe outlet 12 that allows gas to circulate inside through the inlet pipe 20 . The inlet pipe outlet 12 is fluidly connected to allow gas to flow through the dust collector 10 provided in the cleaner body 1. The dust collecting device 10 separates dust from the air containing dust and the like sucked in the mouthpiece 7 and stores the dust.

On the other hand, in the upper part of the front of the cleaner body 1, the air duct inlet 13 of the air duct 21 (refer FIG. 3) communicating with the electric blower 14 is provided. The air duct entrance 13 is a port through which the air after dust has been removed by the dust collector 10 is sucked in. At the air duct entrance 13, a protective filter is provided to suppress the intrusion of foreign matter into the electric blower 14. The protective filter is provided upstream of the grid-shaped filter cover 17 (refer to FIG. 3).

＜Dust Collector 10＞ The dust collector 10 is detachably mounted in a state where the front upper part of the cleaner body 1 is inclined to the rear side as shown by the arrow α1 in FIG. 2 (refer to FIG. 1). When dust accumulates in the outer tube 30, the dust collector 10 moves in the direction opposite to the arrow α1 shown in FIG. 2, and is removed from the cleaner body 1, and after the dust is discharged (emptying the garbage), it moves to the arrow α1 Move in the direction, thereby installing on the cleaner body 1.

The cleaner body 1 is provided with a structure for positioning the dust collecting device 10 or a structure for fixing, so that the dust collecting device 10 can be easily kept airtight when the dust collecting device 10 is mounted on the cleaner body 1.

The concave handle accommodating portion 22 of the vacuum cleaner body 1 shown in FIG. 2 accommodates the handle 35 (refer to FIG. 5) located behind the dust collecting device 10. This is a structure for positioning the dust collector 10 when the dust collector 10 is installed in the cleaner body 1.

In addition, in the lower part of the installation site of the dust collecting device 10 of the vacuum cleaner body 1, there is provided a fitting portion 1a1 to the bottom surface of the bottom cover 31 (refer to FIG. 2) of the dust collecting device 10, which is used for fixing the dust collecting device 10 The structure. In addition, the cover 19 provided on the upper part of the cleaner body 1 constitutes a structure for fixing the upper part of the dust collector 10.

In a state in which the dust collecting device 10 is mounted on the cleaner body 1, the dust collecting device 10 is fluidly connected to the air duct 21. The air duct 21 is adjacent to the introduction pipe 20 adjacent to the pipe attachment port 11 and a protective filter covered with a filter cover 17.

The electric blower 14 is fluidly connected to the upstream side with an air duct 21 through which the air passing through the protective filter after dust removal flows, and on the other hand, is fluidly connected to the high dust filter 29 on the downstream side.

In the electric vacuum cleaner S, the dust collecting device 10 is located on the upstream side of the electric blower 14. In this embodiment, the dust collecting device 10, the air duct 21, and the electric blower 14 are arranged in this order from the upstream side. In addition, the dust collecting device 10 to the electric blower 14 communicates from the upper part of the dust collecting device 10 to the air duct 21 and communicates from the air duct 21 to the upper part of the electric blower 14.

The pulling part 55 of the upper part 33a of the filter case is covered with the cover 19 provided in the cleaner body 1 when the dust collecting device 10 is mounted on the cleaner body 1. This is to avoid the situation where the vacuum cleaner body 1 is grasped and transported so as not to grasp the body grip 18 (refer to FIG. 1) but to the lifting part 55 (refer to FIG. 2) to lift it.

＜Reel 23 and introduction pipe 20＞ The motor housing 16 housing the electric blower 14 is arranged on the right rear side of the vacuum cleaner body 1, as shown in FIG. 3, and on the left side rear is arranged a cord reel 23 for accommodating the power cord 23a. The power cord 23a is used to connect from a socket or the like The electric blower 14 and the like supply electric power. In the present embodiment, regarding the arrangement relationship of the motor housing 16 and the reel 23, although the introduction pipe 20 and the introduction pipe outlet 12 are arranged on the left side, it is not limited to this and may be arranged on the right side.

The reason why the introduction pipe 20 is arranged not in the center of the vacuum cleaner body 1, but on one of the left and right sides, is described in detail later, but the tangential direction from the inner peripheral surface of the outer tube 30 of the dust collector 10 (the cleaner The air sucked in at any one of the left and right sides of the main body 1 flows in, thereby easily generating a swirling flow. Therefore, the rotation direction of the swirling flow varies depending on the arrangement of the introduction pipe 20, but the rotation direction may be clockwise or counterclockwise. For example, when the introduction pipe 20 is arranged on the left side, it becomes a clockwise swirling flow. In this embodiment, the introduction pipe 20 is arranged on the left side, which is a clockwise swirling flow.

In addition, for example, the introduction pipe may be arranged on the left side (or in the center), and the inlet pipe outlet may be set to the right side to have the shape of the introduction pipe with many bending parts, but the pressure loss will increase. Therefore, the introduction pipe 20 is arranged as shown in FIG. 3 to suppress the increase in the pressure loss of the introduction pipe 20 as much as possible, so it has a shape that connects from the pipe installation port 11 to the introduction pipe outlet 12 with as large a radius as possible. In addition, the volume or cross-sectional area in the introduction pipe 20 is formed as large as possible in order to suppress an increase in pressure loss as much as possible.

＜Dust Collector 10＞ Next, the dust collector 10 will be described using FIGS. 4 to 10. FIG. 4 shows a front view of the dust collecting device 10, and FIG. 5 shows a left side view of the dust collecting device 10. As shown in FIG. In addition, FIG. 6 shows a rear view of the dust collection device 10, and FIG. 7 shows an exploded view of the dust collection device 10. In FIG. 8, the attachment and detachment of the dust filter 32 and the filter case 34 mentioned later are shown in figure. Fig. 9 shows a cross-sectional view of A-A shown in Fig. 5. In addition, when the dust collecting device 10 is described separately in FIG. 5 and later, the bottom cover 31 side is directed downward.

The dust collector 10 has a function of separating dust from the air containing dust and the like sucked in the mouthpiece 7 and collecting the dust.

The dust collecting device 10 is roughly formed by an outer tube 30, an inner tube 40, a filter case 33 that houses a dust-catching filter 32 (see FIG. 8), and a bottom cover 31. A filter case 33 is arranged on the upper part of the outer cylinder 30, and a bottom cover 31 is arranged on the lower part. Then, an inner tube 40 concentric with the outer tube 30 is provided in the outer tube 30.

The details are as described later, but the dust collecting device 10 has a space for separating dust and collecting dust between the outer tube 30 and the inner tube 40. That is, in the space formed by the outer tube 30 and the inner tube 40, the dust separation part 10A is provided in the upper part, and the dust storage part 10B is provided in the lower part.

The dust separation unit 10A is a space for separating dust from the air carrying the dust. The dust storage unit 10B is a space for accumulating dust and storing it.

＜Outer cylinder 30＞ The outer cylinder 30, as shown in FIG. 7, has an upper opening 30i and a lower opening 30j having a substantially cylindrical shape with upper and lower openings, and is provided with an inflow pipe 38 on the side surface, which allows air (gas) containing dust from the inlet pipe outlet 12 Inflow. The outer inner surface (in FIG. 6, the inner surface on the left side) of the inflow pipe 38 is formed so as to be connected to the inner peripheral surface 30n of the outer tube 30 in a substantially tangential direction. The inflow pipe 38 is formed with an opening 38a (refer to FIG. 6), which is a connection portion to the introduction pipe 12, and allows air containing dust to flow in from the introduction pipe outlet 12. In addition, the surface facing the opening 38a of the inflow pipe 38 (the opening of the portion where the inflow pipe 38 is connected to the outer tube 30) is provided with a constriction portion 38b, and the opening area is made smaller than the opening portion 38a to increase the flow velocity.

The constriction part 38b of the inflow pipe 38 is formed by the constriction wall 30b along the arc shape of the outer cylinder 30, and is formed by the first longitudinal side 38b1 in the vertical direction, and the upper part is turned outward from the vertical direction and the lower part The second longitudinal side 38b2, the first horizontal side 38b3 in the horizontal direction, and the second horizontal side 38b4 form a substantially trapezoidal opening. The first longitudinal side 38b1 is formed in a substantially tangential direction of the inner peripheral surface 30n of the outer tube 30 as described above. The opening 38a is formed into a shape along the tangent line of the inner peripheral surface 30n of the outer cylinder 30, whereby the air containing dust and the like becomes a swirling airflow along the inner peripheral surface 30n of the outer cylinder 30.

In addition, the second longitudinal side 38b2 is configured to have a structure in which the upper part is inclined outward and the lower part is inclined inwardly, and the constriction part 38b is made into a wider opening at the lower part than the upper part, thereby allowing adjustment to the dust storage part 10B Flowing air volume.

Due to the shape of the constriction portion 38b, the air flowing into the outer tube 30 of the dust collecting device 10 from the inlet port 12 becomes an air flow around the central axis O of the outer tube 30 (the central axis of the dust collecting device 10), The center axis O rotates clockwise in the outer cylinder 30. With this swirling airflow, the dust contained in the air is separated by centrifugal force in the dust separation part 10A.

As shown in FIG. 4, the outer cylinder 30 has a cylindrical shape in the upper part, that is, the dust separation part 10A, and the lower part, that is, in the dust accommodating part 10B, has a stepped shape in which enlarged parts of cylindrical shapes with different diameters are overlapped. The stepped shape of the lower part of the outer cylinder 30 has a larger diameter as the lower part. The step shape of this embodiment includes three enlarged parts. The enlarged portion (step difference) is provided to prevent dust accumulated in the dust storage portion 10B from floating back to the dust separation portion 10A, and the enlarged portion (step difference) is not necessarily required.

In addition, as in the present embodiment, the lower part of the outer cylinder 30 has a stepped shape in which cylindrical shapes with different diameters are overlapped, and the bottom is opened, thereby improving the discharge performance of dust by the dust discharge mechanism described later.

And, as shown in FIG. 5, the dust collector 10 is equipped with the handle 35 for lifting. The upper part of the handle 35 is provided with a garbage disposal button 35a which is pressed when garbage is discharged (discarded). On the lower front side of the outer tube 30, there is a lower opening 30j that rotatably supports a bottom cover 31 described later to open and close the bottom side of the outer tube 30. In the handle 35, there is a lever 80 (refer to FIG. 9) that transmits the force when the garbage dump button 35a is pressed to the sliding clip 81 described later. In order to make the lever 80 and the sliding clip 81 operate smoothly, it is installed The side surface of the outer cylinder 30 with the handle 35 is preferably a substantially vertical (approximately facing up and down direction) surface without a step or an inclined surface. That is, as in the present embodiment, when the outer cylinder 30 is viewed from below, a clamp mechanism described later is installed at a position where the opening 38a side is substantially D-shaped (not shown), whereby the rod 80 can be moved in the vertical direction. Because of the operation, the sliding clip 81 can be operated smoothly, and the dust can be discharged more easily.

＜Filter housing 33＞ The filter case 33 provided on the upper part of the outer cylinder 30 has a cover structure on its upper surface and is divided into a filter case upper part (upper cover) 33a and a filter case lower part 33b. The lower portion 33b of the filter case is formed integrally with the upper portion of the outer cylinder 30, and houses the filter receiving portion 34 that receives the dust-catching filter 32. The details will be described later, but the filter case lower portion 33b and the filter case upper portion 33a are connected by an upper hinge mechanism 70 (see FIG. 8).

＜Dust trap filter＞ The dust-catching filter 32 is folded into a pleated shape (mountain-fold shape) in order to expand the ventilation area, and is adhered to the round frame 32a. The substantially central part of the filter receiving part 34 is an opening, and it fluidly communicates with the inner cylinder 40 mentioned later.

Fig. 8 shows an external view of the dust collecting device 10 with the upper part 33a of the filter case closed (Fig. 8(a)) and an external view of the dust collecting device 10 with the upper part 33a of the filter case opened (Fig. 8(b) )).

As mentioned earlier, the upper part 33a of the filter case is connected by the lower part 33b of the filter case and the upper hinge mechanism 70. The upper hinge mechanism 70 is provided with a shaft 61 behind the upper part 33a of the filter case, so that the shaft 61 located at the upper part 33a of the filter case is inserted into a shaft hole (not shown) located behind the lower part 33b of the filter case. This constitutes. The shaft hole and shaft 61 may have a structure opposite to that of the present embodiment, and the shaft 61 may be provided in the filter case lower portion 33b. In addition, a lock mechanism 37 is provided in front of the filter case lower portion 33b.

The locking mechanism 37 is composed of a claw portion 37a on the upper portion 33a of the filter case and a clamp portion 37b positioned on the lower portion 33b of the filter case. The clamp portion 37b located at the lower portion 33b of the filter case has a shaft portion 37c provided at the approximate center of the side surface, and a claw portion 37a and a spring shaft are provided on the inner side which is invisible from the appearance. The spring shaft is provided in the approximate center of the shaft portion 37c and the lowermost portion of the clamp portion 37b described earlier, and the claw portion 37a is located at the uppermost portion of the clamp portion 37b. The lower portion 33a of the filter case is provided with a spring shaft jig receiving portion for accommodating the previously described jig portion 37b. The spring shaft jig receiving portion is provided with a spring receiving portion on the lower part and a bearing receiving portion on the left and right sides. If the spring and the clamp part 37b are attached to the spring shaft clamp receiving part, the spring will make the upper part of the clamp part 37b incline backward in the state close to a natural length. Then, by pressing the lower part of the clamp part 37b from the front, the upper part of the clamp part 37b is inclined forward. When the filter case upper part 33a is closed from the opened state of the filter case upper part 33a, the claw part 37a located in the filter case upper part 33a abuts against the claw part 37a of the filter case lower part 33b. At this time, the bottom surface of the claw 37a located on the upper part 33a of the filter case is inclined, so it spans the claw part 37a of the lower part 33b of the filter case and is received in the clamp part, so that the upper part 33a of the filter case and the lower part 33b of the filter case are integrated . With this lock mechanism 37, the dust filter 32 can be easily installed.

＜Cover 19＞ The cover 19 is rotatably supported by a rotating shaft portion provided on the upper part of the cleaner body 1, and the rotating shaft portion is provided with a torsion spring (not shown) that urges the cover 19 in the opening direction.

When the lid 19 falls forward from the opened state of FIG. 2 (the state where the lid 19 is erected), the torsion force is applied by the elasticity of the torsion spring, so that the claw 19a provided on the front side of the bottom of the lid 19 , It is engaged with the clamp part 50 of the filter case upper part 33a, and the lid body 19 is brought into a closed state. At this time, the torsion spring exerts an elastic force to restore the original state to the cover 19, and as its reaction force, the dust collecting device 10 can be pressed toward the cleaner body 1 side. With this structure, both the airtight maintenance of the dust collector 10 and the cleaner body 1 and the fixation of the dust collector 10 to the cleaner body 1 can be achieved.

When the lid 19 is closed, if the button 60 (refer to FIG. 1) on the upper portion 33a of the filter case is pressed, the clamp 50 is released, and the lid 19 is lifted by the elastic force of the torsion spring to pull it up Section 55 appears. In the state where the lifting part 55 is present, the user can lift the lifting part 55 to easily remove the dust collecting device 10 from the cleaner body 1 (refer to FIG. 2).

In other words, in the state in which the lid 19 is opened, the dust collecting device 10 is removed from the cleaner body 1 by lifting the lifting portion 55. As described above, when the lid body 19 is closed, the vacuum cleaner body 1 cannot be lifted by the lifting portion 55, and the vacuum cleaner body 1 and the dust collector 10 are prevented from being lifted up. Misoperation.

＜Inner cylinder 40＞ Next, the inner cylinder 40 will be described.

As shown in FIG. 9, the inner tube 40 has a substantially cylindrical shape, and as described above, the dust collecting device 10 is provided substantially concentrically with the outer tube 30.

The inner tube 40 is configured to include an upper inner tube 41 having a suction part 42 provided at the upper part, and an umbrella part 44 provided at the lower part.

＜Upper inner cylinder 41＞ As shown in FIG. 9, the suction portion (first filter portion) 42 of the upper inner cylinder 41 is formed by a lattice-shaped frame (frame). The suction part (first filter part) 42 is a substantially cylindrical part. Although it is a frame (frame) in the vertical direction in this embodiment, it may be a lattice shape having frames (frame) in the vertical and horizontal directions. The suction part 42 is provided with a filter member 42a all over the outer peripheral surface. The filter member 42a is held by the frame (frame) by covering or insert molding. By providing the filter member 42a in the air suction portion 42, the upper inner tube 41 has a filtering function, and the inflow of fine dust into the inner tube 40 is suppressed. The upper inner cylinder 41 has an opening 41b in the upper direction.

In this embodiment, although polyethylene is used for the filter member 42a, it can also be made of metal (such as stainless steel, etc.). It is not a frame (frame) but a plurality of short diameter through holes (holes of about φ2mm can be formed by molds). ) The suction part 42 is also possible. The through hole, unlike the case where the filter member 42a is provided in the frame (frame), is effective for strength or breakage, and has the advantage of not requiring secondary molding. However, if the diameter (opening area) of the through hole is larger than the opening area of the filter member 42a, it is disadvantageous for the inflow of fine dust into the inner tube 40.

＜Umbrella 44＞ The lower part of the inner tube 40 is provided with an umbrella part 44. The umbrella portion 44 is integrally provided in a substantially cylindrical shape concentrically with the upper inner tube 41. The inner side of the upper inner tube 41 and the umbrella part 44 are fluidly connected by the second filter part 85. Although polyethylene is used for the mesh member of the 2nd filter part 85, it may be metal (for example, stainless steel etc.).

＜Sliding mechanism of umbrella 44＞ The umbrella part 44 is a mechanism that slides up and down to assist in discharging garbage when discharging. Next, the sliding mechanism that assists in the discharge of the collected garbage will be described.

As shown in Fig. 9, the sliding mechanism of the umbrella part 44 forms a spring seat on the convex part under the upper inner cylinder 41, so that the inner cylinder (recess 44d) in the center of the umbrella part 44 becomes the receiving part of the compression spring 47. The downward elastic force of the compression spring 47 is transmitted to the umbrella portion 44. Then, the compression spring 47 is in a state covered by the cylindrical body (recessed portion 44d) at the center of the umbrella portion 44. The convex part 49 located under the upper part of the inner cylinder 41 is a substantially similar shape that offsets the shape of the cylinder (concave part 44d) of the umbrella part 44, and has a claw part at the lower part of the convex part 49, which is in the concave part 44d. The upper part also has claws. The compression spring 47 is inserted into the concave portion 44d, and the convex portion 49 located under the upper portion 41 of the inner cylinder is further inserted. At this time, the upper part of the compression spring 47 is covered with a spring seat provided under the convex part 49, so that the claw part straddles the lower part of the convex part 49 and the claw part straddles the upper part of the concave part 44d, thereby making the inner cylinder upper part 41 and The umbrella 44 is integrated. The inner cylinder 40 is constructed with this structure. Therefore, the sliding distance of the umbrella portion 44 is very dependent on the depth of the concave portion 44d of the umbrella portion 44, and the height of the convex portion 49 of the upper inner tube 41 becomes the sliding distance. In this embodiment, although the sliding distance is made the height of the convex part 49, when the height of the dust collector 10, or the height of the inner tube 40, and the umbrella part 44 changes, it will change, so it needs to change suitably.

In this sliding mechanism, the compression spring 47 is in the state closest to the natural length, so that the umbrella portion 44 is the most popped out of the outer tube 30 (see FIG. 10). As shown in FIG. 9, if the bottom cover 31 is closed The compression spring 47 will be in a compressed state. Therefore, when the lock of the bottom cover 31 described later is released when the garbage is taken out, as shown in FIG. 10, the compression spring 47 will be in an extended state close to the natural length, and the umbrella portion 44 will be ejected downward to release the inside of the umbrella portion 44. The dust is pushed out into the outer space. Thereby, a convenient electric vacuum cleaner can be provided, which can easily discharge dust in the device.

＜Cover 31＞ As shown in FIG. 10, the bottom cover 31 is formed in a deep disk shape with the central part protruding downward, and has a recessed part 31b which becomes a recessed part on the opposite side of the part protruding from the central part. The bottom cover 31 is formed into a disc shape to give the structure a curvature and increase the strength. In addition, the concave portion 31b of the bottom cover 31 is larger than the spherical radius (curvature) of the spherical shape of the bottom surface 46t of the cylinder 46, and the depth of the concave portion 31b is when the bottom cover 31 is in the open state (for the outer cylinder 30 (Refer to Fig. 10) There is no horizontal surface in the recessed portion 31b. In other words, the depth of the recessed portion 31b is as shallow as possible. This is to prevent dust from remaining in the recessed portion 31b when garbage is discharged.

In this embodiment, the recessed portion 31b and the bottom cover 31 are formed separately, and materials such as POM (polyoxymethylene: polyoxymethylene) are used in order to reduce the wear of the members caused by the friction with the cylinder 46 when the bottom cover 31 is opened and closed. , But can also be integrally formed with the bottom cover 31.

The bottom cover 31 has a rotating shaft 31a on the outer periphery, and a clip catch 31d at a position facing the rotating shaft 31a. The rotating shaft 31a is rotatably attached to the hinge cover 75 of the lower hinge mechanism 71. The lower hinge mechanism 71 is to mount the rotating shaft 31a located on the bottom cover 31 to the hinge cover 75, and fix the hinge cover 75 to the hinge cover fixing part provided on the lower side of the outer cylinder 30 with screws or the like. 30f structure. The opening and closing of the bottom cover 31 will be described later, but the bottom cover 31 is provided with a torsion spring on the rotating shaft 31a, whereby the bottom cover 31 is pushed in the opened state (see FIG. 10).

<The role of garbage collection in the dust collector 10> Next, the garbage collection function in the dust collector 10 will be described.

When the user presses the operation button 5 provided in the operation unit 4 to start the operation, the electric blower 14 operates to suck in air from the mouthpiece 7 (refer to FIG. 1). As described above, the air containing dust and the like sucked in through the suction nozzle body 7 (refer to FIG. 1) flows from the pipe mounting port 11 into the inlet pipe 20 in the cleaner body 1 as shown in FIG. 3, and passes through the inlet pipe 20. The introduction pipe outlet 12 reaches the dust collector 10.

The air containing dust and the like reaching the dust collecting device 10 flows into the dust collecting device 10 through the opening 38a shown in FIG. 7. At this time, the constriction wall 30b provided on the downstream side of the opening 38a flows in the tangential direction toward the inner peripheral surface of the outer cylinder 30 while increasing the flow velocity.

FIG. 9 shows a cross-sectional view A-A of FIG. 4 showing the air flow in the dust collecting device 10.

The air containing dust and the like flowing in the tangential direction of the outer cylinder 30 in the dust collecting device 10 becomes a swirling flow as shown by the arrow γ1 in FIG. 12, and goes around the upper part of the outer cylinder 30 along the inner surface of the outer cylinder 30 The inner cylinder 41 turns back and forth. Thereby, centrifugal force acts on the dust, and the dust is separated from the air. Garbage such as dust is heavier than air, and therefore falls along the inner peripheral surface of the outer cylinder 30 as indicated by the arrow γ2. That is, in the upper part of the dust collecting part 10, that is, the dust separating part 10A, dust is separated from the air. The air from which the dust has been separated often flows into the inner tube 40 through the air inlet 42 provided in the upper inner tube 41 (arrow γ3).

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

Then, the inner cylinder 41 and the inner side of the umbrella portion 44 are fluidly communicated with each other through the second filter portion 85, so light dust 86 such as cotton dust or hair is directed from the inner side of the umbrella portion 44 The flow of the inner cylinder 41 (arrow γ5) is conveyed, and the downstream side of the second filter section 85 (inside the inner cylinder 41) becomes a negative pressure (pressure lower than atmospheric pressure), so the second filter section 85 Compression and accumulation on the upstream side. On the other hand, heavy dust such as small stones is left near the bottom of the dust collecting part 10B. Then, if the electric vacuum cleaner 1 is used continuously, more lighter dust 86 is compressed, and the dust accumulates in a doughnut shape.

Thereby, the amount of garbage accumulated in the dust collecting part 10B can be increased.

In addition, it is possible to prevent the lighter dust temporarily stored in the dust collecting part 10B from floating back to the dust separating part 10A.

Then, the flow (arrow γ3) flowing into the inner tube 40 from the suction port 42 merges with the flow (arrow γ5) from the inner side of the umbrella portion 44 toward the inner tube 41, passes through the dust filter 32, and flows into The air duct entrance 13 of the cleaner body 1 (refer to FIG. 3).

Then, when the dust reaches the established garbage disposal baseline 90, garbage disposal is performed.

＜Actions when putting out garbage＞ 9 shows the A-A cross-sectional view of FIG. 4 with the bottom cover 31 closed, and FIG. 10 shows the A-A cross-sectional view shown in FIG. 4 when dust is discharged (the bottom cover 31 is opened).

Explain the actions when taking out garbage. The bottom cover 31 is released by pressing the garbage dump button 35a provided on the upper part of the handle 35, which is provided in the dust collecting device 10. The bottom cover 31 is provided with a rotating shaft 31a rotatably supporting the cleaner body 1 on the opposite side of the handle 35, and on the other hand, an opening and closing mechanism of the bottom cover 31 is provided on the handle 35 side.

If the trash dump button 35a provided on the upper part of the handle 35 is pressed, the lever 80 in the handle 35 moves downward to release the claw portion 83 of the sliding clip 81, and the bottom cover 31 becomes an opening.

The rotating shaft 31a of the bottom cover 31 is provided with a torsion spring that urges the bottom cover 31 in the opening direction, and the bottom cover 21 is opened by the elastic force of the torsion spring by releasing the claw portion 83. If the trash dump button 35a is released, the spring (not shown) provided on the sliding clip 81 will return to its natural length, so the lever 80 returns to the top, and the sliding clip 81 returns to the position before the trash dump button 35a was pressed. position.

While opening the bottom cover 31, the umbrella portion 44 is ejected downward by the compression spring 47. Thereby, the position of the umbrella portion 44 of a part of the inner tube 40 in the opened state of the bottom cover 31 is located closer to the opening below the outer tube 30 than the position in the closed state of the bottom cover 31 (refer to FIG. 10). Therefore, the umbrella portion 44 is ejected downward, and the dust 86 accumulated inside the umbrella portion 44 is discharged to the external space. At this time, the lighter dust 86 is compressed, and the dust accumulates in a doughnut shape, so the dust can be suppressed from floating.

In addition, the second filter unit 85 also operates at the same time, so the dust adhering to the second filter unit 85 is also removed at the same time, so the cleaning of the second filter unit 85 becomes easy.

After discharging the garbage, when the bottom cover 31 is closed, the bottom surface 46t of the cylinder 46 ejected downward is brought into contact with the recessed portion 31b provided in the center of the bottom cover 31, and the umbrella portion 44 is pushed upward.

Since the bottom surface 46t of the cylinder 46 and the recessed portion 31b are in contact with each other with a spherical curvature, even if the angle of the bottom cover 31 changes due to the action of closing the bottom cover 31, the bottom surface 47 of the cylinder 46 and the recessed portion The contact area of 31b is kept constant, and since the curved surfaces are brought into contact with each other and force is always applied to the vertical direction, the umbrella portion 44 can be smoothly retracted.

Then, if the bottom cover 31 is closed to a substantially horizontal state, the clip buckle 31d will come into contact with the claw 83. The sliding clip 81 moves the spring provided on the sliding clip 81 in the shortening direction, and crosses the clip buckle at the claw 83 At the time of 31d, the spring rebounds, and the bottom cover 31 is locked while keeping the airtight state.

Also, as shown in the umbrella portion 88 of FIG. 11, the umbrella portion is made into an inverted cone shape that expands downward (the bottom cover 31 side), thereby making it easier to discharge the dust 86 accumulated inside the umbrella portion to the outside. space.

And, as shown in FIG. 12, the upper inner cylinder 41 and the umbrella portion 44 are integrated, and when the garbage is discharged, the second filter portion 85 and the cylinder 46 are ejected downward, thereby making it easier to make The dust 86 accumulated inside the umbrella is discharged to the external space.

<The flow path of air containing dust sucked into the vacuum cleaner body 1> In the state in which the dust collecting device 10 is installed in the cleaner body 1, a series of flow paths are formed from the pipe installation port 11 to the high dust filter 29.

In the vacuum cleaner body 1 of the electric vacuum cleaner S, the air containing dust and the like sucked from the suction mouth body 7 into the vacuum cleaner body 1 flows from the pipe mounting port 11 into the introduction pipe 20 in the vacuum cleaner body 1, and passes through the introduction pipe 20. The introduction pipe outlet 12 reaches the dust collector 10. The air containing dust and the like that has entered the dust collector 10 becomes an airflow that revolves around the inner tube 40 (arrow γ1 in FIG. 9). The air and dust are separated by the centrifugal force generated by the airflow, and the air is sucked into the inner cylinder 40, and a part of the airflow (arrow γ2 in FIG. 9) flows to the lower part of the dust collector 10. The dust falls along the inner surface of the outer tube 30 by this airflow, and goes to the lower part of the dust collector 10.

The airflow (arrow γ2 in FIG. 9) toward the lower part of the dust collector 10 rises inside the cylindrical umbrella portion 44 (arrow γ4 in FIG. 9), passes through the second filter portion 85, and is sucked into the inner cylinder Within 40. In the inner cylinder 40, the air containing fine dust that has not been centrifugally separated through the filter member 42a flows (arrow γ3 in FIG. 9) and merges, and the dust filter 32 provided in the dust collector 10 removes the fine dust. The dust. Then, the air from which the dust has been removed is sucked by the electric blower 14 through the air duct 21. Then, the air sucked by the electric blower 14 passes through the high dust filter 29 to remove remaining fine dust and the like, and is discharged to the outside from the discharge port (not shown) at the lower rear of the cleaner body 1.

Here, the high dust filter 29 removes fine dust that cannot be captured by the dust filter 32 or the wear debris of the carbon brush (not shown) of the electric blower 14 from the air after the dust is removed. It becomes air containing almost no dust and is discharged to the outside of the cleaner body 1.

In addition, although the details are omitted, fillers (not shown) are provided at the connecting portions (contact portions) of the components near the flow path of the air sucked by the cleaner body 1 to maintain airtightness during operation.

As described above, according to the present invention, it is possible to provide an electric vacuum cleaner with good maintainability. Since garbage is compressed inside the umbrella, the amount of garbage collected can be increased, and the return from the dust collecting part to the dust collecting separation part can be suppressed. Floating, which improves the dust separation performance and suppresses the winding of hair etc. to the suction part, and because the trash is compressed inside the umbrella, it prevents the trash from floating when the trash is discharged, and also makes the trash adhere to the The dust passing through the filter (filter 2) is discharged, so the trouble of cleaning the filter can be reduced.

In addition, the present invention is not limited to the aforementioned embodiments, and includes various embodiments. For example, the above-mentioned embodiments are used to explain the present inventors easily, and are not necessarily limited to all the structures described. For example, a part of the structure described may be included.

1: Vacuum cleaner body 1a: Upper shell 1b: lower shell 10: Dust collection device 10A: Dust separation unit 10B: Dust Containment Department 11: Pipe installation port (main body suction port) 12: Introductory pipe outlet 13: Air duct entrance 14: Electric blower 19: Lid 20: Introductory tube 21: Wind tunnel 30: Outer cylinder 31: bottom cover 32: Dust filter 33: filter housing 34: Filter receiving part 35: handle 37: Locking mechanism 38: Inflow pipe 39: opening 40: inner cylinder 41: Upper inner cylinder (frame) 42: suction part 44: Umbrella 46: cylinder 46t: bottom surface 55: Lifting Department 75: Hinge cover 80: Rod 81: sliding clip 83: Claw γ1~γ6: Flow of air O: Central axis S: Electric vacuum cleaner

Fig. 1 is a perspective view showing the appearance of an electric vacuum cleaner according to an embodiment of the present invention. [Fig. 2] is an external perspective view showing the state of removing the dust collecting device and the suction tube from the vacuum cleaner body. [Fig. 3] is a perspective view showing a state where the upper case of the vacuum cleaner body is removed. [Fig. 4] is a front view showing the dust collector. [Fig. 5] is a left side view showing the dust collector. [Fig. 6] is a rear view showing the dust collector. [Fig. 7] is an exploded view showing the dust collector. [Fig. 8] (a) is an external view showing the dust collector, and (b) is an external view showing a state in which the upper part of the filter case of (a) is opened. [Fig. 9] A cross-sectional view of Fig. 5 with the bottom cover closed. [Fig. 10] A cross-sectional view of Fig. 5 along A-A with the bottom cover opened. [Fig. 11] A cross-sectional view of Fig. 5 with the bottom cover closed. [Fig. 12] A cross-sectional view of Fig. 5 along A-A with the bottom cover opened.

31: bottom cover

35a: Trash button

40: inner cylinder

41: Upper inner cylinder (frame)

41b: opening

42: suction part

42a: filter element

44: Umbrella

46: cylinder

47: Compression spring

49: Convex

75: Hinge cover

80: Rod

81: sliding clip

83: Claw

85: The second filter part

86: Dust

γ1~γ6: Flow of air

Claims (3)

An electric vacuum cleaner and a dust collecting device thereof, characterized in that it has: a vacuum cleaner body provided with an electric blower, and a dust collecting device that can be detached and detached from the vacuum cleaner body. The dust collecting device includes: an outer cylinder and a dust collecting device arranged in the outer cylinder. An inner tube, a bottom cover for discharging the collected dust, the inner tube has: an air suction part having a substantially cylindrical first filter at the upper part, and an umbrella opening toward the cover part at the lower part The suction portion and the umbrella portion communicate with each other through a second filter, and the umbrella portion includes a sliding mechanism that protrudes toward the opening direction when the bottom cover is opened. The electric vacuum cleaner and the dust collecting device thereof according to claim 1, wherein the umbrella portion has an inverted tapered shape expanded on the bottom cover side. An electric vacuum cleaner and a dust collecting device thereof, characterized in that it has: a vacuum cleaner body provided with an electric blower, and a dust collecting device that can be detached and detached from the vacuum cleaner body. The dust collecting device includes: an outer cylinder and a dust collecting device arranged in the outer cylinder. An inner tube, a bottom cover for discharging the collected dust, the inner tube has: an air suction part having a substantially cylindrical first filter at the upper part, and an umbrella opening toward the cover part at the lower part The suction portion and the umbrella portion communicate with each other through a second filter, and the second filter portion includes a sliding mechanism that protrudes in the opening direction when the bottom cover is opened.

Images