JP2017000580A - Electric vacuum cleaner - Google Patents

Abstract

A vacuum cleaner having a dust collector that suppresses deterioration of dust separation performance and increase of fluid sound due to disturbance of swirling flow is provided. A vacuum cleaner main body S in which an inlet pipe outlet 12 through which gas sucked at a main body inlet 11 is guided is provided, and a dust collector 10 that is detachably attached to the vacuum cleaner main body S. The dust collector 10 includes an outer cylinder 30 and an inner cylinder 40 in the outer cylinder 30, and the outer cylinder 30 includes an inflow pipe 38 that connects the introduction pipe outlet 12 and the inside of the outer cylinder 30. A throttle 38d is provided downstream of 38, and a rectifier is provided in the throttle 38d. [Selection] Figure 7

Description

  The present invention relates to a vacuum cleaner.

  Conventionally, a cyclone type electric vacuum cleaner provided with a substantially cylindrical dust collecting container, an inflow pipe that generates a swirling flow along the inner periphery of the dust collecting container, and a rectifier that rectifies air downstream of the inflow pipe There is a machine.

  Patent Document 1 discloses the electric vacuum cleaner. Specifically, the dust separating and collecting container includes a bottomed cylindrical container body, a filtering part having a substantially concentric cylindrical shape and housed in the container body, and the container body and the filtering part from the opening edge of the suction pipe. And a rectifying plate extended toward the gap (FIG. 6 of Patent Document 1).

JP 2012-40149 A (FIG. 6 etc.)

The vacuum cleaner described in Patent Document 1 extends the rectifying plate toward the gap between the container body and the filtering unit, and the rectifying effect of the rectifying plate facilitates the flow of air through the filtering unit, The spread of the generated turbulent flow area is suppressed, and the noise generated in the turbulent flow area is suppressed. However, no countermeasure is taken against the turbulence of the swirling flow caused by the vortex of the flow impinging on the current plate.
For this reason, there is a possibility that the separation performance for separating the sucked air and dust is deteriorated, and noise is increased due to an increase in fluid sound due to the turbulent flow disturbance.

  In view of the above situation, an object of the present invention is to provide a vacuum cleaner having a dust collecting device that suppresses deterioration of dust separation performance and increase in fluid sound due to disturbance of swirling flow.

  In order to solve the above-described problems, an electric vacuum cleaner according to the present invention includes a vacuum cleaner body in which an introduction pipe outlet through which gas sucked through the main body intake port is guided and a detachable attachment to the vacuum cleaner body. A dust device, and the dust collector includes an outer cylinder and an inner cylinder in the outer cylinder, and the outer cylinder has an inflow pipe connecting the inlet pipe outlet and the inside of the outer cylinder. And a throttle part is provided downstream of the inflow pipe, and a rectifying part is provided in the throttle part.

  ADVANTAGE OF THE INVENTION According to this invention, the vacuum cleaner which has a dust collector which suppresses the increase in the fluid sound by deterioration of dust separation performance and disturbance of a swirl flow can be provided.

The external appearance perspective view which shows the vacuum cleaner of embodiment which concerns on this invention. The external appearance perspective view which shows the state which removed the dust collector and the suction hose from the cleaner body. The perspective view which shows the state which removed the upper case of the cleaner body. The center sectional view showing the cleaner body which looked at the cleaner body from the side. The front view which shows a dust collector. The left view which shows a dust collector. The rear view which shows a dust collector. The exploded view which shows a dust collector. (A) is an external view which shows a dust collector, (b) is an external view which shows the state which opened the filter case upper part of (a). (A) is an external view which shows the state which removed the dust collection filter from FIG.9 (b), (b) is an external view which shows the state which removed the filter receiving part from (a). (A) is BB sectional drawing of FIG. 6, (b) is the C section enlarged view of Fig.11 (a). The exploded view of an inner cylinder. BB sectional drawing of FIG. 6 showing the airflow in a dust collector. FIG. 6 is a cross-sectional view taken along the line AA in FIG. 5 with the bottom lid closed. FIG. 6 is a cross-sectional view taken along the line AA in FIG. (A) is component drawing which shows the rectification | straightening part provided in the throttle wall with which the inflow pipe of a dust collector is equipped, (b) is sectional drawing of (a). (A) is a component figure which shows the rectification | straightening part of another shape provided in the throttle wall with which the inflow pipe of a dust collector is equipped, (b) is sectional drawing of (a). The component figure which shows the rectification | straightening part of another shape provided in the throttle wall with which the inflow pipe of a dust collector is equipped. The component figure which shows the rectification | straightening part of another shape provided in the throttle wall with which the inflow pipe of a dust collector is equipped. (A) is the center sectional view shown in Drawing 10 (b), (b) is the D section enlarged drawing of Drawing 20 (a). (A) is a center sectional view showing the state where filter case upper part 33a is closed about half from FIG. 20 (a), and (b) is an enlarged view of portion E in FIG. 21 (a).

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
FIG. 1 shows an external perspective view of a vacuum cleaner according to an embodiment of the present invention, and FIG. 2 shows an external perspective view of the vacuum cleaner body 1 with the dust collecting device 10 and the suction hose 2 removed. Note that the vertical direction, the horizontal direction, and the front-back direction are the directions shown in FIG. The left-right direction is viewed from the rear of the cleaner body 1.

The vacuum cleaner S includes a vacuum cleaner main body 1 and a cyclone dust collector 10 that is detachably provided on the vacuum cleaner main body 1.
The vacuum cleaner main body 1 is connected to a hand handle 3 through a suction hose 2, and the hand handle 3 is connected to a suction body 7 that sucks dust and the like through an extension pipe 6. The dust collector 10 collects dust such as dust sucked from the suction body 7.

  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 at the front. The rear portion is provided with one roller 15c so that the rear portion is not damaged when the cleaner body 1 is tilted rearward (see FIG. 4).

  The hand handle 3 includes an operation unit 4 that performs drive control such as an electric blower 14 (see FIG. 4) built in the cleaner body 1 and an electric rotating brush (not shown) provided on the suction body 7. Yes. The operation unit 4 is provided with operation buttons 5 such as a button to be pressed (strong / medium / weak) when starting driving, and a button (cut) to be pressed when stopping driving.

<Vacuum cleaner body 1>
As shown in FIG. 2, the vacuum cleaner main body 1 has an upper shell 1a and a lower case 1b combined to form an outer shell. The upper case 1a and the lower case 1b are formed of a lightweight resin material. A hose attachment port (main body intake port) 11 through which air containing dust is sucked is opened at the front portion of the lower case 1b.

  FIG. 3 shows a perspective view of the cleaner body 1 with the upper case 1a removed, and FIG. 4 shows a central sectional view of the cleaner body 1 as seen from the side.

  The hose attachment port 11 is connected to an introduction pipe 20 (see FIGS. 3 and 4) through which air containing dust in the cleaner body 1 passes.

  As shown in FIG. 4, an electric blower 14 that generates a suction force at the suction body 7 (see FIG. 1) is housed inside the cleaner body 1, as shown in FIG. 4. In addition, a pleated high dust collection filter 29 for cleaning the exhaust is disposed in the air flow path after the dust sucked by the electric blower 14 is removed.

  The front side, which is the front of the cleaner body 1 shown in FIG. 2, is provided with a hose attachment port 11, and the left side of the cleaner body 1 is fluidized so that gas flows through the introduction pipe 20. An inlet pipe outlet 12 to be connected is provided. The inlet pipe outlet 12 is fluidly connected so that gas flows to the dust collector 10 set in the cleaner body 1. The dust collector 10 separates dust from the air including dust sucked by the suction body 7 and accommodates the dust.

  On the other hand, a duct entrance 13 to a duct 21 (see FIG. 3) communicating with the electric blower 14 is provided in the upper front portion of the cleaner body 1. The duct inlet 13 is an inlet into which air after the dust is removed by the dust collector 10 is sucked. The duct inlet 13 is provided with a protective filter (not shown) in order to suppress the entry of foreign matter into the electric blower 14. The protective filter is provided on a grid-like filter cover 17 (see FIG. 2).

<Dust collector 10>
As shown by an arrow α1 in FIG. 2, the dust collector 10 is detachably attached in a state where the front upper portion of the cleaner body 1 is inclined rearward (see FIG. 4). The dust collector 10 is removed from the cleaner body 1 by moving it in the opposite direction to the arrow α1 shown in FIG. 2 when the dust accumulates in the outer cylinder 30, and after removing the dust (disposal of dust), the direction of the arrow α1. It is attached to the vacuum cleaner main body 1 by moving to.

The vacuum cleaner body 1 has a structure for positioning the dust collector 10 and a structure for fixing the dust collector 10 so that the dust collector 10 can be easily kept airtight when attached to the vacuum cleaner body 1. .
A handle 35 provided at the rear of the dust collector 10 is stored in the concave handle storage portion 22 in the cleaner body 1 shown in FIG. 2 (see FIG. 4). This is a structure for positioning the dust collector 10 when the dust collector 10 is set in the cleaner body 1.

  Moreover, the fitting part 1a1 with the bottom face of the bottom cover 31 (refer FIG. 2) of the dust collector 10 is provided in the lower part of the attachment location of the dust collector 10 in the cleaner body 1, and the dust collector 10 is fixed. As a structure for. And it is the structure which fixes the upper part of the dust collector 10 with the cover body 19 provided in the upper part of the cleaner body 1. FIG.

  As shown in FIG. 4, in a state where the dust collector 10 is attached to the cleaner body 1, the dust collector 10 is fluidly connected to the duct 21. The duct 21 is adjacent to a protective filter covered with the introduction pipe 20 adjacent to the hose attachment port 11 and the filter cover 17.

  The electric blower 14 is fluidly connected to a duct 21 through which air passing through a protective filter after removing dust is fluidized on the upstream side, and a high dust collecting filter 29 is fluidly connected to the downstream side.

<Air flow path including dust sucked into the vacuum cleaner body 1>
In a state where the dust collector 10 is attached to the cleaner body 1, a series of flow paths are formed from the hose attachment port 11 to the high dust filter 29 as shown in FIG.
In the vacuum cleaner main body 1 of the electric vacuum cleaner S, the air sucked into the vacuum cleaner main body 1 from the suction body 7 flows as indicated by arrows β1 to β8 shown in FIG.

  Specifically, air containing dust or the like sucked by the suction body 7 (see FIG. 1) flows into the introduction pipe 20 in the cleaner body 1 from the hose attachment port 11 (arrow β1 in FIG. 4) and is introduced. It passes through the inside of the pipe 20 and reaches the dust collector 10 through the inlet pipe outlet 12 (arrow β2 in FIG. 4). The air containing dust and the like that has entered the dust collector 10 becomes an air flow around the inner cylinder 40 (arrow β3 in FIG. 4). Air and dust are separated by the centrifugal force generated by the airflow, the air is sucked into the inner cylinder 40, and a part of the airflow (arrow β4 in FIG. 4) flows to the lower part of the dust collector 10. Dust falls along the inner surface of the outer cylinder 30 by this air flow (arrow β4 in FIG. 4) and accumulates in the lower part of the dust collector 10.

  The airflow to the lower part of the dust collector 10 (arrow β4 in FIG. 4) rises along the outer peripheral surface of the cylindrical umbrella 40 (arrow β5 in FIG. 4) and is sucked into the inner cylinder 40. In the inner cylinder 40, air containing fine dust that could not be completely centrifuged that has passed through a mesh member 42 a to be described later flows, and fine dust is removed by the dust collection filter 32 provided in the dust collector 10. Then, the air from which the dust has been removed passes through the duct 21 and is sucked into the electric blower 14 (arrow β6 in FIG. 4). The air sucked into the electric blower 14 passes through the high dust filter 29 to remove foreign matters and the like remaining (arrow β7 in FIG. 4), and is discharged to the outside from the discharge port 76 at the rear lower part of the cleaner body 1. It is discharged (arrow β8 in FIG. 4).

Here, the high dust filter 29 removes fine dust that could not be collected by the dust filter 32 and wear debris of the carbon brush (not shown) of the electric blower 14 from the air after dust removal, and almost dust. It is made into clean air that does not contain air and is discharged outside the vacuum cleaner body 1.
Although details are omitted, a packing (not shown) is provided at a connection portion (contact portion) of each component in the vicinity of the flow path of the air sucked into the above-described cleaner body 1 so that airtightness during operation is prevented. Is retained.

<Cord reel 23 and introduction tube 20>
As shown in FIG. 3, the motor case 16 that houses the electric blower 14 shown in FIG. 4 is arranged at the rear right side of the vacuum cleaner body 1, and for supplying power from the outlet etc. to the electric blower 14 etc. at the left rear side. A cord reel 23 for storing the power cord 23a is disposed. In the present embodiment, the introduction pipe 20 and the introduction pipe outlet 12 are arranged on the left side due to the arrangement of the motor case 16 and the cord reel 23, but this is not restrictive, and they may be arranged on the right side.

  The introduction pipe 20 is arranged not on the center of the vacuum cleaner body 1 but on either the left or right side, as will be described in detail later, but the tangential direction of the inner peripheral surface of the outer cylinder 30 of the dust collector 10 (vacuum cleaner) This is because it is easy to generate a swirling flow by inhaling the sucked air from the left and right side portions of the main body 1. Accordingly, the rotational direction of the swirling flow varies depending on the arrangement of the introduction pipe 20, but the rotational direction may be either clockwise or counterclockwise. For example, when the introduction pipe 20 is arranged on the left side, a clockwise swirl flow is obtained. In the present embodiment, the introduction pipe 20 is arranged on the left side, and a clockwise swirling flow is provided.

  For example, the inlet pipe may be arranged on the left side (or the center) and the inlet pipe may have a shape with many bent portions such that the inlet pipe outlet is on the right side, but the pressure loss increases. Therefore, the introduction pipe 20 is arranged as shown in FIG. 3 and is shaped so as to be connected to the introduction pipe outlet 12 with a radius as large as possible from the hose attachment port 11 in order to suppress an increase in pressure loss in the introduction pipe 20 as much as possible. It is said. Further, the volume and cross-sectional area in the introduction pipe 20 are formed as large as possible in order to suppress the increase in pressure loss as much as possible.

<Dust collector 10>
Next, the dust collector 10 will be described with reference to FIGS. FIG. 5 shows a front view of the dust collector 10, and FIG. 6 shows a left side view of the dust collector 10. 7 shows a rear view of the dust collector 10, and FIG. 8 shows an exploded view of the dust collector 10. 9 and 10 illustrate attachment / detachment of a dust collection filter 32 and a filter case 34 described later. 11 shows a cross-sectional view taken along the line BB shown in FIG. 6, and FIG. 12 shows an exploded view of the inner cylinder 40 described later. When the dust collector 10 is described as a single unit from FIG. 5 onward, the bottom lid 31 side is the downward direction.

The dust collector 10 has a function of separating dust from air containing dust sucked by the suction body 7 and collecting the dust.
The dust collector 10 is generally formed of an outer cylinder 30, an inner cylinder 40, a filter case 33 that houses a dust collection filter 32 (see FIG. 4), and a bottom cover 31. A filter case 33 is disposed at the top of the outer cylinder 30 and a bottom lid 31 is disposed at the bottom. An inner cylinder 40 is provided in the outer cylinder 30 concentrically with the outer cylinder 30.

  Although details will be described later, the dust collector 10 has a space for separating and collecting dust between the outer cylinder 30 and the inner cylinder 40. That is, in the space formed by the outer cylinder 30 and the inner cylinder 40, the upper part is provided with the dust separation part 10A, and the lower part is provided with the dust container 10B.

  The dust separation unit 10A is a space that separates dust from the air carrying the dust. The dust container 10B is a space for storing and storing dust.

<Outer cylinder 30>
As shown in FIG. 8, the outer cylinder 30 has a substantially cylindrical shape that is open at the top and bottom, and includes an inflow pipe 38 into which air (gas) containing dust flows from the introduction pipe outlet 12 on the side surface. The outer inner surface (the inner surface located on the left side in FIG. 7) of the inflow pipe 38 is formed so as to be connected to the inner peripheral surface 30n of the outer cylinder 30 in a substantially tangential direction. The inflow pipe 38 is connected to the introduction pipe 12, and is formed with an opening 38a into which air containing dust is introduced from the introduction pipe outlet 12 (see FIG. 7). In addition, a constricted portion 38b is provided on the surface facing the opening 38a of the inflow pipe 38 (opening at a portion where the inflow pipe 38 and the outer cylinder 30 are connected), and the opening area is made smaller than that of the opening 38a.

  The throttle portion 38b of the inflow pipe 38 is formed by a throttle wall 30b along the arc shape of the outer cylinder 30, and the first vertical side 38b1 in the vertical direction and the upper portion from the vertical direction are inclined outward and the lower portion is inclined inward. This is a substantially trapezoidal opening formed by the second vertical side 38b2, the first horizontal side 38b3 in the horizontal direction, and the second horizontal side 38b4. As described above, the first vertical side 38b1 is formed in a substantially tangential direction of the inner peripheral surface 30n of the outer cylinder 30. Since the opening 38 a has a shape along the tangent line of the inner peripheral surface 30 n of the outer cylinder 30, air containing dust becomes a swirling airflow along the inner peripheral surface 30 n of the outer cylinder 30.

  In addition, the second vertical side 38b2 is configured such that the upper part is inclined to the outside and the lower part is inclined to the inside, and the throttle part 38b is an opening having a wider lower part than the upper part, thereby adjusting the amount of air flowing to the dust container 10B. Even when dust accumulates in the dust container 10B, the dust can be compressed and conveyed to the dust container 10B.

  Due to the shape of the throttle portion 38b, the air flowing from the inlet pipe outlet 12 into the outer cylinder 30 of the dust collector 10 becomes an air flow around the central axis O of the outer cylinder 30 (the central axis of the dust collector 10). The inside of the outer cylinder 30 is turned clockwise around O. Due to this swirling airflow, dust contained in the air is separated by centrifugal force in the dust separator 10A.

  In the present embodiment, the diaphragm wall 30b constituting the diaphragm portion 38b is provided with a rib (rectifying portion) 30c that protrudes toward the opening 38a from the left end to the right end of the diaphragm wall 30b as shown in FIG. There are several. In other words, the rectifying unit 30c is arranged on the throttle wall 30b that constitutes the throttle unit 38b. In the present embodiment, the rectifying portion 30c is provided on the diaphragm wall 30b along the arc shape of the outer cylinder 30, but the present invention is not limited to this, and the surface along the first vertical side 38b1 and the second vertical side The configuration may be provided on a plurality of surfaces including a surface along 38 b 2, a surface along first horizontal side 38 b 3, and a surface along second horizontal side 38 b 4, or any single surface.

  The cross-sectional shape of the rib 30c is a shape that approximates a triangle or regular triangle whose height from the diaphragm wall 30b is about 2 mm, and eight ribs 30c are provided on the diaphragm wall 30b. The rib 30c has an effect of rectifying the air flow. The flow of air that has flowed into the introduction pipe 38 is rectified by the ribs 30c so that the air flows along the inner peripheral surface 30n of the outer cylinder 30 so that the air that has flowed from the opening 38a swirls in the outer cylinder 30. It is possible to suppress a collision at the time of merging with a flowing air flow and to reduce a fluid sound generated by the air flow.

  In the present embodiment, of the eight ribs 30c, the upper five are provided so as to be inclined in the substantially horizontal direction, and the lower three are provided so as to be inclined downward from the horizontal direction from the right end to the left end. The ribs 30c provided in the substantially horizontal direction have the effect of rectifying the air that joins the swirling flow, and the ribs 30c provided so as to be inclined downward have the effect of increasing the flow to the dust container 10B. Therefore, by dividing the direction of the ribs 30c as in the present embodiment, both the swirling flow rectifying effect and the dust conveying effect can be achieved. The direction and the number of ribs (rectifying portions) 30c can be changed according to the amount of air flowing in, the size of the throttle wall 30b, and the like, and are not limited to this embodiment. Further, the cross-sectional shape of the rib (rectifying portion) 30c is not limited to this, and the same effect can be obtained with either a hemispherical shape or a rectangular shape. In addition, in the case of a triangle like this embodiment, since the space between adjacent ribs 30c is an inclined surface, there is an effect that it is difficult for fine dust to accumulate on the ribs 30c.

  Further, in the present embodiment, the ribs 30c that are convex are provided on the aperture 38a side (the cleaner body 1 side) of the aperture wall 30b in the aperture 38d, but the aperture 38a side as shown in FIG. A similar effect can be obtained by providing a concave groove (rectifying portion) 30h. 16 shows an external view (a) of the diaphragm wall 30b shown in FIG. 7 and a cross-sectional view (b) of the KK cross section, and FIG. 17 shows a groove 30h that is concave on the opening 38a side. The state which provided two or more is shown. Similarly, FIG. 17 shows an external view (a) of only the diaphragm wall 30b and a cross-sectional view (b) of the LL cross section.

  Further, since the air flow is separated at the end portion (near 38b2) of the throttle wall 30b, instead of the rib 30c protruding to the opening 38a side of the throttle wall 30b, as shown in FIG. In the case where the sawtooth-shaped (diamond-shaped repetitive pattern) unevenness 30e is provided near the end of the wall 30b (near 38b2), an effect of reducing fluid noise generated by the airflow is obtained.

  Further, in FIG. 17, a plurality of grooves 30h that are concave on the opening 38a side are provided across the entire width of the diaphragm wall 30b (from the left end to the right end), but the depth of the grooves 30h is uniform as shown in FIG. Instead, the groove 30h is such that the left end (downstream side of the air flow) in the figure is deepest and gradually becomes shallower toward the right side (upstream side of the air flow) in the figure. A similar effect can be obtained with such a groove 30h.

Further, as shown in FIG. 11, the outer cylinder 30 has a cylindrical shape at the upper part and a shape in which the lower part is a tapered truncated cone shape and expands downward. The lower part of the outer cylinder 30 is inclined about 9 to 10 degrees with respect to the central axis O with the central axis O in the vertical direction, and the central axis O is at the boundary between the upper cylindrical shape and the lower truncated cone shape. On the other hand, an enlarged portion (step) 30d whose radius changes stepwise in a substantially vertical direction is provided. The enlarged portion 30d is enlarged from the cylindrical inner peripheral surface of the upper portion of the outer cylinder 30 to the outer diameter side by about 2.5 mm. The enlarged portion (step) 30d includes a shape such as an inclination, a taper, or a curved surface. In this embodiment, the outer peripheral surface of the outer cylinder 30 is also enlarged according to the expansion part 30d expanding from the cylindrical inner peripheral surface of the upper part of the outer cylinder 30.
Here, “substantially vertical or substantially horizontal” is used to indicate the shape, and is not limited to the vertical or horizontal as long as it has an effect.

  The enlarged portion 30d is provided on substantially the same plane as the upper surface 44c of the umbrella portion 44 of the inner cylinder 40 when the inner cylinder 40 is mounted on the outer cylinder 30. Due to the enlarged portion 30d, the sucked dust accumulates from the bottom lid 31 side below the enlarged portion 30d. In the enlarged view of part C in FIG. 11 (b), the flow of air and the movement of dust are indicated by arrows, the solid line arrows (γ2, γ5a, γ6a, γ7, γ9) are the flow of air, and the broken line arrows (δ1 to δ3). ) Is the movement of dust. The air containing the sucked dust is separated from the air by the swirl flow (γ1) generated in the dust separation unit 10A. The separated dust is conveyed to the dust container 10B by γ2 flowing to the dust container 10B. The air (flow of γ2) turns into a flow γ7 that returns to the dust separation portion 10A through the umbrella portion 44 and the inner umbrella portion 45 of the inner cylinder 40 while turning as it rises.

  From the flow γ2 to the flow γ7, flows γ5a and γ6a are generated over the first annular rib 44a1 provided on the side surface of the umbrella portion 44 and the second annular rib 45b1 provided on the side surface of the inner umbrella portion 45. To do. By γ5a and γ6a, dust is pushed toward the inner peripheral surface of the outer cylinder 30 by centrifugal force as indicated by arrows δ2 and δ3, and further accumulated on the bottom lid 31 side by the flow γ2 flowing into the dust container 10B. To do. When the amount of accumulated dust increases, the dust returns to the dust separator 10A and is pushed toward the inner peripheral surface of the outer cylinder 30 by centrifugal force as indicated by the arrow δ1 by the swirling of the flow γ7. However, the enlarged portion 30d is provided. Dust hardly accumulates at the corner portion 30d2 that can be formed. As a result, a space H is created in the vicinity of the corner 30d2, and the dust is compressed by the flow of γ2, so that the space H is maintained. This space H makes it easy for the flow of γ2 to flow downward, so that the effect of compressing the dust downward can be maintained.

  At this time, when the airflow resistance in the dust container 10B is increased by the accumulated dust, the air flow flows as γ9 after the dust is compressed. Further, the space H can reduce the area where the accumulated dust contacts the lower inner peripheral surface 30n1 of the outer cylinder 30 and the outer peripheral surface of the umbrella portion 44, and can suppress the frictional force at the time of throwing away the garbage. Therefore, as in the present embodiment, by providing the enlarged portion 30d on substantially the same plane as the upper surface 44c of the umbrella portion 44 of the inner cylinder 40, it is possible to obtain an effect of easily discharging dust.

  The enlarged portion 30d only needs to have an effect of creating a space H between the lower inner peripheral surface 30n1 of the outer cylinder 30 and dust as described above, and the upper surface of the umbrella portion 44 of the inner cylinder 40 as in the present embodiment. In addition to providing the enlarged portion 30d on substantially the same plane as 44c, the same effect can be obtained by providing the enlarged portion 30d within the height range of the umbrella portion 44.

  Moreover, in this embodiment, although the expansion part 30d is expanded about 2.5 mm from the cylindrical internal peripheral surface of the upper part of the outer cylinder 30, even if it expands further, the same effect will be acquired.

Further, by providing the first annular rib 44a1 and the second annular rib 45b1, dust is pushed toward the inner peripheral surface side of the outer cylinder 30, and by providing the enlarged portion 30d, the dust is compressed by the flow γ2. Thus, the dust accumulated in the dust container 10B and the dust contained in the air returning from the dust container 10B can be prevented from returning to the dust separator 10A. There is an effect of suppressing blow-through of fine dust from the mesh member 42a.
In other words, the enlarged portion 20d has a function of preventing dust from flowing out from the lower truncated cone-shaped portion of the outer cylinder 30 to the upper cylindrical portion.

  Furthermore, the lower part from the enlarged portion 30d is a substantially conical lower inner peripheral surface 30n1, so that dust can be easily dropped when the waste is discarded, and the volume of the dust accommodating portion 10B can be enlarged, so that more dust can be accumulated. Play.

  Here, the enlarged portion 30d of the outer cylinder 30 may not be provided in the entire circumference of the inner peripheral surface of the outer cylinder, and may not be provided in a part on the opening 38a side. The inflowing air has a swirl flow in which the flow velocity is highest near the face of the opening 38a and the flow velocity gradually decreases. For this reason, in this embodiment, the expansion part 30d is provided in the range where the flow velocity is high.

  In addition, as shown in FIG. 6, the dust collector 10 is provided with a handle 35 for carrying. The upper portion of the handle 35 is provided with a waste disposal button 35a that is pressed when discharging (disposing) the waste. A bottom lid 31 described later is rotatably supported on the lower front side of the outer cylinder 30. The handle 35 has a built-in rod 80 for transmitting the force when the dust disposal button 35a is pressed to a slide clamp 81, which will be described later. In order to operate the rod 80 and the slide clamp 81 smoothly, an external handle 35 is not provided. The side surface of the cylinder 30 is preferably a substantially vertical (substantially up and down) surface, not a step or an inclination. That is, as in the present embodiment, the rod 80 is arranged in the vertical direction by providing a clamp mechanism, which will be described later, at a position where the opening 38a side is substantially D-shaped (not shown) when the outer cylinder 30 is viewed from below. Since it can operate | move, the slide clamp 81 can be operated smoothly and dust can be discharged | emitted more easily.

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

  The filter receiving portion 34 has a shape in which the inner wall surface of the filter case lower portion 33b is offset so as to be entirely accommodated in the filter case lower portion 33b provided in the outer cylinder 30 (a shape whose diameter is reduced from the inner wall surface of the filter case lower portion 33b) It is formed with a maximum dimension that can be easily attached to and detached from the filter case lower portion 33b.

  As shown in FIG. 8, the substantially central portion of the filter receiving portion 34 is an opening, and is in fluid communication with an inner cylinder 40 described later. Further, an airtight member 34 a is provided on the bottom surface of the outer shell of the filter receiving portion 34. The airtight member 34a is in contact with the bottom surface of the filter case lower portion 33b, thereby ensuring airtightness between the filter receiving portion 34 and the filter case lower portion 33b.

  9 shows an external view of the dust collector 10 with the filter case upper portion 33a closed (FIG. 9A), and an external view of the dust collector 10 with the filter case upper portion 33a opened (FIG. 9B). )). FIG. 10 shows an external view when the dust collecting filter 32 is removed in FIG. 9B (FIG. 10A), and an external view when the filter receiving portion 34 (including the inner cylinder 40) is removed. FIG. 10 (b)) is shown.

  A fixing rib 34 b is provided on the outer periphery of the upper portion of the outer shell of the filter receiving portion 34. As shown by the arrow α2 in FIG. 10, after the filter receiving portion 34 is mounted at a predetermined position on the filter case lower portion 33b, the fixed rail 33c ( 10) and the fixing rib 34b (see FIG. 9) are fitted, and the filter case lower portion 33b and the filter receiving portion 34 can be fixed in an airtight state. As shown in FIG. 8, the upper surface of the filter receiving portion 34 is provided with a bowl-shaped dust collecting filter receiving portion 34 c and is in pressure contact with the lower surface side of a packing 32 a provided on the outer periphery of the dust collecting filter 32 described later.

  The dust collection filter 32 is folded in a pleat shape (mountain fold shape) in order to enlarge the ventilation area, and is adhered to a circular frame. As described above, when the dust collecting filter 32 is attached to the filter receiving portion 34, the lower surface side of the packing 32a is in contact with the dust collecting filter receiving portion 34c provided in the filter receiving portion 34, and the upper surface side of the packing 32a is the filter case. It contacts the airtight surface 33a1 of the upper part 33a. Thus, the filter case upper part 33a and the filter receiving part 34 are hermetically sealed with respect to the external space.

  As described above, the filter case upper part 33 a is connected to the filter case lower part 33 b by the upper hinge mechanism 70. The upper hinge mechanism 70 includes a shaft 61 behind the filter case upper portion 33a, and is configured by inserting the shaft 61 provided in the filter case upper portion 33a into a shaft hole (not shown) provided at the rear of the filter case lower portion 33b. ing. The shaft hole and the shaft 61 have a configuration opposite to that of the present embodiment, and the shaft 61 may be provided on the filter case lower portion 33b. A lock mechanism 37 is provided in front of the filter case upper portion 33a. The lock mechanism 37 includes a rail portion 37a and a slide portion 37b. The slide portion 37b is mounted so as to cover the rail portion 37a and is slidable left and right. The filter case upper portion 33a rotates around the shaft 61, and the locking portion 36 provided in front of the rail portion 37a and the filter case lower portion 33b is fitted in the state where the filter case upper portion 33a and the filter case lower portion 33b are fitted. To do. At this time, the filter case upper part 33 a is fixed to the outer cylinder 30 by sliding the slide part 37 b in a direction covering the rail part 37 a and the locking part 36.

  FIG. 21A is a central cross-sectional view showing a state in which the filter case upper portion 33a is half closed from FIG. 20A, and FIG. 21B is an enlarged view of a portion E in FIG.

  In assembling the dust collector, the filter receiving portion 34 is mounted on the filter case lower portion 33b, the dust collecting filter 32 is placed, and the filter case upper portion 33a is covered. When placing the dust collecting filter 32, the mating portion 32a provided on the outer periphery is aligned with the notch 33b2 of the filter case lower portion 33b. The packing 32a on the outer periphery of the dust collection filter 32 is slightly above the predetermined position of the dust collection filter 32 due to the rise of the packing 32a due to the lip shape when the dust collection filter 32 is placed on the filter receiver 34. In this state, if the filter case upper part 33a is rotated in the closing direction, the airtight surface 33a1 of the filter case upper part 33a becomes a trajectory outside the packing 32a of the dust collecting filter 32, so that airtightness may not be ensured.

  In order to suppress this, a rib (pressing rib 62) is provided on the outside of the airtight surface 33a1 of the filter case upper portion 33a to push the dust collection filter 32 down to a predetermined position. The holding rib 62 is set so as to first touch the mating portion 32a provided on the outer periphery of the dust collecting filter 32 in the operation of closing the filter case upper portion 33a (see FIG. 21). It can be pushed down to a predetermined position.

  Therefore, the holding rib 62 is provided at a position corresponding to the upper portion of the mating portion 32a provided on the outer periphery of the dust collecting filter 32 in a state where the filter case lower portion 33b and the filter case upper portion 33a are combined, and the notch provided in the filter case lower portion 33b. The width is within the width of the portion 33b2. By providing such a structure, in the dust collector in which the filter case upper portion 33a and the filter case lower portion 33b are connected by the upper hinge mechanism 70, it is possible to maintain the airtightness around the dust collection filter 32.

  As shown in FIG. 8, the outer surface of the filter case upper portion 33a has a handle 55 for holding the dust collector 10 on the upper surface, a clamp portion 50 for fixing the cleaner body 1 to the front, and a clamp portion 50. The button 60 which drives is provided. An opening 39 that is fluidly connected to the electric blower 14 is provided behind the filter case upper portion 33a.

  As shown in FIG. 4, the opening 39 is connected to the duct 21 via the protective filter and the filter cover 17. As with the dust filter 32, the filter cover 17 is provided with a packing formed of a rubber member or the like on the front and rear surfaces of the outer peripheral portion, and the airtightness between the opening 39 and the duct 21 is maintained.

  The handle 55 of the filter case upper portion 33 a is covered with the lid 19 provided on the cleaner body 1 when the dust collector 10 is attached to the cleaner body 1. This is to prevent lifting the handle 55 (see FIG. 2) instead of the main body handle 18 (see FIG. 2) when carrying the cleaner body 1.

<Cover body 19>
The lid body 19 is rotatably supported by a rotary shaft portion provided on the upper portion of the cleaner body 1, and includes a torsion spring (not shown) that is biased in the opening direction of the lid body 19 on the rotary shaft portion. .

  The lid 19 is applied with a torsional force due to the elasticity of the torsion spring when it is tilted forward from the opened state (the state where the lid 19 is upright) in FIG. 2, and the claw portion 19a provided on the front side of the bottom surface of the lid 19 is The lid 19 is closed by engaging with the clamp part 50 of the filter case upper part 33a. At this time, an elastic force is applied to the lid 19 so that the torsion spring returns to its original state, and the dust collector 10 can be pressed against the cleaner body 1 as a reaction. With this configuration, both the airtight maintenance of the dust collector 10 and the cleaner body 1 and the fixing of the dust collector 10 to the cleaner body 1 are compatible.

When the button 60 (see FIG. 1) on the upper part of the filter case 33a is pressed in a state where the lid 19 is closed, the clamp part 50 is released, and the lid 19 is lifted by the elastic force of the torsion spring, and the handle 55 appears. With the handle 55 appearing, the user can easily remove the dust collector 10 from the cleaner body 1 by lifting the handle 55 (see FIG. 2).
In other words, when the lid 19 is open, the dust collector 10 is detached from the cleaner body 1 by pulling up the handle 55. In this way, when the lid 19 is closed, the cleaner body 1 cannot be lifted by the handle 55, and malfunctions occur when the cleaner body 1 is lifted and when the dust collector 10 is lifted. I'm trying to prevent it.

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

  As shown in FIG. 11A, the inner cylinder 40 has a substantially cylindrical shape, and is provided in the dust collector 10 so as to be concentric with the outer cylinder 30 as described above.

  The inner cylinder 40 includes an upper cylinder 41 having an intake portion 42 provided at the upper portion and an umbrella portion 44 including a cylindrical body 46 provided at the lower portion.

<Upper cylinder 41>
As shown in FIG. 12, the air intake portion 42 of the upper cylinder 41 is formed by a lattice-like frame body (support frame). In the present embodiment, the frame body (support frame) in the vertical direction is used, but a lattice shape having a frame body (support frame) in the vertical and horizontal directions may be used. In the intake portion 42, a mesh member 42a is stretched over the outer peripheral surface. The mesh member 42a is held on the frame (support frame) by covering or insert molding. By providing the mesh member 42 a in the intake portion 42, the upper inner cylinder 41 has a filter function and suppresses inflow of fine dust into the inner cylinder 40.

  In the present embodiment, the mesh member 42a uses polyester, but may be metal (for example, stainless steel), not a frame (support), but a small-diameter through-hole (about φ2 mm that can be molded with a mold). The air intake portion 42 having a plurality of holes) may be used. Unlike the case where the mesh member 42a is stretched around the frame (support frame), the through-hole is effective for strength and tearing, and has the advantage that secondary molding is unnecessary. However, if the diameter (opening area) of the through hole is larger than the opening area of the mesh member 42a, it is disadvantageous for the inflow of fine dust into the inner cylinder 40.

  As described above, the upper inner cylinder 41 communicates with the opening at the substantially central portion of the filter receiving portion 34 adjacent to the upper portion. In this embodiment, the flange 40a is provided on the upper surface of the inner cylinder 40, and the flange 40a is fixed to the bottom of the filter receiver 34. However, the upper surface of the inner cylinder 40 and the bottom of the filter receiver 34 are provided. You may form integrally. Alternatively, the inner cylinder 40 may be detachable from the filter receiving portion 34 without providing the flange portion 40a.

<Umbrella part 44>
An umbrella portion 44 is provided at the lower portion of the inner cylinder 40. The umbrella portion 44 is provided in a substantially cylindrical shape concentrically with the upper inner cylinder 41, and the upper surface is continuous with the upper inner cylinder 41 and is closed except for the shaft hole 44 d. A first annular rib 44 a 1 is provided on the outer peripheral surface 44 a of the umbrella portion 44.

  As shown in FIG. 11 (a), the first annular rib 44 a 1 is provided so as to protrude (convex) in a substantially vertical direction with respect to the outer peripheral surface 44 a of the umbrella portion 44, and is concentrated over the entire circumference of the umbrella portion 44. It is provided so as to be substantially perpendicular to the central axis O of the dust device 10 (the central axis of the outer cylinder).

  The height of the first annular rib 44a1 is, for example, about 4 mm (= s1) from the outer peripheral surface 44a of the umbrella portion 44 (see FIG. 11B). The first annular rib 44a1 suppresses or prevents the rising of the dust separated from the air containing the dust sucked in the outer cylinder 30. In addition, the first annular rib 44a1 is compressed because the dust separated in the lower part of the outer cylinder 30 is accumulated downward.

The umbrella part 44 has a shape with an open bottom and a space 44k therein.
And the inner umbrella part 45 which has the inner umbrella upper part 45a which made the shape of the umbrella part 44 small so that the space 44k in the umbrella part 44 may be included is provided.
<Inner umbrella 45>
As shown in FIG. 11A, the inner umbrella portion 45 has a cylindrical shape having an inner umbrella lower portion 45b projecting outward below the lower end edge of the umbrella portion 44 below the inner umbrella upper portion 45a.

  Further, the inner umbrella portion 45 is formed in an annular shape protruding outward from the inner umbrella lower portion 45b at a position below the lower edge of the umbrella portion 44 between the inner umbrella lower portion 45b and the inner umbrella upper portion 45a. A second annular rib 45b1 is provided in a protruding manner. The second annular rib 45b1 is provided substantially perpendicular to the outer peripheral surface of the inner umbrella lower part 45b, and is provided so as to be substantially perpendicular to the central axis O of the dust collector 10 over the entire circumference of the inner umbrella lower part 45b. It has been.

As shown in FIG. 11B, the second annular rib 45b1 has a smaller diameter than the first annular rib 44a1. For example, the second annular rib 45 b 1 has a height of about 1.5 mm (= s 2) from the outer peripheral surface 44 a of the umbrella portion 44, and is formed on the outer peripheral surface 44 a of the umbrella portion 44. It is formed at a height lower than the rib 44a1 by about 1.5 mm (= s3).
The second annular rib 45b1 has a height of about 4.2 mm (= s4) from the inner umbrella lower portion 45b of the inner umbrella portion 45.

Here, the distance s5 between the annular rib 44a1 on the outer peripheral surface 44a of the umbrella portion 44 and the lower inner peripheral surface 30n1 of the outer cylinder 30 is, for example, about 9 mm.
The height of the first annular rib 44a1 and the height of the second annular rib 45b1 are appropriately changed depending on the distance between the umbrella portion 44 and the inner umbrella portion 45 and the lower inner peripheral surface 30n1 of the outer cylinder 30. is there.
In the inner umbrella portion 45, a cylindrical body 46 (see FIG. 11A) having a conical shape convex downward is provided.

  Further, the inner umbrella portion 45 is provided with a cylindrical body 46 concentrically with the inner umbrella portion 45, which has a tapered shape that tapers from the top toward the bottom surface 46 t. The bottom surface 46t of the cylindrical body 46 is closed and formed in a substantially hemispherical shape. In the present embodiment, a hole of about φ3.5 mm is provided on the bottom surface 46t of the cylindrical body 46, and serves as a drain hole when the dust collector is washed with water. By making the cylindrical body 46 into a tapered shape, the container shape has a space that expands downward together with the tapered portion at the lower part of the outer cylinder 30, so that it becomes easy for the garbage to fall when the garbage is discarded. (See FIG. 15).

  As described above, a part of the inner umbrella portion 45 is included in the umbrella portion 44. Although details will be described later, by providing a mechanism in which the inner umbrella portion 45 slides in the up and down direction, discharge assist at the time of disposal of waste is performed.

The inner umbrella portion 45 is accommodated in the umbrella portion 44 except when the waste is discarded, such as when dust is sucked from the mouthpiece 7. The inner umbrella portion 45 slides downward due to the elastic force in the extension direction of the compression spring 47 when the waste is discarded, and pushes the dust in the outer cylinder 30 toward the lower external space (such as a trash can).
The vertical sliding distance of the inner umbrella portion 45 is set to be less than the height of the space 44k of the umbrella portion 44 (see FIG. 15). In other words, the upper surface 45a1 (see FIG. 11A) of the inner umbrella portion 45 does not extend below the bottom surface 44b of the umbrella portion 44. This is because a gap is not formed between the bottom surface 44b of the umbrella portion 44 and the top surface 45a1 of the inner umbrella portion 45 when the garbage is discarded, so that the space between the bottom surface 44b of the umbrella portion 44 and the top surface 45a of the inner umbrella portion 45 is reduced. This is to reduce the possibility of dust being caught in the water. Further, the inner umbrella portion 45 is provided with a necessary minimum clearance (space) that can easily slide in the space 44k in the umbrella portion 44.

  Moreover, since the umbrella part 44 is a part in which dust accumulates, if the clearance with the inner umbrella part 45 is too small, the dust may be caught in the clearance and difficult to slide. In the present embodiment, a clearance is provided in consideration of the biting of dust, and a plurality of ribs 45r (see FIG. 12) are provided on the outer periphery of the inner umbrella portion 45 to provide guidance for the inner umbrella portion 45. The backlash at the time of sliding due to the increased clearance between the portions 45 is reduced.

  Further, the second annular rib 45b1 provided in the inner umbrella lower portion 45b of the inner umbrella portion 45 is arranged such that the upper surface of the second annular rib 45b1 and the umbrella portion in a state where the inner umbrella portion 45 is accommodated in the space 44k of the umbrella portion 44. The bottom surface 44b of 44 is in contact. Thereby, the entry of dust into the gap between the umbrella portion 44 and the inner umbrella portion 45 during dust suction is suppressed.

<Sliding mechanism of the inner umbrella portion 45>
Next, a sliding mechanism of the inner umbrella portion 45 that assists in discharging the collected garbage will be described.
As shown in FIG. 11A, the sliding mechanism of the inner umbrella portion 45 has a base member 48 in which a spring seat is formed inside the inner umbrella portion 45. The base member 48 is a member that receives the compression spring 47 and transmits an elastic force downward of the compression spring 47 to the inner umbrella portion 45.

  The base member 48 includes a spring case 48c that accommodates the compression spring 47 and a spring shaft 48j through which the compression spring 47 is inserted. The umbrella portion 44 is provided with a piston portion 44p nested in the spring case 48c. The spring shaft 48j of the base member 48 has a structure in which a stopper 49 of the sliding mechanism of the inner umbrella portion 45 can be fastened and fixed with a screw n1.

  As shown in FIG. 12, a compression spring 47 is inserted into the spring case 48c of the base member 48 from above through the spring shaft 48j, and the nested piston portion 44p integrated with the upper cylinder 41 and the umbrella portion 44 is inserted. The compression spring 47 is mounted so as to be pushed from above (see FIG. 11A). Thereafter, the stopper 49 is fixed to the spring shaft 48j with the screw n1. Although details of the structure are omitted, the sliding mechanism of the inner umbrella portion 45 is configured by fitting the lock mechanism portion provided on the top surface of the inner umbrella portion 45 with the base member 48. At this time, the outer periphery of the spring case 48 c provided on the base member 48 is covered with a cylindrical body 46 that is formed integrally with the inner umbrella portion 45 and provided concentrically. The spring case 48c of the present embodiment is provided with a slit 48c1 on the side surface so that it can be removed even when dust enters the spring case 48c. Therefore, the spring case 48c needs to be covered with the cylindrical body 46. Accordingly, the slit 48c1 is not provided in the spring case 48c, and the spring case 48c can also serve as the cylindrical body 46, and the sliding mechanism can be configured by the substantially hollow cylindrical inner umbrella portion 45 and the base member 48. According to such a configuration, the weight of the sliding mechanism can be reduced. However, since it is difficult to eliminate the entry of dust into the spring case 48c, the configuration of this embodiment is desirable.

  Further, the stopper 49 slides to a stopper receiving portion 44u (see FIGS. 11A and 12) provided on the upper surface 44c of the umbrella portion 44. Therefore, as described above, since the sliding distance of the inner umbrella portion 45 is less than the height of the space 44k of the umbrella portion 44, the height of the stopper 49 of the sliding mechanism of the inner umbrella portion 45 is substantially equal to the sliding distance. It has become.

  In such a sliding mechanism, the state in which the compression spring 47 is closest to the natural length is the state in which the inner umbrella portion 45 protrudes most from the outer cylinder 30 (see FIG. 15), as shown in FIG. When the bottom cover 31 is closed, the compression spring 47 is compressed. For this reason, when the bottom cover 31 described later is unlocked when the garbage is discarded, as shown in FIG. 15, the compression spring 47 is in an extended state close to the natural length, so that the inner umbrella portion 45 protrudes downward, and the inner umbrella portion 45, Dust is pushed out to the external space by the cylindrical body 46 or the like.

<Bottom lid 31>
As shown in FIG. 11 (a), the bottom cover 31 is formed in a dish shape with a depth at which the central portion protrudes downward, and a recess 31b that is a recess on the opposite side of the portion protruding at the central portion. Have. The bottom lid 31 is formed in a dish shape to give the structure a curvature and improve the strength. Moreover, the hollow part 31b of the bottom cover 31 is larger than the spherical sphere radius (curvature) of the bottom face 46t of the cylindrical body 46, and the depth of the hollow part 31b is such that the bottom cover 31 is in an open state (outer cylinder). In the open state (see FIG. 15), which is perpendicular to the bottom surface of 30) (see FIG. 15), a surface that becomes horizontal is not formed in the recess 31 b. In other words, the depth of the recess 31b is as shallow as possible. This is to prevent dust from remaining in the recess 31b when discharging the dust.

  Also, a bottom rib 31c as shown in FIG. This is because the rotation of the dust swirling in the lower taper in the outer cylinder 30 is prevented, and the dust is compressed downward with the bottom rib 31c as a base point. The bottom rib 31c has a substantially triangular shape on the outer peripheral side in the bottom lid 31 so as to become lower toward the center from a height substantially equal to the depth of the bottom lid 31, and is arranged on the front side and the left and right. . Since the bottom rib 31c is adjusted by the dust collection volume, the shape of the umbrella portion 44, and the like, the shape is not limited to this.

  Moreover, in this embodiment, the hollow part 31b is formed separately from the bottom cover 31, and POM (polyoxymethylene: so as to reduce wear of the member due to friction with the cylindrical body 46 when the bottom cover 31 is opened and closed. Polyacetal) or the like is used, but it may be formed integrally with the bottom cover 31.

  The bottom cover 31 has a rotating shaft 31a on the outer periphery, and includes a clamp receiver 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 has a structure in which a rotating shaft 31a provided in the bottom cover 31 is attached to a hinge cover 75, and the hinge cover 75 is fixed to a hinge cover fixing portion 30f provided on the lower front side of the outer cylinder 30 with screws or the like. ing. Although the opening and closing of the bottom cover 31 will be described later, the bottom cover 31 is provided with a torsion spring on the rotating shaft 31a, and is biased to the state where the bottom cover 31 is opened (see FIG. 15).

  FIG. 20 shows a central sectional view (FIG. 20A) of FIG. 10B in which the bottom lid 31 is closed and the filter case upper portion 33a is opened. Moreover, the enlarged view of the part enclosed with the broken line of Fig.20 (a) is shown in FIG.20 (b). This figure shows a state in which the dust catching filter 32 and the filter receiving portion 34 integrated with the inner cylinder 40 are removed, the filter case upper portion 33a is rotated by approximately 90 degrees, and the dust collector 10 is placed on a substantially horizontal floor surface. The filter case upper part 33a is over the rear rib 33b3 provided on the bottom surface of the filter case upper part 33a with the protrusion 30g provided on the upper rear part of the outer cylinder 30, so that the filter case upper part 33a is rotated by approximately 90 degrees. Fixing becomes possible. Further, the rear rib 33b3 restricts rotation so as to be approximately 90 degrees depending on the height of the protrusion 30g.

  Here, in general, the center of gravity of the outer cylinder is in the vicinity of the central axis. However, in the present embodiment, the filter case upper part (upper cover) 33a is connected to the outer cylinder 30 via a hinge, so that the filter case upper part (upper cover) 33a is rotated, for example, the filter case upper part (upper cover) 33a. Is rotated by approximately 90 degrees or more, a moment acts on the outer cylinder 30 from the filter case upper part (upper cover) 33a. As a result, a force that inclines the central axis O of the outer cylinder 30 from the vertical direction to the left and right acts, so that the balance is lost from the state in which the outer cylinder 30 is self-supported (the central axis O is in the vertical direction). Will fall.

  As shown in FIG. 20A, the outer cylinder 30 of this embodiment rotates the filter case upper part (upper lid) 33a from the closed position through the upper hinge part 70 by approximately 90 degrees (or 90 degrees or more is possible). In this state, even if the dust collection filter 32 and the inner cylinder 40 are removed, the structure is independent. That is, the filter case upper part (upper cover) 33a is rotated via the upper hinge part 70, and the filter case upper part (upper cover) 33a is located outside the central axis O of the outer cylinder 30 (the central axis of the dust collector 10). In a state where the open state is maintained at the position and the dust collecting filter 32 and the inner tube 40 are removed from the outer tube 30, the outer tube 30 is in a position where it is self-supporting (a position where the central axis O maintains a vertical state). The center of gravity is placed.

Further, with respect to the upper hinge mechanism 70 of the filter case upper portion 33a on the upper rear side of the outer cylinder 30, the hinge structure (lower hinge mechanism 71) of the bottom lid 31 on the lower front side of the outer cylinder 30 is provided at a substantially diagonal position. This keeps the balance of the center of gravity better. The center of gravity balance varies depending on the weight of the filter case upper portion 33a, the axial position of the upper hinge mechanism 70, the outer diameter of the outer cylinder 30, the size of the hinge structure (lower hinge mechanism 71) of the bottom lid 31, and the like. The rotation angle of 33a is not limited to this embodiment.
Further, a rib 31e is provided on the bottom surface of the bottom cover 31 on the clamp receiver 31d side (see FIGS. 15 and 20). In other words, the bottom lid 31 has the rib 31e at the bottom surface end opposite to the lower hinge mechanism 71. This is because the center of gravity can be moved forward by enlarging the range where the bottom surface of the bottom lid 31 is in contact with the floor surface toward the upper hinge mechanism 70 side of the filter case upper portion 33a, thereby making it easier to balance.

  Thus, when the dust collector 10 is placed on the floor or the like, the structure in which the dust collector 10 is self-supported with the filter case upper portion 33a being rotated is self-supporting with the dust filter 32 removed, and further Independence is possible with the entire inner cylinder 40 removed. Thereby, the dust collector 10 can be easily maintained, and the user-friendly dust collector 10 can be provided.

<Gas accumulation action in the dust collector 10>
Next, the dust collecting action in the dust collector 10 will be described.
When the user presses the operation button 5 provided on the operation unit 4 to start operation, the electric blower 14 is activated to suck air from the mouthpiece 7 (see FIG. 1). As described above, air including dust and the like sucked by the suction body 7 (see FIG. 1) flows into the introduction pipe 20 in the cleaner body 1 from the hose attachment opening 11 as shown in FIG. 4 arrow β1), through the introduction pipe 20 to the dust collector 10 via the introduction pipe outlet 12 (arrow β2 in FIG. 4).
The air containing dust or the like that reaches the dust collector 10 flows into the dust collector 10 through the opening 38a shown in FIG. At this time, the throttle wall 30b provided on the downstream side of the opening 38a flows in a tangential direction toward the inner peripheral surface of the outer cylinder 30 while increasing the flow velocity. Since the rib 30c is provided in the throttle wall 30b, the flow which collides with the throttle wall 30b is rectified, and the increase of the fluid sound generated by an air flow is suppressed.

FIG. 13 is a cross-sectional view taken along the line BB in FIG. 6 showing the airflow in the dust collector 10.
The air containing dust and the like flowing in the tangential direction of the outer cylinder 30 in the dust collector 10 becomes a swirling flow as indicated by an arrow γ1 in FIG. 13, and the upper inner cylinder along the inner surface of the outer cylinder 30 in the outer cylinder 30. Turn around 41. Thereby, centrifugal force acts on the dust and the dust is separated from the air. Since dust such as dust is heavier than air, it falls along the inner peripheral surface 30n of the outer cylinder 30 as indicated by an arrow γ2 in FIG. That is, the dust is separated from the air by the dust separation unit 10 </ b> A that is the upper part in the dust collection unit 10. Most of the air from which the dust has been separated flows into the inner cylinder 40 from the air inlet 42 provided in the upper inner cylinder 41 (arrow γ8 in FIG. 13).

  On the other hand, the dust separated by the centrifugal force passes through the inlet of the dust collecting part 10B between the outer cylinder 30 and the umbrella part 44 by gravity and a part of the air flow, and is conveyed into the dust collecting part 10B. . At this time, since centrifugal force acts on the dust, the air containing fine dust in the dust collecting portion 10B swirls on the bottom cover 31 as indicated by an arrow γ3 in FIG.

  When the vacuum cleaner 1 is continuously used, the dust gradually accumulates, and the turning of the dust stops from the bottom rib 31c provided on the bottom cover 31, and the dust in the dust container 10B becomes full. In the state, dust accumulates in a donut shape. At this time, dust also accumulates between the inner umbrella portion 45 and the cylindrical body 46. The air flowing into the dust collecting part 10B flows from the vicinity of the outer periphery of the umbrella part 44 toward the upper inner cylinder 41 along the shape of the cylinder 46 and the inner umbrella part 45. Specifically, it turns while turning along the wall surface of the inverted triangular pyramid-shaped cylindrical body 46, passes through the inside of the inner umbrella portion 45, and turns along the outer peripheral surface of the inner umbrella lower portion 45 b of the inner umbrella portion 45. However, it rises (arrow γ4 in FIG. 13).

  The arrow γ4 hits the second annular rib 45b1 on the upper edge of the inner umbrella lower portion 45b of the inner umbrella portion 45, and a swirling flow around the second annular rib 45b1 is generated (arrow γ5 in FIG. 13). Garbage is separated by centrifugal force by the swirling flow and falls and accumulates in the lower part of the outer cylinder 30. In addition, an upward airflow is generated over the second annular rib 45b1 (arrow γ5a in FIG. 13).

  Further, the air containing fine dust that has passed over the second annular rib 45b1 on the upper edge of the inner umbrella lower part 45b rises along the outer peripheral surface 44a of the upper umbrella part 44. When hitting the rib 44a1, a swirling flow around the vicinity of the first annular rib 44a1 is generated (arrow γ6 in FIG. 13). Garbage is separated by centrifugal force by the swirling flow and falls and accumulates in the lower part of the outer cylinder 30 (arrow γ6a in FIG. 13).

  Due to the flow of the arrows γ5 and γ6, the dust is pushed to the inner peripheral surface side of the outer cylinder 30 by centrifugal force, and the dust flows below the dust container 10B by the flow of the arrow γ2 flowing into the dust container 10B. To deposit. In addition, as described above, by providing the enlarged portion 30d provided at the boundary between the dust separating portion 10A and the dust accommodating portion 10B, the corner portion 30d2 where dust does not easily collect at the boundary between the dust separating portion 10A and the dust accommodating portion 10B. A space H is created. By this space H, dust can be compressed and accumulated efficiently by the arrow γ2 flowing into the dust container 10B, and the amount of dust returning to the dust separator 10A is reduced.

Then, the air from which the dust has been removed by the second annular rib 45b1 and the first annular rib 44a1 is sucked into the intake portion 42 of the upper cylinder 41 as indicated by an arrow γ7 in FIG. It flows into the inlet portion 13 (see FIGS. 3 and 4) and is exhausted to the external space of the cleaner body 1 as described above.
Therefore, by providing the second annular rib 45b1 of the inner umbrella portion 45, the first annular rib 44a1 of the umbrella portion 44, and the enlarged portion 30d of the outer cylinder 30, it is possible to suppress the rising of dust and to direct the dust downward. Can be compressed.

  When the dust reaches a predetermined waste disposal reference line, the waste disposal is performed. As described above, the dust discharge mechanism facilitates the dust discharge by the dust discharge mechanism of the inner umbrella portion 45 and the tapered shape of the aspect that opens downward of the outer cylinder 30 even when the amount of sucked dust is small. It is done smoothly. In addition, when the dust container 10B is fully accumulated, a space is formed in the corner portion 30d2 by the enlarged portion 30d, so that the contact surface between the inner peripheral surface of the outer cylinder 30 and the dust is reduced, and the dust is discharged when the dust is discharged. The frictional force between the inner peripheral surface of the cylinder 30 and dust can be reduced, and the dust can be discharged smoothly.

<Operation when throwing away garbage>
FIG. 14 is a cross-sectional view taken along the line AA in FIG. 5 with the bottom cover 31 closed, and FIG. 15 is a cross-sectional view taken along the line AA in FIG. 5 when dust is discharged (the bottom cover 31 is opened). Show.
The operation at the time of waste disposal in the above-described waste discharge mechanism will be described.
The bottom cover 31 is released by depressing a garbage disposal button 35a provided on the top of the handle 35 provided in the dust collector 10 (see FIG. 15).

  The bottom cover 31 is provided with a rotating shaft 31a rotatably supported by the cleaner body 1 on the opposite side of the handle 35, and an opening / closing mechanism for the bottom cover 31 is provided on the handle 35 side.

  When the waste disposal button 35a provided on the upper portion of the handle 35 is pressed, the rod 80 in the handle 35 moves downward, the claw portion 83 of the slide clamp 81 is removed, and the bottom lid 31 is opened.

  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 when the claw portion 83 is removed (see FIG. 15). . When the depression of the waste disposal button 35a is released, the spring 80b provided on the slide clamp 81 returns to its natural length, so that the rod 80 returns upward and the slide clamp 81 returns to the position before the depression of the waste disposal button 35a.

  Simultaneously with the opening of the bottom cover 31, the compression spring 47 causes the inner umbrella portion 45 and the cylindrical body 46 to protrude downward. As a result, the inner umbrella portion 45 which is a part of the inner cylinder 40 has a position where the bottom cover 31 is opened closer to the opening 30a on the lower surface of the outer cylinder 30 than a position where the bottom cover 31 is closed. (See FIG. 15).

When the bottom lid 31 is closed after throwing away the garbage, the bottom surface 46t of the cylindrical body 46 that protrudes downward contacts the recessed portion 31b provided in the center of the bottom lid 31, and the inner umbrella portion 45 and the cylindrical body 46 are pushed upward. .
Since the bottom surface 46t of the cylindrical body 46 and the recessed portion 31b are in contact with each other with a spherical curvature, the contact area between the bottom surface 47 of the cylindrical body 46 and the recessed portion 31b can be increased even if the angle of the bottom lid 31 is changed by closing the bottom lid 31. The inner umbrella part 45 can be smoothly accommodated in the umbrella part 44 because a force is always applied in the vertical direction by bringing the curved surfaces into contact with each other.

  When the bottom lid 31 is closed to a substantially horizontal state, the clamp receiver 31d comes into contact with the claw portion 83, the slide clamp 81 moves in the direction in which the spring provided on the slide clamp 81 contracts, and the claw portion 83 is moved to the clamp receiver 31d. The spring returns to the point where it has been passed over, and the bottom lid 31 is locked in an airtight state.

<Operation when cleaning the dust collector 10>
After dust disposal, when dust remains in the dust collector 10 or maintenance of the dust collection filter 32 is required, the filter case upper portion 33a needs to be opened. The filter case upper portion 33a is connected to the outer cylinder 30 by the upper hinge mechanism 70, and is stably fixed in a state where the filter case upper portion 33a is rotated by approximately 90 degrees. Therefore, the dust collecting filter 32 and the inner cylinder 40 can be removed without pressing the filter case upper portion 33a. Further, in a state in which the dust collecting filter 32 and the inner cylinder 40 are removed from the dust collector 10, the filter case upper part 33a is stably independent even when the filter case upper part 33a is rotated approximately 90 degrees or when the outer cylinder 30 is placed on the floor surface. . For this reason, it is easy to attach and remove the dust collecting filter 32 and the inner cylinder 40, and it is easy to care for and easy to use.

According to the above embodiment, the following effects are obtained.
That is, it has a cleaner body in which an inlet pipe outlet through which gas sucked at the body intake port is guided is formed, and a dust collector provided detachably with respect to the cleaner body, the dust collector is An outer cylinder and an inner cylinder in the outer cylinder, the outer cylinder includes an inflow pipe connecting the inlet pipe outlet and the inside of the outer cylinder, and a throttle portion downstream of the inflow pipe, A rectifying unit is provided in the throttle unit. Thereby, the flow of the gas that has flowed into the inflow pipe from the inlet pipe outlet is rectified by the rectification unit and flows along the inner peripheral surface of the outer cylinder, and loss during gas suction can be reduced.

  Moreover, the said rectification | straightening part is arrange | positioned at the diaphragm wall along the circular arc shape of the said outer cylinder which comprises the said throttle part. As a result, the gas flowing into the inlet pipe from the inlet pipe outlet is rectified by the rectifier and flows along the inner peripheral surface of the outer cylinder, and the collision occurs when the gas merges with the airflow swirling in the outer cylinder. It is possible to suppress the fluid sound generated by the airflow.

  Moreover, the said rectification | straightening part is comprised by the some protrusion with a triangular cross section. As a result, the gap between the adjacent protruding rectification parts becomes an inclined surface, and therefore, it is difficult for fine dust to accumulate on the rectification parts.

  Moreover, the said rectification | straightening part is located in the downstream edge part vicinity with respect to the flow direction of the said gas of the said convex curved surface. Thereby, the fluid sound generated by the airflow can be further reduced.

  Further, the plurality of rectification units arranged side by side are arranged such that the lower rectification unit is inclined downward with respect to the upper rectification unit. Thereby, the rectifier provided on the upper side has the effect of rectifying the air that joins the swirl flow, and the lower rectifier provided so as to be inclined downward has the effect of increasing the flow of the dust container. Therefore, by dividing the direction of the rectification unit, it is possible to achieve both the rectification effect of the swirl flow and the dust conveyance effect.

  In addition, the height or depth of the rectifying unit with respect to the throttle wall gradually increases from upstream to downstream in the gas flow direction. Thereby, the rectification effect by the rectification | straightening part of the gas which flowed into the inflow pipe from the inlet pipe exit can be improved.

  In addition, this invention is not limited to above-described embodiment, Various embodiments are included. For example, the above-described embodiment is a description of the present invention in an easy-to-understand manner, and is not necessarily limited to one having all the configurations described. For example, a part of the configuration described may be included.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body, 1a upper case, 1b lower case, 10 dust collector, 10A dust separation part, 10B dust accommodating part, 11 hose attachment port (main body inlet), 12 inlet pipe outlet, 13 duct inlet part, 14 electric Blower, 17 Filter cover, 19 Cover body, 20 Introducing pipe, 21 Duct, 30 Outer cylinder, 30b Restriction wall, 30c Rib (rectifying part), 30d Enlarged part (step), 30d2 Corner part, 30e Concavity and convexity, 30f Fixed hinge cover Part, 30g Projection part, 30h Groove, 30n Inner peripheral surface, 30n1 Lower inner peripheral surface, 31 Bottom lid, 31a Rotating shaft, 31b Recessed part, 31c Bottom rib, 31d Clamp receiver, 32 Dust collection filter, 32a Packing, 33 filter Case, 33a Upper part of filter case (upper cover), 33a1 Airtight surface, 33b Lower part of filter case, 3 b2 Notch portion, 33b3 Rear rib, 34 Filter receiving portion, 34b Fixing rib, 35 Handle, 36 Locking portion, 37 Lock mechanism, 37a Rail portion, 37b Slide portion, 38 Inflow pipe, 38a Opening portion, 38b Restriction portion, 38b1 1st vertical side, 38b2 2nd vertical side, 38b3 1st horizontal side, 38b4 2nd horizontal side, 39 opening part, 40 inner cylinder, 40a flange part, 41 upper inner cylinder (frame body), 42 air intake 44 umbrella part 44a outer peripheral surface 44a1 first annular rib 44b bottom surface 44c upper surface 44k space 45 inner umbrella part 45a inner umbrella upper part 45a1 upper surface 45b inner umbrella lower part 45b1 second annular rib 46 cylinder, 46t bottom, 48c1 slit, 48j spring shaft, 49 stopper, 50 clamp, 54a1 annular rib, 55 handle 60 buttons, 61 shafts, 62 holding ribs, 70 upper hinge mechanism, 71 lower hinge mechanism, 75 hinge cover, 76 outlet, 80 rod, 80b spring, 81 slide clamp, 83 claw part, β1 to β8 air flow, γ1 ~ Γ9 Air flow, δ1 ~ δ3 Dust movement, O center axis, S vacuum cleaner, n1 screw

Claims (6)

A vacuum cleaner main body formed with an introduction pipe outlet through which gas sucked at the main body intake port is guided, and a dust collector provided detachably with respect to the vacuum cleaner main body,
The dust collector includes an outer cylinder and an inner cylinder in the outer cylinder,
The outer cylinder includes an inflow pipe that connects the inlet pipe outlet and the inside of the outer cylinder,
A vacuum cleaner comprising a throttle part downstream of the inflow pipe, and a rectifying part provided in the throttle part. The vacuum cleaner according to claim 1, wherein
The vacuum cleaner, wherein the rectifying unit is disposed on a throttle wall along an arc shape of the outer cylinder constituting the throttle unit. The vacuum cleaner according to claim 1 or 2,
The rectifying unit includes a plurality of protrusions having a triangular cross section. The vacuum cleaner according to claim 1 or 2,
The rectifying unit is located in the vicinity of a downstream end of the throttle wall with respect to the gas flow direction. In the vacuum cleaner of Claims 1 thru | or 3,
A plurality of the rectification units arranged side by side are arranged such that the lower rectification unit is inclined downward with respect to the upper rectification unit. The vacuum cleaner according to claim 2,
The rectifier is a vacuum cleaner characterized in that the height or depth with respect to the throttle wall gradually increases from upstream to downstream in the gas flow direction.

Images