Electric dust collector

Abstract

Provided is an electric dust collector in which dust does not contaminate the interior of a dust collection part. An electric vacuum cleaner is provided with: a suction unit that sucks air containing dust from a suction port; and a dust collecting part which is provided with an inflow port for taking in the dust-containing air sucked from the suction port and a sealing component installed on the periphery of the inflow port, and the sealing component is provided with a cylindrical base part installed on the periphery of the inflow port and a cylindrical rib which is arranged on the cylindrical base part and protrudes towards the inner side of the dust collecting part.

Description

Technical Field Technical Field

[0001] The invention relates to an electric vacuum cleaner. Background Art

[0002] As a conventional electric vacuum cleaner, Japanese Patent Application Publication No. 2006-055303 discloses a dust bag type electric vacuum cleaner, in which a dust box frame containing a dust bag is provided in a dust collecting chamber of a vacuum cleaner body, and dust is captured in the dust bag.

[0003] As a dust bag, a commercially available disposable dust bag (so-called paper bag) is generally used. In an electric vacuum cleaner of the dust bag type, a rubber seal is provided at the periphery of the inlet of the dust box frame into which the air containing dust flows. The seal has: an outer peripheral portion, which is mounted on the periphery of the inlet of the dust box frame; and a check valve, which is composed of a plurality of triangular valves protruding from the inner surface of the outer peripheral portion toward the central axis.

[0004] The dust bag is arranged in the dust box frame in such a way that the air inlet of the bottom paper of the dust bag overlaps with the seal of the dust box frame. The front ends of the multiple valves of the seal move into the dust bag due to the wind pressure during the operation of the electric vacuum cleaner, so that the air inlet opens and the air containing dust flows into the dust bag through the air inlet. When the drive of the electric vacuum cleaner is stopped, the front ends of the multiple valves of the seal return to the original position and block the air inlet, so that the dust in the dust bag does not leak into the dust collecting chamber. Summary of the invention

[0005] Although the seal of the dust box frame uses a check valve to prevent the dust in the dust bag from leaking into the dust collecting chamber, there is a gap between the outer periphery of the seal and the bottom paper around the air intake port of the dust bag. Therefore, during the operation of the electric vacuum cleaner, dust may leak into the dust box frame through the gap and cause contamination inside the dust box frame.

[0006] One aspect of the present invention provides an electric vacuum cleaner, which has been completed in consideration of the above circumstances.

[0007] One aspect of the present invention provides an electric vacuum cleaner comprising: a suction section that sucks air containing dust from a suction port; and a dust collecting section that comprises an inlet for taking in the air containing dust sucked from the suction port, and a sealing component installed around the inlet, the sealing component having a cylindrical base section installed around the inlet, and a cylindrical rib provided on the cylindrical base section and protruding toward the inner side of the dust collecting section. Effects of the Invention

[0008] According to the electric vacuum cleaner of one aspect of the present invention, it is possible to suppress the dust accumulated in the dust collecting bag provided in the dust collecting portion from leaking into the dust collecting portion due to the sealing member. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a perspective view of a first embodiment of an electric vacuum cleaner according to one aspect of the present invention as viewed from obliquely above. Figure 2 This is a sectional side view of the electric vacuum cleaner according to the first embodiment as viewed from the left side. Figure 3 This is a perspective view of the suction portion of the electric vacuum cleaner according to the first embodiment, as seen from obliquely below. Figure 4 This is a perspective view of the dust collecting portion of the electric vacuum cleaner according to the first embodiment, as seen from obliquely above. Figure 5 This is a cross-sectional view of the dust collecting portion of the first embodiment as viewed from the left side cut along the center line. Figure 6 This is a cross-sectional side view of the sealing member and the surrounding structure of the dust collecting portion according to the first embodiment as viewed from the left side. Figure 7 This is a perspective view of the sealing member according to the first embodiment as viewed from one end side in the direction of the central axis. Figure 8 This is a plan view of the sealing member according to the first embodiment as viewed from one end side in the direction of the central axis. Fig. 9 This is a perspective view of the sealing member according to the first embodiment as viewed from the other end side in the direction of the central axis. Fig.10 This is a cross-sectional side view of a state in which air containing dust is caused to flow into the dust collecting bag of the dust collecting portion of the first embodiment, as seen from the left side. Fig.11 Yes Description Figure 6 FIG. 4 is a diagram showing a state in which the front end of the protruding piece of the sealing member is moved to the inner side of the dust collecting portion due to wind pressure. Fig.12 yes Figure 8 A plan view of a state in which the front end of the protruding piece of the sealing component moves to the inner side of the dust collecting part due to wind pressure. Fig.13 This is a perspective view of the dust collecting portion of the first embodiment as seen from obliquely below. Fig.14 This is a perspective view showing a state in which the cover of the dust collecting unit according to the first embodiment is opened. Fig.15 This is a cross-sectional side view showing the pressing mechanism before the dust collecting bag according to the first embodiment is installed in the dust collecting portion, as seen from the left side. Fig.16This is a perspective view showing a state where a dust collecting bag is set in the dust collecting portion with the cover of the first embodiment opened. Fig.17 This is a cross-sectional side view showing the pressing mechanism after the dust collecting bag of the first embodiment is installed in the dust collecting portion, as seen from the left side. Fig.18A It is a top view of the dust collecting bag before use which is provided in the dust collecting unit of the first embodiment. Fig.18B yes Fig.18A Left side view of the dust bag. Fig.19 This is an explanatory diagram when a dust collecting bag is provided in the dust collecting unit of the first embodiment. Fig. 20 This is a perspective view showing a state in which the locking portion of the dust collecting portion according to the first embodiment is exposed to the outside. Fig.21 It is an explanatory diagram showing a locked state of the lock portion of the dust collecting portion according to the first embodiment. Fig. 22 It is an explanatory diagram showing a first operation of the interlocking mechanism of the lock portion according to the first embodiment. Fig.23 It is an explanatory diagram showing a second operation of the interlocking mechanism of the lock portion according to the first embodiment. Fig.24 This is an explanatory diagram showing a state where a full dust collecting bag is discarded from the dust collecting portion of the first embodiment. Fig.25 It is an explanatory diagram showing an electric vacuum cleaner according to a second embodiment. DETAILED DESCRIPTION

[0010] Hereinafter, the present invention will be described in further detail using the accompanying drawings. In addition, the following description is illustrative in all aspects and should not be construed as limiting the present invention.

[0011] (First Embodiment) Figure 1 This is a perspective view of a first embodiment of an electric vacuum cleaner according to one embodiment of the present invention as viewed from above. Figure 1 As shown, the electric vacuum cleaner 1 of the first embodiment includes: a suction part 3 for sucking air containing dust from a suction port 2, a dust collecting part 4 detachably mounted on the suction part 3, and a battery 5 detachably mounted on the suction part 3. In the case of this embodiment, a case where the electric vacuum cleaner 1 can be used as a handheld type or a pole type is illustrated, and a dust collecting bag (for example, a paper bag) is provided in the dust collecting part 4. More specifically, the electric vacuum cleaner 1 includes an extension pipe and a suction port body, which are not shown in the figure. When the suction port body is connected to the suction port 2 of the electric vacuum cleaner 1 via the extension pipe, it can be used as a pole type, and when the suction port body is directly connected to the suction port 2, it can be used as a handheld type.

[0012] Figure 2 2 is a cross-sectional side view of the electric vacuum cleaner according to the first embodiment as viewed from the left side. Figure 2 As shown in FIG. 1 , the suction unit 3 includes a housing 21, an electric suction machine 22 disposed in the housing 21, and an operation button unit 23 capable of operating the electric suction machine 22 to drive, stop, adjust the output, etc. Figure 2 2 shows an electric vacuum cleaner 1 in which the central axis 24 of the cylindrical dust collecting part 4 is horizontal. Figure 2 The structure of the electric vacuum cleaner 1 is described with the left side of the electric vacuum cleaner 1 being the front, the right side being the rear, the near front side being the left, the depth side being the right, the upper side being the upper side, and the lower side being the lower side. Figure 3 The front, back, left, right, up and down directions of the structure of the electric vacuum cleaner 1 in the following figures are based on Figure 2 And, the electric suction machine 22 is tilted so that the front is located lower than the rear. Thus, a space is formed below the electric suction machine 22, and components such as a substrate can be arranged in the space.

[0013] Figure 3 1 is a perspective view of the suction unit 3 of the electric vacuum cleaner according to the first embodiment as viewed from below. Figure 3 As shown, the housing 21 has: a housing for accommodating an electric suction machine 22 (see Figure 2 ) of the electrical component storage portion 31, a rod-shaped portion 32 protruding forward from the upper front end of the electrical component storage portion 31, a suction cylinder portion 33 connected to the front end of the rod-shaped portion 32, a handle portion 34 provided at the rear end side of the electrical component storage portion 31, and a battery holding portion 35 provided at the lower end of the electrical component storage portion 31 and capable of holding the battery 5 in a loadable and detachable manner.

[0014] The electrical component storage section 31 of the housing 21 has an air intake port 36 on the front wall, an engaging recess 37 below the air intake port 36, and an exhaust port 38 connected to the air intake port 36 on the right side wall. At the lower end of the suction cylinder portion 33 of the housing 21, a connection port 39 connected to the suction port 2 is provided near the boundary with the rod-shaped portion 32, a locking hook 310 is provided in front of the connection port 39, and a recess 311 is provided in the rear of the connection port 39. A sealing member 39a is provided around the connection port 39. The suction cylinder portion 33 has an upper member 33a and a lower member 33b (see Figure 1-3 ). The sealing member 39a is adhered around the connection port 39 of the upper member 33a. Figure 2As shown, the outer peripheral end of the seal 39a is sandwiched by the upper member 33a and the lower member 33b, and the outer peripheral end of the seal 39a is not exposed. By adopting such a structure, it is possible to prevent the user from accidentally touching the outer peripheral end of the seal 39a and causing the seal 39a to roll up. The suction cylinder portion 33 is a section between the suction port 2 and the connection port 39 through which air circulates, and air does not circulate inside the rod-shaped portion 32.

[0015] In the housing 21, the lower end portion of the suction cylinder 33, the lower end portion of the rod-shaped portion 32, and the front end portion (front wall) of the electrical component storage portion 31 are detachably held by the dust collecting portion 4 (see Figure 2 ) of the holding portion 312. The holding portion 312 is provided with a snap-fitting recess 37, a locking hook 310, a recess 311 and a connecting port 39, wherein the snap-fitting recess 37, the locking hook 310, and the recess 311 are related to the loading and unloading of the dust collecting portion 4 to the holding portion 312, and the connecting port 39 conveys air containing dust to the dust collecting portion 4.

[0016] Figure 4 1 is a perspective view of the dust collecting portion 4 of the electric vacuum cleaner according to the first embodiment as viewed from above. Figure 4 As shown, the dust collecting part 4 has: a cylindrical surrounding wall 41, the central axis 24 (refer to Figure 2 ) in the direction of the dust collecting part 4; a cover 42, which is provided at one end side of the surrounding wall 41 and can be opened and closed; and a locking portion 43, which is provided along the outer surface of the surrounding wall 41. The locking portion 43 is related to the opening and closing of the cover 42 and the engagement and disengagement of the dust collecting bag. When the cover 42 is in the closed state, the closed cover 42 is equivalent to the bottom of the dust collecting part 4.

[0017] The surrounding wall 41 includes a cylinder part 41a and a cover part 41b covering the upper outer surface of the cylinder part 41a. A portion of the locking part 43 is covered by the cover part 41b. A plurality of locking parts 43 are provided on the upper surface of the cover part 41b along the central axis 24 (see Figure 2 ) direction, and an inlet 45 penetrating the cover member 41b and the cylinder member 41a is provided at the position of the groove 44. A sealing member 56 made of rubber is provided at the inlet 45.

[0018] Figure 5 This is a cross-sectional view of the dust collecting portion 4 of the first embodiment cut along the center line and observed from the left side. Figure 5As shown, the opening end portion 51 provided at one end (front end) side of the surrounding wall 41 of the dust collecting portion 4 has: a protruding edge portion 52 protruding toward one end (front end) side in the direction of the central axis 24 of the surrounding wall 41 of the dust collecting portion 4, when viewed from a direction (left-right direction) orthogonal to the central axis 24 of the surrounding wall 41 of the dust collecting portion 4; and a retreating edge portion 53 retreating toward the other end (rear end) side in the direction of the central axis 24. The protruding edge portion 52 is the upper front end portion of the surrounding wall 41. In the case of the present embodiment, the protruding edge portion 52 is an area including the groove 44 and the vicinity of its left and right sides (refer to Figure 4 The inlet 45 is provided through the peripheral wall 41 of the bottom of the concave groove 44. In the case of the present embodiment, the inlet 45 is arranged near the upper part of the receding edge 53.

[0019] Figure 6 1 is a cross-sectional side view of the sealing member 56 and its surrounding structure of the dust collecting part 4 of the first embodiment as viewed from the left side. The sealing member 56 is provided to maintain the sealing performance between the dust collecting part 4 and the dust collecting bag 81 (see Figure 2 ). The sealing member 56 comprises: a cylindrical base portion 56a mounted on the periphery of the inlet 45 of the dust collecting portion 4; a first cylindrical rib 56b provided at the lower end of the cylindrical base portion 56a and protruding toward the inner side of the dust collecting portion 4; an annular lip 56c provided around the first cylindrical rib 56b; a protruding piece 56d protruding from a part of the inner surface of the cylindrical base portion 56a toward the central axis 6 of the cylindrical base portion 56a; and a second cylindrical rib 56e provided on the cylindrical base portion 56a and protruding toward the outer side of the dust collecting portion 4. In addition, the sealing property of the connection portion between the suction portion 3 and the dust collecting portion 4 is maintained by the seal 39a.

[0020] Figure 7 1 is a perspective view of the sealing member 56 of the first embodiment viewed from one end side (upper side) in the direction of the central axis 6. In order to easily understand the structure of the sealing member 56, the sealing member 56 will be described based on the state in which it is installed in the dust collecting part 4. Figure 6 and Figure 7As shown, in the sealing member 56, a pair of grooves 56f are provided in front and behind the peripheral portion of the cylindrical base portion 56a. The range of the direction of the central axis 6 occupied by the cylindrical base portion 56a is equivalent to the distance between the lower end surface located at the root of the first cylindrical rib 56b and the upper end surface located at the root of the second cylindrical rib 56e. The boundary between the inner surface of the cylindrical base portion 56a and the inner surface of the first cylindrical rib 56b becomes a smooth continuous surface without steps. A pair of grooves 56f are provided on the outer peripheral surface of the cylindrical base portion 56a between the upper end surface and the lower end surface of the cylindrical base portion 56a. The cylinder member 41a of the surrounding wall 41 of the dust collecting portion 4 has an opening for forming an inlet 45, and a pair of grooves 56f of the sealing member 56 are embedded in the periphery of the opening. The upper end surface of the sealing member 56 that is closer to the inner side than the second cylindrical rib 56e is a step portion 56g. The step portion 56g is equivalent to the upper end surface of the cylindrical base portion 56a. The cover member 41b of the surrounding wall 41 of the dust collecting portion 4 has an annular rib 41c provided in a downwardly protruding shape at the periphery of the opening for forming the inlet 45. The annular rib 41c of the cover member 41b is embedded inside the second cylindrical rib 56e in a manner abutting against the step portion 56g of the sealing member 56. Thus, the sealing member 56 is clamped by the cylindrical member 41a and the cover member 41b.

[0021] Figure 8 1 is a top view of the sealing member of the first embodiment as viewed from one end side (upper side) in the direction of the central axis 6. Figure 6 and Figure 8 As shown, the protruding piece 56d is a tongue-shaped portion that protrudes backward from the front side portion of the inner surface of the cylindrical base portion 56a in a direction roughly perpendicular to the central axis 6. The protruding piece 56d has a front end 56m that exceeds the central axis 6 from the inner surface of the cylindrical base portion 56a. The front end 56m is close to the rear side portion of the inner surface of the cylindrical base portion 56a, and is bent in a manner along the curved inner surface (inner peripheral surface) of the cylindrical base portion 56a. In addition, the protruding piece 56d can also be slightly inclined relative to the central axis 6 to the inner side of the dust collecting portion 4 (the other end side (lower side) in the direction of the central axis 6).

[0022] The protruding piece 56d has a small piece-shaped connecting portion 56i connected to the front side portion of the inner surface of the cylindrical base portion 56a, a pair of approaching edges 56n approaching the cylindrical inner surface of the cylindrical base portion 56a, a front end 56m provided on the opposite side of the direction substantially orthogonal to the central axis 6 relative to the connecting portion 56i, and a pair of separating edges 56p separated from the cylindrical inner surface of the cylindrical base portion 56a. The pair of approaching edges 56n are provided on both sides of the connecting portion 56i in the rotation direction (hereinafter referred to as the circumferential direction) centered on the central axis 6. The pair of separating edges 56p are provided on both sides of the front end 56m in the circumferential direction. The protruding piece 56d and the cylindrical base portion 56a are integrated by the connecting portion 56i. A ventilation gap 56h is provided between the front end 56m of the protruding piece 56d and the inner surface of the cylindrical base portion 56a, and between the pair of separation edges 56p of the protruding piece 56d and the inner surface of the cylindrical base portion 56a. In the ventilation gap 56h, the gap between each separation edge 56p and the inner surface of the cylindrical base portion 56 is wider than the gap between the front end 56m and the inner surface of the cylindrical base portion 56a. In the case of the present embodiment, there is no gap between the pair of approaching edges 56n and the inner surface of the cylindrical base portion 56a, but a narrow gap may be provided.

[0023] Fig. 9 1 is a perspective view of the sealing member of the first embodiment as viewed from the other end side (lower side). Figure 6 and Fig. 9 As shown, the sealing member 56 has a limiting rib 56j on the lower surface of the protruding piece 56d facing the inner side (first cylindrical rib 56b side) of the dust collecting section 4. In the case of the present embodiment, three limiting ribs 56j are arranged on the lower surface of the protruding piece 56d at intervals in the left-right direction, and each limiting rib 56j extends in the front-back direction. The height of each limiting rib 56j in the direction of the central axis 6 continuously increases from the front end 56m of the protruding piece 56d toward the connecting portion 56i. The portion of the connecting portion 56i side of each limiting rib 56j becomes an end bevel 56s that continuously increases in the direction from the connecting portion 56i toward the front end 56m.

[0024] return Figure 6, the annular lip 56c is provided on the outer side of the cylindrical base portion 56a on the lower side near the pair of groove portions 56f. The annular lip 56c includes an inner lip portion 56x on the outer side of the first cylindrical rib 56b and an outer lip portion 56y on the outer side of the inner lip portion 56x. In the inner lip portion 56x, the front end edge of the inner lip portion 56x is bent in a direction (inward) approaching the central axis 6. In the outer lip portion 56y, the front end edge of the outer lip portion 56y is bent in a direction (outward) away from the central axis 6. The sealing member 56 further includes an annular rib 56k between the first cylindrical rib 56b and the inner lip portion 56x. The annular rib 56k protrudes downward from the lower end surface of the cylindrical base portion 56a with a protruding dimension that does not exceed the first cylindrical rib 56b and the inner lip portion 56x. The first cylindrical rib 56b has an inner diameter equal to the inner diameter of the cylindrical base portion 56a and an outer diameter smaller than the inner diameter of the air inlet 83 of the mounting plate 82 of the dust bag 81, and protrudes downward further than the inner lip portion 56x and the outer lip portion 56y. In addition, the opening of the first cylindrical rib 56b may be continuously narrowed toward the lower end, in which case the inner diameter of the lower end of the first cylindrical rib 56b is slightly smaller than the inner diameter of the cylindrical base portion 56a.

[0025] Further, refer to Figure 6 , when the mounting plate 82 of the dust bag 81 is mounted on the dust collecting part 4, the first cylindrical rib 56b of the sealing member 56 is embedded in the air inlet 83 of the mounting plate 82 and protrudes toward the inner side of the dust collecting part 4 (the inner side of the dust bag 81). At this time, the inner lip 56x and the outer lip 56y contact the surface of the mounting plate 82 (the surface on the outer side of the dust collecting part 4), thereby limiting the protrusion of the first cylindrical rib 56b toward the inner side of the dust collecting part 4. In the case of this embodiment, the front end of the first cylindrical rib 56b slightly exceeds the air inlet 83, but does not reach the inside of the bag body 85. In addition, the front end of the first cylindrical rib 56b may also protrude to the extent of being aligned with the back side of the mounting plate 82.

[0026] When the dust bag 81 is arranged in the dust collecting part 4, there is a small gap S between the first cylindrical rib 56b and the air inlet 83, but compared with the case where there is no first cylindrical rib 56b, it is difficult for dust to enter the inner lip 56x side. In addition, the inner lip 56x and the outer lip 56y are in contact with the surface of the mounting plate 82 and double-sealed, thereby further suppressing the dust in the dust bag 81 from leaking to the surface side of the mounting plate 82. In addition, either the inner lip 56x or the outer lip 56y can be omitted, but it is preferred to set both. When the dust bag 81 is arranged in the dust collecting part 4, the annular rib 56k contacts the front end of the inner lip 56x, restricting the bending of the inner lip 56x to the side of the central axis 6, so that the front end of the inner lip 56x will not be too close to the first cylindrical rib 56b. As a result, the mounting plate 82 is more likely to contact the inner lip 56x, and the sealing performance is improved. Furthermore, the annular rib 56k may be omitted, and when the inner lip portion 56x is omitted, the annular rib 56k is also omitted.

[0027] Fig.10 This is a cross-sectional side view showing a state in which air containing dust is caused to flow into the dust collecting bag 81 of the dust collecting unit 4 of the first embodiment, as seen from the left side. Fig.11 Yes Description Figure 6 FIG. 5 is a diagram showing a state in which the front end 56m of the protruding piece 56d of the sealing member 56 is moved to the inner side of the dust collecting unit 4 due to wind pressure. Fig.12 yes Figure 8 A top view of a state in which the front end 56m of the protruding piece 56d of the sealing member 56 is moved to the inner side of the dust collecting portion 4 due to wind pressure. Figure 2 ) generates suction force, the air containing dust flows from the outer side of the dust collecting section 4 to the inner side via the inlet 45. Due to the wind pressure at this time, the connecting portion 56i is elastically deformed (bent), and the front end 56m of the protruding piece 56d of the sealing member 56 moves to the inner side of the dust collecting section 4, and the protruding piece 56d is inclined toward the other end side (lower side) relative to the central axis 6. As a result, the ventilation gap 56h in the sealing member 56 is greatly expanded. At this time, in the present embodiment, there is no gap between the pair of close edges 56n of the sealing member 56 and the inner surface of the cylindrical base portion 56a, but a narrow gap can also be formed.

[0028] When the protruding piece 56d is in an inclined state, the end portions of the plurality of limiting ribs 56j on the side of the connecting portion 56i abut against the inner surface of the cylindrical base portion 56a or the inner surface of the first cylindrical rib 56b, thereby limiting the movement of the protruding piece 56d so that the front end 56m of the protruding piece 56d does not tilt too much. In the case of the present embodiment, the limiting ribs 56j abut against the inner surface of the cylindrical base portion 56a and the inner surface of the first cylindrical rib 56b, and the movement of the protruding piece 56d to the inner side of the dust collecting portion 4 is limited to maintain the state where the protruding piece 56d and the central axis 6 are inclined and intersected. The protruding piece 56d is inclined downward from the state before the inclination, for example, at an angle range of about 25 to 30 degrees.

[0029] Reference Fig.10 , an exhaust opening 61 is provided at a position of the inlet 45 at the rear of the surrounding wall 41 of the dust collecting part 4, and the front end 56m of the protruding piece 56d is inclined toward the exhaust opening 61 toward the inner direction of the dust collecting part 4, and the front end 56m of the protruding piece 56d moves to the inside of the dust collecting bag 81 below the first cylindrical rib 56b. As a result, as shown by arrow B, the air containing dust easily flows from the ventilation gap 56h of the sealing member 56 to the rear inner surface 56q of the bag body 85. Assuming that the air containing dust flows linearly toward the lower inner surface 56r of the bag body 85 directly below the inlet 45, the distance from the lower end of the first cylindrical rib 56b to the lower inner surface 56r is shorter than the distance from the lower end of the first cylindrical rib 56b to the rear inner surface 56q, so a large amount of dust hits the lower inner surface 56r violently. As a result, fine dust easily passes through the lower inner surface 56r and is exposed to the outer surface. In this embodiment, in order to suppress such a situation, a large amount of dust is guided to flow toward the rear inner surface 56q of the bag body 85 by the protruding piece 56d.

[0030] Dust flows into the bag body 85, and sometimes dust flies near the air inlet 83 of the mounting plate 82, but it is difficult for dust to enter the narrow gap S between the first cylindrical rib 56b and the air inlet 83. Moreover, the surface of the mounting plate 82 around the air inlet 83 is sealed with the annular lip 56c (the inner lip 56x and the outer lip 56y). Therefore, it is difficult for dust to leak to the outside of the dust bag 81 through the gap S. When air containing dust flows into the dust bag 81, the bag body 85 expands to a certain extent. When dust is fully accumulated in the bag body 85, the bag body 85 is almost completely expanded and unfolded. At this time, since the dimension of the bag body 85 in the front-to-back direction is larger than the dimension in the left-to-right direction, the bag body 85 expands greatly in the front-to-back direction.

[0031] return Figure 5 The opening end 51 of the peripheral wall 41 crosses the central axis 24 obliquely, and the cover body 42 in a state where the opening end 51 is closed also crosses the central axis 24 obliquely (refer to Figure 2).like Figure 5 As shown, when viewed from the left side (the direction of observing the cross section), the opening end 51 crosses the central axis 24 obliquely so as to form an acute angle with the protruding edge 52. The first locking portion 58 of the locking portion 43 is provided on the protruding edge 52, and the cover body 42 is mounted on the receding edge 53 via the hinge portion 55. The inclination of the opening end 51 is such that the hinge portion 55 provided on the receding edge 53 is located slightly offset to the rear than directly below the inlet 45. A locking recess 59 is provided at the end of the cover body 42 on the opposite side to the hinge portion 55, and the first locking portion 58 is locked with the locking recess 59 of the closed cover body 42 (refer to Figure 4 ).

[0032] The opening end 51 is not at a right angle to the central axis 24 but crosses obliquely, thereby suppressing the opening size of the opening end 51 in the vertical direction while increasing the opening area of ​​the opening end 51. As a result, the inside of the surrounding wall 41 is easy to see, the user's hand can easily enter the opening end 51, and the dust bag can be easily set at the dust bag setting position (the position of the recessed portion 73) in the surrounding wall 41, thereby improving convenience. Furthermore, even if the opening size of the opening end 51 in the vertical direction is small, the opening end 51 can be opened widely, so even if the dust bag is fully accumulated and greatly expanded, it can be easily taken out from the surrounding wall 41.

[0033] like Figure 5 As shown, in the case of the present embodiment, when viewed from the left side (the direction of observing the cross section), the exhaust opening 61 is inclined in the same direction as the opening end 51 and obliquely intersects with the central axis 24, but the inclination of the exhaust opening 61 is closer to a right angle relative to the central axis 24 than the inclination of the opening end 51. In addition, in the surrounding wall 41 of the dust collecting section 4, the length L1 in the direction of the central axis 24 from the protruding edge 52 on the cover body 42 side to the end on the exhaust opening 61 side is longer than the length L2 in the direction of the central axis 24 from the receding edge 53 on the cover body 42 side to the end on the exhaust opening 61 side. Based on the expansion mode of the dust bag provided in the dust collecting section 4, the opening end 51 is inclined and the length L1 is longer than the length L2. This will be described in detail later.

[0034] Fig.13 1 is a perspective view of the dust collecting portion 4 of the first embodiment as viewed from obliquely below. Fig.13As shown, an exhaust opening 61 is provided at the rear end in the direction of the central axis 24 of the surrounding wall 41 of the dust collecting part 4. A hinge portion 55 is provided on the lower surface (retracted edge portion 53) of the surrounding wall 41 on the opposite side of the exhaust opening 61, and the hinge portion 55 connects the cover body 42 and the surrounding wall 41 to be openable and closed. A locking mechanism 66 and a surrounding wall 67 covering the locking mechanism 66 are provided on the lower surface of the exhaust opening 61 side of the surrounding wall 41. The locking mechanism 66 includes a pair of locking claws 63, a lock release lever 64, and a force applying member 65 (see Figure 5 ). A pair of locking claws 63 protrude outward from a pair of holes provided on the end surface of the surrounding wall 67 on the exhaust opening 61 side. The pair of locking claws 63 are urged to protrude in an outward direction (outward direction of the surrounding wall 67) substantially parallel to the central axis 24 by the action of a force applying member 65 (e.g., a compression spring) in the surrounding wall 67. The pair of locking claws 63 are connected to the lock release lever 64, and by pulling the lock release lever 64 to the side opposite to the direction in which the locking claws 63 protrude outward, the pair of locking claws 63 overcome the force of the force applying member 65 and are inserted into the interior of the surrounding wall 67.

[0035] Fig.14 It is a perspective view showing a state where the cover 42 of the dust collecting unit 4 according to the first embodiment is opened. Fig.14 The dust collecting unit 4 is shown in the state before the dust collecting bag 81 is installed. The opening end 51 of the peripheral wall 41 opposite to the exhaust opening 61 is opened or closed by the cover 42. The outer peripheral end of the cover 42 in contact with the opening end 51 of the peripheral wall 41 is provided with a seal 71. Fig.14 FIG. 4 shows a state in which a pair of second locking portions 72 of a locking portion described later penetrates the surrounding wall 41 and protrudes into the dust collecting portion 4. FIG.

[0036] The inner surface of the back side of the groove 44 of the surrounding wall 41 is a shallow rectangular recess 73 for mounting the mounting plate 82 of the dust bag. A positioning rib 74 is provided at the rear end of the recess 73 to position the mounting plate 82. The positioning rib 74 receives the rear end 82a ( Fig.16 , refer to Fig.18A ) and positioned on the recess 73.

[0037] A plurality of ribs 75 extending in a direction substantially parallel to the central axis 24 of the surrounding wall 41 are provided on the inner surface of the surrounding wall 41. The plurality of ribs 75 extend from the surrounding portion of the exhaust opening 61 along the inner surface of the surrounding wall 41 in a direction substantially parallel to the central axis 24, and are formed into a substantially right triangle whose height increases as it moves from the opening end 51 side toward the exhaust opening 61 side. Further, a pressing mechanism 76 including a contact portion 76a is provided at a front position on the left side of the recessed portion 73 (see Fig.15 ), a contact piece 77 capable of abutting against the contact portion 76a is provided on the inner surface of the cover body 42.

[0038] Fig.15 This is a diagram showing that the dust bag 81 (see Fig.10 ) is a sectional side view of the pressing mechanism 76 provided in front of the dust collecting section 4 as viewed from the left side. The abutting portion 76a of the pressing mechanism 76 is a rod-shaped or plate-shaped component extending in the front-to-back direction, and a shaft portion 76b in the left-right direction is provided at the rear end side of the middle of the abutting portion 76a in the front-to-back direction. The front end of the abutting portion 76a can protrude toward the inner side of the dust collecting section 4 from the opening 78 formed on the left side of the recessed portion 73 of the dust collecting section 4. The pressing mechanism 76 also includes a force applying component 76c that applies force to the rear end of the abutting portion 76a so that the front end of the abutting portion 76a protrudes toward the inner direction of the dust collecting section 4. Fig.15 In the figure, a compression coil spring is illustrated as the force applying member 76c, but it may be a torsion coil spring provided on the shaft portion 76b. When the cover (42) is to be closed without the dust bag 81 provided on the dust collecting portion 4, the contact piece 77 of the cover 42 hits the contact portion 76a of the pressing mechanism 76, and the cover 42 is not closed. Through this mechanism, the user can recognize that the dust bag is forgotten to be provided on the dust collecting portion 4.

[0039] Fig.16 The dust collecting bag 81 is provided in the dust collecting portion 4 with the cover 42 of the first embodiment opened (see Fig.10 )'s state. Fig.17 1 is a cross-sectional side view showing the pressing mechanism 76 after the dust collecting bag 81 of the first embodiment is installed in the dust collecting unit 4, as viewed from the left side. Fig.16 and Fig.17 In the figure, only the mounting plate 82 is shown with respect to the dust bag 81. When the dust bag 81 is set in the dust collecting part 4, the abutment portion 76a of the pressing mechanism 76 pressed by the left side portion of the mounting plate 82 (the second protrusion 87 described later) moves upward (inside the wall of the surrounding wall 41) against the force of the force-applying member 76c. As a result, even if the cover body 42 is closed, the abutment sheet 77 does not hit the abutment portion 76a, so the cover body 42 can be closed. At this time, the front end of the second protrusion 87 of the mounting plate 82 abuts against the small protrusion 76d provided at the lower part of the front end of the abutment portion 76a.

[0040] Fig.18A The dust collecting part 4 (see Fig.10 ) is a top view of the dust bag 81 before use. Fig.18B yes Fig.18A The left side view of the dust bag 81 is not provided in the dust collecting part 4 (refer to Fig.14 ) is in a folded state before use. The dust bag 81 includes a bag body 85 having an opening 84 and a mounting plate 82 provided at the opening 84 of the bag body 85.

[0041] The bag body 85 is formed into a bag shape by a breathable material such as paper, woven fabric, non-woven fabric, etc. The mounting plate 82 is formed by hard paper, resin, etc., and has an air inlet 83 connected to the opening 84 of the bag body 85. In the folded state, when viewed from the side of the mounting plate 82, the bag body 85 is a roughly rectangular shape in which the dimension L3 in one direction is larger than the dimension L4 in the direction orthogonal to the one direction. The mounting plate 82 is arranged on the surface of the roughly rectangular shape (the surface with the opening 84). The opening 84 of the bag body 85 is arranged closer to one end side than the center in the longitudinal direction parallel to one direction of the bag body 85. In addition, as the capacity of the dust bag 81, it is preferably a capacity that can collect one day's worth of garbage for at least 30 days, and the one day's worth of garbage is based on the amount established by the "Japan Electrical Manufacturers' Association (JEMA)".

[0042] The mounting plate 82 has a surface exposed to the outside and a back surface opposite to the surface, and the peripheral portion of the back surface is fixed to the peripheral portion of the opening 84 of the bag body 85 by, for example, an adhesive. The planar shape of the mounting plate 82 is a shape in which the outer periphery is partially protruding from a substantially square. The mounting plate 82 has a first protrusion 86 on one end side and a second protrusion 87 in a direction orthogonal to the long side direction of the bag body 85. In the case of the present embodiment, the first protrusion 86 in the mounting plate 82 of the dust collecting bag 81 provided in the dust collecting section 4 is located between a pair of second stop portions 72 of the locking portion 43, and the pair of second stop portions 72 are stoppered to the front ends 86a on both sides of the first protrusion 86 (see Fig.16 ). At this time, one end side of the mounting plate 82 becomes the front end 86a, and the other end side of the mounting plate 82 becomes the rear end 82a.

[0043] Further, when the mounting plate 82 is disposed in the dust collecting portion 4, the second protrusion 87 is located on the left side (refer to Fig.16 ). When setting, the second protrusion 87 presses the contact portion 76a of the pressing mechanism 76, and the contact portion 76a remains pressed. Afterwards, when the cover 42 is closed, even if the rear end 82a of the mounting plate 82 is not pressed to the position of the positioning rib 74 of the recess 73, the contact piece 77 that rotates together with the cover 42 contacts the front end 86a of the mounting plate 82 and presses the mounting plate 82, so that the rear end 82a of the mounting plate 82 moves to the position of the positioning rib 74 of the recess 73 (see Fig.16 Then, as described above, the contact piece 77 does not contact the contact portion 76a, and the cover 42 is closed (see Fig.17 Before the cover 42 is completely closed, the contact piece 77 is separated from the front end 86 a of the mounting plate 82 and moves to the back side of the mounting plate 82 .

[0044] Fig.194 is an explanatory diagram when the dust bag 81 is provided in the dust collecting section 4 of the first embodiment. When the dust collecting section 4 is provided with the dust collecting bag 81, the cover 42 side of the central axis 24 of the dust collecting section 4 is maintained in a state facing upward with the cover 42 opened ( Fig.19 The central axis 24 of the dust collecting section 4 is in a substantially vertical state, but the central axis 24 may also be inclined relative to the vertical when the cover body 42 is in a state of being at the bottom) so that it is easy to install. At this time, since the cover body 42 is configured to be opened more than 90 degrees, it can maintain the open state due to its own weight. In this state, the other end 85a of the bag body 85 of the dust collecting bag 81 is placed inside the surrounding wall 41, and the mounting plate 82 is placed in the recess 73. At this time, if the operating portion 91 of the locking portion 43 is pressed in the direction of the arrow 92, the pair of second stop portions 72 rotate so that they will not fall to the edge side of the opening end 51 and become an obstacle. Even if the operating portion 91 is not continuously pressed, the mounting plate 82 can be simply placed in the recess 73 as follows. That is, by pressing the pair of second stop portions 72 on the mounting plate 82 to the edge side of the opening end 51, the mounting plate 82 is inserted into the dust collecting section 4, so that the mounting plate 82 can be set in the recess 73. In more detail, the mounting plate 82 is moved until the rear end 82a of the mounting plate 82 is embedded in the groove between the inner side of the recess 73 and the positioning rib 74. If the mounting plate 82 is pressed toward the inner side of the second stopper 72, the second stopper 72 is pushed by the mounting plate 82 and rotates. When the front end 86a of the mounting plate 82 passes over the second stopper 72, the pair of second stoppers 72 returns to the original position (stop position), and the pair of second stoppers 72 is stopped at the front end 86a of the mounting plate 82 (refer to Fig.16 ).

[0045] When the dust bag 81 is installed, the rear end 85a of the bag body 85 moves along the rib 75, whereby the other end 82a of the mounting plate 82 is away from the bag body 85, so that it is easy to see the other end 82a of the mounting plate 82 and the positioning rib 74. Therefore, the other end 82a of the mounting plate 82 can be easily inserted into the groove between the inner side of the recess 73 and the positioning rib 74 for installation.

[0046] Here, the flow of air during the cleaning preparation and operation of the electric vacuum cleaner of this embodiment is described. As described above, the dust collecting bag 81 is provided in the dust collecting section 4, and after closing the cover 42, the dust collecting section 4 is mounted on the holding section 312 ( Figure 3 , refer to Fig.13 At this time, the lower end of the holding portion 312 of the suction portion 3 is embedded in the groove 44 of the dust collecting portion 4, thereby limiting the movement of the dust collecting portion 4 relative to the holding portion 312 in the left and right directions. Figure 4 ) hooked on the locking hook 310, the exhaust opening 61 side of the dust collecting part 4 (refer to Fig.13 ) rotates upward and approaches the air intake port 36 of the suction part 3 from the front and obliquely downward.

[0047] A convex portion 32a is provided near the base of the rod-shaped portion 32 on the surface having the air inlet 36 of the housing 21 of the suction portion 3 (see Figure 3 ). Furthermore, a cutout recess 50 is provided near the locking recess 59 of the cover 42 of the dust collecting portion 4 (see Figure 5 ). Therefore, when the dust collecting part 4 is rotated and the notched recessed portion 50 is installed on the holding portion 312 of the suction part 3 in a state of being hooked on the locking hook 310, the groove 44 on the exhaust opening 61 side of the dust collecting part 4 is embedded in the convex portion 32a, thereby limiting the movement of the dust collecting part 4 in the left and right directions relative to the holding portion 312. In addition, before the lower end of the holding portion 312 is embedded in the groove 44 of the dust collecting part 4, the groove 44 on the exhaust opening 61 side of the dust collecting part 4 is embedded in the convex portion 32a, thereby also serving as a guide when the lower end of the holding portion 312 is embedded in the groove 44 of the dust collecting part 4. Furthermore, a pair of locking claws 63 (refer to Fig.13 ) and a pair of engaging recesses 37 on the air inlet 36 side of the suction unit 3 (see Figure 3 ) is engaged. Thus, the movement of the dust collecting section 4 in the left-right direction relative to the lower side of the holding section 312 is restricted. In addition, in a state where the dust collecting section 4 is mounted on the holding section 312, a gap is provided between the surface of the housing 21 having the air intake port 36 and the surface of the dust collecting section 4 having the exhaust opening 61. Therefore, in a state where the dust collecting section 4 is mounted on the holding section 312, if the dust collecting section 4 is pressed along the central axis 24 toward the surface of the housing 21 having the air intake port 36, the dust collecting section 4 can move toward the surface side of the housing 21 having the air intake port 36.

[0048] By providing such a gap, the possibility of contact between the surface of the housing 21 having the air inlet 36 and the surface of the dust collecting part 4 having the exhaust opening 61 before the installation is completed can be reduced, and the dust collecting part 4 can be easily installed on the holding part 312. In addition, although not shown, marks of the same color are respectively provided near the notch recess 50 of the cover body 42 and the stop hook 310 of the holding part 312. Thus, when the dust collecting part 4 is installed on the holding part 312, it is easy for the user to understand that the notch recess 50 is locked with the stop hook 310. In the dust collecting part 4 installed on the holding part 312 of the suction part 3, the operating part 91 of the locking part 43 is hidden by the holding part 312, so it cannot be pressed from the outside, and the stop hook 310 of the holding part 312 is locked to the notch recess 50 of the cover body 42 of the dust collecting part 4, so the cover body 42 will not be accidentally opened during the operation of the electric vacuum cleaner 1. In addition, there is a gap between the first stopper 58 of the dust collecting section 4 and the lower end of the holding section 312 of the suction section 3. It is assumed that for some reason, in the dust collecting section 4 installed on the holding section 312 of the suction section 3, the operating section 91 is rotated downward, but even if the first stopper 58 is rotated upward until it contacts the lower end of the suction cylinder section 33, it becomes a structure that maintains the state in which the first stopper 58 is locked to the locking recess 59 of the closed cover body 42, so the cover body 42 is not opened. As such a situation, for example, when the dust collecting section 4 of the suction section 3 is installed, it is assumed that a foreign object is sandwiched between the holding section 312 and the operating section 91.

[0049] By installing the dust collecting part 4 on the suction part 3, the seal 39a of the connection port 39 of the suction part 3 contacts the protruding rib-shaped surrounding portion of the inlet 45 in the groove 44 of the dust collecting part 4, and the connection port 39 is connected to the inlet 45 (see Figure 2 Figure 4 ). In addition, the seal 36a provided at the periphery of the air inlet 36 of the suction unit 3 is in contact with the periphery of the exhaust opening 61 of the dust collecting unit 4, and the exhaust opening 61 is connected to the air inlet 36 ( Figure 2 , Figure 3 , refer to Fig.13 ). In addition, Figure 2As shown, the surface of the housing 21 having the air inlet 36 and the surface of the dust collecting part 4 having the exhaust opening 61 are surfaces inclined relative to the central axis 24. At this time, the electric suction machine 22 is arranged in an inclined manner in which the front part is located lower than the rear part, so that the central axis 24 intersects with the central axis of the electric suction machine 22 near the air inlet 36. By setting it as such a configuration, it is possible to ensure that the area of ​​the air inlet 36 is large. In addition, a pre-filter not shown is provided on the air inlet 36. The pre-filter is embedded in an annular groove not shown in the figure provided on the surrounding wall of the air inlet 36. By adopting such a structure, the possibility of the pre-filter falling when the dust collecting part 4 is removed from the retaining part 312 can be reduced. In addition, the pre-filter can be retained by using a plurality of protrusions protruding from the surrounding wall of the air inlet 36 instead of the annular groove. In addition, the operating part 91 of the locking part 43 of the dust collecting part 4 is accommodated in the recess 311 of the retaining part 312 of the suction part 3. In this way, the dust collecting portion 4 is held by the holding portion 312 in a state where the operation portion 91 faces the holding portion 312 of the suction portion 3 .

[0050] exist Figure 2 In the figure, the dust bag in the dust collecting part 4 is omitted, but the case where the dust bag is provided is described. After the dust collecting part 4 provided with the dust bag is installed in the suction part 3 as described above, when the operation button part 23 is operated to drive the electric suction machine 22, the dust collecting part 4 becomes negative pressure and generates suction force. Due to the suction force, the dust-containing air flows into the suction cylinder part 33 from the suction port 2 of the suction part 3, and the dust-containing air flows into the dust collecting bag through the connection port 39 and the inlet 45 of the dust collecting part 4. The dust flowing into the dust collecting bag is captured in the bag body, and the air from which the dust is removed flows into the electrical component storage part 31 from the air intake port 36 of the suction part 3, and is discharged to the outside from the exhaust port 38 through the electric suction machine 22. At this time, fine dust sometimes passes through the bag body, so a filter can also be provided at the air intake port 36. Sometimes such fine dust adheres to the outer surface of the bag body, but in the electric vacuum cleaner 1 of this embodiment, the user can discard it into a trash can without holding the dust bag by hand. This will be described in detail later.

[0051] In this embodiment, dust is likely to accumulate in the space behind the air inlet 83 in the dust bag 81 (see Fig.10). Therefore, in the dust bag 81 of the present embodiment, it is ensured that the space behind the air inlet 83 is wider and the space in front of the air inlet 83 is narrower, wherein dust is difficult to accumulate in front of the air inlet 83. Furthermore, in the space in front of the air inlet 83 of the dust bag 81, dust is more likely to accumulate in the space near the air inlet 83 than in the space far from the air inlet 83. Thus, the space near the air inlet 83 (upper space) is larger than the space far from the air inlet 83 (lower space). Therefore, according to the dust collecting part 4, the closed cover body 42 is aligned with the central axis 24 (refer to FIG. 2 ) of the dust collecting part 4 when viewed from the left side (the direction of observing the cross section) in a shape that matches the shape of the dust bag 81 in a state in which it is substantially fully expanded. Figure 2 ) form the internal space of the dust collecting section 4 in an oblique and cross manner, thereby, it is not easy to produce a dead angle in the front lower part of the dust collecting section 4. Figure 5 As described in the figure, in the surrounding wall 41 of the dust collecting section 4, the length L1 in the direction of the central axis 24 from the protruding edge 52 on the cover body 42 side to the end on the exhaust opening 61 side is longer than the length L2 in the direction of the central axis 24 from the receding edge 53 on the cover body 42 side to the end on the exhaust opening 61 side.

[0052] Fig. 20 This is a perspective view showing a state in which the lock portion 43 of the dust collecting portion 4 according to the first embodiment is exposed to the outside. Fig. 20 The cover member 41b (see FIG. Figure 4 The locking portion 43 includes: a first locking portion 58 that can be engaged and disengaged to lock the closed cover 42; and a pair of second locking portions 72 (see Fig.16 ), which is engaged and disengaged with the mounting plate 82 of the dust bag 81; a linkage mechanism 93, which links the first locking portion 58 and the second locking portion 72; and an operating portion 91, which is operated to activate the linkage mechanism 93. The linkage mechanism 93 has a first portion 94 and a second portion 95.

[0053] Fig.21 It is an explanatory diagram showing a locked state of the lock portion 43 of the dust collecting portion 4 according to the first embodiment. Fig. 22 It is an explanatory diagram showing a first operation of the interlocking mechanism 93 of the lock portion according to the first embodiment. Fig.23 It is an explanatory diagram showing the second operation of the interlocking mechanism 93 of the lock portion 43 according to the first embodiment. Fig.21 Fig.23 The dust collecting bag 81 with accumulated dust is discarded. In addition, in order to facilitate understanding of the mechanism of the linkage mechanism 93, Figure 21 to Figure 23 A simplified structural diagram.

[0054] like Fig.21 As shown, in the linkage mechanism 93, the first portion 94 is integrated with the first stop portion 58, and the second portion 95 is integrated with a pair of second stop portions 72 (see Fig.14 The first part 94 can rotate around a first axis 96 extending in a direction orthogonal to the direction of the central axis 24 of the cylinder part 41a of the surrounding wall, and the second part 95 can rotate around a second axis 97 parallel to the first axis 96. Fig. 20 As shown, the first part 94 has a hole portion 94a at the position of the inlet 45 and the sealing member 56, and has a pair of left and right first pivot portions 96a on the first shaft 96 on the left and right sides of the outer side of the hole portion 94a. The second shaft 97 is located slightly forward of the first shaft 96, and the second part 95 has a pair of left and right second pivot portions 97a on the second shaft 97. In this specification, integration is not limited to a structure in which the first part 94 and the first stop portion 58 are physically integrated, but also includes a structure in which the first part 94 and the first stop portion 58 are connected by other parts, and when the first part 94 moves, the first stop portion 58 moves simultaneously or substantially simultaneously. Further, in this specification, integration is not limited to a structure in which the second part 95 and the pair of second stop portions 72 are physically integrated, but also includes a structure in which the second part 95 and the pair of second stop portions 72 are connected by other parts, and when the second part 95 moves, the pair of second stop portions 72 move simultaneously or substantially simultaneously.

[0055] like Fig.21 As shown, the end of the first portion 94 on the opposite side to the first locking portion 58 is integrated with the button-shaped operating portion 91. Further, the linkage mechanism 93 has a peripheral wall 41 (see Figure 5 ) and a force-applying member 98 (e.g., a compression spring) between the cylinder member 41a and the operating portion 91. The second portion 95 includes: a connecting portion 99, which passes through a lower portion that is closer to the front than the hole portion 94a of the first portion 94 and is connected to a pair of left and right second pivot portions 97a; and a pair of left and right abutment pieces 101, which are provided on the connecting portion 99, and the pair of left and right abutment pieces 101 and the pair of left and right second stop portions 72 are integrated. Furthermore, the first portion 94 includes a pair of left and right action pieces 102, and the pair of left and right action pieces 102 can abut against the pair of left and right abutment pieces 101 of the second portion 95. And, as Fig.21 As shown, in the locked state, a gap X is provided between the contact piece 101 and the action piece 102 .

[0056] like Fig.21 As shown, on the cylinder member 41a, at the inlet 45 (refer to Fig.19) and between the inlet 45 and the cover 42, a pair of left and right through holes 103 are provided, and a sealing member 104 having radial cutouts is installed around the pair of left and right through holes 103. When the cover 42 of the dust collecting section 4 is closed, the first portion 94 of the linkage mechanism 93 is urged by the force member 98 in a direction to move the operating portion 91 away from the cylinder member 41a, and therefore, the first stopper 58 is urged in a direction to be stopped by the stopper recess 59 of the cover 42. In addition, at this time, the second portion 95 is pressed toward the cylinder member 41a side by the first portion 94, and thereby, the pair of left and right second stoppers 72 protrude toward the inside of the cylinder member 41a through the cutout of the sealing member 104, and are stopped by the front end 86a of the mounting plate 82 of the dust collecting bag 81 provided inside the dust collecting section 4.

[0057] The linkage mechanism 93 is configured to link a first action of disengaging the first locking portion 58 from the locking recess 59 of the cover body 42 and a second action of disengaging the pair of left and right second locking portions 72 from the mounting plate 82 of the dust bag 81. Fig. 22 as well as Fig.23 As shown, the linkage mechanism 93 is in action. Fig. 22 As shown, first, the following first action is performed: when the operating part 91 is gently pressed in the direction of the arrow 92, the first part 94 rotates in the direction of the arrow 105 with the first shaft 96 as the center, and the first stopper 58 is separated from the stopper recess 59 of the cover body 42. For example, when the central axis 24 of the dust collecting part 4 is oriented in a substantially vertical direction and the cover body 42 is oriented downward, the cover body 42 is opened due to its own weight, and the opening end 51 of the dust collecting part 4 is opened. In the case of this embodiment, in the first action, the pair of action pieces 102 of the first part 94 press the pair of contact pieces 101 of the second part 95, thereby, the second part 95 rotates slightly in the direction of the arrow 106 with the second shaft 97 as the center. At this time, due to the gap X, after the first part 94 starts to rotate, the second part 95 rotates slightly delayed. Therefore, the pair of second stoppers 72 connected to the second part 95 also rotate slightly in the direction of the arrow 106, but the pair of second stoppers 72 maintain the state of being stopped on the mounting plate 82 of the dust collecting bag 81. Alternatively, a biasing member (not shown) for biasing the cover 42 in the direction of opening may be provided on the hinge 55. In this case, when the first locking portion 58 is disengaged from the locking recess 59 of the cover 42, the cover 42 is biased by the biasing member to open.

[0058] like Fig.23As shown, if the operating portion 91 is further pressed in the direction of the arrow 92, the first portion 94 is further rotated in the direction of the arrow 105 around the first axis 96, thereby the pair of action pieces 102 of the first portion 94 further press the pair of contact pieces 101 of the second portion 95. As a result, the following second action is performed: the second portion 95 and the pair of second stopper portions 72 are further rotated in the direction of the arrow 106 around the second axis 97, and the pair of second stopper portions 72 are detached from the mounting plate 82 of the dust bag 81. Through the second action, as shown in FIG. Fig.24 As shown in FIG. 1 , the dust bag 81 with accumulated dust naturally falls downward from the open end 51 of the dust collecting part 4 due to its own weight. Therefore, the user does not need to grab the dust bag 81 and discard it, and the user's hands will not be dirty by grabbing the dust bag 81. Further, when the pair of second stoppers 72 are detached from the mounting plate 82 of the dust bag 81, the contact part 76a (refer to FIG. 1 ) of the pressing mechanism 76 is pressed. Fig.15 ) presses the mounting plate 82, and the mounting plate 82 moves in a direction away from the second stopper 72 (inside the dust collecting section 4). At this time, the force applying member 76c of the pressing mechanism 76 moves toward the air inlet 83 (refer to Figure 6 ) direction, the abutment portion 76a is forced, so that the air inlet 83 of the mounting plate 82 is easily pulled out from the first cylindrical rib 56b (refer to Figure 6 Therefore, when the dust bag 81 falls freely (falls naturally), the mounting plate 82 is unlikely to come into contact with the second stopper 72 and the first cylindrical rib 56b, and can fall smoothly.

[0059] According to the linkage mechanism 93 of the present embodiment, the first action and the second action are linked in a time-difference manner so that after the first stopper 58 is disengaged from the cover body 42, the second stopper 72 is disengaged from the mounting plate 82 of the dust bag 81. At this time, the slight rotation of the second stopper 72 during the first action is a preparatory action before the second action. According to the dust collecting part 4 of the present embodiment, for example, when the central axis 24 of the dust collecting part 4 is oriented in a substantially vertical direction and the cover body 42 is oriented downward, the cover body 42 is fully opened by the first action of the linkage mechanism 93, and then the dust bag 81 falls naturally by the second action of the linkage mechanism 93, so that the dust bag 81 can be smoothly discarded without contacting the cover body 42. When discarding the dust bag 81, for example, the operating part 91 of the locking part 43 can be pressed in an upward state in a state where the central axis 24 of the dust collecting part 4 is oriented in a substantially horizontal direction to open the cover body 42. At this time, since the hinge part 55 is located at the lower part of the opening end 51, the cover body 42 is easily opened by its own weight. Then, when the pressing of the operation portion 91 stops, the lock portion 43 performs an operation substantially opposite to the above-described operation.

[0060] In this embodiment, the interval of the gap X between the action piece 102 of the first part 94 and the contact piece 101 of the second part 95 in the linkage mechanism 93 can be adjusted to an interval at which the contact piece 101 and the action piece 102 do not contact each other at the time point when the first stopper 58 is separated from the stopper recess 59 of the cover body 42. In this case, the slight rotation of the second stopper 72 during the first action can be eliminated, so the time until the second stopper 72 is separated from the mounting plate 82 after the cover body 42 is opened can be extended. By adjusting the interval of the gap X in this way, the time until the second stopper 72 is separated from the mounting plate 82 after the cover body 42 is opened can be adjusted. Therefore, even if the user presses the operating part 91 in the direction of the arrow 92 at once, it is possible to avoid a situation where the dust bag 81 falls and is hooked on the cover body 42 before the cover body 42 is fully opened.

[0061] Furthermore, according to the electric vacuum cleaner 1 of this embodiment, Figure 2 As shown, the electric vacuum cleaner 1 is configured so that after cleaning, the central axis 24 of the dust collecting part 4 is approximately horizontal, and when the dust collecting part 4 is removed from the suction part 3 by releasing the lock of the locking mechanism 66, the inlet 45 of the dust collecting part 4 can be removed upward. Figure 2 In the embodiment, the central axis 24 of the dust collecting section 4 is oriented in a substantially horizontal direction, but the dust collecting section 4 may be removed in a state where the inlet 45 of the dust collecting section 4 is oriented upward (including obliquely upward), or the central axis 24 of the dust collecting section 4 is inclined relative to the substantially horizontal direction. Figure 4 , refer to Figure 5 ) is partially missing, or even if the protruding piece 56d is not provided, the dust in the dust bag is difficult to leak out from the inlet 45 to the outside. In addition, after the dust bag is discarded, the dust collecting part 4 can be washed with water to keep it clean.

[0062] (Second Embodiment) Fig.25 2 is an explanatory diagram showing an electric vacuum cleaner according to a second embodiment. Fig.25 In, with Figure 4 The same elements are denoted by the same reference numerals. In the first embodiment, a handheld or stick-type electric vacuum cleaner 1 is exemplified (see Figure 1 ), but in the second embodiment, the Fig.25 The electric vacuum cleaner 114 of the canister type shown in FIG. Specifically, the electric vacuum cleaner 114 includes the dust collecting portion 4 of the first embodiment and a suction portion 116, and the suction portion 116 includes a holding portion 115 on which the dust collecting portion 4 is detachably mounted. Fig.25 In the figure, the dust collecting part 4 is simplified.

[0063] The suction unit 116 includes: a housing 119 having a pair of left and right wheels 117 and a front wheel 118; a power supply unit (not shown) that is housed in the housing 119 and supplies power to the electric suction machine (not shown). The power supply unit can be a reel with a plug that can be connected to a battery or a commercial power source (socket). The frame 119 also includes: a suction connection port 120, which is provided at the lower part of the front end; a handle 121, which is provided at the upper part of the front end; and a recess 122, which is provided behind the handle 121, and a cylindrical retaining portion 115 is provided behind the recess 122.

[0064] The holding portion 115 has a front opening 123 connected to the recess 122, a connection port 124 provided on the upper inner surface near the front opening 123, and an air intake port 125 provided on the inner side of the holding portion 115, and an exhaust port (not shown) is provided at the rear end of the holding portion 115. Furthermore, in the suction portion 116, the suction connection port 120 is connected to the connection port 124 through a ventilation path 126, and the air intake port 125 is connected to the exhaust port (not shown) through another ventilation path (not shown), and an electric suction machine (not shown) is provided in the other ventilation path. A connection hose (not shown) is connected to the suction connection port 120, and the connection hose (not shown) is formed by connecting the suction port body, the extension tube, and the flexible hose.

[0065] like Fig.25 As shown, the dust collecting unit 4 can be attached and detached relative to the holding unit 115 of the suction unit 116 in the direction of the arrow 127. When the dust collecting unit 4 is mounted on the holding unit 115 of the suction unit 116, the inlet 45 of the dust collecting unit 4 is connected to the connection port 124 of the holding unit 115, and the exhaust opening 61 of the dust collecting unit 4 is connected to the air inlet 125 of the holding unit 115. When the adsorption tank type electric vacuum cleaner 114 is driven, the air containing dust from the ventilation path 126 flows into the dust bag in the dust collecting unit 4 through the connection port 124 and the inlet 45, and the dust is captured in the dust bag. The air from which the dust is removed is discharged to the outside through the exhaust opening 61 of the dust collecting unit 4, the air inlet 125 of the holding unit 115, and other ventilation paths. After cleaning, the dust collecting unit 4 is removed from the suction unit 116, and the dust bag with dust accumulated in the dust collecting unit 4 is discarded by performing the same operation as the first embodiment. When the dust collecting unit 4 is removed from the suction unit 116, the removal can be performed with the inlet 45 facing upward, so that the dust in the dust collecting bag is unlikely to leak out from the inlet 45. Fig.25In the embodiment, the center axis 24 of the dust collecting section 4 is oriented in a substantially horizontal direction, but the dust collecting section 4 can be removed with the inlet 45 facing upward (including obliquely upward) or with the center axis 24 of the dust collecting section 4 tilted relative to the substantially horizontal direction. In addition, the dust collecting section 4 can be placed upright on the suction section 116. In this case, for example, the dust collecting section 4 can be placed on the suction section 116 with the cover 42 at the top, the inlet 45 at the rear, and the exhaust opening 61 at the bottom, and the holding section 115 can be formed in such a manner that the connecting port 124 is connected to the inlet 45, and the air intake port 125 is connected to the exhaust opening 61. In this case, Fig.25 The holding portion 115 shown in the figure is rotated 90 degrees so that the front opening 123 faces upward.

[0066] The preferred embodiment of the present invention also includes a combination of any one of the above-mentioned multiple embodiments. In addition to the above-mentioned embodiments, the present invention can also have various modifications. These modifications should not be understood as not belonging to the scope of the present invention. The present invention should include all modifications within the meaning and scope equivalent to the claims.

Claims

1. An electric vacuum cleaner, characterized in that: have: a suction unit that sucks air containing dust from a suction port; and The dust collecting section includes an inlet for taking in the air containing dust sucked from the suction port, and a sealing member installed around the inlet. The sealing member includes a cylindrical base portion mounted on the peripheral portion of the inlet, and a cylindrical rib provided on the cylindrical base portion and protruding toward the inner side of the dust collecting portion.

2. The electric vacuum cleaner according to claim 1, characterized in that The sealing member further includes a protruding piece that protrudes from a portion of an inner surface of the cylindrical base portion toward a central axis of the cylindrical base portion to a position beyond the central axis.

3. The electric vacuum cleaner according to claim 2, characterized in that: When air flows from the suction part into the dust collecting part, the protruding piece can be inclined toward the inner direction of the dust collecting part.

4. The electric vacuum cleaner according to claim 3, characterized in that: The dust collecting part has an exhaust port for exhausting air from the inside of the dust collecting part to the outside at a position away from the inlet. When air flows from the suction part into the dust collecting part, the protruding piece is inclined toward the discharge port toward the inside of the dust collecting part, and the front end of the protruding piece protrudes further toward the inside of the dust collecting part than the cylindrical rib.

5. The electric vacuum cleaner according to claim 4, characterized in that: The sealing member further has a restricting rib on the inner surface of the protruding piece facing the inner side of the dust collecting portion. The restriction rib contacts the cylindrical base portion or the cylindrical rib when the protruding piece is inclined, thereby restricting the inclination of the protruding piece.

6. The electric vacuum cleaner according to claim 5, characterized in that: The cylindrical rib has a length that reaches an air inlet of a mounting plate of the dust collecting bag provided in the dust collecting portion but does not protrude into the interior of the dust collecting bag, and the cylindrical rib is embedded in the air inlet.

7. The electric vacuum cleaner according to claim 6, characterized in that: The protruding piece also has: a connecting portion connected to a portion of the inner surface of the cylindrical base portion; a pair of proximal edges, which are proximal to the inner surface of the cylindrical base portion and are disposed on both sides of the connecting portion in a circumferential direction centered on the central axis; a front end disposed beyond the central axis; and a pair of separated edge portions, which are separated from the inner surface of the cylindrical base portion and are provided on both sides of the front end in the circumferential direction, A ventilation gap for allowing air to pass is provided between the front end and the inner surface of the cylindrical base portion, and between the pair of separation edge portions and the inner surface of the cylindrical base portion.

8. The electric vacuum cleaner according to any one of claims 1 to 7, characterized in that: The sealing member further comprises an annular lip disposed around the cylindrical rib, The annular lip contacts the mounting plate of the dust collecting bag disposed in the dust collecting portion.

9. The electric vacuum cleaner according to claim 8, characterized in that: The annular lip includes an inner lip portion located outside the periphery of the cylindrical rib and an outer lip portion located outside the periphery of the inner lip portion.

10. The electric vacuum cleaner according to claim 9, characterized in that: The sealing member further includes an annular rib between the cylindrical rib and the inner lip portion. When the dust collecting bag is disposed in the dust collecting portion, the inner lip portion in contact with the mounting plate abuts against the annular rib.

11. The electric vacuum cleaner according to claim 10, characterized in that The dust collecting part has: A locking portion that is engageably and disengageably engaged with the mounting plate in a manner that maintains the cylindrical rib in a state of being embedded in the air intake port; and a pressing mechanism that presses the mounting plate in a direction to remove the air intake port from the cylindrical rib, The mounting plate detached from the locking portion is pressed by the pressing mechanism, and the air intake port falls off from the cylindrical rib.

12. The electric vacuum cleaner according to claim 11, characterized in that The dust collecting part can be attached to and detached from the suction part. The dust collecting part further comprises a cylindrical surrounding wall and a cover body which is openably and closably arranged on one end side of the central axis direction of the surrounding wall. The locking portion has: A first locking portion, which can be engaged and disengaged to lock the closed cover body; A second locking portion, which can be engaged and disengaged with the mounting plate of the dust bag; A linkage mechanism that enables the first stopper and the second stopper to be linked; as well as an operating unit, which is operated to cause the linkage mechanism to operate, The linkage mechanism can link a first action with a second action, wherein the first action is to disengage the first stopper from the cover body, and the second action is to disengage the second stopper from the mounting plate. The pressing mechanism has: an abutment portion abutting against the mounting plate of the dust collecting bag disposed in the dust collecting portion; A biasing member biases the contact portion in a direction of removing the air intake port of the mounting plate from the cylindrical rib.

13. The electric vacuum cleaner according to any one of claims 1 to 4, characterized in that: The cylindrical rib has a length that reaches an air inlet of a mounting plate of the dust collecting bag provided in the dust collecting portion but does not protrude into the interior of the dust collecting bag, and the cylindrical rib is embedded in the air inlet.

14. The electric vacuum cleaner according to any one of claims 2 to 5, characterized in that: The protruding piece also has: a connecting portion connected to a portion of the inner surface of the cylindrical base portion; a pair of proximal edges, which are proximal to the inner surface of the cylindrical base portion and are disposed on both sides of the connecting portion in a circumferential direction centered on the central axis; a front end disposed beyond the central axis; and a pair of separated edge portions, which are separated from the inner surface of the cylindrical base portion and are provided on both sides of the front end in the circumferential direction, A ventilation gap for allowing air to pass is provided between the front end and the inner surface of the cylindrical base portion, and between the pair of separation edge portions and the inner surface of the cylindrical base portion.

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