JP2017158851A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner with improved airtightness of a second separation part.SOLUTION: In any of both end parts of a separation chamber part 108 facing seal members 95, 96, end parts of an introduction part 119 and a discharge hole 135 facing the end parts of the separation chamber part 108, and the seal members 95, 96, a wrap amount in the state that they are not mutually fixed by a screw is formed larger on the opposite side than on screw sides with respect to a central axis A of the separation chamber part 108. A fitting table 94 has: a fitting table body 131 fitted cylindrically; a receiving part 132; and a rib. The receiving part 132 protrudes in a flange shape from the other end side of the fitting table body 131 and is provided with the discharge hole 135. The rib joins the fitting table body 131 and the receiving part 132 and reinforces the receiving part 132.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a vacuum cleaner including a plurality of separation units that centrifuge dust from dust-containing air.

  2. Description of the Related Art Conventionally, as a dust collector used in, for example, an electric blower, a so-called cyclone separation type that centrifuges dust (cyclone separation) by rotating dust-containing air inside is known. In recent years, such cyclone separation type dust collectors have adopted a configuration in which the size of the separation portion is divided according to the size of the dust. Specifically, the cyclone separation type dust collector includes a first centrifugal separation unit that centrifuges coarse dust, and a second centrifugal separation unit that separates fine dust that has not been separated by the first centrifugal separation unit. ing. The second centrifuges are each configured in a small size in order to generate a greater centrifugal force than the first centrifuge and improve the separation efficiency. On the other hand, a plurality of second centrifuge units are provided in parallel so as not to disturb the airflow by the small second centrifuge unit.

  Each second centrifuge unit is located above the first centrifuge unit and the like. Further, these second centrifuge sections are arranged in a circular shape (along the same circumference) in consideration of the arrangement of other air path configurations. Further, when each second centrifugal separation part is formed of a synthetic resin part, it is located on the upper part of the cylindrical member having a truncated conical shape whose diameter is reduced downward for convenience of mold release. The swirling airflow generating member and the airtight holding member for holding the airtightness of the lower part of the cylindrical member are separated, and a seal is sandwiched between them to secure each member with screws, thereby maintaining airtightness. And in order to absorb the dispersion | variation in the dimension of these members, each member is dimensioned so that it may bite into a seal. For this reason, although the fixing force by this screw acts at a position near the screw, the fixing force by the screw is sufficient due to the reaction force from the seal by setting the size to bite into the seal at a position far from the screw. There is a concern that the swirling airflow generating member and the airtight holding member are deformed and a gap is formed between the cylindrical member and a separate measure is required.

JP2013-132562A

  The problem to be solved by the present invention is to provide a vacuum cleaner that improves the airtightness of the separating portion.

  The vacuum cleaner of the embodiment includes a main body case that houses an electric blower, and a dust collector provided in the main body case. The dust collector includes a plurality of separation units. The separation unit is arranged in a circular shape, and centrifuges the dust from the dust-containing air sucked by driving the electric blower. The separation part includes a first body part, a second body part, a third body part, a seal member, and a fixing part. A 1st main-body part is provided with the cylindrical separation chamber part which turns dust-containing air inside. The second body part is provided separately from the first body part and includes an introduction part that is located on one end side of the separation chamber part and introduces dust-containing air into the separation chamber part. The third body portion is provided separately from the first body portion and includes a discharge portion that is located on the other end side of the separation chamber portion and discharges the dust separated in the separation chamber portion. The seal member is sandwiched between the first main body portion and the second and third main body portions, respectively, and seals the gap between the separation chamber portion, the introduction portion, and the discharge portion. The fixing portion fixes the second main body portion and the third main body portion while sandwiching the first main body portion via the seal member. Any of both end portions of the separation chamber facing the seal member, the other end of the introduction portion facing one end of the separation chamber, the discharge portion facing the other end of the separation chamber, and the seal member In other words, the opposite side of the center of the separation chamber is larger than the side of the fixed part with respect to the central axis of the separation chamber. The third main body portion includes a cylindrical portion provided in a cylindrical shape, a receiving portion, and a reinforcing portion. The receiving part protrudes in a flange shape from the other end side of the cylindrical part, and a discharge part is provided. A reinforcement part connects between a cylindrical part and a receiving part, and reinforces a receiving part.

It is a longitudinal cross-sectional view of the position of the separation part of the dust collector of the vacuum cleaner of one Embodiment. It is a longitudinal cross-sectional view of the position of the fixing | fixed part and rib of a dust collector same as the above. It is a longitudinal cross-sectional view which shows a dust collector same as the above. It is a perspective view which shows the 3rd main-body part of a dust collector same as the above. It is a disassembled perspective view of a part of a dust collector same as the above. It is a perspective view which shows a vacuum cleaner same as the above.

  The configuration of one embodiment will be described below with reference to the drawings.

  In FIG. 6, reference numeral 11 denotes a so-called canister-type vacuum cleaner. The vacuum cleaner 11 includes a pipe portion 12 that is an air passage forming body, and a vacuum cleaner body 13 to which the pipe portion 12 is detachably connected. have.

  The pipe part 12 is provided on the distal end side of the hose body 16, the connecting pipe part 15 connected to the cleaner body 13, the flexible hose body 16 communicating with the distal end side of the connecting pipe part 15. The hand operating section 17, the extension pipe 18 detachably connected to the distal end side of the hand operating section 17, and the floor brush 19 as a suction port body detachably connected to the distal end side of the extension pipe 18 and the like And.

  For example, a loop-shaped gripping portion 21 protrudes toward the hose body 16 on the hand operating portion 17, and a plurality of setting buttons 22 for operation setting are provided on the gripping portion 21.

  The vacuum cleaner body 13 includes a main body case 26 having large-diameter traveling wheels 23 on both sides and a swiveling wheel (not shown) at the lower portion. A certain dust collector 27 is detachable. The cleaner body 13 is configured to be able to travel (move) at least along the front-rear direction on the floor surface as a surface to be cleaned by the traveling wheels 23 and the turning wheels. Hereinafter, the front-rear direction and the left-right direction are based on the traveling (moving) direction of the cleaner body 13 (main body case 26).

  The main body case 26 is made of, for example, a synthetic resin, and supports a main body 31 located behind the dust collector 27 and a lower part of the front of the main body 31 to support the lower portion of the dust collector 27. And a protrusion receiving portion 32 as a dust collector supporting portion. Inside the main body case 26, a main body air passage portion (not shown) bent in an L shape in a side view is disposed across the main body portion 31 and the protruding receiving portion 32.

  The traveling wheels 23 are rotatably supported on both sides of the main body 31. Further, on the upper side of the front portion of the main body 31, for example, a loop-shaped handle 34 for gripping the cleaner main body 13 (main body case 26) protrudes in an inclined manner toward the rear. In addition, inside the main body 31, an electric blower 35, a control circuit unit (not shown) that controls the operation of the electric blower 35, a cord reel device that can supply power to the electric blower 35, etc., or a battery A power supply unit is housed.

  Further, the front portion of the main body 31 is connected to the suction side of the electric blower 35 and is connected to the downstream side of the dust collector 27 attached to the main body case 26 and is connected to the downstream side of the dust collector 27, and a dust collector (not shown) A communication opening (not shown) that is hermetically connected to the upstream side of 27 is formed so as to be positioned vertically. A plurality of exhaust holes (not shown) for discharging the exhaust from the electric blower 35 to the outside of the main body case 26 are formed at the rear of the main body 31.

  A main body suction port 40 to which the connection pipe portion 15 of the pipe portion 12 is connected is formed on the front surface of the protrusion receiving portion 32, and the main body suction port 40 is an opening at the upstream end of the main body air passage portion. . Therefore, the main body suction port 40 communicates with the communication opening portion via the main body air passage portion, and can communicate with the upstream side of the dust collector 27 via the communication opening portion.

  The operation of the electric blower 35 is controlled by the control circuit unit according to the operation of the setting button 22.

  On the other hand, the dust collector 27 shown in FIG. 3 includes an inlet 42 through which dust-containing air is introduced, and a first separation unit (first centrifuge unit) 43 communicating with the inlet 42 in an air path, An air guide portion 44 that guides the air that has passed through the first separation portion 43, a second separation portion (second centrifugal separation portion) 45 that is a plurality of separation portions that communicate with the air guide portion 44, and the second separation portion. An air passage portion 46 that guides air that has passed through the portion 45, and a discharge port 47 that constitutes a downstream end of the air passage portion 46 and discharges air. The dust collecting device 27 separates coarse dust, which is relatively large dust, and a part of fine dust, which is relatively small dust, from the dust-containing air introduced from the introduction port 42 by the first separation unit 43, The dust-containing air that has passed through the first separation portion 43 is guided to the second separation portions 45 by the air guide portions 44 in a substantially uniform manner, and the remaining fine dust is separated by the second separation portions 45, and the dust is separated. The separated air is discharged from the air passage portion 46 to the outside (the suction side of the electric blower 35 (FIG. 6)) through the discharge port 47.

  Further, the dust collector 27 is structurally provided with a bottomed cylindrical cup portion 51 as a first dust collector main body and a separation main body portion 52 as a second dust collector main body in a detachable manner. . Then, as shown in FIG. 6, the dust collector 27 is fitted and fixed to the front portion of the main body portion 31 at the rear side in a state of being attached to the main body case 26. In the following, in the dust collector 27, the vertical direction means one end side and the other end side in the axial direction of the dust collector 27 (the upper side being the one end side of the alternate long and short dash line L in FIG. Side). That is, the vertical direction in the dust collector 27 is based on the vertical direction in the state of the dust collector 27 alone, and the vertical direction of the dust collector 27 in the state of being attached to the main body case 26 is not necessarily the same. It may not match.

  The cup portion 51 shown in FIG. 3 integrally includes a bottomed cylindrical cup body portion 54 and a partition portion 55 that is continuous with an upper end portion that is one end portion of the cup body portion 54.

  The cup body portion 54 is formed of a member such as a transparent (transparent) synthetic resin, for example, and the first dust collecting portion 57 as a reservoir section partitioned inside can be visually observed from the outside. Yes. Further, at the rear part of the cup main body portion 54, a rectangular tube-shaped introduction port partitioning portion 58 that partitions the introduction port 42 is projected. Further, a dust collector handle portion 59 (FIG. 6) for gripping the dust collector 27 (cup portion 51) protrudes from the cup body portion 54.

  The first dust collection unit 57 mainly collects the coarse dust separated by the first separation unit 43 and collects a part of the fine dust entangled with the coarse dust. The first dust collecting portion 57 is located on the lower side in the cup portion 51.

  As shown in FIG. 6, the introduction port partition 58 is a portion that is in pressure contact with the intake opening of the main body case 26 in a state where the dust collector 27 is attached to the main body case 26.

  The partition part 55 shown in FIG. 3 is expanded in diameter with respect to the cup body part 54. Further, the partition part 55 partitions a dust disposal port 61 for discarding the dust in the cup part 51 on the inner periphery on the upper end side. And this partition part 55 isolate | separates the 2nd dust collection part 62 which accumulate | stores the fine dust isolate | separated by each 2nd separation part 45, when the isolation | separation main-body part 52 side attached to the cup part 51 is press-contacted inside. Partitioning with the main body 52 is possible. That is, the second dust collecting unit 62 is positioned around the upper side of the first separating unit 43 and outside the air flow path that passes through the dust collecting device 27. The second dust collecting part 62 communicates with the first dust collecting part 57 by removing the separation main body part 52 from the cup part 51, and drops the fine dust accumulated inside to the first dust collecting part 57. It is like that.

  On the other hand, the separation main body 52 is generally inserted into the cup 51 and inserted between the cup 51 and the first separation 43, and is positioned above the insertion 64. A main body 65 having a wind portion 44, a second separation portion 45 and an air passage portion 46 therein; and a wall portion 66 projecting downward from a lower end portion of the main body 65 at a position around the insertion portion 64 ing. A dust collector clamp 67 as a locking device for locking the dust collector 27 to the main body case 26 is provided over the upper portion and the rear portion of the main body 65.

  The insertion part 64 is an inner cylinder part 71 as a substantially cylindrical cylindrical part, and a synthetic resin that is a compression part that is coaxially arranged on the lower end side of the inner cylinder part 71 and can be attached to and detached from the inner cylinder part 71. And a shade portion 72 made of metal. And this 1st separation part 43 is arranged coaxially with this cup part 51 in the central part in cup main part 54 of cup part 51 in the state where separation main part 52 was attached to cup part 51, and it is the up-and-down direction. Has an axial direction along.

  The inner cylinder portion 71 includes a plurality of openings 73 communicating with the air guide portion 44 in the circumferential direction, and the entire opening 73 is covered with, for example, a mesh-like separation filter 74. Further, the outer surface (outer peripheral surface) 71a of the inner cylindrical portion 71 is between the inner surface (inner peripheral surface) 51a of the cup portion 51 (cup main body portion 54) with the separation main body portion 52 attached to the cup portion 51. The air passage 76 for turning the dust-containing air is defined.

  The air passage 76 is located on the upper side in the cup portion 51. That is, the air passage 76 is located above the first dust collecting portion 57.

  The shade part 72 divides the inside of the cup part 51 (cup body part 54) into an upper air passage 76 and a lower first dust collecting part 57 and is driven by the electric blower 35 (FIG. 6). The generated negative pressure is used to compress the dust. The shade portion 72 is formed in a covered cylindrical shape that opens downward. Therefore, the shade portion 72 has a larger diameter than the inner cylinder portion 71, and protrudes (enlarges (expands)) in the radial direction with respect to the inner cylinder portion 71 in a state of being attached to the inner cylinder portion 71. In addition, the diameter is smaller than that of the cup part 51 (cup body part 54). The shade portion 72 is spaced upward from the bottom portion of the cup portion 51. Further, the shade portion 72 includes a plurality of ventilation openings 78 penetrating in the vertical direction at positions outside the inner cylinder portion 71, and the whole ventilation openings 78 are covered with, for example, a mesh-like filter body 79. Yes.

  The main body 65 is a portion that is placed on the upper portion of the cup portion 51 and exposed to the upper portion of the cup portion 51.

  The wall portion 66 is inclined outward and downward. Further, a seal body 81 is attached to the distal end portion of the wall portion 66. The seal 81 is pressed against the partition 55 with the separation body 52 attached to the cup 51 to partition the second dust collecting section 62 in a circumferential shape (arc shape).

  The dust collector clamp 67 is operated by operating the operation handle portion 83 for operation located above the separation main body portion 52 (dust collection device 27) and the operation handle portion 83 located above the rear portion of the separation main body portion 52. And a locking claw portion 84 as an operating locking portion. The dust collector clamp 67 is located at the upper end of the dust collector 27 (separation main body 52).

  When the dust collecting device 27 is attached to the main body case 26 as shown in FIG. 6, the locking claw portion 84 is opened above the intake opening at the front portion of the main body portion 31 of the main body case 26. The dust collecting device 27 is locked to the main body case 26 by being inserted into and engaged with a locking opening (not shown) as a receiving portion. The latching claw portion 84 shown in FIG. 3 is urged in the direction of advancing backward, and is configured to retreat forward against the urging by lifting the operation handle portion 83. ing.

  Next, a more detailed member configuration of the separation main body 52 will be described.

  For example, as shown in FIG. 5, the separation main body 52 includes a substantially cylindrical separation cylinder member 88, a substantially cylindrical compression cylinder member 89, a filter body 79, a wall portion constituting member 90, a seal body 81, and a first main body section. Main body member 92, cover member 93 as the second main body portion, mounting base 94 as the third main body portion, seal members 95, 96, seal 97, partition member 98, and lid 99. Yes. Further, the separation main body 52 includes a separation cylinder member 88 and a compression cylinder member 89 sandwiched by a filter body 79 and fixed by a screw 101, and the separation cylinder member 88 and a wall portion constituting member 90 are fixed by a screw 102. The main body member 92, the cover member 93, and the mounting base 94 are fastened together with the member 92, and the screw 103 (FIG. 2) as a fixing portion sandwiching the (first) seal member 95 and the (second) seal member 96. The cover member 93 and the lid 99 are fixed by screws 104. In this separation main body 52, the separation cylinder member 88 constitutes the inner cylinder part 71, and the lower end part of the separation cylinder member 88 and the compression cylinder member 89 are overlapped with the filter body 79 sandwiched in the vertical direction. 72, the wall component member 90 and the seal body 81 constitute the wall portion 66, and the main body member 92, the cover member 93, the mounting base 94, the seal members 95 and 96, the partition member 98 and the lid body 99 are vertically moved. The main body 65 is configured by being stacked in the direction.

  The main body member 92 is integrally formed in a cylindrical shape with synthetic resin, for example, and is supported from below by a mounting base 94. The main body member 92 includes a cylindrical insertion portion 106 serving as a first main body, a plate-like holding portion 107 extending outward from the upper end portion of the insertion portion 106 in a flange shape, and the holding portion 107. A separation chamber part 108 provided in the outer part 109, an outer part 109 that is a cylindrical part connected to the insertion part 106 via the holding part 107, and a protruding part 110 (FIG. 2) protruding from the outer part 109, And a through hole 111 (FIG. 2) provided in the holding unit 107.

  In the insertion part 106, the upper end side of the mounting base 94 is inserted from below.

  The holding portion 107 is provided in a planar shape along a direction intersecting (orthogonal) with the axial direction of the separation main body 52 (main main body member 92).

  The separation chamber portion 108 shown in FIG. 3 constitutes the body portion of the second separation portion 45, and makes the dust-containing air guided by the air guide portion 44 through the first separation portion 43 swirl inside. . That is, the separation chamber portion 108 is a second separation portion main body. This separation chamber part 108 is also called a cone part, has an axial direction along the vertical direction, and has a cylindrical shape that gradually decreases in diameter from an upper end part that is one end part to a lower end part that is the other end part. (Conical). In addition, the separation chamber portion 108 is provided so as to penetrate the holding portion 107 in the up-down direction, and is spaced apart from the insertion portion 106. The separation chamber portion 108 extends downward with respect to the holding portion 107, and the holding portion 107 is configured to be positioned slightly below the upper end portion of the separation chamber portion 108. Further, a plurality of separation chambers 108 are set and on a plane intersecting (orthogonal) with the central axis centered on the central axis of the separation main body 52 (substantially coincident with the one-dot chain line L that becomes the central axis of the dust collector 27). The central axis A (FIG. 1) is positioned on, for example, a C-shaped imaginary arc located at the center. Therefore, the second separation portion 45 is arranged in an arc shape at a position excluding the rear central region in the left-right direction. Further, as shown in FIG. 1, a pressure contact portion 113 that is in pressure contact with the upper end portion of the seal member 96 is provided on the outer peripheral surface of the separation chamber portion 108. The pressure contact portion 113 is provided in an annular shape that is continuous in the circumferential direction of the separation chamber portion 108. Further, the pressure contact portion 113 is disposed in the vicinity of the lower end portion of the separation chamber portion 108. Further, the press contact portion 113 is a flat press contact surface 113 a whose lower end facing the seal member 96 is press-contacted to the upper end of the seal member 96. The pressure contact surface 113a is located on the opposite side of the inner peripheral side (center axis side) of the main body member 92 on the screw 103 (FIG. 2) side with respect to the center axis A of the separation chamber 108. Is formed in advance so as to incline to the lower side which is the seal member 96 side. That is, in FIG. 1, the pressure contact surface 113a of the pressure contact portion 113 is gradually inclined downward from the right side portion to the left side portion (see the broken line in FIG. 1). Note that the inclination of the pressure contact surface 113a is about 0.3 mm at the maximum, but is exaggerated on FIG. 1 for the sake of clarity. That is, FIG. 1 shows the wrap amount in the molding dimension before the main body member 92, the cover member 93, and the mounting base 94 are fixed to each other by the screw 103, and in a state in which these are fixed to each other by the screw 103. The wrap amount is set to be approximately equal between the inner peripheral side and the outer peripheral side of the main body member 92.

  The outer portion 109 forms an outer peripheral surface of the separation main body portion 52 and covers the outer side of all the separation chamber portions 108 and is formed in a cylindrical shape substantially coaxial with the insertion portion 106. That is, all the separation chambers 108 are located inside the outer shell 109. In other words, the outer portion 109 surrounds the outside of all the separation chamber portions 108. In addition, a separation chamber portion 108 is disposed in the vicinity of the inner surface of the outer shell portion 109. Further, as shown in FIG. 5, a part of the mounting base 94 and a part of the lid 99 (the locking claw part 84) are fitted to the outer part 109 at the position of the rear part corresponding to the discharge port 47. The opening 115 is cut out.

  The protruding portion 110 shown in FIG. 2 protrudes from the inner surface of the outer portion 109 along the radial direction. The projecting portion 110 is positioned near the lower end portion of the outer shell portion 109, and the distal end side is engaged with the mounting base 94.

  The through-hole 111 is provided through the holding portion 107 along the vertical direction at a position inward (center axis side) from the separation chamber portion 108. A plurality of the through holes 111 are arranged, and are spaced apart from each other at substantially equal intervals in the circumferential direction of the main body member 92. These through holes 111 are arranged one by one for each of the two second separation portions 45 (two separation chamber portions 108). Further, each of the through holes 111 is located between the second separation portions 45 (separation chamber portions 108) adjacent to each other.

  The cover member 93 shown in FIG. 5 is integrally formed of, for example, synthetic resin, and extends in a flange shape from the upper end portion of the cover member main body 117 to the outside. A plate-shaped flange portion 118 to be taken out, an introduction portion 119 provided in the flange portion 118, a screw boss portion 120 as a fixed receiving portion provided in the flange portion 118, and an upper fixing provided in the flange portion 118 A screw insertion part 121 as a part, and a rib part 122 projecting from the upper part of the cover member main body 117 and the introduction part 119 are provided.

  As shown in FIG. 3, the cover member main body 117 has a lower end side inserted from above into the insertion portion 106 of the main main body member 92 and is airtightly connected to the upper end portion of the mounting base 94 so that the air guide portion 44 is formed inside. It constitutes the upper end.

  The flange portion 118 is provided in a planar shape along a direction intersecting (orthogonal) with the axial direction of the separation main body portion 52 (main main body member 92).

  The introduction portion 119 is formed in a spiral shape that passes through the flange portion 118 and has an axial direction along the vertical direction, and dust-containing air from the air guide portion 44 is transferred to the second separation portion 45 on the inner peripheral surface of the separation chamber portion 108. It is a part to introduce along. The introduction portion 119 is positioned so as to protrude upward with respect to the flange portion 118. In addition, a plurality of introduction portions 119 are set, and are configured to be in pressure contact with the upper portion of each separation chamber portion 108 via a seal member 95. Therefore, the same number of introduction portions 119 as the separation chamber portions 108 (second separation portions 45) are provided. As shown in FIG. 1, the lower end portion of the introduction portion 119 is a substantially cylindrical introduction portion pressure contact portion 124 that is in pressure contact with the upper portion of the seal member 95. A fitting portion 125 into which the upper end portion of the separation chamber portion 108 is fitted is cut out in a step shape on the circumferential side. The introduction part 119 is provided with a cylindrical exhaust part 126 coaxially.

  The introduction portion pressure contact portion 124 is a planar introduction portion pressure contact surface 124 a in which the lower end portion facing the seal member 95 is pressed against the upper end portion of the seal member 95. The introduction portion pressure contact surface 124a is located on the opposite side of the inner peripheral side (center axis side) of the main body member 92 on the screw 103 (FIG. 2) side with respect to the center axis A of the separation chamber portion 108. The outer peripheral side of the member 92 is inclined downward, which is the seal member 95 side. That is, in FIG. 1, the introduction portion pressure contact surface 124a of the introduction portion pressure contact portion 124 is formed in advance so as to be gradually inclined downward from the right side portion to the left side portion (see the broken line in FIG. 1). The inclination of the introduction portion pressure contact surface 124a is about 0.3 mm at the maximum, but is exaggerated on FIG. 1 for the sake of clarity. That is, FIG. 1 shows the wrap amount in the molding dimension before the main body member 92, the cover member 93, and the mounting base 94 are fixed to each other by the screw 103, and in a state in which these are fixed to each other by the screw 103. The wrap amount is set to be approximately equal between the inner peripheral side and the outer peripheral side of the main body member 92.

  The exhaust section 126 discharges the air introduced into the separation chamber section 108 to the air passage section 46 (FIG. 3). The exhaust part 126 is formed in an elongated cylindrical shape, and the upper end part extends upward from the introduction part 119. Further, the exhaust part 126 is arranged substantially coaxially with the central axis A of the separation chamber part 108. That is, the exhaust part 126 is located at the center of the introduction part 119.

  The screw boss portion 120 shown in FIG. 2 is a portion for screwing the screw 103. The screw boss 120 is formed in a substantially cylindrical shape having an axial direction along the vertical direction, and is located inward (near the central axis) with respect to the separation chamber 108. Further, the lower end portion of the screw boss portion 120 protrudes below the flange portion 118. Further, as shown in FIG. 5, a plurality of the screw boss portions 120 are arranged in the circumferential direction of the cover member 93 and are separated from each other at substantially equal intervals. These screw boss portions 120 are arranged one by one for each of the two second separation portions 45 (FIG. 3), and are positioned between the two second separation portions 45 (introduction portions 119). These screw boss portions 120 are configured such that their lower end portions are inserted into the through holes 111 and project downward from the holding portions 107 of the main body member 92.

  The screw insertion portion 121 shown in FIG. 5 is a portion that passes through the flange portion 118 and is formed in a cylindrical shape having an axial direction along the vertical direction and into which the screw 104 is inserted. The screw insertion portion 121 is located outward with respect to the separation chamber portion. Further, a plurality of screw insertion portions 121 are arranged in the circumferential direction of the cover member 93 and are separated from each other at substantially equal intervals. One screw insertion portion 121 is arranged for each of the two second separation portions 45 (FIG. 3) adjacent to each other, and is located between the second separation portions 45 (FIG. 3). Further, these screw insertion portions 121 are respectively arranged on virtual lines extending radially from the central axis toward each screw boss portion 120.

  The rib portion 122 is formed in a rib shape protruding along the vertical direction, and is a substantially annular shape that surrounds the position between the screw boss portion 120 and the screw insertion portion 121 at a position outside the exhaust portion 126. It has become. The rib portion 122 has a seal 97 attached to the upper end portion, and hermetically separates the air guide portion 44 and the air passage portion 46 shown in FIG.

  The mounting base 94 shown in FIG. 4 is integrally formed of, for example, synthetic resin, and the mounting base body 131 as a substantially cylindrical tubular portion as the third main body, and outward from the lower end portion of the mounting base body 131. And a plate-like receiving portion 132 extending in a flange shape, a duct portion 133, and a rib 134 as a reinforcing portion for reinforcing the receiving portion 132 by connecting the mounting base body 131 and the receiving portion 132. I have. The receiving portion 132 has a plurality of discharge holes 135 serving as discharge portions.

  As shown in FIG. 3, the mounting base body 131 is hermetically connected to the cover member 93 (the lower end portion of the cover member main body 117) at the upper end portion, and constitutes the lower end side of the air guide portion 44 inside. The mounting base body 131 is formed so as to gradually reduce the diameter from the lower end portion to the upper end portion. Therefore, the air guide portion 44 is configured so that the air passage area gradually decreases from the upstream side to the downstream side. Further, as shown in FIG. 2, the mounting base body 131 is integrally provided with a screw seat portion 136 as a fixing portion insertion portion into which the screw 103 is inserted from below. The screw seat portion 136 is provided on the outer surface (outer peripheral surface) of the mounting base body 131. The screw seat portion 136 is formed in a cylindrical shape having an axial direction along the vertical direction. Further, a plurality of screw seat portions 136 are arranged in the circumferential direction of the mounting base body 131 and are spaced apart from each other at substantially equal intervals. One screw seat portion 136 is disposed for each of the two second separation portions 45 (FIG. 3), and is located between the second separation portions 45 (FIG. 3). The upper end portions of the screw seat portions 136 are configured so that the lower end portions of the screw boss portions 120 of the cover member 93 inserted into the through holes 111 of the main body member 92 are in close contact with each other.

  The receiving portion 132 shown in FIGS. 3 and 5 is provided in a planar annular shape along a direction intersecting (orthogonal) with the axial direction of the mounting base 94 (separation main body portion 52). The receiving portion 132 is disposed so as to be in close contact with the lower end portion of the main body member 92 via a seal member 96.

  The duct portion 133 shown in FIGS. 3 and 4 constitutes the downstream side of the air passage portion 46 inside and the upstream side of the air guide portion 44 outside, and is positioned coaxially with the mounting base body 131. A cylindrical first duct 138 that communicates with a side portion of the first duct 138 and a rectangular tube shape that extends to the rear outside of the mounting base body 131 to the back (crossing) the first duct 138. A second duct 139 and a rectangular frame-shaped discharge port partitioning portion 140 that is positioned at the tip of the second duct 139 and partitions the discharge port 47 integrally on the receiving portion 132 are provided.

  The first duct 138 is positioned inward of the mounting base body 131 along the axial direction (center axis) of the mounting base 94. As shown in FIG. 4, the first duct 138 is connected to the inner peripheral surface of the mounting base body 131 by a plurality of connecting ribs 142 as connecting portions. These connecting ribs 142 are formed radially along the radial direction of the mounting base 94. As shown in FIG. 3, the upper end of the first duct 138 is airtightly connected to the lower end of the partition member 98 and constitutes the lower end of the air passage 46 inside. Therefore, at the position of the first duct 138, the air passage portion 46 has a so-called double tube structure with respect to the air guide portion 44.

  The second duct 139 is provided along the radial direction of the mounting base 94 and extends linearly from the rear portion of the first duct 138 toward the rear. As shown in FIG. 4, the second duct 139 is formed so that the rear end side is enlarged in the left-right direction (width direction). Accordingly, the downstream end side of the air passage portion 46 (FIG. 3) partitioned inside the second duct 139 is configured to expand toward the outlet 47 toward the downstream side.

  The discharge port section 140 is a portion that is in pressure contact with the communication opening of the main body case 26 in a state where the dust collector 27 is attached to the main body case 26 (FIG. 6). The discharge port partition 140 is fitted into the opening 115 of the main body member 92 shown in FIG. 5, and is exposed to the outside of the dust collector 27 (separation body 52) as shown in FIG. A seal packing may be attached to the rear surface of the discharge port partition 140.

  The rib 134 shown in FIG. 4 connects between the mounting base body 131 and the receiving part 132. The ribs 134 are formed radially along the radial direction of the mounting base 94 and are located between the separation chamber portions 108 (FIG. 1) adjacent to each other. Further, as shown in FIG. 2, each rib 134 is formed with a notch portion 144 into which the protruding portion 110 of the main body member 92 is inserted at an outer lower end portion facing the outer portion 109 of the rib 134. Further, in the present embodiment, the rib 134 is a first reinforcing portion that connects the outer peripheral surface of the mounting base body 131 and the upper portion of the receiving portion 132 between the adjacent separation chamber portions 108 as shown in FIG. A certain first rib 134a and a second rib 134b that is a second reinforcing portion for connecting the outer peripheral surface of the screw seat portion of the mounting base body 131 and the upper portion of the receiving portion 132 between the adjacent separation chamber portions 108 are set. Has been. The first ribs 134a and the second ribs 134b are configured to be alternately arranged in the circumferential direction of the mounting base 94 (mounting base body 131).

  The discharge hole 135 is formed in a round hole shape and penetrates the receiving portion 132 in the vertical direction. A plurality of discharge holes 135 are set. In addition, as shown in FIG. 1, these discharge holes 135 are configured such that the lower end portions of the separation chamber portions 108 are inserted therethrough, and are pressed into contact with the lower portions of the separation chamber portions 108 via seal members 96. Accordingly, the same number of discharge holes 135 as the separation chamber portions 108 (second separation portions 45) are provided.

  The seal members 95 and 96 are made of a soft and elastically deformable member such as rubber or elastomer. The seal member 95 is formed between a peripheral edge portion (on the holding portion 107) on the upper end side of the separation chamber portion 108 of the main body member 92 and an introduction portion pressure contact surface 124a of the introduction portion pressure contact portion 124 which is the lower end side of each introduction portion 119. The separation chamber portion 108 and the introduction portion 119 are hermetically connected to each other in each second separation portion 45 sandwiched therebetween. Therefore, the seal member 95 includes a plurality of annular (first) seal member main bodies 95a (FIG. 5) that are press-contacted to the upper end of the separation chamber portion 108 and the introduction portion press-contact surface 124a. (C-shaped) is provided continuously, and is formed flat, ie, thin. Further, the seal member 96 is sandwiched between a peripheral edge portion (pressure contact portion 113 (pressure contact surface 113a)) on the lower end side of the separation chamber portion 108 of the main body member 92 and the periphery of the discharge hole 135 of the mounting base 94. In each second separation portion 45, the separation chamber portion 108 and the air guide portion 44 (FIG. 3) are connected in an airtight manner. Therefore, the seal member 96 is an annular (second) seal member main body 96a that is in pressure contact with the pressure contact surface 113a of the pressure contact portion 113 on the lower end side of the separation chamber portion 108 and the peripheral edge portion of the discharge hole 135 of the receiving portion 132. Are formed in a flat shape, that is, a thin thickness.

  The seal member 95 is compressed between the main body member 92 (holding portion 107) and the cover member 93 (introducing portion 119 (introducing portion press contact portion 124 (introducing portion press contact surface 124a))), or the main member These main body members are kept airtight by biting into at least one of the body member 92 (holding portion 107) and the cover member 93 (introducing portion 119 (introducing portion pressure contact portion 124 (introducing portion pressure contact surface 124a))). 92 (holding part 107) and cover member 93 (introducing part 119 (introducing part press contact part 124 (introducing part press contact surface 124a))) are formed to a thickness that causes wrapping in the vertical direction, which is the tightening direction of screw 103. Has been. Similarly, the seal member 96 is compressed between the main body member 92 (pressure contact portion 113 (pressure contact surface 113a)) and the mounting base 94, or the main body member 92 (pressure contact portion 113 (pressure contact surface 113a)). The main body member 92 (pressure contact portion 113 (pressure contact surface 113a)) and the mounting base 94 are vertically tightened in the direction in which the screw 103 is tightened so that at least one of the mounting base 94 and the mounting base 94 is kept airtight. It is formed to a thickness that causes wrapping in the direction.

  The seal 97 shown in FIG. 5 closes the gap between the upper end of the exhaust part 126 and the partition member 98, and is composed of a soft and elastically deformable member such as rubber or elastomer. . The seal 97 is integrally provided with a substantially annular seal frame portion 97a fitted on the upper portion of the rib portion 122, and a seal main body portion 97b provided inside the seal frame portion 97a. The seal body 97b is formed in an annular shape. A plurality of seal body portions 97b are set, and each exhaust portion 126 is configured to be inserted from below. Therefore, the same number of seal main body portions 97b as the separation chamber portions 108 (second separation portions 45 (FIG. 3)) are provided.

  The partition member 98 shown in FIG. 3 is integrally formed of, for example, a synthetic resin, and has a cylindrical partition main body 147 and a plate-like extension that extends outwardly from the upper end of the partition main body 147 in a flange shape. And an exit 148. In addition, a plurality of communication ports 149 communicating with the exhaust side of each second separation portion 45 are opened in the extension portion 148.

  The partition body 147 has a lower end inserted into the cover member body 117 of the cover member 93 from above, and is airtightly connected to the upper end of the duct portion 133 (first duct 138) of the mounting base 94 so as to have an air passage inside. The upper end portion of the portion 46 is configured, and the upper end side of the air guide portion 44 is configured outside.

  The extending part 148 is provided in a planar annular shape along a direction intersecting (orthogonal) with the axial direction of the partition member 98 (separation main body part 52). The extending portion 148 overlaps the cover member 93 on the exhaust portion 126 via the seal 97, and constitutes the upper end portion of the air guide portion 44 at the lower portion. That is, the air guide portion 44 includes the inner peripheral surface of the mounting base body 131 of the mounting base 94, the inner peripheral surface of the cover member main body 117 of the cover member 93, and the outer surface of the duct portion 133 (first duct 138) of the mounting base 94. The partition member 98 is partitioned by the outer peripheral surface of the partition portion main body 147 and the lower surface of the extending portion 148. For this reason, the air guide portion 44 is located from the inside to the top of the second separation portion 45.

  The communication port 149 is formed in a round hole shape and penetrates the extending portion 148 in the vertical direction. The communication port 149 is a portion where the upper end portion of the exhaust portion 126 is inserted and connected from below. A plurality of communication ports 149 are set and are configured to be airtightly connected to the respective exhaust parts 126 via the seal main body part 97b (FIG. 5) of the seal 97. Therefore, the same number of communication ports 149 as the separation chamber portions 108 (second separation portions 45) are provided.

  The lid 99 is overlaid on the upper part of the partition member 98 and constitutes the upper end of the dust collector 27. The lid 99 is provided with a dust collector clamp 67 and a screwing portion (not shown) to which a screw 104 (FIG. 5) is screwed. Therefore, the operation handle portion 83 and the locking claw portion 84 are arranged on the lid body 99, respectively.

  Next, the operation of the above embodiment will be described with reference to FIGS.

  When assembling the dust collector 27, the separation main body 52 separately assembled with respect to the upper part of the cup part 51 (dust disposal port 61), and the insertion part 64 and the wall part 66 are inserted into the cup part 51. Attach to.

  When the separation main body 52 is assembled, the main body member 92 is stacked on the mounting base 94 via the seal member 96, and the seal 97 and the partition are separated from the main body member 92 via the seal member 95. A cover member 93 that is integrally fixed to the member 98 and the lid 99 with a screw 104 is overlapped, and the cover member 93 and the mounting base 94 are sandwiched between the main body member 92 by the screw 103, and the seal members 95 and 96 are attached. The main body 65 is configured by being pinched. Thereafter, the separation cylinder member 88 and the compression cylinder member 89 sandwiched by the filter body 79 and fixed to each other by the screw 101 are connected to the lower end of the main body member 92 of the main body 65 by the screw 102 together with the wall constituting member 90 to which the seal body 81 is attached. The separation main body part 52 is completed by fixing to the part.

  Specifically, each exhaust part 126 of the cover member 93 is inserted into each seal main body part 97b of the seal 97 from below, and the seal frame part 97a is fitted to the rib part 122 of the cover member 93, while the partition member 98 After inserting into each communication port 149 from below, the lid 99 is overlaid on the partition member 98, and each screw insertion portion 121 of the cover member 93 and each screw fixing portion of the lid 99 are aligned, and then the screw from below. The cover member 93 is fixed integrally with the lid body 99 with the seal 97 sandwiched vertically between the partition member 98 by inserting the screw 104 into the screw insertion portion 121 and the screw fixing portion, respectively. To do.

  Further, the lower end portion of each separation chamber portion 108 of the main body member 92 is inserted into the seal member main body 96a of the seal member 96 from above, and the upper portion of the seal member 96 is brought into contact with the press contact surface 113a of the press contact portion 113. The lower end portion of the separation chamber portion 108 is inserted into each discharge hole 135 of the mounting base 94 from above. Further, the upper end portion of each separation chamber portion 108 of the main body member 92 is inserted into the seal member main body 95a of the seal member 95 from below to hold the seal member 95 on the upper surface of the holding portion 107, while the seal 97, the partition member Cover member 93 fixed integrally with 98 and lid 99 is applied to main body member 92 from above, and each introduction portion 119 is fitted to the upper end portion of each separation chamber portion 108 so that each separation chamber portion 108 is fitted. Are fitted into the fitting portions 125 at the lower end portions of the introduction portions 119, and the introduction portion pressure contact surface 124 a of the introduction portion pressure contact portion 124 is brought into contact with the upper portion of the seal member 95. Further, the front end side of the protruding portion 110 of the main body member 92 is fitted into the notch portion 144 provided in each rib 134 of the mounting base 94.

  In this state, the screw boss part 120 of the cover member 93 inserted through the through hole 111 of the main body member 92 and the screw seat part 136 of the mounting base 94 are aligned with each other and are in close contact with each other, and the screw 103 from below. Are inserted into the screw seat portion 136 and the screw boss portion 120 and screwed to the screw boss portion 120, respectively, so that the main body member 92, the cover member 93, and the mounting base 94 are fastened together and fixed to each other. Thus, a main body 65 having an air guide portion 44, each second separation portion 45, an air passage portion 46, and a discharge port 47 is configured.

  Here, in order to secure the airtightness of the second separation part 45 in particular, the main body member 92, the cover member 93 and the mounting base 94 are preferably fixed with as many screws 103 as possible, but the dust collector 27 Since the increase in the size of the (vacuum cleaner 11) and the increase in the fastening structure of the screw 103 and the screw 103 leads to an increase in mass, cost of parts, manufacturing cost, and the like, the number of uses is limited. The seal member 95, so as to absorb the variation in dimensions of the main body member 92 (separation chamber portion 108), the cover member 93 (introduction portion 119), and the mounting base 94 (position of the discharge hole 135 of the receiving portion 132). 96 is a vertical direction which is a tightening direction of the screw 103 with respect to the main body member 92 (separation chamber portion 108), the cover member 93 (introduction portion 119) and the mounting base 94 (position of the discharge hole 135 of the receiving portion 132). As the screw 103 is tightened, the side closer to the screw 103, that is, the side closer to the screw 103 with respect to the central axis A of the separation chamber portion 108, as the screw 103 is tightened. The reaction force is generated from the seal members 95 and 96 on the inner side, and on the outer side opposite to the screw 103 with respect to the central axis A of the separation chamber portion 108, the respective introduction portions 119 of the cover member 93 are in the upward direction (separation). The direction away from the chamber 108 and the seal member 95), the position of the discharge hole 135 of the receiving portion 132 of the mounting base 94. Then, deformation may occur in the downward direction (in the direction away from the separation chamber portion 108 and the seal member 96), and there is a possibility that insufficient pressure contact with the seal members 95 and 96 may occur.

  Therefore, according to the embodiment described above, the introduction portion pressure contact surface 124a of the introduction portion pressure contact portion 124 located at the lower end portion of the introduction portion 119 facing the seal member 95 and the separation chamber portion 108 facing the seal member 96. The pressure contact surface 113a of the pressure contact portion 113 located at the lower end of the seal member extends from the inner side which is the screw 103 side to the outer side which is the opposite side to the seal member 95, 96 side with respect to the central axis A of the separation chamber 108 In this way, the wrap amount when not fixed by the screw 103 is formed in advance so that the opposite side of the center axis A of the separation chamber portion 108 is larger than the screw 103 side. As a result, even if the above deformation occurs at the position of each introduction portion 119 of the cover member 93 and the discharge hole 135 of the receiving portion 132 of the mounting base 94, the screw with respect to the central axis A of the separation chamber portion 108 In the state where the main body member 92, the cover member 93, and the mounting base 94 are fixed to each other by absorbing the deviation of the contact amount between the 103 side and the opposite side and tightening the screw 103, the screw 103 side and the opposite side It becomes possible to make the amount of laps at and approximately equal. Moreover, in the mounting base 94, since the receiving portion 132 is a flat plate shape, the rigidity is low, and deformation at the position of the discharge hole 135 is more likely to occur than the introduction portion 119 having relatively large irregularities. Is connected to the outer peripheral surface of the cylindrical mounting base body 131 by the radial ribs 134, so that strength can be secured and deformation can be suppressed. Therefore, the airtightness of the second separation part 45 can be improved.

  Further, by engaging the projecting portion 110 protruding inside the outer portion 109 with the notch portion 144 provided on the rib 134, the fastening force of the screw 103 is applied to the outer portion 109 side, that is, the separation chamber via the rib 134. It is possible to act on the outer side opposite to the screw 103 with respect to the central axis A of the portion 108, and the structure for fastening the main body member 92 and the mounting base 94 to the side opposite to the screw 103 (second separation) Since the portion 45 (the outer peripheral side of the separation chamber portion 108) can be configured, deformation at the position of the discharge hole 135 of the receiving portion 132 is less likely to occur, and the airtightness can be further improved.

  Then, the assembled dust collector 27 is attached to the main body case 26, the power cord is pulled out from the cord outlet and connected to an outlet such as a wall surface, and then the hand operating section 17 of the pipe section 12 connected to the main body inlet 40 is installed. By operating the desired setting button 22 while gripping the grip portion 21, the electric blower 35 is operated in the operation mode set by the control circuit portion to generate negative pressure, and the floor brush 19, the extension pipe 18, or Dust is sucked in together with air from the front end side of the hand operating section 17. The dust-containing air, that is, the dust-containing air is guided from the pipe portion 12 through the main body suction port 40, the main body air passage portion and the communication opening portion to the introduction port 42, and from the introduction port 42, the dust collecting device 27 The coarse dust is mainly centrifuged by being sucked into the cup body 54 of the cup portion 51 and swirling through the air passage 76, and falls along the inner surface 51a of the cup portion 51 to the first dust collecting portion 57. Can be stored. The coarse dust is carried from the air passage 76 to the shade portion 72 by a part of the flow of the dust-containing air, and the dust-containing air passes along the ventilation openings 78 of the shade portion 72 so that the filter body. The shade portion 72 is compressed by 79.

  The dust-containing air from which the coarse dust has been separated is filtered by the separation filter 74 when passing through the opening 73 of the inner cylinder portion 71. Further, the dust-containing air that has passed through the separation filter 74 flows into the second separation sections 45 (each separation chamber section 108) from the respective introduction sections 119 via the air guide sections 44 and flows into the respective second separation sections 45. The dust-containing air is swirled along the inner peripheral surface of the separation chamber 108, the fine dust is centrifuged, falls from the separation chamber 108 onto the wall 66 through the discharge hole 135, and this wall By the inclination of the portion 66, it is guided to the second dust collecting portion 62 and stored. Then, the substantially dust-free air from which fine dust has been centrifuged is exhausted from the exhaust part 126 of each second separation part 45 to the air path part 46 and merged. After being exhausted from the discharge port 47 to the outside of the dust collector 27 and passing through the intake opening, it is sucked into the electric blower 35 and passes through while cooling the inside of the electric blower 35 to become exhaust air. The air is exhausted from the body case 26 through the exhaust hole 35.

  When the cleaning is completed, the user operates the predetermined setting button 22 so that the control circuit unit decreases the input of the electric blower 35 and stops the electric blower 35.

  As a result, it is possible to provide the vacuum cleaner 11 including the high-efficiency second separation unit 45 that is small, lightweight, inexpensive, and airtight.

  When discarding the dust accumulated in the dust collector 27, the operation handle 83 of the dust collector clamp 67 is lifted to retract the locking claw 84 from the locking opening, and the dust collector 27 is removed. After removing from the main body case 26, the separation main body 52 is removed from the cup portion 51, whereby the fine dust accumulated in the second dust collecting portion 62 is separated from the partition portion 55 and the cup main body portion 54 is collected. And moves down to the first dust collecting part 57 in the interior of the slab. Therefore, the user can simultaneously collect and discard coarse dust accumulated in a compressed state in the cup portion 51 and fine dust mixed with the coarse dust from the dust disposal port 61.

  In the above-described embodiment, the first separation unit 43 is not limited to a configuration that separates dust from a cyclone, and may be a filter, for example.

  Further, a lower end portion (introducing portion press-contact portion 124 (introducing portion) of the introducing portion 119 facing the seal member 95 so that the wrap amount on the opposite side of the central axis A of the separation chamber portion 108 is larger than the screw 103 side. Although the pressure contact surface 124a)) is inclined, the upper end portion of the separation chamber 108 facing the seal member 95 may be inclined, or the thickness of the seal member 95 itself may be inclined, At least one of them may be combined. Similarly, the lower end (pressure contact portion 113 (pressure contact surface) of the separation chamber portion 108 facing the seal member 96 so that the wrap amount on the opposite side of the center axis A of the separation chamber portion 108 is larger than the screw 103 side. 113a)) is inclined, but the position of the discharge hole 135 of the receiving portion 132 facing the seal member 96 may be inclined, or the thickness of the body of the seal member 96 may be inclined. , At least one of them may be combined.

  The vacuum cleaner 11 is not limited to the canister type, and is an upright type vacuum cleaner in which the floor brush 19 is connected to the lower portion of the vertical vacuum cleaner body 13 in the vertical direction, and an extension pipe for the vacuum cleaner body 13. A stick type vacuum cleaner that connects the floor brush 19 via 18 or an autonomous traveling type vacuum cleaner (robot cleaner) that cleans the floor surface while traveling autonomously can also be applied.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

11 Vacuum cleaner
26 Main unit case
27 Dust collector
35 Electric blower
45 Second separation part as separation part
92 Main body member as first body part
93 Cover member as second body part
94 Mounting base as third body
95, 96 Seal member
103 Screw as fixing part
108 Separation chamber
109 Outer part
110 Protrusion
119 Introduction
131 Mounting base as a cylindrical part
132 Receiver
134 Ribs as reinforcement
135 Discharge hole as discharge section
144 Notch A Center axis

Claims (3)

A body case containing an electric blower;
A dust collector provided in the main body case;
The dust collector is arranged in a circular shape, and includes a plurality of separation units that centrifuge dust from dust-containing air sucked by driving of the electric blower,
The separation unit is
A first main body provided with a cylindrical separation chamber for swirling dust-containing air inside;
A second main body portion that is separate from the first main body portion and includes an introduction portion that is located on one end side of the separation chamber portion and introduces dust-containing air into the separation chamber portion;
A third main body portion that is separate from the first main body portion and includes a discharge portion that is located on the other end side of the separation chamber portion and discharges the dust separated in the separation chamber portion;
A seal member that is sandwiched between the first main body part and the second and third main body parts, and seals a gap between the separation chamber part, the introduction part, and the discharge part;
A fixing portion for fixing the second main body portion and the third main body portion in a state where the first main body portion is sandwiched via the seal member;
Both ends of the separation chamber facing the sealing member, the other end of the introduction portion facing one end of the separation chamber, the discharge portion facing the other end of the separation chamber, Either of the sealing members is formed in advance on the opposite side of the fixed portion side with respect to the central axis of the separation chamber portion in a state where the wrap amount is not fixed to each other at the fixed portion,
The third body part is
A cylindrical portion provided in a cylindrical shape;
Projecting in a flange shape from the other end side of the cylindrical part, and a receiving part provided with the discharge part,
An electric vacuum cleaner comprising: a reinforcing portion that connects the cylindrical portion and the receiving portion to reinforce the receiving portion. Both ends of the separation chamber facing the seal member, the other end of the introduction facing the one end of the separation chamber, the discharge facing the other end of the separation chamber, and the seal member One of the above is characterized in that the amount of lap between the fixed portion side and the opposite side is substantially equal to the central axis of the separation chamber portion in a state where the fixed portions are fixed to each other. The electric vacuum cleaner according to 1. The first body part
An outer part covering the outside of the separation chamber,
A projecting portion projecting inward from the outer shell portion between the separation chamber portions;
The vacuum cleaner according to claim 1 or 2, wherein each reinforcing portion includes a cutout portion into which the protruding portion is inserted along a radial direction.

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