JP2012016363A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the vibration transmission of an electric air blower while maintaining the airtightness between the suction and exhaust of the electric air blower.SOLUTION: The vacuum cleaner includes an elastic member 101 which is provided at the periphery of the suction opening 28a of the electric air blower 28, and which realizes independently the shape of vibration protrusions 101e for suppressing vibration, and the shape of a vibration isolation member airtight portion 101a for maintaining the airtightness of the suction side and the exhaust side of the electric air blower.

Description

  The present invention relates to an airtight structure and an anti-vibration structure of an electric blower of a vacuum cleaner.

  In the vacuum cleaner, a problem of vibration noise generated by the vibration of the electric blower propagating to the housing and the atmosphere is known. As countermeasures for reducing vibration noise, there are a method for suppressing generation from a vibration source and a method for reducing propagation of vibration of an electric blower. As the latter conventional technique, the technique described in Patent Document 1 shown below is known. ing.

  Patent Document 1 describes a vibration-proof structure having a vibration-proof rubber and seal attached around an intake hole and a rear vibration-proof rubber attached to an end portion on the motor side.

JP-A-2-279123

  On the other hand, clean exhaust is a high demand for vacuum cleaners. However, the conventional technique described in Patent Document 1 has the following problems.

  The anti-vibration rubber and seal that mainly supports the radial direction of the electric blower needs to reduce the radial rigidity in order to enhance the anti-vibration effect, but is easily deformed and cannot support the electric blower. Increasing the rigidity to support increases vibration noise.

  Furthermore, a vacuum cleaner that provides clean exhaust typically has a filter downstream of the electric blower. Since the filter is a flow path resistance, it raises the pressure of the case containing the electric blower. When this is achieved with the above-described conventional technology, the exhaust and intake air of the electric blower is partitioned by the vibration proof rubber / seal, so it is necessary to make the vibration proof rubber / seal flexible in order to increase the vibration proof effect. As a result, airtightness cannot be maintained, exhaust and intake air circulate, and the suction performance deteriorates. Conversely, if the airtightness is increased to resist the internal pressure of the case, the anti-vibration effect deteriorates and vibration increases.

  Then, the objective of this invention is providing the vacuum cleaner which is hard to transmit the vibration of an electric blower, maintaining the airtightness between the intake / exhaust of an electric blower.

  The present invention realizes that a vibration preventing part (for example, a vibration preventing projection) for suppressing vibration and an air tight part (for example, a vibration preventing member air tight part) for taking air tightness on the intake side and the exhaust side of the electric blower are realized in different shapes. Features.

  The present invention provides a first annular portion (for example, an anti-vibration protrusion) in which a plurality of protrusions are annularly disposed on a member (for example, an elastic member) disposed between the periphery of the suction opening of the electric blower and the case. And a second annular portion (for example, a vibration-proof member hermetic portion) that is formed of an annular thin plate and has a distal end that extends outward with respect to the root.

  According to the present invention, since the vibration preventing portion for suppressing vibration and the airtight portion for taking airtightness on the intake side and exhaust side of the electric blower are realized in different shapes, the shape effective for vibration and the shape effective for airtightness are separately provided. Therefore, both vibration isolation and airtightness can be achieved.

  According to the present invention, the member disposed between the periphery of the suction port of the electric blower and the case has a first annular portion in which a plurality of protrusions are annularly arranged, and an annular thin plate, and is based on the root. Since the second annular portion having the tip extended outward is provided, the shape effective for vibration and the shape effective for airtightness can be configured separately, and both vibration isolation and airtightness can be achieved.

  If the vibration of the electric blower is difficult to be transmitted to the case, the noise of the electric vacuum cleaner can be reduced, and if the airtightness between the intake and exhaust of the electric blower can be maintained, the suction work rate of the electric vacuum cleaner can be improved.

It is a cross-sectional view of the cleaner body of the present embodiment. (A) is a perspective view of the dust collector of a present Example, (B) is a cross-sectional view of the dust collector of a present Example. (A) is a perspective view of the inner cylinder and outer cylinder of a present Example, (B) is a perspective view of the back side of the inner cylinder of a present Example. (A) is a perspective view of the state which opened the front cover of the dust accommodating part of a present Example, (B) is a perspective view of the state which opened the rear filter of the dust accommodating part of a present Example. (A) is the front view which looked at the front lid of the dust container of this embodiment from the outside of the dust container, and (B) is the front cover of the dust container of this embodiment viewed from the inside of the dust container. FIG. It is the front view seen from the dust separation part side when the front cover of the dust accommodating part of a present Example is removed. It is a general-view figure of the vacuum cleaner of a present Example. It is a plane sectional view of the cleaner body which left the air intake duct and the cord reel of the present embodiment. It is a disassembled perspective view of the intake duct of this example, an exhaust duct, a case, a filter, and an electric blower. It is a perspective view when the intake duct of a present Example is seen from the electric blower side. It is the bottom view which looked at the air intake duct of the present Example from the elastic member side. It is a perspective view of the elastic member of a present Example. (A) is sectional drawing of the air intake duct, case, and airtight packing of a present Example, (B) is sectional drawing of the airtight packing of a present Example. (A) is sectional drawing of the intake duct of this example, a fixed cover, and an elastic member, (B) is sectional drawing of the elastic member of a present Example. It is the perspective view which looked at the fixed cover of a present Example from the intake duct side.

  In the present invention, since the vibration preventing portion for suppressing vibration and the shape for taking airtightness on the intake side and the exhaust side are provided in separate shapes instead of one member, the shape effective for vibration and the shape effective for airtightness are provided. It can be configured separately, and both vibration isolation and airtightness can be achieved. Moreover, since the vibration preventing part of the airtight member has a plurality of convex shapes, each convex shape is crushed uniformly, and vibration from the electric blower can be easily suppressed. Moreover, since the shape which maintains the airtightness of an airtight member is a thin plate shape, it is easy to follow the direction of intake / exhaust, and the intake / exhaust performance is unlikely to deteriorate. Moreover, the shape which keeps airtight of an airtight member becomes a thin-plate shape, and since a thin-plate-shaped front-end | tip extends and inclines outward about 30 degree | times, a front-end | tip can be integrated stably in the same direction. Furthermore, since the tip is always pressed against the airtight surface during assembly, the intake / exhaust performance is unlikely to deteriorate. By adopting this configuration in this way, it is possible to provide a vacuum cleaner that is easy to be airtight between intake and exhaust, does not deteriorate intake performance, and is low noise and easy to use.

  Less than. A first embodiment of the present invention will be described.

  In FIG. 1, the cross-sectional view of the cleaner body of a present Example is shown. FIG. 8 is a plan sectional view of the cleaner body of the embodiment of the present invention when the cleaner body 1 is cut with the dust collector 2 removed. It is preferable that the vacuum cleaner main body 1 is horizontally placed in the usage state of the vacuum cleaner, and the vacuum cleaner main body 1 is vertically placed in the housed state of the vacuum cleaner. When the vacuum cleaner is in use, if the main body inlet 21 side is the front (upstream side) and the main body exhaust port 30 side is the rear (downstream side), the main body inlet 21 is in the direction of gravity in the housed state of the vacuum cleaner. The main body exhaust port 30 is on the lower side in the direction of gravity action. When the cleaner body 1 is placed horizontally, the lower surface of the cleaner body 1 is parallel to the surface (for example, the floor surface) on which the cleaner body 1 is placed and is perpendicular to the direction of gravity action. Become. Further, in this embodiment, when the vacuum cleaner main body 1 is placed horizontally as shown in FIG. 1, the direction having the main body inlet 21 is the front direction of the cleaner main body 1, and the direction having the main body exhaust port 30 is the main body of the cleaner. 1 is referred to as the longitudinal direction of the cleaner body 1 from the front direction to the rear direction of the cleaner body 1. Further, in this embodiment, when the cleaner body 1 is placed horizontally as shown in FIG. 1, the direction with the handle 16 is upward of the cleaner body 1, and the direction with the substrate 49 is downward of the cleaner body 1. And the height direction of the cleaner body 1 from the upper direction to the lower direction of the cleaner body 1. In this embodiment, as shown in FIG. 8, the direction of the wheel shafts (not shown) on both sides of the cleaner body 1 is referred to as the width direction.

  First, the structure of the cleaner body 1 will be described. The dust collector 2 that collects dust from the sucked air is detachably disposed on the front side of the cleaner body 1. When the longitudinal direction (axial direction) of the dust collector 2 is the gravity action direction (vertical arrangement), the height of the cleaner body 1 is increased. On the other hand, the closer the axial direction of the swirling flow in the dust collector 2 (the axial direction of the dust collecting device 2) is to the gravity acting direction, the greater the separation effect due to the centrifugal separation action, and the axial direction of the swirling flow in the dust collecting device 2 When the angle exceeds 45 degrees with respect to the direction of gravity action, the separation effect due to the centrifugal action is extremely reduced. Therefore, in order to reduce the height of the vacuum cleaner main body 1 and suppress a decrease in the separation effect due to the centrifugal separation action, in this embodiment, the axial direction of the dust collector 2 is 40 degrees to the gravity action direction. It is about 45 degrees. However, in order to increase the separation effect by the centrifugal separation action, the axial direction of the dust collector 2 may be smaller than 40 degrees (for example, 0 degree) with respect to the gravity action direction. Instead of disposing the dust separation unit (swivel unit) 4 on the lower side and the dust storage unit 5 on the upper side, the dust separation unit 4 may be disposed on the upper side and the dust storage unit 5 on the lower side. . In this case, the inlet pipe 3 is preferably connected to the circumferential surface of the front end portion in the axial direction of the dust separator 4.

  The dust collector 2 swirls the sucked air and communicates with the dust separator 4 that separates the dust by a centrifugal separation action (cyclone method), and the dust separator 4 accommodates the dust separated by the dust separator 4. And a dust storage portion 5 to be provided. The dust separator 4 and the dust container 5 are arranged in the axial direction of the dust collector 2 and are connected and communicated with each other in the axial direction. That is, the dust separator 4 is disposed on the front side of the cleaner body 1, and the dust container 5 is disposed on the rear side of the cleaner body 1 with respect to the dust separator 4. The dust separator 4 and the dust container 5 are connected so that the user can easily separate the dust separator 4 and the dust container 5. A tubular main body inlet 21 is provided at the front end of the cleaner body 1. A part of the front end face in the axial direction of the dust separator 4 is open, and the opening is connected to the inlet pipe 3. Instead of the front end surface in the axial direction of the dust separator 4, the circumferential surface of the front end in the axial direction of the dust separator 4 may be connected to the inlet pipe 3. The inlet pipe 3 is preferably formed at the center in the width direction of the cleaner body 1. The inner cylinder 7 and the recessed portion 8 are also preferably formed at the center in the width direction of the cleaner body 1.

  The dust separation unit 4 includes a hollow substantially cylindrical outer cylinder 6 and a hollow substantially cylindrical inner cylinder 7 enclosed in the outer cylinder 6 with a concentric axis with the outer cylinder 6. When the axial direction of the dust separation part 4 is inclined with respect to the gravity action direction in order to prevent the separation effect due to the centrifugal separation action from deteriorating due to the axial center of the swirling flow being shifted in the gravity action direction by gravity. The axis of the inner cylinder 7 may be shifted downward with respect to the axis of the outer cylinder 6. As shown in FIG. 3 (A), one axial end surface (front end surface) of the outer cylinder 6 is closed except for an opening connected to the inlet pipe 3, and the other axial end surface (rear side) of the outer cylinder 6 is closed. The end face is open. The outer cylinder 6 is preferably made of transparent or translucent plastic or resin so that dust accumulation can be seen by the user or a sensor provided outside the outer cylinder 6 can detect the accumulation of dust. One end face (front end face) in the axial direction of the inner cylinder 7 is closed, and the other end face (rear end face) in the axial direction of the inner cylinder 7 is open. As shown in FIG. 3A, a recessed portion 8 that is recessed inward in the axial direction of the inner cylinder 7 is formed at the center of the closed portion of one end surface in the axial direction of the inner cylinder 7. The inlet pipe 3 is opposed to the closed portion of one end surface in the axial direction of the inner cylinder 7, that is, the recessed portion 8. As shown in FIG. 3A, a part of the recessed portion 8 reaches the outer peripheral end of the inner cylinder 7. In order to reduce the pressure loss of air, it is preferable that the opening direction of the recessed part 8 is a downward direction. However, the opening direction of the recessed part 8 may be upward or lateral. As shown in FIG. 3A, at the outer peripheral end of the inner cylinder 7 of the recess 8, the recess 8 does not face straight in the radial direction of the inner cylinder 7 but is slightly inclined in the circumferential direction. As shown in FIG. 1, the depth of the recess 8 in the axial direction is about half of the axial length of the cylindrical portion of the inner cylinder 7. However, the axial depth of the recessed portion 8 may extend over substantially the entire axial length of the cylindrical portion of the inner cylinder 7. In this case, the opening of the recessed portion 8 is formed in a part of the circumferential surface of the inner cylinder 7 over almost the entire length of the cylindrical portion of the inner cylinder 7. Further, a guide tube 38 is connected to the outer peripheral end of the recess 8. The cross section of the guide tube 38 has a substantially quarter circle shape, is formed along the outer peripheral surface of the inner cylinder 7, and the outer peripheral surface of the inner cylinder 7 also forms part of the inner wall surface of the flow path. The guide tube 38 is formed on the outer peripheral surface of the inner cylinder 7 in the circumferential direction by about several centimeters. Therefore, the air that has flowed in the axial direction by the inlet pipe 3 is changed in the radial direction by the recessed portion 8 and further changed in the circumferential direction by the outer peripheral end portion of the inner cylinder 7 of the recessed portion 8. At 38, it can be changed in the circumferential direction. Moreover, it is preferable that the recessed part 8 does not have an unevenness | corrugation and is formed in a curved surface. Thereby, air can be sufficiently swirled while suppressing pressure loss. The guide tube 38 may not be provided. An outer extension 34 extending toward the outer cylinder 6 is formed on the outer periphery of the other axial end surface (rear end face) of the inner cylinder 7. That is, as shown in FIG. 3A, the other axial end surface (rear side end surface) of the inner cylinder 7 has an annular shape with the inner side of the inner cylinder 7 opened.

  As shown in FIG. 3A, a part of the outer extending portion 34 in the circumferential direction is open. With this opening, air outside the inner cylinder 7 can flow into the dust container 5. The inner cylinder 7 is made of an antibacterial metal (for example, silver, copper) or an antibacterial substance (for example, silver, copper) or a coated metal (for example, stainless steel) so as to suppress the growth of bacteria. Preferably it is configured. However, the inner cylinder 7 may be comprised with resin also including a cylindrical part. Then, as shown in FIG. 3A, the outer cylinder 34 is inserted in the axial direction from the other axial end surface of the outer cylinder 6, so that the outer peripheral end of the outer extension 34 comes into contact with the inner periphery of the outer cylinder 6. As a result, the other axial end surface of the outer cylinder 6 is closed. The outer cylinder 6 and the inner cylinder 7 are connected so that the user can easily separate the outer cylinder 6 and the inner cylinder 7. A plurality of through holes 33 are provided on the circumferential surface of the inner cylinder 7. The inner cylinder 7 has a filter function by the plurality of through holes 33. The through-hole 33 allows air to flow from the outer side of the inner cylinder 7 to the inner side of the inner cylinder 7 without large dust flowing into the inner cylinder 7. Although it depends on the suction force, garbage having a weight of 1 yen or more cannot be sucked up in the outer cylinder 6 and may remain in the outer cylinder 6. By connecting the outer cylinder 6 and the inner cylinder 7 so that the user can easily separate the outer cylinder 6 and the inner cylinder 7, the user can easily separate the outer cylinder 6 and the inner cylinder 7 from each other. The dust accumulated in the outer cylinder 6 can be easily discharged, and the hair and lint caught in the through hole 33 of the inner cylinder 7 can be easily removed.

  In order to keep the airtightness of the connecting portion between the dust separator 4 and the dust container 5, a packing 9 is provided on the other axial end surface of the inner cylinder 7. The packing 9 is not only provided on the outer extension 34, but also projects in the axial direction of the inner cylinder 7. Therefore, the inside of the inner cylinder 7 is not completely hollow, and a partially closed space exists due to the packing 9. Further, a recessed portion 39 that is recessed inward in the axial direction of the inner cylinder 7 is formed in a portion of the packing 9 that protrudes to the inner side of the inner cylinder 7. The recess 39 has a handle function. Thereby, the user can hold the dust separation part 4 or the inner cylinder 7 by inserting a finger into the recess 39. A part of the upper side of the extended portion 34 is open and communicates with the outer flow path 35 of the front lid 11. That is, the inside of the outer cylinder 6 and the outside of the cylindrical portion of the inner cylinder 7 communicates with the outer flow path 35 of the front lid 11. As shown in FIG. 3 (A), the circumferential wall surface of the opening on the upper side of the extended portion 34 has a high wall surface on the side facing the opening of the guide tube 38 in the circumferential direction. The wall surface on the opening side of the guide tube 38 is preferably low. For example, assuming that the opening direction of the guide tube 38 is the counterclockwise direction when the dust separation unit 4 is viewed from the front, the left wall surface is high among the circumferential wall surfaces of a part of the upper opening of the extension portion 34, The wall on the right side is low. That is, since a part of the upper side of the extended portion 34 is opened, the circumferential direction of the extended portion 34 is less than one round of the outer periphery of the inner cylinder 7 but is shifted in a spiral shape. Therefore, the swirling flow outside the inner cylinder 7 can hit the circumferentially high wall surface of a part of the opening on the upper side of the extended portion 34 and can smoothly change the direction in the axial direction. Also easily flows to the dust container 5. On the other hand, the inner side of the inner cylinder 7 communicates with the inner flow path 36 of the front lid 11.

  The dust container 5 is provided with a hollow case 10 having an axially one end surface (front end surface) and an axial other end surface (rear side end surface) that are substantially inverted triangular in longitudinal section. One end surface in the axial direction of the case 10 is closed by a front lid 11 that can be opened and closed. A shaft 31 is provided at the lower end of the front lid 11, and the shaft 31 is supported by the lower end of the case 10. The front lid 11 can be rotated back and forth in the axial direction of the case 10 with the shaft 31 as a fulcrum. A claw projects from the upper end portion of the front lid 11 on the case 10 side. On the other hand, a button 17 (which may be a lever) that can be pressed by the user is provided on the upper front side of the case 10, and a transmission rod (rod) 18 extending to the front side of the case 10 is connected to the button 17. One end of the transmission rod 18 is connected to the button 17, and the other end of the transmission rod 18 is formed in a claw shape. The claw at the other end of the transmission rod 18 can be engaged with the claw at the upper end of the front lid 11. When the front lid 11 is closed to the case 10, it is possible to prevent the front lid 11 from being opened by engaging the claw at the other end of the transmission rod 18 and the claw at the upper end of the front lid 11. When the user presses the button 17, the transmission rod 18 slides forward (may rotate upward), and the engagement between the other end of the transmission rod 18 and the upper end of the front lid 11 is engaged. The combination is released and the front lid 11 can be opened from the case 10 by gravity. While the handle 16 is formed in a horizontal direction, the normal direction of one end surface in the axial direction of the case 10 (corresponding to the front lid 11 portion) is inclined by 45 ° to 50 ° with respect to the horizontal direction. That is, when the user holds the handle 16 and lifts the dust container 5, one end surface in the axial direction of the case 10 (corresponding to the front lid 11 portion) faces downward (the direction of gravity action). Therefore, the front lid 11 can be opened from the case 10 by gravity. As will be described later, if the dust collection basket (dust collection container) 12 is urged by a spring (elastic body) to jump out to the front side of the case 10, the dust collection basket 12 pushes the rear surface of the front lid 11. Therefore, when the user presses the button 17, the front lid 11 can be smoothly opened from the case 10 by the pressing force of the dust collecting basket 12. In other words, when the opening surface of the dust collecting basket 12 is pressed by the rear surface of the front lid 11, the dust collecting basket 12 is stored in the case 10 and the stored state is maintained.

  The other axial end surface of the case 10 is closed by a filter 15 that can be opened and closed. A shaft 32 is provided at the lower end of the filter 15, and the shaft 32 is supported by the lower end of the case 10. The filter 15 can be rotated back and forth in the axial direction of the case 10 with the shaft 32 as a fulcrum. The filter 15 is formed with a filter member folded in a pleat shape within a frame body having a substantially square cross-sectional shape. As shown in FIG. 4B, the wave direction of the filter member is preferably the height direction (gravity acting direction). The filter 15 is, for example, a high-density HEPA filter (High Efficiency Particulate Air Filter). A HEPA filter is an air filter having a particle collection rate of 99.97% or more with respect to particles having a rated air volume of 0.3 μm and an initial pressure loss of 245 Pa or less. A packing 25 may be provided on the surface of the filter 15 opposite to the case 10. By the packing 25, the airtightness between the other axial end surface of the dust container 5 and the cleaner body 1 (particularly, the inlet of the intake duct 27) can be maintained. The shaft 31 and the shaft 32 may be shared. Further, the shaft 32 may be provided not at the lower end portion of the filter 15 but at the upper end portion of the filter 15.

  A dust collecting basket 12 is enclosed in the case 10. The shape of the dust collecting basket 12 may be a cage shape with one surface opened, a three-dimensional shape, a box shape, a container shape, or a dustpan shape. That is, the dust collecting basket 12 has a shape recessed on the opposite side to the opening. The cross-sectional shape of the dust collecting basket 12 may be a substantially square shape, a substantially circular shape, or a substantially triangular shape. The cross-sectional shape of the dust collecting basket 12 is preferably smaller from the opening surface toward the bottom surface. As a result, the cross-sectional area increases toward the side (opening side) where the dust is discharged, so that the user can easily discharge the dust accumulated in the dust collecting basket 12. The shape of the dust collecting basket 12 is formed by a frame body (support frame). It is preferable that a mesh member made of metal, nylon, or the like is coated or adhered to the bottom surface of the dust collecting basket 12 other than the opening surface, the top, bottom, left and right surfaces. By providing not only the bottom surface of the dust collecting basket 12 but also the top, bottom, left, and right surfaces, air flow can be secured even if dust accumulates on the bottom surface of the dust collecting basket 12, and the pressure loss of the suction air Can be reduced, and a decrease in suction force can be suppressed. This mesh member is air permeable and has a filter function of collecting dust. A disposable tissue paper may be used instead of the mesh member, or a mesh member and a tissue paper may be combined as long as they are breathable and have a filter function for collecting dust. For example, the user may wear tissue paper on the mesh member. The opening surface of the dust collecting basket 12 coincides with the opening surface of one end surface (front end surface) in the axial direction of the case 10. That is, the opening direction of the dust collecting basket 12 and the opening direction of the one end surface in the axial direction of the case 10 are the same. As shown in FIG. 6, the upper half of the outer peripheral end of the opening surface of the dust collecting basket 12 abuts on the inner peripheral surface of one end surface in the axial direction of the case 10, and the outer peripheral end of the opening surface of the dust collecting basket 12. The lower half is not in contact with the inner peripheral surface of one end surface of the case 10 in the axial direction. The dust collecting basket 12 has a shaft 14 at the bottom. The shaft 14 is supported in the case 10. Therefore, the dust collecting basket 12 can be rotated back and forth in the axial direction of the case 10 with the lower shaft 14 as a fulcrum. Thereby, when the front lid 11 is opened from the dust container 5, a part of the dust collecting basket 12 can be ejected from the dust container 5 by gravity. Since the formation position of the shaft 14 with respect to the case 10 is on the same side (lower side) as the formation position of the shaft 31 with respect to the case 10, the front cover 11 is obstructed when the front cover 11 is opened from the dust container 5. A part of the dust collecting basket 12 can be ejected from the dust container 5 without any trouble. Furthermore, you may equip the axis | shaft 14 with the helical spring which an elastic force acts in the direction which pushes out the dust collection basket 12 to the front cover 11 side. As a result, when the front lid 11 is opened from the dust container 5, a part of the dust collection basket 12 can jump out of the dust container 5 vigorously by the elastic force of the spring. The dust accumulated in 12 can be easily discharged. Further, the dust collecting basket 12 is divided into two parts in the vertical direction, that is, it is preferably composed of two structures, that is, an upper half frame (support) and a lower half frame (support). The two divided dust collecting baskets 12 are connected by a shaft 13 formed outside the bottom surface of the dust collecting basket 12. Therefore, as shown in FIG. 4 (A), the dust collecting basket 12 has the opening surface of the dust collecting basket 12 split vertically, with the middle of the bottom as a fulcrum. In particular, when a part of the dust collection basket 12 jumps out of the dust container 5, the dust collection basket 12 breaks up and down. As a result, the user can more easily discharge the dust accumulated in the dust collecting basket 12. In particular, dust stuck to the inner surface of the dust collecting basket 12 can be easily removed. However, the upper and lower divided configuration of the dust collecting basket 12 is not essential. In addition to the fact that the front side of the case 10 is inclined by 40 ° to 45 ° with respect to the direction of gravity as described above, the dust collection basket 12 jumps out of the dust container 5 by 30 °, so that the inside of the dust collection basket 12 The dust accumulated on the surface can be discharged substantially in the direction of gravity.

  An outer channel 35 and an inner channel 36 penetrating in the axial direction are formed in the front lid 11. The outer flow path 35 is formed on the upper side of the front lid 11, and one end of the outer flow path 35 communicates with the opening of the extended part 34, particularly between the outer cylinder 6 and the inner cylinder 7 of the dust separation part 4. The other end of the outer flow path 35 communicates with the opening of the dust collecting basket 12 in the case 10. In order to prevent the dust accumulated in the dust collecting basket 12 from flowing back to the outer flow path 35 and the dust separation part 4 when the vacuum cleaner is stopped, the other end of the outer flow path 35 is the opening of the dust collecting basket 12. Of these, it is preferable to communicate with the upper half or near the upper end. However, the other end of the outer flow path 35 may communicate with the central portion of the opening of the dust collecting basket 12. Furthermore, in order to prevent the dust accumulated in the dust collecting basket 12 from flowing back to the outer flow path 35 and the dust separator 4 when the vacuum cleaner is stopped, A check valve (not shown) that covers the flow path 35 is preferably formed. The check valve rotates into the dust collecting basket 12 with the upper end as a fulcrum. However, the check valve is not an essential configuration. The cross-sectional area of the outer flow path 35 increases from one end of the outer flow path 35 toward the other end. The formation direction of the outer flow path 35 is a direction from the outer side of the front lid 11 toward the center side from one end of the outer flow path 35 to the other end. That is, the direction is from the outside of the dust collecting basket 12 toward the center side. In order to suppress the turbulence of the air flowing into the dust collecting basket 12 from the outer flow path 35, the outer flow path 35 is formed in the direction of the wall surface (upper wall surface) on the side where the outer flow path 35 of the dust collecting basket 12 communicates. Is preferred. The inner flow path 36 is formed from the center of the front lid 11 to the lower side, and one end of the inner flow path 36 communicates with the other end opening in the axial direction of the inner cylinder 7 (inside the inner cylinder 7) of the dust separator 4; The other end of the inner flow path 36 communicates with the case 10, particularly with the outside of the dust collecting basket 12. The other end of the inner flow path 36 is preferably in communication with the lower outside of the dust collecting basket 12. The inner flow path 36 is formed avoiding the outer flow path 35. Contrary to the outer flow path 35, the cross-sectional area of the inner flow path 36 is reduced from one end of the inner flow path 36 toward the other end.

  A handle 16 that extends in the horizontal direction and can be gripped by the user is provided on the outer side of the upper portion of the dust container 5. The user can hold the handle 16, lift the dust container 5 upward, and remove only the dust container 5 from the cleaner body 1 while leaving the dust separator 4 in the cleaner body 1. In addition, if the dust separation part 4 and the dust storage part 5 are connected, if the user holds the handle 16 and lifts the dust storage part 5 upward, the dust separation part 4 and the dust storage part 5 will be described. And, that is, the dust collector 2 itself can be removed from the cleaner body 1. As shown in FIG. 1, the axial direction other end surface (corresponding to the filter 15 portion) of the dust container 5 is preferably inclined toward the case 10 than the vertical surface (gravity acting direction). That is, it is preferable that the lower part is closer to the case 10 side than the upper part of the other axial end surface of the dust container 5. Moreover, as shown in FIG. 1, the formation direction of the axial direction one end surface (equivalent to front cover 11 part) of the dust accommodating part 5 is about 40 to 45 degrees on the case 10 side from the vertical surface (gravity acting direction). Inclined. That is, the lower part is closer to the case 10 side than the upper part of the one axial end surface of the dust container 5. As a result, the one end surface in the axial direction and the other end surface in the axial direction of the dust container 5 have an inverted C shape with respect to the vertical surface (gravity acting direction). Thereby, when a user lifts the dust accommodating part 5 upward, it becomes less caught, and the user can easily remove the dust accommodating part 5 from the cleaner body 1. Then, the user can easily remove the dust separator 4 from the cleaner body 1 by holding the recess 39 and lifting the dust separator 4 upward or obliquely upward after removing the dust container 5. As shown in FIG. 1, it is preferable that the axial direction one end surface (corresponding to the inlet pipe 3 portion) of the dust separating portion 4 is inclined toward the outer cylinder 6 rather than the vertical surface (gravity acting direction). That is, it is preferable that the lower part is closer to the outer cylinder 6 side than the upper part of the other axial end surface of the dust separator 4. As a result, when the user lifts the dust separator 4 upward or obliquely upward, there is less catching, and the user can easily remove the dust separator 4 from the cleaner body 1. Further, not only when the user removes the dust separator 4, but also when the dust separator 4 and the dust container 5 are integrated, that is, when the dust collector 2 itself is removed from the cleaner body 1. Since the one end surface in the axial direction and the other end surface in the axial direction have an inverted C shape with respect to the vertical surface (the direction of gravity action), the user is less likely to be caught when lifting the dust collector 2 upward. Can easily remove the dust collector 2 from the cleaner body 1.

  A hose joint pipe 20 is inserted into the main body inlet 21 and can hold the hose joint pipe 20. A packing 22 is provided at one end of the main body inlet 21. Thereby, the airtightness of the hose joint pipe 20 and the inlet pipe 3 can be maintained. A caster support portion 23 for supporting casters is provided at the front lower end of the vacuum cleaner body 1 (below the dust collector 2). An intake duct 27 extending in the front-rear direction of the cleaner body 1 is provided on the upper rear side in the cleaner body 1. An opening 27 a at one end in the extending direction of the intake duct 27 faces the filter 15. An auxiliary filter 26 is provided near the opening 27 a at one end of the intake duct 27. Thereby, it is possible to suppress the electric blower 28 from sucking the dust remaining outside the dust collector 2. The other end in the extending direction of the intake duct 27 is closed, and the lower portion in the vicinity of the other end in the extending direction of the intake duct 27, that is, the electric blower 28 side is opened as a discharge port 27 b of the intake duct 27. A dust removing device 24 that removes dust adhering to the filter 15 is provided at a position in contact with the filter 15 at an upper portion of the opening 27 a at one end of the intake duct 27 of the cleaner body 1. The dust removing device 24 includes a spiral spring (elastic body) on the outer periphery of the rotating body. The dust removing device 24 is rotated by a motor or by pulling out a cord 47 provided around the cord reel 41, and a spiral spring bounces the filter member of the filter 15, so that dust attached to the filter 15 is shaken off. As described above, since the wave direction of the filter 15 is in the height direction, the dust that has been shaken off easily falls in the direction of gravity. The dust shaken off from the filter 15 accumulates in the case 10. Accordingly, clogging of the filter 15 can be suppressed, a decrease in air pressure loss can be suppressed, and a decrease in suction force can be suppressed.

  As shown in FIG. 1, an electric blower 28 that generates a suction force is provided on the lower rear side in the cleaner body 1. The electric blower 28 is installed in a vertical position with the suction port 28a of the electric blower 28 facing upward. The electric blower 28 is longest from the surface of the suction port 28a to the surface opposite to the surface of the suction port 28a. Therefore, the length of the vacuum cleaner main body 1 from the hose joint pipe 20 to the main body exhaust port 30 can be shortened by installing the electric blower 28 vertically so that the suction port 28a of the electric blower 28 faces upward. . An intake duct 27 is provided in the upper part of the electric blower 28 in the cleaner main body 1, and the suction port 28 a of the electric blower 28 and the discharge port 27 b of the intake duct 27 are connected to each other. In the present embodiment, when the electric blower 28 is installed in the cleaner body 1, the electric blower 28 has an intake port 28 a on the upper surface of the upper part and an exhaust port 28 b on the lower side of the electric blower 28. Is done. In the cleaner body 1, an exhaust duct 40 communicating with the exhaust port 28 b of the electric blower 28 is provided downstream of the electric blower 28 and in front of the electric blower 28. Further, a filter 29 communicating with the exhaust duct 40 is provided in the cleaner body 1 on the downstream side of the exhaust duct 40 and on the front side of the exhaust duct 40. The exhaust duct 40 and the filter 29 are fixed by fixing means such as screws. This is because the exhaust duct 40 and the filter 29 are fixed so that the airtightness between the exhaust duct 40 and the filter 29 can be maintained, and all the exhaust gas emitted from the exhaust port 28b of the electric blower 28 can pass through the filter 29. It is to do. The filter 29 is formed with a filter member folded in a pleat shape in a frame body having a substantially square cross section. The wave direction of the filter member is preferably the height direction (gravity acting direction). The filter 29 is, for example, a high-density ULPA filter (Ultra Low Penetration Air Filter). The ULPA filter is an air filter having a particle collection rate of 99.9995% or more for particles having a rated air volume of 0.15 μm and an initial pressure loss of 245 Pa or less. The particle collection efficiency is higher than the particle collection efficiency. And the main body exhaust port 30 is provided in the rear-end surface of the cleaner body 1. FIG.

  As shown in FIG. 8, the cord 47 has a plug 43 at the tip. Electricity is obtained by inserting the plug 43 into an outlet in a room or the like. When using a vacuum cleaner other than the rechargeable vacuum cleaner, the electric blower 28 and the like cannot be operated unless the plug 43 is inserted into an outlet. Therefore, it is preferable to provide the cord reel 41 in a place where it does not get in the way when using the electric vacuum cleaner. Hereinafter, a place where the cord reel 41 is provided is referred to as a cord reel chamber 42. When the cord reel chamber 42 is provided in the front portion of the cleaner body 1 so that the plug 43 and the cord 47 come out from the front portion of the cleaner body 1, the plug 43 and the cord 47 come out in the traveling direction, so that cleaning is performed. Difficult to handle. Even when the cord reel chamber 42 is provided on the side surface or upper surface of the cleaner body 1 so that the plug 43 or the cord 47 comes out from the side surface or upper surface of the cleaner body 1, it is difficult to handle when cleaning. By providing the cord reel chamber 42 at the rear part of the cleaner main body 1 so that the plug 43 and the cord 47 come out from the rear end surface of the cleaner main body 1, it becomes easy to handle without disturbing the moving direction or the direction change. In the present embodiment, the electric blower 28 and the cord reel chamber 42 are provided adjacent to each other in the cleaner body 1. In addition, the electric blower 28 and the cord reel chamber 42 are provided behind the dust collector 2 in the cleaner main body 1. As shown in FIG. 8, in this embodiment, the length of the cord reel chamber 42 in the vertical direction is longer than the length of the electric blower 28 in the vertical direction, and is longer than the length in the vertical direction of the electric blower 28 and the exhaust duct 40. Also short.

  FIG. 9 is an exploded perspective view of the intake duct, the exhaust duct, the case, the filter, and the electric blower of the present embodiment. FIG. 10 is a perspective view of the intake duct of the present embodiment as viewed from the electric blower side. FIG. 11 is a bottom view of the intake duct side of the embodiment of the present invention as viewed from the elastic member side. As shown in FIGS. 1 and 9, the electric blower 28 has a substantially circular cross section in the vertical direction. The outer diameter of the upper part of the electric blower 28 in which the blower is arranged is larger than the outer diameter of the lower part of the electric blower 28 in which the electric motor is arranged. As shown in FIG. 9, the case 45 for housing the electric blower 28 is a container shape having a substantially circular cross section in the vertical direction, an open top surface, and a closed bottom surface. The exhaust duct 40 is connected. The electric blower 28 is inserted into the case 45. The upper side of the electric blower 28 is supported on the back surface of the bottom surface of the intake duct 27 via the elastic member 101 near the suction port 28a, and the lower side of the electric blower 28 is inside the bottom surface of the case 45 via the vibration isolator 113. It is supported by. The electric blower 28 is supported only on the upper surface and the lower surface, and the side surface is not in contact with the case 45. Therefore, it is difficult for vibration of the electric blower 28 to be transmitted to the case 45 and the intake duct 27. The elastic member 101 has an annular shape having a larger inner diameter than the suction port 28a, and is made of an elastic material such as rubber. Even if the elastic member 101 does not have an annular shape, it only needs to have a shape (for example, a polygonal shape) covering the periphery of the suction port 28a. The vibration isolator 113 has a columnar shape or a cylindrical shape, and is made of an elastic material such as rubber. Since the vibration isolator 113 only needs to have a support function, it may be configured by a spring. Since the lower surface of the electric blower 28 is supported only by the bottom surface of the case 45 and the vibration isolating material 113, the weight (several hundred g) of the electric blower 28 is added to the vibration isolating material 113. The vibration isolator 113 is compressed in the vertical direction and elastically deformed. As shown in FIG. 9, the opening on the upper surface of the case 45 is fixed and fastened to the intake duct 27 via the airtight packing 103 with five screws 107. A space containing the electric blower 28 is formed by the bottom surface of the intake duct 27 and the case 45. The bottom surface of the intake duct 27 may be regarded as a part of the case 45 that houses the electric blower 28. Since the upper surface of the electric blower 28 is pressed by the intake duct 27 by the screwing 107, the pressed force is applied to the vibration isolator 113 in addition to the weight of the electric blower 28. The elastic member 101 is also compressed in the vertical direction and elastically deformed.

  As shown in FIG. 9, the airtight packing 103 between the intake duct 27 and the case 45 has a substantially annular shape, and has a size corresponding to the edge 110 of the upper opening of the case 45. The hermetic packing 103 is made of an elastic material such as rubber. The hermetic packing 103 is fitted into the edge 110 of the case 45 and is disposed in contact with the intake duct 27. The airtight packing 103 disposed between the intake duct 27 and the case 45 is secured from the duct airtight surface 27b of the intake duct 27 by screws 107 provided around the annular duct airtight surface 27b of the intake duct 27. The pressure in the downward direction and the pressure in the upward direction from the edge 110 of the case 45 are uniformly received. The airtight packing 103 that has received the pressure is deformed between the intake duct 27 and the case 45.

  FIG. 13 shows a cross-sectional shape of the hermetic packing 103. FIG. 13A is a view when the airtight packing 103 is fitted between the intake duct 27 and the case 45, and FIG. 13B shows a sectional view of the airtight packing 103. In the hermetic packing 103, an annular inner member and an annular outer member are integrally formed via an upper connecting portion. The upper part of the inner member protrudes slightly upward. An exhaust lip 103a extending upward from the inner member is integrally formed on the upper part of the outer member. The edge 110 of the case 45 is sandwiched between the inner member, the outer member, and the connecting portion. A crest B 110 a is formed on the upper surface of the edge portion 110 and bites into the connecting portion of the airtight packing 103. In particular, the airtight packing 103 and the edge portion 110 of the case 45 are brought into close contact with each other by the mountain portion B110a. Furthermore, the airtight packing 103 and the duct airtight surface 27b of the air intake duct 27 are brought into close contact with each other when the exhaust lip 103a and the upper part of the inner member come into contact with each other. Further, the exhaust lip 103a of the airtight packing 103 has a force that causes the exhaust lip 103a to expand outwardly when the exhaust pressure 116 in the direction of the arrow is increased from the electric blower 28 incorporated in the case 45. The structure is such that the contact pressure between 103a and the duct airtight surface 27b increases, and the airtightness of the exhaust can be further increased. In this embodiment, the hermetic packing 103 is an elastic member having a large deformation amount and low hardness. However, an elastic member having higher hardness may be used when pressure resistance is required. Further, there are five places where the air intake duct 27 and the case 45 are fixed in order to uniformly deform the airtight packing 103. However, if the airtight packing 103 can be uniformly deformed, it may not be 5 places or other than screws. The fixing method (for example, clip or press fitting) may be used.

  The flow of air that has passed through the dust collector 2 will be described. The air flow that has passed through the dust collector 2 is deflected by the intake duct 27 and flows into the electric blower 28 from the suction port 28a. The inflowing air flow is boosted by the impeller in the electric blower 28 and pushed out from the discharge port 28b to the space formed by the intake duct 27 and the case 45. A filter 29 is provided in the opening of the exhaust duct 40 on the side opposite to the case 45. All of the air pushed out into the space formed by the intake duct 27 and the case 45 passes through the filter 29 and is diffused into the atmosphere through the cleaner body 1. The air flow that has passed through the dust collector 2 may not be filtered by the filter 15 provided in the dust collector 2, or fine dust may be mixed when the dust collector 2 is attached. If there is a filter 29 that passes all the exhaust gas downstream of the electric blower 28, fine dust can be filtered and made into clean air, so that the air in the room is not polluted. Moreover, since all the carbon powder generated from the electric blower 28 passes through the filter 29 and is filtered, clean air can be obtained.

  As shown in FIG. 10, the elastic member 101 that supports the upper portion of the electric blower 28 is fixed to the intake duct 27 by an annular fixed cover 102. The outer diameter of the fixed cover 102 is larger than the outer diameter of the elastic member 101, and the inner diameter of the fixed cover 102 is larger than the inner diameter of the elastic member 101, but the inner diameter of the fixed cover 102 is smaller than the outer diameter of the elastic member 101. Therefore, the outer peripheral side of the elastic member 101 is covered and fixed by the inner peripheral side of the fixed cover 102. The outer diameter of the fixed cover 102 is smaller than the inner diameter of the duct airtight surface 27b, and the fixed cover 102 is accommodated inside the duct airtight surface 27b. As shown in FIG. 10, an annular positioning rib 108 is formed around the back surface of the discharge port 27 b of the intake duct 27. The positioning rib 108 includes two inner and outer ribs. The elastic member 101 is arranged so that the fixing groove 101c of the elastic member 101 and the positioning rib 108 of the intake duct 27 are in contact with each other, and is fastened to the intake duct 27 by the fixing cover 102 with six screws. As shown in FIG. 11, a positioning recess 105 is provided at one location on the inner peripheral side of the duct airtight surface 27 b of the intake duct 27 and is used for positioning with the positioning projection 102 a of the fixed cover 102. As a result, positioning is easy and assembly time can be shortened.

  A boss 104 for receiving a screw for fixing the fixed cover 102 protrudes from the intake duct 27. This is because the back surface of the wall 111 from which the boss 104 of the intake duct 27 protrudes is an air path that guides the air flow from the dust collector 2 to the electric blower 28, so that the fixed cover 102 is fixed to the intake duct 27. In order to do this, it is necessary to increase the thickness of the wall 111 or to provide a protrusion on the air passage. By fixing the fixed cover 102 with a countersunk screw, the fixed cover 102 can be fixed to the intake duct 27 without increasing the thickness of the wall 111 and without projecting a protrusion in the air passage. Further, the contact between the screw and the electric blower 28 can be prevented.

  FIG. 12 is a perspective view of the elastic member of the present embodiment. In the elastic member 101, an anti-vibration protrusion 101e that performs a vibration-proof function and a vibration-proof member hermetic portion 101a that performs a hermetic holding function are integrally formed on an annular base. It is preferable that the base, the vibration isolating protrusion 101e, and the vibration isolating member airtight portion 101a are made of the same material. The anti-vibration protrusions 101e are provided at eight locations on the annular protruding portion formed on the inner peripheral side of the anti-vibration member airtight part 101a. The tip of the anti-vibration protrusion 101e contacts the casing surface 28c. Since the anti-vibration protrusions 101e are independent from each other, when the intake duct 27 is fastened to the case 45 with screws, the tip of the anti-vibration protrusion 101e is crushed between the protrusions and the electric blower 28 is an elastic member. It is fixed at 101 and vibration can be suppressed. Even if the anti-vibration protrusions 101e are crushed, gaps may remain between the anti-vibration protrusions 101e. In this embodiment, the anti-vibration protrusions 101e are divided into eight pieces, but the number of anti-vibration protrusions 101e may be different or connected in a ring shape. The anti-vibration member hermetic portion 101a is formed on the outer peripheral side of the anti-vibration protrusion 101e. The vibration-proof member hermetic portion 101a is formed of an annular thin plate, but the tip extends to the outer peripheral side with respect to the root. The tip of the vibration-proof member airtight portion 101a contacts the casing surface 28c. Since the anti-vibration member hermetic portion 101a is made of a thin plate, even if it is made of the same material (for example, rubber) as the anti-vibration projection 101e, the anti-vibration projection 101e is less rigid and easily elastically deformed. It is preferable that the anti-vibration protrusion 101e arranged in an annular shape and the annular anti-vibration member hermetic portion 101a have a concentric positional relationship. Instead of arranging the anti-vibration protrusion 101e on the inner peripheral side and the anti-vibration member airtight part 101a on the outer peripheral side, the anti-vibration member air-tight part 101a may be arranged on the inner peripheral side and the anti-vibration protrusion 101e on the outer peripheral side.

  FIG. 15 is a perspective view of the fixed cover of this embodiment as viewed from the intake duct side. As shown in FIG. 15, the fixed cover 102 has an annular shape. An annular airtight surface 102 b is formed on the innermost peripheral portion of the fixed cover 102. A rib 102d protruding in a cylindrical shape is formed on the outer periphery of the airtight surface 102b. Further, six attachment holes 102c into which screws can be inserted are formed in the outer periphery of the rib 102d in the circumferential direction. A positioning projection 102a is formed at one location on the outermost periphery of the fixed cover 102 so as to protrude outward. When the elastic member 101 can be fixed to the intake duct 27 by forming an insert or the like, the fixing cover 102 may not be provided.

  FIG. 14A is a cross-sectional view of one side of the intake duct, the fixed cover, and the elastic member of the present embodiment, and FIG. 14B is a cross-sectional view of one side of the elastic member of the present embodiment. As shown in FIG. 14B, the upper surface of the base body of the elastic member 101 is recessed, and an annular fixing groove 101c is formed. A cylindrical airtight portion 101b is formed on the outermost periphery of the base, and the lower end of the airtight portion 101b protrudes downward to form a convex portion 101d. If there is no fixed cover 102, the convex portion 101d may be omitted. Of the lower surface of the base, the portion corresponding to the fixing groove 101c and the inner portion of the portion corresponding to the fixing groove 101c protrude downward, and the anti-vibration protrusion 101e is formed in the protruding portion. . The protruding direction of the anti-vibration protrusion 101e is the vertical direction, which is the direction in which the elastic member 101 receives a compressive force from the intake duct 27 and the electric blower 28. Note that the portion protruding downward has an annular shape. An anti-vibration member hermetic portion 101a is formed on the lower surface of the base portion corresponding to the fixing groove 101c and on the outer side of the portion corresponding to the fixing groove 101c. The vibration-proof member hermetic portion 101a is formed of a thin plate of about several mm and has a cylindrical shape. The plate thickness of the vibration-proof member hermetic portion 101a is smaller than the radial thickness of the vibration-proof projection 101e. The upper side (base side) of the anti-vibration member airtight portion 101a is formed in the vertical direction, and the lower side (tip side) of the vertical center is about 60 degrees with respect to the vertical direction (axial direction). When the horizontal direction (radial direction) is used as a reference, the outer side is formed to extend outward by about 30 degrees, and the tip of the vibration-proof member airtight part 101a reaches the lower part of the convex part 101d. As shown in FIG. 14B, the position of the tip of the vibration-proof member hermetic portion 101a protrudes from the position of the tip of the vibration-proof projection 101e when the base of the elastic member 101 is used as a reference. That is, the vibration-proof member airtight portion 101a is bent outward from the middle. However, the vibration-proof member hermetic portion 101a may extend outward from the root end. The vertical position of the bent portion of the vibration-proof member hermetic portion 101a substantially corresponds to the vertical position of the root end of the vibration-proof projection 101e. The base side of the bent portion of the vibration-proof member airtight portion 101a is formed of a thin plate as a part of the vibration-proof member airtight portion 101a, whereas the root of the vibration-proof member 101e is a portion protruding to the lower side of the base body. It will consist of

  As shown in FIG. 14A, the elastic member 101 is disposed outside the annular eyeball portion 28d that forms the edge of the suction port 28a. The elastic member 101 is disposed so that the inner peripheral surface of the elastic member 101 contacts the outer peripheral surface of the eyeball portion 28d. Thereby, the positional deviation to the radial direction of the upper part of the electric blower 28 is suppressed. The lower surface of the convex portion 101 d of the elastic member 101 contacts the upper surface of the airtight surface 102 b of the fixed cover 102, and the upper surface of the airtight portion 101 b of the elastic member 101 contacts the lower surface of the wall 111 of the intake duct 27. Is fixed to the wall 111 of the intake duct 27 by the fixed cover 102. The airtight portion 101b receives pressure from the airtight surface 102b and the wall 111 when the fixed cover 102 is fastened by screws. The airtight portion 101 b that has received the pressure is deformed in the gap 112, and a reaction force for the deformation is generated on the airtight surface 102 b and the wall 111. In addition, an annular crest 27c provided at a position corresponding to the airtight portion 101b of the wall 111 of the intake duct 27 pierces the airtight portion 101b, and the airtightness of the intake duct 27 and the elastic member 101 can be maintained. On the other hand, a vibration-proof member hermetic portion 101a is provided to keep the elastic member 101 and the electric blower 28 hermetic. Since the vibration-proof member hermetic portion 101a is a thin plate and extends outward, the tip of the vibration-proof member hermetic portion 101a bends due to elastic deformation when coming into contact with the casing surface 28c of the electric blower 28. The exhaust pressure 116 and the suction pressure 117 of the electric blower 28 are pressed against the casing surface 28c in the operating state of the electric blower 28, and airtightness is ensured. The casing surface 28c in contact with the vibration-proof member airtight portion 101a and the casing surface in contact with the vibration-proof projection 101e are formed in a straight line, but have a groove therebetween. The tip of the vibration-proof member hermetic portion 101a has a thin plate shape so as to easily deform and follow the direction in which the intake / exhaust pressure is applied (the inner direction in the radial direction). The tip of the vibration-proof member hermetic portion 101a is configured to extend approximately 30 degrees outward, and when assembled, the tip of the vibration-proof member hermetic portion 101a is crushed more than 30 degrees and incorporated. As a result, the vibration-proof member hermetic portion 101a itself is always pressed against the casing surface 28c and has the function of keeping the hermeticity. Furthermore, in the state before the assembly (initial state), the tip of the vibration-proof member hermetic portion 101a is configured to spread outward, so that the operator does not have to worry about the tip of the vibration-proof member hermetic portion 101a turning over when assembled. And can be incorporated stably.

  As shown in FIG. 14 (A), a space (fixing groove 101c) remains between the protruding portion of the base body, which is the base portion of the anti-vibration protrusion 101e, and the positioning rib 108 of the intake duct 27. Has been. Therefore, when the elastic member 101 is crushed by the intake duct 27 and the electric blower 28, not only the anti-vibration projection 101e is elastically deformed, but also the protruding portion of the base, which is the base portion of the anti-vibration projection 101e, is elastically deformed. To do. Even after the elastic deformation, the space (fixing groove 101c) remains between the protruding portion of the base body, which is the base portion of the anti-vibration projection 101e, and the positioning rib 108 of the intake duct 27. The vibration of the electric blower 28 is not easily transmitted to the intake duct 27. On the other hand, as shown in FIG. 14A, no space (fixing groove 101c) is left between the base portion corresponding to the root portion of the vibration-proof member airtight portion 101a and the positioning rib 108. In the first place, since the vibration-proof member airtight portion 101a is a thin plate and extends outward, the vibration-proof member airtight portion 101a is less rigid than the vibration-proof projection 101e, and the vibration of the electric blower 28 is difficult to transmit to the intake duct 27. It is not necessary to deform the base portion corresponding to the base portion of the portion 101a, and it is not necessary to leave a gap. In this embodiment, since the vibration isolation and airtightness with the electric blower 28 are configured in different shapes, it is possible to obtain an optimal shape for vibration isolation and an optimal shape for airtightness. In this embodiment, synthetic rubber having a hardness of about 40 degrees is used for the elastic member 101, but the hardness may be changed according to the influence of vibration. At this time, since the vibration-proof member airtight portion 101a is a thin plate that is not easily affected by hardness, it can be kept airtight.

  The elastic member 101 fixed to the intake duct 27 contacts the vibration-proof and airtight portion 101 a with the casing surface 28 c of the electric blower 28. When the intake duct 27 and the case 45 are fixed with screws 107, the vibration-proof airtight portion 101 a is pushed by the electric blower 28 and the wall 111 of the intake duct 27, and the vibration-proof airtight portion 101 a and the convex portion 101 d have a gap 112. Deforms around and around. This deformation becomes a reaction force and increases the contact pressure between the vibration-proof airtight portion 101a and the casing surface 28c. For this reason, the airtightness of the vibration-proof airtight part 101a and the casing surface 28c is maintained. The electric blower 28 sucks the air flow from the dust collector 2 through the intake duct 27, pressurizes it with an impeller, and pushes it out into the case 45 through the exhaust port 28b. Therefore, the suction side space 114 of the elastic member 101 has a negative pressure and the exhaust side space 115 has a positive pressure. Since the elastic member 101 maintains the airtightness of the suction side space 114 and the exhaust side space 115 by the vibration-proof airtight portion 101a and the airtight portion 101b, air is prevented from flowing from the exhaust side space 115 to the intake side space 114, Reduced suction performance and exhaust circulation. The elastic member 101 supports the electric blower 28 and still has a gap 112 around it, and softly holds the electric blower 28. For this reason, the elastic member 101 can suppress transmission of vibration from the electric blower 28 to the intake duct 27. In this embodiment, synthetic rubber is used for the elastic member 101, but rubber having lower hardness may be used to reduce the amount of vibration transmitted to the intake duct 27.

  The lower side of the electric blower 28 is supported by the case 45 via a vibration isolating material 113. The anti-vibration material 113 not only prevents vibration from being transmitted to the case 45 but also prevents the electric blower 28 from rotating. In the present embodiment, synthetic rubber is used, but rubber having lower hardness may be used to reduce the amount of vibration transmitted to the case 45.

  Next, the noise of a vacuum cleaner will be described. The vacuum cleaner generates three typical noises by the built-in electric blower 28.

The first is turbulent noise generated over a wide band due to flow disturbance. In the vacuum cleaner main body 1 as in the present embodiment, the number of rotations of the built-in electric blower 28 is as fast as 36000 revolutions per minute when no load is applied, and the air volume is as high as 2 m ³ / min. Since the flow path is narrow inside the electric blower 28 and the vacuum cleaner main body 1, the air flow generated by the electric blower 28 is locally turbulent and generates turbulent noise.

  The second is a blade sound having a frequency that is an integral multiple of the product of the number of impeller blades and the number of rotations. The impeller of the electric blower 28 drives the fluid by generating a pressure difference on the surface of the blade. Therefore, in the electric blower having stationary blades downstream of the impeller as in the present embodiment, a pressure difference is generated at the boundary between the stationary blades and the impeller, and it fluctuates. It is easy to generate a blade sound having a frequency that is an integral multiple of the product.

  The third is a rotational vibration sound having a sound with a frequency of the rotational speed. The electric blower 28 is a rotating machine that rotates the impeller by electromagnetic force between the rotor and the stator, and generates a suction force by generating a differential pressure before and after the impeller by the movement of the impeller. The rotating machine has a slight eccentric imbalance around the rotating shaft, and generates an exciting force with a rotation period in the bearing. The electric blower has an eccentric imbalance in the rotor and the impeller, and these rotate to generate a periodic exciting force on the bearing, which becomes rotational vibration. A part of the rotational vibration transmitted to the bearing propagates as vibration from the surface of the electric blower and the other from the member that supports the electric blower, vibrates the main body of the cleaner, and is emitted as sound to the atmosphere. This is rotational vibration sound.

  This embodiment can improve cleaner noise by reducing unpleasant low-frequency noise caused by rotational vibration noise. In order to reduce the rotational vibration noise, there are a method of reducing the eccentric imbalance of the electric blower that is the generation source and suppressing the rotational vibration, and a method of reducing the rotational vibration in the propagation path from the electric blower. In this embodiment, the latter is improved.

  In the case of the electric vacuum cleaner including the filter 29 downstream of the electric blower 28 as in this embodiment, there is a problem that the eyes are clogged when a large amount of dust passes through the filter 29. In such a case, in the vacuum cleaner such as the present embodiment, a positive pressure of 20 kPa or more is applied to the exhaust side space 115. For this reason, the airtight surface has to be pressed firmly in order to have a structure that can withstand the pressure. However, in consideration of suppression of rotational vibration transmission in order to reduce rotational vibration noise, if the airtight surface is pressed firmly, the rigidity increases, and the amount of vibration transmission increases. Therefore, in this embodiment, the surface that suppresses vibration isolation and the surface that maintains airtightness are configured separately. The upper side of the electric blower 28 is supported by the intake duct 27 via the elastic member 101, and the lower side is supported by the case 45 via the vibration isolator 113. The rotational vibration of the electric blower 28 is propagated from the elastic member 101 and the vibration isolator 113 in the direction perpendicular to the rotation axis and in the thrust direction. For this reason, it is necessary to lower the rigidity of supporting the vertical direction and the thrust direction of the electric blower 28.

  In this embodiment, the elastic member 101 softly supports the electric blower 28 to reduce the propagation of vibration in the thrust direction. Further, by providing the gap 112, the anti-vibration protrusion 101e softly supports the direction perpendicular to the rotation axis of the electric blower 28, and reduces vibration propagation. For this reason, rotational vibration transmitted to the main body is reduced, and rotational vibration noise can be reduced.

  Further, the vibration-proof member airtight surface 101a provided in a different shape is configured such that the tip is bent when it comes into contact with the casing surface 28c of the electric blower 28. The exhaust pressure 116 from the electric blower 28 and the suction pressure of the electric blower 28 When the electric blower 28 is operated with respect to the force 117, the electric blower 28 is pressed against the casing surface 28c to ensure airtightness. Further, the tip of the vibration-proof member hermetic portion 101a has a thin plate shape so as to easily deform and follow the direction in which the intake / exhaust pressure is applied. Further, the tip of the vibration-proof member hermetic portion 101a is configured to extend outward by approximately 30 degrees, and when assembled, the tip of the vibration-proof member hermetic portion 101a is crushed more than 30 degrees and incorporated. As a result, the vibration-proof member hermetic portion 101a itself is always pressed against the casing surface 28c and has the function of keeping the hermeticity. Furthermore, in the state before the assembly (initial state), the tip of the vibration-proof member hermetic portion 101a is configured to spread outward, so that the operator does not have to worry about the tip of the vibration-proof member hermetic portion 101a turning over when assembled. And can be incorporated stably. For this reason, the backflow from the exhaust side space 115 of the electric blower 28 to the suction side space 114 is prevented, and deterioration of the suction performance is prevented.

  FIG. 2A shows a perspective view of the dust collector of the embodiment of the present invention, and FIG. 2B shows a cross-sectional view of the dust collector of the embodiment of the present invention. The user can remove the dust collector 2 from the cleaner body 1 by holding the handle 16 and lifting the dust collector 2 upward. However, the dust separator 4 may be left in the cleaner body 1 and only the dust container 5 may be removed from the cleaner body 1. As shown in FIG. 2A, the outer shape of the cross section of the dust separation portion 4 viewed from the axial direction is a substantially circular shape. The outer shape of the cross section of the dust container 5 is substantially circular at the front lid 11, but is substantially square after the front lid 11, and is also substantially square at the filter 15. As shown in FIG. 2B, the opening direction at one axial end of the case 10 and the opening direction at the other axial end of the case 10 are not in a straight line and differ by about 45 ° to 50 °. That is, the axial direction of the dust container 5 is bent slightly forward from the middle. As described above, one end surface in the axial direction of the dust collector 2 (portion of the inlet pipe 3) faces slightly downward (the direction of gravity action), and the other end surface in the axial direction of the dust collector 2 (portion of the filter 15) is also , Slightly facing downward (gravity acting direction), one end surface in the axial direction and the other end surface in the axial direction of the dust collector 2 have an inverted C shape with respect to the vertical surface (gravity acting direction). Therefore, when the dust collector 2 is lifted upward, the amount of catch is reduced, and the user can easily remove the dust collector 2 from the cleaner body 1.

  FIG. 3A shows a perspective view of the inner cylinder and the outer cylinder of the embodiment of the present invention, and FIG. 3B shows a perspective view of the back side of the inner cylinder of the embodiment of the present invention. One end surface of the outer cylinder 6 is closed except for a portion where the inlet pipe 3 is formed, and the other end surface of the outer cylinder 6 is opened. The inner cylinder 7 has an annular extending portion 34 at one end of the cylindrical portion. As shown in FIG. 3A, the outer peripheral end of the other end surface of the outer cylinder 6 abuts on the outer peripheral end of the outer extension part 34 by being inserted into the outer cylinder 6 from the cylindrical portion of the inner cylinder 7 in the axial direction. Thus, the inner cylinder 7 is formed in the outer cylinder 6. As shown in FIG. 3A, the opening direction of the inlet pipe 3 and the opening of the recessed portion 8 are opposed to each other. The opening direction of the recess 8 toward the outer peripheral end of the inner cylinder 7 is substantially downward, and the opening direction of the guide tube 38 in the circumferential direction is counterclockwise. The circumferential opening direction of the guide tube 38 may be clockwise. And the hole penetrated to an axial direction is provided in the upper part of the outward extension part 34, ie, the upper part of the outward extension part 34 is opening. The left wall surface of the opening is higher than the right wall surface. That is, the wall surface (left wall surface) of the upper opening of the extension part 34 facing the opening direction in the circumferential direction of the guide tube 38 is higher than the other wall surface (right wall surface). The surface of the extended portion 34 is spiral, and has a function of a flow path that smoothly guides air to the opening above the extended portion 34. As shown in FIG. 3 (B), the upper substantially semicircular portion in the inner cylinder 7 is provided with a recessed portion 39 that is recessed toward the inner side of the inner cylinder 7, and the lower substantially semicircular portion is formed in the inner cylinder 7. Open in. When the flow rate of air outside the inner cylinder 7 is made larger than the flow rate of air inside the inner cylinder 7 in a state where dust is not accumulated in the dust collecting basket 12, the upper portion of the extended portion 34 is higher than the opening area inside the inner cylinder 7. The opening area may be increased. The area of the recessed portion 39 may be increased as compared with the opening into the inner cylinder 7, or the area of the opening into the inner cylinder 7 may be increased as compared with the recessed portion 39. Then, the user can easily hold the dust separation part 4 or the inner cylinder 7 by putting his / her finger into the recess 39.

  When the cylindrical portion of the inner cylinder 7 is formed of a metal material having an antibacterial effect, first, a plurality of through-holes 33 having a diameter of about 0.1 mm to 0.4 mm are etched into a thin metal plate, and then both ends are formed. Join into a cylindrical shape. The through hole 33 may be punched. Examples of the metal material having an antibacterial effect include stainless steel, silver, and copper. The alloy is not limited to stainless steel, silver and copper, and may be any alloy containing silver or copper or having silver or copper surface-deposited. The thickness of the metal thin plate is 1 mm or less, and about 0.1 mm to 0.5 mm is preferable for improving workability. When the metal thin plate is thin, it is preferable to fix both ends in the axial direction of the cylindrical metal thin plate with a resin having good formability in order to improve the strength and the roundness. Specifically, a substantially circular one-end mold of the inner cylinder 7 having the recessed portion 8 and the guide tube 38 and a mold of the other end of the inner cylinder 7 having the annular outer extension 34 are formed into a molded mold. Then, a cylindrical metal thin plate is set, and then insert molding is performed by pouring resin into a mold. In the case of insert molding, the metal thin plate may not be formed into a cylindrical shape by joining both ends. Thus, only the cylindrical portion of the inner cylinder 7 in which the substantially circular one end portion of the inner cylinder 7 having the recessed portion 8 and the guide tube 38 and the other end portion of the inner cylinder 7 having the annular outer extending portion 34 are made of resin. Can be made of a metal material. Insert molding can simplify the manufacturing process.

  FIG. 4 (A) shows a perspective view of a state where the front cover of the dust container of the embodiment of the present invention is opened, and FIG. 4 (B) shows the rear filter of the dust container of the embodiment of the present invention opened. FIG. As shown in FIG. 4A, when the front lid 11 is pivoted downward with the shaft 31 as a fulcrum, the dust collecting basket 12 is also pivoted downward with the shaft 14 as a fulcrum. At this time, the dust collecting basket 12 is divided into two parts up and down with the shaft 13 as a fulcrum. The opening of the dust collection basket 12 when it jumps out of the dust storage section 5 is wider than the opening of the dust collection basket 12 stored in the dust storage section 5. As a result, the dust stuck to the inner surface of the dust collecting basket 12 can be easily removed. When the user attaches the tissue paper along the inner surface of the dust collecting basket 12, the end of the tissue paper is sandwiched between the frame of the opening of the dust collecting basket 12 and the outer peripheral end of the front lid 11. In this case, the tissue paper can be prevented from shifting or coming off. As shown in FIG. 4B, the filter 15 is also rotated downward and opened with the shaft 32 as a fulcrum. As a result, the user can easily discharge the dust accumulated outside the dust collecting basket 12 in the case 10, and can easily remove the dust attached to the side surface of the case 10 of the filter 15.

  FIG. 5A is a front view of the front cover of the dust container of the embodiment of the present invention as viewed from the outside of the dust container, and FIG. 5B is a front view of the dust container of the embodiment of the present invention. It is the front view seen from the dust accommodating part of a lid | cover. The hatched portion in the figure shows the frontmost surface, not the cross section. A shaft 31 that is rotatably supported by the case 10 is provided at the lower end of the front lid 11. The front lid has a substantially circular shape. A substantially circular portion outside the shaded portion shown in FIG. 5A can contact the outer peripheral end of the other end surface in the axial direction of the dust separation portion 4. A substantially circular portion inside the hatched portion shown in FIG. 5A can contact the outer peripheral end of the other axial end surface of the inner cylinder 7 of the dust separating portion 4. On the upper side of the front lid 11, that is, on the side opposite to the shaft 31, an opening of the outer flow path 35 is formed between a substantially circular portion outside the shaded portion and a substantially circular portion inside. The opening position on the front side (outside of the dust container 5) of the outer channel 35 may be the left and right sides or the lower side of the front lid 11, but the opening position on the back side (inside the dust container 5) of the outer channel 35 is the front cover. 11, the opening position on the front side of the outer flow path 35 is also preferably above the front lid 11 in order to reduce the pressure loss of the air by reducing the length of the outer flow path 35. . On the other hand, an opening of the inner flow path 36 is formed inside the inner cylinder 7. In the front view of FIG. 5A, the opening area of the inner flow path 36 is larger than the opening area of the outer flow path 35, but the upper semicircular portion in the inner cylinder 7 has a recess 39. Therefore, when the flow rate of air outside the inner cylinder 7 is made larger than the flow rate of air inside the inner cylinder 7, the substantial flow path area is that the opening of the inner flow path 36 is larger than the opening area of the outer flow path 35. The area is smaller. A portion where the opening of the outer flow path 35 between the substantially circular portion outside the shaded portion and the inner substantially circular portion is not formed is closed.

  A substantially circular portion outside the shaded portion shown in FIG. 5B abuts on the outer peripheral end of the axial end surface of the case 10 and a part of the outer peripheral end of the opening of the dust collecting basket 12. As shown in FIG. 5B, the opening of the outer flow path 35 is formed above the vertical center line of the front lid 11. Thereby, when the vacuum cleaner is stopped, it is possible to prevent the dust accumulated in the dust collecting basket 12 from flowing back to the outer flow path 35 and the dust separator 4. However, the opening of the outer flow path 35 may be formed in the center portion including the vertical center line of the front lid 11. Furthermore, it is preferable to form a check valve (not shown) that covers the outer flow path 35. This further prevents the dust accumulated in the dust collecting basket 12 from flowing back to the outer flow path 35 and the dust separator 4 when the vacuum cleaner is stopped. On the other hand, an opening of the inner flow path 36 is formed near the lower end of the front lid 11. However, the opening position of the inner flow path 36 may be lower than the opening position of the outer flow path 35, or may be on the left or right side or the upper side. The hatched portion on the upper side of the opening of the inner flow path 36 contacts the lower end of the outer peripheral end of the opening of the dust collecting basket 12. Then, as shown in FIG. 5B, the opening area of the outer flow path 35 is larger than the opening area of the inner flow path 36 on the back side of the front lid 11 (inside the dust container 5). Furthermore, as shown in FIGS. 5A and 5B, the opening area (FIG. 5B) of the other end (back side) of the outer flow path 35 is equal to that of one end (front side) of the outer flow path 35. It is larger than the opening area (FIG. 5A). That is, the outer flow path 35 extends from one end to the other end. On the other hand, as shown in FIGS. 5 (A) and 5 (B), the opening area (FIG. 5 (B)) of the other end (back side) of the inner flow path 36 is equal to that of one end (front side) of the inner flow path 36. It is smaller than the opening area (FIG. 5A). That is, the inner flow path 36 is narrowed from one end to the other end.

  FIG. 6 is a front view as seen from the dust separation unit side when the front cover of the dust container of the embodiment of the present invention is removed. As in FIG. 5, the hatched portion in the figure indicates the frontmost surface, not the cross section. The substantially circular shaded portion is in contact with the outer peripheral end of the front lid 11. As shown in FIG. 6, the outer peripheral end of the opening on one end surface in the axial direction of the case 10 abuts a part of the outer peripheral end of the opening of the dust collecting basket 12. As shown in FIG. 6, 80% or more of the opening on one end surface in the axial direction of the case 10 is occupied by the opening of the dust collecting basket 12. A region other than the opening of the dust collection basket 12 in the opening of the case 10 (the remaining 20% or less) faces the opening of the inner flow path 36 and communicates with the inner flow path 36.

  FIG. 7 is a schematic view of a vacuum cleaner according to an embodiment of the present invention. In addition to the vacuum cleaner main body 1, the vacuum cleaner includes a suction tool 50 having a suction port, one end communicating with the suction tool 50, a telescopic joint pipe (extension pipe) 51, and one end communicating with the other end of the joint pipe 51. An operation tube 52 having a handle 53 and an operation button / switch that are gripped by the user, and a hose 54 having one end communicating with the other end of the operation tube 52 and the other end forming the hose coupling tube 20 are provided. The hose joint pipe 20 is inserted into the main body inlet 21 of the cleaner body 1 and can be held. Further, wheels 55 are provided on both side surfaces of the cleaner body 1.

  And if the power supply of a vacuum cleaner is turned ON by operation to an operation button / switch from a user, the electric air blower 28 will act | operate and will generate | occur | produce suction | attraction force. The air sucked from the suction port of the suction tool 50 passes through the joint pipe 51, the operation pipe 52, the hose 54, and the hose joint pipe 20 in this order, and flows into the cleaner body 1.

  In the first embodiment, the electric blower 28 is vertically installed. However, the electric blower 28 can be applied to a case where the electric blower 28 is placed obliquely or horizontally. In the first embodiment, the dust collector 2 uses a centrifugal separation function, but can also be applied to a filter using a filtration method such as a paper pack.

  The present invention is applicable to a vacuum cleaner.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 2 Dust collector 3 Inlet pipe 4 Dust separation part 5 Dust accommodating part 6 Outer cylinder 7 Inner cylinder 8 Recessed part 9, 22, 25 Packing 10 Case 11 Front cover 12 Dust collection basket 13, 14, 31, 32 Shafts 15, 29 Filter 16 Handle 17 Button 18 Transmission rod 20 Hose joint pipe 21 Main body inlet 23 Caster support 24 Dust removal device 26 Auxiliary filter 27 Intake duct 27a Opening 27b Outlet 27c Mountain A
27d Duct airtight surface 28 Electric blower 28a Suction port 28b Exhaust port 28c Casing surface 28d Eyepiece part 30 Main body exhaust port 33 Through hole 34 Outward extension part 35 Outer flow path 36 Inner flow path 38 Guide pipe 39 Recessed part 40 Exhaust duct 41 Code reel 42 Code reel chamber 43 Plug 44 Outer peripheral part 45 Case 47 Code 49 Substrate 50 Suction tool 51 Joint pipe 52 Operation pipe 53 Handle 54 Hose 55 Wheel 60 Step 61 Partition plate 62 Ring rib 63 Packing presser 64 Space 101 Elastic member 101a Vibration isolator Airtight portion 101b Airtight portion 101c Fixing groove 101d Protruding portion 101e Anti-vibration projection 102 Fixed cover 102a Positioning convex 102b Airtight surface 102c Mounting hole 102d Rib 103 Airtight packing 103a Exhaust lip portion 104 Boss 105 Positioning concave 107 Screw stop 108 Positioning rib 110 Edge 110a Mountain B
111 Wall 112 Gap 113 Vibration isolator 114 Suction side space 115 Exhaust side space 116 Exhaust pressure 117 Intake pressure

Claims (8)

In an electric vacuum cleaner comprising an electric blower, a case housing the electric blower, and an airtight member disposed between a suction port of the electric blower and the case,
2. The vacuum cleaner according to claim 1, wherein the airtight member has a vibration preventing portion for suppressing vibration and an airtight portion for taking airtightness on an intake side and an exhaust side of the electric blower in different shapes. The vacuum cleaner according to claim 1, wherein
The vibration preventing part has a plurality of convex shapes. The electric vacuum cleaner according to claim 1 or 2,
The vacuum cleaner, wherein the airtight part has a thin plate shape. The vacuum cleaner according to claim 3,
The electric vacuum cleaner characterized in that the thin plate-like shape has a tip that is inclined outward by approximately 30 degrees with respect to the base. In an electric vacuum cleaner comprising an electric blower, a case for housing the electric blower, and a member disposed between a suction port of the electric blower and the case,
The member includes a first annular portion in which a plurality of protrusions are annularly arranged, and a second annular portion that is formed of an annular thin plate and has a tip that extends outward with respect to the root. And vacuum cleaner. The vacuum cleaner according to claim 5,
The first annular part and the second annular part are made of the same material,
In a state where the member is disposed between the periphery of the suction port of the electric blower and the case, the elastic deformation amount of the second annular portion is larger than the elastic deformation amount of the first annular portion. An electric vacuum cleaner. The vacuum cleaner according to claim 5,
In a state where the member is not disposed between the periphery of the suction port of the electric blower and the case, the tip of the second annular portion protrudes beyond the tip of the first annular portion. Characterized vacuum cleaner. The vacuum cleaner according to claim 5,
The member includes an annular base,
The first annular portion and the second annular portion are formed on the base,
The vacuum cleaner, wherein the first annular portion and the second annular portion are arranged in a concentric positional relationship.

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