JP2015066121A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a vacuum cleaner including a soundproof structure without the deterioration of soundproof performance due to the exhaust air of the vacuum cleaner.SOLUTION: A vacuum cleaner 1 includes a cleaner body 2 where an electric blower 8 is stored, an exhaust air passage 67 for the circulation of air moved by the electric blower 8 is partitioned, and a gap 101 for allowing the air moved by the electric blower 8 not to circulate and attenuating noise generated by the electric blower 8 is arranged separately from the air passage 67 on a side closer to an outer appearance surface than the exhaust air passage 67.

Description

  Embodiments according to the present invention relate to a vacuum cleaner.

  A conventional electric vacuum cleaner is provided in an air passage leading to an electric blower and includes a soundproof material having air permeability. The soundproofing material is provided exclusively on the downstream side of the electric blower, that is, exposed to the exhaust of the electric blower.

Japanese Patent Laid-Open No. 11-225918

  The exhaust of the electric blower is warmed by taking the heat of the electric blower. Therefore, the exhaust air warmed by the electric blower circulates through the soundproof material having air permeability. However, if the soundproofing material such as foamed urethane continues to be exposed to warm exhaust, it will gradually deteriorate and lower the soundproofing performance.

  Then, this invention proposes a vacuum cleaner provided with the soundproof structure without the deterioration of the soundproof performance by the exhaust of an electric blower.

  In order to solve the above problems, an electric vacuum cleaner according to the present invention includes an electric blower, an air blower that houses the electric blower, flows through the air that the electric blower flows, and is separate from the air flow. A vacuum cleaner main body having air gaps flowing through the electric blower that are non-circulating and have a gap that attenuates noise generated by the electric blower on the side closer to the external surface than the air passage.

The perspective view which shows the external appearance of the vacuum cleaner which concerns on embodiment of this invention. The perspective view which shows the cleaner body of the vacuum cleaner which concerns on embodiment of this invention from the diagonally left front. The perspective view which removes a dust separation dust collecting apparatus from the vacuum cleaner main body of the vacuum cleaner which concerns on embodiment of this invention, and shows from the diagonal left front. The perspective view which removes a dust separation dust collector and the exterior from the vacuum cleaner main body of the vacuum cleaner which concerns on embodiment of this invention, and shows from the diagonally left front. The perspective view which removes a dust separation dust collector, the exterior, and an inner case from the vacuum cleaner main body of the vacuum cleaner which concerns on embodiment of this invention, and shows from the diagonally left front. From the vacuum cleaner main body of the vacuum cleaner according to the embodiment of the present invention, the dust separating / collecting device, the exterior, the inner case, the cord reel, and the various members that define the air path upstream of the electric blower are removed diagonally to the left. FIG. The disassembled perspective view of the cleaner body shown in FIG. The top view which shows the cleaner body of the vacuum cleaner which concerns on embodiment of this invention. Sectional drawing which shows the cleaner body of the vacuum cleaner which concerns on embodiment of this invention. The perspective view which shows the inner case of the vacuum cleaner which concerns on embodiment of this invention, and the inner side of an exterior. The perspective sectional view showing the inner case and the exterior of the vacuum cleaner concerning the embodiment of the present invention.

  An embodiment of a vacuum cleaner according to the present invention will be described with reference to FIGS.

  FIG. 1 is a perspective view showing an external appearance of a vacuum cleaner according to an embodiment of the present invention.

  As shown in FIG. 1, the vacuum cleaner 1 according to the present embodiment is a so-called canister-type vacuum cleaner. The vacuum cleaner 1 includes a vacuum cleaner body 2 that can travel on a surface to be cleaned, and a pipe portion 3 that is detachable from the cleaner body 2. The vacuum cleaner body 2 and the pipe portion 3 are fluidly connected.

  The vacuum cleaner main body 2 includes a main body case 5, a pair of wheels 6 provided on both the left and right sides of the main body case 5, and a detachable dust separating and collecting device 7 disposed in the front half of the main body case 5. And an electric blower 8 housed in the latter half of the main body case 5, a main body control unit 9 that mainly controls the electric blower 8, and a power cord 11 that guides electric power to the electric blower 8.

  The vacuum cleaner main body 2 drives the electric blower 8 with electric power supplied via the power cord 11, and causes the negative pressure generated by the drive of the electric blower 8 to act on the pipe portion 3. The vacuum cleaner 1 sucks air containing dust (hereinafter referred to as “dust-containing air”) from the surface to be cleaned through the pipe portion 3, separates the dust from the dust-containing air, and collects the separated dust. And accumulates and exhausts the separated air.

  A main body connection port 12 is provided in the front portion of the main body case 5. The main body connection port 12 is a fluid inlet of the vacuum cleaner main body 2 and fluidly connects the pipe portion 3 and the dust separating and collecting device 7.

  The wheel 6 is a large-diameter traveling wheel and supports the cleaner body 2.

  The dust separating and collecting device 7 separates, collects and accumulates dust from the dust-containing air flowing into the cleaner body 2 by a centrifugal separation method, and sends clean air from which dust has been removed to the electric blower 8. .

  The electric blower 8 sucks air from the dust separating and collecting device 7 to generate a negative pressure (suction negative pressure).

  The main body control unit 9 includes a microprocessor (not shown) and a storage device (not shown) for storing various arithmetic programs executed by the microprocessor, parameters, and the like. The storage device stores a plurality of preset operation modes. The plurality of operation modes set in advance correspond to user operations accepted by the pipe section 3. Different input values (input values of the electric blower 8) are set in the respective operation modes. The main body control unit 9 selectively selects an arbitrary operation mode corresponding to the operation content from a plurality of operation modes set in advance according to the operation of the user accepted by the tube unit 3 from the storage unit. The electric blower 8 is controlled according to the read operation mode.

  The power cord 11 supplies power to the cleaner body 2 from a wiring plug connector (not shown, so-called outlet). A plug 14 is provided at the free end of the power cord 11.

  The pipe part 3 sucks dust-containing air from the surface to be cleaned by the negative pressure acting from the cleaner body 2 and guides it to the cleaner body 2. The pipe portion 3 is fluidly connected to the connecting pipe 19 as a joint that is detachably connected to the cleaner body 2, a dust collecting hose 21 that is fluidly connected to the connecting pipe 19, and the dust collecting hose 21. Connected hand operating tube 22, gripping part 23 protruding from hand operating tube 22, operating part 24 provided on gripping part 23, and extension tube detachably connected to hand operating tube 22 25 and a suction port body 26 detachably connected to the extension pipe 25.

  The connection pipe 19 is a joint that is detachably connected to the main body connection port 12, and is fluidly connected to the dust separating and collecting device 7 through the main body connection port 12.

  The dust collection hose 21 is a long and flexible substantially cylindrical hose. One end of the dust collection hose 21 (here, the rear end) is fluidly connected to the connection pipe 19. The dust collecting hose 21 is fluidly connected to the dust separating and collecting device 7 through the connecting pipe 19.

  The hand operation tube 22 relays the dust collection hose 21 and the extension tube 25. One end portion (here, the rear end portion) of the hand operation tube 22 is fluidly connected to the other end portion (here, the front end portion) of the dust collecting hose 21. The hand operating tube 22 is fluidly connected to the dust separating and collecting device 7 through the dust collecting hose 21 and the connecting tube 19.

  The grip portion 23 is a portion that the user grips with his / her hand to operate the vacuum cleaner 1. The grip portion 23 protrudes from the hand operation tube 22 in an appropriate shape that can be easily gripped by the user.

  The operation unit 24 includes a switch associated with each operation mode. Specifically, the operation unit 24 includes a stop switch 24 a associated with the operation stop operation of the electric blower 8, a start switch 24 b associated with the operation start operation of the electric blower 8, and power supply to the suction port body 26. And a brush switch 24c associated with each other. The stop switch 24 a and the start switch 24 b are electrically connected to the main body control unit 9. The user of the vacuum cleaner 1 can alternatively select the operation mode of the electric blower 8 by operating the operation unit 24. The start switch 24 b also functions as an operation mode selection switch during operation of the electric blower 8. In this case, every time an operation signal is received from the activation switch 24b, the main body control unit 9 switches the operation mode in the order of strong → medium → weak → strong → medium → weak →. Note that the operation unit 24 may individually include a strong operation switch (not shown), a medium operation switch (not shown), and a weak operation switch (not shown) instead of the start switch 24b.

  An extension tube 25 having a telescopic structure in which a plurality of cylindrical bodies are superposed is an elongated, substantially cylindrical tube that can be expanded and contracted. One end portion (here, the rear end portion) of the extension tube 25 is provided with a joint structure that is detachable from the other end portion (here, the front end portion) of the hand operation tube 22. The extension pipe 25 is fluidly connected to the dust separating and collecting apparatus 7 through the hand operating pipe 22, the dust collecting hose 21 and the connecting pipe 19.

  The suction port body 26 can run or slide on a surface to be cleaned such as a wooden floor or a carpet, and has a suction port 28 on the bottom surface facing the surface to be cleaned in the running state or the sliding state. The suction port body 26 includes a rotatable rotary cleaning body 29 disposed in the suction port 28 and an electric motor 31 that drives the rotary cleaning body 29. One end portion (here, the rear end portion) of the suction port body 26 is provided with a joint structure that is detachable from the other end portion (here, the front end portion) of the extension pipe 25. The suction port body 26 is fluidly connected to the dust separating and collecting device 7 through the extension pipe 25, the hand operating pipe 22, the dust collecting hose 21 and the connecting pipe 19. That is, the suction port body 26, the extension tube 25, the hand operation tube 22, the dust collection hose 21, the connection tube 19, and the dust separation and dust collection device 7 are suction air paths from the electric blower 8 to the suction port 28. The electric motor 31 alternately starts and stops operation every time it receives an operation signal from the brush switch 24c.

  The electric vacuum cleaner 1 starts the electric blower 8 when accepting a user operation on the start switch 24b. For example, when the vacuum cleaner 1 receives an operation on the start switch 24b while the electric blower 8 is stopped, the electric blower first operates the electric blower 8 in the strong operation mode, and receives an operation on the start switch 24b again. 8 is operated in the medium operation mode, and when the operation for the start switch 24b is accepted three times, the electric blower 8 is operated in the weak operation mode, and the same is repeated thereafter. The strong operation mode, the medium operation mode, and the weak operation mode are a plurality of operation modes set in advance, and the input value to the electric blower 8 is small in the order of the strong operation mode, the medium operation mode, and the weak operation mode. The started electric blower 8 exhausts air from the dust separating and collecting device 7 to make the inside negative pressure.

  The negative pressure in the dust separating and collecting device 7 acts on the suction port 28 through the main body connection port 12, the connection tube 19, the dust collection hose 21, the hand control tube 22, the extension tube 25, and the suction port body 26 in order. To do. The vacuum cleaner 1 cleans the surface to be cleaned by sucking dust on the surface to be cleaned together with air by the negative pressure applied to the suction port 28. The dust separating and collecting device 7 separates and accumulates dust from the dust-containing air sucked into the electric vacuum cleaner 1, and sends the air separated from the dust-containing air to the electric blower 8. The electric blower 8 exhausts the air sucked from the dust separating and collecting device 7 to the outside of the cleaner body 2.

  Next, the vacuum cleaner body will be described in detail.

  FIG. 2 is a perspective view showing the vacuum cleaner body of the electric vacuum cleaner according to the embodiment of the present invention from the diagonally left front.

  FIG. 3 is a perspective view of the vacuum cleaner main body according to the embodiment of the present invention, with the dust separating and collecting device removed from the vacuum cleaner main body and viewed from the left front side.

  FIG. 4: is a perspective view which removes a dust separation dust collector and an exterior from the vacuum cleaner main body of the vacuum cleaner concerning the embodiment of the present invention, and shows it from the diagonally left front.

  FIG. 5: is a perspective view which removes a dust separation dust collector, an exterior | packing, and an inner case from the vacuum cleaner main body which concerns on embodiment of this invention, and shows from the diagonal left front.

  FIG. 6 shows the dust separating / collecting device, the exterior, the inner case, the cord reel, and various members that define the air path upstream of the electric blower from the vacuum cleaner body of the vacuum cleaner according to the embodiment of the present invention. FIG.

  FIG. 7 is an exploded perspective view of the cleaner body shown in FIG. 6.

  FIG. 8 is a plan view showing a vacuum cleaner main body of the electric vacuum cleaner according to the embodiment of the present invention.

  FIG. 9 is a cross-sectional view illustrating the vacuum cleaner body of the electric vacuum cleaner according to the embodiment of the present invention, taken along line IX-IX in FIG. 8.

  As shown in FIGS. 2 to 9, the vacuum cleaner body 2 of the vacuum cleaner 1 according to the present embodiment detachably holds the dust separation dust collecting device 7 in a posture inclined slightly rearward. The vertical direction of the cleaner body 2 is the vertical direction when the cleaner body 2 is placed on a horizontal surface to be cleaned.

  Here, first, the centrifugal separation dust collecting device 7 includes a first separation chamber 41 that centrifuges coarse dust, such as fiber dust or large-sized sand particles, from dust-containing air, and a first separation chamber 41. From the dust collection chamber 42 for accumulating the coarse dust separated in Step 1, the guide tube 43 for taking out the air separated from the first separation chamber 41, and the air separated from the coarse dust connected to the guide tube 43. A second separation chamber 45 for centrifuging fine powdery fine dust from the air, and an exhaust pipe 46 for taking out the air separated from the fine separation from the second separation chamber 45 and exhausting it to the main body case 5. ing.

  On the other hand, the main body case 5 fluidly connects between the first relay pipe 51 that fluidly connects between the connecting pipe 19 and the dust separating dust collecting apparatus 7, and between the dust separating dust collecting apparatus 7 and the electric blower 8. A second relay pipe 52 to be connected, and a filtration filter 53 provided between the second relay pipe 52 and the electric blower 8 are provided. An outlet 55 of the first relay pipe 51 and an inlet 56 of the second relay pipe 52 are disposed on the front wall 5 a of the main body case 5.

  The first relay pipe 51 of the main body case 5 guides the dust-containing air flowing into the connection pipe 19 to the dust separation and dust collection device 7. The first separation chamber 41 of the dust separation and dust collecting device 7 separates coarse dust from dust-containing air. The dust collection chamber 42 accumulates the separated coarse dust, and the guide tube 43 guides the separated air to the second separation chamber 45. The second separation chamber 45 separates fine dust from the air and discards it in a dust cup 57 that also serves as the outer shell of the first separation chamber 41 and the dust collection chamber 42. The exhaust pipe 46 sends clean air from which fine dust is separated to the main body case 5. The second relay pipe 52 of the main body case 5 sends clean air to the filtration filter 53, and the filtration filter 53 filters and captures fine dust mixed in the clean air, and sends extremely clean air to the electric blower 8. send.

  An electric blower case 58 that accommodates the electric blower 8 is provided in the main body case 5. The electric blower case 58 is biased to the right side of the main body case 5. A cord reel 59 around which the power cord 11 is wound is provided on the left side of the electric blower case 58. The main body case 5 includes a lower case 61 as a chassis, an inner case 62 that covers the lower case 61 and accommodates the first relay pipe 51, the second relay pipe 52, the electric blower case 58, and the cord reel 59; A rear case 63 that covers the rear end of the cleaner body 2 in cooperation with the case 62 and an exterior 65 that covers the inner case 62 and occupies most of the design surface of the cleaner body 2 are provided.

  The inner case 62 accommodates the electric blower 8 together with the electric blower case 58 and defines an exhaust air passage 67 through which the exhaust from the electric blower 8 circulates. Further, most of the inner case 62 is covered with the exterior 65, while the rear end portion is exposed at the rear end portion of the cleaner body 2.

  The electric blower 8 accommodated in the cleaner body 2 is provided on the rotary shaft 71 extending in the substantially vertical direction of the cleaner body 2, the centrifugal fan portion 72 provided on the rotary shaft 71, and the rotary shaft 71. A motor unit 73 for driving the centrifugal fan unit 72 and a cylindrical centrifugal fan cover 76 having an intake port 75 communicating with the centrifugal fan unit 72 on an extension line of the rotating shaft 71 are provided.

  Moreover, the cleaner body 2 is in contact with the annular elastic member 81 wound around the centrifugal fan cover 76 of the electric blower 8 and a part of the periphery of the elastic member 81, and the remaining portion is avoided to electrically drive the cleaner body 2. And a holding frame body 82 that elastically supports the blower 8.

  The centrifugal fan cover 76 has a bottom wall 76a that closes one end, and has a cup shape that opens the other end. An intake port 75 is opened at the center of the bottom wall 76a. The open end side is connected to the motor unit 73 and closed.

  On the other hand, an exhaust port 77 is provided at the lower end of the motor unit 73, and the exhaust port 77 is an outlet for air sucked from the intake port 75 by the electric blower 8.

  The electric blower case 58 supports the centrifugal fan cover 76 of the electric blower 8 from the lower side and accommodates the motor unit 73. The electric blower case lower half 83, the centrifugal fan part 72 of the electric blower 8, and the centrifugal fan cover 76 are large. An electric blower case upper half body 85 that accommodates the portion and covers the lower half body 83 of the electric blower case. The upper half 85 of the electric blower case is integrally provided with a filter holding frame 86 that holds the filtration filter 53 in a detachable manner. On the front surface of the electric blower case lower half 83, the main body control unit 9 is held and disposed in the exhaust air passage 67.

  The elastic member 81 is, for example, a molded product of foamed rubber, and is wound around the open end side of the centrifugal fan cover 76. The elastic member 81 follows the circular side wall 76b of the centrifugal fan cover 76, follows the first annular portion 87 that is thin in the radial direction, and the circular open end of the centrifugal fan cover 76, and forms an inner peripheral surface of the first annular portion 87. And a second annular portion 88 that is thin in the center line direction. The first annular portion 87 elastically supports the radial direction of the centrifugal fan cover 76. The second annular portion 88 elastically supports the vertical direction of the centrifugal fan cover 76.

  The holding frame body 82 is integrated with the electric blower case 58 and disposed at the open end of the electric blower case lower half 83. The holding frame body 82 has a plurality of weight reduction ports 89 that are opened in the remaining portion that avoids the elastic member 81. The weight reducing port 89 contributes to reducing the weight of the electric blower case 58 and thus the cleaner body 2 and at the same time reduces the contact area between the elastic member 81 and the holding frame 82. The plurality of weight reduction ports 89 may be arranged in an orderly manner or may be sparsely distributed at unequal intervals. The reduction in the contact area between the elastic member 81 and the holding frame 82 increases the surface pressure when the elastic member 81 is compressed by the load caused by the vibration of the electric blower 8, and consequently causes the elastic member 81 to be partially deformed greatly. It leads to connection, ie, supporting the electric blower 8 softly.

  In addition, the holding frame body 82 includes an annular frame portion 91 that divides the weight reduction port 89 into a window shape and is connected in an annular shape. The annular frame portion 91 is disposed on the side closer to the intake port 75 of the electric blower 8 than the weight reduction port 89, that is, on the upper side of the weight reduction port 89 in the present embodiment. The annular frame part 91 holds the opening end of the holding frame body 82 in an annular shape so that the electric blower 8 can reliably hold the vibration mode in which the centrifugal fan part 72 is swung around the rotating shaft 71 like a swinging motion. Plan.

  The elastic member 81 closes the weight reduction port 89 to prevent air flow, while the vibration of the electric blower 8 is transmitted to the main body case 5 at a portion sandwiched between the holding frame body 82 and the electric blower 8. Is preventing.

  By the way, the electric blower 8 has the intake port 75 opened upward of the cleaner body 2. When the electric blower 8 is driven, the intake port 75 is depressurized to a negative pressure. The suction negative pressure of the electric blower 8 pulls up the electric blower 8 itself, and brings the electric blower 8 closer to the filter 53 disposed above the electric blower 8. The propulsive force by this suction negative pressure suspends the electric blower 8 from above. In the suspended state of the electric blower 8, the elastic member 81 and the holding frame 82 hold the radial and circumferential movements of the electric blower 8, and follow the displacement caused by the vibration acting in the radial direction in particular. The electric blower 8 is held. That is, when the electric blower 8 is driven, the holding frame body 82 is in contact with a part of the periphery of the elastic member 81 and avoids the remaining portion so that the vacuum cleaner body elastically supports the radial direction of the electric blower 8. .

  On the other hand, when the electric blower 8 is not driven, the electric blower 8 that has lost its propulsive force is lowered below the cleaner body 2 due to gravity, so that the elastic member 81 and the holding frame 82 are located at the lower edge of the centrifugal fan cover 76. The electric blower 8 is also held from below.

  The electric blower case 58 has a plurality of exhaust ports 98 and 99 on the left side surface 58 a facing the cord reel 59. The air flowing out from the exhaust ports 98 and 99 also functions as cooling air for cooling the power cord 11 wound around the cord reel 59 and blows out to the inside of the inner case 62 and the rear case 63. The air blown out to the inside of the inner case 62 and the rear case 63 is exhausted from the main body exhaust port 92 opened at the rear end portion of the inner case 62 to the outside of the cleaner body 2. That is, the inside of the inner case 62 and the rear case 63 is an exhaust air passage 67 through which the exhaust from the electric blower 8 flows.

  The exhaust port 98 is an opening group having a plurality of openings, and is disposed on the left side surface 83 a of the electric blower case lower half 83. The exhaust port 99 is also a group of openings having a plurality of openings, and is disposed on the left side surface 85 a of the electric blower case upper half 85.

  Next, the inner case 62 and the exterior 65 of the main body case 5 will be described in detail.

  FIG. 10 is a perspective view showing the inside of the inner case and the exterior of the electric vacuum cleaner according to the embodiment of the present invention.

  FIG. 11 is a perspective cross-sectional view showing an inner case and an exterior of the vacuum cleaner according to the embodiment of the present invention, taken along the line XI-XI shown in FIG.

  In addition, FIG. 10 has shown the state which removed the exterior | packing 65 which covers the right side of the cleaner body 2. FIG.

  In addition to FIGS. 2 to 9, as shown in FIGS. 10 and 11, the main body case 5 of the vacuum cleaner 1 according to the present embodiment includes an exhaust air passage 67 through which air that the electric blower 8 flows flows. Separately from the exhaust air passage 67, the air that the electric blower 8 flows is non-circulating and has a gap 101 that attenuates the noise generated by the electric blower 8 on the side closer to the external surface than the exhaust air passage 67. ing.

  Specifically, the inner case 62 accommodates the electric blower 8 together with the electric blower case 58 inside, and defines an exhaust air passage 67 through which air that the electric blower 8 flows flows. On the outside of the inner case 62, a plurality of ribs 102 that support the inside of the exterior 65 are provided at substantially equal intervals. The plurality of ribs 102 divides the gap 101 into a plurality of small spaces 103.

  The exterior 65 covers the inner case 62 with a gap 101 therebetween, and adjusts the appearance of the cleaner body 2. The inner case 62 has a specific gravity smaller than that of the outer case 65. For example, the inner case 62 is a molded product of polypropylene, and the outer case 65 is a molded product of ABS resin.

  The gap 101 is a space that is blocked from the exhaust air passage 67 in the inner case 62, and does not cause a positive air flow with the exhaust air passage 67 in the inner case 62. In other words, the gap 101 does not generate noise such as wind noise due to the air flow, but blocks the wind noise due to the air flow generated in the inner case 62 and the driving sound of the electric blower 8.

  The gap 101 is provided on both the left and right sides of the cleaner body 2. Thereby, the main body case 5 prevents the drive sound of the electric blower 8 and the noise caused by the air blown to the cord reel 59 from leaking to the left and right sides of the cleaner body 2.

  The vacuum cleaner 1 according to the present embodiment defines an exhaust air passage 67 through which air that the electric blower 8 flows flows, and air that the electric blower 8 flows separately from the exhaust air passage 67 is non-circulating. By providing the gap 101 for attenuating the noise generated by the electric blower 8, a soundproof effect without deterioration due to exhaust of the electric blower 8 is obtained without providing a breathable soundproof material in the exhaust air passage 67.

  In addition, the vacuum cleaner 1 according to the present embodiment has the gap 101 between the inner case 62 and the outer casing 65, so that the electric blower 8 can be driven while the electric blower 8 is housed in the inner case 62. The noise due to the exhaust gas flowing out from the electric blower 8 can be reliably prevented by the gap 101 and the exterior 65 outside the inner case 62.

  Furthermore, the vacuum cleaner 1 according to the present embodiment uses a material having a large specific gravity for the inner case 62 and a material having a light specific gravity for the exterior 65, so that the strength of the main body case 5 is increased to a necessary level by the inner case 62. Thus, the exterior 65 is lightened, and thus the weight of the vacuum cleaner body 2 is reduced, and a higher soundproofing effect can be obtained than simply increasing the wall thickness of the body case 5 with the hollow soundproofing structure by the gap 101. .

  Therefore, according to the vacuum cleaner 1 which concerns on this embodiment, the soundproof structure without the deterioration of the soundproof performance by the exhaust of the electric blower 8 can be provided.

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

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 2 Vacuum cleaner main body 3 Pipe part 5 Main body case 5a Front wall 6 Wheel 7 Dust separation dust collector 8 Electric blower 9 Main body control part 11 Power cord 12 Main body connection port 14 Plug 19 Connection pipe 21 Dust collection hose 22 Hand control pipe 23 Grip part 24 Operation part 24a Stop switch 24b Start switch 24c Brush switch 25 Extension pipe 26 Suction port body 28 Suction port 29 Rotating cleaning body 31 Electric motor 41 First separation chamber 42 Dust collection chamber 43 Guide tube 45 Second Separation chamber 46 Exhaust pipe 51 First relay pipe 52 Second relay pipe 53 Filtration filter 55 Outlet 56 Inlet 57 Dust cup 58 Electric blower case 58a Left side 59 Cord reel 61 Lower case 62 Inner case 63 Rear case 65 Exterior 67 Exhaust air passage 71 Rotating shaft 72 Centrifugal fan part 73 Motor part 75 Air inlet 76 Centrifugal fan cover 76a Bottom wall 76b Wall 77 Exhaust port 81 Elastic member 82 Holding frame 83 Electric blower case lower half 83a Left side 85 Electric blower case upper half 85a Left side 86 Filter holding frame 87 First annular portion 88 Second annular portion 89 Weight reduction port 91 Annular frame 92 Main body exhaust port 98, 99 Exhaust port 101 Clearance 102 Rib 103 Small space

Claims (3)

An electric blower,
The electric blower is housed, the air passage through which the air blown by the electric blower circulates is partitioned, and the air blown by the electric blower separately from the air passage is non-flowing and noise generated by the electric blower is generated. A vacuum cleaner body comprising: a vacuum cleaner body having a gap to be attenuated on a side closer to the appearance surface than the air passage. The vacuum cleaner body is
An inner case that houses the electric blower and divides the air passage inside;
The vacuum cleaner according to claim 1, further comprising: an exterior covering the inner case with the gap and bearing the appearance of the vacuum cleaner body. The vacuum cleaner according to claim 2, wherein the inner case has a specific gravity smaller than that of the exterior.

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