JP2018064849A - Motor module and cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique capable of reducing noise in a motor module having a motor and a fan.SOLUTION: A motor module includes a housing 20 having a cylindrical main body part 21; a suction port 211; an exhaust port 212; a flow passage 40 connecting the suction port to the exhaust port; and partition parts 61-64 in the flow passage. The flow passage includes: a fan storage part 41; a first noise eliminating chamber 422 communicating with the fan storage part via a first communication path 421; and a second noise eliminating chamber 434 communicating with the first noise eliminating chamber via a second communication path 423. The second noise eliminating chamber communicates with the exhaust port. A flow passage cross sectional area of the first noise eliminating chamber is larger than a flow passage cross sectional area of the first communication path. A flow passage cross sectional area of the second noise eliminating chamber is larger than a flow passage cross sectional area of the second communication path. Thus, two expansion type noise eliminators constituted by the first communication path, the first noise eliminating chamber, and the second communication path, the second noise eliminating chamber are arranged between the fan and the exhaust port, so as to be able to efficiently reduce noise generated in the fan.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a motor module and a vacuum cleaner having the motor module.

Conventionally, a motor and a fan are mounted on a device such as a vacuum cleaner that requires a suction force. In recent years, in addition to the conventional canister type vacuum cleaners, small vacuum cleaners called handy type, upright type or stick type are increasing. A conventional handy type vacuum cleaner having a motor and a fan is described in, for example, JP-A-2006-67664.
JP, 2006-67664, A

  In recent years, there has been a demand for noise reduction of vacuum cleaners due to an increase in apartment houses. Moreover, a small vacuum cleaner can be used in various places and scenes. For this reason, a small vacuum cleaner is required to be quieter than a large vacuum cleaner. That is, it is required to reduce noise in a motor module having a motor and a fan.

  An object of the present invention is to provide a technology capable of reducing noise in a motor module having a motor and a fan.

  An exemplary first invention of the present application includes a motor having a rotating portion that rotates about a rotating shaft, a fan that is arranged on one side in the axial direction of the motor and that rotates together with the rotating portion, the motor and the fan. A casing that is housed inside, the casing having a cylindrical main body extending in the axial direction, an air inlet disposed on one axial side of the fan, and the other axial side of the fan And an exhaust port disposed on the outer side in the radial direction of the motor, a flow path that is a space connecting the intake port and the exhaust port between the main body portion and the motor, and is disposed inside the flow path. A partition that partitions the flow path, wherein the flow path is configured to receive the fan and directly communicate with the intake port, through the fan storage section and the first communication path. A first silencing chamber communicating with the first silencing chamber; A second silencing chamber that communicates with the exhaust port and communicates directly or indirectly with the exhaust port, and the flow path cross-sectional area of the first silencing chamber It is a motor module which is larger than an area and whose flow-path cross-sectional area of a said 2nd silencer chamber is larger than the flow-path cross-sectional area of a said 2nd communicating path.

  According to the exemplary first invention of the present application, the first communication passage and the first silencing chamber constitute an expandable silencer. Further, the second communication path and the second silencing chamber constitute an expandable silencer. By disposing two expansion silencers between the fan and the exhaust port, noise generated in the fan can be efficiently reduced.

FIG. 1 is a side view of the vacuum cleaner according to the first embodiment. FIG. 2 is a cross-sectional view of the motor module according to the first embodiment. FIG. 3 is an AA cross-sectional view of the motor module according to the first embodiment. FIG. 4 is a perspective view of the first housing of the motor module according to the first embodiment. FIG. 5 is a cross-sectional view of a motor module according to a modification. FIG. 6 is a cross-sectional view of a motor module according to a modification. FIG. 7 is a cross-sectional view of a motor module according to a modification. FIG. 8 is a cross-sectional view of a motor module according to a modification.

  Below, the example of the vacuum cleaner which has a motor module is disclosed. In the present disclosure, the direction parallel to the rotation axis of the motor is the “axial direction”, the direction orthogonal to the rotation axis of the motor is the “radial direction”, and the direction along the circumference around the rotation axis of the motor is the “circumferential direction”. Direction ". Further, in the present disclosure, the shape and positional relationship of each part will be described with the handle part side as the upper side with respect to the rechargeable battery. However, the definition of the vertical direction is not intended to limit the orientation of the motor module during manufacture and use.

<1. First Embodiment>
<1-1. Configuration of vacuum cleaner>
FIG. 1 is a side view of the vacuum cleaner 1 according to the first embodiment. The vacuum cleaner 1 includes a motor module 10, a dust separator 11, and a nozzle 12. The vacuum cleaner 1 is a so-called handy type vacuum cleaner.

  FIG. 2 is a cross-sectional view of the motor module 10. As shown in FIG. 2, the motor module 10 includes a housing 20, a motor 31, a fan 32, and a rechargeable battery 33.

  The housing 20 accommodates the motor 31, the fan 32, and the rechargeable battery 33 therein. The housing 20 is disposed on one side in the axial direction of the fan 32, and the air inlet 211 that communicates the dust separation unit 11 and the space inside the housing 20 in which the fan 32 is accommodated, and the side surface of the housing 20. And an exhaust port 212 provided. Moreover, the housing | casing 20 has the flow path 40 which is the space which connects the inlet port 211 and the exhaust port 212 in the inside. A detailed configuration of the housing 20 will be described later.

  The motor 31 is a brushless motor. The motor 31 has a rotating part that rotates about the rotating shaft 9. The fan 32 is disposed on one side of the motor 31 in the axial direction. The fan 32 rotates together with the rotating part of the motor 31. The fan 32 is a so-called centrifugal fan that generates an airflow toward the radially outer side by rotation. As a result, the fan 32 generates an air flow from the intake port 211 toward the exhaust port 212 in the flow path 40 of the housing 20. The rechargeable battery 33 supplies driving power to the motor 31.

  The dust separation unit 11 is disposed on one side of the motor module 10 in the axial direction. The nozzle 12 is disposed on one side in the axial direction of the dust separation unit 11. The dust separation unit 11 separates dust and dust contained in the airflow sucked from the nozzle 12. The dust separation unit 11 may separate dust and dirt with a paper pack, or may separate dust and dirt with a cyclone separator.

  When the cleaner 1 is driven, the motor 31 is driven, and an air flow is generated from the nozzle 12 toward the exhaust port 212 through the inside of the dust separation unit 11, the intake port 211, and the motor module 10. Thereby, dust and dust are sucked from the nozzle 12 together with the air flow. Dust and dust are removed from the airflow flowing in from the nozzle in the dust separator 11. The airflow from which dust and dust have been removed is discharged from the exhaust port 212 through the motor module 10.

<1-2. Case Configuration>
Next, a specific configuration of the housing 20 will be described with reference to FIGS. FIG. 3 is a cross-sectional view of the motor module 10 taken along the line AA. FIG. 4 is a perspective view of the first housing 71 described later.

  The housing 20 includes a main body portion 21, a handle portion 22, and a rechargeable battery housing portion 23.

  The main body 21 is a cylindrical portion extending in the axial direction. An intake port 211 penetrating in the axial direction is provided on one side of the main body 21 in the axial direction. The intake port 211 is disposed on one side of the fan 32 in the axial direction. Further, an exhaust port 212 that is a through hole is provided on a side surface of the main body portion 21. The exhaust port 212 is disposed on the other axial side of the fan 32 and on the radially outer side of the motor 31.

  The handle portion 22 and the rechargeable battery housing portion 23 are disposed on the other axial side of the exhaust port 212. The handle portion 22 is disposed above the rechargeable battery housing portion 23. Here, the handle portion 22 includes a handle hole 221 that penetrates in the left-right direction perpendicular to the axial direction and the up-down direction, and a grip portion 222 that extends in the axial direction above the handle hole 221. A rechargeable battery 33 is accommodated in the rechargeable battery accommodating portion 23.

  As shown in FIGS. 2 and 4, the housing 20 has an upper side wall part 51, a lower side wall part 52, and a central wall part 53 that partition the internal space.

  The upper side wall part 51, the lower side wall part 52, and the central wall part 53 partition the space inside the housing 20 into a flow path 40 and a part other than the flow path 40. In the present embodiment, the flow path 40 includes a fan accommodating portion 41 in which the fan 32 is accommodated, and an upper flow path 42 and a lower flow path 43 that extend from the fan accommodating portion 41 to the other side in the axial direction. That is, the flow path 40 of this embodiment branches into the upper flow path 42 and the lower flow path 43 on the downstream side of the fan 32.

  The upper flow path 42 is disposed above the motor 31. The lower flow path 43 is disposed below the motor 31. The upper side wall 51 partitions the upper flow path 42 and a portion other than the flow path 40 above the motor 31. The lower wall portion 52 partitions the lower flow path 43 and a portion other than the flow path 40 below the motor 31. Further, the central wall portion 53 connects the end portion on the one side in the axial direction of the upper side wall portion 51 and the end portion on the one side in the axial direction of the lower wall portion 52 in the vertical direction. Thereby, the fan accommodating part 41 and the space in which the motor 31 is accommodated are partitioned.

  The upper side wall portion 51 has an upper motor covering portion 511 and an upper partition wall portion 512. The lower side wall portion 52 includes a lower motor covering portion 521 and a lower partition wall portion 522. The upper motor cover portion 511 and the lower motor cover portion 521 each extend in a plate shape in the axial direction and in the left-right direction. The upper motor cover 511 is disposed between the motor 31 and the upper flow path 42. The lower motor covering portion 521 is disposed between the motor 31 and the lower flow path 43.

  For this reason, the upper flow path 42 is surrounded by the upper motor cover portion 511 and the main body portion 21 at a position overlapping the upper motor cover portion 511 in the radial direction. Further, the lower flow path 43 is surrounded by the lower motor covering portion 521 and the main body portion 21 at a position overlapping the lower motor covering portion 521 in the radial direction.

  As described above, by arranging the motor covering portions 511 and 521 between the motor 31 and the flow paths 42 and 43, the shapes of the flow paths 42 and 43 can be defined regardless of the shape of the motor 31. Thereby, even if it replaces | exchanges the motor 31 for the thing of a different shape, the flow path resistance in each flow path 42 and 43 and the muffling effect mentioned later can be kept constant.

  The upper partition wall portion 512 and the lower partition wall portion 522 extend in a plate shape in the vertical direction and the horizontal direction, respectively. The upper partition wall portion 512 extends from the other axial end of the upper motor covering portion 511 to the inner wall of the main body portion 21. As a result, the upper partition wall 512 divides the upper channel 42 and the non-channel space located on the other axial side of the upper channel 42 on the other axial side of the upper channel 42. That is, the upper partition portion 512 partitions the second silencing chamber 424 described later from the other axial side of the exhaust port 212 and a non-flow path space located on the other axial side of the second silencing chamber 424.

  The lower partition 522 extends from the other axial end of the lower motor cover 521 to the inner wall of the main body 21. Accordingly, the lower partition wall portion 522 partitions the lower flow path 43 and a non-flow path space located on the other axial side of the lower flow path 43 on the other axial direction side of the lower flow path 43. That is, the lower partition 522 partitions the second silencing chamber 434, which will be described later, on the other axial side of the exhaust port 212 and a non-flow path space located on the other axial side of the second silencing chamber 434.

  Thus, the upper side wall 51 and the lower side wall 52 partition the space in the housing 20 into the flow paths 42 and 43 and the space other than the flow path 40. Thereby, the shape of each flow path 42 and 43 can be prescribed | regulated, without receiving the influence of spaces other than the flow path 40. FIG. Therefore, for example, it is possible to suppress the generation of noise due to the airflow hitting parts such as the handle portion 22, the rechargeable battery housing portion 23, and the rechargeable battery 33. Moreover, regardless of the shape of the handle part 22, the rechargeable battery housing part 23, and the rechargeable battery 33, the flow path resistance in each of the flow paths 42 and 43 and the silencing effect described later can be kept constant.

  The housing 20 includes plate-shaped partition portions 61 to 64 that are disposed inside the flow path 40 and partition the flow path 40. Specifically, the four partition parts 61 to 64 include an upper first partition part 61 that partitions the fan accommodating part 41 and the upper flow path 42, an upper second partition part 62 that partitions the upper flow path 42, and It has a lower first partition part 63 that partitions the fan accommodating part 41 and the lower flow path 43, and a lower second partition part 64 that partitions the inside of the lower flow path 43.

  The upper first partition part 61 includes a first plate part 611 and a first bent part 612. The first plate portion 611 extends substantially perpendicular to the axial direction on one axial side of the motor 31 and the other axial side of the fan 32. The first bent portion 612 extends from the first plate portion 611 to the other side in the axial direction. The upper second partition part 62 includes a second plate part 621 and a second bent part 622. The second plate portion 621 extends substantially perpendicular to the axial direction on the other side in the axial direction of the upper first partition portion 61 and on one side in the axial direction of the upper partition wall portion 512. The second bent portion 622 extends from the second plate portion 621 to the other side in the axial direction.

  Accordingly, the upper flow path 42 includes a first communication path 421, a first silencing chamber 422, a second communication path 423, and a second silencing chamber 423.

  The first communication path 421 is a space that communicates in the axial direction between the upper first partition 61 and the upper inner wall of the main body 21. Specifically, the first communication passage 421 communicates the fan accommodating portion 41 and the first silencing chamber 422 between the first bent portion 612 and the upper inner wall of the main body portion 21. The first silencing chamber 422 includes the upper first partition 61 and the first communication passage 421 in the other axial direction, the upper side of the upper motor cover 511, the radially inner side of the inner wall of the main body 21, and the upper second partition. 62 and a space surrounded on one side in the axial direction of the second communication passage 423.

  The second communication path 423 is a space that communicates in the axial direction between the upper second partition 62 and the upper motor cover 511. Specifically, the second communication passage 423 communicates the first silencing chamber 422 and the second silencing chamber 424 between the second bent portion 622 and the upper motor covering portion 511. The second silencing chamber 424 includes the other side in the axial direction of the upper second partition 62 and the second communication passage 423, the upper side of the upper motor cover 511, the radial inner side of the inner wall of the main body 21, and the upper partition wall 512. It is a space surrounded on one side in the axial direction. The main body portion 21 constituting the second silencing chamber 424 is provided with three exhaust ports 212 that are through-holes on the left and right. That is, the exhaust port 212 communicates directly with the second silencing chamber 424. The exhaust port 212 may indirectly communicate with the second silencing chamber 424.

  The lower flow path 43 has the same configuration as that obtained by inverting the upper flow path 42 upside down. For this reason, the lower first partition part 63 and the lower second partition part 64 have shapes in which the upper first partition part 61 and the upper second partition part 62 are turned upside down. As a result, the lower flow path 43 includes the first communication path 431, the first silencing chamber 432, the second communication path 433, and the second silencing chamber 434, similar to the upper flow path 42. The first communication path 431, the first silencing chamber 432, the second communication path 433, and the second silencing chamber 434 of the lower flow path 43 are respectively the first communication path 421, the first silencing chamber 422 of the upper flow path 42, The configuration is similar to that of the second communication passage 423 and the second silencing chamber 424.

  The upper flow path 42 and the lower flow path 43 have different vertical lengths. The vertical length of each part of the upper flow path 42 is longer than the vertical length of each part of the lower flow path 43. For this reason, the length of the upper side second partition 62 in the vertical direction is longer than the length of the lower second partition 64 in the vertical direction. The channel cross-sectional area may be different for each of the branched channels 42 and 43. Of the configuration of the lower flow path 43, the description of the same structure as the upper flow path 42 is omitted.

  When the motor 31 is driven to rotate the fan 32, the fan 32 generates an air flow from above the fan 32 toward the radially outer side of the fan 32. As a result, an air flow is generated inside the fan accommodating portion 41 from the intake port 211 toward the upper flow path 42 and the lower flow path 43 via the first communication paths 421 and 431. The airflows are discharged from the exhaust port 212 to the outside of the motor module 10 through the first silencing chambers 422 and 432, the second communication passages 423 and 433, and the second silencing chambers 424 and 434, respectively.

  The channel cross-sectional area of the first silencing chamber 422 is larger than the channel cross-sectional area of the first communication passage 421. Accordingly, the first communication path 421 and the first silencing chamber 422 constitute the first expansion silencer 401. Further, the channel cross-sectional area of the second silencing chamber 424 is larger than the channel cross-sectional area of the second communication passage 423. As a result, the second communication passage 423 and the second silencing chamber 424 constitute the second expansion silencer 402. As described above, in the upper flow path 42, the two expansion silencers 401 and 402 are disposed between the fan 32 and the exhaust port 212, so that noise generated in the fan 32 can be efficiently reduced.

  In the present embodiment, the upper first partition 61 has the first bent portion 612, whereby the axial length of the first communication passage 421 can be increased. By securing the duct length of the first communication path 421, the silencing effect of the first expansion silencer 401 configured by the first communication path 421 and the first silencing chamber 422 can be improved. Moreover, the length of the 1st communicating path 421 can be adjusted by adjusting the length of the 1st bending part 612 suitably. Therefore, the silencing effect of the first expansion silencer 401 can be finely adjusted, and the silencing performance can be further improved.

  In addition, since a part of the first communication path 421 is disposed inside the first silencer chamber 422, the first expansion silencer 401 becomes a silencer with an inner duct. Specifically, the space below the first bent portion 612 and above the upper motor covering portion 511 serves as an inner duct. For this reason, the said space functions as a side branch type silencer (namely, interference type / resonance type silencer). Therefore, the silencing effect of the first expansion silencer 401 can be finely adjusted, and the silencing performance can be further improved.

  On the other hand, when the upper second partition 62 has the second bent portion 622, the axial length of the second communication passage 423 can be increased. By securing the pipe length of the second communication passage 423, the silencing effect of the second expansion silencer 402 configured by the second communication passage 423 and the second silencing chamber 424 can be improved. Moreover, the length of the 2nd communicating path 423 can be adjusted by adjusting the length of the 2nd bending part 622 suitably. Therefore, the silencing effect of the second expansion silencer 402 can be finely adjusted, and the silencing performance can be further improved.

  In addition, by arranging a part of the second communication passage 423 inside the second silencing chamber 424, the second expansion silencer 402 becomes a silencer with an inner duct. Specifically, the space above the second bent portion 622 and below the inner wall at the top of the main body portion 21 serves as an inner duct. For this reason, the said space functions as a side branch type silencer. Therefore, the silencing effect of the second expansion silencer 402 can be finely adjusted, and the silencing performance can be further improved.

  Similarly to the upper flow path 42, the lower flow path 43 includes a first communication path 431 and a first silencing chamber 432, and a second communication path 433 and a second silencing chamber 434, respectively. Configure. As described above, also in the lower flow path 43, noises generated in the fan 32 can be efficiently reduced by arranging the two expansion silencers between the fan 32 and the lower exhaust port 212.

  In the present embodiment, the first communication path 421 is disposed along the inner wall at the top of the main body 21. As a result, the airflow generated in the fan housing portion 41 by the fan 32 toward the outside in the radial direction easily enters the first communication path 421. Further, the second communication path 423 is disposed along the motor 31. Thereby, the 1st communicating path 421 and the 2nd communicating path 423 are arranged in a different position seeing in the axial direction. Thus, the silencing effect of the first expansion silencer 401 configured by the first communication path 421 and the first silencing chamber 422 is obtained by shifting the axial positions of the first communication path 421 and the second communication path 423. Can be improved. That is, the motor module 10 as a whole is designed with an emphasis on the silencing effect.

  As shown in FIG. 3, in the present embodiment, the casing 20 includes a first casing 71 that is integrally formed and a second casing 72 that is integrally formed. The first housing 71 and the second housing 72 have contact surfaces 710 and 720 that contact each other on a plane 90 that passes through the rotation shaft 9. The housing 20 is configured substantially symmetrically with respect to the plane 90. For this reason, the handle portion 22 is also substantially symmetrical with respect to the plane 90.

  As described above, by configuring the housing 20 with two halved members, the assembly efficiency of each component can be improved in the manufacturing process of the motor module 10. Further, in such a half-divided first housing 71 and second housing 72, the partition portions 61 to 64 are arranged perpendicular to the plane 90. Thereby, when forming the 1st housing | casing 71 and the 2nd housing | casing 72 by injection molding, the number of parts of a metal mold | die can be decreased. Therefore, the manufacturing cost can be reduced.

  In the present embodiment, the upper first partition 61 and the lower first partition 63 are configured by members formed separately from the first housing 71 and the second housing 72. The upper first partition 61 and the lower first partition 63 are assembled by being inserted into the central wall 53 of the first housing 71 and the second housing 72 when the motor module 10 is assembled.

  The first housing 71 has a first protrusion 711 that protrudes from the flat surface 90 toward the second housing 72. The second housing 72 has a first recess 721 that is recessed from the plane 90. The first convex portion 711 is fitted into the first concave portion 721. Thereby, the 1st housing | casing 71 and the 2nd housing | casing 72 are fixed stably. The first convex portion 711 and the first concave portion 721 are disposed near the outer surface of the housing 20 and around the handle hole 221, respectively.

  As shown in FIG. 4, the first housing 71 has a second recess 712 that is recessed from the plane 90. The second housing 72 has a second protrusion (not shown) that protrudes from the flat surface 90 toward the first housing 71. The second convex portion is fitted into the second concave portion 712. Thereby, the 1st housing | casing 71 and the 2nd housing | casing 72 are fixed more stably.

<2. Modification>
FIG. 5 is a cross-sectional view of a motor module 10A according to a modification. In the motor module 10A in the example of FIG. 5, the number of exhaust ports 212A provided in the upper flow path 42A is different from the number of exhaust ports 212A provided in the lower flow path 43A. Thus, when the flow path 40A branches on the downstream side of the fan 32A, the number of the exhaust ports 212A may be different for each of the branched flow paths 42A and 43A.

  FIG. 6 is a cross-sectional view of a motor module 10B according to another modification. In the motor module 10B in the example of FIG. 6, the second plate part 621B of the upper second partition part 62B is disposed obliquely with respect to the axial direction. Similarly to the upper second partition portion 62B, the second plate portion 641B of the lower second partition portion 64B is disposed obliquely with respect to the axial direction.

  As shown in FIG. 6, the angle and length of each partition may be changed freely. Thereby, the silencing effect of the 1st expansion type silencer and the 2nd expansion type silencer provided in each channel can be adjusted, and the silencing performance can be improved more.

  FIG. 7 is a cross-sectional view of a motor module 10C according to another modification. In the motor module 10C of the example of FIG. 7, the upper second partition 62C has only the second plate 621C that extends substantially perpendicular to the axial direction. That is, the upper second partition 62C does not have a second bent portion that extends from the second plate 621C to the other side in the axial direction. Thereby, the pipe line length of the 2nd communicating path 423C becomes the length same as the thickness of 62 C of upper side 2nd partition parts. In addition, the lower second partition part 64C has the same shape as the upper second partition part 62C.

  As shown in FIG. 7, each partition portion does not have to have a bent portion for securing the pipe length of each communication passage. As described above, even when the pipe lengths of the first communication path and the second communication path are short, the first expansion silencer and the second expansion silencer have a sound silencing performance.

  FIG. 8 is a cross-sectional view of a motor module 10D according to another modification. In the motor module 10C in the example of FIG. 8, the first communication path 421D and the second communication path 423D are arranged along the inner wall of the main body portion 21D. The first communication path 421D and the second communication path 423 are at least partially overlapped in the axial direction.

  As a result, the airflow generated by the fan 32D toward the other side in the axial direction along the inner wall of the main body portion 21D easily enters the first communication path 421D and the second communication path 423D. That is, the channel resistance in the upper channel 42D is lowered. Therefore, the ventilation efficiency as the whole motor module 10D can be improved.

  In the above embodiment and modification, the fan is a centrifugal fan, but the present invention is not limited to this. The fan used in the motor module and the vacuum cleaner of the present invention may be a mixed flow fan.

  In the above embodiment and the modification, the flow path is branched into two on the downstream side of the fan, but the present invention is not limited to this. There may be one flow path on the downstream side of the fan. In that case, the flow path may be an annular flow path connected in the circumferential direction outside the motor. Further, on the downstream side of the fan, the flow path may be branched into three or more.

  Although the vacuum cleaner of said embodiment was a handy type vacuum cleaner, this invention is not limited to this. The motor module of the present invention is mounted on an upright type or stick type vacuum cleaner that sucks gas to the intake port via the intake head and the dust separator and discharges the gas from the exhaust port, as in the handy type. May be.

  The motor module of the present invention may be mounted on a so-called canister type vacuum cleaner. The canister type vacuum cleaner has a hose portion that connects the intake head and the dust separator in addition to the intake head and the dust separator. The motor module sucks gas into the intake port via the intake head, the hose unit, and the dust separation unit, and discharges the gas from the exhaust port.

  Moreover, about the detailed shape of each member, you may differ from the shape shown by each figure of this application. For example, the shape of each part of an inlet port, an exhaust port, and a wall part may differ from said embodiment and a modification. Moreover, you may combine each said element suitably in the range by which a contradiction does not arise.

  The present invention can be used for a motor module and a vacuum cleaner.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 9 Rotating shaft 10, 10A, 10B, 10C, 10D Motor module 11 Dust separation part 12 Nozzle 20 Case 21, 21D Main body part 22 Handle part 31 Motor 32, 32A, 32D Fan 40, 40A Flow path 41 Fan accommodation Portion 42, 42A, 42D Upper channel 43, 43A Lower channel 51 Upper side wall 52 Lower side wall 61 Upper first partition 62, 62B, 62C Upper second partition 63 Lower first partition 64, 64B Lower second partition portion 71 First housing 72 Second housing 90 Plane 211 Inlet 212, 212A Exhaust outlet 401 First expansion silencer 402 Second expansion silencer 421, 421D, 431 First communication path 422 , 432 First silencing chamber 423, 423C, 423D, 433 Second communication path 424, 434 Second silencing chamber 511 Upper motor cover 512 Upper partition 521 Lower motor cover 522 Lower partition 611 First plate 612 First bent portion 621, 621B, 621C, 641B Second plate portion 622 Second bent portion 710, 720 Contact surface 711 First convex Part 721 First recess

Claims (13)

A motor having a rotating part that rotates about a rotation axis;
A fan arranged on one side in the axial direction of the motor and rotating together with the rotating part;
A housing that houses the motor and the fan inside;
Have
The housing is
A cylindrical main body extending in the axial direction;
An intake port disposed on one axial side of the fan;
An exhaust port disposed on the other axial side of the fan and on the radially outer side of the motor;
Between the main body and the motor, a flow path that is a space connecting the intake port and the exhaust port;
A partition portion disposed inside the flow path and partitioning the flow path;
Have
The flow path is
A fan housing portion in which the fan is housed and in direct communication with the air inlet;
A first silencing chamber communicating with the fan accommodating portion via a first communication path;
A second silencing chamber that communicates with the first silencing chamber via a second communication passage and that communicates directly or indirectly with the exhaust port;
Including
The channel cross-sectional area of the first silencing chamber is larger than the channel cross-sectional area of the first communication path,
The motor module, wherein a flow path cross-sectional area of the second silencing chamber is larger than a flow path cross-sectional area of the second communication path. The motor module according to claim 1,
The partition is
A plate-like first partition disposed between the fan housing and the first silencing chamber;
A plate-like second partition disposed between the first silencing chamber and the second silencing chamber;
Including motor module. The motor module according to claim 2,
The first partition is
A first plate portion extending substantially perpendicular to the axial direction;
A first bent portion extending from the first plate portion to the other side in the axial direction;
A motor module. The motor module according to claim 2 or 3, wherein
The second partition is
A second plate portion extending substantially perpendicular to the axial direction;
A second bent portion extending from the second plate portion to the other side in the axial direction;
A motor module. The motor module according to any one of claims 1 to 4,
The first communication path and the second communication path are disposed along an inner wall of the main body,
The motor module in which at least a part of the first communication path and the second communication path overlap in the axial direction. The motor module according to any one of claims 1 to 4,
The first communication path is disposed along the inner wall of the main body part,
The second communication path is disposed along the motor;
The motor module, wherein the first communication path and the second communication path are arranged at different positions when viewed in the axial direction. The motor module according to any one of claims 1 to 6,
The housing is
A motor covering portion disposed between the motor and the flow path;
At least a part of the flow path is a motor module surrounded by the motor covering portion and the main body portion. The motor module according to any one of claims 1 to 7,
The motor module is a motor module, wherein the exhaust port is a through-hole provided in the main body and directly communicates with the second silencing chamber. The motor module according to claim 8,
The housing is
The motor module further comprising a partition wall partitioning the second silencing chamber and the other axial side of the second silencing chamber on the other axial side of the exhaust port. The motor module according to any one of claims 1 to 9,
The housing is
A first housing formed integrally;
A second housing formed integrally;
Consisting of
The first housing and the second housing have a contact surface that contacts each other in a plane passing through the rotation shaft. The motor module according to claim 10,
The first housing has a convex portion protruding from the plane toward the second housing,
The second housing has a recess recessed from the plane.
The motor module, wherein the convex portion is fitted into the concave portion. An intake head;
A dust separation unit for separating the dust contained in the airflow and the airflow;
The motor module according to claim 10 or claim 11,
Have
The housing is
A handle having a substantially symmetrical shape with respect to the plane;
The motor module is a handy type, upright type, or stick type vacuum cleaner that sucks gas into the air inlet through the air inlet head and the dust separator and discharges the gas from the air outlet. An intake head;
A dust separation unit for separating the dust contained in the airflow and the airflow;
A hose part connecting the intake head and the dust separation part;
A motor module according to any one of claims 1 to 11,
Have
The motor module is a canister type vacuum cleaner that sucks gas into the intake port via the intake head, the hose portion, and the dust separation unit, and discharges the gas from the exhaust port.

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