JP2010273965A - Suction port body and vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction port body and a vacuum cleaner which are capable of preventing the vibrations of a rotary cleaning body and surely suppressing whirling, and having excellent assemblability and maintainability. <P>SOLUTION: The suction port body 8 includes: a box-shaped case 24 having a suction port 21 in the bottom part; a bumper portion 25 formed of a material softer than the case 24 and provided on the side part of the case 24; a pair of bearing holding portions 26 provided inside the case 24; a bearing 27 fitted to the bearing holding portions 26; and the rotary cleaning body 28 disposed at the suction port 21 and freely turnably pivoted at the bearing 27. For the bearing holding portions 28, at least a part of a portion holding the bearing 27 is formed integrally with the bumper portion 25. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a suction port body having a rotary cleaning body and a vacuum cleaner.

  Conventionally, a box-shaped main body portion having a suction port at the bottom, a bearing holding portion formed in the main body portion, a bearing supported by the bearing holding portion, and a suction port that is pivotally supported by the bearing. There is known a suction port body provided with a rotating cleaning body. The rotary cleaning body includes a columnar base portion along the rotation axis, and a bristle brush and a blade provided on the base portion in a spiral band shape or a radial band shape.

  When the rotary cleaning body is rotated, the suction port body configured in this manner causes the bristle brush or blade to pick up dust on the surface to be cleaned, and sucks up the dust that has been lifted up by the negative pressure acting on the suction port. . At this time, the rotary cleaning body receives a reaction force from a bristle brush or blade that contacts the surface to be cleaned. The rotary cleaning body vibrates due to its own imbalance and reaction force acting from the surface to be cleaned, or swings around the bearing holding part and the gap (backlash) of the bearing. The vibration and swinging of the rotary cleaning body vibrate the suction port body and generate noise.

  Therefore, a pair of bearing holding portions formed in the main body portion, a pair of bearings supported by the bearing holding portion, a rotary cleaning body rotatably supported by the bearing, and the bearing in the direction of the suction port of the main body portion 2. Description of the Related Art A suction port body that includes an urging spring is known (for example, see Patent Document 1).

  Further, a pair of bearing holding portions formed in the main body portion, a pair of bearings supported by the bearing holding portion, a rotary cleaning body rotatably supported by the bearing, and between the bearing holding portion and the bearing A suction port body provided with a spring formed in a waveform is known (for example, see Patent Document 2).

Japanese Patent Laid-Open No. 2-84921 JP-A-4-322627

  The conventional suction port body uses a spring that is a separate member from the main body part, elastically supports the bearing provided in the bearing holding part, and vibrations of the suction port body by vibration isolation of the rotary cleaning body and suppression of whirling And reduce noise.

  However, due to the size of the main body in consideration of the convenience of use of the suction port body, assembling and maintenance of the suction port body is made possible by using a spring of the size of the fingertip as a separate member. There is a problem from the point of view. For example, there is an increase in the amount of work related to assembly, the risk of the spring being lost when the rotary cleaning body is removed from the main body for cleaning, the risk of the spring falling off due to abnormal assembly, etc. There's a problem.

  On the other hand, in recent years, the main body of the vacuum cleaner in which the electric blower is housed has succeeded in effectively preventing vibration caused by the drive of the electric blower and reducing noise caused by exhaust gas as the support structure of the electric blower and the container are advanced. is doing. The user of the vacuum cleaner feels that the noise generated by the suction port body is relatively large because the magnitude of the noise generated from the vacuum cleaner main body is reduced. Therefore, in order to reduce the noise as a whole of the vacuum cleaner, it is necessary to reduce the noise of the suction port body in the same manner as the cleaner body.

  The present invention proposes a suction port body and a vacuum cleaner that can reliably prevent vibration of the rotating cleaning body and swing around the rotating cleaning body, and are excellent in assemblability and maintainability.

  In order to solve the above problems, a suction port body and a vacuum cleaner according to the present invention are formed of a box-shaped case having a suction port at the bottom, a material more flexible than the case, and provided on a side portion of the case. A bumper portion provided in the case, a pair of bearing holding portions provided inside the case, a bearing fitted to the bearing holding portion, and the suction port, and is rotatably supported by the bearing. The bearing holder is characterized in that at least a part of a part for holding the bearing is formed integrally with the bumper part.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to suppress the vibration prevention of a rotary cleaning body and a whirling reliably, the suction inlet body and vacuum cleaner excellent in assembly property and maintainability can be proposed.

The figure which showed the external appearance of the vacuum cleaner which concerns on embodiment of this invention. The top view which notched and showed the suction inlet of the vacuum cleaner which concerns on embodiment of this invention partially. The top view which showed an example of the bumper part and bearing holding part of the suction inlet which concern on embodiment of this invention. The figure which showed partially an example of the bumper part and bearing holding part of the suction inlet which concern on embodiment of this invention. Sectional drawing which showed the bearing holding part of the suction inlet of the vacuum cleaner which concerns on embodiment of this invention. Sectional drawing which showed the bearing holding part of the suction inlet of the vacuum cleaner which concerns on embodiment of this invention. Sectional drawing which showed the bearing holding part of the suction inlet of the vacuum cleaner which concerns on embodiment of this invention. Sectional drawing which showed the bearing holding part of the suction inlet of the vacuum cleaner which concerns on embodiment of this invention. Sectional drawing which showed the bearing holding part of the suction inlet of the vacuum cleaner which concerns on embodiment of this invention. Sectional drawing which showed the bearing holding part of the suction inlet of the vacuum cleaner which concerns on embodiment of this invention. Sectional drawing which showed the bearing holding part of the suction inlet of the vacuum cleaner which concerns on embodiment of this invention. Sectional drawing which showed the bearing holding part of the suction inlet of the vacuum cleaner which concerns on embodiment of this invention.

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

  FIG. 1 is a diagram illustrating an appearance of a vacuum cleaner according to an embodiment of the present invention.

  As shown in FIG. 1, the vacuum cleaner 1 according to this embodiment includes a vacuum cleaner body 2, a dust collecting hose 3, a hand operating tube 4, a gripping unit 5, an operating unit 6, and an extension tube 7. The suction port body 8 is provided.

  The cleaner body 2 includes a dust separation and collection unit 10, an electric blower 12, a control unit 13, and a power cord 14 that guides electric power to the electric blower 12. The dust separating and collecting unit 10 is detachably attached to a dust collecting chamber 2 a formed in the cleaner body 2. The dust separation and collection unit 10 is configured by a dust collection method such as a paper pack method or a centrifugal separation method. The control unit 13 has a plurality of preset operation modes, and is configured to be able to selectively select an arbitrary operation mode based on an operation signal input from the operation unit 6. Each operation mode is set with different electric power supplied to the electric blower 12. The control unit 13 supplies electric power corresponding to the selected operation mode to the electric blower 12 and controls the operation output of the electric blower 12. The power cord 14 includes a power plug 15 at its free end.

  Moreover, the cleaner body 2 has a connection port 2b to which one end of the dust collecting hose 3 is detachably connected, and an exhaust port (not shown) for discharging the exhaust of the electric blower 12 to the outside of the cleaner body. .

  The dust collection hose 3 is flexible and is formed in a bendable elongated substantially cylindrical shape. One end of the dust collection hose 3 is detachably connected to the connection port 2b. The dust collection hose 3 communicates with the inside of the cleaner body 2.

  One end of the hand operation tube 4 is provided at the other end of the dust collecting hose 3. The hand control tube 4 communicates with the inside of the cleaner body 2 through the dust collecting hose 3.

  The grip part 5 is operated by the user of the vacuum cleaner 1 to operate the vacuum cleaner 1. The grip portion 5 is formed to protrude from the other end portion of the hand operation tube 4 and is curved toward one end portion of the hand operation tube 4 provided with the dust collecting hose 3.

  The operation unit 6 is provided in the grip unit 5. The user of the vacuum cleaner 1 can select the operation mode of the electric blower 12 by operating the operation unit 6. The operation unit 6 includes a stop switch 6a that stops the electric blower 12, a start switch 6b that starts operation of the electric blower 12, and the like. The operation mode of the electric blower 12 can be alternatively selected by repeatedly operating the start switch 6b.

  The extension tube 7 is formed in an elongated and substantially cylindrical shape that can be expanded and contracted. The extension tube 7 has a telescopic structure by overlapping a plurality of cylindrical bodies. One end of the extension tube 7 is detachably connected to the other end of the hand operation tube 4. The extension pipe 7 communicates with the inside of the cleaner body 2 through the hand operation pipe 4 and the dust collection hose 3.

  The suction port body 8 is detachably connected to one end of the extension pipe 7. The suction port body 8 communicates with the inside of the cleaner body 2 through the extension pipe 7, the hand operation pipe 4, and the dust collection hose 3.

  In the vacuum cleaner 1, when the start switch 6 b of the operation unit 6 is operated, the electric blower 12 starts operation, and negative pressure acts on the dust separation and collection unit 10. This negative pressure acts on the suction port body 8 from the connection port 2b of the cleaner body 2 through the dust collecting hose 3, the hand operation tube 4 and the extension tube 7. If it does so, the vacuum cleaner 1 will inhale the dust collected on the to-be-cleaned surfaces, such as a floor, from the suction inlet body 8 with air, and will clean the to-be-cleaned surface. The dust-containing air sucked into the suction port body 8 is separated into air and dust by the dust separating and collecting part 10 accommodated in the cleaner body 2. The separated dust is collected in the dust separation and collection unit 10. On the other hand, the separated air passes through the electric blower 12 and is discharged from the exhaust port to the outside of the cleaner body 2.

  FIG. 2 is a plan view partially showing the suction port body of the electric vacuum cleaner according to the embodiment of the present invention.

  As shown in FIG. 2, the suction port 8 includes a box-shaped main body portion 17 having a substantially rectangular parallelepiped shape, and a connection tube portion 18 to which the extension tube 7 is detachably connected.

  Here, let the advancing direction (solid line arrow X in FIG. 2) of the suction inlet 8 be the front, and let the opposite direction be back. Further, with the suction port 8 placed on a substantially horizontal surface to be cleaned such as a floor surface, the left side (solid arrow Y in FIG. 2) when viewed from the rear is on the left and the opposite direction is on the right And Furthermore, the + Z direction of the right-handed coordinate system orthogonal to the front-rear direction and the left-right direction of the suction port body 8 is set as the upper side, and the opposite direction is set as the lower side.

  The main body 17 has a short side in the front-rear direction and a long side in the left-right direction. The main body 17 includes a case 24 in which a suction chamber 22 having a suction port 21 is defined at the bottom, a bumper portion 25 provided on a side portion of the case 24, formed of a material more flexible than the case 24, and a case 24. A pair of bearing holding portions 26 provided in the interior, a pair of bearings 27 fitted to the bearing holding portion 26, and a rotary cleaning body that is disposed in the suction port 21 and is pivotally supported by the bearing 27. 28 and a drive unit 29 that rotates the rotary cleaning body 28.

  The case 24 is formed using, for example, ABS resin, and a box-shaped lower case 31 whose upper side is opened, an upper case 32 that covers the rear portion of the lower case 31, a lid 33 that covers the front portion of the lower case, Is provided. In the case 24, a suction chamber 22 having a suction port 21 is defined inside the front side, and device storage chambers 34a and 34b are defined inside the left and right sides of the rear side. The suction chamber 22 is formed wide in the left-right direction of the main body portion 17 and communicates with the connecting pipe portion 18. The suction port 21 is disposed on the bottom surface of the main body portion 17. In addition, the suction port 21 is a substantially rectangular opening formed elongated in the left-right direction of the main body portion 17. The suction chamber 22 faces the surface to be cleaned through the suction port 21 when the suction port body 8 is arranged on the surface to be cleaned. The upper case 32 partitions the device storage chambers 34 a and 34 b together with the lower case 31. The lid 33 is detachably attached to the lower case 31 and defines the suction chamber 22 together with the lower case 31.

  The bumper portion 25 is integrally formed over a part of the front side portion, the left and right side portions, and the rear side portion of the main body portion 17. The bumper portion 25 is formed using a material that is softer than the material used for the case 24, such as an elastomer.

  The bearing holding portion 26 holds the rotary cleaning body 28 in the suction chamber 22 via the bearing 27, and is disposed on each of the left and right sides of the suction chamber 22 and provided to face each other. Further, the bearing holding portion 26 is formed integrally with the bumper portion 25 at least a part of the portion holding the bearing 27.

  The bearing 27 is detachably fitted to the bearing holding portion 26.

  The rotary cleaning body 28 is accommodated in the suction chamber 22 and is held by the bearing holding portion 26 via the bearing 27. The rotary cleaning body 28 includes a rotary shaft 35, a pulley 36 provided in the vicinity of one end portion of the rotary shaft 35, and a plurality of brush hairs 37 protruding in a spiral band from the peripheral wall portion of the rotary shaft 35. And comprising. The rotary cleaning body 28 may be provided with a blade (not shown) formed of an elastic body such as rubber in addition to the brush bristles 37. Bearings 27 are rotatably provided at both ends of the rotating shaft 35.

  The drive unit 29 is housed in the left or right, for example, the left device housing chamber 34b. The drive unit 29 includes an electric motor 38 as a drive source for rotating the rotary cleaning body 28, and a belt 39 that transmits the driving force of the electric motor 38 to the pulley 36 of the rotary cleaning body 28. The driving source of the rotary cleaning body 28 may be a turbine that generates a rotational force using negative pressure acting on the suction port body 8 instead of the electric motor 38. A hole (not shown) communicating with the suction chamber 22 may be provided at an appropriate position of the lid 33 as a drive source for rotating the rotary cleaning body 28. This hole is arranged so that the air sucked into the suction chamber 22 through the hole by the negative pressure acting on the suction chamber 22 is blown to the brush bristles 37 and the blades of the rotary cleaning body 28. According to such a drive source, the rotary cleaning body 28 is rotated by the reaction of the air blown to the bristles 37 and the blades.

  The connecting pipe portion 18 is disposed at a substantially central portion in the width direction on the rear side of the main body portion 17. In addition, the connecting pipe part 18 includes a rotating connecting pipe part 41 and a tilting connecting pipe part 42. The rotation connecting pipe portion 41 is disposed at a substantially central portion in the width direction on the rear side of the main body portion 17 and is pivotally supported about an axis (X axis) along the front-rear direction of the suction port body 8. The tilt connection pipe portion 42 is provided on the rotary connection pipe portion 41 so as to be tiltable. That is, the tilt connection pipe part 42 is configured to be swingable about an axis orthogonal to the rotation axis (X axis) of the rotation connection pipe part 41. Further, the tilt connection pipe part 42 is detachably connected to the free end part of the extension pipe 7.

  The suction port body 8 configured in this manner applies a negative pressure to the suction chamber 22 from the extension pipe 7 through the connecting pipe portion 18. This negative pressure acts on the suction port 21 and sucks dust on the surface to be cleaned into the suction chamber 22 together with air. The dust-containing air sucked into the suction chamber 22 is guided to the extension pipe 7 through the connection pipe portion 18.

  FIG. 3 is a plan view showing an example of a bumper portion and a bearing holding portion of the suction port body according to the embodiment of the present invention.

  FIG. 4 is a view partially showing an example of the bumper portion and the bearing holding portion of the suction port body according to the embodiment of the present invention.

  As shown in FIGS. 3 and 4, the bumper portion 25 and the bearing holding portion 26 of the suction port body 8 are integrally formed. The bearing holding part 26 may be provided with all the parts for holding the bearing 27 integrally with the bumper part 25, or may be provided with at least a part of the part for holding the bearing 27 integrally with the bumper part 25.

  The bearing holding portion 26 is formed to be recessed so as to hold the rotary cleaning body 28 against the radial and thrust forces of the rotary cleaning body 28 transmitted through the bearing 27. That is, the bearing holding portion 26 is a portion that holds the bearing 27, and includes a front side wall 45 a positioned on the front side of the bearing 27, a rear side wall 45 b positioned on the rear side of the bearing 27, and an upper side wall positioned on the upper side of the bearing 27. 45c, a lower side wall 45d located below the bearing 27, and a bottom wall 45e located in the thrust direction of the bearing 27. The front side wall 45 a, the rear side wall 45 b, the upper side wall 45 c, and the lower side wall 45 d are located in the radial direction of the bearing 27.

  The bearing holding portion 26 according to this embodiment includes all the front side wall 45a, the rear side wall 45b, the upper side wall 45c, the lower side wall 45d, and the bottom wall 45e integrally with the bumper portion 25. The other parts of the wall 45a, 45b, 45c, 45d, and 45e are formed integrally with the case 24 by the light weight of the radial and thrust forces of the rotary cleaning body 28 transmitted through the case. You can also

  5 and 6 are cross-sectional views showing the bearing holding portion of the suction port body of the electric vacuum cleaner according to the embodiment of the present invention. FIG. 5 is a view showing a cross section of the suction port body 8 taken along a plane parallel to the XZ plane, and is a view showing the bearing holding portion 26 a arranged on the right side of the suction port body 8. FIG. 6 is a view showing a cross section of the suction port body 8 taken along a plane parallel to the YZ plane, and is a view showing the bearing holding portion 26 a arranged on the right side of the suction port body 8.

  As shown in FIGS. 5 and 6, the lid 33 of the suction port 8 is detachably attached to the front portion of the lower case 31, and is integrated with the bumper portion 25 of the bumper portion 25 and the bearing holding portion 26a. The formed portion is held together with the lower case 31. Specifically, in the bearing holding portion 26a, a front side wall 45a, a rear side wall 45b, an upper side wall 45c, and a lower side wall 45d that hold the side surface of the bearing 27 are formed integrally with the bumper portion 25. In the bearing holding portion 26 a, a bottom wall 45 e that holds the end surface of the bearing 27 is formed integrally with the bumper portion 25. Further, the bearing holding portion 26a is held at the front and rear portions and the lower portion by a plurality of ribs 47 formed on the lower case 31, and is held at the upper portion by a lid 33 that is detachably mounted above the lower case 31. It is sandwiched between the case 31 and the lid 33.

  Further, the lid body 33 is provided with a rotary cleaning body fall-off prevention rib 49 that is spaced apart from the collar portion 48 formed on the rotary cleaning body 28.

  7 and 8 are cross-sectional views showing the bearing holding portion of the suction port body of the vacuum cleaner according to the embodiment of the present invention. 7 and 8 are views showing a cross section of the suction port body 8 taken along a plane parallel to the XZ plane, and a view showing the bearing holding portion 26b disposed on the left side of the suction port body 8. is there.

  As shown in FIGS. 7 and 8, the bearing holding portion 26 b of the suction port body 8 is formed integrally with the bumper portion 25 with a rear side wall 45 b that holds at least a side surface of the bearing 27 on the drive portion 29 side.

  As shown in FIG. 7, the bearing holding portion 26 b may have a front side wall 45 a, an upper side wall 45 c and a lower side wall 45 d formed integrally with the bumper portion 25 in addition to the rear side wall 45 b.

  Further, as shown in FIG. 8, the bearing holding portion 26b may have an upper side wall 45c and a lower side wall 45d formed integrally with the bumper portion 25 in addition to the rear side wall 45b. That is, the bearing holding portion 26b on the side close to the drive portion 29 is biased in the direction of the drive portion 29 by the tension of the belt 39 that is hung between the pulley 36 of the rotary cleaning body 28 and the drive portion 29. The front side wall 45a located on the opposite side can be constituted by a bearing holding rib 51 formed on the lid 33 (or the lower case 31). By increasing the tension of the belt 39, the bearing holding rib (not shown) formed on the lid 33 constitutes the upper side wall 45c, and the bearing holding rib (not shown) formed on the lower case 31 constitutes the lower side wall. 45d can also be configured.

  9 and 10 are cross-sectional views showing a bearing holding portion of the suction port body of the electric vacuum cleaner according to the embodiment of the present invention.

  As shown in FIG. 9, the bearing holding portion 26 a of the suction port body 8 is a portion formed integrally with the bumper portion 25, and is provided with irregularities 52 on the inner surface side facing the bearing 27.

  The bearing holding portion 26 a according to the present embodiment includes a front side wall 45 a, a rear side wall 45 b, an upper side wall 45 c, and a lower side wall 45 d that are formed integrally with the bumper portion 25. Prepare.

  Similarly, the other-side bearing holding portion 26b can also be provided with irregularities 52.

  As shown in FIG. 10, the bearing holding portion 26 a of the suction port body 8 is a portion formed integrally with the bumper portion 25, and includes an unevenness 53 on the outer surface side facing the case 24.

  The bearing holding portion 26 a according to the present embodiment includes a front side wall 45 a, a rear side wall 45 b, an upper side wall 45 c, and a lower side wall 45 d that are integrally formed with the bumper portion 25, and has unevenness 53 on the outer surface side facing the case 24. Prepare.

  In addition, the other side bearing holding part 26b can also be provided with the unevenness | corrugation 53 similarly.

  FIG. 11 is a cross-sectional view showing the bearing holding portion of the suction port body of the electric vacuum cleaner according to the embodiment of the present invention.

  As shown in FIG. 11, the bearing holding portion 26 a of the suction port body 8 includes unevenness 54 on the portion that holds the end surface of the bearing 27, that is, the bottom wall 45 e.

  Similarly, the other-side bearing holding portion 26b can also be provided with unevenness 54.

  FIG. 12 is a cross-sectional view showing a bearing holding portion of the suction port body of the electric vacuum cleaner according to the embodiment of the present invention.

  As shown in FIG. 12, the bearing holding portion 26 of the suction port 8 is provided such that a portion formed integrally with the bumper portion 25 is rotatable and displaceable with respect to the bumper portion 25. In the bearing holding portion 26 according to the present embodiment, the front side wall 45a, the rear side wall 45b, the upper side wall 45c, the lower side wall 45d, and the bottom wall 45e formed integrally with the bumper portion 25 are rotatable and displaceable with respect to the bumper portion 25. Provided.

  Of the bumper portion 25 and the bearing holding portion 26, the portion formed integrally with the bumper portion 25 is formed using a flexible material and can be easily deformed. The portion formed integrally with the bumper portion 25 can be rotated.

  Here, the rotating cleaning body 28 is cleaned in a state where it is removed from the case 24 because fiber dust becomes entangled or cotton dust clings to the bristles 37 as it is used. Need to return.

  Therefore, first, the lid 33 is detached from the case 24, and the rotary cleaning body 28 is exposed. Next, one end of the rotary cleaning body 28 together with the bearing 27 is extracted from the bearing holding portion 26b. For example, the bearing holding portion 26b configured as shown in FIG. 8 is configured such that the front side wall 45a is removed together with the lid 33 by removing the lid 33, and the bearing 27 can be easily extracted. Thereby, the restriction | limiting of the one end side of the rotary cleaning body 28 is lifted.

  Then, as shown in FIG. 12, the entire bearing holding portion 26a is provided so as to be rotatable and displaceable with respect to the bumper portion 25, so that the rotary cleaning body 28 and the bearing 27 can be easily pulled out from the bearing holding portion 26a. The bearing 27 can be oriented appropriately. In this state, the bearing 27 is extracted from the bearing holding portion 26 a, and the rotary cleaning body 28 can be extracted from the case 24.

  When the rotary cleaning body 28 is returned to the case 24, the bearing 27 can be fitted into the bearing holding portions 26a and 26b by the reverse method, and the rotary cleaning body 28 can be accommodated in the case 24.

  According to the suction port body 8 according to the present embodiment, the bearing holding portion 26 (or a part of the bearing holding portion 26) formed of a material more flexible than the case 24 is interposed between the case 24 and the bearing 27. Thus, it is possible to reduce vibrations and swings due to the rotation of the rotary cleaning body 28, and to suppress the propagation of vibrations to the case 24, thereby reducing noise. Thereby, the suction inlet 8 can comprise the quiet vacuum cleaner 1 with low noise together with the cleaner body 2 with reduced noise in recent years.

  Moreover, according to the suction inlet 8 which concerns on this embodiment, it is possible to form the bearing holding | maintenance part 26 (or a part of bearing holding | maintenance part 26) integrally with the bumper part 25, and the conventional suction inlet body of FIG. Thus, there is no possibility that inconveniences such as dropping or losing the separate member and sucking into the cleaner main body 2 occur without requiring another member such as a spring.

  Furthermore, according to the suction port body 8 according to the present embodiment, the bearing holding portion 26 (or a part of the bearing holding portion 26) is formed integrally with the bumper portion 25, so that a spring like a conventional suction port body is formed. Assembling is possible without the need to assemble another member such as the case 24 (or a conventional bearing holding portion formed integrally with the case 24) and the bearing 27, or disassemble and reassemble for cleaning. The structure can be excellent in maintainability.

  Furthermore, according to the suction port body 8 according to the present embodiment, another member such as a spring is connected to the case 24 (or a conventional bearing holding portion formed integrally with the case 24) and a bearing as in the conventional suction port body. Compared with the case of assembling with the bumper portion 27, it is possible to selectively form an important portion of the bearing holding portion 26 with the bumper portion 25 for vibration isolation of the rotary cleaning body 28, and more effectively. It is possible to reduce the noise by reducing the vibration and swinging caused by the rotation of the rotary cleaning body 28 and suppressing the propagation of the vibration to the case 24.

  Further, according to the suction port body 8 according to the present embodiment, the case 24 is provided by providing irregularities on the inner surface or the outer surface of the bearing holding portion 26 (or a part of the bearing holding portion 26) formed integrally with the bumper portion 25. Alternatively, the support rigidity between the bearing 27 and the bearing 27 can be set appropriately to reduce vibrations and swings caused by the rotation of the rotary cleaning body 28, and to suppress the propagation of vibrations to the case 24, thereby reducing noise.

  Therefore, according to the vacuum cleaner 1 and the suction port body 8 according to the present invention, it is possible to reliably prevent vibration of the rotary cleaning body 28 and swinging, and to have a structure excellent in assemblability and maintainability. be able to.

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 2 Vacuum cleaner main body 2a Dust collection chamber 2b Connection port 3 Dust collection hose 4 Hand operation pipe 5 Gripping part 6 Operation part 6a Stop switch 6b Start switch 7 Extension pipe 8 Suction port body 10 Dust separation dust collection part 12 Electric Blower 13 Control unit 14 Power cord 15 Power plug 17 Body portion 18 Connection pipe portion 21 Suction port 22 Suction chamber 24 Case 25 Bumper portions 26, 26a, 26b Bearing holding portion 27 Bearing 28 Rotating cleaning body 29 Driving portion 31 Lower case 32 Top Case 33 Lids 34a and 34b Equipment storage chamber 35 Rotating shaft 36 Pulley 37 Brush hair 38 Electric motor 39 Belt 41 Rotating connection pipe part 42 Tilt connection pipe part 45a Front side wall 45b Rear side wall 45c Upper side wall 45d Lower side wall 45e Bottom wall 47 Rib 48 ４９ part 49 Rotation cleaning body drop prevention rib 51 Bearing holding rib 52, 53, 54 Concavity and convexity

Claims (11)

A box-like case having a suction port at the bottom;
A bumper portion formed of a material softer than the case and provided on a side portion of the case;
A pair of bearing holding portions provided inside the case;
A bearing fitted in the bearing holding portion;
A rotating cleaning body disposed at the suction port and rotatably supported by the bearing;
The suction port body, wherein at least a part of a portion for holding the bearing is formed integrally with the bumper portion. The suction port body according to claim 1, further comprising: a lid body that is detachably attached to the case and clamps a portion of the bearing holding portion that is formed integrally with the bumper portion together with the case. . A drive unit for rotating the rotary cleaning body;
A belt for transmitting a driving force from the driving unit to the rotary cleaning body,
2. The suction port body according to claim 1, wherein a portion of the bearing holding portion that holds a side surface of the bearing on the drive portion side is formed integrally with the bumper portion. The suction port body according to claim 1, wherein the bearing holding portion is formed integrally with the bumper portion at a portion that holds the entire circumference of the side surface of the bearing. A lid that is detachably attached to the case, and clamps a portion of the one bearing holding portion formed integrally with the bumper portion together with the case;
2. The suction port body according to claim 1, wherein a portion of the other bearing holding portion that holds the entire circumference of the side surface of the bearing is formed integrally with the bumper portion. A drive unit for rotating the rotary cleaning body;
A belt for transmitting a driving force from the driving unit to the rotary cleaning body,
The bearing holding portion on the side close to the belt is formed integrally with the bumper portion at a portion holding the side surface of the bearing on the drive portion side,
2. The suction port body according to claim 1, wherein a portion of the other bearing holding portion that holds the entire circumference of the side surface of the bearing is formed integrally with the bumper portion. The bearing holding portion is a portion formed integrally with the bumper portion of the bearing holding portion, and is provided with irregularities on the inner surface side facing the bearing or the outer surface side facing the case. The suction inlet body according to any one of claims 1 to 5. The bearing is detachably fitted to the bearing holding portion,
The bearing holding portion is provided such that a portion of the bearing holding portion formed integrally with the bumper portion is rotatably displaceable with respect to the bumper portion.
The suction port body according to claim 1, wherein when the rotary cleaning body is attached to and detached from the case, the rotary cleaning body can be directed in a direction in which the bearing can be fitted to and removed from the bearing holding portion. The suction port body according to claim 1, wherein the bearing holding portion is formed integrally with the bumper portion so as to hold an end face of the bearing. The suction port body according to claim 9, wherein the bearing holding portion has irregularities in a portion that holds an end face of the bearing. The vacuum cleaner body,
A vacuum cleaner comprising the suction port according to any one of claims 1 to 10.

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