JP6506809B6 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner, and more particularly to a suction body of the vacuum cleaner.

  As a vacuum cleaner which cleans a floor surface, a floor movement type (it is also called "canister type") vacuum cleaner and a broom type (it is called "vertical type" or "stick type") vacuum cleaner are known. ing.

  As a suction body of a floor moving type (canister type) electric vacuum cleaner, in Patent Document 1 (Japanese Patent Application Laid-Open No. 2009-17902), a suction opening formed by attaching an upper case to a lower case having an opening on the lower surface. Electric vacuum cleaner comprising a main body, a rotary cleaning unit storage chamber formed inside the suction port main body, a rotary cleaning unit rotatably disposed in the rotary cleaning unit storage chamber, and an electric motor for driving the rotary cleaning unit In the suction body of the second aspect, the rotary cleaning body is provided with a cleaning member disposed in the left-right direction and a cylindrical brush disposed in the circumferential direction. ing.

JP, 2009-17902, A

  By the way, the broom type (stick type) vacuum cleaner has a shape that uses the handle and the floor suction tool (suction body) integrally with the main body, and compared with the floor moving type (canister type) vacuum cleaner, the suction port In order to move the body on the surface to be cleaned (floor surface), a large operating force is required. For this reason, a broom-shaped (stick-type) vacuum cleaner with good operability is required.

  Then, this invention makes it a subject to provide a vacuum cleaner with good operativity.

To solve such problems, an electric vacuum cleaner according to the present invention, between the handle and the suction body, in an electric vacuum cleaner comprising an electric blower and dust case, wherein the suction body is formed below surface And a rotary cleaning body rotatably disposed in the rotary cleaning body storage chamber, and an electric motor for driving the rotary cleaning body, the electric motor operating the electric vacuum cleaner And the rotational cleaning body is a brush that is a brush that protrudes outward from the outer peripheral surface of the cylindrical base, and a cylindrical that is a brush that is denser than the cleaning brush. And a brush.

  According to the present invention, a vacuum cleaner with good operability can be provided. Furthermore, by driving the rotary cleaning body by the electric motor, it is possible to provide a vacuum cleaner with improved performance for removing dust.

(A) is a perspective view of the vacuum cleaner concerning this embodiment, (b) is a sectional view of the vacuum cleaner concerning this embodiment. It is a perspective view of a mouthpiece with which a vacuum cleaner concerning this embodiment is provided. It is a bottom view of a mouthpiece with which a vacuum cleaner concerning this embodiment is provided. It is a bottom view of a suction body in the state where a rotating body was removed. (A) is the sectional view on the AA line of FIG. 3, (b) is the BB sectional drawing of FIG. It is the partial expanded sectional view which expanded the lower surface side vicinity of a suction body among CC sectional view line | wires of FIG. It is a side view of a mouthpiece in the state where a mouthpiece was made to contact a floor surface. It is the CC sectional view taken on the line of FIG. 3, (a) is the state which laid the suction inlet joint, (b) is the state which made the suction inlet upright. It is a front view of a mouthpiece with which a vacuum cleaner concerning this embodiment is provided. It is the D section enlarged view of FIG. It is the partial expanded sectional view which expanded the vicinity of the LED guide among the EE sectional drawing of FIG. It is a lower surface side perspective view of a suction body in the state where a bearing attaching member was removed from a lower case. It is a figure explaining the unit part of a drive motor (motor), (a) is the figure which looked at the unit part of a drive motor (motor) from the top, (b) is the FF sectional view taken on the line of (a) It is.

  Hereinafter, modes for carrying out the present invention (hereinafter, referred to as “embodiments”) will be described in detail with reference to the drawings as appropriate. In each of the drawings, the same reference numerals are given to the common parts, and the duplicated explanation is omitted.

«Electric vacuum cleaner»
First, the electric vacuum cleaner 1 which concerns on this embodiment is demonstrated using FIG. Fig.1 (a) is a perspective view of the vacuum cleaner 1 which concerns on this embodiment, FIG.1 (b) is sectional drawing of the vacuum cleaner 1 which concerns on this embodiment. In addition, in FIG. 1 (a), the state which mounted the vacuum cleaner 1 in charge stand 6 which fixes the vacuum cleaner 1 and charges the storage battery 2d (refer FIG. 1 (b)) mentioned later is illustrated in figure. There is. Moreover, in FIG.1 (b), the state which the vacuum cleaner 1 self-supported is shown in figure.

  As shown to Fig.1 (a), the vacuum cleaner 1 which concerns on this embodiment is a broom type (it is also called "vertical type" or "stick type") vacuum cleaner, and the handy main body 2 and a stick handle 3 and the suction body 4 are integrally provided.

  As shown in FIG. 1B, the handy main body (vacuum cleaner main body) 2 includes a handy main body inlet pipe 2a, a dust case 2b, an electric blower 2c, and a storage battery 2d. In addition, the handy main body 2 is provided with a handy handle 2 e that the user holds when transporting the vacuum cleaner 1. In addition, the code | symbol G of FIG.1 (b) shows the gravity center of the vacuum cleaner 1. As shown in FIG.

  The stick handle 3 is a handle held by the user when cleaning with the vacuum cleaner 1 and is provided above the handy main body 2. Further, the stick handle 3 is provided with a power button 3a for switching the operation / stop of the electric vacuum cleaner 1 (electric blower 2c).

  The suction body 4 is attached to the handy main body inlet pipe 2 a of the handy main body 2. And the flow path 5 which air can distribute | circulate to the suction body 4, the handy main body inlet pipe 2a, the dust case 2b, and the electric blower 2c is formed.

  In the electric vacuum cleaner 1 configured as described above, when the user turns on the power button 3a, the electric blower 2c operates with the power supplied from the storage battery 2d to generate a negative pressure. By this negative pressure, dust (dust) is sucked from the suction body 4 together with air, and the sucked air and dust flow into the dust case 2 b through the flow path 5. In the dust case 2b, air and dust are separated, the dust is collected in the dust case 2b, and the air from which the dust is removed is sucked by the electric blower 2c and exhausted to the outside of the vacuum cleaner 1.

«Suction body 4»
Next, the mouthpiece 4 provided in the electric vacuum cleaner 1 according to the present embodiment will be described with reference to FIGS. 2 to 13. In the following description, with the longitudinal direction of the suction body 4 as the left-right direction of the suction body 4 and the suction body 4 placed on a horizontal floor surface, the rotational cleaning body storage chamber 30 (see FIG. 3) described later The side formed is the lower side, and the side opposite to the side on which the rotational cleaning body storage chamber 30 (see FIG. 3) described later is formed is the upper side, and the forward direction side of the mouthpiece 4 is the front side. Make the backward direction side the back side.

Drawing 2 is a perspective view of mouthpiece 4 with which vacuum cleaner 1 concerning this embodiment is provided.
As shown in FIG. 2, the suction body 4 includes an upper case 11, a lower case 12, a suction joint 13, a bumper 14, and an LED guide 15.

  The flow path pipe 13A at the upper end of the suction joint 13 communicates with the handy main body inlet pipe 2a (see FIG. 1B) of the handy main body 2, is inserted into the flow path 5, and is fixed by the suction clamp 13B. Further, the suction joint 13 is provided with two conductive suction terminals 13C, and the suction joint 13 is communicated with the handy main body inlet pipe 2a of the handy main body 2 and fixed to the flow path 5 to obtain the storage battery 2d. Power from (see FIG. 1 (b)) is supplied.

Drawing 3 is a bottom view of mouthpiece 4 with which vacuum cleaner 1 concerning this embodiment is provided.
As shown in FIG. 3, wheels 21 and 22, rear wheels 23, brush members 24 and 25, floor surface detection wheels 26, and fixed brushes 27 are provided on the lower surface of the suction body 4 (lower case 12). Is provided. Further, on the lower surface of the suction body 4 (lower case 12), a fixed brush relief concave portion 28, a lower surface rear portion 29 and a rotation cleaning body storage chamber 30 are formed. Further, in the rotational cleaning body storage chamber 30, a rotational cleaning body 40 is disposed. Moreover, although mentioned later using FIG. 9 and FIG. 10, the dust collection space 50 is formed in the front side of the lower case 12 of the suction body 4. As shown in FIG. Moreover, although mentioned later using FIG. 12, the removable bearing holding member 18 is attached.

  The wheels 21 and 22 are disposed on the left and right of the suction body 4, and are disposed on the front side (forward direction side) of the rotary cleaning body 40 (rotational cleaning body storage chamber 30). The rear wheel 23 is disposed at the center of the suction body 4 in the left-right direction, and is disposed on the rear side (backward direction side) of the rotary cleaning body 40. The rear wheels (wheels) 23 are shaped so as to have a smaller central diameter compared to the left and right sides. The center of the rotary cleaning body 40 (rotational cleaning body storage chamber 30) is arranged in a triangle (trapezoid) connecting the wheels 21 to 23 when viewed from the lower surface side of the suction body 4.

  The position where the lower surface of the lower case 12 of the suction body 4 contacts the floor in a state where the wheels 21 and 23 are in contact with the floor and the wheel 22 is lifted (the electric vacuum cleaner 1 is inclined diagonally left backward) The brush member 24 is provided. Further, in a state in which the wheels 22 and 23 are in contact with the floor and the wheel 21 is lifted (the electric vacuum cleaner 1 is inclined obliquely to the rear right), the lower surface of the lower case 12 of the suction body 4 contacts the floor. The brush member 25 electric vacuum cleaner 1 is provided at the position where Here, the suction body 4 basically contacts the floor surface with the wheels 21 to 23 and supports the weight of the vacuum cleaner 1 (see FIG. 1). For this reason, the brush members 24 and 25 do not always contact with the floor surface, and the area of the brush members 24 and 25 may be small. The brush members 24 and 25 prevent the lower case 12 from coming into direct contact with the floor surface even when the sucker 4 is in an unstable position, thereby preventing the floor surface from being damaged.

  The floor surface detection wheel 26 is for detecting whether the suction body 4 is installed on the floor surface. When the floor surface detection wheel 26 comes in contact with the floor surface, the automatic return type detection switch (not shown) provided in the case (upper case 11 and lower case 12) is pushed, and the suction port 13C (see FIG. 2) A power supply line (not shown) is connected to a drive motor (electric motor) 20 (see FIG. 13 described later) for driving the rotation cleaning body 40 to rotate. On the other hand, when the floor surface detection wheel 26 separates from the floor surface, the detection switch (not shown) returns, and the suction terminal 13C (see FIG. 2) to the drive motor (electric motor) 20 (see FIG. A power supply line (not shown) is cut off. The drive motor (electric motor) 20 provides an operating force that reduces the power for operating the vacuum cleaner 1. This makes it possible to provide a vacuum cleaner with good operability.

  The fixed brush 27 is disposed on the back side (the backward direction side) of the rotational cleaning body storage chamber 30 in which the rotational cleaning body 40 is disposed. The fixed brush 27 sweeps the floor surface to collect the dust, and closes the lower surface of the suction body 4 and the floor surface on the back side (backward direction side) from the rotary cleaning body storage chamber 30. Further, as described above, the fixed brush relief concave portion 28 is formed on the back surface side (retraction direction side) of the fixed brush 27 of the lower case 12. Further, a lower surface rear portion 29 is formed behind the fixed brush relief recess 28 of the lower case 12. The lower surface of the rotary cleaning body 40 is located at the lowermost surface of the suction body 4. Thereby, the rotary cleaning body 40 contacts the floor surface, and the rotary cleaning body 40 rotated by the drive motor (electric motor) 20 reduces the power for operating the vacuum cleaner 1, and the vacuum cleaner having good operability is obtained. Can be provided.

  The rotation cleaning body storage chamber 30 is a space communicating with the flow path pipe 13A (see FIG. 2), and is a space where dust on the floor surface is sucked with the air. Further, in the rotational cleaning body storage chamber 30, a rotational cleaning body 40 is rotatably disposed.

  The rotary cleaning body 40 includes a cleaning brush 41 and cylindrical brushes (self-running brushes) 42 and 43 provided on the left and right ends of the cleaning brush 41, and a drive motor (electric motor) 20 (see FIG. 13 described later). By the reference), the suction body 4 is rotationally driven in the forward direction (clockwise in FIG. 6 described later).

  The cleaning brush 41 is a brush made of fibers or the like protruding outward (in the radial direction) from the outer peripheral surface of the cylindrical base 44 (see FIG. 5A described later). In addition, in FIG. 3, although the cleaning brush 41 is protruded and provided helically, it is not limited to this.

  Cylindrical brush beds 45 and 46 (see FIG. 5A described later) larger in diameter than the substrate 44 are provided at both ends of the cylindrical substrate 44 (see FIG. 5A described later). The cylindrical brushes 42 and 43 are provided on the outer peripheral surfaces of the brush bases 45 and 46. The density of the cylindrical brushes 42, 43 is greater than the density of the cleaning brush 41. Further, the height (length) from the base body 44 to the outermost portions of the cylindrical brushes 42 and 43 is larger than the height (length) from the base body 44 to the outermost portion of the cleaning brush 41.

  Thus, the cleaning brush 41 of the rotary cleaning body 40 can be rotated to improve the performance of removing dust from the vacuum cleaner 1. In addition, the self-propelledness (operability) of the vacuum cleaner 1 is improved by the rotation of the cylindrical brushes 42, 43 of the rotary cleaning body 40.

<Rotary cleaning body storage room>
Next, the shape of the rotary cleaning body storage chamber 30 will be described using FIGS. 4 to 6. FIG. 4 is a bottom view of the suction body 4 with the rotating body 40 removed. Fig.5 (a) is the sectional view on the AA line of FIG. 3, FIG.5 (b) is the BB sectional drawing of FIG. FIG. 6 is a partially enlarged cross-sectional view of the vicinity of the lower surface side of the suction body 4 in the cross-sectional view taken along the line C-C in FIG. 3.

  As shown in FIG. 4, the top surface of the rotation cleaning body storage chamber 30 is formed by the storage chamber top surface 31 at the center in the left-right direction of the rotation cleaning body storage chamber 30 and the brush relief portions 32 and 33 at both left and right ends. It is done. Further, a suction port 34 is provided at the center of the rotational cleaning body storage chamber 30 in the left-right direction from the rear wall (backward direction side) wall surface of the rotational cleaning body storage chamber 30 to the top surface of the rotational cleaning body storage chamber 30. ing. The suction port 34 communicates with the flow path pipe 13A (see FIG. 2) via a hose 13D (see FIG. 6). Further, dust collection ribs 35 to 38 are provided from the rear wall surface (backward direction side) wall surface of the rotation cleaning body storage chamber 30 to the storage chamber top surface 31 of the rotation cleaning body storage chamber 30.

  As shown in FIG. 5 (b), the brush reliefs 32 and 33 at the left and right ends are provided above the top surface 31 of the central storage room. In other words, on the top surface of the rotation cleaning body storage chamber 30, the brush escape portions 32, 33 recessed from the center top surface (storage chamber top surface 31) are provided at both left and right ends. Furthermore, in other words, as shown in FIG. 5A, the central storage room top surface 31 approaches the rotary cleaning body 40 (cleaning brush 41) than the left and right top surfaces (brush escape portions 32, 33). It is provided to do. Furthermore, in other words, in the rotary cleaning body storage chamber 30, the inner diameter at both left and right ends is larger than the inner diameter at the center.

  And as shown to Fig.5 (a), the brush relief parts 32 and 33 are provided including the area | region of the top | upper surface corresponding to the cylindrical brush (self-propelled brush) 42 and 43. As shown in FIG. The storage room top surface 31 is provided to be included in the area of the top surface corresponding to the cleaning brush 41.

  Thus, by providing the brush escape portions 32, 33 at the left and right ends, a gap between the cylindrical brushes 42, 43 and the top surface (brush escape portions 32, 33) of the rotational cleaning body storage chamber 30 is maintained, and the coefficient of friction is maintained. It is possible to prevent a load from being applied to the drive motor (electric motor) 20 (see FIG. 13 described later) by contacting the high cylindrical brushes 42 and 43 with the top surface of the rotary cleaning body storage chamber 30. Thereby, the self-propelled (operability) of the vacuum cleaner 1 is improved.

  In addition, by providing the central storage room top surface 31 so as to approach the rotary cleaning body 40 (cleaning brush 41), the flow velocity of the suctioned air in the rotary cleaning body storage room 30 can be maintained high. Since the pressure can be secured, the performance for removing dust from the vacuum cleaner 1 can be improved.

  As shown in FIG. 4, when viewed from the lower surface side of the suction body 4, the dust collection ribs 35 to 38 have a front side (forward direction side) at the center in the left-right direction than a back side (backward direction side). It is provided obliquely so as to face. Further, as shown in FIG. 6, the shape of the dust collection rib 37 (the same applies to 35, 36 and 38) is formed along the shape of the rotary cleaning body 40 when viewed in the rotational axis direction of the rotary cleaning body 40. It is done.

  Garbage on the floor is scraped up on the back side (backward direction side) of the cleaning brush 41 by the cleaning brush 41 of the rotating cleaning body 40, but the scraped debris is along the dust collection ribs 35 to 38 It can be made to suction to the suction port 34 which goes to the center side and finally provided in the center.

  Further, as shown in FIG. 4, the shapes of the brush escape portions 32 and 33 are also wider on the front side (forward direction side) than on the back side (backward direction side) when viewed from the lower surface side of the mouthpiece 4. It is desirable to form it. Thus, by forming the brush escape portions 32, 33, it is possible to prevent the accumulation of dust inside the brush escape portions 32, 33.

<Ground contact with the floor>
Next, grounding with the floor surface of the suction body 4 will be described using FIGS. 6 and 7. FIG. 7 is a side view of the suction body 4 in a state where the suction body 4 is in contact with the floor surface S. As shown in FIG.

  As shown in FIG. 6, when the suction body 4 is not in contact with the floor surface, the cylindrical brush (self-propelled brush) 42 (43) of the rotary cleaning body 40 is from the wheel 21 (22) and the rear wheel 23. It is also supposed to protrude downward. For this reason, as shown in FIG. 7, in the state where the suction body 4 is in contact with the floor surface S, the cylindrical brushes 42, 43 in contact with the floor surface S are deformed, and the cylindrical brushes 42, 43 and the floor surface The contact area with S increases. It is possible to improve the operability of the vacuum cleaner 1 by securing the self-propelled property of the vacuum cleaner 1 due to the rotation of the rotary cleaning body 40.

  On the other hand, the suction body 4 is in contact with the floor surface S at the wheels 21-23. As described above with reference to FIG. 3, the wheels 21 and 22 are disposed on the front side (forward direction side) of the rotary cleaning body 40, and the rear wheels 23 are on the rear side (retraction direction side) of the rotary cleaning body 40. It is arranged. With such a configuration, the contact area between the cylindrical brushes 42 and 43 and the floor surface S does not become too large. As a result, it is possible to prevent an increase in the load of the drive motor (electric motor) 20 (see FIG. 13 described later) that rotationally drives the rotary cleaning body 40, and to prevent excessive heat generation of the drive motor (electric motor) 20.

  Further, as shown in FIGS. 6 and 7, the height of the lower surface rear portion 29 of the suction body 4 is lower than the lower surface of the suction body 4 on the front side (forward direction side) than the fixed brush 27 Compared to the lower surface of). Further, as described above with reference to FIG. 3, the rear wheel 23 has a shape in which the central diameter is smaller than that of the left and right sides. This can prevent dust from accumulating between the fixed brush 27 and the rear wheel 23.

<Rotation of suction inlet joint>
Next, the rotation of the suction joint 13 will be described with reference to FIG. FIG. 8 is a cross-sectional view taken along the line C-C in FIG. 3, in which (a) is a state in which the suction inlet joint 13 is laid and (b) is a state in which the suction inlet joint 13 is upright.

  As shown in FIGS. 8 (a) and 8 (b), the suction joint 13 can be pivoted on a pivot shaft (not shown) in the longitudinal direction of the suction body 4. As shown in FIG.

  Further, as shown in FIG. 8B, in a state where the suction inlet joint 13 is erected, the locking surface 13E of the suction inlet joint 13 and the locking surface 11A of the upper case 11 are in contact with each other. 13 can not be turned forward.

  Here, as shown in FIG. 1 (b), in the state where the vacuum cleaner 1 is upright (the mouthpiece joint 13 is upright), the handy main body 2 which is pivoted about the pivot axis R The center of gravity G on the side) is in a forward direction relative to the rotation axis R. Further, as viewed from the lower surface side of the suction body 4, the center of gravity G is arranged in a triangle (trapezoid) connecting the wheels 21-23. Thereby, in the state which made the vacuum cleaner 1 stand up, it can be stably made to stand upright.

<Dust collection space>
Next, the dust collection space 50 will be described with reference to FIG. 9 and FIG. FIG. 9: is a front view of the suction body 4 with which the vacuum cleaner 1 which concerns on this embodiment is provided. FIG. 10 is an enlarged view of a portion D of FIG.

  As shown in FIG. 9, the dust collection space 50 is a space formed on the front side of the lower case 12 of the suction body 4, and temporarily stores dust when the suction body 4 is moved in the forward direction. It is a space. As shown in FIG. 10, when viewed from the lower surface side of the suction body 4, the dust collection space 50 has a shape such that the front side (advancing direction side) has a large bowl cut in half, It is possible to Further, as shown in FIG. 9, when the suction body 4 is viewed from the front, the front end (lower end) of the bumper 14 hangs over the dust collection space 50. This makes it difficult for the dust collected in the dust collection space 50 to escape from the dust collection space 50.

  And the intake port 51 which is a flow path which connects the dust collection space 50 and the rotation cleaning body storage chamber 30 is narrow. As a result, the flow velocity of the air flowing through the intake port 51 is increased, and the dust accumulated in the dust collection space 50 can be easily sucked into the rotary cleaning body storage chamber 30.

<LED>
FIG. 11 is a partially enlarged cross-sectional view of the vicinity of the LED guide 15 in the cross-sectional view taken along the line E-E in FIG. 9.

  An LED 16 mounted on the LED substrate 17 is provided inside the case (upper case 11 and lower case 12). The LED guide 15 is formed of a transparent resin, and the lens 15L is formed. Moreover, the center of LED16 is arrange | positioned above the center of the entrance plane of LED guide 15 (lens 15L). Further, the center of the emission surface of the LED guide 15 (lens 15L) is disposed below the center of the entrance surface of the LED guide 15 (lens 15L). Further, the upper end of the bumper 14 is formed with a slope portion 14A which is inclined so that the front side is lowered. With such a configuration, when the LED 16 emits light, the irradiation light is refracted by the lens 15 L to illuminate the front side floor surface of the suction body 4. Thereby, the cleaning state of the floor surface can be easily confirmed. Moreover, since the front side floor surface of the suction body 4 can be illuminated without arranging the LED substrate 17 obliquely, the LED substrate 17 can be formed without complication of the arrangement.

<Bearing holding member>
FIG. 12 is a bottom perspective view of the mouthpiece 4 with the bearing holding member 18 removed from the lower case 12.

  As shown in FIG. 12, the bearing 47 is sandwiched and fixed by the lower case 12 and the bearing holding member 18. The bearing 47 is inserted into the cylinder of the cylindrical base 44 of the rotary cleaning body 40 as shown in FIG. 5A, so that the rotary cleaning body 40 can rotate relative to the bearing 47. ing.

  When the lever 19 shown in FIG. 12 is operated to be pushed in, a locking member (not shown) protrudes from the hole 19A in the direction of the bearing holding member 18. The bearing holding member 18 is fixed to the lower case 12 by attaching the bearing holding member 18 to the lower case 12 and operating the lever 19. On the other hand, when the lever 19 is operated to be pulled, the bearing holding member 18 can be removed from the lower case 12 because the locking member (not shown) is retracted inside the hole 19A. Then, by removing the bearing holding member 18, the rotational cleaning body 40 can be removed from the rotational cleaning body storage chamber 30.

<Drive motor (motor) unit>
FIG. 13 is a view for explaining a unit portion of the drive motor (motor) 20, and FIG. 13 (a) is a view when the unit portion of the drive motor (motor) 20 is viewed from above; It is the FF sectional view taken on the line of FIG. 13 (a).

  The drive motor (motor) unit is provided rotatably to the drive motor (motor) 20, the fitting portion 48, the unit case 60, the small pulley 61, the large pulley 62, the belt 63, and the shaft 64. And the provided tensioner 65. In addition, an auxiliary yoke 20A is attached to the housing of the drive motor (electric motor) 20 so as to reduce the leakage of the magnetic force.

  As shown in FIG. 13 (b), when the drive motor (electric motor) 20 rotates, the small pulley 61 rotates. The rotation of the small pulley 61 is transmitted to the large pulley 62 via the belt 63. Here, by increasing the ratio of the diameters of the small pulley 61 and the large pulley 62, even a small drive motor (electric motor) 20 can output high torque. Further, by providing the tensioner 65, the contact area between the small pulley 61 and the belt 63 is increased, the contact area between the large pulley 62 and the belt 63 is increased, and slippage of the belt 63 is suppressed, thereby achieving high torque. Can be output.

  A tensioner 65 is provided to increase the speed reduction ratio of the drive motor (electric motor) 20 and the rotary cleaning body 40 in order to reduce the operation force, and to prevent tooth skipping. In this case, the speed reduction ratio is preferably 2.9 or more.

  In order to reduce the operating force, it is desirable to reduce the frictional resistance with the cleaning surface (floor surface). In order to reduce the frictional resistance with the cleaning surface, it is desirable to increase the gap between the bottom surface of the suction body 4 and the cleaning surface. In the present embodiment, the distance between the wheels 21 and 22 and the bottom surface of the suction body 4 is 2 mm or more. In other words, the distance between the cleaning surface (floor surface) and the lower case 12 is 2 mm or more. Thereby, the frictional resistance between the suction body 4 and the cleaning surface can be reduced, and the operation force can be reduced.

  The frictional resistance of the suction body 4 is preferably 18 N (forward (forward) 12 N or less) in the carpet defined by Japanese Industrial Standard "JIS C 9108". (The frictional resistance is measured by the following measurement method. One with a mechanism that gives a thrust in the same direction as the operation direction, for example, a rotating brush etc. is made rotatable (eg by removing a timing belt, etc.) Measure in accordance with the C 9108 "operating resistance test.)

  In addition to reducing the frictional resistance, it is desirable that the axial torque of the rotating brush be large in order to reduce the operating force. The axial torque of the forward path (forward) in the carpet specified in “JIS C 9108” is preferably 30 mN · m or more.

  It is desirable that the operating force in the case of achieving the effect of operating force reduction be 14 N or less according to the operating force measurement method defined in “JIS C 9108”.

  The operating force can be reduced (operability can be improved) in contact with a carpet specified in “JIS C 9108”, with an axial torque of 30 mN · m or more and a brush rotational speed of 3000 rpm or less.

  With the above configuration, the operation resistance on the forward path (forward) is lower than the operation resistance on the backward path (reverse).

  Then, when the large pulley 62 rotates, the fitting portion 48 rotates. The fitting part 48 can be fitted with the brush stand 45 side edge part of the rotation cleaning body 40, as shown to Fig.5 (a). Thereby, the rotational force of the fitting portion 48 can be transmitted to the rotary cleaning body 40.

  Further, by integrally forming the drive motor (motor) unit by the unit case 60, it is possible to transmit the rotational force of the drive motor (motor) 20 to the fitting portion 48 (rotational cleaning body 40) without loss. it can.

  In addition, although this embodiment demonstrated as what is the vacuum cleaner 1 which used the storage battery 2d, it is not restricted to this. If the above configuration and effects are provided, the power cord may be directly attached, or a vacuum cleaner provided with a cord reel and obtaining power from an outlet such as a wall may be used, or both a storage battery and a cord reel may be provided. It may be a vacuum cleaner that obtains power.

  In addition, in this embodiment, although the cylindrical brush 42 and 43 (self-propelled brush) is provided in the both ends of the cleaning brush 41, it is not this limitation. The vacuum cleaner may not be provided with the fixed brush 27 as long as the operation force is reduced.

1 Electric vacuum cleaner 2 Handy body (vacuum cleaner body)
2a Handy main body inlet pipe 2b Dust case 2c Electric blower 2d Storage battery 2e Handy handle 3 Stick handle 3a Power button 4 Suction body 5 Flow path 6 Charging stand 11 Upper case (case)
11A locking surface 12 lower case (case)
13 suction joint 13A flow passage pipe 13B suction clamp 13C suction terminal 13D hose 13E locking surface 14 bumper 14A beveled portion 15 LED guide 15L lens 16 LED
17 LED Substrate 18 Bearing Holding Member 19 Lock Lever 20 Drive Motor (Motor)
20A Auxiliary yokes 21 and 22 Wheels 23 Rear wheels 24 and 25 Brush members 26 Floor surface detection wheels 27 Fixed brushes 28 Fixed brush escape recess 29 Lower rear part 30 Rotational cleaning unit storage room 31 Storage room top surface 32, 33 Brush escape part 34 Suction port 35 to 38 Dust collection rib 40 Rotational cleaning body 41 Cleaning brush 42, 43 Cylindrical brush (self-running brush)
Reference Signs List 44 base 45, 46 brush base 47 bearing 48 fitting portion 50 dust collecting space 51 intake port 61 small pulley 62 large pulley 63 belt 64 shaft 65 tensioner G center of gravity S floor surface R rotation shaft

Claims (6)

In a vacuum cleaner comprising an electric blower and a dust case between a handle and a suction body,
The suction body is
A rotary cleaning body accommodating chamber formed under surface,
A rotary cleaning body rotatably disposed in the rotary cleaning body storage chamber;
And a motor for driving the rotating cleaning body.
The motor provides a driving force that reduces the power for operating the vacuum cleaner.
The rotating cleaning body is
A cleaning brush that is a brush that protrudes outward from the outer peripheral surface of the cylindrical substrate;
And a cylindrical brush that is a brush that is denser than the cleaning brush. In a vacuum cleaner comprising an electric blower and a dust case between a handle and a suction body,
The suction body is
A rotary cleaning unit storage chamber formed on the lower surface,
A rotary cleaning body rotatably disposed in the rotary cleaning body storage chamber;
And a motor for driving the rotating cleaning body.
The motor provides a driving force that reduces the power for operating the vacuum cleaner.
The lower surface of the rotary cleaning body is located at the lowermost portion of the suction body,
The rotating cleaning body is
A cleaning brush that is a brush that protrudes outward from the outer peripheral surface of the cylindrical substrate;
And a cylindrical brush that is a brush that is denser than the cleaning brush . The top surface of the rotation cleaning body storage room is
A brush relief provided so as to include the area of the top surface corresponding to the cylindrical brush;
A storage chamber top surface provided at a longitudinally central portion of the rotational cleaning body storage chamber;
The vacuum cleaner according to claim 1 or 2 , wherein the top surface of the storage room is formed lower than the brush relief portion . It has a rib on the storage chamber top surface of the rotation cleaning body storage room from the rear side wall surface of the rotation cleaning body storage room,
The rib is provided obliquely so as to be directed to the longitudinal central portion of the rotational cleaning body storage chamber toward the front side.
The vacuum cleaner according to claim 3, characterized in that . The brush relief portion is
The front side is wider than the back side when viewed from the lower side of the suction body
The vacuum cleaner according to claim 4 , characterized in that . The lower surface of the suction body is
Two wheels disposed apart from each other in the longitudinal direction of the rotary cleaning body storage chamber on the front side of the rotary cleaning body;
The rear wheel arrange | positioned in the longitudinal direction center of the said rotation cleaning body storage chamber on the back side rather than the said rotation cleaning body, It has any one of the Claims 1 to 7 characterized by the above-mentioned. Vacuum cleaner.

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