JP6871961B2 - Vacuum cleaner - Google Patents

Description

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

As a vacuum cleaner for cleaning the floor surface, a floor moving type (also called "canister type") vacuum cleaner and a broom type (also called "vertical type" or "stick type") vacuum cleaner are known. ing.

As a mouthpiece of a floor-moving type (canister type) vacuum cleaner, Patent Document 1 (Japanese Unexamined Patent Publication No. 2009-17902) has a mouthpiece formed by attaching an upper case to a lower case having an opening on the lower surface. A vacuum cleaner including a main body, a rotary cleaning body storage chamber formed inside the mouthpiece main body, a rotary cleaning body rotatably arranged in the rotary cleaning body storage chamber, and an electric motor for driving the rotary cleaning body. Disclosed is a mouthpiece of an electric vacuum cleaner characterized in that the rotary cleaning body is provided with a cleaning member arranged in the left-right direction and a cylindrical brush arranged in the circumferential direction. ing.

Japanese Unexamined Patent Publication No. 2009-17902

By the way, the broom type (stick type) vacuum cleaner has a shape in which the handle and the floor suction tool (mouthpiece) are used integrally with the main body, and the mouthpiece is compared with the floor moving type (canister type) vacuum cleaner. A large operating force is required to move the body on the surface to be cleaned (floor surface). Therefore, a broom-shaped (stick-type) vacuum cleaner with good operability is required.

Therefore, an object of the present invention is to provide a vacuum cleaner having good operability.

In order to solve such a problem, the vacuum cleaner according to the present invention includes a handy main body including a handy handle held by the user, a handy main body inlet pipe, a dust case, an electric blower, and a storage battery. , A stick handle that the user holds when cleaning as a stick-type vacuum cleaner, which is different from the handy handle provided above the handy body, and the handy body and the stick handle are integrated. The mouthpiece is provided with a mouthpiece clamp for fixing the handy main body inlet pipe so as to communicate with the handy main body inlet pipe, and a mouthpiece having a mouthpiece joint having a conductive mouthpiece terminal, and the mouthpiece is provided on a case and a lower surface. A rotary sweeper storage chamber to be formed, a rotary cleaner rotatably arranged in the rotary cleaner storage chamber, and an electric motor for driving the rotary cleaner are provided, and the electric motor includes the electric vacuum cleaner. The rotary cleaner is a cleaning brush that projects outward from the outer peripheral surface of the tubular substrate and a cylinder that is denser than the cleaning brush by giving a driving force that reduces the force for operation. The top surface of the storage chamber, which has a shape brush and is provided in the center in the left-right direction of the rotary cleaning body storage chamber, is formed lower than the left and right in the left-right direction of the rotary cleaning body storage chamber, and has a tubular shape. anda brush relief portion provided include regions of the top surface corresponding to a brush, the storage room ceiling is characterized and the Turkey formed lower than the brush clearance portion.

According to the present invention, it is possible to provide a vacuum cleaner having good operability. Further, by driving the rotary cleaning body by the electric motor, it is possible to provide an electric vacuum cleaner having improved dust-removing performance.

(A) is a perspective view of the vacuum cleaner according to the present embodiment, and (b) is a sectional view of the vacuum cleaner according to the present embodiment. It is a perspective view of the mouthpiece provided in the vacuum cleaner which concerns on this embodiment. It is a bottom view of the mouthpiece provided in the vacuum cleaner which concerns on this embodiment. It is the bottom view of the mouthpiece body in the state which the rotating body is removed. (A) is a cross-sectional view taken along the line AA of FIG. 3, and (b) is a cross-sectional view taken along the line BB of FIG. It is a partially enlarged sectional view which enlarged the vicinity of the lower surface side of the mouthpiece body in the cross-sectional view taken along line CC of FIG. It is a side view of the mouthpiece body in the state where the mouthpiece body is in contact with a floor surface. FIG. 3 is a cross-sectional view taken along the line CC of FIG. 3, where FIG. 3A is a state in which the mouthpiece joint is laid down, and FIG. 3B is a state in which the mouthpiece joint is upright. It is a front view of the mouthpiece provided in the vacuum cleaner which concerns on this embodiment. FIG. 3 is an enlarged view of part D in FIG. 9 is a partially enlarged cross-sectional view of the vicinity of the LED guide in the cross-sectional view taken along the line EE of FIG. It is the lower side perspective view of the mouthpiece body in the state which the bearing holding member is removed from the lower case. It is a figure explaining the unit part of the 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 line sectional view of (a). Is.

Hereinafter, embodiments 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 figure, the same reference numerals are given to common parts, and duplicate description will be omitted.

≪Vacuum cleaner≫
First, the vacuum cleaner 1 according to the present embodiment will be described with reference to FIG. FIG. 1A is a perspective view of the vacuum cleaner 1 according to the present embodiment, and FIG. 1B is a cross-sectional view of the vacuum cleaner 1 according to the present embodiment. Note that FIG. 1A illustrates a state in which the vacuum cleaner 1 is placed on a charging stand 6 for fixing the vacuum cleaner 1 and charging the storage battery 2d (see FIG. 1B) described later. There is. Further, FIG. 1B illustrates a state in which the vacuum cleaner 1 is self-supporting.

As shown in FIG. 1A, the vacuum cleaner 1 according to the present embodiment is a broom-shaped (also referred to as "vertical" or "stick-type") vacuum cleaner, and has a handy body 2 and a stick handle. 3 and the mouthpiece 4 are provided as one.

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. Further, the handy main body 2 is provided with a handy handle 2e that the user holds when transporting the vacuum cleaner 1. The reference numeral G in FIG. 1B indicates the center of gravity of the vacuum cleaner 1.

The stick handle 3 is a handle that the user grips 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 vacuum cleaner 1 (electric blower 2c).

The mouthpiece 4 is attached to the handy body inlet pipe 2a of the handy body 2. Then, a flow path 5 through which air can flow to the mouthpiece 4, the handy main body inlet pipe 2a, the dust case 2b, and the electric blower 2c is formed.

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

≪Mouthpiece 4≫
Next, the mouthpiece 4 included in the vacuum cleaner 1 according to the present embodiment will be described with reference to FIGS. 2 to 13. In the following description, the rotary cleaning body storage chamber 30 (see FIG. 3), which will be described later, has a state in which the longitudinal direction of the mouthpiece 4 is the left-right direction of the mouthpiece 4 and the mouthpiece 4 is placed on a horizontal floor surface. The formed side is the lower surface side, the side opposite to the side where the rotary cleaning body storage chamber 30 (see FIG. 3) to be described later is formed is the upper surface side, and the forward side of the mouthpiece 4 is the front side, and the mouthpiece 4 The backward side of is the back side.

FIG. 2 is a perspective view of a mouthpiece 4 included in the vacuum cleaner 1 according to the present embodiment.
As shown in FIG. 2, the mouthpiece 4 includes an upper case 11, a lower case 12, a mouthpiece joint 13, a bumper 14, and an LED guide 15.

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

FIG. 3 is a bottom view of the mouthpiece 4 included in the vacuum cleaner 1 according to the present embodiment.
As shown in FIG. 3, on the lower surface of the mouthpiece 4 (lower case 12), wheels 21 and 22, rear wheels 23, brush members 24 and 25, floor surface detection wheels 26, and fixed brush 27 are provided. Is provided. Further, on the lower surface of the mouthpiece 4 (lower case 12), a fixed brush relief recess 28, a lower surface rear portion 29, and a rotary cleaning body storage chamber 30 are formed. Further, a rotary cleaning body 40 is arranged in the rotary cleaning body storage chamber 30. Further, as will be described later with reference to FIGS. 9 and 10, a dust collecting space 50 is formed on the front side of the lower case 12 of the mouthpiece 4. Further, as will be described later with reference to FIG. 12, a removable bearing holding member 18 is attached.

The wheels 21 and 22 are arranged on the left and right sides of the mouthpiece 4, and are arranged on the front side (forward direction side) of the rotary cleaning body 40 (rotary cleaning body storage chamber 30). The rear wheel 23 is arranged at the center of the mouthpiece 4 in the left-right direction, and is arranged on the back side (backward direction side) of the rotary cleaning body 40. The rear wheel (wheel) 23 has a shape in which the diameter at the center is smaller than that on both the left and right sides. Further, when viewed from the lower surface side of the mouthpiece 4, the center of the rotary cleaning body 40 (rotary cleaning body storage chamber 30) is arranged in a triangle (trapezoid) connecting the wheels 21 to 23.

Position where the lower surface of the lower case 12 of the mouthpiece 4 comes into contact with the floor surface in a state where the wheels 21 and 23 are in contact with the floor surface and the wheels 22 are lifted (a state in which the vacuum cleaner 1 is tilted diagonally rearward to the left). Is provided with a brush member 24. Further, in a state where the wheels 22 and 23 are in contact with the floor surface and the wheels 21 are raised (a state in which the vacuum cleaner 1 is tilted diagonally rearward to the right), the lower surface of the lower case 12 of the mouthpiece 4 comes into contact with the floor surface. The brush member 25 electric vacuum cleaner 1 is provided at the position where the brush member 25 is used. Here, the mouthpiece 4 basically comes into contact with the floor surface by the wheels 21 to 23 to support the weight of the vacuum cleaner 1 (see FIG. 1). Therefore, the brush members 24 and 25 do not always come into 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 and prevent the floor surface from being damaged even when the mouthpiece 4 is in an unstable posture.

The floor surface detection wheel 26 is for detecting whether or not the mouthpiece 4 is installed on the floor surface. When the floor surface detection wheel 26 comes into contact with the floor surface, the automatic return type detection switch (not shown) provided in the case (upper case 11, lower case 12) is pushed from the mouthpiece terminal 13C (see FIG. 2). A power supply line (not shown) is connected to a drive motor (motor) 20 (see FIG. 13 to be described later) that rotationally drives the rotary cleaning body 40. On the other hand, when the floor surface detection wheel 26 is separated from the floor surface, the detection switch (not shown) is restored and the suction terminal 13C (see FIG. 2) is transferred to the drive motor (motor) 20 (see FIG. 13 to be described later). The power supply line (not shown) is cut off. The drive motor (motor) 20 provides an operating force that reduces the force for operating the vacuum cleaner 1. Thereby, it is possible to provide a vacuum cleaner having good operability.

The fixed brush 27 is arranged on the back side (backward direction side) of the rotary cleaning body storage chamber 30 in which the rotary cleaning body 40 is arranged. The fixed brush 27 sweeps the floor surface to collect dust, and closes the space between the lower surface of the mouthpiece 4 and the floor surface on the back side (backward direction side) of the rotary cleaning body storage chamber 30. Further, as described above, the fixed brush relief recess 28 is formed on the back surface side (backward 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 on the lowermost surface of the mouthpiece 4. As a result, the rotary cleaning body 40 comes into contact with the floor surface, and the rotary cleaning body 40 rotated by the drive motor (motor) 20 reduces the force for operating the electric vacuum cleaner 1, so that the electric vacuum cleaner with good operability can be obtained. Can be provided.

The rotary cleaning body storage chamber 30 is a space that communicates with the flow path pipe 13A (see FIG. 2), and is a space in which dust on the floor surface is sucked together with air. Further, in the rotary cleaning body storage chamber 30, the rotary cleaning body 40 is rotatably arranged.

The rotary cleaning body 40 includes a cleaning brush 41 and tubular brushes (self-propelled brushes) 42 and 43 provided on the left and right ends of the cleaning brush 41, and includes a drive motor (motor) 20 (FIG. 13 described later). (See), the mouthpiece 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 (diameterally) from the outer peripheral surface of the tubular substrate 44 (see FIG. 5A described later). In FIG. 3, the cleaning brush 41 is provided so as to protrude in a spiral shape, but the present invention is not limited to this.

At both ends of the tubular base 44 (see FIG. 5 (a) described later), tubular brush stands 45, 46 (see FIG. 5 (a) described later) having a diameter larger than that of the base 44 are provided. , Cylindrical brushes 42, 43 are provided on the outer peripheral surfaces of the brush stands 45, 46. The densities of the tubular brushes 42 and 43 are higher than the densities of the cleaning brush 41. Further, the height (length) from the base 44 to the outermost side of the tubular brushes 42 and 43 is larger than the height (length) from the base plate 44 to the outermost side of the cleaning brush 41.

By rotating the cleaning brush 41 of the rotary cleaning body 40 in this way, the performance of removing dust from the electric vacuum cleaner 1 can be improved. In addition, the rotation of the tubular brushes 42 and 43 of the rotary cleaning body 40 improves the self-propelling property (operability) of the electric vacuum cleaner 1.

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

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

As shown in FIG. 5B, the brush relief portions 32 and 33 at both the left and right ends are provided above the top surface 31 of the central storage chamber. In other words, the top surface of the rotary cleaning body storage chamber 30 is provided with brush relief portions 32 and 33 recessed from the central top surface (storage chamber top surface 31) at both left and right ends. In other words, as shown in FIG. 5A, the central storage chamber top surface 31 is closer to the rotary cleaning body 40 (cleaning brush 41) than the left and right top surfaces (brush relief portions 32, 33). It is provided to do so. In other words, in the rotary cleaning body storage chamber 30, the inner diameters on both the left and right ends are larger than the inner diameter on the center side.

Then, as shown in FIG. 5A, the brush relief portions 32 and 33 are provided including the area of the top surface corresponding to the tubular brushes (self-propelled brushes) 42 and 43. Further, the storage chamber top surface 31 is provided so as to be included in the area of the top surface corresponding to the cleaning brush 41.

By providing the brush relief portions 32, 33 at both the left and right ends in this way, the gap between the tubular brushes 42, 43 and the top surface (brush relief portions 32, 33) of the rotary cleaning body storage chamber 30 is maintained, and the friction coefficient. It is possible to prevent the high tubular brushes 42 and 43 from coming into contact with the top surface of the rotary cleaning body storage chamber 30 and applying a load to the drive motor (motor) 20 (see FIG. 13 to be described later). As a result, the self-propellability (operability) of the vacuum cleaner 1 is improved.

Further, by providing the top surface 31 of the central storage chamber so as to be close to the rotary cleaner 40 (cleaning brush 41), the flow velocity of the air sucked in the rotary cleaner storage chamber 30 can be kept high, and the movement can be maintained. Since the pressure can be secured, the performance of removing dust of the vacuum cleaner 1 can be improved.

As shown in FIG. 4, when viewed from the lower surface side of the mouthpiece 4, the dust collecting ribs 35 to 38 are centered in the left-right direction on the front side (forward direction side) rather than on the back side (backward direction side). It is installed diagonally so that it faces. Further, as shown in FIG. 6, the shape of the dust collecting rib 37 (the same applies to 35, 36, and 38) is formed so as to follow the shape of the rotary cleaning body 40 when viewed in the rotation axis direction of the rotary cleaning body 40. Has been done.

The dust on the floor surface is scraped up by the cleaning brush 41 of the rotating rotary cleaning body 40 on the back side (retracting direction side) of the cleaning brush 41, but the scraped dust is scraped up along the dust collecting ribs 35 to 38. It can be sucked toward the center side and finally through the suction port 34 provided in the center.

Further, as shown in FIG. 4, the shapes of the brush relief 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 in. By forming the brush relief portions 32 and 33 in this way, it is possible to prevent dust from accumulating inside the brush relief portions 32 and 33.

<Grounding with the floor>
Next, the grounding of the mouthpiece 4 with the floor surface will be described with reference to FIGS. 6 and 7. FIG. 7 is a side view of the mouthpiece 4 in a state where the mouthpiece 4 is in contact with the floor surface S.

As shown in FIG. 6, when the mouthpiece 4 is not in contact with the floor surface, the tubular brush (self-propelled brush) 42 (43) of the rotary cleaning body 40 is more than the wheel 21 (22) and the rear wheel 23. Is also designed to protrude downward. Therefore, as shown in FIG. 7, when the mouthpiece 4 is in contact with the floor surface S, the tubular brushes 42 and 43 in contact with the floor surface S are deformed, and the tubular brushes 42 and 43 and the floor surface are deformed. The contact area with S becomes large. It is possible to secure the self-propelling property of the electric vacuum cleaner 1 by rotating the rotary cleaning body 40 and improve the operability of the electric vacuum cleaner 1.

On the other hand, the mouthpiece 4 touches the floor surface S with the wheels 21 to 23. Then, as described above in FIG. 3, the wheels 21 and 22 are arranged on the front side (forward direction side) of the rotary cleaning body 40, and the rear wheels 23 are on the rear side (reverse direction side) of the rotary cleaning body 40. Have been placed. With such a configuration, the contact area between the tubular brushes 42 and 43 and the floor surface S is not excessively widened. As a result, it is possible to prevent an increase in the load of the drive motor (motor) 20 (see FIG. 13 described later) that rotationally drives the rotary cleaning body 40, and prevent excessive heat generation of the drive motor (motor) 20.

Further, as shown in FIGS. 6 and 7, the height of the lower surface rear portion 29 of the mouthpiece 4 is the lower surface of the mouthpiece 4 on the front side (forward direction side) of the fixed brush 27 (around the rotary cleaning body storage chamber 30). Compared to the lower surface of), it is one step higher. Further, as described above in FIG. 3, the rear wheel 23 has a shape in which the diameter at the center is smaller than that on both the left and right sides. As a result, it is possible to prevent dust from accumulating between the fixed brush 27 and the rear wheel 23.

<Rotation of mouthpiece joint>
Next, the rotation of the mouthpiece joint 13 will be described with reference to FIG. 8A and 8B are cross-sectional views taken along the line CC of FIG. 3, where FIG. 8A is a state in which the mouthpiece joint 13 is laid down, and FIG. 8B is a state in which the mouthpiece joint 13 is upright.

As shown in FIGS. 8A and 8B, the mouthpiece joint 13 can be rotated by a rotation axis (not shown) in the longitudinal direction of the mouthpiece 4.

Further, as shown in FIG. 8B, when the mouthpiece joint 13 is upright, the locking surface 13E of the mouthpiece joint 13 and the locking surface 11A of the upper case 11 are in contact with each other, and the mouthpiece joint is further upright. 13 cannot be rotated in the forward direction.

Here, as shown in FIG. 1 (b), in a state where the vacuum cleaner 1 is upright (a state where the mouthpiece joint 13 is upright), the vacuum cleaner 1 (handy body 2 that rotates on the rotation shaft R) The center of gravity G on the side) is oriented forward of the rotation axis R. Further, the center of gravity G is arranged in a triangle (trapezoid) connecting the wheels 21 to 23 when viewed from the lower surface side of the mouthpiece 4. As a result, the vacuum cleaner 1 can be stably upright in an upright state.

<Dust collection space>
Next, the dust collecting space 50 will be described with reference to FIGS. 9 and 10. FIG. 9 is a front view of the mouthpiece 4 included in the vacuum cleaner 1 according to the present embodiment. FIG. 10 is an enlarged view of part D in FIG.

As shown in FIG. 9, the dust collecting space 50 is a space formed on the front side of the lower case 12 of the mouthpiece 4, and when the mouthpiece 4 is moved in the forward direction, dust is temporarily collected. It is a space. As shown in FIG. 10, when viewed from the lower surface side of the mouthpiece 4, the dust collecting space 50 has a shape like a bowl having a wide front side (forward direction side) cut in half, and collects dust. Can be done. Further, as shown in FIG. 9, when the mouthpiece 4 is viewed from the front, the tip (lower end) of the bumper 14 spans the dust collecting space 50. This makes it difficult for the dust collected in the dust collecting space 50 to escape from the dust collecting space 50.

The intake port 51, which is a flow path connecting the dust collecting space 50 and the rotary cleaning body storage chamber 30, is narrowed. As a result, the flow velocity of the air flowing through the intake port 51 is increased, and the dust collected in the dust collecting 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 EE of FIG.

Inside the case (upper case 11, lower case 12), an LED 16 mounted on the LED substrate 17 is provided. The LED guide 15 is made of a transparent resin, and the lens 15L is formed. Further, the center of the LED 16 is arranged above the center of the incident surface of the LED guide 15 (lens 15L). Further, the center of the exit surface of the LED guide 15 (lens 15L) is arranged 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 that 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 15L and illuminates the floor surface on the front side of the mouthpiece 4. As a result, the cleaning state of the floor surface can be easily confirmed. Further, since the front floor surface of the mouthpiece 4 can be illuminated without arranging the LED substrate 17 diagonally, the arrangement of the LED substrate 17 can be made without being complicated.

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

As shown in FIG. 12, the bearing 47 is sandwiched and fixed between the lower case 12 and the bearing holding member 18. As shown in FIG. 5A, the bearing 47 is inserted into the cylinder of the tubular base 44 of the rotary cleaning body 40, and the rotary cleaning body 40 can rotate with respect to the bearing 47. ing.

When the lever 19 shown in FIG. 12 is pushed in, a locking member (not shown) protrudes from the hole 19A in the direction of the bearing holding member 18. By attaching the bearing holding member 18 to the lower case 12 and operating the lever 19, the bearing holding member 18 can be fixed to the lower case 12. On the other hand, when the lever 19 is operated by pulling, the locking member (not shown) retracts into the hole 19A, so that the bearing holding member 18 can be removed from the lower case 12. Then, by removing the bearing holding member 18, the rotary cleaning body 40 can be removed from the rotary cleaning body storage chamber 30.

<Drive motor (motor) unit>
FIG. 13 is a diagram illustrating a unit portion of the drive motor (motor) 20, FIG. 13 (a) is a view of the unit portion of the drive motor (motor) 20 from above, and FIG. 13 (b) is a view. 13 (a) is a cross-sectional view taken along the line FF.

The drive motor (motor) unit is rotatably provided with respect 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. It is equipped with a tensioner 65. Further, an auxiliary yoke 20A is attached to the housing of the drive motor (motor) 20 so as to reduce leakage of magnetic force.

As shown in FIG. 13B, when the drive motor (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, the ratio of the diameters of the small pulley 61 and the large pulley 62 is increased so that even a small drive motor (motor) 20 can output a high torque. Further, by providing the tensioner 65, the contact area between the small pulley 61 and the belt 63 is widened, the contact area between the large pulley 62 and the belt 63 is widened, the belt 63 is suppressed from slipping, and a high torque is obtained. Can be output.

A tensioner 65 is provided to increase the reduction ratio of the drive motor (motor) 20 and the rotary cleaning body 40 in order to reduce the operating force, and to prevent tooth skipping. In this case, the 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 mouthpiece 4 and the cleaning surface. In the present embodiment, the distance between the wheels 21 and 22 and the bottom surface of the mouthpiece 4 is set to 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. As a result, the frictional resistance between the mouthpiece 4 and the cleaning surface can be reduced, and the operating force can be reduced.

The frictional resistance of the mouthpiece 4 is preferably 18N (12N for the outward route (forward)) or less for the carpet specified in the Japanese Industrial Standards "JIS C 9108". (The frictional resistance is measured by the following measuring method. Those having a mechanism for applying thrust in the same direction as the operating direction, for example, a rotating brush or the like is made rotatable (for example, by removing the timing belt), and "JIS Measure according to the operation resistance test of "C 9108".)

In order to reduce the operating force, it is desirable that the shaft torque of the rotating brush is large in addition to lowering the frictional resistance. It is desirable that the axial torque of the outward route (forward) on the carpet specified in "JIS C 9108" is 30 mN · m or more.

It is desirable that the operating force when the effect of reducing the operating force is achieved is 14 N or less according to the operating force measuring method specified in "JIS C 9108".

When the carpet is in contact with the carpet specified in "JIS C 9108", the shaft torque is 30 mN · m or more, and the brush rotation speed is 3000 rpm or less, the operating force can be reduced (operability is improved).

With the above configuration, the operation resistance of the outward route (forward) is lower than the operation resistance of the return route (reverse).

Then, as the large pulley 62 rotates, the fitting portion 48 rotates. As shown in FIG. 5A, the fitting portion 48 can be fitted with the end portion of the rotary cleaning body 40 on the brush base 45 side. As a result, the rotational force of the fitting portion 48 can be transmitted to the rotary cleaning body 40.

Further, since the drive motor (motor) unit is integrally formed by the unit case 60, the rotational force of the drive motor (motor) 20 can be transmitted to the fitting portion 48 (rotary cleaning body 40) without loss. it can.

In the present embodiment, the vacuum cleaner 1 using the storage battery 2d has been described, but the present embodiment is not limited to this. If the above configuration and effects are provided, a power cord may be directly attached, a cord reel may be provided, and a vacuum cleaner that obtains power from an outlet such as a wall may be used, or both a storage battery and a cord reel may be provided depending on the situation. It may be a vacuum cleaner that obtains electric power.

In the present embodiment, tubular brushes 42 and 43 (self-propelled brushes) are provided at both ends of the cleaning brush 41, but this is not the case. An electric vacuum cleaner that does not have a fixed brush 27 may be used as long as it has the effect of reducing the operating force.

1 Electric vacuum cleaner 2 Handy body (vacuum cleaner body)
2a Handy body inlet pipe 2b Dust case 2c Electric blower 2d Storage battery 2e Handy handle 3 Stick handle 3a Power button 4 Mouthpiece 5 Flow path 6 Charging stand 11 Upper case (case)
11A Locking surface 12 Lower case (case)
13 Mouthpiece joint 13A Flow path tube 13B Mouthpiece clamp 13C Mouthpiece terminal 13D Hose 13E Locking surface 14 Bumper 14A Slope 15 LED guide 15L Lens 16 LED
17 LED board 18 Bearing holding member 19 Lock lever 20 Drive motor (motor)
20A Auxiliary yoke 21,22 Wheels 23 Rear wheels 24,25 Brush member 26 Floor surface detection wheel 27 Fixed brush 28 Fixed brush relief recess 29 Lower surface rear part 30 Rotating cleaning body Storage room 31 Storage room Top surface 32, 33 Brush relief part 34 Suction port 35-38 Dust collection rib 40 Rotating cleaning body 41 Cleaning brush 42,43 Cylindrical brush (self-propelled brush)
44 Hypokeimenon 45, 46 Brush stand 47 Bearing 48 Fitting part 50 Dust collection space 51 Intake port 61 Small pulley 62 Large pulley 63 Belt 64 Shaft 65 Tensioner G Center of gravity S Floor surface R Rotating shaft

Claims (7)

A handy body provided with a handy handle held by the user, a handy body inlet pipe, a dust case, an electric blower, and a storage battery.
A stick handle that is gripped by the user when cleaning as a stick-type vacuum cleaner, which is different from the handy handle provided above the handy body.
A mouthpiece clamp for fixing the handy body and the stick handle so as to communicate with the handy body inlet pipe in a state of being integrated, and a mouthpiece having a mouthpiece joint having a conductive mouthpiece terminal. Prepare,
The mouthpiece includes a case, a rotary cleaning body storage chamber formed on the lower surface, a rotary cleaning body rotatably arranged in the rotary cleaning body storage chamber, and an electric motor for driving the rotary cleaning body. ,
The motor provides a driving force that reduces the force for operating the vacuum cleaner.
The rotary cleaning body has a cleaning brush which is a brush protruding outward from the outer peripheral surface of a tubular substrate, and a tubular brush which is a brush denser than the cleaning brush.
The top surface of the storage chamber provided at the center of the rotary cleaning body storage chamber in the left-right direction is formed lower than the left and right sides of the rotary cleaning body storage chamber in the left-right direction, and is a region of the top surface corresponding to the tubular brush. Has a brush relief part, which is provided including
A vacuum cleaner characterized in that the top surface of the storage chamber is formed lower than the brush relief portion. The electric vacuum cleaner according to claim 1, wherein the lower surface of the rotary cleaning body is located at the lowermost portion of the mouthpiece. A rib is provided from the back side wall surface of the rotary cleaning body storage chamber to the top surface of the storage chamber of the rotary cleaning body storage chamber.
The vacuum cleaner according to claim 1, wherein the rib is provided diagonally toward the front side toward the central portion in the longitudinal direction of the rotary cleaning body storage chamber. The brush escape portion is
The vacuum cleaner according to claim 1, wherein the front side is wider than the back side when viewed from the lower surface side of the mouthpiece. On the lower surface of the mouthpiece,
Two wheels arranged on the front side of the rotary cleaning body and separated from each other in the left-right direction of the rotary cleaning body storage chamber,
The method according to any one of claims 1 to 4 , wherein the rotary cleaning body has a rear wheel arranged at the center in the left-right direction of the rotating cleaning body storage chamber on the back side of the rotary cleaning body. Electric vacuum cleaner. The vacuum cleaner according to any one of claims 1 to 5 , wherein the gap between the lowermost surface of the mouthpiece and the lowermost surface of the case constituting the mouthpiece is 2 mm or more. .. The motor is characterized in that the rotary cleaner comes into contact with a carpet specified in JIS C 9108 and gives a driving force having a shaft torque of 30 mN · m or more and a brush rotation speed of 3000 rpm or less. The vacuum cleaner according to any one of 1 to 6.

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