JP2015156884A - vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner having good operability.SOLUTION: In a vacuum cleaner comprising an electric air blower and a dust case between a handle and a suction port body, the suction port body comprises an electric motor and a detecting switch part for detecting that the suction port body has been placed on a surface to be cleaned. The electric motor is arranged on one side in a longitudinal direction of the suction port body, and the detecting switch part is arranged on the another side in the longitudinal direction of the suction port body.

Description

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

  As a vacuum cleaner for cleaning the floor surface, a floor moving type (also referred to as “canister type”) vacuum cleaner and a broom type (also referred to as “vertical type” or “stick type”) vacuum cleaner are known. ing.

  As a mouthpiece, Patent Document 1 (Japanese Patent No. 4079788) describes a mouthpiece joint attached to a substantially center of the mouthpiece so as to be pivotable in the front-rear direction via a rotary tube, and the mouthpiece joint in an upright state. It has a locking mechanism for locking the rotary tube and the suction port body, a motor, a circuit board, and a lead wire wired to the circuit board, and the motor and the locking mechanism are arranged on one end side. There is described a mouthpiece of a vacuum cleaner, which is arranged at the other end of the circuit board.

Japanese Patent No. 4079788

  By the way, a broom-type (stick type) vacuum cleaner is a shape that uses a handle and a floor suction tool (suction body) integrally with the main body, and has a suction mouth compared to a 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). For this reason, a broom (stick type) vacuum cleaner with good operability is required.

  Then, this invention makes it a subject to provide a vacuum cleaner with good weight balance with respect to the longitudinal direction of a suction body, and favorable operativity.

  In order to solve such a problem, a vacuum cleaner according to the present invention includes an electric blower and a dust case between a handle and a mouthpiece, wherein the mouthpiece includes the motor and the mouthpiece. A detection switch part for detecting that the body is installed on the cleaning surface, and the electric motor is disposed on one side in the longitudinal direction of the mouthpiece, and the detection switch part is in the longitudinal direction of the mouthpiece. It arrange | positions at the other side of this.

  ADVANTAGE OF THE INVENTION According to this invention, a weight cleaner is good with respect to the longitudinal direction of a suction body, and a vacuum cleaner with good operativity can be provided. Furthermore, when the rotary cleaning body is driven by the electric motor, it is possible to provide an electric vacuum cleaner with improved performance for collecting dust.

(A) is a perspective view of the vacuum cleaner concerning this embodiment, and (b) is a sectional view of the vacuum cleaner concerning this embodiment. It is a perspective view of the mouthpiece with which the vacuum cleaner concerning this embodiment is provided. It is a bottom view of the suction mouth with which the vacuum cleaner concerning this embodiment is provided. It is a bottom view of a mouthpiece in the state where a rotary cleaning body was removed. (A) is the sectional view on the AA line of FIG. 3, (b) is the sectional view on the BB line of FIG. It is the elements on larger scale which expanded the lower surface side vicinity of a suction mouth among CC sectional view taken on the line of FIG. It is a side view of the mouthpiece in the state which made the mouthpiece contact the floor surface. It is CC sectional view taken on the line of FIG. 3, (a) is the state which laid the inlet joint, (b) is the state which made the inlet joint upright. It is a perspective view of a mouthpiece in the state where an upper case was removed. It is a side view of a mouthpiece in the state where an upper case was removed, (a) is in the state where the mouthpiece joint was laid down, and (b) is in the state where the mouthpiece joint was made upright. It is a top view which shows the state which moved the suction joint along the 2nd movable axis in the state which laid the suction joint of the suction body. It is a front view of the mouthpiece with which the vacuum cleaner concerning this embodiment is provided. It is the D section enlarged view of FIG. It is the elements on larger scale which expanded the vicinity of an LED guide among the EE sectional drawings of FIG. It is a lower surface side perspective view of a mouthpiece in the state where a bearing holding member was removed from a lower case. It is a figure explaining the unit part of a drive motor (electric motor), (a) is the figure which looked at the unit part of the drive motor (electric motor) from the top, (b) is the FF sectional view taken on the line of (a). It is. It is a top view of a mouthpiece in the state where an upper case was removed. It is the FF sectional view taken on the line of FIG. It is a top view of a mouthpiece in the state where the upper case explaining the flow of cooling air was removed. It is the GG sectional view taken on the line of FIG. It is an enlarged view of a floor surface detection switch part.

  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 figure, common portions are denoted by the same reference numerals, and redundant description is omitted.

≪Vacuum cleaner≫
First, the 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. FIG. 1A shows a state where the vacuum cleaner 1 is mounted on a charging stand 6 that fixes the vacuum cleaner 1 and charges a storage battery 2d (see FIG. 1B) described later. Yes. Moreover, in FIG.1 (b), the state by which the vacuum cleaner 1 became independent is shown in figure.

  As shown in FIG. 1A, a vacuum cleaner 1 according to this embodiment is a broom-type (also referred to as “vertical type” or “stick type”) vacuum cleaner, and includes a handy main body 2 and a stick handle. 3 and the mouthpiece 4 are provided integrally.

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

  The stick handle 3 is a handle that is gripped by the user when cleaning is performed using the electric vacuum cleaner 1, and is provided above the handy main body 2. 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 mouthpiece 4 is attached to the handy main body inlet pipe 2 a of the handy main body 2. And the flow path 5 in 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 vacuum cleaner 1 configured as described above, when the user turns on the power button 3a, the electric blower 2c is operated by the power supplied from the storage battery 2d to generate negative pressure. With this negative pressure, dust (dust) is sucked together with air from the suction body 4, 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 has been removed is sucked into the electric blower 2c and exhausted outside the vacuum cleaner 1.

≪Mouthpiece 4≫
Next, the mouthpiece 4 provided in the vacuum cleaner 1 according to the present embodiment will be described with reference to FIGS. 2 to 16. In the following description, the rotary cleaning body storage chamber 30 (see FIG. 3), which will be described later, is set in a state where the longitudinal direction of the suction body 4 is the left-right direction of the suction body 4 and the suction body 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) described later is formed is the upper surface side, the forward direction side of the mouthpiece 4 is the front side, and the mouthpiece 4 The backward direction side is the back side.

FIG. 2 is a perspective view of the mouthpiece 4 provided 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 channel 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. The suction joint 13 is provided with two conductive suction terminals 13C. The storage joint 2d is connected to the handy body inlet pipe 2a of the handy main body 2 and fixed to the flow path 5 by connecting the suction joint 13 to the handy main body 2. The electric power from (refer FIG.1 (b)) is supplied.

FIG. 3 is a bottom view of the mouthpiece 4 provided in the electric 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, 22, rear wheels 23, brush members 24, 25, floor surface detection wheels 26, fixed brushes 27, Is provided. Further, a fixed brush escape recess 28, a lower surface rear portion 29, and a rotary cleaning body storage chamber 30 are formed on the lower surface of the mouthpiece 4 (lower case 12). A rotary cleaning body 40 is disposed in the rotary cleaning body storage chamber 30. As will be described later with reference to FIGS. 12 and 13, a dust collection space 50 is formed on the front side of the lower case 12 of the suction body 4. Further, as will be described later with reference to FIG. 15, a removable bearing holding member 18 is attached.

  The wheels 21 and 22 are disposed on the left and right sides of the suction body 4, and are disposed on the front side (forward direction side) of the rotational cleaning body 40 (the 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 back side (reverse direction side) of the rotary cleaning body 40. The rear wheel (wheel) 23 has a shape with a smaller center diameter compared to the left and right sides. Further, 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 when viewed from the lower surface side of the mouthpiece 4.

  Position where the lower surface of the lower case 12 of the mouthpiece 4 is in contact with the floor surface when the wheels 21 and 23 are in contact with the floor surface and the wheel 22 is lifted up (the vacuum cleaner 1 is inclined obliquely to the left). In addition, a brush member 24 is provided. In addition, in a state where the wheels 22 and 23 are in contact with the floor surface and the wheel 21 is lifted (the vacuum cleaner 1 is tilted obliquely rearward to the right), the lower surface of the lower case 12 of the mouthpiece 4 contacts the floor surface. The brush member 25 vacuum cleaner 1 is provided at a position to be used. Here, the mouthpiece 4 basically comes into contact with the floor surface with the wheels 21 to 23 and supports the weight of the electric vacuum cleaner 1 (see FIG. 1). For this reason, the brush members 24 and 25 do not always contact 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 prevents the floor surface from being damaged even when the mouthpiece 4 is in an unstable posture.

FIG. 21 is an enlarged view of the floor surface detection switch unit 66.
The detection switch unit 66 includes a detection switch 70 for turning ON / OFF the power supplied to the drive motor (electric motor) 20, the floor surface detection wheel 26 in contact with the cleaning surface, and the floor surface detection wheel 26 in contact with the cleaning surface. A rotating shaft 71 having an arm portion 72 that rotates in a direction in which the detection switch 70 is turned ON by the generated moment, and an arm portion 72 provided on the rotating shaft 71 is rotated in a direction in which the detection switch 70 is turned OFF. And a coil spring 73 that generates a force to be moved. The floor surface detection wheel 26 is for detecting whether or not the suction body 4 is installed on the floor surface (cleaning surface). When the floor detection wheel 26 comes into contact with the floor surface, an automatic return type detection switch 70 (a later-described figure) provided in the case (upper case 11 and lower case 12) by the arm portion 72 provided on the rotating shaft 71. 9) to connect a power supply line (not shown) from the suction terminal 13C (see FIG. 2) to a drive motor (electric motor) 20 (see FIG. 16 described later) for rotationally driving the rotary cleaning body 40. It has become. On the other hand, when the floor detection wheel 26 is separated from the floor, the detection switch 70 (see FIG. 9 described later) is restored by the force of the coil spring 73, and the drive motor (electric motor) 20 (from the suction terminal 13C (see FIG. 2)). A power supply line (not shown) to a later-described FIG. 16) is cut off. The drive motor (electric motor) 20 gives an operation force enough to reduce the force for operating the vacuum cleaner 1. Thereby, a vacuum cleaner with good operability can be provided. Further, by arranging the coil spring 73 and the detection switch 70 in a position overlapping the vertical direction of the suction body 4, the front-rear direction of the suction body 4 can be shortened and made compact, and as a result, a vacuum cleaner with good operability. Can be provided.

  The fixed brush 27 is disposed on the back side (reverse direction side) of the rotary cleaning body storage chamber 30 in which the rotary cleaning body 40 is disposed. The fixed brush 27 sweeps the floor surface and collects dust, and closes the space between the lower surface of the suction body 4 and the floor surface on the back side (reverse direction side) from the rotary cleaning body storage chamber 30. Further, as described above, the fixed brush escape recess 28 is formed on the back side (retreat 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 escape recess 28 of the lower case 12. The lower surface of the rotary cleaning body 40 is located on the lowermost surface of the suction body 4. Thereby, the rotary cleaning body 40 is in contact with the floor surface, and the rotary cleaning body 40 rotated by the drive motor (electric motor) 20 reduces the force for operating the electric vacuum cleaner 1, and a vacuum cleaner with good operability is obtained. Can be provided.

  The rotary 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 together with air. The rotary cleaning body 40 is rotatably disposed in the rotary cleaning body storage chamber 30.

  The rotary cleaning body 40 includes a cleaning brush 41 and cylindrical brushes (self-propelled brushes) 42 and 43 provided at both left and right ends of the cleaning brush 41, and a drive motor (electric motor) 20 (FIG. 16 to be described later). By reference), the suction body 4 is rotationally driven in a direction in which the suction body 4 moves forward (clockwise in FIG. 6 described later).

  The cleaning brush 41 is a brush made of a fiber or the like that protrudes outward (in the radial direction) from the outer peripheral surface of a cylindrical base body 44 (see FIG. 5A described later). In FIG. 3, the cleaning brush 41 is provided so as to protrude in a spiral shape, but is not limited thereto.

  At both ends of a cylindrical base 44 (see FIG. 5A described later), cylindrical brush bases 45 and 46 (see FIG. 5A described later) having a diameter larger than that of the base 44 are provided. Tubular 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 and 43 is larger than the density of the cleaning brush 41. Further, the height (length) from the base 44 to the outermost part of the cylindrical brushes 42 and 43 is larger than the height (length) from the base 44 to the outermost part of the cleaning brush 41.

  As described above, the cleaning brush 41 of the rotary cleaning body 40 rotates, whereby the performance of collecting the dust of the electric vacuum cleaner 1 can be improved. In addition, when the cylindrical brushes 42 and 43 of the rotary cleaning body 40 are rotated, the self-running property (operability) of the electric vacuum cleaner 1 is improved.

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

  As shown in FIG. 4, the top surface of the rotary cleaning body storage chamber 30 is formed by the central storage chamber top surface 31 in the left-right direction of the rotary cleaning body storage chamber 30 and the brush relief portions 32 and 33 at both left and right ends. Has been. In addition, a suction port 34 is provided in the center in the left-right direction of the rotary cleaning body storage chamber 30 from the back side (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 side (retreat 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 escape portions 32 and 33 at the left and right ends are provided above the central storage chamber top surface 31. In other words, the top surface of the rotary cleaning body storage chamber 30 is provided with brush relief portions 32 and 33 that are recessed from the center 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 escape portions 32, 33). It is provided to do. In other words, in the rotary cleaning body storage chamber 30, the inner diameters at the left and right end sides are larger than the inner diameter at the center side.

  And as shown to Fig.5 (a), the brush escape 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 so as to be included in the top surface area corresponding to the cleaning brush 41.

  Thus, by providing the brush relief portions 32 and 33 at both left and right ends, the clearance between the cylindrical brushes 42 and 43 and the top surface (brush relief portions 32 and 33) of the rotary cleaning body storage chamber 30 is maintained, and the friction coefficient is maintained. It is possible to prevent the cylindrical brushes 42 and 43 having a high height from coming into contact with the top surface of the rotary cleaning body storage chamber 30 and applying a load to the drive motor (electric motor) 20 (see FIG. 16 described later). Thereby, the self-propelled property (operability) of the vacuum cleaner 1 is improved.

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

  As shown in FIG. 4, when viewed from the lower surface side of the suction body 4, the dust collecting ribs 35 to 38 are more centered in the left-right direction on the front side (forward direction side) than on the back side (reverse direction side). It is provided diagonally so as to face. Further, as shown in FIG. 6, the shape of the dust collecting rib 37 (same for 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.

  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 (reverse direction side) of the cleaning brush 41. It goes to the center side and can be finally sucked into the suction port 34 provided in the center.

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

<Grounding with the floor>
Next, the ground contact with the floor surface of the mouthpiece 4 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. FIG.

  As shown in FIG. 6, in a state where 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. Also protrudes downward. Therefore, 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 and 43 in contact with the floor surface S are deformed, and the cylindrical brushes 42 and 43 and the floor surface are deformed. The contact area with S increases. It is possible to improve the operability of the vacuum cleaner 1 by securing the self-running property of the vacuum cleaner 1 by the rotational cleaning body 40 being rotationally driven.

  On the other hand, the mouthpiece 4 is grounded to the floor surface S with the wheels 21 to 23. As described above with reference to 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 wheel 23 is on the back side (reverse direction side) of the rotary cleaning body 40. Is arranged. With such a configuration, the ground contact area between the cylindrical brushes 42 and 43 and the floor surface S is not excessively widened. Thereby, increase of the load of the drive motor (electric motor) 20 (refer FIG. 16 mentioned later) which rotationally drives the rotary cleaning body 40 can be prevented, and the excessive heat_generation | fever of the drive motor (electric motor) 20 can be prevented.

  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) from the fixed brush 27 (around the rotary cleaning body storage chamber 30. Compared to the lower surface). In addition, as described above with reference to FIG. 3, the rear wheel 23 has a shape with a smaller central diameter as compared with the left and right sides. Thereby, it is possible to prevent dust from accumulating between the fixed brush 27 and the rear wheel 23.

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

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

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

  Here, as shown in FIG. 1B, in the state where the vacuum cleaner 1 is upright (the state where the suction joint 13 is upright), the vacuum cleaner 1 (the handy main body 2 rotated around the rotation axis R). The center of gravity G is on the front side 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. Thereby, in the state which made the vacuum cleaner 1 stand upright, it can stand stably now.

  FIG. 9 is a perspective view of the mouthpiece 4 with the upper case 11 removed. 10A and 10B are side views of the mouthpiece 4 with the upper case 11 removed. FIG. 10A shows a state in which the mouthpiece joint 13 is laid down, and FIG. 10B shows a state in which the mouthpiece joint 13 is upright.

  As shown in FIG. 9, an engagement pin 13 </ b> F is erected from the side surface of the suction joint 13 in the longitudinal direction of the suction body 4. Further, an engagement leaf spring 13G standing from the lower case 12 is fixed to the lower case 12 with screws.

  As shown in FIG. 10A, the engaging pin 13F is not engaged with the engaging leaf spring 13G in the state where the suction joint 13 is laid down. Then, as shown in FIG. 10B, in the state where the mouthpiece joint 13 is upright, the engagement pin 13F engages with the engagement leaf spring 13G, and the mouthpiece joint 13 is moved by the elastic force of the engagement leaf spring 13G. It is designed to be energized in an upright state. Thus, the joint lock mechanism is comprised by the engagement pin 13F and the engagement leaf | plate spring 13G, and it can be made to stand more stably in this state with the vacuum cleaner 1 standing upright. It has become.

  FIG. 11 is a top view showing a state in which the suction joint 13 is moved along the second movable shaft in the state where the suction joint 13 of the suction body 4 is laid down.

  As shown in FIGS. 11 (a) and 11 (b), the suction joint 13 is composed of a lower body 13I and an upper body 13J, and the shaft of the flow path pipe 13A is rotated between them. As a shaft, it can be rotated.

  In this way, the suction joint 13 rotates with the longitudinal direction of the suction body 4 shown in FIGS. 8 and 10 as the first rotation axis and with the axis of the flow path pipe 13A shown in FIG. 11 as the second rotation. Rotation about the shaft can be performed. Thus, the mouthpiece 4 can be rotated about two axes, and the lower surface of the mouthpiece 4 can be suitably brought into contact with the floor surface.

  Thereby, in the state where the vacuum cleaner 1 is lifted, the case (upper case 11 and lower case 12) of the suction body 4 can be swung in the pitching direction by the first rotation shaft, and the second rotation. The shaft can swing in a substantially rolling direction.

<Dust collection space>
Next, the dust collection space 50 will be described with reference to FIGS. 12 and 13. FIG. 12 is a front view of the mouthpiece 4 provided in the vacuum cleaner 1 according to the present embodiment. FIG. 13 is an enlarged view of a portion D in FIG.

  As shown in FIG. 12, the dust collection space 50 is a space formed on the front side of the lower case 12 of the mouthpiece 4, and temporarily collects dust when the mouthpiece 4 is moved in the forward direction. It is space. As shown in FIG. 13, when viewed from the lower surface side of the mouthpiece 4, the dust collection space 50 has a shape in which the front side (forward direction side) has a wide bowl cut in half, and collects dust. Can be done. As shown in FIG. 12, the tip (lower end) of the bumper 14 is placed in the dust collection space 50 when the suction body 4 is viewed from the front. Thereby, it is difficult for dust collected in the dust collection space 50 to escape from the dust collection space 50.

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

<LED>
14 is a partially enlarged cross-sectional view in which the vicinity of the LED guide 15 is enlarged in the cross-sectional view taken along the line EE of FIG.

  Inside the case (upper case 11 and lower case 12), an LED 16 mounted on the LED substrate 17 is provided. The LED guide 15 is formed of a transparent resin, and a lens 15L is formed. Further, the center of the LED 16 is disposed 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 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 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. Thereby, the cleaning state of the floor surface can be easily confirmed. Moreover, since the front side floor surface of the mouthpiece 4 can be illuminated without arranging the LED board 17 obliquely, the arrangement of the LED board 17 can be made without complicating the arrangement.

<Bearing holding member>
FIG. 15 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. 15, 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 cylindrical base body 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. 15 is operated so as to be pushed in, a locking member (not shown) projects in the direction of the bearing holding member 18 from the hole 19A. The bearing holding member 18 can be 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, a locking member (not shown) is retracted 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 (electric motor) unit>
FIG. 16 is a diagram for explaining a unit portion of the drive motor (electric motor) 20, FIG. 16 (a) is a view of the unit portion of the drive motor (electric motor) 20, and FIG. It is the FF sectional view taken on the line of Fig.16 (a).

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

  As shown in FIG. 16B, 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, the ratio of the diameters of the small pulley 61 and the large pulley 62 is increased so that 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 widened, the contact area between the large pulley 62 and the belt 63 is widened, and the belt 63 is prevented from slipping, and a high torque is obtained. Can be output.

  In order to reduce the operating force, a tensioner 65 is provided to increase the reduction ratio between the drive motor (electric motor) 20 and the rotary cleaning body 40 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. Thereby, the frictional resistance between the mouthpiece 4 and the cleaning surface can be lowered, and the operating force can be reduced.

  In addition, it is desirable that the frictional resistance of the mouthpiece 4 is 18 N (the forward path (forward) is 12 N) or less in a carpet defined in Japanese Industrial Standard “JIS C 9108”. (Friction resistance is measured by the following measurement method. A device having a mechanism for applying thrust in the same direction as the operation direction, for example, a rotating brush is rotatable (for example, by removing a timing belt). Measured in accordance with 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 be large in addition to reducing the frictional resistance. The axial torque of the forward path (advance) in the carpet specified in “JIS C 9108” is preferably 30 mN · m or more.

  It is desirable that the operation force when the effect of reducing the operation force is 14 N or less by the operation force measurement method defined in “JIS C 9108”.

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

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

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

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

<Arrangement of drive motor (electric motor)>
Next, the arrangement of the drive motor (electric motor) 20 will be described with reference to FIG. FIG. 17 is a top view of the mouthpiece 4 with the upper case 11 removed.

  The detection switch unit 66 is an automatic return type switch, and when the floor surface detection wheel 26 (see FIG. 3) contacts the floor surface, the detection switch unit 66 is pushed.

The circuit board 67 is electrically connected to the suction terminal 13C through the lead wire 13H. In a state where the detection switch 66 is pushed, power is supplied from the circuit board 67 to the drive motor (electric motor) 20. On the other hand, power supply from the circuit board 67 to the drive motor (electric motor) 20 is cut off in a state where the detection switch portion 66 is not pushed.
Further, as shown in FIGS. 17 and 20, the lower case 12 is formed with a claw portion (lead wire locking portion) 13K for fixing the lead wire 13H. 20 is a cross-sectional view taken along the line GG in FIG.
The claw portion 13K is arranged inside the outer wall 13L of the lower case and below the joint lock mechanism (engagement pin 13F and engagement leaf spring 13G).
Further, the claw portion 13K is formed with a claw slope portion 13M so that the lead wire 13H can be pushed and fixed from the top of the formed claw, and the lead wire 13H is attached to the claw slope portion 13M from the top during assembly. The lead wire 13H is hooked and fixed to the claw portion 13K. That is, when the lead wire 13H is fixed to the claw portion 13K, the claw portion 13K is positioned between the lead wire 13H and the joint lock mechanism (the engagement pin 13F and the engagement leaf spring 13G).
At this time, the gap between the lead wire support rib 13N and the outer wall 13L disposed in the lower case 12 is preferably narrower than the wire diameter of the lead wire 13H in order to prevent the lead wire 13H from coming off.
As a result, the lead wire 13H is fixed to the claw portion 13K so as to largely bypass the joint lock mechanism (engagement pin 13F and engagement plate spring 13G), and therefore the lead wire 13H is engaged with the joint lock mechanism (engagement pin 13F). Wiring can be performed without biting the plywood spring 13G).

  The circuit board 67 is electrically connected to the LED board 17 and supplies power to the LED 16. The power supply to the LED 16 may be turned on / off in conjunction with the detection switch unit 66 in the same manner as the drive motor (electric motor) 20, and is not linked to the detection switch unit 66 but linked to the power button 3a. Then, it may be turned on / off.

  As shown in FIG. 17, the detection switch 66, the floor detection wheel 26 (see FIG. 3), the circuit board 67, and the joint lock mechanism (engagement pin 13F and engagement leaf spring 13G) are arranged in the longitudinal direction of the mouthpiece 4 ( As viewed in the left-right direction of the paper surface of FIG. 17, the drive motor (electric motor) 20, which is a heavy object, is disposed on the opposite side. That is, the motor (electric motor) 20 is disposed on one side of the suction body 4 in the longitudinal direction, and includes a detection switch portion 66, a floor detection wheel 26 (see FIG. 3), a circuit board 67, and a joint lock mechanism (engagement pin 13F). And the engaging plate spring 13G) are arranged on the other side of the suction body 4 in the longitudinal direction.

  Here, as shown in FIG. 11, the case (upper case 11 and lower case 12) of the mouthpiece 4 can be swung in a substantially rolling direction by the second rotating shaft. On the other hand, as shown in FIG. 17, the suction body 4 of this embodiment arrange | positions the drive motor (electric motor) 20 in one side of the longitudinal direction (left-right direction of the paper surface of FIG. 17) of the suction body 4, and the other. Further, the detection switch portion 66, the floor surface detection wheel 26 (see FIG. 3), the circuit board 67, and the joint lock mechanism (the engagement pin 13F and the engagement leaf spring 13G) are arranged firmly. Thereby, the left and right weight balance of the mouthpiece 4 can be achieved.

  For this reason, in the state which lifted the vacuum cleaner 1 which concerns on this embodiment, it can prevent that the case (upper case 11 and lower case 12) of the suction mouth 4 rotates in a substantially rolling direction with a 2nd rotating shaft, The vacuum cleaner 1 with good operability can be provided.

<Cooling of drive motor (electric motor)>
Next, cooling of the drive motor (electric motor) 20 will be described with reference to FIGS. 18 is a cross-sectional view taken along line FF in FIG. FIG. 19 is a top view of the suction body 4 with the upper case 11 removed, explaining the flow of cooling air.

  As shown in FIGS. 9 and 17, the lower case 12 is formed with intake ports 12 </ b> A and 12 </ b> B for taking outside air into the case (upper case 11 and lower case 12). Further, as shown in FIGS. 3 and 17, exhaust ports 12 </ b> C and 12 </ b> D for exhausting air inside the case (upper case 11 and lower case 12) to the rotary cleaning body storage chamber 30 are formed.

  As shown in FIG. 18, the exhaust port 12C (12D) is provided in the inclined portion 12E that is inclined so that the front side is high and the rear side is low. As a result, the clogging of dust in the exhaust port 12C (12D) provided on the rear side wall surface of the rotary cleaning body storage chamber 30 is reduced.

  In FIG. 19, the flow of the cooling air is indicated by arrows (solid line / broken line). When the electric blower 2c (see FIG. 1) operates to generate negative pressure, the air sucked into the case (upper case 11 and lower case 12) from the intake port 12A is supplied to the drive motor (electric motor) 20. It flows through the inside and cools the drive motor (electric motor) 20. And the air which cooled the drive motor (electric motor) 20 flows into the rotary cleaning body storage chamber 30 (refer FIG. 4) from the exhaust port 12C, and is sucked into the suction port 34 (refer FIG. 4). .

  The air sucked into the case (upper case 11 and lower case 12) from the air inlet 12B cools the circuit board 67. The air that has cooled the circuit board 67 flows from the exhaust port 12D to the rotary cleaning body storage chamber 30 (see FIG. 4) and is sucked into the suction port 34 (see FIG. 4).

  In addition, although this embodiment demonstrated as what is the vacuum cleaner 1 using 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 the vacuum cleaner may be provided with a cord reel and obtain power from an outlet such as a wall, or may be provided with both a storage battery and a cord reel, depending on the situation. A vacuum cleaner that obtains electric power may be used.

  In the present embodiment, the cylindrical brushes 42 and 43 (self-running brushes) are provided at both ends of the cleaning brush 41, but this is not restrictive. A vacuum cleaner that does not include the fixed brush 27 may be used as long as the effect of reducing the operating force is achieved.

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 Suction body 5 Channel 6 Charging stand 11 Upper case (case)
11A Locking surface 12 Lower case (case)
13 Suction joint 13A Channel pipe 13B Suction clamp 13C Suction terminal 13D Hose 13E Locking surface 13F Engagement pin (joint lock mechanism)
13G engagement leaf spring (joint lock mechanism)
13H Lead wire 13I Lower body 13J Upper body 13K Claw part 13L Outer wall 13M Claw slope part 13N Lead wire support rib 14 Bumper 14A Slope part 15 LED guide 15L Lens 16 LED
17 LED board 18 Bearing holding member 19 Lock lever 20 Drive motor (electric motor)
20A Auxiliary yokes 21 and 22 Wheel 23 Rear wheels 24 and 25 Brush member 26 Floor surface detection wheel 27 Fixed brush 28 Fixed brush escape recess 29 Lower back portion 30 Rotating cleaning body storage chamber 31 Storage chamber top surface 32 and 33 Brush escape portion 34 Suction port 35 to 38 Dust collecting rib 40 Rotating cleaning body 41 Cleaning brush 42, 43 Tubular brush (self-running brush)
44 Base 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 66 Detection switch part 67 Circuit board G Center of gravity S Floor surface R Rotating shaft 70 Detection switch 71 Rotating shaft 72 Arm 73 Coil spring

Claims (5)

In a vacuum cleaner comprising an electric blower and a dust case between the handle and the mouthpiece,
The mouthpiece is
An electric motor,
A detection switch unit that detects that the suction body is installed on the cleaning surface;
The electric motor is disposed on one side in the longitudinal direction of the mouthpiece,
The vacuum cleaner, wherein the detection switch unit is arranged on the other side in the longitudinal direction of the mouthpiece. The mouthpiece is
A mouthpiece joint rotatable about the longitudinal direction of the mouthpiece as a rotation axis;
A joint lock mechanism that locks the suction joint in an upright state,
The vacuum cleaner according to claim 1, wherein the joint lock mechanism and the circuit board are arranged on the other side in the longitudinal direction of the suction body. The mouthpiece is
A circuit board for controlling power feeding to the electric motor, a lead wire wired to the circuit board, and a lead wire locking portion,
The vacuum cleaner according to claim 2, wherein the lead wire locking portion is located between the lead wire and the joint lock mechanism. The mouthpiece is
A locking portion in which the joint lock mechanism rotates together with the suction joint;
The vacuum cleaner according to claim 3, further comprising a leaf spring that fixes the locking portion in a state where the suction joint is upright. The detection switch unit includes a detection switch that performs ON / OFF of power supplied to the electric motor, a floor detection wheel that contacts a cleaning surface, and a moment that is generated when the floor detection wheel contacts the cleaning surface, A rotation shaft provided with an arm portion that rotates to turn on the detection switch, and a coil spring that is provided on the rotation shaft and generates a force for rotating the arm portion in a direction in which the detection switch is turned off, Have
The vacuum cleaner according to any one of claims 1 to 4, wherein the detection switch and the coil spring are provided so as to overlap in the vertical direction of the suction body.