WO2016147676A1

WO2016147676A1 - Air purifier

Info

Publication number: WO2016147676A1
Application number: PCT/JP2016/050025
Authority: WO
Inventors: 乳井　一夫; 洋介久下; 好孝明里
Original assignee: 三菱電機株式会社; 三菱電機ホーム機器株式会社
Priority date: 2015-03-19
Filing date: 2016-01-04
Publication date: 2016-09-22
Also published as: CN107208913A; TWI616626B; JP6327398B2; JPWO2016147676A1; CN107208913B; TW201700924A

Abstract

In order to provide an air purifier having a main body that rotates stably, an air purifier according to the present invention is provided with a base stand and a main body (1) that is provided above the top surface of the base stand (71) and is capable of rotation in a left-right direction relative to the base stand. The main body (1) has a lower main body case that is attached to the lower end of the main body. A recess is provided in a portion of the top surface of the base stand (71). A portion of the lower main body case protrudes below the top surface of the base stand (71) and is accommodated in the recess. The main body (1) is supported so as to be capable of rotation between the vicinity of the top surface of the base stand (71) and the vicinity of the bottom surface of the recess.

Description

Air cleaner

The present invention relates to an air cleaner that cleans indoor air.

2. Description of the Related Art An air purifier is conventionally known which has a vertically long tall main body, and the main body is pivotable by a drive motor. (See, for example, Patent Document 1).

Japanese Patent No. 4333024

In the air cleaner described in Patent Document 1, a support plate is attached to a stand, and a plurality of rollers provided on the support plate rotatably support a flat rotation plate, and the rotation plate The body is placed on top of the

The crank mechanism and the drive motor provided on the support plate convert the rotational motion obtained by the drive motor into a reciprocating motion by the crank mechanism, and the reciprocating motion moves the crank shaft of the movably mounted crank mechanism left and right The pivoting plate is pivoted by causing the main body disposed thereon to pivot.

In the air purifier described in Patent Document 1, since the main body is disposed on the flat rotating plate, the vertically long tall main body may become unstable at the time of rotating. And in the structure which converts the rotational motion of a drive motor into a reciprocating motion with a crank mechanism, and rotates a main body, smooth rotation is difficult. For this reason, the instability is promoted and the balance at the time of turning becomes worse, and in the worst case, the upper side of the air cleaner may become unstable and fall.

In addition, although a plurality of rollers rotatably supporting the rotation plate are provided, they are arranged concentrically from one plane and from the center of one circle, so that the fluctuation when the main body rotates can be prevented. It can not be suppressed.

In order to solve such problems, the present invention provides an air cleaner with high safety in which even when the main body is long and tall and the main body rotates stably, the main body can stably move. To aim.

An air cleaner according to the present invention, which solves the problem, comprises: a base base having a lower surface, an upper surface provided in parallel with a lower surface at a constant distance, and a side surface connecting the lower surface and the upper surface; And a main body which is provided on the upper side of the base and is rotatable in the left and right direction with respect to the base. The body has a lower body case attached to the lower end of the body. The base is provided with a recess in a part of the upper surface. A portion of the lower body case protrudes downward below the upper surface of the base and is accommodated in the recess. The main body is rotatably supported with its height being changed between the upper surface of the base and the lower surface of the recess.

According to the present invention, a part of the lower main body case is accommodated in the recess provided on the upper surface of the base, and the main body is rotatable on two surfaces different in height between the upper surface of the base and the bottom of the recess. Support, so stabilisation is suppressed. According to the present invention, it is possible to provide a highly safe air cleaner in which the rotation of the main body is stable.

It is a perspective view which shows schematic structure of the air cleaner which concerns on Embodiment 1 of this invention. FIG. 2 is a cross-sectional view of the air purifier according to Embodiment 1 of the present invention cut along a cross section AA shown in FIG. It is a disassembled perspective view of the air cleaner which concerns on Embodiment 1 of this invention. It is a perspective view of the air cleaner main body support to which the stepper motor was attached of the air cleaner which concerns on Embodiment 1 of this invention. It is a disassembled perspective view of the air cleaner main body support stand shown in FIG. It is a structure exploded view of the clutch mechanism of the connecting shaft which connects a stepping motor and a pinion gear of the air cleaner concerning Embodiment 1 of the present invention. FIG. 5 is a cross-sectional view taken along the line BB shown in the plan view (a) and the plan view (a) of the air purifier main body support shown in FIG. 4. It is a schematic diagram (a) showing the position of the wheel of the air cleaner which concerns on Embodiment 1 of this invention, and a schematic diagram (b) of the air cleaner whose wheels are on the same plane. State diagram (a) of the position detection means when the air purifier according to Embodiment 1 of the present invention detects the position of the reference state, the air purifier according to Embodiment 1 of the present invention is in the reference state The state diagram (b) of the position detection means when detecting the position rotated from the position to the left (the direction L in FIG. 1), and the state diagram of the air purifier according to Embodiment 1 of the present invention It is a state figure (c) of a position detection means when detecting the position which rotated further leftward from the position of the state of b). BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of the air cleaner which concerns on Embodiment 1 of this invention.

Embodiment 1
(Main body structure of air purifier)
FIG. 1 is a perspective view showing a schematic configuration of an air purifier according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the air purifier according to Embodiment 1 of the present invention cut along a cross section AA shown in FIG. FIG. 3 is an exploded perspective view of the air purifier according to Embodiment 1 of the present invention.

An air purifier according to Embodiment 1 of the present invention will be described according to FIGS. 1 to 3. In each of the drawings, the same or corresponding parts are denoted by the same reference numerals, and a part of the description may be omitted.

The air cleaner 100 is composed of a main body 1 and a support 2. The main body 1 is in the form of a rectangular parallelepiped elongated in the vertical direction as shown in FIG. A support 2 is provided below the rectangular parallelepiped main body 1. The support 2 is rotatably supported such that the main body 1 can be turned. The rotational structure of the main body 1 and the support base 2 will be described in detail later with reference to FIGS. 4 to 7.

As shown in FIG. 3, the main body 1 has a configuration in which four long rectangular surfaces are covered with a cover member. In more detail, the cover is covered with a cover member integrally formed by resin molding, which is a front panel 3 on the front, a side cover 4 on the side, and a side cover 5 on the side, and a rear cover 6 on the rear.

A front main body case 7 and a rear main body case 8 are provided as main structures of the main body 1 in the inside covered with the front panel 3, the side cover 4, the side cover 5 and the rear cover 6 on four sides. The front body case 7 and the rear body case 8 are integrally formed by resin molding, respectively.

The upper fan unit 9 including the fan 21, the fan motor 22, and the motor holding member 23, and the lower fan unit 10 including the fan 24, the fan motor 25, and the motor holding member 26 are attached to the rear main body case 8.

The fan motor 22 of the upper fan unit 9 is a hole (not shown) of the motor holding member 23 so that a part thereof enters the upper fan casing rear surface plate concave portion 8c provided on the upper fan casing rear surface plate 8b of the upper fan casing 8a. And the fan motor rotation shaft 22 a is passed through and held by the motor holding member 23. Thereafter, the motor holding member 23 is fixed to the upper fan casing rear surface plate 8b by screws (fastening parts) not shown.

A washer 27a for preventing the fan 21 from fluttering, a fan 21 and a washer 27b for preventing the fan 21 from fluctuating are passed through the fan motor rotation shaft 22a. The upper fan unit 9 is configured by fixing the fan 21 to the fan motor rotation shaft 22 a by the nut 28 shown in FIG. 2.

Similarly, the fan motor 25 of the lower fan unit 10 is partially inserted into the lower fan casing rear surface plate recess 8f provided in the lower fan casing rear surface plate 8e of the lower fan casing 8d. The fan motor rotation shaft 25 a is passed through a hole (not shown) and held by the motor holding member 26. Thereafter, the motor holding member 26 is fixed to the lower fan casing rear surface plate recess 8 f by screws (fastening parts) not shown.

Then, a washer 27a for preventing the fan 24 from fluttering, a fan 24 and a washer 27b for preventing the fan 24 from fluctuating are passed through the fan motor rotation shaft 25a. The lower fan unit 10 is configured by fixing the fan 24 to the fan motor rotation shaft 25 a by the nut 28 shown in FIG. 2.

The front body case 7 is attached to the front of the rear body case 8 to which the upper fan unit 9 and the lower fan unit 10 are attached by screws (fastening parts) not shown. The front main body case 7 includes an upper fan casing cover 7a covering the upper fan casing 8a and a lower fan casing cover 7c covering the lower fan casing 8d.

The upper fan casing cover 7 a is provided with an upper fan casing cover opening 7 b for supplying air to the upper fan unit 9. The lower fan casing cover 7 c is provided with a lower fan casing cover opening 7 d for supplying air to the lower fan unit 10.

The fan 21 of the upper fan unit 9 is a sirocco fan which is a multi-blade centrifugal fan that sucks in from the axial front direction of the rotation shaft and sends it in the centrifugal direction. The upper fan casing 8a and the upper fan casing cover 7a form a scroll space for the upper fan unit 9 to blow air.

Similarly, the fan 24 of the lower fan unit 10 is also a sirocco fan. The lower fan casing 8d and the lower fan casing cover 7c form a scroll space for the lower fan unit 10 to blow air.

As shown in FIG. 2, a front side delivery port 64 is provided above the scroll space formed by the upper fan casing 8a and the upper fan casing cover 7a. The front side delivery port 64 is for delivering in the centrifugal direction the air sucked from the upper fan casing cover opening 7b in which the upper fan unit 9 is in the axial forward direction of the rotation shaft.

A ventilation path 66 is provided above the scroll space formed by the lower fan casing 8 d and the lower fan casing cover 7 c. The air passage 66 is formed by the rear cover 6 attached to the rear main body case 8 by screws (fastening parts) not shown, and the upper fan casing rear plate 8b.

The air passage 66 is an air passage that guides the air sucked by the lower fan unit 10 to the rear side delivery port 65 by passing the back of the scroll space formed by the upper fan casing 8 a and the upper fan casing cover 7 a. . The rear side delivery port 65 is provided at the same height as the front side delivery port 64.

The scroll space formed by the lower fan casing 8d and the lower fan casing cover 7c is a position closer to the air passage 66 than the scroll space formed by the upper fan casing 8a and the upper fan casing cover 7a. It is arranged in a staggered manner.

By this arrangement, it is possible to reduce the air passage pressure loss through which the air flows without causing the path from the scroll space formed by the lower fan casing 8d and the lower fan casing cover 7c to the air passage 66 to bend sharply.

A guard net 31 is attached above the front delivery port 64 and the rear delivery port 65. The guard net 31 has foreign matter in the scroll space formed by the upper fan casing 8a and the upper fan casing cover 7a and the scroll space formed by the lower fan casing 8d and the lower fan casing cover 7c via the air passage 66. In addition to preventing entry, it protects the rotating object such as the fan 21 from touching the finger.

An upper unit 40 is provided above the guard net 31. The upper unit 40 includes a front louver 62 and a rear louver 63, and a front louver drive motor 54a and a rear louver drive motor 54b for driving them.

The front louver 62 is for blowing most of the air sent from the front air outlet 64 from the upper front of the upper fan unit 9 to the upper front range, for example, the upper front 45 ° to 90 °. . Similarly, the rear louver 63 blows most of the air sent from the rear air outlet 65 from the upper front of the lower fan unit 10 to the upper front, for example, from 45 ° to 90 °. belongs to. The front louver 62 and the rear louver 63 are closed when the air cleaner 100 is not in operation. The front louver 62 and the rear louver 63 are designed to open as shown in FIG. 1 when the air cleaner 100 is in operation.

Further, the upper unit 40 is provided with a human detection sensor 45. The human detection sensor 45 detects the position of a person in the living room in which the air purifier 100 is placed in order to determine the delivery direction of the air that the air purifier 100 sucks and delivers. This changes the delivery direction of the air delivered toward the position where human beings are detected. Specifically, the main body 1 is turned to change the air delivery direction so that the front panel 3 of the main body 1 faces in the direction of the position where a person is present. The rotation of the main body 1 to change the air delivery direction will be described later.

An operation display unit 41 is provided in front of the upper surface of the upper unit 40. The operation display unit 41 includes an operation board unit 42, a plurality of operation switches 43, and a design sheet 44. The input such as various selections for operating the air purifier 100 is performed by the operation switch 43. An operation signal from the operation board unit 42 is sent to the control board 49 connected from the operation board unit 42 by a signal line (not shown). In addition, the input information and the operation status are displayed on a display unit (not shown).

As shown in FIG. 3, the control substrate 49 is incorporated in the substrate cases 48 and 50 and covered with the covers 47 and 51 to constitute a control substrate unit 46. In the control board 49, a control circuit is configured by a microcomputer 49a, an output circuit 49b and the like which will be described later. The output circuit 49 b is configured of an electronic component mounted on a substrate.

The substrate cases 48 and 50 are formed of a flame retardant resin. The covers 47 and 51 are formed of metal. Control board unit 46 is an air path between the scroll space formed by upper fan casing 8a and upper fan casing cover 7a shown in FIG. 3 and the scroll space formed by lower fan casing 8d and lower fan casing cover 7c. Are accommodated in the space 53 which does not affect the

As described above, the control board 49 is connected to the operation board unit 42 by a connection line (not shown). The lead wire cover 52 is attached to the rear main case 8 so that the connection line drawn from the upper fan unit 9 does not touch the fan 21.

Further, the control board 49, the upper fan unit 9 and the lower fan unit 10 are connected by connection lines (not shown), and drive power is supplied. Connection lines not shown do not interfere with the air passage such as the scroll space formed by the front body case 7, the rear body case 8 and the side cover 4, or the front body case 7, the rear body case 8 and the side cover 5 Housed in space.

Next, the side cover 4 is attached to the right side as viewed from the front side and the side cover 5 on the left side in the side direction of the front body case 7 and the rear body case 8. Each of the side covers 4 and 5 has a plurality of engaging pieces (not shown), and the engaging pieces are inserted into and attached to engaging portions provided on the rear cover 6. The side covers 4 and 5 are attached to the front main body case 7 from the front side with screws (fastening parts) not shown. When the side covers 4 and 5 are attached, the screws (fastening parts) to which the back cover 6 is attached are hidden by the side covers 4 and 5 and disappear in appearance, so that the design is improved.

The side cover 4 is provided with a concave handle 4 a that is recessed to the inside of the main body 1. Similarly, the side cover 5 is provided with a concave handle 5a. When the user moves the air purifier 100, the user can hold the handle 4a and the handle 5a by hand.

A design sheet 4 b is provided on the top of the side cover 4. A design sheet 5 b is provided on the top of the side cover 5. Although the design sheets 4b and 5b are for improving the texture of the appearance, they are not necessarily required, and the upper portions of the side covers 4 and 5 may be used as the appearance design as they are.

Next, as shown in FIG. 3, an upper fan guard 32 is provided in front of the upper fan casing cover opening 7b. A lower fan guard 33 is provided in front of the lower fan casing cover opening 7d. The upper fan guard 32 and the lower fan guard 33 prevent foreign matter from entering the scroll space, and protect the rotating objects such as the

fans

21 and 24 from touching fingers.

Furthermore, the deodorizing filter 34, the HEPA filter 35, and the prefilters 36a and 36b are provided in the front. By the prefilters 36a and 36b, large dust contained in the sucked air is collected. Further, finer dust is collected by the HEPA filter 35, and the air is purified and discharged. The deodorizing filter 34 has a function of adsorbing the odor of the sucked air to reduce the odor.

The front panel 3 is detachably attached in front of the filters so as to cover the filters. Replacement and cleaning of the filters can be easily done by removing the front panel 3. In addition, when the front panel 3 is attached, the screws (fastening parts) to which the side covers 4 and 5 are attached from the front side are hidden by the front panel 3 and disappear in appearance, thereby improving the design.

A concave drop is provided above the front panel 3. The concave drop has an opening at its center. With the front panel 3 attached, a human detection sensor 45 protrudes from the opening.

As shown in FIG. 3, a recess 4 c is provided in front of the side cover 4. Similarly, a recess 5 c is provided in front of the side cover 5. As shown in FIG. 1, an intake port 61 is formed by the front panel 3 and the recess 4 c in the front of the side cover 4. The intake port 61 sucks in air drawn into the scroll space formed by the upper fan casing 8a and the upper fan casing cover 7a and the scroll space formed by the lower fan casing 8d and the lower fan casing cover 7c. is there. Although not shown, the air inlet is also formed in the front recess 3c of the front panel 3 and the side cover 5 as well.

(Support stand structure of the main body)
Next, the support 2 for supporting the lower portion of the main body 1 and the main body 1 will be described with reference to FIGS. 4 to 9. In addition, it may be demonstrated using the above-mentioned figure.

FIG. 4 is a perspective view of an air purifier main body support attached with a stepping motor of the air purifier according to Embodiment 1 of the present invention. FIG. 5 is an exploded perspective view of the air purifier main body support shown in FIG. FIG. 6 is an exploded view of the clutch mechanism of the connecting shaft that connects the stepping motor and the pinion gear in the air purifier according to Embodiment 1 of the present invention. Fig.7 (a) is the top view seen from the upper direction of the air cleaner main body support stand shown in FIG. FIG. 7 (b) is a cross-sectional view taken along the line BB shown in FIG. 7 (a). Fig.8 (a) is a schematic diagram showing the position of the wheel of the air cleaner which concerns on Embodiment 1 of this invention. FIG. 8 (b) is a schematic view of the air cleaner in which the wheels are on the same plane. FIG. 9A is a state diagram of the position detection means when the air purifier according to Embodiment 1 of the present invention detects the position of the reference state. FIG.9 (b) is a state diagram of a position detection means at the time of detecting the position which the air cleaner which concerns on Embodiment 1 of this invention rotated leftward (in the L direction of illustration) from the position of a reference state. is there. FIG.9 (c) is a state diagram of a position detection means at the time of detecting the position which the air cleaner concerning Embodiment 1 of this invention rotated further leftward from the position of the state of FIG.9 (b). It is.

The support 2 rotatably supports the main body 1. The main body 1 is rotated by a stepping motor (drive motor) 82 described later.

The support base 2 is provided with a rectangular base base 71 whose longitudinal direction is horizontal and whose front and rear directions are short. The base 71 is provided with a circular recess 71 j. At the center of the circular recess 71j, a rotation center axis guide 73 which is hollow and whose tip is open is provided. The rotation center shaft 76 is attached to the rotation center shaft guide 73 by a fastening part such as a screw. The rotation center shaft 76 is formed of a highly slidable resin, such as polyacetal (POM) resin.

In FIG. 4, FIG. 5, and FIG. 7, reference numeral 29 denotes a lower main body case formed by resin molding. The lower main body case 29 is fixed so as to sandwich the flange 29g and the flange 29h projecting outward from the outer periphery between the lower portion of the front main body case 7 and the lower portion of the rear main body case 8 shown in FIG. The lower main body case 29 is attached to the main body 1 as shown in FIGS. 1 and 2 and constitutes the lower end of the main body 1.

The lower main body case 29 is formed of metal in a disc shape, and an annular sliding plate 74 having an opening 74 a provided in the disc shape is attached. The lower end of the lower main body case 29 protrudes downward from the opening 74 a of the sliding plate 74. The lower main body case 29 and the sliding plate 74 are attached by screws (fastening parts) so as to be integrated as a structure at a position where the upper surface of the sliding plate 74 and the lower surface of the flange 29g and the lower surface of the flange 29h abut.

The sliding plate 74 is accommodated in a step 71 g which is one step lower than the upper surface of the base 71. The base stand 71 is provided with a plurality of sliding plate holding parts 71 a. The same number of sliding plate retainers 75 as the plurality of sliding plate retainers 71a are attached by screws (fastening parts), so that the lower main body case 29 is lowered by one step from the upper surface of the sliding plate 74 A part of the outer circumference is held down. However, the slide plate 74 is not fixed in a non-movable state, and is held rotatably with a minute gap.

Since the sliding plate 74 is rotatably held with a minute gap, the lower main body case 29 does not come off the base 71 without the sliding plate 74 lifting up. For this reason, the inclination of the main body 1 and wander can be suppressed.

An edge 74 b bent downward is formed on the entire outer periphery of the sliding plate 74. An annular recess 71 h is provided on the outer periphery of the stepped portion 71 g which is one step lower than the upper surface of the base 71. In a state where the sliding plate 74 is accommodated in the step portion 71g, the rim portion 74b has an inlay structure in which the annular recess 71h is inserted over the entire circumference.

With this structure, foreign matter such as dust is less likely to intrude into the step 71 g and the recess 71 j of the base 71. Further, as described above, since the sliding plate 74 is held by the sliding plate retainer 75 so as not to float up, dust and other foreign matter can be more reliably prevented from entering.

As described above, dust and other foreign matter do not easily intrude, so that dust does not get caught on the support-side wheel 78 that assists the rotation of the main body 1 to be described later, thereby preventing any trouble in the operation. Further, the operation of the parts for rotating the main body 1 such as the stepping motor (drive motor) 82 and the pinion gear 84 is not disturbed.

The lower main body case 29 is provided with a rotation center bearing 29 f at its center. When the lower main body case 29 is attached to the base 71, the rotation center bearing 29f is rotatably inserted into the rotation center shaft 76. The lower main body case 29 is inserted into the rotation center shaft 76. The stopper 79 is attached so as to sandwich the groove-like recess 76a provided on the rotation center shaft 76 from the lateral hole provided on the side surface of the rotation center bearing 29f. The stopper 79 prevents the lower main body case 29 from coming off the base 71.

As described above, the tip of the rotation center axis guide 73 is open. This opening passes through the main body 1 the connection terminal side of the power supply cord 55 for supplying drive power from a commercial power supply. The pivot center axis guide 73 is the pivot center of the pivoting main body 1, and the power cord 55 is connected to the control board 49 by a connection line (not shown) through the pivot center. For this reason, even if the main body 1 rotates with respect to the support stand 2, bending of the power supply cord 55 and a connecting line (not shown) is suppressed, and disconnection is difficult to occur.

The lower main body case 29 is provided with a drive unit support portion 29a which protrudes upward (is recessed when viewed from the lower side) from the lower side. The main body rotational drive unit 81 is attached to the drive unit support portion 29a from below with screws (fastening parts). The main body rotation drive unit 81 includes a stepping motor (drive motor) 82 whose rotational speed can be easily changed by the number of pulses, a connecting shaft 83, a pinion gear 84, and a bearing 85.

The connecting shaft 83 transmits the drive torque of the stepping motor (drive motor) 82 to the pinion gear 84. The connecting shaft 83 is connected to a pinion gear 84, and one end thereof is connected to a stepping motor (drive motor) 82, and the other end is rotatably supported by a bearing 85 attached to a holding member 86.

The connection point between the connecting shaft 83 and the pinion gear 84 has a clutch mechanism shown in FIG. The connecting shaft 83 is provided with a clutch through hole 83a. A clutch spring 88 is disposed in the clutch through hole 83a. Clutch balls 87 are disposed slidably at both ends of the clutch spring 88.

Each clutch ball 87 is biased by a clutch spring 88 in a direction to project from both through holes of the clutch through hole 83a. The pinion gear 84 is provided with a clutch groove 84a in which the clutch ball 87 is fitted.

When the main body 1 is rotated by the stepping motor (drive motor) 82, the clutch ball 87 is fitted in the clutch groove 84a, and the driving torque of the stepping motor (drive motor) 82 is transmitted to the pinion gear 84. It is done.

The spring load of the clutch spring 88 ensures that the clutch ball 87 is pressed against the clutch groove 84a by the driving torque of the stepping motor (drive motor) 82, and the connection shaft 83 and the pinion gear 84 prevent rotation. It is set to be able to.

However, regardless of the intention or not, when the turning force or the turning force in the reverse direction applied to the stepping motor (drive motor) 82 exceeds the driving torque of the stepping motor (drive motor) 82, the clutch ball 87 forms the clutch groove 84a. It is pushed by the inner peripheral wall 84b of the pinion gear 84, and moves in the inward direction of the clutch through hole 83a against the biasing force of the clutch spring 88. Thus, the locking of the connecting shaft 83 and the pinion gear 84 is released.

Even if a rotational force or a rotational force in the reverse direction exceeding the drive torque of the stepping motor (drive motor) 82 is applied to the main body 1 by this clutch mechanism, the load may be directly applied to the stepping motor (drive motor) 82 Instead, the stepping motor (drive motor) 82 is protected. Further, since the drive structure for rotating the main body 1 such as the pinion gear 84 and the rack gear 72 described later is not stressed, the drive structure is not broken.

Further, the lower main body case 29 rotatably holds a plurality of main body side wheels (first wheels) 77 at a position accommodated in the recess 71 j of the base 71, in other words, at the lower end. The same number of main body side wheel holding parts 29e as the wheel 1) 77 are provided. The main body side wheel holding portion 29e is configured such that the main body side wheel (first wheel) 77 is inserted from the lower surface side. A part of the main body side wheel (first wheel) 77 protrudes from the lower surface of the lower main body case 29 in a held state.

The main body side wheel (first wheel) 77 is held by the main body side wheel holding portion 29 e of the lower main body case 29. The main body side wheel (first wheel) 77 is grounded to the bottom surface 71k of the recess 71j of the base 71 as shown in FIGS. Are rotating.

In the base stand 71, the position from the center of the rotation center shaft 76 is outside the body side wheel (first wheel) 77 and above the holding position of the body side wheel (first wheel) 77 A plurality of support base wheel holding portions (second wheels) 78 are rotatably supported by the same number of support base wheel holding portions 71 f as the support base wheels (second wheels) 78.

The support base side wheel holding portion 71f is a step portion 71g on the top surface of the base 71 and is provided immediately inside the annular recess 71h. The support base side wheel holding portion 71 f is configured such that the support base side wheel (second wheel) 78 is inserted from the upper surface side of the step portion 71 g. The support stand side wheel (second wheel) 78 partially protrudes from the upper surface of the step portion 71 g in a held state.

The support base side wheel (second wheel) 78 is held by the support base side wheel holding portion 71 f. The support base side wheel (second wheel) 78 is in contact with the lower surface side of the sliding plate 74 to support the main body 1 as shown in FIGS. It is rotating.

As shown in FIGS. 2 and 7 (b), the lower main body case 29 is in the recess 71 j of the base 71. The main body side wheel (first wheel) 77 partially projecting from the lower surface of the lower main body case 29 is supported by being grounded to the bottom surface 71 k of the recess 71 j of the base 71.

Further, in the main body 1, the sliding plate 74 attached to the lower main body case 29 is in contact with the support base side wheel (second wheel) 78 in which a portion protrudes from the upper surface of the step portion 71 g of the base base 71. It is supported by contact. As described above, the main body 1 is supported by the bottom surface 71 k of the recess 71 j of the base 71 and the step 71 g on the upper surface of the base 71. For this reason, rotation of the main body 1 is stabilized.

This will be described in more detail with reference to FIG. FIG. 8A schematically shows the positions of the main body side wheel (first wheel) 77 and the support base side wheel (second wheel) 78 supporting the main body 1 of the air purifier according to the first embodiment of the present invention. In the FIG. 8 (b) schematically shows the positions of the

wheels

91 and 92 that support the air purifier main body 90 in which the wheels are on the same plane.

In FIG. 8A, G represents the center of gravity of the main body 1 and S represents the direction of the force applied to the center of gravity G when the main body 1 is inclined. Similarly, in FIG. 8B, G represents the center of gravity of the main body 90, and S represents the direction of the force applied to the center of gravity G when the main body 1 is inclined.

The distance between the support base wheel (second wheel) 78 and the wheel 92 from the center of the rotation center shaft 76 and the body side wheel (first wheel) 77 from the center of the rotation center shaft 76 and the wheel 91 is It is assumed that the angles of inclination of the main body 1 and the main body 90 are equal. When a force is applied in the direction in which the main body 1 is inclined, in the air cleaner according to the first embodiment of the present invention, the direction S of the force is on the outer side than the main body side wheel 77 as shown in FIG. It is hung on the inside of the support base wheel 78.

On the other hand, in the case of an air cleaner in which the wheels are coplanar, as shown in FIG. 8B, the direction of force S is further outside the wheel 92 which is outside the wheel 91. Therefore, in an air cleaner in which the wheels are on the same plane, the force applied in the direction of inclination can not be suppressed, and the main body 90 is inclined.

In the air purifier according to Embodiment 1 of the present invention, the main body side wheel (first wheel) 77 and the support base side wheel (second wheel) 78 have a difference in height, and are inclined as described above. Is applied to the inside of the support base wheel (second wheel) 78 located outside the main body wheel (first wheel) 77. Thereby, since the force applied when tilting can be suppressed, the inclination of the main body 1 can be suppressed.

Next, a rack gear 72 is provided along the inner peripheral wall of the edge of the recess of the base 71. The rotation center bearing 29f of the lower body case 29 is inserted into the rotation center shaft 76, and the sliding plate 74 is rotatably held by the sliding plate retainer 75 so that the stopper 79 does not come off the lower body case 29 In the mounted state, the rack gear 72 and the pinion gear 84 of the main body rotational drive unit 81 are engaged with each other.

Next, in the lower main body case 29, position detection means 80a, 80b, 80c consisting of, for example, photo interrupters are held by the position detection means holding portions 29b, 29c, 29d, respectively.

The photo interrupter has a light emitting unit and a light receiving unit. The photo interrupter is a sensor that detects whether the light emitted from the light emitting unit can be received or not received by the light receiving unit. The position detection means 80a, 80b, 80c are arranged such that intermediate positions of the light emitting portion and the light receiving portion are equally spaced from the center of the rotation center axis 76 on the same circle.

The base 71 is provided with a rib-like blocking wall 71b for shielding the light emitting portion and the light receiving portion of the

position detecting means

80a, 80b, 80c and projecting upward from the bottom surface. The blocking wall 71b has an arc shape provided on the same circle from the center of the rotation center shaft 76, and is provided so as to overlap concentrically with the middle position of the light emitting portion and the light receiving portion of the

position detecting means

80a, 80b, 80c. It is done. In the blocking wall 71b, position detection slits 71c, 71d, and 71e through which light emitted from the light emitting units of the

position detection units

80a, 80b, and 80c can pass are provided at equal intervals.

As shown in FIG. 1, it is assumed that the main body 1 is in the reference state when the front panel 3 and one side of the base stand 71 of the support base 2 in the left-right longitudinal direction are parallel. In this state, the position detection means 80a is arranged corresponding to the position detection slit 71c. In this state, the position detection means 80b is arranged corresponding to the position detection slit 71d. In this state, the position detection means 80c is arranged corresponding to the position detection slit 71e.

In this state, the

position detectors

80a, 80b, and 80c are all in a state in which the light receiver can receive the light emitted from the light emitter. Therefore, when all the

position detectors

80a, 80b, and 80c can receive light, it can be determined that the main body 1 is at the position of the reference state.

This will be described in more detail with reference to FIG. FIG. 9A shows the positional relationship between the position detection means 80a, 80b, 80c and the position detection slits 71c, 71d, 71e when the main body 1 is at the position of the reference state.

The position where the light emitted from the light emitting unit of the position detecting means 80a passes through the position detecting slit 71c and the light receiving unit of the position detecting means 80a receives light, and the light emitted from the light emitting unit of the position detecting means 80b detects position A position which can be received by the light receiving portion of the position detecting means 80b after passing through the slit 71d, light emitted from the light emitting portion of the position detecting means 80c passes through the position detecting slit 71e and is received by the light receiving portion of the position detecting means 80c It is a possible position.

FIG. 9 (b) shows the positional relationship between the position detection means 80a, 80b, 80c and the position detection slits 71c, 71d, 71e when the main body 1 is pivoted to the left (direction L in FIG. 1). . The position detection means 80a can receive light by the position detection slit 71d and the position detection means 80b can receive light by the position detection slit 71e, but the position detection means 80c is detached from the position detection slit and the light is blocked by the blocking wall 71b. It is impossible to receive light.

9C shows the positions of the position detection means 80a, 80b, 80c and the position detection slits 71c, 71d, 71e when the main body 1 is further turned to the left than in the state of FIG. 9B. It is a relationship. The position detection means 80a can receive light by the position detection slit 71e, but the position detection means 80b and the position detection means 80c are separated from the position detection slit and the light is blocked by the blocking wall 71b and light reception is impossible. .

As described above, it is possible to determine how much the main body 1 is pivoted to the left or the right by combining the light receiving states of the

position detectors

80a, 80b, and 80c. That is, the

position detecting means

80a, 80b, 80c can judge that the main body 1 is not at the position of the reference state unless all the light emitted from the light emitting part can be received by the light receiving part. As a result, the main body 1 can be returned to the position of the reference state by rotating the main body 1 back to a position where all of the position detection means 80a, 80b, 80c can receive light.

(Operation of air purifier)
Next, the operation of the air purifier 100 will be described using FIG. FIG. 10 is a schematic block diagram of the air cleaner according to Embodiment 1 of the present invention.

A microcomputer 49a is mounted on the control substrate 49, and a control circuit such as an output circuit 49b is configured by a wiring pattern (not shown) provided on the substrate and the mounted electronic component.

The output circuit 49 b is connected to the upper fan unit 9, the lower fan unit 10, the front louver drive motor 54 a, the rear louver drive motor 54 b, and the stepping motor (drive motor) 82.

When operating the air purifier 100, first, when a plug (not shown) of the power cord 55 is inserted into the outlet, the position detection means 80a, 80b, 80c detect whether the main body 1 is in the frontal direction.

If the main body 1 is not in the reference state, that is, in a state where it faces the front, the microcomputer 49a drives the stepping motor (drive motor) 82 to turn the main body 1 so that the main body 1 faces the front, and the main body 1 is the front It turns into a standby state when it turns to. When the main body 1 is in the front-facing state, it is in the standby state.

When the user operates the operation switch 43 from the standby state, an input signal is sent to the microcomputer 49 a of the control board 49 via the operation board unit 42. The front louver drive motor 54a and the rear louver drive motor 54b are driven, and the front louver 62 and the rear louver 63 open so as to blow the air to be delivered in the direction of the front diagonally upward.

Thereafter, the upper fan unit 9 and the lower fan unit 10 are driven to start the suction of air. The external air is drawn in through an air inlet 61 formed by the front panel 3 and the recess 4c in front of the side cover 4 and an air inlet (not shown) formed by the front panel 3 and the recess 5c in front of the side cover 5 . The sucked air is purified through the prefilters 36a and 36b, the HEPA filter 35 and the deodorizing filter 34, passes through the upper fan guard 32 and the upper fan casing cover opening 7b to the upper fan unit 9, and the lower fan guard 33. The air is drawn into the lower fan unit 10 through the lower fan casing cover opening 7d.

The purified air sucked into the upper fan unit 9 and the lower fan unit 10 is delivered from the front delivery port 64 and the rear delivery port 65, passes through the guard net 31, and is directed forward by the front louver 62 and the rear louver 63. The air is blown obliquely upward.

Furthermore, after that, the human detection sensor 45 starts sensing. The human detection sensor 45 detects whether a person is present in the room where the air purifier 100 is placed. When the presence of a person can not be detected, the microcomputer 49a does not turn the main body 1, and the front louver 62 and the rear louver 63 face obliquely forward about 45 degrees upward so that the delivered air can reach far Thus, the front louver drive motor 54a and the rear louver drive motor 54b are driven.

When the human detection sensor 45 detects that a human is present, the human detection sensor 45 sends a signal regarding information on the position where the human is, to the microcomputer 49 a of the control board 49 via the operation board unit 42. Based on the position information, the microcomputer 49a drives the stepping motor (drive motor) 82 to turn the main body 1 so that the air flow is directed in the direction in which a person is present.

When the stepping motor (drive motor) 82 is driven, the pinion gear 84 attached to the connecting shaft 83 connected to the stepping motor (drive motor) 82 is rotated. The pinion gear 84 rotates and moves by meshing with the rack gear 72.

As the pinion gear 84 moves, the lower main body case 29 pivots about the pivoting center shaft 76. Since the main body 1 is fastened to the lower main body case 29, it follows the rotation of the lower main body case 29 and rotates with respect to the support 2. Then, the front panel is oriented in the direction of the position where the person is present, and the air flow is directed in the direction where the person is present.

Then, the front louver drive motor 54a and the rear louver drive motor 54b are driven such that the front louver 62 and the rear louver 63 face upward approximately 90 degrees so that the delivered air does not directly hit the person. The operation timing of the human detection sensor 45 may be after the main body 1 faces the front and before the upper fan unit 9 and the lower fan unit 10 are driven.

As described above, in the air cleaner according to Embodiment 1 of the present invention, the lower portion of the main body is in the recess of the base 71. In the main body 1, a first wheel, a part of which protrudes from the lower surface of the lower portion, is supported in contact with the bottom surface of the recess of the base 71. Further, a sliding plate attached to the lower portion of the main body is supported in contact with a second wheel partially protruding from the upper surface of the base 71. For this reason, the stable rotation of the main body with safety can be performed.

The present invention can be used, for example, for an air cleaner in which a main body rotates.

Reference Signs List 1 main body, 2 support base, 3 front panel, 4 side cover, 4a handle portion, 4b design sheet, 4c recess, 5 side cover, 5a handle portion, 5b design sheet, 5c recess, 6 back cover, 7 front body case , 8 rear body case, 7a upper fan casing cover, 7b upper fan casing cover opening, 7c lower fan casing cover, 7d lower fan casing cover opening, 8a upper fan casing, 8b upper fan casing rear plate, 8c upper fan casing rear plate Recesses, 8d lower fan casing, 8e lower fan casing rear face plate, 8f lower fan casing rear face plate recessed portion, 9 upper fan unit, 10 lower fan unit, 21 fan, 22 fan motor, 22a fan motor rotation shaft, 23 Data holding member, 24 fan, 25 motor for fan, 25a motor rotating shaft for fan, 26 motor holding member, 27a washer, 27b washer, 28 nut, 29 lower main body case, 29a drive unit support portion, 29b position detection means holding , 29c position detection means holding portion, 29d position detection means holding portion, 29e body side wheel holding portion, 29f pivot center bearing, 29g flange, 29h flange, 31 guard net, 32 upper fan guard, 33 lower fan guard, 34 Deodorization filter, 35 HEPA filter, 36a pre-filter, 36b pre-filter, 40 upper unit, 41 operation display unit, 42 operation board unit, 43 operation switch, 44 design sheet, 45 people detection sensor, 4 Control board unit, 47 cover, 48 board case, 49 control board, 49a microcomputer, 49b output circuit, 50 board case, 51 cover, 52 lead wire cover, 53 space, 54a front louver drive motor, 54b rear louver drive motor, 55 Power cord, 61 air inlet, 62 front louver, 63 rear louver, 64 front outlet, 65 rear outlet, 66 air passage, 71 base, 71a sliding plate holding portion, 71b blocking wall, 71c position Slit for detection, 71d Position detection slit, 71e Position detection slit, 71f Support base side wheel holding portion, 71g Step, 71h annular recess, 71j recess, 71k bottom surface, 72 rack gear, 73 rotation center axis guide, 74 slide Moving plate, 74a opening, 74b Edge, 75 Slide plate presser, 76 Rotating central axis, 76a Grooved recess, 77 Body side wheel (first wheel), 78 Support side wheel (second wheel), 79 Stopper, 80a Position detection means , 80b position detection means, 80c position detection means, 81 body rotation drive unit, 82 stepping motor (drive motor), 83 connecting shaft, 83a clutch through hole, 84 pinion gear, 84a clutch groove, 84b inner circumferential wall, 85 Bearings, 86 holding members, 87 balls for clutches, 88 springs for clutches, 89 bases, 90 bodies, 91 wheels, 92 wheels, 100 air purifiers.

Claims

A base base having a lower surface, an upper surface provided parallel to the lower surface at a constant distance, and a side surface connecting the lower surface and the upper surface;
A main body provided above the upper surface of the base and rotatable in the lateral direction with respect to the base;
Equipped with
The main body has a lower main body case attached to the lower end of the main body,
The base is provided with a recess in a part of the upper surface,
A part of the lower main body case protrudes downward from the upper surface of the base and is accommodated in the recess.
The air purifier is rotatably supported by changing the height of the main body near the upper surface of the base and near the bottom surface of the recess.
The lower body case is provided with a drive unit having a drive motor, a pinion gear, and a connecting shaft for transmitting the rotation of the drive motor to the pinion gear, the drive unit rotating the body,
The air purifier according to claim 1, wherein the pinion gear is disposed in the recess.
The air purifier according to claim 2, wherein a rack gear meshing with the pinion gear is provided on an inner peripheral wall of the recess.
The air purifier according to any one of claims 2 and 3, further comprising a clutch mechanism at a connecting portion between the connecting shaft and the pinion gear.
Providing a first wheel at the lower end of the body,
The air according to any one of claims 1 to 4, wherein a second wheel is provided at a position outside the first wheel and above the first wheel of the base stand. Cleaner.
It has a disk-like sliding plate attached to the lower main body case and rotated in accordance with the rotation of the main body,
The air according to any one of claims 1 to 5, wherein a part of the outer periphery of the sliding plate and a plurality of sliding plate retainers disposed with a minute gap are attached to the base. Cleaner.
The sliding plate is provided with a downwardly curved edge around the entire outer periphery,
The air purifier according to claim 6, wherein the edge portion enters an annular recess provided in the base.