WO2014162773A1 - Cleaner - Google Patents

Abstract

[Problem] To provide a cleaner having good balance. [Solution] A cleaner (1) having: a housing (2) having a motor housing (4), a grip housing (5) joined to the rear of the motor housing (4), a dust-collecting housing (6) joined to the front of the motor housing (4), and a battery-holding housing (7) joined to the grip housing (5); and a brushless motor (15) accommodated in the motor housing (4). The cleaner also has a fan (61) rotated by the brushless motor (15), the brushless motor (15) being disposed forward of the battery-holding housing (7).

Description

Cleaner

The present invention relates to a cleaner using a brushless motor.

As disclosed in Patent Document 1, the cleaner includes a motor housing, a grip housing connected to the rear part of the motor housing, a dust collecting housing connected to the front part of the motor housing, and a battery holding housing connected to the grip housing. It has been known.

JP 2010-178773 A

In the conventional cleaner described above, since a battery pack having a large mass is attached to the battery holding housing located at the rear portion, the balance may be deteriorated.
As a motor housed in the motor housing, it is conceivable to adopt a brushless motor that is compact and has good power transmission efficiency. However, in the cleaner, vibration due to the rotation of the fan is easily transmitted to the housing. There is a need.

Therefore, an object of the present invention is to provide a cleaner with a good balance and a cleaner capable of obtaining a suitable vibration isolation effect.

In order to achieve the above object, the invention described in claim 1 is a cleaner, which is a motor housing, a grip housing connected to the rear part of the motor housing, a dust collecting housing connected to the front part of the motor housing, and a grip housing. A cleaner having a battery holding housing connected to the motor housing, and a brushless motor housed in the motor housing, the fan having a fan rotating by the brushless motor, and the brushless motor being arranged in front of the battery holding housing It is characterized by that.
The invention according to claim 2 is a cleaner, comprising a motor housing, a grip housing, a dust collecting housing, a battery holding housing, a brushless motor housed in the motor housing, and a brushless motor. The brushless motor is of an inner rotor type.
According to a third aspect of the present invention, in the configuration of the first or second aspect, a control circuit board for controlling the rotation of the brushless motor is housed inside the motor housing.
According to a fourth aspect of the present invention, in the configuration of the first aspect, the sensor circuit board is fixed to the brushless motor.
According to a fifth aspect of the present invention, in the configuration of the first aspect, an exhaust port is formed in the motor housing, and the accommodating portion of the control circuit board is adjacent to the exhaust port. It is.
According to a sixth aspect of the present invention, in the configuration of the third aspect, an operation switch for driving the brushless motor is provided, and the control circuit board faces the operation switch. is there.
According to a seventh aspect of the present invention, in the configuration of the first aspect, the brushless motor is housed in a case composed of a pair of left and right halved cases, and the case is connected to a base that is elastically held in the housing. It is a feature.
The invention according to claim 8 is a cleaner, which is a brushless motor, a motor housing that houses the brushless motor, a dust collecting housing that is provided in front of the motor housing and has a suction port disposed in a front portion thereof, and a motor It has a grip housing provided at the rear of the housing and a battery holding housing to which a battery can be attached, and an elastic member is disposed between the motor housing and the brushless motor.
The invention according to claim 9 is a cleaner, which is a brushless motor, a motor housing that houses the brushless motor, a dust collecting housing that is provided in front of the motor housing and has a suction port disposed in a front portion thereof, and a motor The motor housing has a grip housing provided at the rear of the housing and a battery holding housing to which a battery can be attached. The motor housing elastically holds the brushless motor.
The invention described in claim 10 is a cleaner, which is provided with a blower unit including a brushless motor and a fan, a motor housing that houses the blower unit, a front of the motor housing, and a suction port disposed at a front portion. And an elastic member interposed between the front portion of the blower unit and the motor housing.
The invention according to claim 11 is a cleaner, which is provided with a blower unit including a brushless motor and a fan, a motor housing that houses the blower unit, a front of the motor housing, and a suction port disposed at a front portion. And an elastic member interposed between the rear part of the blower unit and the motor housing.
The invention according to claim 12 is a cleaner, which is provided with a blower unit including a brushless motor and a fan, a motor housing that houses the blower unit, a front of the motor housing, and a suction port disposed at a front portion. And an elastic member disposed on the outer periphery of the brushless motor.

According to the present invention, a good balance can be expected and improvement in operability and workability can be expected.
In particular, according to the third and fourth aspects of the invention, wiring can be performed easily.
In particular, according to the fifth aspect of the present invention, the control circuit board can be cooled by the air flow.
In particular, according to the seventh aspect of the present invention, it is possible to effectively suppress the vibration of the brushless motor from being transmitted to the housing.
According to the eighth to twelfth aspects of the present invention, a suitable vibration isolating effect can be obtained.

It is a perspective view of the cleaner of form 1. It is a longitudinal cross-sectional view of the cleaner of form 1. FIG. 3 is a sectional view taken along line AA in FIG. 2. FIG. 3 is a sectional view taken along line BB in FIG. It is a disassembled perspective view of a brushless motor, a case, and a base. FIG. 3 is a cross-sectional view taken along the line CC of FIG. It is a longitudinal cross-sectional view of the cleaner of form 2. FIG. 8 is a sectional view taken along line DD of FIG. It is a perspective view of a motor housing part. FIG. 9 is a cross-sectional view taken along the line EE of FIG. It is a longitudinal cross-sectional view of the cleaner of form 3. FIG. 12 is a sectional view taken along line FF in FIG. 11. FIG. 12 is a sectional view taken along line GG in FIG. It is a perspective view of the cleaner of form 4. It is a longitudinal cross-sectional view of the cleaner of form 4. FIG. 16 is a sectional view taken along line AA in FIG. FIG. 16 is a sectional view taken along line BB in FIG. It is a disassembled perspective view of a brushless motor, a case, and a base. It is CC sectional view taken on the line of FIG. FIG. 16 is a sectional view taken along line DD in FIG. 15. It is a longitudinal cross-sectional view of the cleaner of form 5. It is a perspective view of the left half housing and a ventilation unit. It is a longitudinal cross-sectional view of the cleaner of form 6. It is a disassembled perspective view of a brushless motor, a case, and a base. FIG. 24 is a sectional view taken along line EE in FIG. 23.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Form 1]
FIG. 1 is a perspective view showing an example of the cleaner, FIG. 2 is a longitudinal sectional view thereof, and the cleaner 1 has a housing 2 in which left and right half housings 2a, 2b are assembled by screws 3, 3,. The housing 2 is connected to a motor housing 4 positioned substantially in the center in the front-rear direction (the right side in FIG. 1 is the front), a grip housing 5 connected to the rear portion of the motor housing 4, and a front portion of the motor housing 4. A dust collecting housing 6 and a battery holding housing 7 connected to the grip housing 5 are formed.

First, a battery pack 8 serving as a power source is mounted on the battery holding housing 7. The battery pack 8 is mounted by sliding slide rails 9 and 9 provided on the left and right sides of the upper surface between the guide rails 10 and 10 provided on the left and right of the battery holding housing 7 and sliding them forward. In a mounted state, terminals (not shown) provided on the battery pack 8 are coupled to the terminal block 11 provided on the battery holding housing 7 so that both are electrically connected. In this state, the battery pack 8 is located at the end of the housing 2. A button 12 that can be removed from the battery holding housing 7 by a finger operation is provided on the rear surface of the battery pack 8, and a strap 13 is provided between the grip housing 5 and the battery holding housing 7 at the top thereof. It has been.

On the other hand, the control circuit board 14 and the brushless motor 15 are accommodated in the motor housing 2, respectively. First, the control circuit board 14 is molded with resin and is held in an inclined posture with the front end facing upward by receiving seats 16 and 16 erected on the inner surfaces of the half housings 2a and 2b, respectively. 17 is electrically connected to the terminal block 11. As shown in FIG. 3, a microcomputer 18 is mounted on the upper surface of the control circuit board 14, and six switching elements 19, 19. -Is installed. A smoothing capacitor 14 a for smoothing the voltage input from the battery power supply line 17 is mounted on the upper surface of the control circuit board 14. Here, since the battery power supply line 17, the signal lead wire 41, the lead wires 26 and 27, and the switch lead wire 21, which will be described later, are all connected to the upper surface of the control circuit board 14, the assembly of the control circuit board 14 is possible. Will improve.

Further, the control circuit board 14 is electrically connected to the operation switch 20 provided on the upper portion of the grip housing 5 via the switch lead wires 21 and 21. This operation switch 20 is a pressing type in which the front side is an ON button 22 and the rear side is an OFF button 23. In front of the operation switch 20, a notification LED 24 for notifying the remaining battery level and an illumination LED 25 are accommodated. Then, they are electrically connected to the control circuit board 14 by lead wires 26 and 27, respectively. Reference numeral 28 denotes a lens provided on the irradiation side of the LEDs 24 and 25.

The brushless motor 15 includes a stator core 29 around which a coil 31 is wound via an electrical insulating member 30 on the inner peripheral side, a rotor shaft 34 having a rotating shaft 33 at the center, and a rotor 32 provided with a rotor core 34 and four permanent magnets. A disc-shaped sensor circuit board 35 is screwed to the rear end of the electrical insulating member 30. On the front surface of the sensor circuit board 35, as shown in FIG. 4, three rotation detecting elements 36, 36,... For detecting the position of the magnet of the rotor 32 and outputting a rotation detection signal are arranged. The coil 31 is electrically connected to the sensor circuit board 35 by extending the terminal rearward and penetrating the sensor circuit board 35. 37 is a screw for attaching the sensor circuit board 35, 38 is a protrusion protruding from the rear end face of the electrical insulating member 30 and fitting into a small hole of the sensor circuit board 35, and 39 is a coil connecting portion.
Further, an upward projecting piece 35a is formed on the upper part of the sensor circuit board 35, to which the output power supply line 40 from the control circuit board 14 and the signal lead wire 41 of the rotation detecting element 36 are respectively connected. ing. Since the output power supply line 40 and the signal lead wire 41 are connected to the rear surface of the sensor circuit board 35, the assemblability is improved.

The brushless motor 15 including the sensor circuit board 35 is held in a cylindrical case 42 having a front portion opened and a rear portion closed. As shown in FIG. 5, this case 42 is divided into left and right half cases 43, 43 including a semicircular rear plate 44 and a semi-cylindrical side plate 45. The bosses 46 provided and the bosses 47, 47 protruding from the upper and lower sides of the side plates 45 are joined together by screws 48. The left and right rear plates 44, 44 are respectively provided with bearing holding recesses 44a for holding a bearing 49 that supports the rear end of the rotary shaft 33 in the assembled state. Further, at the upper end of each side plate 45, behind the boss 47, a notch 50 is formed through the protruding piece 35a of the sensor circuit board 35, and a plurality of through holes 51, 51 are formed on the side surface. A pair of connecting pieces 52, 52 are projected in the front.

The case 42 is connected to a base 53 disposed in front of the case 42. The base 53 includes an inner ring 54 having a slightly larger diameter than the case 42, an outer ring 55 having a larger diameter than the inner ring 54, and a spiral rib 56 that concentrically connects the inner ring 54 and the outer ring 55. , 56... And a closing plate 57 that closes the front of the inner ring 54. Four bosses 58, 58... Corresponding to the connecting pieces 52, 52 of the case 42 are formed on the outer side of the inner ring 54. Therefore, by screwing the screw 59 penetrating each connecting piece 52 into the boss 58, the case 42 is inserted into the inner ring 54 and connected to the closing plate 57 as shown in FIG. In this state, the rotating shaft 33 of the brushless motor 15 passes through the closing plate 57 and protrudes forward. A bearing 60 is supported by a bearing holding portion 57 a provided on the closing plate 57 and supports the rotary shaft 33. A fan 61 is fixed to the front end of the rotary shaft 33.

Further, a baffle body 62 is provided in front of the base 53. The baffle body 62 has a cup shape larger in diameter than the fan 61 that covers the fan 61 from the front, and a large diameter portion 63 formed at the rear end is fitted to the outer ring 55 of the base 53 so that the baffle body 62 is 53. At the front center of the baffle body 62, a projecting portion 64 having a vent hole (not shown) is formed.
The base 53 and the baffle body 62 are held between partition walls 65 and 65 that are erected on the inner surface of the motor housing 4 at a predetermined interval in the front-rear direction. A rubber ring 66 is packaged. Here, the front end of the rubber ring 66 abuts the front partition wall 65 beyond the front end of the baffle body 62, and the rear end of the rubber ring 66 abuts the rear partition wall 65 beyond the rear end of the base 53. Yes. Therefore, the base 53 and the baffle body 62 are held by the motor housing 4 via the rubber ring 66 without directly contacting the motor housing 4.

Reference numeral 67 denotes a protrusion protruding from the outer periphery of the outer ring 55, and the rubber ring 66 has a protrusion 68 into which the protrusion 67 is fitted. The protrusions 68 are fitted into recesses (not shown) provided in the inner surface of the motor housing 4 so that the rotation of the rubber ring 66 and the base 53 is restricted.
On the other hand, 69 is an exhaust port formed on the side surface of the motor housing 4 behind the brushless motor 15, and a sponge plate 70 that covers the exhaust port 69 from the inside is attached to the inner surface of the motor housing 4.

The dust collection housing 6 has a dust collection chamber 71 formed therein, and a suction cylinder 72 communicating with the dust collection chamber 71 is mounted in front of the dust collection chamber 71. 73 is a check valve provided at the rear end of the suction cylinder 72. The dust collection chamber 71 accommodates a bag-shaped paper pack 74 that communicates with the suction cylinder 72. Furthermore, an opening 75 is formed in the upper part of the dust collecting housing 6, and a lid 76 is provided in the opening 75. The lid 76 is rotatably connected about a shaft 77 disposed at the upper rear of the dust collecting housing 6 and is urged to rotate to the open side via a torsion spring 78. When the lid 76 is closed, The front end of the lid 76 is engaged with a stopper 79 provided at the front end of the opening 75 to maintain the closed state. When the button 80 provided at the front end of the dust collecting housing 6 is pushed in, the lid 76 with the stopper 79 released is opened.

In the cleaner 1 configured as described above, when the ON button 22 of the operation switch 20 provided on the grip housing 5 is pressed, power is supplied from the battery pack 8 and the brushless motor 15 is driven. That is, the microcomputer 18 of the control circuit board 14 obtains a rotation detection signal indicating the position of the magnet of the rotor 32 from the rotation detection element 36 of the sensor circuit board 35 via the signal lead wire 41, thereby rotating the rotor 32. The state is acquired, the ON / OFF of each switching element 19 is controlled according to the acquired rotation state, and the rotor 32 is caused to flow through each coil 31 of the stator core 29 through the output power line 40 in order. It is intended to rotate.

Thus, when the rotor 32 rotates and the rotating shaft 33 and the fan 61 rotate, the outside air is sucked from the suction cylinder 72 and passes through the paper pack 74 in the dust collecting chamber 71, and then passes through the protruding portion 64 of the baffle body 62. 61. A sponge plate 71 a is provided between the paper pack 74 and the protrusion 64 at the rear of the dust collection chamber 71. The air sent to the outer periphery of the fan 61 is turned rearward by the baffle body 62, is rectified between the inner ring 54 and the outer ring 55 of the base 53 through the ribs 56, flows backward, and is exhausted. It is discharged from the mouth 69 to the outside. Due to the air flow, the dust sucked together with the outside air from the suction cylinder 72 is captured by the paper pack 74 and stored in the paper pack 74. If dust accumulates, the paper pack 74 can be taken out from the opening 75 if the cover 76 is opened by pressing the button 80.

Here, since the air that has passed through the upper portion of the base 53 flows along the control circuit board 14 adjacent to the exhaust port 69, the control circuit board 14 and the switching element 19 on the lower surface thereof are also passed through the mold by this air flow. To be cooled. Further, since the notch 50 and the through hole 51 are formed in the case 42 that holds the brushless motor 15, a part of the air flow passes through the case 42, and the sensor circuit board is caused by this air flow. 35 is also cooled.
Since the base 53 supporting the brushless motor 15 is held by the motor housing 4 through the rubber ring 66 together with the baffle body 62, vibration generated by the rotation of the fan 61 is not easily transmitted to the motor housing 4. In particular, here, since the rear bearing 49 that supports the rotating shaft 33 is held by the case 42 and the brushless motor 15 is not in contact with the motor housing 4, the vibration of the brushless motor 15 is less likely to be transmitted. .

Thus, according to the cleaner 1 of the said form 1, since the brushless motor 15 is arrange | positioned ahead of the battery holding | maintenance housing 7, the whole balance becomes favorable and it can anticipate operativity and workability | operativity improvement.
Further, since the control circuit board 14 is accommodated in the motor housing 4, the distance between the control circuit board 14 and the brushless motor 15 is reduced and wiring can be performed easily. In particular, since the sensor circuit board 35 is fixed to the brushless motor 15, wiring between the control circuit board 14 and the sensor circuit board 35 is facilitated.
Further, the brushless motor 15 is accommodated in a case 42 including a pair of left and right halved cases 43, and the case 42 is connected to a base 53 that is elastically held in the housing 2. Transmission to the housing 2 can be effectively suppressed.

In the first aspect, the brushless motor is accommodated in a case composed of a pair of half cases and the case is assembled to the base. However, the case is used as a base by using a brushless motor housed in a case that is not half. You may make it assemble to.

Next, another embodiment of the present invention will be described. However, the same components as those in the first embodiment are denoted by the same reference numerals and redundant description is omitted.

[Form 2]
In the cleaner 1A shown in FIG. 7, as shown in FIG. 8, the control circuit board 14 is divided into a first control circuit board 14A on which a microcomputer 18 is mounted and a second control circuit board 14B on which a switching element 19 is mounted. This is different from the first embodiment. Here, one of the receiving seats 16 is provided with a partitioning portion 16a that is inserted between the control circuit boards 14A and 14B so that the control circuit boards 14A and 14B are not in contact with each other. The second control circuit board 14B is provided with a heat sink 81 that covers the switching element 19 and dissipates heat from the switching element 19. A lead wire 82 connects the control circuit boards 14A and 14B.

The brushless motor 15 here is not covered with a case, and the stator core 29 is directly inserted into the inner ring 54 of the base 53, and as shown in FIGS. 9 and 10, the left and right half housings 2a, 2b It is hold | maintained by the assembly seats 83 and 83 each standingly arranged by the inner surface. 57b is an abutting portion that stands on the rear surface of the closing plate 57 and positions the stator core 29 when the front end of the electrical insulating member 30 on the front side comes into contact therewith.
The assembly seat 83 includes a bearing holding portion 84 having a bearing holding recess 84 a that holds the bearing 49 on the rear end side of the rotating shaft 33, and a stator holding portion 85 that holds the stator core 29. A stepped shape 84 is higher than the stator holding portion 85.

Therefore, also in the cleaner 1A of the above-described form 2, by arranging the brushless motor 15 in front of the battery holding housing 7, the overall balance is improved and operability and workability can be expected to be improved.
In addition, since the first and second control circuit boards 14A and 14B are accommodated in the motor housing 4, the distance between the control circuit boards 14A and 14B and the brushless motor 15 is reduced, and wiring can be performed easily. In particular, since the sensor circuit board 35 is fixed to the brushless motor 15, wiring between the control circuit board 14 and the sensor circuit board 35 is facilitated.
In particular, since a case for holding the brushless motor 15 is not used here, the number of housings used as a whole is smaller than that of the first embodiment, which is advantageous in terms of cost.

[Form 3]
In the cleaner 1B shown in FIG. 11, the switching element 19 is not provided in the control circuit board 14 as shown in FIG. 12, but is mounted on the rear surface of the sensor circuit board 35 as shown in FIG. Is different from Form 1. Other configurations are the same as those of the first embodiment.
Therefore, also in the cleaner 1B of the third aspect, by arranging the brushless motor 15 in front of the battery holding housing 7, the overall balance is improved and operability and workability can be expected to be improved.
Further, since the control circuit board 14 is accommodated in the motor housing 4, the distance between the control circuit board 14 and the brushless motor 15 is reduced, and wiring can be performed easily. In particular, since the sensor circuit board 35 is fixed to the brushless motor 15, wiring between the control circuit board 14 and the sensor circuit board 35 is facilitated.

[Form 4]
FIG. 14 is a perspective view showing an example of the cleaner, FIG. 15 is a longitudinal sectional view thereof, and the cleaner 101 has a housing 102 in which left and right half housings 102a, 102b are assembled by screws 103, 103,. The housing 102 is connected to a motor housing 104 located substantially in the center in the front-rear direction (the right side in FIG. 14 is the front), a grip housing 105 connected to the rear portion of the motor housing 104, and a front portion of the motor housing 104. A dust collection housing 106 and a battery holding housing 107 connected to the grip housing 105 are formed.

First, a battery pack 108 serving as a power source is attached to the battery holding housing 107. The battery pack 108 is mounted by fitting slide rails 109, 109 provided on the left and right sides of the upper surface between the guide rails 110, 110 provided on the left and right of the battery holding housing 107 from the rear and sliding them forward. In a mounted state, terminals (not shown) provided on the battery pack 108 are coupled to the terminal block 111 provided on the battery holding housing 107, and both are electrically connected. In this state, the battery pack 108 is located at the end of the housing 102. A button 112 that can be removed from the battery holding housing 107 by a finger operation is provided on the rear surface of the battery pack 108, and a strap 113 is provided between the grip housing 105 and the battery holding housing 107 at the top thereof. It has been.

On the other hand, a control circuit board 114 and a brushless motor 115 are accommodated in the motor housing 102, respectively. First, the control circuit board 114 is molded with resin, and is held in an inclined posture with the front end facing upward by receiving seats 116 and 116 erected on the inner surfaces of the half housings 102a and 102b, respectively. It is electrically connected to the terminal block 111 via 117. Further, as shown in FIG. 16, a microcomputer 118 is mounted on the upper surface of the control circuit board 114, and six switching elements 119, 119, 119 for controlling the brushless motor 115 are mounted on the lower surface of the control circuit board 114. -Is installed. A smoothing capacitor 120 for smoothing the voltage input from the battery power line 117 is mounted on the upper surface of the control circuit board 114. Here, since the battery power supply line 117, the signal lead wire 142, the lead wires 127 and 128, and the switch lead wire 122, which will be described later, are all connected to the upper surface of the control circuit board 114, the assembly of the control circuit board 114 is possible. Will improve.

Furthermore, the control circuit board 114 is electrically connected to the operation switch 121 provided on the upper portion of the grip housing 105 via the switch lead wires 122 and 122. The operation switch 121 is a push type that has an ON button 123 on the front side and an OFF button 124 on the rear side. In front of the operation switch 121, a notification LED 125 that informs the remaining battery level and an illumination LED 126 are accommodated. Thus, the control circuit board 114 is electrically connected by lead wires 127 and 128, respectively. Reference numeral 129 denotes a lens provided on the irradiation side of the LEDs 125 and 126.

The brushless motor 115 includes a stator core 130 in which a coil 132 is wound via an electric insulating member 131 on the inner peripheral side, a rotating shaft 134 in the center, and a rotor 133 including a rotor core 135 and four permanent magnets. A disk-shaped sensor circuit board 136 is screwed to the rear end of the electrical insulating member 131. On the front surface of the sensor circuit board 136, as shown in FIG. 17, three rotation detecting elements 137, 137,... For detecting the position of the magnet of the rotor 133 and outputting a rotation detection signal are arranged. A coil 132 is electrically connected to the sensor circuit board 136 by extending the terminal rearward and penetrating the sensor circuit board 136. Reference numeral 138 denotes a screw for attaching the sensor circuit board 136, 139 is a protrusion protruding from the rear end surface of the electric insulating member 131 and fitted into a small hole of the sensor circuit board 136, and 140 is a coil connecting portion.
Further, an upward projecting piece 136a is formed on the upper part of the sensor circuit board 136, and an output power supply line 141 from the control circuit board 114 and a signal lead wire 142 of the rotation detecting element 137 are connected to the upper protruding piece 136a, respectively. ing. Since the output power supply line 141 and the signal lead wire 142 are connected to the rear surface of the sensor circuit board 136, the assemblability is improved.

The brushless motor 115 including the sensor circuit board 136 is held in a cylindrical case 143 that is open at the front and closed at the rear. As shown in FIG. 18, the case 143 is divided into two right and left half cases 144, 144 composed of a semicircular rear plate 145 and a semi-cylindrical side plate 146. The projecting bosses 147 and 147 are assembled by being coupled to each other with a screw 148. The left and right rear plates 145 and 145 are respectively provided with bearing holding recesses 150 for holding a bearing 149 that supports the rear end of the rotating shaft 134 in the assembled state. Further, at the upper end of each side plate 146, behind the boss 147, a notch 151 that penetrates the protruding piece 136a of the sensor circuit board 136 is formed, and a plurality of through holes 152, 152 are formed on the side surface. A pair of connecting pieces 153 and 153 protrude from the front.

The case 143 is connected to a base 154 disposed in front of the case 143. The base 154 includes an inner ring 155 having a slightly larger diameter than the case 143, an outer ring 156 having a larger diameter than the inner ring 155, and a spiral rib 157 that concentrically connects the inner ring 155 and the outer ring 156. , 157... And a closing plate 158 that closes the front of the inner ring 155. Four bosses 159, 159, corresponding to the connecting pieces 153, 153 of the case 143 are formed on the outer side of the inner ring 155. Therefore, by screwing the screw 160 penetrating each connecting piece 153 into the boss 159, the case 143 is inserted into the inner ring 155 and connected to the closing plate 158 as shown in FIG. In this state, the rotating shaft 134 of the brushless motor 115 passes through the closing plate 158 and protrudes forward. Reference numeral 161 denotes a bearing that is held by a bearing holding portion 162 provided on the closing plate 158 and supports the rotating shaft 134. A fan 163 is fixed to the front end of the rotating shaft 134.

Further, a baffle body 164 is provided in front of the base 154. The baffle body 164 has a cup shape larger in diameter than the fan 163 that covers the fan 163 from the front, and the baffle body 164 is fitted to the outer ring 156 of the base 154 by fitting a large diameter portion 165 formed at the rear end. 154. At the front center of the baffle body 164, a projecting portion 166 that forms a vent 166a (FIG. 20) is formed.
The base 154 and the baffle body 164 in which the brushless motor 115 is incorporated in this way are erected on the inner surfaces of the half housings 102 a and 102 b as the air blowing unit U, and partition walls 167 that partition the motor housing 104 and the dust collecting housing 106. , 167, but here, the blower unit U is elastically held in the motor housing 104 by using a rubber cover 168 and a rubber cap 169 as elastic members.

First, the rubber cover 168 covers the peripheral surface of the outer ring 156 of the base 154 and the peripheral surface of the baffle body 164, and covers the front portion of the baffle body 164 with the front tapered and the front end of the cover portion 170. As shown in FIG. 20, the cover portion 170 is formed with a protruding portion 170 a that fits with the large-diameter portion 165 of the baffle body 164, and is formed in the cover portion 170. A ring-shaped concave groove 172 is formed on the outer periphery of 171. In addition, a circular stepped portion 170b is formed at the front portion of the cover portion 170 so as to contact the half-ring-shaped small walls 167b erected on the respective half- split housings 102a and 102b behind the partition wall 167. Yes. On the other hand, each partition wall 167 is formed with a semicircular cutout 167a, and the cylindrical portion 171 is set at a position where the concave groove 172 is fitted into the cutout 167a to halve the housings 102a and 102b. As a result, the rubber cover 168 is held at a position where the cylindrical portion 171 is sandwiched between the partition walls 167, and the baffle body 164 is positioned at a position where the protruding portion 166 of the baffle body 164 protrudes into the cylindrical portion 171.
Reference numeral 173 denotes a protrusion projecting from the outer periphery of the outer ring 156, and a protrusion 174 into which the protrusion 173 is fitted is formed in the cover part 170. The protrusions 174 are fitted into recesses (not shown) provided in the inner surface of the motor housing 104, so that the rotation of the cover 170 and the base 154 is restricted. The rear end of the cover portion 170 is a reduced diameter portion 170c that protrudes rearward from the base 154 and has a tapered shape.

Next, the rubber cap 169 has a rear surface portion 169a and a peripheral portion 169b, and is attached across the bearing holding recesses 150 and 150 of each half case 144. As shown in FIG. 20, holding rods 175 and 175 protrude from the inner surfaces of the left and right half housings 102 a and 102 b toward the center, and have a U-shaped cross section formed at the tip of each holding rod 175. The rear end of the case 143 is held by the holding rods 175 and 175 via the rubber cap 169 by fitting the front end portion 176 of the rubber cap 169 half by half. In this state, the holding rod 175 is not in contact with the case 143.
177, 177,... Are exhaust ports formed on the side surface of the motor housing 104 behind the holding rod 175. A sponge plate 178 is attached to the inner surface of the motor housing 104 to cover the exhaust port 177 from the inside. Yes.

The dust collection housing 106 has a dust collection chamber 179 formed therein, and a suction cylinder 180 that opens a suction port 180a at the front end that communicates with the dust collection chamber 179 is mounted in front of the dust collection chamber 179. Reference numeral 181 denotes a check valve provided at the rear end of the suction cylinder 180. The dust collection chamber 179 accommodates a bag-shaped paper pack 182 that communicates with the suction cylinder 180. Further, an opening 183 is formed in the upper part of the dust collecting housing 106, and a lid 184 is provided in the opening 183. The lid 184 is rotatably connected around a shaft 185 disposed at the upper rear of the dust collecting housing 106 and is urged to rotate to the open side via a torsion spring 186. When the lid 184 is closed, The front end of the lid 184 is locked to a stopper 187 provided at the front end of the opening 183, and the closed state is maintained. When the button 188 provided at the front end of the dust collecting housing 106 is pushed in, the lid 184 with the stopper 187 released is opened.

In the cleaner 101 configured as described above, when the ON button 123 of the operation switch 121 provided on the grip housing 105 is pressed, power is supplied from the battery pack 108 and the brushless motor 115 is driven. That is, the microcomputer 118 of the control circuit board 114 obtains a rotation detection signal indicating the position of the magnet of the rotor 133 from the rotation detection element 137 of the sensor circuit board 136 through the signal lead wire 142, thereby rotating the rotor 133. The state is acquired, the ON / OFF of each switching element 119 is controlled according to the acquired rotation state, and the rotor 133 is made to flow through each coil 132 of the stator core 130 through the output power line 141 in order. It is intended to rotate.

Thus, when the rotor 133 rotates and the rotating shaft 134 and the fan 163 rotate, the outside air is sucked from the suction cylinder 180 and passes through the paper pack 182 in the dust collecting chamber 179, and passes through the protruding portion 166 of the baffle body 164. To 163. The air sent out to the outer periphery of the fan 163 is changed in the rear direction by the baffle body 164, and is rectified between the inner ring 155 and the outer ring 156 of the base 154 through the ribs 157 and flows rearward. It is discharged from the mouth 177 to the outside. Due to this air flow, the dust sucked together with the outside air from the suction cylinder 180 is captured by the paper pack 182 and stored in the paper pack 182. If dust accumulates, the paper pack 182 can be taken out from the opening 183 by opening the lid 184 by pushing the button 188.

Here, since the air that has passed through the upper portion of the base 154 flows along the control circuit board 114 adjacent to the exhaust port 177, the control circuit board 114 and the switching element 119 on the lower surface thereof also pass through the mold by this air flow. To be cooled. In addition, since a notch 151 and a through hole 152 are formed in the case 143 that holds the brushless motor 115, a part of the air flow passes through the case 143, and this air flow causes the sensor circuit board. 136 is also cooled.

Since the blower unit U is elastically held in the housing 102 via the rubber cover 168 and the rubber cap 169, vibration generated by the rotation of the fan 163 is difficult to be transmitted to the housing 102. In particular, here, since the cylindrical portion 171 of the rubber cover 168 is held by the housing 102, it can be held near the center of the fan 163 where the vibration is small, and the vibration transmitted to the housing 102 can be effectively reduced. In addition, since the two locations where the vibration of the blower unit U is small are elastically supported at the same time, the effect of reducing the vibration from the blower unit U to the housing 102 is increased. The tubular portion 171 also serves to seal between the rubber cover 168 and the partition wall 167 by fitting the partition wall 167 into the concave groove 172. Particularly here, the stepped portion 170b of the cover portion 170 is in contact with the small wall 167b on the rear side, so that the sealing performance is further improved.

As described above, according to the cleaner 101 of the fourth aspect, the rubber cover 168 and the rubber cap 169 are interposed between the blower unit U and the motor housing 104, so that a suitable vibration isolating effect can be obtained.
Note that the shapes of the rubber cover and the rubber cap, which are elastic members, can be changed as appropriate, and the holding rods may protrude from the top and bottom instead of the left and right sides, or the number of holding rods may be increased.

Next, another embodiment of the present invention will be described. However, the same components as those in the fourth embodiment are denoted by the same reference numerals and redundant description is omitted.

[Form 5]
The cleaner 101A shown in FIG. 21 is different from Embodiment 4 in that the rear end of the case 143 that accommodates the brushless motor 115 is not held by the motor housing 104 via a rubber cap. Here, as shown in FIG. 22, bosses 189 are respectively provided in the bearing holding recesses 150 of the rear plate 145 of each half case 144, and the bosses 189 are coupled to each other by screws 190. We are assembling.

Therefore, also in the cleaner 101 </ b> A according to the fifth aspect, the rubber cover 168 is interposed between the blower unit U and the motor housing 104, so that a suitable vibration isolation effect can be obtained.
In particular, since a rubber cap and a holding rod are not provided here, it is more advantageous than the fourth embodiment in terms of cost.

[Form 6]
In the cleaner 101B shown in FIG. 23, the side surface, not the rear surface of the case 143, is elastically held. As shown in FIGS. 24 and 25, the side plates 146 of the half case 144 are provided with symmetric cylindrical portions 191 in the left-right direction orthogonal to the axis of the rotating shaft 134, respectively. In addition, a rubber sleeve 192 is accommodated as an elastic member disposed on the radially outer side of the brushless motor 115. On the other hand, on the inner surface of the half housings 102a and 102b, a support boss 193 having a base end as a large diameter portion 194 and a distal end as a small diameter portion 195 is projected at a position coaxial with each cylindrical portion 191. 195 is inserted into the rubber sleeve 192 so that the large diameter portion 194 contacts the end surface of the rubber sleeve 192. In this state, the small diameter portion 195 is not in contact with the case 143.

Therefore, also in this cleaner 101 </ b> B, the rubber cover 168 and the rubber sleeve 192 are interposed between the blower unit U and the motor housing 104, so that a suitable vibration isolation effect can be obtained. Here, however, excessive elastic deformation of the rubber sleeve 192 is prevented by contacting the tip of the small diameter portion 195 and the bottom of the cylindrical portion 191.
In particular, since the holding position by the rubber sleeve 192 is close to the center of gravity of the brushless motor 115, further improvement in the vibration-proofing effect can be expected.
In this embodiment, the cylindrical portion is provided on the case side to accommodate the rubber sleeve, and the support boss is provided on the housing side. On the contrary, the support boss is provided on the case side and the cylindrical portion is provided on the housing side. A rubber sleeve may be accommodated.

In addition, in common with each embodiment, the positions of the control circuit board and the operation switch can be appropriately changed, and the operation switch may be a trigger type instead of a push button type. On the other hand, the battery pack is not limited to the above-described form, for example, adopting a structure for inserting and attaching the battery pack without being limited to the slide attachment.
In another embodiment, six switching elements (if the number of switching elements is plural, can be appropriately set according to the number of coils) are mounted on a sensor circuit board. In this case, it may be arranged between the rear plate and the sensor circuit board.

1, 1A, 1B · Cleaner · 2 · Housing · 4 · Motor housing · 5 · Grip housing · 6 · Dust collection housing · 7 · Battery holding housing · 8 · Battery pack · 14 · Control Circuit board, 15 ... Brushless motor, 19 ... Switching element, 20 ... Operation switch, 29 ... Stator core, 30 ... Electrical insulation member, 32 ... Rotor, 33 ... Rotary shaft, 35 ... Sensor circuit board , 36 ·· Rotation detecting element, 42 ·· Case, 43 ·· Half case, 53 ·· Base, 61 · · Fan, 62 · · Baffle body, 66 · · Rubber ring, 69 · · Exhaust port, · · · · Dust collection chamber, 72 ·· Suction cylinder, 74 · · Paper pack, 76 · · Lid, 83 · · Assembly seat, 101, 101A, 101B · · Cleaner, 102 · · Housing, 104 ..Motor housing, 105 ..Grip housing, 106 ..Dust collecting housing, 107 ..Battery holding housing, 108 ..Battery pack, 114 ..Control circuit board, 115 ..Brushless motor, 119 ..Switching element, 121 ..Operation switch 130 ..Stator core 131 ..Electric insulation member 133 ..Rotor 134 ..Rotating shaft 136 ..Sensor circuit board 137 ..Rotation detecting element 143. Half case, 154, base, 163, fan, 164, baffle body, 168, rubber cover, 169, rubber cap, 170, cover part, 171, cylindrical part, 175, holding rod 177 ... Exhaust port, 179 ... Dust collection chamber, 180 ... Suction cylinder, 182 ... Paper pack, 184 ... lid 92 ... rubber sleeve, 193 ... support boss.

Claims (12)

1. A cleaner,
   A housing having a motor housing, a grip housing connected to a rear portion of the motor housing, a dust collecting housing connected to a front portion of the motor housing, and a battery holding housing connected to the grip housing;
   A brushless motor housed in the motor housing;
   A fan that is rotated by the brushless motor,
   The cleaner characterized by arrange | positioning the said brushless motor ahead of the said battery holding | maintenance housing.
2. A cleaner,
   A housing having a motor housing, a grip housing, a dust collecting housing, and a battery holding housing;
   A brushless motor housed in the motor housing;
   A fan that is rotated by the brushless motor,
   The brushless motor is an inner rotor type cleaner.
3. 3. The cleaner according to claim 1, wherein a control circuit board for controlling the rotation of the brushless motor is accommodated in the motor housing.
4. The cleaner according to claim 1, wherein a sensor circuit board is fixed to the brushless motor.
5. An exhaust port is formed in the motor housing,
   The cleaner according to claim 1, wherein the accommodating portion of the control circuit board is adjacent to the exhaust port.
6. An operation switch for driving the brushless motor is provided,
   The cleaner according to claim 3, wherein the control circuit board faces the operation switch.
7. The cleaner according to claim 1, wherein the brushless motor is accommodated in a case composed of a pair of left and right halved cases, and the case is connected to a base that is elastically held in the housing.
8. A cleaner,
   A brushless motor,
   A motor housing that houses the brushless motor;
   A dust collecting housing provided in front of the motor housing and having a suction port disposed at a front portion;
   A grip housing provided at the rear of the motor housing;
   A battery holding housing to which a battery can be attached,
   A cleaner characterized in that an elastic member is disposed between the motor housing and the brushless motor.
9. A cleaner,
   A brushless motor,
   A motor housing that houses the brushless motor;
   A dust collecting housing provided in front of the motor housing and having a suction port disposed at a front portion;
   A grip housing provided at the rear of the motor housing;
   A battery holding housing to which a battery can be attached,
   The cleaner, wherein the motor housing elastically holds the brushless motor.
10. A cleaner,
    A blower unit comprising a brushless motor and a fan;
    A motor housing that houses the blower unit;
    A dust collecting housing provided in front of the motor housing and having a suction port disposed at a front portion thereof;
    A cleaner characterized in that an elastic member is interposed between a front portion of the blower unit and the motor housing.
11. A cleaner,
    A blower unit comprising a brushless motor and a fan;
    A motor housing that houses the blower unit;
    A dust collecting housing provided in front of the motor housing and having a suction port disposed at a front portion thereof;
    A cleaner characterized in that an elastic member is interposed between a rear portion of the blower unit and the motor housing.
12. A cleaner,
    A blower unit comprising a brushless motor and a fan;
    A motor housing that houses the blower unit;
    A dust collecting housing provided in front of the motor housing and having a suction port disposed at a front portion thereof;
    The cleaner characterized by arrange | positioning the elastic member in the outer periphery of the said brushless motor.

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