JP2015208577A - Dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve movement operability by using a DC power supply to drive a motor that rotates a dust collection fan.SOLUTION: A dust collector comprises a body housing 2a, a motor 3 that is contained in the body housing 2a, a dust collection fan 4 that is rotated by the motor 3, and a detachable battery pack 40 serving as a DC power supply that supplies power to the motor, where the battery pack 40 is cooled by exhaust air from the dust collection fan 4. A portion of the exhaust air is blown onto a connection terminal part 25 for connecting to the battery pack 40.

Description

  The present invention relates to a dust collector capable of using a DC power source such as a battery pack as a power source for a motor.

  Conventionally, there is a dust collector as shown in Patent Document 1 below, and a caster is provided at the bottom of a tank (dust case), and the power cord can be wound and unwound in the power cord storage portion with good workability. An improved operability has been proposed. However, since the commercial AC power supply is driven by the power cord, the power cord is unavoidably routed and the movement range is limited.

JP 2008-284241 A

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a dust collector capable of improving movement operability by driving a motor using a DC power source.

  The first aspect of the present invention is a dust collector. The dust collector includes a main body housing, a motor built in the main body housing, a dust collecting fan that is rotationally driven by the motor, and a direct current power source that supplies electric power to the motor. And cooling the DC power supply.

  The second aspect of the present invention is also a dust collector. The dust collector includes a main body housing, a motor built in the main body housing, a dust collecting fan that is rotationally driven by the motor, a self-cooling fan that is rotationally driven by the motor and cools the motor itself, and the motor And a DC power source for supplying power to the DC power source, wherein the DC power source is cooled by intake air or exhaust air from the self-cooling fan.

  The third aspect of the present invention is also a dust collector. The dust collector includes a main body housing, a motor built in the main body housing, a dust collecting fan that is rotationally driven by the motor, and a plurality of battery packs that are detachably attached to the main body housing. The power supply is performed from the battery pack to the motor.

  In the third aspect, the battery pack may be cooled by exhaust air from the dust collecting fan.

  In the second aspect, the DC power supply may be cooled by exhaust air from the dust collecting fan and intake air or exhaust air from the self-cooling fan.

  In the first aspect, the DC power source is one or a plurality of battery packs that are detachably attached to the main body housing, and the exhaust air is exhausted from the battery pack mounting portion of the main body housing. It is good to be. In this case, the exhaust air may be exhausted in a plurality of directions.

  In the second aspect, the DC power source is one or a plurality of battery packs that are detachably attached to the main body housing, and the intake air or the exhaust air is drawn from the battery pack mounting portion of the main body housing. Or it is good in the structure which exhausts. In this case, the intake or exhaust air may be intake or exhausted in a plurality of directions.

  In the first or second aspect, when the battery pack is used, the exhaust air may be exhausted toward the connection terminal portion of the battery pack mounting portion. Alternatively, the exhaust air may be passed through a cooling air passage inside the battery pack.

  In the first to third aspects, the motor may be configured to selectively receive power from the DC power supply or AC power supply. In this case, it is preferable to provide a charging circuit that charges the DC power source with the power of the AC power source. Furthermore, it is good in the structure which can supply electric power simultaneously with respect to the said motor and the said charging circuit from the said alternating current power supply. Moreover, it is good to have the switch for selectively switching the electric power supply from the said AC power supply, and the electric power supply from the said DC power supply. When the switch is an automatic switch, the automatic switch is switched so that electric power based on the AC power supply can be supplied to the motor when the AC power supply is connected, and when the AC power supply is not connected. May be configured to switch power based on the DC power supply to the motor.

  In the first to third aspects, the motor may be an AC motor, and may have a configuration in which power from the DC power source is boosted and supplied to the AC motor. In this case, the boosting circuit that boosts the power from the DC power supply may be cooled by the exhaust air from the dust collecting fan. The booster circuit that boosts the power from the DC power supply may be cooled by the intake or exhaust air of a self-cooling fan that cools the motor itself.

  In the first to third aspects, the motor may be a DC motor, and may be configured to step down power supplied from the AC power source and supply the power to the DC motor. In this case, the DC motor may be a brushless motor. The step-down circuit that steps down the power from the AC power supply may be cooled by the exhaust air from the dust collection fan. Moreover, it is good in the structure which cools the pressure | voltage fall circuit which pressure | voltage-falls the electric power from the said AC power supply with the intake or exhaust air of the self-cooling fan which cools the said motor itself.

  It should be noted that any combination of the above-described constituent elements, and those obtained by converting the expression of the present invention between methods, systems, and the like are also effective as an aspect of the present invention.

  According to the present invention, it is possible to improve moving operability by driving a motor that rotationally drives the dust collecting fan with a DC power supply.

The right view which made the cross section the part which shows 1st Embodiment of the dust collector which concerns on this invention. Similarly, the principal part rear view which made a part a cross section. FIG. It is a circuit diagram of a 1st embodiment, (A) is in the state where electric power from an outlet is supplied to an AC motor, (B) is in the state where electric power from a battery pack is supplied to an AC motor. FIG. The flowchart which shows operation | movement of 1st Embodiment. The top view which shows the 2nd Embodiment of this invention. In 2nd Embodiment, the circuit diagram which shows the state by which two battery packs are connected in series, and the electric power from a battery pack is supplied to the alternating current motor. FIG. 9 is a circuit diagram showing a state in which two battery packs are connected in parallel and power from the battery pack is supplied to an AC motor in the second embodiment. The right view which made the cross section the part which shows 3rd Embodiment. The top view which shows 3rd Embodiment. The principal part rear view which made the cross section the part which shows 4th Embodiment. The right view which shows 5th Embodiment. It is a circuit diagram of a 6th embodiment, (A) is in the state where the electric power from the outlet is supplied to the DC motor, (B) is in the state where the electric power from the battery pack is supplied to the DC motor. FIG. The flowchart which shows operation | movement of 6th Embodiment. The flowchart which is 7th Embodiment and shows the operation | movement in the case of using a brushless motor. It is a circuit diagram of an 8th embodiment, (A) is in the state where electric power from an outlet is supplied to an AC motor via an automatic power supply changeover switch, (B) is a battery via an automatic power supply changeover switch. The circuit diagram which shows the state in which the electric power from a pack is supplied to the AC motor. The flowchart which shows operation | movement of 8th Embodiment. It is a circuit diagram of a 9th embodiment, (A) is in the state where electric power from an outlet is supplied to a DC motor via an automatic power supply changeover switch, (B) is a battery via an automatic power supply changeover switch. The circuit diagram which shows the state in which the electric power from a pack is supplied to the DC motor. It is 10th Embodiment, Comprising: The flowchart which shows the operation | movement which charges in parallel with motor drive. It is an example of the battery pack used in each embodiment of this invention, (A) is the perspective view seen from the insertion side (front side), (B) is the perspective view seen from the back side. It is an application example of the present invention, and is an explanatory view showing a configuration in which a dust collector and a cordless dust collection circular saw are interlocked.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or equivalent component, member, process, etc. which are shown by each drawing, and the overlapping description is abbreviate | omitted suitably. In addition, the embodiments do not limit the invention but are exemplifications, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention.

  A first embodiment of a dust collector according to the present invention will be described with reference to FIGS. In these drawings, the dust collector 1 has a main body housing (head cover) 2a, an electric motor 3 disposed and fixed inside, and a centrifugal dust collecting fan 4 that is rotationally driven by the motor 3 and sucks dust. A main body (head) 2 and a dust suction port (hose attachment port) 11 having a dust suction port (hose attachment port) 11 are provided on the side surface and open upward, and a bottomed dust case 10 in which the main body 2 is disposed in the opening. The main body 2 is disposed so that the upper opening of the bottomed dust case 10 is closed by the main body housing 2 a and is detachable from the dust case 10. The main body housing 2 a is an exhaust for discharging air sucked by the dust collecting fan 4. It has mouths 5a, 5b, 5c (see FIGS. 1 and 2). The dust case 10 has an internal space for storing dust.

  The motor 3 is disposed so that its output shaft is vertically downward with respect to the main body housing 2a, the centrifugal dust collecting fan 4 is directly connected to the motor output shaft, and the intake port 6 of the dust collecting fan 4 is connected to the main body housing. It is provided at the center of the lower surface of 2a. The air flow accompanying the rotation of the dust collecting fan 4 is indicated by a solid arrow P in FIG. 1, and a part of the exhaust air passes through an inverter 30 and a charging circuit 31 described later in FIG. 4 to cool them. Most of the exhaust air from the dust collecting fan 4 is exhausted from the exhaust ports 5a, 5b, 5c. An exhaust filter 9 is disposed inside the exhaust port 5b, 5c formation portion of the main body housing 2a.

  A self-cooling fan 7 is directly connected to the output shaft opposite to the dust-collecting fan mounting side of the motor 3, and the self-cooling fan 7 is connected to an intake port 8 (exhaust port 5a in FIG. 1) provided at another position of the main body housing 2a. Are formed at different cross-sectional positions), and air is sucked (intake) and exhausted from the exhaust ports 5b and 5c via the motor 3 itself. The air flow accompanying the rotation of the self-cooling fan 7 is indicated by a dotted arrow Q in FIG. In the case of FIG. 1, the intake air from the self-cooling fan 7 passes through the inverter 30 and the charging circuit 31 to cool them.

  A dust suction port 11 is formed in the dust case 10, and a filter device 12 is arranged inside the dust case 10 so as to partition the dust collecting fan 4 on the main body 2 side. A dust collection hose 35 is detachably connected to the suction port 11. The filter device 12 holds the cylindrical filter 13 sandwiched between a top cover 14 and a bottom cover 15, and an outer edge portion of the top cover 14 is connected to a seal packing 16 provided on the outer peripheral portion of the lower surface of the main body housing 2 a. The body case 2a and the dust case 10 are clamped and sealed by being sandwiched between the outer peripheral portions of the upper edge of the dust case 10 and fastened by a clamp or the like (not shown).

  Moreover, in order to carry the dust collector 1, the handle | steering-wheel 18 rotatably supported by the upper part of the main body housing 2a is provided.

  In the present embodiment, as shown in FIGS. 4A and 4B, the motor 3 is composed of an AC motor 3A, and a switch disposed on the operation panel unit 17 provided in the main body 2 of FIG. The motor 3A can be connected to a power cord 19 for connecting to a commercial AC power source (outlet) via the power source 21 and the manual power source switch (SW) 20. The power cord 19 is pulled out from the main body 2. The AC motor 3A can also be connected to a battery pack 40 serving as a DC power source via a switch 21 and a manual power source changeover switch 20 arranged on the operation panel unit 17 and an inverter 30 arranged at an appropriate position in the main body 2. . In this case, the inverter 30 functions as a booster circuit that converts the DC voltage of the battery pack 40 into an AC voltage and boosts the voltage to the operating voltage of the AC motor 3A. Further, the battery pack 40 is connected to the power cord 19 through a charging circuit 31 disposed at a proper position in the main body 2, and the battery pack 40 can be connected even when the AC motor 3 </ b> A is driven by the AC power supplied through the power cord 19. It can be charged with DC power of the required voltage value. The charging circuit 31 is provided with a protection circuit that prevents the battery pack 40 from being overcharged.

  Although not shown, the main body housing 2a has a drive power indicator lamp that can visually recognize which of the commercial AC power source and the DC power source (battery pack 40) supplies power to the AC motor 3A. Is provided. Further, a battery remaining amount lamp for displaying the remaining amount of the battery pack 40 mounted is also provided in the main body housing 2a.

  As shown in FIGS. 1 to 3, the battery pack 40 can be detachably attached to, for example, a battery pack mounting portion 2b that is a concave portion at the top of the main body housing 2a, and a connection terminal is connected to the battery pack mounting portion 2b. Part 25 is arranged. In the case of FIG. 1, the battery pack 40 is disposed on the battery pack mounting portion 2b so that the bottom surface thereof faces downward, and the connection terminal portion 25 on the main body 2 side is exposed on the bottom surface of the battery pack mounting portion 2b. It is fixed to.

  The battery pack 40 has, for example, the appearance shown in FIGS. 20A and 20B (however, the bottom is facing upward), and one or a plurality of secondary batteries (rechargeable batteries) are built in the battery case 41. is there. A plurality of slit grooves 42 are formed on the bottom surface of the battery case 41, and connection terminals 43 that can be electrically connected to the connection terminal portions 25 on the main body 2 side are disposed here. A first opening (air intake / exhaust port) 44 of the cooling air passage for cooling the internal battery is provided on the front surface of the battery case 41, and a second opening (air intake / exhaust port) is provided on the bottom surface. An outlet 45 is provided, and both are connected by a cooling air passage (intake / exhaust passage) that passes through the inside of the battery case 41. By operating the battery pack attachment buttons 46 on the left and right side surfaces of the battery case 41, the battery pack 40 can be detachably attached to the battery pack attachment portion 2b of the main body housing 2a.

  As shown in FIG. 2, the battery pack mounting portion 2b where the battery pack 40 is disposed has exhaust ports 5b and 5c formed of a large number of slit holes in different directions. That is, the exhaust port 5b opens to the surface of the battery pack mounting portion 2b that faces the front surface of the battery pack 40, and the exhaust port 5c opens to the surface that faces the left and right side surfaces of the battery pack 40. As shown by arrows P + Q in FIG. 1, the exhaust air from the exhaust port 5b enters the battery pack 40 through the first opening 44 on the front surface of the battery pack 40, and cools the inside of the battery pack through the internal cooling air passage. Then, the air is exhausted from the second opening 45. Further, the exhaust air from the exhaust port 5 c strikes both side surfaces of the battery pack 40 to cool the battery case 41.

  FIG. 5 is a manual operation flow according to the first embodiment and shows a case where priority is given to using an AC power supply. When using the dust collector 1, the user of the dust collector 1 first determines whether or not the power cord 19 of the dust collector 1 can be plugged into an AC power outlet (AC 100V is present) (S 1). If it is (S1: YES), the user inserts the power cord 19 into the outlet, and switches the power supply selector switch 20 to the side where the dust collector can be supplied with AC power as shown in FIG. 4A (S2). When the user operates the switch 21 to the energization side (S3), the AC motor (AC motor) 3A is driven, and the dust collecting fan 4 rotates.

  If the power cord 19 cannot be inserted into the outlet (S1: NO), it is next determined whether or not the battery pack 40 is attached to the battery pack attachment portion 2b (whether a rechargeable battery is present) (S4). If the battery pack 40 is attached, the user switches the power switch 20 to the side where the dust collector can be supplied with DC power as shown in FIG. 4B (S5). As a result, the DC power can be converted into AC power by the inverter 30 (S6). When the user energizes the switch 21 (S3), the AC motor 3A is driven and the dust collecting fan 4 rotates.

  As described above, the suction portion generated by the rotation of the dust collecting fan 4 causes the inner portion of the dust case 10 of the dust collector 1 to have a negative pressure. Thus, air and dust are sucked into the dust case 10 from the suction port 11 through the dust collecting hose 35 and separated into dust and air by the filter device 12. The dust is the cylindrical filter 13 of the filter device 12. The air is collected on the outer peripheral surface, passes through the filter 13, passes through the inner side of the filter device 12, and is sucked into the main body housing 2 a. The dust collected on the outer peripheral surface of the filter device 12 naturally falls and is stored in the dust case 10. The air sucked into the main body housing 2 a is exhausted through the exhaust filter 9 from the exhaust ports 5 b and 5 c provided in the battery pack mounting portion 2 b toward the battery pack 40 and the connection terminal portion 25. When the battery pack 40 is attached to the battery pack attachment portion 2b, the exhausted air passes through the first opening 44, the cooling air passage and the second opening 45 of the battery pack 40, and passes through the battery pack 40. Cool effectively. When the battery pack 40 is not attached to the battery pack attachment portion 2b and the AC power supply is driven, the exhaust air is blown to the connection terminal portion 25 and blows off dust and the like of the connection terminal portion 25.

  According to the present embodiment, the following effects can be achieved.

(1) Power can be selectively supplied from the battery pack 40 as a commercial AC power source or a DC power source, and power suitable for driving the motor 3 can be supplied to the motor, thereby improving the operability of movement.

(2) By making commercial AC power available, the exhaust air of the dust collecting fan 4 and the suction and exhaust air of the self-cooling fan 7 are generated regardless of the presence of the battery pack 40, and the battery pack 40 and the inverter are thereby generated. 30. The charging circuit 31 can be cooled to suppress heat generation. Further, it is possible to blow exhaust air to the battery pack mounting portion 2b.

(3) By providing the exhaust ports 5b and 5c in different directions of the battery pack mounting portion 2b, which is a portion where the battery pack 40 is detachably mounted, the exhaust air discharged from the exhaust ports 5b and 5c is supplied to the battery pack 40. It can be discharged from a plurality of directions, and a good cooling effect can be obtained. Further, by passing the exhaust air through the cooling air passage inside the battery pack 40, the inside of the battery pack 40 can be efficiently cooled.

(4) When the battery pack 40 is not attached to the battery pack mounting portion 2b, the exhaust air in a plurality of directions from the exhaust ports 5b and 5c is blown toward the connection terminal portion 25 and adheres to the connection terminal portion 25. You can eliminate dust and the like. As a result, it is possible to prevent a contact failure between the battery pack 40 and a short circuit failure due to dust and the like adhering to the connection terminal portion 25. Further, it is not necessary to provide a cover so that dust or the like does not adhere to the connection terminal portion 25, and the number of components is not increased.

(5) The battery pack 40 is connected to the power cord 19 through the charging circuit 31 in the main body 2, and the battery pack 40 has the required voltage value even when the AC motor 3 A is driven by the AC power supplied through the power cord 19. It can be charged with DC power.

(6) It is possible to use a compatible battery pack 40 that can be used for one or more other types of tools.

  A second embodiment of the present invention will be described with reference to FIGS. The second embodiment differs from the first embodiment in the number of battery packs 40. That is, two battery pack attachment portions 2b are provided in the main body housing 2a of the main body 2 of the dust collector 1, and the battery pack 40 can be detachably attached to each battery pack attachment portion 2b. The two battery pack mounting portions 2b are arranged so as to sandwich the motor 3 in the main body 2, and the size of the dust collector 1 in the left-right direction is made compact despite the arrangement of two battery packs.

  FIG. 7 is a circuit diagram showing a state in which two battery packs 40 are connected in series and power from the battery pack 40 is supplied to the AC motor 3A via the inverter 30 in the second embodiment. FIG. 6 is a circuit diagram showing a state in which two battery packs 40 are connected in parallel and power from the battery pack 40 is supplied to the AC motor 3A via the inverter 30 in the second embodiment.

  Other configurations are the same as those of the first embodiment, and the battery pack 40 as an AC power source or a DC power source can be selectively used according to the manual operation flow of FIG.

  According to the second embodiment, since a plurality of battery packs 40 serving as DC power sources can be connected, the motor 3A can be driven with a larger electric power than when driven by one battery pack 40. Alternatively, the motor 3A can be driven for a long time.

  A third embodiment of the present invention will be described with reference to FIGS. The third embodiment is different from the first embodiment in the number of battery packs 40 and the mounting posture. That is, the main body housing 2a of the main body 2 of the dust collector 1 is provided with the battery pack mounting portion 2b, but the battery pack 40 is mounted in the longitudinal direction of the battery pack 40 (the bottom surface of the battery pack 40 is up and down). Facing the direction). The battery pack 40 detachably attached to the battery pack mounting portion 2b is arranged in parallel to the side of the motor 3 in the main body 2, and the two battery packs are placed vertically, so that the main body 2 of the dust collector 1 is laterally moved. The dimensions are made compact. The circuit shown in FIG. 7 can be used when two battery packs 40 are connected in series, and the circuit shown in FIG. 8 can be used when connected in parallel. In FIG. 9, the air flow accompanying the rotation of the dust collection fan 4 is indicated by a solid arrow P, and the air flow accompanying the rotation of the self-cooling fan 7 is indicated by a dotted arrow Q.

  Other configurations are the same as those of the first embodiment, and the battery pack 40 as an AC power source or a DC power source can be selectively used according to the manual operation flow of FIG.

  A fourth embodiment of the present invention will be described with reference to FIG. The fourth embodiment is different from the first embodiment in the number of battery packs 40 and the mounting posture. That is, two battery pack mounting portions 2b are provided in the main body housing 2a of the main body 2 of the dust collector 1, but the mounting orientation of the battery pack 40 is in a sideways state with the longitudinal direction facing the front-rear direction (battery pack). 40 is opposed to the left and right side surfaces of the main body housing 2a). The battery pack 40 detachably attached to each battery pack mounting portion 2b is arranged so as to sandwich the motor in the main body 2, and the size of the dust collector 1 in the left-right direction is made compact. Further, by mounting the bottom surface of the battery pack 40 so as to oppose the left and right side surfaces of the main body housing 2a, the exhaust air from the exhaust ports 5c on the left and right side surfaces of the main body housing 2a is provided in the bottom surface of the battery pack 40 (FIG. 20). The inside of the battery pack 40 can be cooled by exhausting toward the second opening 45) of (A) and (B) and passing the exhaust air through the cooling air passage inside the battery pack 40. The circuit shown in FIG. 7 can be used when two battery packs 40 are connected in series, and the circuit shown in FIG. 8 can be used when connected in parallel.

  Other configurations are the same as those of the first embodiment, and the battery pack 40 as an AC power source or a DC power source can be selectively used according to the manual operation flow of FIG.

  A fifth embodiment of the present invention will be described with reference to FIG. The fifth embodiment differs from the first embodiment in the mounting posture of the battery pack 40. That is, although the battery pack mounting portion 2b is provided in the main body housing 2a of the main body 2 of the dust collector 1, the bottom face of the battery pack 40 is mounted upward. And the connection terminal part 25 is being fixed downward on the lower side of the ceiling surface of the battery pack attaching part 2b. For this reason, the arrangement is such that dust or the like hardly adheres to the connection terminal portion 25.

  Other configurations are the same as those of the first embodiment, and the battery pack 40 as an AC power source or a DC power source can be selectively used according to the manual operation flow of FIG.

  A sixth embodiment of the present invention will be described with reference to FIGS. 13 (A), (B) and FIG. The sixth embodiment is different from the first embodiment in that a DC motor 3B is used instead of the AC motor 3A and an AC / DC converter 32 is used instead of the inverter 30. The rest is the same as in the first embodiment. The AC / DC converter 32 has a function as a step-down circuit that steps down the commercial AC power supply AC100V to a DC voltage suitable for the operation of the DC motor 3B.

  The DC motor 3B can be connected to the battery pack 40 via a switch 21 and a manual power supply switch (SW) 20 disposed on the operation panel unit 17 of FIG. The DC motor 3B can also be connected to the power cord 19 via the switch 21 disposed on the operation panel unit 17, the manual power switch 20 and the AC / DC converter 32 disposed at an appropriate position in the main body. Further, the battery pack 40 is connected to the power cord 19 via a charging circuit 31 arranged at a proper position in the main body, and the battery pack 40 can be charged even when the DC motor 3B is driven by the power supplied through the power cord 19. It is.

  The AC / DC converter 32 is structured to be cooled by the exhaust air from the dust collecting fan 4 and the suction and exhaust air from the self-cooling fan 7 in the same manner as the inverter 30 in the first embodiment.

  FIG. 14 is a manual operation flow according to the sixth embodiment and shows a case where priority is given to using a DC power supply. When the dust collector 1 of FIG. 1 is used, the user of the dust collector 1 first determines whether or not the battery pack 40 is attached to the battery pack attachment portion 2b (whether a rechargeable battery is present) (S11). If so (S11: YES), the user switches the power switch 20 to the side where the dust collector can be supplied with DC power as shown in FIG. 13B (S12). Then, when the user operates the switch 21 (S13), the DC motor (DC motor) 3B is driven, and the dust collecting fan 4 rotates.

  If the battery pack 40 is not attached to the battery pack attachment portion 2b (S11: NO), it is next determined whether or not the power cord 19 can be plugged into an outlet (AC100V is present) (S14). If the plug can be inserted (S14: YES), the user inserts the power cord 19 into the outlet, and sets the power switch 20 on the side where the dust collector 1 can receive the AC power supply as shown in FIG. Switch (S15). As a result, AC power can be switched to DC power by the AC / DC converter 32 (S16). When the user operates the switch 21 (S13), the DC motor 3B is driven and the dust collecting fan 4 rotates. To do.

  A seventh embodiment of the present invention will be described with reference to FIG. The seventh embodiment differs from the first embodiment in that an AC brushless motor is used as the motor 3 in FIG. 4 and a motor control inverter is further added. The rest is the same as in the first embodiment.

  When using the dust collector 1, the dust collector user first determines whether or not the power cord 19 of the dust collector 1 can be plugged into an outlet (AC100V is present) (S 21). YES), the user inserts the power cord 19 into the outlet, and switches the power switch (SW) 20 to the side where the dust collector can be supplied with AC power (S22). Then, the brushless motor can be controlled by the motor control inverter (S23). When the user operates the switch 21 (S24), the alternating current (AC) brushless motor is driven and the dust collecting fan 4 rotates.

  If the power cord 19 cannot be inserted into the outlet (S21: NO), it is next determined whether or not the battery pack 40 is attached to the battery pack attachment portion 2b (whether there is a rechargeable battery) (S25). If the battery pack 40 is attached (S25: YES), a user will switch the power supply switch 20 to the side which can receive supply of DC power from a dust collector (S26). As a result, the DC power can be switched to AC power by the inverter 30 (S27), the brushless motor can be controlled by the motor control inverter (S23), and the user operates the switch 21. (S24), the AC brushless motor is driven, and the dust collecting fan 4 is rotated.

  According to the seventh embodiment, the main part of the dust collector can be reduced in size by adopting the brushless motor.

  An eighth embodiment of the present invention will be described with reference to FIGS. 16 (A), 16 (B) and FIG. The eighth embodiment differs from the first embodiment in that an automatic power supply switch (SW) 22 is used instead of the manual switch 20. The rest is the same as in the first embodiment.

  The automatic power changeover switch 22 includes a switch unit 22A and a switch unit operation unit 22B. A switch unit 22A is provided in place of the manual switch 20 of the first embodiment, and the switch unit operation unit 22B includes a power cord 19. The switch unit 22A is electrically connected. Whether or not the power cord 19 is connected to the outlet (AC100V is present) can be automatically determined by the switch unit operation unit 22B, and the switch unit 22A can be automatically switched according to the determination result. .

  In the operation flow of FIG. 17, when using the dust collector 1, the dust collector user first determines whether or not the power cord 19 of the dust collector 1 can be plugged into an outlet (AC100V is present) (S 31). If possible (S31: YES), the user plugs the power cord 19 into an outlet, and the switch unit operation unit 22B in the automatic power supply switch (SW) 22 indicates that the dust collector 1 is connected to the AC power source as shown in FIG. The switch unit 22A is automatically switched to the side that can receive the supply (S32). Then, when the user operates the switch 21 (S33), the AC motor (AC motor) 3A is driven, and the dust collecting fan 4 rotates.

  If the power cord 19 cannot be plugged into the outlet (S31: NO), it is next determined whether or not the battery pack 40 is attached to the battery pack attachment portion 2b (rechargeable battery is present) (S34). If the battery pack 40 is attached (S34: YES), the switch unit operation unit 22B in the automatic power supply selector switch (SW) 22 can receive the DC power from the dust collector as shown in FIG. The switch unit 22A is automatically switched to the side (S35). Thus, the DC power can be switched to AC power by the inverter 30 (S36), and when the user operates the switch 21 (S33), the AC motor 3A is driven and the dust collecting fan 4 rotates.

  According to the eighth embodiment of the present invention, since it has the automatic power supply changeover switch 22 composed of the switch unit 22A and the switch unit operation unit 22B, the dust collector user can use the manual switch 20 in the first embodiment or the like. It is not necessary to perform switching, and the operability of the dust collector can be improved.

  The automatic power supply switch (SW) 22 is switched so that power based on the AC power supply can be supplied to the motor 3A when the power cord 19 is connected to the AC power supply, and when the AC power supply is not connected. Since the electric power based on the battery pack 40 as the DC power supply is switched to be supplied to the motor 3A, the AC power supply can be preferentially used when both the DC power supply and the AC power supply can be used.

  A ninth embodiment of the present invention will be described with reference to FIGS. The ninth embodiment is different from the sixth embodiment (FIG. 13) in that an automatic power supply switch (SW) 22 is used instead of the manual switch 20. The rest is the same as in the sixth embodiment.

  As in the eighth embodiment, the automatic power switch 22 includes a switch unit 22A and a switch unit operation unit 22B. A switch unit 22A is provided instead of the manual switch 20 in the sixth embodiment. The part operation part 22B is electrically connected to the power cord 19 and the switch part 22A. The switch part 22A can be automatically switched by the switch part operation part 22B, and an AC power source is selected as shown in FIG. 18A or a battery pack as a DC power source as shown in FIG. The DC motor 3B can be driven by selecting 40.

  A tenth embodiment of the present invention will be described with reference to FIG. The operation flow of FIG. 19 is the same as that of the first embodiment in that the battery pack 40 is controlled to be charged while the AC motor 3A is driven by the supply of power from a commercial AC power supply. The operation flow is different. The rest is the same as in the first embodiment.

  When using the dust collector 1, the user of the dust collector 1 first determines whether or not the battery pack 40 is attached to the battery pack attachment portion 2b (whether a rechargeable battery is present) (S41). If it is attached (S41: YES), it is determined whether or not there is a remaining battery pack 40 (S42). If there is a remaining battery pack 40 (S42: YES), the user then switches the power switch (SW) 20 to the side where the dust collector can receive the DC power supply (S43). As a result, the DC power can be switched to AC power and can be boosted by the inverter 30 (S44). When the user operates the switch 21 (S49), the AC motor (AC motor) 3A is driven and the dust collecting fan. 4 rotates.

  If the battery pack 40 is not attached (S41: NO), it is next determined whether or not the power cord 19 of the dust collector 1 can be plugged into the outlet (AC100V) (S47). (S47: YES), the user inserts the power cord 19 into the outlet, and switches the power supply switch (SW) 20 to the side where the dust collector can be supplied with AC power (S48). Then, when the user operates the switch 21 (S49), the AC motor 3A is driven and the dust collecting fan 4 is rotated.

  Next, when there is no remaining battery pack 40 (S42: NO), it is next determined whether or not the power cord 19 of the dust collector 1 can be plugged into an outlet (AC100V) (S45). If insertion is possible (S45: YES), the user charges the battery pack 40 (rechargeable battery charging) by inserting the power cord 19 into the outlet (S46). Next, the power switch 20 is switched to the side where the dust collector can receive the AC power supply (S48). Then, when the user operates the switch 21 (S49), the AC motor 3A is driven and the dust collecting fan 4 is rotated.

  According to the tenth embodiment, since it is possible to simultaneously supply power to the motor 3A and the charging circuit 31, the motor 3A is driven using a commercial AC power source to collect dust, and the battery pack 40 is simultaneously installed. Can be charged.

  FIG. 21 is an application example of the present invention, and shows a case where the dust collector 1 of the present invention and a dust collection circular saw 50 as a tool with a dust collection function are interlocked. The dust collector 1 and the dust collecting circular saw 50 are connected by a dust collecting hose 35, and the dust collecting circular saw 50 is arranged on the mating member 60 and represents a state immediately before starting work. Thereafter, when the dust collector 1 and the circular saw 50 are started and the work is started, the circular saw 50 proceeds to the right in FIG. 21 while cutting the mating material, and at this time, the chips at the time of cutting are scattered around. Without being collected by the dust collector 1 through the dust collecting hose 35.

  According to this application example, the following effects can be obtained.

(1) Both the dust collector 1 and the dust collecting circular saw 50 can be operated cordlessly and can be operated anywhere.

(2) Even if the dust collecting circular saw 50 runs out of batteries, the work can be resumed immediately by replacing it with the battery pack 40 of the dust collector 1.

(3) The battery pack 40 that has run out of battery can be charged by the dust collector 1 (when the commercial AC power supply is driven), and the workability is further improved.

  The present invention has been described above by taking the embodiment as an example. However, it is understood by those skilled in the art that various modifications can be made to each component and each processing process of the embodiment within the scope of the claims. By the way. Hereinafter, modifications will be described.

  In each of the above embodiments, the battery pack 40 serving as a DC power supply is cooled by the exhaust of the dust collection fan 4 and the self-cooling fan 7, but the battery pack 40 serving as a DC power supply is cooled by the intake air of the self-cooling fan 7 ( For example, the configuration may be such that intake air is passed through the cooling air passage inside the battery pack. In this case, the battery pack may be cooled by intake air in a plurality of directions.

  As a battery pack as a direct current power source, there are a slide type that is slid and mounted on the main body, and a plug type that is inserted and mounted on the main body, but in each of the above embodiments, any structure Even a battery pack can be used. Moreover, it is good also as a structure which has a protection circuit so that a battery pack may not be in an overdischarged state. In addition, by changing the arrangement of the battery pack, the external dimensions of the main body of the dust collector can be freely changed, and the battery pack mounting direction (posture) can be freely changed. Furthermore, when using a plurality (two or more) of battery packs, the suction force of the dust collector or the usable time can be freely set by electrically connecting the battery packs in series or in parallel.

  In addition, the material, shape, quantity, arrangement, and the like of each constituent member can be appropriately changed as long as the object of the present invention can be achieved.

DESCRIPTION OF SYMBOLS 1 Dust collector 2 Main body 2a Main body housing 2b Battery pack attachment part 3 Motor 4 Dust collection fan 5a. 5b, 5c Exhaust port 6 Intake port 7 Self cooling fan 10 Dust case 11 Suction port 12 Filter device 17 Operation panel unit 19 Power cord 20 Manual power supply switch 21 Switch 22 Automatic power supply switch 22A Switch unit 22B Switch unit operation unit 25 Connection Terminal section 30 Inverter 31 Charging circuit 32 AC / DC converter 35 Dust collection hose 40 Battery pack 43 Connection terminals 44, 45 Opening

Claims (23)

A body housing;
A motor built in the main body housing;
A dust collecting fan that is rotationally driven by the motor;
A DC power supply for supplying power to the motor,
The dust collector, wherein the DC power supply is cooled by exhaust air from the dust collecting fan. A body housing;
A motor built in the main body housing;
A dust collecting fan that is rotationally driven by the motor;
A self-cooling fan that is rotationally driven by the motor and cools the motor itself;
A DC power supply for supplying power to the motor,
A dust collector, wherein the DC power supply is cooled by intake air or exhaust air from the self-cooling fan. A body housing;
A motor built in the main body housing;
A dust collecting fan that is rotationally driven by the motor;
A plurality of battery packs detachably attached to the main body housing;
A dust collector, wherein power is supplied from the battery pack to the motor.   The dust collector according to claim 3, wherein the battery pack is cooled by exhaust air from the dust collecting fan.   The dust collector according to claim 2, wherein the DC power supply is cooled by exhaust air from the dust collection fan and intake air or exhaust air from the self-cooling fan.   2. The DC power supply is one or a plurality of battery packs that are detachably attached to the main body housing, and the exhaust air is exhausted from a battery pack mounting portion of the main body housing. The dust collector described in 1.   The DC power source is one or a plurality of battery packs that are detachably attached to the main body housing, and the intake or exhaust air is sucked or exhausted from a battery pack mounting portion of the main body housing. The dust collector according to claim 2 or 5.   The dust collector according to claim 6, wherein the exhaust air is exhausted in a plurality of directions.   The dust collector according to claim 7, wherein the intake or exhaust air is sucked or exhausted in a plurality of directions.   The dust collector according to any one of claims 6 to 9, wherein the exhaust air is exhausted toward a connection terminal portion of the battery pack attachment portion.   The dust collector according to any one of claims 6 to 9, wherein the exhaust air is passed through a cooling air passage inside the battery pack.   The dust collector according to claim 1, wherein the motor is selectively supplied with power from the DC power supply or the AC power supply.   The dust collector according to claim 12, further comprising a charging circuit that charges the DC power supply with electric power of the AC power supply.   The dust collector according to claim 13, wherein power can be simultaneously supplied from the AC power source to the motor and the charging circuit.   The dust collector according to any one of claims 12 to 14, further comprising a switch for selectively switching power supply from the AC power supply and power supply from the DC power supply.   When the switch is an automatic switch, the automatic switch is switched so that electric power based on the AC power supply can be supplied to the motor when the AC power supply is connected, and when the AC power supply is not connected. The dust collector according to claim 15, wherein electric power based on the DC power supply is switched so as to be supplied to the motor.   The dust collector according to any one of claims 1 to 16, wherein the motor is an AC motor, and boosts electric power from the DC power source and supplies the boosted power to the AC motor.   The dust collector according to any one of claims 12 to 16, wherein the motor is a DC motor, and the electric power from the AC power supply is stepped down and supplied to the DC motor.   The dust collector according to claim 18, wherein the DC motor is a brushless motor.   The dust collector according to claim 17, wherein a booster circuit that boosts power from the DC power supply is cooled by exhaust air from the dust collection fan.   18. The dust collector according to claim 17, wherein a booster circuit that boosts power from the DC power supply is cooled by intake air or exhaust air of a self-cooling fan that cools the motor itself.   The dust collector according to claim 18, wherein the step-down circuit that steps down the power from the AC power source is cooled by exhaust air from the dust collection fan.   19. The dust collector according to claim 18, wherein the step-down circuit that steps down the power from the AC power source is cooled by intake air or exhaust air of a self-cooling fan that cools the motor itself.

Images