JP2002224631A - Dust catcher and power tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust catcher excellent in userfriendliness irrespective of a power supply situation, and a power tool excellent in userfriendliness and suitably used with the dust catcher. SOLUTION: A dust catcher 1 is loaded with batteries 3 and 3 as a power source, and houses a direct current motor which rotationally drives a blower by using the batteries 3 and 3 as a power source. A dust intake 7 communicating with a dust collecting chamber inside a housing 2 is projectingly formed at one side of the housing 2. A receptacle which connects a power cord 19 for a hammer drill 10 to supply the power source of the batteries 3 and 3 is provided in the vicinity of the dust intake 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collector used for collecting dust and the like, and a power tool used in combination with the dust collector.

[0002]

2. Description of the Related Art The above dust collector has a blower driven by a motor inside a housing having a dust collecting chamber, and the housing is provided with a dust suction port to which a dust suction hose is connected. on the other hand,
For example, a power tool such as a hammer drill is connected to a dust suction hose via an attachment or the like attached to the tip of a bit. Therefore, when the electric tool and the dust collector are operated together, the blower rotates and sucks dust and the like generated during work from the dust suction hose together with air. The air sucked into the housing passes through the dust collection chamber and is discharged to the outside through the exhaust hole of the housing. However, dust and the like are trapped by the filter provided at the boundary between the dust collection chamber and the blower, and thus are collected as it is. It will be stored in the dust chamber.

[0003]

In the conventional dust collector, an AC power source is used as a power source. Therefore, if the place of use is a place having a bad power supply condition, such as a high place or a mountainous part, the dust collector cannot be used. In addition, it is necessary to route a long extension cord, and the usability deteriorates. In addition, since the power tool uses a battery mounted in a housing as a power source in a DC tool having a DC motor, the power tool becomes heavy and leads to a reduction in workability. In addition, by using a power source separate from the dust collector, the capacity of the battery may be short and the usability may be impaired.

[0004] Therefore, an object of the present invention is to provide a dust collector which is excellent in usability irrespective of a power supply situation. An object of the present invention is to provide a power tool which can be suitably used together and is also excellent in usability.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, in a housing having a dust collecting chamber, a battery and a power supply of the battery are driven to rotate a blower. While a DC motor is provided inside, a dust suction port to which a dust suction hose can be connected and an outlet for outputting an external power supply are provided in the housing to provide a dust collector capable of supplying the power of the battery to the outside. In order to achieve the above object, the invention according to claim 2 has a built-in DC motor, a power cord that can be plugged into and connected to an outlet of the dust collector according to claim 1, and an external power supply obtained from the outlet. This is an electric tool driven by a DC motor. According to a third aspect of the present invention, in addition to the object of the second aspect, in order to further improve operability and workability when used together with a dust collector, a power cord is integrated with a dust suction hose.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a dust collector 1 and a hammer drill 10 as an electric tool. FIG. 2 is an electric circuit diagram of the dust collector. First, the dust collector 1 forms a dust collection chamber inside a vertically long housing 2, and the dust collection chamber is formed. At the bottom of the 2
On the other hand, a DC motor 4 for rotating a blower (not shown) using the batteries 3 and 3 as a power source is housed above the dust collection chamber.
A carrying handle 5 is formed on the upper part of the housing 2, and belts 6, 6 for carrying on the back can be attached to the upper part and the left and right sides. Further, the housing 2
A dust suction port 7 communicating with the dust collection chamber is protruded from one side, and an outlet 8 for outputting an external power supply having a lid 9 is provided above the dust suction port 7.

On the other hand, the hammer drill 10 can apply any one of rotation only, hit only, and rotation + stroke to the bit 13 mounted on the tip of the housing 11 by driving a DC motor 12 built in the housing 11. When the switch lever 14 provided on the housing 11 is pushed in and operated, the switch 15 inside the housing 11 is pressed.
Is turned on. The housing 11 has a bit 1
An attachment 16 extending toward the front end of the dust collector 3 is attached, and dust suction hoses 17 and 18 are connected between the attachment 16 and the dust suction port 7 of the dust collector 1. A power cord 19 is inserted into the inside of the dust suction hoses 17, 18.
The other plug 22 can be pulled out to the outside of the dust collecting hose 1 of the dust suction hose 18 and inserted into the outlet 8 to the connector 21 provided in the connector 1.

In the dust collector 1, the DC motor 4
Is provided with a changeover switch 23 and a control circuit 24. The changeover switch 23 is manually turned on by an operation from outside the housing 2 to directly supply the power of the batteries 3 and 3 to the DC motor 4 without passing through the control circuit 24.
Position, an interlocking ON position for supplying the power of the batteries 3 and 3 to the DC motor 4 via the control circuit 24,
It can be switched to an OFF position that is not connected to a position. Further, when the control circuit 24 is electrically connected to the hammer drill 10 by the power cord 19, the DC motor 12 and the switch 15
And a shunt 25 form a drive circuit for the DC motor 12;
When the switch 15 of the hammer drill 10 is turned on while the changeover switch 23 is switched to the interlocking ON position,
The control circuit 24 supplies the power of the batteries 3 and 3 to the DC motor 12 of the hammer drill 10 and also supplies the power of the batteries 3 and 3 to the DC motor 4 of the dust collector 1 so that both are driven. ing.

In the dust collector 1 configured as described above, when the changeover switch 23 is switched to the manual ON position, the DC motor 4 is independently driven by the power supplied from the batteries 3 to rotate the blower. External air is taken in from the dust suction port 7 and exhausted to the outside of the housing 2 through the dust collection chamber. As is well known, the dust collecting chamber is provided with a filter at the boundary with the blower, so that dust and the like sucked in together with the air are blocked by the filter and stored in the dust collecting chamber.
The accumulated dust and the like can be discarded by opening a cover (not shown) provided on the side surface of the housing 2. On the other hand, when the changeover switch 23 is switched to the OFF position, the power supply to the DC motor 4 is shut off, and the operation of the dust collector 1 stops. When the changeover switch 23 is switched to the interlocking ON position, the dust collector 1 does not operate unless the switch 15 of the hammer drill 10 electrically connected to the outlet 8 is turned on. That is, as described above, the switch 15 is
Only when the hammer drill 10 is operated at N, the control circuit 24 supplies the power of the batteries 3 and 3 to the DC motor 4 to interlock the dust collector 1. The control circuit 2
4 is provided with a delay circuit.
The operation of the dust collector 1 is continued for several seconds even after the operation of the dust collection device is stopped, and the dust and the like remaining in the dust suction hoses 17 and 18 are sucked into the dust collection chamber.

As described above, according to the dust collector 1 of the above embodiment,
In the housing 2, a battery 3, 3 and a DC motor 4 for driving the battery 3, 3 as a power source are provided internally, and the battery 3 is provided by using an external power output outlet 8 provided in the housing 2. , 3 can also be supplied to the hammer drill 10, as shown in FIG.
The dust collector 1 can be used without any problem even when the place of use is a place where power supply conditions are poor, such as a high place or a mountainous part. In particular, since no power cord or extension cord is connected to the dust collector 1, it is convenient to move during work and the usability is improved.

On the other hand, according to the above-mentioned hammer drill 10, the power supply cord 19 which can be inserted and connected to the outlet 8 of the dust collector 1 is provided, and the built-in DC motor 12 is driven by the power of the batteries 3 and 3 obtained from the outlet 8. With this configuration, the same battery power supply can be used, the use time with the dust collector 1 becomes substantially equal, and it is not necessary to separately mount a battery as a dedicated type for connection to the dust collector 1, so that the weight can be reduced. Thus, the usability of the hammer drill 10 is improved. In particular, here, the dust collector 1
Suction hoses 17, 1 connecting the hammer drill 10 to the
Since the power cord 19 is inserted into the power cord 8 and integrated with each other, the power cord 19 does not need to be separately routed and does not become twisted and hindered. And workability can be further improved.

In the above-described embodiment, the hammer drill 10 is described as a type dedicated to connection to the dust collector 1, but even if it is a normal battery detachable type, as shown in FIG. Instead of the battery being used, it is electrically connected to the switch 15 when mounted on the housing, and the connector 20 of the power cord 19.
By using the battery adapter 26 having a connector that can be connected to the same type, the battery adapter 26 can be used as well as the dedicated connection type, and the same operation and effect can be obtained. In addition, DC-
If a DC converter circuit is provided, DC with different rated voltage
The tool can be used. Furthermore, if the dust collector 1 is provided with an inverter circuit and an alternating current is output from the outlet 8, a normal AC tool can be used similarly. Of course, the power tool is not limited to a hammer drill, and a marunouchi, a grinder, a cutter, and the like can also be used.

Further, the charging of the battery of the dust collector is performed by connecting the battery to the charger by a cable, and the battery itself is detachable from the housing of the dust collector, and is removed from the dust collector and directly set on the charger to charge the battery. It may be possible. In addition, in the above-described embodiment, the use state in which the dust collector is carried is described. In the case of carrying on the back, even if the weight of the dust collector increases due to the mounting of the battery, an effect is obtained that the burden on the worker is small and the work can be performed without any trouble. On the other hand, the integration of the dust-absorbing hose and the power cord is not limited to the one that allows the inside of the dust-absorbing hose to be inserted, but can also be realized by providing a hook or other locking means along the outer surface of the dust-absorbing hose. Also, the form of the power cord
The present invention is not limited to the above-mentioned separate shape having a connector and a plug at both ends, and may be changed as appropriate, such as a power cord integrally connected to a housing of a power tool as a dedicated type for connection to a dust collector.

[0014]

According to the first aspect of the present invention, a battery and a DC motor are provided inside a housing having a dust collection chamber, and the dust suction port and an outlet are provided in the housing. Can be supplied to the outside, so that the dust collector can be used without any problem even when the place of use is a place where power supply conditions are poor, such as a high place or a mountainous part.
In particular, since a power cord and an extension cord are not connected to the dust collector, it is convenient to move during work and the usability is improved. According to a second aspect of the present invention, there is provided a power cord which can be inserted and connected to an outlet of the dust collector according to the first aspect,
By using an electric tool that drives the built-in DC motor with an external power supply obtained from an outlet, the same battery power supply can be used, the usage time with the dust collector is almost the same, and there is no need to install a separate battery, which is lightweight. Therefore, usability is improved. According to the third aspect of the invention, in addition to the effect of the second aspect, the power cord is integrated with the dust suction hose, so that the operability and workability when used together with the dust collector can be further improved. it can.

[Brief description of the drawings]

FIG. 1 is a perspective view of a dust collector and a hammer drill.

FIG. 2 is an electric circuit diagram of a dust collector and a hammer drill.

FIG. 3 is an explanatory view showing a use state of a dust collector and a hammer drill.

FIG. 4 is a modified example of the electric circuit diagram.

[Explanation of symbols]

1. dust collector, 2. housing, 3. battery,
4, 12, DC motor, 7, Dust inlet, 8, 21
Outlet, 10 hammer drill, 17, 18
Dust suction hose, 19 ··· power cord, 20, 21 · · connector, 22 · · plug, 23 · · · switch, 24 ·
・ Control circuit.

Claims (3)

[Claims] 1. A dust suction port in which a battery and a DC motor driven by a power source of the battery and rotating a blower are installed in a housing having a dust collection chamber, and a dust suction hose can be connected to the housing. And an outlet for outputting an external power supply, so that the power of the battery can be supplied to the outside. 2. A DC motor having a built-in DC motor.
An electric tool comprising a power cord pluggable into an outlet of the dust collector described in 1 above, and the DC motor is driven by an external power supply obtained from the outlet. 3. The power tool according to claim 2, wherein a power cord is integrated with the dust suction hose.