JP2012250291A - Adapter for dust collection attachment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve usability in using a dust collection attachment independently by being detached from a power tool.SOLUTION: This adapter 60 for a dust collection attachment includes: a power source mounting part 65 formed in a hammer drill and having a form identical to that of a first mounting part for mounting a battery pack 22 thereon; an attachment mounting part 69 formed in the hammer drill and having a form identical to that of a second mounting part for mounting a dust collection attachment 40 internally arranged with a motor 42 and a dust collection fan 44; and an electric circuit for driving the motor 42 of the dust collection attachment 40 mounted to the attachment mounting part 69 by using the battery pack 22 mounted to the power source mounting part 65 as a power source.

Description

  The present invention relates to a dust collection attachment adapter for using a dust collection attachment attached to a power tool such as a hammer drill alone.

The dust collection attachment is attached to an electric tool such as a hammer drill and is used to collect dust generated by a drilling operation or the like. As such a dust collection attachment, in Patent Document 1, the first mounting portion having the same shape as the mounting portion of the battery pack on the electric power tool is formed on the upper surface, and the same shape as the mounting portion of the battery pack in the electric power tool on the lower surface. A motor and a fan are accommodated in the main body provided with the second mounting portion, a suction cylinder and an exhaust cylinder are projected from the main body, a suction nozzle is connected to the suction cylinder, and a dust bag is connected to the exhaust cylinder. Things are known.
This dust collection attachment is used with a power tool attached to the first attachment part and a battery pack attached to the second attachment part. When the dust collection attachment motor is driven, the fan rotates and sucks dust from the suction nozzle. Can be collected in a dust bag.

JP 2001-300787 A

  Since the conventional dust collection attachment has a switch in the main body, it can be used alone even if it is detached from the electric tool with the battery pack attached. However, since the battery pack is directly mounted on the lower surface, it is bulky up and down and may hit the floor or the like during use. Further, in a state where it is detached from the electric tool, the upper surface of the dust collection attachment provided with the first mounting portion is gripped, so that it is difficult to handle alone and there is a possibility of dropping it, which is not convenient.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an adapter for a dust collection attachment that is easy to support and operate when the dust collection attachment is detached from an electric tool and used alone and can be used with good ease.

In order to achieve the above object, the invention according to claim 1 is a power supply mounting portion formed in the electric tool and having the same form as the first mounting portion on which the battery pack is mounted; The attachment mounting part of the same form as the second mounting part to which the dust collection attachment with a fan installed is mounted, and the motor of the dust collection attachment mounted to the attachment mounting part using the battery pack mounted to the power supply mounting part as a power source And an electric circuit to be driven.
According to a second aspect of the present invention, in the configuration of the first aspect, a switch for opening and closing an electric circuit is provided.
According to a third aspect of the present invention, in the configuration of the first or second aspect, a handle is provided between the battery pack and the dust collecting attachment in a plan view.
According to a fourth aspect of the present invention, in any one of the first to third aspects, an accessory storage portion is provided.

According to the first aspect of the present invention, the battery pack and the dust collection attachment can be combined without being bulky up and down by adopting the adapter for dust collection attachment. Therefore, when the dust collection attachment is detached from the electric tool and used alone, it becomes easy to support and operate, and good usability can be obtained.
According to the second aspect of the present invention, in addition to the effect of the first aspect, the operation of the dust collecting attachment can be arbitrarily turned on and off by the switch, so that the usability is improved and the capacity of the battery pack is also saved. Become.
According to invention of Claim 3, in addition to the effect of Claim 1 or 2, the balance at the time of single use of a dust collection attachment becomes good, and a usability | use_condition becomes favorable.
According to invention of Claim 4, in addition to the effect in any one of Claims 1 thru | or 3, small articles, such as a nozzle, can be stored by the accommodating part, and it becomes more convenient.

It is explanatory drawing of the hammer drill equipped with the battery pack and the dust collection attachment. It is explanatory drawing of the adapter for dust collection attachments which attached the battery pack and the dust collection attachment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, FIG. 1 shows an example in which a dust collection attachment is attached to a hammer drill which is an electric tool. The hammer drill 1 accommodates a motor 3 at the lower part of the front side of the housing 2 in which a pair of left and right halved housings are assembled (the right side in FIG. 1 is the front), with the output shaft 4 facing upward. A first gear 7, a clutch 8, and a boss sleeve 9 are provided from the front on an intermediate shaft 6 that transmits torque via a bevel gear 5 at the top. Above the intermediate shaft 6, a cylindrical tool holder 10 is supported in parallel with the intermediate shaft 6, and the rear end of the piston cylinder 11 loosely inserted behind the cylindrical tool holder 10 is connected to the boss sleeve 9 via a swash bearing. The arm 12 which was armored is connected. A striker 14 is accommodated inside the piston cylinder 11 through an air chamber 13 so as to be movable back and forth, and an impact bolt 15 provided in front of the striker 14 can be hit. The first gear 7 meshes with the second gear 16 attached to the tool holder 10. At the front end of the tool holder 10, a chuck 17 to which a tip tool 18 such as a drill bit can be attached and detached is provided.

  On the other hand, a handle 19 having a switch 20 and a switch lever 21 is formed on the upper rear side of the housing 2, and a first mounting portion for mounting a battery pack 22 serving as a power source is provided below the handle 19. 23 is formed. The first mounting portion 23 is disposed between a pair of left and right guide rails 24 that hold the pair of left and right slide rails 25 provided on the upper surface of the battery pack 22 from the left and right, and the battery pack 22 side. When the battery pack 22 is slid forward from the rear with the slide rail 25 positioned between the guide rails 24, the rails 24, 25 are arranged in a known structure. It is combined at a position where the terminals come into contact with the fitting. Reference numeral 27 denotes a retaining hook that is urged to a projecting position from the upper surface at the rear portion of the battery pack 22 and engages with the recess 28 provided in the first mounting portion 23 at the coupling position of the battery pack 22.

  In addition, the front lower portion of the housing 2 becomes a protruding portion 29 that protrudes forward of the battery pack 22 as an inclined surface portion whose front surface is inclined downward, and a first portion for attaching the dust collection attachment 40 to the lower surface of the protruding portion 29. Two mounting portions 30 are formed. Similar to the first mounting portion 23 of the battery pack 22, the second mounting portion 30 includes a pair of left and right guide rails 31 and a terminal 32 disposed between the guide rails 31. A controller (not shown) that is electrically connected to the coil of the motor 3, the switch 20, and the terminals 26 and 32 is accommodated inside the protrusion 29.

  The dust collection attachment 40 has a casing 41 having a reverse L-shape in side view that fits into the protruding portion 29 of the hammer drill 1, and a motor 42 with the output shaft 43 facing forward is placed laterally at the bottom of the casing 41. A controller (not shown) is provided behind the housing. A dust collecting fan 44 is fixed to the output shaft 43 and is defined in the casing 41 and accommodated in an intake chamber 45 having an exhaust port (not shown) on the side surface. 46 is a dust box coupling portion formed in the casing 41 in front of the intake chamber 45, and an inlet 48 is protruded forward on the upper side of the coupling portion 46, and an outlet 49 is opened on the upper surface of the coupling portion 46. A guide passage 47 is formed. In addition, a communication hole 50 is formed on the rear surface of the coupling portion 46 to allow the coupling portion 46 to communicate with the intake chamber 45 on the same axis as the dust collection fan 44.

A dust box 51 is detachably attached to the coupling portion 46. The dust box 51 forms an air passage including a filter unit (not shown) inside, and the suction port 52 on the upstream side of the filter unit in the air passage is connected to the outlet 49 of the guide passage 47 when attached to the coupling portion 46. The exhaust port 53 that faces the downstream side of the filter unit in the ventilation path faces the communication hole 50.
Further, the rear end of the flexible hose 54 is connected to the inlet 48 of the guide passage 47. The front end of the flexible hose 54 is connected to a cylindrical suction portion 55 through which the tip tool 18 penetrates, so that dust generated from around the tip tool 18 can be sucked from the suction portion 55. The suction part 55 is supported by the tip of a rod 56 that is slidable parallel to the axial direction of the tool holder 10 above the housing 2 of the hammer drill 1 and is urged forward and urged so as to abut on the work surface. It has become.

  On the other hand, on the upper surface of the rear portion of the casing 41, a pair of left and right slide rails 57 fitted between the guide rails 31 provided on the second mounting portion 30 of the protruding portion 29, and terminals (not shown) located between the slide rails 57 are provided. Is provided. That is, when the casing 41 is slid rearward with respect to the protruding portion 29 with the slide rail 57 positioned between the guide rails 31 with the same structure as the structure of mounting the battery pack 22 to the first mounting portion 23. The rails 31 and 57 are coupled together at a position where the terminals come into contact with each other.

  FIG. 2 shows an example in which the battery pack 22 and the dust collection attachment 40 are attached to a dust collection attachment adapter (hereinafter simply referred to as “adapter”) 60. The adapter 60 has an upward rising portion 62 extending from the front end of an adapter body 61 formed in the front-rear direction, and a handle 63 protruding rearward from the upper end of the rising portion 62. The shape from the connecting portion of the adapter main body 61 and the rising portion 62 to the rising portion 62 is an inverted U-shape, and the front surface is inclined like the protruding portion 29 of the hammer drill 1 so as to be inclined forward. The corner portion 64 has a protruding V shape.

As with the first mounting portion 23 of the hammer drill 1, a power supply mounting portion 65 having a guide rail 66, a terminal 67, and a recess 68 is formed at the lower rear portion of the adapter body 61, and the battery pack 22 is slid from the rear. It is possible. On the other hand, an attachment mounting portion 69 including a guide rail 70 and a terminal 71 is formed on the lower surface of the corner portion 64 as in the second mounting portion 30 of the hammer drill 1.
Further, an accessory storage portion 72 is formed on the side surface of the adapter main body 61. Here, as an accessory, a replacement nozzle 73 that can be connected to the front end of the flexible hose 54 of the dust collection attachment 40 is held by a plurality of holding pieces constituting the storage portion 72.

Further, in the adapter main body 61, a terminal 67 connected to the battery pack 22 mounted on the power supply mounting portion 65 and a terminal 71 connected to the dust collection attachment 40 mounted on the attachment mounting portion 69 are connected in series. An electric circuit that connects and supplies power from the battery pack 22 to the dust collection attachment 40 is formed. A switch 74 for opening and closing the electric circuit is provided on the side surface of the handle 63.
The left and right width of the adapter main body 61 is substantially the same as that of the battery pack 22 and the dust collection attachment 40, and the start-up portion 62 has a tapered shape that gradually decreases in the left and right width as it goes upward. The handle 63 is formed with a thickness that can be grasped by a hand over the entire length including the switch 74.

  When the hammer drill 1 and the battery pack 22, the dust collection attachment 40, and the adapter 60 configured as described above are used with the battery pack 22 and the dust collection attachment 40 mounted on the hammer drill 1 as shown in FIG. The battery pack 22 is slid onto the first attachment part 23 and the dust collection attachment 40 is slid onto the second attachment part 30 to connect the front end of the flexible hose 54 to the suction part 55.

  When the switch lever 21 of the hammer drill 1 is pushed in to turn on the switch 20, the motor 3 is driven to rotate the intermediate shaft 6. At this time, the clutch 8 is slid from the outside of the housing 2 to engage with the first gear 7 only, the retracted position with only the boss sleeve 9, and the first gear 7 and the boss sleeve 9 simultaneously. By selecting one of the intermediate positions to be matched, the piston cylinder 11 is reciprocated by the drill mode in which the tool holder 10 is rotated through the second gear 16 and the tip tool 18 is rotated, and the arm 12 is swung. It is possible to select a hammer mode in which the tip tool 18 is struck through the impact bolt 15 by the interlocking striker 14 and a hammer drill mode in which the rotation of the tool holder 10 and the impact bolt 15 are struck simultaneously.

On the other hand, when the switch 20 is turned on, the controller of the hammer drill 1 supplies power to the controller of the dust collection attachment 40. Therefore, also in the dust collection attachment 40, the motor 42 drives and the dust collection fan 44 rotates. As a result, outside air is sucked from the suction portion 55, is discharged into the dust box 51 through the flexible hose 54 and the guide passage 47, reaches the intake chamber 45 through the communication hole 50, and from the exhaust port provided in the intake chamber 45. It is discharged outside. Accordingly, dust generated from the workpiece by the rotating tip tool 18 enters the dust box 51 from the suction portion 55 through the flexible hose 54 and the guide passage 47, and is captured and stored in the filter unit. .
The battery pack 22 and the dust collection attachment 40 are removed by sliding the battery pack 22 and the dust collection attachment 40 in the direction opposite to that when the battery pack 22 and the dust collection attachment 40 are attached.

  Next, when only the dust collection attachment 40 is used, as shown in FIG. 2, the battery pack 22 removed from the hammer drill 1 is slid and attached to the power supply attachment portion 65 of the adapter 60, while the attachment attachment portion 69. Then, the dust collection attachment 40 removed from the hammer drill 1 is slid and attached, and a nozzle 75 or the like is inserted and connected to the tip of the flexible hose 54. Then, the dust collection attachment 40 and the battery pack 22 are coupled to the adapter 60 side by side, and by holding the handle 63, the dust collection attachment 40 can be supported in an arbitrary direction and posture. At this time, since the handle 63 is positioned between the battery pack 22 and the dust collection attachment 40 positioned in front and rear in a plan view, the handle 63 is well balanced and the dust collection attachment 40 is held. There is no burden on the operation.

  When the switch 74 of the handle 63 is turned ON, the motor 42 is driven using the battery pack 22 as a power source and the dust collecting fan 44 rotates. Therefore, the dust is collected in the dust box 51 by applying the nozzle 75 to the location where dust collection is desired. be able to. Therefore, for example, after drilling with the hammer drill 1 equipped with the dust collection attachment 40, the dust collection attachment 40 and the battery pack 22 removed from the hammer drill 1 are replaced with the adapter 60, and this time only the dust collection attachment 40 is replaced. It can be easily operated to suck dust remaining inside the hole.

  As described above, according to the adapter 60 of the above-described form, the power supply mounting part 65 formed in the hammer drill 1 and having the same form as the first mounting part 23 to which the battery pack 22 is mounted and the hammer drill 1 formed in the motor 42 and the attachment mounting portion 69 having the same form as the second mounting portion 30 to which the dust collecting attachment 40 having the dust collecting fan 44 is mounted, and the attachment mounting portion using the battery pack 22 mounted to the power source mounting portion 65 as a power source. Since the electric circuit for driving the motor 42 of the dust collection attachment 40 attached to 69 is provided, the battery pack 22 and the dust collection attachment 40 can be coupled without being bulky up and down. Therefore, when the dust collection attachment 40 is detached from the hammer drill 1 and used alone, it becomes easy to support and operate, and good usability can be obtained.

In particular, here, the adapter 60 is provided with a switch 74 for opening and closing the electric circuit, so that the operation of the dust collection attachment 40 can be arbitrarily turned on / off, and the usability is improved and the charge amount of the battery pack 22 is improved. It also saves money.
Further, by providing the handle 63 positioned between the battery pack 22 and the dust collection attachment 40 in a plan view, the balance when using the dust collection attachment 40 alone is improved, and the usability is improved.
By providing the accessory storage portion 72, small items such as replacement nozzles and tools can be stored, which is more convenient.

In the above embodiment, the power supply mounting part is arranged at the rear part of the adapter and the attachment mounting part is arranged at the front part of the adapter, but the structure of the dust collection attachment (the attachment / detachment structure of the dust box, the connection position of the flexible hose, etc.) Depending on the case, both mounting parts may be arranged on the left and right respectively. Further, the battery pack may be slid sideways on the side surface or rear surface of the adapter main body.
Furthermore, the handle is not limited to a form protruding rearward, but may have other shapes such as a loop shape in which the rear end is connected to the rear end of the adapter main body, or a protruding sideways. The storage portion can be changed as appropriate, such as a concave portion into which an accessory is fitted instead of the holding piece, or a concave portion provided with a lid. However, depending on the shape of the adapter main body, the handle may be omitted or the storage portion may be eliminated.

On the other hand, the electric circuit of the adapter may be added with a known delay circuit using a capacitor, a transistor or the like so that the motor stops after a predetermined time delay when the switch is turned OFF. If such a delay circuit is provided, dust remaining on the flexible hose and the like can be reliably collected in the dust box. Of course, this delay circuit can also be provided on the dust collecting attachment side. Moreover, it is possible to operate the dust collection attachment at the same time as attaching to the adapter without providing the adapter with a switch.
Furthermore, the power supply mounting part provided in the adapter is not limited to the above form, and may be changed to another form such as a plug-in type in accordance with the form of the first mounting part of the electric tool. Similarly, you may change the form of an attachment mounting part into another form according to the form of the 2nd mounting part of an electric tool. Therefore, it is not necessary to have the same form as the power supply mounting portion, and the location where the casing is coupled and the location where the casing is electrically connected may be different.

  In addition, the power tool is not limited to a hammer drill, and any DC tool that can be fitted with a dust collection attachment, such as an electric drill, hammer, impact drill, etc., can be used with the adapter of the present invention. Can be used by replacing However, two battery packs may be prepared for the power tool and the adapter, and only the dust collection attachment may be used.

  1 .. Hammer drill, 2 .. Housing, 3, 42 .. Motor 10, 10. Tool holder, 18 .. Tip tool, 22 .. Battery pack, 23 .. First mounting portion, 24, 31, 66, 70 .. Guide rail, 25, 57 .. Slide rail, 26, 32, 67, 71 .. Terminal, 29 .. Projection part, 30 .. Second mounting part, 40 .. Dust collection attachment, 41. , 44 ··· Dust collecting fan, 51 · · Dust box, 54 · · Flexible hose, 60 · · Adapter for dust collection attachment, 61 · · Adapter body, 62 · · Raising part, 63 · · Handle, 64 · · · , 65 .. Power supply mounting part, 69 .. Attachment mounting part, 72 .. Storage part, 73, 75 .. Nozzle, 74.

Claims (4)

  A power supply mounting portion having the same form as the first mounting portion formed on the electric tool and mounted with the battery pack, and a second mounting portion formed on the electric tool and mounted with a dust collection attachment having a motor and a fan installed therein And an electric circuit that drives the motor of the dust collection attachment attached to the attachment attachment portion using the battery pack attached to the power supply attachment portion as a power source. An adapter for dust collection attachment.   The dust collection attachment adapter according to claim 1, further comprising a switch for opening and closing the electric circuit.   The dust-collecting attachment adapter according to claim 1 or 2, further comprising a handle positioned between the battery pack and the dust-collecting attachment in a plan view.   The adapter for a dust collection attachment according to any one of claims 1 to 3, further comprising an accessory storage portion.

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