JP4203366B2 - Electric tool with dust cover - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric tool with a dustproof cover such as a drill or a drill used for drilling concrete or the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in an electric tool used for drilling concrete or the like, a dustproof cover is provided to collect dust from the concrete.
[0003]
This dust-proof cover has a bellows-like cylindrical body and a mounting body connected to the base of the cylindrical body, and this mounting body is detachably mounted to the electric power tool main body, The cylindrical body covers the drill all the time while the cylindrical body contracts with the progress of the drilling operation, and the chips generated by the drilling operation are prevented from scattering to the outside (Patent Document 1, Patent Document 2). Patent Document 3).
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 6-85711
[Patent Document 2]
JP 2000-317709 A
[0006]
[Patent Document 3]
JP 2001-54837 A
[0007]
[Problems to be solved by the invention]
However, the power tool with the dustproof cover configured as described above has a problem in that the tip of the drill or drill cannot be confirmed from the outside of the dustproof cover, and it is difficult to position the tip of the drill or drill during the drilling operation. . That is, since it is difficult to confirm the position of the tip of a drill, a drill or the like, there is a problem that it is difficult to position relative to a wall such as concrete.
[0008]
In addition, in the drilling operation in which the electric tool is used upward, there is a problem in that positioning is difficult because a drill or drill slips away from the ceiling surface of concrete or the like at the beginning of opening the hole.
[0009]
Accordingly, in view of the above problems, the present invention provides an electric tool with a dustproof cover that facilitates positioning of a drilling member such as a drill or a drill.
[0010]
[Means for Solving the Problems]
The invention according to claim 1, drill motor protrudes from the tool body, which is built by a drilling member, such as tung is rotated by the motor, which drilling holes to an object such as concrete, bellows and in tubular, a rear portion of the dust-proof cover for covering said piercing member, said attached to the tool body, focusing on the inside of the dust cover by a suction means cutting chips generated from the object by piercing of the piercing member In the dust-proof power tool with a dustproof cover, the front portion of the dustproof cover opens, a positioning member is spanned over the opening, and the opening excluding the positioning member is a dust collection opening for the chips. the positioning member is made of an elastic member in a conical, it opens a positioning hole into which the piercing member penetrates the central part of the conical, the dust cover from the internal In the axial perpendicular direction towards the serial piercing member is a dust cover with the power tool, wherein a metal piercing member support plate protrudes.
[0011]
The invention according to claim 2 is the electric tool with a dustproof cover according to claim 1, wherein the dust collection holes for the chips are opened on both sides of the positioning hole in the positioning member.
[001 2 ]
[Action]
In the electric tool with a dust-proof cover according to claim 1, a drilling member such as a drill or a drill protrudes from a positioning hole in the center of the positioning member at the front of the dust-proof cover, and an operator moves the front end of the drilling member. Since the part can be confirmed, positioning becomes easy.
[001 3 ]
Further, since the dust collection opening is opened around the positioning member, the chips can be reliably collected inside the dustproof cover.
[00 14 ]
In addition , since the positioning member is an elastic member , even if the positioning member hits the object during the drilling operation, the operation is not hindered.
[00 15 ]
Further , since the positioning member has a conical shape and the hole-piercing member protrudes from the central portion, the positioning can be confirmed more easily.
[00 16 ]
Further , since the perforating member is supported by the pair of metal perforating member support plates, the perforating member does not shift with respect to the positioning hole.
[00 17 ]
Further , all the chips inside the dustproof cover can be sucked by the suction means.
[00 18 ]
In the electric tool with a dustproof cover according to the second aspect, since dust collecting holes are opened on both sides of the positioning hole in the positioning member, it is possible to collect dust reliably.
[00 19 ]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an electric tool 10 with a dustproof cover for drilling according to an embodiment of the present invention will be described.
[002 0 ]
(1) Configuration of Electric Tool 10 The tool body 12 of the electric tool 10 is a pistol type, and a grip 14 projects from the rear part of the tool body 12. A motor as a drive source is built in the tool body 12 and can be operated by a lever 16 provided on the grip 14.
[002 1 ]
A side handle 18 projects from the front part of the tool body 12. Further, a chuck 22 is provided at the front end portion of the tool main body 12 for fixing the drill 20 as a perforating member.
[00 22 ]
The drill 20 is covered with a transparent dustproof cover 24 made of a synthetic resin having a bellows shape and a cylindrical shape.
[00 23 ]
The length of the dustproof cover 24 in the axial direction is slightly shorter than the length of the drill 20 in the axial direction, and the front end of the drill 20 protrudes even when the bellows-shaped dustproof cover 24 is extended. .
[00 24 ]
The mounting portion 25 at the rear portion of the dust cover 24 is screwed to the front end portion of the tool body 12. As a result, the rear part of the dust cover 24 is closed.
[00 25 ]
A front portion of the dust cover 24 is opened, and a positioning member 26 is stretched over the opening.
[00 26 ]
The positioning member 26 is made of rubber, and includes a circular positioning plate 28 in the center portion and a pair of mounting portions 30 and 30 protruding from the outer peripheral portion of the positioning plate 28 to both sides. The pair of attachment portions 30, 30 are fixed to the front edge of the dust cover 24. The dust cover 24 made of synthetic resin and the rubber positioning member 26 are fixed by integral molding.
[00 27 ]
The positioning plate 28 has a conical shape, and has a shape protruding toward the front, and a positioning hole 32 through which the drill 20 passes is opened at the center. A pair of arc-shaped dust collecting holes 34 are opened on both sides of the positioning hole 32.
[00 28 ]
A portion of the front opening of the dust cover 24 that is not covered with the positioning member 26 is a dust collection opening 36.
[00 29 ]
A suction cylinder portion 38 protrudes in the vicinity of the rear portion of the dustproof cover 24, and the suction cylinder portion 38 communicates with the inside of the dustproof cover 38. A suction device such as a blower (not shown) is connected to the suction cylinder portion 38 via a hose 40. When this blower is operated, chips inside the dust cover 24 can be sucked from the suction cylinder portion 38.
[003 0 ]
On the inner peripheral side of the dustproof cover 24 and at the upper part and the lower part in the vicinity of the front part of the dustproof cover 24, perforated member support plates 42 and 42 respectively project. The pair of perforating member support plates 42, 42 are made of metal, and the front end portions thereof are cut out in a triangular shape, and the front end portions of the pair of triangular perforated member support plates 42, 42 as shown in FIG. Then, the upper and lower portions of the rotating drill 20 are supported.
[003 1 ]
(2) State of Use of Electric Tool 10 As shown in FIG. 2 for explaining the state of use of the electric tool 10 having the above-described configuration, from the positioning hole 32 in the front portion of the transparent dustproof cover 24, as shown in FIG. With the front end portion of the drill 20 protruding, the electric tool 10 is placed in a horizontal state and close to the concrete 50 that is the object to be drilled. In this case, since the front end portion of the drill 20 protrudes from the conical positioning member 26, the front end portion of the drill 20 can be easily positioned with respect to the concrete 50.
[00 32 ]
As shown in FIG. 3, when the drilling operation is started by operating the lever 16, the bellows-like dust-proof cover 24 is shrunk by the amount that the drill 20 has entered the concrete 50, and the dust-collecting cover 24 has a dust collecting cover. Chips that are fragments of the concrete 50 enter through the holes 34 and the dust collection openings 36. The entered chips are discharged from the suction cylinder portion 38 to the outside.
[00 33 ]
Further, since the positioning member 26 is made of rubber during the drilling operation, the positioning member 26 is deformed in accordance with the wall surface of the concrete 50 and does not hinder the drilling operation. During this operation, the drill 20 is supported by the pair of perforating member support plates 42 and 42 so that the upper and lower portions thereof are supported, so that the drill 20 can be reliably positioned on the axis without shaking. Work can be done.
[00 34 ]
2 and 3, the horizontal operation has been described. However, even when a hole is made in concrete on the ceiling surface, positioning can be performed reliably even if the drill 20 is in the vertical direction.
[00 35 ]
(Example of change)
Needless to say, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
[00 36 ]
(1) Modification 1
In the above embodiment, the drill 20 has been described as the drilling member, but other drilling members such as a drill may be used instead.
[00 37 ]
(2) Modification example 2
In the above embodiment, the chips inside the dustproof cover 24 are sucked from the suction cylinder portion 38. However, when the generated chips are small, it is not necessary to provide this suction means.
[00 38 ]
(3) Modification 3
In the above embodiment, rubber is used as the positioning member 26, but another elastic member may be used instead.
[00 39 ]
(4) Modification 4
In the above embodiment, the pair of perforating member support plates 42, 42 are provided. However, in order to ensure the support of the perforating member, four perforating member support plates 42, 42, 42 are provided every 45 °. 42, that is, two pairs of perforating member support plates may be provided.
[004 0 ]
(5) Modification 5
In the above embodiment, the tip of the pair of perforated member support plates 42 is cut out in a triangular shape, but instead of this, it may be a straight shape without being cut out or a semicircular shape, In addition, any shape that can be supported may be used.
004 1 ]
【The invention's effect】
As described above, with the electric tool with a dustproof cover according to the present invention, it is possible to reliably position a drilling member such as a drill or a drill with respect to an object and to collect dust reliably. Therefore, it is suitable for drilling concrete or the like whether the electric tool is horizontal or upward.
[Brief description of the drawings]
FIG. 1 is a perspective view of an electric tool with a dustproof cover showing an embodiment of the present invention.
FIG. 2 is an explanatory view of a state where a hole is being opened using the same electric tool with a dustproof cover.
FIG. 3 is an explanatory view showing a state in which a hole is similarly opened using an electric tool with a dustproof cover.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Electric tool 12 Tool main body 20 Drill 24 Dust-proof cover 26 Positioning member 28 Positioning plate 30 Mounting part 32 Positioning hole 34 Dust collection hole 36 Dust collection opening part 38 Suction cylinder part 42 Hole member support plate

Claims (2)

A drilling member such as a drill or a drill projecting from a tool body with a built-in motor is rotated by the motor, and a hole is made in an object such as concrete.
Bellows shape and tubular, a rear portion of the dust-proof cover for covering said piercing member is attached to the tool body,
In the electric tool with a dustproof cover for collecting dust generated from the object by the punching of the punching member into the dustproof cover by suction means ,
The front portion of the dust cover is opened, a positioning member is spanned over the opening, and the opening excluding the positioning member is a dust collection opening of the chip,
The positioning member is made of an elastic member having a conical shape, and a positioning hole through which the perforating member passes is formed in a central portion of the conical shape.
An electric tool with a dustproof cover , wherein the dustproof cover has a metal punching member support plate protruding in a direction perpendicular to the axis from the inside toward the punching member . The power tool with a dustproof cover according to claim 1, wherein dust collection holes for the chips are opened on both sides of the positioning hole in the positioning member.

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