JPH10225811A - Drilling tool with chip receiving cover body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drilling tool capable of preventing chip residue from a flying and being scattered during a drilling operation when a through hole is drilled on a material to be drilled such as a wall material or a ceiling material, preventing the chip residue housed therein from spilling and falling even when the drilling tool is separated from the material to be drilled or it is inclined after the through hole is drilled, and assuredly throwing away the chip residue. SOLUTION: A drilling tool 20 for drilling a through hole on a material to be drilled comprises a cover body 7 whose end face abuts on the peripheral edge of the through hole, drilling blades 4 housed in the cover body 7 and protruding while rotating forward from the end face of the cover body 7 to drill the material to be drilled and an openable discharge port formed on the side surface of the cover body 7 for taking out chips collected therein. Further, a discharge body 7e is detachably attached to the discharge port as required.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piercing tool for piercing a through-hole in a body to be pierced, and more particularly to a piercing tool which has a simple structure and is suitable for piercing a through-hole in a body to be pierced. The present invention relates to a piercing tool provided with a chip receiving cover, which can surely prevent the generated chips from scattering and falling off, and can easily remove the chips.

[0002]

2. Description of the Related Art Hitherto, a wide variety of piercing tools provided with a cover for preventing scattering of chips generated when a through-hole is formed in a pierced body have been developed and widely marketed.

[0003] On the other hand, as a piercing tool provided with a cover body for receiving swarf produced when a through-hole is pierced in a body to be pierced, such as a ceiling material or a wall material, for example, a piercing device described in Japanese Utility Model Publication No. 61-28553. A tool is disclosed.

[0004]

[Problems to be Solved by the Invention]
In a conventional piercing tool provided with a cover body for receiving chippings, typified by a piercing tool described in -28653,
When drilling through holes in a horizontal body to be pierced such as ceiling material, or for example, against the wall material to make the front of the wiring box arranged behind the wall of the standing wall face the wall surface When drilling a through-hole, the drilling operation can be performed without scattering chips during the drilling operation. However, after drilling the through-hole, when the drilling tool is separated from the body to be drilled, or the hole is drilled. When the tool is tilted, there is a problem that the chips stored inside the cover body spill from the cover body.

The present invention has been devised in view of such a situation, and a problem to be solved is to solve the above-mentioned problems and problems of a conventional drill. And the purpose is that the structure is simple,
No piercing tool provided with a swarf receiving cover body, which can surely prevent the swarf and spilling of the swarf generated when piercing the through-hole into the pierced body, and can easily remove the swarf. It is assumed that.

[0006]

Means for Solving the Problems The gist of the invention of claim 1 adopted as means for solving the above-mentioned problem is that the numbering used in the drawings will be described. A chip receiving cover body having an end surface that abuts on the periphery of the through hole to be bored. The chip receiving cover body is accommodated inside the cover body, and is protruded while rotating forward from the end surface of the cover body. A piercing tool having a piercing blade for piercing a hole in the pierced body, wherein the swarf receiving cover body removes swarf collected inside the swarf receiving cover body. A punch provided with a chip receiving cover body, characterized in that the discharge port is formed to be freely openable and closable.

According to the piercing tool having the chip receiving cover body according to the first aspect of the present invention, a through-hole is formed in a pierced body such as a wall material or a ceiling material. The cutting holes generated during the cutting operation can be perforated while collecting the chips inside the chip receiving cover body (while preventing the chips from falling off). Also, the chips collected inside the cover body are
It can be easily taken out through the outlet and easily disposed of. That is, when drilling a through hole in a body to be drilled, chips can be prevented from scattering around the work site, and the work site is not stained.

[0008] Next, the gist of the invention according to claim 2 is to provide a piercing tool provided with the chip receiving cover, wherein the through hole is formed in the chip receiving cover. 2. A chip receiving cover according to claim 1, wherein a discharge body capable of collecting and removing the chips generated in the discharge port is detachably mounted so as to cover the discharge port. Perforator ".

According to the piercing tool provided with the chip receiving cover according to claim 2 employing such means, claim 1 is provided.
In addition to the effect obtained by the piercing device according to the above, in particular, it can be removed while collecting chips in the discharger,
The effect is obtained that the chips can be reliably removed and disposed of.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a piercing device according to the present invention will be described in detail with reference to an embodiment shown in the drawings.

FIG. 1 is a partially cutaway front view showing a piercing tool 10 provided with a chip receiving cover body of a first embodiment, and FIG. 2 is a partially cutaway side view of the same.

As shown in the figure, this piercing tool 20 has a rotating shaft 1 which is detachably attached at its tip to a rotating driving tool, and a rotating shaft 1 which is driven to rotate by the rotating driving tool, and one end of which is detachably fixed to the rotating shaft 1. A center shaft 2 for providing a position of a center of a perforated hole to be drilled in a wall material, and a center through hole formed concentrically with the center of the perforated center of the through hole, wherein the rotating shaft 1 is formed in the center through hole. The rotating body 5 has a perforated blade 4 which is removably inserted in the lower part of the body and which is fixed via the blade body brackets 3 attached to opposing sides separated from the center through hole by a predetermined distance. A main body block 6, a cup-shaped leg 7b covering the entire rotating body 5 having a chip discharge port 7a formed in a side wall surface, and the rotary shaft 1 formed integrally with the leg 7b is inserted therethrough. A cylindrical portion 7d provided with an insertion hole 7c
A cover body 7 comprising: a scrap catcher 7i capable of collecting and storing chippings; and a discharge body 7e that can be detachably mounted so as to cover the entire discharge opening 7a.
And a cut depth adjusting device 12 fixed to the upper surface of the cover body 7 to limit the moving distance of the main body block 6.

The rotary shaft 1 integrally includes a holding portion 1a detachably attachable to a rotary driving tool, and a housing 1b extending from the holding portion 1a and having a cylindrical space having an open end. Center shaft 2 described later on the lower shaft center 1
A mounting portion 1c is formed so as to be removably insertable into the mounting portion 2a. In addition, a coil spring (elastic body) is provided in the housing 1b so that the center shaft 2 is constantly urged toward the projecting direction by a resilient force and can be immersed in the housing 1b against the resilient force. ) 1d
Is decorated. One end of the spring 1d is elastically supported by the inner bottom surface of the housing 1b, and the other end is elastically supported by an attached portion 2a formed on the center shaft 2.

The center shaft 2 has an attached portion 2a formed at one end in a shape corresponding to the attached portion 1c formed on the housing 1b, and the attached portion 2a is attached to the attached portion 2a. An attachment portion 1c formed on the rotating shaft 2 is detachably attached to the rotating shaft 2, and can be stopped by the stopper ring (detachment means) 2b so as to idle with respect to the rotating shaft 1. The other end of the shaft 2 is integrally formed with a point 2c, and the point 2c can enter the surface of the body to be drilled.

The center shaft 2 has an attached portion 2a formed at one end in a shape corresponding to the attached portion 1c formed on the housing 1b. The attached portion 2a is formed on the attached portion 2a. An attachment portion 1c formed on the rotating shaft 2 is detachably attached to the rotating shaft 2, and can be stopped by the stopper ring (detachment means) 2b so as to idle with respect to the rotating shaft 1. The other end of the shaft 2 is integrally formed with a point 2c, and the point 2c can enter the surface of the body to be drilled.

The rotating body 5 is provided with nut-shaped fixing portions formed on opposite sides of the rotating body 5 at predetermined intervals from the center through-hole. Can be bolted.

That is, although the center shaft 2 is attached to the rotating shaft 1 and is free to rotate, and is urged in the projecting direction by the restoring force of the coil spring 1d provided inside the rotating shaft 1, When the entire piercing tool 20 of the present invention is pressed toward the body to be pierced, the tip 2c enters the surface of the body to be pierced, and the center shaft 2 is rotated against the 1d spring force of the spring with the center shaft 2 as it is. The tip 2c is made to enter the surface of the body to be drilled so that the center of the center of the hole to be bored in the body to be drilled is not shifted. Function as a shift prevention.

The blade bracket 6 is integrally formed in a substantially rectangular parallelepiped shape, a female screw is threaded on an outer side wall, and a bolt head of a bolt 11 screwed to the female screw and the blade bracket 6 are formed. The perforation blade 4 is sandwiched between the side walls of the piercing blade. A long through-hole is formed in the center of the blade bracket 6, and the tip of a bolt provided through this through-hole is screwed to a fixing portion formed in the nut shape, thereby securing It is adapted to be fixed on both sides of the rotating body. However, the shape and quantity of the blade bracket to be attached to the rotating body are not limited, and it is sufficient that each perforation blade is fixed so as to draw the same circular locus about the center of the center axis. It goes without saying that the design can be changed as appropriate.

It is preferable that the cutting edge of the drilling blade is formed in a V-shape, since the sharpness when drilling the wall material is good.

Next, the cover 7 will be described. FIG. 3 is an overall perspective view showing the appearance of the cover 7, FIG. 4 is a side view of a partly broken main part, and FIG. 5 is a bottom view. In the figure, a cover 7 has a cylindrical part 7b provided with a cup-shaped leg 7b covering the whole of the rotating body 5 and an insertion hole 7c formed integrally with the upper part of the leg 7b and through which the rotary shaft 1 is inserted. 7d, a scrap catcher 7h capable of collecting and storing swarf,
And a discharge body 7e which is detachably locked so as to cover the whole through a locking portion 7g formed on the peripheral edge of the discharge port 7a. An outlet 7a is formed.

The cup-shaped leg 7b is brought into contact with an end face 7f of the leg in contact with a peripheral edge of a through-hole formed in a body to be pierced, such as a wall material or a ceiling material, and the cover body 7 is left as it is. The discharge body may be any as long as it functions so as to prevent the swarf generated when drilling the through-hole by rotating the drilling blade 4 from the rear end toward the front from the end face to prevent scattering of chips. 7e functions so as to prevent the swarf generated when the through hole is formed, and easily removes the swarf collected and stored in the scrap catcher 7h through the discharge port 7e. Any function that can be eliminated can be used.

The scrap catcher 7h
When the tapered drop surface is formed at the opening end of the scrap catcher, the chips generated when the through-hole is formed in the body to be pierced can be collected without collecting around the opening end of the scrap catcher 7h. It is particularly preferable because it can be reliably moved toward 7h and dropped into the scrap catcher 7h.

Further, if the discharging member 7e is formed in a shape like a dust receiving portion of a dust collector, all the chips can be collected on the inner surface of the discharging member, thereby preventing the chips from falling off. This ejector 7e can be removed,
In addition, this discharge body 7e is prevented while preventing chips from falling off.
Can be removed, and the chips can be reliably disposed of.

The cutting depth adjusting device 12 employs a “cutting depth adjusting device in a rotary cutting tool” described in Japanese Utility Model Publication No. 59-43045 filed by the applicant of the present invention. An axially helical slope is formed. A lower slider is rotatably fitted to a cylindrical portion of a main body provided with legs at the lower part of the lower cylindrical cylinder, and a sliding element is provided on the upper part so as to be slidable in the axial direction. It is configured to protrude from the body to correspond to the spiral slope of the rotary cylinder.

Next, the operation of the punch 20 according to this embodiment will be described. FIGS. 6 to 8 show the wall material 8 erected on the front side in order to allow the punch 20 according to the present embodiment to allow substantially one side of the wiring box 9 arranged on the back of the wall to face the wall surface. It is an explanatory view for explaining a method of drilling the through hole 10 by taking the case of drilling the through hole 10 as an example.
Is omitted for simplicity and simplified.

As described above, the gripper 1 of the rotary shaft 1
a is gripped by a chucking portion of a hand-held rotary drive tool (not shown), and is rotated by the rotary drive tool. The rotating shaft 1 is inserted through a center through hole of a body provided concentrically with a through hole 10 formed in a wall material and is detachably fixed thereto, and is separated from the center through hole by a predetermined distance. Since the blade body bracket 3 to which the drilling blade 4 is attached is detachably fixed to opposing positions on both sides, the blades 3 are integrally rotated by the driving rotation of the rotating shaft 1. ing. Therefore, each of the drilling blades 4 can rotate while drawing the same circular locus about the center of the center shaft 2, and
Since the distance between the center shaft 2 and the blade bracket 3 can be freely set, through holes having different diameters can be formed.

First, as shown in FIG. 6, a detecting unit 13d provided at an eccentric position of a wiring box disposed on the back of a wall and previously provided with a metal foil or a magnet can detect from a wall surface. When the point 2c provided at the tip of the center shaft 2 is pressed against the detected position of the detected portion 9d, the point 2c enters the surface of the wall material 8 and pierces, thereby causing the penetration of the through hole. Functions as positioning to fix the center position. That is, the center of the center shaft 2 is not displaced, and the through-hole 10 can be accurately provided.

Next, as shown in FIG. 7, when the entire piercing tool is pressed against the wall material 8, a coil spring (elastic body) 1d is provided inside the housing 1b, and the center shaft 2 projects in the projecting direction. Although the center shaft 2 is always urged, the center shaft 2 is pressed against the elastic force of the spring 1d while the tip 2c is kept in contact with the surface of the wall member 8, and the housing 1 is
b can be immersed inward, and the peripheral end of the cover body 7 can abut on a position corresponding to the outer peripheral edge of the through hole. Note that, at this time, since the perforation blades 4 are fixed at positions appropriately adjusted so as not to contact the perforated body, the perforation blades 4 do not hit the wall material 8. When the entire piercing tool is further pressed against the wall material 8, the center shaft 2 is moved inward of the housing 1b against the elastic force of the spring 1d while the tip 2c is kept in the surface of the body to be pierced. Can be further immersed, and all of the perforation blades 4 can abut against the wall material 8.

Next, the scrap catcher 7
When the hand-held rotary drive tool is rotationally driven while the h is positioned downward, the entire punch 20 is continuously pushed toward the wall material 8.
Only the drilling blade 4 can be advanced while being kept in the surface of the wall, and as shown in FIG. 8, a through-hole 10 can be drilled in the wall material 8 by the drilling blade 4 and disposed behind the wall. Part of one side of the wiring box can be exposed to the wall surface.

At this time, the scrap catcher 7h collects and stores the chips while preventing scattering of chips generated when the entire cover body 7 perforates the through hole 10 in the wall material 8. A through hole 10 can be formed. In particular, unlike the conventional piercing tool, after the piercing operation is completed, the scrap catcher 7h is disposed below as shown in FIG. 9, or the scrap catcher 7h is provided on the entire lower end (not shown). In the case of the piercing tool, the chips collected by the scrap catcher 7h can be held in a housed state, so that even if the piercing tool 20 is separated from the pierced body, or if the piercing tool 20 is inclined, Even if the tool 20 is transported while tilted,
The swarf stored in the scrap catcher 7h does not spill out, and can be appropriately removed and discarded through the discharge port 7a provided in the cover body 7.

When the drilling is completed, the cutout waste material remains in a form in which the point 2c provided on the center shaft 2 penetrates the center hole, and the cutout waste material is removed from the through-hole 10 in a state of sticking into the point 2c and discarded. it can.

Therefore, the piercing tool provided with the chip receiving cover body described as the first embodiment differs from the conventional piercing tool provided with a cover body having no discharge port, in the case where a through hole is formed. Even if the body to be drilled is inclined at various angles from the horizontal direction to the vertical direction, the chips can be held in the stored state without being scattered and scattered to one side, and the center shaft is completed when the drilling is completed. The cutout waste material remains in a state where the point 2c provided in the tip 2 penetrates the center hole. Therefore, the cutout waste material can be removed from the through hole 10 in a state where it is stuck into the point 2c, and can be discarded. Even if it is transported in a state where it is transported, the chips stored in the discharger 7e do not spill and can be properly discarded and disposed of.

Incidentally, the piercing device 1 of the first embodiment described above.
0 describes an embodiment of the present invention, and the “perforator provided with a chip receiving cover” of the present invention means, in a required manner, a cover body 7 whose end face abuts on the peripheral edge of the through hole. And a perforation blade 4 that is housed inside the cover body 7 and protrudes while rotating forward from an end surface of the cover body 7 to perforate the through hole 10 in the body to be perforated. Body 7
An openable and closable discharge port is formed on the
It refers to all the piercing tools having a configuration in which a discharge body capable of collecting and storing chips is detachably provided.

In practicing the present invention, various design changes can be made without departing from the scope of the present invention. For example, through a locking portion 7g formed on the peripheral edge of the discharge port 7a. Instead of a structure in which the discharge body 7e is detachably locked, a lid member formed to cover the entire surface of the discharge port 7a is pivotally supported or slid on the periphery of the discharge port 7a so as to be freely opened and closed. It may have a configuration (not shown).
The dimensions, materials, and the like of the cup-shaped leg 7b, the discharge port 7a, the discharge body 7e, the lid member, and the like are all matters that can be appropriately designed and changed.

Finally, there are various modes of using the piercing device of the present invention described above. For example, as shown in FIG. The arranged cable or a wiring device connected to the cable can be pulled out to the wall surface so as to face the wall surface, and can be fixed to the wall material via the wiring device mounting frame.

[0036]

As described above in detail, according to the piercing tool provided with the chip receiving cover according to the first aspect, the chips collected inside the cover body, particularly, collected and stored in the scrap catcher are discharged. And a lid member is openably and closably provided at the discharge port, so that chips produced when the through-hole is formed in the body to be drilled through the discharge port can be appropriately removed. It can be easily removed and the work site does not get dirty.

According to the piercing tool provided with the chip receiving cover according to the second aspect, the cover body is formed with a discharge port for discharging the chips collected and stored in the scrap catcher. Since the discharge port is provided with a discharge body that covers the discharge port so as to be detachable, the punch provided with the chip receiving cover has the function and effect of the punch provided with the chip receiving cover according to claim 1. In addition, the chips collected and stored in the scrap catcher are collected on the inner surface of the discharger, and the discharger is removed while preventing the chips from falling out, so that the chips can be reliably removed as it is.

That is, the punch having the chip receiving cover according to the present invention has a simple structure, and can collect and store the chips inside the cover body at the work site. Through holes can be drilled in the body to be pierced without being scattered or spilled and dissipated to one side, and even if the piercing tool is separated from the body to be pierced, the chips are retained inside the cover body and retained In addition, there is an effect that the chips can be easily taken out and discarded, and the workability of drilling the through holes becomes excellent.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing a punch according to an embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing the piercing device of FIG. 1;

FIG. 3 is an overall perspective view showing an appearance of a cover body.

FIG. 4 is a partially cutaway side view showing a main part of the cover body of FIG. 3;

FIG. 5 is a bottom view of the cover body of FIG. 3;

FIG. 6 is a vertical cross-sectional view showing a state where a portion corresponding to a detected portion of the wiring box is detected from the front side of the perforated body by a detector.

FIG. 7 is a vertical cross-sectional view showing a state in which a through-hole having a center corresponding to the position to be detected of the wiring box is drilled through the drilled body using the drilling tool. .

FIG. 8 is a view showing a state in which a through hole is formed in a body to be drilled;
It is a longitudinal cross-sectional view which shows the state which has broken off the to-be-detected part. In the case of a reusable type that is detachably hooked, it is removed from the wiring box and reused.

FIG. 9 is an explanatory view of a main part showing a state where chips collected and stored in a scrap catcher are collected on a discharge body side, and thereafter, the discharge body is removed together with the chips and discarded. .

FIG. 10 is a perspective view showing another embodiment related to the use of the piercing device of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Rotating shaft 1a ... Grasping part 1b ... Housing 1c ... Attachment part 1d ... Spring (elastic body) 2 ... Center shaft 2a ... Attachment part 2b ... Stopper ring (detachment means) 2c ... Pointed end 3 .... Blade body bracket 3a ... female screw 3b ... through hole 4 ... drilling blade 5 ... rotating body 6 ... body block 7 ... cover body 7a ... discharge port 7b ... leg 7c ... insertion hole 7d ... cylindrical part 7e ... discharge body 7f ... peripheral edge 7g ... locking Part 7h Scrap catcher 7i Dropping surface 8 Wall material 9 Wiring box 9a Wiring box body 9b Positioning part 9c Boss 9d Detected part 10 Through hole 11 Bolt 12 Cut depth adjusting device DESCRIPTION OF SYMBOLS 13 ... Detector 14 ... Chip 15a ... Wiring equipment mounting frame 15b ... Wiring equipment 20 ... Punch

Claims (2)

[Claims] 1. A chip receiving cover body having an end surface abutting on a peripheral edge of a through hole to be bored in a body to be bored,
A piercing tool having a piercing blade that is housed inside the cover body and that protrudes while rotating forward from an end face of the cover body to pierce the through-hole with respect to the pierced body, A perforation provided with a chip receiving cover body, wherein a discharge port for removing chips collected inside the chip receiving cover body is formed in the receiving cover body so as to be freely opened and closed. Utensils. 2. A piercing tool provided with the chip receiving cover body, wherein the chip receiving cover body collects and removes chips generated when the through-hole is formed. The emitter that can be
The piercing device provided with a chip receiving cover according to claim 1, wherein the piercing device is detachably attached so as to cover the discharge port.