JP3661498B2 - Auxiliary tool for drilling machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates again and again aid for drilling machines, relates in particular aid for drilling machines used in renovation work of the building again and again.
[0002]
[Prior art]
In building renewal work, etc., concrete drilling work is performed by an electric drill (drilling machine) equipped with a hollow drill such as a diamond bit. This electric drill supplies water or compressed air to the tip of a rotating hollow drill to cool the hollow drill and remove chips generated during drilling.
[0003]
In the drilling operation by the electric drill, water containing compressed powder or compressed air flows out from the drilled hole and the surroundings are contaminated, so an auxiliary tool for discharging water and powder is necessary. The auxiliary tool disclosed in Japanese Patent Laid-Open No. 3-38311 is formed in a substantially hemispherical shape and is attached to a drilling position on the wall surface. The auxiliary tool is connected to a suction machine, and the suction machine is driven to remove water and compressed air supplied to the tip of the drill, as well as chips generated during drilling.
[0004]
[Problems to be solved by the invention]
However, the auxiliary tool disclosed in Japanese Patent Laid-Open No. 3-38311 has a drawback that soundproofing measures are not sufficiently taken although measures against water and dust are taken. For this reason, the worker had to wear protective equipment for measures against noise disturbance.
[0005]
In addition, since the drilling position is difficult to see from the outside when the auxiliary tool is attached to the wall surface, it is difficult to accurately match the drilling position and the hole for inserting the drill, and the drilling operation could not be performed efficiently. .
[0006]
Furthermore, although the auxiliary tool is adsorbed to the wall surface by the negative pressure generated in the suction chamber, there is a risk that the auxiliary tool may come off due to vibration during drilling, so the drilling operation must be performed while holding the auxiliary tool. . For this reason, drilling work could not be performed efficiently.
[0007]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide an auxiliary tool for a drilling machine that is excellent in soundproofing, dustproofing, and waterproofness and that can be efficiently operated.
[0008]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided an auxiliary tool for a drilling machine used for drilling a wall surface by rotating a drill of the drilling machine in order to achieve the above object, wherein the auxiliary tool is a main body of the drilling machine. And an outer cylinder made of a sound insulating material , and provided in the outer cylinder so as to be able to move in and out and urged in a protruding direction by an urging means, and attached to the inner cylinder made of the sound insulating material , and a tip of the inner cylinder, An annular close contact member that tightly contacts the inner cylinder with the wall surface, a sound absorbing material provided inside the inner cylinder, and an absorbent that is provided inside the outer cylinder and absorbs liquid , The inner cylinder is brought into contact with the wall surface via the contact member to surround the drill and to form a sealed space that can be expanded and contracted in the drilling direction in accordance with the drilling operation of the drill, and noise generated in the sealed space To prevent Characterized by comprising a function.
[0009]
According to the first aspect of the present invention, the auxiliary tool forms a sealed space surrounding the drill, and the auxiliary tool is provided with a soundproofing function, so that noise generated in the sealed space at the time of drilling can be suppressed. In addition, since the sealed space expands and contracts in the drilling direction in accordance with the drilling operation of the drill, the auxiliary tool does not hinder the drilling operation.
[0010]
According to a second aspect of the present invention, in the first aspect of the invention, a stopper that is detachably attached to the inner cylinder and that abuts on the outer cylinder to restrict the immersion operation of the inner cylinder, and an outer periphery of the inner cylinder And an index formed on the surface, and adjusting the drilling depth of the drill by attaching the stopper according to the index.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Below with reference to the accompanying drawings, it will be described in detail by aid again and again with for drilling machine according to the present invention.
[0012]
FIG.1 and FIG.2 is the longitudinal cross-sectional view and top view which show schematic structure of the auxiliary tool 10 of 1st Embodiment.
[0013]
As shown in these drawings, the auxiliary tool 10 is attached to the distal end portion of a portable electric drill 12. A hollow drill (for example, a diamond implemented core bit) 14 for drilling is attached to the electric drill 12, and the wall made of concrete or the like can be drilled by rotating the hollow drill 14. In addition, a fluid supply source (not shown) is connected to the electric drill 12, and a fluid such as water or compressed air is supplied from the fluid supply source to the tip of the hollow drill 14 through the inside of the hollow drill 14. This fluid cools the hollow drill 14 while removing chips generated during drilling from the hole. Reference numeral 16 denotes an operation switch for driving or stopping the electric drill 12.
[0014]
The auxiliary tool 10 is mainly composed of an inner cylinder 22 and an outer cylinder 24 disposed around the hollow drill 14. The outer cylinder 24 is formed of a sound insulating material and can block transmission of noise. Further, the outer cylinder 24 has a mounting hole 24A formed on the base end side, and the non-rotating portion 12A of the electric drill 12 is inserted into the mounting hole 24A. A packing 28 is provided in the gap between the mounting hole 24 </ b> A and the non-rotating portion 12 </ b> A, and the gap is sealed by the packing 28. Further, an absorbent (for example, a polymer absorbent) 30 that absorbs a liquid such as water is laid inside the outer cylinder 24.
[0015]
On the other hand, the inner cylinder 22 is provided so as to be able to appear and retract with respect to the outer cylinder 24. The inner cylinder 22 is formed of a sound insulating material like the outer cylinder 24, and a sound absorbing material 32 formed of glass wool or the like is attached to the inner cylinder 22. Further, a close contact member 34 formed in an annular shape is attached to the tip of the inner cylinder 22. The contact member 34 is made of an elastic body such as rubber, and when the inner tube 22 is brought into contact with the wall surface, the inner tube 22 and the wall surface are in close contact with each other through the contact member 34.
[0016]
The inner cylinder 22 and the outer cylinder 24 are attached via a tension spring 36 as shown in FIG. The tension spring 36 is attached between a protruding portion 22 </ b> A that protrudes from the base end of the outer peripheral surface of the inner cylinder 22 and a protruding portion 24 </ b> B that is attached to the distal end of the outer cylinder 24. Accordingly, the inner cylinder 22 is pulled by the tension spring 36 and is urged in the protruding direction with respect to the outer cylinder 22. The protruding portion 24B of the outer cylinder 24 is detachably attached by a screw 38. By removing the screw 38, the inner cylinder 22 can be removed from the outer cylinder 24 and the inside can be cleaned.
[0017]
A stopper 40 is detachably attached to the inner cylinder 22. As shown in FIG. 4, the stopper 40 is configured such that the ends of the pair of semicircular members 42, 42 are connected by a hinge 44 and the other ends of the pair of semicircular members 42, 42 are connected to each other. It is configured to be connected by a connector 46. The stopper 40 is fixed to the inner cylinder 22 by the inner peripheral surfaces of the pair of semi-annular members 42 and 42 sandwiching the outer peripheral surface of the inner cylinder 22. Accordingly, when the inner cylinder 22 is immersed in the outer cylinder 24, the stopper 40 comes into contact with the outer cylinder 24, and the immersion operation of the inner cylinder 22 is restricted. When the immersion operation of the inner cylinder 22 is regulated, the drilling operation by the hollow drill 14 is also regulated, so that the drilling depth can be adjusted by the mounting position of the stopper 40.
[0018]
As shown in FIG. 3, an index 48 is formed on the outer peripheral surface of the inner cylinder 22. When the stopper 40 is attached according to the index 48, the drilling depth can be adjusted.
[0019]
Next, the operation of the auxiliary tool 10 configured as described above will be described with reference to FIG. Hereinafter, an example of perforating the wall material on the ceiling surface will be described.
[0020]
First, as shown in FIG. 5A, the stopper 40 is attracted to the proximal end side against the elastic force of the tension spring 36 (see FIG. 3) to expose the distal end of the hollow drill 14, and the distal end is used as a wall material. Align with 50 drilling positions 50A.
[0021]
Next, the stopper 40 is released, and as shown in FIG. 5 (b), the inner cylinder 22 is protruded to the tip side by the urging force of the tension spring (see FIG. 3), and the wall surface 50 is interposed via the contact member 34 of the inner cylinder 22. Adhere to. Thereby, the auxiliary tool 10 surrounds the hollow drill 14 with the inner cylinder 22 and the outer cylinder 24 and forms a sealed space that can expand and contract in the drilling direction in accordance with the drilling operation of the hollow drill 14.
[0022]
Next, the operation drill 16 in FIG. 1 is pressed to drive the electric drill 12, and the hollow drill 14 is rotated while supplying fluid (water, compressed air, compressed air containing water, etc.) to the tip of the hollow drill 14. Let Thereby, as shown in FIG.5 (c), the hollow drill 14 perforates the wall surface 50. FIG. At this time, the inner cylinder 22 is pressed by the wall surface 50 and is immersed in the outer cylinder 24, and the sealed space is reduced. Therefore, since the auxiliary tool 10 does not hinder the drilling operation, the wall surface 50 is smoothly drilled. When the wall surface 50 is drilled, chips are generated. However, since the hollow drill 14 is surrounded by the auxiliary tool 10, the chips do not scatter to the outside and contaminate the surroundings. Moreover, since the water supplied to the hollow drill 14 is absorbed by the absorbent 30, there is no need to discharge it. Furthermore, although noise is generated due to the drilling, the hollow drill 14 is doubly surrounded by the inner cylinder 22 and the outer cylinder 24 formed of a sound insulating material, and a sound absorbing material is attached to the inner side of the inner cylinder 22. Therefore, noise can be effectively suppressed.
[0023]
When the drilling operation is performed to a predetermined drilling depth, the stopper 40 comes into contact with the outer cylinder 24, and the immersion operation of the inner cylinder 22 is restricted. Thereby, since the drilling operation by the hollow drill 14 is restricted, a hole having a predetermined drilling depth can be accurately formed.
[0024]
As described above, the auxiliary tool 10 according to the first embodiment surrounds the hollow drill 14 with the inner cylinder 22 and the outer cylinder 24 made of a sound insulating material, and also has a sound absorbing material inside the inner cylinder 22. Noise generated during drilling can be effectively suppressed. Therefore, it is not necessary for the operator to use protective equipment for noise disturbance countermeasures, so that the drilling work can be performed efficiently.
[0025]
Note that the soundproofing function for suppressing noise generated in the sealed space is not limited to the above-described embodiment. For example, the auxiliary tool 10 is formed of a soundproofing material, or the soundproofing material is provided in the sealed space. Either one may be provided.
[0026]
Moreover, the window which can visually recognize the inside may be provided in the auxiliary tool 10 described above, and the tip of the hollow drill 14 may be aligned with the drilling position 50A while visually checking the drilling position 50A.
[0027]
Next, an auxiliary tool 60 for a drilling machine according to a second embodiment will be described.
[0028]
FIG. 6 is an explanatory diagram showing an overall configuration of a perforation apparatus 62 using the auxiliary tool 60 of the second embodiment.
[0029]
As shown in the figure, the drilling device 62 mainly includes an auxiliary tool 60, a fixing tool 64, an electric drill 66, a suction device 68, a tank 70, and a compressor 72.
[0030]
The electric drill 66 is equipped with a hollow drill 74 and a tank 70 connected via a hose 76. The tank 70 stores water and is connected with a compressor 72. As a result, the pressure in the tank 70 can be increased by the compressor 72 and the water in the tank 70 can be fed to the electric drill 66, and the fed water can pass through the hollow drill 74 through the hollow drill 74. Supplied at the tip.
[0031]
The auxiliary tool 60 is formed of a sound insulating material, and as illustrated in FIGS. 7 and 8, is formed in a short cylindrical shape in which one side is opened and the other side is closed. An annular close contact member 78 made of an elastic body such as rubber is attached to the end of the auxiliary tool 60 on the opening side. Further, a discharge port 80 is formed so as to protrude on the closed side, and a suction machine 68 in FIG. 6 is connected to the discharge port 80 via a hose 82.
[0032]
A transparent or translucent acrylic plate 86 is attached to the closing side of the auxiliary tool 60 in FIG. 7 so that the inside of the auxiliary tool 60 can be visually recognized through the acrylic plate 86. A hole 84 slightly larger than the diameter of the hollow drill 74 is formed in the acrylic plate 86, and the hollow drill 74 is inserted from the hole 84 to perform a drilling operation.
[0033]
As shown in FIG. 8, rod-shaped indexes 88, 88... Project from the outer peripheral surface of the auxiliary tool 60 at positions that are 90 degrees apart from the hole 84. Therefore, as shown in FIG. 9, the wall 90 is marked in a cross shape with the drilling position 90A as the center, and by aligning the marked line 90B with the position of the index 88, the hole 84 for inserting the drill The drilling position 90A can be accurately aligned. As shown in FIG. 8, if the cross-shaped index 86A is also formed on the acrylic plate 86, the auxiliary tool 60 can be positioned more easily.
[0034]
The auxiliary tool 60 is fixed by a fixing tool 64 as shown in FIG. The fixture 64 includes a pole (bar member) 92 and an arm 94. The pole 92 has elasticity and is configured to be biased in the extending direction when reduced. Rubber caps 93 and 93 are attached to both ends of the pole 92 so as not to damage the pressing wall surface. As shown in FIG. 10, the arm 94 supports the auxiliary tool 60 at one end, and the other end is rotatably supported by a pole 92. Further, the arm 94 is configured by connecting a rod 95 formed with a slit 95A and a rod 96 formed with a slit 96A with a screw 97 through the slits 95A and 96A. Therefore, the arm 94 can be expanded and contracted by changing the connecting position of the rods 95 and 96. The fixture 64 is assembled by inserting the arm 94 into the pole 92 and then covering the cap 93.
[0035]
Next, the operation of the auxiliary tool 60 configured as described above will be described. In the following, an example of drilling the lower surface of the upper floor slab as the wall surface 90 will be described, but the same applies to the case of drilling the side surface.
[0036]
First, as shown in FIG. 9, the wall surface 90 is marked in a cross shape around the drilling position 90A. Then, the contact member 78 of the auxiliary tool 60 is brought into close contact with the wall surface while the index 88 of the auxiliary tool 60 overlaps the marked line 90B. Thereby, the hole 84 for inserting the drill of the auxiliary tool 60 accurately overlaps the drilling position 90 </ b> A of the wall surface 90.
[0037]
Next, the suction device 68 is connected to the discharge port 80 of the auxiliary tool 60 and the suction device 68 is driven. Thereby, the inside of the auxiliary tool 60 becomes negative pressure, and the auxiliary tool 60 is attracted to the wall surface 90.
[0038]
Next, as shown in FIG. 6, the auxiliary tool 60 is fixed by the fixing tool 64. The fixing tool 64 first shrinks the pole 92 and extends the reduced pole 92 between the wall surface 90 and the floor surface 98 to attach it vertically. Then, the arm 94 is rotated with respect to the pole 92 and the length of the arm 94 is adjusted to support the auxiliary tool 60 at the tip of the arm 94. Thereby, since the auxiliary tool 60 is fixed reliably, even if the wall surface 90 vibrates at the time of drilling, the auxiliary tool 60 does not fall from the wall surface 90.
[0039]
Next, as shown in FIG. 9, the hollow drill 74 of the electric drill 66 is inserted into the drill insertion hole 84 of the auxiliary tool 60, and the electric drill 66 is driven. As a result, water is supplied to the tip of the hollow drill 74, and the hollow drill 74 rotates and the wall surface 90 is perforated. At this time, swarf is generated by perforating the wall surface 90, but the generated swarf is sucked together with the fluid by the suction device 68, so that the swarf is not scattered outside and contaminates the surroundings. Moreover, although noise is generated in the auxiliary tool 60 due to the perforation, the noise can be suppressed because the auxiliary tool 60 is formed of a sound insulating material.
[0040]
Thus, in this Embodiment, since the said auxiliary tool 60 is formed with the sound insulation material, the noise which generate | occur | produces at the time of drilling can be suppressed.
[0041]
Further, since the auxiliary tool 60 is provided with the index 88, the auxiliary tool 60 can be accurately attached to a predetermined position of the wall surface 90. Further, since the drilling position 90A can be visually recognized from the acrylic plate 86 of the auxiliary tool 60, the drilling position 90A and the position of the drill insertion hole 84 can be easily matched.
[0042]
Further, since the auxiliary tool 60 is fixed by the fixing tool 64, the auxiliary tool 60 will not come off even if the wall surface 90 vibrates during drilling. Therefore, since it is not necessary to hold the auxiliary tool 60 during drilling, the drilling operation can be performed efficiently.
[0043]
In the second embodiment, a sound absorbing material may be provided inside the auxiliary tool 60 to suppress noise during drilling. Further, the acrylic plates 86 may be provided in a double manner to provide a soundproof function.
[0044]
【The invention's effect】
As described above, according to the assisting tool according to the present invention, the assisting tool forms a sealed space that surrounds the drill, and the assisting tool is provided with a soundproofing function, so that noise generated in the sealed space during drilling is suppressed. can do.
[Brief description of the drawings]
1 is a longitudinal sectional view showing a schematic structure of an auxiliary tool according to a first embodiment. FIG. 2 is a plan view of the auxiliary tool shown in FIG. 1. FIG. 3 is a partial view of the auxiliary tool shown in FIG. Fig. 4 is a plan view showing the stopper shown in Fig. 1. Fig. 5 is an explanatory view showing the operation of the auxiliary tool of the first embodiment. Fig. 6 is an auxiliary tool of the second embodiment. FIG. 7 is a side view of an auxiliary tool according to a second embodiment. FIG. 8 is a bottom view of the auxiliary tool shown in FIG. 7. FIG. Explanatory drawing explaining the attachment method of the auxiliary | assistant tool. [FIG. 10] Explanatory drawing explaining the structure of the fixing tool shown in FIG.
DESCRIPTION OF SYMBOLS 10 ... Auxiliary tool (of 1st Embodiment), 12 ... Electric drill, 14 ... Hollow drill, 22 ... Inner cylinder, 24 ... Outer cylinder, 28 ... Packing, 30 ... Absorber, 32 ... Sound absorption material, 34 ... Adhering member, 40 ... stopper, 60 ... auxiliary tool (of the second embodiment), 64 ... fixing tool, 86 ... acrylic plate, 88 ... index

Claims (2)

In an auxiliary tool for a drilling machine used when drilling a wall surface by rotating a drill of the drilling machine,
The auxiliary tool is attached to the body of the drilling machine, and an outer cylinder made of a sound insulating material ,
An inner cylinder made of a sound insulating material, slidably provided in the outer cylinder and urged in a protruding direction by an urging means ;
An annular contact member that is attached to the tip of the inner cylinder and that closely contacts the inner cylinder to the wall surface;
A sound absorbing material provided inside the inner cylinder;
An absorbent that is provided inside the outer cylinder and absorbs liquid ;
The inner cylinder is brought into contact with the wall surface through the contact member to surround the drill and to form a sealed space that can expand and contract in the drilling direction in accordance with the drilling operation of the drill, and noise generated in the sealed space An auxiliary tool for a drilling machine, which is provided with a soundproofing function that suppresses noise. A stopper that is detachably attached to the inner cylinder and regulates the immersing operation of the inner cylinder by contacting the outer cylinder;
An index formed on the outer peripheral surface of the inner cylinder;
The auxiliary tool for a drilling machine according to claim 1, wherein the drilling depth of the drill is adjusted by attaching the stopper according to the index.

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