JPH10612A - Rotary drill apparatus and attachment apparatus for rotary drill apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized, lightweight rotary drill apparatus and an attachment apparatus which enable a process in which a cooling agent which is prepared by mixing a low boiling point organic solvent with a liquid base material is supplied from an aerosol, and repair holes, etc., are formed on the wall surface etc., by simple work. SOLUTION: An apparatus is equipped with a drill head 58 having a drill pit 77 which ejects a cooling medium, a rotary shaft member in which the drill head 58 is attached to one end and the other end is chucked by a drill chuck mechanism to be rotated, a valve member which opens/closes a cooling medium channel, and an outside cylinder member 43 in which an installation part for a rotary drill apparatus 35 is formed. Aerosol cans in which a cooling agent which is prepared by mixing a low boiling point organic solvent with a liquid base material is sealed are placed in a portable casing 65 to constitute a cooling agent supply part 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary drilling apparatus and a rotary drilling apparatus having a drive motor and a drill chuck mechanism suitable for drilling a hole for repair on a wall or the like of a building. The present invention relates to an attachment device for a rotary drill device which is detachably attached.

[0002]

2. Description of the Related Art For example, in a concrete building,
When repairing cracks or tiles that have occurred on the wall surface or ceiling, or peeling of the exterior wall, etc., make holes for repair at these locations and fill the holes with adhesive. The anchor pin is being driven. Also,
In a concrete building, a waterproof treatment is indispensable for maintaining a good condition of a wall surface, a ceiling, and the like for a long period of time. In particular, cracks generated on the wall
Rainwater, etc., penetrates the inside and erodes the concrete. In addition, the rainwater or the like repeatedly freezes and melts in the winter to expand cracks, and in the worst case, corrodes and destroys even the internal steel frame and the reinforcing steel.

The above-mentioned repair hole is generally drilled in a predetermined location such as a wall surface by using a rotary drill device such as a vibration drill device or a rotary drill device. The vibration drill device has a feature that the drilling operation can be easily performed by eliminating the need for cooling water or the like. There was a problem in using it for repair work in hotels, hospitals, etc. In addition, when the vibration drill device is used in a state where the drilling position, the hole diameter, and the like are wrong, the problem that the crack to be repaired is insignificantly expanded is caused.

[0004] For this reason, recently, a rotary drill device equipped with a diamond pit is generally used for the above-mentioned repair work. In this rotary drill device, drilling is performed while supplying cooling water from the tip of a drill pit in order to improve work efficiency or reduce noise. The cooling water is sprayed in a mist state using compressed air in order to efficiently cool the drill pit and remove dust generated from the drilled holes.

For example, Japanese Unexamined Patent Publication No. Sho 60-262608 "Impactless drilling method" discloses that a drill blade (drill pit) having a feed path penetrating to the tip is liquefied at a low temperature such as air, water or carbon dioxide gas. 2. Description of the Related Art There is disclosed a rotary drill device that ejects a fluid such as a gas to efficiently cool a drill and discharge dust. The rotary drill device of this publication is provided with a drill guide means for defining a drilling position and a dustproof structure for preventing generated dust from scattering.

[0006] Japanese Patent Application Laid-Open No. Hei 1-206005, "Punching Method for Concrete Buildings" also discloses that chips are efficiently discharged by ejecting compressed air forming a reverse flow in the drilling from the tip of the drill pit. A rotary drill device as described above is disclosed. By using no cooling water, the rotary drilling device has the characteristic that the supplied cooling water mixes with the chips and contaminates the surroundings of the drilled portion, or can be used in places without water facilities. doing.

[0007]

The conventional rotary drilling apparatus generally requires a supply source for supplying cooling water and compressed air to the drill pit. Therefore, in drilling work, in addition to the rotary drilling equipment, equipment such as a compressor for supplying compressed air, a water tank storing cooling water, or a hose connecting the compressor and the water tank to the rotary drilling equipment are required. Was needed. These facilities have a problem that the total weight is about 40 kg and the handling thereof is extremely inconvenient.

The drilling operation requires a setup operation in which a compressor and a water tank are installed in the most efficient place, and then a hose is pulled from the compressor and the water tank to a rotary drill device. The work place is restricted by the compressor and the water tank, which are large in weight and external shape, which sometimes hinders the drilling work.

[0009] In addition, the rotary drilling device to which the hose is connected has a problem that the workability at high places is poor because the weight becomes heavy and the drawing operation is troublesome. Furthermore, the conventional rotary drill device is not suitable for performing a relatively simple operation because the above-described complicated setup operation and the like are required.

[0010] Further, since the above-mentioned equipment is extremely expensive, it is difficult to have a large number of such equipment, and even a large site must be handled by a small number of equipment. For this reason, the repair work has a problem that it takes a lot of construction days and the construction cost becomes enormous. Further, the conventional rotary drilling device has a problem that, for example, when filling a drilled hole with a waterproofing agent at the time of waterproofing work, it takes time for the hole in which the cooling water remains to dry, and the construction period is lengthened. there were. In addition, the conventional rotary drilling device has a problem that it is difficult to use it when drilling a repair hole in a ceiling or the like because a large amount of cooling water is used.

By the way, the above-mentioned prior application disclosed in Japanese Patent Application Laid-Open No. Sho 60-26
No. 2608, “Rotation Drilling Method”,
For example, by using a low-temperature liquefied gas for cooling the drill, it is possible to solve the problem caused by the treatment of the hose as compared with the case where cooling water is used. However,
This rotary drilling device also requires a compressor or the like in order to blow gas with sufficient pressure into the drilling hole, eliminating the problem that the whole device becomes expensive and cumbersome to handle. Can not. In addition, this rotary drilling device has a problem that a drilling position is difficult to see due to a dustproof film for preventing scattering of dust, and accurate drilling work cannot be performed.

The rotary drilling apparatus disclosed in another prior application, Japanese Patent Application Laid-Open No. Hei 1-206005, "Punching Method for Concrete Buildings", can efficiently remove chips from the drilled hole, but it is also expensive. Requires a heavy compressor.

The present invention solves the above-mentioned problems of the conventional rotary drilling apparatus, and makes it possible to drill a hole for repair or the like by extremely simple work on a wall or the like of a building. It is an object of the present invention to provide a lightweight rotary drill device.

Further, the present invention provides a small, inexpensive, and light-weight, which can be attached to a commercially available rotary drilling device and makes it possible to drill a hole for repair or the like by extremely simple operation on a wall or the like of a building. It is an object of the present invention to provide an attachment device for a rotary drill device.

[0015]

A rotary drill device according to the present invention, which has achieved the above-mentioned object, comprises a main body having a drive motor and a drill chuck mechanism, and a cooling medium passage opening at the tip of the blade. A drill head formed over the entire length of the drill support, a drill support attached to the one end, and the other end chucked by a drill chuck mechanism of a driving unit and rotationally driven, and a cooling medium flow of the drill head. A drill unit having a valve mechanism for opening and closing a passage, and an aerosol can in which a cooling medium formed by mixing a liquid as a base material and a low-boiling organic solvent is applied with an injection pressure and sealed therein. And a cooling unit for injecting and supplying a cooling medium into a cooling medium flow path of the drill head via a valve mechanism of the drill unit.

According to the rotary drill device according to the present invention configured as described above, the cooling medium is injected and supplied from the aerosol can forming the cooling unit into the drill head of the drill unit via the valve mechanism. It is sprayed from the tip of the blade into a hole such as a wall surface. In the rotary drill device, the drill head is cooled by the heat of vaporization of the cooling medium, and chips are removed from the hole to be drilled, thereby improving the efficiency of the drilling operation. The rotary drill device eliminates the need for a tank for storing cooling water, a hose, or a compressor for supplying compressed air, shortening the setup time for installing these devices, etc., as well as simple work and quick operation in the holes. Drying greatly reduces the working time.

Further, the attachment device for a rotary drill device according to the present invention, which has achieved the above-mentioned object, is attached to and detached from a rotary drill device having a drive motor and a drill chuck mechanism. A cylindrical drill head formed over the entire length inside, a drill support member that is attached to the one end and the other end is chucked and driven to rotate by a drill chuck mechanism of a rotary drill device, It comprises a valve mechanism for opening and closing the cooling medium flow path of the drill head, and an outer cylinder member provided with a mounting portion for mounting to the rotary drill device.

According to the attachment device for a rotary drilling device according to the present invention configured as described above, a cooling medium is prepared by mixing a low-boiling organic solvent with a liquid as a base material from an aerosol can by opening a valve mechanism. Is injected and supplied into the coolant passage of the drill head, and is injected from the tip of the blade into a hole portion such as a wall surface. The attachment device for the rotary drill device is a tank that stores the cooling water by efficiently cooling the drill head by the heat of vaporization of the cooling medium and removing chips from the drilled holes by attaching to the rotary drill device. Efficient drilling work is made possible by eliminating the need for a hose or a compressor for supplying compressed air.

[0019]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a first embodiment of a rotary drilling apparatus according to the present invention. This rotary drilling apparatus 1 is used to separate cracks and tiles generated on a wall or a ceiling of a concrete building or to remove an exterior wall. During repair work such as lifting, it is used when drilling a repair hole for repair for filling these locations with an adhesive or driving an anchor pin.
The rotary drill device 1 includes a drill body 2 and a drill 3
And a cooling unit 4. The drill main body 2 is configured in the same manner as a commercially available rotary drill device, and details are omitted, but a hand-held portion 2b is provided on one side and a drive motor and a well-known motor are provided inside a housing 2a provided with a power switch 2c. Drill chuck mechanism etc. are built in.

The drill portion 3 includes a cylindrical housing 5 and a rotating shaft 6.
, A drill head 7, a rotation stopping member 8, a switching lever 9 of a valve mechanism, and the like, and are detachably attached to the other side of the drill body 2. The cylindrical housing 5 has a bearing mechanism (not shown) provided therein, and supports the rotating shaft 6 and the drill head 7 so as to be coaxial with each other and to rotate integrally. The cylindrical housing 5 has a liquid-tight space therein for receiving a coolant supplied from a cooling unit 4 described later.

The rotating shaft 6 is driven to rotate by being projected from one side of the cylindrical housing 5 and chucked by the drill chuck mechanism of the drill body 2. Drill head 7
Is composed of a drill pit support 7a and a drill pit 7b. Although not shown, the drill pit support portion 7a has an elongated cylindrical shape in which a coolant flow path communicating with a space portion of the cylindrical housing 5 is formed over the entire length in the axial direction. One end of the drill pit support portion 7a is driven to rotate by being chucked by the drill chuck mechanism of the drill body 2, and the other end is provided with a drill pit 7b. The drill pit 7b has an opening at the tip end thereof, which is communicated with the coolant channel, and is formed of, for example, diamond or the like, and forms a cutting edge for drilling a wall surface or the like.

When a wall or the like is repaired, a repair hole having an inner diameter of about 4.5 mm to 8 mm is generally formed. In the drill pit 7b having this outer diameter,
By using a coolant described below, the diameter of a nozzle provided in the coolant channel is set to 0.3 mm or less. The drill pit 7b has a relatively large 18m.
When drilling a repair hole of about m to 20 mm, the nozzle diameter is formed to about 0.5 mm.

The rotation stopping member 8 is a cylindrical housing 5 of the drill portion 3.
And is provided so as to protrude substantially in a crank shape. When the rotation stop device 8 performs a drilling operation to be described later with the rotary drill device 1, the operator grips the hand holding portion 2 b of the drill body 2 with one hand and holds the hand holding portion 2 b with the other hand. The drill head 7 is held in a stable state with respect to the drilling position.

The cooling unit 4 includes two aerosol cans 10A and 10B (hereinafter, collectively referred to as aerosol cans 10) enclosing a coolant, a holder casing 11 for accommodating the aerosol cans 10 therein, and an aerosol can. It comprises a hose 12 and the like connecting the valve 10 and the valve mechanism of the drill unit 2. When the aerosol can 10 is loaded into the holder casing 11, the cooling section 4 pushes the stem of the aerosol can 10 so that the enclosed coolant can be supplied. When the switching lever 9 is operated and the valve mechanism is opened, the coolant is supplied from the aerosol can 10 to the drill portion 3, and from the injection port of the drill pit 7 b through the coolant channel in the drill head 7. It is injected into the repair hole. The coolant removes chips from the inside of the repair hole and cools the drill head 7.

Although not shown, the holder casing 11 is provided with a harness and the like, and can be mounted on a worker's waist or the like. The cooling unit 4 weighs about 900 g per aerosol can 10 and can be carried sufficiently even with the weight of the holder casing 11, and does not hinder the drilling of the repair hole. . In addition, since the cooling unit 4 reduces the amount of drawing of the hose 12, the handling becomes simple.

In the initial storage state of the aerosol can 10, there is a legal regulation that the content of the filling material is 1000 milliliters or less and the filling rate is 90% or less. 800 ml to 850
Milliliter of filling is filled. The aerosol can 10 is filled with a coolant containing a liquid as a base material and a low-boiling organic solvent mixed therein at a jet pressure described later. As the substrate, use of, for example, volatile alcohol or acetone may be considered, but it is preferable to use inexpensive, safe and easy-to-handle water.

In the case of an aerosol can in which only cooling water is simply pressurized as a coolant and filled in the can, the cooling water is drilled with a sufficient injection pressure from the injection port of the drill pit 7b. It is difficult to spray into the inside of the repair hole.
Further, an aerosol can filled with only the cooling water requires a drill head 7 having a nozzle diameter of about 2.0 mm, and cannot be used for drilling a repair hole having a small inner diameter.

Therefore, the aerosol can 10 is mixed with water as a base material, for example, methanol, ethanol or various ester materials, a low boiling organic solvent such as dimethyl ether, and / or a soluble liquefied gas such as dimethyl ether. The coolant constituted by the liquid is filled. The low-boiling organic solvent is mixed at a ratio of 5% by weight to 90% by weight with respect to the cooling water, and exhibits a molten or emulsified state depending on its properties. The soluble liquefied gas is mixed at a ratio of 5% by weight to 60% by weight with respect to the cooling water.

For example, a coolant obtained by dissolving dimethyl ether in cooling water has extremely high fluidity as compared with a coolant consisting of only cooling water, and the diameter of the nozzle of the drill head 7 is about 1/10 of 0.2 mm. Degree.
In drilling operation, the drill head 7 has a coolant injection pressure of 2.0 from the injection port of the drill pit 7b.
Even if it is about Kg / cm ² , the drilling efficiency is sufficiently maintained. Therefore, the rotary drill device 1 can be used for a long time, and two aerosol cans 10 can be used on average.
Five repair holes can be drilled.

Further, the aerosol can 10 is filled with an inert gas such as a carbon dioxide gas or a nitrogen gas in order to minimize a decrease in the injection pressure of the coolant even when the outside air temperature is low. . The inert gas increases the internal pressure of the aerosol can 10 to 6.0 kg / cm at an outside air temperature of 25 ° C.
^An amount sufficient to keep it in the range of ^{2 to} 6.5 kg / cm ² is filled.

The rotary drill 1 constructed as described above
Indicates that the operator holds the drill body 2 with the hand
The power switch 2c and the switching lever 9 are held in a state where the detent member 8 is gripped by the other hand and the drill pit 7b of the drill head 7 is applied to a drilling position such as a wall surface.
Is performed. The rotary drill device 1 includes a switch 2c
Is turned on, the drill head 7 is rotated via the rotary shaft 6, and the repair hole is drilled by the drill pit 7b. In the rotary drill device 1, a coolant is supplied from the cooling unit 4, and the coolant is jetted through a coolant channel into a repair hole drilled from the tip of the drill pit 7b.

The coolant is atomized by the action of the mixed auxiliary, and is rapidly vaporized and diffused by the external temperature and the frictional heat of the drill pit 7b due to the drilling operation. The drill pit 7b is cooled by the heat of vaporization of the coolant to maintain a good state and drill the repair hole. In addition, since the auxiliary agent is vaporized in the repair hole and its capacity rapidly expands by several hundred times, the coolant exhibits a state of being injected into the repair hole at a high pressure, so that the cooling water of the base material is formed. At the same time, chips and the like are efficiently discharged to the outside.

The coolant remaining inside the repaired hole is azeotropically oxidized with a low-boiling organic solvent and a liquefied gas. Dry the inside in a short time. The time required for drilling the repair hole of the rotary drill device 1 is almost the same as that of the conventional rotary drill device. However, the setup time is greatly reduced and the efficiency of the repair hole is improved by a simple operation. Since the drying time is approximately one-tenth, the construction period can be significantly reduced. In addition, the rotary drill device 1 is small and lightweight, and does not require the routing of long hoses, so that it is possible to safely perform work at high places such as wall surfaces and ceilings. In addition, since the rotary drill device 1 does not require a large amount of cooling water, it can be used even at a site without a water supply facility, and there are inconveniences such as water leakage disasters such as downstairs due to spilled cooling water and contamination of the site. Does not occur.

FIGS. 2 and 3 are views showing details of the internal structure of the drill body 2 of the rotary drill device 1 described above. The rotary drilling apparatus 1 operates the switching lever 9 while operating the switching lever 9 during the drilling operation, while the drill pit 7b rotates to actually start the drilling operation of the repair hole, and when the drilling of the repair hole is completed. A so-called automatic valve mechanism is provided to prevent the coolant from flowing out unnecessarily during operation of the pump. That is, in order to use the coolant efficiently, the rotary drill device 1 jets and supplies the coolant from the drill pit 7b only while actually drilling the repair hole.

The automatic valve mechanism includes a cylindrical housing 5 and a rotating shaft 6.
A valve member 13 provided on the rotating shaft 6;
A coupling member 14 that rotates integrally with the housing, a connection nozzle member 15 to which the drill head 7 is attached, a fixing member 16 that is fitted and fixed inside the cylindrical housing 5, and a rotating shaft 6 that connects the rotating shaft 6 to the cylindrical housing 5 A pair of bearings 1 rotatably supported inside
7A and 17B (hereinafter collectively referred to as a bearing 17), a pair of sealing members 18A and 18B (hereinafter collectively referred to as a sealing member 18), and members such as a coil spring 19.

The rotating shaft 6 is rotatably supported on the cylindrical housing 5 by exposing one end of the rotating shaft 6 by a bearing 17 incorporated at a predetermined interval therein. Further, the sealing member 1 is provided between the bearings 17 in the cylindrical housing 5.
The coolant supply space 21 is liquid-tightly divided by 8. The coolant supply space 21 is opened and closed by a switching lever 9.
Is connected to the coolant flow path 23 of the first embodiment.

The rotary shaft 6 has a D-cut portion 6a for chucking by a chucking mechanism of the drill main body 2 formed on the outer periphery of one end protruding and exposed from the cylindrical housing 5, and the other end. A flange portion 6b having an enlarged diameter and a reverse screw 6c formed on the outer periphery is integrally formed to protrude.
The rotating shaft 6 is prevented from coming off from the cylindrical housing 5 by the flange portion 6b abutting against one of the bearings 17B. The rotary shaft 6 is provided therein with a first coolant flow path 24 in the axial direction. This first coolant channel 24
The one end 24a bent toward the outer peripheral side of the rotary shaft 6 communicates with the coolant supply space 21 and the other end (opening) 24b is opened to the flange 6b side. First
The diameter of the coolant passage 24 is increased on the side of the opening 24b to form an enlarged space portion 24c. Note that the enlarged diameter space 24c also forms a coolant flow path as described later.

The valve member 13 is provided with a large-diameter space portion 24 of the rotary shaft 6.
It is movably incorporated in the axial direction in c. The valve member 13 has a substantially columnar shape having an outer diameter slightly smaller than the inner diameter of the enlarged diameter space portion 24c. A space portion through which the coolant flows is formed between the space portion and the portion 24c. Further, the valve member 13 is provided with the first coolant passage 2 by the coil spring 19 incorporated in the enlarged diameter space 24c.
In FIG. 4, it is urged to the left in FIG. 2, and its tip closes the opening 24b.

The coupling member 14 is formed in a substantially bottomed short cylindrical shape having an outer diameter substantially equal to the inner diameter of the cylindrical housing 5, and the inner peripheral screw is screwed into the reverse screw 6c of the flange 6b. As a result, the first coolant passage 24 is integrally combined with one end of the rotating shaft 6 so as to close the first coolant passage 24. This coupling member 14 is provided with a coolant supply port 14 a communicating with a first coolant channel 23 provided on the rotating shaft 6 at the center thereof. Coolant supply port 14
“a” has a slightly smaller diameter than the first coolant channel 23 and an inner diameter substantially the same as the distal end of the valve member 13.

The coupling member 14 has a cylindrical projection 14b integrally formed on one side surface thereof. The cylindrical protrusion 14b has a slightly smaller diameter than the inner diameter of the cylindrical housing 5, and is provided with a key groove 14c. In addition,
Although not described in detail, the coupling member 14 is made liquid-tight by a shield ring fitted at an end of the coupling member 14 with the rotating shaft 6.

The connecting nozzle member 15 is formed of a round bar member having a smaller diameter than the inner diameter of the cylindrical convex portion 14b of the coupling member 14, and has a second coolant flow through the entire length in the axial direction. A road 25 is provided. Further, the connecting nozzle member 15 has an axial valve drive convex portion 1 at one end portion having a diameter slightly smaller than the inner diameter of the coolant supply port 14a.
5a is integrally protruded, and a reverse screw 15b is formed on the outer periphery of the other end.

A key 20 which engages with a key groove 14c provided in the cylindrical projection 14b of the coupling member 14 is fitted to the outer periphery of the connecting nozzle member 15. As a result, the connecting nozzle member 15 is freely movable in the axial direction with respect to the coupling member 14, and is integrated with the coupling member 14, in other words, the rotating shaft 6 in the rotational direction. The drill head 7 is fixed to the connection nozzle member 15 using a reverse screw provided at the other end.

As shown in FIG. 3, one end 25a of the second coolant channel 25 communicates with the first coolant channel 25 via the valve member 13. In addition, the second coolant passage 25
The other end portion has a small diameter to form the nozzle portion 25b. The nozzle portion 25b has a diameter of 0.2 mm as described above, and injects the coolant supplied from the cooling unit 4 and flowing through the second coolant channel 25 to the drill head 7 as described later. .

The fixing member 16 has a bottomed cylindrical shape having an outer diameter substantially equal to the inner diameter of the cylindrical housing 5, and closes one opening of the cylindrical housing 5 so as to close the inside thereof. Is firmly fixed. The fixing member 16 is provided with a shaft hole at the center thereof so that one end of the connecting nozzle member 15 faces outward. Although not described in detail, the fixing member 16 is made liquid-tight by a shield ring fitted on the outer periphery of the cylindrical projection 14b.

In the rotary drilling apparatus 1 having the automatic valve mechanism configured as described above, the coolant is efficiently supplied to the drill head 7 only while the repair hole is actually drilled in the wall or the like. Is done. The coolant is opened by opening the valve mechanism 22 by operating the switching lever 9.
The coolant is charged into the coolant supply space 21 through the cooling channel 23. The coolant is further filled from the coolant supply space 21 into the first coolant channel 24 of the rotating shaft 6.
As described above, since the first coolant flow path 24 has its opening 24b closed by the valve member 13 urged by the elastic force of the coil spring 19, the coolant is
It is not supplied to the second coolant channel 25 of the connecting nozzle member 15.

In the rotary drill device 1, when the pressure is applied to the drill head 7 in accordance with the drilling operation of the repair hole, the connecting nozzle member 15 is moved as shown by the arrow A in FIG.
The first coolant flow path 24 moves to the right side in the figure.
The connecting nozzle member 15 has its valve driving projection 1
By 5a, the valve member 13 is moved to the right side in the drawing against the elastic force of the coil spring 19. The valve member 13 is
By this moving operation, the opening 24 of the first coolant flow path 24 is formed.
Release the closed state of b. Therefore, the rotary drill device 1 is configured such that the coolant flows from the first coolant flow path 24 to the opening 24b.
And flows into the second coolant channel 25 of the connecting nozzle member 15 through the nozzle portion 25b, and is further injected and supplied to the drill head 7 through the nozzle portion 25b.

The rotary drill device 1 finishes the drilling operation of the repair hole and separates the drill head 7 from the wall surface or the like, whereby the automatic valve mechanism operates and the supply of the coolant is automatically stopped. That is, when the pressing force applied from the drill head 7 via the connection nozzle member 15 is released, the valve member 13 causes the elastic force of the coil spring 19 to move through the first coolant passage 24 in FIG. And return to the left. The valve member 13 closes the opening 24b of the first coolant flow path 24 with its tip to shut off the space between the first coolant flow path 24 and the second coolant flow path 25. As a result, the supply of the coolant to the drill head 7 is stopped.

As described above, the rotary drilling apparatus 1 can operate the drill head 7 independently of the rotating operation of the drill head 7.
By supplying the coolant only when a force in the direction opposite to the drilling direction is applied to the coolant, the coolant is used efficiently. In addition, since the rotary drill device 1 does not use an excessive amount of coolant as described above, contamination of a wall surface, a floor, and the like is minimized.

Since the rotary drill device 1 drills the repair hole while ejecting the coolant from the tip of the drill head 7 as described above, dust or the like generated from the repair hole is in a so-called gelled state. The scattering of dust is suppressed.
Even in such a rotary drill device 1, for example, in the case of an outdoor operation under strong wind, it is difficult to prevent the generated gel-like substance from scattering. Therefore, the rotary drill device 1
Is provided with a dust scattering prevention mechanism for preventing the falling of dust and the like by preventing the gel-like substance from dripping and maintaining the working environment.

The dust scattering prevention mechanism is provided with a drill head 7
And acts to collect the generated gel-like substance to the extent that it drips down along the wall surface or the like. As shown in FIG. 4, the dust scattering prevention mechanism includes a support bracket member 26 provided on the cylindrical housing 5, a guide member 27 having one end portion penetrated by the support bracket member 26, A cover member 28 attached to the other end, the cover member 28 and the support bracket member 26
, And a member such as a coil spring 29 mounted on the guide member 27.

The support bracket member 26 is attached so that one end thereof protrudes from the outer periphery of the cylindrical housing 5 via an attachment member such as a clamp mechanism or a metal belt. A guide hole 26a is provided in parallel. It is needless to say that the support bracket member 26 may be formed by integrally forming a tubular portion on the outer peripheral portion of the tubular housing 5.

The guide member 27 is a support bracket member 2
6 is formed of a rod-shaped member having an outer diameter slightly smaller than the inner diameter of the guide hole 26a, and one end thereof is movably supported in parallel with the drill head 7 by penetrating the guide hole 26a. The guide member 27 is prevented from falling off from the support bracket member 26 by providing the stopper 30 at the penetrating end. This stopper 30
The guide member 2 is positioned so that a cover member 28 described later is positioned on the outer peripheral portion of the drill pit 7b of the drill head 7.
7 is regulated.

The cover member 28 is formed of a synthetic resin material having a mechanical rigidity, a lightweight metal, or the like, and has a substantially cup-like shape. A mounting portion 28a is integrally formed on the outer periphery of the cover member 28, and the center of the base portion is formed. Is provided with a bearing hole 28b. The cover member 28 is suspended and supported by fitting the distal end portion of the guide member 27 to the mounting portion 28a so that the opening 28d is located on the wall surface side where drilling is performed. In this state, the cover member 28
From 8b, the drill head 7 penetrates into the internal space 28c.

The cover member 28 has a bearing hole 28b.
Further, an anti-friction member 31 is fitted in order to reduce frictional resistance with the rotating drill head 7. Further, a ring-shaped attachment 32 made of an elastic material such as rubber is fitted into the opening 28d of the cover member 28. The attachment 32 maintains the adhesion of the cover member 28 to the wall surface and the like, and reduces the generation of vibration noise between the cover member 28 and the wall surface and the like.

The coil spring 29 is mounted in a slightly compressed state between one end of the support bracket member 26 and the mounting portion 28a of the cover member 28. Therefore, the cover member 28 is urged in a direction away from the cylindrical housing 5 by the elastic force of the coil spring 29, and the stopper 30 contacts the one end of the support bracket member 26 as described above. The initial position with respect to the drill head 7 shown in FIG.

The rotary drilling apparatus 1 having the dust scattering prevention mechanism configured as described above operates the power switch 2c to rotate the drill head 7 via the rotary shaft 6 so that the drill head 7 is rotated. Is applied to a drilling position of a repair hole such as a wall surface. In this state, in the rotary drill device 1, the cover member 28 is pressed against the wall surface by the elastic force of the coil spring 28 to cover the periphery of the drill pit 7b, and the attachment 32 is elastically deformed and adheres to the wall surface.

In the rotary drill device 1, when the switching lever 9 is switched from the above-described setting state, the coolant is sprayed and supplied from the tip of the drill pit 7b to the drilling position of the repair hole. When it is strongly pushed to the side, the repair hole is drilled. The rotary drill device 1 is configured to cover the cover member 28 according to the drilling of the repair hole.
Retreats toward the drill body 2 while maintaining the close contact with the wall surface against the elastic force of the coil spring 29.
From the drilled repair hole, the gelled dust is discharged by the action of the injected coolant.

As described above, the rotary drill device 1 includes the cover member 28 that covers the periphery of the drill pit 7b, so that the gel-like dust is sequentially accumulated in the internal space 28c of the cover member 28. The gel dust oozes out of the interior space 28c from between the wall surface and the attachment 32 and flows out along the wall surface. Therefore, in the rotary drill device 1, the exuded gel-like dust adheres to the wall surface, thereby preventing scattering of dust and the like generated from the repair hole drilled even in outdoor repair work. .

FIG. 5 shows another embodiment of the dust scattering prevention mechanism, in which the capacity of the storage space is enlarged in order to minimize the contamination of the wall surface by the gel dust. And In the following description, the same members as those of the dust scattering prevention mechanism of FIG. 4 described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

That is, in the dust scattering prevention mechanism, a bellows 33 is attached between the cylindrical housing 5 and the cover member 28 in order to maintain the capacity of the storage space for storing the gel dust. The bellows 33 has one end fixed to the outer periphery of the cylindrical housing 5 and the other end fixed to the inner surface of the cover member 28 via the bearing hole 28b. Accordingly, the bellows 33 constitutes a gel-like dust storage space 33 a whose internal space communicates with the internal space 28 c of the cover member 28.

According to the dust scattering prevention mechanism configured as described above, the gel dust generated from the repair hole to be drilled is sequentially accumulated in the internal space 28c of the cover member 28. Further, the gel dust is stored in the storage space 33a of the bellows 33 from inside the internal space 28c through the bearing hole 28b.
It flows into and accumulates. Since the rotary drill device 1 has the large storage space for accumulating the gel dust in this way, even when the repair hole is continuously drilled,
The working environment is maintained by preventing dripping of the gel dust.

FIGS. 6 to 14 show an embodiment of an attachment device for a rotary drill device according to the present invention. This attachment device 40 is a device which is detachably attached to a commercially available small rotary drill device 35. It comprises a main body 41 and a coolant supply section 42 for supplying a coolant to the apparatus main body 41. The coolant supplied to the attachment device 40 and the aerosol can 68 filled with the coolant are the same as the coolant and the aerosol can described above, and the details are omitted.

As shown in FIG. 6, in the rotary drill device 35, a mounting flange plate 36a is integrally formed on one side of a housing 36 in which a motor (not shown) is built, and a hand-held portion 36b is formed on the other side. Is provided. The rotary drill device 35 includes a mounting flange plate 36a as described later.
Attachment device 40 is attached via. The rotary drill device 35 includes a power switch 3 on the hand-held portion 36b.
When the power switch 37 is operated, the power is turned on to the motor, and the rotating shaft 38 shown in FIG. 7 is driven to rotate.

One end of the rotating shaft 38 is projected and exposed from the housing 36, and is located inside the cylindrical housing 43 when the attachment device 40 is attached.
The rotating shaft 38 is provided with a chucking mechanism 39 whose details are omitted at the exposed end. Chucking mechanism 3
9 is an opening 4 provided in the cylindrical housing 43 as shown in FIG.
A plurality of chucking levers 39a converge and expand by rotating a chucking key inserted through the opening 43b, and one end of a drive shaft member 44 of the attachment device 40 described later is attached and detached.

The attachment device 40 includes the device body 4
1, a drive shaft member 44, members 46 to 55 including the drive shaft member 44 to form an automatic valve mechanism 45 described below, a nozzle member 56, and a supply pipe member 57. And Also, the attachment device 4
Reference numeral 0 denotes a drill head 58 that is attached to and detached from the apparatus main body 41, a dust scattering prevention mechanism 59 disposed at the tip of the drill head 58 to prevent scattering of dust and the like, A guide mechanism 60 for guiding the scattering prevention mechanism 59 is provided.

The attachment device 40 has a coolant supply space 61 into which coolant is supplied from a coolant supply unit 42 inside the device main body 41, and a first coolant flow opening and closing by an automatic valve mechanism 45. Channel 62 and second coolant channel 63
Are formed. The attachment device 40 has a second inside of the drill head 58, which will be described in detail later.
A third coolant channel 64 that is communicated with the coolant channel 63 is formed.

Further, the attachment device 40 includes a holder casing 6 comprising a housing 66 and a lid member 67.
5, an aerosol can 68 loaded in the holder casing 65, the holder casing 65 and the apparatus main body 4
1 and a harness belt 70
These constitute the coolant supply unit 42.

The cylindrical casing 43 of the apparatus main body 41 is integrally formed of a lightweight metal material or the like, and has an automatic valve mechanism 4 described later.
5 together with the fixed cylindrical member 46 and the outer cylindrical member 51 constitute an external member of the apparatus main body 41. As shown in FIG.
As shown in FIG. 7, the rotating shaft 38 of the rotary drilling device 35 is inserted through the opening 43c on one end side, and an inner peripheral screw made of a reverse screw is formed in the opening on the other end side. Are screwed and fixed. Further, the cylindrical casing 43 has a guide cylindrical member 43d through which a guide shaft member 87 constituting a guide mechanism 60 to be described later is penetrated and supported on the outer peripheral portion.
Are integrally formed. Furthermore, in the cylindrical housing 43,
As shown in FIG. 6, a rotation stop lever 71 is provided on a side surface thereof. The rotation stop lever 71, together with the hand-held portion 36b on the rotary drilling device 35 side, forms a gripping portion for the operator when drilling the repair hole.

The automatic valve mechanism 45 includes the drive shaft member 4 described above.
4 and a fixed cylinder member 46, a pair of oil seals 47A,
47B (hereinafter, generally referred to as an oil seal 47), a pair of ball bearing bearings 48A, 48B (hereinafter, generally referred to as a bearing 48), a valve member 49, a coil spring 50, an outer cylinder member 51, A coupling member 52;
It is composed of a connecting nozzle member 53, and members such as a key 54 and a stopper 55. The automatic valve mechanism 45 supplies the coolant to the drill head 58 described later only while the drilling operation of the repair hole is actually performed, thereby increasing the efficiency of the coolant usage. .

As described above, the drive shaft member 44 has one end 44a at the chucking mechanism 3 of the rotary drill device 35.
The rotary drill device 35 is rotated by turning on the power. As shown in FIG. 8, a large-diameter flange portion 44b is integrally formed on the other end of the drive shaft member 44 so as to protrude therefrom. The drive shaft member 44 has a first coolant passage 62 formed of an axial blind hole therein, and a first coolant passage 6.
2 and an axial fitting hole 44c, the other end of which is open to the flange portion 44b. Drive shaft member 4
4, the inner diameter of the first coolant channel 62 is set to the fitting hole 44c.
The diameter is slightly smaller than the inner diameter of the valve, so that a valve step 44d is formed at the connection portion.

The valve member 49 and the coil spring 50 are incorporated in the coolant passage 62 in the drive shaft member 44 as described in detail later. The drive shaft member 44 includes
One end of the connection nozzle member 53 is fitted inside the fitting hole 44c as described in detail later. Further, the drive shaft member 4
In 4, a coolant flow path 44e is formed to connect between the coolant flow path 62 and the coolant supply space 61 formed in the outer peripheral portion.

The drive shaft member 44 is rotatably supported inside a fixed tubular member 46 via a bearing 48. As described above, the fixed cylindrical member 46 has one end fixed to the cylindrical housing 43 by screwing, and the other end fixed to the outer cylindrical member 51 via an inner peripheral screw, thereby forming an apparatus main body together with these members. 41 constitute the appearance member. A press plate 72 is fitted into the fixed cylindrical member 46 so that the drive shaft member 44 penetrates into one opening, and is located inside the press plate 72 and the flange portion 44b and is axially separated from each other. Bearings 48 are respectively incorporated.

Further, the fixed cylinder member 46 is located inside the bearing 48, and a coolant supply space 61
Are respectively incorporated. Further, as shown in FIG.
A connection hole 4 having an inner peripheral thread into which a supply pipe member 57 described below is screwed so as to communicate with the coolant supply space 61.
6a is provided.

The valve member 49 has a substantially hexagonal cross section whose outer diameter is slightly smaller than the inner diameter of the first coolant passage 62 provided in the drive shaft member 44.
Is incorporated in the coolant passage 62 so as to be movable in the axial direction. In addition, the valve member 49 is configured such that the outer shape thereof forms a space in the axial direction between the outer peripheral portion and the first coolant channel 62, so that the first coolant channel 62 and the second coolant channel are formed. The communication with the coolant passage 64 is enabled. Further, the valve member 49 is integrally formed with a valve projection 49a at the tip end thereof, which can protrude from an opening 52b of the coupling member 52 described later into the shaft hole 52a.

The valve projection 49a is connected to the connecting nozzle member 53.
Is opposed to the valve drive section 53a formed at one end of the valve.
The valve member 49 is biased leftward in FIG. 8 by a coil spring 50 incorporated in the first coolant channel 62 in a slightly compressed state, so that the valve protrusion 49
a through the opening 52a of the coupling member 52,
Coolant channel 62 is closed.

The coupling member 52 includes a drive shaft member 44.
Has an outer diameter dimension substantially equal to the fitting hole 44c provided in the flange portion 44b, and has an overall bottomed cylindrical shape having a shaft hole 52a opened at one end. Although not described in detail, the coupling member 52 is made liquid-tight by a shield ring fitted between an outer peripheral portion thereof and a fitting hole 44c of the drive shaft member 44. The coupling member 52 is
An opening 52b communicating with the above-described first coolant channel 62 is formed at the center of the bottom thereof, and a disk-shaped flange 52c is integrally formed on an outer peripheral portion thereof.

The coupling member 52 is combined with the drive shaft member 44 by abutting the bottom surface of the coupling member 52 with the valve step 44d and the flange 52c with the flange 44b. The coupling member 52 and the drive shaft member 44 are integrated with each other by a set screw 73 provided at a position opposite to the flange portions 52c and 44b and screwed into a screw hole communicating with each other. The coupling member 52 is provided with an axial key groove 52d on the inner wall of the shaft hole 52a. The key groove 52d integrates the connecting nozzle member 53 in the rotational direction and makes the connecting nozzle member 53 freely movable in the axial direction. Combined.

The connecting nozzle member 53 is formed of a round bar member having an outer diameter slightly smaller than the inner diameter of the shaft hole 52a of the coupling member 52. The connecting nozzle member 53 has a valve driving part for moving one end of the connecting nozzle member 53 in the axial direction against the elastic force of the coil spring 50, as will be described later. 53a. Connecting nozzle member 53
Is provided with a second coolant channel 63 throughout the entire length in the axial direction. Also, the connection nozzle member 53
Has one end protruding and exposed from the coupling member 52, and a reverse screw 53b for mounting a drill head 58 described later is formed on the outer peripheral portion of the exposed end.

The connecting nozzle member 53 is rotated relative to the coupling member 52 in the rotational direction as described above by the key 54 fixed to the outer peripheral portion being relatively engaged with the key groove 52d of the coupling member 52. It is integrated and movable in the axial direction. The connecting nozzle member 53 includes a stopper 5 provided with a key 54 on the coupling member 52 side.
5, the range of movement in the axial direction is regulated. The connecting nozzle member 53 has a reverse screw 53b.
The nozzle member 56 is attached to one end side provided with.

As shown in FIG. 8, the nozzle member 56 has a substantially cap shape as a whole, and when the nozzle member 56 is attached to the connecting nozzle member 53, the cooling member communicates with the second coolant channel 63 and has a slightly larger diameter. An agent passage 56a and a small-diameter nozzle hole 56b continuous with the coolant passage 56a are provided therein. The nozzle member 56 supplies the coolant supplied to the third coolant channel 64 of the drill head 58 to the drill head 5 by the action of the nozzle hole 56b as described later.
8 to be supplied.

The supply pipe member 57 is attached to the fixed tubular member 46 by screwing one end of the supply pipe member 57 into the connection hole 46a as described above. As shown in FIG. 6, a hose 69 is connected to the other end of the supply pipe member 57 so as to connect the supply pipe member 57 to a coolant supply unit 42 described later. The supply pipe member 57 is provided with a valve mechanism, though not described in detail, and is supplied from the coolant supply section 42 to the apparatus main body section 41 by rotating the switching lever 74 shown in FIG. Supply / cutoff of the coolant is performed.

Although the supply pipe member 57 is not described in detail, a structure is adopted in which the distal end portion is divided into, for example, two parts and these are integrated by a cylindrical ring member. The supply pipe member 57 is provided with a filter 7 from one side where the ring member is removed and divided.
5 is loaded. The filter 75 is mounted on the distal end side of the supply pipe member 57 as shown in FIG. 8, and removes relatively large foreign matters such as dust mixed in the coolant to block the coolant channels and nozzles in the subsequent stage. To prevent The filter 75 is formed by porous sintering metallurgy. For example, a wire mesh or a nonwoven fabric is used. The filter 75 is activated at an appropriate time.
It is replaced by removing the ring member.

When the switching lever 74 is operated, the coolant is supplied to the apparatus main body 41 having the automatic valve mechanism 45 configured as described above from a coolant supply unit 42 described later. The coolant is supplied into the coolant supply space 61 through the coolant channel. The coolant is further filled from the coolant supply space 61 into the first coolant channel 62 formed inside the drive shaft member 44 via the coolant channel 44e. The coolant is provided in the connecting nozzle member 53 because the first coolant channel 62 has its opening closed by the valve member 49 urged by the elastic force of the coil spring 50 as described above. It is not supplied to the second coolant channel 63.

In the main body 41 of the apparatus, the connecting nozzle member 53 is formed in the coupling member 52 by the reaction force caused by the drill head 58 being pushed into the wall surface in accordance with the drilling operation of the repair hole. It moves inside the agent flow path 63 to the right in FIG. As a result, the connecting nozzle member 53 causes the valve driving portion 53a to abut against the valve convex portion 49a to move the valve member 49 rightward in the drawing against the elastic force of the coil spring 50. The valve member 49 retreats from the opening 52a of the coupling member 52 by this moving operation, and releases the closed state of the second coolant channel 63. Therefore, the attachment device 40 connects the coolant from the first coolant channel 62 provided in the drive shaft member 44 to the connection nozzle member 53 through the opening 52 a of the coupling member 52.
Flows into the second coolant channel 63 formed at the bottom. The coolant is further injected and supplied into a third coolant channel 64 formed in the drill head 7 via the nozzle member 56.

Apparatus main body 41 having automatic valve mechanism 45
After the drilling operation of the repair hole is completed, the drill valve 58 is separated from the wall surface or the like, so that the automatic valve mechanism 45 operates and the supply of the coolant is automatically stopped. That is, the valve member 49
When the pressing force applied from the drill head 58 via the connection nozzle member 53 is released, the first coolant flow path 62 is formed by the elastic force of the coil spring 50.
8 and return to the left side in FIG. Valve member 49
As a result, the valve projection 49a enters the opening 52a of the coupling member 52 to close and shut off the space between the first coolant channel 62 and the second coolant channel 63. Therefore, the automatic valve mechanism 45 automatically stops supplying the coolant to the drill head 58.

As described above, the attachment device 40
Is that the coolant is supplied only when a force is applied to the drill head 58 in a direction opposite to the drilling direction of the repair hole irrespective of the rotating operation of the drill head 58. , Coolant is used efficiently. In addition, since the attachment device 40 does not use an excessive amount of coolant as described above, contamination of a wall surface, a floor, and the like is kept to a minimum.

A drill head 58 is attached to the distal end of the connecting nozzle member 53 in the apparatus main body 41 configured as described above. The drill head 58 is, as shown in FIG.
A drill pit support member 76, a drill pit 77 attached to the tip of the drill pit support member 76,
And a filter 78 loaded inside the drill pit support member 76. Drill pit support member 76
Is formed of a stepped cylindrical member having a base end portion 76a having a slightly larger diameter, and a third coolant flow path 64 is formed in the inside thereof over the entire length in the axial direction.

The drill pit support member 76 has an inner diameter of a base end 76a substantially equal to an outer diameter of a distal end of the connecting nozzle member 53, and has a first inner peripheral screw 76b formed of a reverse screw on the inner peripheral wall. Have been. Drill pit support member 7
6 is attached to the connecting nozzle member 53 by screwing the first inner peripheral screw 76b into the outer peripheral screw 53b. In the drill pit support member 76, a filter loading space 76d is formed at the tip 76c so that the diameter of the third coolant channel 64 is increased. Further, the drill pit supporting member 76 has a second thread formed with a reverse screw on the inner peripheral wall constituting the filter loading space 76d.
Is formed.

The drill pit 77 is attached to the tip of the drill pit support member 76 by the second inner peripheral screw 76e. The drill pit 77 is formed in a cylindrical shape by a sintered alloy in which diamond grains are mixed, and a coolant channel 77a is formed inside the drill pit over the entire length in the axial direction.
In the drill pit 77, a reverse screw that is screwed into the second inner peripheral screw 76 e of the drill pit support member 76 is formed on the outer periphery of the base end. Therefore, drill pit 7
7 is separated from the drill pit support member 76 and is replaced when worn due to the drilling operation. In other words,
In the attachment device 40, only the drill pit 77 can be replaced without replacing the entire drill head 58, and maintenance when the coolant channel 77a is clogged or the like is also facilitated.

The drill pit 77 has the coolant passage 7
The nozzle part 77b is formed by making a part of 7a a small diameter. In the drill pit 77, a coolant injection port 77c is opened at a distal end portion via the nozzle portion 77b. Further, although not described in detail, the drill pit 77 has a tip portion formed on an outer peripheral wall constituting the coolant injection port 77c in order to efficiently discharge cutting powder from the inside of the repair hole to be drilled to the outside. A slit-like groove is formed in the axial direction.

For example, the drill pit 77 is 4.5 mm
When drilling a repair hole of about 8 mm to 8 mm, the inner diameter of the nozzle portion 77b is set to 0.3 mm or less. In the case of drilling a repair hole of about 18 mm to 20 mm in the drill pit 77, the inner diameter of the nozzle portion 77b is set to 0.5 mm. The drill pit 77 injects a coolant with a sufficient ejection pressure from the coolant ejection port 77c.

In the attachment device 40 described above, the nozzle pit 77 of the drill head 58 and the nozzle member 56 attached to the connection nozzle member 53 are provided with the nozzle portion 77b and the nozzle portion 56b, respectively. . However, these nozzles 7
Needless to say, 7b and 56b may be provided on either one.

As described above, the drill head 58 employs a configuration in which the nozzle portion 77b is provided in the drill pit 77 so that the injection pressure of the aerosol can 10 is applied immediately before the nozzle portion 77b. As compared with the case where the member 56 is attached, the loss of the injection pressure in the third coolant channel 64 is reduced. Therefore, the attachment device 40 injects and supplies a coolant at a high pressure from the coolant injection port 77c to the repair hole to be drilled, efficiently cools the drill pit 77, and reliably generates dust from the repair hole. Remove.

The filter 78 is made of porous sintered metallurgy, and is disposed immediately before the nozzle portion 77b having a small diameter to prevent the nozzle portion 77b from being clogged.
As described above, the attachment device 40 also has the filter 50 loaded inside the supply pipe member 57 to remove relatively large dust and the like mixed in the coolant. However, the drive shaft member 44 rotates at a high speed. Fine dust generated from the oil seal 47 and the bearing 48 is removed by the filter 78. Therefore, a filter having a finer size than the filter 50 is used as the filter 78.

The apparatus main body 41 configured as described above is provided with a dust scattering prevention mechanism 59 for preventing dust and the like generated from the repair hole drilled by the drill head 58 from scattering. . This dust scattering prevention mechanism 59
As shown in FIGS. 7, 10, and 11, a cover member 80, a mounting bracket member 81, a discharge guide member 82 for gelled dust, a set screw 83, an attachment 84, and a discharge pipe 85 And the like.

The cover member 80 is made of a highly rigid synthetic resin material or lightweight metal and has a substantially cup-like shape. A bearing hole 80 a is provided on the bottom surface of the cover member 80, and the drill support member 76 forming the drill head 58 is formed. Is penetrated into the internal space 80b. Also, the cover member 80
, An attachment 84 described later is attached to an opening 80c that forms the internal space 80b. Further, the cover member 80 is provided with a dust discharge port 80d on the outer periphery thereof for discharging the gelled dust from the internal space 80b.

The cover member 80 may be provided with an appropriate friction reducing member in the bearing hole 80a in order to reduce the frictional resistance with the drill support member 76 penetrated. . In addition, since it is difficult to confirm the position of the drill head 58 when the cover member 80 is large, it is sufficient that the cover member 80 has at least an internal space 80b sufficient to close the outer peripheral portion of the drill head 58. The cover member 80 is miniaturized by efficiently discharging the gel-like dust generated from the dust discharge port 80d as described later.

As shown in FIG. 10, the dust discharge port 80d is formed on the outer peripheral portion as an inclined hole which is gradually inclined from the opening 80c side of the internal space 80b toward the bottom side. The dust discharge port 80d has an inclination angle of, for example, 45 degrees, and is configured to maintain the inclination angle even when a repair hole is drilled in the ceiling surface. Therefore, the gelled dust and the like flows out of the internal space 80b to the outside by its own weight via the dust outlet 80d. Further, an inner peripheral thread is formed on the inner wall of the dust discharge port 80d, so that a discharge pipe or the like is attached. The discharged dust can be discharged to an arbitrary place by connecting a hose to the discharge pipe, for example.

As shown in FIG. 10, a mounting bracket member 81 is attached to the cover member 80 on the bottom surface thereof.
3 attached. Mounting bracket member 8
1 is a cover member 8 having an upper end portion as shown in FIG.
0 and constitutes a mounting portion 91a. The mounting portion 91a is provided with a guide hole 81b through which one end of a guide member 86 of the guide mechanism 60 described later penetrates.

As shown in FIG. 10, a discharge guide member 82 is attached to the inner space 80b of the cover member 80. The discharge guide member 82 has substantially the same diameter as the internal space 80b of the cover member 80, and is formed as an inclined surface whose surface 82a is gradually inclined downward from above as shown in FIG. The discharge guide member 82 has a surface 82a having an inclination angle of 45 degrees, and is configured to be continuous with the dust discharge port 80d when attached to the cover member 80.
Although the discharge guide member 82 is formed as a separate member from the cover member 80, it is needless to say that the discharge guide member 82 may be formed integrally with the bottom surface of the cover member 80.

As shown in FIG. 10, the cover member 80 has an attachment 84 attached to the opening 80c of the internal space 80b. This attachment 8
Numeral 4 is formed in a ring shape by an elastic material such as rubber to maintain the adhesion of the cover member 80 to a wall surface or the like for drilling the repair hole, and to generate a vibration sound between the cover member 80 and the wall surface or the like. To reduce. The attachment 84 is formed as a separate member from the cover member 80. However, it is a matter of course that the attachment 84 may be formed by molding the cover member 80 with a synthetic resin material and making its opening thin.

The dust scatter prevention mechanism 59 having the above-described structure can be used with the guide mechanism 60 when the repair hole is drilled by the drill pit 77 of the drill head 58.
Thus, the cover member 80 is closely held to a wall surface or the like. As shown in FIG. 7, the guide mechanism 60 includes a guide cylinder 43d formed integrally with the above-described tubular housing 43, a guide shaft member 87 penetrated by the guide cylinder 43d, a coil spring 88, , A stopper cap 89, an end pin 90, a stopper member 91, and a stopper cap 92.

The guide cylindrical portion 43d is formed integrally with the upper surface of the cylindrical housing 43 along the direction of drilling the repair hole, and has a guide hole 43e formed inside the entire length thereof. One end side of the guide cylinder 43d is closed by fitting a stopper member 91 which is retained by a retaining cap 92. In addition, although this guide cylinder part 43d was formed integrally with the cylindrical housing 43, it is needless to say that the guide cylindrical part 43d may be formed as a separate member and attached and fixed to the cylindrical housing 43 by an appropriate coupling member. It is.

The outer diameter of the guide shaft member 87 is slightly smaller than the inner diameter of the guide hole 43e of the guide cylinder 43d, and when the one end is stopped by the end pin 90, the guide hole 43e is closed. Has been inserted. The guide shaft member 87 has a mounting bracket member 8 whose other end constitutes a dust scattering prevention mechanism 59.
It is penetrated by one guide hole 81b and is secured by a retaining cap 89. The guide shaft member 87 has a length dimension that positions the opening 80c of the cover member 80 so as to form substantially the same plane as the drill pit 77 as shown in FIG. have.

The coil spring 88 is mounted between the mounting bracket member 81 and the guide cylinder 43d in a slightly compressed state. The coil spring 88 urges the mounting bracket member 81 in a direction away from the apparatus main body 41 so that the cover member 80 is configured such that the above-described opening 80 c forms substantially the same plane as the drill pit 77. Position.

The guide mechanism 60 constructed as described above
When the drill head 58 is driven to rotate to drill a repair hole in a wall surface or the like as described later, the cover member 80 is pressed against the wall surface by the elastic force of the coil spring 88. The dust scattering prevention mechanism 59 described above causes the attachment 84 to be elastically deformed and adheres to the wall surface, thereby keeping the cover member 80 from scattering dust and reducing the generation of vibration noise.

The guide mechanism 60 adjusts and guides the relative position between the drill head 58 and the cover member 80 in accordance with the drill head 58 that advances into the wall surface as the repair hole is drilled. In other words, the guide mechanism 60 moves in the counter drilling direction along the guide shaft member 87 while the cover member 80 performs the compression operation of the coil spring 88 with the advance of the drill head 58 into the wall surface. The close contact with the wall surface of the cover member 80 is maintained. Therefore, the guide mechanism 60 keeps the above-described cover member 80 from preventing scattering of dust or the like generated from the repaired hole to be drilled or reducing the vibration noise.

In the attachment device 40, a coolant is supplied from a coolant supply unit 42, which will be described later, by switching the switching lever 74 from the setting state. As described above, the coolant is injected from the injection hole 77c of the drill pit 77 into the repair hole only while the repair hole is being drilled by the action of the automatic valve mechanism 45 as described above. In the cover member 80, the dust which has been mixed with the coolant and gelled along with the drilling of the repair hole has an internal space 80.
b. The dust is discharged from the internal space 80b to the outside of the cover member 80 through the dust outlet 80d.

The coolant supply section 42 includes a holder casing 65 including an aerosol can 68 in which the above-described coolant is sealed, a casing body 66 and a lid member 67 for accommodating the aerosol can 68 therein, Hose 69 connected to the supply pipe member 57 of the separated apparatus main body 41
And a member such as a harness belt 70. The aerosol can 68 ejects the coolant from the stem 98 to the outside by the internal ejection pressure when the stem 98 is pushed by the lid member 67 as described later.

The casing main body 66 constituting the holder casing 65 has a bottomed cylindrical shape with an open upper portion and a substantially elliptical cross section, and has an aerosol can storage space 66a formed therein. The casing body 66 is
As shown in FIG. 12, the aerosol can storage space 66a is divided into left and right regions by a partition wall 66e having an outer peripheral wall at a central portion in the width direction protruding inward, and two aerosol cans 68 are arranged in parallel. It can be stored in. The holder casing 65 has an aerosol can storage space 66.
Needless to say, a larger number of aerosol cans 68 may be stored in a.

An upper opening 66 is provided in the casing body 66.
The cover member 67 is rotatably supported by a hinge member b via a hinge mechanism described later. Further, a lock portion 66c is provided on the casing body 66 so as to face the hinge mechanism.
The lid 67 that closes the upper opening 66b is held in a locked state via a lock mechanism 96 described later.

The casing body 66 is integrally formed with a harness mounting portion 66d having a U-shaped cross section on a side surface thereof, and a harness belt 70 shown by a chain line in FIG. 6 is inserted through the harness mounting portion 66d. The aerosol can 68 is
As mentioned above, the weight per one is about 900 g,
Even if the weight of the holder casing 65 is included, it can be sufficiently carried. Therefore, the holder casing 65
The harness belt 70 allows the worker to wear and carry the device directly.

A cushion member 93 is joined to the casing body 66 on the bottom surface thereof.
3 absorbs the impact when the aerosol can 68 is loaded into the aerosol can storage space 66a. When the aerosol can 68 is loaded in the aerosol can storage space 66a, the stem 98 of the aerosol can 68 faces the upper opening 66b of the casing body 66 as shown in FIG.

By the way, after the aerosol can 68 is filled with the cooling agent, the lid portion is caulked. Therefore, the aerosol can 68 generally has a variation of about 1 mm at the height position of the stem 98. The coolant is reliably supplied from the coolant supply section 42 to the apparatus main body 41 by absorbing the variation in the height position of the stem 98 and the variation due to the margin in the aerosol can storage space 66a. Is adopted between the casing main body 66 and the lid member 67.

The lid member 67 is formed as a substantially elliptical cap having an outer dimension sufficient to close the upper opening 66b of the casing body 66. One side of the lid member 67 is rotatably supported by the casing body 66 via a first hinge member 94 and a second hinge member 95 as described later. The lid member 67 has a lock mechanism 96, a connecting member 97, and a pair of stem drive mechanisms 99.
And members such as a bracket member 100 and a pressing portion (universal elbow) 101 for driving the stem driving mechanism 99, and other mechanisms are provided.

That is, as shown in FIG. 13, the bracket member 100 is rotatably combined with the lid member 67 via the second hinge member 95 so as to form an open bottom surface. And this bracket member 10
0 is the casing body 66 via the first hinge member 94.
Are rotatably combined. In other words, the casing body 66 and the lid member 67 are connected to the first hinge member 94.
And the second hinge member 95.

Although not described in detail, the bracket member 100 is formed of a plate-like member extending at least above the two aerosol cans 68 loaded in the aerosol can storage space 66a. The part 100a is a cover member 67
Are formed integrally along the inner surface of the outer peripheral wall. The bracket member 100 includes an aerosol can 68
And a pair of guide holes 1 respectively corresponding to the stems 98.
00b is provided. Also, the bracket member 100
The engaging hole 1 is located on the side facing the fulcrum 100a.
00c is provided.

The first hinge member 94 is assembled to a support shaft 94a supported on the casing main body 66, and one end is fixed to the casing main body 66 with a screw and the other end is fixed to the bracket member 100 with a screw. . First
14, the lid member 67 is rotated at an angle of 90 degrees or more with respect to the casing body 66, and the aerosol can 68 is inserted into the aerosol can storage space 66a. The loading operation is not hindered.

The second hinge member 95 is assembled to a support shaft 95a supported on the inner surface of the lid member 67, and one end is screwed and fixed on a stud integrally formed on the inner surface of the lid member 67, and the other. The end is screwed and fixed to the fulcrum 100a of the bracket member 100. The second hinge member 95 rotates the lid member 67 at a small angle with respect to the bracket member 100.

The lock mechanism 96 includes a first hinge member 94.
A lock bracket piece 96a rotatably supported on the outer surface of the casing body 66 facing the lock member, a lock member 96b made of a wire rotatably assembled to the lock bracket piece 96a, and an outer surface of the lid member 67. And an engaging piece 96c fixed to the engaging member 96c. Lock mechanism 96
13, the lock member 96b is engaged with the engagement piece 96c in a state where the lock bracket piece 96a is rotated counterclockwise in FIG.
By rotating a clockwise, the casing body 66 and the lid member 67 are held in a locked state. Of course,
The lock mechanism 96 is not limited to such a configuration.

The connecting member 97 is connected to the lock mechanism 96 described above.
Is supported on a stud integrally formed on the inner surface of the lid member 67 on the side where the
0 through the engaging hole 100c. Connecting member 9
Reference numeral 7 denotes an engaging portion 97a whose penetrating end is formed in a hook shape. When the lid member 67 is rotated with respect to the casing main body 66, the connecting member 97 is engaged with the inner surface of the bracket member 100 as shown in FIG. 100
Acts so as to rotate integrally with the lid member 67.

The stem drive mechanism 99 is disposed above the two aerosol cans 68 loaded in the aerosol can storage space 66a, respectively.
A bearing bush 103, a first receiving plate member 104,
The first coil spring 105, the second coil spring 106, and the second receiving plate member 107 and other members are included. The valve cylinder member 102 has a slightly longer axis than the depth dimension of the lid member 67, and a coolant channel 102a is provided inside the valve cylinder member 102 over the entire length. Valve cylinder member 1
13, the large-diameter portion 102b, the medium-diameter portion 102c, and the small-diameter portion 102 extend upward from below, as shown in FIG.
d.

The large-diameter portion 102 of the valve cylinder member 102
b protrudes from the bracket member 100 into the aerosol can storage space 66a of the casing body 66 as described later. The large-diameter portion 102b is formed with a large-diameter fitting concave portion 102e that fits on the outer peripheral portion of the guide tube portion that slidably supports the stem 98 of the aerosol can 68. Further, a stem fitting recess 102f having an inner diameter substantially equal to the outer dimension of the stem 98 is formed at the center of the fitting recess 102e in the large diameter portion 102b. These fitting recesses 102e and stem fitting recesses 102f
Is in communication with the coolant channel 102a.

The valve cylinder member 102 has a middle diameter portion 102c supported movably in the axial direction by a bearing bush 103 fitted in the guide hole 100b of the bracket member 100. The large-diameter portion 102b of the valve cylinder member 102 is locked to the lower end of the bearing bush 103 to prevent the valve cylinder member 102 from coming off. Valve cylinder member 10
2, a first receiving plate member 104 is axially fixed and positioned at the upper end of the small diameter portion 102d. A second receiving plate member 107 is mounted on the small-diameter portion 102d so as to be engaged with a step formed between the middle-diameter portion 102c and the small-diameter portion 102d. I have.

The first coil spring 105 has a slightly larger diameter than the outer diameter of the bearing bush 103, and is located between the flange formed on the outer periphery of the bearing bush 103 and the first receiving plate member 104. Then, it is mounted on the valve cylinder member 102 in a slightly compressed state. Also, the second
The diameter of the coil spring 106 is slightly larger than the outer diameter of the small diameter portion 102d, and the first receiving plate member 104 and the second
Is mounted on the valve cylinder member 102 in a slightly compressed state between the receiving cylinder member 102 and the receiving plate member 107. The first coil spring 105 has a relatively small elastic force,
The valve cylinder member 102 is pushed upward through the receiving plate member 104 of FIG. The second coil spring 106 has an elastic force larger than the elastic force of the first coil spring 105, and specifically, the aerosol can 6
8 has enough elastic force to push in the stem 98.

The pressing portion (universal elbow) 101
It is attached to the ceiling surface of the lid member 67. This pressing portion 10
As shown in FIG. 13, an arc-shaped convex portion 10 is provided on the bottom surface thereof.
1a is formed integrally, and a pair of coolant flow paths 101b respectively formed therein are formed therein and communicate with the coolant flow path 102a of the valve cylinder member 102. Pressing part 1
When the cover member 67 is closed with respect to the casing body 66 and held in a locked state by the lock mechanism 96 as described later, the first receiving plate member 104 is pressed to move the valve cylinder member 102. Let it.

Although not described in detail, the pair of coolant flow paths 101b are merged internally and led to a supply pipe member 108 provided on the lid member 67. The supply pipe member 108 has a valve mechanism (not shown) provided therein, and switches the switching lever 109 to supply the coolant to the apparatus main body 41. The attachment device 40
Has been described as a configuration in which the switching lever 109 on the coolant supply section 42 side and the switching lever 74 on the apparatus main body section 41 side are provided as described above. Needless to say, it may be provided on either side of the coolant supply section 42. In addition, since the attachment device 40 includes the automatic valve mechanism 45 described above, it is needless to say that the valve mechanism and the switching lever may not be required.

The stem driving mechanism 9 configured as described above
The coolant supply unit 42 including the valve 9 has the valve cylinder member 102 pushed up by the elastic force of the first coil spring 105. Further, the casing main body 66 and the lid member 67 are connected via the first hinge member 94, the second hinge member 95, and the bracket member 100 as described above. Therefore, when the lid member 67 is closed with respect to the casing main body 66, the stem driving mechanism 99 first closes the bracket member 100 to the casing main body 66 via the first hinge member 94, and the valve cylinder member 102 is positioned above the stem 98 in a horizontal position.

When the lid 67 is closed to the casing main body 66 via the second hinge member 95 slightly later than the operation of the bracket member 100, the stem driving mechanism 99 causes the first receiving portion 101 to press the first receiving portion. Plate member 104
Is pressed. As a result, the stem drive mechanism 99 causes the valve cylinder member 102 to move downward against the elastic force of the first coil spring 105 and the second coil spring 106. In the stem driving mechanism 99, the fitting concave portion 102e of the valve cylinder member 102 fits with the outer peripheral portion of the stem 98. In this case, the stem 98 has a variation in the height position or the lateral position as described above.
By the action of the coil spring 105 described above, it does not abut against the valve cylinder member 102 and smoothly fits into the fitting concave portion 102e.

When the stem 98 and the valve cylinder member 102 are fitted in this manner, the stem receiving mechanism 99 presses the first receiving plate member 1 by the pressing portion 101 of the lid member 67.
04 is pressed. Thus, the first receiving plate member 104 compresses the second coil spring 106 to increase the elastic force. The stem driving mechanism 99 indicates that the elastic force of the second coil spring
The valve cylinder member 102 is pushed down via 2c. The valve cylinder member 102 thereby injects and supplies the coolant from the aerosol can 68 to the coolant channel 102a by pushing the stem 98.

The coolant is supplied from the coolant channel 102a to the apparatus main body 41 via the supply pipe member 108 and the hose 69. The coolant is supplied from the apparatus main body 41 to the drill head 58 and is injected into the inside of the repair hole drilled from the injection hole 77 c of the drill pit 77.

The attachment device 40 is provided with the above-described mechanism and rotatably supports the casing main body 66 and the lid member 67 to drive the stem driving mechanism 99, so that the fulcrum of the valve cylinder member 102 is supported. The valve cylinder member 102 is stably fitted to the stem 98 by a compact mechanism, eliminating the need for a mechanism for lengthening the valve length. Therefore, the attachment device 40
The miniaturization of the coolant supply section 42 has been achieved.

The present invention is not limited to the attachment device 40 of the above-described first embodiment, but is variously developed as in each of the embodiments described below. Further, it is needless to say that each member or each mechanism provided in the attachment device 40 and each embodiment described later can also be adopted in the rotary drill device 1 described above. In the following description of each embodiment, the same or equivalent members and the same or equivalent mechanisms as those of the above-described attachment device 40 will be denoted by the same reference numerals and description thereof will be omitted.

Attachment device 110 shown in FIG.
Is attached to the dust scattering prevention mechanism 59 described above.
To maintain the site environment in a better condition, and to easily perform post-processing. The dust storage bag 111 is formed of a synthetic resin sheet or the like having excellent water resistance, and the cover member 8 is formed.
It is attached to a discharge port 80d provided in the “0”. Therefore,
The gel dust generated due to the drilling of the repair hole flows out from the outlet 80d into the dust storage bag 111 and is accumulated.

Therefore, the attachment device 110
The phenomenon that dust adheres to a wall surface or spills on a floor or the like is minimized, and post-processing is extremely simple. Further, the attachment device 110 can remove the dust storage bag 111 from the cover member 80 and discard the dust storage bag 111 as it is after the operation, thereby greatly improving the operation efficiency.

Further, the attachment device 110 is characterized in that it has a mechanism capable of drilling a repair hole having a fixed depth. That is, the attachment device 110
Is provided in the cylindrical housing 43 and has the guide shaft member 8 therein.
A display section 112b for displaying the amount of movement of the drill head 58 is formed on a guide cylinder section 112 provided with a guide space section 112a that slidably supports the drill 7. Display 1
As shown in FIG. 17, 12b is composed of a long groove provided in a part of the guide cylinder 112 in parallel with the drilling direction, and an index 112c provided along the long groove.

In the attachment device 110, a rod-shaped stopper member 113 is inserted into one end of the guide cylinder 112 from the inside thereof. This stopper member 113
The insertion amount is adjusted with reference to the index 112 c with respect to the guide cylinder 112, and the guide cylinder 112 is fixed with the set screw 114. As described above, in the attachment device 110, the guide shaft member 87 is
Move in. In a state where a repair hole having a predetermined depth is drilled by the drill head 58, the guide shaft member 87 moves when the end pin 90 attached to one end thereof abuts on the distal end portion 113 a of the stopper member 113. Is stopped.

Therefore, the attachment device 110
With the stop operation of the stopper member 113, the movement of the drill head 58 in the drilling direction is also stopped, and the repair hole having a constant depth is drilled. Attachment device 110
In this way, since a repair hole with a certain depth is accurately drilled in this way, for example, when drilling a repair hole in a thin wall, it may break through this wall or a repair hole with a required depth may be drilled. The inconvenience of not being perforated is reliably prevented.

FIG. 18 shows that the heat generated inside the apparatus main body 41 is efficiently discharged by the drive shaft member 44 rotating at a high speed in accordance with the drilling of the repair hole so as to prevent the oil seal 47 from being damaged. It is characterized by having comprised in. That is, in the attachment device 110, a liquid-tight coolant supply space 61 is formed on the outer peripheral portion of the drive shaft member 44 by the pair of oil seals 47. Attachment device 11
0 indicates that if used for a long time, the oil seal 47 formed of rubber or the like will be damaged by the influence of heat generated with the rotation of the drive shaft member 44, causing inconvenience such as leakage of coolant. Sometimes.

For this reason, the attachment device 110 is provided with a heat radiation mechanism for reducing the internal temperature.
The heat radiating mechanism includes a fan 115, an air-conditioning space 117, an air passage 118 provided in the flange 44 b of the drive shaft member 44, and a suction hole 116 provided in the outer cylinder member 51. That is, in the drive shaft member 44, the air-conditioning space 117 is recessed on the inner surface side of the flange portion 44 b, and
There are provided a plurality of air flow paths 118 which penetrate through 4b in the axial direction. Further, the drive shaft member 44 is integrally formed with a plurality of fans 115 on the side surface on the drilling side. On the other hand, the outer cylinder member 51 includes the flange portion 4 of the drive shaft member 44.
A suction hole 116 for communicating the outside with the inside is provided at a portion facing 4b.

When the drive shaft member 44 is driven to rotate in accordance with the drilling of the repair hole, the heat radiating mechanism configured as described above can be used.
The fan 115 is integrated with the drive shaft member 44 in the outer cylinder member 51.
Is rotated, the action of the fan 115 causes an airflow in the drilling direction in the outer cylinder member 51. The heat radiating mechanism causes the outer cylinder member 5 to move from the suction hole 116 by this air flow.
The outside air is sucked into the inside 1 and the sucked air is caused to flow out from the front end opening 51a.

In the attachment device 110, the heat generated in the outer cylinder member 51 with the rotation of the drive shaft member 44 is efficiently released to the outside by the heat radiation mechanism.
Therefore, in the attachment device 110, the internal temperature is prevented from rising, and the function of the oil seal 47 is maintained for a long time. The attachment device 110 does not have a complicated structure or a large number of components due to the heat radiation mechanism.

In the above-described embodiment, the fan 1
Reference numeral 15 shows a configuration formed integrally with the flange portion 44b of the drive shaft member 44, but it is a matter of course that the component 15 may be formed as a separate member. Further, the fan 115 may be provided, for example, on the outer peripheral portion of the coupling member 52.

Further, in the rotary drill device and the attachment device according to each of the embodiments described above, the case where the repair hole for repair is formed in the wall surface, the ceiling, or the like has been described.
Of course, the use is not limited to this.

[0145]

As described above in detail, according to the rotary drilling apparatus according to the present invention, a cooling medium containing a liquid as a base material is supplied from an aerosol can, and this cooling medium is jetted from the tip of a drill head. The drilling is performed while the drilling is being performed, making the entire device very easy to handle due to its small size and light weight, and greatly shortening the drying time and setup time in the hole after drilling, thereby greatly improving work efficiency. As a result, the safety of the worker can be ensured even when working at high places. In addition, the rotary drill device
Extremely inexpensive.

Further, according to the rotary drill device attachment device of the present invention, a cooling medium, which is detachably attached to a commercially available rotary drill device and has a liquid as a base material supplied from an aerosol can, is jetted from the tip of the drill head. While drilling, the size and weight of the entire device make handling extremely easy, and the drying time and setup time in the hole after drilling are shortened, greatly improving work efficiency. In addition, the safety of the worker can be ensured even when working at high places.

[Brief description of the drawings]

FIG. 1 is a main part perspective view showing an embodiment of a rotary drill device according to the present invention.

FIG. 2 is a vertical sectional view of a main part showing details of an internal structure of the rotary drill device.

FIG. 3 is a vertical sectional view of an essential part for explaining a configuration of an automatic valve mechanism provided in the rotary drill device.

FIG. 4 is a partially cutaway main part side view for explaining a configuration of a dust scattering prevention mechanism provided in the rotary drill device.

FIG. 5 is a partially cutaway main part side view for explaining the configuration of another dust scattering prevention mechanism.

FIG. 6 is a perspective view of an essential part showing a first embodiment of an attachment device for a rotary drill device according to the present invention.

FIG. 7 is a partially cutaway side view of the attachment device.

FIG. 8 is a vertical sectional view of an essential part for explaining a configuration of an automatic valve mechanism provided in a device main body of the attachment device.

FIG. 9 is a vertical sectional view of an essential part for explaining a configuration of a drill head attached to a device main body of the attachment device.

FIG. 10 is a longitudinal sectional view illustrating a configuration of a cover member constituting a dust scattering prevention mechanism provided in a device main body of the attachment device.

FIG. 11 is a front view of the cover member.

FIG. 12 is a vertical cross-sectional view of a main part illustrating a configuration of a coolant supply unit provided in the attachment device.

FIG. 13 is a vertical sectional view of an essential part for explaining details of a support structure of a housing and a lid constituting the coolant supply unit.

FIG. 14 is an essential part longitudinal cross sectional view for explaining a state in which a lid is opened with respect to the housing.

FIG. 15 is a perspective view of a principal part showing a second embodiment of the attachment device for a rotary drill device according to the present invention.

FIG. 16 is a side view of a part of the attachment device with a partially cutaway portion.

FIG. 17 is a plan view of an essential part showing a hole depth regulation display mechanism provided in the attachment device.

FIG. 18 is a vertical sectional view of a main part for explaining the configuration of another automatic valve mechanism provided in the attachment device for the rotary drill device according to the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 rotary drilling device, 2 drill body, 3 drills, 4 cooling unit, 5 cylindrical housing (outer cylindrical member), 6 rotating shaft, 7 drill head, 10 aerosol can, 11 holder casing, 13 valve member, 14 Coupling member, 15 connecting nozzle member, 21 coolant supply space,
23 coolant channel (expanded coolant channel) 24 first coolant channel (first coolant channel), 25 second coolant channel (second coolant channel), 26 Support bracket member (support member), 27 guide member, 28 cover member, 29 coil spring (elastic member), 31 anti-friction member, 32 attachment (elastic portion), 35 rotary drill device (drill main body portion), 38 rotary shaft, 39 chucking mechanism, 40 attachment device, 41 device body (drill portion), 42 coolant supply portion (cooling portion),
43 cylindrical housing, 44 drive shaft member (drill support), 4
5 automatic valve mechanism (valve mechanism), 49 valve member, 52
Coupling member, 53 connecting nozzle member, 56 nozzle member, 58 drill head, 59 dust scattering prevention mechanism,
60 guide mechanism, 61 coolant supply empty return, 62 first coolant channel, 63 second coolant channel, 64 third
Coolant passage, 65 holder casing (holder),
66 holder body, 67 lid member, 68 aerosol can, 76 drill support (drill support member), 77 drill pit, 78 filter, 80 cover member, 84
Attachment, 86 discharge guide member, 87 guide shaft member, 88 guide shaft member, 94 first hinge member, 95 second hinge member, 96 lock mechanism, 98
Stem, 99 stem driving mechanism, 100 bracket member, 101 pressing portion, 102 valve cylinder member (nozzle member), 104 first receiving plate (first spring receiving member),
105 a first coil spring (first elastic member);
106 second coil spring (second elastic member),
107 second receiving plate (second spring receiving member), 111
Dust storage bag, 112 guide cylinder, 113 stopper member

Claims (18)

[Claims] 1. A rotary drill device, wherein the inside diameter of a water supply hole of a drill is 0.3 mm or more, and 2.0 kg /
A rotary drill device for performing drilling while supplying a cooling medium containing a liquid having a pressure of not less than cm ² as a base material. 2. A cooling medium which is supported in a bearing cylinder to which a cooling medium is supplied from the outside in a liquid-tight and rotatable manner, has a first cooling medium flow path therein, and a first cooling medium flow path. A rotating shaft provided with a concentric enlarged cooling medium flow path located at one end, and supplied to the first cooling medium flow path by an elastic force of an elastic member mounted in the enlarged diameter cooling medium flow path. A valve member which is urged in the direction of travel of the cooling medium to close the opening end of the enlarged diameter cooling medium flow path, and which is rotatably supported by the outer cylinder and is rotated integrally with the rotation shaft, A drill head is attached to one end exposed from the cylinder and the other end is opposed to the valve member,
A second cooling medium flow passage communicating with the first cooling medium flow passage through the valve member; and a connection nozzle member provided inside the second cooling medium flow passage. A rotary drilling device for moving the first cooling medium flow path and the second cooling medium flow path by moving the valve member toward the rotary shaft side and pushing in the valve member. 3. An outer cylindrical member having a drill head rotatably housed therein, a support member provided on the outer cylindrical member, and the drill having one end side slidably supported by the support member within a predetermined range. A guide member extending substantially parallel to the head, a cover member fixed to the other end of the guide member, penetrating the tip of the drill head, and covering the periphery of the drill pit at the tip; An elastic member which is mounted between the support member and the guide member and urges the cover member toward the distal end side, wherein the cover member is used when the drill pit drills a wall surface or the like. A rotary drilling device that prevents scattering of generated dust and the like. 4. The rotary drilling device according to claim 3, wherein the cover member is provided with an elastic portion elastically contacting a wall surface or the like at an opening on a tip end side thereof. 5. The rotating member according to claim 3, wherein a friction reducing member for reducing frictional resistance is inserted in a shaft hole portion through which the drill head penetrates in the cover member. Drill equipment. 6. A drill body provided with a drive motor and a drill chuck mechanism, a drill head having a cooling medium flow path opened at the tip of the blade formed therein over its entire length, and a drill at one end. A drill support having a head mounted and the other end chucked by the drill chuck mechanism of the driving unit and rotationally driven, and a drill unit including a valve mechanism for opening and closing the cooling medium flow path of the drill head, A cooling medium having an aerosol can filled with injection pressure and sealed therein, and a cooling unit for injecting the cooling medium from the aerosol can into the cooling medium flow path of the drill head through the valve mechanism of the drill unit. A rotary drilling machine configured to drill a wall or the like with a drill head while injecting the cooling medium from the blade tip. 7. The cooling medium according to claim 6, wherein the cooling medium is a mixture of a liquid and a low-boiling organic solvent as a base material, and is sealed in an aerosol can in a liquefied state. Rotary drilling equipment. 8. The drill unit is incorporated in an outer cylinder member, is detachable from the drill body via a mounting part provided on the outer cylinder member, and the cooling unit is The rotary drill device according to claim 6 or 7, comprising a can and a holder which is loaded with the aerosol can and is made portable. 9. A holder body having an aerosol can loading portion formed therein for loading a plurality of aerosol cans in a parallel state, and a ceiling portion of the aerosol can loading portion rotatably supported by the holder body. And a lid member rotatably supported by the bracket member and provided with a cooling medium supply flow passage communicated with the valve mechanism of the drill section. The bracket member and the lid The member has a cylindrical nozzle member slidably provided on the bracket member facing the stem of the aerosol can loaded in the aerosol can loading portion, and the axial position of the nozzle member is regulated by the nozzle member. A first spring receiving member and a second spring receiving member assembled to face each other in a state where the first spring receiving member and the bracket member are interposed between the first spring receiving member and the bracket member. A first elastic member, a second elastic member interposed between the first spring receiving member and the second spring receiving member, and a pressing portion formed on an inner surface of the lid. A stem driving mechanism for pushing a stem of the aerosol can and ejecting a cooling medium to the cooling medium supply flow path, wherein the stem driving mechanism is configured such that the bracket member and the lid member form the aerosol can loading section. In the closed state, after the nozzle member is relatively engaged with the stem of the aerosol can by the elastic force of the first spring receiving member, the pressing portion presses the first spring receiving member, thereby causing the nozzle member to move. The rotary drill device according to any one of claims 6 to 8, wherein a pushing operation of the stem is performed by an elastic force of the biased second elastic member. 10. An attachment device for a rotary drill device which is attached to and detached from a rotary drill device having a drive motor and a drill chuck mechanism, wherein a cooling medium passage opening at a blade tip is formed over the entire length inside. A cylindrical drill head, a drill support member to which the drill head is attached to one end and the other end of which is chucked by a drill chuck mechanism of the rotary drill device and is driven to rotate; and a cooling medium flow path of the drill head A valve mechanism for opening and closing the rotary drilling device, and an outer cylinder member provided with a mounting portion for mounting to the rotary drill device. While injecting the cooling medium injected and supplied into the path from the tip of the blade, drilling of the wall and the like is performed, and the cooling medium Rotary drilling device attachment apparatus characterized in that it is cooled by heat. 11. The cooling medium according to claim 10, wherein a low-boiling organic solvent is mixed with a liquid as a base material, and the cooling medium is injected into the aerosol can under an injection pressure. Attachment device for rotary drilling equipment. 12. The drill head is fixed in a rotational direction to the drill support member and is movably mounted in an axial direction. When the drill head is pressed against a wall surface to be drilled, the drill head moves in an axial direction. 12. The cooling medium is supplied into the cooling medium flow path by opening the valve mechanism via the drill support member.
An attachment device for a rotary drill device according to claim 1. 13. A bit support member having a substantially cylindrical shape, one end of which is attached to and detached from the drill support member.
A drill bit attached to and detached from the tip of the bit support member to form a cutting edge portion. The drill bit has a nozzle portion with a small diameter of a part of a cooling medium flow path penetrating the inside thereof. The attachment device for a rotary drill device according to any one of claims 10 to 12, wherein the attachment device is configured. 14. The attachment device for a rotary drilling device according to claim 13, wherein a filter is mounted on the drill bit at a base end side of the cooling medium flow path divided by a nozzle portion. 15. A guide member having one end supported by the outer cylindrical member in parallel with a moving direction of the drill head for drilling a wall surface and the like, and a drill head fixed to a free end side of the guide member. A head portion including a cylindrical cover member surrounding the blade edge portion and a ring-shaped elastic member fitted into an opening of the cover member; and a head portion located between the head portion and the outer cylindrical member. A dust scattering prevention mechanism comprising an elastic member attached to the guide member and imparting a press-fitting property to a wall or the like to the cover member of the head portion. The attachment device for a rotary drill device according to any one of claims 10 to 14, further comprising a dust outflow portion for causing the gel dust generated by the hole operation to flow out. 16. The attachment device for a rotary drilling device according to claim 15, wherein a bag for storing the gelled dust flowing out is attached to the dust outlet. 17. The outer cylinder member is provided with a guide cylinder portion that guides a base end of the guide member that moves in the direction of movement of the drill head along with a drilling operation. By providing a long groove in the moving direction in which the base end of the guide member faces outward and an indicator along the opening edge of the long groove, the moving amount of the drill head accompanying the drilling operation is displayed. The attachment device for a rotary drill device according to any one of claims 10 to 16, wherein: 18. A stopper member is provided on the outer cylinder member so as to face a base end of the guide member which moves in the direction of movement of the drill head in accordance with a drilling operation, and adjusts the stopper member. The attachment device for a rotary drill device according to any one of claims 10 to 17, wherein the amount of drilling by the drill head is controlled by moving the drill head.