JP7073364B2 - Drilling device - Google Patents

Description

The present invention relates to a perforating device used, for example, for drilling a material.

In the drilling device, a rotary cutting tool for drilling called a diamond core bit, which is a cutting part by attaching diamond particles to the tip of a bottomed cylindrical rotating body, is attached to the output shaft to drill holes in concrete, etc. What is called a diamond core drill used for work is provided. Since such a drilling device has a large diameter of a rotary cutting tool and is used for drilling a hard material, it requires a high output and a long working time to drill one hole. For this reason, this type of drilling device is provided as a stationary type as well as a handheld type.

According to the stationary drilling device, the base of the drilling device is fixed to the work surface such as a wall or floor, so that stable work can be performed within a long working time while receiving a large reaction force from the material. can. Patent Document 1 (German Patent Invention No. 10064173) describes a configuration in which a portable drilling device including a diamond core bit and one battery is attached to a stationary stand. Patent Document 2 (Japanese Unexamined Patent Publication No. 2014-231129) describes a stationary drilling device including a non-diacore drill and one battery, and the base portion is an electromagnet.

Drilling work with a diamond core drill requires a large capacity power supply because it is a work with high output and long working time. Therefore, it cannot be said that one battery is sufficient as a DC power source, and it is desirable to supply power by providing a plurality of batteries or the like. When a plurality of batteries are provided, it is necessary to arrange the battery mounting portion by effectively utilizing the limited space so as not to impair the usability of the user.

An object of the present invention is to enhance the usability of a user by mounting a battery in a well-balanced position or a position that does not interfere with work in a stationary drilling device called a diamond core drill.

The above problems are solved by the following inventions. The first invention comprises a base, a strut extending upward from the base, a vertically movable portion supported by the strut so as to be movable in the vertical direction, a motor provided in the vertically movable portion, and an output shaft driven by the motor. , A stationary drilling device including a battery mounting portion to which a plurality of batteries can be attached and detached as a power source for a motor. In the first invention, a rotary cutting tool is attached to the output shaft as a cutting portion by adhering diamond particles to the tip portion of a bottomed cylindrical rotating body. In the first invention, the battery mounting portion is provided above the motor.

According to the first invention, a plurality of batteries can be mounted by effectively utilizing the empty space above the motor.

A second aspect of the present invention is the perforation device according to the first aspect, wherein the plurality of batteries are moved laterally intersecting the moving direction of the vertically movable portion, attached to the battery mounting portion, and removed.

According to the second invention, the attachment / detachment direction of the plurality of batteries is set to the lateral direction, so that the operability at the time of attachment / detachment is ensured.

According to a third aspect of the present invention, in the first or second invention, the plurality of batteries are mounted side by side on the battery mounting portion, and in this mounted state, the plurality of batteries are the plurality of batteries. It is a perforation device that is installed so that it does not protrude from the edge of the top plate that covers the top.

According to the third invention, by mounting a plurality of batteries side by side, the compactness of the mounted state is ensured, and the top plate portion is prevented from interfering with the batteries. It can function as a guard.

The fourth invention is, in any one of the first to third inventions, a perforation device provided with an operation portion for starting operation on the upper surface of the top plate portion.

According to the fourth invention, the operation unit for the activation operation is arranged on the upper surface of the top plate portion at a position that is easy for the operator to see and reach for operation. This makes it possible to improve the operability of the drilling device.

A fifth invention comprises a base, a support column extending upward from the base, a vertically movable portion supported by the support column so as to be movable in the vertical direction, a motor provided in the vertical movable portion, and an output shaft driven by the motor. , A stationary drilling device provided with a battery mounting portion to which a battery, which is a power source for a motor, can be attached and detached. In the fifth aspect of the invention, a rotary cutting tool is attached to the output shaft as a cutting portion by adhering diamond particles to the tip portion of a bottomed cylindrical rotating body. In the fifth invention, the battery mounting portion is provided on the opposite side of the motor with respect to the support column.

According to the fifth invention, it becomes easy to adjust the weight balance of the vertically movable portion in the direction (front-back direction) in which the motor and the battery mounting portion face each other. As a result, the vertically movable portion can be supported by the support column in a well-balanced manner. Further, according to the fifth invention, it is possible to suppress the scattering of dust generated in the drilling work to the battery mounting portion. Further, according to the fifth invention, by providing the support column between them, the motor and the battery, which are heat generation sources, can be dispersed and the heat exhaust efficiency can be improved.

A sixth aspect of the present invention is the perforated device in which the battery mounting portion is provided in the vertically movable portion in the fifth invention.

According to the sixth invention, the wiring between the battery and the motor can be shortened (simplification of the wiring path).

A seventh aspect of the invention is the perforated device provided with a battery cover in the battery mounting portion in the fifth or sixth aspect of the invention.

According to the seventh invention, the battery can be waterproofed or dustproofed by the battery cover in the drilling work by the diamond core bit, which uses water and generates a lot of dust.

The eighth invention is the perforated device in which the battery mounting portion is provided so as to be repositionable with respect to the vertically movable portion in any one of the fifth to seventh inventions.

According to the eighth invention, it is possible to select from which direction the battery is attached to and detached from the battery mounting portion. As a result, for example, when the handle for moving the vertically movable part can be replaced on either the left or right side of the vertically movable part, the position of the battery mounting part is changed so that the handle does not get in the way of the battery. It is possible to ensure the operability of attaching and detaching the battery.

A ninth aspect of the invention is the battery mounting of the battery mounting portion in any one of the fifth to eighth inventions, which is a side portion of the vertically movable portion and along the side portion opposite to the motor with respect to the support column. It is a drilling device with a set surface.

According to the ninth invention, the motor is arranged on one side of the vertically movable portion and the battery mounting portion is arranged on the other side, so that the perforation device can be made compact.

A tenth aspect of the present invention includes a base, a strut extending upward from the base, a vertically movable portion supported by the strut so as to be movable in the vertical direction, a motor provided in the vertically movable portion, and an output shaft driven by the motor. , A stationary drilling device provided with a battery mounting portion to which a battery, which is a power source for a motor, can be attached and detached. In the tenth invention, a rotary cutting tool is attached to the output shaft as a cutting portion by adhering diamond particles to the tip portion of a bottomed cylindrical rotating body. In the tenth invention, the battery mounting portion is provided between the column and the motor.

According to the tenth invention, the battery mounting portion can be arranged by effectively utilizing the space between the support column and the motor, whereby the perforation device can be made compact.

The eleventh invention is the perforated device to which a plurality of batteries can be attached in any one of the fifth to tenth inventions.

According to the eleventh invention, sufficient electric power can be supplied for work with high output and long working time.

A twelfth invention comprises a base, a support column extending upward from the base, a vertically movable portion supported by the support column so as to be movable in the vertical direction, a motor provided in the vertical movable portion, and an output shaft driven by the motor. , A stationary drilling device provided with a battery mounting portion to which a battery, which is a power source for a motor, can be attached and detached. In the twelfth invention, a rotary cutting tool is attached to the output shaft as a cutting portion by adhering diamond particles to the tip portion of a bottomed cylindrical rotating body. In the twelfth invention, a battery mounting portion is provided on the side portion of the motor.

According to the twelfth invention, the battery mounting portion can be arranged compactly by effectively utilizing the space on the side portion of the motor.

A thirteenth invention comprises a base, a strut extending upward from the base, a vertically movable portion movably supported by the strut in the vertical direction, a motor provided in the vertically movable portion, and an output shaft driven by the motor. , A stationary drilling device provided with a battery mounting portion to which a battery, which is a power source for a motor, can be attached and detached. In the thirteenth invention, a rotary cutting tool is attached to the output shaft as a cutting portion by adhering diamond particles to the tip portion of a bottomed cylindrical rotating body. In the thirteenth invention, the motor includes a cooling fan, and the rotation of the cooling fan generates a flow of cooling air for cooling the motor. In the thirteenth invention, a controller including a control board for performing various controls is arranged on the windward side of the motor with respect to the flow of the cooling air.

According to the thirteenth invention, in addition to cooling the motor, the controller is efficiently cooled. For example, when a brushless motor is used as a motor, it is possible to efficiently cool the controller, which becomes relatively large as a result of incorporating a control board for controlling the operation thereof. The thirteenth invention can be applied not only to a controller for controlling the operation of a motor but also to a controller including a control board for performing various controls such as generation of an alarm sound and lighting of lighting.

It is an overall side view of the drilling device which concerns on 1st Embodiment. It is an overall plan view of the drilling apparatus which concerns on 1st Embodiment. It is an overall front view of the drilling device which concerns on 1st Embodiment. It is a figure which looked at the battery mounting part which concerns on 1st Embodiment from the front side. This figure shows a state in which the battery is removed from the battery mounting portion. It is the whole perspective view of the battery alone. It is an overall side view of the drilling device which concerns on 2nd Embodiment. It is an overall plan view of the drilling device which concerns on 2nd Embodiment. It is the whole front view of the drilling device which concerns on 2nd Embodiment. It is an overall side view of the drilling device which concerns on 3rd Embodiment. It is an overall plan view of the drilling device which concerns on 3rd Embodiment. It is the whole front view of the drilling device which concerns on 3rd Embodiment. It is an overall side view of the drilling device which concerns on 4th Embodiment. It is an overall plan view of the drilling device which concerns on 4th Embodiment. It is an overall front view of the drilling device which concerns on 4th Embodiment. It is the whole side view which saw the perforation device which concerns on 5th Embodiment from the right side. It is an overall plan view of the drilling apparatus which concerns on 5th Embodiment. It is the whole rear view of the perforation device which concerns on 5th Embodiment. It is the whole side view which saw the perforation device which concerns on 6th Embodiment from the right side. It is the whole plan view of the drilling apparatus which concerns on 6th Embodiment. It is the whole rear view of the drilling device which concerns on 6th Embodiment. It is the whole side view which saw the perforation device which concerns on 7th Embodiment from the right side. It is an overall plan view of the drilling device which concerns on 7th Embodiment. It is the whole rear view of the perforation device which concerns on 7th Embodiment. 8 is an overall side view of the drilling device according to the eighth embodiment as viewed from the right side. It is an overall plan view of the drilling apparatus which concerns on 8th Embodiment. It is a top view of the battery mounting part of the drilling device which concerns on 8th Embodiment. This figure shows a state in which the battery cover is opened and the battery is removed from the battery mounting portion. It is the whole rear view of the perforation device which concerns on 8th Embodiment. 9 is an overall side view of the drilling device according to the ninth embodiment as viewed from the right side. This figure shows a state in which the battery mounting portion is rotated so that the battery attachment / detachment operation side is on the right side. It is the whole plan view of the drilling apparatus which concerns on 9th Embodiment. This figure shows a state in which the battery mounting portion is rotated so that the battery attachment / detachment operation side is on the right side. It is the whole rear view of the drilling device which concerns on 9th Embodiment. This figure shows a state in which the battery mounting portion is rotated so that the battery attachment / detachment operation side is on the right side. 9 is an overall side view of the drilling device according to the ninth embodiment as viewed from the right side. This figure shows a state in which the battery mounting portion is rotated so that the battery attachment / detachment operation side is on the left side. It is the whole plan view of the drilling apparatus which concerns on 9th Embodiment. This figure shows a state in which the battery mounting portion is rotated so that the battery attachment / detachment operation side is on the left side. It is the whole rear view of the drilling device which concerns on 9th Embodiment. This figure shows a state in which the battery mounting portion is rotated so that the battery attachment / detachment operation side is on the left side. It is the whole side view which saw the perforation device which concerns on 10th Embodiment from the right side. It is an overall plan view of the drilling device which concerns on 10th Embodiment. It is the whole rear view of the perforation device which concerns on the tenth embodiment. 11 is an overall side view of the drilling device according to the eleventh embodiment as viewed from the right side. It is the whole plan view of the perforation device which concerns on 11th Embodiment. It is the whole rear view of the perforation device which concerns on eleventh embodiment. It is the whole side view which saw the perforation device which concerns on 12th Embodiment from the right side. It is the whole plan view of the perforation device which concerns on 12th Embodiment. It is the whole rear view of the perforation device which concerns on 12th Embodiment.

Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 42. First, the configuration common to the first to twelfth embodiments will be described based on the first embodiment. As shown in FIGS. 1 to 3, the stationary drilling device 101 exemplified in the first embodiment has a base 2 that can be fixed to an installation surface F such as a workbench or a floor surface, and a support column that extends upward from the base 2. 3, a vertically movable part 4 supported by a support column 3 so as to be movable in the vertical direction, a motor 10 as a drive source, an output shaft 13 driven by the motor 10, and a battery 30 which is a power source of the motor 10 can be attached and detached. The battery mounting portion 20 is provided. The rotary cutting tool 15 attached to the output shaft 13 has diamond particles attached to the tip of a bottomed cylindrical rotating body to form a cutting portion, and a diamond core bit is usually used. A normal user operates the drilling device 101 by being located on the front side (left side in FIG. 1) of the drilling device 101. In the following explanation, the user is used as a reference for the up, down, front, back, left, and right directions.

The base 2 is made of metal and is provided as a flat plate-shaped pedestal, and a bolt hole 2a penetrating in the plate thickness direction (vertical direction) is provided in a substantially central portion thereof. By striking an anchor bolt against an installation surface F such as a wall or a floor through a bolt hole 2a and tightening the anchor bolt with a nut, the base 2 can be fixed to the installation surface F. Further, a plurality of level adjusting screw holes 2b extending in the vertical direction are provided at the four corners of the base 2. The base 2 can be made horizontal with respect to the installation surface F by attaching the level adjusting screw to the level adjusting screw hole 2b so as to project downward and adjusting the protruding length thereof.

The column 3 has a columnar shape extending straight upward from the base 2. A rod-shaped rack gear 3a extending in the vertical direction along the support column 3 is provided on the rear surface of the support column 3. A pinion gear 5c, which will be described later, is meshed with the rack gear 3a.

The vertically movable portion 4 is composed of a movable support portion 5 that is movably supported in the vertical direction with respect to the support column 3, and a motor support portion 6 that extends horizontally from the lower front portion of the movable support portion 5 toward the front. There is. A column through hole 5a extending in the vertical direction is provided at a substantially central portion of the movable support portion 5. The strut through hole 5a has a size and shape that allows the strut 3 to penetrate, and is provided so that the vertically movable portion 4 can move relative to the strut 3 in the vertical direction. Inside the movable support portion 5, a pinion gear 5c is rotatably supported via a pinion rotation shaft 5b. The pinion gear 5c is fixed to the pinion rotation shaft 5b and rotates integrally. The pinion gear 5c is meshed with the rack gear 3a. As shown in FIG. 2, both sides of the pinion rotation shaft 5b project laterally from the side portion of the movable support portion 5, respectively. 1 to 3 show a state in which the T-shaped handle 7 is attached to the protruding portion on the left side. The handle 7 can be replaced with a protruding portion on the right side.

The handle 7 has a T-shape having a shaft portion 7a and an arm portion 7b extending radially outward from the shaft portion 7a. By rotating the handle 7, the pinion gear 5c is rotated to change the meshing position with respect to the rack gear 3a, so that the movable support portion 5 can be moved up and down. By moving the movable support portion 5 up and down, the rotary cutting tool 15 can be moved up and down to approach and separate from the workpiece W. Further, the user can apply a large downward pushing force (perforation force) to the rotary cutting tool 15 by grasping and rotating the arm portion 7b of the handle 7.

A drive unit 8 is mounted on the upper surface of the motor support unit 6. The drive unit 8 includes a U-shaped drive unit case 9 when viewed from the side. The motor 10 is built in the bottom portion 9a of the drive unit case 9. As the motor 10, a small, high-output brushless motor is used. The motor 10 is a thin motor that is compact in the motor axial direction because it is a brushless motor, and is compactly housed in the bottom portion 9a where the space in the height direction is limited.

A controller 12 for controlling the operation of the motor 10 is built in the vertical portion 9b of the drive unit case 9. The controller 12 is a rectangular flat plate-shaped control board housed in a case with a shallow rectangular bottom and resin-molded. ing. The output of the motor 10 is decelerated via a reduction gear train (not visible in the figure) built in the motor support portion 6 and transmitted to the output shaft 13. The extending direction of the output shaft 13 is along the moving direction of the vertically movable portion 4. The output shaft 13 is rotatably supported by the motor support portion 6.

The rotary cutting tool 15 fixed to the output shaft 13 has a cylindrical shape extending straight downward along the axial direction of the output shaft 13 and the moving direction of the vertically movable portion 4. The rotation center of the rotary cutting tool 15 coincides with the axis center of the output shaft 13. The lower end of the rotary cutting tool 15 is a cutting portion 15a to which diamond particles are attached. A processing material W to be drilled is fixed below the rotary cutting tool 15. By pressing the cutting portion 15a of the rotary cutting tool 15 rotated by the motor 10 against the upper surface of the machined material W by the rotation operation of the handle 7, the machined material W is drilled.

Power is supplied to the motor 10 by using two batteries 30 as a power source. The two batteries 30 are attached to the battery mounting portion 20, respectively. In the case of the first embodiment, the battery mounting portion 20 is provided above the motor 10 and in front of the vertical portion 9b of the drive unit case 9.

Details of the battery mounting portion 20 are shown in FIG. 4, and details of the battery 30 are shown in FIG. As shown in FIG. 4, in the case of the first embodiment, the two battery mounting portions 20 are provided vertically arranged vertically. The upper and lower battery mounting portions 20 have the same configuration as each other, and are arranged sideways to mount and remove the batteries 30 by moving them in the left-right direction (horizontal direction). The battery mounting portion 20 includes a pair of upper and lower rail portions 20a. Positive and negative power supply terminals 20b and 20c are provided along the inside of the upper and lower rail portions 20a. The rail portion 20a and the positive and negative power supply terminals 20b and 20c extend long in the left-right direction, which is the attachment / detachment direction (slide direction) of the battery 30, respectively. On the right side of the power supply terminals 20b and 20c, a lock recess 20d to which the lock claw portion 30e of the battery 30 described later is engaged is provided.

As shown in FIG. 5, the battery 30 has a plurality of battery cells housed in a battery case having a rectangular shape of approximately hexahedron, and is also used as a power source for other rechargeable electric tools such as screw tightening tools. A high-performance 18V output lithium-ion battery is used. The motor 10 is started by using the total voltage of the two batteries 30 as a power source of 36V. A pair of rail receiving portions 30a that engage with the rail portions 20a are provided on the illustrated upper surface (mounting surface) of the battery 30. Inside the pair of rail receiving portions 30a, positive and negative connection terminals 30b and 30c to which positive and negative power supply terminals 20b and 20c are connected are provided. Between the positive and negative connection terminals 30b and 30c, a signal connection connector 30d for transmitting and receiving various control signals and the like to and from the charger when the battery 30 is attached to the charger omitted in the figure is provided. Has been done. In the following description, especially in the figure, in order to clarify the orientation (posture) of the battery 30, the upper surface (mounting surface) of the battery 30 is marked with the sign "30U", and the lower surface is marked with the sign "30D". Identify the bottom surface. Further, a code "30F" is attached to the side surface (mounting front surface) of the battery 30 on the front side in the mounting direction with respect to the battery mounting portion 20, and a code "30R" is attached to the side surface (mounting rear surface) on the rear surface in the mounting direction. Identify the front and back surfaces.

The lock claw portion 30e described above is provided on the upper surface (mounting surface 30U) of the battery 30. The lock claw portion 30e is spring-urged to the side protruding upward. In FIG. 4, the battery 30 can be attached to the battery mounting portion 20 by sliding it in the mounting direction (leftward in FIG. 4) as shown by the white arrow in the figure. When the battery 30 is attached to the battery mounting portion 20 and the lock claw portion 30e is engaged with the lock recess 20d, the battery 30 is locked to the battery mounting portion 20 in the mounted state.

Although not visible in FIG. 5, an unlock button 30f is provided on the mounting front surface 30F at the lower side of the lock claw portion 30e in the drawing. In FIG. 1, the unlock button 30f is shown. When the lock release button 30f is pushed down with a fingertip against the force of the spring, the lock claw portion 30e retracts in the retracting direction, the mounting lock state of the battery 30 with respect to the battery mounting portion 20 is released, and the battery 30 is mounted on the battery. It becomes removable from the part 20. The battery 30 can be removed from the battery mounting portion 20 by sliding it in the removal direction (to the right in FIG. 4) indicated by the white arrow in FIG. The battery 30 can be repeatedly used as a power source by removing it from the battery mounting portion 20 and charging it with a charger prepared separately.

As shown in FIG. 1, a cooling fan 16 is attached to the output shaft of the motor 10. A top plate portion 9c that projects horizontally is provided above the vertical portion 9b of the drive unit case 9. The top plate portion 9c projects to the left from the vertical portion 9b like the bottom portion 9a. The inside of the drive case portion 9, the bottom portion 9a, the vertical portion 9b, and the inside of the top plate portion 9c communicate with each other. A plurality of intake ports 9d are provided on the left side portion of the top plate portion 9c. A plurality of exhaust ports 9e are provided on the left side of the bottom portion 9a. When the motor 10 is started and the cooling fan 16 is rotated, outside air is introduced into the drive unit case 9 via the intake port 9d. The introduced outside air flows downward through the vertical portion 9b as shown by the white arrow in FIG. 1, and is then exhausted to the outside through the exhaust port 9e of the bottom portion 9a. The rotation of the cooling fan 16 generates a flow of motor cooling air from the upper part to the lower part of the drive unit case 9. The motor 10 and the controller 12 are cooled by the flow of the motor cooling air indicated by the white arrows in FIG. 1.

As shown in FIG. 2, an operation unit 17 including switches such as a start switch is provided on the upper surface of the top plate portion 9c of the drive unit case 9. As shown in the figure, the operation unit 17 is provided with a start switch 17a, a load status display unit 17b, and a battery remaining capacity display unit 17c. When the start switch 17a is turned on, the motor 10 is activated and the rotary cutting tool 15 is rotated. The load status display unit 17b displays the load status of the motor 10, and the battery remaining capacity display unit 17c displays the remaining capacity of the battery 30. The operation unit 17 may be configured to have a battery changeover switch. By pressing and operating the battery changeover switch, the battery used can be switched to one (18V output) or two (36V output).

When viewed in a plane, the two batteries 30 are attached so as not to protrude laterally from the top plate portion 9c. Further, the two batteries 30 are attached to the bottom portion 9a and the vertical portion 9b of the drive unit case 9 so as not to protrude. For this reason, the top plate portion 9c and thus the drive portion case 9 function as a guard for preventing other members from interfering with the battery 30.

According to the drilling device 101 of the first embodiment described above, the two batteries 30 are arranged by effectively utilizing the empty space above the motor 10 secured by the brushless motor. There is.

Further, according to the perforation device 101 of the first embodiment, outside air is introduced from the upper part of the drive unit case 9 having a U-shape in the side view, so that both the motor 10 and the controller 12 are efficiently cooled.

6 to 8 show the drilling device 102 of the second embodiment. The perforating device 102 according to the second embodiment is different from the perforating device 101 of the first embodiment in that the orientation of the drive unit case 9 is reversed in the front-rear direction. Since other configurations are the same as those of the first embodiment, the description thereof will be omitted by using the same reference numerals.

In the second embodiment, the drive unit case 9 having a U-shaped side view is arranged in a direction in which the bottom portion 9a and the top plate portion 9c are respectively projected rearward from the vertical portion 9b. A motor 10 which is a brushless motor is housed in the bottom portion 9a. A controller 12 for controlling the operation of the motor 10 is housed in the vertical portion 9b in a vertical posture in which the longitudinal direction thereof is along the vertical direction.

A battery mounting portion 20 is provided on the rear surface of the vertical portion 9b of the driving unit case 9 to mount two batteries 30 having an output voltage of 18V. The two batteries 30 are mounted vertically side by side. The two batteries 30 can be attached and detached by sliding them in the left-right direction as in the first embodiment. The motor 10 is started by using the total electric power (output voltage 36V) of the two batteries 30 as a power source.

A plurality of intake ports 9d are provided on the rear surface of the top plate portion 9c, and a plurality of exhaust ports 9e are provided on the rear surface of the bottom portion 9a. When the cooling fan 16 rotates by starting the motor 10, outside air is introduced from the intake port 9d. The introduced outside air flows downward through the vertical portion 9b to cool the motor 10 and the controller 12. The motor cooling air is exhausted from the exhaust port 9e.

As shown in FIG. 7, an operation unit 17 is provided on the upper surface of the top plate portion 9c as in the first embodiment. Further, as shown by the white arrows in FIG. 6, outside air is introduced from a plurality of intake ports provided on the rear surface of the top plate portion 9c. The outside air (cooling air) introduced into the drive unit case 9 flows downward to cool the motor 10 and the controller 12. The introduced cooling air is exhausted from a plurality of exhaust ports provided on the rear surface of the bottom portion 9a.

Even with the drilling device 102 of the second embodiment, the two batteries 30 effectively utilize the empty space above that is secured by using the brushless motor compacted in the vertical direction (motor axial direction) as the motor 10. Can be placed. Further, as in the first embodiment, the outside air is introduced into the drive unit case 9, and the motor 10 and the controller 12 are efficiently cooled.

9 to 11 show the drilling device 103 according to the third embodiment. The drive unit 8 of the third embodiment includes a drive unit case 25 different from the drive unit cases 9 of the first and second embodiments. The drive unit case 25 according to the third embodiment has a substantially box shape having a low height. The drive unit case 25 is installed on the upper surface of the motor support unit 6 as in the first and second embodiments. The motor 10 and the controller 12 are housed in the drive unit case 25. A cooling fan 16 is attached to the output shaft of the motor 10. The output of the motor 10 is output to the output shaft 13 via the reduction gear train built in the motor support portion 6. As shown in FIG. 9, the controller 12 is housed on the upper side of the motor 10 in a horizontal posture in which the surface direction thereof is along the horizontal direction (horizontal direction).

Two battery mounting portions 20 are provided on the upper surface of the drive portion case 25. Unlike the first and second embodiments, the two battery mounting portions 20 are arranged side by side in a plane in the front-rear direction. In the third embodiment, the two batteries 30 are attached with their lower surface 30D facing upward. As shown by the white arrow in FIG. 10, the battery 30 can be attached by sliding it to the left with respect to the battery mounting portion 20, and the battery 30 can be removed by sliding it from the battery mounting portion 20 to the right. be able to.

An intake port 25a is provided on the upper side of the front surface of the drive unit case 25, and an exhaust port 25b is provided on the lower side. When the motor 10 is started and the cooling fan 16 is rotated, outside air is introduced into the drive unit case 25 from the upper intake port 25a. The introduced outside air flows downward to cool the motor 10 and the controller 12. The cooling air flowing downward is exhausted from the lower exhaust port 25b. In FIG. 9, the flow of cooling air is indicated by a white arrow.

A start switch 27 is provided on the front surface of the drive unit case 25. When the start switch 27 is turned on, the motor 10 is started, and when it is turned off, the motor 10 is stopped. Further, although omitted in the figure, a load status display unit and a battery remaining capacity display unit are provided on the front surface of the drive unit case 25 in addition to the start switch 27. For this reason, the front surface of the drive unit case 25 also has a function as an operation panel unit.

According to the drilling device 103 according to the third embodiment, by providing the brushless motor compacted in the vertical direction (motor axial direction) as the motor 10, the space above the motor 10 is secured and the two batteries are provided. 30 can be arranged. Moreover, since the two batteries 30 are arranged side by side in the front-rear direction and arranged in a plane, the drive unit 8 can be made compact in the height direction, and by extension, the drilling device 103 can be made compact in the height direction. Is being planned.

12 to 14 show the drilling device 104 of the fourth embodiment. In the fourth embodiment, the configuration of the drive unit 8 other than the drive unit case 26 is the same as that of the first to third embodiments, and thus the description thereof will be omitted using the same sign.

The drive unit 8 of the fourth embodiment is installed on the upper surface of the motor support unit 6. The drive unit 8 includes a drive unit case 26. The drive unit case 26 includes a base portion 26a corresponding to the drive portion case 25 of the third embodiment and a pedestal portion 26b extending upward from the center of the upper surface of the base portion 26a. One battery mounting portion 20 is provided on each of the left and right side surfaces of the pedestal portion 26b.

As shown by the white arrows in FIG. 14, the battery 30 can be attached by sliding downward toward both battery mounting portions 20, and the battery 30 can be removed by sliding upward from the battery mounting portion 20. In the fourth embodiment, the two batteries 30 are mounted in a vertical posture with their respective mounting surfaces 30U facing each other and their longitudinal directions along the vertical direction. The total power (rated voltage 36V) of these two batteries 30 is supplied to the motor 10.

The motor 10 and the controller 12 are housed in the base portion 26a of the drive portion case 26. A cooling fan 16 is attached to the output shaft of the motor 10. As for the output of the motor 10, the reduction gear train built in the motor support portion 6 is output to the output shaft 13. The controller 12 is arranged above the motor 10. The controller 12 having a rectangular flat plate shape is arranged in a horizontal posture in which the surface direction thereof is positioned in the horizontal direction (horizontal direction).

In the case of the fourth embodiment, a plurality of intake ports 26c are provided on the upper side of the front surface of the base portion 26a, and a plurality of exhaust ports 26d on the lower side of the front surface are provided. When the cooling fan 16 is rotated by starting the motor 10, outside air is introduced from the upper intake port 26c. The outside air introduced into the base portion 26a flows downward to cool the motor 10 and the controller 12. The cooling air is exhausted from the lower exhaust port 26d. In FIG. 12, the flow of cooling air is indicated by a white arrow. A start switch 27 is arranged on the front surface of the base portion 26a. Further, although omitted in the drawing, a load status display unit and a battery remaining capacity display unit are provided on the front surface of the base unit 26a in addition to the start switch 27. For this reason, the front surface of the base portion 26a also has a function as an operation panel portion.

Also in the drilling device 104 of the fourth embodiment, the two batteries 30 are arranged by effectively utilizing the empty space above that is secured by using the brushless motor compacted in the motor axial direction as the motor 10. Can be done. Further, according to the drilling device 104 of the fourth embodiment, since the two batteries 30 and the battery mounting portion 20 are arranged at positions shifted rearward with respect to the axis of the rotary cutting tool 15, the cutting portion 15a is viewed from above. The visibility is improved, which makes it possible to improve the workability of the drilling device 104.

In the first to fourth embodiments described above, the motor 10 and the controller 12 are housed in the drive unit cases 9, 25, 26, and the battery mounting unit 20 is arranged in the drive unit cases 9, 25, 26 above the motor 10 and the controller 12. The drive unit 8 is configured, and the drive unit 8 is mounted on the upper surface of the motor support unit 6 to illustrate the configuration. In the fifth to ninth embodiments described below, the drive unit case is omitted, and the battery 30 is arranged so as to be separated from the support column 3 on the side opposite to the motor 10. The controller 12 is arranged adjacent to the motor 10.

Subsequently, the configurations different in the fifth to ninth embodiments will be described for each embodiment. In the fifth to ninth embodiments, in the upper part of the motor support portion 6, instead of the drive portion case 9, a motor case 11 containing the motor 10 and a control board for controlling the operation of the motor 10 are housed. It is equipped with a controller 12. As the motor 10, a small, high-output brushless motor is used. By using the brushless motor, it is easy to control the rotation speed according to the load by the control board or the like housed in the controller 12. Below the motor case 11, an output shaft 13 extending downward from the lower surface of the motor support portion 6 is provided. The extending direction of the output shaft 13, which is the same as that of the first to fourth embodiments, is along the moving direction (vertical direction) of the vertically movable portion 4. The output shaft 13 is rotatably supported by the motor support portion 6. The output of the motor 10 is transmitted to the output shaft 13 via meshing of a reduction gear train provided inside the motor support portion 6.

As shown in FIGS. 15 to 17, in the fifth embodiment, the battery mounting portion 20 is provided on the rear surface of the movable support portion 5. Similar to the first and second embodiments, in the fifth embodiment, the two battery mounting portions 20 are provided side by side in the vertical direction and sideways with the sliding direction for mounting and dismounting in the horizontal direction. .. As shown by the white arrows in FIG. 17, the battery 30 can be mounted by sliding the mounting surface 30U from the right to the left with respect to the battery mounting portion 20 in a sideways posture with the mounting surface 30U facing forward. Further, the battery 30 can be removed by sliding the battery 30 from the left to the right with respect to the battery mounting portion 20. In the fifth embodiment, the handle 7 is attached to the left side of the movable support portion 5. Therefore, by setting the removal direction of the battery 30 to the right with respect to the movable support portion 5 (opposite to the handle 7) as described above, the handle 7 does not get in the way when the battery 30 is attached or detached. It has become.

According to the perforating device 1 of the fifth embodiment described above, the motor 10 and the battery mounting portion 20 are arranged on opposite sides of each other in the front-rear direction with the support column 3 interposed therebetween in the vertically movable portion 4. As a result, the weight balance between the load of the vertically movable portion 4 on the front side of the column 3 and the load of the vertically movable portion 4 on the rear side of the column 3 is appropriately maintained, and the vertically movable portion 4 is supported by the column 3 in a well-balanced manner. Can be made to. Further, according to the drilling device 1, by arranging the battery 30 and the motor 10 in the vertically movable portion 4, the wiring between the battery 30 and the motor 10 is shortened, and the wiring route is simplified. Can be planned. Further, according to the drilling device 1, the battery mounting portion 20 and the rotary cutting tool 15 are separated from each other with the support column 3 in between, so that dust generated during the drilling work is suppressed from being scattered to the battery mounting portion 20. Can be done. Further, according to the perforation device 1, by arranging the columns 3 in between, the motor 10 which is a heat generation source and the battery 30 can be separated from each other, and the heat exhaust efficiency of each can be improved. Further, according to the drilling device 1, the battery mounting portions 20 are provided at two locations, and two batteries 30 can be mounted and used, so that the power is sufficient for high output and long working time work using the rotary cutting tool 15 of the diamond core bit. Can be supplied. Further, as shown in FIG. 5, the battery 30 has a substantially rectangular parallelepiped shape in which the length between the mounting surface 30U and the lower surface 30D is shorter than the length between the mounting front surface 30F and the mounting rear surface 30R. There is. As a result, according to the drilling device 1, the battery 30 is mounted on the battery mounting portion 20 with the length between the mounting surface 30U and the lower surface 30D in the front-rear direction, so that the machine length in the front-rear direction of the drilling device 1 can be made compact. can do.

18 to 20 show the drilling device 40 of the sixth embodiment. As shown in FIGS. 18 to 20, in the sixth embodiment, the battery mounting portion 20 is provided on the protruding portion 5e extending rearward from the rear portion of the movable support portion 5. The protruding portion 5e has a flat plate shape with the plate thickness direction in the vertical direction. In the sixth embodiment, the two battery mounting portions 20 are provided on the upper surface of the protruding portion 5e on one side and on the lower surface of the protruding portion 5e on the other side. As shown by the white arrow in FIG. 18, the battery 30 attached to the battery mounting portion 20 on the upper surface side of the protruding portion 5e is rearward with respect to the battery mounting portion 20 in a downward posture with the mounting surface 30U facing downward. It can be attached by sliding it forward from. Further, the battery 30 attached to the battery mounting portion 20 on the lower surface side of the protruding portion 5e is mounted by sliding the mounting surface 30U upward with respect to the battery mounting portion 20 from the rear to the front. .. The battery 30 mounted on the upper surface side and the battery 30 mounted on the lower surface side can be removed by sliding the battery 30 from the front to the rear with respect to the battery mounting portion 20, respectively.

According to the perforation device 40 of the sixth embodiment described above, the motor 10 and the battery mounting portion 20 are arranged on opposite sides of each other in the front-rear direction with the support column 3 interposed therebetween in the vertically movable portion 4. As a result, the weight balance between the load of the vertically movable portion 4 on the front side of the column 3 and the load of the vertically movable portion 4 on the rear side of the column 3 is appropriately maintained, and the vertically movable portion 4 is supported by the column 3 in a well-balanced manner. Can be made to. Further, according to the drilling device 40 of the sixth embodiment, the wiring between the battery 30 and the motor 10 is shortened by arranging the battery 30 and the motor 10 in the vertically movable portion 4 as in the fifth embodiment. In addition, it is possible to simplify the wiring route. Further, according to the drilling device 40, the battery mounting portion 20 and the rotary cutting tool 15 are separated from each other with the support column 3 in between, so that dust generated during the drilling work is suppressed from being scattered to the battery mounting portion 20. Can be done. Further, according to the perforation device 40, by arranging the columns 3 in between, the motor 10 which is a heat generation source and the battery 30 can be separated from each other, and the heat exhaust efficiency of each can be improved. Further, according to the drilling device 40, the battery mounting portions 20 are provided at two locations, and the two batteries 30 can be mounted and used, so that the power is sufficient for high output and long working time work using the rotary cutting tool 15 of the diamond core bit. Can be supplied.

21 to 23 show the drilling device 50 of the seventh embodiment. As shown in FIGS. 21 to 23, in the seventh embodiment, the battery mounting portion 20 is provided on the rear surface of the movable support portion 5, as in the fifth embodiment. Further, in the seventh embodiment, the two battery mounting portions 20 are provided side by side in the vertical direction as in the fifth embodiment, but the sliding direction in which the battery 30 is mounted and removed is set in the vertical direction. It is different from the fifth embodiment in that. The same members or configurations as those of the fifth and sixth embodiments will be omitted by using the same sign.

Moreover, in the seventh embodiment, the upper battery mounting portion 20 and the lower battery mounting portion 20 have slide directions of attachment and detachment opposite to each other. As shown by the white arrow in FIG. 21, the battery 30 attached to the upper battery mounting portion 20 is slid from above to downward with respect to the battery mounting portion 20 in a forward posture with the mounting surface 30U facing forward. It can be attached by. On the contrary, the battery 30 attached to the upper battery mounting portion 20 can be removed by sliding it upward from the battery mounting portion 20. The battery 30 attached to the lower battery mounting portion 20 is slid from the lower side to the upper side of the battery mounting portion 20 in a forward posture with the mounting surface 30U also facing forward, thereby causing the lower battery mounting portion 20. Can be attached to 20. On the contrary, the battery 30 attached to the lower battery mounting portion 20 can be slid downward and removed from the lower battery mounting portion 20.

According to the perforating device 50 of the seventh embodiment described above, the motor 10 and the battery mounting portion 20 are arranged on opposite sides of each other in the front-rear direction with the support column 3 interposed therebetween in the vertically movable portion 4. As a result, the weight balance between the load of the vertically movable portion 4 on the front side of the column 3 and the load of the vertically movable portion 4 on the rear side of the column 3 is appropriately maintained, and the vertically movable portion 4 is supported by the column 3 in a well-balanced manner. Can be made to. Further, according to the drilling device 50, by arranging the battery 30 and the motor 10 in the vertically movable portion 4, the wiring between the battery 30 and the motor 10 is shortened, and the wiring route is simplified. Can be planned. Further, according to the drilling device 50, the battery mounting portion 20 and the rotary cutting tool 15 are separated from each other with the support column 3 in between, so that dust generated during the drilling work is suppressed from being scattered to the battery mounting portion 20. Can be done. Further, according to the perforation device 50, by arranging the columns 3 in between, the motor 10 which is a heat generation source and the battery 30 can be separated from each other, and the heat exhaust efficiency of each can be improved. Further, according to the drilling device 50, the battery mounting portions 20 are provided at two locations, and the batteries 30 can be mounted and used, so that the power is sufficient for high output and long working time work using the rotary cutting tool 15 of the diamond core bit. Can be supplied. Further, as shown in FIG. 5, the battery 30 has a substantially rectangular parallelepiped shape in which the length between the mounting surface 30U and the lower surface 30D is shorter than the length between the mounting front surface 30F and the mounting rear surface 30R. There is. As a result, according to the drilling device 50, the battery 30 is mounted on the battery mounting portion 20 with the length between the mounting surface 30U and the lower surface 30D in the front-rear direction, so that the machine length in the front-rear direction of the drilling device 50 can be made compact. can do.

24 to 27 show the drilling device 60 of the eighth embodiment. As shown in FIGS. 24 to 27, in the eighth embodiment, the arrangement of the battery mounting portion 20, the mounting direction, and the removing direction of the battery 30 are the same as those in the fifth embodiment. At the rear of the movable support portion 5 of the drilling device 60, a battery cover 21 is provided to cover the two battery mounting portions 20 and the two batteries 30 in a state where the battery 30 is mounted. The battery cover 21 includes a housing portion 21a and a door portion 21b. The accommodating portion 21a has a box shape in which the side (right side) for performing the attachment / detachment operation of the battery 30 is the open side. The door portion 21b is connected to the open side of the accommodating portion 21a by a hinge 21d and is provided so as to be openable and closable. A portion in which the accommodating portion 21a and the door portion 21b are connected by a hinge 21d is provided on the rear surface side of the battery cover 21. The battery 30 can be attached to and detached from the battery mounting portion 20 when the door portion 21b is open. As shown in FIG. 26, the door portion 21b is provided with a lock claw 21c on the side opposite to the hinge 21d portion (front side of the battery cover 21). The lock claw 21c is provided so as to engage with the accommodating portion 21a when the door portion 21b is closed, and the battery cover 21 covers the battery mounting portion 20 and the battery 30 due to the elastic holding of the lock claw 21c. Locked in the state. The opening portion of the accommodating portion 21a and the door portion 21b have a sealing structure in which the mating portions are closely adhered to each other so as to prevent water from entering the inside of the accommodating portion 21a with the door portion 21b closed. ..

According to the drilling device 60 of the eighth embodiment described above, the battery cover 21 can reliably waterproof and dust-proof the battery 30 in the drilling work by the diamond core bit, which uses water and generates a lot of dust. Further, the drilling device 60 has the same arrangement of the battery mounting portion 20, the mounting direction of the battery 30, and the removing direction as in the drilling device 1 of the fifth embodiment. As a result, the perforation device 60 also has the same effect as that of the perforation device 1.

28 to 33 show the drilling device 70 of the ninth embodiment. As shown in FIGS. 28 to 33, in the ninth embodiment, the two battery mounting portions 20 are provided at the rear portion of the movable support portion 5 via the rotation shaft 5d provided at the center of the front surface thereof. The two battery mounting portions 20 are arranged side by side in a horizontal posture with the sliding direction for mounting and removing the battery 30 in the left-right direction. The battery mounting portion 20 is supported in a state of being rotatable (reversible left and right) within a range of approximately 180 ° around the axis of the rotating shaft 5d. The rotational position of the battery mounting portion 20 is held by the urging force of the plunger (not shown). The battery mounting portion 20 can change the attachment / detachment direction of the battery 30 by rotating (reversing left / right) integrally with the rotating shaft 5d. 28 to 30 show a state in which the attachment / detachment operation side of the battery 30 faces the right side of the drilling device 1. When the battery mounting portion 20 is fixed in the posture shown in FIG. 30, the battery 30 has the mounting surface 30U facing forward as shown by the white arrow in FIG. 30 with respect to the battery mounting portion 20. It can be attached by sliding it from the right to the left, and it can be removed by sliding it from the left to the right with respect to the battery mounting portion 20. In FIGS. 28 to 30, the handle 7 is attached to the left side of the movable support portion 5 so as not to interfere with the attachment / detachment operation of the battery 30. In FIGS. 31 to 33, the battery mounting portion 20 is rotated (reversed left and right) around the rotation shaft 5d to change the rotation position in accordance with the replacement of the handle 7 on the right side of the movable support portion 5. This indicates a state in which the attachment / detachment operation side of the battery 30 faces the left side of the drilling device 1. When the battery mounting portion 20 is fixed in the posture shown in FIG. 33, the battery 30 is slid from the left to the right with respect to the battery mounting portion 20 as shown by the white arrows in FIG. 33. It can be attached and can be removed by sliding it from right to left with respect to the battery mounting portion 20. In FIGS. 31 to 33, the handle 7 is attached to the right side of the movable support portion 5 and is arranged so as not to interfere with the attachment / detachment operation of the battery 30.

According to the perforation device 70 of the ninth embodiment described above, the battery mounting portion 20 is supported on the rear surface of the movable support portion 5 in a state where it can rotate via the rotation shaft 5d. This makes it possible to change the mounting direction and the removing direction of the battery 30. Therefore, for example, by rotating the battery mounting portion 20 to change the mounting direction and the removing direction of the battery 30 in accordance with changing the position of the handle 7 to the left or right, the handle 7 can be prevented from getting in the way. This makes it possible to ensure the operability of attaching and detaching the battery 30. Further, the drilling device 70 is similar to the drilling device 1 of the fifth embodiment in that the two battery mounting portions 20 are vertically arranged vertically and the battery 30 is mounted and removed in the left-right direction. There is. As a result, the perforation device 70 has the same effect as that of the perforation device 1.

34 to 36 show the perforation device 80 of the tenth embodiment. As shown in FIGS. 34 to 36, in the tenth embodiment, the controller 12 accommodating the control board and the like is arranged above the motor 10. In the tenth embodiment, the battery mounting portion 20 is provided in an open space on the front side of the movable support portion 5 and on the rear side of the motor 10 in the front-rear direction. The two battery mounting portions 20 are provided side by side along the rear surface of the motor case 11 in the vertical direction, and the sliding direction for mounting and dismounting is the horizontal direction. In the tenth embodiment, the mounting direction and the removing direction of the battery 30 are the same as those in the fifth embodiment. That is, as shown by the white arrows in FIG. 36, the battery 30 can be mounted by sliding the mounting surface 30U from the right to the left with respect to the battery mounting portion 20 in a sideways posture with the mounting surface 30U facing forward. can. Further, the battery 30 can be removed by sliding the battery 30 from the left to the right with respect to the battery mounting portion 20.

According to the perforation device 80 of the tenth embodiment described above, by arranging the controller 12 above the motor 10, the motor 10 and the movable support portion 5 are located above the motor support portion 6 in the front-rear direction. There is an empty space between them. By arranging the battery 30 in this empty space, the length of the vertically movable portion 4 including the battery 30 in the front-rear direction can be made compact. Further, according to the drilling device 80, by arranging the battery 30 and the motor 10 in the vertically movable portion 4, the wiring between the battery 30 and the motor 10 is shortened, and the wiring route is simplified. Can be planned. Further, according to the drilling device 80, the battery mounting portions 20 are provided at two locations, and the batteries 30 can be mounted and used, so that the power is sufficient for high output and long working time work using the rotary cutting tool 15 of the diamond core bit. Can be supplied. Further, as shown in FIG. 5, the battery 30 has a substantially rectangular parallelepiped shape in which the length between the mounting surface 30U and the lower surface 30D is shorter than the length between the mounting front surface 30F and the mounting rear surface 30R. There is. As a result, according to the drilling device 80, the battery 30 is mounted on the battery mounting portion 20 with the length between the mounting surface 30U and the lower surface 30D in the front-rear direction, so that the machine length in the front-rear direction of the drilling device 80 can be made compact. can do.

37 to 39 show the drilling device 90 of the eleventh embodiment. As shown in FIGS. 37 to 39, in the eleventh embodiment, one battery mounting portion 20 is provided on each of the left and right side portions of the motor case 11 in which the motor 10 is housed. As shown by the white arrows in FIG. 39, the battery 30 can be mounted by sliding the mounting surface 30U from above to the battery mounting portion 20 with the mounting surfaces 30U facing the motor 10 side. Further, the battery 30 can be removed by sliding it from the lower side to the upper side with respect to the battery mounting portion 20. The controller 12 is adjacent to the rear side of the motor 10.

According to the perforation device 90 of the eleventh embodiment, the weight balance of the vertically movable portion 4 in the left-right direction can be adjusted by attaching two batteries 30 to the left and right side portions of the motor case 11 one by one. Further, according to the drilling device 90, the battery mounting portion 20 can be compactly arranged around the motor case 11 by effectively utilizing the space on the left and right sides of the motor case 11. Further, according to the drilling device 90, by arranging the battery 30 and the motor 10 in the vertically movable portion 4, the wiring between the battery 30 and the motor 10 is shortened, and the wiring route is simplified. Can be planned. Further, according to the drilling device 90, the battery mounting portions 20 are provided at two locations, and the batteries 30 can be mounted and used, so that the power is sufficient for high output and long working time work using the rotary cutting tool 15 of the diamond core bit. Can be supplied.

40 to 42 show the perforation device 100 of the twelfth embodiment. As shown in FIGS. 40 to 42, in the twelfth embodiment, the two battery mounting portions 20 are provided side by side on the rear surface of the battery mounting base 2c provided at the rear portion of the base 2. As shown by the white arrow in FIG. 42, the battery 30 can be mounted by sliding the mounting surface 30U from above to the battery mounting portion 20 with the mounting surface 30U facing forward. Further, the battery 30 can be removed by sliding it from the lower side to the upper side with respect to the battery mounting portion 20. In the twelfth embodiment, the battery mounting portion 20 is arranged at a position where the battery mounting portion 20 and the battery 30 do not interfere with the functions of the bolt holes 2a and the level adjusting screw holes 2b.

According to the perforating device 100 of the twelfth embodiment, the motor 10 (and the rotary cutting tool 15) and the battery mounting portion 20 are arranged on opposite sides of each other in the front-rear direction with the support column 3 interposed therebetween. This makes it possible to improve the balance of the load in the front-rear direction of the drilling device 100. Further, according to the perforating device 100 of the twelfth embodiment, since the battery mounting portion 20 is arranged near the installation surface F, the perforating device 100 accompanying the cutting of the rotary cutting tool 15 by the weight of the battery mounting portion 20 and the battery 30. Vibration can be suppressed. Further, according to the drilling device 100, the battery mounting portion 20 and the rotary cutting tool 15 are separated from each other with the support column 3 in between, so that dust generated during the drilling work is suppressed from being scattered to the battery mounting portion 20. Can be done. Further, according to the perforation device 100, by arranging the columns 3 in between, the motor 10 which is a heat generation source and the battery 30 can be separated from each other, and the heat exhaust efficiency of each can be improved. Further, according to the drilling device 100, the battery mounting portions 20 are provided at two locations, and the batteries 30 can be mounted and used, so that the power is sufficient for high output and long working time work using the rotary cutting tool 15 of the diamond core bit. Can be supplied. Further, as shown in FIG. 5, the battery 30 has a substantially rectangular parallelepiped shape in which the length between the mounting surface 30U and the lower surface 30D is shorter than the length between the mounting front surface 30F and the mounting rear surface 30R. There is. As a result, according to the drilling device 100, the battery 30 is attached to the battery mounting portion 20 with the length between the mounting surface 30U and the lower surface 30D in the front-rear direction, so that the front and rear of the base 2 including the battery mounting base 2c can be attached. The length in the direction can be made compact.

Various modifications can be made to the perforating devices 101, 102, 103, 104 of the first to fourth embodiments or the perforating devices 1 to 100 of the fifth to twelfth embodiments described above. For example, each embodiment may be combined as appropriate. In each embodiment, two batteries 30 are attached, but three or more batteries may be attached. Although the configuration in which an 18V output lithium ion battery is used as the battery 30 is exemplified, the configuration may be such that the output of the battery 30 or the like is appropriately changed. The electrical connection between the plurality of batteries 30 may be in an appropriate form according to the specifications of the product. For example, when four 18V batteries are provided by combining two embodiments, two batteries of the same embodiment are connected in series, and the two sets connected in series are connected in parallel, so that the length is 36V. You can get the output of time. An example of a configuration in which a brushless motor is used for the motor 10 is illustrated, but the size is high enough to be installed in the drive unit case 9, or to be provided in the vertically movable portion 4, the battery mounting base 2c, etc., and it is easy to control. If it is a motor, a different type of motor may be used. The configuration of the battery cover 21 is not limited to the configuration exemplified in the eighth embodiment as long as the cover shape is such that the battery 30 and the battery mounting portion 20 are waterproof and dustproof.

Further, as the drilling devices 101 to 104 (1,40,50,60,70,80,90,100), a diamond core drill to which a diamond core bit (rotary cutting tool 15) is attached is exemplified, but a drill bit is attached as a rotating cutting tool. For the drilling device, the illustrated battery mounting structure can be applied.

Claims (7)

The base, a support column extending upward from the base, a vertically movable portion movably supported by the support column in the vertical direction, a motor provided in the vertical movable portion, an output shaft driven by the motor, and the above. It is a stationary drilling device equipped with a battery mounting part that allows multiple batteries to be attached and detached as a power source for the motor.
A rotary cutting tool is attached to the output shaft as a cutting portion by adhering diamond particles to the tip of a bottomed cylindrical rotating body.
The battery mounting portion is provided above the motor.
The plurality of batteries are mounted side by side on the battery mounting portion, and in the mounted state, the plurality of batteries do not protrude from the edge of the top plate portion that covers the upper part of the plurality of batteries. A drilling device that is configured to be attached to . The base, a support column extending upward from the base, a vertically movable portion movably supported by the support column in the vertical direction, a motor provided in the vertical movable portion, an output shaft driven by the motor, and the above. It is a stationary drilling device equipped with a battery mounting part that allows multiple batteries to be attached and detached as a power source for the motor.
A rotary cutting tool is attached to the output shaft as a cutting portion by adhering diamond particles to the tip of a bottomed cylindrical rotating body.
The battery mounting portion is provided above the motor.
It has a top plate portion that covers the upper part of the plurality of batteries mounted on the battery mounting portion.
A drilling device provided with an operation unit for starting operation on the upper surface of the top plate portion . The battery mounting portion according to claim 1 or 2 , wherein the plurality of batteries are moved laterally intersecting the moving direction of the vertically movable portion to be mounted on and removed from the battery mounting portion. Drilling device. The base, a support column extending upward from the base, a vertically movable portion movably supported by the support column in the vertical direction, a motor provided in the vertical movable portion, an output shaft driven by the motor, and the above. It is a stationary drilling device equipped with a battery mounting part that allows multiple batteries to be attached and detached as a power source for the motor.
A rotary cutting tool is attached to the output shaft as a cutting portion by adhering diamond particles to the tip of a bottomed cylindrical rotating body.
The battery mounting portion is provided on the vertically movable portion on the opposite side of the motor to the support column.
The plurality of batteries are vertically attached to the battery mounting portion side by side, and are moved laterally intersecting the moving direction of the vertically movable portion to be attached to and removed from the battery mounting portion. Device. The drilling device according to any one of claims 1 to 4 .
A drilling device provided with a battery cover in the battery mounting portion. The drilling device according to any one of claims 1 to 5 .
The battery mounting portion is a perforating device provided so that the position of the battery mounting portion can be changed with respect to the vertically movable portion. The drilling device according to any one of claims 1 to 6.
The motor includes a cooling fan, and the rotation of the cooling fan generates a flow of cooling air for cooling the motor, and a control board for various controls is generated on the wind side of the motor for the flow of the cooling air. A drilling device with a controller in place.

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