JP5750189B1 - Eyebreaking device - Google Patents

Abstract

A roughening device capable of forming a plurality of roughenings having a predetermined depth extending from the surface of a structure toward the inside by a single operation. In the roughening device 10A, the front end portions 54 of the roughening bits 13 are exposed forward from the front end opening 32 surrounded by the front end edges of the first to fourth side walls 16, 17, 19 of the housing 11. As the drive shaft 47 of the electric drill 12 rotates, the roughening bit 13 rotates along with the driven shaft 51. In the roughening device 10 </ b> A, the roughening bit 13 is pressed against the surface of the structure together with the housing 11, and the structural member is cut from the surface toward the inside by the roughening bit 13, so that the structure can be operated in one operation. A plurality of eyes are formed. [Selection] Figure 4

Description

  The present invention relates to a roughening device for forming a roughening of a predetermined depth extending from the surface of a structure toward the inside.

  The drive motor, a disc-shaped drill bit that cuts and roughens the wall surface of the drilled hole attached to the output shaft of the drive motor, and the drive motor is disposed between the drive motor and the roughening bit. A posture holding member that holds the posture, a moving means that is mounted on the drive motor side and moves the drive motor relative to the posture holding member in the radial direction of the hole, and a remote control means for the drive motor and the moving means. A hole wall roughening device is disclosed (see Patent Document 1). In this roughening device, since the roughing bit that is rotated by the drive motor is attached to the output shaft of the motor, the roughing bit is also moved in the radial direction of the hole by moving the motor in the radial direction of the hole by the moving means. It moves, and the wall surface of a hole is cut | disconnected in a ring shape and groove shape with a roughening bit, and a roughening is formed in a wall surface.

JP 2007-255061 A

  The roughening device disclosed in Patent Document 1 can cut a wall surface of a hole that has been drilled using a roughening bit to form a roughening surface on the wall surface. Can not form a troll. In addition, this roughening device cuts the wall surface with a rotating disc-shaped roughening bit, and has a means for generating a cutting sound with an unpleasant and high sound pressure level during the cutting of the wall surface, thereby reducing the cutting sound. This may cause noise pollution around the surrounding area.

  An object of the present invention is to provide a roughening device capable of forming a plurality of roughenings of a predetermined depth extending from the surface of a structure toward the inside by one operation. Another object of the present invention is to reduce the sound pressure level of unpleasant and loud cutting noise that occurs during the formation of roughening, and to form multiple roughenings in the structure in a quiet state with reduced cutting noise. An object of the present invention is to provide a roughening device that can do this.

  The premise of the present invention for solving the above-mentioned problem is a roughening device that forms a roughening of a predetermined depth extending from the surface of the structure toward the inside.

A first aspect of the present invention in the premise is roughening device, which has a first to fourth side walls extending from the first and second support walls and first and second support wall arranged in the front-rear direction forward A housing having a connecting wall extending rearward from the upper end portions of the first and second support walls, and a fixed seat attached to the rear end portion of the connecting wall; a first and second support walls; and a first frame surrounded by the side walls The first support wall having a first space, a second support wall positioned in front of the first space, a second space surrounded by the side walls, and a drive shaft rotatably supported by the support walls. An electric drill disposed rearward and having a tip portion removably fixed to a fixed seat, and a plurality of roughening bits extending to the first and second spaces having a driven shaft rotatably supported by the support walls And installed in the first space to be rotatable And transmission means for transmitting the rotation of the drive shaft of the electric drill to the driven shaft of the roughening bits, and in the roughening device, the front ends of the roughening bits are forwardly forwarded from the front end opening surrounded by the front end edges of the side walls. there was exposed, while rotating them th vandalism bit with the driven shaft with the rotation of the drive shaft of the electric drill, certain structures by their eyes roughening bit to cut toward the inside from the surface.

The second feature of the present invention based on the above premise is that the roughening device has first and second support walls arranged in the front-rear direction and first to fourth side walls extending forward from the first and second support walls. A first space surrounded by the first and second support walls and the side walls; a second space positioned in front of the first space and surrounded by the side walls; and a front end of the side walls A bellows member which is attached to the edge and can be expanded and contracted in the front-rear direction, an electric drill having a drive shaft rotatably supported by these support walls and disposed behind the first support wall, and rotating to these support walls A plurality of roughening bits having a driven shaft that is supported and extending in the first and second spaces, and a rotation of the driving shaft of the electric drill that is rotatably installed in the first space to drive the roughing bits. A transmission means to transmit to the shaft A vacuum means for sucking air from the second space, and in the roughening device, the bellows member is brought into contact with the surface of the structure, and the vacuum is sucked from the second space by the vacuum means and the second space is set to a negative pressure. When this occurs, the bellows member contracts in the front-rear direction, the tip of the roughening bit is exposed forward from the bellows member, and the roughening bit rotates with the driven shaft as the drive shaft of the electric drill rotates. The structure is to cut the structure from the surface to the inside by using a roughening bit .

As an example of the present invention having the second feature , the housing includes a connecting wall extending rearward from the upper end portions of the first and second support walls, and a distal end portion of the electric drill attached to the rear end portion of the connecting wall. And a fixed seat that is detachably fixed.

As another example of the present invention having the second feature , the bellows member is attached to the front end edge of the side wall, and is stretched and bellows folded in the front-rear direction, and is connected to the front end edge of the stretchable part. A contact portion having a predetermined area that contacts the surface of the first and second members, and the stretchable portion and the contact portion surround the front end opening surrounded by the front end edges of the first to fourth side walls.

As another example of the present invention having the second feature , the vacuum means is connected to any one of the first to fourth side walls and a suction hose disposed outside the housing and connected to the suction hose. The suction device has an air volume in the range of 1.5 to 4.5 m ³ / min, and a suction power of the suction device in the range of 150 to 400 W.

As another example of the present invention having the second feature described above, in the roughing device, the suction device is operated simultaneously with the operation of the electric drill, or 0.3 to 1.5 seconds have elapsed since the operation of the electric drill. Later, the suction device is operated, and the operation of the electric drill is stopped at the same time as the operation of the electric drill is stopped.

As another example of the present invention having the second feature , the roughening device has an air supply valve mechanism for supplying air to the second space, and in the air supply valve mechanism, the structure is roughened. Air is supplied to the second space substantially simultaneously with the formation.

As an example of the present invention having the first and second features, the follower shafts of the roughening bits are spaced radially outward from the drive shaft centered on the drive shaft of the electric drill while being equally spaced in the circumferential direction. They are lined up apart.

As another example of the present invention having the first and second features, a roughening device includes a soundproof member attached to the inner surface of the first to fourth side walls.

As another example of the present invention having the first and second features, a soundproof member is attached to a second space between the second support wall and the front end opening.

As another example of the present invention having the first and second features , the soundproof member is any one of felt, rock wool, glass wool, rubber sheet, and vinyl chloride sheet having a thickness of 1 to 6 cm.

As another example of the present invention having the first and second features , the transmission means includes a drive gear attached to the drive shaft of the electric drill, and a driven gear attached to the driven shaft of the roughening bit. And the gear ratio between the drive gear and the driven gear is 1.2 or more when the driven gear is 1, or 1.2 or more when the drive gear is 1.

As another example of the present invention having the first and second features, the roughening bit is either a twist drill or a core drill.

As another example of the present invention having the first and second features, the sound pressure level of the cutting sound generated when roughening the surface of the structure by the roughening device is in the range of 50 to 70 dB.

According to the roughening device of the present invention having the first feature, an electric drill having a drive shaft rotatably supported by the support walls and a plurality of driven shafts rotatably supported by the support walls. The roughening bits rotate along with the driven shaft along with the rotation of the drive shaft of the electric drill, and the roughening bits cut the structure from the surface toward the inside. It is possible to simultaneously form a plurality of roughenings of a predetermined depth extending from the surface to the inside of the object in one operation, and compared with the case where the roughenings are formed one by one, the labor and time are greatly increased. Can be shortened. The roughening device includes a connecting wall in which the housing extends rearward from the upper ends of the first and second support walls, and a fixed seat to which the front end of the electric drill is detachably fixed. Therefore, the electric drill is fixed to the fixed seat of the housing, and the drive shaft of the electric drill extending from the tip is rotatably supported on the first and second support walls of the housing, so that the electric drill is housed in the housing. The torque of the drive shaft of the electric drill can be reliably transmitted to the driven shaft of the roughening bit, and the structure is moved from the surface to the inside by the cutting edge of the roughening bit. Can be cut.

According to the roughening device of the present invention having the second feature, an electric drill having a drive shaft rotatably supported by the support walls and a plurality of driven shafts rotatably supported by the support walls. The roughening bits rotate along with the driven shaft along with the rotation of the drive shaft of the electric drill, and the roughening bits cut the structure from the surface toward the inside. It is possible to simultaneously form a plurality of roughenings of a predetermined depth extending from the surface to the inside of the object in one operation, and compared with the case where the roughenings are formed one by one, the labor and time are greatly increased. Can be shortened. The roughening device includes a bellows member that is attached to the front end edges of the first to fourth side walls and can be expanded and contracted in the front-rear direction, and a vacuum means that sucks air from the second space, and has a predetermined depth in the structure. When forming the tapping, air is sucked from the second space of the housing by the vacuum means, the space becomes negative pressure, the bellows member contracts in the front-rear direction, and sucks on the surface of the structure. Since the gap between each side wall and the surface of the structure is closed, the cutting sound generated when the surface of the structure is cut to a predetermined depth by the roughening bit does not leak outside the second space. It can prevent the generation of unpleasant and loud cutting noise during the cutting of an object, and forms a roughening of a predetermined depth extending from the surface to the inside of the structure in a quiet state with reduced cutting noise. It can be. In this roughening device, when air is sucked from the second space by the vacuum means, the dust generated during the cutting of the structure can be sucked together with the air by the vacuum means. Splashing can be prevented. In addition, by sucking the dust generated during the cutting of the structure into the vacuum means, the dust does not remain in the second space of the housing, and the soundproof member for the dust due to the dust remaining in the second space. Can be prevented, and the deterioration of the soundproof performance of the soundproofing member can be prevented.

In the tapping device of the present invention having the second feature, the housing is attached to the connecting wall extending rearward from the upper ends of the first and second support walls and the rear end of the connecting wall, and the tip of the electric drill is provided. A roughening device including a fixed seat fixed in a detachable manner fixes a distal end portion of an electric drill to a stationary seat of a housing, and a drive shaft of the electric drill extending from the distal end portion is attached to first and second support walls of the housing. By supporting it rotatably, the electric drill can be firmly fixed to the housing, and the torque of the drive shaft of the electric drill can be reliably transmitted to the driven shaft of these roughening bits, and The structure can be cut from the surface toward the inside by the cutting edge .

In the roughening device according to the second aspect of the present invention, the bellows member is attached to the front end edge of the side wall, and is connected to the front end edge of the stretchable part and the stretchable part that is bellows folded in the front-rear direction. The roughening device having a contact portion of a predetermined area that contacts, and the expansion and contraction portion and the contact portion surround the front end opening, the air is sucked from the second space of the housing by the vacuum means, and the second space is When the negative pressure is reached, the expansion / contraction part of the bellows member contracts in the front-rear direction, the contact part of the bellows member sticks to the surface of the structure, and the contact part of the bellows member surrounding the front end opening causes each side wall of the housing to Since the gap with the surface of the structure is closed, the cutting sound generated when the surface of the structure is cut to a predetermined depth by the roughening bit does not leak outside the second space, and the structure is cut. Inside That uncomfortable and can prevent occurrence of a large cutting sound, it is possible to form the roughened eye predetermined depth extending toward the inside from the surface to a structure in a quiet while suppressing a cutting sound.

In the vanishing device of the present invention having the second feature, a suction hose in which the vacuum means is connected to any one of the first to fourth side walls, and a suction device connected to the suction hose arranged outside the housing; The air volume of the suction device is 1.5-4.5m ³ / Min, and the suctioning power of the suction device in the range of 150 to 400 W is from the second space of the housing by the suction device in which the air volume is in the range and the suction power is in the range. Air is sucked in, the space is surely negative pressure, the bellows member shrinks in the front-rear direction and sucks on the surface of the structure, and the gap between the housing and the surface of the structure is closed by the bellows member. Cutting sound generated when cutting the surface of the structure to a predetermined depth by the bit does not leak outside the second space, and generation of unpleasant and loud cutting sound during cutting of the structure can be prevented, It is possible to form a roughening having a predetermined depth extending from the surface to the inside of the structure in a quiet state in which cutting noise is suppressed. The roughening device sucks dust generated during the cutting of the surface of the structure into the suction device together with the air by sucking air from the second space of the housing by the suction device whose air volume and suction power are within the above ranges. It is possible to prevent dust from being scattered during cutting of the structure. In addition, by sucking dust generated during cutting of the structure to the suction device, the dust does not remain in the second space of the housing, and the soundproof member of the dust due to the dust remaining in the second space. Can be prevented, and the deterioration of the soundproof performance of the soundproofing member can be prevented.

In the roughening device of the present invention having the second feature, the suction device is operated simultaneously with the operation of the electric drill, or the suction device is operated after 0.3 to 1.5 seconds from the operation of the electric drill. However, when the suction device is always in operation, the roughing device in which the operation of the suction device is stopped at the same time as the operation of the electric drill is stopped. The bellows member sticks to the surface of the structure when brought into contact with the surface, making it difficult to position the roughening device with respect to the surface of the structure, but the suction device does not operate before the operation of the electric drill, The bellows member can be brought into contact with the surface of the structure before the second space of the housing becomes negative pressure, and the positioning of the roughening device with respect to the surface of the structure is facilitated. Rough It is possible to form the teeth. Since the operation of the electric drill stops at the same time when the operation of the electric drill stops, the bellows member can be easily separated from the surface of the structure after forming the surface of the structure. In addition, the next roughening can be formed one after another in a short time. Further, since the suction device is stopped simultaneously with the stop of the electric drill, the power consumption of the suction device can be reduced compared to the case where the suction device is always operated, and the energy saving in the roughening device can be achieved.

In the roughening device of the present invention having the second feature, the air supply valve mechanism for supplying air to the second space is provided, and at the same time as the roughening is formed in the structure in the supply valve mechanism, The roughening device for supplying air to the space may attract the bellows member to the surface of the structure when the vacuum means sucks air from the second space and makes the second space negative pressure. Since air is supplied to the second space using the air supply valve mechanism almost simultaneously with the formation of the roughening, the negative pressure state of the second space is released after forming the roughening, and the bellows member is structured. It can be easily pulled away from the surface of the object, and the next roughening operation can be smoothly performed .

In the roughening device of the present invention having the first and second features, the driven shafts of the roughening bits are located radially outwardly of the drive shaft with the drive shaft of the electric drill as a center, and are equally spaced in the circumferential direction. In the roughing devices arranged in a spaced manner, as the drive shaft of the electric drill rotates, a plurality of driven shafts arranged at equal intervals in the direction around the drive shaft rotate to be spaced apart at equal intervals in the direction around the drive shaft. The structure can be cut from the surface to the inside by the cutting edge of the plurality of roughening bits arranged in a row, and a plurality of roughenings arranged at equal intervals around the drive shaft are formed in one operation. It is possible to form a plurality of roughenings arranged in a regular manner around the drive shaft of the electric drill in the structure .

In the roughening device of the present invention having the first and second features, the roughening device including a soundproofing member attached to the inner surface of the first to fourth side walls is configured to reduce cutting noise transmitted to the second space of the housing. The sound pressure level can be attenuated by the soundproofing members attached to the side walls, and the cutting sound generated during the formation of the roughening can be reduced. Since the sound leveling device can attenuate the sound pressure level of the cutting sound by the soundproofing member, the sound pressure level of the unpleasant and loud cutting sound that occurs during the formation of the surface roughness can be reduced and the cutting sound is suppressed. A plurality of roughenings can be formed in the structure in a quiet state.

In the roughening device of the present invention having the first and second features, the roughening device in which the soundproof member is attached to the second space between the second support wall and the front end opening is attached to the side walls. The sound pressure level of the cutting sound transmitted to the second space of the housing can be attenuated by the soundproof member attached to the second space between the second soundproof member and the second support wall and the front end opening, thereby forming a roughening The cutting sound generated inside can be reduced. Since the sound leveling device can attenuate the sound pressure level of the cutting sound by the soundproofing member, the sound pressure level of the unpleasant and loud cutting sound that occurs during the formation of the surface roughness can be reduced and the cutting sound is suppressed. A plurality of roughenings can be formed in the structure in a quiet state .

In the roughening device of the present invention having the first and second features, the soundproofing member is any one of mat-like felt, rock wool, glass wool, rubber sheet, and vinyl chloride sheet having a thickness of 1 to 6 cm. In the roughening device, since the soundproofing member is formed of fibers of felt, rock wool, and glass wool having the above-mentioned thicknesses, the soundproofing member can be made into a porous structure, and between the fibers formed by the porous structure. The sound pressure level of the cutting sound can be surely attenuated by a large number of spaces, and the cutting sound generated during the roughening can be surely reduced. Further, since the soundproofing member is formed of the rubber sheet and the vinyl chloride sheet having the above thickness, the sound pressure level of the cutting sound can be surely attenuated by the rubber sheet or the bisheet, and the cutting sound generated during the roughening is formed. Can be reliably reduced .

In the roughening device of the present invention having the first and second features, the transmission means includes a drive gear attached to the drive shaft of the electric drill and a driven gear attached to the driven shaft of the roughening bit, A roughing device in which the gear ratio between the drive gear and the driven gear is 1.2 or more when the driven gear is 1 or 1.2 or more when the drive gear is 1 When the gear ratio of these gears is driven gear 1: drive gear 1.2 or more, the rotational speed of the driven shaft of the roughing bit is faster than the rotational speed of the drive shaft of the electric drill, and the torque of the drive shaft is increased. In the enlarged state, the small-diameter roughening bit can be rotated quickly, and a plurality of roughenings can be quickly formed in the structure using the roughening bit. Further, when the gear ratio of these gears is set to drive gear 1: driven gear 1.2 or more, the rotational speed of the driven shaft of the roughing bit is slower than the rotational speed of the drive shaft of the electric drill, and the torque of the driven shaft In the state where the diameter is increased, the roughening bit having a large diameter can be slowly rotated, and the roughening bit can be used to reliably form a plurality of roughening bits in the structure.

In the roughening device according to the present invention having the first and second features, the roughening device in which the roughening bit is one of a twist drill and a core drill has a twisting mechanism in the case where the roughening bit is a twist drill. A plurality of roughening holes having a predetermined depth extending from the surface to the inside of the structure can be formed on the structure using the bit. When the roughening bit is a core drill, the structure is formed using the core drill. In addition, a plurality of cored-shaped roughenings having a predetermined depth extending from the surface toward the inside can be formed.

In the roughening device of the present invention having the first and second features, the roughening device in which the sound pressure level of the cutting sound generated during the roughening formation on the surface of the structure is in the range of 50 to 70 dB is the suction device. As a result, air is sucked from the second space of the housing, the space becomes negative pressure, the bellows member contracts in the front-rear direction, and sucks on the surface of the structure, and the bellows member causes a gap between each side wall of the housing and the surface of the structure. In addition, the sound pressure level of the cutting sound generated during cutting by the soundproofing member is attenuated by the soundproofing member, so that the sound pressure level of the cutting sound generated in the roughening device can be within the above range, and the cutting sound can be reduced. A roughening with a predetermined depth extending from the surface toward the inside of the structure can be formed in a suppressed and quiet state.

The perspective view of the roughening apparatus shown from back. The perspective view of the roughening apparatus which isolate | separates and shows each side wall. The front view of a roughening apparatus. The side view of the roughening apparatus which abbreviate | omits and shows a side wall. The perspective view of the fixing seat which isolate | separates and shows the 1st and 2nd fixing key. The figure explaining the procedure which forms a troll on the inner wall surface of a building. The figure which shows an example of the roughening formed in the inner wall surface. The perspective view of another example of the roughening apparatus shown from back. The perspective view of the roughening apparatus which isolate | separates and shows each side wall. The front view of a roughening apparatus. The side view of the roughening apparatus which abbreviate | omits and shows a side wall. The perspective view of a bellows member. The DD line end view of FIG. The figure explaining the procedure which forms a troll on the inner wall surface of a building. The side view of other examples of the roughening apparatus which abbreviate | omits a side wall and shows. The perspective view of the side wall of a roughening apparatus. The side view of other examples of the roughening apparatus which abbreviate | omits a side wall and shows. The figure explaining the procedure which forms a troll on the inner wall surface of a building. The side view of other examples of the roughening apparatus which abbreviate | omits a side wall and shows. The side view of other examples of the roughening apparatus which abbreviate | omits a side wall and shows. The side view of the compound drill installed in the roughening apparatus.

  The details of the roughening device according to the present invention will be described below with reference to the accompanying drawings such as FIG. 1 which is a perspective view of the roughening device 10A shown from the rear. 2 is a perspective view of the roughening device 10A showing the side walls 16 to 19 separately, and FIG. 3 is a front view of the roughening device 10A. 4 is a side view of the roughening device 10A with the side wall 18 omitted, and FIG. 5 is a perspective view of the fixing seat 21 with the first and second fixing keys 37 and 38 separated. In FIG. 1, the front-rear direction is indicated by an arrow A, the up-down direction is indicated by an arrow B, and the lateral direction is indicated by an arrow C.

  The roughening device 10A has a predetermined depth extending from the surface to the interior of the floor surface (floor slab), outer wall surface, inner wall surface, ceiling surface (ceiling slab), column surface, beam surface, etc. of the building (structure). And a plurality of predetermined depths extending from the surface of the road (structure) or fence (structure) to the inside. This is preferably used when forming the roughening 57. The roughening device 10A includes a housing 11 and an electric drill 12, and a plurality of twist drills 13 (a roughening bit).

  The housing 11 includes a first support wall 14 (rear support wall) having a predetermined thickness extending in the vertical direction, a second support wall 15 (front support wall) extending in the vertical direction, and a first thickness having a predetermined thickness extending in the front-rear direction. To fourth side walls 16 to 19, a connecting wall 20 having a predetermined thickness extending in the front-rear direction, and a fixed seat 21 extending in the up-down direction. The first and second support walls 14 and 15, the first to fourth side walls 16 to 19, the connecting wall 20, and the fixed seat 21 are made of a lightweight metal such as aluminum or an alloy or a reinforced plastic.

  The 1st support wall 14 and the 2nd support wall 15 are shape | molded into the rectangle of the same shape and the same size, and are located in a line in the front-back direction. The second support wall 15 is positioned forward in the front-rear direction with respect to the first support wall 14, and the first support wall 14 is positioned rearward in the front-rear direction with respect to the second support wall 15. A first central shaft hole 22 that penetrates the wall 14 is formed at the center of the first support wall 14. First to fifth bearing holes (not shown) are formed radially outward of the first central shaft hole 22. The first to fifth bearing holes are arranged at regular intervals in the direction around the shaft hole 22 with the first central shaft hole 22 as the center. A second central shaft hole 23 that penetrates the wall 15 is formed at the center of the second support wall 15. On the radially outer side of the second central shaft hole 23, sixth to tenth bearing holes 24 penetrating the second support wall 15 are formed. The sixth to tenth bearing holes 24 are arranged at equal intervals in the direction around the shaft hole 23 with the second central shaft hole 23 as the center.

  A plurality of connecting pin insertion holes are formed in the lower ends of the first and second support walls 14 and 14 so as to be spaced apart in the lateral direction. A plurality of bolt screw holes 25 are formed in both side portions (both side surfaces) of the first and second support walls 14 and 15 so as to be spaced apart in the vertical direction. A plurality of bolt screw holes 26 are formed in the upper end portions (upper surfaces) of the first and second support walls 14 and 15 so as to be spaced apart in the lateral direction. The first support wall 14 and the second support wall 15 are connected by a connection pin 27 inserted through the connection pin insertion hole of the support walls 14 and 15.

  The first to fourth side walls 16 to 19 extend forward from the first and second support walls 14 and 15. The first and second side walls 16 and 17 (upper and lower side walls) are molded into a rectangle that is long in the front-rear direction, and are spaced apart from each other in the vertical direction. The third and fourth side walls 18 and 19 (left and right side walls) are formed in a rectangular shape having the same shape and the same length in the front-rear direction, and are spaced apart from each other in the lateral direction. As for the 1st-4th side walls 16-19, the cross | intersection location of these walls 16-19 is being fixed by the fixing means (welding, melt | fusion, adhesion | attachment). A plurality of bolt insertion holes 28 are formed in the third and fourth side walls 18 and 19 so as to be spaced apart in the vertical direction. The first to fourth side walls 16 to 19 are firmly fixed to the first and second support walls 14 and 15 by a plurality of fixing bolts 29 (male screws). The fixing bolts 29 are inserted into the bolt insertion holes 28 of the side walls 16 to 19 and screwed into the bolt screw holes 25 of the support walls 14 and 15.

  As shown in FIG. 4, the housing 11 has a first space 30 (gear housing space) having a predetermined volume surrounded by the first and second support walls 14 and 15 and the first to fourth side walls 16 to 19. A second space 31 (meshing bit accommodation space) having a predetermined volume surrounded by the second support wall 15 and the first to fourth side walls 16 to 19 is defined, and the first to first A rectangular front end opening 32 surrounded by the front end edges of the four side walls 16 to 19 is defined. In the housing 11, the first space 30 and the second space 31 are arranged in the front-rear direction, the second space 31 is positioned forward in the front-rear direction with respect to the first space 30, and the first space 30 with respect to the second space 31. Is located rearward in the front-rear direction.

  The connecting wall 20 is molded into a rectangle that is long in the front-rear direction, and extends rearward from the upper end portions (upper surfaces) of the first and second support walls 14 and 15. A plurality of bolt insertion holes 33 that are spaced apart in the lateral direction are perforated at the front end portion of the connecting wall 20, and a plurality of bolt insertion holes 34 that are spaced apart in the lateral direction are perforated at the rear end portion of the connecting wall. Has been. A long handle 35 is attached to the upper surface of the connecting wall 20 in the lateral direction. The connecting wall 20 is firmly fixed to the first and second support walls 14 and 15 by a plurality of fixing bolts 36 (male screws). The fixing bolts 36 are inserted into the bolt insertion holes 33 of the connecting wall 20 and screwed into the bolt screw holes 26 of the support walls 14 and 15.

  The fixed seat 21 is formed by a first fixed key 37 having a predetermined thickness and a second fixed key 38 having a predetermined thickness that is detachably fixed to the first fixed key 37. The first fixed key 37 is formed into a rectangular shape that is long in the vertical direction, and extends downward from the rear end of the connecting wall 20. A plurality of bolt screw holes 39 are formed in the upper end portion (upper surface) of the first fixed key 37 so as to be spaced apart in the horizontal direction. A plurality of bolt screw holes 40 that are lined up and down in the vertical direction are perforated on the side (side surface) of the first fixed key 37, and are located between these screw holes 40 and are recessed in a lateral direction. The first fixed groove 41 is formed (see FIG. 5). The first fixing key 37 is firmly fixed to the connecting wall 20 by a plurality of fixing bolts 42 (male screws). The fixing bolts 42 are inserted into the bolt insertion holes 34 of the connecting wall 20 and screwed into the bolt screwing holes 39 of the first fixing key 37.

  The second fixed key 38 is formed into a rectangular shape that is long in the vertical direction, and is detachably fixed to a side portion (side surface) of the first fixed key 37. A plurality of bolt insertion holes 43 arranged side by side in the vertical direction are perforated on the side portion (side surface) of the second fixed key 38, and a semicircular first recess that is located between the insertion holes 43 and is recessed in the lateral direction. Two fixing grooves 44 are formed. The second fixed key 38 is firmly fixed to the first fixed key 37 by a plurality of fixing bolts 45 (male screws). The fixing bolts 45 are inserted into the bolt insertion holes 43 of the second fixing key 38 and screwed into the bolt screwing holes 40 of the first fixing key 37.

  The electric drill 12 has a bearing 46 (tip portion) and a drive shaft 47 extending forward from the bearing 46, and a main body portion thereof is disposed behind the first support wall 14. The electric drill 12 is provided with a trigger 48 (switch), a speed switching lever (not shown), and a forward / reverse rotation switching lever (not shown). A cord 49 extending from the electric drill 12 is connected to an AC power source (not shown). The electric drill 12 has a built-in motor. When the trigger 48 is pulled, the motor is driven and the drive shaft 47 is rotated. Although an AC power supply type electric drill is illustrated as the electric drill 12, a rechargeable electric drill can also be used.

  The electric drill 12 has a bearing 46 fixed to the fixed seat 21 in a detachable manner. In order to fix the bearing 46 of the electric drill 12 to the fixed seat 21, the bearing 46 is fitted into the first fixing groove 41 of the first fixing key 37, and then the second fixing groove 44 of the second fixing key 38 is inserted into the bearing 46. And the second fixed key 38 is installed on the bearing 46. Next, the bolt 45 is screwed into the bolt screw hole 40 of the first fixing key 37 while the fixing bolt 45 is inserted into the bolt insertion hole 43 of the second fixing key 38. The bearing 46 of the electric drill 12 is firmly fixed to the fixed seat 21 while being sandwiched between the first fixed key 37 and the second fixed key 38.

  The drive shaft 47 of the electric drill 12 is rotatably inserted into the first central shaft hole 22 of the first support wall 14 and supported by the shaft hole 22, and passes through the first space 30 and the second support wall 15. , And is rotatably inserted into the second central shaft hole 23 of the second support wall 15 and supported by the shaft hole 23. A drive gear 50 (transmission means) for transmitting the rotation of the shaft 47 to each twist drill 13 is attached to the drive shaft 47 extending in the first space 30.

  These twist drills 13 are made of cemented carbide. The twist drill 13 is disposed in the first and second spaces 30 and 31, and includes a driven shaft 51 (handle), a blade 52 extending forward from the driven shaft 51, and a fixing ring 53. The driven shafts 51 of the twist drills 13 are located radially outward of the drive shaft 47 of the electric drill 12 and are arranged at equal intervals around the shaft 47 around the drive shaft 47. Therefore, the twist drills 13 are positioned radially outward of the drive shaft 47 and are arranged at equal intervals in the direction around the shaft 47. The rear end portion of the driven shaft 51 of the twist drill 13 is rotatably inserted into the first to fifth bearing holes of the first support wall 14, and the middle portion thereof is the sixth to tenth bearing holes of the second support wall 15. 24 extends through the first space 14 and the second space 15. The blade 52 of the twist drill 13 is located in the second space 15, and the tip 54 (a part of the blade 52) is exposed forward from the front end opening 32 of the housing 11.

  A driven gear 55 (transmission means) is attached to the driven shaft 51 located in the first space 30 and a fixing ring 53 is fixed. A fixed ring 53 is fixed to the driven shaft 51 located in the second space 31. The driven gear 55 is located radially outward of the drive gear 50 and is arranged at equal intervals in the direction around the gear 50 with the drive gear 50 as the center. The blades of these driven gears 55 are engaged with the blades of the drive gear 50. The driven gear 55 is rotated by the rotation of the drive gear 50. Although five twist drills 13 are illustrated, the number of twist drills 13 is not particularly limited, and the number of twist drills 13 may be two or more.

  The gear ratio of the drive gear 50 to the driven gear 55 is 1.2 or more, preferably 1.5 or more, if the driven gear 55 is 1. Alternatively, when the driving gear 50 is 1, the driven gear 55 is 1.2 or more, preferably the driven gear 55 is 1.5 or more. When the gear ratio is 1 for the driven gear 55 and the drive gear 50 is 1.2 or more, the driven gear 55 rotates faster (high speed) than the drive gear 50. When the drive gear 50 is 1 and the drive gear 55 is 1.2 or more, the driven gear 55 rotates slower (low speed) than the drive gear 50.

  The gear ratio between the drive gear 50 and the driven gear 55 may be 1: 1. Further, a gear may be interposed between the drive gear 50 and the driven gear 55. Even in this case, the gear ratio between the drive gear 50 and the driven gear 55 is preferably 1.2 or more when the driven gear 55 is 1, or the drive gear 50 is 1. In this case, it is preferable that the driven gear 55 is 1.2 or more. When a gear is interposed between the drive gear 50 and the driven gear 55, the rotation direction of the drive gear 50 (drive shaft 47) is the same as the rotation direction of the driven gear 55 (driven shaft 51).

  FIG. 6 is a diagram for explaining a procedure for forming the roughening 57 on the inner wall surface 56 of the building using the roughening device 10 </ b> A, and FIG. 7 is an example of the roughening 57 formed on the inner wall surface 56. FIG. In FIG. 6, illustration of the side wall 18 is omitted. When the roughening device 57 is formed on the inner wall surface 56 (concrete or mortar) of the building using the roughening device 10A, the handle of the connecting wall 20 is held with the handle of the electric drill 12 with the other hand. Then, the roughening device 10A is lifted so that the front end opening 32 of the housing 11 faces the inner wall surface 56. In that state, the trigger 48 of the electric drill 12 is pulled.

  When the trigger 48 is pulled, the motor is driven to rotate the drive shaft 47 as shown by an arrow L1 in FIG. 6, and the driven shaft 51 (twist drill) as shown by the arrow L2 in FIG. 13) rotates. While rotating the twist drill 13, the housing 11 is moved toward the inner wall surface 56 indicated by the arrow L <b> 3, and the tip portions 54 of the blades 52 of the twist drill 13 exposed forward from the front end opening 32 of the housing 11 are moved to the inner wall surface 56. Press on. By pressing the distal end portion 54 of the blade 52 against the inner wall surface 56, the inner wall surface 56 is cut from the surface toward the inside by the drill 13, and the distal end portion 54 bites into the inside from the surface of the inner wall surface 56, as shown in FIG. Thus, a plurality of roughenings 57 extending from the surface toward the inside are formed on the inner wall surface 56.

  After making the roughening 57 on the inner wall 56, the roughening device 10A is pulled away from the inner wall 56, and then the device 10A is moved to the location of the inner wall 56 where the roughening 57 is formed. The next roughening 57 is formed in 56. In addition, the roughening 57 can be made not only on the inner wall surface 56 but also on all surfaces such as the floor surface, outer wall surface, ceiling surface, column surface, and beam surface of the building by the same procedure.

  In the roughening device 10A, as the drive shaft 47 of the electric drill 12 rotates, the twist drill 13 (a roughening bit) rotates together with the driven shaft 51, and the inner wall surface 56 is removed from the surface by the blade 52 of the twist drill 13. Since cutting is performed toward the inside, a plurality of roughenings 57 having a predetermined depth extending from the surface to the inside can be simultaneously formed in the inner wall surface 56 by one operation, and the roughenings 57 are formed one by one. Compared to the case, the labor and time can be greatly reduced.

  In the roughening device 10A, when the gear ratio of the gears 50 and 55 is set to 1 for the driven gear 55 and the drive gear 50 is set to 1.2 or more, the twist drill 13 with respect to the rotational speed of the drive shaft 47 of the electric drill 12 is used. The twist drill 13 having a small diameter can be rotated fast (high speed) in a state where the rotational speed of the driven shaft 51 is increased and the torque of the drive shaft 47 is increased, and the inner wall surface 56 is utilized by using the twist drill 13. A plurality of roughenings 57 can be quickly formed. Further, when the gear ratio of the gears 50 and 55 is set to 1 for the drive gear 50 and the driven gear 55 is set to 1.2 or more, the driven shaft 51 of the twist drill 13 with respect to the rotational speed of the drive shaft 47 of the electric drill 12. The twist drill 13 having a large diameter can be slowly rotated in a state where the rotation speed of the shaft is increased and the torque of the driven shaft 51 is increased, and a plurality of roughening 57 is applied to the inner wall surface 56 by using the twist drill 13. Can be reliably formed.

  FIG. 8 is a perspective view of another example of the roughening device 10B shown from the rear, and FIG. 9 is a perspective view of the roughening device 10B showing the side walls 16 to 19 separately. FIG. 10 is a front view of the roughening device 10B, and FIG. 11 is a side view of the roughening device 10B with the side wall 18 omitted. 12 is a perspective view of the bellows member 59, and FIG. 13 is an end view taken along the line DD of FIG. In FIG. 8 to FIG. 11, illustration of the suction device 65 is omitted. In FIG. 8, the front-rear direction is indicated by arrow A, the up-down direction is indicated by arrow B, and the horizontal direction is indicated by arrow C.

  As with the case of FIG. 1, the surface roughness device 10 </ b> B extends from the surface to the floor surface (floor slab), outer wall surface, inner wall surface, ceiling surface (ceiling slab), column surface, beam surface, etc. of the building (structure). It is suitably used for forming a plurality of roughenings 57 (see FIG. 7) having a predetermined depth extending inward, and is directed from the surface to the inside on roads (structures) and fences (structures). This is preferably used when forming a plurality of roughenings 57 having a predetermined depth extending in the direction.

  1 differs from that in FIG. 1 in that it has a soundproof member 58, a bellows member 59, and a vacuum means 60, and the other configuration is the same as that in FIG. The description of the apparatus 10A is used, and the same reference numerals as those of the apparatus 10A in FIG. The roughening device 10B includes a housing 11 and an electric drill 12, a plurality of twist drills 13 (a roughening bit), a soundproof member 58, a bellows member 59, and a vacuum means 60.

  The housing 11 includes a first support wall 14 (rear support wall) and a second support wall 15 (front support wall), first to fourth side walls 16 to 19, a connecting wall 20 and a fixed seat 21 (first fixed key). 37 and the second fixed key 38) and a flange 61. The first and second support walls 14 and 15, the first to fourth side walls 16 to 19, the connecting wall 20, and the fixed seat 21 are the same as those of the apparatus 10A of FIG. The flange 61 is attached to the front end edge of the first to fourth side walls 16 to 19 and surrounds the front end opening 32. The flange 61 is made of a lightweight metal such as aluminum or an alloy, or reinforced plastic. The flange 61 is fixed to the front end edges of the first to fourth side walls 16 to 19 by fixing means (welding, fusing, adhesion).

  The electric drill 12 and the twist drill 13 are the same as those of the apparatus 10A of FIG. 1, but the electric drill 12 of this apparatus 10B has a built-in microcomputer (not shown), and the microcomputer is the electric drill 12's. The vacuum means 60 is started / stopped (ON / OFF) in relation to the start / stop (ON / OFF). Specifically, the vacuum means 60 is operated (ON) at the same time when the electric drill 12 is operated (ON), or the vacuum means is 0.3 to 1.5 seconds after the electric drill 12 is operated (ON). 60 is operated (ON). Further, the operation of the vacuum means 60 is stopped (OFF) simultaneously with the operation of the electric drill 12 being stopped (OFF). The activation time of the vacuum means 60 can be freely set in the range of 0.3 to 1.5 seconds.

  The electric drill 12 has a bearing 46 fixed to the fixed seat 21 in a detachable manner. A drive gear 50 (transmission means) for transmitting the rotation of the shaft 47 to each twist drill 13 is attached to the drive shaft 47 of the electric drill 12 extending in the first space 30. The blade 52 of the twist drill 13 is located in the second space 15, and the tip 54 (a part of the blade 52) is exposed forward from the front end opening 32 of the housing 11. A driven gear 55 (transmission means) is attached to the driven shaft 51 of the twist drill 13 located in the first space 30. The gear ratio between the drive gear 50 and the driven gear 55 is the same as that of the device 10A of FIG.

  The soundproof member 58 is fixed to substantially the entire area of the inner surfaces of the first to fourth side walls 16 to 19. The soundproof member 58 is fixed to the inner surfaces of the walls 16 to 19 by fixing means (adhesive or double-sided tape). The soundproof member 58 is made of any one of felt, rock wool, glass wool, rubber sheet, and vinyl chloride sheet (soundproof mat), but may be made of other materials. Felt, rock wool, glass wool, rubber sheet, and vinyl chloride sheet have a thickness in the range of 1 to 6 cm. The soundproofing member 58 has a porous structure formed of fibers having the above-mentioned thickness, such as felt, rock wool, and glass wool, which are intertwined with each other, and a large number of spaces between fibers formed by the porous structure are defined. . In the soundproof member 58, the sound pressure level of the cutting sound propagated to the second space 31 of the housing 11 is attenuated in the space between the fibers. Moreover, the sound pressure level of the cutting sound propagated to the second space 31 of the housing 11 is attenuated by the rubber sheet or the vinyl chloride sheet.

  When the thickness of the felt, rock wool, glass wool, rubber sheet, or vinyl chloride sheet is less than 1 cm, the sound pressure level attenuation performance of the soundproof member 58 is lowered, and the sound pressure level of the cutting sound propagated to the second space 31 is reduced. May not be attenuated. When the thickness of felt, rock wool, glass wool, rubber sheet, or vinyl chloride sheet exceeds 6 cm, the soundproof member 58 is bulky, and a space for arranging a plurality of twist drills 13 (meshing bits) in the second space 31 is secured. Not only becomes difficult, but the weight of the roughening device 10B becomes larger than necessary, and the degree of freedom in moving the device 10B is lost, making it difficult to move the device 10B freely.

  The bellows member 59 has an expansion / contraction part 62 attached to the flange 61 (the front end edge of the first to fourth side walls 16 to 19), and a contact part 63 having a predetermined area connected to the front end edge of the expansion / contraction part 62. The stretchable part 62 is bellows folded (zigzag folded) in the front-rear direction, and the rear end part thereof is fixed to the front surface of the flange 61 by fixing means (adhesive, bolt, and nut). The stretchable part 62 and the contact part 63 form a frame surrounding the entire front end opening 32 of the housing 11. The bellows member 59 expands and contracts in the front-rear direction via the expandable portion 62. In the bellows member 59, when the floor surface, the outer wall surface, the inner wall surface, the ceiling surface, the column surface, the beam surface, etc. of the building are cut to a predetermined depth from the surface toward the inside, The surface).

  The stretchable part 62 and the abutting part 63 are made of nylon fiber or polyester fiber between a cloth or rubber sheet (chloroprene rubber, ethylene propylene rubber, butyl rubber, acrylonitrile butadiene rubber, chlorosulfonated ethylene rubber) made of nylon fiber or polyester fiber. A rubberized cloth or the like with a cloth made of polyester fiber interposed can be used.

  The vacuum means 60 is formed of a suction hose 64 (a bellows hose) and a suction device 65, and sucks (exhausts) air from the first space 30 of the housing 11, and the floor surface, outer wall surface, inner wall surface, and ceiling surface of the building. The second space 31 is set to a negative pressure when the roughening 57 is formed on the column surface, the beam surface, etc. (from cutting disclosure to cutting including continuing cutting). The suction hose 64 extends from the suction device 65 toward the housing 11, passes through the side wall 17 and the soundproof member 58, and reaches the second space 31.

  As the suction device 65, a device having a suction pump or a suction fan and a dust collection function, or a predetermined dust collection volume (dust collection method: two-way method (paper pack / cloth bag), paper pack method, cloth filter method, special It is possible to use a commercial vacuum cleaner having a dust collecting function such as a filter system. The suction device 65 incorporates a control means (not shown), and is provided with an ON / OFF switch (not shown) for starting and stopping it, and adjusting the suction air volume (suction power). An air volume adjusting mechanism (not shown) is installed. The control unit of the suction device 65 is connected to the microcomputer of the electric drill 12 via the interface 66, and controls ON / OFF of the suction device 65 based on a command from the microcomputer.

  The electric drill 12 does not have a built-in microcomputer, and the electric drill 12 and the suction device 65 may not be connected. In this case, the start / stop of the electric drill 12 and the start / stop of the suction device 65 are not linked, and the electric drill 12 and the suction device 65 are operated separately, and the electric drill 12 and the suction device 65 are stopped separately. Let

The suction device 65 has an air volume in the range of 1.5 to 4.5 m ³ / min (preferably in a range of 1.75 to 3.5 m ³ / min), and a suction power of 150 to 400 W (preferably Is in the range of 200-300 W). If the air volume is less than 1.5 m ³ / min and the suction power is less than 150 W, the suction device 65 (vacuum means 60) cannot make the second space 31 sufficiently negative, and the bellows member 59 The contact portion 63) cannot block a gap between the floor surface, the outer wall surface, the inner wall surface, the ceiling surface, the column surface, the beam surface, and the like and the housing 11 (contact portion 63). As a result, it is possible to prevent leakage of cutting sound generated when the floor surface, the outer wall surface, the inner wall surface, the ceiling surface, the column surface, the beam surface and the like are cut to a predetermined depth by the twist drill 13 to the outside of the housing 11. The dust (chip) generated during the cutting of these surfaces cannot be sufficiently sucked by the suction device 65. When the air volume exceeds 4.5 m ³ / min and the suction power exceeds 400 W, the bellows member 16 (contact portion 49) is applied to the floor surface, outer wall surface, inner wall surface, ceiling surface, column surface, beam surface, etc. It is strongly adsorbed and it becomes difficult to move the apparatus 10B freely.

  Since the air volume of the suction device 65 is in the above range and the suction power of the suction device 65 is in the above range, air is sufficiently sucked from the second space 31 of the housing 11 by the device 65 to ensure the second space 31. The negative pressure can be set, and the gap between the floor 11, the outer wall surface, the inner wall surface, the ceiling surface, the column surface, the beam surface, and the like and the housing 11 can be closed by the bellows member 16 (contact portion 46). Furthermore, dust generated during cutting of the floor surface, the outer wall surface, the inner wall surface, the ceiling surface, the column surface, the beam surface, and the like can be sucked by the suction device 65.

  FIG. 14 is a diagram illustrating a procedure for forming the roughening 57 on the inner wall surface 56 of the building using the roughening device 10B. In FIG. 14, the illustration of the suction device 65 is omitted. When the roughening device 57 is formed on the inner wall surface 56 (concrete or mortar) of the building using the roughening device 10B, the suction airflow of the device 65 is set by the airflow adjustment mechanism of the suction device 65, and then the suction device 65 Turn on the switch. Even if the switch is turned on, the suction device 65 does not operate immediately. Next, the handle of the electric electric drill 12 is held with one hand, the handle 35 of the connecting wall 20 is held with the other hand, the roughening device 10B is lifted, and the front end opening 32 of the housing 11 is opposed to the inner wall surface 56. The contact portion 63 of the bellows member 59 is brought into contact with the inner wall surface 56. In that state, the trigger 48 of the electric drill 12 is pulled.

  When the trigger 48 is pulled, the motor is driven to rotate the drive shaft 47 as shown by an arrow L1 in FIG. 14, and the driven shaft 51 (twist drill) as shown by the arrow L2 in FIG. 13) rotates. The microcomputer of the electric drill 12 can be used at the same time (simultaneous with the operation of the electric drill 12) or after 0.3 to 1.5 seconds (0.3 to 1.5 seconds have elapsed since the operation of the electric drill 12). After that, an activation command is output to the control means of the suction device 65. The control means of the suction device 65 activates the suction device 65 in accordance with a command from the microcomputer.

  When the suction device 65 is operated, as shown by an arrow L4 in FIG. 14, air of a set air volume is sucked into the device 65 through the suction hose 64 from the second space 31 of the housing 11. When the air in the second space 31 is sucked by the suction device 65, the space 31 becomes negative pressure, the expansion / contraction part 62 of the bellows member 59 contracts in the front-rear direction, and the contact part 63 attracts the inner wall surface 56. The front end portion 54 of the blade 52 of the rotating twist drill 13 is exposed forward from the front end opening 32 of the housing 11. In this state, by pressing the tip 54 of the blade 52 of the drill 13 against the inner wall 56, the inner wall 56 is cut from the surface toward the inside by the drill 13, and the tip 54 is cut from the surface of the inner wall 56 to the inside. A plurality of roughenings 57 extending from the surface to the inside are formed on the inner wall surface 56 (see FIG. 7).

  During cutting of the inner wall surface 56 by the blade 52 of the twist drill 13, air is sucked from the second space 31 of the housing 11 by the suction device 65, the space 31 becomes negative pressure, and the expansion / contraction part 62 of the bellows member 59 moves in the front-rear direction. When the contact portion 63 is attracted to the inner wall surface 56 and the gap between the housing 11 (flange 61) and the inner wall surface 56 is closed by the contact portion 63, and the inner wall surface 56 is cut by the twist drill 13 The generated cutting sound does not leak to the outside of the housing 11. Further, the sound pressure level of the cutting sound propagated to the second space 31 of the housing 11 is attenuated by the soundproof member 58 fixed to the inner surfaces of the side walls 16 to 19. As a result, even if a cutting sound is generated from the cutter device 10B during the cutting of the inner wall surface 56, the sound pressure level is suppressed to 50 to 70 dB. Further, when air is sucked from the second space 31 by the suction device 65, dust generated during the cutting of the inner wall surface 56 is sucked together with the air to the suction device 65 (the dust collecting function of the suction device 65), and the dust is 2 does not remain in the space 31.

  After the roughening 57 is formed on the inner wall surface 56, when the trigger 48 of the electric drill 12 is returned, the motor stops, the rotation of the drive shaft 47 stops, and the rotation of the driven shaft 51 (twist drill 13) stops. . The microcomputer of the electric drill 12 outputs a stop command to the control means of the suction device 65 at the same time (at the same time as stopping the electric drill 12). The control means of the suction device 65 stops the suction device 65 in accordance with a command from the microcomputer.

  After making the roughening 57 on the inner wall surface 56, the roughening device 10B is pulled away from the inner wall surface 56, and then the device 10B is moved to the location of the inner wall surface 56 where the roughening 57 is formed. The next roughening 57 is formed in 56. In addition, the roughening 57 can be made not only on the inner wall surface 56 but also on all surfaces such as the floor surface, outer wall surface, ceiling surface, column surface, and beam surface of the building by the same procedure.

  The roughening device 10B has the following effects in addition to the effects it has in FIG. When the roughening device 10B forms the roughening 57 having a predetermined depth on the inner wall surface 56 of the building (structure), air is sucked from the second space 31 of the housing 11 by the suction device 65 (vacuum means 60). Thus, the space 31 becomes negative pressure, the expansion / contraction portion 62 of the bellows member 59 contracts in the front-rear direction, and the contact portion 63 of the bellows member 59 attracts to the inner wall surface 56. Therefore, the cutting sound generated when the surface 56 is cut to a predetermined depth by the blade 52 of the twist drill 13 does not leak to the outside of the housing 11, and unpleasant and loud cutting noise is generated during cutting. Occurrence can be prevented. Further, the sound pressure level of the cutting sound propagated to the second space 31 of the housing 11 can be attenuated by the soundproofing member 58 attached to the side walls 16 to 19, and the cutting sound generated during the formation of the roughening 57 can be reduced. can do. The roughening device 10B has a predetermined depth extending from the surface to the inner wall 56 in a quiet state in which cutting noise is suppressed (sound pressure level of cutting sound generated in the roughening device 10B: 50 to 70 dB). A roughening 57 can be formed.

  The roughening device 10B is configured such that when air is sucked from the second space 31 of the housing 11 by the suction device 65 (vacuum means 60), the dust generated during the cutting of the inner wall surface 56 together with the suction device 65 (dust collecting mechanism). ) To prevent dust from being scattered during the cutting of the surface 56. Further, the dust generated during the cutting of the inner wall surface 56 is caused to be sucked by the suction device 65, so that the dust does not remain in the internal space 23 of the housing 11, but the dust due to the dust remaining in the second space 31. Can be prevented from adhering to the soundproofing member 58, and the soundproofing performance of the soundproofing member 58 can be prevented from being lowered.

  In the roughening device 10B, when the suction device 65 is constantly operating, the second space 31 is always at a negative pressure, and the contact portion 63 of the bellows member 58 when the bellows member 59 is brought into contact with the inner wall surface 56. However, the suction device 65 is not operated before the electric drill 12 is operated, and the second space 31 is not negatively pressured. The contact portion 63 of the bellows member 59 can be brought into contact with the inner wall surface 56, the positioning of the roughening device 10B with respect to the surface 56 is facilitated, and the roughening 57 can be formed at a desired position of the inner wall surface 56. it can.

  In the roughening device 10B, since the operation of the suction device 65 stops simultaneously with the operation of the electric drill 12, the roughening 57 is formed on the inner wall surface 56, and then the contact portion 63 of the bellows member 59 is easily formed from the surface 56. The next roughening 57 can be formed on the inner wall surface 56 one after another in a short time. Further, since the suction device 65 is stopped simultaneously with the stop of the electric drill 12, the power consumption of the suction device 65 can be reduced compared with the case where the suction device 65 is always operated, and energy saving in the roughening device 10B is achieved. be able to.

  15 is a side view of another example of the roughening device 10C with the side wall 18 omitted, and FIG. 16 is a perspective view of the side walls 16 to 19 of the roughening device 10C. In FIG. 15, the suction device 65 is not shown. 8 is different from that shown in FIG. 8 in that a soundproof member 58 is attached to the second space 31 between the second support wall 15 and the front end opening 32 in addition to the side walls 16 to 19. Yes, since the other configurations are the same as those of the roughening devices 10A and 10B in FIGS. 1 and 8, the description of the devices 10A and 10B in FIGS. 1 and 8 is used, and the same reference numerals as those in the devices 10A and 10B are used. Thus, detailed description of the other components of the roughening device 10C will be omitted. The roughening device 10 </ b> C includes a housing 11, an electric drill 12, a plurality of twist drills 13 (a roughening bit), a soundproof member 58, a bellows member 59, and a vacuum means 60.

  The housing 11 includes a first support wall 14 (rear support wall) and a second support wall 15 (front support wall), first to fourth side walls 16 to 19, a connecting wall 20 and a fixed seat 21 (first fixed key). 37 and the second fixed key 38) and a flange 61. The first and second support walls 14 and 15, the first to fourth side walls 16 to 19, the connecting wall 20, the fixing seat 21, and the flange 61 are the same as those of the devices 10 </ b> A and 10 </ b> B of FIGS. 1 and 8.

  The electric drill 12 and the twist drill 13 are the same as those of the apparatus 10B of FIG. The microcomputer incorporated in the electric drill 12 operates (ON) the vacuum means 60 at the same time as the electric drill 12 operates (ON), or 0.3 to 1. after the electric drill 12 operates (ON). After 5 seconds have elapsed, the vacuum means 60 is activated (ON). Further, the operation of the vacuum means 60 is stopped (OFF) simultaneously with the operation of the electric drill being stopped (OFF).

  The electric drill 12 has a bearing 46 fixed to the fixed seat 21 in a detachable manner. A drive gear 50 (transmission means) for transmitting the rotation of the shaft 47 to each twist drill 13 is attached to the drive shaft 47 of the electric drill 12 extending in the first space 30. The blade 52 of the twist drill 13 is located in the second space 15, and the tip 54 is exposed forward from the front end opening 32 of the housing 11. A driven gear 55 (transmission means) is attached to the driven shaft 51 of the twist drill 13 located in the first space 30. The gear ratio between the drive gear 50 and the driven gear 55 is the same as that of the devices 10A and 10B of FIGS.

  The soundproof member 58 is fixed to substantially the entire inner surface of the first to fourth side walls 16 to 19, and is the second space 31 between the second support wall 15 and the front end opening 32, and the suction hose 64. It is attached to the rear. The soundproof member 58 attached to the second space 31 is formed with a through hole through which the driven shaft 51 of the twist drill 13 is rotatably inserted. The soundproof member 58 is fixed to the inner surfaces of the side walls 16 to 19 by fixing means (adhesive or double-sided tape), and the soundproof member 58 in the second space 31 is fixed to the inner surface of the soundproof member 58 attached to each side wall. It is fixed by (adhesive or double-sided tape). These soundproof members 58 are made of the same material as that of the device 10B of FIG. 8 and have a thickness in the range of 1 to 6 cm. The reason why the thickness of the soundproof member 58 is in the above range is the same as that of the device 10B of FIG. In the soundproof member 58, the sound pressure level of the cutting sound propagated to the second space 31 of the housing 11 is attenuated in the space between the fibers.

  The bellows member 59 has an expansion / contraction part 62 attached to the flange 61 (the front end edge of the first to fourth side walls 16 to 19), and a contact part 63 having a predetermined area connected to the front end edge of the expansion / contraction part 62. The stretchable part 62 and the contact part 63 form a frame surrounding the entire front end opening 32 of the housing 11. The expansion / contraction part 62 and the contact part 63 are made of the same material as that of the apparatus 10B of FIG.

The vacuum means 60 is formed of a suction hose 64 (bellows hose) and a suction device 65, and sucks (exhausts) air from the second space 31 of the housing 11 to form the roughening 57 (cutting from the time when cutting is disclosed). The second space 31 is set to a negative pressure during cutting including during continuation). The suction hose 64 extends from the suction device 65 toward the housing 11, passes through the side wall 17 and the soundproof member 58, and reaches the second space 31. The suction device 65 is the same as that of the device 10B of FIG. 8, and its air volume is in the range of 1.5 to 4.5 m ³ / min (preferably in the range of 1.75 to 3.5 m ³ / min). The suction power is in the range of 150 to 400 W (preferably 200 to 300 W). The reason why the air volume and the suction power of the suction device 65 are in the above-described range is the same as that of the device 10B in FIG.

  The procedure for forming the roughening 57 on the inner wall surface 56 of the building using the roughening device 10C is the same as that of the device 10B of FIG. The roughening device 10C has the following effects in addition to the effects of the devices 10A and 10B shown in FIGS. The roughening device 10 </ b> C can attenuate the sound pressure level of the cutting sound propagated to the second space 31 of the housing 11 by the soundproof member 58 attached to the side walls 16 to 19 and is attached to the second space 31. The soundproofing member 58 can be attenuated, and the cutting noise generated during the formation of the roughening member 57 can be reliably reduced. The roughening device 10C has a predetermined depth extending from the surface to the inner surface 56 in a quiet state in which cutting noise is suppressed (sound pressure level of cutting sound generated in the roughening device 10C: 50 to 70 dB). A roughening 57 can be formed.

  FIG. 17 is a side view of another example of the roughening device 10D with the side wall 18 omitted, and FIG. 18 uses the roughening device 10D to form a roughening 57 on the inner wall surface 56 of the building. It is a figure explaining a procedure. In FIGS. 17 and 18, the suction device 65 is not shown. 8 is different from that of FIG. 8 in that the air supply valve mechanism 67 is installed in the second support wall 15 and the air supply ports 68 and 69 are formed in the first and second support walls 14 and 15. Since the other configurations are the same as those of the roughening devices 10A and 10B in FIGS. 1 and 8, the description of the devices 10A and 10B in FIGS. 1 and 8 is used, and the devices 10A and 10B. The description of other components in the roughening device 10C will be omitted. The roughening device 10D includes a housing 11 and an electric drill 12, a plurality of twist drills 13 (a roughening bit), a soundproof member 58 and a bellows member 59, a vacuum means 60, and an air supply valve mechanism 67. .

  The first and second support walls 14 and 15 and the first to fourth side walls 16 to 19, the connecting wall 20, the fixed seat 21, and the flange 61 of the housing 11 are the same as those of the devices 10 </ b> A and 10 </ b> B of FIGS. 1 and 8. However, an air supply port 68 penetrating the wall 14 is formed at the upper end of the first support wall 14. The electric drill 12, the twist drill 13, the soundproof member 58, the bellows member 59, and the vacuum means 60 are the same as those of the apparatus 10B of FIG.

  The air supply valve mechanism 67 is formed of a metal rod 70 and a coil spring 71. The metal rod 70 includes a lid 72 positioned in the first space 14 and a spring receiver 73 positioned in the second space 15. The metal rod 70 is inserted into the air supply port 69 of the second support wall 15 and is second. Located in the space, it extends in the front-rear direction. A tip 74 of the metal rod 70 is exposed to the outside from the front end opening 32. The coil spring 71 is disposed between the second support wall 15 and the spring receiver 73 and urges the metal rod 70 forward toward the front end opening 32.

  The procedure for forming the roughening 57 on the inner wall surface 56 (concrete or mortar) of the building using the roughening device 10D is as follows. After the switch of the suction device 65 is turned ON, the handle of the electric drill 12 is held with one hand, the handle 35 of the connecting wall 20 is held with the other hand, the roughening device 10D is lifted, and the front end opening 32 of the housing 11 is opened. While facing the inner wall surface 56, the contact portion 63 of the bellows member 59 is brought into contact with the inner wall surface 56. In that state, the trigger 48 of the electric drill 12 is pulled.

  When the trigger 48 is pulled, the motor is driven to rotate the drive shaft 47 as shown by an arrow L1 in FIG. 18, and the driven shaft 51 (twist drill) as shown by the arrow L2 in FIG. 13) rotates. The microcomputer of the electric drill 12 outputs a start command to the control means of the suction device 65 at the same time or 0.3 to 1.5 seconds after that. The control means of the suction device 65 activates the suction device 65 in accordance with a command from the microcomputer.

  When the suction device 65 is operated, as shown by an arrow L <b> 4 in FIG. 18, a set air volume of air is sucked into the device 65 through the suction hose 64 from the second space 31 of the housing 11. When the air in the second space 31 is sucked by the suction device 65, the space 31 becomes negative pressure, the expansion / contraction part 62 of the bellows member 59 contracts in the front-rear direction, and the contact part 63 attracts the inner wall surface 56. The front end portion 54 of the blade 52 of the rotating twist drill 13 is exposed forward from the front end opening 32 of the housing 11. In this state, by pressing the tip 54 of the blade 52 of the drill 13 against the inner wall 56, the inner wall 56 is cut from the surface toward the inside by the drill 13, and the tip 54 is cut from the surface of the inner wall 56 to the inside. A plurality of roughenings 57 extending from the surface to the inside are formed on the inner wall surface 56 (see FIG. 7).

  When the tip 54 of the drill 13 bites into the inner wall surface 56, the tip 74 (tip) of the metal rod 70 of the air supply valve mechanism 67 contacts the surface of the inner wall 56, and the tip 54 further bites into the inner wall 56. Then, the metal rod 70 moves backward against the bias of the coil spring 71, and the lid 72 moves rearward of the first space 30. As a result, as shown by an arrow L5 in FIG. 18, air flows into the first space 30 through the air supply port 68 of the first support wall 14, and passes through the air supply port 69 of the second support wall 15 to the second. It flows into the space 31. When air flows into the second space 31, the air is supplied to the space 31 that has become negative pressure by the vacuum means 60 (suction device 65), and the negative pressure state of the space 31 is released. When the roughening 57 having a predetermined depth is formed on the inner wall surface 56 (substantially simultaneously with the completion of the roughening 57), the device 10 </ b> D supplies air to the second space 31 by the air supply valve mechanism 67. Since the pressure state is released, the roughening device 10D can be easily separated from the inner wall surface 56.

  After the roughening 57 is formed on the inner wall surface 56, when the trigger 48 of the electric drill 12 is returned, the motor stops, the rotation of the drive shaft 47 stops, and the rotation of the driven shaft 51 (twist drill 13) stops. . The microcomputer of the electric drill 12 outputs a stop command to the control means of the suction device 65 at the same time (at the same time as stopping the electric drill 12). The control means of the suction device 65 stops the suction device 65 in accordance with a command from the microcomputer. After making the roughening 57 on the inner wall surface 56, the roughening device 10D is separated from the inner wall surface 56, and then the device 10D is moved to the location of the inner wall surface 56 where the roughening 57 is formed. The next roughening 57 is formed in 56.

  The roughening device 10D has the following effects in addition to the effects of the devices 10A and 10B shown in FIGS. The roughening device 10 </ b> D sucks air from the second space 31 by the vacuum means 60 (suction device 65), and when the space 31 is set to a negative pressure, the contact portion 63 of the bellows member 59 is adsorbed to the inner wall surface 56. In some cases, air is supplied to the space 31 using the air supply valve mechanism 67 almost simultaneously with the formation of the roughening 57, so that the negative pressure state of the space 31 is released after the formation of the roughening 57. In addition, the contact portion 63 of the bellows member 59 can be easily pulled away from the inner wall surface 56, and the next roughening 57 can be smoothly performed.

  FIG. 19 is a side view of another example of the roughening device 10E shown with the side wall 18 omitted. In FIG. 19, illustration of the suction device 65 is omitted. 8 differs from that shown in FIG. 8 in that a core drill 75 (breaking bit) is used in place of the twist drill 13, and the other configuration is the breaking device 10A shown in FIGS. 10B, the description of the devices 10A and 10B of FIG. 1 and FIG. 8 is cited, and the same reference numerals as those of the devices 10A and 10B are used to explain other configurations of the roughening device 10E. Omitted.

  In addition, the core drill 75 can be used instead of the twist drill 13 in the roughening device 10A in FIG. 1, the roughening device 10C in FIG. 15, and the roughening device 10D in FIG. The roughening device 10E uses a core drill 75 and has a predetermined depth extending from the surface to the interior of the floor surface, outer wall surface, inner wall surface, ceiling surface, column surface, beam surface, etc. of the building in accordance with the procedure described above. A plurality of core roughenings can be formed.

  FIG. 20 is a side view of another example of the roughening device 10F with the side wall 18 omitted, and FIG. 21 is a side view of the composite drill 76 installed in the roughening device 10F. 8 differs from that shown in FIG. 8 in that a composite drill 75 (breaking bit) is used in place of the twist drill 13, and the other configuration is the breaking device shown in FIGS. Since it is the same as 10A and 10B, the description of the devices 10A and 10B of FIG. 1 and FIG. Is omitted.

  1, the roughening device 10C of FIG. 15, and the roughening device 10D of FIG. 17, a composite drill 76 can be used instead of the twist drill 13. In the composite drill 76, two carbide blades 78a and 78b arranged in the radial direction are fixed to a pedestal 77 located at the tip of the drill shaft so as to be detachable. One carbide blade 78 a protrudes forward in the axial direction from the pedestal 77, and its blade tip is inclined from one side surface of the pedestal 77 toward the other side surface. The other carbide blade 78 b protrudes forward in the axial direction from the pedestal 77, and the blade tip is inclined from the other side surface of the pedestal 77 toward one side surface. The roughening device 10F uses the composite drill 76 to extend from the surface to the inside on the floor surface, outer wall surface, inner wall surface, ceiling surface, column surface, beam surface, etc. of the building according to the procedure described above. Multiple depths of depth can be formed.

10A Roughening device 10B Roughening device 10C Roughening device 10D Roughening device 10E Roughening device 10F Roughening device 11 Housing 12 Electric drill 13 Twist drill (Roughening bit)
14 First Support Wall 15 Second Support Wall 16 First Side Wall 17 Second Side Wall 18 Third Side Wall 19 Fourth Side Wall 20 Connecting Wall 21 Fixed Seat 30 First Space 32 Second Space 37 First Fixed Key 38 Second Fixed Key 41 First fixed groove 44 Second fixed groove 46 Bearing 47 Drive shaft 48 Trigger 50 Drive gear (transmission means)
51 driven shaft 54 tip 55 driven gear (transmission means)
56 inner wall surface 57 roughening 58 soundproof member 59 bellows member 60 vacuum means 62 telescopic part 63 abutting part 64 suction hose 65 suction device 67 air supply valve mechanism 68 air supply port 69 air supply port 70 metal rod 71 coil spring 72 lid 73 receiving 74 Tip 75 Core Drill (Roughening Bit)
76 Combined drill (meshing bit)

Claims (14)

In the roughening device for forming the roughening of a predetermined depth extending from the surface of the structure toward the inside,
The roughening device has first and second support walls arranged in the front-rear direction and first to fourth side walls extending forward from the first and second support walls, and upper ends of the first and second support walls. a first space surrounded with the housing, the first and second supporting walls and their side walls and a fixed seat mounted on the rear end portion of the connecting wall and the connecting wall extending backward from parts, the first The second support wall positioned in front of the space, the second space surrounded by the side walls, and a drive shaft rotatably supported by the support walls, disposed behind the first support wall ; An electric drill having a tip detachably fixed to the fixed seat, a plurality of roughening bits having a driven shaft rotatably supported by the support walls and extending to the first and second spaces; Installed rotatably in the first space And a transmission means for transmitting the driven shaft thereof eyes vandalism bit rotation of the drive shaft of the electric drill Te,
In the roughening device, the tips of the roughening bits are exposed forward from the front end opening surrounded by the front end edges of the side walls, and the roughening bits together with the driven shaft are rotated as the drive shaft of the electric drill rotates. The structure of the roughening device is characterized in that the structure is cut from the surface toward the inside by the roughening bit while rotating. In the roughening device for forming the roughening of a predetermined depth extending from the surface of the structure toward the inside,
The roughening device includes a housing having first and second support walls arranged in the front-rear direction, first to fourth side walls extending forward from the first and second support walls, and the first and second support walls. And a first space surrounded by the side walls; a second space positioned in front of the first space; the second space surrounded by the side walls; and a front-rear direction attached to the front edge of the side walls A bellows member that can be expanded and contracted, an electric drill that is disposed behind the first support wall with a drive shaft rotatably supported by the support walls, and a driven shaft that is rotatably supported by the support walls And a plurality of roughening bits extending into the first and second spaces, and a transmission that is rotatably installed in the first space and transmits the rotation of the drive shaft of the electric drill to the driven shafts of the roughening bits. Means and said And a vacuum means for sucking air from the two spaces,
In the roughening device, the bellows member is brought into contact with the surface of the structure, and when the second space is made negative pressure while sucking air from the second space by the vacuum means, The tip of the roughening bit is contracted in the front-rear direction to be exposed forward from the bellows member, and the roughening bit rotates with the driven shaft as the driving shaft of the electric drill rotates. A roughening device for cutting the structure from the surface thereof toward the inside by the above . The housing includes a connecting wall extending rearward from the upper end portions of the first and second support walls, and a fixed seat attached to the rear end portion of the connecting wall so that the tip of the electric drill is detachably fixed. The roughening apparatus of Claim 2 containing . The bellows member has an expansion / contraction part attached to the front end edges of the side walls and folded in the front-rear direction, and a contact part having a predetermined area that contacts the front end edge of the expansion / contraction part and contacts the surface of the structure. 4. The roughening device according to claim 2 , wherein the expandable portion and the contact portion surround a front end opening surrounded by a front end edge of the first to fourth side walls . The vacuum means is formed of a suction hose connected to one of the first to fourth side walls, and a suction device arranged outside the housing and connected to the suction hose, and the air volume of the suction device but the range of 1.5~4.5m ³ / min, the suction work rate of the suction device, roughening device according to claim 4 or to claims 2 is in the range of 150～400W. In the roughening device, the suction device is operated simultaneously with the operation of the electric drill, or the suction device is operated 0.3 to 1.5 seconds after the operation of the electric drill. 6. The roughening device according to claim 5, wherein the operation of the suction device is stopped at the same time as the operation of the suction device is stopped . The roughening device has an air supply valve mechanism for supplying air to the second space, and in the air supply valve mechanism, air is supplied to the second space substantially simultaneously with the formation of the roughening on the structure. The roughening device according to any one of claims 2 to 6, wherein air is supplied . 8. The driven shafts of the roughening bits are arranged at equal intervals in the circumferential direction while being positioned radially outward of the drive shaft around the drive shaft of the electric drill . Destroying device described in 1. The eye vandalism device, roughening device according to any one of claims 1 to claim 8 comprising a soundproof member attached to an inner surface of the first to fourth side walls. The roughening device according to claim 9 , wherein the soundproofing member is attached to a second space between the second support wall and the front end opening . The roughening device according to claim 9 or 10, wherein the soundproof member is any one of felt, rock wool, glass wool, a rubber sheet, and a vinyl chloride sheet having a thickness of 1 to 6 cm . The transmission means includes a drive gear attached to the drive shaft of the electric drill and a driven gear attached to the driven shaft of the roughening bit, and the gear ratio between the drive gear and the driven gear is the driven gear 1 and when the drive gear is 1.2 or more, or, according to the driven gear is 1.2 or more in which one claims 1 to 11 when the driving gear 1 Eye-breaking device.   The roughening device according to any one of claims 1 to 12, wherein the roughening bit is one of a twist drill and a core drill. The roughening device according to any one of claims 9 to 13, wherein a sound pressure level of a cutting sound generated when roughening the surface of the structure by the roughening device is in a range of 50 to 70 dB.

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