JP2012205864A - Rotary brush and work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary brush having a recess and projection part where it is difficult to carry out the desired grinding which easily grinds a workpiece, and to provide a work machine.SOLUTION: The rotary brush 2, which is used by a work machine 1 having a rotary shaft rotating around an axis by a drive source 3, includes a disc which is connectable to the rotary shaft of the working machine 1, and a plurality of brush parts extended outward from a circumferential edge of the disc capable of forming smaller thickness of an outer end than that of an inner end.

Description

  The present invention relates to a rotating brush and a working machine.

  For example, when grinding a material to be ground such as steel or stone, a disc grinder is widely used, and this disc grinder is generally attached to a disc-shaped grindstone and this grindstone via a rotating shaft. A drive source such as a motor is provided. This disc grinder is configured such that when the power switch provided on the outer surface is turned ON, the drive source is driven to rotate the grindstone, and the grindstone thus rotated is brought into contact with the material to be ground. Grinding of the abrasive is performed (for example, Patent Document 1).

JP 2010-269396 A

  However, when grinding a material to be ground having a concavo-convex portion using a disc grinder as described above, a grindstone cannot be inserted into the corner of the concavo-convex portion, and a desired grinding material having a concavo-convex portion is desired. There was a problem that grinding was difficult.

  Then, this invention makes it a subject to provide the rotary brush and working machine with which grinding of the to-be-ground material which has an uneven | corrugated | grooved part is easy.

  A rotating brush according to the present invention is made to solve the above-described problem, and is a rotating brush used in a working machine having a rotating shaft that rotates around a shaft by a drive source, and the rotating shaft of the working machine. And a plurality of brush portions projecting outward from the peripheral edge of the disc.

  The rotating brush includes a plurality of brush portions protruding outward from the peripheral edge of the disk, and even when grinding a workpiece having an uneven portion, the brush portion enters the corner of the uneven portion. Can be made. For this reason, desired grinding can be easily performed even on a material to be ground having an uneven portion.

  In the rotating brush, each brush portion can be configured such that the thickness of the outer end portion is smaller than the thickness of the inner portion of the outer end portion. According to this structure, since the outer edge part of a brush part can be entered in the corner of the uneven | corrugated | grooved part in a to-be-ground material, the to-be-ground material which has an uneven | corrugated | grooved part can be ground more easily.

  Moreover, each said brush part may be comprised so that the thickness direction center part may protrude in an outer side edge part. Also in this case, since the outer end portion of the brush portion can be inserted into the corner of the uneven portion in the material to be ground, the material to be ground having the uneven portion can be more easily ground.

  Moreover, each said brush part can be comprised by several brush hair, an adhesive agent can be apply | coated over the whole brush hair of each brush part, and this brush hair can also be mutually adhere | attached. According to this structure, in each brush part, the reduction | decrease of an outer side edge part can be made uniform, and durability can be improved.

  In the rotating brush, the disk has a plurality of first regions to which the brush portion is attached and a plurality of second regions to which the brush portion is not attached. The first region and the second region are circular. You may arrange | position alternately along the circumferential direction of a board. According to this structure, since a brush part is not provided over the whole peripheral part of a disc, the resistance which a disc and a working machine receive from a to-be-ground material can be reduced.

  Moreover, the through-hole may be formed in the disc in the said rotating brush. According to this configuration, it is possible to reduce the air resistance when the disk rotates.

  The rotating brush may further include an attachment portion to which the brush portion is attached and removably fixed to the disk by a fastening member. According to this configuration, for example, when the brush portion is damaged, the brush portion can be replaced as necessary.

  The working machine according to the present invention includes a rotating shaft, a drive source for rotating the rotating shaft around the axis, and any of the above-described rotating brushes connected to one end of the rotating shaft.

  The working machine includes any one of the rotating brushes described above, and the brush portion of the rotating brush can enter the corner of the uneven portion of the material to be ground, so that the material to be ground having the uneven portion can be easily obtained. Can be ground.

  According to the present invention, it is possible to easily grind a material to be ground having an uneven portion.

1 is a perspective view of a grinder according to a first embodiment of the present invention. It is a top view of the rotating brush which concerns on 1st Embodiment of this invention. It is a top view of the disc of the rotating brush concerning a 1st embodiment of the present invention. It is the (a) side sectional view and (b) front sectional view of the brush part of the rotating brush concerning a 1st embodiment of the present invention. 1 is a partial schematic view of a grinder according to a first embodiment of the present invention. It is a perspective view of the brush cutter which concerns on 2nd Embodiment of this invention. It is a top view of the rotating brush which concerns on 2nd Embodiment of this invention. It is a top view of the disc of the rotating brush which concerns on 2nd Embodiment of this invention. It is a partial schematic diagram of a brush cutter according to a second embodiment of the present invention. It is a top view of the rotating brush which concerns on the modification of the said 2nd Embodiment. It is a side view of the attaching part which concerns on the modification of the said 2nd Embodiment. It is side surface sectional drawing of the brush part of the rotating brush which concerns on the modification of the said 1st and 2nd embodiment. It is a side view of the attaching part which concerns on the modification of the said 1st and 2nd embodiment.

(First embodiment)
Hereinafter, a working machine and a rotating brush according to a first embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the grinder (work machine) 1 according to the first embodiment includes a first rotating brush 2 and a first drive source 3, and an output shaft of the first drive source 3 is provided. Is connected to a first rotating shaft 4 to be described later. The grinder 1 has a power cord 5 for obtaining power from an external power source (not shown) connected to the rear end portion, and a power switch (not shown) for starting the first drive source 3 on the outer surface. (Omitted) is provided.

  As shown in FIG. 2, the first rotating brush 2 includes a first disc 21 and a plurality of brush portions 22 that protrude outward from the peripheral portion of the first disc 21. The first disc 21 has a connecting hole 211 formed in the center for connection to a second rotating shaft 6 to be described later, and a brush portion 22 is provided at the periphery as shown in FIG. A plurality of first mounting holes 212 for mounting and a plurality of second mounting holes 213 for mounting a wire 222 to be described later are formed. In addition, although it does not specifically limit, For example, the diameter of the 1st disc 21 can be 5-8 cm, and the length of the brush part 22 can be 2-3 cm. Further, the number of the brush portions 22 can be appropriately changed according to the size of the first disc 21 and the brush portion 22. The material of the first disc 21 is not particularly limited. For example, iron or reinforced plastic can be used, and when the material of the first disc 21 is reinforced plastic, the first disc 21 is first. The brush portion 22 can be embedded in the disc 21.

  The plurality of brush portions 22 are composed of brush hairs having substantially the same length, and the brush hairs are inserted into the first attachment holes 212 of the first disc 21 and bent at the positions of the first attachment holes 212. ing. As a result, as shown in FIG. 4A, in the brush portion 22, the bristle at the central portion in the thickness direction protrudes, and the thickness T1 of the outer end portion is smaller than the thickness T2 of the inner portion. In addition, inclined surfaces 221a and 221b are formed at the upper and lower portions in the thickness direction. In addition, each brush portion 22 has a base end portion fixed to the first disc 21 by a wire 222, and is preferably pressed from above and below. As a result, as shown in FIG. 4B, each brush portion 22 spreads in the width direction, and the wire 222 is deformed into an approximately 8 shape with the central portion in the thickness direction being constricted. 222 is firmly bound. When an adhesive is applied over the entire bristles of each brush portion 22 in this state, the brush bristles adhere well to each other to form a single cutting edge, and the thickness of the deformed wire 222 The central portion in the direction adheres firmly to the first disc 21.

  Although it does not specifically limit as an adhesive agent apply | coated to each brush part 22, For example, what mixed the polyester resin and the hardening | curing agent can be used, More specifically, as polyester resin, Examples of the curing agent such as Polylite 123 (manufactured by DIC Corporation) and Rigolac NS-159BQTN (manufactured by Showa Denko KK) include Parmec N (manufactured by NOF Corporation). Although it does not specifically limit as a concrete usage method of such an adhesive agent, For example, polylite 123 (made by DIC Corporation) and permec N (made by NOF Corporation) are applied to each brush part 22 whole. After the application, Rigolac NS-159BQTN (manufactured by Showa Denko KK) and Parmec N (manufactured by NOF Corporation) can be applied to the base end portion of each brush portion 22.

  The bristles of each brush portion 22 are not particularly limited, but are usually formed to have a diameter of 0.5 to 2.0 mm and include abrasive yarn containing filament yarn or abrasive / resin composite filament yarn. Is preferred. When the brush bristles include filament yarns containing abrasive grains or abrasive / resin composite filament yarns, they can be covered with a multifilament impregnated with resin. This cover ring can take various configurations. For example, a multifilament knitted braid may cover a filament yarn containing abrasive grains or an abrasive / resin composite filament yarn, The filament yarn containing abrasive grains or the abrasive / resin composite filament yarn may be covered by winding the multifilament in the same direction or different directions.

  Further, as shown in FIG. 5, the first rotating brush 2 is connected to the first drive source 3 via the first rotating shaft 4 and the second rotating shaft 6. The second rotating shaft 6 is formed with a screw thread or a screw hole at the lower end, and the lower end is inserted into the connecting hole 211 of the first rotating brush 2, and from the lower surface side of the first rotating brush 2. The first rotating brush 2 is fixed to the second rotating shaft 6 by tightening with a nut or a bolt. A first bevel gear mechanism 7 is provided between the second rotating shaft 6 and the first rotating shaft 4, and this first bevel gear mechanism 7 is rotated in the direction of rotation of the first rotating shaft 4. Is converted to 90 degrees and transmitted to the second rotating shaft 6 to rotate the second rotating shaft 6 around the vertical axis. With such a configuration, when the first rotation shaft 4 is rotated by the first drive source 3, the second rotation shaft 6 is rotated around the vertical axis, and the first rotary brush 2 is rotated around the vertical axis. To do.

  Next, the usage method of the grinder 1 mentioned above is demonstrated.

  First, the power cord 5 is connected to an external power source (not shown), the power switch (not shown) is turned on, and the first drive source 3 is started. As a result, the first rotating shaft 4 connected to the output shaft of the first drive source 3 rotates, and the rotation of the first rotating shaft 4 is rotated around the vertical axis by the first bevel gear mechanism 7. It is converted and transmitted to the second rotating shaft 6. Then, the rotation of the second rotating shaft 6 is transmitted to the first rotating brush 2, and the first rotating brush 2 rotates around the vertical axis. When the brush portion 22 is brought into contact with the material to be ground while the first rotating brush 2 is rotated in this way, the surface of the material to be ground is ground by the brush portion 22.

  Thus, since the grinder 1 of 1st Embodiment is comprised so that a to-be-ground material may be ground with the brush part 22, even if the to-be-ground material has an uneven | corrugated | grooved part, it is in the corner of this uneven | corrugated | grooved part. The brush part 22 can be inserted and desired grinding can be performed easily. In the grinder 1, since the brush portion 22 has the inclined surfaces 221a and 221b, even if the material to be ground has an inclined surface, the inclined surfaces 221a and 221b are brought into contact with the inclined surface to be covered. The abrasive can be ground uniformly. Furthermore, since both the inclined surfaces 221a and 221b in the first rotating brush 2 can be used for grinding the material to be ground, this is advantageous in terms of cost.

(Second Embodiment)
Hereinafter, a working machine and a rotating brush according to a second embodiment of the present invention will be described with reference to the drawings. In addition, about the structure same as the said 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 6, the brush cutter (working machine) 10 according to the second embodiment includes a second rotating brush 20, a second drive source 101, and an operation tube 102, and the operation tube 102. Inside, a third rotating shaft 103 connected to the output shaft of the second drive source 101 is provided. Further, the brush cutter 10 includes a handle 104 for operating the direction of the operation tube 102, a throttle trigger 105 for starting the second drive source 101, a shoulder band 106 hung on the user's shoulder, It has.

  As shown in FIG. 7, the second rotating brush 20 includes a second disk 201 and a plurality of brush portions 22. The second disc 201 has a plurality of first regions 2013 to which the brush portion 22 is attached and a plurality of second regions 2014 to which the brush portion 22 is not attached. The regions 2013 and 2014 are alternately arranged along the circumferential direction of the second disc 201. As shown in FIGS. 7 and 8, the second disc 201 is preferably formed with a plurality of through holes 2012 for reducing air resistance during use. A connection hole 2011 for connection to the rotating shaft 107 is formed.

  As shown in FIG. 9, the second rotating brush 20 is connected to a fourth rotating shaft 107, and the rotation of the third rotating shaft 103 is transmitted through the fourth rotating shaft 107. Specifically, the rotation direction of the third rotating shaft 103 is converted by the second bevel gear mechanism 108 and transmitted to the fourth rotating shaft 107, and the fourth rotating shaft 107 and the first rotating brush 2 are vertically moved. Rotate around an axis. In addition, about the connection method of the 1st rotating brush 2 and the 4th rotating shaft 107, since it is the same as the connecting method of the 1st rotating brush 2 and the 2nd rotating shaft 6 in 1st Embodiment, it demonstrates. Omitted.

  Next, the usage method of the brush cutter 10 mentioned above is demonstrated.

  First, the shoulder band 106 is slanted from the shoulder opposite to the dominant hand so that the operation tube 102 is arranged on the dominant hand side, and the second trigger 101 is started by pulling the throttle trigger 105. As a result, the third rotating shaft 103 in the operation tube 102 rotates, and the rotation of the third rotating shaft 103 is transmitted through the second rotating bevel gear mechanism 108 and the fourth rotating shaft 107 to the second rotating brush 20. The second rotary brush 20 rotates around the vertical axis. Then, by operating the handle 104 to move the second rotating brush 20 on the work surface, weeds grown on the work surface are cut off by the brush portion 22.

  Thus, the brush cutter 10 of 2nd Embodiment is comprised so that weeds may be cut off by the brush part 22, and this brush part 22 is the joint of an interlocking block pavement surface, a road surface, and a curb block. Since it is difficult to damage even if it touches a gap in the work surface such as the boundary of the work surface, it can also be used when weeds growing in the gap in the work surface are removed.

  In the second embodiment, the first region 2013 to which the brush portion 22 is attached and the second region 2014 to which the brush portion 22 is not attached are along the circumferential direction of the second disc 201. Although it was arranged alternately, it is not limited to this, for example, the brush part can be attached over the entire peripheral part of the disk, and the brush part is attached only to a part of the peripheral part of the disk. It can also be attached.

  Moreover, in the said 2nd Embodiment, although the brush part 22 was directly attached to the 2nd disc 201, as shown in FIG.10 and FIG.11, via the 1st attachment part 11 which can be attached or detached. And may be attached to the second disc 201. The first mounting portion 11 is formed with a plurality of third mounting holes 111, and the third mounting holes 111 are formed in the same manner as the mounting of the brush portion 22 to the second disc 201 in the second embodiment. The brush part 22 is attached via And this 1st attaching part 11 is fixed on the 2nd disc 201 with the volt | bolt 112 and the nut 113 (fastening member). Thus, if the brush part 22 can be attached and detached by using the first attachment part 11, the brush part 22 can be exchanged according to the place of use and the like, and the brush part 22 is damaged. Also, the brush portion 22 can be replaced.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to these, A various change is possible unless it deviates from the meaning of this invention. For example, in the above embodiment, each brush portion 22 is configured such that the brush hair at the center in the thickness direction protrudes, but as shown in FIGS. 12 (a) and 12 (b), the upper portion in the thickness direction. Alternatively, by projecting the lower bristle, the thickness T1 of the outer end portion can be made smaller than the thickness T2 of the inner portion. In addition, the thickness of each brush part 22 may be substantially uniform over each brush part 22 whole.

  Moreover, the rotating brush which concerns on this invention can be used for various uses, such as paint peeling, rust removal, cleaning of a concrete formwork decorative board, or removal of scale. When the rotating brush of the present invention is used for cleaning the concrete formwork decorative plate, as shown in FIG. 13, the bolts 122 and the nuts 123 are used for the first circle through the second mounting portion 12 having an L-shaped vertical section. You may attach the brush part 22 to the lower surface of the board 21 or 201 further. In addition, the rotary brush which concerns on this invention can change suitably dimensions, such as the diameter of a disc, and the length of a brush part, according to the use, for example.

DESCRIPTION OF SYMBOLS 1, 10 Working machine 2, 20 Rotating brush 21, 201 Disc 211 Through-hole 22 Brush part 3, 101 Drive source 4, 6, 103, 107 Rotating shaft 11 Mounting part 112, 113 Bolt and nut (fastening member)

Claims (8)

A rotating brush used in a working machine having a rotating shaft that rotates around an axis by a driving source,
A disc connectable to the rotating shaft of the work implement;
A plurality of brush portions protruding outward from the peripheral edge of the disc;
A rotating brush.   The rotating brush according to claim 1, wherein each brush portion has a thickness of an outer end portion smaller than a thickness of an inner portion of the outer end portion.   The rotating brush according to claim 1, wherein each brush portion has a central portion in the thickness direction protruding at an outer end portion. Each brush part is composed of a plurality of brush hairs,
The rotary brush according to any one of claims 1 to 3, wherein the brush bristles of each of the brush portions are adhered to each other by applying an adhesive throughout. The disc has a plurality of first regions to which the brush portion is attached and a plurality of second regions to which the brush portion is not attached,
5. The rotating brush according to claim 1, wherein the first regions and the second regions are alternately arranged along a circumferential direction of the disk.   The rotary brush according to claim 1, wherein the disc has a through hole.   The rotating brush according to any one of claims 1 to 6, further comprising an attachment portion to which the brush portion is attached and removably fixed to the disk by a fastening member. A rotation axis;
A driving source for rotating the rotating shaft around the axis;
The rotating brush according to any one of claims 1 to 7, which is connected to one end of the rotating shaft,
A working machine equipped with.

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