JP2005034521A - Wire brush with cap and cap for wire brush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire brush with a reduced a replacing frequency, while improving safety by narrowing a range of scattering of wires in brushing work. <P>SOLUTION: This wire brush 5 rotates the wires 4 together with a holder part 2, by implanting a plurality of wires 4 in the holder part 2. The wire brush is provided with a cap 6 having an annular cover part 8 for surrounding the periphery of the wires 4, and a slide part 9 installed in the holder part 2 in a state capable of moving this annular cover part 8 in the longitudinal direction of the wires 4, to adjust the projecting length of the wires 4 projecting from an end opening part 10 of the annular cover part 8 by moving the cap 6. A tip part expanding range of the wires 4 is regulated by the annular cover part 8. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a wire brush that rotates and uses a plurality of wires.

Some brushes use a rotary type to remove the dirt and foreign matter on the surface by rotating the hair planted in the holder part using the fluid such as water or compressed air together with the holder part and pressing the hair tip against the object to be brushed. There is a brush (see, for example, Patent Document 1).
Rotating brushes with bristles formed of wire, that is, rotating wire brushes, are used to remove strongly stuck dirt and foreign matter such as temper color (coloring due to high temperature) and oxide film generated on the metal surface by welding. Used.
JP 2001-37545 A (page 3, FIG. 1)

  By the way, in order to remove the dirt and foreign matter as described above from the object to be brushed, an operator tends to strongly press the wire brush while rotating the wire. Therefore, stress concentrates on the root portion of the wire. And if it uses repeatedly, it will become easy to bend from the root and will cause fatigue failure. For this reason, there is a possibility that the wire may scatter in a wide range due to rotation, which is very dangerous. Further, the wire is detached from the holder portion after several uses, and sufficient brushing cannot be performed. Therefore, the frequency of wire brush replacement has increased, leaving room for improvement in brushing efficiency.

  Therefore, the present invention has been made in view of the above circumstances, and its purpose is to improve the safety by narrowing the range in which the wire scatters during the brushing operation, and to provide a wire brush that is less frequently replaced. It is something to be offered.

The present invention has been proposed in order to achieve the above object, and in the wire brush according to claim 1, a plurality of wires are implanted in a holder part and the wire is rotated together with the holder part.
A cap is provided that includes an annular cover portion that surrounds the periphery of the wire, and a slide portion that is attached to the holder portion and / or the shaft of the holder portion in a state in which the annular cover portion is movable along the longitudinal direction of the wire,
The cap is moved in the axial direction of the holder part and / or the axis of the holder part to make it possible to adjust the protruding length of the wire protruding from the tip opening of the annular cover part, and the range in which the tip part of the wire expands is annular cover It is a wire brush with a cap characterized by being controlled by a part.

  According to a second aspect of the present invention, the slide portion is formed of a cylindrical member that slides on the outer peripheral surface of the holder portion in a state where the holder portion is housed inside, and an annular cover portion is provided at an end portion of the slide portion. The wire brush with a cap according to claim 1, wherein the wire brush is molded.

According to a third aspect of the present invention, there is provided a wire brush cap in which a plurality of wires are implanted in a holder portion, attached to a wire brush that rotates the wire together with the holder portion, and rotated together with the wire brush,
The cap includes an annular cover portion that encloses the middle in the longitudinal direction of the wire, and a slide portion that attaches the annular cover portion to the holder portion and / or the shaft of the holder portion in a slidable state. This is a brush cap.

  According to the present invention, the protruding length of the wire protruding from the tip opening portion of the annular cover portion by moving the cap can be adjusted, and the range in which the tip portion of the wire expands is regulated by the annular cover portion. Therefore, it is possible to prevent the portion of the wire from the base to the opening of the annular cover portion from expanding, reducing the stress applied to the wire and extending the life of the wire. Also, even if repeated brushing work is performed, only the part from the opening to the tip of the annular cover part of the wire is bent or dropped, and the range in which the dropped wire scatters can be suppressed, thereby improving work safety. Can be improved. And if an annular cover part is moved after the protrusion part of a wire falls, a wire can be made to protrude from an annular cover part again. Therefore, the life of the wire brush can be extended, and the efficiency of the brushing operation can be improved by reducing the replacement frequency.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view of a wire brush 1 with a cap.

  As shown in FIG. 1, the wire brush with cap 1 has a rotating shaft 3 (corresponding to the axis of the holder portion of the present invention) extending from the rear end surface of the cylindrical holder portion 2, and a tip surface (rotating shaft). 3 is composed of a wire brush 5 in which a plurality of wires 4 are implanted, and a cap (wire brush cap) 6 attached to the wire brush 5. The wire brush with cap 1 includes an air tool (air drill, air grinder) that rotates the rotating shaft 3 of the holder portion 2 using an output shaft (not shown) of a rotational drive source, for example, pneumatic pressure of compressed air. Etc.), and the wire 4 can be rotated together with the holder portion 2 and the cap 6.

  The cap 6 is a cylindrical member provided in a state of covering the holder portion 2, the distal end portion of the rotating shaft 3, and the outer periphery of the wire 4 (that is, the wire brush 5). The cap 6 includes an annular cover portion 8 that surrounds the wire 4 and a slide portion 9 that moves the annular cover portion 8 along the longitudinal direction of the wire 4.

  The annular cover portion 8 is a cylindrical portion integrally formed with the end portion on the wire 4 side of the slide portion 9, and is around the root of the wire 4, that is, on the distal end surface (right end surface in the drawing) of the holder portion 2. It extends along the longitudinal direction of the wire 4 from the periphery toward the front. The annular cover portion 8 forms a space in which the wire 4 and the holder portion 2 can advance and retreat in the longitudinal direction. The annular cover portion 8 projects the wire 4 from the distal end opening 10 of the annular cover portion 8 and the distal end portion of the wire 4 projects. It is in the state to do. Further, the annular cover portion 8 is in contact with the distal end opening 10 in the middle portion of the wire 4 in the longitudinal direction, specifically, the middle portion in the longitudinal direction of the wire 4 implanted outside the plurality of wires 4. The range which the front-end | tip part of the wire 4 expands is controlled. In the present embodiment, the annular cover portion 8 is surrounded by the tip opening portion 10 so as to bundle the middle portion of the wire 4, and the tip portion of the wire 4 is more than the annular cover portion 8 before the wire brush with cap 1 is used. However, the range of expansion is restricted so as not to protrude outside.

  The slide part 9 is a cylindrical member having a space in which the holder part 2 can be fitted inside, and the holder 4 is accommodated in the space, and the extending direction of the wire 4 on the outer peripheral surface of the holder part 2 or the holder It is configured to be slidable along the central axis direction of the portion 2. With such a configuration, the slide portion 9 can advance and retract the annular cover portion 8 extending from the end portion on the wire 4 side along the longitudinal direction of the wire 4 together with the slide portion 9.

  Moreover, the slide part 9 forms the stopper 11 on the opposite side to the annular cover part 8 by closing the end part on the rotating shaft 3 side. That is, the slide portion 9 allows the stopper 11 to come into contact with the rear end surface of the holder portion 2 (the end surface on which the rotation shaft 3 is extended), and the cap 6 (that is, the slide portion 9 and the annular cover portion 8). The holder portion 2 is configured not to fall off. In the wire brush with cap 1 of the present embodiment, when the cap 6 is attached to a new wire brush 5 and the stopper 11 is brought into contact with the end of the holder portion 2 on the rotating shaft 3 side, the tip end portion of the wire 4 is predetermined. Is configured to protrude from the annular cover portion 8 by a length (for example, about 10 mm).

  And the cap 6 has opened the slide hole 12 (equivalent to a kind of the slide part 9 of this invention) in which the rotating shaft 3 can be inserted in the disk-shaped stopper 11. FIG. The slide hole 12 is formed to be slidable on the outer peripheral surface of the rotation shaft 3 along the central axis direction of the holder portion 2 in a state where the rotation shaft 3 is passed. That is, when the slide portion 9 moves on the outer peripheral surface of the holder portion 2, the slide hole 12 moves on the outer peripheral surface of the rotating shaft 3 in the same direction as the slide portion 9.

  The cap 6 is assembled to the holder portion 2 with a fit so that there is almost no gap between the cap portion 2 and the cap 6 so that the cap 6 is not displaced during the brushing operation with the wire brush 1 with a cap. Yes. Further, the cap 6 is configured such that the thickness of the slide portion 9 and the annular cover portion 8 is reduced so that the cap 6 is less likely to contact the object to be brushed during the brushing operation.

  In order to use the wire brush 1 with a cap as described above, the rotation shaft 3 of the wire brush 5 is connected to the output shaft of the rotation drive source, the cap 6 is moved forward and backward, and the tip of the wire 4 is moved to the annular cover portion. A desired amount (for example, about 10 mm) protrudes from 8 and is adjusted so that the brushing work can be performed satisfactorily (see FIG. 1A). When the output shaft of the rotational drive source is rotated, the wire brush 5 rotates with the cap 6. At this time, the annular cover portion 8 of the cap 6 abuts the middle portion of the length of the wire 4 to the tip opening portion 10 and restricts the range in which the tip portion of the wire 4 expands. In addition, since the protruding portion of the wire 4 is short and the centrifugal force applied to the protruding portion does not become so great that the wire 4 is bent, the wire 4 is difficult to spread outward. That is, the radius of rotation at the tip of the wire 4 does not expand. Therefore, the stress that the wire 4 receives due to the centrifugal force is not increased, and the life and life of the wire brush 5 can be extended by preventing deformation and fatigue of the wire 4 due to rotation.

  Then, the tip of the rotating wire 4 is pressed against the brushing object (work) 13 to remove dirt and foreign matter from the brushing object 13. At this time, the wire brush 5 receives a reaction force of a force that presses against the object to be brushed. By this reaction force, the wire 4 bends outward at a portion supported by the tip opening 10 of the annular cover portion 8 (see FIG. 1B). In addition, since the wire 4 is supported by the annular cover portion 8 on the base side from the tip opening portion 10, it is difficult to bend.

  Further, if the brushing operation is performed for a long time or repeatedly, the bent portion of the wire 4 is repeatedly loaded and fatigued, and finally the tip of the wire 4 is broken from the bent portion. And the front-end | tip part of the broken wire 4 scatters outside by centrifugal force. However, the broken tip is smaller than the total length of the wire 4. Therefore, the tip of the wire 4 has a narrower range of scattering than when the wire 4 is broken from the base. From this, it is possible to improve safety during work by attaching the cap 6 to the wire brush 5 and performing the brushing work.

  Then, if the tip part falls off and the protruding amount of the wire 4 from the annular cover part 8 is shortened (see FIG. 1C), the cap 6 is retracted, that is, the holder part 2 toward the rotating shaft 3 side. Slide along the axial direction. Then, the wire 4 stored in the annular cover portion 8 emerges from the tip opening portion 10, and the wire 4 can be protruded to the extent that the brushing operation can be satisfactorily performed again (see FIG. 1 (d)). Therefore, even if the tip of the wire 4 falls off, the wire brush 1 with a cap can be used continuously, and it is not necessary to replace it with a new one. For this reason, it is possible to improve the efficiency of the brushing work.

  A female screw hole is formed in the side portion of the cap 6, that is, the side portion of the slide portion 9 or the annular cover portion 8, and a set screw is screwed into the female screw hole (both not shown). If the tip is pressed against the outer peripheral surface of the holder part 2, the cap 6 can be securely fixed to the holder part 2 in a positioned state, and there is no fear that the cap 6 is displaced due to vibration or the like. Therefore, it is preferable that the protruding amount of the wire 4 does not change during the brushing operation and the annular cover portion 8 does not hit the brushing object 13.

  In the above embodiment, the cylindrical cap 6 is attached to the wire brush 5. However, the present invention is not limited to this. For example, as shown in FIG. 2, a cap 14 having an outer peripheral surface so that the cross section is polygonal may be used. Alternatively, the cap 15 having an outer peripheral surface so that the cross section is a gear shape may be used.

  Further, as shown in FIG. 3, the wire brush 5 is attached with a cap 16 having an inner peripheral surface tapered, and the position of the wire brush 5 is stopped by fitting the slide hole 12 to the rotation shaft 3. The cap 16 may be moved along the holder portion 2 by performing a brushing operation or sliding the slide hole 12 in the axial direction on the rotation shaft 3. When such a cap 16 is attached to the wire brush 5, the tip end portion of the wire 4 can be maintained in a state where it is wider than the holder portion 2 when viewed from the axial direction of the holder portion 2, and a wide range of brushing operations are performed. It is suitable for.

  In the above-described embodiment, the slide portion 9 is formed in a cylindrical shape so that the wire brush 5 can be accommodated inside. However, the present invention is not limited to this, and the position of the annular cover portion 8 is moved. As long as the protruding amount of the wire 4 can be adjusted, any configuration may be used. For example, as shown in FIG. 4, a ring-shaped bracket 21 that is detachably fitted to the outer periphery of the holder portion 2, and is attached to the bracket 21 and is slidable along the extending direction of the wire 4. The slide portion 23 may be configured from the slide rod 22, and the cap 24 may be configured by connecting the annular cover portion 8 to the tip of the slide rod 22.

  Also, as shown in FIG. 5, a cylindrical inner cap 26 having a male screw engraved on the outer peripheral surface and a cylindrical outer cap 27 having a female screw engraved on the inner peripheral surface are screwed together to slide the slide portion. 28 may be formed, and the cap 29 may be configured by extending the annular cover portion 8 at the tip of the outer cap 27. When the outer cap 27 is rotated while the holder portion 2 is housed inside the inner cap 26, the cap 29 advances and retreats while the annular cover portion 8 rotates together with the outer cap 27, and the wire protruding from the distal end opening portion 10. The length of 4 can be adjusted. If the outer cap 27 is provided with a detent member so that it can be locked to the inner cap 26 or the holder portion 2, the outer cap 27 does not rotate carelessly during the brushing operation, and the position of the annular cover portion 8 is maintained. This is preferable.

It is the schematic of a wire brush with a cap, (a) is in the state before the tip of the wire is dropped, (b) is in the state during brushing work, (c) is in the state in which the tip of the wire is dropped, (d ) Is a diagram of a state in which the cap is moved. (A) is a cap whose outer peripheral surface forms a hexagon, and (b) is a front view of a cap that forms a gear shape. It is the state figure which attached the cap which formed the inner peripheral surface in the taper shape to the wire brush. (A) is the schematic of the wire brush with a cap of 2nd Embodiment, (b) is the schematic of the wire brush with a cap of 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wire brush with cap 2 Holder part 3 Rotating shaft 4 Wire 5 Wire brush 6 Cap 8 Annular cover part 9 Slide part 10 Tip opening part 11 Stopper 12 Slide hole 13 Brushing object 14 Cap 15 Cap 16 Cap 21 Bracket 22 Slide rod 23 Slide part 24 Cap 26 Inner cap 27 Outer cap 28 Slide part 29 Cap

Claims (3)

In a wire brush in which a plurality of wires are implanted in the holder part and the wire is rotated together with the holder part,
A cap is provided that includes an annular cover portion that surrounds the periphery of the wire, and a slide portion that is attached to the holder portion and / or the shaft of the holder portion in a state in which the annular cover portion is movable along the longitudinal direction of the wire,
The cap is moved in the axial direction of the holder part and / or the axis of the holder part to make it possible to adjust the protruding length of the wire protruding from the tip opening of the annular cover part, and the range in which the tip part of the wire expands is annular cover A wire brush with a cap, characterized by being regulated by a portion.   The slide part is composed of a cylindrical member that slides on the outer peripheral surface of the holder part in a state in which the holder part is housed inside, and an annular cover part is formed at an end part of the slide part. Item 10. A wire brush with a cap according to item 1. A wire brush cap that is implanted with a plurality of wires in a holder part, is attached to a wire brush that rotates the wire together with the holder part, and rotates together with the wire brush,
The cap includes an annular cover portion that encloses the middle in the longitudinal direction of the wire, and a slide portion that attaches the annular cover portion to the holder portion and / or the shaft of the holder portion in a slidable state. Brush cap.

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