JPH11235673A - Sand paper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely catch grinding waste ground with sand paper within a hollow cover body, cleanly and sanitarily hold working environments, make a grinding operation easy to be performed, make the whole of a device light in weight, make workability excellent without making the fingers gripping a handle part tired, simplify the structure of the device and make manufacturing cost inexpensive. SOLUTION: This device has a hollow cover body 14 in which a surface opposed to a grinding surface is opened 12, a sand paper holder 18 which is arranged within the opening 12 and on which sand paper 16 is attachably/ detachably mounted and a handle part which is mounted on the sand paper holder 18. The sand paper holder 18 is normally energized and arranged from the opening 12 to a retreating location and the device is provided with an elastic energizing and supporting means 22 which is pressed to the side of the opening 12 at the time of a grinding work and is moved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sandpaper apparatus for smoothly polishing putty or the like which has been filled and solidified in joints or holes of a base material such as a wall surface or a ceiling surface of a building.

[0002]

2. Description of the Related Art Conventionally, in the interior finishing work of a building, in the surface finishing such as cloth or paper coating on a base material such as a wall surface or a ceiling surface, or in the painting or the like, a base material such as a gypsum board is used. After polishing the surface of the putty etc. to the same smooth surface as the base material with sandpaper, to prevent the unevenness of the putty etc. filled and solidified in the seams and holes etc. from appearing on the surface finish surface and reducing the aesthetic appearance Surface finish. In this sandpaper holder, as shown in FIG. 3, a sandpaper provided with a hook-and-loop fastener on the lower surface of a holder 210 having a handle 200 fixed to the upper surface, and with another hook-and-loop fastener removably joined to the hook-and-loop fastener on the holder side. 2
20 is attached to the holder 210. During the polishing operation, the user grips the handle 200 to apply the sandpaper 220 on the lower surface of the holder 210 to a polishing surface such as a wall surface or a ceiling surface for polishing.

[0003] In this polishing work, a worker is exposed to polishing debris on the whole body such as the head and face, and the eyes, nose, mouth and the like are contaminated with dust, so that the working environment is poor. In addition, the polishing debris easily enters the seam of the floor surface or the upper part of the baseboard between the floor surface and the wall surface, and it is difficult to remove these polishing debris. Therefore, in recent years, in order to prevent the polishing dust from floating in the air at the work site, a suction device such as a vacuum cleaner is mounted on a case body in which a holder is disposed substantially flush with an opening facing the polishing surface. A suction hose is connected, and while holding the case body and pressing the sandpaper engaged with the holder against the polishing surface, the polishing dust is sucked into the case body through the gap between the opening and the sandpaper holder, and further suctioned to the suction hose. Polishing machines have been proposed.

[0004]

However, since the holder surface of the sandpaper is disposed on the substantially same plane within the opening edge of the case body and the gap between the opening edge of the case body and the sandpaper holder is also narrow, the sandpaper is not provided. The polishing dust polished by the method cannot be reliably sucked and captured in the case body. Further, during the operation, the case body is restrained by the suction hose, so that the moving operation of the case body cannot be performed smoothly, so that there is a problem that the workability of the polishing operation is low.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and one of its objects is to reliably capture and accommodate polishing debris in a hollow cover when polishing a polishing surface with sandpaper, thereby improving the working environment. Is to provide a sandpaper device that can maintain the water in a clean and sanitary manner. Another object of the present invention is to not connect a suction hose to the hollow cover body,
An object of the present invention is to provide a sandpaper device that can easily perform a polishing operation while holding a hollow cover body and can reliably polish a wall surface, a ceiling surface, and the like. Further, another object of the present invention is to provide a sandpaper apparatus which is excellent in workability without the hand holding the gripping part being tired because the whole apparatus is lightweight. It is another object of the present invention to provide a sandpaper device that has a simple structure and therefore has a low manufacturing cost.

[0006]

In order to achieve the above-mentioned object, the present invention provides a hollow cover body 14 having a surface opposite to a polishing surface having an opening 12 and a sandpaper 16 which is disposed in the vicinity of the opening 12 and which is detachable. It has a sandpaper holder 18 freely mounted, and a grip portion 20 attached to the sandpaper holder 18. The sandpaper holder 18 is normally urged to the retracted position from the opening 12 and at the time of polishing work. It comprises a sandpaper device 10 provided with elastic biasing support means 22 for pressing and moving toward the opening 12 side.

The elastic biasing support means 22 includes a biasing member 36 interposed between the sandpaper holder 18 and the hollow cover body 14 and a range corresponding to the opening 12 of the sandpaper holder 18. And a movement range regulating means 38 for regulating the movement range.

[0008] The movement range restricting means 38 may be composed of a cable 42.

The hollow cover body 14 has an opening 12 at the surface facing the polishing surface, and the handle portion 20 protrudes and can be pressed and moved toward the opening 12 side. May consist of an airtight box closed in an airtight manner.

An elastic member 50 is provided on the peripheral edge of the hollow cover body 14 on the side of the opening 12 so as to be able to airtightly adhere to the polished surface.
May be stretched.

Further, a rolling element 52 which can be smoothly moved in a pressed manner against the polishing surface may be provided on the periphery of the hollow cover body 14 on the opening 12 side.

The hollow cover body 14 is provided between the lightweight bone frame 54 and the sandpaper holder 18 provided so as to be relatively movable from the lightweight bone frame 54 to the lightweight bone frame 54. And the covering material 56.

Further, the lightweight bone frame 54 to the lightweight bone frame 5
The coating material 56 interposed between the sandpaper holder 18 and the sandpaper holder 18 movably provided to the cover 4 may be detachably mounted.

A receiving portion 72 for polishing dust is provided in the hollow cover body 14, and one end of the opening 12 captures polishing dust generated by polishing operation and receives the receiving portion 72.
An introduction unit 74 for introducing the gas into the air may be provided.

The elastic biasing and supporting means 22 is interposed between the hollow cover body 14 and the sandpaper holder 18, and connects the sandpaper holder 18 to the opening 12.
Bellows body 76 provided to be held at substantially the center position of
It may be composed of

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A sandpaper device according to the present invention comprises a hollow cover body having an open surface facing a polishing surface;
A sandpaper holder, which is disposed in the vicinity of the opening and to which a sandpaper is detachably mounted, and a handle attached to the sandpaper holder, and constantly biases the sandpaper holder to a retracted position from the opening. It is provided with elastic biasing support means for disposing and pressing and moving toward the opening during the polishing operation.

The elastic biasing support means is interposed between the sandpaper holder and the hollow cover, and elastically supports the sandpaper holder at a position retracted from the opening side of the hollow cover to the inside. A movement range regulating means for regulating the movement range of the sandpaper holder to a range corresponding to the opening of the hollow cover body is provided. The elasticity urging support means always causes the sandpaper holder to elastically urge and support at a position retracted from the polishing surface side, and presses the holder against the polishing surface (wall side) during polishing, and moves along the wall in that state. When the pressing force is released during the polishing process and the hollow cover body is pressed in close contact with the polishing surface, only the internal sandpaper holder is opened with the elastic force, or from the polishing surface. Retract to the retracted position. As a result, when the sandpaper held by the holder moves away from the polishing surface with the retreat of the holder, the polishing debris is captured in the hollow cover body in a close contact state.
The urging member may be any member that can be stretched from the sandpaper holder into the hollow cover and can elastically support the sandpaper holder within the hollow cover. Preferably, the biasing body is a coil spring. The urging member may be, for example, a leaf spring, rubber, or the like.

The moving range restricting means is capable of holding the sandpaper holder so as not to be displaced from within the opening when the sandpaper holder is moved against the polishing surface by pressing the sandpaper holder against the polishing surface against the elasticity of the urging body. Should be fine. The rope constituting the moving range restricting means is preferable. The cable is preferably a wire, a rope, or the like stretched from the sandpaper holder to the hollow cover body. When the sandpaper holder is pressed and moved to the polishing surface during the polishing operation, the sandpaper holder is not displaced from within the opening of the hollow cover body, and the effectiveness of the polishing operation can be ensured.

Preferably, the hollow cover body is a rectangular body having a rectangular shape in plan view with an open lower surface. In addition, the upper surface of the box is inclined diagonally downward toward the advancing side so that it is easy to perform the operation of gripping the gripper of the sandpaper holder protrudingly arranged on the upper surface side of the central part and moving it back and forth in the longitudinal direction of the box. You should let it. Further, the hollow cover body is not limited to a rectangular shape in plan view, but may be, for example, a circular, square, hexagonal or other polygonal shape.

The sandpaper holder is provided with a holding plate having a width narrower than the opening of the hollow cover body and having a shape approximately similar to the opening, and a plate-like holding portion protruding from the upper surface side. Further, a sandpaper is detachably attached to the lower surface of the holding plate by attaching and detaching means such as a hook-and-loop fastener. The grip portion is not limited to a plate shape, and may be an arc-shaped or L-shaped shaft. In addition, a plurality of round holes, long holes, and the like for taking in polishing debris may be formed in the pressing plate and the sandpaper of the sandpaper holder.

The hollow cover body has an opening on the surface facing the polishing surface, and the handle portion protrudes and can be pressed against the opening side to be movable. In addition, the airtightness other than the opening portion is hermetically closed. It may be made of a box. A grip hole is provided on the upper surface side of the hollow cover body to make it easier to grip the gripping part on the upper surface side of the hollow cover body, and cloth, film, etc. are attached in an airtight manner to the grip hole and the holding plate of the sandpaper holder. It is preferred to do so. In addition, an upper surface plate in which the upper surface of the hollow cover body is closed is provided, a hole is provided in the upper surface plate so that the gripper can be vertically moved, and a gap between the hole and the gripper is air-tightly held by an elastic sealing material. Is also good.

Further, an elastic member which can be in close contact with the polished surface in an airtight manner may be stretched around the periphery of the hollow cover body on the opening side. An elastic member is adhered to a peripheral plate that is wrapped around the opening along the peripheral edge of the opening. As the elastic member, for example, felt, sponge, rubber, brush, or the like is preferable. By providing this elastic member, the gap between the peripheral edge of the opening of the hollow cover body and the polishing surface can be closed by the elastic member, and polishing dust polished in the opening of the hollow cover body does not flow out of the cover body.

Further, a rolling element which can be smoothly moved in a pressed manner against the polishing surface may be provided on a peripheral edge of the hollow cover body on the opening side. At a position near both ends of the peripheral plate in the longitudinal direction of the opening, a part of the elastic member is cut out, and a hole or the like is provided at this position to support the rolling element. Further, a rolling element may be supported on the inner surface side of the peripheral plate. As this rolling element,
Small wheels such as free wheels, rollers and rollers are preferred. The rolling element can be brought into contact with the polishing surface to move back and forth through the opening of the hollow cover body without resistance to the polishing surface.

Further, the hollow cover body includes a lightweight bone frame,
A coating material interposed between the lightweight bone frame and a sandpaper holder provided so as to be relatively movable with respect to the lightweight bone frame. Light bone frame
Rods and pipes made of light metal, hard synthetic resin, etc.
It is assembled in an underframe shape with an opening on the lower surface using an angle material or the like.
This underframe may be configured to be freely disassembled and assembled. A sandpaper holder is inserted and arranged in the underframe, and the covering material is coated on the sandpaper holder from the trunk side surface of the underframe via the upper surface. As the covering material, cloth, nonwoven fabric, film and the like are preferable.

[0025] The covering material interposed between the lightweight bone frame and a sandpaper holder movably provided to the lightweight bone frame may be detachably mounted. . The side and top surfaces of the assembled lightweight bone frame,
A plurality of engaging members are provided at a plurality of locations of the sandpaper holder and the corresponding inner surface of the covering material so as to be detachably covered. As the locking tool, for example, a snap, a hook-and-loop fastener and the like which are engaged with each other are preferable. Since the covering material can be removed, cleaning, cleaning, etc. of the polishing debris attached to the covering material, the lightweight bone frame, and the like can be easily performed. In addition, maintenance inspection,
Maintenance such as repair is also simplified.

A receiving portion for polishing dust is provided in the hollow cover body, and an introduction portion is provided at one end side in the opening for capturing the polishing dust generated in the polishing operation and introducing it into the receiving portion. It may be that. The hollow cover body is preferably provided with a receiving portion for polishing dust in a space at one end portion on the retreating side in a direction of moving the polishing surface forward and backward for the polishing operation. A discharge cylinder is provided on the side wall plate on the receiving portion side, and a lid is attached. In the receiving portion, an introduction portion is installed on the opening side from the side wall plate to the opening side obliquely downward. Preferably, the introduction is brushy. When the hollow cover body advances with respect to the polishing surface, the polishing debris can be captured from the polishing surface by the brush of the introduction portion and stored in the receiving portion. Further, the introduction portion may be a plate piece.

[0027] The elastic biasing support means may comprise a bellows body interposed between the hollow cover body and the sandpaper holder, and provided to hold the sandpaper holder at a substantially central position of the opening. It may be. The bellows body is provided with a handle portion from an upper width plate provided substantially horizontally around an inner peripheral edge on an upper end side of a side wall plate provided on an edge plate of the opening to a holding plate of a sandpaper holder disposed in the hollow cover body. It is better to go around and stretch. This bellows body
It is made of cloth, nonwoven fabric, leather, thin metal plate, or the like, and has elasticity in the vertical direction. The sandpaper holder can be easily and elastically supported at the approximate center position of the opening of the hollow cover body only by the bellows body, and the sandpaper holder can be held at the approximate center position of the opening even when the sandpaper is slid in a pressing manner against the polishing surface. .

[0028]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a first embodiment according to the present invention.
Perspective explanatory view of the main part on the bottom side of the sandpaper device is shown,
FIG. 2 is a perspective explanatory view of a main part of the side surface.
The first sandpaper device 10a according to the embodiment includes a hollow cover body 14 having an opening 12 facing the polishing surface, a sandpaper holder 18 disposed in the opening 12 and having a sandpaper 16 detachably mounted thereon, A handle portion 20 attached to the sandpaper holder 18. Further, the sandpaper holder 18 is always provided with a biasing position from the opening 12 to the retracted position, and is provided with resilient biasing support means 22 for pressing and moving the sandpaper holder 18 toward the opening 12 during the polishing operation.

As shown in FIGS. 1 and 2, the hollow cover 1
4 is made of a hard synthetic resin plate, a metal plate, a wooden plate, or the like,
It is formed in a box having a rectangular shape in plan view. That is, a rectangular opening 12 and a peripheral plate 24 which is arranged in a strip shape around the opening 12 so as to be in contact with the polishing surface are provided upright.
A side wall plate 26 slopingly inclined downward from one end side to the other end side in the longitudinal direction of the opening 12, and a top width plate provided substantially horizontally around an inner peripheral edge on the upper end side of the side wall plate 24. 27 are formed in a long box shape. Further, a sandpaper holder 18 described later is provided on the upper surface side of the hollow cover body 14.
And a long gripping hole 28 for gripping the handle 28 from outside is provided. That is, as a whole, the opening 12 is directed toward the polishing surface, the portion of the opening 12 is used as a polishing portion, and other than this opening, the hollow container body or the box body which faces the opening downward or toward the polishing surface. Is configured as In order to provide the holding hole 28, an inner wall plate 30 is suspended from the inner peripheral edge of the three-way upper width plate 27 except for the lower upper width plate 27 at one end to the height of the lower upper width plate 27. I have.

The sandpaper holder 18 is made of a rigid metal plate, a hard synthetic resin plate, a wooden plate, or the like, and is a rectangular pressing plate (support plate) that is narrower than the opening 12 of the hollow cover body 14 and approximately approximated. 32, and a plate-shaped handle portion 20 which is provided upright on the upper surface of the pressing plate 32 in the longitudinal direction thereof and has an insertion hole 34 for a fingertip. A hook-and-loop fastener (not shown) is provided on the lower surface side of the holding plate 32, and the sandpaper 16 provided with a hook-and-loop fastener that is engaged with the hook-and-loop fastener is detachably mounted.

As shown in FIGS. 1 and 2, the sandpaper holder 18 is disposed in the hollow cover body 14,
The pressing plate 32 is normally biased to the retreat position from the opening 12 and is supported by the elastic biasing support means 22 so that the pressing plate 32 can be pressed and moved toward the opening 12 during the polishing operation. That is, the elastic biasing and supporting means 22 normally elastically biases and supports the sandpaper holder at a position retracted from the polishing surface side, and holds the sandpaper holder at the polishing surface (wall side) during polishing.
While moving along the wall in that state to polish, and when the pressing force is released during the polishing process, the hollow cover body is pressed tightly against the polishing surface, and only the internal sandpaper holder is held. Is retracted to the retracted position from the opening or polished surface by the elastic biasing force. As a result, when the sandpaper held by the holder moves away from the polishing surface with the retreat of the holder, the polishing debris is captured in the hollow cover body in a close contact state. In the embodiment, during the polishing operation in which the opening 12 of the hollow cover body 14 is applied to the polishing surface, and the sandpaper on the lower surface side of the holding plate 32 of the sandpaper holder 18 is pressed and moved to the polishing surface,
For example, the pressing of the presser plate 32 is released, and the presser plate 32 is retracted from the opening to the retracted position by the urging body 36 of the elastically urging support means. At this time, since the outer edge portion of the hollow cover body is kept pressed against the polishing wall surface in close contact, polishing dust generated by the polishing operation is smoothly taken into the hollow cover body.

The elastic biasing support means 22 includes a biasing body 36 interposed between the sandpaper holder 18 and the hollow cover body 14 and a movement for restricting a moving range to a range corresponding to the opening 12 of the sandpaper holder 18. Range control means 38
And When the sandpaper 16 on the lower surface side of the holding plate 32 of the sandpaper holder 18 is pressed against the polishing surface and polished, the movement range restricting means 38 does not allow the sandpaper holder 18 to deviate from the opening, that is, the sandpaper from the opening. So hold. An urging body 36 is interposed between the sandpaper holder 18 and the hollow cover body 14, and these movement range restricting means 38 and the urging body 36 constitute an elastic urging support means.

In the embodiment, the urging member 36 is
There are provided four coil springs 40 extending upward from the upper surfaces of the four corners 2 to the lower end of the inner side wall plate 30 of the hollow cover body 14. Further, the movement range regulating means 38 is
A wire 42 such as a wire or a string is provided extending from the upper surface of each of the four corners 2 to the connecting portion of each side wall plate 26 on the four corners of the opening 12. Thus, the gripper 20 of the sandpaper holder 18 is gripped and the sandpaper 16 on the lower surface of the holding plate 32 is held.
Is pressed from the inner side of the hollow cover body 14 to the polishing surface and polished, the pressing plate 32 positioned at the approximate center of the opening 12 by the plurality of cords 42 is displaced from the opening 12 in the polishing direction. And the polishing operation of the polishing surface can be performed continuously and reliably. During the polishing operation, the pressing of the sandpaper holder 18 is temporarily stopped, and the pressing plate 32 is stopped.
The sandpaper 16 on the lower surface is retracted from the surface of the opening 12 into the hollow cover body 14 so that the polishing debris can be efficiently taken in and accommodated in the hollow cover body 14, and the polishing operation can be effectively performed.

The hollow cover body 14 has an opening 12 on the surface facing the polished surface, and the handle 20 is
4, which can be moved by pressing the handle portion 20 toward the opening 12 while holding the handle portion 20. Further, a stretchable cloth 44 that can expand and contract up and down from the upper surface of the holding plate 32 of the sandpaper holder 18 around the handle 20 to the lower upper surface plate 27 at the lower end and one end of the inner wall plate 30 is provided. Thus, the hollow cover body 14 is an airtight box body which is closed in an airtight manner except for the opening 12 portion. Thereby, the polished swarf can be easily taken into the inside from the opening 12 of the hollow cover body 14.
The working environment can be kept clean without the polishing waste taken in flowing out and floating. As shown in FIGS. 1 and 2, a discharge tube 46 for discharging polishing dust taken in is provided on a side wall plate 26 disposed on one end side of the hollow cover body 14. Removable lid 4
8 is installed.

An elastic member 50 is attached to the peripheral edge of the hollow cover body 14 on the side of the opening 12 so as to be able to airtightly adhere to the polished surface. As shown in FIG. 1, the elastic member 50
It is composed of a felt, sponge, brush, etc. attached to the outer surface side of the band-shaped peripheral plate 24 provided on the peripheral edge of the second. By providing the elastic member 50, the gap between the opening periphery of the hollow cover body 14 and the polishing surface can be closed by the elastic member 50 during the polishing operation, and the polishing dust polished on the polishing surface flows out of the cover. Can be prevented.

A rolling element 52 which can be smoothly moved in a pressing manner against the polishing surface is provided on the peripheral edge of the hollow cover body 14 on the opening side.
Is provided. As shown in FIG. 1, the elastic members 50 attached to the peripheral plate 24 are cut out at positions near both ends of the peripheral plates 24, 24 arranged facing each other in the longitudinal direction of the opening 12 to expose the peripheral plate 24. The rolling element 52 is rotatably supported at the position of the exposed peripheral plate. This rolling element 52
For example, small wheels such as free wheels, rollers, and rollers are preferable. By providing the rolling elements 52, when the hollow cover body 14 is moved on the polished surface, the hollow cover body 14 can be smoothly reciprocated with little frictional resistance with the polished surface. Therefore, the effectiveness of the polishing operation can be ensured.

Next, the operation of the first sandpaper device 10a according to the embodiment of the present invention will be described. When polishing the surface of a putty or the like filled and solidified in a joint of a base material such as an indoor vertical wall or a horizontal wall such as a ceiling surface using the first sandpaper device 10a, the upper surface of the hollow cover body 14 is used. The gripping portion 20 of the sandpaper holder 18 which is arranged in the side gripping hole 28 so as to protrude from below is gripped by hand. In this state, the opening 12 on the lower surface side of the hollow cover body 14 is applied along a polished surface such as a joint of a base material where the putty or the like is solidified, and the gripper 20 is biased by the biasing member of the elastic biasing support means 22. 36
Is pressed against the opening 12 against the elasticity of the sandpaper, and the sandpaper 16 on the lower surface side of the sandpaper holder 18 is pressed against the polished surface.

In this state, the hollow cover body 14 is reciprocated and slid in the longitudinal direction of the opening 12, and the elastic member 50 such as a felt on the periphery of the opening 12 is slid and adhered to the base material on the polished surface. The sandpaper 16 is polished by closely sliding it on the surface of the paper. In addition, by using a free wheel as the rolling element 52 provided on the peripheral edge of the opening 12, the hollow cover body 14 is reciprocally slid in a direction substantially intersecting with the length of the opening 12 to polish the surface of the putty or the like. Is also good.

During the work of polishing the wall surface, an elastic member 50 such as a felt provided on the periphery of the opening 12 is brought into close contact with the polishing surface, and the gripper 20 of the sandpaper holder 18 is pressed to place the sandpaper 16 on the surface of a putty or the like. Polish by sliding closely. During the operation of polishing the hollow cover body 14 by reciprocating sliding in the vertical direction, for example, polishing dust polished by reciprocating sliding about two or three times is polished by the elastic member 50 on the periphery of the opening 12. Since it slides in close contact with the surface, it does not flow out from the inside of the opening 12 to the outside, and is held in a state of being attached to the elastic member 50 and the sandpaper 16 of the opening 12.

Therefore, the vertical sliding is stopped at the upper limit position or the lower limit position during the reciprocating sliding in the vertical direction, and the elastic member 50 on the peripheral edge of the opening 12 is kept in close contact with the polished surface to hold the grip portion 20. Weaken the pressure of As a result, the sandpaper holder 18 retreats into the hollow cover body 14 by the return elasticity of the plurality of coil springs 40 of the elastic biasing support means 22, and at the same time, the sandpaper 16 on the lower surface side of the holding plate 32 moves from the opening 12 side into the cover body. The polishing dust on the wall surface side and the polishing dust attached to the elastic member 50 and the sandpaper 16 are retreated, and the sandpaper 1
6 is smoothly taken into and accommodated in the hollow cover body 14. This polishing debris is taken in by instantaneously changing the direction during the reciprocating sliding of the hollow cover body 14 in the vertical direction.
It is housed in the hollow cover body 14 in a shake-down shape from two sides.

Further, even on a horizontal wall such as a ceiling surface, the holding portion 20 is pressed upward and slid while the opening 12 of the hollow cover body 14 is joined to the polishing surface, and is polished by the sandpaper 16. In this horizontal wall, since the opening 12 is upward, the polishing dust can be taken into the hollow cover body 14 from the gap between the pressing plate 32 of the sandpaper holder 18 and the opening 12. However, by occasionally loosening the pressing force of the gripping portion 20 and retracting the sandpaper 16 into the cover body, the polishing waste can be more efficiently stored. The polishing waste taken in the hollow cover body 14 can be removed by removing the lid 48 of the discharge cylinder 46. Alternatively, the waste storage bag may be sequentially stored while the work is performed with the waste storage bag attached to the discharge cylinder 46.

As described above, the first sandpaper device 1
By polishing the indoor wall surface using the Oa, the polishing debris does not fall down on the worker to make the work difficult, and the polishing debris does not drop onto the floor surface to be soiled, and the polishing debris is hollow. It can be reliably captured and accommodated in the cover body. In addition, since a suction hose is not connected to the hollow cover body, it is easy to perform a polishing operation while holding the sandpaper holder, and workability is high,
The effectiveness of the polishing operation can be ensured. In addition, the polishing debris does not float on the work site as floating dust, and the work environment can be kept clean and hygienic, and the health of the worker can be improved.

Next, FIGS. 4, 5 and 6 show a second sandpaper apparatus 10b according to another embodiment. In this embodiment, the first sandpaper device 1 of the previous embodiment is used.
The same components as those of Oa are denoted by the same reference numerals, and detailed description thereof will be omitted. The second sandpaper device 10b, like the first sandpaper device 10a, includes a hollow cover body 14 having an opening 12, a sandpaper holder 18 disposed in the hollow cover body 14, and having a sandpaper 16 detachably mounted thereon, A handle portion 20 provided on the sandpaper holder 18 and elastic biasing support means 38 for biasing the sandpaper holder 18 to a position retracted from the opening 12 side are provided.

As shown in FIGS. 5 and 6, in the second sandpaper device 10b, the hollow cover body 14 is relatively movable with respect to the lightweight bone frame 54 and the lightweight bone frame 54. Sandpaper holder 18 provided in
And a covering material 56 interposed between them. The light bone frame 54 is made of a light and rigid light alloy or hard synthetic resin or the like.
8, on the upper surface near both ends in the longitudinal direction of the orbiting frame 58,
A first frame body 60 assembled in a frame shape using a light alloy wire, a hard synthetic resin wire, or the like as a material, a second frame body 62 having a height lower than the first frame body 60, Outer side frames 68, 68 and inner side frames 70, 70 are provided continuously near both ends of upper horizontal frames 64, 66 facing the two frames 60, 62. Rollers 52 such as free wheels, rollers, and rollers are pivotally supported on the inner surfaces of the frame members facing each other in the longitudinal direction of the orbiting frame 58 at positions near both ends thereof, and felt and sponge are provided on the lower surface of the orbiting frame 58. And an elastic member 50 such as a brush. The discharge cylinder 46 is fixed to the first frame body 60 and the lid 48 is
Is attached.

The sandpaper holder 18 is inserted and arranged in the lightweight bone frame 54 thus constructed, and constitutes the urging body 36 and the movement range regulating means 38 of the elastic urging support means 22 having the same structure as the first sandpaper device 10a. Rope 42
Thus, the sandpaper holder 18 is normally biased to the retreat position from the opening 12 and is supported so as to be pressed and moved toward the opening 12 during the polishing operation. The covering material 56 is made of cloth, non-woven fabric such as vinyl film, leather or the like. The coating material 56 is circulated from the trunk side surface of the lightweight aggregate 54 to the upper surface side.
0, 62, and upper side holding holes 2 surrounded by inner side frames 70, 70 connected to the upper frames.
8, it is stretched on the upper surface of the holding plate 32 of the sandpaper holder 18. Further, the covering material 56 is provided on the holding plate 3 of the sandpaper holder 18 from the upper surface side of the lightweight bone frame 54.
2, the sandpaper holder 18 supported by the urging member 36 and the rope 42 is supported by the hollow cover member 14.
It is preferable to stretch the fabric leaving an extra width as far as it can move up and down from the inside toward the opening 12 side, or to keep the fabric itself elastic.

Also in the second sandpaper device 10b, the gripping portion 20 protruding from the upper surface of the coating material 56 is gripped, and the opening 12 is brought into contact with the polishing surface and polished while sliding back and forth. In addition, the entire device is lightweight, and is excellent in storage property in a warehouse or the like, transportability to a work site, and the like. In addition, the operator's hands do not get tired during the polishing work, the workability is excellent, the work can be efficiently performed for a long time, and the precision of the polishing finish is increased.

The covering material 56 provided between the lightweight bone frame 54 and the sandpaper holder 18 movably provided to the lightweight bone frame 54 is configured to be detachably attached. Is preferred. For example, lightweight aggregate 5
4 are provided with a plurality of engaging parts such as snaps and hook-and-loop fasteners (not shown) which are detachably engaged with each other at a plurality of locations on the body side surface or the upper surface side and the inner surface side of the covering material 56 corresponding to these locations. Coating material 56 is provided on the upper surface of
A locking tool for detachably engaging the ends of the rims may be provided and engaged. As a result, the coating material 5 is applied to the lightweight bone frame 54.
Before attaching 6, the sandpaper holder 18 can be easily attached to the lightweight bone frame 54 with the biasing body 36 or the cable 42 by inserting a finger from the upper or lower surface side of the lightweight bone frame 54. In addition, the coating material 56 contaminated by the polishing debris during use can be removed from the lightweight bone frame 54 and easily replaced with another coating material 56, and the removed coating material 56 can be reused after being washed and dried so that the cost is reduced. Can be saved.

As shown in FIGS. 4 and 5, in the hollow cover body 14 of the second sandpaper device 10b, a receiving portion 72 for polishing dust is provided at one end thereof, and at one end side of the opening 12 is provided. An introduction portion 74 is provided for catching polishing dust generated in the polishing operation and introducing the same into the receiving portion 72. In the embodiment, the internal space on the side where the discharge cylinder 46 is provided is used as a receiving portion 72 for the polishing dust, and on the receiving portion 72 side, the introduction portion 74 is inclined downward from the upper position on the inner wall surface side toward the opening 12 side. is set up. It is preferable that the introduction portion 74 is formed of a brush.

For example, in the polishing operation of the wall surface, the elastic member 50 on the periphery of the opening 12 is brought into close contact with the polishing surface so that the receiving portion 72 of the hollow cover body 14 is located at the lower position.
The polishing surface is polished by the sandpaper 16 by reciprocating the longitudinal direction of the sample 2 in the vertical direction. When the sandpaper 16 is temporarily stopped at the time of the vertical direction change and the sandpaper 16 is retracted from the opening 12 side into the hollow cover body, the polishing debris staying in the opening 12 falls into the introduction portion 74 in the opening 12, The fluid flows from the introduction portion 74 to the receiving portion 72 in the cover and is housed therein. In addition, when the sandpaper 16 in the opening 12 is slid upward with respect to the polishing surface, the tip of the introduction portion 74 can catch the polished swarf while being in contact with the polished surface, and the swarf is sequentially received by the receiving portion 72. It flows and is stored inside. The polishing dust hardly flows out of the hollow cover body 14 to the outside. Further, the introduction section 74 may be configured by a plate piece.

Next, FIGS. 7, 8, and 9 show a third sandpaper device 10c according to another embodiment. Also in this embodiment, the same components as those of the first sandpaper device 10a of the previous embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. Third sandpaper device 1 according to the present invention
0c is an opening 1 as in the first sandpaper device 10a.
2, a sandpaper holder 18 disposed in the hollow cover body 14 and having a sandpaper 16 detachably mounted thereon, and a sandpaper holder 18
And a resilient biasing support means 38 in which the sandpaper holder 18 is biased and arranged at a position retracted from the opening 12 side.

In the third sandpaper device 10c,
The elastic biasing support means 38 is interposed between the hollow cover body 14 and the sandpaper holder 18, and is provided in a uniform state so as to directly connect them and to hold the sandpaper holder 18 at a substantially central position of the opening 18. Bellows body 7
6 is characterized.

That is, the bellows body 76 is formed around the orbiting frame 5 of the opening 12.
The hollow cover body 14 extends from the upper width plate 27 substantially horizontally circumscribed on the inner peripheral edge on the upper end side of the side wall plate 24 erected on the 8 peripheral plate.
Plate 32 of the sandpaper holder 18 arranged in the inside
It is stretched around the handle 28. In the embodiment, the bellows body 76 is made of a cloth, a nonwoven fabric, a thin metal plate, or the like, and has a rectangular shape having a rectangular shape in plan view corresponding to the longitudinal direction of the opening 12 and has elasticity in the vertical direction and sealing property. ing. Since the bellows 76 having a rectangular shape in a plan view has a rigidity in a long side direction or a short side direction thereof, the sandpaper holder 18 is positioned only at the center of the opening 12 of the hollow cover body 14 with only the bellows body 76. It can easily support elasticity in the vertical direction. At the same time, even if the sandpaper 16 is slid in a pressed manner against the polishing surface, the sandpaper holder 18 can be held at a substantially central position of the opening 18 without being displaced in the opening 12.

The bellows body 76 may be in the shape of an inverted truncated cone having a rectangular tube shape in plan view. In addition, since the bellows body 76 is continuously provided from the upper width plate 27 of the hollow case body 14 to the pressing plate 32 of the sandpaper holder 18, the inside of the hollow cover body 14 is held in an air-tight manner, and polishing dust does not flow out. Work effectiveness can be ensured. Further, the bellows body 76 can be easily attached to the sandpaper holder 18 and the hollow cover body 14 and has a simple configuration, so that maintenance and inspection are easy and the manufacturing cost is low.

As described above, in the sandpaper apparatus according to the present invention, when polishing the wall surface in the building, the swarf falls and makes the work of the operator difficult, or the floor surface is contaminated. Without such a problem, the polishing waste can be reliably captured in the hollow cover body, the polishing operation is easy, the workability is high, and the effectiveness of the polishing operation can be secured. In addition, the polishing dust does not float on the work site as floating dust, and the working environment can be kept clean and sanitary.

[0055]

As described above, the sandpaper apparatus according to the present invention has a hollow cover body having an opening facing the polishing surface, and is disposed in the vicinity of the opening, and the sandpaper is detachably mounted. A sandpaper holder and a handle attached to the sandpaper holder, and the elasticity for constantly moving the sandpaper holder to the retracted position from the opening and pressing and moving the sandpaper holder toward the opening during the polishing operation. By being provided with the biasing support means, when polishing with sandpaper, dropping polishing debris and falling to the worker, making the work difficult,
The polishing waste can be reliably captured and accommodated in the hollow cover body without causing the polishing waste to drop on the floor surface and become dirty. In addition, since no suction hose is connected to the hollow cover body, the polishing operation with the sandpaper holder is easily performed, the workability is high, and the effectiveness of the polishing operation can be secured. In addition, the polishing debris does not float on the work site as floating dust, and the work environment can be kept clean and hygienic, and the health of the worker can be improved.

Further, the elastic biasing support means regulates a moving range to a biasing body interposed between the sandpaper holder and the hollow cover body and a range corresponding to the opening of the sandpaper holder. Movement range regulating means;
When the sandpaper mounted on the sandpaper holder is polished by pressing the sandpaper from the inside of the hollow cover body to the polishing surface, the sandpaper holder is not displaced from the opening of the hollow cover body. The polishing operation of the polishing surface can be performed continuously and reliably. Also,
During the polishing operation, the sandpaper holder is temporarily retracted from the opening surface into the cover, so that the polishing debris can be efficiently taken in and accommodated in the hollow cover, thereby ensuring the effectiveness of the polishing operation.

Further, since the moving range restricting means is formed of a cable, it restricts the movement of the sandpaper holder with respect to the opening of the hollow cover body. Therefore, the sandpaper holder can be held with a simple cable structure, and maintenance and inspection can be performed. Etc. are also easy.

The hollow cover body has an opening on the surface facing the polishing surface, and the handle protrudes so that it can be pressed against the opening side and can be moved in an airtight manner except for the opening. By being made of a sealed airtight box,
The polished swarf can be easily taken in from the opening of the hollow cover body. Further, the working environment can be kept clean without the polishing waste taken into the hollow cover body leaking to the outside and floating.

Further, an elastic member which can be tightly adhered to the polishing surface is stretched over the peripheral edge of the hollow cover body on the opening side, so that the peripheral edge of the opening of the hollow cover body and the polishing surface during polishing work. Can be closed by an elastic member, and the polishing dust polished on the polished surface can be prevented from leaking to the outside.

Further, a rolling element is provided on the peripheral edge of the hollow cover body on the opening side so as to be able to smoothly move in a pressed manner against the polishing surface, so that the polishing is performed when the hollow cover body is moved on the polishing surface. It can reciprocate smoothly with little frictional resistance to the surface. Therefore, the effectiveness of the polishing operation can be ensured without fatigue of the hand holding the sandpaper holder during the operation.

Further, the hollow cover body includes a lightweight bone frame,
And a covering material interposed between the lightweight bone frame and a sandpaper holder movably provided to the lightweight bone frame, whereby the hollow cover body is lightweight, Since the whole apparatus is extremely light, it is excellent in storage in a warehouse and transportability to a work site. In addition, the operator's hands do not get tired during the polishing work, the workability is excellent, the work can be efficiently performed for a long time, and the precision of the polishing finish is increased.

The covering material interposed between the lightweight bone frame and a sandpaper holder movably provided to the lightweight bone frame is detachably mounted, so that the weight is reduced. Before attaching the covering material to the bone frame, a hand can be inserted from the upper surface or the lower surface side of the lightweight bone frame, and the sandpaper holder can be easily attached to the lightweight bone frame by a biasing body or a cable. In addition, the dressing contaminated with abrasive debris during use can be removed from the lightweight bone frame and easily replaced with other dressings,
The removed coating material can be reused after being washed and dried, thereby saving costs.

A receiving portion for polishing dust is provided in the hollow cover body, and an introduction portion is provided at one end side of the opening for catching polishing dust generated in the polishing operation and introducing it into the receiving portion. By being formed, during the polishing operation of reciprocating the hollow cover body, the polishing debris can be captured by the introduction portion and introduced into the receiving portion in the cover body, and the polishing debris hardly leaks from the cover body to the outside. .

Further, the elastic biasing support means comprises a bellows body interposed between the hollow cover body and the sandpaper holder and provided so as to hold the sandpaper holder at a substantially central position of the opening. Accordingly, the sandpaper holder can be easily and elastically supported at substantially the center of the opening of the hollow cover body only by the bellows body, and the effect of the polishing operation can be secured. Further, the bellows body can be easily attached to the sandpaper holder and the hollow cover body, and the structure is simple, so that maintenance and inspection are easy and the manufacturing cost is low.

[Brief description of the drawings]

FIG. 1 is a bottom perspective view of a first sandpaper device according to a first embodiment of the present invention.

FIG. 2 is an explanatory perspective view of the left side of the first sandpaper apparatus shown in FIG. 1;

FIG. 3 is an explanatory perspective view of a conventional sandpaper holder.

FIG. 4 is an explanatory bottom view of a second sandpaper device according to a second embodiment of the present invention.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a sectional view taken along the line BB of FIG. 5;

FIG. 7 is an explanatory bottom view of a third sandpaper device according to a third embodiment of the present invention.

8 is a sectional view taken along line CC of FIG. 7;

9 is a sectional view taken along line DD of FIG.

[Explanation of symbols]

 10a first sandpaper device 10b second sandpaper device 10c third sandpaper device 12 opening 14 hollow cover body 16 sandpaper 18 sandpaper holder 20 gripping portion 22 elastic biasing support means 36 biasing body 38 movement range restricting means 42 cable 50 elasticity Material 52 rolling element 54 lightweight aggregate 56 covering material 72 receiving part 76 bellows

Claims (10)

[Claims] 1. A hollow cover body having an opening on a surface facing a polishing surface, a sandpaper holder disposed in the vicinity of the opening and having a sandpaper removably mounted thereon, and a handle attached to the sandpaper holder. ,
A sandpaper apparatus comprising: an elastically biasing support means for constantly urging the sandpaper holder to a retracted position from the opening and pressing and moving the sandpaper holder toward the opening side during a polishing operation. 2. The resilient biasing support means restricts a moving range to a biasing body interposed between the sandpaper holder and the hollow cover body and a range corresponding to the opening of the sandpaper holder. 2. The sandpaper device according to claim 1, further comprising a movement range regulating means. 3. The sandpaper device according to claim 1, wherein the movement range restricting means comprises a cord. 4. The hollow cover body has an opening at a surface facing the polishing surface, and the handle portion projects so as to be able to be pressed against the opening side to be moved, and is closed in an airtight manner except for the opening portion. 4. An airtight box body as claimed in claim 1.
The sandpaper device according to any one of the above. 5. The peripheral edge on the opening side of the hollow cover body,
The sandpaper device according to any one of claims 1 to 4, wherein an elastic member that can be tightly adhered to the polishing surface is stretched. 6. A peripheral edge on the opening side of the hollow cover body,
The sandpaper device according to any one of claims 1 to 5, further comprising a rolling element capable of smoothly moving in a pressed manner on the polishing surface. 7. The covering material interposed between the lightweight bone frame and a sandpaper holder movably provided from the lightweight bone frame to the lightweight bone frame, wherein: The sandpaper device according to any one of claims 1 to 6, further comprising: 8. The coating material interposed between the lightweight bone frame and a sandpaper holder movably provided to the lightweight bone frame is detachably mounted. Sandpaper equipment. 9. A receiving portion for polishing swarf is provided in the hollow cover body, and an introduction portion for catching polishing swarf generated by a polishing operation and introducing it into the receiving portion is provided at one end in the opening. The sandpaper device according to any one of claims 1 to 8, wherein the sandpaper device is provided. 10. The resilient biasing support means comprises a bellows body interposed between the hollow cover body and the sandpaper holder, and provided to hold the sandpaper holder at a substantially central position of the opening. Item 4. The sandpaper device according to Item 1.