JP3192092U - Water supply nozzle fixture for rotary blades - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the scattering of dust generated by a rotary blade by continuously and reliably and continuously directly supplying water to the rotary blade without interrupting operations such as cutting, grinding or polishing of an object by the rotary blade. Provided is a water supply nozzle fixture for a rotary blade, which positions and fixes a water supply nozzle for the rotary blade. SOLUTION: This is a fixture for a water supply nozzle for a rotary blade that reduces the amount of water by directly injecting and supplying water from the water supply nozzle 3 to the rotary blade 50b. Position the distance from the tip of the nozzle 3 to 3 mm or less. [Selection diagram] Fig. 3

Description

  The present invention is to rotate a rotating blade that cuts, grinds or polishes an object such as concrete, stone, metal, wood, plastic such as vinyl chloride, etc., and reduces the dust when it contacts the object with water. The present invention relates to a rotary blade water nozzle fixing tool that positions and fixes the rotary blade water nozzle.

  The invention of Patent Document 1 is disclosed as a technique for reducing dust in cutting, grinding, polishing, or the like using a rotary blade. The invention of Patent Document 1 is an apparatus that can be attached to a grinder used for cutting concrete or the like to prevent dust from being scattered and can also effectively collect dust, along the rotary blade 3 of the grinder 1. And a porous water absorbent cover 10 that is detachably attached to the protective member 4 provided, and a porous water absorbent hood 20 that is detachably attached near the rear end of the protective member 4.

In paragraph 0012 of Patent Document 1, “the cover 10 has a curved locking portion 12 having a surface fastener 11 that engages with the surface fastener 5 as shown in FIGS. 3 and 4, and It consists of a substantially crescent-shaped eaves portion 13 protruding from the upper end so as to cover the rotary blade 3. The eave portion 13 is formed of a porous and water-absorbing material such as sponge or cotton. In addition, if a flap 14 is provided at the tip of the locking portion 12 and a slit 15 is provided in the middle of the flap 14 so that the rotary blade 3 rotates through the slit 15, the dustproof effect is further improved. This flap 14 is also preferably made of a porous water-absorbing material such as sponge. "

Further, in paragraph 0017 of Patent Document 1, “when using the dustproof device as described above, the dustproof / dust collecting effect is improved by impregnating the eaves 13 and the dust bag 22 with water”. a.

  That is, the dust prevention device of the grinder of the cited document 1 is a porous water absorbent cover that covers the rotary blade and collects dust with a porous water absorbent hood, and impregnates water as necessary. is there.

However, in the dustproof device of the grinder of the cited document 1, even if the porous water-absorbing cover is impregnated with water, the impregnated water is blown off by the rotation of the rotary blade as the work proceeds, and sufficient dust is continuously generated. The prevention effect cannot be demonstrated. In order to maintain the dust-proof effect, operations such as cutting, grinding or polishing must be interrupted from time to time to perform water-containing work on the porous water-absorbent cover, which is cumbersome and inefficient in workability.

On the other hand, if water is simply jetted and supplied to the rotary blade, the water sprayed and supplied by the rotation of the rotary blade is repelled and the rotary blade cannot be sufficiently wetted, making it a coexistence of dust and water. And the effect of reducing dust scattering was not high. Therefore, the inventor has invented a technology related to Japanese Patent Application No. 2014-036471 for continuously supplying water to a sponge abutting against a rotary blade, and applied for a patent.

  After that, as a result of earnest research, the inventor limited the position of the water supply nozzle, the flow rate of the water supply, the diameter of the water supply nozzle, etc., so that even if water is supplied directly to the rotary blade without providing a sponge, it is repelled by the rotary blade. Without water, it was found that the water supplied took in the dust and reduced the scattering of the dust.

Japanese Utility Model Publication No. 5-85545

  Therefore, the present invention continues to supply water directly and reliably to the rotary blade without interrupting operations such as cutting, grinding or polishing of the object with the rotary blade, thereby preventing the scattering of dust generated by the rotary blade. It aims at providing the water supply nozzle fixing tool for rotary blades which positions and fixes the water supply nozzle for rotary blades to reduce.

In order to solve the above problems, the present invention
(1)
Fixing tool for water supply nozzle for rotary blade that reduces the dust scattered by the rotary blade covered with the grinder cover by directly injecting and supplying water from the water supply nozzle to the rotary blade. Because
A water supply nozzle fixture for a rotary blade, which is locked to the cover and positions a distance between a side surface of the rotary blade and a tip of the water supply nozzle to 3 mm or less.
(2)
A U-shaped sandwiching portion having left and right side surfaces located on the left and right side surfaces of the cover and having a screw hole on the left side surface;
A butterfly bolt that is screwed into the screw hole and has an end abutting against the cover and holding the cover with the right side surface of the holding part and fixing the holding part to the cover;
A holding part that is attached to the right side surface of the clamping part and positions and fixes the water supply nozzle;
The water supply nozzle fixture for rotary blades according to (1), characterized by comprising:
(3)
A U-shaped sandwiching portion having left and right side surfaces located on the left and right side surfaces of the cover and having a screw hole on the left side surface;
A butterfly bolt that is screwed into the screw hole and has an end abutting against the cover and holding the cover with the right side surface of the holding part and fixing the holding part to the cover;
A holding part that is attached to the right side surface of the clamping part and positions and fixes the water supply nozzle;
An L-shaped tool having one end rotatably fixed to the holding part on the right side surface side of the cover and the other end locked to the outside of the cover and having a long hole at the end;
A screw inserted into the long hole of the L tool and having a head positioned on the bottom surface of the L tool and locked to the inside of the cover;
A butterfly bolt threadably engaged with the screw;
The water supply nozzle fixture for rotary blades according to (1), characterized by comprising:
(4)
The rotating blade covered with the grinder cover reduces dust scattered by contacting the object to be processed by supplying water to the rotating blade from a water supply nozzle having a diameter of 3 mm or more at a rate of 60 cc or more / min. A grinder,
A grinder equipped with a water supply nozzle, wherein a distance between a side surface of the rotary blade and a tip of the water supply nozzle is set to 3 mm or less.
(5)
The grinder equipped with the water supply nozzle according to claim 4, wherein the water supply nozzle is positioned and fixed by the water supply nozzle fixing tool for rotary blades according to any one of (1) to (3).
It was.

  Since the present invention has the above-described configuration, it is possible to reliably and continuously supply water directly to the rotating blade without interrupting operations such as cutting, grinding, or polishing of the object, and the scattering of dust generated by the rotating blade. Can be prevented. In addition, since the dust can be reduced with water by using the present invention for the rotating blade in cutting, grinding, and polishing of the object, it can reduce the health damage to workers and people around the work environment due to dust suction. it can.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view of a grinder equipped with a water supply nozzle in a rotary blade water supply nozzle fixture according to a first embodiment of the present invention. It is a front schematic diagram of the grinder which equipped the water supply nozzle with the water supply nozzle fixing tool for rotary blades which is 1st embodiment of this invention. It is a perspective schematic diagram of the grinder which equipped the water supply nozzle with the water supply nozzle fixing tool for rotary blades which is 2nd embodiment of this invention. It is a front schematic diagram of the grinder which equipped the water supply nozzle with the water supply nozzle fixing tool for rotary blades which is 2nd embodiment of this invention.

  Hereinafter, the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited to the following Example.

  As shown in FIGS. 1 and 2, the grinder 1 equipped with the water supply nozzle for directly supplying water to the rotary blade 50 b according to the present invention has the rotary blade 50 b covered with the cover 50 c of the grinder 50 as the object to be processed. Dust scattered by contact is reduced by directly supplying water from the water supply nozzle 3 to the rotary blade 50b. The grinder 50, the water supply nozzle 3, the water supply nozzle fixture 2 for the rotary blade, And the liquid feeding section 4.

  The grinder 50 incorporates a motor that rotates the rotary blade 50b and is connected to a main body 50a that is gripped by a hand, a cord 50d that is electrically connected to the motor of the main body 50a, and a power source that is provided at an end of the cord 50d. The plug 50e and a cover 50c that covers approximately half of the upper side of the upper surface of the rotary blade 50b and that is exposed to the entire surface of the rotary blade 50b and is detachably fixed to the main body 50a. Or a grinder (sometimes called a sander or the like) can be used. As a power source of the grinder 50, a rechargeable battery or a generator can be used in addition to a commercial power source. Further, an engine-type grinder does not include a motor and a cord 50d, and does not require a power source. The present invention can also be applied to an engine type grinder.

  For example, as shown in FIG. 2, the water supply nozzle 3 is positioned at a distance of 3 mm or less from the rotary blade 50b, and has a cylindrical main body 3a for discharging water, and a cylindrical branch pipe 3b branched from the main body 3a. And a valve 3c provided with a piece of a shape (C-shaped cross section at a position orthogonal to the longitudinal direction) along the shape inside the main body 3a and rotatably attached to the main body 3a. The valve 3c can be provided in the hose 5 or the like without being provided in the main body 3a.

  Water is discharged from the tip of the main body 3a. The discharged water directly hits the rotary blade 50b and gets wet. When water is directly sprayed onto the rotary blade 50b, it is desirable that the main body 3a of the water supply nozzle 3 has an inner diameter of 3 mm or more and the spraying flow rate is 60 cc or more / minute. As the upper limit of the flow velocity, 150 cc is sufficient, and if it is more than that, a large amount of water flows into the work environment, and the cleaning becomes difficult.

  The rotary blade water supply nozzle fixture 2 is locked above the cover 50c and positions the distance between the side surface of the rotary blade 50b and the tip of the water supply nozzle 3 to 3 mm or less. For example, FIG. 2, the holding portion 2 a, the butterfly bolt 2 d, and the holding portion 2 e are included.

  The sandwiching portion 2a is U-shaped, the left and right side surfaces are positioned on the left and right side surfaces of the cover 50c, and has a screw hole on the left side surface. In addition, the magnet 2b is being fixed with the fastener 2c at the cover 50c side inside the clamping part 2a. The left side surface of the cover 5c is connected to the main body 50a while the rotary blade 50b is half exposed, and the entire bottom surface of the rotary blade 50b is exposed on the right side surface of the cover 50c.

  The magnet 2b is attracted to the cover 50c of the grinder 50 made of iron or the like by magnetic force and becomes a temporary fastening until the clamping part 2a is fixed with the butterfly bolt 2d, and the clamping part 2a is held at the mounting position to perform the fixing work. Assist. By having the magnet 2b, even one person can easily tighten the butterfly bolt 2d.

  The butterfly bolt 2d is screwed into the screw hole on the left side surface of the clamping portion 2a, and the cover 50c is clamped between the end of the butterfly bolt 2d and the right side surface of the clamping portion 2a, thereby fixing the clamping portion 2a to the cover 50c. .

  The holding part 2e is rotatably attached to the right side of the clamping part 2a with a screw 2f, and is a distance between the side surface of the rotary blade 50b and the tip of the main body 3a of the water supply nozzle 3 and a water supply nozzle in the radial direction of the rotary blade 50b. Position 3 and fix. In addition, when the holding | maintenance part 2e does not need to rotate, the clamping part 2a and the holding | maintenance part 2e can also be integrally molded.

  The holding portion 2e is formed by bending a thin plate into an annular shape, the branch pipe 3b is inserted into the ring, and the branch pipe 3b is fixed by a fastener. In addition, the holding portion 2e is fixed to the holding portion 2a with a screw 2f at a non-annular portion.

  As a result, the water supply nozzle 3 is locked to the holding portion 2a via the holding portion 2e, and the holding portion 2a is connected to the cover 50c. The water supply nozzle fixture 2 for the rotary blade is connected to the cover 50c. Will be positioned and mounted.

  Here, in the water supply nozzle fixture 2 for the rotary blade, the clamping portion 2a and the holding portion 2e are separated, but if the water supply nozzle 3 can be positioned and the water supply nozzle fixture 2 for the rotary blade can be fixed to the cover 50c, Another form may be sufficient and it may be further integrated.

  The liquid feeding unit 4 includes a hose 5 and a pump 6. One end of the hose 5 is connected to the branch pipe 3b, and the other end is provided with a pump 6. As shown in FIG. 1, the hose 5 may be bundled together by a cord 50d of the grinder 50 and a binding band 5a such as a plastic band, rubber, string, plastic or metal clip. The hose 5 and the cord 50d do not get in the way and workability is improved.

  The pump 6 continuously supplies water to the hose 5 (water supply nozzle 3). Here, illustration of the power source of the pump 6 is omitted. As with the grinder 50, the pump 6 is connected to and driven by a commercial power source, a battery, a generator, and a solar panel.

  The pump 6 may not have an on / off switch. Further, the on / off of the pump 6 may be controlled in conjunction with the on / off of the grinder 50 (the rotary blade 50b) and the mounting of the grinder 50. In conjunction with these, water is saved when the pump 6 is turned on and off. Instead of connecting the hose 5 to the pump 6, it may be connected to a tap water faucet to continuously supply water to the water supply nozzle 3. It is also possible to adjust the amount of water delivered by opening and closing the faucet plug. In addition to the water supply method to the water supply nozzle 3, manual pressurized liquid supply from the tank to the hose can be used.

  As shown in FIGS. 3 and 4, the grinder 11 equipped with a water supply nozzle that directly supplies water to the rotary blade 50 b is such that the rotary blade 50 b covered with the cover 50 c of the grinder 50 comes into contact with the object to be processed. The scattered dust is reduced by directly injecting and supplying water from the water supply nozzle 3 to the rotary blade 50b. The grinder 50, the water supply nozzle 3, the water supply nozzle fixing tool 12 for the rotary blade, and the liquid feeding unit It consists of four.

  The rotary blade water supply nozzle fixture 12 is locked below the cover 50c, and positions the distance between the side surface of the rotary blade 50b and the tip of the water supply nozzle 3 to 3 mm or less. For example, FIG. 4, the holding portion 12 i, the wing bolt 2 d, the holding portion 12 a, the L-shaped tool 12 c, the wing nut 12 e, and a protector 13 as necessary.

  The sandwiching portion 12i is U-shaped, the left and right side surfaces are positioned on the left and right side surfaces of the cover 50c, and has a screw hole on the left side surface. In addition, the magnet 2b is being fixed with the fastener 2c by the side of the cover 50c inside the clamping part 12i like an Example.

    The butterfly bolt 2d is screwed into the screw hole on the left side surface of the clamping portion 2a, and the cover 50c is clamped between the end of the butterfly bolt 2d and the right side surface of the clamping portion 2a, thereby fixing the clamping portion 2a to the cover 50c. .

  The holding part 12a is a plate shape rotatably attached to the front end part of the right side surface of the clamping part 12i by a fastener 12b, and the distance between the side surface of the rotary blade 50b and the front end of the main body 3a of the water supply nozzle 3 is determined. The water supply nozzle 3 is positioned and fixed in the radial direction 50b. In addition, when the holding | maintenance part 12a does not need to rotate, the clamping part 12i and the holding | maintenance part 12a can also be integrally molded.

  One end of the L-shaped tool 12c is fixed to the holding part 12i on the right side surface of the cover 50c so as to be rotatable by a fastener 12d, and the other end is locked to the outside of the cover 50c.

  Further, a long hole 12k is formed in a surface of the tip portion located on the right side of the rotary blade 50b, a head 12p is inserted into the rotary blade 50b side, and a screw 12n is inserted into the long hole 12k. The wing nut 12e is fitted on the side opposite the head 12p, the head 12p is locked to the cover 50c, and the L-shaped tool 12c is fixed to the cover 50c. By using the long holes 12k, the L-shaped tool 12c can be fixed to the cover 50c even if the diameter (size) of the cover 50c is different, so that it can be used for other models and is highly versatile.

  In the rotary blade water supply nozzle fixture 12 thus configured, the water supply nozzle 3 is fixed at one place by the clamping part 12i, two places by the L-shaped tool 12c, and a total of three places by the cover 50c. As a result, the distance between the rotary blade 50b and the tip of the water supply nozzle 3 can be reliably positioned to 3 mm or less. Positioning continues even when the grinder 50 is working.

  Furthermore, since the L-shaped tool 12c is rotatably fixed to the holding part 12i, even if the size of the cover 50c differs for each manufacturer and model number, the positioning and position of the water supply nozzle 3 can be reliably maintained. it can. Example 2 becomes the water supply nozzle fixture 12 for rotary blades, which is extremely versatile.

  The protector 13 includes a plate 12f, a sheet 12g, and a fastener 12h.

  The plate 12f is connected to the clamping part 12i and fixes the sheet 12g to the fastener 12h.

  The sheet 12g is fixed to the plate 12f at the bottom of the cover 50c, and the other end of the sheet 12g hangs downward and is splashed by the rotation of the rotary blade 50b, thereby reducing dirt around the operator and the work place.

  If the magnet 2b is a neodymium magnet, the protector 13 can be stably attached to the cover 50c even in the grinder 50 operation without using the butterfly bolt 2d.

DESCRIPTION OF SYMBOLS 1 Grinder equipped with water supply nozzle 2 Water supply nozzle fixing tool 2a for rotary blade 2c Holding part 2b Magnet 2c Clip 2d Butterfly bolt 2e Holding part 2f Screw 3 Water supply nozzle 3a Main body 3b Branch pipe 3c Valve 4 Liquid supply part 5 Hose 5a Binding band 6 Pump 11 Grinder 12 with Water Supply Nozzle 12 Water Supply Nozzle Fixing Tool 12a Retaining Tool 12b Retaining Tool 12c L-shaped Tool 12d Fastening Tool 12e Wing Nut 12f Plate 12g Sheet 12h Fastening Tool 12i Nipping Portion 12k Long Hole 12n Screw 12p Head Part 13 Protector 50 Grinder 50a Main body 50b Rotary blade 50c Cover 50d Cord 50e Plug

Claims (5)

Fixing tool for water supply nozzle for rotary blade that reduces the dust scattered by the rotary blade covered with the grinder cover by directly injecting and supplying water from the water supply nozzle to the rotary blade. Because
A water supply nozzle fixture for a rotary blade, which is locked to the cover and positions a distance between a side surface of the rotary blade and a tip of the water supply nozzle to 3 mm or less. A U-shaped sandwiching portion having left and right side surfaces located on the left and right side surfaces of the cover and having a screw hole on the left side surface;
A butterfly bolt that is screwed into the screw hole and has an end abutting against the cover and holding the cover with the right side surface of the holding part and fixing the holding part to the cover;
A holding part that is attached to the right side surface of the clamping part and positions and fixes the water supply nozzle;
The feed nozzle fixing tool for a rotary blade according to claim 1, comprising: A U-shaped sandwiching portion having left and right side surfaces located on the left and right side surfaces of the cover and having a screw hole on the left side surface;
A butterfly bolt that is screwed into the screw hole and has an end abutting against the cover and holding the cover with the right side surface of the holding part and fixing the holding part to the cover;
A holding part that is attached to the right side surface of the clamping part and positions and fixes the water supply nozzle;
An L-shaped tool having one end rotatably fixed to the holding part on the right side surface side of the cover and the other end locked to the outside of the cover and having a long hole at the end;
A screw inserted into the long hole of the L tool and having a head positioned on the bottom surface of the L tool and locked to the inside of the cover;
A butterfly bolt threadably engaged with the screw;
The feed nozzle fixing tool for a rotary blade according to claim 1, comprising: The rotating blade covered with the grinder cover reduces dust scattered by contacting the object to be processed by supplying water to the rotating blade from a water supply nozzle having a diameter of 3 mm or more at a rate of 60 cc or more / min. A grinder,
A grinder equipped with a water supply nozzle, wherein a distance between a side surface of the rotary blade and a tip of the water supply nozzle is set to 3 mm or less. The grinder equipped with the water supply nozzle according to claim 4, wherein the water supply nozzle is positioned and fixed by the water supply nozzle fixing tool for rotary blades according to any one of claims 1 to 3. .