WO2013132720A1 - 散水ノズル - Google Patents
散水ノズル Download PDFInfo
- Publication number
- WO2013132720A1 WO2013132720A1 PCT/JP2012/082609 JP2012082609W WO2013132720A1 WO 2013132720 A1 WO2013132720 A1 WO 2013132720A1 JP 2012082609 W JP2012082609 W JP 2012082609W WO 2013132720 A1 WO2013132720 A1 WO 2013132720A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- operation lever
- water
- lever
- force point
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
- B05B1/18—Roses; Shower heads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
- B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
- B05B1/1627—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a gate valve, a sliding valve or a cock
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3013—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a lift valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/01—Spray pistols, discharge devices
Definitions
- the present invention is mainly used for gardening, cleaning, agriculture, etc. at home, etc., and relates to a watering nozzle that is connected to the tip of a water supply facility such as a water supply via a hose, and is operated by a user in particular. It relates to a watering nozzle.
- watering nozzles that are attached to the tip of a hose and can be switched between watering and water stopping are widely used for gardening, agriculture, cleaning, and the like.
- a watering nozzle receives water from a water supply facility such as a water supply via a hose and sprays water from a watering port formed at the tip.
- the conventional watering nozzle 25 forms a water flow path 10 connecting the nozzle body 6 from the proximal inlet to the front water spray 5a, and an on-off valve seat is formed in this flow path.
- the on-off valve which consists of 7a and the on-off valve body 13 was provided. Further, an operation lever 15 is attached in front of the nozzle body 6 (water pipe 7) so as to be able to approach and separate, and the on-off valve body 13 is moved closer to and away from the on-off valve seat 7a in conjunction with the approach and separation of the operation lever 15. There was something to open and close.
- a relay lever 26 is disposed between the operation lever 15 and the nozzle body 6 in order to link the operation lever 15 and the opening / closing valve.
- the relay lever 26 formed in a substantially L shape in a side view forms a fulcrum portion 27 that is rotatably supported by the nozzle body 6 in a bent portion, and a force point portion that contacts the operation lever 15. 28 is formed at one end, and an action point portion 29 that abuts on the on-off valve body 13 is formed at the other end.
- the force point portion 28 is pushed by the inner surface of the operation lever 15 and the relay lever 26 rotates, and the action point portion 29 opens and closes the on-off valve body 13. It could be released by pushing away from the seat 7a.
- the tap water pressure of a faucet in a general home or the like is about 0.15 MPa, the lower limit may be about 0.05 MPa, and the upper limit may be as high as 0.74 MPa.
- the hydrostatic pressure and the load proportional to the tap water pressure are applied to the on-off valve body 13 at the valve closed position (water stop position), when switching from the water stop position to the water flow, There was a problem that the operating load became heavy.
- the operating load of the operation lever 15 can be reduced by increasing the distance from the fulcrum part 27 to the force point part 28.
- the angle at which the relay lever 26 is attached to the nozzle body 6 at the water stop position There are restrictions on the angle at which the relay lever 26 is attached to the nozzle body 6 at the water stop position. If the distance from the fulcrum part 27 to the force point part 28 is lengthened under such a restriction, the relay lever 16 becomes larger and protrudes in front of the watering nozzle 25, so that the operation lever 15 covering this also moves forward. Therefore, there is a problem that operability such as finger hooking deteriorates.
- an annular packing is loosely fitted on the outer periphery of the valve body portion at the downstream end of the on-off valve body, and an E-ring is attached to form an annular shape.
- the annular packing is slidably attached to the on-off valve body by a predetermined length in the upstream and downstream direction.
- the watering nozzle is formed with a first valve in which the annular packing approaches and separates from the opening / closing valve seat of the nozzle body, and a second valve in which the annular packing and the valve body portion of the opening / closing valve body approach and separate.
- the present invention has been made to solve the above problems, and it is an object of the present invention to provide a watering nozzle that can effectively reduce the operating load of the operation lever even at a high water pressure state at a water stop position at low cost.
- means for solving the above problems are as follows. 1st invention arrange
- An opening / closing valve that opens and closes the flow path, a fulcrum portion that is disposed between the operation lever and the opening / closing valve and is rotatably supported by the nozzle body, a force point portion that contacts the operation lever, and the A water spray nozzle that opens and closes the on-off valve by rotating the relay lever according to a positional relationship between the operation lever and the nozzle body.
- the relay lever is provided with two or more force point portions different in distance from the fulcrum portion, and the force point portion formed farthest from the fulcrum portion at the water stop position of the on-off valve is Abuts the operation lever Allowed, openness of the opening and closing valve in the larger position than a predetermined degree, characterized in that is brought into contact with another of the force input portion to the operating lever.
- the relay lever is provided with two or more action point portions having different distances from the fulcrum portion, and is formed closest to the fulcrum portion at the water stop position of the on-off valve.
- the action point is brought into contact with the on-off valve, and the other action point is brought into contact with the on-off valve at a position where the opening degree of the on-off valve is larger than a predetermined degree.
- the relay lever is provided with a first force point portion far from the fulcrum portion and a second force point portion close to the fulcrum portion, and a distance from the fulcrum portion to the second force point portion / the fulcrum point.
- the distance from the portion to the first force point portion is 0.20 to 0.80.
- the relay lever is provided with two or more force point portions having different distances from the fulcrum portion, and is formed farthest from the fulcrum portion at the water stop position of the on-off valve.
- the relay lever is provided with two or more action point portions having different distances from the fulcrum portion, and is closest to the fulcrum portion at the water stop position of the on-off valve.
- the action point part closest to the fulcrum part contacts the on-off valve at a high water pressure stop position to reduce the operating load of the operating lever. Can do.
- the other action point part far from the fulcrum part comes into contact with the on-off valve by bringing the other action point part into contact with the on-off valve.
- the operation amount of the on-off valve can be increased, and the on-off valve can be effectively opened and closed with a small stroke amount of the operation lever.
- the relay lever is provided with the first force point portion far from the fulcrum portion and the second force point portion close to the fulcrum portion, and the distance / the distance from the fulcrum portion to the second force point portion / Since the distance from the fulcrum to the first force point is 0.20 to 0.80, the operating load at the water stop position is reduced and the on / off valve is effectively operated with a small stroke of the operating lever. Can be opened and closed. In order to realize these effects, in the rotation range of the operation lever, the ratio of the region where the first force point part abuts on the operation lever and the region where the second force point part abuts on the operation lever is made appropriate. Can do.
- FIG. 1 It is a figure of the water flow pipe which comprises the nozzle main body of the watering nozzle, (a) is a side view, (b) is a front view. It is the elements on larger scale which showed the relay lever vicinity in the water stop state of the watering nozzle. It is a figure which shows the conventional watering nozzle, (a) is a longitudinal cross-sectional view, (b) is the elements on larger scale of an on-off valve. It is a figure which shows the relay lever of the conventional watering nozzle, (a) is a front perspective view, (b) is a back perspective view.
- This watering nozzle 1 is an instrument that is connected to the tip of a water supply facility such as a water supply via a hose for horticulture, agriculture, cleaning, and other uses, and is used by a user in hand. It is.
- the watering nozzle 1 includes a grip portion 3 formed in a substantially cylindrical shape extending upward from a base end portion 3a that is connected to a hose or the like to form an inlet 2 for introducing water, and the grip It has a nozzle body 6 that extends forward from the upper end of the portion 3 and has water spouts 5a and 5b formed at the tip, and is formed in a bent shape such as an L shape, a dogleg shape, or a pistol shape as a whole. is doing.
- a water flow path 10 extending from the introduction port 2 to the water spray ports 5a and 5b is formed in the nozzle body 6.
- the nozzle body 6 is formed by connecting a hose nipple 8 and a water discharge head 9 to a bent water pipe 7 and assembling a plurality of covers covering the outer periphery. Alternatively, a plurality of members may be combined for some of them.
- the grip part 3 is formed in a substantially cylindrical shape extending upward from the base end part 3a, and can be gripped and handled by the user.
- an unevenness and an O-ring for connecting to a receiving tool (not shown) attached to the hose are provided on the outer peripheral surface, and water from the water supply facility is introduced into the center thereof.
- a hose nipple 8 having an opening 2 is attached below the water flow pipe 7.
- the direction of the grip part 3 may be completely vertical, but is inclined from the vertical direction as shown in FIG. 1 and extends upward in a direction intersecting with the extending direction of the grip part 3. Also good.
- the nozzle portion 4 is formed in a substantially cylindrical shape that extends forward from the upper end of the grip portion 3.
- a water discharge head 9 is attached to the tip of the water flow pipe 7.
- the water discharge head 9 includes a fixing member 11 connected to the water flow pipe 7 and a screwing member 12 attached to the tip of the fixing member 11 and forming a shower water spout 5a and a straight water spout 5b.
- a switching port 11a for flowing water supplied from the water flow pipe 7 to the screwing member 12 side is formed on the peripheral surface of the fixing member 11, and the screwing member 12 moves forward and backward by screwing with respect to the fixing member 11. Attached to be able to.
- the switching port 11a can be selectively communicated with the shower sprinkling port 5a or the straight sprinkling port 5b depending on the position of the screwing member 12 with respect to the fixing member 11, and the shower watering and the straight watering can be switched.
- the watering nozzle 1 has an open / close valve that switches between water flow and water stop in the flow path of the water flow pipe 7.
- an on-off valve body 13 is arranged in the flow path 10 on the grip part 3 side of the water flow pipe 7. As shown in FIG. 4, the on-off valve body 13 is formed in a covered cylindrical shape inscribed in the water flow pipe 7, and a protruding valve body portion 13 a is formed on the top of the lid.
- the valve body portion 13 a is formed in a stepped shape that gradually decreases in diameter as it approaches the tip.
- the valve body portion 13a may be formed in such a step shape, or may be formed in a substantially conical shape whose diameter gradually decreases as it approaches the tip, or a combination of the step shape and the substantially conical shape. In short, the diameter may be gradually and / or stepwise reduced as it approaches the tip.
- an O-ring 13b is attached to the valve body portion 13a to contact the opening / closing valve seat 7a and close the flow path 10.
- O-rings 13c and 13c are provided at two locations on the outer peripheral surface of the on-off valve body 13 so that water does not flow on the outer periphery of the on-off valve body 13.
- the water inlet 13d is opened on the outer peripheral surface above the O-rings 13c and 13c.
- the water supplied from the base end (downward) of the water flow pipe 7 passes through the inside of the on-off valve body 13, flows out to the outer periphery from the water flow port 13 d, and flows downstream.
- only one O-ring 13c may be provided, by arranging a plurality of, for example, two O-rings, the sealing performance can be improved and the movement of the on-off valve body 13 can be made smooth.
- the valve body 13 a of the on-off valve body 13 is formed to have a larger diameter than the on-off valve seat 7 a provided on the water flow pipe 7, and the hose nipple 8, the on-off valve body 13,
- the coil spring 14 interposed therebetween is urged toward the opening / closing valve seat 7a to close the flow path 10 (water stop position).
- a positioning flange portion 13e for the O-ring 13c is provided above and below the O-ring 13c on the lower side of the on-off valve body, and the coil spring 14 abuts against the lower end surface of the flange portion 13e to open and close the on-off valve body. 13 is energized.
- valve body portion 13a When the valve body portion 13a is separated from the on-off valve seat 7a against this urging force, the flow path 10 is opened, and water can be sprayed from the water spray ports 5a and 5b (FIGS. 2 and 3). Since the valve body portion 13a of the on-off valve body 13 is formed in a stepped shape, the flow rate of water passing through the on-off valve gradually increases as the on-off valve body 13a is separated from the on-off valve seat 7a.
- an operation lever 15 is attached in front of the grip portion 3 in order to operate the on-off valve body 13.
- the operation lever 15 is attached to the lower portion of the grip portion 3 with the lower end as a fixed end and the upper end is a free end, so that the user can rotate in the front-rear direction by grasping with a hand holding the grip portion 3. ing.
- the operation lever 15 is formed in a shape curved forward, and forms an internal space with the nozzle body 6.
- thermoplastic resin such as POM (polyacetal) or ABS (acrylonitrile butadiene styrene copolymer) can be used as the material of the operation lever 15, and ABS is particularly preferable because it is more excellent in moldability. Also in this embodiment, ABS is used for such a reason.
- a bent relay lever 16 is disposed between the operation lever 15 and the nozzle body 6.
- the relay lever 16 has an arm extending upward and an arm extending rearward, and a pair of cylindrical fulcrums projecting leftward and rightward at the central bent portion.
- a portion 17 is provided and supported by the fulcrum portion 17 on the water flow pipe 7 of the nozzle body 6 so as to be rotatable.
- a first force point portion 18 that abuts on the operation lever 15 is formed at the upper end of the relay lever 16. Further, in the middle of the first force point portion 18 and the fulcrum portion 17, a second force point portion 19 that abuts on the operation lever 15 is projected forward.
- the distance L1 (see FIG. 1B) from the fulcrum part 17 to the first force point part 18 is set to 40 mm.
- L1 is preferably set to 30 to 60 mm. If L1 is less than 30 mm, the operating load of the operation lever 15 at a high water pressure stop position becomes too heavy. More preferably, L1 is 35 mm or more. Further, if L1 is larger than 60 mm, the first force point 18 protrudes forward and upward from the nozzle body 6. Therefore, the operation lever 15 covering this needs to be protruded forward. Sexuality will deteriorate. More preferably, L1 is 50 mm or less.
- the distance L2 (refer FIG.2 (b)) from the fulcrum part 17 to the 2nd power point part 19 is set to 18 mm.
- L2 is preferably set to 10 to 25 mm.
- L2 is less than 10 mm, as the amount of forward protrusion of the second force point portion 19 decreases, the region where the first force point portion 18 contacts the operation lever 15 in the rotation range of the operation lever 15 increases, Since the area where the force point portion 19 abuts on the operation lever 15 is reduced, the gripping amount (stroke) of the operation lever 15 required for moving the on-off valve from the water stop position to the fully open position is lengthened and the operability is deteriorated. End up.
- L2 is 15 mm or more. Further, when L2 is larger than 25 mm, the pressing amount of the opening / closing valve body with respect to the rotation amount of the operation lever 15 when the second force point portion 19 is in contact with the operation lever 15 is reduced, and the opening / closing valve is moved from the water stop position. The gripping amount (stroke) of the operation lever 15 required to make the fully open position becomes longer and the operability is deteriorated. More preferably, L2 is 20 mm or less.
- the ratio L2 / L1 between L1 and L2 is 0.45.
- L2 / L1 is preferably 0.20 to 0.80. If L2 / L1 is less than 0.20, the area where the first force point 18 abuts on the operation lever 15 in the rotation range of the operation lever 15 becomes large, which is necessary to change the open / close valve from the water stop position to the fully open position. The grasping amount (stroke) of the operation lever 15 becomes too large, and the operability is deteriorated. More preferably, L2 / L1 should be 0.30 or more. Further, when L2 / L1 is larger than 0.80, L2 becomes too large.
- L2 / L1 should be 0.60 or less.
- the tongue piece 21 extends forward and upward in the middle between the first force point portion 18 and the second force point portion 19. While the user rotates the operation lever 15 of the watering nozzle 1, the elastic tongue piece 21 comes into contact with the operation lever 15 and cushions, thereby preventing the relay lever 16 and the operation lever 15 from rattling. As a result, operability is improved. That is, the tongue piece 21 indicates the relative positional relationship between the relay lever 16 and the operation lever 15 in the direction substantially perpendicular to the longitudinal direction of the relay lever 16 when the operation lever 15 of the watering nozzle 1 is rotated. It has an elastic contact function that can be changed while bringing 16 and the operating lever 15 into contact with each other.
- an elastically deformable portion may be provided integrally with the relay lever 16 as in the present embodiment, or an elastically deformable portion may be provided integrally with the operation lever 15.
- An elastic deformation member different from the operation lever 15 may be provided.
- an action point part 20 divided into two parts is formed so as to be in contact with the upper end surface of the flange part 13e of the on-off valve body.
- an angle ⁇ 1 (see FIG. 5I) formed by a straight line connecting the fulcrum part 17 and the first force point part 18 and a straight line connecting the fulcrum part 17 and the action point part 20 is set to 108 degrees.
- ⁇ 1 is preferably set to 90 to 130 degrees. When ⁇ 1 is less than 90 degrees, it is necessary to lengthen L1 considerably in order to bring the first force point 18 into contact with the operation lever 15 at the water stop position.
- the relay lever 16 cannot be properly accommodated in the limited internal space, for example, the 18 contacts the nozzle body 6 to inhibit the rotation. More preferably, ⁇ 1 is 95 degrees or more, particularly 100 degrees or more.
- ⁇ 1 When ⁇ 1 is larger than 130 degrees, the first force point 18 protrudes forward and upward from the nozzle body 6, and therefore the operation lever 15 covering this needs to protrude forward, and operability such as finger hooking. Will get worse. More preferably, ⁇ 1 should be 120 degrees or less, particularly 110 degrees or less.
- an angle ⁇ 2 (see FIG. 5 (i)) formed by a straight line connecting the fulcrum part 17 and the second force point part 19 and a straight line connecting the fulcrum part 17 and the action point part 20 is 133 degrees.
- Is set to ⁇ 2 is preferably set to 110 to 160 degrees.
- ⁇ 2 is less than 110 degrees, the pressing amount of the opening / closing valve body with respect to the rotation amount of the operating lever 15 is reduced, and the amount of gripping (stroke) of the operating lever 15 necessary for moving the opening / closing valve from the water stop position to the fully open position. Becomes longer and the operability deteriorates.
- ⁇ 2 should be 120 degrees or more, particularly 125 degrees or more.
- ⁇ 2 When ⁇ 2 is larger than 160 degrees, the second force point portion 19 protrudes forward and upward from the nozzle body 6, and therefore, the operation lever 15 covering this needs to protrude forward, and operability such as finger hooking. Will get worse. Moreover, there exists a possibility that the intensity
- the ratio ⁇ 2 / ⁇ 1 between the magnitudes of ⁇ 1 and ⁇ 2 is approximately 1.23.
- ⁇ 2 / ⁇ 1 is preferably set to 1.03 to 1.60.
- ⁇ 2 / ⁇ 1 is less than 1.03, the region where the second force point 19 contacts the operation lever 15 in the rotation range of the operation lever 15 becomes too small, so that the on-off valve is changed from the water stop position to the fully open position. Therefore, the gripping amount (stroke) of the operation lever 15 necessary for the operation becomes longer and the operability is deteriorated.
- ⁇ 2 / ⁇ 1 should be 1.10 or more, particularly 1.20 or more.
- ⁇ 2 / ⁇ 1 When ⁇ 2 / ⁇ 1 is larger than 1.60, the second force point portion 19 protrudes forward and upward from the nozzle body 6, and therefore, the operation lever 15 covering this needs to protrude forward. Usability will deteriorate. Moreover, there exists a possibility that the intensity
- the relay lever 16 can be made of a thermoplastic resin such as PP (polypropylene), POM, ABS, etc., and has excellent wear resistance and a high elastic modulus. preferable. Also in this embodiment, POM is used for this reason.
- an opening 7 b is formed on the front surface of the grip portion 3 side portion so that the action point portion 20 is brought into contact with the on-off valve body 13.
- the two O-rings 13 c and 13 c are always positioned so as to sandwich the opening 7 b, so that water does not leak from the opening 7 b to the outside of the water flow pipe 7.
- a support plate portion 7c for rotatably supporting the relay lever 16 extends forward, and the fulcrum portion of the relay lever 16 is supported. 17 is inserted through the hole of the support plate portion 7c.
- an operation lever receiver 7d for supporting the operation lever 15 so as to be rotatable extends forward, and the nozzle body 6 including the water flow pipe 7 is included.
- the operation lever 15 can be attached to be able to approach and separate by turning.
- the flow rate adjusting valve body 23 is provided by rotating the flow rate operating member 22 left and right with the thumb of the hand holding the grip portion 3 by the user.
- a flow rate adjusting valve for rotation is provided.
- the amount of water spray is finely adjusted by increasing or decreasing the area where the notch formed in the side peripheral surface of the cylindrical flow regulating valve body 23 and the flow path 10 on the nozzle portion 4 side match. can do.
- the opening / closing valve body 13 When the user grasps the operation lever 15 from the water stop position, the opening / closing valve body 13 is separated from the opening / closing valve seat 7a against the biasing force of the coil spring 14 through the rotation of the relay lever 16, and the opening / closing valve is passed through. Can be in a water state. In the water stop position, a high water pressure consisting of a hydrostatic pressure and a load proportional to the tap water pressure is applied to the on-off valve body, but the first force point portion 18 formed farthest from the fulcrum portion 17 abuts on the operation lever 15. Therefore, the user can open the on-off valve only with a relatively light force.
- the second force point portion 19 in addition to the first force point portion 18 also abuts the inner surface of the operation lever 15 (FIG. 2B).
- the second force point portion 19 comes into contact with the inner surface of the operation lever 15 and transmits a force for pressing the on-off valve body 13 (FIG. 3B).
- the valve body portion 13a is relatively separated from the on-off valve seat 7a when the operation lever 15 is rotated by a certain amount. Can be made.
- the gripping amount (stroke) of the operating lever 15 necessary for opening the on-off valve from the partially opened position (FIG. 2) to the fully opened position (FIG. 3) can be reduced, and the operability for the user is improved. improves.
- the stroke of the operation lever 15 for opening the on-off valve from the water stop position to the fully open position was 11 degrees, but in the watering nozzle 1 of the present embodiment, The stroke of the operation lever 15 for opening from the water stop position to the fully open position could be reduced to 7 degrees.
- the clearance C1 between the first force point 18 and the nozzle body 6 is set to 18.5 mm.
- C1 is preferably set to 15.0 to 25.0 mm. If C1 is less than 15.0 mm, the on-off valve body 13 cannot be sufficiently separated from the on-off valve seat 7a even if the operating lever 15 is grasped to the limit, and the flow rate of water becomes insufficient. More preferably, C1 should be 16.0 mm or more, particularly 17.5 mm or more.
- C1 when C1 is larger than 25.0 mm, the first force point portion 18 protrudes forward of the nozzle body 6, so that the operation lever 15 is inevitably protruded largely forward of the nozzle body 6, and the finger hook or the like. The operability of will deteriorate. More preferably, C1 should be 21.0 mm or less, particularly 19.0 mm or less.
- the clearance C2 between the first force point 18 and the nozzle body 6 is set to 16.0 mm.
- C2 is preferably set to 8.0 to 20.0 mm.
- C2 is less than 8.0 mm, the range in which the second force point portion 19 abuts on the operation lever 15 becomes too small, and the gripping amount of the operation lever 15 required to bring the on-off valve from the water stop position to the fully open position. (Stroke) is lengthened and operability is deteriorated.
- C2 should be 10.0 mm or more, particularly 13.0 mm or more.
- C2 should be 18.0 mm or less, particularly 16.5 mm or less.
- the clearance C3 between the first force point 18 and the nozzle body 6 is set to 4.7 mm.
- C3 is preferably set to 10 mm or less. If C3 is larger than 10 mm, the on-off valve body 13 cannot be sufficiently separated from the on-off valve seat 7a even at the fully open position, and the flow rate of water becomes insufficient. More preferably, C3 is 8 mm or less, particularly 6.5 mm or less.
- the clearance ratio C3 / C1 between the water stop position and the fully open position is 0.25.
- C3 / C1 should be 0.35 or less. If C3 / C1 is larger than 0.35, the on-off valve body 13 cannot be sufficiently separated from the on-off valve seat 7a even at the fully open position, and the flow rate of water becomes insufficient. More preferably, C3 / C1 should be 0.30 or less.
- the distance M1 (see FIG. 7) from the fixed end at the lower end, which is the rotation center of the operation lever 15, to the first force point 18 of the relay lever 16 is set to 70 mm.
- M1 is preferably set to 55 to 100 mm. If M1 is less than 55 mm, L1 is also shortened, so that the operating load of the operation lever 15 at the high water pressure stop position becomes heavy, and the operability is deteriorated. More preferably, M1 is 60 mm or more, particularly 65 mm or more.
- M1 is made larger than 100 mm, L1 also becomes longer, so that the gripping amount (stroke) of the operating lever 15 required to move the on-off valve from the water stop position to the partially open position becomes longer and the operability deteriorates. End up. More preferably, M1 is 85 mm or less, particularly 75 mm or less.
- the distance M2 (see FIG. 7) from the fixed end at the lower end, which is the rotation center of the operation lever 15, to the second force point portion 19 of the relay lever 16 is set to 45 mm. ing. M2 is preferably set to 30 to 70 mm. When M2 is less than 30 mm, as the amount of forward protrusion of the second force point portion 19 decreases, the region where the first force point portion 18 abuts on the operation lever 15 in the rotation range of the operation lever 15 increases.
- M2 is 38 mm or more, particularly 42 mm or more. If M2 is made larger than 70 mm, M1 will inevitably be increased, and the amount of stroke (stroke) of the operating lever 15 required to move the on / off valve from the water stop position to a partly open position becomes longer. The operability will deteriorate.
- M2 is 60 mm or less, particularly 50 mm or less.
- a distance M3 between a fixed end at the lower end serving as a rotation center of the operation lever 15 and a fulcrum portion 17 serving as a rotation center of the relay lever 16 is set to 30 mm.
- M3 is preferably set to 10 mm or more. When M3 is less than 10 mm, the operating load of the operation lever 15 at the high water pressure water stop position becomes heavy. More preferably, M3 is 20 mm or more. Note that if M3 is too large, the watering nozzle is likely to increase in size, so M3 is preferably 60 mm or less, more preferably 50 mm or less, and particularly preferably 40 mm or less.
- the length ratio M1 / L1 is 1.75.
- M1 / L1 is preferably set to be 1.20 to 3.00. When M1 / L1 is less than 1.20, the operation load at the high water pressure stop position becomes heavy. More preferably, M1 / L1 should be 1.30 or more, particularly 1.50 or more. If M1 / L1 becomes larger than 3.00, L2 must be set small accordingly, and the stroke amount for pushing down the opening / closing valve body 13 becomes insufficient. Therefore, even if the operating lever 15 is held to the limit, the opening / closing valve body 13 is moved. It cannot be sufficiently separated from the on-off valve seat 7a, and the flow rate of water becomes insufficient. More preferably, M1 / L1 should be 2.80 or less, particularly 2.00 or less.
- the length ratio M2 / L2 is 2.49.
- M2 / L2 is preferably 1.40 to 7.00.
- M2 / L2 is less than 1.40, the operating load of the operation lever 15 becomes too heavy even when the on-off valve is partially open.
- M2 / L2 should be 1.50 or more, particularly 2.00 or more.
- M2 / L2 is larger than 7.00, the watering nozzle 1 is enlarged, and operability such as finger hooking is deteriorated. More preferably, M2 / L2 is 6.00 or less, particularly 3.50 or less.
- the partially open position (water flow position) where the water pressure applied to the valve body portion 13a is small the second force point portion 19 close to the fulcrum portion 17 abuts against the operation lever 15 to increase the pressing amount of the valve body portion 13a. Therefore, the operating load of the operation lever 15 can be effectively reduced and the on-off valve can be opened and closed effectively. Further, it is not necessary to add special parts compared to the conventional watering nozzle, and it is only necessary to partially change the shape of the relay lever 16, so that the operating load of the operation lever 15 can be reduced at low cost. .
- the relay lever 16 is provided with the first force point portion 18 and the second force point portion 19, but three or more force point portions having different distances from the fulcrum portion 17 are provided, and the operation lever 15 is moved to the water stop position. From the fulcrum portion 17 to the operation lever 15 in order from the fulcrum portion 17. Further, when the arm extending upward from the relay lever 16 is formed in a curved shape that protrudes forward, and the operation lever 15 is gripped from the water stop position to the fully open position, the power point portion that contacts the operation lever 15 is You may make it move continuously from the front-end
- the relay lever 16 is provided with the first force point portion 18 and the second force point portion 19, but only one force point portion is formed, and two or more actions having different distances from the fulcrum portion 17 are formed instead.
- a point portion may be provided.
- the operating point 15 formed closest to the fulcrum portion 17 is in contact with the on-off valve body at the water stop position and the user grasps the operating lever 15 to partially open the on-off valve.
- the other action point portions abut on the on-off valve body in order from the one closer to the fulcrum portion 17.
- the operating load of the operation lever 15 can be effectively reduced and the on-off valve can be opened and closed effectively.
- the lower end of the operation lever 15 is a fixed end and the upper end is a free end.
- the upper end of the operation lever 15 may be attached to the nozzle body 6 as a fixed end, and the lower end may be a free end.
- the first force point portion 18 far from the fulcrum portion 17 of the relay lever 16 contacts the operation lever 15 to reduce the operating load of the operation lever 15 and to fix the operation lever 15 to the fixed end.
- the distance from the (fulcrum point on the operating lever 15) to the contact point with the first force point 18 (the operating point on the operating lever 15) is the distance from the fixed end to the grip portion of the user (the power point on the operating lever 15). Therefore, the operating load of the operation lever 15 can be further reduced.
- the opening / closing valve when the opening / closing valve is partially opened and the second force point portion 19 close to the fulcrum portion 17 is in contact with the operation lever 15, the second force point portion 19 from the fixed end of the operation lever 15 (the fulcrum in the operation lever 15). Since the distance to the contact point (the point of action on the operation lever 15) with respect to the distance from the fixed end to the gripping portion of the user (the force point on the operation lever 15) is relatively long, the operation lever 15 is fixed by a certain amount. When rotated, the valve body 13a can be further separated from the on-off valve seat 7a.
- operation lever 15 is only required to be movably attached to the nozzle body 6, instead of being attached so as to rotate, for example, it may be attached so as to be slidable back and forth with respect to the nozzle body 6. Good.
Landscapes
- Nozzles (AREA)
- Bathtubs, Showers, And Their Attachments (AREA)
Abstract
Description
また、ノズル本体6(通水パイプ7)の前方に操作レバー15を接近離間可能に取り付け、操作レバー15の接近離間に連動して開閉弁体13を開閉弁座7aに接近離間させ、開閉弁を開閉するものがあった。
図9に示すように、側面視略L字形に形成された中継レバー26は、ノズル本体6に回動可能に支持される支点部27を屈曲部分に形成し、操作レバー15に当接する力点部28を一端に形成し、開閉弁体13に当接する作用点部29を他端に形成していた。
このような散水ノズルで使用者が操作レバー15を握り込むと、力点部28が操作レバー15の内面に押されて中継レバー26が回動し、作用点部29が開閉弁体13を開閉弁座7aから離間する方向に押して開放することができた。
従来の散水ノズル25において、弁閉位置(止水位置)では静水圧と水道水圧に比例した負荷とが開閉弁体13にかかるため、止水位置から通水に切り換える際には操作レバー15の作動荷重が重くなるという問題があった。
しかし、全開位置で開閉弁体13が水の流れを阻害しない大流量の開閉弁を設けるには、開閉弁体13の離間(押下)量を大きくとる必要があるため、中継レバー26の屈折角度や止水位置での中継レバー26のノズル本体6への取り付け角度には制約が生じる。
このような制約のもとで支点部27から力点部28までの距離を長くすると、中継レバー16が大型化して散水ノズル25の前方に突出することになるため、これを覆う操作レバー15も前方に突出させる必要が生じ、指掛かり等の操作性が悪化してしまうという問題があった。
これにより散水ノズルには、ノズル本体の開閉弁座に環状パッキンが接近離間する第一の弁と、環状パッキンと開閉弁体の弁体部とが接近離間する第二の弁とが形成される。
また、水道水圧が高い場合には、止水時に水圧によって第二の弁において開閉弁体の弁体部が環状パッキンに強く食い込んだ状態となっており、第二の弁を開放する際にも大きな力を必要とし、操作レバーの作動荷重をあまり軽減することができないという問題があった。
第1の発明は、導入口から散水口までを接続する水の流路を内部に形成したノズル本体と、このノズル本体に接近離間可能に取り付けた操作レバーと、上記流路の経路中に配置されて上記流路を開閉する開閉弁と、上記操作レバーおよび上記開閉弁の間に配置され、上記ノズル本体に回動可能に支持される支点部、上記操作レバーに当接する力点部、および上記開閉弁に当接する作用点部を有する中継レバーとを具備し、上記操作レバーと上記ノズル本体との位置関係に応じて上記中継レバーが回動し、上記開閉弁を開閉する散水ノズルであって、上記中継レバーには、上記支点部からの距離が互いに異なる二つ以上の上記力点部を設けて、上記開閉弁の止水位置では上記支点部から最も遠くに形成された上記力点部を上記操作レバーに当接させ、上記開閉弁の開放度が所定の度合いよりも大きくなる位置では他の上記力点部を上記操作レバーに当接させることを特徴とする。
また、上記開閉弁の開放度が所定の度合いよりも大きくなる位置では他の上記力点部を上記操作レバーに当接させることにより、支点部に近い他の力点部が操作レバーに当接して開閉弁の作動量を大きくすることができ、操作レバーの小さなストローク量で開閉弁を効果的に開閉することができる。
また、上記開閉弁の開放度が所定の度合いよりも大きくなる位置では他の上記作用点部を上記開閉弁に当接させることにより、支点部から遠い他の作用点部が開閉弁に当接して開閉弁の作動量を大きくすることができ、操作レバーの小さなストローク量で開閉弁を効果的に開閉することができる。
また、これらの効果を実現するために、操作レバーの回動範囲において、第一力点部が操作レバーに当接する領域と第二力点部が操作レバーに当接する領域との割合を適切にすることができる。
この散水ノズル1は、園芸、農業、清掃、その他の用途において、ホースを介して水道等の給水設備の先端に接続されて散水を行う器具であって、使用者が手に持って使用するものである。
ノズル本体6の内部には、導入口2から散水口5a、5bまで延在する水の流路10が形成されている。
ノズル本体6は、屈曲した通水パイプ7に、ホースニップル8や吐水ヘッド9を接続し、外周を覆う複数のカバーを組み付けてなるが、これらのうちいくつかについて一体に成形したものであってもよく、又、これらのうちいくつかについて複数部材を結合してもよい。
グリップ部3の基端部3aでは、ホースに取り付けられた受け具(図示せず)と連結するための凹凸やOリングを外周面に設けるとともに、その中心に給水設備からの水を導入する導入口2を開口したホースニップル8が通水パイプ7の下方に取り付けられている。
グリップ部3の向きは完全に垂直であってもよいが、図1のように垂直な向きから傾斜して、グリップ部3の延在方向とは交差する向きで上方に延びたものであってもよい。
吐水ヘッド9は、通水パイプ7に接続される固定部材11と、この固定部材11の先端に取り付けられ、シャワー散水口5aおよびストレート散水口5bを形成した螺進部材12とからなる。
固定部材11の周面には通水パイプ7から供給された水を螺進部材12側へ流すための切換口11aが形成され、螺進部材12は固定部材11に対し、螺進によって前後動することができるように取り付けられている。これにより、固定部材11に対する螺進部材12の位置によって、切換口11aをシャワー散水口5aまたはストレート散水口5bに選択的に連通させ、シャワー散水とストレート散水を切り換えることができる。
開閉弁では、通水パイプ7のグリップ部3側の流路10に開閉弁体13を配置している。開閉弁体13は、図4に示すように、通水パイプ7に内接する有蓋円筒状に形成され、蓋の上部に突起状の弁体部13aを形成している。
図3(b)に示すように、弁体部13aには、開閉弁座7aに当接して流路10を閉塞するためのOリング13bが取り付けられている。
開閉弁体の下側のOリング13cの上下には、Oリング13cの位置決め用のフランジ部13eが周設されており、コイルスプリング14はこのフランジ部13eの下端面に当接して開閉弁体13を付勢する。
開閉弁体13の弁体部13aが段差形状に形成されていることにより、開閉弁座7aから開閉弁体13aが離間するのにしたがって、開閉弁を通過する水の流量が徐々に増加する。
操作レバー15は前方に湾曲した形状に形成されており、ノズル本体6との間に内部空間を形成している。
本実施形態においても、このような理由からABSを用いた。
中継レバー16は、図5に示すように、上方に延設されたアームと後方に延設されたアームとを有し、中心の屈曲部分には左右側方に突出する一対の円筒状の支点部17を設けて、この支点部17でノズル本体6の通水パイプ7に回動可能に支持されている。
中継レバー16の上端には、操作レバー15に当接する第一力点部18が形成されている。また、第一力点部18と支点部17との中間では、操作レバー15に当接する第二力点部19が前方に突設されている。
L1は、30~60mmに設定するのがよい。
L1を30mm未満にすると高水圧の止水位置での操作レバー15の作動荷重が重くなりすぎてしまう。より好ましくは、L1を35mm以上とするのがよい。
また、L1を60mmよりも大きくすると、第一力点部18がノズル本体6から前上方に突出することになるため、これを覆う操作レバー15も前方に突出させる必要があり、指掛かり等の操作性が悪化してしまう。より好ましくは、L1を50mm以下とするのがよい。
L2は、10~25mmに設定するのがよい。
L2を10mm未満とすると、第二力点部19の前方突出量が小さくなることに伴い、操作レバー15の回動範囲において第一力点部18が操作レバー15に当接する領域が大きくなり、第二力点部19が操作レバー15に当接する領域が小さくなるため、開閉弁を止水位置から全開位置にするのに必要な操作レバー15の握り込み量(ストローク)が長大化して操作性が悪化してしまう。また、開閉弁の一部開放状態であっても操作レバー15の作動荷重が大きくなりすぎてしまう。より好ましくは、L2を15mm以上とするのがよい。
また、L2を25mmよりも大きくすると、第二力点部19が操作レバー15に当接しているときの操作レバー15の回動量に対する開閉弁体の押下量が小さくなり、開閉弁を止水位置から全開位置にするのに必要な操作レバー15の握り込み量(ストローク)が長大化して操作性が悪化してしまう。より好ましくは、L2を20mm以下とするのがよい。
L2/L1は、0.20~0.80となるようにするのが好ましい。
L2/L1が0.20未満では、操作レバー15の回動範囲において第一力点部18が操作レバー15に当接する領域が大きくなり、開閉弁を止水位置から全開位置にするのに必要な操作レバー15の握り込み量(ストローク)が大きくなりすぎて操作性が悪化してしまう。より好ましくは、L2/L1を0.30以上となるようにするのがよい。
また、L2/L1が0.80よりも大きくなると、L2が大きくなりすぎるため、第二力点部19が操作レバー15に当接しているときの操作レバー15の回動量に対する開閉弁体の押下量が小さくなり、開閉弁を止水位置から全開位置にするのに必要な操作レバー15の握り込み量(ストローク)が長大化して操作性が悪化してしまう。より好ましくは、L2/L1を0.60以下となるようにするのがよい。
支点部17から後方に延設されたアームの先端には、開閉弁体のフランジ部13eの上端面に当接できるように二俣に分かれた作用点部20が形成されている。
θ1は、90~130度に設定するのがよい。
θ1を90度未満にすると、止水位置で第一力点部18を操作レバー15に当接させるためにはL1をかなり長大化させる必要があり、操作レバー15を握り込む途中で第一力点部18がノズル本体6に接触して回動を阻害するなど、中継レバー16を限られた内部空間に適切に収納できなくなってしまう。より好ましくは、θ1を95度以上、特に100度以上にするのがよい。
θ1を130度よりも大きくすると、第一力点部18がノズル本体6から前上方に突出することになるため、これを覆う操作レバー15も前方に突出させる必要があり、指掛かり等の操作性が悪化してしまう。より好ましくは、θ1を120度以下、特に110度以下にするのがよい。
θ2は、110~160度に設定するのがよい。
θ2を110度未満にすると、操作レバー15の回動量に対する開閉弁体の押下量が小さくなり、開閉弁を止水位置から全開位置にするのに必要な操作レバー15の握り込み量(ストローク)が長大化して操作性が悪化してしまう。より好ましくは、θ2を120度以上、特に125度以上にするのがよい。
θ2を160度よりも大きくすると、第二力点部19がノズル本体6から前上方に突出することになるため、これを覆う操作レバー15も前方に突出させる必要があり、指掛かり等の操作性が悪化してしまう。また、突出する第二力点部19付近の強度が低下するおそれがある。より好ましくは、θ2を150度以下、特に140度以下にするのがよい。
θ2/θ1は、1.03~1.60となるようにするのがよい。
θ2/θ1が1.03未満となると、操作レバー15の回動範囲において第二力点部19が操作レバー15に当接する領域が小さくなりすぎるため、開閉弁を止水位置から全開位置にするのに必要な操作レバー15の握り込み量(ストローク)が長大化して操作性が悪化してしまう。より好ましくは、θ2/θ1が1.10以上、特に1.20以上となるようにするのがよい。
θ2/θ1が1.60より大きくなると、第二力点部19がノズル本体6から前上方に突出することになるため、これを覆う操作レバー15も前方に突出させる必要があり、指掛かり等の操作性が悪化してしまう。また、突出する第二力点部19付近の強度が低下するおそれがある。より好ましくは、θ2/θ1が1.50以下、特に1.40以下となるようにするのがよい。
本実施形態においても、このような理由からPOMを用いた。
また、通水パイプ7のグリップ部3側の基端付近からは、操作レバー15を回動可能に支持するための操作レバー受け7dが前方に延出され、通水パイプ7を含むノズル本体6に対し、操作レバー15を回動によって接近離間可能に取り付けることができる。
この流量調整弁では、筒状の流量調整弁体23の側周面に形成された切り欠きと、ノズル部4側の流路10とが合致する面積を増減させることにより、散水量を微調整することができる。
止水位置では静水圧と水道水圧に比例した負荷とからなる高水圧が開閉弁体にかかっているが、支点部17から最も遠くに形成された第一力点部18が操作レバー15に当接しているため、使用者は比較的軽い力を込めるだけで開閉弁を開放することができる。
このとき、支点部17に近い第二力点部19が操作レバー15に当接しているため、操作レバー15を一定量回動させた際に弁体部13aを開閉弁座7aから比較的大きく離間させることができる。そのため、開閉弁を一部開放位置(図2)から全開位置(図3)まで開放するために必要な操作レバー15の握り込み量(ストローク)を小さくすることができ、使用者の操作性が向上する。
図8、図9に示す従来の散水ノズル25では、開閉弁を止水位置から全開位置まで開放するための操作レバー15のストロークは11度であったが、本実施形態の散水ノズル1では、止水位置から全開位置まで開放するための操作レバー15のストロークを7度まで縮小することができた。
支点部17に近い第二力点部19が操作レバー15に当接していると、支点部17からの距離が第一力点部18よりも短くなるため、弁体部13aを梃子によって移動させるために必要な操作レバー15の作動荷重を大きくする方向に作用する。しかし、このとき開閉弁は一部開放されて水が下流側へと流れており、弁体部13aを開閉弁座へ押し付けようとする水圧が弱くなっているため、総合的な操作レバー15の作動荷重はそれほど大きくならない。
C1は、15.0~25.0mmに設定するのがよい。
C1を15.0mm未満にすると、操作レバー15を限界まで握り込んでも開閉弁体13を開閉弁座7aから十分に離間させることができず、水の流量が不足してしまう。より好ましくは、C1を16.0mm以上、特に17.5mm以上にするのがよい。
また、C1を25.0mmより大きくすると、第一力点部18がノズル本体6の前方に突出するため、必然的に操作レバー15もノズル本体6の前方に大きく突出させることになり、指掛かり等の操作性が悪化してしまう。より好ましくは、C1を21.0mm以下、特に19.0mm以下にするのがよい。
C2は、8.0~20.0mmに設定するのがよい。
C2を8.0mm未満にすると、第二力点部19が操作レバー15に当接する範囲が小さくなりすぎて、開閉弁を止水位置から全開位置にするのに必要な操作レバー15の握り込み量(ストローク)が長大化して操作性が悪化してしまう。より好ましくは、C2を10.0mm以上、特に13.0mm以上にするのがよい。
また、C2を20.0mmより大きくすると、必然的にC1も大きくせざるをえなくなり、操作レバー15をノズル本体6の前方に大きく突出させることになり、指掛かり等の操作性が悪化してしまう。より好ましくは、C2を18.0mm以下、特に16.5mm以下とするのがよい。
C3は10mm以下に設定するのがよい。
C3が10mmよりも大きくなると、全開位置でも開閉弁体13を開閉弁座7aから十分に離間させることができず、水の流量が不足してしまう。より好ましくは、C3を8mm以下、特に6.5mm以下にするのがよい。
C3/C1は、0.35以下となるようにするのがよい。
C3/C1が0.35よりも大きくなると、全開位置でも開閉弁体13を開閉弁座7aから十分に離間させることができず、水の流量が不足してしまう。より好ましくは、C3/C1が0.30以下となるようにするのがよい。
M1は、55~100mmに設定するのがよい。
M1を55mm未満にすると、L1も短くなるため、高水圧の止水位置における操作レバー15の作動荷重が重くなってしまい、操作性が悪化してしまう。より好ましくは、M1を60mm以上、特に65mm以上にするのがよい。
M1を100mmよりも大きくすると、L1も長くなるため、開閉弁を止水位置から一部開放位置にするのに必要な操作レバー15の握り込み量(ストローク)が長大化して操作性が悪化してしまう。より好ましくは、M1を85mm以下、特に75mm以下にするのがよい。
M2は、30~70mmに設定するのがよい。
M2を30mm未満にすると、第二力点部19の前方突出量が小さくなることに伴い、操作レバー15の回動範囲において第一力点部18が操作レバー15に当接する領域が大きくなり、第二力点部19が操作レバー15に当接する領域が小さくなるため、開閉弁を止水位置から全開位置にするのに必要な操作レバー15の握り込み量(ストローク)が長大化して操作性が悪化してしまう。より好ましくは、M2を38mm以上、特に42mm以上にするのがよい。
M2を70mmよりも大きくすると、必然的にM1も大きくせざるをえなくなり、開閉弁を止水位置から一部開放位置にするのに必要な操作レバー15の握り込み量(ストローク)が長大化して操作性が悪化してしまう。また、L2も大きくなるため、開閉弁を一部開放位置から全開位置にするのに必要な操作レバー15の握り込み量(ストローク)が長大化して操作性が悪化してしまう。より好ましくは、M2を60mm以下、特に50mm以下にするのがよい。
M3は、10mm以上に設定するのがよい。
M3を10mm未満にすると、高水圧の止水位置における操作レバー15の作動荷重が重くなってしまう。より好ましくは、M3を20mm以上とするのがよい。なお、M3を大きくしすぎると散水ノズルの大型化をまねきやすいので、M3は60mm以下、さらに50mm以下、特に40mm以下とするのがよい。
M1/L1は、1.20~3.00となるようにするのがよい。
M1/L1が1.20未満になると、高水圧の止水位置における作動荷重が重くなってしまう。より好ましくは、M1/L1が1.30以上、特に1.50以上となるようにするのがよい。
M1/L1が3.00より大きくなると、それに伴いL2を小さく設定せざるを得ず、開閉弁体13を押し下げるストローク量が足りなくなるため、操作レバー15を限界まで握り込んでも開閉弁体13を開閉弁座7aから十分に離間させることができず、水の流量が不足してしまう。より好ましくは、M1/L1が2.80以下、特に2.00以下となるようにするのがよい。
M2/L2は、1.40~7.00となるようにするのがよい。
M2/L2が1.40未満になると、開閉弁の一部開放状態であっても操作レバー15の作動荷重が重くなりすぎてしまう。より好ましくは、M2/L2が1.50以上、特に2.00以上となるようにするのがよい。
M2/L2が7.00より大きくなると、散水ノズル1が大型化してしまい、指掛り等の操作性が悪化してしまう。より好ましくは、M2/L2が6.00以下、特に3.50以下となるようにするのがよい。
また、従来の散水ノズルに比べて特別な部品を追加する必要がなく、中継レバー16の形状を部分的に変更するだけでよいため、低コストで操作レバー15の作動荷重を軽減することができる。
第一実施形態では中継レバー16に第一力点部18と第二力点部19とを設けたが、支点部17からの距離の異なる力点部を三つ以上設けて、操作レバー15を止水位置から全開位置まで握り込むと、支点部17から最も遠い力点部から順番に操作レバー15に当接するようにしてもよい。
また、中継レバー16のうち上方に延設されたアームを前方に凸な湾曲形状に形成し、操作レバー15を止水位置から全開位置まで握り込むと、操作レバー15に当接する力点部が、当該アームの先端から基端へと連続的に移り替わるようにしてもよい。
また、第一実施形態において、第二力点部19から支点部17までの区間だけを湾曲形状に形成してもよい。
第一実施形態では、中継レバー16に第一力点部18と第二力点部19とを設けたが、力点部を一つだけ形成し、代わりに支点部17からの距離が異なる二以上の作用点部を設けてもよい。
この場合には、止水位置では支点部17の最も近くに形成された作用点部が開閉弁体に当接するようにし、使用者が操作レバー15を握り込んで開閉弁を一部開放した後には、他の作用点部が支点部17に近いものから順に開閉弁体に当接するようにする。
これにより、第一実施形態と同様に、操作レバー15の作動荷重を効果的に軽減することができるとともに開閉弁の開閉を効果的に行うことができる。
第一実施形態では操作レバー15の下端を固定端とし上端を自由端としたが、操作レバー15の上端をノズル本体6に取り付けて固定端とし、下端を自由端としてもよい。
この場合には、止水位置では、中継レバー16の支点部17から遠い第一力点部18が操作レバー15に当接して操作レバー15の作動荷重が軽減されるとともに、操作レバー15の固定端(操作レバー15における支点)から第一力点部18との当接点(操作レバー15における作用点)までの距離が、固定端から使用者の把持部分(操作レバー15における力点)までの距離に対して比較的短くなるので、操作レバー15の作動荷重をさらに軽減することができる。
2 接続口
5a (シャワー)散水口
5b (ストレート)散水口
6 ノズル本体
7 通水パイプ
7a 開閉弁座
7b 開口
7c 支持板部
13 開閉弁体
13a 弁体部
13b Oリング
13c Oリング
13d 通水口
13e フランジ部
14 コイルスプリング
15 操作レバー
16 中継レバー
17 支点部
18 第一力点部
19 第二力点部
20 作用点部
21 舌片
25 散水ノズル
26 中継レバー
27 支点部
28 力点部
29 作用点部
Claims (3)
- 導入口から散水口までを接続する水の流路を内部に形成したノズル本体と、
このノズル本体に接近離間可能に取り付けた操作レバーと、
上記流路の経路中に配置されて上記流路を開閉する開閉弁と、
上記操作レバーおよび上記開閉弁の間に配置され、上記ノズル本体に回動可能に支持される支点部、上記操作レバーに当接する力点部、および上記開閉弁に当接する作用点部を有する中継レバーとを具備し、
上記操作レバーと上記ノズル本体との位置関係に応じて上記中継レバーが回動し、上記開閉弁を開閉する散水ノズルであって、
上記中継レバーには、上記支点部からの距離が互いに異なる二つ以上の上記力点部を設けて、
上記開閉弁の止水位置では上記支点部から最も遠くに形成された上記力点部を上記操作レバーに当接させ、上記開閉弁の開放度が所定の度合いよりも大きくなる位置では他の上記力点部を上記操作レバーに当接させることを特徴とする散水ノズル。 - 導入口から散水口までを接続する水の流路を内部に形成したノズル本体と、
このノズル本体に接近離間可能に取り付けた操作レバーと、
上記流路の経路中に配置されて上記流路を開閉する開閉弁と、
上記操作レバーおよび上記開閉弁の間に配置され、上記ノズル本体に回動可能に支持される支点部、上記操作レバーに当接する力点部、および上記開閉弁に当接する作用点部を有する中継レバーとを具備し、
上記操作レバーと上記ノズル本体との位置関係に応じて上記中継レバーが回動し、上記開閉弁を開閉する散水ノズルであって、
上記中継レバーには、上記支点部からの距離が互いに異なる二つ以上の上記作用点部を設けて、
上記開閉弁の止水位置では上記支点部の最も近くに形成された上記作用点部を上記開閉弁に当接させ、上記開閉弁の開放度が所定の度合いよりも大きくなる位置では他の上記作用点部を上記開閉弁に当接させることを特徴とする散水ノズル。 - 上記中継レバーに、上記支点部から遠い第一力点部と、上記支点部に近い第二力点部とを設け、
上記支点部から上記第二力点部までの距離/上記支点部から上記第一力点部までの距離が、0.20~0.80であることを特徴とする請求項1記載の散水ノズル。
Priority Applications (3)
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CN201280067699.2A CN104066516B (zh) | 2012-03-05 | 2012-12-17 | 散水喷头 |
KR1020147025144A KR20140138156A (ko) | 2012-03-05 | 2012-12-17 | 살수 노즐 |
DE112012005980.8T DE112012005980B4 (de) | 2012-03-05 | 2012-12-17 | Wassersprühdüse |
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JP2012-048344 | 2012-03-05 | ||
JP2012048344A JP5619053B2 (ja) | 2012-03-05 | 2012-03-05 | 散水ノズル |
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WO2013132720A1 true WO2013132720A1 (ja) | 2013-09-12 |
Family
ID=49116217
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PCT/JP2012/082609 WO2013132720A1 (ja) | 2012-03-05 | 2012-12-17 | 散水ノズル |
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JP (1) | JP5619053B2 (ja) |
KR (1) | KR20140138156A (ja) |
CN (1) | CN104066516B (ja) |
DE (1) | DE112012005980B4 (ja) |
WO (1) | WO2013132720A1 (ja) |
Cited By (3)
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WO2015139757A1 (en) * | 2014-03-20 | 2015-09-24 | Husqvarna Ab | Water application device with critical area protectors |
WO2015139759A1 (en) * | 2014-03-20 | 2015-09-24 | Husqvarna Ab | Frost compensator for a water application device |
WO2015139758A1 (en) * | 2014-03-20 | 2015-09-24 | Husqvarna Ab | Modular water application device with different protector configurations and corresponding method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2019138472A1 (ja) * | 2018-01-10 | 2019-07-18 | 株式会社寿通商 | 浄水機能付き吐水ヘッド、浄水カートリッジ及び水栓装置 |
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US20090224073A1 (en) * | 2008-03-04 | 2009-09-10 | Pai-Chou Hsieh | Multi-purpose sprayer gun |
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JPH0747135B2 (ja) * | 1991-01-24 | 1995-05-24 | 壽雄 高城 | 放水ノズル |
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JPH06277565A (ja) | 1993-03-25 | 1994-10-04 | Kitagawa Ind Co Ltd | シャワーノズル |
JP2912321B1 (ja) * | 1998-01-05 | 1999-06-28 | 株式会社トヨックス | 散水ノズル |
JP4441023B2 (ja) * | 1999-11-24 | 2010-03-31 | 株式会社三栄水栓製作所 | 散水器 |
CN1274423C (zh) * | 2003-08-19 | 2006-09-13 | 株式会社特友克斯 | 洒水喷嘴 |
JP2005138056A (ja) | 2003-11-07 | 2005-06-02 | Kotobuki Tsusho:Kk | 散水用ノズル |
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2012
- 2012-03-05 JP JP2012048344A patent/JP5619053B2/ja active Active
- 2012-12-17 CN CN201280067699.2A patent/CN104066516B/zh active Active
- 2012-12-17 WO PCT/JP2012/082609 patent/WO2013132720A1/ja active Application Filing
- 2012-12-17 KR KR1020147025144A patent/KR20140138156A/ko not_active Application Discontinuation
- 2012-12-17 DE DE112012005980.8T patent/DE112012005980B4/de active Active
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JPH09173919A (ja) * | 1995-12-25 | 1997-07-08 | Toyox Co Ltd | 散水ノズルの止水通水機構 |
US20070278442A1 (en) * | 2006-05-30 | 2007-12-06 | Hsin-Fa Wang | Water flow control structure of a water gun |
US20090224073A1 (en) * | 2008-03-04 | 2009-09-10 | Pai-Chou Hsieh | Multi-purpose sprayer gun |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015139757A1 (en) * | 2014-03-20 | 2015-09-24 | Husqvarna Ab | Water application device with critical area protectors |
WO2015139759A1 (en) * | 2014-03-20 | 2015-09-24 | Husqvarna Ab | Frost compensator for a water application device |
WO2015139758A1 (en) * | 2014-03-20 | 2015-09-24 | Husqvarna Ab | Modular water application device with different protector configurations and corresponding method |
CN106102929A (zh) * | 2014-03-20 | 2016-11-09 | 富世华股份有限公司 | 具有关键区域保护件的洒水装置 |
CN106103855A (zh) * | 2014-03-20 | 2016-11-09 | 富世华股份有限公司 | 用于洒水装置的结霜补偿件 |
TWI641424B (zh) * | 2014-03-20 | 2018-11-21 | 瑞典商富世華股份有限公司 | 具有關鍵區域保護件的灑水裝置 |
TWI652985B (zh) | 2014-03-20 | 2019-03-11 | 瑞典商富世華股份有限公司 | 用於灑水裝置的結霜補償件 |
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DE112012005980B4 (de) | 2023-05-04 |
JP5619053B2 (ja) | 2014-11-05 |
CN104066516A (zh) | 2014-09-24 |
CN104066516B (zh) | 2016-08-24 |
JP2013180292A (ja) | 2013-09-12 |
DE112012005980T5 (de) | 2015-01-08 |
KR20140138156A (ko) | 2014-12-03 |
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