EP3827902B1 - Kit for a spray gun, method of use and associated gun - Google Patents

Kit for a spray gun, method of use and associated gun Download PDF

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Publication number
EP3827902B1
EP3827902B1 EP20210226.5A EP20210226A EP3827902B1 EP 3827902 B1 EP3827902 B1 EP 3827902B1 EP 20210226 A EP20210226 A EP 20210226A EP 3827902 B1 EP3827902 B1 EP 3827902B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
spray gun
kit
ring
cup
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20210226.5A
Other languages
German (de)
French (fr)
Other versions
EP3827902A1 (en
Inventor
Mazen ZAKI
Saman SHOHOUDI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Exel Industries SA
Original Assignee
Exel Industries SA
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Filing date
Publication date
Application filed by Exel Industries SA filed Critical Exel Industries SA
Publication of EP3827902A1 publication Critical patent/EP3827902A1/en
Application granted granted Critical
Publication of EP3827902B1 publication Critical patent/EP3827902B1/en
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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
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/06—Gas or vapour producing the flow, e.g. from a compressible bulb or air pump
    • B05B11/061—Gas or vapour producing the flow, e.g. from a compressible bulb or air pump characterised by the means producing the gas or vapour pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2408—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus
    • B05B7/241—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus the container being pressurised
    • 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
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2478—Gun with a container which, in normal use, is located above the gun
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
    • B05B7/0838—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter comprising a single means controlling simultaneously the flow rates of shaping and spraying gas jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • B05B7/1209—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages the controlling means for each liquid or other fluent material being manual and interdependent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • B05B7/129—Hand guns comprising a gas valve located at the bottom of the handle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2408—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus
    • 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
    • B05B1/3033—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 control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—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 control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—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 control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter

Definitions

  • the present invention relates to a kit capable of pressurizing a fluid from a reservoir of a cup of a spray gun.
  • the present invention further relates to a method of using the spray gun kit and a gun comprising such a kit.
  • the supply of the product in a cup gun is usually done by suction or by gravity, in particular by the venturi effect /
  • the cup can be pressurized
  • a compressed air compressor is used to pressurize the fluid.
  • the characteristics of the compressed air compressor are chosen according to the flow rate and the pressure planned for the spray gun, to allow an optimal adaptation of the gun according to the fluid to be applied.
  • An additional pipe is thus provided between the body of the gun and the cup to put the cup under pressure.
  • a hole is provided in the body of the gun to allow connection of the additional hose.
  • WO 2016/180863 A1 discloses a safety and regulating device for a pressure vessel for application devices for liquid media.
  • An object of the invention is therefore to provide a kit for a spray gun capable of pressurizing a fluid from a reservoir of a bucket of a spray gun, which is simple and practical to use.
  • Such a kit also makes it possible to adapt a spray gun for use under pressure without requiring drilling on the body of the gun.
  • the connector then makes it possible to recover the pressure, at least partially, of a fluid at a location of the spray gun in order to pressurize the fluid included in the reservoir of a cup.
  • the invention also relates to a spray gun comprising a main body, a cup and a spray gun kit as described above, in which the jacket is connected to an open chamber of the main body, so that the open chamber and the internal volume of the liner together define a single volume, the cup defining a reservoir, the connection end being connected to the cup, the internal volume of the liner being fluidically connected to the tank of the cup by the connection.
  • a spray gun 10 according to a first embodiment is shown in the figure 1 and 2 .
  • the spray gun 10 is intended for spraying a fluid product.
  • the fluid product preferably has a viscosity of between 0.1 mPa.s and 100,000 mPa.s, more particularly between 1 and 1000 mPa.s.
  • Gun 10 includes main body 12, cup 14 and spray gun kit 16.
  • the main body 12 has a first part 18, hereinafter referred to as “barrel”, similar to the barrel of a pistol, and a second part 20, hereinafter referred to as “stock”, similar to the butt of a pistol.
  • the body 12 also comprises a third part 22, hereinafter referred to as the “breech”, similar to the breech of a pistol.
  • Barrel 18 has a front end 24 which defines the front end of body 12.
  • Stock 20 extends from a rear end 26 of barrel 18.
  • the butt 20 here extends perpendicular to the barrel 18.
  • Stock 20 has a distal end 28 opposite barrel 18.
  • distal end 28 constitutes the end of stock 20 farthest from barrel 18.
  • the butt 20 forms a handle for gripping the pistol 10 by an operator.
  • the breech 22 extends from the rear end 26 of the barrel 18 in the extension of the barrel 18.
  • the breech 22 defines a cavity 30 with the stock 20 and the barrel 18.
  • the body 12 defines an inlet 32 for pressurized fluid, a supply orifice 33 for supplying the gun 10 with a fluid product and an ejection orifice 34 for ejecting the fluid product from the gun 10 .
  • Body 12 includes an internal duct 36 fluidly connecting pressurized fluid inlet 32 to cavity 30.
  • the body 12 includes a supply conduit 37 fluidly connecting the supply port 33 to the ejection port 34.
  • the pressurized fluid inlet 32 is suitable for connecting a member (not shown) for supplying the gun 10 with a pressurized fluid, this supply member typically consisting of a flexible tube.
  • the fluid under pressure is, for example, air.
  • the pressurized fluid has a pressure greater than 200,000 hPa.
  • the pressurized fluid has a pressure of less than 1,000,000 hPa.
  • the pressurized fluid inlet 32 is here formed at the distal end 28 of the butt 20.
  • the supply orifice 33 is suitable for connecting a member for supplying the gun 10 with a fluid product.
  • This gun supply member is here the bucket 14 comprising a reservoir 15 containing or capable of containing the fluid product.
  • the cup 14 is connected to the second supply orifice by a connecting member.
  • the connecting member here comprises a first end fitted into the supply orifice 33 and a second end fitted into the reservoir 15.
  • the fluid product is, for example, paint.
  • the feed orifice 33 is here delimited on the barrel 18 of the gun.
  • Bucket 14 extends above barrel 18, i.e. on an opposite side of barrel 18 with respect to stock 20.
  • the bucket 14 extends below the barrel 18, that is to say on the same side of the barrel 18 as the stock 20.
  • the ejection port 34 is formed in the front end 24 of the barrel 18.
  • the ejection orifice 34 is suitable for mounting a nozzle 38 for shaping the fluid product at the outlet of the spray gun 10.
  • the internal duct 36 is housed in the butt 20.
  • the spray gun 10 comprises a device for regulating the flow of pressurized fluid in the internal duct 36.
  • the spray gun 10 includes a needle 44 arranged in the internal conduit 36.
  • the internal duct 36 comprises, for example, a distal portion here rectilinear and a proximal portion here rectilinear, the pressurized fluid inlet orifice 32 being arranged at the level of the distal portion.
  • the needle 44 extends in the continuity of the proximal portion.
  • the needle 44 comprises an obturator at the interface between the distal portion and the proximal portion and is able to regulate the flow of pressurized fluid passing from the distal portion to the proximal portion. More particularly, the shutter is movable in translation to adjust the passage surface between the distal portion and the proximal portion.
  • the body 12 also has an actuation duct 42 from the cavity 30 to the ejection orifice 34.
  • the actuation duct 42 extends along a main axis of extension, corresponding here to the axis of extension of the barrel 18 and of the breech 22.
  • the actuation conduit 42 defines a chamber 46 upstream of the ejection orifice 34.
  • Chamber 46 is provided with a seat 47 at the junction between chamber 46 and supply conduit 37.
  • the seat 47 in particular has a shape that widens towards the chamber 46.
  • the actuation duct 42 has a constriction 49 between the cavity 30 and the chamber 46, that is to say a portion in which the diameter of the actuation duct 42 is strictly less than that of the chamber 46 and than that of the cavity 30, the diameter being taken radially relative to the direction of extension of the duct 42.
  • the spray gun 10 comprises an actuation system 48, said actuation system 48 here being arranged in the actuation conduit 42.
  • the actuation system 48 comprises a shutter member 50 movable relative to the body 12 between a release position of the supply conduit 37, in which it allows the circulation of the fluid product between the supply orifice 33 and the ejection orifice 34, and a closed position of the supply duct 37, in which it opposes the circulation of the fluid product between the supply orifice 33 and the ejection orifice 34.
  • the closure member 50 is in particular movable in translation relative to the body 12 between its release and closure positions in the direction of extension of the actuating conduit 42.
  • the shutter member 50 comprises a rod 52 extending in the actuation duct 42 and a head 54 extending in the chamber 46.
  • the supply duct 37 emerges at the inlet of the chamber 46 opposite the ejection orifice 34, upstream of the head 54 of the closure member 50.
  • the rod 52 has a diameter substantially equal to the diameter of the constriction 49 of the actuation duct 42.
  • the shutter member 50 forms a needle which, when the shutter member 50 is in its shutter position, bears against the seat 47 and, when the shutter member 50 is in its release, is away from the seat 47. This offers great flexibility in adjusting the output flow rate of the fluid product coming from the supply orifice 33 according to the movement of the closure member 50 between its shutter and release positions.
  • Actuation system 48 further comprises a member 54 for returning shutter member 50 to its closed position.
  • This return member 54 is here formed by a compression spring oriented in the direction of extension of the cylinder head 22 and compressed between, on the one hand, a bottom of the cylinder head 22 and, on the other hand, an abutment integral with the shutter member 50.
  • the spray gun 10 includes a trigger 58 provided to activate the actuation system 48 in the release position.
  • the trigger 58 comprises a main branch 59 and two flanges 60.
  • the main branch 59 defines a gripping surface intended to receive at least one finger of an operator holding the stock 20 in his palm.
  • the flanges 60 are spaced apart and each extend upward from a respective side edge of the main leg 59.
  • the flanges 60 sandwich the body 12, and more particularly the barrel 18.
  • the trigger 58 is pivotally mounted about a pivot axis A-A', transverse, relative to the body 12, this pivot axis A-A' being, in the example shown, above the barrel 18.
  • the flanges 60 of the trigger 58 are traversed by a common shaft 61 engaged through the body 12.
  • the common shaft 61 extends along the pivot axis A-A'.
  • the common shaft 61 forms a pivot connection between the sear 58 and the body 12 so that the sear 58 is rotatable about the pivot axis A-A' relative to the body 12 between an actuated position, in which the sear 58 is moved towards the butt 20 and the obturation member 50 is in its release position, and a priming position, in which the sear 58 is away from the butt 20 and the obturation member 50 is in its closed position.
  • the body 12 also has a pressurized fluid passage conduit.
  • the pressurized fluid passage conduit comprises a chamber 62.
  • the chamber 62 has an outlet 63 for pressurized fluid.
  • the exit 63 is here delimited at the front of the chamber 62.
  • the outlet 63 is fluidically connected to at least one, here two, outlets 92 arranged at the level of the ejection of the fluid product from the spray gun, for example by an intermediate conduit 90 and/or an intermediate chamber 91.
  • the intermediate duct here surrounds the supply duct 37 and the intermediate chamber surrounds the chamber 46 of the actuation duct 42.
  • the chamber 62 has a secondary outlet through at least one conduit, here a plurality of conduits 93, arranged in a central portion of the chamber 62.
  • the secondary outlet is fluidically connected to at least one orifice 96 arranged at the front end 24 of the barrel, for example via one or more chambers 94, 95 surrounding the chamber 46 of the actuation duct 42.
  • the chamber 62 is also fluidically connected to the cavity 30, and thus to the pressurized fluid inlet 32.
  • the chamber 62 has an opening opposite its outlet 63 along a direction of extension D of the chamber.
  • Kit 16 includes liner 64, fitting 66 and ring 68.
  • the sleeve 64 has, for example, the general shape of a hollow cylinder.
  • Sleeve 64 extends along a main extension axis between a distal end and a proximal end.
  • the jacket 64 delimits an internal volume 70, the internal volume being designed to contain a fluid.
  • the sleeve 64 has an outer circumferential surface 72, forming a radial periphery of the sleeve 64, and an inner circumferential surface 74 delimiting the internal volume 70.
  • Sleeve 64 includes a fluid outlet on its outer circumferential surface 72 as described below.
  • the outer circumferential surface 72 has a recess 73 on a circumference of the sleeve 64, here a cylindrical recess.
  • Recess 73 is spaced from each of the distal and proximal ends of sleeve 64.
  • the inner circumferential surface 74 has a recess 75, here cylindrical.
  • the recess 75 extends over a portion of the inner circumferential surface 74 from the proximal end of the sleeve 64.
  • the sleeve 64 delimits at least one orifice 76.
  • the or each orifice 76 passes through the wall of the sleeve 64.
  • the or each orifice 76 opens onto the radial periphery 72 and fluidically connects the internal volume 70 and the radial periphery 72.
  • the or each orifice 76 passes through the sleeve 64 from the outer circumferential surface 72 to the inner circumferential surface 74.
  • the or each orifice 76 fluidically connects the recess 73 of the outer circumferential surface 72 and the recess 75 of the inner circumferential surface 74.
  • the recess 73 here defines the fluid outlet of the sleeve 64, here from the internal volume 70.
  • the fluid outlet from the sleeve 64 is, for example, defined by the or each orifice 76 opening into the outer circumferential surface 72.
  • the sleeve 64 delimits one or more orifices 76 distributed over the circumference of the sleeve 64.
  • Each orifice 76 passes through sleeve 64 along a respective axis.
  • the respective axis of each orifice 76 forms with the main extension axis of the jacket 64 an angle of between 30° and 90°, more particularly between 45° and 75°.
  • the orifices 76 are here, more particularly, distributed so that their respective axes are located on the same cone having as generatrix the main extension axis of the sleeve 64.
  • Jacket 64 is configured to be connected to main body 12.
  • the sleeve 64 is here connected to an open chamber of the main body, here the chamber 62 of the pressurized fluid passage conduit, so that the open chamber and the internal volume of the sleeve together define a single common volume.
  • the main axis of extension of the sleeve 64 extends along the direction of extension D of the chamber 62.
  • the proximal end of the sleeve 64 is inserted into the opening of the chamber 62 of the pressurized fluid passage conduit.
  • the opening has, for example, a thread and a portion of the outer circumferential surface 72 of the sleeve 64 has a complementary thread from the proximal end of the sleeve 64.
  • the spray gun 10 further comprises a needle 78 arranged in the internal volume of the jacket 64 and in the open chamber 62, the needle 78 being able to regulate the passage of fluid between the chamber 62 of the pressurized fluid passage conduit and the intermediate duct 90.
  • the needle 78 comprises a movable shutter in translation in the chamber 62 arranged to adjust the passage surface of the outlet 63 of the chamber 62.
  • the needle 78 cooperates with the inner circumferential surface 74 of the sleeve 64.
  • the sleeve 64 has, for example, a thread on a part of the inner circumferential surface 74 from the distal end, the needle having a complementary thread.
  • the needle 78 here occupies the entire internal volume 70 of the sleeve 64 with the exception of the volume defined by the recess 75.
  • the pressurized fluid passage conduit thus makes it possible to selectively insert pressurized fluid from the pressurized fluid inlet 32 to the outlet or outlets 92 arranged at the level of the ejection of the fluid product from the spray gun.
  • Connector 66 has a tapping end 80 and a connecting end 82.
  • the connector 66 here comprises a pipe extending between the sampling end 80 and the connection end 82.
  • the sampling end 80 is directly connected to the fluid outlet of the sleeve 64 on its radial periphery.
  • connection end 82 is here connected to the cup 14 so as to fluidically connect the cup 14, more particularly the reservoir 15, to the air outlet of the jacket 64.
  • the connector 66 is advantageously provided with a regulator 84 capable of controlling the fluid pressure passing through the sampling end 80.
  • the regulator 84 makes it possible, for example, to adjust the passage of fluid such that the pressure of the fluid is between 0 and 6 bar.
  • the regulator 84 is able to control the fluid flow passing through the sampling end 80.
  • the regulator 84 is screwed directly at the outlet of the ring 68.
  • Ring 68 surrounds sleeve 64.
  • the ring 68 covers the entire fluid outlet of the sleeve 64 on the radial periphery, more particularly here of the recess 73, with the exception of the connection of the sampling end 80 of the connector 66.
  • the ring 68 comprises a cylindrical portion surrounding the jacket 64 at least around the fluid outlet of the jacket 64.
  • the cylindrical portion comprises a radial orifice for the passage of the sampling end 80 of the connector 66.
  • the ring 68 and/or the sleeve 64 is provided with O-rings 86 located on either side of the recess 73.
  • Such a kit allows the selective removal of pressurized fluid to pressurize the fluid product contained in the cup 14.
  • the fluid product 14 is, for example, placed under a pressure of between 0 and 6 bar.
  • the ring 68 is also here free to rotate around the main axis of extension of the sleeve 64 at least over a given angular interval.
  • the given angular interval is, for example, substantially equal to 180°.
  • the given angular interval is equal to 360°.
  • the ring 68 is here free to rotate between a right position and a left position.
  • the sampling end 80 of the connector 66 is connected to the jacket 64 to the right of the main body 12, more particularly of the pressurized fluid passage duct, with respect to a user of the gun.
  • valve of the regulator 84 of the connection 66 is then easily accessible from the right, in particular by the right hand of the user.
  • the sampling end 80 of the connector 66 is connected to the jacket 64 to the left of the main body 12, more particularly of the pressurized fluid passage duct, with respect to a user of the gun.
  • valve of the regulator 84 of the connection 66 is then easily accessible from the right, in particular by the left hand of the gun.
  • the ring has at least one indexing element, here two indexing elements.
  • the main body has at least one complementary indexing element, here a single complementary indexing element, provided to cooperate with the at least one indexing element to block the ring 68 in at least one given position relative to the body main 12.
  • the or each given position corresponds to a given angular position of the ring around the main axis.
  • the at least one given position comprises the right position and the left position.
  • the indexing elements of the ring are, for example, flats, the complementary indexing element of the main body 12 being a flat arranged to cooperate with a first of the flats of the ring in the straight position and with a second of the flats of the ring in the left position.
  • the indexing elements of the ring are retractable fingers, the complementary indexing element of the main body 12 being a hole provided to cooperate with a first of the fingers in the right position and with a second of the fingers in the left position.
  • the indexing elements of the ring are holes, the complementary indexing element of the main body 12 being a finger retractable designed to be inserted into a first of the holes in the right position and into a second of the holes in the left position.
  • the recess is dug in the ring 68, more particularly in an inner circumferential surface of the ring 68 extending opposite the outer circumferential surface 72 of the sleeve 64.
  • the orifice 76 then fluidically connects the outer circumferential surface 72 of the sleeve 64 facing the recess dug in the ring 68 and the recess 75 of the inner circumferential surface 74 of the sleeve 64.
  • the recess is dug both in the sleeve 64 and in the ring 68, more particularly in the outer circumferential surface 72 of the sleeve 64 and an inner circumferential surface of the ring 68 s' extending opposite the outer circumferential surface 72 of the liner 64.
  • the regulator is mounted in line between the kit 16 without regulator, for example as represented on the figure 4 , and the cup 14. More particularly, the regulator comprises an inlet fluidically connected, for example by a pipe, to the kit, more particularly to the fluid outlet of the jacket, and an outlet fluidly connected, for example by a pipe, to the bucket.
  • FIG. 5 An alternative example of a kit is shown in the figure 5 . Similar items are referenced similarly with a reference incremented by 100. Only the points in which the alternative example differs from the kit previously described are described below.
  • Regulator 184 is incorporated directly into ring 168 of kit 116.
  • regulator 184 is integral with the cylindrical portion surrounding sleeve 164.
  • the radial orifice of the cylindrical portion of ring 168 is fluidly connected to regulator 184.
  • Regulator 184 has an outlet 165 for connecting a hose.
  • the regulator 184 is capable of adjusting the flow rate and/or the pressure of the fluid passing through it, that is to say between the radial orifice of the cylindrical portion of the ring 168 and the outlet 165.
  • connection between the radial port of the cylindrical portion and the cup comprises, in said example, the regulator 184 and the pipe extending from the outlet 165.
  • the proximal end of the sleeve 64, 164 is here inserted into the open chamber 62. More particularly, the sleeve 64, 164 is screwed into the opening of the chamber 62.
  • the needle 78, 178 is further inserted into the internal volume 70 of the sleeve 64, 164. More particularly, the needle 78, 178 is screwed onto the thread of the inner circumferential surface 74.
  • the spray gun is provided so that the pressurized kit is connected to another location of the gun.
  • the chamber of the pressurized fluid passage conduit is, for example, closed directly by the needle fitted into the chamber, for example using a sleeve.
  • the kit is, for example, designed to be fixed around the needle 44 of the pressurized fluid inlet 32.
  • the kit can be designed to attach to the inlet port fitting 32.
  • the kit is designed to be fixed around the cavity 30 of the actuation duct 42.
  • Such a kit therefore makes it possible to easily adapt the spray gun to provide for a withdrawal of pressurized fluid in the direction of the tank of the cup if necessary.
  • the kit is able to be removed, the chamber of the pressurized fluid passage duct being adapted to be closed directly by the needle 78, for example, by fitting the needle into the chamber, in particular using a sleeve.
  • the regulator 84 is adjusted so that the passage surface of a circumference in the connector 66 is zero.
  • the kit is easily placed on the gun at the desired location.
  • the connector then makes it possible to recover the pressure, advantageously selectively, of the pressurized fluid at a location of the spray gun in order to pressurize the fluid comprised in the reservoir of a cup.
  • the pressurized gun with the kit is also easily handled by a user.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Nozzles (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Description

La présente invention concerne un kit apte à mettre sous pression un fluide d'un réservoir d'un godet d'un pistolet pulvérisateur.The present invention relates to a kit capable of pressurizing a fluid from a reservoir of a cup of a spray gun.

La présente invention concerne en outre un procédé d'utilisation du kit pour pistolet pulvérisateur et un pistolet comprenant un tel kit.The present invention further relates to a method of using the spray gun kit and a gun comprising such a kit.

L'apport du produit dans un pistolet à godet se fait usuellement par aspiration ou par gravité, notamment par effet venturi/ Dans le cas de produit relativement visqueux, le godet peut être mis sous pressionThe supply of the product in a cup gun is usually done by suction or by gravity, in particular by the venturi effect / In the case of a relatively viscous product, the cup can be pressurized

Usuellement, on utilise un compresseur à air comprimé pour mettre sous pression le fluide. Les caractéristiques du compresseur à air comprimé sont choisies en fonction du débit et de la pression prévus pour le pistolet pulvérisateur, pour permettre une adaptation optimale du pistolet en fonction du fluide à appliquer.Usually, a compressed air compressor is used to pressurize the fluid. The characteristics of the compressed air compressor are chosen according to the flow rate and the pressure planned for the spray gun, to allow an optimal adaptation of the gun according to the fluid to be applied.

Un tuyau supplémentaire est ainsi prévu entre le corps du pistolet et le godet pour mettre le godet sous pression. Un perçage est prévu dans le corps du pistolet pour permettre le raccord du tuyau supplémentaire.An additional pipe is thus provided between the body of the gun and the cup to put the cup under pressure. A hole is provided in the body of the gun to allow connection of the additional hose.

Cependant, cela nécessite un pistolet dédié présentant ledit perçage. En particulier, un tel pistolet n'est pas adaptable pour utilisation avec gravité.However, this requires a dedicated gun with said piercing. In particular, such a gun is not suitable for use with gravity.

WO 2016/180863 A1 divulgue un dispositif de sécurité et de régulation pour un récipient sous pression pour des dispositifs d'application pour des milieux liquides. WO 2016/180863 A1 discloses a safety and regulating device for a pressure vessel for application devices for liquid media.

Un but de l'invention est donc de proposer un kit pour pistolet pulvérisateur apte à mettre sous pression un fluide d'un réservoir d'un godet d'un pistolet pulvérisateur, simple et pratique d'utilisation.An object of the invention is therefore to provide a kit for a spray gun capable of pressurizing a fluid from a reservoir of a bucket of a spray gun, which is simple and practical to use.

Un tel kit permet en outre d'adapter un pistolet pulvérisateur pour une utilisation sous pression sans nécessiter de perçage sur le corps du pistolet.Such a kit also makes it possible to adapt a spray gun for use under pressure without requiring drilling on the body of the gun.

A cet effet, l'invention a pour objet un kit pour pistolet pulvérisateur comprenant :

  • une chemise délimitant un volume interne, le volume interne étant prévu pour contenir un fluide sous pression, la chemise étant configurée pour être raccordée à un corps principal d'un pistolet pulvérisateur,
    • la chemise présentant une périphérie radiale,
    • la chemise étant pourvue d'au moins un orifice, le ou chaque orifice débouchant sur la périphérie radiale et reliant fluidiquement le volume interne et la périphérie radiale, la périphérie radiale délimitant une sortie de fluide de la chemise,
  • un raccord présentant une extrémité de prélèvement et une extrémité de raccordement, l'extrémité de prélèvement étant reliée à la sortie de fluide de la chemise, l'extrémité de raccordement étant adaptée pour être reliée à un godet de manière à relier fluidiquement le godet au volume interne de la chemise,
  • une bague entourant la chemise, la bague recouvrant la sortie de fluide sur la périphérie radiale en dehors de l'extrémité de prélèvement du raccord.
To this end, the subject of the invention is a kit for a spray gun comprising:
  • a jacket delimiting an internal volume, the internal volume being provided to contain a pressurized fluid, the jacket being configured to be connected to a main body of a spray gun,
    • the sleeve having a radial periphery,
    • the jacket being provided with at least one orifice, the or each orifice opening onto the radial periphery and fluidly connecting the internal volume and the radial periphery, the radial periphery delimiting a fluid outlet from the jacket,
  • a fitting having a tapping end and a connection end, the tapping end being connected to the fluid outlet of the sleeve, the connection end being adapted to be connected to a cup so as to fluidically connect the cup to the internal volume of the shirt,
  • a ring surrounding the sleeve, the ring covering the fluid outlet on the radial periphery outside the tapping end of the connector.

Le raccord permet alors de récupérer la pression, au moins partielle, d'un fluide en un emplacement du pistolet pulvérisateur pour mettre sous pression le fluide compris dans le réservoir d'un godet.The connector then makes it possible to recover the pressure, at least partially, of a fluid at a location of the spray gun in order to pressurize the fluid included in the reservoir of a cup.

Le kit pour pistolet pulvérisateur peut en outre présenter une ou plusieurs caractéristiques ci-dessous, considérée(s) individuellement ou selon toutes les combinaisons techniquement possibles :

  • le ou chaque orifice traverse la chemise selon un axe respectif, l'axe respectif du ou de chaque orifice formant avec l'axe d'extension principale de la chemise un angle compris entre 30° et 90°, plus particulièrement entre 45° et 75° ;
  • le kit comprend un régulateur apte à contrôler la pression ou le débit de fluide traversant l'extrémité de prélèvement ;
  • la chemise et/ou la bague présentent un évidement au niveau de la périphérie radiale, le ou chaque orifice débouchant dans l'évidement ;
  • l'évidement est au moins partiellement creusé dans la chemise, l'évidement formant la sortie de fluide de la chemise ; et/ou
  • la bague et/ou la chemise sont pourvues de joints toriques situés de part et d'autre de l'évidement
The spray gun kit may additionally have one or more of the characteristics below, considered individually or in all technically possible combinations:
  • the or each orifice passes through the liner along a respective axis, the respective axis of the or each orifice forming with the main extension axis of the liner an angle of between 30° and 90°, more particularly between 45° and 75 °;
  • the kit comprises a regulator capable of controlling the pressure or the flow rate of fluid passing through the sampling end;
  • the sleeve and/or the ring have a recess at the radial periphery, the or each orifice opening out into the recess;
  • the recess is at least partially hollowed out in the shirt, the recess forming the fluid outlet of the shirt; and or
  • the ring and/or the sleeve are provided with O-rings located on either side of the recess

L'invention concerne en outre un procédé d'utilisation d'un kit pour pistolet pulvérisateur tel que décrit précédemment, comprenant les étapes suivantes :

  • fourniture d'un kit pour pistolet pulvérisateur tel que décrit précédemment,
  • fourniture d'un pistolet pulvérisateur comprenant un corps principal définissant une chambre ouverte et un godet définissant un réservoir,
  • fixation de la chemise sur le corps principal de manière à ce que la chambre ouverte et le volume interne de la chemise définissent ensemble un unique volume, et
  • raccordement de l'extrémité de raccordement au godet, de manière à relier fluidiquement le volume interne de la chemise au réservoir du godet.
The invention further relates to a method of using a kit for a spray gun as described above, comprising the following steps:
  • supply of a spray gun kit as described above,
  • providing a spray gun comprising a main body defining an open chamber and a cup defining a reservoir,
  • attaching the liner to the main body so that the open chamber and the inner volume of the liner together define a single volume, and
  • connection of the connection end to the cup, so as to fluidically connect the internal volume of the jacket to the tank of the cup.

L'invention concerne également un pistolet pulvérisateur comprenant un corps principal, un godet et un kit pour pistolet pulvérisateur tel que décrit précédemment, dans lequel la chemise est reliée à une chambre ouverte du corps principal, de sorte que la chambre ouverte et le volume interne de la chemise définissent ensemble un unique volume, le godet définissant un réservoir, l'extrémité de raccordement étant reliée au godet, le volume interne de la chemise étant relié fluidiquement au réservoir du godet par le raccord.The invention also relates to a spray gun comprising a main body, a cup and a spray gun kit as described above, in which the jacket is connected to an open chamber of the main body, so that the open chamber and the internal volume of the liner together define a single volume, the cup defining a reservoir, the connection end being connected to the cup, the internal volume of the liner being fluidically connected to the tank of the cup by the connection.

Le pistolet pulvérisateur peut en outre présenter une ou plusieurs caractéristiques ci-dessous, considérée(s) individuellement ou selon toutes les combinaisons techniquement possibles :

  • le pistolet comprend un pointeau s'étendant partiellement dans la chambre ouverte, la chemise entourant le pointeau, le volume interne de la chemise étant défini entre le pointeau et la chemise ;
  • la chambre ouverte est reliée fluidiquement à un orifice d'entrée en fluide sous pression ;
  • la bague présente au moins un élément d'indexation, le corps principal présentant au moins un élément d'indexation complémentaire prévu pour coopérer avec l'au moins un élément d'indexation pour bloquer la bague dans au moins une position donnée par rapport au corps principal ; et/ou
  • la bague est libre en rotation autour d'un axe principal autour de la chemise, la position donnée de la bague correspondant à une position angulaire de la bague autour de l'axe principal.
The spray gun may also have one or more characteristics below, considered individually or in all technically possible combinations:
  • the gun comprises a needle extending partially into the open chamber, the sleeve surrounding the needle, the internal volume of the sleeve being defined between the needle and the sleeve;
  • the open chamber is fluidically connected to a pressurized fluid inlet port;
  • the ring has at least one indexing element, the main body having at least one complementary indexing element provided to cooperate with the at least one indexing element to lock the ring in at least one given position relative to the body major ; and or
  • the ring is free to rotate around a main axis around the sleeve, the given position of the ring corresponding to an angular position of the ring around the main axis.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui suit de modes de réalisation de l'invention, donnée à titre d'exemple uniquement et en référence aux dessins dans lesquels :

  • [Fig 1] la figure 1 et
  • [Fig 2] la figure 2 sont respectivement une vue en perspective et une vue en coupe d'un pistolet pulvérisateur comprenant un kit apte à mettre sous pression un fluide du réservoir du godet selon un premier mode de réalisation de l'invention,
  • [Fig 3] la figure 3 est une vue en perspective du kit entourant un pointeau du pistolet pulvérisateur de la figure 1, et
  • [Fig 4] la figure 4 est une vue en coupe d'une bague et d'une chemise d'un kit de l'invention selon un deuxième mode de réalisation, sans régulateur, entourant un pointeau , et.
  • [Fig 5] la figure 5 est une vue en perspective d'un kit entourant un pointeau du pistolet pulvérisateur selon un troisième mode de réalisation.
Other characteristics and advantages of the invention will appear on reading the following description of embodiments of the invention, given by way of example only and with reference to the drawings in which:
  • [ Fig 1 ] the figure 1 and
  • [ Fig 2 ] the picture 2 are respectively a perspective view and a sectional view of a spray gun comprising a kit capable of pressurizing a fluid from the reservoir of the cup according to a first embodiment of the invention,
  • [ Fig.3 ] the picture 3 is a perspective view of the kit surrounding a spray gun needle from the figure 1 , and
  • [ Fig 4 ] the figure 4 is a sectional view of a ring and a sleeve of a kit of the invention according to a second embodiment, without a regulator, surrounding a needle, and.
  • [ Fig.5 ] the figure 5 is a perspective view of a kit surrounding a needle of the spray gun according to a third embodiment.

Un pistolet pulvérisateur 10 selon un premier mode de réalisation est représenté sur les figures 1 et 2.A spray gun 10 according to a first embodiment is shown in the figure 1 and 2 .

Le pistolet pulvérisateur 10 est destiné à la pulvérisation d'un produit fluide.The spray gun 10 is intended for spraying a fluid product.

Le produit fluide présente de préférence une viscosité comprise entre 0,1 mPa.s et 100 000 mPa.s plus particulièrement entre 1 et 1000 mPa.s.The fluid product preferably has a viscosity of between 0.1 mPa.s and 100,000 mPa.s, more particularly between 1 and 1000 mPa.s.

Le pistolet 10 comprend un corps principal 12, un godet 14 et un kit pour pistolet pulvérisateur 16.Gun 10 includes main body 12, cup 14 and spray gun kit 16.

Le corps principal 12 présente une première partie 18, dénommée ci-après « canon », assimilable au canon d'un pistolet, et une deuxième partie 20, dénommée ci-après « crosse », assimilable à la crosse d'un pistolet. Dans l'exemple représenté, le corps 12 comprend également une troisième partie 22, dénommée ci-après « culasse », assimilable à la culasse d'un pistolet.The main body 12 has a first part 18, hereinafter referred to as “barrel”, similar to the barrel of a pistol, and a second part 20, hereinafter referred to as “stock”, similar to the butt of a pistol. In the example shown, the body 12 also comprises a third part 22, hereinafter referred to as the “breech”, similar to the breech of a pistol.

Le canon 18 présente une extrémité avant 24 qui définit l'extrémité avant du corps 12.Barrel 18 has a front end 24 which defines the front end of body 12.

La crosse 20 s'étend depuis une extrémité arrière 26 du canon 18.Stock 20 extends from a rear end 26 of barrel 18.

La crosse 20 s'étend ici perpendiculairement au canon 18.The butt 20 here extends perpendicular to the barrel 18.

La crosse 20 présente une extrémité distale 28 opposée au canon 18. En d'autres termes, l'extrémité distale 28 constitue l'extrémité de la crosse 20 la plus éloignée du canon 18.Stock 20 has a distal end 28 opposite barrel 18. In other words, distal end 28 constitutes the end of stock 20 farthest from barrel 18.

La crosse 20 forme une poignée de préhension du pistolet 10 par un opérateur.The butt 20 forms a handle for gripping the pistol 10 by an operator.

La culasse 22 s'étend depuis l'extrémité arrière 26 du canon 18 dans le prolongement du canon 18.The breech 22 extends from the rear end 26 of the barrel 18 in the extension of the barrel 18.

La culasse 22 définit une cavité 30 avec la crosse 20 et le canon 18.The breech 22 defines a cavity 30 with the stock 20 and the barrel 18.

Le corps 12 définit un orifice d'entrée 32 en fluide sous pression, un orifice d'alimentation 33 pour l'alimentation du pistolet 10 en un produit fluide et un orifice d'éjection 34 pour l'éjection du produit fluide hors du pistolet 10.The body 12 defines an inlet 32 for pressurized fluid, a supply orifice 33 for supplying the gun 10 with a fluid product and an ejection orifice 34 for ejecting the fluid product from the gun 10 .

Le corps 12 comprend un conduit interne 36 connectant fluidiquement l'orifice d'entrée 32 en fluide sous pression à la cavité 30.Body 12 includes an internal duct 36 fluidly connecting pressurized fluid inlet 32 to cavity 30.

Le corps 12 comprend un conduit d'alimentation 37 connectant fluidiquement l'orifice d'alimentation 33 à l'orifice d'éjection 34.The body 12 includes a supply conduit 37 fluidly connecting the supply port 33 to the ejection port 34.

L'orifice d'entrée 32 en fluide sous pression est adapté pour le raccordement d'un organe (non représenté) d'alimentation du pistolet 10 en un fluide sous pression, cet organe d'alimentation étant typiquement constitué par un tube flexible.The pressurized fluid inlet 32 is suitable for connecting a member (not shown) for supplying the gun 10 with a pressurized fluid, this supply member typically consisting of a flexible tube.

Le fluide sous pression est, par exemple, de l'air.The fluid under pressure is, for example, air.

Le fluide sous pression présente une pression supérieure à 200 000 hPa.The pressurized fluid has a pressure greater than 200,000 hPa.

Le fluide sous pression présente une pression inférieure à 1 000 000 hPa.The pressurized fluid has a pressure of less than 1,000,000 hPa.

L'orifice d'entrée 32 en fluide sous pression est ici formé à l'extrémité distale 28 de la crosse 20.The pressurized fluid inlet 32 is here formed at the distal end 28 of the butt 20.

L'orifice d'alimentation 33 est adapté pour le raccordement d'un organe d'alimentation du pistolet 10 en un produit fluide.The supply orifice 33 is suitable for connecting a member for supplying the gun 10 with a fluid product.

Cet organe d'alimentation du pistolet est ici le godet 14 comprenant un réservoir 15 contenant ou apte à contenir le produit fluide.This gun supply member is here the bucket 14 comprising a reservoir 15 containing or capable of containing the fluid product.

Le godet 14 est raccordé au deuxième orifice d'alimentation par un organe de raccordement.The cup 14 is connected to the second supply orifice by a connecting member.

L'organe de raccordement comprend ici une première extrémité emmanché dans l'orifice d'alimentation 33 et une deuxième extrémité emmanché dans le réservoir 15.The connecting member here comprises a first end fitted into the supply orifice 33 and a second end fitted into the reservoir 15.

Le produit fluide est, par exemple, de la peinture.The fluid product is, for example, paint.

L'orifice d'alimentation 33 est ici délimité sur le canon 18 du pistolet.The feed orifice 33 is here delimited on the barrel 18 of the gun.

Le godet 14 s'étend au-dessus du canon 18, c'est-à-dire à un côté opposé du canon 18 par rapport à la crosse 20.Bucket 14 extends above barrel 18, i.e. on an opposite side of barrel 18 with respect to stock 20.

Dans un mode de réalisation alternatif non représenté, le godet 14 s'étend en-dessous du canon 18, c'est-à-dire du même côté du canon 18 que la crosse 20.In an alternative embodiment not shown, the bucket 14 extends below the barrel 18, that is to say on the same side of the barrel 18 as the stock 20.

L'orifice d'éjection 34 est ménagé dans l'extrémité avant 24 du canon 18.The ejection port 34 is formed in the front end 24 of the barrel 18.

Ici, l'orifice d'éjection 34 est adapté pour le montage d'une buse 38 de mise en forme du produit fluide à la sortie du pistolet pulvérisateur 10.Here, the ejection orifice 34 is suitable for mounting a nozzle 38 for shaping the fluid product at the outlet of the spray gun 10.

Le conduit interne 36 est logé dans la crosse 20.The internal duct 36 is housed in the butt 20.

Dans l'exemple représenté, le pistolet pulvérisateur 10 comprend un dispositif de régulation du débit du fluide sous pression dans le conduit interne 36.In the example shown, the spray gun 10 comprises a device for regulating the flow of pressurized fluid in the internal duct 36.

Plus particulièrement, le pistolet pulvérisateur 10 comprend un pointeau 44 agencé dans le conduit interne 36.More particularly, the spray gun 10 includes a needle 44 arranged in the internal conduit 36.

Le conduit interne 36 comprend, par exemple, une portion distale ici rectiligne et une portion proximale ici rectiligne, l'orifice d'entrée 32 en fluide sous pression étant agencé au niveau de la portion distale.The internal duct 36 comprises, for example, a distal portion here rectilinear and a proximal portion here rectilinear, the pressurized fluid inlet orifice 32 being arranged at the level of the distal portion.

Le pointeau 44 s'étend dans la continuité de la portion proximale.The needle 44 extends in the continuity of the proximal portion.

Le pointeau 44 comprend un obturateur à l'interface entre la portion distale et la portion proximale et est apte à réguler le débit du fluide sous pression passant de la portion distale à la portion proximale. Plus particulièrement, l'obturateur est mobile en translation pour régler la surface de passage entre la portion distale et la portion proximale.The needle 44 comprises an obturator at the interface between the distal portion and the proximal portion and is able to regulate the flow of pressurized fluid passing from the distal portion to the proximal portion. More particularly, the shutter is movable in translation to adjust the passage surface between the distal portion and the proximal portion.

Le corps 12 présente en outre un conduit d'actionnement 42 depuis la cavité 30 jusqu'à l'orifice d'éjection 34.The body 12 also has an actuation duct 42 from the cavity 30 to the ejection orifice 34.

Dans l'exemple représenté, le conduit d'actionnement 42 s'étend selon un axe d'extension principal, correspondant ici à l'axe d'extension du canon 18 et de la culasse 22.In the example shown, the actuation duct 42 extends along a main axis of extension, corresponding here to the axis of extension of the barrel 18 and of the breech 22.

Le conduit d'actionnement 42 définit une chambre 46 en amont de l'orifice d'éjection 34.The actuation conduit 42 defines a chamber 46 upstream of the ejection orifice 34.

La chambre 46 est pourvue d'un siège 47 à la jonction entre la chambre 46 et le conduit d'alimentation 37.Chamber 46 is provided with a seat 47 at the junction between chamber 46 and supply conduit 37.

Le siège 47 présente en particulier une forme s'évasant vers la chambre 46.The seat 47 in particular has a shape that widens towards the chamber 46.

Le conduit d'actionnement 42 présente un rétrécissement 49 entre la cavité 30 et la chambre 46, c'est-à-dire une portion dans laquelle le diamètre du conduit d'actionnement 42 est strictement inférieur à celui de la chambre 46 et à celui de la cavité 30, le diamètre étant pris radialement par rapport à la direction d'extension du conduit 42.The actuation duct 42 has a constriction 49 between the cavity 30 and the chamber 46, that is to say a portion in which the diameter of the actuation duct 42 is strictly less than that of the chamber 46 and than that of the cavity 30, the diameter being taken radially relative to the direction of extension of the duct 42.

Le pistolet pulvérisateur 10 comprend un système d'actionnement 48, ledit système d'actionnement 48 étant ici agencé dans le conduit d'actionnement 42.The spray gun 10 comprises an actuation system 48, said actuation system 48 here being arranged in the actuation conduit 42.

Le système d'actionnement 48 comprend un organe d'obturation 50 mobile relativement au corps 12 entre une position de libération du conduit d'alimentation 37, dans laquelle il permet la circulation du produit fluide entre l'orifice d'alimentation 33 et l'orifice d'éjection 34, et une position d'obturation du conduit d'alimentation 37, dans laquelle il s'oppose à la circulation du produit fluide entre l'orifice d'alimentation 33 et l'orifice d'éjection 34.The actuation system 48 comprises a shutter member 50 movable relative to the body 12 between a release position of the supply conduit 37, in which it allows the circulation of the fluid product between the supply orifice 33 and the ejection orifice 34, and a closed position of the supply duct 37, in which it opposes the circulation of the fluid product between the supply orifice 33 and the ejection orifice 34.

L'organe d'obturation 50 est en particulier mobile en translation relativement au corps 12 entre ses positions de libération et d'obturation suivant la direction d'extension du conduit d'actionnement 42.The closure member 50 is in particular movable in translation relative to the body 12 between its release and closure positions in the direction of extension of the actuating conduit 42.

L'organe d'obturation 50 comprend une tige 52 s'étendant dans la le conduit d'actionnement 42 et une tête 54 s'étendant dans la chambre 46.The shutter member 50 comprises a rod 52 extending in the actuation duct 42 and a head 54 extending in the chamber 46.

Le conduit d'alimentation 37 débouche à l'entrée de la chambre 46 à l'opposé de l'orifice d'éjection 34, en amont de la tête 54 de l'organe d'obturation 50.The supply duct 37 emerges at the inlet of the chamber 46 opposite the ejection orifice 34, upstream of the head 54 of the closure member 50.

La tige 52 présente un diamètre sensiblement égal au diamètre du rétrécissement 49 du conduit d'actionnement 42.The rod 52 has a diameter substantially equal to the diameter of the constriction 49 of the actuation duct 42.

L'organe d'obturation 50 forme un pointeau qui, lorsque l'organe d'obturation 50 est dans sa position d'obturation, est en appui contre le siège 47 et, lorsque l'organe d'obturation 50 est dans sa position de libération, est à l'écart du siège 47. Ceci offre une grande souplesse dans l'ajustement du débit de sortie du produit fluide provenant de l'orifice d'alimentation 33 en fonction du déplacement de l'organe d'obturation 50 entre ses positions d'obturation et de libération.The shutter member 50 forms a needle which, when the shutter member 50 is in its shutter position, bears against the seat 47 and, when the shutter member 50 is in its release, is away from the seat 47. This offers great flexibility in adjusting the output flow rate of the fluid product coming from the supply orifice 33 according to the movement of the closure member 50 between its shutter and release positions.

Le système d'actionnement 48 comprend en outre un organe 54 de rappel de l'organe d'obturation 50 vers sa position d'obturation. Cet organe de rappel 54 est ici formé par un ressort de compression orienté suivant la direction d'extension de la culasse 22 et comprimé entre, d'une part, un fond de la culasse 22 et, d'autre part, une butée solidaire de l'organe d'obturation 50.Actuation system 48 further comprises a member 54 for returning shutter member 50 to its closed position. This return member 54 is here formed by a compression spring oriented in the direction of extension of the cylinder head 22 and compressed between, on the one hand, a bottom of the cylinder head 22 and, on the other hand, an abutment integral with the shutter member 50.

Le pistolet pulvérisateur 10 comprend une gâchette 58 prévue pour activer le système d'actionnement 48 en position de libération.The spray gun 10 includes a trigger 58 provided to activate the actuation system 48 in the release position.

La gâchette 58 comprend une branche principale 59 et deux flasques 60.The trigger 58 comprises a main branch 59 and two flanges 60.

La branche principale 59 définit une surface de préhension destinée à recevoir au moins un doigt d'un opérateur tenant la crosse 20 dans sa paume.The main branch 59 defines a gripping surface intended to receive at least one finger of an operator holding the stock 20 in his palm.

Les flasques 60 sont espacés l'un de l'autre et s'étendent chacun vers le haut depuis un bord latéral respectif de la branche principale 59. Les flasques 60 prennent le corps 12, et plus particulièrement le canon 18, en sandwich.The flanges 60 are spaced apart and each extend upward from a respective side edge of the main leg 59. The flanges 60 sandwich the body 12, and more particularly the barrel 18.

La gâchette 58 est montée pivotante autour d'un axe de pivot A-A', transversal, relativement au corps 12, cet axe de pivot A-A' étant, dans l'exemple représenté, au-dessus du canon 18.The trigger 58 is pivotally mounted about a pivot axis A-A', transverse, relative to the body 12, this pivot axis A-A' being, in the example shown, above the barrel 18.

A cet effet, les flasques 60 de la gâchette 58 sont traversés par un arbre commun 61 engagé à travers le corps 12. L'arbre commun 61 s'étend selon l'axe de pivot A-A'.For this purpose, the flanges 60 of the trigger 58 are traversed by a common shaft 61 engaged through the body 12. The common shaft 61 extends along the pivot axis A-A'.

L'arbre commun 61 forme une liaison pivot entre la gâchette 58 et le corps 12 de sorte que la gâchette 58 est mobile en rotation autour de l'axe de pivot A-A' relativement au corps 12 entre une position actionnée, dans laquelle la gâchette 58 est déplacée vers la crosse 20 et l'organe d'obturation 50 est dans sa position de libération, et une position d'amorçage, dans laquelle la gâchette 58 est à l'écart de la crosse 20 et l'organe d'obturation 50 est dans sa position d'obturation.The common shaft 61 forms a pivot connection between the sear 58 and the body 12 so that the sear 58 is rotatable about the pivot axis A-A' relative to the body 12 between an actuated position, in which the sear 58 is moved towards the butt 20 and the obturation member 50 is in its release position, and a priming position, in which the sear 58 is away from the butt 20 and the obturation member 50 is in its closed position.

Le corps 12 présente en outre un conduit de passage de fluide sous pression.The body 12 also has a pressurized fluid passage conduit.

Le conduit de passage de fluide sous pression comprend une chambre 62.The pressurized fluid passage conduit comprises a chamber 62.

La chambre 62 présente une sortie 63 de fluide sous pression.The chamber 62 has an outlet 63 for pressurized fluid.

La sortie 63 est ici délimitée à l'avant de la chambre 62.The exit 63 is here delimited at the front of the chamber 62.

La sortie 63 est reliée fluidiquement à au moins une, ici deux, sorties 92 agencées au niveau de l'éjection du produit fluide du pistolet pulvérisateur, par exemple par un conduit intermédiaire 90 et/ou une chambre intermédiaire 91.The outlet 63 is fluidically connected to at least one, here two, outlets 92 arranged at the level of the ejection of the fluid product from the spray gun, for example by an intermediate conduit 90 and/or an intermediate chamber 91.

Le conduit intermédiaire entoure ici le conduit d'alimentation 37 et la chambre intermédiaire entoure la chambre 46 du conduit d'actionnement 42.The intermediate duct here surrounds the supply duct 37 and the intermediate chamber surrounds the chamber 46 of the actuation duct 42.

Additionnellement ou alternativement, la chambre 62 présente une sortie secondaire par au moins un conduit, ici une pluralité de conduits 93, agencé dans une portion centrale de la chambre 62. La sortie secondaire est reliée fluidiquement à au moins un orifice 96 agencé à l'extrémité avant 24 du canon, par exemple via une ou des chambres 94, 95 entourant la chambre 46 du conduit d'actionnement 42.Additionally or alternatively, the chamber 62 has a secondary outlet through at least one conduit, here a plurality of conduits 93, arranged in a central portion of the chamber 62. The secondary outlet is fluidically connected to at least one orifice 96 arranged at the front end 24 of the barrel, for example via one or more chambers 94, 95 surrounding the chamber 46 of the actuation duct 42.

La chambre 62 est en outre reliée fluidiquement à la cavité 30, et ainsi à l'orifice d'entrée 32 en fluide sous pression.The chamber 62 is also fluidically connected to the cavity 30, and thus to the pressurized fluid inlet 32.

La chambre 62 présente une ouverture à l'opposé de sa sortie 63 selon une direction d'extension D de la chambre.The chamber 62 has an opening opposite its outlet 63 along a direction of extension D of the chamber.

Le kit 16 comprend une chemise 64, un raccord 66 et une bague 68.Kit 16 includes liner 64, fitting 66 and ring 68.

La chemise 64 présente, par exemple, une forme générale de cylindre creux.The sleeve 64 has, for example, the general shape of a hollow cylinder.

La chemise 64 s'étend selon un axe d'extension principal entre une extrémité distale et une extrémité proximale.Sleeve 64 extends along a main extension axis between a distal end and a proximal end.

La chemise 64 délimite un volume interne 70, le volume interne étant prévu pour contenir un fluide.The jacket 64 delimits an internal volume 70, the internal volume being designed to contain a fluid.

La chemise 64 présente une surface circonférentielle externe 72, formant une périphérie radiale de la chemise 64, et une surface circonférentielle interne 74 délimitant le volume interne 70.The sleeve 64 has an outer circumferential surface 72, forming a radial periphery of the sleeve 64, and an inner circumferential surface 74 delimiting the internal volume 70.

La chemise 64 comprend une sortie de fluide sur sa surface circonférentielle externe 72 comme décrit ci-après.Sleeve 64 includes a fluid outlet on its outer circumferential surface 72 as described below.

La surface circonférentielle externe 72 présente un évidement 73 sur une circonférence de la chemise 64, ici un évidement cylindrique.The outer circumferential surface 72 has a recess 73 on a circumference of the sleeve 64, here a cylindrical recess.

L'évidement 73 est espacé de chacune des extrémités distale et proximale de la chemise 64.Recess 73 is spaced from each of the distal and proximal ends of sleeve 64.

La surface circonférentielle interne 74 présente un chambrage 75, ici cylindrique. Le chambrage 75 s'étend sur une partie de la surface circonférentielle interne 74 à partir de l'extrémité proximale de la chemise 64.The inner circumferential surface 74 has a recess 75, here cylindrical. The recess 75 extends over a portion of the inner circumferential surface 74 from the proximal end of the sleeve 64.

La chemise 64 délimite au moins un orifice 76.The sleeve 64 delimits at least one orifice 76.

Le ou chaque orifice 76 traverse la paroi de la chemise 64.The or each orifice 76 passes through the wall of the sleeve 64.

Le ou chaque orifice 76 débouche sur la périphérie radiale 72 et relie fluidiquement le volume interne 70 et la périphérie radiale 72.The or each orifice 76 opens onto the radial periphery 72 and fluidically connects the internal volume 70 and the radial periphery 72.

Le ou chaque orifice 76 traverse la chemise 64 de la surface circonférentielle externe 72 à la surface circonférentielle interne 74.The or each orifice 76 passes through the sleeve 64 from the outer circumferential surface 72 to the inner circumferential surface 74.

Plus particulièrement, le ou chaque orifice 76 relie fluidiquement l'évidement 73 de la surface circonférentielle externe 72 et le chambrage 75 de la surface circonférentielle interne 74.More particularly, the or each orifice 76 fluidically connects the recess 73 of the outer circumferential surface 72 and the recess 75 of the inner circumferential surface 74.

L'évidement 73 définit ici la sortie de fluide de la chemise 64, ici depuis le volume interne 70.The recess 73 here defines the fluid outlet of the sleeve 64, here from the internal volume 70.

Alternativement, en l'absence d'évidement, la sortie de fluide de la chemise 64 est, par exemple, définie par le ou chaque orifice 76 débouchant dans la surface circonférentielle externe 72.Alternatively, in the absence of a recess, the fluid outlet from the sleeve 64 is, for example, defined by the or each orifice 76 opening into the outer circumferential surface 72.

Dans l'exemple représenté, la chemise 64 délimite un ou plusieurs orifices 76 répartis sur la circonférence de la chemise 64.In the example shown, the sleeve 64 delimits one or more orifices 76 distributed over the circumference of the sleeve 64.

Chaque orifice 76 traverse la chemise 64 selon un axe respectif. L'axe respectif de chaque orifice 76 forme avec l'axe d'extension principale de la chemise 64 un angle compris entre 30° et 90°, plus particulièrement entre 45° et 75°.Each orifice 76 passes through sleeve 64 along a respective axis. The respective axis of each orifice 76 forms with the main extension axis of the jacket 64 an angle of between 30° and 90°, more particularly between 45° and 75°.

Les orifices 76 sont ici, plus particulièrement, répartis de sorte que leurs axes respectifs soient situés sur un même cône ayant pour génératrice l'axe d'extension principale de la chemise 64.The orifices 76 are here, more particularly, distributed so that their respective axes are located on the same cone having as generatrix the main extension axis of the sleeve 64.

La chemise 64 est configurée pour être raccordée au corps principal 12.Jacket 64 is configured to be connected to main body 12.

Plus particulièrement, la chemise 64 est ici reliée à une chambre ouverte du corps principal, ici la chambre 62 du conduit de passage de fluide sous pression, de sorte que la chambre ouverte et le volume interne de la chemise définissent ensemble un unique volume commun.More particularly, the sleeve 64 is here connected to an open chamber of the main body, here the chamber 62 of the pressurized fluid passage conduit, so that the open chamber and the internal volume of the sleeve together define a single common volume.

L'axe d'extension principal de la chemise 64 s'étend selon la direction d'extension D de la chambre 62.The main axis of extension of the sleeve 64 extends along the direction of extension D of the chamber 62.

Plus particulièrement, l'extrémité proximale de la chemise 64 est insérée dans l'ouverture de la chambre 62 du conduit de passage de fluide sous pression.More particularly, the proximal end of the sleeve 64 is inserted into the opening of the chamber 62 of the pressurized fluid passage conduit.

L'ouverture présente, par exemple, un filetage et une partie de la surface circonférentielle externe 72 de la chemise 64 présente un taraudage complémentaire à partir de l'extrémité proximale de la chemise 64.The opening has, for example, a thread and a portion of the outer circumferential surface 72 of the sleeve 64 has a complementary thread from the proximal end of the sleeve 64.

Le pistolet pulvérisateur 10 comprend en outre un pointeau 78 agencé dans le volume interne de la chemise 64 et dans la chambre ouverte 62, le pointeau 78 étant apte à réguler le passage de fluide entre la chambre 62 du conduit de passage de fluide sous pression et le conduit intermédiaire 90.The spray gun 10 further comprises a needle 78 arranged in the internal volume of the jacket 64 and in the open chamber 62, the needle 78 being able to regulate the passage of fluid between the chamber 62 of the pressurized fluid passage conduit and the intermediate duct 90.

Le pointeau 78 comprend un obturateur mobile en translation dans la chambre 62 agencé pour régler la surface de passage de la sortie 63 de la chambre 62.The needle 78 comprises a movable shutter in translation in the chamber 62 arranged to adjust the passage surface of the outlet 63 of the chamber 62.

Le pointeau 78 coopère avec la surface circonférentielle interne 74 de la chemise 64. La chemise 64 présente, par exemple, un taraudage sur une partie de la surface circonférentielle interne 74 à partir de l'extrémité distale, le pointeau présentant un filetage complémentaire.The needle 78 cooperates with the inner circumferential surface 74 of the sleeve 64. The sleeve 64 has, for example, a thread on a part of the inner circumferential surface 74 from the distal end, the needle having a complementary thread.

Le pointeau 78 occupe ici l'ensemble du volume interne 70 de la chemise 64 à l'exception du volume défini par le chambrage 75.The needle 78 here occupies the entire internal volume 70 of the sleeve 64 with the exception of the volume defined by the recess 75.

Le conduit de passage de fluide sous pression permet ainsi d'insérer sélectivement du fluide sous pression de l'orifice d'entrée 32 de fluide sous pression vers la ou les sorties 92 agencées au niveau de l'éjection du produit fluide du pistolet pulvérisateur.The pressurized fluid passage conduit thus makes it possible to selectively insert pressurized fluid from the pressurized fluid inlet 32 to the outlet or outlets 92 arranged at the level of the ejection of the fluid product from the spray gun.

Le raccord 66 présente une extrémité de prélèvement 80 et une extrémité de raccordement 82.Connector 66 has a tapping end 80 and a connecting end 82.

Le raccord 66 comprend ici un tuyau s'étendant entre l'extrémité de prélèvement 80 et l'extrémité de raccordement 82.The connector 66 here comprises a pipe extending between the sampling end 80 and the connection end 82.

L'extrémité de prélèvement 80 est directement reliée à la sortie de fluide de la chemise 64 sur sa périphérie radiale.The sampling end 80 is directly connected to the fluid outlet of the sleeve 64 on its radial periphery.

L'extrémité de raccordement 82 est ici reliée au godet 14 de manière à relier fluidiquement le godet 14, plus particulièrement le réservoir 15, à la sortie d'air de la chemise 64.The connection end 82 is here connected to the cup 14 so as to fluidically connect the cup 14, more particularly the reservoir 15, to the air outlet of the jacket 64.

Le raccord 66 est avantageusement pourvu d'un régulateur 84 apte à contrôler la pression de fluide traversant l'extrémité de prélèvement 80.The connector 66 is advantageously provided with a regulator 84 capable of controlling the fluid pressure passing through the sampling end 80.

Le régulateur 84 permet, par exemple, de régler le passage de fluide tel que la pression du fluide soit compris entre 0 et 6 bar.The regulator 84 makes it possible, for example, to adjust the passage of fluid such that the pressure of the fluid is between 0 and 6 bar.

Alternativement, le régulateur 84 est apte à contrôler le débit de fluide traversant l'extrémité de prélèvement 80.Alternatively, the regulator 84 is able to control the fluid flow passing through the sampling end 80.

Dans l'exemple représenté sur les figures 1 à 3, le régulateur 84 est vissé directement en sortie de la bague 68.In the example shown on the figures 1 to 3 , the regulator 84 is screwed directly at the outlet of the ring 68.

La bague 68 entoure la chemise 64.Ring 68 surrounds sleeve 64.

La bague 68 recouvre l'ensemble de la sortie de fluide de la chemise 64 sur la périphérie radiale, plus particulièrement ici de l'évidement 73, à l'exception du raccordement de l'extrémité de prélèvement 80 du raccord 66.The ring 68 covers the entire fluid outlet of the sleeve 64 on the radial periphery, more particularly here of the recess 73, with the exception of the connection of the sampling end 80 of the connector 66.

Plus particulièrement, la bague 68 comprend une portion cylindrique entourant la chemise 64 au moins autour de la sortie de fluide de la chemise 64. La portion cylindrique comprend un orifice radial pour le passage de l'extrémité de prélèvement 80 du raccord 66.More particularly, the ring 68 comprises a cylindrical portion surrounding the jacket 64 at least around the fluid outlet of the jacket 64. The cylindrical portion comprises a radial orifice for the passage of the sampling end 80 of the connector 66.

La bague 68 et/ou la chemise 64 est pourvue de joints toriques 86 situés de part et d'autre de l'évidement 73.The ring 68 and/or the sleeve 64 is provided with O-rings 86 located on either side of the recess 73.

Cela permet notamment de garantir l'étanchéité entre le corps principal 12 et le raccord 66 via la bague 68.This makes it possible in particular to guarantee the seal between the main body 12 and the connector 66 via the ring 68.

Un tel kit permet le prélèvement de manière sélective de fluide sous pression pour mettre sous pression le produit fluide contenu dans le godet 14.Such a kit allows the selective removal of pressurized fluid to pressurize the fluid product contained in the cup 14.

Le produit fluide 14 est, par exemple, mis sous une pression comprise entre 0 et 6 bar.The fluid product 14 is, for example, placed under a pressure of between 0 and 6 bar.

La bague 68 est en outre ici libre en rotation autour de l'axe d'extension principal de la chemise 64 au moins sur un intervalle angulaire donné.The ring 68 is also here free to rotate around the main axis of extension of the sleeve 64 at least over a given angular interval.

L'intervalle angulaire donné est, par exemple, sensiblement égal à 180°.The given angular interval is, for example, substantially equal to 180°.

Alternativement, l'intervalle angulaire donné est égal à 360°.Alternatively, the given angular interval is equal to 360°.

La bague 68 est ici libre en rotation entre une position droite et une position gauche.The ring 68 is here free to rotate between a right position and a left position.

Dans la position droite, l'extrémité de prélèvement 80 du raccord 66 est reliée à la chemise 64 à droite du corps principal 12, plus particulièrement du conduit de passage de fluide sous pression, par rapport à un utilisateur du pistolet.In the straight position, the sampling end 80 of the connector 66 is connected to the jacket 64 to the right of the main body 12, more particularly of the pressurized fluid passage duct, with respect to a user of the gun.

Le robinet du régulateur 84 du raccord 66 est alors facilement accessible par la droite, notamment par la main droite de l'utilisateur.The valve of the regulator 84 of the connection 66 is then easily accessible from the right, in particular by the right hand of the user.

Dans la position gauche, visible sur la figure 1, l'extrémité de prélèvement 80 du raccord 66 est reliée à la chemise 64 à gauche du corps principal 12, plus particulièrement du conduit de passage de fluide sous pression, par rapport à un utilisateur du pistolet.In the left position, visible on the figure 1 , the sampling end 80 of the connector 66 is connected to the jacket 64 to the left of the main body 12, more particularly of the pressurized fluid passage duct, with respect to a user of the gun.

Le robinet du régulateur 84 du raccord 66 est alors facilement accessible par la droite, notamment par la main gauche du pistolet.The valve of the regulator 84 of the connection 66 is then easily accessible from the right, in particular by the left hand of the gun.

Cela permet notamment d'adapter le pistolet pulvérisateur, et plus particulièrement le kit, à une utilisation par un droitier ou un gaucher.This makes it possible in particular to adapt the spray gun, and more particularly the kit, to use by a right-handed or a left-handed person.

Dans un mode de réalisation avantageux, la bague présente au moins un élément d'indexation, ici deux éléments d'indexation.In an advantageous embodiment, the ring has at least one indexing element, here two indexing elements.

Le corps principal présente au moins un élément d'indexation complémentaire, ici un unique élément d'indexation complémentaire, prévu pour coopérer avec l'au moins un élément d'indexation pour bloquer la bague 68 dans au moins une position donnée par rapport au corps principal 12.The main body has at least one complementary indexing element, here a single complementary indexing element, provided to cooperate with the at least one indexing element to block the ring 68 in at least one given position relative to the body main 12.

La ou chaque position donnée correspond à une position angulaire de la bague donnée autour de l'axe principal.The or each given position corresponds to a given angular position of the ring around the main axis.

Plus particulièrement ici, l'au moins une position donnée comprend la position droite et la position gauche.More particularly here, the at least one given position comprises the right position and the left position.

Les éléments d'indexation de la bague sont, par exemple, des méplats, l'élément d'indexation complémentaire du corps principal 12 étant un méplat agencé pour coopérer avec un premier des méplats de la bague en position droite et avec un deuxième des méplats de la bague en position gauche.The indexing elements of the ring are, for example, flats, the complementary indexing element of the main body 12 being a flat arranged to cooperate with a first of the flats of the ring in the straight position and with a second of the flats of the ring in the left position.

Alternativement, les éléments d'indexation de la bague sont des doigts rétractables, l'élément d'indexation complémentaire du corps principal 12 étant un trou prévu pour coopérer avec un premier des doigts en position droite et avec un deuxième des doigts en position gauche.Alternatively, the indexing elements of the ring are retractable fingers, the complementary indexing element of the main body 12 being a hole provided to cooperate with a first of the fingers in the right position and with a second of the fingers in the left position.

Alternativement, les éléments d'indexation de la bague sont des trous, l'élément d'indexation complémentaire du corps principal 12 étant un doigt rétractable prévu pour s'insérer dans un premier des trous en position droite et dans un deuxième des trous en position gauche.Alternatively, the indexing elements of the ring are holes, the complementary indexing element of the main body 12 being a finger retractable designed to be inserted into a first of the holes in the right position and into a second of the holes in the left position.

Dans un mode de réalisation alternatif non représenté, l'évidement est creusé dans la bague 68, plus particulièrement dans une surface circonférentielle interne de la bague 68 s'étendant face à la surface circonférentielle externe 72 de la chemise 64.In an alternative embodiment not shown, the recess is dug in the ring 68, more particularly in an inner circumferential surface of the ring 68 extending opposite the outer circumferential surface 72 of the sleeve 64.

L'orifice 76 relie alors fluidiquement la surface circonférentielle externe 72 de la chemise 64 faisant face à l'évidement creusé dans la bague 68 et le chambrage 75 de la surface circonférentielle interne 74 de la chemise 64.The orifice 76 then fluidically connects the outer circumferential surface 72 of the sleeve 64 facing the recess dug in the ring 68 and the recess 75 of the inner circumferential surface 74 of the sleeve 64.

Ledit mode de réalisation alternatif est similaire par ailleurs.Said alternative embodiment is otherwise similar.

Dans un mode de réalisation alternatif non représenté, l'évidement est creusé à la fois dans la chemise 64 et dans la bague 68, plus particulièrement dans la surface circonférentielle externe 72 de la chemise 64 et une surface circonférentielle interne de la bague 68 s'étendant face à la surface circonférentielle externe 72 de la chemise 64.In an alternative embodiment not shown, the recess is dug both in the sleeve 64 and in the ring 68, more particularly in the outer circumferential surface 72 of the sleeve 64 and an inner circumferential surface of the ring 68 s' extending opposite the outer circumferential surface 72 of the liner 64.

Ledit mode de réalisation alternatif est similaire par ailleurs.Said alternative embodiment is otherwise similar.

Dans un mode de réalisation alternatif, le régulateur est monté en ligne entre le kit 16 dépourvu de régulateur, par exemple tel que représenté sur la figure 4, et le godet 14. Plus particulièrement, le régulateur comprend une entrée reliée fluidiquement, par exemple par un tuyau, au kit, plus particulièrement à la sortie de fluide de la chemise, et une sortie reliée fluidiquement, par exemple par un tuyau, au godet.In an alternative embodiment, the regulator is mounted in line between the kit 16 without regulator, for example as represented on the figure 4 , and the cup 14. More particularly, the regulator comprises an inlet fluidically connected, for example by a pipe, to the kit, more particularly to the fluid outlet of the jacket, and an outlet fluidly connected, for example by a pipe, to the bucket.

Un exemple alternatif de kit est représenté sur la figure 5. Les éléments similaires sont référencés similairement avec une référence incrémentée de 100. Seuls les points par lesquels l'exemple alternatif diffère du kit précédemment décrit sont décrits par la suite.An alternative example of a kit is shown in the figure 5 . Similar items are referenced similarly with a reference incremented by 100. Only the points in which the alternative example differs from the kit previously described are described below.

Le régulateur 184 est incorporé directement dans la bague 168 du kit 116.Regulator 184 is incorporated directly into ring 168 of kit 116.

Plus particulièrement, le régulateur 184 est solidaire de la portion cylindrique entourant la chemise 164.More specifically, regulator 184 is integral with the cylindrical portion surrounding sleeve 164.

L'orifice radial de la portion cylindrique de la bague 168 est relié fluidiquement au régulateur 184.The radial orifice of the cylindrical portion of ring 168 is fluidly connected to regulator 184.

Le régulateur 184 présente une sortie 165 pour le raccord d'un tuyau.Regulator 184 has an outlet 165 for connecting a hose.

Le régulateur 184 est apte à régler le débit et/ou la pression du fluide le traversant, c'est-à-dire entre l'orifice radial de la portion cylindrique de la bague 168 et la sortie 165.The regulator 184 is capable of adjusting the flow rate and/or the pressure of the fluid passing through it, that is to say between the radial orifice of the cylindrical portion of the ring 168 and the outlet 165.

Le raccord entre l'orifice radial de la portion cylindrique et le godet comprend, dans ledit exemple, le régulateur 184 et le tuyau s'étendant depuis la sortie 165.The connection between the radial port of the cylindrical portion and the cup comprises, in said example, the regulator 184 and the pipe extending from the outlet 165.

Un procédé d'utilisation d'un kit pour pistolet pulvérisateur tel que décrit précédemment va maintenant être décrit.A method of using a spray gun kit as previously described will now be described.

Le procédé comprend les étapes suivantes :

  • fourniture d'un kit 16, 116 pour pistolet pulvérisateur tel que décrit précédemment,
  • fourniture d'un pistolet pulvérisateur 10 comprenant un corps principal 12 définissant une chambre ouverte 62 et un godet 14 définissant un réservoir 15,
  • fixation de la chemise 64, 164 sur le corps principal 12 de manière à ce que la chambre ouverte 62 et le volume interne 70 de la chemise 64, 164 définissent ensemble un unique volume, et
  • raccordement de l'extrémité de raccordement 82 au godet 14, de manière à relier fluidiquement le volume interne 70 de la chemise 64, 164 au réservoir 15 du godet 14.
The process includes the following steps:
  • supply of a kit 16, 116 for a spray gun as described above,
  • providing a spray gun 10 comprising a main body 12 defining an open chamber 62 and a cup 14 defining a reservoir 15,
  • attachment of the sleeve 64, 164 to the main body 12 so that the open chamber 62 and the internal volume 70 of the sleeve 64, 164 together define a single volume, and
  • connection of the connection end 82 to the cup 14, so as to fluidically connect the internal volume 70 of the jacket 64, 164 to the reservoir 15 of the cup 14.

Pendant l'étape de fixation de la chemise sur le corps principal, l'extrémité proximale de la chemise 64, 164 est ici insérée dans la chambre 62 ouverte. Plus particulièrement, la chemise 64, 164 est vissée dans l'ouverture de la chambre 62.During the step of attaching the sleeve to the main body, the proximal end of the sleeve 64, 164 is here inserted into the open chamber 62. More particularly, the sleeve 64, 164 is screwed into the opening of the chamber 62.

Le pointeau 78, 178 est en outre inséré dans le volume interne 70 de la chemise 64, 164. Plus particulièrement, le pointeau 78, 178 est vissé sur le filetage de la surface circonférentielle interne 74.The needle 78, 178 is further inserted into the internal volume 70 of the sleeve 64, 164. More particularly, the needle 78, 178 is screwed onto the thread of the inner circumferential surface 74.

La mise en place du kit sur le pistolet est particulièrement aisé.Installing the kit on the gun is particularly easy.

Dans un mode de réalisation alternatif non représenté, le pistolet pulvérisateur est prévu pour que le kit sous pression soit raccordé à un autre emplacement du pistolet.In an alternative embodiment not shown, the spray gun is provided so that the pressurized kit is connected to another location of the gun.

La chambre du conduit de passage de fluide sous pression est, par exemple, fermée directement par le pointeau emmanchée dans la chambre, par exemple à l'aide d'un manchon.The chamber of the pressurized fluid passage conduit is, for example, closed directly by the needle fitted into the chamber, for example using a sleeve.

Le kit est, par exemple, prévu pour être fixé autour du pointeau 44 de l'orifice d'entrée 32 en fluide sous pression.The kit is, for example, designed to be fixed around the needle 44 of the pressurized fluid inlet 32.

Le kit peut être prévu pour se fixer au niveau du raccord de l'orifice d'entrée 32.The kit can be designed to attach to the inlet port fitting 32.

Alternativement, le kit est prévu pour être fixé autour de la cavité 30 du conduit d'actionnement 42.Alternatively, the kit is designed to be fixed around the cavity 30 of the actuation duct 42.

Un tel kit permet donc d'adapter aisément le pistolet pulvérisateur pour prévoir un prélèvement de fluide sous pression en direction du réservoir du godet si besoin.Such a kit therefore makes it possible to easily adapt the spray gun to provide for a withdrawal of pressurized fluid in the direction of the tank of the cup if necessary.

En effet, si aucun prélèvement est nécessaire, le kit est apte à être retiré, la chambre du conduit de passage de fluide sous pression étant adaptée pour être fermée directement par le pointeau 78, par exemple, par emmanchement du pointeau dans la chambre, notamment à l'aide d'un manchon.Indeed, if no sampling is necessary, the kit is able to be removed, the chamber of the pressurized fluid passage duct being adapted to be closed directly by the needle 78, for example, by fitting the needle into the chamber, in particular using a sleeve.

Alternativement, si aucun prélèvement est nécessaire, le régulateur 84 est réglé de manière à ce que la surface de passage d'une circonférence dans le raccord 66 soit nulle.Alternatively, if no sampling is necessary, the regulator 84 is adjusted so that the passage surface of a circumference in the connector 66 is zero.

Si un prélèvement est nécessaire de manière à mettre sous pression le fluide dans le réservoir 15, le kit est facilement mis en place sur le pistolet à l'emplacement souhaité.If a sample is necessary in order to put the fluid in the reservoir 15 under pressure, the kit is easily placed on the gun at the desired location.

Le raccord permet alors de récupérer la pression, avantageusement de manière sélective, du fluide sous pression en un emplacement du pistolet pulvérisateur pour mettre sous pression le fluide compris dans le réservoir d'un godet.The connector then makes it possible to recover the pressure, advantageously selectively, of the pressurized fluid at a location of the spray gun in order to pressurize the fluid comprised in the reservoir of a cup.

Le pistolet sous pression avec le kit est en outre facilement manipulable par un utilisateur.The pressurized gun with the kit is also easily handled by a user.

Claims (12)

  1. A kit (16, 116) for a spray gun (10) comprising:
    - a sleeve (64, 164) delimiting an inner volume (70), the inner volume (70) being provided to contain a pressurized fluid, the sleeve (64, 164) being configured to be connected to a main body (12) of a spray gun (10),
    the sleeve (64, 164) having a radial periphery (72),
    the sleeve (64, 164) being provided with at least one orifice (76), the or each orifice (76) emerging on the radial periphery (72) and fluidly connecting the inner volume (70) and the radial periphery (72), the radial periphery (72) delimiting a fluid outlet of the sleeve (64, 164),
    - a connector (66) having an intake end (80) and a connecting end (82), the intake end (80) being connected to the fluid outlet of the sleeve (64, 164), the connecting end (82) being suitable for being connected to a cup (14) so as to fluidly connect the cup (14) to the inner volume (70) of the sleeve (64, 164),
    - a ring (68, 168) surrounding the sleeve (64, 164), the ring (68, 168) covering the fluid outlet on the radial periphery (72) outside the intake end (80) of the connector (66).
  2. The kit for a spray gun according to claim 1, wherein the or each orifice (76) passes through the sleeve (64, 164) along a respective axis, the respective axis of the or each orifice (76) forming, with the main extension axis of the sleeve (64, 164), an angle inclusively between 30° and 90°, more particularly between 45° and 75°.
  3. The kit for a spray gun according to claim 1 or 2, comprising a regulator (84, 184) able to control the pressure or the flow rate of fluid passing through the intake end (80).
  4. The kit for a spray gun according to any one of claims 1 to 3, wherein the sleeve (64, 164) and/or the ring (68, 168) have a recess (73) at the radial periphery (72), the or each orifice (76) emerging in the recess (73).
  5. The kit for a spray gun according to claim 4, wherein the recess (73) is at least partially hollowed in the sleeve (64, 164), the recess (73) forming the fluid outlet from the sleeve (64, 164).
  6. The kit for a spray gun according to claim 4 or 5, wherein the ring (68, 168) and/or the sleeve (64, 164) are provided with O-rings (86) located on either side of the recess (73).
  7. A method for using a kit (16, 116) for a spray gun according to any one of claims 1 to 6, comprising the following steps:
    - providing a kit (16, 116) for a spray gun according to any one of claims 1 to 6,
    - providing a spray gun (10) comprising a main body (12) defining an open chamber (62) and a cup (14) defining a reservoir (15),
    - fastening the sleeve (64, 164) on the main body (12) such that the open chamber (62) and the inner volume (70) of the sleeve (64, 164) together define a single volume, and
    - connecting the connecting end (82) to the cup (14), so as to fluidly connect the inner volume (70) of the sleeve (64, 164) to the reservoir (15) of the cup (14).
  8. A spray gun (10) comprising a main body (12), a cup (14) and a kit (16, 116) for a spray gun according to any one of claims 1 to 6, wherein the sleeve (64, 164) is connected to an open chamber (62) of the main body (12), such that the open chamber (62) and the inner volume (70) of the sleeve (64, 164) together define a single volume, the cup (14) defining a reservoir (15), the connecting end (82) being connected to the cup (14), the inner volume (70) of the sleeve (64, 164) being fluidly connected to the reservoir (15) of the cup (14) by the connector (66).
  9. The spray gun according to claim 8, comprising a needle (78, 178) extending partially in the open chamber (62), the sleeve (64, 164) surrounding the needle (78, 178), the inner volume (70) of the sleeve (64, 164) being defined between the needle (78, 178) and the sleeve (64, 164).
  10. The spray gun according to claim 8 or 9, wherein the open chamber (62) is fluidly connected to a pressurized fluid inlet orifice (32).
  11. The spray gun according to any one of claims 8 to 10, wherein the ring (68, 168) has at least one indexing element, the main body (12) having at least one complementary indexing element provided to cooperate with the at least one indexing element to block the ring (68, 168) in at least one given position relative to the main body (12).
  12. The spray gun according to claim 11, wherein the ring (68, 168) rotates freely about a main axis around the sleeve (64, 164), the given position of the ring (68, 168) corresponding to an angular position of the ring (68, 168) about the main axis.
EP20210226.5A 2019-11-29 2020-11-27 Kit for a spray gun, method of use and associated gun Active EP3827902B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1913481A FR3103716B1 (en) 2019-11-29 2019-11-29 Spray gun kit, method of use and associated gun

Publications (2)

Publication Number Publication Date
EP3827902A1 EP3827902A1 (en) 2021-06-02
EP3827902B1 true EP3827902B1 (en) 2022-08-10

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Application Number Title Priority Date Filing Date
EP20210226.5A Active EP3827902B1 (en) 2019-11-29 2020-11-27 Kit for a spray gun, method of use and associated gun

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US (1) US11931764B2 (en)
EP (1) EP3827902B1 (en)
JP (1) JP2021084107A (en)
KR (1) KR20210067921A (en)
ES (1) ES2926925T3 (en)
FR (1) FR3103716B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021191791A1 (en) * 2020-03-27 2021-09-30 3M Innovative Properties Company Spray gun converter
USD943710S1 (en) * 2020-05-19 2022-02-15 Zhejiang Rongpeng Air Tools Co., Ltd. Paint sprayer
USD950679S1 (en) * 2021-06-16 2022-05-03 Zhejiang Rongpeng Air Tools Co., Ltd. Paint spray gun
CN113857132B (en) * 2021-11-01 2022-11-11 成都川隆机电有限公司 Energy-saving spray gun for cleaning machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090530A (en) * 1960-06-27 1963-05-21 Vilbiss Co Air flow control for pressure feed containers
US9327300B2 (en) * 2013-09-11 2016-05-03 Fuji Industrial Spray Equipment Ltd. Spray gun with side-mounted fan control
CN107592827B (en) * 2015-05-12 2019-10-08 巴斯夫涂料有限公司 For the safety and control device of pressure vessel and the pressure vessel with safety and control device
CN114192303A (en) * 2018-01-26 2022-03-18 固瑞克明尼苏达有限公司 Sprayer and pressure reducing valve for sprayer

Also Published As

Publication number Publication date
US11931764B2 (en) 2024-03-19
US20210162438A1 (en) 2021-06-03
CN112871493A (en) 2021-06-01
FR3103716A1 (en) 2021-06-04
EP3827902A1 (en) 2021-06-02
KR20210067921A (en) 2021-06-08
FR3103716B1 (en) 2021-12-10
ES2926925T3 (en) 2022-10-31
JP2021084107A (en) 2021-06-03

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