法国专利FR3103716A1 Kit for spray gun, method of use and associated gun

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专利摘要:
Kit for a spray gun, method of use and associated gun The invention relates to a kit for a spray gun (10) comprising: - a jacket delimiting an internal volume intended to contain a pressurized fluid, the jacket being configured to be connected to a main body (12) of a spray gun (10), the jacket having a radial periphery delimiting a fluid outlet from the jacket and at least one orifice opening onto the radial periphery and fluidly connecting the internal volume and the radial periphery, - a connector (66) having a sampling end connected to the fluid outlet and a connection end adapted to be connected to a cup (14) so as to fluidly connect the cup (14) to the internal volume of the jacket, - a ring surrounding the liner and covering the fluid outlet outside the sampling end of the fitting. Figure for abstract: figure 1
公开号:FR3103716A1
申请号:FR1913481
申请日:2019-11-29
公开日:2021-06-04
发明作者:Mazen Zaki；Saman Shohoudi
申请人:Exel Industries SA；
IPC主号:

专利说明:

[0001] The present invention relates to a kit capable of pressurizing a fluid from a reservoir of a cup of a spray gun.
[0002] The present invention further relates to a method of using the spray gun kit and a gun comprising such a kit.
[0003] The product is fed into a bucket gun is usually done by suction or by gravity, in particular by the venturi effect / In the case of relatively viscous product, the bucket can be pressurized
[0004] Usually, a compressed air compressor is used to pressurize the fluid. The characteristics of the compressed air compressor are chosen as a function of the flow rate and pressure provided for the spray gun, to allow optimum adaptation of the gun as a function of the fluid to be applied.
[0005] 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 gun body to allow connection of the additional hose.
[0006] However, this requires a dedicated gun having said bore. In particular, such a gun is not adaptable for use with gravity.
[0007] An aim of the invention is therefore to provide a kit for a spray gun capable of pressurizing a fluid from a reservoir of a cup of a spray gun, which is simple and practical to use.
[0008] 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.
[0009] To this end, the invention relates to a kit for a spray gun comprising:
[0010] - a jacket delimiting an internal volume, the internal volume being designed to contain a pressurized fluid, the jacket being configured to be connected to a main body of a spray gun,
[0011] the liner having a radial periphery,
[0012] 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 defining a fluid outlet of the jacket,
[0013] - a connector having a sampling end and a connection end, the sampling end being connected to the fluid outlet of the jacket, the connection end being adapted to be connected to a cup so as to fluidly connect the cup the internal volume of the shirt,
[0014] - a ring surrounding the liner, the ring covering the fluid outlet on the radial periphery outside the sampling end of the fitting.
[0015] The fitting then makes it possible to recover the pressure, at least partial, of a fluid in a location of the spray gun to pressurize the fluid included in the reservoir of a cup.
[0016] The spray gun kit may also have one or more characteristics below, considered individually or in any technically possible combination:
[0017] - The or each orifice passes through the liner along a respective axis, the respective axis of the or each orifice forming with the main axis of extension of the liner an angle of between 30 ° and 90 °, more particularly between 45 ° and 75 °;
[0018] - the kit includes a regulator capable of controlling the pressure or the flow of fluid passing through the sampling end;
[0019] - the sleeve and / or the ring have a recess at the radial periphery, the or each orifice opening into the recess;
[0020] - the recess is at least partially hollowed out in the liner, the recess forming the fluid outlet of the liner; and or
[0021] - the ring and / or the sleeve are provided with O-rings located on either side of the recess
[0022] The invention further relates to a method of using a spray gun kit as described above, comprising the following steps:
[0023] - supply of a spray gun kit as described above,
[0024] - supply of a spray gun comprising a main body defining an open chamber and a cup defining a reservoir,
[0025] - attachment of the liner to the main body so that the open chamber and the internal volume of the liner together define a single volume, and
[0026] - connection of the connecting end to the bucket, so as to fluidly connect the internal volume of the jacket to the reservoir of the bucket.
[0027] 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 connecting end being connected to the cup, the internal volume of the liner being fluidly connected to the reservoir of the cup by the connection.
[0028] The spray gun may also have one or more characteristics below, considered individually or according to any technically possible combination:
[0029] - the gun comprises a needle extending partially into the open chamber, the jacket surrounding the needle, the internal volume of the jacket being defined between the needle and the jacket;
[0030] - the open chamber is fluidly connected to a pressurized fluid inlet port;
[0031] - the ring has at least one indexing element, the main body having at least one complementary indexing element designed to cooperate with the at least one indexing element to lock the ring in at least one given position relative to the main body; and or
[0032] - the ring is free to rotate around a main axis around the liner, the given position of the ring corresponding to an angular position of the ring around the main axis.
[0033] Other features and advantages of the invention will become apparent on reading the following description of embodiments of the invention, given by way of example only and with reference to the drawings in which:
[0034] figure 1 and
[0035] FIG. 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,
[0036] Figure 3 is a perspective view of the kit surrounding a needle of the spray gun of Figure 1, and
[0037] FIG. 4 is a sectional view of a ring and of a sleeve of a kit of the invention according to a second embodiment, without a regulator, surrounding a needle, and.
[0038] FIG. 5 is a perspective view of a kit surrounding a needle of the spray gun according to a third embodiment.
[0039] A spray gun 10 according to a first embodiment is shown in Figures 1 and 2.
[0040] The spray gun 10 is intended for spraying a fluid product.
[0041] 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.
[0042] The gun 10 includes a main body 12, a cup 14, and a spray gun kit 16.
[0043] The main body 12 has a first part 18, hereinafter called "barrel", similar to the barrel of a pistol, and a second part 20, hereinafter called "butt", similar to the butt of a pistol. In the example shown, the body 12 also includes a third part 22, hereinafter referred to as "breech", similar to the breech of a pistol.
[0044] The barrel 18 has a front end 24 which defines the front end of the body 12.
[0045] The butt 20 extends from a rear end 26 of the barrel 18.
[0046] The butt 20 here extends perpendicular to the barrel 18.
[0047] The butt 20 has a distal end 28 opposite the barrel 18. In other words, the distal end 28 constitutes the end of the butt 20 furthest from the barrel 18.
[0048] The butt 20 forms a handle for gripping the pistol 10 by an operator.
[0049] The breech 22 extends from the rear end 26 of barrel 18 in the continuation of barrel 18.
[0050] The breech 22 defines a cavity 30 with the butt 20 and the barrel 18.
[0051] The body 12 defines an inlet orifice 32 for pressurized fluid, a supply orifice 33 for supplying the gun 10 with a fluid product and an ejection orifice 34 for the ejection of the fluid product from the gun 10. .
[0052] The body 12 comprises an internal duct 36 fluidly connecting the inlet port 32 for pressurized fluid to the cavity 30.
[0053] The body 12 includes a supply duct 37 fluidly connecting the supply port 33 to the ejection port 34.
[0054] 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.
[0055] The pressurized fluid is, for example, air.
[0056] The pressurized fluid has a pressure greater than 200,000 hPa.
[0057] The pressurized fluid has a pressure of less than 1,000,000 hPa.
[0058] The pressurized fluid inlet 32 is here formed at the distal end 28 of the butt 20.
[0059] The feed orifice 33 is suitable for connecting a feed member of the gun 10 with a fluid.
[0060] This gun feed member is here the cup 14 comprising a reservoir 15 containing or capable of containing the fluid.
[0061] The cup 14 is connected to the second supply port by a connecting member.
[0062] The connecting member here comprises a first end fitted into the supply port 33 and a second end fitted into the reservoir 15.
[0063] The fluid product is, for example, paint.
[0064] The feed orifice 33 is here defined on the barrel 18 of the pistol.
[0065] Bucket 14 extends above barrel 18, i.e. on an opposite side of barrel 18 from butt 20.
[0066] In an alternative embodiment not shown, the cup 14 extends below the barrel 18, that is to say on the same side of the barrel 18 as the butt 20.
[0067] The ejection port 34 is provided in the front end 24 of the barrel 18.
[0068] Here, the ejection orifice 34 is suitable for mounting a nozzle 38 for shaping the fluid at the outlet of the spray gun 10.
[0069] The internal duct 36 is housed in the butt 20.
[0070] In the example shown, the spray gun 10 comprises a device for regulating the flow of pressurized fluid in the internal duct 36.
[0071] More particularly, the spray gun 10 comprises a needle 44 arranged in the internal duct 36.
[0072] The internal duct 36 comprises, for example, a distal portion here rectilinear and a proximal portion here rectilinear, the inlet port 32 for pressurized fluid being arranged at the level of the distal portion.
[0073] Needle 44 extends in continuity with the proximal portion.
[0074] The needle 44 includes an obturator at the interface between the distal portion and the proximal portion and is adapted to regulate the flow of pressurized fluid passing from the distal portion to the proximal portion. More particularly, the obturator is movable in translation to adjust the passage surface between the distal portion and the proximal portion.
[0075] The body 12 further has an actuation duct 42 from the cavity 30 to the ejection port 34.
[0076] In the example shown, the actuating duct 42 extends along a main axis of extension, corresponding here to the axis of extension of the barrel 18 and the breech 22.
[0077] The actuator duct 42 defines a chamber 46 upstream of the ejection port 34.
[0078] Chamber 46 is provided with a seat 47 at the junction between chamber 46 and supply duct 37.
[0079] The seat 47 has in particular a shape widening towards the chamber 46.
[0080] The actuating 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 actuating duct 42 is strictly less than that of the chamber 46 and that of the cavity 30, the diameter being taken radially with respect to the direction of extension of the duct 42.
[0081] The spray gun 10 comprises an actuation system 48, said actuation system 48 being here arranged in the actuation duct 42.
[0082] The actuation system 48 comprises a closure member 50 movable relative to the body 12 between a release position of the supply duct 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.
[0083] 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 duct 42.
[0084] The closure member 50 includes a rod 52 extending into the actuator duct 42 and a head 54 extending into the chamber 46.
[0085] The supply duct 37 opens at the inlet of the chamber 46 opposite the ejection orifice 34, upstream of the head 54 of the closure member 50.
[0086] The rod 52 has a diameter substantially equal to the diameter of the constriction 49 of the actuator duct 42.
[0087] The closure member 50 forms a needle which, when the closure member 50 is in its closed position, bears against the seat 47 and, when the closure member 50 is in its position of closure. release, is away from the seat 47. This offers great flexibility in the adjustment of the output flow rate of the fluid from the supply orifice 33 as a function of the movement of the closure member 50 between its shutter and release positions.
[0088] The actuation system 48 further comprises a member 54 for returning the closure 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, a stop integral with the closure member 50.
[0089] The spray gun 10 includes a trigger 58 intended to activate the actuation system 48 in the released position.
[0090] The trigger 58 comprises a main branch 59 and two flanges 60.
[0091] The main branch 59 defines a gripping surface intended to receive at least one finger of an operator holding the stick 20 in his palm.
[0092] The flanges 60 are spaced apart from each other and each extend upward from a respective side edge of the main branch 59. The flanges 60 sandwich the body 12, and more particularly the barrel 18.
[0093] 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.
[0094] For this purpose, the flanges 60 of the trigger 58 are crossed by a common shaft 61 engaged through the body 12. The common shaft 61 extends along the pivot axis A-A ’.
[0095] The common shaft 61 forms a pivot connection between the trigger 58 and the body 12 so that the trigger 58 is movable in rotation about the pivot axis A-A 'relative to the body 12 between an actuated position, in which the trigger 58 is moved towards the butt 20 and the closure member 50 is in its release position, and a priming position, in which the trigger 58 is away from the butt 20 and the member of shutter 50 is in its closed position.
[0096] The body 12 also has a pressurized fluid passage duct.
[0097] The pressurized fluid passage duct comprises a chamber 62.
[0098] The chamber 62 has an outlet 63 for pressurized fluid.
[0099] Exit 63 is bounded here in front of room 62.
[0100] The outlet 63 is fluidly connected to at least one, here two, outlets 92 arranged at the level of the ejection of the fluid from the spray gun, for example by an intermediate duct 90 and / or an intermediate chamber 91.
[0101] The intermediate duct here surrounds the supply duct 37 and the intermediate chamber surrounds the chamber 46 of the actuating duct 42.
[0102] Additionally or alternatively, the chamber 62 has a secondary outlet via at least one duct, here a plurality of ducts 93, arranged in a central portion of the chamber 62. The secondary outlet is fluidly connected to at least one orifice 96 arranged in the front end 24 of the barrel, for example via one or more chambers 94, 95 surrounding the chamber 46 of the actuating duct 42.
[0103] Chamber 62 is further fluidly connected to cavity 30, and thus to pressurized fluid inlet port 32.
[0104] The chamber 62 has an opening opposite its outlet 63 in an extension direction D of the chamber.
[0105] Kit 16 includes a sleeve 64, a fitting 66 and a ring 68.
[0106] The liner 64 has, for example, the general shape of a hollow cylinder.
[0107] Sleeve 64 extends along a major axis of extension between a distal end and a proximal end.
[0108] The jacket 64 defines an internal volume 70, the internal volume being designed to contain a fluid.
[0109] The liner 64 has an outer circumferential surface 72, forming a radial periphery of the liner 64, and an inner circumferential surface 74 delimiting the internal volume 70.
[0110] Jacket 64 includes a fluid outlet on its outer circumferential surface 72 as described below.
[0111] The outer circumferential surface 72 has a recess 73 on a circumference of the sleeve 64, here a cylindrical recess.
[0112] The recess 73 is spaced from each of the distal and proximal ends of the sleeve 64.
[0113] The internal circumferential surface 74 has a recess 75, here cylindrical. Recess 75 extends over a portion of inner circumferential surface 74 from the proximal end of liner 64.
[0114] The sleeve 64 delimits at least one orifice 76.
[0115] The or each orifice 76 passes through the wall of the liner 64.
[0116] The or each orifice 76 opens onto the radial periphery 72 and fluidly connects the internal volume 70 and the radial periphery 72.
[0117] The or each orifice 76 passes through the liner 64 from the outer circumferential surface 72 to the inner circumferential surface 74.
[0118] More particularly, the or each orifice 76 fluidly connects the recess 73 of the outer circumferential surface 72 and the recess 75 of the inner circumferential surface 74.
[0119] The recess 73 here defines the fluid outlet of the jacket 64, here from the internal volume 70.
[0120] Alternatively, in the absence of a recess, the fluid outlet of the jacket 64 is, for example, defined by the or each orifice 76 opening into the outer circumferential surface 72.
[0121] In the example shown, the liner 64 defines one or more orifices 76 distributed around the circumference of the liner 64.
[0122] Each orifice 76 passes through the liner 64 along a respective axis. The respective axis of each orifice 76 forms with the main extension axis of the liner 64 an angle of between 30 ° and 90 °, more particularly between 45 ° and 75 °.
[0123] The orifices 76 are here, more particularly, distributed so that their respective axes are located on the same cone having as a generator the axis of the main extension of the sleeve 64.
[0124] Jacket 64 is configured to connect to main body 12.
[0125] More particularly, the jacket 64 is here connected to an open chamber of the main body, here the chamber 62 of the pressurized fluid passage duct, so that the open chamber and the internal volume of the jacket together define a single common volume.
[0126] The main axis of extension of the liner 64 extends in the direction of extension D of the chamber 62.
[0127] More particularly, the proximal end of the sleeve 64 is inserted into the opening of the chamber 62 of the pressurized fluid passage duct.
[0128] The opening has, for example, a thread and part of the outer circumferential surface 72 of the sleeve 64 has a complementary thread from the proximal end of the sleeve 64.
[0129] 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 duct and the intermediate duct 90.
[0130] The needle 78 comprises a shutter movable in translation in the chamber 62 arranged to adjust the passage surface of the outlet 63 of the chamber 62.
[0131] The needle 78 cooperates with the inner circumferential surface 74 of the liner 64. The liner 64 has, for example, an internal thread on a portion of the inner circumferential surface 74 from the distal end, the needle having a complementary thread.
[0132] 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.
[0133] The pressurized fluid passage conduit thus makes it possible to selectively insert pressurized fluid from the pressurized fluid inlet port 32 to the outlet or outlets 92 arranged at the level of the ejection of the fluid from the spray gun.
[0134] The connector 66 has a sampling end 80 and a connection end 82.
[0135] The fitting 66 here comprises a pipe extending between the sampling end 80 and the connection end 82.
[0136] The sampling end 80 is directly connected to the fluid outlet of the jacket 64 on its radial periphery.
[0137] The connection end 82 is here connected to the cup 14 so as to fluidly connect the cup 14, more particularly the reservoir 15, to the air outlet of the jacket 64.
[0138] The connector 66 is advantageously provided with a regulator 84 capable of controlling the fluid pressure passing through the sampling end 80.
[0139] 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.
[0140] Alternatively, the regulator 84 is able to control the flow of fluid passing through the sampling end 80.
[0141] In the example shown in Figures 1 to 3, the regulator 84 is screwed directly out of the ring 68.
[0142] The ring 68 surrounds the shirt 64.
[0143] The ring 68 covers the entire fluid outlet of the jacket 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 fitting 66.
[0144] More particularly, the ring 68 comprises a cylindrical portion surrounding the liner 64 at least around the fluid outlet of the liner 64. The cylindrical portion includes a radial orifice for the passage of the sampling end 80 of the connector 66.
[0145] The ring 68 and / or the sleeve 64 is provided with O-rings 86 located on either side of the recess 73.
[0146] This makes it possible in particular to guarantee the seal between the main body 12 and the connector 66 via the ring 68.
[0147] Such a kit allows the selective sampling of pressurized fluid in order to pressurize the fluid product contained in the cup 14.
[0148] The fluid 14 is, for example, placed under a pressure of between 0 and 6 bar.
[0149] 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.
[0150] The given angular interval is, for example, substantially equal to 180 °.
[0151] Alternatively, the given angular interval is equal to 360 °.
[0152] The ring 68 is here free to rotate between a right position and a left position.
[0153] In the upright position, the sampling end 80 of the connector 66 is connected to the sleeve 64 to the right of the main body 12, more particularly of the pressurized fluid passage duct, relative to a user of the gun.
[0154] The regulator valve 84 of connection 66 is then easily accessible from the right, in particular by the user's right hand.
[0155] In the left position, visible in 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, relative to a user of the gun.
[0156] The regulator valve 84 of the connector 66 is then easily accessible from the right, in particular by the left hand of the gun.
[0157] This makes it possible in particular to adapt the spray gun, and more particularly the kit, for use by a right-handed or a left-handed person.
[0158] In an advantageous embodiment, the ring has at least one indexing element, here two indexing elements.
[0159] 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.
[0160] The or each given position corresponds to an angular position of the given ring around the main axis.
[0161] More particularly here, at least one given position includes the right position and the left position.
[0162] 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 upright position and with a second of the flats. of the ring in the left position.
[0163] 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.
[0164] Alternatively, the indexing elements of the ring are holes, the indexing element complementary to the main body 12 being a retractable finger intended to be inserted into a first of the holes in the upright position and into a second of the holes in position. left.
[0165] In an alternative embodiment not shown, the recess is hollowed out in the ring 68, more particularly in an inner circumferential surface of the ring 68 extending facing the outer circumferential surface 72 of the liner 64.
[0166] The orifice 76 then fluidly connects the outer circumferential surface 72 of the liner 64 facing the recess in the ring 68 and the recess 75 of the inner circumferential surface 74 of the liner 64.
[0167] Said alternative embodiment is otherwise similar.
[0168] In an alternative embodiment not shown, the recess is hollowed out 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 facing the outer circumferential surface 72 of the liner 64.
[0169] Said alternative embodiment is otherwise similar.
[0170] In an alternative embodiment, the regulator is mounted in line between the kit 16 devoid of regulator, for example as shown in FIG. 4, and the cup 14. More particularly, the regulator comprises an inlet connected fluidly, for example by a pipe, in the kit, more particularly at the fluid outlet of the jacket, and an outlet fluidly connected, for example by a pipe, to the cup.
[0171] An alternative example of a kit is shown in Figure 5. Similar elements are referenced similarly with a reference incremented by 100. Only the points where the alternative example differs from the previously described kit are described below.
[0172] The regulator 184 is incorporated directly into the ring 168 of the kit 116.
[0173] More particularly, the regulator 184 is integral with the cylindrical portion surrounding the sleeve 164.
[0174] The radial orifice of the cylindrical portion of the ring 168 is fluidly connected to the regulator 184.
[0175] The regulator 184 has an outlet 165 for connecting a hose.
[0176] The regulator 184 is able to adjust 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.
[0177] The connection between the radial orifice of the cylindrical portion and the cup comprises, in said example, the regulator 184 and the pipe extending from the outlet 165.
[0178] A method of using a spray gun kit as described above will now be described.
[0179] The process comprises the following steps:
[0180] - supply of a kit 16, 116 for a spray gun as described above,
[0181] - supply of a spray gun 10 comprising a main body 12 defining an open chamber 62 and a cup 14 defining a reservoir 15,
[0182] - Fixing of the sleeve 64, 164 on 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
[0183] - Connection of the connecting end 82 to the cup 14, so as to fluidly connect the internal volume 70 of the jacket 64, 164 to the reservoir 15 of the cup 14.
[0184] During the step of attaching the liner to the main body, the proximal end of the liner 64, 164 is here inserted into the open chamber 62. More specifically, the jacket 64, 164 is screwed into the opening of the chamber 62.
[0185] 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 internal circumferential surface 74.
[0186] The installation of the kit on the gun is particularly easy.
[0187] In an alternative embodiment not shown, the spray gun is provided so that the pressure kit is connected to another location of the gun.
[0188] The chamber of the pressurized fluid passage duct is, for example, closed directly by the needle fitted into the chamber, for example using a sleeve.
[0189] The kit is, for example, intended to be fixed around the needle 44 of the inlet port 32 for pressurized fluid.
[0190] The kit can be designed to be attached to the connection of the inlet port 32.
[0191] Alternatively, the kit is intended to be fixed around the cavity 30 of the actuator duct 42.
[0192] Such a kit therefore makes it possible to easily adapt the spray gun to provide for a sample of pressurized fluid in the direction of the bucket reservoir if necessary.
[0193] Indeed, if no sampling is necessary, the kit is able to be withdrawn, the chamber of the pressurized fluid passage duct being adapted to be closed directly by the needle 78, for example, by fitting the needle in the chamber, in particular. using a sleeve.
[0194] Alternatively, if no sampling is necessary, the regulator 84 is adjusted so that the passage area of a circumference in the fitting 66 is zero.
[0195] If a sample is required in order to pressurize the fluid in the reservoir 15, the kit is easily placed on the gun at the desired location.
[0196] The fitting then makes it possible to recover the pressure, advantageously in a selective manner, of the pressurized fluid at a location of the spray gun to pressurize the fluid included in the reservoir of a cup.
[0197] The pressure gun with the kit is also easily handled by a user.

权利要求:
Claims (12)
[0001]
Kit (16, 116) for spray gun (10) comprising: - a jacket (64, 164) delimiting an internal volume (70), the internal volume (70) being intended to contain a pressurized fluid, the jacket (64, 164) being configured to be connected to a main body (12) a spray gun (10), the sleeve (64, 164) having a radial periphery (72), the jacket (64, 164) being provided with at least one orifice (76), the or each orifice (76) opening onto the radial periphery (72) and fluidly connecting the internal volume (70) and the radial periphery (72) , the radial periphery (72) defining a fluid outlet of the jacket (64, 164), - a connector (66) having a sampling end (80) and a connection end (82), the sampling end (80) being connected to the fluid outlet of the jacket (64, 164), the end connection (82) being adapted to be connected to a cup (14) so as to fluidly connect the cup (14) to the internal volume (70) of the jacket (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 sampling end (80) of the connector ( 66).
[0002]
A spray gun kit according to claim 1, wherein the or each orifice (76) passes through the liner (64, 164) along a respective axis, the respective axis of the or each orifice (76) forming with the axis of main extension of the jacket (64, 164) at an angle of between 30 ° and 90 °, more particularly between 45 ° and 75 °.
[0003]
A spray gun kit according to claim 1 or 2, comprising a regulator (84, 184) adapted to control the pressure or flow of fluid passing through the sampling end (80).
[0004]
Spray gun kit 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) opening into the recess (73).
[0005]
A spray gun kit according to claim 4, wherein the recess (73) is at least partially cut into the jacket (64, 164), the recess (73) forming the fluid outlet of the jacket (64, 164) .
[0006]
Spray gun kit 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).
[0007]
A method of using a spray gun kit (16, 116) according to any one of claims 1 to 6, comprising the following steps: - supply of a kit (16, 116) for a spray gun according to any one of claims 1 to 6, - supply of a spray gun (10) comprising a main body (12) defining an open chamber (62) and a cup (14) defining a reservoir (15), - fixing the liner (64, 164) on the main body (12) so that the open chamber (62) and the internal volume (70) of the liner (64, 164) together define a single volume, and - Connection of the connection end (82) to the cup (14), so as to fluidly connect the internal volume (70) of the jacket (64, 164) to the reservoir (15) of the cup (14).
[0008]
A spray gun (10) comprising a main body (12), a cup (14) and a spray gun kit (16, 116) according to any one of claims 1 to 6, wherein the jacket (64, 164) is connected to an open chamber (62) of the main body (12), such that the open chamber (62) and the internal volume (70) of the liner (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 internal volume (70) of the jacket (64, 164) being fluidly connected to the reservoir (15) of the cup (14) via the connector (66).
[0009]
A spray gun according to claim 8, comprising a needle (78, 178) extending partially into the open chamber (62), the jacket (64, 164) surrounding the needle (78, 178), the internal volume (70) of the liner (64, 164) being defined between the needle (78, 178) and the liner (64, 164).
[0010]
A spray gun according to claim 8 or 9, wherein the open chamber (62) is fluidly connected to a pressurized fluid inlet (32).
[0011]
Spray gun according to any one of claims 8 to 10, in which the ring (68, 168) has at least one indexing element, the main body (12) having at least one complementary indexing element intended to cooperate with the at least one indexing element for locking the ring (68, 168) in at least one given position relative to the main body (12).
[0012]
A spray gun according to claim 11, wherein the ring (68, 168) is free to rotate about a main axis about the sleeve (64, 164), the given position of the ring (68, 168) corresponding to a angular position of the ring (68, 168) around the main axis.

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同族专利:

公开号 | 公开日

US20210162438A1|2021-06-03|

FR3103716B1|2021-12-10|

CN112871493A|2021-06-01|

KR20210067921A|2021-06-08|

EP3827902A1|2021-06-02|

JP2021084107A|2021-06-03|

引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

US3090530A|1960-06-27|1963-05-21|Vilbiss Co|Air flow control for pressure feed containers|

WO2016180863A1|2015-05-12|2016-11-17|Basf Coatings Gmbh|Safety and control device for pressurized containers, and pressurized container having such a safety and control device|

EP3517215A1|2018-01-26|2019-07-31|Graco Minnesota Inc.|Handheld texture spray gun with hopper|WO2021191791A1|2020-03-27|2021-09-30|3M Innovative Properties Company|Spray gun converter|

法律状态:
2020-11-30| PLFP| Fee payment|Year of fee payment: 2 |

2021-06-04| PLSC| Publication of the preliminary search report|Effective date: 20210604 |

2021-06-04| EXTE| Extension to a french territory|Extension state: PF |

2021-11-30| PLFP| Fee payment|Year of fee payment: 3 |

优先权:

申请号 | 申请日 | 专利标题

FR1913481A|FR3103716B1|2019-11-29|2019-11-29|Spray gun kit, method of use and associated gun|

FR1913481|2019-11-29|FR1913481A| FR3103716B1|2019-11-29|2019-11-29|Spray gun kit, method of use and associated gun|

JP2020196039A| JP2021084107A|2019-11-29|2020-11-26|Spray gun kit, method of using the same, and gun|

CN202011347844.5A| CN112871493A|2019-11-29|2020-11-26|Spray gun kit, related method of use and gun|

KR1020200161857A| KR20210067921A|2019-11-29|2020-11-27|Spray gun kit, associated method of use and gun|

EP20210226.5A| EP3827902A1|2019-11-29|2020-11-27|Kit for a spray gun, method of use and associated gun|

US17/105,981| US20210162438A1|2019-11-29|2020-11-27|Spray gun kit, associated method of use and gun|

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