EP3256260A1 - Fluid spray gun, filter for such a gun, and method for extracting a filter out of such a gun - Google Patents

Fluid spray gun, filter for such a gun, and method for extracting a filter out of such a gun

Info

Publication number
EP3256260A1
EP3256260A1 EP16705081.4A EP16705081A EP3256260A1 EP 3256260 A1 EP3256260 A1 EP 3256260A1 EP 16705081 A EP16705081 A EP 16705081A EP 3256260 A1 EP3256260 A1 EP 3256260A1
Authority
EP
European Patent Office
Prior art keywords
filter
guard
handle
gun
barrel
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.)
Granted
Application number
EP16705081.4A
Other languages
German (de)
French (fr)
Other versions
EP3256260B8 (en
EP3256260B1 (en
Inventor
Fabrice JOAQUIM
Nicolas BAILLETTE
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Exel Industries SA filed Critical Exel Industries SA
Publication of EP3256260A1 publication Critical patent/EP3256260A1/en
Application granted granted Critical
Publication of EP3256260B1 publication Critical patent/EP3256260B1/en
Publication of EP3256260B8 publication Critical patent/EP3256260B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/01—Spray pistols, discharge devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/14—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts
    • B05B15/16—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts for preventing non-intended contact between spray heads or nozzles and foreign bodies, e.g. nozzle guards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/40—Filters located upstream of the spraying outlets
    • 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
    • B05B9/007—At least a part of the apparatus, e.g. a container, being provided with means, e.g. wheels, for allowing its displacement relative to the ground

Definitions

  • the present invention relates to a spray gun of a fluid, comprising a body composed of a barrel supporting a nozzle for projecting fluid and a handle having a receiving cavity of a filter, open opposite the barrel , and a guard adapted to protect the hand of a user against impacts and prevent unintended operation in case of a fall, the guard being removably mounted on the body and having a first end fixed to the barrel and a second end attached to the handle.
  • the guard is mounted fixedly on the body.
  • the devices for projecting a fluid frequently include a gun, allowing easy handling by the user.
  • the gun is, in general, powered by a supply pipe connected to the lower end of the handle.
  • the handle is hollow to allow the passage of the fluid.
  • the fluid then passes through the handle and the barrel before reaching a nozzle for uniform projection of the fluid on a surface.
  • Such guns are, for example, used for the projection of a fluid for coating surfaces, such as paint.
  • these guns In order to prevent the gun or the nozzle which it carries from being clogged, these guns generally comprise a filter making it possible to retain the impurities present in the fluid upstream of the nozzle.
  • No. 5,370,314 A discloses a pistol of this type, comprising a filter received in a cavity of the handle.
  • This pistol further includes a guard for protecting the hand of the user against possible shocks and to prevent unintended operation in case of a fall.
  • This guard has two ends, one being fixed to the barrel and the other to the handle.
  • the guard further comprises a polygonal impression complementary to the handle, making it possible to unscrew it from the barrel. Such a gun thus allows to disassemble the handle of the barrel without the aid of any additional tool.
  • the object of the invention is to propose a spray gun of a fluid allowing easy extraction of the filter out of the handle.
  • the subject of the invention is a spray gun for a fluid of the aforementioned type, in which the guard comprises means for extracting the filter from the cavity.
  • the gun comprises one or more of the following characteristics, taken individually or in any technically possible combination:
  • the filter is movable in translation relative to the handle and is removable from the cavity, in a longitudinal direction of the handle away from the barrel, and the extraction means are adapted to fix in translation the filter and the guard according to this direction;
  • the filter has a groove and the guard extraction means have a notch whose edge is configured to be engaged in the groove;
  • the guard is monoblock
  • the first end has two resilient arms whose free ends are configured to be engaged in two corresponding housings provided on the barrel;
  • the gun further comprises a holding element adapted to be fixed to the handle in a first position in which the holding element prevents the extraction of the filter from the cavity, and the guard also comprises means for operating the holding member relative to the handle.
  • the holding member is adapted to be screwed to the handle and the operating means are adapted to screw or unscrew the holding member relative to the handle.
  • the holding member has a polygonal outer shape and the operating means have a complementary shape of the shape of the outer shape of the holding member.
  • the barrel carries a seat-holder adapted to support a seat of a fluid spray nozzle, the seat-carrier being screwed to the barrel and the guard comprising, in addition, means for unscrewing the seat-carrier relative to at the barrel, while the gun further comprises a trigger pivoting about an axis passing through the body, and the guard comprises disassembly means of the axis relative to the body.
  • the invention also relates to a fluid spray gun filter, the filter having a first upward end of the handle and a second end facing downwardly of the handle when the filter is received in the cavity, in which the second end comprises complementary means of the extraction means provided on guard.
  • the first end has a cylindrical inlet opening of the fluid, the cylindrical opening being polygonal in base.
  • the invention also relates to a method of extracting a filter from the handle of a fluid spray gun, the gun comprising a body consisting of a barrel supporting a fluid spray nozzle and a nozzle. handle having a receiving cavity of a filter open opposite the barrel, and a guard adapted to protect against the impact of a user's hand and to prevent unintended operation in case of a fall, the guard having a first end fixed to the barrel and a second end attached to the handle, the method comprising the steps of:
  • FIG. 1 is a perspective view of a gun according to the invention, comprising a guard, a handle delimiting a receiving cavity of a filter, and a filter holding element in the cavity;
  • FIG. 2 is an exploded perspective view of the pistol of FIG. 1,
  • FIG. 3 is a perspective view of the guard of the pistol of FIGS. 1 and 2, including means for extracting a filter from a cavity and means for operating a holding element relative to the handle,
  • FIG. 4 is a detail of the pistol of FIG. 1, in which the holding element has been unscrewed from the handle,
  • FIG. 5 is a detail of the pistol of FIG. 1, in which the extraction means have been fixed in translation with the filter, and the filter is partially extracted from the cavity;
  • FIG. 6 is a perspective view of a second example of a pistol according to the invention.
  • FIG. 7 is a flowchart of the steps of a method for extracting a filter from the handle of a pistol according to the invention.
  • a gun 10 for the projection of a fluid F is shown in FIG.
  • the gun 10 comprises a body 15, a trigger 20, an axis 25, a seat holder 30, a seat 35, a base 40, a nozzle 45, a guard 50, a filter 55 and a filter holding member 55 in relation to the body 15.
  • the base 40 and the nozzle 45 are not shown in FIG.
  • the base 40 and the nozzle 45 are shown in FIG.
  • the fluid F is, for example, a coating product.
  • the fluid F is a paint.
  • the body 15 is monoblock.
  • the body 15 is made of metal.
  • the body 15 is made of aluminum, preferably by stamping.
  • the body 15 may be made of a synthetic material, for example a polymeric material containing fibrous reinforcements.
  • the body 15 comprises a barrel 65 and a handle 70 defining a cavity 72 for receiving the filter 55. A part of the cavity 72 is visible by tearing in FIG.
  • the trigger 20 is able to actuate a control mechanism (not shown) of a flow rate of the fluid F.
  • the trigger 20 is movable relative to the body 15.
  • the trigger 20 is rotatable about the axis 25 in relation to the body 15.
  • the trigger 20 has two openings 73 for guiding the axis 25.
  • the axis 25 passes through the body 15 and the two guide openings 73.
  • the axis 25 has a polygonal head 75.
  • the head 75 is slotted.
  • the axis 25 carries, in addition, a screw 80 with a polygonal head.
  • the screw 80 is adapted to prevent the removal of the shaft 25 from the body 15 and the guide openings 73 when the screw 80 is screwed to the axis 25.
  • the axis 25 and the screw 70 are preferably made in a metal such as stainless steel.
  • the seat carrier 30 is adapted to receive the seat 35 in support.
  • the seat-holder 30 is screwed to the barrel 65.
  • the seat-holder has a first outer polygonal shape 82 and two holes 85 for passing the fluid F.
  • the first outer shape 82 is cylindrical with a polygonal base, for example hexagonal base.
  • the seat carrier 30 is preferably made of a metallic material.
  • the seat carrier 30 is made of stainless steel.
  • the seat 35 is adapted to guide the nozzle 45 in rotation relative to the body 15.
  • the seat 35 is preferably made of a metal such as steel.
  • the seat 35 carries a seat seal 90.
  • the base 40 has a first opening 95 for receiving the nozzle 45.
  • the base 40 is screwed to the barrel 65.
  • the base 40 is configured to press the nozzle 45 against the seat 35 and to press the seat 35 and the seal 90 against the seat carrier 30 when the base 40 is screwed to the barrel 65 and the nozzle 45 is received in the first receiving opening 95.
  • the guard 50 is able to protect the user's hand against shocks and to prevent unintended operation in the event of a fall.
  • the guard 50 is removably mounted on the body 15. In a variant, the guard 50 is fixedly mounted on the body 15.
  • the guard 50 is monobloc.
  • the guard 50 is made of a metallic material.
  • the guard 50 is, for example, made of stainless steel.
  • the guard 50 has a first end E1 attached to the barrel 65, and a second end E2 attached to the handle 70.
  • the first end E1 has two elastic arms 100, means 105 for unscrewing the seat carrier 30 with respect to the barrel 65, and means 10 for dismounting the shaft 25 relative to the body 15.
  • the second end E2 comprises means 15 for extracting the filter 55 from the cavity 72 and means 120 for operating the holding element 60.
  • the filter 55 is received in the cavity 72.
  • the filter 55 is movable in translation relative to the handle 70.
  • the filter 55 is substantially cylindrical, with a circular base, and extends along a first axis A1.
  • the filter 55 has an upwardly facing third end E3 of the handle 70 when the filter 55 is received in the cavity 72.
  • the filter 55 further has a downwardly facing fourth end E4 of the handle 70 when the filter 55 is received in the cavity 72.
  • the filter 55 is, for example, made of a plastic material.
  • the fourth end E4 comprises means 130 complementary extraction means 1 15.
  • the complementary means 130 have a cylindrical groove 132 delimited along the first axis A1 by a ring 133.
  • the fourth end E4 further has a cylindrical fluid inlet opening 135.
  • the holding member 60 is adapted to be attached to the handle 70 in a first position in which the holding member 60 prevents the extraction of the filter 55 out of the cavity 72.
  • the holding member 60 is adapted to be screwed to the handle 70.
  • the holding member 60 is movable relative to the handle 70 between the first position and a second position, in which the holding member 60 does not prevent extraction of the filter 55 from the cavity 72.
  • the holding member 60 has a second polygonal outer shape 137.
  • the holding member 60 has a cylindrical portion 138.
  • the cylindrical portion 138 has a first diameter D1.
  • the holding member 60 has a hole 140 for the passage of the fluid F.
  • the through hole 140 of the fluid F is, for example, cylindrical with a circular base.
  • the holding member 60 is made of a metallic material.
  • the holding member 60 is made of brass.
  • the barrel 65 is able to support the seat carrier 30, the base 40 and the nozzle 45.
  • the barrel 65 has a second opening 145 for receiving the seat carrier 30.
  • the second receiving opening 145 is, for example, threaded.
  • the barrel 65 extends substantially in a direction of sight V.
  • the barrel 65 has, in addition, two housings 150 for receiving the elastic arms 100.
  • the housings 150 are complementary to the elastic arms 100.
  • the housings 150 are substantially perpendicular to the direction of sight V.
  • the barrel 65 has, in addition, fastening means 155 of the base 40.
  • the fixing means 155 are, for example, made in the form of a thread on the outside of the barrel 65.
  • the handle 70 is adapted to allow the gripping of the gun 10 by a user.
  • the handle 70 extends substantially in a longitudinal direction D.
  • the receiving cavity 72 is preferably cylindrical.
  • the receiving cavity 72 has a second axis A2.
  • the second axis A2 is preferably coincident with the longitudinal direction D of the handle 70.
  • the cavity 72 is open opposite the barrel 65.
  • the first axis A1 coincides with the second axis A2.
  • the filter 55 is extractable from the cavity 72 by a translation movement in the longitudinal direction D of the handle 70, away from the barrel 65.
  • Each elastic arm 100 has a free end 160.
  • Each free end 160 is configured to be engaged in a corresponding housing 150 of the barrel 65.
  • the elastic arms 100 are integral with the guard 50.
  • the elastic arms 100 define the unscrewing means 105.
  • the unscrewing means 105 are able to unscrew the seat-holder 35 with respect to the barrel 65.
  • the means for unscrewing the seat carrier 30 are made in the form of a first cavity 105.
  • the first cavity 105 is polygonal and complementary to the first outer shape 82 of the seat carrier 30.
  • the disassembly means 1 10 are suitable for dismounting the axis 25 with respect to the body 15.
  • the disassembly means 1 10 are configured to unscrew the screw 80 with respect to the axis 25.
  • the dismounting means 1 10 are made in the form of a second polygonal imprint 1.
  • the second polygonal impression 1 10 is complementary to the head 75.
  • the second imprint 1 10 is complementary to the screw 80.
  • the extraction means 1 15 are able to join in translation the filter 55 and the guard 50 in the longitudinal direction D of the handle 70.
  • the extraction means 1 15 have a third cavity 172 and a notch 175 that opens into the cavity 172.
  • the operating means 120 are able to maneuver the holding member 60 relative to the handle 70.
  • the operating means 120 are adapted to screw or unscrew the holding member 60 relative to the handle 70.
  • the operating means 120 are made in the form of a fourth cavity 120.
  • the fourth cavity 120 is polygonal and complementary to the second external shape 137.
  • the fourth cavity 120 is hexagonal.
  • the fourth cavity 120 has a fifth diameter D5.
  • the fifth diameter D5 is defined as the minimum distance between two points carried by opposite sides of the fourth cavity 120.
  • the fifth diameter D5 is strictly greater than the first diameter D1.
  • the groove 132 is cylindrical, and has a second groove bottom diameter D2.
  • the groove 132 is disposed between the ring 133 and the third end E3 along the first axis A1.
  • the ring 133 is cylindrical about the first axis A1.
  • the ring 133 has a third diameter D3 strictly greater than the second diameter D2.
  • the cylindrical opening 135 is polygonal in base, preferably hexagonal base.
  • the axis of the cylindrical opening 135 is the first axis A1.
  • the second outer shape 137 is cylindrical, with a polygonal base.
  • the free ends 160 are configured to grip the barrel 65 in a plane perpendicular to the viewing direction V.
  • the free ends 160 are configured to be inserted into the housings 150 by a translation movement perpendicular to the viewing direction V , in the direction of arrow F1 in Figure 1.
  • the free ends 160 are extractable relative to the housings 150.
  • the free ends 160 are configured to be extracted from the housing 150 by a traction movement perpendicular to the direction of sight V.
  • the third cavity 172 is circular.
  • the third cavity 172 has a fourth diameter D4 strictly greater than the second diameter D2 and the third diameter D3.
  • the notch 175 is complementary to the groove 132. This means that the edge of the notch 175 is configured to be engaged in the groove 132.
  • the notch 175 has a first width L1 greater than or equal to the second diameter D2 and strictly lower than the third diameter D3.
  • the filter 55 When the filter 55 is received in the cavity 72, and the edge of the notch 175 is engaged in the groove 132, the filter 55 is integral in translation with the guard 50 in the longitudinal direction D of the handle 70.
  • the guard 50 When the gun 10 is assembled, the guard 50 is in an assembled position relative to the body 15. In the assembled position, the first end E1 of the guard 50 is fixed to the barrel 65. This means that the free ends 160 are received in housing 150.
  • the fourth recess 120 partially surrounds the cylindrical portion 138 of the holding member 60.
  • the holding member 60 is screwed to the handle 70 in the first position.
  • a first step 210 the free ends 160 are extracted from the housings 150 by pulling in the direction of the arrow F2 in Figure 1 in a direction perpendicular to the direction of sight V.
  • the first end E1 of the guard 50 is disengaged This is obtained by an elastic deformation of the guard 50.
  • a second step 220 the guard 50 is moved in the longitudinal direction D of the handle 70 to a maneuvering position in which the guard 50 and the holding member 60 are integral in rotation.
  • the guard 50 and the holding member 60 are thus integral in rotation about the longitudinal direction D.
  • the holding member 60 is unscrewed relative to the handle 70 by rotation of the guard 50 about the second axis A2. The holding member 60 is moved from the first position to the second position.
  • a fourth step 240 the guard 50 and the filter 55 are fixed in translation in the longitudinal direction D.
  • the fourth end E4 is inserted into the third cavity 172, then the edge of the notch 175 is engaged in the groove 133 by a translation movement in a direction perpendicular to the longitudinal direction D, in the direction of the arrow F3 in FIG.
  • a fifth step 250 the filter 55 is extracted from the cavity 72 by the application, by the user, of a tensile force T parallel to the longitudinal direction D and oriented away from the barrel 65.
  • the guard 50 thus makes it possible to easily extract the filter 55 from the cavity 72 without additional tools.
  • the guard 50 also makes it possible to easily dismount the seat carrier 30 and the shaft 25 without additional tools.
  • the polygonal cylindrical opening 135 allows a user to exert on the filter 55 a torsion torque around the longitudinal direction D.
  • the user exerts a torque through an Allen key complementary to the opening cylindrical 135. It is therefore possible for a user to unlock the filter 55 if it is stuck in the cavity 72 by dried paint. The user then extracts the filter 55 from the cavity 72 using the extraction means 1 15 of the guard 50.
  • the extraction means 1 15 are carried by the first end E1 and the disassembly means 1 10 are carried by the second end E2.
  • the operation of the second example is identical to the operation of the first example.

Landscapes

  • Nozzles (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Coating Apparatus (AREA)

Abstract

The present invention concerns a fluid spray gun (10), comprising a body (15) consisting of a barrel (65) supporting a fluid spray nozzle (30) and a handle (70) having a cavity (72) for receiving a filter (55), open opposite the barrel (65), and a guard (50) suitable for protecting the hand of a user against impacts, the guard (50) being removably mounted on the body (15) and having a first end (E1) secured to the barrel (65) and a second end (E2) secured to the handle (70). The guard (50) comprises extraction means (115) for extracting the filter (55) out of the cavity (72).

Description

Pistolet de projection d'un fluide, filtre pour un tel pistolet, et procédé d'extraction d'un filtre hors d'un tel pistolet  Spray gun for a fluid, filter for such a gun, and method of extracting a filter from such a gun
La présente invention concerne un pistolet de projection d'un fluide, comprenant un corps composé d'un canon supportant une buse de projection du fluide et d'une poignée présentant une cavité de réception d'un filtre, ouverte à l'opposé du canon, et une garde apte à protéger contre les chocs la main d'un utilisateur et à empêcher un fonctionnement involontaire en cas de chute, la garde étant montée de façon amovible sur le corps et présentant une première extrémité fixée au canon et une deuxième extrémité fixée à la poignée. En variante, la garde est montée de façon fixe sur le corps. The present invention relates to a spray gun of a fluid, comprising a body composed of a barrel supporting a nozzle for projecting fluid and a handle having a receiving cavity of a filter, open opposite the barrel , and a guard adapted to protect the hand of a user against impacts and prevent unintended operation in case of a fall, the guard being removably mounted on the body and having a first end fixed to the barrel and a second end attached to the handle. Alternatively, the guard is mounted fixedly on the body.
Les dispositifs de projection d'un fluide comportent fréquemment un pistolet, permettant une prise en main aisée par l'utilisateur. Afin de faciliter son maniement par un utilisateur le pistolet est, en général, alimenté par un tuyau d'alimentation relié à l'extrémité inférieure de la poignée. Dans cette configuration, la poignée est creuse afin de permettre le passage du fluide. En fonctionnement, le fluide traverse donc la poignée puis le canon avant d'atteindre une buse permettant une projection uniforme du fluide sur une surface.  The devices for projecting a fluid frequently include a gun, allowing easy handling by the user. To facilitate its handling by a user the gun is, in general, powered by a supply pipe connected to the lower end of the handle. In this configuration, the handle is hollow to allow the passage of the fluid. In operation, the fluid then passes through the handle and the barrel before reaching a nozzle for uniform projection of the fluid on a surface.
De tels pistolets sont, par exemple, utilisés pour la projection d'un fluide destiné à revêtir des surfaces, tel que de la peinture. Afin d'éviter que le pistolet ou la buse qu'il porte ne soient bouchés, ces pistolets comportent en général un filtre permettant de retenir en amont de la buse les impuretés présentes dans le fluide.  Such guns are, for example, used for the projection of a fluid for coating surfaces, such as paint. In order to prevent the gun or the nozzle which it carries from being clogged, these guns generally comprise a filter making it possible to retain the impurities present in the fluid upstream of the nozzle.
On connaît du document US 5 370 314 A un pistolet de ce type, comportant un filtre reçu dans une cavité de la poignée. Ce pistolet comporte, en outre, une garde destinée à protéger la main de l'utilisateur contre les chocs éventuels et à empêcher un fonctionnement involontaire en cas de chute. Cette garde présente deux extrémités, l'une étant fixée au canon et l'autre à la poignée. La garde comporte, en outre, une empreinte polygonale complémentaire de la poignée, permettant de dévisser celle-ci par rapport au canon. Un tel pistolet permet donc de démonter la poignée du canon sans l'aide d'aucun outil additionnel.  No. 5,370,314 A discloses a pistol of this type, comprising a filter received in a cavity of the handle. This pistol further includes a guard for protecting the hand of the user against possible shocks and to prevent unintended operation in case of a fall. This guard has two ends, one being fixed to the barrel and the other to the handle. The guard further comprises a polygonal impression complementary to the handle, making it possible to unscrew it from the barrel. Such a gun thus allows to disassemble the handle of the barrel without the aid of any additional tool.
Cependant, si un utilisateur laisse le pistolet inutilisé pendant plusieurs heures, il arrive que la peinture contenue dans le pistolet sèche et bloque le filtre à l'intérieur de la poignée. Il est alors nécessaire, pour extraire le filtre de la poignée, d'exercer sur le filtre une force de traction importante. Pour cela, l'utilisateur doit fréquemment utiliser un outil additionnel tel qu'une pince pour saisir une extrémité du filtre dépassant hors de la poignée. L'objectif de l'invention est de proposer un pistolet de projection d'un fluide permettant une extraction aisée du filtre hors de la poignée. However, if a user leaves the gun unused for several hours, the paint in the gun may dry out and block the filter inside the handle. It is then necessary, to extract the filter from the handle, to exert on the filter a large traction force. For this, the user must frequently use an additional tool such as a gripper to grasp one end of the filter protruding out of the handle. The object of the invention is to propose a spray gun of a fluid allowing easy extraction of the filter out of the handle.
A cet effet, l'invention a pour objet un pistolet de projection d'un fluide du type précité, dans lequel la garde comprend des moyens d'extraction du filtre hors de la cavité. Suivant d'autres aspects avantageux de l'invention, le pistolet comprend une ou plusieurs des caractéristiques suivantes, prise(s) isolément ou selon toutes les combinaisons techniquement possibles :  For this purpose, the subject of the invention is a spray gun for a fluid of the aforementioned type, in which the guard comprises means for extracting the filter from the cavity. According to other advantageous aspects of the invention, the gun comprises one or more of the following characteristics, taken individually or in any technically possible combination:
- le filtre est mobile en translation par rapport à la poignée et est extractible de la cavité, selon une direction longitudinale de la poignée s'éloignant du canon, et les moyens d'extraction sont aptes à solidariser en translation le filtre et la garde selon cette direction ;  - The filter is movable in translation relative to the handle and is removable from the cavity, in a longitudinal direction of the handle away from the barrel, and the extraction means are adapted to fix in translation the filter and the guard according to this direction;
- le filtre présente une gorge et les moyens d'extraction de la garde présentent une encoche dont le bord est configuré pour être engagé dans la gorge ;  - The filter has a groove and the guard extraction means have a notch whose edge is configured to be engaged in the groove;
- la garde est monobloc ;  - the guard is monoblock;
- la première extrémité présente deux bras élastiques dont les extrémités libres sont configurées pour être engagées dans deux logements correspondants prévus sur le canon ;  the first end has two resilient arms whose free ends are configured to be engaged in two corresponding housings provided on the barrel;
-le pistolet comprend, en outre, un élément de maintien propre à être fixé à la poignée dans une première position dans laquelle l'élément de maintien empêche l'extraction du filtre hors de la cavité, et la garde comporte, en outre, des moyens de manœuvre de l'élément de maintien par rapport à la poignée.  the gun further comprises a holding element adapted to be fixed to the handle in a first position in which the holding element prevents the extraction of the filter from the cavity, and the guard also comprises means for operating the holding member relative to the handle.
- l'élément de maintien est propre à être vissé à la poignée et les moyens de manœuvre sont propres à visser ou à dévisser l'élément de maintien par rapport à la poignée.  - The holding member is adapted to be screwed to the handle and the operating means are adapted to screw or unscrew the holding member relative to the handle.
- l'élément de maintien présente une forme extérieure polygonale et les moyens de manœuvre présentent une empreinte de forme complémentaire de la forme extérieure de l'élément de maintien.  - The holding member has a polygonal outer shape and the operating means have a complementary shape of the shape of the outer shape of the holding member.
- le canon porte un porte-siège propre à recevoir en appui un siège d'une buse de projection de fluide, le porte-siège étant vissé au canon et la garde comportant, en outre, des moyens de dévissage du porte-siège par rapport au canon, alors que le pistolet comporte, en outre, une gâchette pivotant autour d'un axe traversant le corps, et la garde comporte des moyens de démontage de l'axe par rapport au corps.  the barrel carries a seat-holder adapted to support a seat of a fluid spray nozzle, the seat-carrier being screwed to the barrel and the guard comprising, in addition, means for unscrewing the seat-carrier relative to at the barrel, while the gun further comprises a trigger pivoting about an axis passing through the body, and the guard comprises disassembly means of the axis relative to the body.
L'invention a également pour objet un filtre pour pistolet de projection de fluide, le filtre présentant une première extrémité orientée vers le haut de la poignée et une deuxième extrémité orientée vers le bas de la poignée lorsque le filtre est reçu dans la cavité, dans lequel la deuxième extrémité comprend des moyens complémentaires des moyens d'extraction prévus sur la garde. Suivant un autre aspect avantageux de l'invention, la première extrémité présente une ouverture cylindrique d'arrivée du fluide, l'ouverture cylindrique étant à base polygonale. The invention also relates to a fluid spray gun filter, the filter having a first upward end of the handle and a second end facing downwardly of the handle when the filter is received in the cavity, in which the second end comprises complementary means of the extraction means provided on guard. According to another advantageous aspect of the invention, the first end has a cylindrical inlet opening of the fluid, the cylindrical opening being polygonal in base.
L'invention a également pour objet un procédé d'extraction d'un filtre hors de la poignée d'un pistolet de projection de fluide, le pistolet comprenant un corps composé d'un canon supportant une buse de projection du fluide et d'une poignée présentant une cavité de réception d'un filtre ouverte à l'opposé du canon, et une garde apte à protéger contre les chocs la main d'un utilisateur et à empêcher un fonctionnement involontaire en cas de chute, la garde présentant une première extrémité fixée au canon et une deuxième extrémité fixée à la poignée, le procédé comprenant les étapes de :  The invention also relates to a method of extracting a filter from the handle of a fluid spray gun, the gun comprising a body consisting of a barrel supporting a fluid spray nozzle and a nozzle. handle having a receiving cavity of a filter open opposite the barrel, and a guard adapted to protect against the impact of a user's hand and to prevent unintended operation in case of a fall, the guard having a first end fixed to the barrel and a second end attached to the handle, the method comprising the steps of:
- désolidarisation de la première extrémité et du canon,  - separation of the first end and the barrel,
- solidarisation en translation de la garde et du filtre, et  - Securing in translation of the guard and the filter, and
- extraction du filtre hors de la cavité au moyen de la garde.  - extraction of the filter out of the cavity by means of the guard.
Les caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple non limitatif, et faite en référence aux dessins annexés, sur lesquels :  The features and advantages of the invention will become apparent on reading the description which follows, given solely by way of nonlimiting example, and with reference to the appended drawings, in which:
- la figure 1 est une vue en perspective d'un pistolet selon l'invention, comportant une garde, une poignée délimitant une cavité de réception d'un filtre, et un élément de maintien du filtre dans la cavité,  FIG. 1 is a perspective view of a gun according to the invention, comprising a guard, a handle delimiting a receiving cavity of a filter, and a filter holding element in the cavity;
- la figure 2 est une vue en perspective éclatée du pistolet de la figure 1 ,  FIG. 2 is an exploded perspective view of the pistol of FIG. 1,
- la figure 3 est une vue en perspective de la garde du pistolet des figures 1 et 2, comportant des moyens d'extraction d'un filtre hors d'une cavité et des moyens de manœuvre d'un élément de maintien par rapport à la poignée,  FIG. 3 is a perspective view of the guard of the pistol of FIGS. 1 and 2, including means for extracting a filter from a cavity and means for operating a holding element relative to the handle,
- la figure 4 est un détail du pistolet de la figure 1 , dans lequel l'élément de maintien a été dévissé de la poignée,  FIG. 4 is a detail of the pistol of FIG. 1, in which the holding element has been unscrewed from the handle,
- la figure 5 est un détail du pistolet de la figure 1 , dans lequel les moyens d'extraction ont été solidarisés en translation avec le filtre, et le filtre est partiellement extrait de la cavité,  FIG. 5 is a detail of the pistol of FIG. 1, in which the extraction means have been fixed in translation with the filter, and the filter is partially extracted from the cavity;
- la figure 6 est une vue en perspective d'un deuxième exemple de pistolet selon l'invention, et  FIG. 6 is a perspective view of a second example of a pistol according to the invention, and
- la figure 7 est un organigramme des étapes d'un procédé d'extraction d'un filtre de la poignée d'un pistolet selon l'invention.  FIG. 7 is a flowchart of the steps of a method for extracting a filter from the handle of a pistol according to the invention.
Un pistolet 10 pour la projection d'un fluide F est représenté sur la figure 1 . Le pistolet 10 comprend un corps 15, une gâchette 20, un axe 25, un porte-siège 30, un siège 35, une embase 40, une buse 45, une garde 50, un filtre 55 et un élément 60 de maintien du filtre 55 par rapport au corps 15. Pour la simplicité du dessin, l'embase 40 et la buse 45 ne sont pas représentés sur la figure 1 . L'embase 40 et la buse 45 sont représentées sur la figure 2. A gun 10 for the projection of a fluid F is shown in FIG. The gun 10 comprises a body 15, a trigger 20, an axis 25, a seat holder 30, a seat 35, a base 40, a nozzle 45, a guard 50, a filter 55 and a filter holding member 55 in relation to the body 15. For simplicity of the drawing, the base 40 and the nozzle 45 are not shown in FIG. The base 40 and the nozzle 45 are shown in FIG.
Le fluide F est, par exemple, un produit de revêtement. De préférence, le fluide F est une peinture.  The fluid F is, for example, a coating product. Preferably, the fluid F is a paint.
Le corps 15 est monobloc. Le corps 15 est réalisé en métal. Par exemple, le corps 15 est réalisé en aluminium, de préférence par matriçage. En variante, le corps 15 peut être réalisé en un matériau synthétique, par exemple en un matériau polymère contenant des renforts fibreux. Le corps 15 comprend un canon 65 et une poignée 70 délimitant une cavité 72 de réception du filtre 55. Une partie de la cavité 72 est visible par arrachement sur la figure 2.  The body 15 is monoblock. The body 15 is made of metal. For example, the body 15 is made of aluminum, preferably by stamping. Alternatively, the body 15 may be made of a synthetic material, for example a polymeric material containing fibrous reinforcements. The body 15 comprises a barrel 65 and a handle 70 defining a cavity 72 for receiving the filter 55. A part of the cavity 72 is visible by tearing in FIG.
La gâchette 20 est propre à actionner un mécanisme de contrôle (non représenté) d'un débit du fluide F. La gâchette 20 est mobile par rapport au corps 15. Par exemple, la gâchette 20 est mobile en rotation autour de l'axe 25 par rapport au corps 15.  The trigger 20 is able to actuate a control mechanism (not shown) of a flow rate of the fluid F. The trigger 20 is movable relative to the body 15. For example, the trigger 20 is rotatable about the axis 25 in relation to the body 15.
La gâchette 20 présente deux ouvertures 73 de guidage de l'axe 25.  The trigger 20 has two openings 73 for guiding the axis 25.
L'axe 25 traverse le corps 15 et les deux ouvertures de guidage 73.  The axis 25 passes through the body 15 and the two guide openings 73.
L'axe 25 présente une tête 75 polygonale. De préférence, la tête 75 est fendue. L'axe 25 porte, en outre, une vis 80 à tête polygonale. La vis 80 est propre à empêcher le retrait de l'axe 25 hors du corps 15 et des ouvertures de guidage 73 lorsque la vis 80 est vissée à l'axe 25. L'axe 25 et la vis 70 sont, de préférence, réalisés en un métal tel que l'acier inoxydable.  The axis 25 has a polygonal head 75. Preferably, the head 75 is slotted. The axis 25 carries, in addition, a screw 80 with a polygonal head. The screw 80 is adapted to prevent the removal of the shaft 25 from the body 15 and the guide openings 73 when the screw 80 is screwed to the axis 25. The axis 25 and the screw 70 are preferably made in a metal such as stainless steel.
Le porte-siège 30 est propre à recevoir en appui le siège 35.  The seat carrier 30 is adapted to receive the seat 35 in support.
Le porte-siège 30 est vissé au canon 65. Le porte-siège présente une première forme extérieure 82 polygonale et deux trous 85 de passage du fluide F.  The seat-holder 30 is screwed to the barrel 65. The seat-holder has a first outer polygonal shape 82 and two holes 85 for passing the fluid F.
La première forme extérieure 82 est cylindrique à base polygonale, par exemple à base hexagonale.  The first outer shape 82 is cylindrical with a polygonal base, for example hexagonal base.
Le porte-siège 30 est, de préférence, réalisé en un matériau métallique. Par exemple, le porte-siège 30 est réalisé en acier inoxydable.  The seat carrier 30 is preferably made of a metallic material. For example, the seat carrier 30 is made of stainless steel.
Le siège 35 est propre à guider en rotation la buse 45 par rapport au corps 15. Le siège 35 est, de préférence, réalisé en un métal tel que l'acier. Le siège 35 porte un joint de siège 90.  The seat 35 is adapted to guide the nozzle 45 in rotation relative to the body 15. The seat 35 is preferably made of a metal such as steel. The seat 35 carries a seat seal 90.
L'embase 40 présente une première ouverture 95 de réception de la buse 45. L'embase 40 est vissée au canon 65. L'embase 40 est configurée pour plaquer la buse 45 contre le siège 35 et pour plaquer le siège 35 et le joint 90 contre le porte-siège 30 lorsque l'embase 40 est vissée au canon 65 et que la buse 45 est reçue dans la première ouverture de réception 95. La garde 50 est propre à protéger contre les chocs la main d'un utilisateur et à empêcher un fonctionnement involontaire en cas de chute. La garde 50 est montée de façon amovible sur le corps 15. En variante, la garde 50 est montée de façon fixe sur le corps 15. The base 40 has a first opening 95 for receiving the nozzle 45. The base 40 is screwed to the barrel 65. The base 40 is configured to press the nozzle 45 against the seat 35 and to press the seat 35 and the seal 90 against the seat carrier 30 when the base 40 is screwed to the barrel 65 and the nozzle 45 is received in the first receiving opening 95. The guard 50 is able to protect the user's hand against shocks and to prevent unintended operation in the event of a fall. The guard 50 is removably mounted on the body 15. In a variant, the guard 50 is fixedly mounted on the body 15.
La garde 50 est monobloc. La garde 50 est réalisée en un matériau métallique. La garde 50 est, par exemple, réalisée en acier inoxydable.  The guard 50 is monobloc. The guard 50 is made of a metallic material. The guard 50 is, for example, made of stainless steel.
La garde 50 présente une première extrémité E1 fixée au canon 65, et une deuxième extrémité E2 fixée à la poignée 70.  The guard 50 has a first end E1 attached to the barrel 65, and a second end E2 attached to the handle 70.
Selon l'exemple de la figure 1 , la première extrémité E1 présente deux bras élastiques 100, des moyens 105 de dévissage du porte-siège 30 par rapport au canon 65, et des moyens 1 10 de démontage de l'axe 25 par rapport au corps 15.  According to the example of FIG. 1, the first end E1 has two elastic arms 100, means 105 for unscrewing the seat carrier 30 with respect to the barrel 65, and means 10 for dismounting the shaft 25 relative to the body 15.
La deuxième extrémité E2 comprend des moyens 1 15 d'extraction du filtre 55 hors de la cavité 72 et des moyens 120 de manœuvre de l'élément de maintien 60.  The second end E2 comprises means 15 for extracting the filter 55 from the cavity 72 and means 120 for operating the holding element 60.
Le filtre 55 est reçu dans la cavité 72. Le filtre 55 est mobile en translation par rapport à la poignée 70.  The filter 55 is received in the cavity 72. The filter 55 is movable in translation relative to the handle 70.
Le filtre 55 est sensiblement cylindrique, à base circulaire, et s'étend selon un premier axe A1 .  The filter 55 is substantially cylindrical, with a circular base, and extends along a first axis A1.
Le filtre 55 présente une troisième extrémité E3 orienté vers le haut de la poignée 70 lorsque le filtre 55 est reçu dans la cavité 72. Le filtre 55 présente, en outre, une quatrième extrémité E4 orientée vers le bas de la poignée 70 lorsque le filtre 55 est reçu dans la cavité 72.  The filter 55 has an upwardly facing third end E3 of the handle 70 when the filter 55 is received in the cavity 72. The filter 55 further has a downwardly facing fourth end E4 of the handle 70 when the filter 55 is received in the cavity 72.
Le filtre 55 est, par exemple, réalisé en un matériau plastique.  The filter 55 is, for example, made of a plastic material.
La quatrième extrémité E4 comprend des moyens 130 complémentaires des moyens d'extraction 1 15. Selon l'exemple de la figure 4, les moyens complémentaires 130 présentent une gorge cylindrique 132 délimitée selon le premier axe A1 par une couronne 133.  The fourth end E4 comprises means 130 complementary extraction means 1 15. In the example of Figure 4, the complementary means 130 have a cylindrical groove 132 delimited along the first axis A1 by a ring 133.
La quatrième extrémité E4 présente, en outre, une ouverture cylindrique 135 d'arrivée du fluide F. L'élément de maintien 60 est propre à être fixé à la poignée 70 dans une première position dans laquelle l'élément de maintien 60 empêche l'extraction du filtre 55 hors de la cavité 72. Par exemple, l'élément de maintien 60 est propre à être vissé à la poignée 70.  The fourth end E4 further has a cylindrical fluid inlet opening 135. The holding member 60 is adapted to be attached to the handle 70 in a first position in which the holding member 60 prevents the extraction of the filter 55 out of the cavity 72. For example, the holding member 60 is adapted to be screwed to the handle 70.
L'élément de maintien 60 est mobile par rapport à la poignée 70 entre la première position et une deuxième position, dans laquelle l'élément de maintien 60 n'empêche pas l'extraction du filtre 55 hors de la cavité 72. L'élément de maintien 60 présente une deuxième forme extérieure 137 polygonale. En variante ou en complément, l'élément de maintien 60 présente une portion cylindrique 138. La portion cylindrique 138 présente un premier diamètre D1 . The holding member 60 is movable relative to the handle 70 between the first position and a second position, in which the holding member 60 does not prevent extraction of the filter 55 from the cavity 72. The holding member 60 has a second polygonal outer shape 137. Alternatively or additionally, the holding member 60 has a cylindrical portion 138. The cylindrical portion 138 has a first diameter D1.
L'élément de maintien 60 présente un trou 140 de passage du fluide F. Le trou de passage 140 du fluide F est, par exemple, cylindrique à base circulaire.  The holding member 60 has a hole 140 for the passage of the fluid F. The through hole 140 of the fluid F is, for example, cylindrical with a circular base.
L'élément de maintien 60 est réalisé en un matériau métallique. Par exemple, l'élément de maintien 60 est réalisé en laiton.  The holding member 60 is made of a metallic material. For example, the holding member 60 is made of brass.
Le canon 65 est propre à supporter le porte-siège 30, l'embase 40 et la buse 45. The barrel 65 is able to support the seat carrier 30, the base 40 and the nozzle 45.
Le canon 65 présente une deuxième ouverture 145 de réception du porte- siège 30. La deuxième ouverture de réception 145 est, par exemple, taraudée. The barrel 65 has a second opening 145 for receiving the seat carrier 30. The second receiving opening 145 is, for example, threaded.
Le canon 65 s'étend sensiblement selon une direction de visée V.  The barrel 65 extends substantially in a direction of sight V.
Le canon 65 présente, en outre, deux logements 150 de réception des bras élastiques 100. Les logements 150 sont complémentaires des bras élastiques 100. Par exemple, les logements 150 sont sensiblement perpendiculaires à la direction de visée V.  The barrel 65 has, in addition, two housings 150 for receiving the elastic arms 100. The housings 150 are complementary to the elastic arms 100. For example, the housings 150 are substantially perpendicular to the direction of sight V.
Le canon 65 présente, en outre, des moyens de fixation 155 de l'embase 40. Les moyens de fixation 155 sont, par exemple, réalisés en forme d'un filetage sur l'extérieur du canon 65.  The barrel 65 has, in addition, fastening means 155 of the base 40. The fixing means 155 are, for example, made in the form of a thread on the outside of the barrel 65.
La poignée 70 est propre à permettre la préhension du pistolet 10 par un utilisateur. La poignée 70 s'étend sensiblement selon une direction longitudinale D.  The handle 70 is adapted to allow the gripping of the gun 10 by a user. The handle 70 extends substantially in a longitudinal direction D.
La cavité de réception 72 est, de préférence, cylindrique. La cavité de réception 72 présente un deuxième axe A2. Le deuxième axe A2 est, de préférence, confondu avec la direction longitudinale D de la poignée 70.  The receiving cavity 72 is preferably cylindrical. The receiving cavity 72 has a second axis A2. The second axis A2 is preferably coincident with the longitudinal direction D of the handle 70.
La cavité 72 est ouverte à l'opposé du canon 65.  The cavity 72 is open opposite the barrel 65.
Lorsque le filtre 55 est reçu dans la cavité 72, le premier axe A1 est confondu avec le deuxième axe A2.  When the filter 55 is received in the cavity 72, the first axis A1 coincides with the second axis A2.
Le filtre 55 est extractible de la cavité 72 par un mouvement de translation selon la direction longitudinale D de la poignée 70, en s'éloignant du canon 65.  The filter 55 is extractable from the cavity 72 by a translation movement in the longitudinal direction D of the handle 70, away from the barrel 65.
Chaque bras élastique 100 présente une extrémité libre 160. Chaque extrémité libre 160 est configurée pour être engagé dans un logement 150 correspondant du canon 65.  Each elastic arm 100 has a free end 160. Each free end 160 is configured to be engaged in a corresponding housing 150 of the barrel 65.
Les bras élastiques 100 sont venus de matière avec la garde 50.  The elastic arms 100 are integral with the guard 50.
Les bras élastiques 100 délimitent les moyens de dévissage 105.  The elastic arms 100 define the unscrewing means 105.
Les moyens de dévissage 105 sont propres à dévisser le porte-siège 35 par rapport au canon 65. Les moyens de dévissage du porte-siège 30 sont réalisés en forme d'une première empreinte 105. La première empreinte 105 est polygonale et complémentaire de la première forme extérieure 82 du porte-siège 30. The unscrewing means 105 are able to unscrew the seat-holder 35 with respect to the barrel 65. The means for unscrewing the seat carrier 30 are made in the form of a first cavity 105. The first cavity 105 is polygonal and complementary to the first outer shape 82 of the seat carrier 30.
Les moyens de démontage 1 10 sont propres à démonter l'axe 25 par rapport au corps 15. Par exemple les moyens de démontage 1 10 sont configurés pour dévisser la vis 80 par rapport à l'axe 25.  The disassembly means 1 10 are suitable for dismounting the axis 25 with respect to the body 15. For example, the disassembly means 1 10 are configured to unscrew the screw 80 with respect to the axis 25.
Les moyens de démontage 1 10 sont réalisés en forme d'une deuxième empreinte 1 10 polygonale. La deuxième empreinte polygonale 1 10 est complémentaire de la tête 75. En variante ou en complément, la deuxième empreinte 1 10 est complémentaire de la vis 80.  The dismounting means 1 10 are made in the form of a second polygonal imprint 1. The second polygonal impression 1 10 is complementary to the head 75. Alternatively or in addition, the second imprint 1 10 is complementary to the screw 80.
Les moyens d'extraction 1 15 sont aptes à solidariser en translation le filtre 55 et la garde 50 selon la direction longitudinale D de la poignée 70.  The extraction means 1 15 are able to join in translation the filter 55 and the guard 50 in the longitudinal direction D of the handle 70.
Comme visible à la figure 3, les moyens d'extractions 1 15 présentent une troisième empreinte 172 et une encoche 175 qui débouche dans l'empreinte 172.  As can be seen in FIG. 3, the extraction means 1 15 have a third cavity 172 and a notch 175 that opens into the cavity 172.
Les moyens de manœuvre 120 sont propres à manœuvrer l'élément de maintien 60 par rapport à la poignée 70. En pratique, les moyens de manœuvre 120 sont propres à visser ou à dévisser l'élément de maintien 60 par rapport à la poignée 70.  The operating means 120 are able to maneuver the holding member 60 relative to the handle 70. In practice, the operating means 120 are adapted to screw or unscrew the holding member 60 relative to the handle 70.
Les moyens de manœuvre 120 sont réalisés en forme d'une quatrième empreinte 120. La quatrième empreinte 120 est polygonale et complémentaire de la deuxième forme extérieure 137.  The operating means 120 are made in the form of a fourth cavity 120. The fourth cavity 120 is polygonal and complementary to the second external shape 137.
Sur la figure 3, la quatrième empreinte 120 est hexagonale. La quatrième empreinte 120 présente un cinquième diamètre D5. Le cinquième diamètre D5 est défini comme étant la distance minimale entre deux points portés par des côtés opposés de la quatrième empreinte 120. Le cinquième diamètre D5 est strictement supérieur au premier diamètre D1 .  In Figure 3, the fourth cavity 120 is hexagonal. The fourth cavity 120 has a fifth diameter D5. The fifth diameter D5 is defined as the minimum distance between two points carried by opposite sides of the fourth cavity 120. The fifth diameter D5 is strictly greater than the first diameter D1.
La gorge 132 est cylindrique, et présente un deuxième diamètre D2 de fond de gorge.  The groove 132 is cylindrical, and has a second groove bottom diameter D2.
Lorsque le filtre 55 est reçu dans la cavité 72, la gorge 132 est disposée entre la couronne 133 et la troisième extrémité E3 le long du premier axe A1 .  When the filter 55 is received in the cavity 72, the groove 132 is disposed between the ring 133 and the third end E3 along the first axis A1.
La couronne 133 est cylindrique autour du premier axe A1 . La couronne 133 présente un troisième diamètre D3 strictement supérieur au deuxième diamètre D2.  The ring 133 is cylindrical about the first axis A1. The ring 133 has a third diameter D3 strictly greater than the second diameter D2.
L'ouverture cylindrique 135 est à base polygonale, de préférence à base hexagonale.  The cylindrical opening 135 is polygonal in base, preferably hexagonal base.
L'axe de l'ouverture cylindrique 135 est le premier axe A1 .  The axis of the cylindrical opening 135 is the first axis A1.
La deuxième forme extérieure 137 est cylindrique, à base polygonale. Les extrémités libres 160 sont configurées pour enserrer le canon 65 dans un plan perpendiculaire à la direction de visée V. Par exemple, les extrémités libres 160 sont configurées pour être insérées dans les logements 150 par un mouvement de translation perpendiculaire à la direction de visée V, dans le sens de la flèche F1 à la figure 1 . The second outer shape 137 is cylindrical, with a polygonal base. The free ends 160 are configured to grip the barrel 65 in a plane perpendicular to the viewing direction V. For example, the free ends 160 are configured to be inserted into the housings 150 by a translation movement perpendicular to the viewing direction V , in the direction of arrow F1 in Figure 1.
Les extrémités libres 160 sont extractibles par rapport aux logements 150. Par exemple, les extrémités libres 160 sont configurées pour être extraites des logements 150 par un mouvement de traction perpendiculaire à la direction de visée V. La troisième empreinte 172 est circulaire. La troisième empreinte 172 présente un quatrième diamètre D4 strictement supérieur au deuxième diamètre D2 et au troisième diamètre D3.  The free ends 160 are extractable relative to the housings 150. For example, the free ends 160 are configured to be extracted from the housing 150 by a traction movement perpendicular to the direction of sight V. The third cavity 172 is circular. The third cavity 172 has a fourth diameter D4 strictly greater than the second diameter D2 and the third diameter D3.
L'encoche 175 est complémentaire de la gorge 132. Cela signifie que le bord de l'encoche 175 est configuré pour être engagé dans la gorge 132. Par exemple, l'encoche 175 présente une première largeur L1 supérieure ou égale au deuxième diamètre D2 et inférieure strictement au troisième diamètre D3.  The notch 175 is complementary to the groove 132. This means that the edge of the notch 175 is configured to be engaged in the groove 132. For example, the notch 175 has a first width L1 greater than or equal to the second diameter D2 and strictly lower than the third diameter D3.
Lorsque le filtre 55 est reçu dans la cavité 72, et que le bord de l'encoche 175 est engagé dans la gorge 132, le filtre 55 est solidaire en translation de la garde 50 selon la direction longitudinale D de la poignée 70.  When the filter 55 is received in the cavity 72, and the edge of the notch 175 is engaged in the groove 132, the filter 55 is integral in translation with the guard 50 in the longitudinal direction D of the handle 70.
L'extraction du filtre 55 hors de la cavité 72 va maintenant être décrite.  The extraction of the filter 55 out of the cavity 72 will now be described.
Lorsque le pistolet 10 est assemblé, la garde 50 est dans une position assemblée par rapport au corps 15. Dans la position assemblée, la première extrémité E1 de la garde 50 est fixée au canon 65. Cela signifie que les extrémités libres 160 sont reçues dans les logements 150.  When the gun 10 is assembled, the guard 50 is in an assembled position relative to the body 15. In the assembled position, the first end E1 of the guard 50 is fixed to the barrel 65. This means that the free ends 160 are received in housing 150.
En outre, dans la position assemblée, la quatrième empreinte 120 entoure en partie la portion cylindrique 138 de l'élément de maintien 60. L'élément de maintien 60 est vissé à la poignée 70 dans la première position.  In addition, in the assembled position, the fourth recess 120 partially surrounds the cylindrical portion 138 of the holding member 60. The holding member 60 is screwed to the handle 70 in the first position.
Dans une première étape 210, les extrémités libres 160 sont extraites des logements 150 par traction dans le sens de la flèche F2 à la figure 1 selon une direction perpendiculaire à la direction de visée V. La première extrémité E1 de la garde 50 est donc désolidarisée du canon 65. Ceci est obtenu par une déformation élastique de la garde 50.  In a first step 210, the free ends 160 are extracted from the housings 150 by pulling in the direction of the arrow F2 in Figure 1 in a direction perpendicular to the direction of sight V. The first end E1 of the guard 50 is disengaged This is obtained by an elastic deformation of the guard 50.
Dans une deuxième étape 220, la garde 50 est déplacée dans la direction longitudinale D de la poignée 70 vers une position de manœuvre dans laquelle la garde 50 et l'élément de maintien 60 sont solidaires en rotation. Cela signifie que la quatrième empreinte 120 entoure la deuxième forme 137 dans un plan perpendiculaire à la direction longitudinale D. La garde 50 et l'élément de maintien 60 sont donc solidaires en rotation autour de la direction longitudinale D. Dans une troisième étape 230, l'élément de maintien 60 est dévissé par rapport à la poignée 70 par rotation de la garde 50 autour du deuxième axe A2. L'élément de maintien 60 est déplacé de la première position à la deuxième position. In a second step 220, the guard 50 is moved in the longitudinal direction D of the handle 70 to a maneuvering position in which the guard 50 and the holding member 60 are integral in rotation. This means that the fourth recess 120 surrounds the second shape 137 in a plane perpendicular to the longitudinal direction D. The guard 50 and the holding member 60 are thus integral in rotation about the longitudinal direction D. In a third step 230, the holding member 60 is unscrewed relative to the handle 70 by rotation of the guard 50 about the second axis A2. The holding member 60 is moved from the first position to the second position.
Dans une quatrième étape 240, la garde 50 et le filtre 55 sont solidarisés en translation selon la direction longitudinale D. Pour cela, la quatrième extrémité E4 est insérée dans la troisième empreinte 172, puis le bord de l'encoche 175 est engagé dans la gorge 133 par un mouvement de translation selon une direction perpendiculaire à la direction longitudinale D, dans le sens de la flèche F3 à la figure 5.  In a fourth step 240, the guard 50 and the filter 55 are fixed in translation in the longitudinal direction D. For this, the fourth end E4 is inserted into the third cavity 172, then the edge of the notch 175 is engaged in the groove 133 by a translation movement in a direction perpendicular to the longitudinal direction D, in the direction of the arrow F3 in FIG.
Dans une cinquième étape 250, le filtre 55 est extrait hors de la cavité 72 grâce à l'application, par l'utilisateur, d'un effort de traction T parallèle à la direction longitudinale D et orienté à l'opposé du canon 65.  In a fifth step 250, the filter 55 is extracted from the cavity 72 by the application, by the user, of a tensile force T parallel to the longitudinal direction D and oriented away from the barrel 65.
La garde 50 permet donc d'extraire aisément et sans outil additionnel le filtre 55 de la cavité 72. La garde 50 permet également de démonter aisément le porte-siège 30 et l'axe 25 sans outil additionnel.  The guard 50 thus makes it possible to easily extract the filter 55 from the cavity 72 without additional tools. The guard 50 also makes it possible to easily dismount the seat carrier 30 and the shaft 25 without additional tools.
De plus, l'ouverture cylindrique polygonale 135 permet à un utilisateur d'exercer sur le filtre 55 un couple de torsion autour de la direction longitudinale D. Par exemple, l'utilisateur exerce un couple grâce à une clé Allen complémentaire de l'ouverture cylindrique 135. Il est donc possible, pour un utilisateur, de débloquer le filtre 55 s'il est coincé dans la cavité 72 par de la peinture séchée. L'utilisateur extrait, ensuite, le filtre 55 de la cavité 72 à l'aide des moyens d'extraction 1 15 de la garde 50.  In addition, the polygonal cylindrical opening 135 allows a user to exert on the filter 55 a torsion torque around the longitudinal direction D. For example, the user exerts a torque through an Allen key complementary to the opening cylindrical 135. It is therefore possible for a user to unlock the filter 55 if it is stuck in the cavity 72 by dried paint. The user then extracts the filter 55 from the cavity 72 using the extraction means 1 15 of the guard 50.
Dans un deuxième exemple de réalisation, représenté sur la figure 6, les moyens d'extraction 1 15 sont portés par la première extrémité E1 et les moyens de démontage 1 10 sont portés par la deuxième extrémité E2.  In a second exemplary embodiment, shown in FIG. 6, the extraction means 1 15 are carried by the first end E1 and the disassembly means 1 10 are carried by the second end E2.
Le fonctionnement du deuxième exemple est identique au fonctionnement du premier exemple.  The operation of the second example is identical to the operation of the first example.

Claims

REVENDICATIONS
1 .- Pistolet (10) de projection d'un fluide (F), comprenant un corps (15) composé d'un canon (65) supportant une buse (30) de projection du fluide (F) et d'une poignée (70) présentant une cavité (72) de réception d'un filtre (55), ouverte à l'opposé du canon (65), et une garde (50) apte à protéger contre les chocs la main d'un utilisateur et à empêcher un fonctionnement involontaire en cas de chute, la garde (50) étant montée de façon amovible sur le corps (15) et présentant une première extrémité (E1 ) fixée au canon (65) et une deuxième extrémité (E2) fixée à la poignée (70), 1 .- Pistol (10) for projecting a fluid (F), comprising a body (15) composed of a barrel (65) supporting a nozzle (30) for projecting fluid (F) and a handle ( 70) having a cavity (72) for receiving a filter (55), open opposite the barrel (65), and a guard (50) able to protect against the shocks of a user's hand and to prevent an involuntary operation in the event of a fall, the guard (50) being removably mounted on the body (15) and having a first end (E1) fixed to the barrel (65) and a second end (E2) fixed to the handle ( 70)
caractérisé en ce que la garde (50) comprend des moyens d'extraction (1 15) du filtre (55) hors de la cavité (72).  characterized in that the guard (50) comprises extraction means (1 15) of the filter (55) out of the cavity (72).
2- Pistolet (10) selon la revendication 1 , dans lequel le filtre (55) est mobile en translation par rapport à la poignée (70) et est extractible de la cavité (72), selon une direction longitudinale (D) de la poignée (70) s'éloignant du canon (65), et les moyens d'extraction (1 15) sont aptes à solidariser en translation le filtre (55) et la garde (50) selon cette direction (D). 2- gun (10) according to claim 1, wherein the filter (55) is movable in translation relative to the handle (70) and is removable from the cavity (72) in a longitudinal direction (D) of the handle (70) away from the barrel (65), and the extraction means (1 15) are able to fix in translation the filter (55) and the guard (50) in this direction (D).
3. - Pistolet (10) selon la revendication 1 ou 2, dans lequel le filtre (55) présente une gorge (132) et les moyens d'extraction (1 15) de la garde (50) présentent une encoche3. - gun (10) according to claim 1 or 2, wherein the filter (55) has a groove (132) and the extraction means (1 15) of the guard (50) have a notch
(175) dont le bord est configuré pour être engagé dans la gorge (132). (175) whose edge is configured to be engaged in the groove (132).
4. - Pistolet (10) selon la revendication 3, dans lequel la garde (50) est monobloc. 4. - gun (10) according to claim 3, wherein the guard (50) is monobloc.
5.- Pistolet (10) selon l'une quelconque des revendications précédentes, dans lequel la première extrémité (E1 ) présente deux bras élastiques (100) dont les extrémités libres (160) sont configurées pour être engagées dans deux logements (150) correspondants prévus sur le canon (65). 5. A gun (10) according to any one of the preceding claims, wherein the first end (E1) has two resilient arms (100) whose free ends (160) are configured to be engaged in two housings (150) corresponding provided on the barrel (65).
6.- Pistolet (10) selon l'une quelconque des revendications précédentes, comprenant, en outre, un élément de maintien (60) propre à être fixé à la poignée (70) dans une première position dans laquelle l'élément de maintien (60) empêche l'extraction du filtre (55) hors de la cavité (72), 6. A gun (10) according to any one of the preceding claims, further comprising a holding member (60) adapted to be attached to the handle (70) in a first position in which the holding member ( 60) prevents extraction of the filter (55) from the cavity (72),
caractérisé en ce que la garde (50) comporte, en outre, des moyens de manœuvre (120) de l'élément de maintien (60) par rapport à la poignée (70). characterized in that the guard (50) further comprises operating means (120) of the holding member (60) relative to the handle (70).
7.- Pistolet (10) selon la revendication 6, dans lequel l'élément de maintien (60) est propre à être vissé à la poignée (70) et les moyens de manœuvre (120) sont propres à visser ou à dévisser l'élément de maintien (60) par rapport à la poignée (70). 7. A gun (10) according to claim 6, wherein the holding member (60) is adapted to be screwed to the handle (70) and the operating means (120) are adapted to screw or unscrew the holding member (60) with respect to the handle (70).
8.- Pistolet (10) selon la revendication 7, dans lequel l'élément de maintien (60) présente une forme extérieure (137) polygonale et les moyens de manœuvre (120) présentent une empreinte de forme complémentaire de la forme extérieure (137) de l'élément de maintien (60). 8. Gun (10) according to claim 7, wherein the holding element (60) has a polygonal outer shape (137) and the operating means (120) have a complementary shape shape of the outer shape (137). ) of the holding member (60).
9.- Pistolet (10) selon l'une quelconque des revendications précédentes, dans lequel le canon (65) porte un porte-siège (30) propre à recevoir en appui un siège (35) d'une buse (45) de projection de fluide (F), le porte-siège (30) étant vissé au canon (65) et la garde (50) comportant en outre des moyens de dévissage (105) du porte-siège (30) par rapport au canon (65), alors que le pistolet (10) comporte, en outre, une gâchette (20) pivotant autour d'un axe (25) traversant le corps (15), et la garde (50) comporte des moyens de démontage (1 10) de l'axe (25) par rapport au corps (65). 9. A gun (10) according to any one of the preceding claims, wherein the barrel (65) carries a seat-carrier (30) adapted to receive in abutment a seat (35) of a nozzle (45) projection of fluid (F), the seat carrier (30) being screwed to the barrel (65) and the guard (50) further comprising means for unscrewing (105) the seat carrier (30) relative to the barrel (65) , while the gun (10) further comprises a trigger (20) pivoting about an axis (25) passing through the body (15), and the guard (50) comprises disassembly means (1 10) of the axis (25) relative to the body (65).
10.- Filtre (55) pour pistolet de projection de fluide (10) selon l'une quelconque des revendications précédentes, le filtre (55) présentant une troisième extrémité (E3) orientée vers le haut de la poignée (70) et une quatrième extrémité (E4) orientée vers le bas de la poignée (70) lorsque le filtre (55) est reçu dans la cavité (72), 10. A filter (55) for a fluid spray gun (10) according to any one of the preceding claims, the filter (55) having a third end (E3) facing upwards from the handle (70) and a fourth end (E4) facing downwardly of the handle (70) when the filter (55) is received in the cavity (72),
caractérisé en ce que la quatrième extrémité comprend des moyens (130) complémentaires des moyens d'extraction (1 15).  characterized in that the fourth end comprises means (130) complementary to the extraction means (1 15).
1 1 .- Filtre (55) selon la revendication 10, dans lequel la quatrième extrémité (E4) présente une ouverture cylindrique (135) d'arrivée du fluide, 1 1 .- Filter (55) according to claim 10, wherein the fourth end (E4) has a cylindrical opening (135) for the arrival of the fluid,
caractérisé en ce que l'ouverture cylindrique (135) est à base polygonale.  characterized in that the cylindrical opening (135) is polygonal in base.
12.- Procédé d'extraction d'un filtre (55) de la poignée d'un pistolet (10) de projection d'un fluide (F), le pistolet (10) comprenant un corps (15) composé d'un canon (65) supportant une buse (45) de projection du fluide (F) et d'une poignée (70) présentant une cavité (72) de réception d'un filtre (55) ouverte à l'opposé du canon (65) et une garde (50) apte à protéger contre les chocs la main d'un utilisateur, la garde (50) présentant une première extrémité (E1 ) fixée au canon (65) et une deuxième extrémité (E2) fixée à la poignée (70), 12.- A method of extracting a filter (55) from the handle of a gun (10) for projecting a fluid (F), the gun (10) comprising a body (15) consisting of a barrel (65) supporting a fluid spray nozzle (45) and a handle (70) having a filter receiving cavity (55) open opposite the barrel (65) and a guard (50) adapted to protect the hand of a user against shock, the guard (50) having a first end (E1) attached to the barrel (65) and a second end (E2) attached to the handle (70) ,
le procédé comprenant les étapes de : - désolidarisation de la première extrémité (E1 ) et du canon (65), the method comprising the steps of: detaching the first end (E1) and the barrel (65),
- solidarisation en translation de la garde (50) et du filtre (55), et  - Securing in translation of the guard (50) and the filter (55), and
- extraction (T) du filtre (55) hors de la cavité (72) au moyen de la garde (50).  extraction (T) of the filter (55) out of the cavity (72) by means of the guard (50).
EP16705081.4A 2015-02-12 2016-02-11 Fluid spray gun, filter for such a gun, and method for extracting a filter out of such a gun Active EP3256260B8 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1551167A FR3032632A1 (en) 2015-02-12 2015-02-12 FLUID SPRAY GUN, FILTER FOR SUCH A GUN, AND METHOD OF EXTRACTING A FILTER OUTSIDE SUCH A GUN
PCT/EP2016/052869 WO2016128492A1 (en) 2015-02-12 2016-02-11 Fluid spray gun, filter for such a gun, and method for extracting a filter out of such a gun

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EP3256260A1 true EP3256260A1 (en) 2017-12-20
EP3256260B1 EP3256260B1 (en) 2021-01-06
EP3256260B8 EP3256260B8 (en) 2021-03-24

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US (1) US20180111142A1 (en)
EP (1) EP3256260B8 (en)
JP (1) JP6737794B2 (en)
KR (1) KR102518028B1 (en)
CN (1) CN107223075B (en)
ES (1) ES2850323T3 (en)
FR (1) FR3032632A1 (en)
WO (1) WO2016128492A1 (en)

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WO2019209801A1 (en) * 2018-04-24 2019-10-31 Graco Minnesota Inc. Low profile airless spray gun for applying paint
US11772117B2 (en) 2019-12-31 2023-10-03 Graco Minnesota Inc. Spray gun for spraying paints and other coatings
US11666932B2 (en) 2020-03-27 2023-06-06 Wagner Spray Tech Corporation Fluid applicator
EP4384325A1 (en) * 2021-08-12 2024-06-19 Wagner Spray Tech Corporation Improved fluid applicator
USD1046076S1 (en) * 2021-10-15 2024-10-08 Sata Gmbh & Co. Kg Spray gun

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KR200460265Y1 (en) * 2010-06-09 2012-05-15 주식회사 태웅코로죤 Tip-Guard for spray gun
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CN102773183B (en) * 2012-08-07 2014-12-24 林茂贤 Novel coating spray gun device

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JP6737794B2 (en) 2020-08-12
WO2016128492A1 (en) 2016-08-18
KR20170117069A (en) 2017-10-20
ES2850323T3 (en) 2021-08-27
EP3256260B8 (en) 2021-03-24
FR3032632A1 (en) 2016-08-19
JP2018505051A (en) 2018-02-22
CN107223075A (en) 2017-09-29
KR102518028B1 (en) 2023-04-05
US20180111142A1 (en) 2018-04-26
CN107223075B (en) 2019-11-05
EP3256260B1 (en) 2021-01-06

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