EP3930913A1 - Coque arrière pour un pistolet pulvérisateur ainsi que pistolet pulvérisateur comprenant une telle coque arrière - Google Patents

Coque arrière pour un pistolet pulvérisateur ainsi que pistolet pulvérisateur comprenant une telle coque arrière

Info

Publication number
EP3930913A1
EP3930913A1 EP20711050.3A EP20711050A EP3930913A1 EP 3930913 A1 EP3930913 A1 EP 3930913A1 EP 20711050 A EP20711050 A EP 20711050A EP 3930913 A1 EP3930913 A1 EP 3930913A1
Authority
EP
European Patent Office
Prior art keywords
shell
rear shell
spray gun
area
designed
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
EP20711050.3A
Other languages
German (de)
English (en)
Other versions
EP3930913B1 (fr
Inventor
Roger TOBLER
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.)
Gema Switzerland GmbH
Original Assignee
Gema Switzerland GmbH
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 Gema Switzerland GmbH filed Critical Gema Switzerland GmbH
Publication of EP3930913A1 publication Critical patent/EP3930913A1/fr
Application granted granted Critical
Publication of EP3930913B1 publication Critical patent/EP3930913B1/fr
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
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/63—Handgrips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
    • B05B5/032—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying for spraying particulate materials
    • 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
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/62—Arrangements for supporting spraying apparatus, e.g. suction cups

Definitions

  • this relates in particular to a spray gun for spray-coating objects with powdery coating material.
  • the invention is not limited to this, but can also be used for
  • Coating material can be used.
  • the invention relates to an optimized rear shell for spray guns, with which the rear side of a base body of a spray gun can be covered.
  • Spray guns of the type considered here are already known from the prior art.
  • the document EP 0 383 030 A1 relates to a spray gun for spray-coating objects with coating powder.
  • the spray gun known from this prior art has a handle part and a gun barrel connected to the handle part.
  • Spray guns can be seen in the fact that the handle parts of the spray guns are often not optimally designed in ergonomic terms.
  • the spray guns known from the prior art have the disadvantage that they often do not have the necessary rigidity with regard to bending and torsion.
  • the invention is based on the object with respect to
  • this relates to an optimized stain shell for a spray gun, the spray gun having a handle part and a gun barrel connected to the handle part. It is provided according to the invention that the stain shell can be detachably and interchangeably attached to the back of a base body of the spray gun.
  • the stain shell has a first area designed as a grip shell, which is designed to cover the grip body of the spray gun, in particular on the rear. Furthermore, the stain shell has a second area, designed as a cover shell, for covering the rear of a rear area of the gun barrel.
  • At least one connecting element is provided on the second area of the stain shell, via which, if necessary, a releasable connection can be formed with a part which is at least partially complementary thereto.
  • the entire rear shell, together with the at least one connecting element is designed as a monolithic plastic component, in particular a plastic injection-molded part.
  • the rear area of the spray gun and in particular the area which connects the handle part of the spray gun to the gun barrel can be made particularly rigid and torsion-resistant, which has a direct effect on simplified handling of the entire spray gun.
  • the one-piece rear shell ensures that the entire spray gun can be optimally sealed, since the
  • the first area designed as a handle shell
  • the second area designed as a cover shell.
  • the rear shell can furthermore have a transition area which acts as a handle shell
  • first area connects to the second area formed as a cover shell.
  • transition area together with the first area designed as a grip shell and the second area designed as a cover shell, is designed as a whole as a monolithic plastic component.
  • the first area designed as a handle shell is at least partially approximately U or V-shaped when viewed in cross section and has a rear wall and two side walls integrally formed thereon. It is advisable here if the outer surfaces of the rear wall and the side walls formed thereon act as a handle shell formed first area at least in areas have a configuration adapted to increase the grip security, and in particular have a texture.
  • the outer surfaces of the rear wall and the wall formed thereon have
  • Side walls of the first area which is designed as a grip shell, have a polygonal wave shape which is particularly adapted to the hand of the operator of the spray gun.
  • an ergonomically optimal shape of the handle part or the first area designed as a handle shell is an ergonomic polygonal wave shape in order to create a perfect grip.
  • Embodiments of the first area designed as a grip shell are limited.
  • At least one cable strain relief is preferably integrated in the rear wall of the first area designed as a grip shell.
  • the cable strain relief is integrated in the rear shell and in detail in the rear wall of the first area designed as a grip shell, the spray gun can be made particularly compact.
  • this area is approximately U-shaped in cross section, at least in some areas, with a rear wall and two side walls formed integrally thereon.
  • the second area designed as a cover shell furthermore has a first area designed as a handle shell at least partially or
  • This upper wall is in one piece with the rear wall and the wall formed thereon
  • the at least one connecting part Formed on the side walls of the second area designed as a cover shell. It is advisable here for the at least one connecting part to be formed in one piece on this upper wall. A hook-shaped or eyelet-shaped element is particularly suitable as the connecting part.
  • Control element and / or at least one display element of the spray gun is provided.
  • the at least one opening is designed in particular to receive and / or embed the at least one operating element and / or the at least one display element of the spray gun in a recessed manner in order to ensure optimal protection of the operating element or the display element, while at the same time the penetration of Coating material is effectively prevented in the edge region of the opening.
  • Cover shell formed second area is integrated at least one electrically conductive grounding element.
  • the at least one grounding element serves to ground a counter electrode of the spray gun or to a
  • the grounding element integrated in the rear shell can be connected via a
  • Earthing conductors such as a galvanically conductive connecting web, are connected to a counter electrode arranged in the vicinity of a charging electrode of the spray gun in order to connect the counter electrode to an electrical potential which is different from the electrical potential, to which the charging electrode is connected.
  • a counter electrode arranged in the vicinity of a charging electrode of the spray gun in order to connect the counter electrode to an electrical potential which is different from the electrical potential, to which the charging electrode is connected.
  • the grounding element integrated in the rear shell is preferably connected in an electrically conductive manner to the grounding or a potential connection via an electrical line running in particular in the interior of the handle of the spray gun.
  • a centering in particular in the form of a centering tab or the like, is provided at least in some areas on the front longitudinal edge of the side walls of the rear shell.
  • the centering is designed in particular to bring about an independent alignment of the position of the rear shell relative to the rear side of the base body of the spray gun when the rear shell is mounted on the rear side of the base body.
  • At least regionally an at least regionally stepped area is implemented on the front longitudinal edge of the side walls of the rear shell and in particular in or on the end face of the front longitudinal edge of the side walls of the rear shell. In this way, an optimal seal against the back of the
  • Base body of the spray gun can be achieved, since a labyrinth sealing area can be formed by the stepped area.
  • the rear shell is on the back of the main body of the spray gun
  • the entire rear shell is preferably designed as a monolithic component made of an antistatic plastic material.
  • an antistatic plastic material Polyamide-12 is mentioned at this point, although others are also mentioned
  • Plastic materials would be suitable in principle.
  • the invention also relates to a spray gun with such a rear shell.
  • FIG. 1 shows an example schematically and in a side view
  • FIG. 2 schematically and in an exploded view the exemplary
  • FIG. 3 schematically and in a first isometric view the
  • FIG. 4 schematically and in an isometric exploded view the
  • FIG. 5 schematically and in a second isometric exploded view the exemplary embodiment of the invention
  • the spray gun 1 as shown schematically with reference to an exemplary embodiment in the drawings, is used
  • the illustrated embodiment of the spray gun 1 according to the invention is the coating material to be applied to the object especially electrostatically charged or chargeable
  • a spray gun 1 constructed according to the invention can also be used to apply other coating materials instead of electrostatically charged coating powder to an object.
  • the spray gun 1 can be used to apply liquid coating materials to an object.
  • the spray gun 1 as it is shown schematically in the drawings, essentially has a handle part 2 and one connected to the handle part 2
  • the manually grippable handle part 2 has, as in particular the
  • the base body 4 of the handle part 2 is integral with the base body 4 of the handle part 2
  • Base body 4 of the gun barrel 3 formed, for example as a
  • the gun barrel 3 of the spray gun 1 has one up to one
  • Nozzle arrangement 6 extending first (front) area 3a and a rear second (rear) area 3b. It is provided here that the handle part 2 is arranged between the front and rear areas 3a, 3b, specifically preferably in an area in which the handle part 2 is arranged above the center of gravity of the entire gun barrel 3. This promotes the well-being of the operator of the spray gun 1 during the use of the spray gun 1, in particular over a relatively long period of time.
  • the base body 4 of the spray gun 1 is in particular formed in one piece from an electrically insulating (polymer) material.
  • an electrode arrangement can be accommodated or integrated in the gun barrel 3 of the spray gun 1 in order, if necessary, to electrostatically charge the coating material to be sprayed.
  • the gun barrel 3 inside corresponding voltage multiplier unit, which is connected to the electrode arrangement.
  • the voltage multiplier unit and the electrode assembly cooperate to create an electric field for electrostatically charging the material to be sprayed onto an object
  • the coating material to be sprayed in particular coating powder carried along in an air stream, is fed to the spray gun 1 from a powder source not shown in the drawings.
  • the flow of coating powder carried in air is controlled by a
  • connections 9a for compressed air and connections 9b for electrical energy are provided at the lower end region of the handle part 2.
  • the back of the main body of the spray gun 1 is in the
  • Embodiment of the spray gun 1 according to the invention shown in the drawings covered over a rear shell 10.
  • the rear shell 10 can be detachably and interchangeably attached to the rear of the base body of the spray gun 1, with the rear shell 10 preferably being fixed to the base body 4 of the spray gun 1 by a single screw 30 guided through the rear shell 10 in the attached state.
  • a further screw 31 can optionally be provided which, through the lower end region of the base body of the gun barrel 3, cooperates in a suitable manner with a screw receptacle provided in the interior of the rear shell 10.
  • the rear shell 10 essentially has a first area designed as a grip shell 11 and a second area designed as a cover shell 12, the first area designed as a grip shell 11 serving in particular to cover the base 4 of the gun barrel 3 of the spray gun 1 on the rear.
  • the second area formed as a cover shell 12 of The rear shell 10 serves to cover the rear of a rear area of the gun barrel 3.
  • a connecting element 14 in the form of a hook-shaped area is also provided on the second area of the rear shell 10.
  • Connecting element 14, the spray gun 1 in its fully assembled state can be detachably connected, for example, to a holder.
  • the entire rear shell 10 together with the at least one connecting element 14 is designed as a monolithic plastic component, in particular a plastic injection-molded part.
  • the rear shell 10 can also have a
  • transition area 13 which connects the first area designed as a grip shell 11 with the second area designed as a cover shell 12. This transition area 13 is also (as part of the entire rear shell 10) monolithically and integrally connected to the handle shell 11 and the cover shell 12.
  • the first area designed as a grip shell 11, is approximately U or V-shaped in cross section, at least in some areas, and has a rear wall and two side walls formed integrally thereon.
  • the outer surfaces of the rear wall and the side walls of the first area formed as a grip shell 11 formed thereon have a configuration adapted to increase the grip security.
  • Embodiment for increasing the grip security a polygonal wave shape that is adapted to the hand of the operator of the spray gun 1, and specifically adapted in an ergonomic manner, is provided.
  • FIG. 3 it can be seen in particular that, in the embodiment shown in the drawings, in the rear wall of the first area of the rear shell 10, which is designed as a handle shell 11
  • Cable strain relief 15 is integrated.
  • the second area designed as a cover shell 12 has a first area designed as a grip shell 11 at least partially or in areas
  • the connecting element 14 is formed in one piece in the form of a hook-shaped element.
  • the isometric view for example according to FIG. 3 it can be seen that in the exemplary embodiment in the rear wall of the second area, which is designed as a cover shell 12, there is an in particular recessed opening 16 for an operating element 5 of the spray gun 1
  • this opening 16 is formed that
  • Control element 5 of the spray gun 1 to be received and embedded in a recessed manner.
  • the at least one grounding element 17 serves to ground a counter electrode of the spray gun or to connect to it
  • grounding element 17 integrated in the rear shell 10 can be connected via a grounding conductor, such as a galvanically conductive one
  • Spray gun arranged counter electrode can be connected to the
  • the grounding element 17 integrated in the rear shell is electrically conductively connected to the grounding or a potential connection via an electrical line running in particular in the interior of the handle 2 of the spray gun 1.
  • a centering 18 in the form of a centering tab is provided at least in some areas, via which an in particular automatic alignment of the position of the rear shell 10 relative to the rear of the base body of the spray gun 1 when the rear shell 10 is mounted on the rear the base body is made possible.
  • At least one guide element 21 formed in the interior of the rear shell 10 is provided in order to simplify a plug-in movement when the rear shell 10 is mounted on the rear of the base body of the spray gun 1.
  • the end faces 19 of the front longitudinal edge of the side walls of the rear shell 10 are preferably designed to be stepped in order to be able to form a type of labyrinth seal with a corresponding area on the rear side of the base body of the spray gun 1.

Abstract

L'invention concerne une coque arrière (10) pour un pistolet pulvérisateur (1), en particulier un pistolet pulvérisateur de poudre, le pistolet pulvérisateur (1) présentant une partie de poignée (2) et un canon de fusil (30 raccordé à la partie de poignée (2). La coque arrière (10) peut être montée de façon amovible et interchangeable sur la face arrière d'un corps de base (4) du pistolet pulvérisateur (1) et présente une première partie conçue comme coque de poignée (11) et, pour la couverture arrière d'une partie arrière du canon de pistolet (3), une deuxième partie conçue comme coque de recouvrement (12). Dans la deuxième partie de la coque arrière (10), au moins un élément de raccordement (14) est prévu, pour la formation, quant nécessaire, d'un raccord amovible à une pièce au moins partiellement complémentaire à celui-ci. Selon l'invention, la coque arrière (10) entière est en particulier conçue ensemble avec l'au moins un élément de raccordement (14) comme un composant en matière plastique monolithique, en particulier une pièce moulée par injection en matière plastique.
EP20711050.3A 2019-03-01 2020-02-27 Bol arrière pour un pistolet de pulvérisation et pistolet de pulvérisation avec un tel bol arrière Active EP3930913B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019105244.0A DE102019105244A1 (de) 2019-03-01 2019-03-01 Heckschale für eine sprühpistole sowie sprühpistole mit einer solchen heckschale
PCT/EP2020/055086 WO2020178114A1 (fr) 2019-03-01 2020-02-27 Coque arrière pour un pistolet pulvérisateur ainsi que pistolet pulvérisateur comprenant une telle coque arrière

Publications (2)

Publication Number Publication Date
EP3930913A1 true EP3930913A1 (fr) 2022-01-05
EP3930913B1 EP3930913B1 (fr) 2023-07-26

Family

ID=69810776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20711050.3A Active EP3930913B1 (fr) 2019-03-01 2020-02-27 Bol arrière pour un pistolet de pulvérisation et pistolet de pulvérisation avec un tel bol arrière

Country Status (6)

Country Link
US (1) US20220080447A1 (fr)
EP (1) EP3930913B1 (fr)
CN (1) CN113423509A (fr)
DE (1) DE102019105244A1 (fr)
PL (1) PL3930913T3 (fr)
WO (1) WO2020178114A1 (fr)

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758039A (en) * 1972-10-12 1973-09-11 W Wagner Spray gun
US4214709A (en) * 1979-03-08 1980-07-29 Binks Manufacturing Company Electrostatic spray coating apparatus
DE3002790C2 (de) * 1980-01-26 1982-07-29 Josef 7918 Illertissen Kränzle Halte- und Betätigungsvorrichtung für Spritzeinrichtungen von Hochdruckwaschanlagen
US4437614A (en) * 1982-09-28 1984-03-20 Binks Manufacturing Company Electrostatic air atomization spray coating system
DE3904438A1 (de) * 1989-02-14 1990-08-16 Gema Ransburg Ag Spruehbeschichtungsgeraet zum elektrostatischen spruehbeschichten
DE3904437A1 (de) * 1989-02-14 1990-08-16 Gema Ransburg Ag Spruehpistole zum elektrostatischen spruehbeschichten
ES1025823Y (es) * 1993-09-29 1994-08-16 Fusco Lupo Jose De Pistola para pulverizacion electrostastica de objetos.
JP2638750B2 (ja) * 1994-10-13 1997-08-06 リョービ株式会社 電動工具のハンドル構造
US20030080220A1 (en) * 1999-09-16 2003-05-01 Mather Brian D. Powder spray gun with inline angle spray nozzle
US6536688B1 (en) * 2002-05-24 2003-03-25 Success & Tech Industrial Co., Ltd. Two-piece hand grip structure of pistol nozzle with flow regulating control knob
CN100457284C (zh) * 2002-10-22 2009-02-04 格雷索明尼苏达有限公司 用于快速凝固材料的多组分喷枪
ITMI20042166A1 (it) * 2004-11-11 2005-02-11 Beretta Armi Spa Impugnatura di arma da fuoco in particolare pistola
US20060202060A1 (en) * 2004-12-06 2006-09-14 Alexander Kevin L Dispensing device handle assembly
DE102005017931A1 (de) * 2005-04-18 2006-10-19 Itw Gema Ag Pulversprühbeschichtungspistole und Pistolengehäuse hierzu
US8814066B2 (en) * 2011-09-22 2014-08-26 Ryeh Ryh Enterprise Co. Ltd. Grip structure of water sprayer
CN104684652A (zh) * 2012-10-01 2015-06-03 格瑞克明尼苏达有限公司 用于静电喷枪的接地杆
DE102016107465A1 (de) * 2016-04-22 2017-10-26 J. Wagner Gmbh Farbsprühgerät

Also Published As

Publication number Publication date
WO2020178114A1 (fr) 2020-09-10
DE102019105244A1 (de) 2020-09-03
CN113423509A (zh) 2021-09-21
PL3930913T3 (pl) 2023-12-18
EP3930913B1 (fr) 2023-07-26
US20220080447A1 (en) 2022-03-17

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