WO2009106487A1 - Pistolet à pulvériser - Google Patents

Pistolet à pulvériser Download PDF

Info

Publication number
WO2009106487A1
WO2009106487A1 PCT/EP2009/052050 EP2009052050W WO2009106487A1 WO 2009106487 A1 WO2009106487 A1 WO 2009106487A1 EP 2009052050 W EP2009052050 W EP 2009052050W WO 2009106487 A1 WO2009106487 A1 WO 2009106487A1
Authority
WO
WIPO (PCT)
Prior art keywords
spray gun
spray
housing
unit
connection region
Prior art date
Application number
PCT/EP2009/052050
Other languages
German (de)
English (en)
Inventor
Joao Jorge Bergner
Nuray Tekogul
Joerg Albrecht
Peter Ibele
Christoph Cramer
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to CN200980106245.XA priority Critical patent/CN101952043B/zh
Priority to RU2010139290/05A priority patent/RU2495727C2/ru
Priority to EP09715002A priority patent/EP2257383A1/fr
Publication of WO2009106487A1 publication Critical patent/WO2009106487A1/fr

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
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2416—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the means for producing or supplying the atomising fluid, e.g. air hoses, air pumps, gas containers, compressors, fans, ventilators, their drives
    • 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
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits

Definitions

  • the present invention relates to a spray gun for dispensing spray, comprising a housing on which a handle is arranged, a spray unit comprising the spray nozzle of the spray gun, and a connecting means for releasably connecting a connecting portion of the housing with a connecting portion of the spray unit.
  • Spray guns of the type mentioned are known in the prior art in a variety of configurations. With such spray guns sprayed can be sprayed, in particular water-dilutable and solvent-containing spray, such as paints, varnishes, glazes, primers, stains and wood preservatives, to name but a few.
  • the spraying method used is usually the low-pressure spraying method, which is a method in which sprayed material sprays at a low pressure of about 0.2 to about 0.5 bar and with a high volume of air at about 200 liters per minute becomes.
  • This HVLP spraying process achieves low overspray, i. because of its low spray losses, coating levels up to about 65%, and thus superior to conventional processes that achieve coating levels between about 20 and about 35%.
  • Characteristic of the method is the air surrounding the spray material, which reduces overspray and color fog. This results in advantages such as paint savings and low solvent emissions, which have a particularly environmentally friendly effect.
  • Such spray guns are divided into two main parts, namely a housing, on which a handle is formed, and in a spray unit, by means of a connecting device can be interconnected and separated from each other.
  • a connecting device can be interconnected and separated from each other.
  • Such subdivision of the spray gun is advantageous in that the spray unit can be separated from the housing, so that the spray unit can be cleaned more easily.
  • the housing forms an electrical unit which has electrical components, for example a compressed-air generating device for generating the pressure under which the sprayed material is delivered by the spray gun.
  • the spray unit and the housing are fastened to each other by first associating a connecting portion of the housing and a connecting portion of the spray unit with each other in a first step, and then, in a second step, using a coarse thread provided at the connecting portions An approximately 90 ° rotation are attached to each other.
  • the housing and the spray unit can then be separated again.
  • the assembly of the components is a problem, since the assignment of the housing and the spray unit can only be completed in a narrow angular range. This requires a lot of tact despite the existing markings.
  • the direction of rotation during disassembly of both components is explanatory.
  • the present invention seeks to provide a spray gun of the type mentioned, which has an alternative structure and at least partially solves the problems described above.
  • the present invention provides a spray gun with a housing, on which a handle is formed, a spray unit, which comprises the spray nozzle of the spray gun, and a connection device for releasably connecting a connection region of the housing with a connection region of the spray unit.
  • connection region of the housing and the connection region of the injection unit are such that they can be inserted into one another and connected to one another while carrying out a straight-line relative movement.
  • the known rotational relative movement of the components is replaced during their assembly and disassembly by a straight-line relative movement, whereby the aforementioned disadvantages associated with the rotary relative movement can be eliminated.
  • the two connection regions are preferably designed as ring-like connecting elements which can be plugged into one another, the contour of the inner circumference of one connecting element at least partially corresponding to the contour of the outer circumference of the other connecting element.
  • the ring-like connecting elements may for example have a circular or a polygonal contour.
  • a guide device which is designed such that it guides the connection region of the housing and the connection region of the spray unit during its relative movement.
  • a guide device can already be produced in that the connecting elements, as described above, are polygonal, whereby rotation of the connecting portions relative to each other during the insertion movement is prevented.
  • the guide device is therefore preferably such that it predetermines a clear relative orientation of the connection regions at the time of the insertion process.
  • the guide device therefore comprises at least one groove and at least one projection, wherein the at least one projection is guided during the relative movement in the at least one groove. In this way, a clear relative alignment of the connection areas during the insertion process can be achieved.
  • the connecting device comprises at least one blocking element which is designed such that it has a predetermined relative position and orientation of the connecting regions. xed.
  • the blocking element thus prevents a relative movement of the connecting regions in the assembled state.
  • the at least one blocking element is a latching element engaging in at least one recess.
  • the locking element is annular and formed deformable by applying a force, wherein the locking element engages in the non-deformed state in the at least one recess and is decoupled in the deformed state of the recess.
  • At least one actuating element for actuating the blocking element is preferably provided, such as, for example, a pushbutton accessible from the outside of the housing or the like.
  • actuating element for actuating the blocking element
  • several actuators are provided, which must be operated together to release the locking element from its locked position. Accordingly, the risk is reduced that the locking position of the locking element is accidentally canceled.
  • two push buttons can be provided, which are arranged at different positions on the spray gun and must be operated together to actuate the locking element.
  • the connecting device preferably comprises at least one stop against which one of the connecting regions abuts at the end of the insertion movement and which defines the position of the fixing by the blocking element.
  • FIG. 1 is a perspective view of a spray gun according to an embodiment of the present invention in the assembled state.
  • Fig. 2 is a side view of the spray gun shown in Figure 1 in the disassembled state.
  • Fig. 3 is a partially sectioned and enlarged side view of connecting portions of the spray gun shown in Figs. 1 and 2 serving to mount and dismount the spray gun;
  • Fig. 4A is a sectional view of a first connection portion taken along the line IV-IV in Fig. 3;
  • Fig. 4B is a sectional view of a second connection portion taken along the line V-V in Fig. 3, with a detent member of the second connection portion being in a non-deformed state;
  • Fig. 5A is a sectional view corresponding to Fig. 4A.
  • Fig. 5B is a sectional view of the second connection portion along the line V-V in Fig. 3, wherein a locking element of the second connection portion is in a deformed state.
  • the spray gun 10 consists in the present case of two main units, namely an electric unit 12 and a spray unit 14, which are releasably fastened together by means of a connecting device 16, which will be described in more detail below with reference to FIG.
  • the electrical unit 12 comprises a housing 18 which defines a receiving space for the electrical components of the spray gun 10, in particular for a compressed air generating device, not shown, which generates the pressure under which the sprayed material is discharged from the spray gun 10.
  • Integral with the housing 18 is an ergonomically shaped handle 20 which can be conveniently gripped by a user to operate the spray gun 10.
  • an operating switch 22 is provided on the handle 20. Via a cable 24, which is arranged at the lower end of the handle 20, the electric unit 12 is supplied with the required electrical energy.
  • a spray nozzle 26 is arranged, with the aid of which the shape and the direction of the spray jet emerging from the spray gun 10 is adjustable.
  • the spray nozzle 26 may be configured such that a user may select between an exit beam in the form of a point, a horizontally extending ellipse, or a vertically extending ellipse. Accordingly, the shape of the discharge jet can be adapted to the respective application.
  • a spray material container 28 is detachably attached, which receives the supply of spray material.
  • the sprayed material may be, for example, paints, varnishes, glazes, primers, stains and wood preservatives, to name only a few possibilities.
  • Fig. 2 is a side view of the spray gun 10 shown in Fig. 1 in the disassembled state, that is, in the state in which the spray unit 14 is separated from the electric unit 12.
  • the spray unit 14 comprises a first connection area 30 and the electrical unit 12 a second connection area 32, wherein the second connection area 32 of the electrical unit 12 in the illustration according to FIG. 2 is concealed by the housing 18 and accordingly not visible is.
  • the first connection portion 30 and the second connection portion 32 together constitute the connection device 16, which will be explained in more detail below with reference to FIGS. 3, 4A, 4B, 5A and 5B.
  • Fig. 3 is a partially sectional side view of the connector 16;
  • Fig. 4A is a sectional view of the first connection portion 30 taken along the line IV-IV in Fig. 3;
  • Fig. 4B is a sectional view of the second connection portion 32 taken along the line V-V in Fig. 3, wherein a latching member of the second connection portion 32 is in a non-deformed state;
  • Fig. 5A is a sectional view corresponding to Fig. 4A; and FIG. 5B is a sectional view of the second connection portion 32 taken along the line V-V in FIG. 3, wherein a latching member of the second connection portion 32 is in a deformed state.
  • the connecting portions 30 and 32 are each provided as annular connecting members of substantially circular cross-section.
  • the maximum outer diameter d a ma ⁇ . of the first connection region 30 is slightly smaller than the minimum inner diameter Ci 1 min . of the second connection region 32, so that the first connection region 30 can be inserted into the second connection region 32.
  • the play between the maximum outside diameter d a mx . and the minimum n diameter Cl 1 min . should be chosen such that it is sufficiently large to ensure trouble-free insertion of the first connection region 30 into the second connection region 32 - but it should also be sufficiently small that in the inserted state of the connection regions 30 and 32 no particular wobbling movements between the connection regions 30 and 32 can arise.
  • the first connection portion 30 includes two diametrically opposed guide grooves 34 that engage with two guide protrusions 36 during insertion of the first connection portion 30 into the second connection portion 32, projecting from the inner diameter of the second connection portion 32 at corresponding diametrically opposite positions.
  • the guide grooves 34 and the guide projections 36 together form a guide device which ensures that the first connection region 30 is inserted into the second connection region 32 in a predetermined orientation.
  • the guide grooves 34 and / or the guide projections 36 may have a chamfer (not shown) in those portions which first engage each other to facilitate insertion of the guide projections 36 into the guide grooves 34.
  • the guide grooves 34 and the guide projections 36 can alternatively also be arranged diametrically offset from each other, so do not have to face each other.
  • optionally only one guide groove and only one guide projection or more than two guide grooves and two guide projections can be provided.
  • annular seal 38 is arranged, which seals the gap between the first connection region 30 and the second connection region 32 in the inserted state.
  • the seal 38 accordingly prevents leakage of compressed air from the connecting portions 30 and 32.
  • Stop provided in the form of a snap ring 39, to which the first connecting portion 30 abuts at the end of the insertion movement.
  • two diametrically opposed groove-shaped recesses 40 are provided on the outer circumference of the first connection region 30.
  • two diametrically opposed groove-shaped recesses 42 are arranged on the outer circumference of the second connection region 32.
  • an annular locking element 44 which is formed deformable by applying a force.
  • the locking element 44 engages both in the groove-shaped recess 42 of the second connecting portion 32 and in the groove-shaped recess 40 of the first connecting portion 30 when the first connecting portion 30 is inserted into the second connecting portion 32, wherein it is deformed in its Condition comes out of engagement with the groove-shaped recess 40 of the first connecting portion 30.
  • the aligned in the radial direction arrangement of the groove-shaped recesses 40 and 42 with the locking element 44 is ensured by serving as Anatsch Seegering 39.
  • Fig. 4B shows the annular locking element 44 in the undeformed state.
  • the maximum distance a max . between the opposite inner sides of the locking element 44 in the vertical direction in the non-deformed state of the locking element 44 is smaller than the maximum outer diameter d at a x . of the first connecting portion 30, which is why the locking element 44 engages in the mated state of the two connecting portions 30 and 32 in both of the mutually aligned groove-shaped recesses 40 and 42.
  • the first connection portion 30 is held at the second connection portion 32, so that the assembled state of the spray gun 10 shown in FIG. 1 is achieved.
  • actuators 48 are provided in the form of snaps.
  • the deformation of the locking element 44 shown in Fig. 5B is thus achieved when both of the actuators 48 are actuated at the same time.
  • the compressed air generating device need not be integrated into the housing 18. It may alternatively be provided as a separate unit from the spray gun, the spray gun in this case over the compressed air a compressed air hose is supplied, which is connected to the separate compressed air generating device.

Landscapes

  • Nozzles (AREA)
  • Catching Or Destruction (AREA)

Abstract

L'invention porte sur un pistolet à pulvériser (10), comprenant un boîtier (18) sur lequel est disposée une poignée (20), une unité de pulvérisation (14) qui comprend la buse de pulvérisation (26) du pistolet de pulvérisation, et un dispositif de liaison (16) pour la liaison amovible d'une zone de liaison (32) du boîtier avec une zone de liaison de l'unité de pulvérisation, la zone de liaison du boîtier et la zone de liaison (30) de l'unité de pulvérisation étant constituées de telle sorte qu'elles peuvent être introduites l'une dans l'autre et peuvent être reliées l'une à l'autre sous l'action d'un mouvement relatif rectiligne.
PCT/EP2009/052050 2008-02-25 2009-02-20 Pistolet à pulvériser WO2009106487A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN200980106245.XA CN101952043B (zh) 2008-02-25 2009-02-20 喷枪
RU2010139290/05A RU2495727C2 (ru) 2008-02-25 2009-02-20 Пистолет-распылитель
EP09715002A EP2257383A1 (fr) 2008-02-25 2009-02-20 Pistolet à pulvériser

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008000399.9 2008-02-25
DE102008000399A DE102008000399B4 (de) 2008-02-25 2008-02-25 Spritzpistole

Publications (1)

Publication Number Publication Date
WO2009106487A1 true WO2009106487A1 (fr) 2009-09-03

Family

ID=40679574

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/052050 WO2009106487A1 (fr) 2008-02-25 2009-02-20 Pistolet à pulvériser

Country Status (5)

Country Link
EP (1) EP2257383A1 (fr)
CN (1) CN101952043B (fr)
DE (1) DE102008000399B4 (fr)
RU (1) RU2495727C2 (fr)
WO (1) WO2009106487A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11376620B2 (en) 2019-11-13 2022-07-05 Techtronic Cordless Gp Pressure washer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013139407A1 (fr) * 2012-03-21 2013-09-26 Husqvarna Ab Appareil d'arrosage comprenant un dispositif de mesure du débit
CN108523216B (zh) * 2018-04-19 2020-08-25 云南巴菰生物科技有限公司 一种用于降低烟气温度低吸阻聚乳酸丝束滤棒的制备方法
RU2712570C1 (ru) * 2019-04-09 2020-01-29 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) Распылительная система

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US5366158A (en) 1993-09-29 1994-11-22 Badger Air Brush Co. Versatile airbrush
US6860438B1 (en) 2004-04-06 2005-03-01 Tiao-Hsiang Huang Spray gun

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CA2039681C (fr) * 1990-04-05 2001-02-20 Richard J. Hamilton Assemblage d'ajutage a desaccouplement rapide
US5772116A (en) * 1993-12-02 1998-06-30 Holt; Earl R. Recirculating paint system having an improved spray gun
DE19507365C2 (de) * 1995-03-03 2000-02-24 Lechler Gmbh & Co Kg Vorrichtung zum Versprühen eines Zweistoffgemisches
US5727739A (en) * 1995-03-03 1998-03-17 Spraying Systems Co. Nozzle with quick disconnect spray tip
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GB0122208D0 (en) * 2001-09-14 2001-11-07 Vincent Ltd G Spray gun
CN2560438Y (zh) * 2002-05-27 2003-07-16 吴宝亮 便于拆洗的电喷枪
DE10226792B4 (de) * 2002-06-15 2004-10-28 J. Wagner Gmbh Spritzpistole
DE102004027789B4 (de) * 2003-06-11 2011-12-08 Martin Ruda Austauschbare Lackiermittelleiteinrichtung und Spritzpistole
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Publication number Priority date Publication date Assignee Title
US5366158A (en) 1993-09-29 1994-11-22 Badger Air Brush Co. Versatile airbrush
US6860438B1 (en) 2004-04-06 2005-03-01 Tiao-Hsiang Huang Spray gun

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11376620B2 (en) 2019-11-13 2022-07-05 Techtronic Cordless Gp Pressure washer

Also Published As

Publication number Publication date
RU2495727C2 (ru) 2013-10-20
EP2257383A1 (fr) 2010-12-08
DE102008000399B4 (de) 2011-08-25
RU2010139290A (ru) 2012-04-10
CN101952043A (zh) 2011-01-19
CN101952043B (zh) 2014-05-14
DE102008000399A1 (de) 2009-09-03

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