Paint gun

Abstract

The invention relates to a paint gun (100), comprising: a trigger element (30) with a bolt (20) connected to the trigger element (30), said bolt having a bolt outer face (28); a spray gun body (10) having a bore (18) with a first opening (18a) for receiving the bolt (20) of the trigger element (30) and latching geometry (15); wherein the trigger element (30) is configured to be arranged on one side of the paint gun body (10); wherein the bolt (20) is designed for fastening the trigger element (30) to the paint gun body (10); wherein the bolt (20) has a first bolt end (21) and a second bolt end (22), wherein the first bolt end (21) is designed for fastening to the trigger element (30), wherein the bolt (20), in particular the second bolt end (22), has a latching mating geometry (25) which is configured to interact with the latching geometry (15) on the paint gun body (10) such that the bore (18) and the bolt outer face (28) form a support, and the bolt (20) is rotationally and captively supported in the bore (18).

Description

[0001] paint spray gun

[0002] The invention relates to a paint spray gun, a use of an actuating bracket element in such a paint spray gun and an actuating bracket element for such a paint spray gun.

[0003] Paint spray guns are used to atomize flowable material and apply it to a surface. The material to be applied can be either liquid or powder. Among other features, paint spray guns feature a trigger for opening and closing a valve for a paint flow and / or an air flow. This trigger, also called the trigger element, can become heavily soiled during use, so it must be cleaned regularly. For cleaning purposes, it is advantageous if the trigger element can be removed from the paint spray gun.

[0004] In this context, it has now become apparent that there is a further need to provide a paint spray gun with a removable actuating bracket element, in particular there is a need to provide an efficient and cost-effective paint spray gun with a removable actuating bracket element.

[0005] These and other objects, which will be mentioned upon reading the following description or which may be recognized by a person skilled in the art, are achieved by the subject matter of the independent claims. The dependent claims develop the central idea of ​​the present invention in a particularly advantageous manner.

[0006] According to a first aspect of the present invention, a paint spray gun is provided, comprising: an actuating bracket element having a bolt connected to the actuating bracket element and having a bolt outer surface; a paint spray gun body having a bore with a first opening for receiving the bolt of the actuating bracket element and a locking geometry; wherein the actuating bracket element is configured to be arranged on one side of the paint spray gun body; wherein the bolt is designed to fasten the actuating bracket element to the paint spray gun body;wherein the bolt has a first bolt end and a second bolt end, wherein the first bolt end is designed for attachment to the actuating bracket element, wherein the bolt, in particular the second bolt end, has a locking counter geometry which is designed to cooperate with the locking geometry on the paint spray gun body such that the bore and the bolt outer surface form a bearing, and the bolt is rotatably and captively mounted in the bore.;

[0007] The term "paint spray gun" refers in particular to a hand-held paint application unit with an actuating bracket element for actuating a valve designed to release a paint stream. The terms "paint gun", "paint nozzle" or other designations containing the terms "paint" or "color" are not to be understood as restricting these materials. The paint spray gun according to the invention can be used to spray, for example, paint, adhesive or varnish, in particular base and clear coat, both solvent-based and water-based, as well as liquids for the food industry, wood preservatives or other liquids. Hand-held paint guns are primarily used by tradespeople, especially painters, carpenters and varnishers. However, it is certainly conceivable to integrate a hand-held spray gun into a painting robot or a painting machine.In particular, a paint gun according to the invention designed as a hand-held paint gun can be designed as a gravity-feed gun with a paint cup arranged above the paint gun body, from which the material to be sprayed flows into and through the paint channels essentially by gravity and by negative pressure at the front end of the paint nozzle. However, the paint gun according to the invention can also be a side-feed gun, in which the paint cup is arranged laterally on the paint gun body, and in which the material is also fed to the gun by gravity and by negative pressure at the front end of the material nozzle. However, the paint gun according to the invention can also be designed as a suction or suspended cup gun with a paint cup arranged below the paint gun body, from which the material to be sprayed is sucked out of the cup essentially by negative pressure.Furthermore, it can be designed as a pressurized cup gun, in which the cup is arranged below, above or to the side of the paint spray gun body and is pressurized, whereupon the material to be sprayed is forced out of the cup. Furthermore, it can be a pressure-feed gun, in which the material to be sprayed is fed to the spray gun via a hose from a paint container or via a pump. The paint spray gun according to the invention can be a low-pressure gun, in particular an HVLP gun, with an internal nozzle pressure of a maximum of 10 psi or 0.7 bar, whereby transfer rates of more than 65% are achieved. However, it can also be a compliant gun, which has an internal nozzle pressure of more than 10 psi or 0.7 bar, but likewise achieves a transfer rate of more than 65%. It can be a compressed air atomizing paint gun.It can be an air-assisted spray gun. It can be an airless spray gun. It can be a powder coating gun. It can be an electrostatic spray gun. It can be a rotary atomizer. But it can also be a different type of spray gun.

[0008] The term "spray gun body" refers in particular to a housing designed to arrange the components of a spray gun relative to one another and to at least partially enclose them. The spray gun body in particular has a handle. The spray gun can have a compressed air connection, a paint needle, a trigger for opening an air valve and for moving the paint needle out of the outlet opening of the paint nozzle, a round-to-wide jet regulator for adjusting the ratio of atomizing air and horn air to shape the paint jet, an air micrometer for adjusting the spray pressure, a material flow regulator for adjusting the maximum material flow rate, a material connection, paint channels for directing the material to be sprayed from a material inlet to the material outlet opening, a suspension hook, and / or an analog or digital pressure measuring device.However, it can also include other components from the prior art. In or on the spray gun body, a needle valve for applying paint and, if applicable, an air valve for releasing compressed air, a compressed air connection, and a paint connection are arranged. Furthermore, a paint nozzle body is arranged on the spray gun body.

[0009] The term "actuating bracket element" refers in particular to a structural element that is designed to be rotatably mounted on the paint spray gun body and to open or close the needle valve and, if applicable, an air valve by pressing the actuating bracket element, so that paint and / or compressed air flow through the paint nozzle body. The actuating bracket element is preferably designed as a single-armed actuating bracket element. The actuating bracket element preferably has an actuating bracket element body with a finger rest, with a fastening arm extending from only one side of the actuating bracket element body. This fastening arm is attached to one side of the paint spray gun body.However, the actuating bracket element can also be designed as a two-armed actuating bracket element, in which two fastening arms extend from two opposite sides of the actuating bracket element body, with both fastening arms being attached to opposite sides of the spray gun body. At least one arm can be detachably arranged on the actuating bracket element body.

[0010] The term “bore” means in particular a cylindrically shaped cavity with at least one opening. The bore can comprise a blind hole and a through hole. If a sleeve, in particular a sliding sleeve, or a bushing, in particular a sliding bushing, is inserted, in particular pressed into the bore, at least an area or part of this sleeve or bushing, in particular its inner side and / or end face, can be understood as a bore. A sleeve, in particular a sliding sleeve, or a bushing, in particular a sliding bushing, inserted, in particular pressed into the bore can be seen as part of the spray gun body. This means in particular that the spray gun can have an actuating bracket element with a bolt connected to the actuating bracket element and having a bolt outer surface, and a spray gun body with a bore, wherein a sleeve orBushing with a first opening for receiving the bolt of the actuating bracket element and a locking geometry is arranged, wherein the actuating bracket element is designed to be arranged on one side of the paint spray gun body, wherein the bolt is designed to fasten the actuating bracket element to the paint spray gun body, wherein the bolt has a first bolt end and a second bolt end, wherein the first bolt end is designed for fastening to the actuating bracket element, wherein the bolt, in particular the second bolt end, has a locking counter geometry which is designed to interact with the locking geometry on the paint spray gun body in such a way that the sleeve or bushing and the bolt outer surface form a bearing, and the bolt is rotatably and captively mounted in the sleeve or bushing.

[0011] The term "locking geometry" refers in particular to a structural element configured to interact with another structural element in such a way as to provide a locking connection between the two structural elements. The locking geometry of the spray gun body can, for example, be a groove within a bore or the end face of a bore. The locking geometry of the spray gun body can be formed integrally with the spray gun body or be designed as a separate part (for example, as an insert, press-fit part, bushing, and / or retaining ring).

[0012] The term “locking counter geometry” refers in particular to a structural element that is designed to interact with another structural element, here the locking geometry, in such a way that a locking connection is provided between the two structural elements. The locking counter geometry on the bolt can comprise a projection or a groove. The locking counter geometry can be designed as a single piece integral with the bolt or as a separate part (for example as an insert, press-in part, bushing and / or retaining ring). The locking counter geometry is preferably arranged in the region of the second end of the bolt, i.e. on the side of the bolt facing away from the actuating bracket element. The locking counter geometry can be arranged in the region of the first end of the bolt, i.e. on the side of the bolt facing the actuating bracket element. The locking counter geometry can be arranged in a central region of the bolt.

[0013] The term "bolt" refers in particular to a structural element configured to provide at least part of a mounting for the actuating bracket element in the spray gun body. The bolt can be arranged integrally on the actuating bracket element. The bolt can be screwed, glued, inserted, pressed, welded, or otherwise connected to the actuating bracket element.

[0014] The term “captive” means in particular that the bolt will not fall out of the bearing on its own without further action.

[0015] The present invention is based on the finding that actuating bracket elements must be regularly removed from and reassembled onto a paint spray gun body. These processes are necessary, for example, to clean the actuating bracket element or to attach a different actuating bracket element, for example with a different ergonomic design, to a paint spray gun, or when the actuating bracket element has an additional purpose, e.g., to be usable as a tool, in particular for assembling and / or disassembling the paint nozzle body. These assembly and disassembly processes must be able to be carried out as simply, quickly, and reproducibly as possible. The invention achieves this object by designing the bolt of the actuating bracket element with a counter-locking geometry and the paint spray gun body of the paint gun with a corresponding locking geometry.This allows the user to detach the actuating lever element from the gun body without tools and attach the actuating lever element to the gun body without tools. The locking mechanism allows the actuating lever element to be locked in place within the spray gun body. This has a beneficial effect on the efficiency of changing the actuating lever element and the gun body.

[0016] In one embodiment, the locking counter geometry on the bolt has a spring ring and a groove, in particular a circumferential groove, on the bolt for receiving a spring ring, wherein the spring ring is arranged in the groove.

[0017] The term "spring ring" refers specifically to an elastically deformable ring. The ring is made of metal, for example. The ring can be closed or open.

[0018] In this way, the spring ring can change its shape by applying an external force, allowing the locking connection with the pistol body to be released. The spring ring is guided in a groove, particularly a circumferential groove, on the bolt, thus securing it against translational displacement along the bolt's longitudinal axis. The groove is located, in particular, at one end of the bolt. In particular, the spring ring is open.

[0019] The ring preferably has a first diameter and a second diameter arranged perpendicular to the first diameter, the first diameter being smaller than the second diameter. The ring is preferably open, in particular open and not circular, in particular it has the shape of a “C” stretched upwards and downwards. The two ends of the C-shaped ring preferably rest on the bolt, in particular the two ends of the C-shaped ring and a region of the ring opposite the opening of the ring rest on the bolt. In particular, the ring is supported by three points on the bolt. The ring is widened preferably orthogonally to the axis that runs through the center of the opening of the ring and through the region of the ring opposite the opening of the ring. In particular, the C formed by the C-shaped ring is widened at the top and bottom. In the widened regions, the ring does not rest on the bolt.Preferably, the widened areas are compressed when the bolt is inserted into the bore and widened again when the spring washer exits into the locking geometry. Preferably, the open arms of the open ring move toward each other when the bolt is inserted into the bore and move away from each other again when the spring washer exits into the locking geometry.

[0020] In one embodiment, the spring ring rests at three points distributed over a circumference of the groove and is shaped in such a way that the spring ring is compressed when the bolt is inserted into the bore and expands again when the spring ring exits into the locking geometry.

[0021] This eliminates the need to remove the spring washer to install the actuating bracket element on the spray gun body. The spring washer elastically deforms when inserted (i.e., pulled or compressed) into the bore and unfolds again as soon as it exits the bore. This creates an undercut between the spring washer and one end of the bore in the spray gun body. This undercut ensures captive mounting. The elastic deformation of the spring washer enables a snap-in connection. This is made possible by the three-point support of the spring washer in the groove. This positively impacts the efficiency of assembly.

[0022] In one embodiment, the spring ring is shaped in such a way that when the bolt is pulled out of the bore, it contracts and remains in the groove.

[0023] In this way, the spring washer is not stripped from the groove when the bolt is pulled out of the hole. Instead, upon contact with the locking geometry (e.g., the face of the hole) and the force exerted on the spring washer during withdrawal, it deforms (i.e., compresses) such that it is pushed into the groove, releasing the locking connection. In other words, the spring washer falls off the bolt when the bolt is pulled out of the hole. This is made possible by the three-point support of the spring washer in the groove. This has a positive effect on the efficiency of disassembly.

[0024] In one embodiment, the spring ring projects radially beyond the bolt outer surface in a widened state in at least two regions, and wherein the at least two regions are spaced apart from one another by a distance that is greater than a diameter of the bore.

[0025] The term expanded state means in particular a non-compressed state.

[0026] In this way, the radial projection in at least two areas that are larger than the diameter of the bore provides an undercut that enables captive storage.

[0027] In one embodiment, the at least two regions are arranged opposite one another on the spring ring.

[0028] In this way, the opposing arrangement improves the assembly and disassembly behavior of the bolt.

[0029] In one embodiment, the bore is a blind hole, wherein the locking geometry is formed inside the paint spray gun body, in particular inside the bore. The locking geometry is designed as a groove, for example. The locking geometry can be realized, for example, using a plastic insert that is inserted, pressed, glued and / or screwed into the blind hole in the gun body. The plastic insert then has, for example, a groove or an undercut. The locking geometry can be realized, for example, using a metal insert, in particular made of stainless steel, in particular chromium-nickel steel, which is inserted, pressed, glued and / or screwed into the blind hole in the gun body. The plastic insert then has, for example, a groove or an undercut.

[0030] In one embodiment, the bore is a through bore having the first opening and a second opening, and the bore has chamfers at both openings, the chamfer at the first opening of the bore being larger than the second chamfer at a second opening of the bore.

[0031] In this way, the first, larger chamfer improves assembly. The second, smaller chamfer has a positive effect on the captive bearing. In one embodiment, the bolt is secured at its first end by means of a screw connection in or on the actuating bracket element.

[0032] In one embodiment, the bolt has a sliding surface on the outer surface for rotatably supporting the actuating bracket element in the bore.

[0033] In this way, the bearing behavior of the bolt is improved. Alternatively or additionally, the bore can have a sliding bushing. The following applies to all sleeves or bushings mentioned in the present application: The sliding bushing can be made of plastic, for example. The sliding bushing can be made of metal, in particular of stainless steel, in particular of chromium-nickel steel. In all cases, the sliding bushing can be inserted, pressed, glued and / or screwed into the gun body. In all cases, the sliding bushing can have a constant inner diameter over its length. In all cases, the sliding bushing can have an area with a smaller and an area with a larger inner diameter.In all cases, the sliding bushing can have regions with different outer diameters; in particular, it can have a larger outer diameter on the end facing the actuating bracket element than in a region facing away from the actuating bracket element. In all cases, the sliding bushing can have a groove or an undercut, for example. In all cases, the sliding bushing can have a chamfer, in particular at its end facing away from the actuating bracket element and / or at its end facing the actuating element. A chamfer always makes it easier to insert and / or press the bolt with retaining ring or the actuating bracket element with bolt with retaining ring out of or into the bore, or out of or into the bore with the sliding bushing arranged therein.

[0034] A further aspect relates to the use of an actuating bracket element in a paint spray gun described above.

[0035] A further aspect relates to an actuating bracket element for a paint spray gun, comprising an actuating bracket element with a bolt connected to the actuating bracket element and having a bolt outer surface; wherein the actuating bracket element is configured to be arranged on one side of a paint spray gun body; wherein the bolt is designed to fasten the actuating bracket element to the paint spray gun body; wherein the bolt has a first bolt end and a second bolt end, wherein the first bolt end is designed to be fastened to the actuating bracket element, wherein the bolt, in particular the second bolt end, has a locking counter geometry which is configured to cooperate with a locking geometry on the paint spray gun body such that a bore in the paint spray gun body and the bolt outer surface form a bearing, and the bolt is rotatably and captively mounted in the bore.

[0036] The actuating bracket element is preferably designed as a single-arm actuating bracket element. The actuating bracket element preferably has an actuating bracket element body with a finger rest, with a fastening arm extending from only one side of the actuating bracket element body. This fastening arm is attached to one side of the spray gun body. In conventional two-arm actuating bracket elements, however, two fastening arms extend from two opposite sides of the actuating bracket element body, with both fastening arms being attached to opposite sides of the spray gun body.

[0037] In one embodiment, the locking counter geometry on the bolt has a spring ring and a groove, in particular a circumferential groove, on the bolt for receiving a spring ring, wherein the spring ring is arranged in the groove.

[0038] In one embodiment, the spring ring rests at three points distributed over a circumference of the groove and is shaped in such a way that the spring ring contracts when the bolt is pushed into the bore and expands again when the spring ring exits into the locking geometry.

[0039] In one embodiment, the bolt is fastened at its first end in the actuating bracket element by means of a screw connection.

[0040] The features described above, including those from different embodiments, can also be combined with each other, resulting in synergistic interactions that go beyond the sum of the individual effects.

[0041] The invention is explained below using exemplary embodiments, which are described with reference to the following figures:

[0042] Figure 1 shows part of an actuating bracket element;

[0043] Figure 2 shows a spray gun in a first view; Figure 3 shows a spray gun in a second view;

[0044] Figure 4 shows a schematic view of the spring ring in relation to the bore and the

[0045] Groove and

[0046] Figure 5 shows a sectional view of the connection between the actuating bracket element and the spray gun.

[0047] Exemplary embodiments are described and explained below with reference to the figures listed above. Like reference symbols or analogous reference symbol structures refer to analogous or interacting components.

[0048] Figure 1 shows part of an actuating bracket element 30. By actuating the actuating bracket element 30 in a dosing trigger direction, a displaceable dosing device within a paint spray gun body 10 is deflected along a movement axis of the dosing device and a dosing needle is released from its valve seat in a material nozzle, so that the material to be applied is dispensed from the material nozzle or paint nozzle in the direction of a paint dispensing direction. The paint spray gun can also be designed such that the actuating bracket element opens an air valve upon actuation, whereby atomizing air for atomizing the material to be sprayed and / or shaping air for shaping the spray jet flows out of an air cap of the paint gun. The actuating bracket element 30 has a bolt 20 with a bolt outer surface 28. The bolt 20 is screwed to the actuating bracket element 30 at its first end 21.Alternatively, the bolt 20 could also be glued or mounted with an interference fit. Alternatively, the bolt 20 and the actuating bracket element 30 could be manufactured as a single piece. The bolt 20 can be made of metal and / or plastic. The actuating bracket element 30 can be made of metal and / or plastic. The actuating bracket element 30 is made of PA66, for example. The bolt outer surface 28 in this case has a sliding surface for rotatably supporting the actuating bracket element 30 in a bore of the paint gun body (not shown). The second bolt end 22 of the bolt 20 has a locking counter geometry 25. The locking counter geometry 25 is designed to interact with a locking geometry 15 of the paint spray gun body (not shown) in such a way that the bore of the paint spray gun body (not shown) and the bolt outer surface 28 form a bearing, so that the bolt 20 is rotatably and captively mounted in the bore (not shown).The locking counter geometry 25 in this case has a groove 27 and a spring ring 26. The spring ring 26 is arranged in the groove 27 such that it cannot be displaced in the axial direction of the bolt 20. The spring ring 26 is designed to be closed in this case. The spring ring 26 is shaped such that it rests in the groove 27 at three points (not shown). The spring ring 26 has at least two regions that, in the non-compressed state, protrude beyond the bolt outer surface 28, wherein the distance between the two regions is greater than a diameter of the bore in the paint spray gun body 10.

[0049] Figure 2 shows a first view of a paint spray gun 100. The paint spray gun 100 has a paint spray gun body 110 and an actuating bracket element 130. In this case, the actuating bracket element 130 is arranged on one side of the paint spray gun body 110. The paint spray gun body 110 has a bore designed to receive a bolt of the actuating bracket element 130. The bore is designed as a through-bore. The bore has chamfers at each of its openings. The chamfers each have an angle of 45° or 60°, for example. The chamfers can have different angles, for example. The larger chamfer can have an angle of 60°, for example, and the smaller chamfer an angle of 45°. The larger chamfer at the first opening has a greater width than the smaller chamfer at the second opening. The larger chamfer with the greater width enables better insertion of the bolt into the bore.The smaller bevel with the smaller width enables a better locking effect against pulling out.

[0050] The paint spray gun 100 has an air supply 101, which, depending on the type of paint spray gun, can be a compressed air supply. Furthermore, the paint spray gun 100 has a material or paint supply 102, through which the material to be applied is supplied. It should be understood that the material can also be supplied at other locations, depending on the design principle and field of application of the paint spray gun. The embodiment shown here further has a so-called material quantity regulator 103, by means of which the rear stop for the paint needle and thus the maximum opening degree of the paint nozzle outlet and thus the maximum amount of escaping material can be defined. A so-called air micrometer, by means of which the supplied air quantity can be regulated or metered, is preferably located on the air supply 101.The embodiment shown here further includes a so-called air cap 104, which has outlet openings for the atomizing air and the shaping air. The user can meter the amount of material dispensed during a material application via the actuating bracket element 130, which is mounted on the paint gun body 110 so that it can rotate about a rotation axis. By actuating the actuating bracket element 130 in a metering trigger direction, a displaceable metering device within the paint gun body 110 is deflected along a movement axis of the metering device, and a metering needle is released from its valve seat in the air cap 104, so that the material to be applied is dispensed from the material nozzle or paint nozzle in a paint dispensing direction.The paint spray gun 100 is configured in this case such that the actuating bracket element 130 opens an air valve upon actuation, whereby atomizing air for atomizing the material to be sprayed and / or shaping air for shaping the spray jet flows out of the air cap 104 of the paint spray gun 100. Figure 2 also shows the mounting arm of the single-armed actuating bracket element 130.

[0051] Figure 3 shows a paint spray gun 200 in a second view, which is opposite the first view of Figure 2. The bolt 230 protrudes from the bore 218 of the paint spray gun body 210. The paint spray gun body 210 has a locking geometry 215, which in this case is designed as the end face of the bore 218. This side of the paint spray gun body 210 is not encompassed by a fastening arm of the actuating bracket element 130. Of course, one fastening arm of the actuating bracket element 130 can also be located on the other side of the paint spray gun body 210. Preferably, however, it is located on the right side of the paint spray gun body 210, since the actuating bracket element 130 is usually actuated with the user's right hand, whereby the user exerts not only an intended force against the spraying direction, ie towards himself, but also a rather unwanted force to the left of the user on the actuating bracket element 130.The connection between the actuating bracket element 130 and the paint gun body 210 can better counteract this force if the fastening arm of the actuating bracket element 130 is arranged on the right side of the paint gun body 210.

[0052] Figure 4 shows a schematic view of the spring ring 403 in relation to the bore 402 and the groove 407. The groove 407 has an inner diameter 400 and an outer diameter 401. The spring ring 403 is mounted at three points 404, 405, and 406 on the inner surface of the groove 407. The three-point mounting shown makes it possible for the spring ring 403 to be mounted so stably in the groove 407 that the spring ring 403 is compressed when the bolt is pulled out of the paint gun body without being pulled down by the bolt. Alternatively, the same effect can also be achieved using a four-point mounting. For this purpose, the spring ring 403 is pre-shaped accordingly. In the relaxed or expanded state, the spring ring 403 has two areas 408 and 409 that protrude beyond the outer diameter 401. The outer diameter 401 corresponds approximately to the diameter of the bore of the spray gun body.The diameter 410 corresponds to the diameter of the chamfer of the bore 402. The bore 402 has a diameter that is larger than the outer diameter of the groove 407 or the diameter of the bolt. The diameter of the bore 402 is smaller than the diameter of the chamfer 410. The diameter of the bore corresponds, for example, to the diameter of the bolt plus a clearance. The areas 408 and 409 protrude beyond the bore diameter and end, for example, in the area of ​​the chamfer. If a sleeve or bushing is present, in particular a sliding bushing, the above statements regarding the bore apply analogously to the sleeve or bushing. The sleeve is to be regarded as a bore. The maxima of the areas 408 and 409 can also lie on the horizontal center line.

[0053] Figure 5 shows a sectional view of the connection between the actuating bracket element 30 and the paint spray gun 100 or the paint spray gun body 110. A sleeve, in particular a sliding sleeve, or a bushing, in particular a sliding bushing 24, is arranged, in particular pressed, in the paint spray gun body 110, in particular in the bore for receiving the actuating bracket element 30 or the fastening bolt 20. The actuating bracket element 30 and the fastening bolt 20 are screwed together in a rotationally secure manner by means of a fixing screw 30a. The fastening bolt 20 with the actuating bracket element 30 arranged thereon is inserted into the bore in the paint spray gun body 110 with the sliding bushing 24 arranged therein in such a way that the spring ring 26 is compressed when the bolt 20 is inserted into the bore or the sliding bushing 24 and expands again when the spring ring 26 exits into the locking geometry 15.In Figure 5, the spring ring 26 lies near the chamfer of the sliding bushing 24 or against it. In the present case, the spring ring 26 lies in a groove 27, in particular a circumferential groove 27, in the fastening bolt 20. The spring ring 26 is slightly raised from the base of the groove 27, since in this case these are the widened areas of the spring ring 26, in particular the C-shaped spring ring 26. In the present case, a sealing element, in particular a sealing ring 21a, is arranged between the sliding bushing 24 and the fastening bolt 20. When the actuating bracket element 30 is actuated, the fastening bolt 20 moves in the sliding bushing 24 in the direction of rotation around the pivot point, in particular around the center point of the sliding bushing 24 and / or the fastening bolt 20. In the axial direction, the actuating bracket element 30 is fixed in the paint gun body 110 by the locking connection. The fastening bolt 20 is designed here as an internally hollow sleeve.At its end facing away from the actuating bracket element 30, the fastening bolt 20 has a closure plug 29. The closure plug 29 has at least one closure plug bulge 29a, which can be configured as three or more webs distributed over the circumference of the closure plug 29. By means of this closure plug bulge 29a, a press fit is created between the closure plug 29 and the bore 18 or sliding bushing 24. Reference numeral.

[0054] 10, 110, 210 spray gun bodies

[0055] 15, 215 Locking geometry on the spray gun body

[0056] 18, 218, 402 bore

[0057] 18a first opening of the borehole

[0058] 18b second opening of the bore

[0059] 19a Chamfer at the first opening of the bore

[0060] 19b Chamfer at the second opening of the bore

[0061] 20, 230 fastening bolts

[0062] 21 first end of the fastening bolt

[0063] 21a Sealing ring

[0064] 22 second end of the fastening bolt

[0065] 24 sliding bushing

[0066] 25 Locking counter geometry on the bolt

[0067] 26, 403 spring ring

[0068] 27 Groove on the locking counter geometry for receiving the spring ring

[0069] 28 Bolt outer surface

[0070] 29 sealing plugs

[0071] 29a Plug recess

[0072] 30, 130 operating bracket element

[0073] 30a fixing screw

[0074] 100, 200 paint spray gun

[0075] 101 Air supply

[0076] 102 Paint supply

[0077] 103 Material quantity regulation

[0078] 104 Air cap

[0079] 400 inner diameter groove

[0080] 401 Outer diameter groove

[0081] 404, 405, 406 points circulation

[0082] 407 groove

[0083] 408, 409 radially projecting areas of the spring ring

[0084] 410 outer diameter chamfer

Claims

Claims 1. Paint spray gun (100), comprising: Actuating bracket element (30) with a bolt (20) connected to the actuating bracket element (30) and having a bolt outer surface (28); Paint gun body (10) with a bore (18) with a first opening (18a) for receiving the bolt (20) of the actuating bracket element (30) and a locking geometry (15); wherein the actuating bracket element (30) is designed to be arranged on one side of the paint gun body (10); wherein the bolt (20) is designed to fasten the actuating bracket element (30) to the paint gun body (10); wherein the bolt (20) has a first bolt end (21) and a second bolt end (22), wherein the first bolt end (21) is designed for attachment to the actuating bracket element (30), wherein the bolt (20), in particular the second bolt end (22), has a locking counter geometry (25) which is designed to cooperate with the locking geometry (15) on the paint spray gun body (10) in such a way that the bore (18) and the bolt outer surface (28) form a bearing, and the bolt (20) is rotatably and captively mounted in the bore (18).

2. Paint spray gun (100) according to claim 1, wherein the locking counter geometry (25) on the bolt (20) has a spring ring (26) and a groove (27) on the bolt (20) for receiving a spring ring (26), wherein the spring ring (26) is arranged in the groove (27).

3. Paint spray gun (100) according to claim 2, wherein the spring ring (26) rests at three points distributed over a circumference of the groove (27) and is shaped such that the spring ring (26) is compressed when the bolt (20) is pushed into the bore (18) and widens again when the spring ring (26) exits into the locking geometry (15).

4. Paint spray gun (100) according to one of claims 2 and 3, wherein the spring ring (26) is shaped such that it contracts when the bolt (20) is pulled out of the bore (18) and remains in the groove (27).

5. Paint spray gun (100) according to one of claims 2 to 4, wherein the spring ring (403) projects radially beyond the bolt outer surface (28) in a widened state in at least two areas (408, 409), and wherein the at least two areas (408, 409) have a have a distance from each other that is greater than a diameter of the bore (18).

6. Paint spray gun (100) according to claim 5, wherein the at least two regions (408, 409) are arranged opposite one another on the spring ring (403).

7. Paint spray gun (100) according to one of the preceding claims, wherein the bore (18) is a blind hole, wherein the locking geometry (15) is formed in the interior of the paint spray gun body (10).

8. Paint spray gun (100) according to one of claims 1 to 6, wherein the bore (18) is a through-bore with the first opening (18a) and a second opening (18b) and has chamfers (19a, 19b) at both openings (18a, 18b), wherein the chamfer (19a) at the first opening (18a) of the bore (18) is larger than the second chamfer (19b) at a second opening (18b) of the bore (18).

9. Paint spray gun (100) according to one of the preceding claims, wherein the bolt (20) is fastened at its first end (21) by means of a screw connection in or on the actuating bracket element (30).

10. Paint spray gun (100) according to one of the preceding claims, wherein the bolt (20) has a sliding surface on the outer surface for rotatably supporting the actuating lever element (30) in the bore (18).

11. Use of an actuating bracket element in a paint spray gun according to claims 1 to 10.

12. Actuating bracket element (30) for a paint spray gun (100) according to one of claims 1 to 10, comprehensive Actuating bracket element (30) with a bolt (20) connected to the actuating bracket element (30) and having a bolt outer surface (28); wherein the bolt (20) has a first bolt end (21) and a second bolt end (22), wherein the first bolt end (21) is designed for fastening to the actuating bracket element (30), wherein the bolt (20), in particular the second bolt end (22), has a locking counter geometry (25) which is designed to cooperate with a locking geometry (15) on a paint spray gun body (10) in such a way that a bore (18) of the paint spray gun body (10) and the bolt outer surface (28) form a bearing, and the Bolt (20) is rotatably and securely mounted in the bore (18).

13. Actuating bracket element (30) according to claim 12, wherein the locking counter geometry (25) on the bolt (20) has a spring ring (26) and a groove (27) on the bolt for receiving a spring ring (26), wherein the spring ring (26) is arranged in the groove (27).

14. Actuating bracket element (30) according to claim 13, wherein the spring ring (26) rests at three points distributed over a circumference of the groove (27) and is shaped such that the spring ring (26) contracts when the bolt (20) is pushed into the bore (18) and expands again when the spring ring (26) exits into the locking geometry (15).

15. Actuating bracket element (30) according to one of claims 12 to 14, wherein the bolt (20) is fastened at its first end (21) by means of a screw connection in the actuating bracket element (30).

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