Paint gun and operating lever assembly

Abstract

The invention relates to a paint spray gun (100, 200) comprising: an actuating lever element (30, 130) with a bolt (20, 230) arranged on the actuating lever element (30, 130) and having a bolt outer surface (28); a paint spray gun body (110, 210) with a bore (18, 218) having a first opening (18a) for receiving the bolt (20, 230) of the actuating lever element (30, 130) and a detent geometry (15, 215); wherein the bolt (20, 230) is designed for fastening the actuating lever element (30, 130) to the paint spray gun body (110, 210);wherein the bolt (20, 230) has a first bolt end (21) and a second bolt end (22), wherein the first bolt end (21) is connected to the actuating lever element (30, 130), wherein the bolt (20, 230), in particular the second bolt end (22), has a detent geometry (25) which is configured to interact with the detent geometry (15, 215) on the paint gun body (110, 210) such that the bore (18, 218) and the bolt outer surface (28) form a bearing, and the bolt (20, 230) is rotatably and captive mounted in the bore (18, 218), wherein the detent geometry (25) has at least one detent lug integrally connected with at least a part of the bolt (20, 230), in particular an integrally connected with the second bolt end (22). (32) shows;

Description

[0001] The invention relates to a paint gun, the use of an actuating lever element in such a paint gun, and an actuating lever arrangement for a paint gun.

[0002] Spray guns are used to atomize and apply flowable material to a surface. The material to be applied can be either liquid or powder. Spray guns feature, among other things, a trigger lever for opening and closing a valve for a flow of paint and / or air. This trigger lever, also called the operating lever or operating lever element, becomes heavily soiled during operation and therefore requires regular cleaning. For cleaning purposes, it is advantageous if the operating lever element can be removed from the spray gun.

[0003] In this context, it has now become apparent that there is a further need to provide a paint gun with a removable operating lever element, in particular a need to provide an efficient and cost-effective paint gun with a removable operating lever element.

[0004] These and other problems, which will be mentioned in the following description or which may be recognized by a person skilled in the art, are solved by the subject matter of the independent claims. The dependent claims further develop the central idea of ​​the present invention in a particularly advantageous manner.

[0005] According to a first aspect of the present invention, a paint gun is provided comprising: an actuating lever element with a bolt arranged on the actuating lever element having a bolt outer surface; a paint gun body with a bore having a first opening for receiving the bolt of the actuating lever element and a detent geometry; wherein the bolt is configured for fastening the actuating lever element to the paint gun body;wherein the bolt has a first bolt end and a second bolt end, wherein the first bolt end is connected to the actuating lever element, wherein the bolt, in particular the second bolt end, has a detent geometry which is configured to interact with the detent geometry on the paint gun body in such a way that the bore and the outer surface of the bolt form a bearing, and the bolt is rotatably and securely mounted in the bore, wherein the detent geometry has at least one detent lug integrally connected with at least one part of the bolt, in particular an integrally connected with the second bolt end.

[0006] The term "spray gun" refers in particular to a hand-held paint application unit with an actuating lever for operating a valve designed to release a flow of paint. The terms "spray gun," "paint nozzle," or other designations containing the terms "paint" or "paint" are not to be understood as restricting this to these materials. The spray gun according to the invention can be used, for example, to spray paint, adhesive, or varnish, in particular base coat and clear coat, both solvent-based and water-based, as well as liquids for the food industry, wood preservatives, or other liquids. Hand-held spray guns are primarily used by tradespeople, especially painters, carpenters, and varnishers. However, it is also conceivable to integrate a hand-held spray gun into a painting robot or a painting machine.In particular, a handheld spray gun according to the invention can be designed as a gravity-feed spray gun with a paint cup arranged above the spray 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 spray gun according to the invention can also be a side-feed spray gun, in which the paint cup is arranged laterally on the spray gun body, and in which the material is also supplied to the gun by gravity and by negative pressure at the front end of the material nozzle. The spray gun according to the invention can also be designed as a suction or hanging-feed spray gun with a paint cup arranged below the spray gun body, from which the material to be sprayed is essentially drawn out of the cup by negative pressure.Furthermore, it can be designed as a pressure cup gun, in which the cup is arranged below, above, or to the side of the spray gun body and is pressurized, whereupon the material to be sprayed is forced out of the cup. It can also be a tank gun, in which the material to be sprayed is supplied to the spray gun via a hose from a paint container or via a pump. The spray gun according to the invention can be a low-pressure gun, in particular an HVLP gun, with a nozzle internal pressure of a maximum of 10 psi or 0.7 bar, thereby achieving transfer rates of more than 65%. However, it can also be a compliant gun that has a nozzle internal pressure of more than 10 psi or 0.7 bar, but also achieves a transfer rate of more than 65%. It can be a compressed air atomizing spray gun.It could be an air-assisted spray gun. It could be an airless spray gun. It could be a powder coating spray gun. It could be an electrostatic spray gun. It could be a rotary atomizer. However, it could also be a different type of spray gun altogether.

[0007] The term "spray gun body" refers specifically to a housing designed to arrange and at least partially enclose the components of a spray gun. The spray gun body includes, in particular, a handle. The spray gun may have a compressed air connection, a paint needle, a trigger for opening an air valve and extending the paint needle from the outlet of the paint nozzle, a round / wide spray pattern regulator for adjusting the ratio of atomizing air to horn air to shape the paint spray, an air pressure gauge 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, a hanging hook, and / or an analog or digital pressure measuring device.However, it may also include other components from the prior art. In particular, a needle valve for applying the paint and, if applicable, an air valve for releasing compressed air, a compressed air connection, and a paint connection are arranged in or on the body of the paint gun. Furthermore, a paint nozzle body is arranged on the body of the paint gun.

[0008] The term "actuating lever element" refers in particular to a structural element designed to be rotatably mounted on the spray gun body and to open or close the needle valve and, if applicable, an air valve by pressing the actuating lever element, allowing paint and / or compressed air to flow through the spray nozzle body. The actuating lever element is preferably designed as a single-arm actuating lever element. The actuating lever element preferably has an actuating lever body with a finger rest, and a mounting arm extends from only one side of the actuating lever body. This mounting arm is attached to the spray gun body on one side.The actuating lever element can also be designed as a two-armed actuating lever element, in which two mounting arms extend from two opposite sides of the actuating lever element body, with both mounting arms being attached to opposite sides of the spray gun body. The actuating lever element is preferably arranged on at least one outer side of the spray gun body.

[0009] The term "bore" refers in particular to a cylindrically shaped cavity with at least one opening. The bore can comprise a blind hole or a through hole. If a sleeve, in particular a sliding sleeve, or bushing, in particular a sliding bushing, is inserted, in particular pressed into, the bore, at least a region or part of this sleeve or bushing, in particular its inner surface and / or end face, can be understood as a bore. A sleeve, in particular a sliding sleeve, or bushing, in particular a sliding bushing, inserted, in particular pressed into, the bore can be considered part of the spray gun body. The bore can comprise a sleeve, in particular a sliding sleeve, or bushing, in particular a sliding bushing.This means, in particular, that the spray gun can have an actuating lever element with a bolt arranged on the actuating lever element, having a bolt outer surface, and a spray gun body with a bore, wherein a sleeve or bushing with a first opening for receiving the bolt of the actuating lever element and a detent geometry is arranged in the bore, wherein the bolt is designed for fastening the actuating lever element to the spray gun body, wherein the bolt has a first bolt end and a second bolt end, wherein the first bolt end is connected to the actuating lever element, wherein the bolt, in particular the second bolt end, has a detent geometry which is configured to interact with the detent geometry on the 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 securely held in the sleeve or bushing.The bushing is mounted, the detent geometry comprising at least one detent lug integrally connected with at least one part of the bolt, in particular an integrally connected with the second bolt end. The bore can have a constant diameter. The bore can have several sections with different diameters. The sleeve or bushing can have a constant diameter. The sleeve or bushing can have several sections with different diameters.

[0010] The term "latching geometry" refers specifically to a structural element designed to interact with another structural element in such a way as to provide a latching connection between the two. The latching geometry of the spray gun body can, for example, be a groove within a bore. The latching geometry of the spray gun body can, for example, be an end face of a bore. The latching geometry of the spray gun body can be integrally formed with the spray gun body. The latching geometry of the spray gun body can also be designed as a separate part (for example, as an insert, press-fit part, sleeve, bushing, and / or retaining ring).

[0011] The term "latching geometry" refers in particular to a structural element designed to interact with another structural element, here the latching geometry, in such a way as to provide a latching connection between the two structural elements. Preferably, the latching geometry is arranged in the region of the second end of the bolt, i.e., on the side of the bolt facing away from the actuating lever element. The latching geometry can also be arranged in the region of the first end of the bolt, i.e., on the side of the bolt facing the actuating lever element. Alternatively, the latching geometry can be arranged in a central region of the bolt. The latching geometry has at least one latching lug integrally connected with at least a part of the bolt, in particular with the second end of the bolt. The at least one latching lug has, in particular, a stepped side.The at least one locking lug has, in particular, a ramp-shaped side. The at least one locking lug has, in particular, a stepped side and a ramp-shaped side axially opposite the stepped side. The at least one locking lug has, in particular, a stepped side facing the first end of the bolt and a ramp-shaped side facing away from the first end of the bolt and axially opposite the stepped side. The locking counter-geometry is, in particular, designed as a snap hook. The locking counter-geometry is, in particular, designed as a snap cylinder. The locking counter-geometry is, in particular, designed as a snap sleeve.

[0012] The term "bolt" refers in particular to a structural element designed to provide at least part of the bearing for the actuating lever element within the spray gun body. The bolt may be integrally attached to the actuating lever element. The bolt may be manufactured together with the actuating lever element, particularly in a single injection molding process. Specifically, the bolt and / or actuating lever element may be made of plastic. Specifically, the bolt and / or actuating lever element may be made of glass fiber reinforced plastic. Specifically, the bolt and / or actuating lever element may be made of carbon fiber reinforced plastic. The bolt may be screwed, glued, inserted, pressed, welded, or otherwise connected to the actuating lever element.In particular, the bolt has at least one region with a first diameter, in particular an outer diameter, and at least one region with a second diameter, in particular an outer diameter, wherein the first diameter is larger than the second diameter. In particular, the bolt has a circular cross-section. The bolt can be designed in multiple parts. A first part of the bolt can be connected to the actuating lever element, in particular integrally. A second part of the bolt can be connected to the first part of the bolt, in particular by screwing, gluing, inserting, pressing, welding, or otherwise connecting it. The at least one locking lug is integrally arranged on one part of the bolt, in particular on the second part of the bolt. Preferably, the actuating lever element, the bolt, and the at least one locking lug are integrally designed.Preferably, at least one locking lug at the second end of the bolt is integrally arranged on the bolt.

[0013] The term "loss-proof" means in particular that the bolt does not fall out of its storage on its own without any further intervention.

[0014] The present invention is based on the understanding that actuating lever elements must be regularly removed from and reattached to the body of a paint gun. These processes are necessary, for example, to clean the actuating lever element, to attach a different actuating lever element, perhaps with a different ergonomic design, to the paint gun, or when the actuating lever element serves an additional purpose, such as being usable as a tool, particularly for mounting and / or dismounting the paint nozzle body. These mounting and dismounting processes must be as simple, quick, and reproducible as possible. The invention solves this problem by providing the bolt of the actuating lever element with a detent geometry and the paint gun body with a corresponding detent geometry.This design allows the user to detach the actuating lever from the gun body and attach it to the gun body without tools. The locking mechanism secures the actuating lever to the spray gun body, improving the efficiency of changing the actuating lever and gun body. The connection is wear-resistant, ensuring a long service life for the actuating lever.

[0015] The locking lug deforms elastically when inserted into the bore and folds back out as soon as it exits the bore. This creates an undercut between the locking lug and an end face of the bore in the spray gun body. This undercut ensures a secure, captive fit. The elastic deformation of the locking lug enables a snap-fit ​​connection, which improves assembly efficiency. The actuating lever element is removed by pressing on the second end (the end protruding from the spray gun body) of the bolt, causing the locking lug to deform elastically again as it re-enters the bore. The actuating lever element can then be pulled out of the spray gun body. Alternatively, the actuating lever element can be removed from the spray gun body without pressing on the second end of the bolt.

[0016] In one embodiment, the actuating lever element is arranged to be mounted on one side of the spray gun body. In particular, this can mean that the actuating lever element only partially covers one side of the spray gun body. Specifically, this can mean that only on one side of the spray gun body is a contact with, and / or spaced apart from, a portion of the actuating lever element. In both of the aforementioned possibilities, parts of the locking mechanism are omitted. The actuating lever element can only partially cover one side of the spray gun body, or a portion of the actuating lever element can only contact, and / or space away from, one side of the spray gun body, with at least a portion of the locking mechanism contacting on the other side.In particular, “arranged on one side of the spray gun body” can mean that the actuating lever element is attached to the spray gun body on only one side, especially by means of the locking geometry.

[0017] In one embodiment, the locking geometry on the bolt has at least two, preferably at least three, circumferentially spaced segments. In particular, the outer surface of the bolt is not continuous in the area of ​​the segments, but interrupted circumferentially. In particular, gaps are arranged between the segments. In particular, the segments are substantially the same size. In particular, the distances and / or gaps between the segments are the same size. In particular, the segments are designed as tongues. In particular, at least two, preferably three or four, segments are evenly distributed around the circumference of the bolt or around the circumference of the locking geometry. In particular, the segments or tongues are resiliently designed. In particular, the segments are arranged in the area of ​​the second end of the bolt.In particular, the segments extend over at least 25%, and especially over at least 50%, of the length of the bolt.

[0018] In this way, applying an external force changes the shape of the locking mechanism, allowing the locking connection to be established and released from the spray gun body. Due to the elastically deformable segments, the locking lugs require little to no deformation to create a locking connection. The segments deform elastically when inserted into the bore and unfold again as soon as the locking lug emerges from the bore. This creates an undercut between the locking lug and an end face of the bore in the spray gun body. This undercut ensures a secure, captive fit. The elastic deformation of the segments enables a locking connection, which positively impacts assembly efficiency.The actuating lever element is removed by pressing on the second end (the end protruding from the spray gun body) of the bolt. This causes the segments to deform elastically again as the locking lug re-engages in the bore. The actuating lever element can then be pulled out of the spray gun body. It may also be possible to remove the actuating lever element from the spray gun body without pressing on the second end of the bolt.

[0019] In one embodiment, the at least one locking lug is arranged on at least one of the segments, in particular integrally. Specifically, the at least one locking lug is arranged at the second end of the bolt, i.e., on the side of the bolt facing away from the actuating lever element. In particular, at least one locking lug is arranged on each of the segments. In particular, at least one locking lug extends over the entire width of at least one segment. In particular, a locking lug has substantially the same width as the segment on which it is arranged.

[0020] In this way, when the locking lug engages the detent geometry in the spray gun body during assembly of the trigger lever element, it moves radially inwards and then radially outwards again to engage the detent geometry in the spray gun body. The segments with the locking lug deform elastically when inserted into the bore and unfold again as soon as the locking lug emerges from the bore. This creates an undercut between the locking lug and an end face of the bore in the spray gun body. This undercut ensures a secure, captive fit. The elastic deformation of the segments enables a low-wear locking connection. This has a positive effect on assembly efficiency and the service life of the trigger lever element.The actuating lever element is removed by pressing on the second end (the end protruding from the spray gun body) of the bolt. This causes the segments to deform elastically again as the locking lug re-engages in the bore. The actuating lever element can then be pulled out of the spray gun body. It may also be possible to remove the actuating lever element from the spray gun body without pressing on the second end of the bolt.

[0021] In one embodiment, the segments are shaped such that when the bolt is inserted into the bore, the segments are moved towards the longitudinal axis of the bolt, in particular towards each other, and when the segments exit the locking geometry, they move away from the longitudinal axis of the bolt, in particular away from each other.

[0022] In one embodiment, the bolt is hollow at least in some areas. In particular, the bolt is hollow essentially along its entire length.

[0023] In one embodiment, the at least one locking lug projects radially beyond the outer surface of the bolt in at least one area, preferably in at least two areas, preferably in at least three areas, particularly in a widened state, and the diameter of the bolt in this area is larger than the diameter of the bore.

[0024] The term "expanded state" refers in particular to a state in which the locking lug and / or the segments are not elastically deformed.

[0025] In this way, the radial overhang on at least one area larger than the diameter of the bore provides an undercut that enables captive storage.

[0026] In one embodiment, the bore is a blind hole, with the detent geometry formed inside the spray gun body. The detent geometry is, for example, designed as a groove. The detent geometry can be implemented, for example, using a plastic insert that is inserted into the blind hole in the gun body and then pressed, glued, and / or screwed in place. The plastic insert then has, for example, a groove or an undercut. Alternatively, the detent geometry can be implemented, for example, using a metal insert, particularly made of stainless steel, especially chromium-nickel steel, which is inserted into the blind hole in the gun body and then pressed, glued, and / or screwed in place. The metal insert then has, for example, a groove or an undercut.

[0027] In one embodiment, the bore is a through bore with a first opening and a second opening, and it has chamfers at both openings, with the chamfer at the first opening of the bore being larger than the second chamfer at a second opening of the bore.

[0028] In this way, the first, larger chamfer improves assembly. The second, smaller chamfer has a positive effect on captive storage and still allows for easier removal of the bearing compared to an opening without a chamfer.

[0029] In one embodiment, the bolt has a sliding surface on its outer surface for rotatable mounting of the actuating lever element in the bore.

[0030] This improves the bearing behavior of the bolt. 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, for example, be made of plastic. The sliding bushing can, for example, be made of metal, in particular stainless steel, in particular chromium-nickel steel. In all cases, the sliding bushing can be inserted, pressed, glued, and / or screwed into the pistol body. In all cases, the sliding bushing can have a constant inner diameter along its length. In all cases, the sliding bushing can have a section with a smaller and a section with a larger inner diameter.In all cases, the sliding bushing can have areas with different outer diameters; in particular, it can have a larger outer diameter at the end facing the actuating element than in an area facing away from the actuating element. In all cases, the sliding bushing can, for example, have a groove or an undercut. In all cases, the sliding bushing can have a chamfer, in particular at its end facing away from the actuating element and / or at its end facing the actuating element. A chamfer always facilitates the insertion and / or removal of the bolt from or into the bore, or from or into the bore with the sliding bushing arranged therein.

[0031] In one embodiment, the bolt has a sealing plug.

[0032] The sealing plug can be used to make it easier to push the actuating lever element out of the spray gun body or bore. The sealing plug can enlarge the finger support used to push the actuating element out of the spray gun body or bore, thus making the release of the connection more ergonomic. The sealing plug can also be used to widen the locking geometry, in particular to keep the segments further apart, to ensure a more secure hold of the actuating lever element in the spray gun body. Specifically, the sealing plug has a cylindrical body and a head, preferably a flat one. In particular, the outer diameter of the cylindrical body is at least partially equal to the inner diameter of the bolt. In particular, the head is larger than the inner diameter of the bolt.This allows the underside of the head to act as a stop for inserting the locking plug into the bolt. Specifically, the head has a smaller diameter than the bore in the spray gun body. This allows the actuating lever element to be pushed out of the spray gun body without having to remove the locking plug from the bolt, simply by the user pressing on the head of the locking plug. However, it may also be necessary to remove the locking plug from the bolt before releasing, and in particular pushing out, the actuating lever element from the spray gun body, for example, because the bolt head has a larger diameter than the bore, or because the locking plug reinforces the connection between the bolt and the spray gun body to such an extent that releasing, and in particular pushing out, the actuating lever element from the spray gun body is not possible or only possible with great difficulty.In particular, the sealing plug may extend over the entire length or nearly the entire length of the hollow section of the bolt. In particular, the sealing plug may extend over a portion of the length of the hollow section of the bolt, in particular over 10% to 90% of the length, and in particular over 25%, 50%, or 75%. The sealing plug, or at least a portion of the sealing plug, in particular the head of the sealing plug, may be a different color than the spray gun body and / or the bolt and / or the actuating lever element.

[0033] Instead of pushing the actuating lever element out of the paint gun body by pressing on the second end of the bolt or on the head of the sealing plug shown, it can be provided that the actuating lever element can be pulled out of the gun body.

[0034] Another aspect concerns the use of an actuating lever element in a paint gun described above.

[0035] Another aspect concerns an actuating lever arrangement for a paint gun, in particular for a paint gun described above and below, comprising an actuating lever element with a bolt arranged on the actuating lever element having a bolt outer surface, wherein the bolt has a first bolt end and a second bolt end, wherein the first bolt end is connected to the actuating lever element, wherein the bolt, in particular the second bolt end, has a detent geometry, wherein the detent geometry has at least one detent lug integrally connected with at least a part of the bolt, in particular an integrally connected with the second bolt end.

[0036] The actuating lever assembly comprises, in particular, the actuating lever element, the bolt, and / or the detent geometry described above. The features of the actuating lever element, bolt, and detent geometry described above in connection with the paint gun according to the invention also apply, in particular, to the actuating lever assembly according to the invention, especially to the actuating lever element, the bolt, and the detent geometry of the actuating lever assembly according to the invention.

[0037] The actuating lever element is preferably designed as a single-arm actuating lever element. The actuating lever element preferably has an actuating lever body with a finger rest, wherein a mounting arm extends from only one side of the actuating lever body. This mounting arm is attached to the paint gun body on one side. In contrast, with conventional two-arm actuating lever elements, two mounting arms extend from two opposite sides of the actuating lever body, with both mounting arms being attached to opposite sides of the paint gun body.

[0038] The counter-geometry is specifically designed to interact with a locking geometry on a paint gun body in such a way that a bore of the paint gun body and the outer surface of the bolt form a bearing, and the bolt is rotatably and securely mounted in the bore.

[0039] In one embodiment, the counter-geometry has at least two, preferably at least three, segments spaced apart from each other in the circumferential direction.

[0040] In one embodiment, at least one locking lug is arranged on at least one of the segments.

[0041] In one embodiment, the segments are shaped such that when an external force is applied radially to the segments, they move towards each other, and when the force is removed, they move away from each other again. The force acts particularly radially towards the center of the bolt, specifically along the longitudinal axis of the bolt. This causes the segments to move towards each other, especially when the bolt is inserted into the bore in the spray gun body, and to move away from each other again when the segments exit the locking mechanism.

[0042] In one embodiment, the bolt is at least partially hollow inside.

[0043] In one embodiment, the bolt has a sealing plug.

[0044] The features described above, including those from different embodiments, can also be combined, resulting in synergistic interactions that exceed the sum of the individual effects. The statements made in connection with the paint gun according to the invention can also apply to the actuating lever arrangement according to the invention.

[0045] The invention is explained below with reference to exemplary embodiments, which are described with reference to the following figures: Fig. Figure 1 shows an actuating lever element or an actuating lever arrangement; Fig. Figure 2 shows a detail of the actuating lever element or the actuating lever arrangement. Fig. 1; Fig. Figure 3 shows a paint gun in a first view; Fig. Figure 4 shows a paint gun in a second view; Fig. Figure 5 shows a first sectional view of the connection between the actuating lever element and the paint gun or between the actuating lever assembly and the paint gun; Fig. Figure 6 shows a second sectional view of the connection between the actuating lever element and the paint gun, or between the actuating lever assembly and the paint gun.

[0046] The following section describes and explains exemplary embodiments based on the figures shown above. Identical reference numerals or analogous reference numeral structures refer to analogous or interacting components.

[0047] Fig. Figure 1 shows part of an actuating lever assembly 31 or an actuating lever element 30. For the sake of simplicity, the terms "actuating lever assembly" and "actuating lever element" are used synonymously below. Actuating the actuating lever element 30 in a metering trigger direction deflects a movable metering device within a spray gun body along an axis of movement of the metering device, releasing a metering needle from its valve seat in a material nozzle. This causes the material to be applied to be dispensed from the material nozzle or paint nozzle in the direction of a paint delivery direction. The spray gun can also be designed such that, when actuated, the actuating lever element opens an air valve, allowing atomizing air for spraying the material and / or shaping air for forming the spray jet to flow from an air cap of the spray gun.The actuating lever element 30 has a bolt 20 with an outer bolt surface 28. The bolt 20 is connected to the actuating lever element 30 at its first end 21. The bolt 20 and the actuating lever element 30 are manufactured in one piece. The bolt 20 can be made of metal and / or plastic. The actuating lever element 30 can be made of metal and / or plastic. The actuating lever element 30 and the bolt 20 are made, for example, of PA66. The outer bolt surface 28 has a sliding surface for rotatably mounting the actuating lever element 30 in a bore of the spray gun body (not shown). The second bolt end 22 of the bolt 20 has a detent geometry 25. The detent geometry 25 is configured with a detent geometry (not shown in the figure) of a [missing information]. Fig. 1. The paint gun body (not shown) interacts in such a way that a... Fig. 1 not shown bore of a Fig. 1 the body of the spray gun (not shown) and the outer surface of the bolt 28 form a bearing, so that the bolt 20 is rotatably and securely mounted in the bore.

[0048] Fig. Figure 2 shows a detail of the actuating lever element 30 or the actuating lever arrangement 31. Fig. 1, in particular the bolt 20. The locking geometry 25 of the bolt 20 has several locking lugs 32 integrally connected to at least a part of the bolt 20, in this case several integrally connected to the second bolt end 22. The locking geometry 25 on the bolt 20 has at least two, in this case three, circumferentially spaced segments 25a, 25b, 25c. A locking lug 32 is integrally arranged on each of the segments 25a, 25b, 25c. The segments 25a, 25b, 25c are shaped such that, when the bolt 20 is inserted into the Fig. 2 not shown bore in a Fig. The two spray gun bodies (not shown) are moved towards each other and, upon exiting segments 25a, 25b, 25c, into the Fig. 2 not shown raster geometry of a in Fig. The two parts of the spray gun body (not shown) move away from each other again. The bolt 20 is, at least in part, hollow inside. The locking lugs 32 project radially beyond the outer surface of the bolt 28 in three areas, particularly in an expanded state, with the diameter of the bolt 20 in this area being larger than the diameter of the Fig. 2 not shown boreholes in a Fig. 2 not shown paint gun bodies.

[0049] Fig. Figure 3 shows a spray gun 100 in a first view. The spray gun 100 has a spray gun body 110 and an actuating lever element 130. The actuating lever element 130 is arranged on one side of the spray gun body 110. The spray gun body 110 has a bore designed to receive a bolt of the actuating lever element 130. The bore is designed as a through bore. The bore has chamfers at each of its openings. The chamfers have, for example, an angle of 45° or 60°. The chamfers can, for example, have different angles. The larger chamfer can, for example, have an angle of 60° 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 allows for better insertion of the bolt into the bore.The smaller chamfer with the smaller width allows for a better locking effect against being pulled out.

[0050] The spray gun 100 has an air supply 101, which, depending on the type of spray gun, can be a compressed air supply. Furthermore, the spray gun 100 has a material or paint supply 102, through which the material to be applied is fed. It should be understood that the material supply can also take place at other points, depending on the design principle and application of the spray gun. The embodiment shown here also has a so-called material quantity control 103, by means of which the rear stop for the paint needle, and thus the maximum opening degree of the paint nozzle outlet and therefore the maximum amount of material exiting, can be defined. Preferably, a so-called air micrometer is located on the air supply 101, by means of which the supplied air quantity can be regulated or metered.The embodiment shown here further features a so-called air cap 104, which has outlet openings for the atomizing air and the forming air. The amount of material dispensed can be metered by the user during application via the actuating lever element 130, which is rotatably mounted on the spray gun body 110 about a pivot axis. Actuating the actuating lever element 130 in a metering trigger direction deflects a movable metering device within the spray gun body 110 along an axis of movement of the metering device, releasing a metering needle 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 the direction of a paint dispensing direction.The spray gun 100 is designed such that, when actuated, the operating lever element 130 opens an air valve, allowing atomizing air for atomizing the material to be sprayed, and / or shaping air for forming the spray jet, to flow out of the air cap 104 of the spray gun 100. Fig. Figure 3 also shows the fastening arm of the single-arm actuating lever element 130.

[0051] Fig. Figure 4 shows a 200 mm spray gun in a second view, which differs from the first view. Fig. 3 opposite. The bolt 230 protrudes from the bore 218 of the spray gun body 210. The spray gun body 210 has a detent geometry 215, which in this case is designed as the end face of the bore 218. This side of the spray gun body 210 is not gripped by a mounting arm of the actuating lever element 130. Of course, one mounting arm of the actuating lever element 130 can also be located on the other side of the spray gun body 210. Preferably, however, it is located on the right side of the spray gun body 210, since the actuating lever element 130 is usually operated with the user's right hand, which means that, in addition to a desired force against the spray direction, i.e., towards the user, the user also exerts a rather unintended force to the left, as viewed from the user, on the actuating lever element 130.The connection between the actuating lever element 130 and the paint gun body 210 can better counteract this force if the fastening arm of the actuating lever element 130 is located on the right side of the paint gun body 210.

[0052] Fig. 5 shows a first sectional view along the in Fig. 4 section line AA shown and through the connection between actuating lever element 30 and spray gun 100 or spray gun body 110, or between actuating lever assembly 31 and spray gun 100 or spray gun body 110. The bolt 20 with the actuating lever element 30 attached to it is inserted into the bore 18 in the spray gun body 110 such that the segments 25a, 25b, 25c are compressed when the bolt 20 is inserted into the bore 18 and expand again when the segments 25a, 25b, 25c emerge from the opposite side of the bore 18 and into the detent geometry 15. The actuating lever element 30 is held on or in the spray gun body 110 by means of the detent lugs 32. The locking lugs 32 are arranged at the end of the bolt 20 facing away from the actuating lever element 30 and at the ends of the segments 25a, 25b, 25c facing away from the actuating lever element 30. The bolt 20 is hollow inside.At its end facing the actuating lever element 30, it has ribs 26 which serve in particular to stiffen the bolt 20 and / or to clamp a component mentioned below. Fig. 5 not shown, plugs can serve. The ribs 26 can be arranged at the end of the bolt 20 facing away from the actuating lever element 30. The ribs 26 can extend over the entire length of the bolt 20. In their in Fig. In the expanded state shown in Figure 5, the locking lugs 32 project radially beyond the outer surface of the bolt 28 in three areas, the diameter of the bolt 20 in this area being larger than the diameter of the bore 18. This ensures, in particular, the captive arrangement of the actuating lever element 30 on or in the paint gun body 110. The bore 18 is a through bore with a first opening 18a and a second opening 18b. At both openings 18a, 18b, the bore 18 has chamfers 19a, 19b, wherein the chamfer 19a at the first opening 18a of the bore 18 is larger than the second chamfer 19b at the second opening 18b of the bore 18. In particular, this results in less resistance to inserting the bolt 20 into the bore 18 than resistance to removing the bolt 20 from the bore 18. For arranging the actuating lever element 30, respectively...Less force is required to operate the actuating lever assembly 31 in the paint gun body 110 than to remove the actuating lever element 30 or the actuating lever assembly 31 from the paint gun body 110.

[0053] When the actuating lever element 30 is actuated, the bolt 20 moves in the direction of rotation about the pivot point, in particular about the center point of the bolt 20. In the axial direction, the actuating lever element 30 is fixed in the paint gun body 110 by the detent connection.

[0054] Fig. 6 shows essentially the same arrangement as the Fig. 5, with the difference that the bolt is 20 in Fig. 6 has a sealing plug 29 at its end furthest from the actuating lever element 30. The sealing plug 29 has at least one sealing plug protrusion 29a, which may be designed similarly to the locking lugs 32 of the bolt 20 and which may be distributed around the circumference of the sealing plug 29. This sealing plug protrusion 29a creates an interference fit between the sealing plug 29 and the bore 18. The sealing plug 29 can serve to make it easier to push the actuating lever element 30 out of the spray gun body 110 or out of the bore 18. The sealing plug 29 can serve to widen the locking geometry, in particular to keep the segments 25a, 25b, 25c apart from each other in order to ensure a more secure hold of the actuating lever element 30 in the spray gun body 110. The ribs 26 inside the bolt 20 can serve to further fix the sealing plug 29 in the bolt 20.In particular, the sealing plug 29 has a cylindrical body 29b and a preferably flat head 29c. Specifically, the outer diameter of the cylindrical body 29b is at least partially equal to the inner diameter of the bolt 20. Specifically, the head 29c is larger than the inner diameter of the bolt 20. This allows the underside of the head 29c to serve as a stop for inserting the sealing plug 29 into the bolt 20. Specifically, the head 29c has a smaller diameter than the bore 18 in the spray gun body 110. This allows the actuating lever element 30 to be pushed out of the spray gun body 110 without having to remove the sealing plug 29 from the bolt 20, simply by the user pressing on the head 29c of the sealing plug 29. However, it may also be provided that the sealing plug 29 is removed from the actuating lever element 30 before it is released, in particular pushed out.the bolt must be removed from the paint gun body 110, e.g. because the head 29c of the bolt 29 has a larger diameter than the bore 18, or because the sealing plug 29 reinforces the connection between bolt 20 and paint gun body 110 in such a way that it is not possible, or only with great difficulty, to loosen, in particular push out, the actuating lever element 30 from or out of the paint gun body 110.

[0055] Instead of pushing the actuating lever element 30 out of the paint gun body 110 by pressing on the in Fig. 5 marked second end 22 of the bolt 20 or on the in Fig. The head 29c of the locking plug 29 shown in Figure 6 can be designed so that the actuating lever element 30 can be pulled out of the pistol body. Reference sign 110, 210 Paint gun body 15, 215 Locking geometry on the paint gun body 18, 218 bore 18a first opening of the borehole 18b second opening of the bore 19a Chamfer at first opening of the bore 19b Chamfer at second opening of the bore 20, 230 bolts 21 first end of the bolt 22 second end of the bolt 25 Counter-geometry on the bolt 25a, 25b, 25c segments 26 ribs 28 Bolt outer surface 29 sealing plugs 29a Sealing plug protrusion 29b cylindrical body of the sealing plug 29c Head of the sealing plug 30, 130 Actuating lever element 31 Actuating lever arrangement 32 Rastnase 100, 200 paint gun 101 Air supply 102 Paint supply 103 Material quantity regulation 104 Air cap

Claims

[1] Paint gun (100, 200), comprising: Actuating lever element (30, 130) with a bolt (20, 230) arranged on the actuating lever element (30, 130) with a bolt outer surface (28); Paint gun body (110, 210) with a bore (18, 218) with a first opening (18a) for receiving the bolt (20, 230) of the actuating lever element (30, 130) and a detent geometry (15, 215); wherein the bolt (20, 230) is designed to fasten the actuating lever element (30, 130) to the paint gun body (110, 210); wherein the bolt (20, 230) has a first bolt end (21) and a second bolt end (22), wherein the first bolt end (21) is connected to the actuating lever element (30, 130), wherein the bolt (20, 230), in particular the second bolt end (22), has a detent geometry (25) which is designed to interact with the detent geometry (15, 215) on the paint gun body (110, 210) in such a way that the bore (18, 218) and the outer surface of the bolt (28) form a bearing, and the bolt (20, 230) is rotatably and securely mounted in the bore (18, 218), wherein the locking geometry (25) has at least one locking lug (32) integrally connected with at least one part of the bolt (20, 230), in particular one locking lug (32) integrally connected with the second bolt end (22). [2] Paint gun (100, 200) according to claim 1, wherein the actuating lever element (30, 130) is arranged to be arranged on one side of the paint gun body (110, 210). [3] Paint gun (100, 200) according to claim 1 or 2, wherein the locking geometry (25) on the bolt (20) has at least two, preferably at least three, circumferentially spaced segments (25a, 25b, 25c). [4] Paint gun (100, 200) according to claim 3, wherein the at least one locking lug (32) is arranged on at least one of the segments (25a, 25b, 25c), in particular is arranged in one piece. [5] Paint gun (100, 200) according to claim 3 or 4, wherein the segments (25a, 25b, 25c) are shaped such that the segments (25a, 25b, 25c) are moved towards each other when the bolt (20, 230) is inserted into the bore (18, 218) and move away from each other when the segments (25a, 25b, 25c) exit into the detent geometry (15, 215). [6] Paint gun (100, 200) according to one of the preceding claims, wherein the bolt (20, 230) is designed to be hollow at least in part in its interior. [7] Paint gun (100, 200) according to one of the preceding claims, wherein the at least one locking lug (32) projects radially beyond the bolt outer surface (28) in at least one area, preferably in at least two areas, preferably in at least three areas, particularly in a widened state, and wherein the diameter of the bolt (20, 230) in this area is larger than a diameter of the bore (18, 218). [8] Paint gun (100, 200) according to one of the preceding claims, wherein the bore (18, 218) is a blind bore, wherein the detent geometry (15, 215) is formed inside the paint gun body (110, 210). [9] Paint gun (100, 200) according to one of the preceding claims, wherein the bore (18, 218) 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, 218) is larger than the second chamfer (19b) at a second opening (18b) of the bore (18, 218). [10] Paint gun (100, 200) according to one of the preceding claims, wherein the bolt (20, 230) has a sliding surface on the cylindrical surface for rotatable bearing of the actuating lever element (30, 130) in the bore (18, 218). [11] Paint gun (100, 200) according to one of the preceding claims, wherein the bolt (20, 230) has a sealing plug (29). [12] Use of an actuating lever element in a paint gun according to any one of claims 1 to 11. [13] Actuating lever arrangement (31) for a paint gun (100, 200), in particular for a paint gun (100, 200) according to one of claims 1 to 11, comprising: Actuating lever element (30, 130) with a bolt (20, 230) arranged on the actuating lever element (30, 130) with a bolt outer surface (28); wherein the bolt (20, 230) has a first bolt end (21) and a second bolt end (22), wherein the first bolt end (21) is connected to the actuating lever element (30, 130), wherein the bolt (20), in particular the second bolt end (22), has a detent geometry (25), wherein the locking geometry (25) has at least one locking lug (32) integrally connected with at least one part of the bolt (20, 230), in particular one locking lug (32) integrally connected with the second bolt end (22). [14] Actuating lever arrangement (31) according to claim 13, wherein the detent geometry (25) has at least two, preferably at least three, circumferentially spaced segments (25a, 25b, 25c). [15] Actuating lever arrangement (31) according to claim 14, wherein the at least one locking lug (32) is arranged on at least one of the segments (25a, 25b, 25c). [16] Actuating lever arrangement (31) according to claim 14 or 15, wherein the segments (25a, 25b, 25c) are shaped such that when a force is applied from the outside in a radial direction to the segments (25a, 25b, 25c) the segments (25a, 25b, 25c) are moved towards each other and when the force is removed the segments (25a, 25b, 25c) move away from each other again. [17] Actuating lever arrangement (31) according to one of claims 13 to 16, wherein the bolt (20, 230) is designed to be hollow at least in some areas inside. [18] Actuating lever arrangement (31) according to one of claims 13 to 17, wherein the bolt (20, 230) has a sealing plug (29).

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