Angle-indexed spray gun, associated rings, assemblies, and processes

Abstract

We propose a spray gun that can maintain the angular position between the spray head and the body, including during gun maintenance. [Solution] The present invention relates to a coating product spray gun (10) having a body (12), a spray head (14), and a spray nozzle (16). The gun (10) has a ring (18) connecting the spray head (14) and the body (12), and an angle-holding element for the angular position between the ring (18) and the spray head (14). The gun (10) has a fixing element (22) that is movable between a fixed position that fixes the angular position of the ring (18) relative to the body (12) and a released position that allows the ring (18) to rotate angularly relative to the body (12). The present invention also relates to related rings, assemblies, and methods.

Description

Technical Field

[0001] The present invention relates to a coating product spray gun having a body, a spray head, and a spray nozzle, the spray head defining a passage, and the spray nozzle being disposed in the passage of the spray head.

[0002] The present invention also relates to related rings, assemblies, and methods.

Background Art

[0003] The angular positions of the spray head and the spray nozzle are adjustable relative to the gun body.

[0004] This is particularly important for the quality of the coating and serves to limit the loss of the coating product outside the surface to be coated.

[0005] Once the angular position is adjusted, it may be beneficial to maintain that angular position, particularly to avoid the need to readjust.

[0006] The solution is to fix the spray head to the body.

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, in the case of gun maintenance, particularly head and nozzle maintenance, the head is removed from the body. Therefore, the angular position is not maintained and new adjustments are required.

[0008] An object of the present invention is to propose a spray gun capable of maintaining the angular position between the spray head and the body, including in the case of maintenance.

Means for Solving the Problems

[0009] To achieve this objective, the present invention relates to a coating product spray gun having a body, a spray head, and a spray nozzle, wherein the spray head defines a passage, the spray nozzle is positioned in the passage of the spray head, the gun has a ring, the ring connects the spray head and the body, the gun has an angle-holding element for the angular position between the ring and the spray head, the gun has a fixing element, the fixing element being movable between a fixed position in which the fixing element fixes the angular position of the ring relative to the body and a released position in which the fixing element allows angular rotation of the ring relative to the body.

[0010] Therefore, the angle-holding element fixes the angular position between the ring and the spray head. When the fixing element is in the released position, it is possible to adjust the angular position between the spray head and the body. When the angular position is correct, the fixing element is moved to the fixed position, maintaining the angular position between the ring and the body, and consequently between the spray head and the body. For maintenance, the head can be removed from the ring, the ring remains on the body at the angular position maintained by the fixing element, and then the head is reassembled onto the ring at the angular position of the angle-holding element.

[0011] According to another beneficial aspect of the present invention, the cancer has one or more of the following features, individually or in any technically possible combination: - The fixing element includes a rod having shoulders, the rod moving between a fixed position and a released position, and in the fixed position, the shoulders apply a force that presses the ring against the body in the axial direction. - The spray head has a main shaft, and the rod moves parallel to the axial direction between a fixed position and a released position, with the axial direction being parallel to the main shaft of the spray head. - The body has an orifice opening that opens to the front of the body, the ring extends toward the front of the body at the fixed position of the fixed element, the rod extends partially into the orifice, and the body has an opening that extends between the side of the body and the orifice, thereby allowing the rod to be accessed from the side through the opening. - The gun has a screw, the opening is threaded, and the screw can be screwed into a position that holds the rod along the screw axis, the screw extends toward a recess in the rod, the recess has a chamfered surface, the chamfered surface allows the rod to move toward a fixed position when the screw is screwed into the position that holds the rod. - The angle-holding element for the angular position between the ring and the spray head also maintains the angular position between the spray head and the spray nozzle. And / or, - The angle-holding element for the angular position between the ring and the spray head has at least one index element, the ring has at least one complementary notch of at least one index element, and the spray head has at least one complementary hole of at least one index element, with each index element extending through its respective notch and its respective hole.

[0012] The present invention also relates to a ring adapted to extend between the body of a coating product spray gun and an assembly including a spray head and a spray nozzle, wherein the ring has at least one complementary notch of at least one index element, and the at least one notch is adapted such that the index element extending through each notch extends through a hole in the spray head.

[0013] The present invention also relates to an assembly having a spray head for a coating product spray gun, the assembly further comprising at least one index element, the spray head having at least one complementary hole of the at least one index element, the spray head defining a rear side opposite to the spray of the coating product, the index element or each index element extending through the hole or each hole, protruding from the rear hole and protruding axially from the spray head.

[0014] The present invention also relates to a method for positioning the angular position between the gun body and the spray head as described above, and includes the following steps. - Provides a gun as described above, in which the fixed element is in the open position. - Position the ring at an angle relative to the body. - Move the fixing element to the fixed position so that the ring and spray head are maintained at an angular position relative to the body. [Brief explanation of the drawing]

[0015] The present invention is given only as a non-limiting example and will become clearer by reading the following description, which is made with reference to the drawings. [Figure 1] This is a partial cross-sectional view of a gun according to an embodiment of the present invention. [Figure 2] Figure 1 is a perspective view of the gun, excluding the spray head. [Figure 3] Figure 1 is a perspective view of the gun ring. [Figure 4] Figure 1 is a perspective view of the gun head and index element. [Modes for carrying out the invention]

[0016] A coating product spray gun 10 according to an example of the present invention is partially shown in Figure 1.

[0017] The gun 10 has a body 12, a spray head 14, a spray nozzle 16, and a ring 18.

[0018] The gun 10 further has an angle holding element 20.

[0019] The gun 10 further has a fixing element 22.

[0020] The gun 10 further has, in this embodiment, for example, an outer ring 24.

[0021] The body 12 is adapted to receive an assembly having a spray head 14 and a spray nozzle 16, and more specifically, in this embodiment, is adapted to receive an assembly having a spray head 14, a spray nozzle 16, and a ring 18.

[0022] The body 12 more specifically has a passage 26 for a coating product.

[0023] The passage 26 has a downstream outlet where an assembly having a spray head 14, a spray nozzle 16, and a ring 18 is disposed.

[0024] The passage 26 extends around the main axis X at the outlet.

[0025] The body 12 has, in this embodiment, a front face 28 where the outlet of the passage 26 opens.

[0026] The body 12 has, in this embodiment, an orifice 30 that opens into the front face 28.

[0027] The orifice 30 extends parallel to the main axis X in this embodiment.

[0028] The orifice 30 extends perpendicular to the front face 28 in this embodiment.

[0029] The orifice 30 is, for example, a blind.

[0030] The orifice 30 is, for example, cylindrical.

[0031] In this embodiment, the body 12 also has an opening 32 that extends between the side surface 34 of the body 12 and the orifice 30.

[0032] The opening 32 is, for example, threaded.

[0033] The opening 32 extends perpendicular to the orifice 30.

[0034] The spray head 14 defines a passage, and the spray nozzle 16 is positioned in the passage of the spray head.

[0035] The spray head 14 defines the rear side 40 opposite to the spray of the coating product.

[0036] The spray head 14 has a main shaft that extends around it.

[0037] The spindle of the spray head 14 coincides with the spindle X.

[0038] The spray head 14, for example, in this embodiment, has at least one hole 33.

[0039] The holes or each of the holes 33 have a shape that complements the index elements described below, such as pins.

[0040] The holes, or each hole 33, are circular in the example shown.

[0041] The holes or each of the holes 33 extend parallel to the main axis of the spray head.

[0042] The spray nozzle 16 is integrated with the spray head 14.

[0043] The angular position of the spray nozzle 16 relative to the spray head 14 around the main spindle X is fixed or maintained in a fixed state, as described below, for example.

[0044] In this embodiment, the spray nozzle 16 also extends around the spindle, which coincides with the spindle X.

[0045] The spray nozzle 16 defines a passage 36 for spraying the coating product.

[0046] The spray nozzle 16 has an outlet in the shape of a slot 38, for example, to spray a coating product in the form of a flat jet.

[0047] The nozzle 16 is attached to the spray head 14.

[0048] In this embodiment, the spray head 14 and nozzle 16 are attached to the seat holder 39, and the seat holder 39 is attached to the body 12.

[0049] In this embodiment, the attachment of the spray head 14 to the body 12 by the sheet holder does not allow for angle fixing between the body 12 and the spray head 14.

[0050] In this embodiment, the ring 18 is attached to the body 12 and held in place by the fixing element 22.

[0051] More specifically, the ring 18 connects the spray head 14 and the body 12 at an angle along axis X.

[0052] In this embodiment, the ring 18 extends around the main spindle X.

[0053] The ring 18 has an outer surface 44 and an inner surface 46, the inner surface 46 facing the main spindle X and the outer surface 44 on the opposite side from the inner surface 46.

[0054] The ring 18 has a shoulder portion 42 that can be held against the front surface 28 of the body by a fixing element 22.

[0055] The shoulder portion 42 is positioned on the outer surface 44 of the ring 18.

[0056] The shoulder portion 42 extends around the entire circumference of the ring 18.

[0057] The ring 18 has a so-called internal portion 48 on one side of the shoulder portion 42 along the main axis X, and the internal portion 48 is intended to extend into the passage 26 of the body 12.

[0058] The interior portion 48 extends toward the inner wall of the exit of the passage 26.

[0059] When the shoulder portion 42 extends toward the front surface 28, the ring 18 is connected to the passage in a fluid-tight manner.

[0060] The ring 18 has at least one notch 50, and more specifically, in this embodiment, it has two notches extending parallel to the main spindle X.

[0061] The ring 18 has the same number of notches 50 as the holes 33 in the head 14.

[0062] The notches or each notch 50 have a shape that complements the index element, such as a pin.

[0063] The notch 50 is positioned, for example, on the same diameter as the diameter of the ring 18.

[0064] In this embodiment, at least one notch 50 is provided in the circumferential projection 52.

[0065] The protruding portion 52 extends from the inner wall 46 of the ring 18.

[0066] The inner wall 46 has a cylindrical shape except for the protruding portion 52.

[0067] The projection 52 extends over at least a portion of the circumference of the ring 18, and more specifically, in this embodiment, extends over the entire circumference of the ring.

[0068] At least one notch 50 completely or partially crosses the projection in a direction parallel to the main axis X.

[0069] Each notch or notch 50 has a hollow shape complementary to at least one index element, and in this embodiment, it has an arc shape, as described below.

[0070] The holes 33 and notches 50 are positioned in the head 14 and ring 18, respectively, such that when they are angularly aligned around the spindle X, each index element, which is a pin in this embodiment, passes through the hole 33 and cooperates with the corresponding notch 50.

[0071] In this embodiment, each hole 33 is aligned axially with the corresponding notch 50.

[0072] The arc circle has the same diameter as the circle of the corresponding hole 33.

[0073] In this embodiment, the ring 18 has rotational symmetry about the principal axis X, except for at least one notch 50.

[0074] The angle-holding element 20 is an element for maintaining the angular position between the ring and the spray head.

[0075] In this embodiment, the angle-holding element 20 has at least one index element 54, and in this embodiment, it has two index elements 54, and more specifically, in this embodiment, it has at least one pin.

[0076] In this embodiment, at least one pin is cylindrical.

[0077] Alternatively, at least one index element may have a shape different from that of a cylindrical pin.

[0078] The index element or each index element 54 is, for example, an independent member in this embodiment.

[0079] Alternatively, the index elements or each index element 54 are, for example, protrusions of the head 14. The index elements or each index element 54 are formed, for example, by machining the head. Where appropriate, the spray head 14 does not have, for example, holes 33.

[0080] Each index element 54 extends in the axial direction.

[0081] Each index element or index element 54 extends through its respective notch 50 and corresponding hole.

[0082] Each index element or index element 54 has a shape and dimensions such that there is no angular play between the head 14 and the ring 18, and each index element or index element 54 prevents any rotation of the head 14 relative to the ring 18.

[0083] If the index element or each index element 54 is a component independent of the head 14, the index element or each index element 54 extends through the holes 33 of the spray head 14 or their respective holes 33, protrudes from the holes 33 of the rear side 40, and protrudes in the axial direction of the spray head 14.

[0084] Therefore, the angle-holding element 20 maintains the angular position between the ring and the spray head.

[0085] In this embodiment, the angle-holding element 20 that maintains the angular position between the ring and the spray head also maintains the angular position between the spray head 14 and the spray nozzle 16.

[0086] The spray nozzle 16 further has, for example, at least one notch 56.

[0087] The spray nozzle 16 has the same number of notches 56 as the holes 33 in the head 14.

[0088] The notches or each notch 56 have a shape that is complementary to the index element 54.

[0089] The notch 56 is positioned, for example, on the same diameter as the diameter of the spray nozzle 16.

[0090] The notches 56 are positioned on the nozzle 16 such that, when they are angularly aligned around the main spindle X, each index element 54 passing through the hole 33 cooperates with the corresponding notch 56.

[0091] In this embodiment, each hole 33 is aligned axially with the corresponding notch 56.

[0092] Therefore, in this embodiment, each hole 33 is axially aligned with the corresponding notch 50 and the corresponding notch 56.

[0093] The index element or each index element 54 extends through the hole 33, the notch 56, and the notch 50.

[0094] The notches 56 ensure there is no angular play between the head 14 and the nozzle 16, and the index elements or each index element 54 prevent any rotation of the head 14 relative to the nozzle 16.

[0095] Therefore, the angle-holding element 20 maintains the angular position between the ring, the spray head, and the spray nozzle.

[0096] The holding system maintains the angular position between the ring, the spray head, and the spray nozzle, allowing for more precise angle adjustments.

[0097] Alternatively, the angle-holding element 20 between the ring and the spray head does not maintain the angle position between the spray head 14 and the spray nozzle 16, but only maintains the angle position between the ring 18 and the head 14.

[0098] Furthermore, the index element or each index element 54 extends, for example, only through the hole 33 and the notch 50.

[0099] Furthermore, the angular position between the nozzle and the spray head is maintained by a second angle-holding system having, for example, at least one second index element different from at least one index element 54.

[0100] Furthermore, each of the nozzle and the spray head has, for example, at least one second notch. More specifically, the nozzle has the same number of second notches as the spray head and the same number as the second index elements.

[0101] The second notch, or each second notch, has a shape that is complementary to the second index element.

[0102] Each second notch in the nozzle is aligned axially with the second notch in the head.

[0103] For example, the second notch is positioned on a different diameter from the notches 50 and 56 of each member.

[0104] The second index element, or each second index element, extends through the second notch of the nozzle and the second notch of the head.

[0105] The second index element, or each second index element, allows the angular position of the nozzle to be fixed relative to the head.

[0106] Therefore, the angle-holding element 20 can maintain the angular position between the ring and the spray head, and the second holding element maintains the angular position between the spray head and the spray nozzle.

[0107] This allows the retaining element to be short, rigid, and stable relative to the head, enabling index alignment between the head and nozzle before screwing in the head, and in some cases allowing removal of the seat holder without touching the ring.

[0108] The fixing element 22 is movable between a fixed position in which the fixing element 22 fixes the angular position of the ring 18 relative to the body 12, and a released position in which the fixing element 22 allows angular rotation of the ring 18 relative to the body 12.

[0109] The fixed element 22 has a rod 58 having a shoulder portion 60.

[0110] The shoulder portion 60 is positioned at the end of the rod 58.

[0111] In this embodiment, the rod 58 partially extends into the orifice 30.

[0112] For example, the rod 58 is accessible from the side 34 through the opening 32, meaning that a portion of the rod 58 extends into the visible part of the opening 32.

[0113] The end portion has a shoulder portion 60 and extends outward from the orifice 30.

[0114] The rod 58 can be translated within the orifice 30, and more specifically, it can be translated only in the axial direction.

[0115] Between the fixed position and the released position, the rod 58 moves parallel to itself along the axial direction.

[0116] The shoulder portion 60 extends from the rod 58 toward the main axis X, for example, in a direction perpendicular to the main axis X.

[0117] The shoulder portion 60 has dimensions such that it extends along the axial direction to the visible portion of the shoulder portion 42.

[0118] The rod 58 can move between a fixed position and a released position such that, in the fixed position, the shoulder portion 60 applies a force to press the ring 18 against the body 12 in the axial direction, and more specifically, applies a force to press against the front surface 28 of the body 12 in the axial direction.

[0119] In the fixed position, the shoulder portion 60 applies a force that presses the shoulder portion 42 against the front surface 28.

[0120] This prevents any movement, including rotation, between the ring 18 and the body 12.

[0121] In the released position, the rod 58 moves in parallel so that the shoulder portion 60 moves away from the body 12.

[0122] Therefore, in the released position, the rod 58 does not press the ring 18 against the body 12, allowing the ring 18 to move relative to the body 12, and in particular to rotate around the spindle X.

[0123] The rod 58, for example, advantageously has a recess 62.

[0124] When the rod 58 is in a fixed position, and when the rod 58 is in a released position, the recess 62 extends to a visible part of the opening 32.

[0125] The recess 62, for example, in this embodiment, has a chamfered portion 64.

[0126] The chamfered portion 64 forms the end of the recess on the opposite side of the shoulder portion 60.

[0127] The chamfered portion 64 forms a surface that is inclined in the axial direction and the radial direction, i.e., in the direction perpendicular to the principal axis X.

[0128] Gun 10 further has a screw 66.

[0129] The screw 66 is positioned in the opening and can be screwed around the screw axis in a position to hold the rod, and the screw extends toward the recess 62 of the rod, and more specifically, toward the chamfered portion 64 of the recess 62 in this embodiment.

[0130] In the position where the rod is held, the rod 58 is held in a predetermined position, more specifically, in a fixed position.

[0131] The chamfered portion 64 is such that when the screw 66 is screwed in to hold the rod, the rod 58 moves toward a fixed position, more specifically, the rod 58 moves axially toward the body 12 until it contacts the shoulder portion 42.

[0132] When the screw 66 is not in a position to hold the rod, the rod 58 is movable in the axial direction, and more specifically, it can move between a fixed position and a released position.

[0133] The outer ring 24 partially surrounds the spray head 14.

[0134] The outer ring 24 extends axially between the rear end 68 and the front end 70.

[0135] The outer ring 24, more specifically the rear end 68, can be screwed into the body 12, and more specifically into the side 34 between the front 28 and the opening 32.

[0136] The front end portion 70 has a shoulder portion 72, which is intended to extend in the opposite direction to the rear end portion 40, with respect to the edge 74 of the spray head 14, more specifically, with respect to the front edge 74 of the spray head.

[0137] In this embodiment, the outer ring 24 can be moved between the final position and at least one adjustment position by screwing it axially onto the body 12.

[0138] The final position corresponds to the maximum screw-in position of the outer ring 24 on the body 12.

[0139] In the final position, the shoulder portion 72 applies force to the spray head 14 in the direction of the body 12.

[0140] In this embodiment, at least one adjustment position corresponds to any intermediate screw-in position of the outer ring on the body, allowing movement of the head 14 relative to the outer ring 24.

[0141] In a particular embodiment, the gun 10 has a system for marking the angular position of the ring 18 relative to the body 12.

[0142] The marking system includes, for example, an angle marking around the exit on the front surface 28 of the body 12, and at least one mark on the outer surface 44 of the ring 18, more specifically on the protruding portion 42.

[0143] Alternatively, the marking system may have, for example, an angled marking on the outer surface 44 of the ring 18, more specifically on the projection 42, and at least one mark around the front surface 28 of the body 12 or around the fixing element 22, more specifically around the shoulder 60 of the rod.

[0144] Furthermore, the marking system allows for marking the angular position of the ring 18 relative to the body 12.

[0145] This makes it possible to reproduce the angular position, especially in other guns, or, for example, when it is necessary to remove an entire set of parts.

[0146] The present invention also relates to a ring adapted to extend between the body of a coating product spray gun and an assembly having a spray head and a spray nozzle, wherein the ring is as described above.

[0147] The present invention also relates to an assembly having a spray head and at least one indexing element for a coating product spray gun, wherein the spray head and indexing element are as described above.

[0148] The present invention also relates to a method for indexing the angular position between the gun body and the spray head, as described above.

[0149] The method includes the following steps in this order. -The gun 10 is provided as described above, and the fixed element 22 is in the open position. - The ring 18 is positioned at an angular position relative to the body 12, - The fixing element 22 is moved to a fixed position so that the ring 18, and thereby the spray head 14, are maintained at an angular position relative to the body 12.

[0150] In the described example, in the providing step, the screw 66 is not screwed into the position that holds the rod 58. Therefore, the screw 66 does not press against the recess 62.

[0151] Furthermore, in the supply step, the outer ring 24 is either not attached to the gun 10 or is in an adjustment position.

[0152] After the provisioning step, the ring 18 is rotatable around the spindle X relative to the body 12.

[0153] The ring 18 is rotationally integrated with the head 14, and in this embodiment, the nozzle 16. By adjusting the angular position of the ring 18 relative to the body 12, the angular position of the head 14, and in this embodiment, the nozzle 16, relative to the body 12 is adjusted.

[0154] In certain embodiments, the angle position adjustment is performed, for example, using a marking system as described above, by aligning at least one mark with an angle marking value or position.

[0155] After positioning the ring 18 at an angular position relative to the body 12, the fixing element 22 moves to a fixed position so that the relative angular position is maintained.

[0156] More specifically, in this embodiment, the screw 66 is screwed into the position that holds the rod.

[0157] Through the cooperation of the screw 66 and the chamfered portion 64, the rod 58 moves toward the body 12 and therefore moves to a fixed position.

[0158] In this embodiment, the method further includes the step of moving the fixed element 22 to a fixed position, and then positioning the outer ring 24 to its final position.

[0159] In this embodiment, the outer ring 24 is screwed onto the body 12 until it reaches its final position, i.e., until the shoulder portion 72 contacts the spray head.

[0160] If, after aligning the gun body and spray head to an angular position, it is desired to change the angular position to a second angular position, the method further includes the following steps in this order. - If appropriate, move the outer ring 24 to the adjustment position or remove the outer ring. - Move the fixed element 22 to the release position, - The ring 18 is moved angularly to a second angular position relative to the body 12. - Move the fixed element 22 to the fixed position, - If appropriate, position the outer ring 24 in its final position.

[0161] More specifically, in this embodiment, the screw 66 is removed from the opening without pressing against the recess 62, particularly the chamfered portion 64. The rod 58 is then made movable to the released position.

[0162] The movement of the fixed element 22 to its fixed position is performed, for example, as described above.

[0163] Therefore, the body and spray head are held in the second angular position by the ring.

[0164] In this embodiment, if it is necessary to remove the head from the body during gun maintenance, the head and nozzle are removed from the rest of the gun 10.

[0165] More specifically, in this embodiment, the outer ring is removed, and then the head and nozzle are removed from the rest of the gun.

[0166] The ring 18 is held in a predetermined position relative to the body 12 by the fixing element 22 and remains in that predetermined position.

[0167] At least one index element 54 remains with the head 14, for example, and more specifically in the corresponding hole 33 or as a protrusion.

[0168] After a maintenance step that requires removing the head from the body, the head and, in this embodiment, the nozzle are reassembled onto the body with at least one notch and at least one hole aligned with at least one index element.

[0169] If appropriate, the outer ring 24 is reassembled to the body in its final position.

[0170] Therefore, the angle-holding element can maintain the angular position between the ring and the head, and the fixing element between the ring and the body.

[0171] Therefore, according to the present invention, the head and, in this embodiment, the nozzle are reassembled with respect to the ring and, consequently, the body, at the same angular position as before.

[0172] Therefore, removing the head does not result in the loss of angle position adjustment.

Claims

1. Body (12) and A spray head (14) that defines the pathway, A spray nozzle (16) is positioned in the passage of the spray head (14), A ring (18) connecting the spray head (14) and the body (12), An angle-holding element (20) for the angular position between the ring (18) and the spray head (14), The ring (18) has a fixing element (22) that is movable between a fixed position that fixes the angular position of the ring (18) relative to the body (12) and a released position that allows angular rotation of the ring (18) relative to the body (12). A coating product spray gun (10) characterized by the following features.

2. The fixed element (22) has a rod (58) having a shoulder portion (60), The coating product spray gun according to claim 1, wherein the rod (58) moves between the fixed position and the released position such that, in the fixed position, the shoulder portion (60) applies a force to press the ring (18) against the body (12) in the axial direction.

3. The spray head (14) has a main shaft (X), The rod (58) moves parallel to the axial direction between the fixed position and the released position. The coating product spray gun according to claim 2, wherein the axial direction is parallel to the main axis (X) of the spray head (14).

4. The body (12) has an orifice (30) that opens on the front surface (28) of the body (12), The ring (18) extends toward the front surface (28) of the body (12) at the fixed position of the fixed element, The rod (58) partially extends into the orifice (30), The coating product spray gun according to claim 2 or 3, wherein the body (12) has an opening (32) extending between a side surface (34) of the body (12) and the orifice (30), and the rod (58) is accessible from the side surface (34) through the opening (32).

5. Including the screw (66), The opening (32) is threaded, The screw (66) is positioned within the opening (32) and can be screwed around the screw shaft in a position to hold the rod (58). The screw (66) extends toward the recess (62) of the rod (58), The recess (62) has a chamfered portion (64), The chamfered surface (64) is such that when the screw (66) is screwed into the position that holds the rod (58), the rod (58) moves toward the fixed position, as described in claim 4, for a coating product spray gun.

6. The angle-holding element (20) at the angular position between the ring (18) and the spray head (14) also maintains the angular position between the spray head (14) and the spray nozzle (16), as described in claim 1 or 2, for a coating product spray gun.

7. The angle-holding element (20) for the angular position between the ring and the spray head includes at least one index element (54), The ring (18) has at least one complementary notch (50) of the at least one index element (54), The spray head (14) has at least one complementary hole (33) of the at least one index element (54), The coating product spray gun according to claim 1 or 2, wherein the index element or each index element (54) extends through the respective notches (50) and the respective holes (33).

8. A spray head (14) for a coating product spray gun (10), At least one index element (54), The coating product spray gun (10) has a ring (18) that is adapted to extend between the body (12) and the spray head (14), The spray head (14) has at least one complementary hole (33) of the at least one index element (54), The ring (18) has at least one complementary notch (50) of the at least one index element (54), The assembly is characterized in that the at least one notch (50) is arranged such that the index element (54) extending through each of the notches (50) extends through the at least one hole (33) of the spray head (14).

9. A spray head (14) for a coating product spray gun (10), It has at least one index element (54), The spray head (14) has at least one complementary hole (33) of the at least one index element (54), The spray head (14) defines a rear side (40) opposite to the spray of the coating product, and a front side opposite to the rear side (40), The assembly is characterized in that the index element or each index element (54) extends through the hole or each hole (33), and extends through the hole or each hole (33) in the axial direction of the spray head (14) at the rear side (40) and the front side of the spray head (14), and protrudes from the hole (33).

10. The present invention provides the coating product spray gun (10) according to any one of claims 1 to 7, wherein the fixed element (22) is in the open position, The ring (18) is positioned at an angular position relative to the body (12), The fixing element (22) is moved to the fixing position such that the ring (18) and therefore the spray head (14) are maintained at the relative angular position with respect to the body (12). A method for indexing the angular position between the body (12) and the spray head (14) of the gun (10) according to claim 1 or 2, comprising the above.

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