Mounting and retention of fluid lance components

Abstract

The spray gun is configured to expel a spray fluid and compressed air that impacts the spray fluid to atomize the spray fluid. A trigger actuates one or more valves of the spray gun to cause the spray gun to spray. The trigger is mounted to a gun body of the spray gun by a trigger mount. The trigger is removable from the gun body, and the trigger includes one or more tool interfaces for connecting and / or disconnecting components of the spray gun.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to U.S. Provisional Application No. 63 / 537,319, filed September 8, 2023, entitled “FLUID SPRAY GUN TRIGGERMOUNTING AND RETENTION,” and to U.S. Provisional Application No. 63 / 569,401, filed March 25, 2024, entitled “FLUID SPRAY GUN COMPONENTMOUNTING AND RETENTION,” the disclosure of which is incorporated herein by reference in its entirety. Background Technology

[0003] This disclosure relates to spraying systems. More specifically, this disclosure relates to spray guns and components thereof used in spraying systems.

[0004] A spray gun can be used to spray fluids onto a surface. For example, a spray gun can be used to spray fluids such as paints, varnishes, finishes, and other coatings onto furniture, cabinets, appliances, equipment, assembly parts, etc.

[0005] Some spray guns utilize compressed gas (e.g., compressed air) to atomize the coating fluid into the desired pattern. Typically, the coating fluid is pressurized by a piston, diaphragm, or other positive displacement pump. The pump delivers the pressurized coating fluid to the spray gun, for example, via a direct connection or through a flexible hose. The spray gun is used to dispense the coating fluid. The spray gun can be attached to the end of a hose opposite to the pump. In this way, the spray gun does not include a pump, but releases the coating fluid pumped to it through the hose. The spray gun atomizes the pressurized coating fluid into a pattern, applying it to the surface.

[0006] Compressed gas is discharged to assist atomization, and in some examples, to shape the fluid spray. The spray gun discharges compressed air through an air cap, and the compressed air atomizes the spray fluid and can shape the spray fluid into the desired pattern.

[0007] The valve controls the flow of spray fluid and compressed gas discharged from the spray gun. The valve can be actuated to the open state by a trigger. The trigger needs to be removed from the gun body to install and remove one or more valves, which may involve manipulating multiple retainers. One or more valves may be arranged within a valve cylinder mounted to the spray gun. During installation and removal, the valve cylinder needs to be tightened and loosened using tools such as a wrench. Summary of the Invention

[0008] According to one aspect of this disclosure, a spray gun includes: a gun body; a bore extending within the gun body along a spraying axis; a body bore extending through the gun body and along a mounting axis; a first valve assembly at least partially disposed within the bore, the first valve assembly including a first valve configured to control the discharge of spraying fluid from the spray gun; and a trigger mountable to the gun body, the trigger being configured to actuate the first valve from a closed state to an open state, wherein the trigger is movable relative to the gun body between an engaged state and a disengaged state. In the engaged state, the trigger is movable to open the first valve; in the disengaged state, the trigger is spaced apart from the first valve assembly, allowing the first valve assembly to travel axially past the trigger along the spraying axis; and a trigger mount configured to mount the trigger to the gun body, the trigger mount being actuable between a holding state and an installed state, in which the trigger mount connects the trigger to the gun body and holds the trigger in the engaged state, and in the installed state, the trigger is detachable from the trigger mount and the gun body. The trigger mount includes a mount body at least partially disposed within the body bore, the mount body projecting out of the body bore in a first direction along the axis to interface with a first arm of the trigger, and the mount body projecting out of the body bore in a second direction along the axis to interface with a second arm of the trigger. The mount body is configured to displace along the mounting axis in the second direction to place the trigger mount in the installed state.

[0009] According to an additional or alternative aspect of this disclosure, a spray gun includes: a gun body; a bore extending within the gun body along a spraying axis; a body bore extending through the gun body and along a mounting axis; a first valve assembly at least partially disposed within the bore, the first valve assembly including a first valve configured to control the discharge of spray fluid from the spray gun; and a trigger mountable to the gun body, the trigger being configured to actuate the first valve from a closed state to an open state, wherein the trigger is movable relative to the gun body between an engaged state and a disengaged state. In the engaged state, the trigger is movable to open the first valve; in the disengaged state, the trigger is spaced apart from the first valve assembly, allowing the first valve assembly to travel axially past the trigger along the spray axis; and a trigger mount configured to mount the trigger to the gun body, the trigger mount being actuated between a holding state and an installed state, in the holding state where the trigger mount connects the trigger to the gun body and holds the trigger in the engaged state, and in the installed state where the trigger is detachable from the trigger mount and the gun body. The trigger mount includes a mount body at least partially disposed within the body bore and movable relative to the gun body, the mount body being configured to displace in a single direction along the mounting axis to disengage from the first trigger arm and the second trigger arm of the trigger, and to actuate the trigger mount from the holding state to the installed state.

[0010] According to another additional or alternative aspect of this disclosure, a method of assembling a spray gun includes: displacing a mounting body of a trigger mount in a first direction along a mounting axis of a body bore formed in the gun body of the spray gun; traveling the trigger through the mounting body such that a first pivot head of the mounting body is aligned with a first mounting opening through a first arm of the trigger, and a second pivot head of the mounting body is aligned with a second mounting opening through a second arm of the trigger; and displacing the mounting body in a second direction along the mounting axis such that the first pivot head enters the first mounting opening, and the second pivot head enters the second mounting opening.

[0011] According to another additional or alternative aspect of this disclosure, a method of disassembling a spray gun includes: displacing the mounting body of a trigger mount in a first direction along a mounting axis of a body bore formed in the gun body of the spray gun, such that a first pivot head of the mounting body travels away from a first mounting opening through a first arm of a trigger of the spray gun, and a second pivot head of the mounting body travels away from a second mounting opening through a second arm of a trigger; and traveling the trigger through the mounting body to remove the trigger from the gun body.

[0012] According to another additional or alternative aspect of this disclosure, a trigger for a spray gun includes: a trigger pull portion; a first arm extending from the trigger pull portion; a second arm extending from the trigger pull portion; a first mounting opening formed through the first arm, the first mounting opening including a first trigger support surface configured to straddle a pivot of the spray gun during actuation of the trigger; a second mounting opening formed through the second arm, the second mounting opening including a second trigger support surface configured to straddle the pivot of the spray gun during actuation of the trigger; and a tool connection portion configured to interface with a component of the spray gun to apply force to the component of the spray gun during one or both of installation and removal of the component.

[0013] According to another additional or alternative aspect of this disclosure, a method of servicing a spray gun includes: disconnecting a trigger from the gun body of the spray gun; connecting the trigger to a component of the spray gun; and applying a force to the component via the trigger to disconnect the component from the spray gun.

[0014] According to another additional or alternative aspect of this disclosure, a valve barrel for a spray gun includes: a valve barrel body extending along an axis and defining a flow chamber inside the valve barrel body; a nozzle formed at a first end of the valve barrel body, the nozzle being configured to output spray fluid from the flow chamber in a first direction along the axis; at least one fluid port extending through the valve barrel body between the exterior of the valve barrel body and the flow chamber formed inside the valve barrel body; and a first flared groove and a second flared groove formed in the valve barrel body, the first flared groove and the second flared groove opening in the first direction along the axis.

[0015] According to another additional or alternative aspect of this disclosure, a method of servicing a spray gun includes: disconnecting an air cap from the body of the spray gun; connecting the air cap to a component of the spray gun; and applying a force to the component through the air cap to disconnect the component from the spray gun. Attached Figure Description

[0016] Figure 1 This is an isometric view of the spray gun.

[0017] Figure 2A It is along Figure 1 The section cut by line 2-2 shows a cross-sectional view of the spray valve in the closed state.

[0018] Figure 2B It is along Figure 1 The section cut by line 2-2 shows a cross-sectional view of the spray valve in the open state.

[0019] Figure 3A This is a partial isometric view from the first lateral side of the spray gun, showing the trigger mounted to the gun body.

[0020] Figure 3B This is a partial isometric view from the second lateral side of the spray gun, showing the trigger mounted to the gun body.

[0021] Figure 3C It is along Figure 3A The sectional view is taken by line CC.

[0022] Figure 4A This is a partial isometric view from the first lateral side of the spray gun, showing the trigger removed from the gun body 334.

[0023] Figure 4B This is a partial isometric view from the second lateral side of the spray gun, showing the trigger removed from the gun body.

[0024] Figure 4C It is along Figure 4A The sectional view is taken by line CC.

[0025] Figure 5A This is the first isometric view of the trigger.

[0026] Figure 5B This is the second isometric view of the trigger.

[0027] Figure 5C This is the elevation side view of the trigger.

[0028] Figure 6 This is an enlarged isometric view of the mounting interface of the trigger on the spray gun.

[0029] Figure 7AThis is an isometric exploded view of the spray gun.

[0030] Figure 7B This is an isometric exploded view of the spray gun.

[0031] Figure 8 This is an isometric view of the trigger and spray control components.

[0032] Figure 9 This is an isometric view of the trigger.

[0033] Figure 10 This is a partial elevation view showing the air cap and valve cylinder interface.

[0034] Figure 11A This is an isometric view of the valve cylinder used for the spray gun.

[0035] Figure 11B This is an elevation end view of the spray control component 338. Detailed Implementation

[0036] This disclosure relates to fluid spraying. More specifically, this disclosure relates to component assemblies for a spray gun. A trigger is movable between an engaged state and a disengaged state, in which the trigger is movable to open a first valve of the spray gun, and in the disengaged state, the trigger is spaced apart from a first valve assembly such that the first valve assembly can travel axially past the trigger along the spraying axis. A trigger mount engages the trigger to support it on the gun body. The trigger mount is actuated between a held state and an installed state, in which the trigger mount holds the trigger on the gun body and is in the engaged state, and in the installed state, the trigger can be installed on or removed from the gun body.

[0037] The spray gun according to this disclosure is configured to discharge a spray of a coating fluid, such as liquid paint, varnish, varnish, fine finish, high-gloss finish, water-based coating, solvent-based coating, etc. The spray gun can be used to apply coatings to surfaces, furniture, cabinets, appliances, equipment, assembly parts, etc. The spray gun also discharges compressed gas. The atomizing portion of the compressed gas is configured to atomize the coating fluid and complete the atomization of a fan-shaped tail, thereby preventing undesirable tails. The shaping portion of the compressed gas is configured to shape the spray pattern. The coating fluid is discharged through a nozzle, and the compressed gas is discharged through an air cap surrounding the nozzle. Atomized gas is discharged each time the spray gun is actuated to the spraying state, and the fan-shaped gas can be set by the user between no fan gas and maximum flow rate.

[0038] According to various aspects of this disclosure, the trigger mount includes a mount body that interfaces with the trigger to pivotally support the trigger on the gun body. The mount body is actuable relative to the trigger to place the trigger mount in a held state and an installed state. The mount body can be actuated via a single input to detach the trigger from the gun body. The mount body can be actuated via a single input to attach the trigger to the gun body. The mount body can be switched along an axis in a single direction to connect the trigger to the gun body and can be moved in the opposite direction to disconnect the trigger from the gun body.

[0039] The trigger may include one or more tool interfaces. The tool interfaces are configured to facilitate the connection and disconnection of components of the spray gun. In some examples, the trigger includes a tool interface configured to engage a portion of the valve's cylinder to facilitate the twisting of the valve's cylinder during installation or removal (e.g., tightening or loosening a threaded interface). In some examples, the tool interface forms a pivot support for the trigger, which supports the trigger on a trigger mount during spraying operations.

[0040] When components are arranged at a common axial position along an axis, they can be considered to overlap radially. A radial line extending orthogonally from the axis will extend through each radially overlapping component. When those components are arranged at a common radial and circumferential position relative to the axis, they can be considered to overlap axially. An axial line parallel to the axis will extend through each axially overlapping component. When those components are arranged at a common radial distance and axial position along an axis, they can be considered to overlap circumferentially, such that a circle centered on the axis passes through each circumferentially overlapping component.

[0041] Figure 1 This is an isometric view of spray gun 312. Figure 2A It is along Figure 1 The section cut by line 2-2 shows a cross-sectional view of the spray valve 322 in the closed state. Figure 2B It is along Figure 1 The section cut by line 2-2 shows a cross-sectional view of the spray valve 322 in the open state. This will be discussed together. Figures 1 to 2B The spray gun 312 is a manual spray gun configured to be held in the user's hand and activated directly by the user to spray the coating fluid.

[0042] The spray gun 312 includes a gun body 334, an air cap assembly 326, a spray control assembly 338, a flow control assembly 476, a fan valve 478, a trigger 480, and a metering valve 482. The gun body 334 includes a main body 350, a gun mount 352, and a handle 484. The air cap assembly 326 includes an air cap 392 and a cap retainer 394. The flow control assembly 476 includes a displacement limiter 336, a needle return mechanism 346, a valve seal 486, and a valve spring 488. The displacement limiter 336 includes a limiter housing 356, a knob 358, a positioner 360, and a stop 362. The needle return mechanism 346 includes a return mechanism block 347 and a return mechanism spring 348. The spray control assembly 338 includes a spray valve 322, a nozzle 328, a valve body 364, a needle 366, a support 368, a needle seal 370, a valve body seal 372, and a fluid port 374. The valve body 364 includes a housing 376 and a seal retainer 378. The housing 376 includes an inlet housing 376a and an outlet housing 376b. The needle 366 includes a needle tip 380, a needle body 382, ​​and a needle head 386.

[0043] The spray gun 312 sprays along the spraying axis SA. This axis also represents the upstream side or upstream direction and the downstream side or downstream direction, where the spraying fluid typically flows from the upstream direction to the downstream direction. In the example shown, the downstream direction is the second axial direction AD2, and the upstream direction is the first axial direction AD1. In some examples, the spray gun 312 may discharge the spraying fluid in a fan shape.

[0044] The spray gun 312 is configured as a manual spray gun, held in the user's hand and actuated by the user between spraying and non-spraying states. The user can hold the handle 484 to aim and manipulate the spray gun 312. The user can hold the spray gun 312 with one hand and actuate it between spraying and non-spraying states. The user can press the trigger 480 with the fingers of the hand holding the handle 484 to actuate the spray gun 312 between spraying and non-spraying states. The trigger 480 controls the actuation of the spray valve 322 and the air valve 490 to their respective open states.

[0045] The spray gun 312 is configured to receive a flow of spray fluid and compressed air, and to discharge atomized spray of the spray fluid for application onto a target surface. The spray gun 312 is configured as a manual spray gun, but it should be understood that not all examples are so limited. The gun body 334 supports the other components of the spray gun 312.

[0046] The main body 350 supports other components of the spray gun 312. The main body 350 includes a front block 494 and a rear block 496. The front block 494 at least partially defines the flow path of both the spray fluid and compressed gas through the spray gun 312. The rear block 496 at least partially defines the flow path of the compressed gas through the spray gun 312. In the example shown, the rear block 496 does not define any passage for the spray fluid and is not exposed to the spray fluid. A trigger gap 498 is axially arranged between the front block 494 and the rear block 496. The trigger gap 498 opens toward the bottom side of the spray gun 312. The trigger gap 498 is closed by a portion of the main body 350 spanning between the front block 494 and the rear block 496.

[0047] The handle 484 extends from the body 350. The handle 484 protrudes from the underside of the body 350. In the example shown, the handle 484 extends from the rear block 496 of the body 350. An air inlet passage 500 is formed within and passes through the handle 484. The air inlet passage 500 provides a flow path for compressed gas to enter the gun body 334 and flow into an air passage within the body 350.

[0048] Metering valve 482 is mounted to gun body 334. Metering valve 482 is configured to connect to an air hose (e.g., air hose 32). Figure 1 The air hose supplies compressed air to the spray gun 312. A metering valve 482 is mounted to the handle 484. The metering valve 482 is configured to control the flow of compressed air to the spray gun 312. The metering valve 482 is actuated between an open state and a closed state, in which compressed air can flow into the spray gun 312, and in a closed state, in which the flow of compressed air is prevented from flowing into the spray gun 312. The metering valve 482 is placed and maintained in a desired state. The metering valve 482 is not a check valve actuated between the open and closed states by the flow of compressed air.

[0049] The bore 406 extends axially through the gun body 334. The bore 406 opens at both the front end 335 and the rear end 337 of the spray gun 312. The bore 406 extends along the spray axis SA. The bore 406 extends axially through the front block 494, opening on both axial sides of the front block 494. The portion of the bore 406 in the front block 494 opens at the front end 335 and leads to the trigger gap 498. The bore 406 extends axially through the rear block 496, opening on both axial sides of the rear block 496. The portion of the bore 406 in the rear block 496 opens at the rear end 337 and leads to the trigger gap 498.

[0050] A portion of the bore 406 in the rear block 496 is located directly downstream of the air inlet passage 500 and defines a portion of the compressed gas flow path through the gun body 334. An air valve 490 divides the bore 406 in the rear block 496 into an upstream passage and a downstream passage. The upstream passage is fluidly connected to the air inlet passage 500 throughout operation, the downstream passage is fluidly connected to the air inlet passage 500 when the air valve 490 is open, and the downstream passage is fluidly disconnected from the air inlet passage 500 when the air valve 490 is closed.

[0051] A common channel 502 extends from the portion of the bore 406 in the rear block 496 and forms part of the compressed air flow path through the spray gun 312. When the air valve 490 is open, the common channel 502 receives compressed air from the bore 406 in the rear block 496. The common channel 502 routes the compressed air to the atomizing air channel 504 (whose inlet is shown) and the shaping air channel 506. The atomizing channel 504 extends to the aperture 420a to output the atomized portion of the compressed air adjacent to the baffle 418a. The shaping air channel 506 extends to the aperture 420b to output the shaped portion of the compressed air adjacent to the baffle 418b.

[0052] A sector valve 478 is mounted to the gun body 334. The sector valve 478 is actuable between an open and closed state, in which the forming air passage 506 is open and fluidly connected to a common passage 502, allowing the forming portion of compressed air to flow to the air cap 392; and in the closed state, the forming air passage 506 is fluidly disconnected from the common passage 502, preventing the forming portion of compressed air from flowing to the air cap 392. The sector valve 478 includes a sector valve shaft 508 with a shaft head that can engage with a support within the gun body 334 to place the sector valve 478 in the closed state. The sector valve shaft 508 can be accessed from outside the gun body 334 for user operation. In the example shown, the sector valve shaft 508 is mounted to a support housing 510 via a threaded interface, wherein the support housing 510 is mounted to the gun body 334. The sector valve shaft 508 rotates relative to the support housing 510 to displace the sector valve shaft 508 and place the sector valve 478 in an open or closed state. The atomizing air passage 504 is fluidly connected to the common passage 502 regardless of the state of the sector valve 478. Thus, the spray gun 312 is configured to discharge atomized air during any spraying operation, while the forming air can be turned on or off depending on the state of the sector valve 478.

[0053] Gun mount 352 is disposed within body 350. In the example shown, gun mount 352 is disposed within front block 494 of body 350. Gun mount 352 may be press-fitted, threaded, or otherwise secured within body 350. Gun mount 352 at least partially defines the flow path of spray fluid through spray gun 312. Because gun mount 352 is exposed to spray fluid during operation, it can be considered to form a wet component of spray gun 312.

[0054] The spray fluid connector 512 is mounted to the gun body 334. In the example shown, the spray fluid connector 512 is mounted to the body 350. In the example shown, the spray fluid connector 512 is mounted to the front block 494 of the body 350. The spray fluid connector 512 is configured to connect to a hose (e.g., a fluid hose) that supplies spray fluid to the spray gun 312 under pressure. The spray fluid connector 512 may extend into and interface with the gun mount 352. The spray fluid connector 512 does not extend to axially overlap with the spray control assembly 338. The fact that the spray fluid connector 512 does not axially overlap with the spray control assembly 338 along the spray axis SA allows the spray control assembly 338 to be moved into or out of the bore 406 during installation and removal without the user having to manipulate the spray fluid connector 512, as discussed in more detail below.

[0055] An air cap assembly 326 is disposed at the first axial end of the gun body 334. The air cap assembly 326 is mounted to the front block 494. The air cap 392 is configured to discharge both atomizing air and shaping air. A central orifice 408 is formed through the air cap 392. The central orifice 408 is disposed on the spray axis SA. The central orifice 408 is configured to discharge atomizing air from the air cap 392. A shaping orifice 410 is formed in the horn 446 of the air cap 392. The shaping orifice 410 is configured to discharge shaping air from the air cap 392.

[0056] Air cap 392 is mounted to gun body 334 via cap retainer 394. Cap retainer 394 extends over air cap 392 and interfaces with gun body 334 to secure air cap 392 to gun body 334. In the example shown, cap retainer 394 is connected to front block 494. Cap retainer 394 can be mounted to gun body 334 via a quick-connect interface; however, it is understood that other connection types are also feasible, such as threaded connections. In the example shown, a portion of cap retainer 394 is configured to move axially relative to the spray axis SA to lock and unlock air cap 392 to gun body 334.

[0057] The spray control assembly 338 is configured to control the discharge of spray fluid from the spray gun 312. The spray control assembly 338 is mounted to the gun body 334. In the example shown, the spray control assembly 338 is mounted within the front block 494 of the body 350. In the example shown, the spray control assembly 338 extends entirely axially through the front block 494. In the example shown, the spray control assembly 338 protrudes beyond the front block 494 in both the first axial direction AD1 and the second axial direction AD2.

[0058] The spray control assembly 338 is at least partially disposed within the gun body 334. The spray control assembly 338 forms a fluid valve cylinder, which can be installed into and removed from the gun body 334 as an integral component. The spray control assembly 338 is a single module that can be inserted into the bore 406 through a front end 335, and can be removed as a single module from the bore 406 through the front end 335.

[0059] The valve body 364 supports other components of the spray control assembly 338. The valve body 364 is at least partially disposed within the gun body 334. The valve body 364 is secured within the gun body 334 to secure the spray control assembly 338 relative to the gun body 334. In the illustrated example, the valve body 364 is mounted to the gun mount 352 at a location within the front block 494. The valve body 364 extends into the gun mount 352 to interface with it. In the illustrated example, the valve body 364 extends entirely axially through the gun mount 352, such that the valve body 364 protrudes beyond the gun mount 352 in both the first axial direction AD1 and the second axial direction AD2. In the illustrated example, the valve body 364 is connected to the gun mount 352 via a threaded interface.

[0060] The valve body 364 includes a housing 376 configured to interface with a portion of the gun body 334 to mount the spray control assembly 338 to the gun body 334, and the valve body 364 includes a seal retainer 378 mounted to the housing 376. The housing 376 and the seal retainer 378 form the exterior of the valve body 364. In the example shown, a nozzle 328 is formed by the housing 376. The nozzle 328 is formed at a first axial end of the housing 376, and the seal retainer 378 is mounted to a second axial end of the housing 376 opposite to the first axial end. Spray fluid is discharged through a spray orifice 329. The nozzle 328 extends into the spray orifice 329 through which spray fluid is discharged. The spray orifice 329 is formed at the axial end of the spray control assembly 338 in a second axial direction AD2.

[0061] A valve cylinder mount 412 is formed on the exterior of the valve cylinder body 364. In the example shown, the valve cylinder mount 412 is formed on the housing 376. The valve cylinder mount 412 is configured to interface with a portion of the gun body 334 to secure the spray control assembly 338 to the gun body 334. In the example shown, the valve cylinder mount 412 is formed by threads on the exterior of the outlet housing 376a. The valve cylinder mount 412 is configured to engage with threads on the gun mount 352 to secure the spray control assembly 338 to the gun body 334.

[0062] The housing 376 at least partially defines a flow path for the spray fluid to flow to the nozzle 328 and a flow path for the compressed air to flow to the air cap 392. In the example shown, the housing 376 is formed by an inlet housing 376b and an outlet housing 376a mounted together. The inlet housing 376b is configured to receive the spray fluid into the spray control assembly 338. The outlet housing 376a is configured to discharge the spray fluid from the spray control assembly 338. The inlet housing 376b and the outlet housing 376a are joined together to form the housing 376. In the example shown, the inlet housing 376b and the outlet housing 376a are joined together via a threaded interface. In the example shown, the inlet housing 376b includes a male thread configured to engage with a female thread formed on the outlet housing 376a. A portion of the inlet housing 376b extends into the outlet housing 376a to form a threaded interface between the two.

[0063] Baffle 418a extends radially from the outside of valve body 364. Baffle 418a extends radially from housing 376. In the example shown, baffle 418a extends radially from outlet housing 376a. In the example shown, baffle 418a is formed as a flange extending radially outward from valve body 364. In the example shown, baffle 418a extends annularly around valve body 364. Baffle 418a may be integrally formed with other parts of valve body 364. In some examples, baffle 418a may be integrally formed with other parts of valve body 364. In the example shown, baffle 418a is integral with housing 376. In the example shown, baffle 418a is integral with outlet housing 376.

[0064] Baffle 418a is configured to flow with a first portion of compressed air in a second axial direction AD2, distributing the first portion of compressed air annularly around the spray axis SA. In the example shown, the first portion of compressed air forms atomized air. Inner air chamber 414 is configured to route the first portion of compressed air to the central orifice 408 of air cap 392. Inner air chamber 414 is formed around the spray axis SA. Inner air chamber 414 is arranged around the exterior of valve body 364. In the example shown, a portion of inner air chamber 414 is radially enclosed by valve body 364, such that the radially outer side of this portion of inner air chamber 414 is defined by valve body 364, and the radially inner side of this portion of inner air chamber 414 is defined by valve body 364. The portion of inner air chamber 414 radially enclosed by valve body 364 is the downstream portion of inner air chamber 414. Inner air chamber 414 is axially arranged between gun mount 352 and central orifice 408. The downstream portion of the inner air chamber 414 is axially arranged between the air passage 422 and the central orifice 408.

[0065] The atomized portion of compressed air passes through orifice 420a on one axial side of baffle 418a and enters the inner air chamber 414. The atomized portion of compressed air flows along the second axial direction AD2 across baffle 418a, through air passage 422 in valve body 364, and downstream to central orifice 408. A first portion of the compressed air exits the spray gun 312 through central orifice 408 in air cap 392. This first portion of the compressed air exits the spray gun 312 through an annular ring formed around the portion of valve body 364 that defines the nozzle 328.

[0066] A baffle 418b extends radially from the outside of the valve body 364. A baffle 418b extends radially from the housing 376. In the example shown, the baffle 418b extends radially from the outlet housing 376b. In some examples, the baffle 418b may be formed separately from and mounted to the housing 376. In some examples, the baffle 418b may be integrally formed with other parts of the valve body 364. In some examples, the baffle 418b may be integrally formed with other parts of the valve body 364. However, it should be understood that not all examples are so limited. For example, the baffle 418b may be formed separately from the housing 376 and mounted within the front block 494, such that the spray control assembly 338 can move relative to the baffle 418b during installation and removal. The baffle 418b may be mounted within the gun body 334, such that the baffle 418b is not installed with or removed from the gun body 334 along with the spray control assembly 338.

[0067] Baffle 418b is configured to distribute the second portion of compressed air annularly around the spray axis SA as the second portion of compressed air flows in the second axial direction AD2. In the example shown, the second portion of compressed air forms forming air. Outer air chamber 416 is configured to route the second portion of compressed air to forming orifice 410. Outer air chamber 416 is formed around the spray axis SA. Outer air chamber 416 is arranged around the exterior of valve body 364. In the example shown, a portion of outer air chamber 416 radially overlaps with a portion of inner air chamber 414. Outer air chamber 416 is arranged radially outward from inner air chamber 414.

[0068] The forming portion of compressed air enters the outer air chamber 416 through an orifice 420b on one axial side of the baffle 418b. The baffle 418b distributes the forming portion of compressed air around the spray axis SA, and this forming portion flows along the second axial direction AD2 and downstream to the forming orifice 410. The forming portion of compressed air exits the spray gun 312 through the forming orifice 410 in the air cap 392.

[0069] A collar 424 is formed on the outlet housing 376b. The collar 424 extends radially outward relative to the rest of the outlet housing 376b. The collar 424 is axially arranged between the nozzle 328 and the baffle 418a. The collar 424 can extend completely circumferentially around the spray axis SA.

[0070] Air passage 422 extends through collar 424. Air passage 422 is configured to route atomized portion of compressed air from an upstream portion of inner air chamber 414 to a downstream portion of inner air chamber 414. In the example shown, a plurality of air passages 422 are formed through collar 424. An array of air passages 422 may be arranged annularly around spray axis SA.

[0071] A ring 426 protrudes from the main body portion of the collar 424 forming the air passage 422 along a second axial direction AD2. The ring 426 is radially arranged between the inner air chamber 414 and the outer air chamber 416. The ring 426 protrudes to engage with the axially inner side of the air cap 392 and seals with the air cap 392 to fluidly separate the inner air chamber 414 from the outer air chamber 416. In the example shown, the ring 426 defines portions of the inner air chamber 414 and the outer air chamber 416. The portion of the inner air chamber 414 radially enclosed by the valve body 364 is radially arranged between the ring 426 and the outlet housing 376a.

[0072] A valve cylinder seal 372 is disposed between the valve cylinder body 364 and the gun body 334. The valve cylinder seal 372 fluidly separates the wet and dry portions within the gun body 334. In the example shown, the valve cylinder seal 372 is disposed on the exterior of the valve cylinder body 364. In the example shown, the valve cylinder seal 372 is disposed between the valve cylinder body 364 and the gun mount 352 and engages with both the valve cylinder body 364 and the gun mount 352. The valve cylinder seal 372 axially encompasses the portion of the spray fluid flow path located outside the valve cylinder body 364 and inside the gun mount 352.

[0073] In the example shown, a sealing groove 428 is formed on the valve body 364. A valve body seal 372 is disposed in the sealing groove 428 such that the valve body seal 372 is mounted on the valve body 364. A first sealing groove in the sealing groove 428 is axially disposed between the nozzle 328 and the fluid port 374. A second sealing groove in the sealing groove 428 is axially disposed between the fluid port 374 and the trigger gap 498.

[0074] A fluid passage 430 is axially arranged between valve body seals 372. The fluid passage 430 extends completely circumferentially around the valve body 364. The fluid passage 430 defines an annular flow path for the spray fluid to flow completely around the valve body 364 to enter the fluid port 374 and then into the flow chamber 432. The fluid passage 430 facilitates the entry of the spray fluid into the flow chamber 432 from a position circumferentially arranged around the valve body 364 and the spray axis SA. The flow path from the fluid passage 430 through the fluid port 374 and into the flow chamber 432 does not restrict the flow relative to the outflow through the nozzle 328, thereby contributing to efficient and effective output of the spray fluid used for atomization during spraying operations.

[0075] A fluid port 374 is formed through the valve body 364. The fluid port 374 forms a flow path within the valve body 364 for the spray fluid to enter the flow chamber 432. In the example shown, a plurality of fluid ports 374 are arranged around the valve body 364. Each fluid port 374 includes an external opening located outside the valve body 364, allowing the spray fluid to enter the fluid port 374 from the fluid passage 430, and each fluid port 374 includes an internal opening opening into and allowing the spray fluid to enter the flow chamber 432. The fluid ports 374 are axially arranged between valve body seals 372. The fluid ports 374 are spaced apart from the valve body mount 412 in a first axial direction AD1. The fluid ports 374 are arranged on the axial side of the mating interface between the valve body 364 and the gun body 334 opposite the nozzle 328.

[0076] A seal retainer 378 is connected to a housing 376. In the example shown, the seal retainer 378 is mounted to the housing 376 via a threaded interface formed between the seal retainer 378 and the housing 376. The seal retainer 378 is disposed at the axial end of the housing 376 opposite the nozzle 328. The seal retainer 378 extends into the housing 376 to radially overlap the housing 376. The seal retainer 378 is configured to interface with a needle seal 370 to retain the needle seal 370 within the valve body 364.

[0077] Needle seal 370 is configured to interface with the exterior of needle 366. Needle seal 370 can be considered to form a dynamic seal as needle 366 moves axially relative to needle seal 370 during operation. Needle seal 370 can be formed as a sealing assembly comprising multiple individual sealing elements. Needle seal 370 is disposed inside valve body 364. Flow chamber 432 of spray control assembly 338 extends axially between nozzle 328 and needle seal 370. As needle 366 moves between an open and closed state, needle seal 370 forms a sliding seal with the exterior of needle 366. Needle seal 370 engages with the exterior of needle 366 to suppress leakage of spray fluid along the first axial direction AD1 and out of valve body 364.

[0078] A spray valve 322 is formed between the needle 366 and the support 368. In the example shown, the support 368 is formed by the valve body 364. When the spray valve 322 is in the closed state, the needle 366 engages with the support 368, and when the spray valve 322 is in the open state, the needle 366 disengages from the support 368. The needle 366 is configured as a movable part of the spray valve 322.

[0079] A needle 366 is at least partially disposed within the valve body 364. The needle 366 is configured to move along the spraying axis SA to actuate the spraying valve 322 between an open state and a closed state. The needle 366 is movable along the spraying axis SA and relative to the support 368 to place the spraying valve 322 in an open state and a closed state.

[0080] The needle tip 380 is configured to engage with the support 368 to place the spray valve 322 in a closed state. The needle tip 380 is disposed at one axial end of the needle 366. The needle body 382 extends axially from the needle tip 380. In the example shown, the needle tip 380 is formed separately from the needle body 382 and is connected to the needle body 382, ​​for example, via a threaded interface. However, it is understood that not all examples are so limited. For example, the needle tip 380 and the needle body 382 may be formed integrally.

[0081] The needle body 382 extends from the needle tip 380 along a first axial direction AD1. The needle body 382 extends from inside the flow chamber 432 to outside the valve body 364. The needle body 382 extends through and engages with the needle seal 370. The engagement of the needle body 382 with the needle seal 370 seals the axial end of the flow chamber 432.

[0082] The needle tip 386 is located at the axial end of the needle body 382 opposite to the needle tip 380. The needle tip 386 has a larger diameter than the needle body 382. In the example shown, the needle 366 can be considered to have a neck with the same diameter as the needle body 382.

[0083] A connector 492 is mounted on the needle body 382. The connector 492 is disposed on the needle body 382 between the needle tip 386 and the valve body 364. The connector 492 is located outside the valve body 364. The connector 492 straddles the needle body 382 but is not fixed to it, allowing the connector 492 to slide axially relative to the needle body 382. The size of the opening through the connector 492 is configured such that the needle tip 386 cannot travel through the connector 492.

[0084] The connector 492 is arranged on the side of the trigger 480 opposite to the valve body 364. The connector 492 is sized such that when the trigger 480 is actuated to allow spraying from the spray gun 312, the trigger 480 cannot travel past the connector 492. Instead, the trigger 480 interfaces with the connector 492 such that the trigger 480 can displace the connector 492 along a first axial direction AD1. The trigger 480 displaces the connector 492 so that it engages with the needle 386, and then drives the needle 366 along the first axial direction AD1 to actuate the spray valve 322 to the open state. Although the spray control assembly 338 is described as including the connector 492, it should be understood that not all examples are so limited.

[0085] Trigger 480 is mounted on gun body 334 via trigger mount 600. Trigger mount 600 is actuable relative to gun body 334 to connect trigger 480 to gun body 334 and to disconnect trigger 480 from gun body 334. The following is about... Figures 3A to 4C The trigger mount 600 will be discussed in more detail.

[0086] Flow control assembly 476 is configured to control the flow of compressed air through spray gun 312. Flow control assembly 476 includes a sealing member configured to move along the spray axis SA to actuate air valve 490 between an open and closed state, in which compressed air can flow through air valve 490 and downstream to air cap 392, and in which the compressed air is prevented from flowing downstream to air cap 392. In the illustrated example, valve seal 486 forms a movable valve component of air valve 490. In the illustrated example, air valve 490 is formed between flow control assembly 476 and gun body 334. In the illustrated example, the air support 514 engaged by the movable valve component of air valve 490 is formed by gun body 334. However, it is understood that not all examples are so limited. For example, the flow control assembly 476 may include a housing forming an air support 514 of the air valve 490, such that both the support defining the air valve 490 and the movable valve member are formed as components of the flow control assembly 476.

[0087] The flow control assembly 476 is also configured to manage the flow of the spraying fluid through the spray gun 312, but this flow control assembly 476 does not contact the drying components of the spraying fluid. The flow control assembly 476 manages the flow of the spraying fluid by limiting the displacement distance of the needle 366 in the first axial direction AD1. The flow control assembly 476 thereby sets the distance that the needle 366 can be displaced from the support 368, thereby setting the opening size of the spray valve 322. The flow control assembly 476 also manages the flow of the spraying fluid by actuating the spray valve 322 from an open state to a closed state.

[0088] The flow control assembly 476 is arranged coaxially with the spray control assembly 338. The flow control assembly 476 extends along the spray axis SA. The flow control assembly 476 is mounted to the gun body 334. In the example shown, the flow control assembly 476 is mounted within the rear block 496 of the gun body 334. In the example shown, the flow control assembly 476 is directly mounted to the rear block 496. In the example shown, the flow control assembly 476 is mounted to the gun body 334 via a threaded interface; however, it is understood that other connection types are also feasible.

[0089] The flow control assembly 476 extends axially through the portion of the bore 406 formed in the rear block 496. The flow control assembly 476 is mounted to the rear block 496 such that it protrudes beyond the rear block 496 in a first axial direction AD1 and a second axial direction AD2. The flow control assembly 476 protrudes beyond the rear end 337 of the spray gun 312. A portion of the flow control assembly 476 protrudes into the trigger gap 498 formed between the front block 494 and the rear block 496.

[0090] The flow control assembly 476 is configured to be mounted to the spray gun 312 as a single integral component. The flow control assembly 476 forms a flow valve cylinder that can be installed and removed as a single module. This single module can be installed via the rear end 337 and can be removed via the rear end 337. The flow control assembly 476 and the spray control assembly 338 are installed and removed in opposite axial directions. During installation, the spray control assembly 338 moves along a first axial direction AD1, and during removal, the flow control assembly 476 moves along the first axial direction AD1. During installation, the flow control assembly 476 moves along a second axial direction AD2, and during removal, the spray control assembly 338 moves along the second axial direction AD2. The spray control assembly 338 and the flow control assembly 476 move axially toward each other during installation and move axially away from each other during removal.

[0091] Displacement limiter 336 forms part of flow control assembly 476. Displacement limiter 336 is mounted to gun body 334. Displacement limiter 336 is mounted to rear block 496 at a location within rear block 496. Displacement limiter 336 is arranged at the axial end of spray gun 312 opposite to nozzle 328. In the example shown, displacement limiter 336 is mounted to gun body 334 to secure other components of flow control assembly 476 to gun body 334. The interface between displacement limiter 336 and gun body 334 secures flow control assembly 476 along spray axis SA. In the example shown, the interface between displacement limiter 336 and gun body 334 is the only mechanical connection holding flow control assembly 476 to gun body 334.

[0092] A limiter housing 356 is mounted to the gun body 334. In the example shown, the limiter housing 356 is mounted to the rear block 496 of the gun body 334. The limiter housing 356 is partially disposed within the gun body 334 and partially disposed outside the gun body 334. A limiter bore 440 extends axially through the limiter housing 356. The limiter bore 440 is coaxially disposed on the spray axis SA. In the example shown, the limiter bore 440 extends entirely axially through the limiter housing 356.

[0093] Positioner 360 is at least partially disposed within limiter housing 356. Stop 362 is mounted to positioner 360. In the example shown, positioner 360 includes external threads that engage with internal threads formed on stop 362. Stop 362 is at least partially disposed within limiter bore 440. Stop 362 is keyed to limiter housing 356 such that it does not rotate on the spray axis SA. For example, at least a portion of limiter bore 440 may include a non-circular cross-section cut in a plane normal to spray axis SA, and the outer surface of stop 362 may have the same cross-sectional shape as the surface of limiter bore 440. In some examples, the outer surface of stop 362 may be faceted, and limiter bore 440 may be similarly faceted to mate with stop 362. Stop 362 and limiter bore 440 may be hexagonally cut, among other options. The keyed interface prevents the stop 362 from rotating along the spraying axis SA due to the rotation of the positioner 360. Instead, due to the threaded interface between the positioner 360 and the stop 362, rotation of the positioner 360 will cause the stop 362 to shift axially along the spraying axis SA.

[0094] The stop 362 is configured to interface with the needle return mechanism 346 to limit the displacement of the needle return mechanism 346, and thereby limit the displacement of the needle 366 in the second axial direction AD2. The stop 362 is configured to limit the maximum opening distance of the spray valve 322. The stop 362 limits the maximum distance that the needle 366 can move away from the support 368 and relative to the support 368 to open the spray valve 322.

[0095] A knob 358 is mounted on the positioner 360. The knob 358 is fixed to the positioner 360 such that rotation of the knob 358 causes rotation of the positioner 360. The knob 358 is located on the exterior of the gun body 334. The knob 358 is also located on the exterior of the limiter housing 356. A user can access or manipulate the knob 358 to rotate the positioner 360 and displace the stop 362 to adjust the maximum opening distance.

[0096] A needle return device 346 is disposed within the gun body 334. The needle return device 346 is at least partially disposed within the flow control assembly 476. In the example shown, the needle return device 346 is arranged coaxially with the displacement limiter 336. In the example shown, the needle return device 346 is at least partially disposed within the limiter bore 440. A return device block 347 extends axially into the limiter bore 440 of the limiter housing 356. The needle return device 346 is configured to interface with the needle 366 and the biasing needle 366 in the second axial direction AD2 and to engage with the support 368.

[0097] The return block 347 is a portion of the needle return unit 346 that interfaces with the needle 366. The return block 347 is movable along the spray axis SA. The return block 347 is independent of and not connected to the valve seal 486. The valve seal 486 and the return block 347 are movable relative to each other along the spray axis SA.

[0098] The return rod 400 of the return block 347 extends along the second axial direction AD2 and is at least partially disposed in the needle bore 516 of the valve seal 486. The return rod 400 is configured to abut and engage with the needle 366. In the example shown, the return rod 400 engages with the needle 386. In the example shown, the return rod 400 abuts against the needle 386 but is not fixed to it. The return rod 400 interfaces with the face of the needle 386 oriented along the first axial direction AD1.

[0099] Return flange 402 extends radially outward from the outside of return block 347. Return flange 402 provides a support surface to which return spring 348 engages. Return body 404 forms a portion of pin returner 346 extending from return flange 402 in a first axial direction AD1. Return body 404 is disposed within return spring 348 and can assist in aligning return spring 348 relative to pin returner 346. Return body 404 can be considered as forming a spring guide that assists in aligning return spring 348 on the spray axis SA.

[0100] A return spring 348 is disposed within the gun body 334 and engages with the return block 347. In the example shown, the return spring 348 is disposed within the flow control assembly 476 such that it is isolated from and not exposed to the compressed air flowing through the spray gun 312. In the example shown, the return spring 348 is radially disposed within the valve seal 486 and extends into the limiter bore 440. In the example shown, the return spring 348 engages with the return flange 402 of the return block 347. The return spring 348 also engages with the displacement limiter 336. In the example shown, the return spring 348 is supported on the stop 362. The return spring 348 is configured to bias the return block 347, thereby biasing the needle 366 in the second axial direction AD2 due to the engagement of the return rod 400 with the needle 386. The return spring 348 is configured to bias the needle 366 into engagement with the support 368 to place the spray valve 322 in the closed state.

[0101] The return spring 348 is positioned outside the flow path of the spray fluid through the spray gun 312. The return spring 348 is a drying component that is not exposed to the spray fluid during operation. The spray control assembly 338 does not include any springs in the flow chamber 432. In the example shown, the spray control assembly 338 does not include any springs as part of it. The spray control assembly 338 can be installed and removed as a single module without any springs. The only spring applying bias to the needle 366 is the return spring 348, which does not directly interface with the needle 366. Instead, the return spring 348 is indirectly connected to the needle 366 via an intermediate needle returner 346. The return spring 348 applies bias to the needle returner 346, and the needle returner 346 applies bias to the needle 366. The needle 366 is part of a first module that can be mounted to the gun body 334, and the return spring 348 is part of a second module that can be mounted to the gun body 334.

[0102] A valve seal 486 is at least partially disposed within the gun body 334. The valve seal 486 extends along the spray axis SA. In the example shown, the valve seal 486 is hollow, such that a channel extends entirely axially through it. This channel leads into the interior of the valve seal 486 along a first axial direction AD1 and into the nozzle 328 along a second axial direction AD2. The valve seal 486 includes a seal body 518, a seal shoulder 520, and a valve stem 522.

[0103] The valve stem 522 extends along the spraying axis SA. In the example shown, the valve stem 522 is formed as a cylinder, but it should be understood that not all examples are so limited. In the example shown, the valve stem 522 projects axially beyond the bore 406 and into the trigger gap 498. The valve stem 522 extends through and engages with the air seal 524a. As the valve stem 522 can slide axially relative to the air seal 524a, it forms a sliding seal with the air seal 524a. In the example shown, the air seal 524a is supported by the rear block 496. In the example shown, the air seal 524a is formed as a U-cup seal, but it should be understood that not all examples are so limited. The sealing interface between the air seal 524a and the valve stem 522 prevents compressed air from leaking out of the rear block 496 in the second axial direction AD2.

[0104] Valve seal 486 holds needle return 346 inside flow control assembly 476. The diameter of needle bore 516 through valve stem 522 is smaller than the diameter of return flange 402 of needle return 346. Return flange 402 will engage with the inside of seal shoulder 520 to prevent further movement of needle return 346 in the second axial direction AD2, thereby holding return block 347 inside flow control assembly 476.

[0105] Needle 366 and needle return mechanism 346 are engaged at a location within valve seal 486. Specifically, needle 366 and return mechanism block 347 are engaged at a location within valve shaft 522. Needle 366 and return mechanism block 347 are engaged within needle bore 516. Valve shaft 522 can position return mechanism block 347 and needle 366 on the spraying axis SA to maintain concentricity between return mechanism block 347 and needle 366. Maintaining axial alignment between return mechanism block 347 and needle 366 reduces wear on needle 366 by driving needle 366 on axis SA, thereby preventing wear on needle 366 or support 368 that may occur due to non-coaxial engagement between needle 366 and support 368.

[0106] A sealing shoulder 520 extends between and connects the valve stem 522 and the sealing body 518. The sealing shoulder 520 extends radially outward between the valve stem 522 and the sealing body 518. The diameter of the valve seal 486 increases along the sealing shoulder 520 between the valve stem 522 and the sealing body 518. In the example shown, the sealing shoulder 520 is inclined between the valve stem 522 and the sealing body 518, such that the sealing shoulder 520 extends axially and radially between the valve stem 522 and the sealing body 518.

[0107] The seal body 518 extends from the seal shoulder 520 along a first axial direction AD1. The seal body 518 extends from the seal shoulder 520 and into the limiter housing 356. In the example shown, the seal body 518 has a larger diameter than the valve stem 522. In the example shown, the seal body 518 is cylindrical, but it should be understood that not all examples are so limited.

[0108] The seal body 518 extends into the limiter housing 356 and engages with the air seal 524b. The air seal 524b engages with the outer surface of the seal body 518. In the example shown, the air seal 524b is supported by the limiter housing 356. The engagement of the air seal 524b with the seal body 518 and the limiter housing 356 suppresses leakage of compressed air between them in the first axial direction AD1. The air seal 524b seals the interior of the flow control assembly 476 and prevents compressed air from flowing into the interior of the flow control assembly 476.

[0109] When the air valve 490 is in the closed state, the valve seal 486 engages with the air support 514, and when the air valve 490 is in the open state, the valve seal 486 disengages from the air support 514. In the example shown, the flow seal 526 supported by the valve seal 486 is configured to directly interface with the air support 514 to place the air valve 490 in the closed state. In the example shown, the flow seal 526 is supported by a seal shoulder 520. In the example shown, the flow seal 526 is formed separately from and mounted on the valve seal 486. The flow seal 526 is configured to engage with the air support 514 to place the air valve 490 in the closed state. When the air valve 490 is in the open state, the flow seal 526 is spaced apart from the air support 514. Although the flow control assembly 476 is described as including the flow seal 526, it should be understood that not all examples are so limited. For example, valve seal 486 can be configured to directly interface with air support 514 to place air valve 490 in the closed state.

[0110] Valve spring 488 interfaces with valve seal 486 and biases air valve 490 to the closed state. Valve spring 488 biases valve seal 486 in a second axial direction AD2 and biases it to engage with air support 514. Valve spring 488 extends axially between limiter housing 356 and valve seal 486. In the example shown, the seal body 518 of valve seal 486 is arranged radially within valve spring 488 and extends through valve spring 488. Valve spring 488 is arranged outside flow control assembly 476. Valve spring 488 is arranged such that it is exposed to airflow through spray gun 312.

[0111] Valve spring 488 is configured to bias air valve 490 to a closed state. Return spring 348 is configured to bias spray valve 322 to a closed state. In the example shown, both valve spring 488 and return spring 348 are arranged within rear block 496. Both valve spring 488 and return spring 348 are formed as drying components not exposed to the spray fluid flowing through spray gun 312. Valve spring 488 and return spring 348 are arranged coaxially on the spray axis SA. Valve spring 488 and return spring 348 overlap each other radially. Valve spring 488 is arranged radially outside of return spring 348.

[0112] During operation, compressed air is supplied to the spray gun 312 through the air inlet passage 500, and spray fluid is supplied to the spray gun 312 through the spray fluid connector 512. The spray valve 322 and air valve 490 are normally in their respective closed states. Compressed air flows through the air inlet passage 500 and enters the bore 406 in the rear block 496. An axial bias is applied to the valve seal 486 along the second axial direction AD2 by the valve spring 488, which maintains engagement with the air support 514, keeping the air valve 490 closed and preventing compressed air from flowing through it along the second axial direction AD1. Spray fluid flows through the spray fluid connector 512 and enters the fluid passage 430. The spray fluid flows through the fluid port 374 and enters the flow chamber 432 inside the spray control assembly 338. A force is applied to the needle return mechanism 346 by the return spring 348 along the second axial direction AD2, and the needle return mechanism 346 applies a force to the needle 366 along the second axial direction AD2 to bias the needle 366 into engagement with the support 368, thus maintaining the needle 366 in engagement with the support 368. Therefore, the spray valve 322 is in the closed state, thereby preventing the spray fluid from flowing through the nozzle 328.

[0113] To perform spraying, the user presses trigger 480. Trigger 480 moves along a first axial direction AD1 and engages with connector 492. For example, the trigger can pivot about a pivot point passing through the gun body 334. Connector 492 applies an axial driving force to valve seal 486 at valve shaft 522. The force of valve spring 488 is overcome, and valve seal 486 is displaced along the first axial direction AD1. Valve seal 486 disengages from air support 514, and the flow path between valve seal 486 and air support 514 is opened. Valve spring 488 is compressed between valve seal 486 and limiter housing 356. Therefore, air valve 490 is in the open state.

[0114] With air valve 490 open, compressed air flows through air valve 490 and downstream to common channel 502. The compressed air flows through common channel 502 and towards atomizing channel 504 and shaping air channel 506. The atomized portion of the compressed air flows through atomizing channel 504 and exits through the central orifice 408 in air cap 392. If sector valve 478 is open, the shaping portion of the compressed air flows through shaping air channel 506. With sector valve 478 open, the shaping portion of the compressed air flows downstream through shaping air channel 506 and exits from air cap 392 through shaping orifice 410.

[0115] The atomized portion of compressed air flows through atomization channel 504 and into the portion of the bore 406 in the front block 494. The atomized air enters the inner air chamber 414 through orifice 420a. The atomized air encounters baffle 418a, which interrupts the flow and distributes the atomized airflow around the spray axis SA. The atomized air continues past baffle 418a and flows through air channel 422 in the second axial direction AD2. The atomized air exits from air channel 422 and flows through the downstream portion of the inner air chamber 414 to the central orifice 408. The atomized air exits from the central orifice 408 as a ring around the nozzle 328.

[0116] The forming portion of compressed air flows through the forming air passage 506 and encounters a baffle 418b. The baffle 418b interrupts the flow of the forming portion and causes the forming portion to be distributed around the spraying axis SA. The forming air flows through the outer air chamber 416 and flows to the air cap 392. The forming air exits from the forming orifice 410 in the air cap 392.

[0117] Before the spray valve 322 moves to the open position, the air valve 490 moves to the open position. The flow control assembly 476 is configured such that the valve seal 486 is axially displaced before the needle 366 is engaged for axial displacement. The air valve 490 moves to the open position before the spray valve 322 moves to the open position, causing the spray gun 312 to discharge compressed air from the air cap 392 before discharging the spray fluid through the nozzle 328. The discharge of compressed air from the spray gun 312 before discharging the spray fluid ensures that the atomizing air will impinge on and atomize the spray fluid, thereby preventing splashing and splattering of the spray fluid that might otherwise occur.

[0118] In the example shown, the needle 386 is recessed within the valve stem 522 along the first axial direction AD1, such that the connector 492 contacts the valve seal 486 before encountering the needle 386. Thus, the trigger encounters and displaces the valve seal 486 before encountering and displacing the needle 366. In the example where the spray gun 312 includes a valve lock, the valve lock is positioned such that the valve seal 486 is axially displaced before the needle claw encounters and engages the needle 386 to displace the needle 366, thereby ensuring the discharge of atomized air before the sprayed fluid is discharged.

[0119] Trigger 480 continues to shift, and connector 492 (in some examples, valve lock) encounters needle 386, applying an axial driving force to needle 366 along the first axial direction AD1. Needle 366 encounters return block 347 and applies an axial driving force to return block 347. The force of return spring 348 is overcome, and needle 366 and needle return block 346 shift along the first axial direction AD1. Return spring 348 is compressed between needle return block 346 and stop 362. Needle 366 disengages from support 368. Therefore, spray valve 322 is placed in the open state.

[0120] In some examples, valve seal 486 can assist in shifting the spray valve 322 to the open state. Flow control assembly 476 can be configured such that the inner side of seal shoulder 520 engages with the bevel oriented in the second axial direction AD2 of return flange 402. Valve seal 486 can engage with return flange 402 simultaneously with connector 492 engaging needle 386. Thus, connector 492 can apply a driving force to needle 366 at needle 386, and a driving force can be applied to needle return 346 via valve seal 486.

[0121] The displacement of needle 366 in the first axial direction AD1 can be limited by stop 362. Stop 362 can be arranged on the spray axis SA and positioned such that return block 347 encounters stop 362 before needle 366 moves the full possible displacement distance along the first axial direction AD1. Stop 362 provides a hard stop, limiting further axial displacement of return block 347 and needle 366. This prevents trigger 480 from further displacement due to return block 347 encountering stop 362.

[0122] With the spray valve 322 open, the spray fluid flows through the gap between the needle tip 380 and the support 368. The spray fluid flows downstream through the nozzle 328 and exits from the spray gun 312. Atomizing air exiting through the central orifice 408 impacts and atomizes the spray fluid exiting the nozzle 328. The forming air encounters the atomized spray fluid and shapes it into the desired pattern.

[0123] To stop spraying, the user releases trigger 480. Air valve 490 and spray valve 322 are independent, such that air valve 490 is actuated to the closed state independently of spray valve 322. Similarly, air valve 490 and spray valve 322 are independently actuated to their respective open states.

[0124] Valve spring 488 applies a biasing force to valve seal 486 along the second axial direction AD2, causing valve seal 486 to shift along the second axial direction AD2. Return spring 348 applies a biasing force to return block 347 along the second axial direction AD2, causing needle return device 346 to shift along the second axial direction AD2. Needle return device 346 applies a biasing force to needle 366 along the second axial direction AD2, causing needle 366 to shift until needle 366 engages with support 368, thus closing the spray valve 322.

[0125] As discussed above, the spray gun 312 is configured such that the air valve 490 opens before the spray valve 322 opens. The valve seal 486 is displaced a first distance along the spray axis SA in the first axial direction AD1 before the needle 366 begins to move along that direction. Both the valve seal 486 and the needle 366 move together along the spray axis SA a second axial distance. The total displacement of the needle 366 is the second axial distance, and the total displacement of the valve seal 486 is a third axial distance, which is the sum of the first and second axial distances. The third axial distance is greater than the second axial distance.

[0126] Then, valve seal 486 needs to shift a third axial distance to return to closed, while needle 366 needs to shift a shorter second axial distance to return to closed. Spray valve 322 can move to the closed state before air valve 490 moves to the closed state. Spray valve 322 closes before air valve 490 closes, causing spray gun 312 to stop discharging spray fluid before it stops discharging compressed air. Spray gun 312 continues to discharge compressed air when and after it stops discharging spray fluid to prevent splashing and splattering of spray fluid at the end of spraying. Atomizing air is discharged before, during, and after discharging spray fluid, thereby providing high-quality spraying during the continuous discharge of spray fluid from spray control assembly 338.

[0127] The spray gun 312 offers significant advantages. The spray control assembly 338 can be installed as a single, integral component. The spray control assembly 338 can be installed and removed via the front end 335 of the spray gun 312. The user does not need to approach or access other components spaced apart from the spray control assembly 338 in the first axial direction AD1 to enable or disable the drive connection that actuates the needle 366 during operation. Instead, the user can easily and readily access or access the spray control assembly 338 at the front end 335. With the air cap 392 removed and the trigger 480 moved to not obstruct the movement of the connector 492 in the second axial direction AD2, the spray control assembly 338 can be installed or removed simply by manipulating the valve housing 376. Because the spray fluid connector 512 does not extend to interfere with the axial movement of the spray control assembly 338, it is not necessary to manipulate the spray fluid connector 512 for the installation or removal of the spray control assembly 338.

[0128] The spray control assembly 338 does not include any springs for biasing the needle 366. The needle 366 is actuated to the engagement support 368 via a return spring 348, which is located in the rear block 496 and does not directly interface with the needle 366. No springs are arranged in the spray fluid flow path or exposed to the spray fluid. No springs are arranged in the front block 494 to actuate the needle 366. Isolating the springs from the wet portion of the spray gun 312 prevents material buildup on any such springs, which could cause them to stick or otherwise require necessary maintenance.

[0129] The flow control assembly 476 can be installed to or removed from the spray gun 312 as a single integral component. The flow control assembly 476 is a single module that can be installed and removed via the rear end 337 of the spray gun 312. The flow control assembly 476 controls the flow of compressed air and affects the operation of the spray valve 322. The flow control assembly setting pin 366 can be spaced apart from the support 368, thereby controlling the opening size of the spray valve 322 via the displacement limiter 336. The flow control assembly 476 can also actuate the spray valve 322 from an open state to a closed state. The components of the flow control assembly 476 can independently actuate the air valve 490 and the spray valve 322 to a closed state.

[0130] Figure 3A This is a partial isometric view from the first lateral side of the spray gun 312, showing the trigger 480 mounted to the gun body 334. Figure 3B This is a partial isometric view from the second lateral side of the spray gun 312, showing the trigger 480 mounted on the gun body 334. Figure 3C It is along Figure 3A The sectional view is taken by line CC. Figure 4AThis is a partial isometric view from the first lateral side of the spray gun 312, showing the trigger 480 removed from the gun body 334. Figure 4B This is a partial isometric view from the second lateral side of the spray gun 312, showing the trigger 480 removed from the gun body 334. Figure 4C It is along Figure 4B The sectional view is taken by line CC. Figures 3A to 3C A trigger mount 600 is shown in a held state in which the trigger 480 is held on the gun body 334 and is operatively positioned relative to a valve component that can be actuated by the trigger 480. Figures 4A to 4C The trigger mount 600 is shown in an installed state, in which the trigger 480 can be installed onto or removed from the gun body 334. Figures 4A to 4C The trigger 480, removed from the gun body 334, is further shown. Let's discuss it together. Figures 3A to 4C .

[0131] The trigger 480 includes a pulling portion 481; arms 483a, 483b; and a receiving portion 485. A body bore 530 of the gun body 334 is shown. In the example shown, the body bore 530 includes bore portions 532a, 532b, and 532c. A mounting opening 487a is formed in arm 483a, a mounting opening 487b is formed in arm 483b, and a mounting groove 489 is formed in arm 483b. The trigger mount 600 includes a mount body 602 and a spring 640. The mount body 602 includes a shaft 606, a pivot head 608a, and a pivot head 608b. The shaft 606 includes a handle portion 610. The pivot head 608a includes a support surface 612a and a tool interface 614a. The pivot head 608b includes a support surface 612b and a tool interface 614b. The pivot head 608b also includes a head bore 618.

[0132] The trigger 480 can be installed onto and removed from the gun body 334. The trigger 480 is configured to move along the installation direction TD1 during installation and along the installation direction TD2 during removal. It can be considered that the trigger 480 slides relative to the gun body 334 during installation and removal. The trigger 480 is configured to slide along the displacement axis DA during installation and removal on the gun body 334.

[0133] The spray gun 312 is configured to receive a flow of spray fluid and a flow of compressed air, and to discharge atomized spray of the spray fluid for application onto a target surface. The spray gun 312 is configured as a manual spray gun, but it should be understood that not all examples are so limited. The gun body 334 supports the other components of the spray gun 312. A user can actuate the spray gun 312 between a spraying state and a non-spraying state by pressing the trigger 480 with the fingers of the hand holding the handle 484. The trigger 480 controls the actuation of one or both spray valves 322 (controlling the discharge of spray fluid) and air valves 490 (controlling one or more compressed air flows) to their respective open states.

[0134] Trigger 480 is mounted to gun body 334 via trigger mount 600. The mount of trigger 480 holds trigger 480 on gun body 334. In the example shown, trigger mount 600 provides a pivot point about which trigger 480 can pivot to actuate one or more valves to their respective open states. Trigger mount 600 can be considered as forming a support pivot on which trigger 480 is rotatably supported. In the example shown, trigger 480 is configured to pivot about pivot axis PA.

[0135] The pivot axis PA extends through the gun body 334. The body bore 530 extends along the pivot axis PA. In the example shown, the body bore 530 extends completely laterally through the gun body 334 along the pivot axis PA. In the example shown, the body bore 530 extends completely axially through the gun body 334 along the pivot axis PA. The body bore 530 opens through the lateral sides 534a and 534b of the gun body 334.

[0136] In the example shown, the body bore 530 is formed by a plurality of bores with different radial widths. A bore portion 532a extends from the lateral side 534a into the gun body 334. A bore portion 532c extends from the lateral side 534b into the gun body 334. A bore portion 532b extends between and connects the bore portions 532a and 532c. In the example shown, bore portion 532a has a first radial width, bore portion 532b has a second radial width greater than the first radial width, and bore portion 532c has a third radial width greater than the second radial width. In some examples, one or more of the bore portions 532a to 532c are formed as cylinders. In some examples, the body bore 530 may be formed as a stepped cylinder. In such an example, bore portions 532a to 532c may have different diameters, wherein the diameter of bore portion 532c is larger than the diameter of bore portion 532b, and the diameter of bore portion 532b is larger than the diameter of bore portion 532a.

[0137] The varying radial widths of the bore portion 532 facilitate the mounting and retention of the trigger mount 600 on the gun body 334. A shoulder 536a is formed between bore portions 532a and 532b. Shoulder 536a extends radially outward from the pivot axis PA and can be considered to form the base of bore portion 532b. Shoulder 536b is formed between bore portions 532b and 532c. Shoulder 536b extends radially outward from the pivot axis PA and can be considered to form the base of bore portion 532c. In the example shown, bore portion 532a extends from the lateral side 534a to shoulder 536a, bore portion 532b extends from shoulder 536a to shoulder 536b, and bore portion 532c extends from shoulder 536b to lateral side 534b.

[0138] Mounting body 602 is configured to interface with trigger 480 to connect trigger 480 to gun body 334 when trigger mounting 600 is in the held state. Mounting body 602 is at least partially disposed within body bore 530. In the example shown, when trigger mounting 600 is in the held state, mounting body 602 extends axially through body bore 530. In some examples, when trigger mounting 600 is in the mounted state, mounting body 602 may extend the full length of body bore 530. In the example shown, when trigger mounting 600 is in both the held and mounted states, mounting body 602 protrudes beyond body bore 530. Mounting body 602 extends out of body bore 530 in the axial direction MD2. Mounting body 602 is movable relative to gun body 334 to actuate trigger mounting 600 between the held and mounted states.

[0139] In the example shown, the mounting body 602 is configured to move axially along the mounting axis MA to move between positions associated with a held state and an installed state. In the example shown, the mounting body 602 is configured to move along the mounting axis MA in the axial direction MD2 to place the trigger mount 600 in the installed state, and is configured to move along the mounting axis MA in the axial direction MD1 to place the trigger in the held state. The axial directions MD1 and MD2 can also be referred to as lateral directions. The mounting body 602 moves relative to the gun body 334 in a single lateral direction to actuate the trigger mount 600 from the held state to the installed state. The mounting body 602 moves relative to the gun body 334 in a single lateral direction to actuate the trigger mount 600 from the installed state to the held state.

[0140] In the example shown, the mounting body 602 interfaces with arms 483a and 483b of the trigger 480 to mount the trigger 480 to the gun body 334. A pivot head 608a is disposed at a first axial end of the mounting body 602. The pivot head 608a is configured to interface with arm 483a. The pivot head 608a extends through arm 483a into mounting opening 487a to interface with the trigger 480. In the example shown, with the trigger mount 600 in the held state, the pivot head 608a extends axially entirely through mounting opening 487a. With the trigger mount 600 in the mounted state, the pivot head 608a is withdrawn from mounting opening 487a. In the example shown, with the trigger mount 600 in the mounted state, all portions of the mounting body 602 are withdrawn from mounting opening 487a. Thus, when the trigger mount 600 is in the installed state, the mount opening 487a is not occupied by the mount body 602. Removing the mount body 602 from the mount opening 487a allows the trigger 480 to travel over the pivot head 608a and the mount body 602 during the installation and removal of the trigger 480 on the gun body 334.

[0141] The pivot head 608a has a radial width greater than that of the bore portion 532b. A shoulder 536b axially overlaps the pivot head 608a along the mounting axis MA. The shoulder 536b prevents the pivot head 608a from traveling along the axial direction MD2 and completely passing through the body bore 530. This configuration facilitates the retention of the trigger mount 600 on the gun body 334 in both cases where the trigger 480 is mounted to and removed from the gun body 334. The head portion 616a of the pivot head 608a is axially inwardly oriented towards the gun body 334. The head portion 616a is oriented along the axial direction MD2 and towards the pivot head 608b. The head portion 616a axially overlaps the shoulder 536b along the mounting axis MA. The head portion 616a is configured to interface with the shoulder 536b to restrict movement of the mount body 602 through the body bore 530 in the axial direction MD2.

[0142] In the example shown, the pivot head 608a has a smaller radial width than the bore portion 532c. This smaller radial width of the pivot head 608a relative to the bore portion 532c facilitates its entry into the bore portion 532c during operation. In the example shown, with the trigger mount 600 in the installed state, the pivot head 608a is recessed within the bore portion 532c. In the example shown, with the pivot head 608a recessed within the bore portion 532c, the support surface 612a is annularly surrounded by the material of the gun body 334. In some examples, with the trigger mount 600 in the installed state, the pivot head 608a is completely recessed within the bore portion 532c, such that the pivot head 608a does not travel axially outward from the lateral side 534b in the axial direction MD1 when the trigger mount 600 is in the installed state. It should be understood that in some examples, with the trigger mount 600 in the installed state, the pivot head 608a is not arranged within the gun body 334. For example, the bore portion 532c may be configured to only partially surround the pivot head 608a.

[0143] In the example shown, the pivot head 608a is integrally formed, but it should be understood that not all examples are so limited. In some examples, the pivot head 608a may be formed from multiple components that function together. For example, a washer may support the mounting body 602 to prevent displacement out of the body bore 530 along the first direction MD1 (the washer forms the head surface 616a), and a nut may provide a support surface for the trigger (e.g., support surface 612a).

[0144] A support surface 612a is formed on the exterior of the pivot head 608a. The support surface 612a is the surface that the arm 483a straddles when the trigger 480 is mounted to the gun body 334, and serves as the trigger pivot for spraying by the spray gun 312. The support surface 612a can be formed as a cylindrical surface. When the trigger 480 is mounted to the gun body 334, the support surface 612a is arranged within the mounting opening 487a. In the example shown, the mounting opening 487a is completely radially closed. Thus, the trigger 480 can be supported on the support surface 612a 360 degrees around the mounting axis MA. This configuration increases the operating life of the trigger 480 by fully distributing the load around the mounting axis MA and by reducing wear on the material defining the mounting opening 487a. The support surface 612a is larger than at least a portion of the body bore 530, such that the support surface 612a cannot travel axially through the body bore 530.

[0145] A tool interface 614a is formed on the pivot head 608a. The tool interface 614a is configured to receive torque from a tool to facilitate the assembly of the mounting body 602. In the example shown, the tool interface 614a is arranged on the mounting axis MA and extends along the mounting axis MA into the pivot head 608a. For example, the tool interface 614a may be formed as one or more slots, faceted bores, etc. In the example shown, the tool interface 614a is configured to receive a driver (e.g., a screw driver or screwdriver). However, it is understood that not all examples are so limited. For example, among other options, the tool interface 614a may be formed as a faceted external surface.

[0146] A pivot head 608b is disposed at the second axial end of the mounting body 602. The pivot head 608b is disposed at the opposite end of the mounting body 602 to the pivot head 608a. The pivot head 608b is configured to interface with the arm 483b. The pivot head 608b extends through the arm 483b into the mounting opening 487b to interface with the trigger 480. In the example shown, with the trigger mount 600 in the held state, the pivot head 608b extends axially completely through the mounting opening 487b. With the trigger mount 600 in the installed state, the pivot head 608b is withdrawn from the mounting opening 487b. When the pivot head 608b is withdrawn from the mounting opening 487b, with the trigger mount 600 in the installed state, the mounting body 602 travels through the mounting opening 487b. In the example shown, when the trigger mount 600 is in a held state and an installed state, and the trigger 480 is in an installed position associated with the engagement state of the trigger, at least a portion of the mount opening 487b is occupied by the mount body 602.

[0147] In the example shown, the pivot head 608b is integrally formed, but it should be understood that not all examples are so limited. In some examples, the pivot head 608b may be formed from multiple components that function together. For example, a washer may support the mounting body 602 to prevent displacement out of the body bore 530 in the direction MD2 (the washer forms the head surface 616b), and a nut may provide a support surface for the trigger (e.g., support surface 612b).

[0148] A slot 489 is formed in the trigger arm 483b. The slot 489 extends through the trigger arm 483b and leads to the mounting opening 487b. The slot 489 opens radially outward relative to the mounting axis MA in the arm 483b and radially outward relative to the mounting axis MA through the mounting opening 487b. The slot 489 defines a displacement axis DA along which the trigger 480 moves between an engaged state and a disengaged state. In the engaged state, the trigger 480 is movable to open a first valve (e.g., spray valve 322 or air valve 490), and in the disengaged state, the trigger 480 is spaced apart from a first valve assembly (e.g., assembly 338 or assembly 476) such that the first valve assembly travels axially past the trigger 480 along the spray axis SA. The slot 489 facilitates the movement of the mounting body 602 away from the mounting opening 487b during the removal of the trigger 480. The mounting body 602 exits the mounting opening 487b through the slot 489 and does not overlap with the trigger 480. The slot 489 facilitates the movement of the mounting body 602 into the mounting opening 487b during the installation of the trigger 480. The mounting body 602 travels through the slot 489 to overlap with the trigger 480 and enter the mounting opening 487b. During installation and removal, the mounting body 602 moves within the slot 489 as the trigger 480 travels through it. The mounting body 602 can slide within the slot 489 during the installation and removal of the trigger 480.

[0149] The width W1 of the slot 489 is smaller than the radial width of the pivot head 608b (e.g., the diameter relative to the mounting axis MA), thereby preventing the trigger 480 from moving relative to the pivot head 608b along the displacement axis DA when the pivot head 608b is arranged within the mounting opening 487. In the example shown, the width W1 of the slot 489 is smaller than the diameter of the support surface 612b, which is part of the mounting body 602, on which the arm 483b straddles when the trigger mount 600 is in the held state and holds the trigger 480 on the gun body 334. The radial width of the shaft 606 is smaller than the width W1 of the slot 489, allowing the trigger 480 to move relative to the mounting body 602 along the displacement axis DA when the shaft 606 is within and through the slot 489. Removing the pivot head 608b from the mounting opening 487b (e.g., by axial movement along the mounting axis MA) allows the trigger 480 to travel through the pivot head 608b (e.g., by radial movement relative to the mounting axis MA) during the installation and removal of the trigger 480 on the gun body 334.

[0150] The radial width of the pivot head 608b is greater than the radial width of the bore portion 532a. In the example shown, the gun body 334 overlaps axially with the pivot head 608b along the mounting axis MA. This configuration helps to retain the trigger mount 600 attached to the gun body 334 when the trigger 480 is mounted to and removed from the gun body 334. The head portion 616b of the pivot head 608b is oriented axially inward toward the gun body 334. The head portion 616b is oriented along the axial direction MD1 and toward the pivot head 608a. The head portion 616b overlaps axially with the transverse side 534a along the mounting axis MA. The head portion 616b is configured to interface with the gun body 334 to restrict the movement of the mount body 602 through the body bore 530 in the axial direction MD1. The transverse side 534a prevents the pivot head 608b from traveling along the axial direction MD1 and completely passing through the body bore 530. In some examples, the radial width of the body bore 530, extending from the lateral side 534b but not fully into a portion of the bore portion 532b, is greater than the radial width of the pivot head 608b. Thus, in some examples, the pivot head 608b can be partially recessed within the gun body 334. Whether the pivot head 608b is entirely outside the gun body 334 or partially recessed within it, the dimensions of the body bore 530 are configured such that the pivot head 608b cannot travel completely through the body bore 530 in the axial direction MD1.

[0151] A support surface 612b is formed on the exterior of the pivot head 608b. The support surface 612b is the surface of the mounting body 602, on which the arm 483b straddles when the trigger 480 is mounted to the gun body 334, and is used to pivot the trigger 480 to allow the spray gun 312 to spray. The support surface 612b can be formed as a cylindrical surface. When the trigger 480 is mounted to the gun body 334, the support surface 612b is arranged within the mounting opening 487b. In the example shown, where the slot 489 extends into the mounting opening 487b, the mounting opening 487b is partially radially closed. The trigger 480 can be supported on the support surface 612b by less than 360 degrees about the mounting axis MA. The support surface 612b is larger than at least a portion of the body bore 530, such that the support surface 612b cannot travel axially through the body bore 530.

[0152] In the example shown, arm 483b includes slot 489, while arm 483a does not include a corresponding slot. Mounting opening 487b does not extend completely around support surface 612b, while mounting opening 487a is closed and extends completely around support surface 612a. The single-slot construction of trigger 480 allows unidirectional displacement of mounting body 602 to actuate trigger mount 600 between states, and allows unidirectional displacement of trigger 480 during installation and removal. The closed mounting opening 487a provides increased lifespan for trigger 480 by distributing wear completely around mounting axis MA, while the partially closed mounting opening 487b provides a compact construction and simple operation of spray gun 312 and trigger mount 600 through unidirectional actuation and installation.

[0153] A tool interface 614b is formed on the pivot head 608b. The tool interface 614b is configured to receive torque from a tool to facilitate the assembly of the mounting body 602. In the example shown, the tool interface 614b is formed on the radially outer side of the pivot head 608b. The tool interface 614b is axially arranged relative to the gun body 334 on the outer side of the support surface 612b. The support surface 612b is axially arranged between the tool interface 614b and the gun body 334. In the example shown, the tool interface 614b is formed as a faceted surface. In the example shown, the tool interface 614a is configured to be received by a torsion tool (e.g., a wrench, socket, etc.). Although the tool interface 614b is shown as being formed on the outer side of the pivot head 608b, it is understood that the tool interface 614b may extend into the pivot head 608b to receive torque, similar to the tool interface 614a.

[0154] Pivot heads 608a and 608b are arranged on opposite sides of the gun body 334. Pivot heads 608a and 608b are arranged such that at least a portion of the gun body 334 is directly axially positioned between pivot heads 608a and 608b. The trigger mount 600 is configured such that the mount body 602 remains mounted to the gun body 334 when the trigger 480 is in the engaged or disengaged state. The dimension of pivot head 608a relative to the body bore 530 is set to prevent the mount body 602 from traveling away from the body bore 530 in the axial direction MD2. The dimension of pivot head 608b relative to the body bore 530 is set to prevent the mount body 602 from traveling away from the body bore 530 in the axial direction MD1. While the trigger 480 is being installed or removed, the mounting body 602 remains installed to the gun body 334, simplifying the operation of the spray gun 312 and making it easier for the user to operate by eliminating loose parts.

[0155] A shaft 606 extends between and connects pivot heads 608a and 608b. The shaft 606 extends along the mounting axis MA. Among other options, the shaft 606 may be cylindrical. In some examples, the outer surface of the shaft 606 is faceted or otherwise non-circular, and the shape of the body bore 530 (e.g., bore portion 532a) is similar, such that the shaft 606 is keyed to the body bore 530. Keying the shaft 606 to the body bore 530 prevents the mount body 602 from rotating on the mounting axis MA, allowing the trigger 480 to pivot about the mounting axis MA and move relative to the mount body 602.

[0156] A shaft 606 extends between the axially inner sides of pivot heads 608a and 608b. In the illustrated example, shaft 606 is integrally formed with pivot head 608a. In the illustrated example, shaft 606 is separately formed from and mounted to pivot head 608b. In some examples, shaft 606 and pivot head 608b can be removably mounted to each other, for example, through an interface thread between shaft 606 and pivot head 608b. Shaft 606 and pivot head 608b can be removably mounted such that twisting pivot head 608a and / or pivot head 608b on the mounting axis MA can disconnect the connection between shaft 606 and pivot head 608b. In the illustrated example, shaft 606 includes a threaded shank 610 extending into a threaded head bore 618 in pivot head 608b to form a threaded interface between shaft 606 and pivot head 608b. In some examples, the bore 618 opens fully axially through the pivot head 608b. In some examples, the bore 618 extends only partially through the pivot head 608b, such that the bore 618 does not open through the outer axial surface of the pivot head 608b, thus providing a smooth outer surface for user interaction. In some examples, the shaft 606 and the pivot head 608b can be permanently connected, for example by press fitting, adhesive, welding, etc. Although the shaft 606 is shown as integral with the pivot head 608a in the illustrated examples, it should be understood that not all examples are so limited. For example, the shaft 606 can be integrally formed with and mounted to the pivot head 608a. In another example, the shaft 606 can be separately formed with and assembled to both pivot heads 608a, 608b. The shaft 606 extends between and connects the pivots 608a and 608b to enable unidirectional actuation between the held and mounted states.

[0157] In the example shown, shaft 606 is formed as a rigid structure that connects pivot heads 608a and 608b together for simultaneous movement along the mounting axis MA. Shaft 606 rigidly connects pivot heads 608a and 608b. A force applied to pivot head 608a in the axial direction MD2 is transmitted to pivot head 608b via shaft 606, causing pivot head 608b to displace together with pivot head 608a in the axial direction MD2. Similarly, a force applied to pivot head 608a in the axial direction MD1 is transmitted to pivot head 608b via shaft 606, causing pivot head 608a to displace together with pivot head 608b in the axial direction MD2. Forces applied in opposite directions to the mounting body 602 can be canceled out. For example, applying a first force to the pivot head 608b along the axial direction MD1 and applying a second force to the pivot head 608a along the axial direction MD2 can counteract those equal forces that cause the mounting body 602 to remain stationary.

[0158] The shaft 606 extends within the body bore 530. With the trigger mount 600 in both the held and mounted states, the shaft 606 is at least partially disposed within the body bore 530. With the trigger mount 600 in the mounted state, a smaller portion of the shaft 606 is disposed within the body bore 530, compared to the held state. With the trigger mount 600 in the mounted state, a larger portion of the shaft 606 is disposed outside the body bore 530, compared to the held state.

[0159] Spring 640 is configured to bias trigger mount 600 into a holding state. Spring 640 biases mount body 602 in the axial direction MD1. In the example shown, spring 640 interfaces with mount body 602 to bias mount body 602 in the axial direction MD1. Spring 640 interfaces with pivot head 608a to bias mount body 602. Spring 640 interfaces with head section 616a oriented in the axial direction MD2. Spring 640 extends between shoulder 536a and pivot head 608a. Spring 640 is axially captured between head section 616a and shoulder 536a. Spring 640 is supported against shoulder 536a to bias mount body 602 relative to gun body 334 in the axial direction MD1.

[0160] Spring 640 is arranged around a portion of the mounting body 602. In the example shown, spring 640 is arranged around shaft 606. Shaft 606 extends through spring 640 and axially beyond spring 640. In the example shown, the radial width of shaft 606 is smaller than the radial width of spring 640. In the example shown, the diameter of spring 640 is larger than the diameter of shaft 606. The diameter of spring 640 is smaller than the diameter of support surface 612a. In the example shown, spring 640 is formed as a coil spring, but it should be understood that not all examples are so limited.

[0161] During operation, the trigger mount 600 is actuated to facilitate the installation and removal of the trigger 480 from the spray gun 312. The trigger mount 600 supports the trigger 480 on the gun body 334, allowing the trigger 480 to pivot about the mounting axis MA and to actuate one or more valves to allow spraying from the spray gun 312. The trigger mount 600 pivotally supports the trigger 480. The trigger 480 is initially removed from the gun body 334, disconnecting it from and no longer supported by it. The trigger 480 moves vertically upward from the bottom side of the gun body 334, such that arms 483a, 483b are arranged on the opposite lateral sides 534a, 534b of the gun body 334.

[0162] The trigger mount 600 is actuated to the mounted state. The mount body 602 moves along the axial direction MD2 from... Figure 3C The position shown has been shifted to Figure 4C The position is shown. For example, an axial force along the axial direction MD2 can be applied to the pivot head 608a. This force is transmitted to the pivot head 608b via the shaft 606. The pivot head 608a, shaft 606, and pivot head 608b are displaced along the axial direction MD2. The pivot head 608a is received within the bore portion 532c and recessed within the body bore 530. The spring 640 is compressed between the pivot head 608a and the shoulder 536a. The pivot head 608b is spaced apart from the gun body 334, such that an axial clearance is formed between the pivot head 608b and the gun body 334 along the mounting axis MA.

[0163] The mounting body 602 is positioned relative to the holding state ( Figure 3C Move to the location associated with the installation status. Figure 4C The mounting body 602 is laterally positioned relative to the gun body 334 to a position associated with the mounting state. The mounting body 602 moves along the axial direction MD2 to place the trigger mounting 600 in the mounting state.

[0164] With the trigger mount 600 in the installed state, the mount body 602 is positioned to facilitate the installation of the trigger 480 onto or from the gun body 334. A pivot head 608a is axially arranged between the lateral sides 534a and 534b. The pivot head 608a is axially arranged between the arms 483a and 483b along the mounting axis MA. The pivot head 608b is axially spaced outward from the gun body 334. The pivot head 608b is arranged such that the arm 483b is axially arranged between the pivot head 608b and the gun body 334. The arm 483b is axially arranged between the pivot head 608b and the lateral side 534b of the gun body 334. The arm 483b is axially arranged between the pivot head 608b and the pivot head 608a. The arm 483b is arranged in the axial gap formed between the pivot head 608b and the lateral side 534b.

[0165] With the mounting body 602 in a position associated with the installation state, the trigger 480 can travel past the mounting body 602 to be mounted on the gun body 334. The trigger 480 moves from a position associated with the disengaged state to a position associated with the engaged state. In the disengaged state, the trigger 480 is spaced apart from the first valve assembly (e.g., control assembly 338, control assembly 476) such that the first valve assembly can travel axially past the trigger 480 along the spray axis SA for installation and removal. In the engaged state, the trigger 480 can move to open the first valve of the first valve assembly.

[0166] During installation, the trigger 480 moves upward from the bottom side of the gun body 334 and enters the gap between the front block 494 and the rear block 496 along the spray axis SA. The upward movement of the trigger 480 causes the gun body 334 to be received in a U-shaped clamp formed by arms 483a and 483b. The upward movement of the trigger 480 causes the valve stem of the spray gun 312 to be arranged in the receiving portion 485 of the trigger 480. In the example shown, the receiving portion 485 is formed as a groove in the body of the trigger 480.

[0167] During the installation of trigger 480, arm 483a is positioned on the first lateral side of gun body 334. As trigger 480 moves to the engaged state, arm 483a is spaced apart in the axial direction MD1 relative to mounting body 602. During the installation of trigger 480, arm 483a is spaced apart in the axial direction MD1 relative to pivot heads 608a and 608b. In the example shown, arm 483a travels across mounting body 602 such that mounting opening 487a is aligned with pivot head 608a.

[0168] During the installation of trigger 480, arm 483b is positioned on the second lateral side of gun body 334. Arm 483b is axially positioned between different portions of mounting body 602. Arm 483b is axially positioned between the axial ends of mounting body 602. Arm 483b is spaced apart from pivot head 608b along axial direction MD1 and from pivot head 608a along axial direction MD2. During installation relative to mounting axis MA, arm 483b does not radially overlap with either pivot head 608b. Arm 483b travels past pivot head 608b at an axial position between pivot head 608b and gun body 334. In the example shown, a portion of arm 483b axially overlaps with pivot head 608b and gun body 334 along mounting axis MA during at least a portion of the displacement of trigger 480 from disengaged state to engaged state.

[0169] Arm 483 is positioned such that pivot head 608b is axially aligned with mounting opening 487b. In the example shown, movement of trigger 480 relative to gun body 334 and / or movement of gun body 334 relative to trigger 480 causes shaft 606 to travel through slot 489 and into mounting opening 487b. Relative movement occurs along displacement axis DA aligned with slot 489. Slot 489 can be considered as defining displacement axis DA. Shaft 606 traveling through slot 489 and into mounting opening 487b aligns pivot head 608b with mounting opening 487b. During installation and removal of trigger 480, mounting opening 487b moves radially relative to mounting axis MA.

[0170] With the trigger 480 positioned in the engagement state, the trigger mount 600 is actuated to a holding state to connect the trigger 480 to the gun body 334. The trigger mount 600 connects the trigger 480 to the gun body 334 and holds the trigger 480 in the engagement state. The mount body 602 moves laterally relative to the gun body 334 and engages with the trigger 480. The mount body 602 mechanically supports the trigger 480 on the gun body 334. In the example shown, the mount body 602 is released, and the spring 640 displaces the mount body 602 in the axial direction MD1. The spring 640 applies an axial driving force to the pivot head 608a, displacing the pivot head 608a and causing the pivot head 608 to pull the shaft 606 and the pivot head 608b in the axial direction MD1. The pivot head 608a moves in the axial direction MD1 and enters the mount opening 487a. Pivoting head 608b moves along the axial direction MD1 and enters the mounting opening 487b. Pivoting heads 608a and 608b move along the same axial direction to enter the mounting openings 487a and 487b, thereby connecting trigger 480 to gun body 334.

[0171] In the example shown, the pivot head 608b restricts displacement in the axial direction MD1. The pivot head 608b is sized such that it cannot travel through the body bore 530 in the axial direction MD1. In the example shown, the axially inner side of the pivot head 608b (e.g., the head portion 616b) engages with the gun body 334 to restrict displacement of the mounting body 602 in the axial direction MD1. Therefore, the mounting body 602 is held on the gun body 334 in both the held and mounted states of the trigger mount 600. The mounting body 602 is sized such that when the trigger 480 is removed from the gun body 334, the spring 640 does not cause the mounting body 602 to be detached from the gun body 334.

[0172] The mounting body 602 is displaced along the axial direction MD1 to a position related to the holding state. In the example shown, the mounting body 602 is sized such that the support surface 612a is directly disposed within the mounting opening 487a, wherein the mounting body 602 is located at the displacement limit in the axial direction MD1. The mounting body 602 is also sized such that the support surface 612b is directly disposed within the mounting opening 487b, wherein the mounting body 602 is located at the displacement limit in the axial direction MD1. The support surfaces 612a and 612b rotatably support the trigger 480 on the mounting axis MA. The trigger 480 is pivotable about the mounting axis MA, such that the mounting axis MA can also be considered as forming a pivot axis.

[0173] The user can engage the pull part 481 with the fingers of the hand holding the trigger 480 to cause the spray gun 312 to spray. In the example shown, the trigger 480 can actuate both the spray valve 322 and the air valve 490 to their respective open states. The trigger 480 can be removed from the gun body 334 to facilitate the maintenance, removal, repair, etc., of one or more spray valves. These valves can be formed as part of one or more valve cylinder assemblies that can be mounted to the gun body 334. The trigger 480 shifts from the engaged state to the disengaged state to allow the installation or removal of one or more valve cylinders. In the example shown, when the trigger 480 is in the disengaged state, the trigger 480 is completely removed from the gun body 334. The trigger 480 is disconnected from the gun body 334 so that the trigger 480 is not supported by the gun body 334 when in the disengaged state.

[0174] The trigger 480 is removed by actuating the trigger mount 600 from a holding state to a mounting state, and then displacing the trigger 480 relative to the gun body 334 and / or displacing the gun body 334 relative to the trigger 480, such that the gun body 334 is dislodged from the U-shaped clamp of the trigger 480. In the example shown, the mount body 602 is laterally displaced such that the pivot head 608a is removed from the mount opening 487a, and the pivot head 608b is removed from the mount opening 487b. A single axial input on the pivot head 608a can displace each of the pivot heads 608a, 608b, and the shaft 606 along the mounting axis MA. Both pivot heads 608a and 608b move in the axial direction MD2. The mount body 602 is removed from the mount opening 487a, and the mount body 602 extends through the mount opening 487b.

[0175] Trigger 480 moves downward along displacement axis DA away from gun body 334. Gun body 334 travels from directly between arms 483a and 483b to not being directly positioned between arms 483a and 483b. With mounting body 602 in a position associated with the mounting state, trigger 480 moves such that arm 483a travels over mounting body 602 and arm 483b travels away from mounting body 602. Shaft 606 travels within slot 489 to disassemble arm 483b. Arm 483b radially overlaps with mounting body 602, and slot 489 allows arm 483b to travel radially across mounting body 602 relative to mounting axis MA. Arm 483a is axially spaced outward from mounting body 602 and does not radially overlap with mounting body 602 along mounting axis MA during trigger 480 disassembly.

[0176] The trigger 480 travels past the mounting body 602 and disengages from the gun body 334. After the arm 483 travels past the mounting body 602, the mounting body 602 can return to the position associated with the holding state. The spring 640 drives the mounting body 602 in the axial direction MD1 and drives it back to the position associated with the holding state. The trigger 480 is removed from the gun body 334, while the trigger mounting 600 remains connected to and supported by the gun body 334. One or more valve cylinders can be removed for maintenance, reinstallation, replacement, etc. The same or a new trigger 480 can be installed onto the gun body 334 via the trigger mounting 600 to resume painting.

[0177] A trigger mount 600 is disposed directly between at least one channel for delivering compressed gas and the spray axis SA, along which one or more valves are arranged for actuation by a trigger 480. In the example shown, a common channel 502 radially overlaps with the trigger mount 600 relative to the spray axis SA, such that both forming air and atomizing air flow radially outside the trigger mount 600 and at the location where they overlap with the trigger mount 600.

[0178] The trigger mount 600 is configured to provide a compact construction for the gun body 334 and the trigger 480. In the example shown, the trigger 480 is completely detached from the gun body 334. Complete detachment of the trigger 480 from the gun body 334 eliminates the need to extend the channel to receive the mount body 602 when the trigger 480 slides but remains mounted to the gun body 334. It should be understood that in some examples, the trigger 480 can remain mounted to the gun body 334 while in a detached state. For example, the trigger 480 may include a set of auxiliary openings similar to mount openings 487a, 487b, spaced apart from mount openings 487a, 487b along axis DA. The mount body 602 can engage the auxiliary openings to hold the trigger 480 mounted on the gun body 334, but in a position spaced apart from the spray axis SA, thereby allowing the valve to be installed and removed from the gun body 334. The compact construction of the trigger 480 reduces material and manufacturing costs and provides a simplified construction. Furthermore, a single trigger 480 can be removed from a gun body 334 used for spraying with the first fluid type and used on a second gun body 334 used for spraying with the second fluid type. Worn triggers 480 can also be easily removed and replaced.

[0179] The mounting body 602 moves laterally relative to the gun body 334 from a holding position associated with a holding state to a mounting position associated with a mounting state. The mounting body 602 moves axially along the mounting axis MA. This single-unit movement of the mounting body 602 along a single axial direction contributes to the compact construction of the gun body 334. The body bore 530 does not need to be sized to receive two pivot heads 608a, 608b; instead, pivot head 608b remains outside the gun body 334, while pivot head 608a is recessed within the gun body 334. This construction contributes to a laterally compact gun body 334, thereby reducing material and manufacturing costs. The compact construction reduces the weight of the gun body 334, thus reducing user fatigue and providing more efficient painting operations.

[0180] The body bore 530 is arranged directly vertically between the air delivery channel and the spray axis SA. The pivot of the trigger 480 is located within the area defined by the respective flow channels. In the example shown, the pivot of the trigger 480 is located within the area defined by the flow channels for delivering compressed gas (located vertically above, longitudinally in front and behind the spray axis SA) and also defined by the spray axis SA. Figure 2A and Figure 2B This area is best viewed from the center. Positioning the pivot in this area contributes to the compact design of the gun body 334, thereby reducing material and manufacturing costs. The compact design reduces the weight of the gun body 334, thus reducing user fatigue and providing more efficient painting operations.

[0181] The mounting body 602 and the trigger 480 are configured such that the trigger 480 moves in a single direction during installation and in a single direction during removal. The trigger 480 moves along the displacement axis DA in a first direction to mount onto the gun body 334, and moves along the axis DA in the opposite second direction to remove from the gun body 334. This unidirectional axial movement provides a compact mounting footprint for the trigger 480, compared to multidirectional movement, such as an open hook moving upwards across a pivot and then upwards and downwards. This unidirectional movement also simplifies the installation and removal process for the user. The user can fully actuate the trigger mounting 600 to the holding position with a single finger. The user can apply an axial force to the pivot head 608a to displace the mounting body 602 with a single finger.

[0182] The trigger mount 600 receives a single actuation force to shift from a held state to a mounted state. An axial force is applied to the pivot head 608a to displace the mount body 602 along the axial direction MD2. This single displacement disengages the mount body 602 from the arms 483a and 483b. Applying a single axial force to disconnect the trigger 480 from the trigger mount 600 further contributes to the compact construction of the gun body 334 and the mount body 602. The gun body 334 is wide enough in the lateral direction to support the mount body 602, but eliminates the need to receive multiple claws when the trigger 480 is disconnected. This construction also provides simpler installation and removal, thereby reducing complexity for the user and minimizing downtime.

[0183] The trigger mount 600 receives a single actuating force to shift from the mounted state to the held state. An axial force is applied to the pivot head 608a to shift the mount body 602 in the axial direction MD1. A spring 640 biases the trigger mount 600 toward the held state, so that the trigger mount 600 is normally in the held state. The trigger mount 600, normally in the held state, holds the trigger 480 on the gun body 334 without requiring additional user input, thereby preventing accidental disconnection of the trigger 480.

[0184] Figure 5A This is the first equidistant view of trigger 1480. Figure 5B This is the second isometric view of trigger 1480. Figure 5C This is the elevation side view of trigger 1480. Figure 6 This is an enlarged isometric view of the mounting interface of the trigger 1480 on the spray gun 312. Let's discuss. Figures 5A to 6 Trigger 1480 is basically similar to trigger 480 (in... Figures 3A to 4C (This can be best seen in the drawing). Components of trigger 1480, which are similar to those of trigger 480, are indicated by the same reference numerals, except for the addition of "1000" (e.g., pull portion 1481 and pull portion 481). Trigger 1480 includes pull portion 1481, arms 1483a, 1483b, receiving portion 1485, mounting openings 1487A, 1487b, and mounting groove 1489. Mounting opening 1487a includes tool connection portion 1622 and trigger support surface 1624a. Mounting opening 1487b includes trigger support surface 1624b.

[0185] Trigger 1480 is configured to be mounted to and removed from gun body 334 in the same manner as trigger 480, which has been discussed in detail above. Trigger 1480 can be mounted to the gun body via trigger mount 600. Trigger mount 600 holds trigger 1480 on gun body 334. In the example shown, trigger mount 600 provides a pivot point about which trigger 1480 can pivot to actuate one or more valves to their respective open states. Trigger mount 600 can be considered to form a support pivot on which trigger 1480 can be rotatably supported. In the example shown, trigger 1480 is configured to pivot about pivot axis PA.

[0186] The pull portion 1481 includes a forward surface 1626 configured to be engaged by one or more fingers of the user during spraying operation of the spray gun 312 to actuate the trigger 1480. Arms 1483a and 1483b extend from the pull portion 1481. When the trigger 1480 is mounted to the spray gun 312, the arms 1483a and 1483b are configured to be arranged on opposite lateral sides of the gun body 334. In the example shown, the receiver 1485 is formed as a groove in the body of the trigger 1480. The receiver 1485 is configured to extend around the valve stem of the valve of the spray gun 312 and can axially overlap with the connector 492 such that the trigger 1480 can actuate the spray valve by defining a groove in the receiver 1485 that engages the connector 492.

[0187] A mounting opening 1487b is formed through arm 1483b. A trigger support surface 1624b defines the mounting opening 1487b. The trigger support surface 1624b is configured to engage with a pivot head 608b to straddle it. In the example shown, the trigger support surface 1624b is formed as a partial ring. A mounting groove 1489 extends through trigger arm 1483b and opens to allow the shaft 606 of trigger mount 600 to enter and exit the mounting opening 1487b. Mounting openings 1487a and 1487b are coaxially arranged on a pivot axis PA, about which trigger 1480 is configured to pivot when mounted to spray gun 312 to control the spraying of spray gun 312.

[0188] In the example shown, the trigger support surface 1624b is formed by a support member 1628b. The support member 1628b is formed separately from and fixed to the trigger arm 1483b. For example, the trigger arm 1483b may be overmolded onto the support member 1628b. The support member 1628b may be formed of a material different from the material forming the trigger arm 1483b. For example, the support member 1628b may be formed of a metal such as steel, a carbide, etc., while the trigger arm 1483b may be formed of a polymer.

[0189] A mounting opening 1487a is formed through arm 1483a. A trigger support surface 1624a defines the mounting opening 1487a. The trigger support surface 1624a is configured to engage with a pivot head 608a to straddle the pivot head 608a. In the example shown, the trigger support surface 1624a is formed completely annularly around the mounting opening 1487a. In the example shown, the mounting opening 1487a is closed.

[0190] A tool connection 1622 is formed around the mounting opening 1487a. The tool connection 1622 is configured to interface with the surface of another component of the spray gun 312, such that the trigger 1480 can apply force to the other component via the tool connection 1622. In the example shown, the tool connection 1622 is configured to apply torque to the other component, such that the trigger 1480 can drive rotational displacement of the other component via the tool connection 1622. In the example shown, the tool connection 1622 is formed as a hexagonal surface extending around the mounting opening 1487a; however, it should be understood that not all examples are so limited.

[0191] In some examples, trigger 1480 may include additional or alternative tool interfaces. For example, trigger 1480 may include one or more protrusions shaped to extend into or receive other components to apply a driving force to those components. In some examples, the one or more protrusions may be shaped as hexagonal protrusions or chambers, stars, flattened, crossheads, starheads, or other shapes suitable for applying torque to other components. For example, one or more protrusions may be configured to interface with tool interfaces 614a, 614b of trigger mount 600. In some examples, such one or more protrusions may extend from the outer surface 1630 of one or both of trigger arms 1483a, 1483b. In some examples, one or more protrusions may extend from the outer lateral side 1632 of trigger arms 1483a, 1483b. In some examples, the tool interface may be formed as one or more protrusions configured as pickups, for example for applying leverage to components, or for cleaning nozzle 328 or orifices through air cap 392.

[0192] In the example shown, the trigger support surface 1624a is formed by a support member 1628a. The tool connection portion 1622 is also formed by the support member 1628a. The support member 1628a is formed separately from the trigger arm 1483a and is fixed to the trigger arm 1483a. For example, the trigger arm 1483a may be overmolded onto the support member 1628a. The support member 1628b may be formed of a material different from the material forming the trigger arm 1483b. For example, the support member 1628b may be formed of a metal such as steel, a carbide, etc., while the trigger arm 1483b may be formed of a polymer.

[0193] Both the tool connection portion 1622 and the trigger support surface 1624a are formed by a support member 1628a. The tool connection portion 1622 is formed by a plurality of interface surfaces 1634 extending around a mounting opening 1487a to define the mounting opening 1487a. The interface surfaces 1634 define a circular support opening inscribed within a hexagonal tool opening, which is also defined by the interface surfaces 1634. The circular support opening is configured to receive a pivot head 608a such that a pivot head 608b rides on a portion of the interface surface 1634 defining the inscribed circular support opening. In the example shown, the trigger 1480 is configured such that a portion of each interface surface 1634 rides on the pivot head 608a. In the example shown, the trigger 1480 is configured such that a portion less than the full circumferential length CL of each interface surface 1634 contacts and rides on the pivot head 608a. Each interface surface 1634, with a full length CL, can contact the corresponding surface on the component contacted by the tool connection 1622 to apply torque to other components.

[0194] Trigger 1480 offers significant advantages. Trigger 1480 can be mounted to spray gun 312 to actuate one or more valves of spray gun 312 to control the spraying of spray gun 312. Trigger 1480 is configured to be mounted and dismounted by moving relative to gun body 334 to connect to and disconnect from trigger mount 600. Trigger support surfaces 1624a, 1624b straddle pivot heads 608a, 608b, respectively, allowing trigger 1480 to pivot smoothly on mounting axis MA.

[0195] Typically, trigger 1480 is removed from spray gun 312 for servicing one or more spray valves of spray gun 312. With trigger 1480 removed, tool connector 1622 can be used to manipulate components of spray gun 312. Tool connector 1622 can be used to tighten or loosen threaded connections. Thus, trigger 1480 can provide triggering for controlling spraying and for installing and removing components from spray gun 312. The user does not need to find and use a separate tool to tighten or loosen the threaded connections. Instead, the user can utilize trigger 1480, which has been removed from spray gun 312 and is ready to be used as a tool. This configuration saves time and cost and provides more efficient spraying operations.

[0196] Figure 7A This is an isometric exploded view of spray gun 312. Figure 7B This is an isometric exploded view of spray gun 312. Figure 8 This is an isometric view of the trigger 1480 and the spray control assembly 338. The spray control assembly 338 can also be referred to as a valve cylinder. Let's discuss. Figures 7A to 8 .

[0197] The valve body 364 includes a mounting head 1636. The mounting head 1636 is formed at the downstream end of the valve body 364. The mounting head 1636 is arranged coaxially with the nozzle 328. The mounting head 1636 includes a plurality of mounting surfaces 1638 arranged around an axis SA. The mounting head 1636 forms a tool interface for the spray control assembly 338. In the example shown, the mounting opening 1487a is configured to receive the mounting head 1636, such that the tool connection 1622 receives and interfaces with the mounting head 1636. The trigger 1480 is rotatable on the axis SA to tighten or loosen the threaded interface for mounting the spray control assembly 338 to the gun body 334.

[0198] In the example shown, a bonding interface is formed between the valve body 364 and the trigger 1480. With the tool connection 1622 radially overlapping the mounting head 1636, the bonding interface prevents the trigger 1480 from rotating relative to the valve body 364. It should be understood that while the bonding interface is formed by an extension of the valve body 364 into a portion of the trigger 1480, this is not a limitation in all examples. For example, a portion of the trigger 1480 may extend into a portion of the valve body 364, for example, through an array of points in an array of bores extending into the valve body 364, and other options. The bonding interface may be formed around and coaxially with the nozzle 328. It should be understood that although a bonding interface between the trigger 1480 and the spray control assembly 338 is shown, the trigger 1480 may additionally or alternatively be configured to engage with a flow control assembly 476 that controls the flow of compressed air through the spray gun 312 to facilitate the installation and removal of the flow control assembly 476 by interfacing with the trigger 1480.

[0199] Figure 9 This is an isometric view of trigger 1480'. Trigger 1480' is substantially similar to trigger 1480, except that trigger 1480' includes a protrusion 1640 configured to extend into an interface of a receiving portion of a component of the spray gun (e.g., a valve assembly) to apply force to that component for installation or removal. In the example shown, the protrusions 1640 are arranged in an array around axis PA.

[0200] Figure 10 This is an elevation view showing the engagement between the air cap 326 and the spray control assembly 338. Figure 11A This is an isometric view of the spray control assembly 338. Figure 11BThis is an elevation end view of the spray control assembly 338. The air cap 326 is configured to engage with the spray control assembly 338 at a bonding interface, such that the air cap 326 can apply torque to the spray control assembly 338 during installation and / or removal.

[0201] Air cap 326 is configured to receive a flow of compressed gas (e.g., compressed air) and output these flows to shape and / or atomize the spray fluid output from spray control assembly 338. Air cap 326 includes a horn portion 446 projecting from the body of air cap 326. Horn portion 446 is configured to output a portion of the compressed gas. In the example shown, horn portion 446 also forms an interface component of air cap 326 that interfaces with spray control assembly 338 to apply torque to spray control assembly 338.

[0202] The spray control assembly 338 is configured to be mounted to and / or detached from the gun body 334 of the spray gun 312 via a valve barrel tool. In the example shown, the spray control assembly 338 is configured such that it can be detached by interfacing with a single tool among a plurality of different tools. For example, ring 426 includes an annular flat portion 1650 forming a faceted exterior of the valve barrel body 364. The annular flat portion 1650 can be engaged by a tool (e.g., a wrench) so that torque can be applied to the spray control assembly 338 for mounting or removal. The valve barrel body 364 may additionally or alternatively include a mounting head 1636. The mounting head 1636 may be engaged by a tool configured to apply torque by engaging with a mounting surface 1638 forming the faceted exterior of the mounting head 1636. For example, the mounting head 1636 may be engaged by a trigger 1480 such that the trigger 1480 forms a valve barrel tool. In some examples, the mounting head 1636 can be engaged by a wrench to apply torque to the spray control assembly 338. The spray control assembly 338 may additionally or alternatively include a horn groove 1642. The horn groove 1642 forms a receiving portion on the spray control assembly 338, into which the horn portion 446 of the air cap 326 can extend, such that rotation of the air cap 326 applies torque to the spray control assembly 338. Thus, the air cap 326 can form a valve-type tool.

[0203] In the example shown, the spray control assembly 338 includes a horn groove 1642. The horn groove 1642 is configured to receive a horn portion 446 of the air cap 326. The horn groove 1642 is formed in the valve body 364. In the example shown, the horn groove 1642 is formed in a ring 426 of the valve body 364. The horn groove 1642 opens radially outward away from the spray axis SA. The horn groove 1642 closes radially inward toward the spray axis SA. Each horn groove 1642 includes a base 1644 located radially inward of the horn groove 1642. The horn groove 1642 extends radially outward of the ring 426, but does not extend radially through the ring 426. In the example shown, the flared groove 1642 does not extend into the annular lip 1646, which interfaces with the air cap 326 to form a sealed interface between the air cap 326 and the spray control assembly 338 when the spray control assembly 338 and the air cap 326 are mounted on the spray gun 312. The annular lip 1646 is an angled annular surface that mates with the air cap 326.

[0204] The horn slot 1642 includes a sidewall 1648. The sidewall 1648 is disposed on the circumferential side of the horn slot 1642. The sidewall 1648 is configured to circumferentially overlap with the horn portion 446 of the air cap 326 when the horn portion 446 is disposed in the horn slot 1642. The horn portion 446 may interface with the sidewall 4648 to apply torque on the spray control assembly 338 for installation and removal. In some examples, the sidewalls 1648 may converge toward each other as they extend from the axial end of the opening of the horn slot 1642 in the upstream direction AD1. Such a configuration may facilitate the reception of the horn portion 446, which may include horn sidewalls 1652 that converge toward each other as the horn portion 446 extends away from the body of the air cap 326.

[0205] The spray control assembly 338 includes a pair of opposing horn slots 1642. The horn slots 1642 open axially in the downstream direction AD2. The axial opening of the horn slots 1642 allows the horn 446 to enter the horn slots 1642 via relative axial movement between the air cap 326 and the spray control assembly 338. The horn 446 can exit the horn slots 1642 via relative axial movement in the opposite direction.

[0206] In some examples, the base 1644 of the flared groove 1642 may be inclined. The flared groove 1642 may be configured such that the depth of the flared groove 1642 decreases from its axial opening end and as it extends axially into the valve body 364. The inclined base 1644 may facilitate the reception and contact of the inclined inner surface 1654 of the flared portion 446. The height H of the flared groove 1642 may decrease from its open end and in the upstream direction AD1 toward the collar 424 through which the flared portion 446 can enter and exit the flared groove 1642.

[0207] Users can quickly and efficiently install or remove the spray control assembly 338 with air cap 326. Remove air cap 326 to access the spray control assembly 338 for removal. With air cap 326 already removed, it can be rotated and directly engaged with the spray control assembly 338. Horn 446 is inserted into the opposing horn slot 1642. Air cap 326 can then be rotated to apply torque to the spray control assembly 338 to loosen it from the spray gun 312 and remove it for maintenance or replacement. The spray control assembly 338 is installed on the spray gun 312 before connecting air cap 326 to it. Horn 446 can be inserted into horn slot 1642, and air cap 326 can be rotated to apply torque to the spray control assembly 338, engaging the spray control assembly 338 and spray gun 312 via a threaded connection. Interfacing the air cap 326 with the spray control assembly 338 provides time and cost savings and eliminates the need for additional tools to install or remove the spray control assembly 338.

[0208] Discussion of non-exclusivity examples

[0209] The following is a non-exclusive description of possible examples based on various aspects of this disclosure.

[0210] A spray gun includes: a gun body; a bore extending within the gun body along a spraying axis; a body bore extending through the gun body and along a mounting axis; a first valve assembly at least partially disposed within the bore, the first valve assembly including a first valve configured to control the discharge of spray fluid from the spray gun; and a trigger mountable to the gun body, the trigger being configured to actuate the first valve from a closed state to an open state, wherein the trigger is movable relative to the gun body between an engaged state and a disengaged state, in which... The trigger is movable to open the first valve. In the disengaged state, the trigger is spaced apart from the first valve assembly, allowing the first valve assembly to travel axially past the trigger along the spraying axis. A trigger mount is configured to mount the trigger to the gun body. The trigger mount is actuable between a holding state and an installed state. In the holding state, the trigger mount connects the trigger to the gun body and holds the trigger in the engaged state. In the installed state, the trigger is detachable from the trigger mount and the gun body. The trigger mount includes a mount body at least partially disposed within the body bore. The mount body projects out of the body bore in a first direction along the axis to interface with a first arm of the trigger. The mount body projects out of the body bore in a second direction along the axis to interface with a second arm of the trigger. The mount body is configured to displace along the mounting axis in the second direction to place the trigger mount in the installed state.

[0211] The spray gun described in the preceding paragraph may optionally, additionally, and / or alternatively include any one or more of the following features, construction, and / or additional components:

[0212] The mounting body includes: a shaft extending along the mounting axis; a first pivot head disposed at a first end of the shaft, the first pivot head being configured to interface with a first arm to mount the trigger to the gun body; and a second pivot head disposed at a second end of the shaft, the second pivot head being configured to interface with a second arm to mount the trigger to the gun body; the first pivot head being radially larger than the shaft, and the second pivot head being radially larger than the shaft.

[0213] In both the holding state and the mounting state of the trigger mount, the second pivot head is arranged at least partially outside the gun body.

[0214] The first pivot head includes a first cylindrical support surface, on which the first arm straddles when the trigger is mounted to the trigger mount. The second pivot head includes a second cylindrical support surface, on which the second arm straddles when the trigger is mounted to the trigger mount.

[0215] When the trigger mount is in the mounted state, the first cylindrical support surface is spaced apart from the first arm along the mounting axis in the second direction, and wherein, when the trigger mount is in the mounted state, the second cylindrical support surface is spaced apart from the second arm along the mounting axis in the second direction.

[0216] At least one of the first pivot head and the second pivot head is formed separately from the shaft and is mounted to the shaft.

[0217] The first pivot head is integrally formed with the shaft, and the second pivot head is separately formed from the shaft.

[0218] The shaft and the second pivot head are connected by a threaded interface.

[0219] The shaft and the second pivot head are press-fitted together.

[0220] The first pivot head includes a first tool interface configured to receive torque input from a first tool, the first tool interface being disposed axially outside the first cylindrical support surface.

[0221] The first tool interface is arranged on the mounting axis.

[0222] The second pivot head includes a second tool interface configured to receive torque input from a second tool, the second tool interface being disposed axially outside the second cylindrical support surface.

[0223] The second tool interface is formed as the faceted exterior of the second pivot head.

[0224] The diameter of the first cylindrical support surface is larger than at least a portion of the bore of the mounting component, such that the first pivot head cannot travel along the mounting axis through the bore of the mounting component in the second direction.

[0225] The diameter of the second cylindrical support surface is larger than at least a portion of the bore of the mounting component, such that the second pivot head cannot travel along the mounting axis through the bore of the mounting component in the first direction.

[0226] The diameter of the second cylindrical support surface is larger than at least a portion of the bore of the mounting component, such that the second pivot head cannot travel along the mounting axis through the bore of the mounting component in the first direction.

[0227] The spring interfaces with the mounting body and biases the mounting body along the mounting axis in the first direction and into the holding state.

[0228] The spring is connected to the gun body and the first pivot head.

[0229] The body bore includes: a first bore portion having a first radial width, the first bore portion extending from a first lateral side of the gun body; and a second bore portion extending from the first bore portion and having a second radial width greater than the first radial width; wherein the mounting body extends through the first bore portion and the second bore portion, and the spring is supported against a first shoulder formed between the first bore portion and the second bore portion.

[0230] The diameter of the spring is larger than the diameter of the first bore portion.

[0231] The body bore also includes a third bore portion having a third radial width, the third bore portion extending from a second lateral side of the gun body into the gun body, wherein the third radial width is greater than the second radial width.

[0232] The radial width of the first pivot head is greater than the second radial width and less than the third radial width.

[0233] The spring interfaces with the mounting body and biases the mounting body along the mounting axis in the first direction and into the holding state.

[0234] The axial length of the mount body along the mounting axis is the same when the trigger mount is in the held state and when the trigger mount is in the mounted state.

[0235] The trigger further includes: a pull portion; a first arm extending from the pull portion; a second arm extending from the pull portion; a first mounting opening passing through the first arm, wherein the mounting body is disposed within the first mounting opening when the trigger mounting supports the trigger; and a second mounting opening passing through the second arm, wherein the mounting body is disposed within the second mounting opening when the trigger mounting supports the trigger.

[0236] When the trigger mount is in the mounted state and the trigger is in the spray position associated with the engagement state, the mount body is removed from the first mount opening, and when the trigger mount is in the mounted state and the trigger is in the spray position, the mount body extends through the second mount opening.

[0237] The trigger also includes a mounting slot that extends through the second arm and leads to the second mounting opening.

[0238] The mounting slot defines a displacement axis, and the trigger moves along the displacement axis between the engaged state and the disengaged state.

[0239] The mounting body slides within the mounting slot during the installation and removal of the trigger.

[0240] The opening of the first mounting component is completely radially closed.

[0241] The trigger moves vertically downward from the engaged state to the disengaged state.

[0242] The bore of the gun body opens on the first lateral side and the second lateral side of the gun body.

[0243] A second valve assembly is disposed at least partially within the bore, the second valve assembly including a second valve configured to control the flow of compressed gas within the spray gun, wherein the trigger is configured to actuate the second valve from a closed state to an open state.

[0244] The first valve and the trigger are spaced apart in a first direction along the spraying axis, and the second valve and the trigger are spaced apart in a second direction along the spraying axis.

[0245] A spray gun includes: a gun body; a bore extending within the gun body along a spraying axis; a body bore extending through the gun body and along a mounting axis; a first valve assembly at least partially disposed within the bore, the first valve assembly including a first valve configured to control the discharge of spray fluid from the spray gun; and a trigger mountable to the gun body, the trigger being configured to actuate the first valve from a closed state to an open state, wherein the trigger is movable relative to the gun body between an engaged state and a disengaged state, in which... The trigger is movable to open the first valve. In the disengaged state, the trigger is spaced apart from the first valve assembly, allowing the first valve assembly to travel axially past the trigger along the spray axis. A trigger mount is configured to mount the trigger to the gun body. The trigger mount is actuable between a holding state and an installed state. In the holding state, the trigger mount connects the trigger to the gun body and holds the trigger in the engaged state. In the installed state, the trigger is detachable from the trigger mount and the gun body. The trigger mount includes a mount body at least partially disposed within the body bore and movable relative to the gun body. The mount body is configured to displace in a single direction along the mounting axis to disengage from the first trigger arm and the second trigger arm of the trigger, and to actuate the trigger mount from the holding state to the installed state.

[0246] A method of assembling a spray gun includes: displacing a mounting body of a trigger mount in a first direction along a mounting axis of a body bore formed in the gun body of the spray gun; traveling the trigger through the mounting body such that a first pivot head of the mounting body is aligned with a first mounting opening through a first arm of the trigger, and a second pivot head of the mounting body is aligned with a second mounting opening through a second arm of the trigger; and displacing the mounting body in a second direction along the mounting axis such that the first pivot head enters the first mounting opening, and the second pivot head enters the second mounting opening.

[0247] The method described in the preceding paragraph may optionally, additionally, and / or alternatively include any one or more of the following features, constructions, and / or additional components:

[0248] Displacing the mounting body along the mounting axis in the second direction includes: using a spring arranged in the bore of the body to push the mounting body along the second direction.

[0249] The process of the trigger traveling through the mounting body further includes: traveling the first arm past the first pivot head at a position axially spaced apart from the first pivot head and the gun body in the second direction; and traveling the second arm past the second pivot head at an axial position between the second pivot head and the gun body along the mounting axis.

[0250] The mounting body is moved along the mounting axis in the first direction to remove the first pivot head from the first mounting opening and the second pivot head from the second mounting opening; and the trigger is moved through the mounting body to remove the trigger from the gun body.

[0251] A method for disassembling a spray gun includes: displacing the mounting body of a trigger mount in a first direction along a mounting axis of a body bore formed in the gun body of the spray gun, such that a first pivot head of the mounting body travels away from a first mounting opening passing through a first arm of a trigger of the spray gun, and a second pivot head of the mounting body travels away from a second mounting opening passing through a second arm of a trigger; and traveling the trigger through the mounting body to remove the trigger from the gun body.

[0252] A trigger for a spray gun includes: a trigger pull portion; a first arm extending from the trigger pull portion; a second arm extending from the trigger pull portion; a first mounting opening formed through the first arm, the first mounting opening including a first trigger support surface configured to straddle a pivot of the spray gun during actuation of the trigger; a second mounting opening formed through the second arm, the second mounting opening including a second trigger support surface configured to straddle the pivot of the spray gun during actuation of the trigger; and a tool connection portion configured to interface with a component of the spray gun to apply force to the component during one or both of installation and removal of the component of the spray gun.

[0253] The trigger in the preceding paragraph may optionally, additionally, and / or alternatively include any one or more of the following features, constructions, and / or additional components:

[0254] The tool connection portion at least partially defines the opening of the first mounting component.

[0255] The tool connection is at least partially formed by the first trigger support surface.

[0256] The first mounting opening is at least partially defined by a plurality of interface surfaces extending around the first mounting opening, and wherein the plurality of interface surfaces form both the first support surface and the tool connection portion.

[0257] The first mounting opening and the second mounting opening are arranged coaxially on the pivot axis.

[0258] The opening of the first mounting component is non-circular.

[0259] The second mounting part has a circular opening.

[0260] The tool connection is configured to twist the component.

[0261] The tool interface includes one or more protrusions extending from the first arm.

[0262] The one or more protrusions include a plurality of protrusions arranged around an axis.

[0263] A first support member is connected to the first arm and defines an opening in the first mounting member, wherein the first support member is formed of a first material and the first arm is formed of a second material different from the first material.

[0264] The first material is a metal.

[0265] The second material is a polymer.

[0266] The second support member is connected to the second arm and defines the opening of the second mounting member.

[0267] The mounting slot is formed to pass through the second arm and lead to the opening of the second mounting member.

[0268] A method for servicing a spray gun includes: disconnecting a trigger from the spray gun body; connecting the trigger to a component of the spray gun; and applying force to the component via the trigger to disconnect the component from the spray gun.

[0269] The method described in the preceding paragraph may optionally, additionally, and / or alternatively include any one or more of the following features, constructions, and / or additional components:

[0270] Connecting the trigger to the component of the spray gun includes connecting the trigger to a valve cylinder supported by the gun body of the spray gun.

[0271] Interfacing the trigger with the component of the spray gun includes receiving a portion of the component within the tool connection portion of the trigger.

[0272] Interfacing the trigger with the component of the spray gun includes: a portion of a tool connection that receives the trigger within the component.

[0273] Interfacing the trigger with the valve cylinder supported by the gun body of the spray gun includes receiving a portion of the valve cylinder within a first mounting opening passing through a first arm of the trigger, wherein, when the trigger is mounted to the gun body, the first mounting opening receives a pivot head such that the trigger rides on the pivot head.

[0274] Applying force to the component via the trigger to disconnect the component from the spray gun includes applying torque to the component via the trigger.

[0275] Applying force to the component via the trigger to disconnect the component from the spray gun includes: driving the component to rotate via the trigger to loosen the threaded interface holding the component.

[0276] A valve barrel for a spray gun includes: a valve barrel body extending along an axis and defining a flow chamber inside the valve barrel body; a nozzle formed at a first end of the valve barrel body, the nozzle being configured to output spray fluid from the flow chamber in a first direction along the axis; at least one fluid port extending through the valve barrel body between the exterior of the valve barrel body and the flow chamber formed inside the valve barrel body; and a first flared groove and a second flared groove formed in the valve barrel body, the first flared groove and the second flared groove opening in the first direction along the axis.

[0277] The valve cylinder in the preceding paragraph may optionally, additionally, and / or alternatively include any one or more of the following features, constructions, and / or additional components:

[0278] The valve body includes an axially protruding ring, a first flared groove formed on the ring, and a second flared groove formed on the ring.

[0279] The first horn-shaped groove opens radially outward and closes radially inward.

[0280] The first horn-shaped groove does not extend radially through the ring.

[0281] The first horn section groove and the second horn section groove are arranged at 180 degrees around the axis.

[0282] A method for servicing a spray gun includes: disconnecting an air cap from the spray gun body; connecting the air cap to a component of the spray gun; and applying force to the component through the air cap to disconnect the component from the spray gun.

[0283] The method described in the preceding paragraph may optionally, additionally, and / or alternatively include any one or more of the following features, constructions, and / or additional components:

[0284] Connecting the air cap to the component of the spray gun includes: inserting the first horn portion of the air cap into the first horn portion groove of the valve cylinder installed in the spray gun, and inserting the second horn portion of the air cap into the second horn portion groove of the valve cylinder.

[0285] Applying force to the component via the air cap to disconnect the component from the spray gun includes: rotating the air cap on an axis to apply torque to the valve cylinder and causing the valve cylinder to rotate relative to the gun body.

[0286] Applying force to the component via the air cap to disconnect the component from the spray gun includes rotating the air cap on an axis to apply torque to the component.

[0287] Although the invention has been described with reference to one or more exemplary embodiments, those skilled in the art will understand that various changes can be made and elements can be substituted with equivalents without departing from the scope of the invention. Furthermore, many modifications can be made to adapt particular situations or materials to the teachings of the invention without departing from the essential scope of the invention. Therefore, it is intended that the invention be limited to the specific embodiments disclosed, but rather that the invention encompass all embodiments falling within the scope of the appended claims.

Claims

1. A spray gun, comprising: Gun body; Gun bore, the gun bore extending within the gun body, the gun bore extending along the spraying axis; Body bore, the body bore extending through the gun body and along the mounting axis; A first valve assembly, at least partially disposed within the bore, includes a first valve configured to control the discharge of spray fluid from the spray gun. A trigger, which can be mounted to the gun body, is configured to actuate the first valve from a closed state to an open state, wherein the trigger is movable relative to the gun body between an engaged state and a disengaged state, in the engaged state, the trigger is movable to open the first valve, and in the disengaged state, the trigger is spaced apart from the first valve assembly such that the first valve assembly can travel axially past the trigger along the spraying axis. and A trigger mount is configured to mount the trigger to the gun body. The trigger mount is actuable between a holding state and an installed state. In the holding state, the trigger mount connects the trigger to the gun body and holds the trigger in an engaged state. In the installed state, the trigger is detachable from the trigger mount and the gun body. The trigger mount includes: Mounting body, the mounting body being at least partially disposed within the body bore, the mounting body projecting out of the body bore in a first direction along the axis to interface with a first arm of the trigger, and the mounting body projecting out of the body bore in a second direction along the axis to interface with a second arm of the trigger. The mounting body is configured to shift along the mounting axis in the second direction to place the trigger mounting in the mounting state. The mounting body includes: A shaft that extends along the mounting axis; A first pivot head, disposed at a first end of the shaft, is configured to interface with the first arm to mount the trigger to the gun body; and A second pivot head is disposed at the second end of the shaft and is configured to interface with the second arm to mount the trigger to the gun body; The first pivot head is radially larger than the shaft, and the second pivot head is radially larger than the shaft. The spray gun further includes a spring that interfaces with the mounting body and biases the shaft, the first pivot head, and the second pivot head along the mounting axis in the first direction to the holding state.

2. The spray gun according to claim 1, wherein, In both the holding state and the mounting state of the trigger mount, the second pivot head is at least partially disposed outside the gun body.

3. The spray gun according to any one of claims 1 and 2, wherein: The first pivot head includes a first cylindrical support surface, and when the trigger is mounted to the trigger mount, the first arm straddles the first cylindrical support surface; and The second pivot head includes a second cylindrical support surface, and when the trigger is mounted to the trigger mount, the second arm straddles the second cylindrical support surface.

4. The spray gun according to claim 3, wherein, When the trigger mount is in the mounted state, the first cylindrical support surface is spaced apart from the first arm along the mounting axis in the second direction, and wherein, when the trigger mount is in the mounted state, the second cylindrical support surface is spaced apart from the second arm along the mounting axis in the second direction.

5. The spray gun according to claim 3, wherein, At least one of the first pivot head and the second pivot head is formed separately from the shaft and is mounted to the shaft.

6. The spray gun according to claim 5, wherein, The first pivot head is integrally formed with the shaft, and the second pivot head is separately formed from the shaft.

7. The spray gun according to claim 6, wherein, The shaft and the second pivot head are connected by a threaded interface.

8. The spray gun according to claim 6, wherein, The shaft and the second pivot head are press-fitted together.

9. The spray gun according to claim 3, wherein, The first pivot head includes a first tool interface configured to receive torque input from a first tool, the first tool interface being disposed axially outside the first cylindrical support surface.

10. The spray gun according to claim 9, wherein, The first tool interface is arranged on the mounting axis.

11. The spray gun according to claim 3, wherein, The second pivot head includes a second tool interface configured to receive torque input from a second tool, the second tool interface being disposed axially outside the second cylindrical support surface.

12. The spray gun according to claim 11, wherein, The second tool interface is formed as the faceted exterior of the second pivot head.

13. The spray gun according to claim 3, wherein, The diameter of the first cylindrical support surface is larger than at least a portion of the bore of the mounting component, such that the first pivot head cannot travel along the mounting axis through the bore of the mounting component in the second direction.

14. The spray gun according to claim 13, wherein, The diameter of the second cylindrical support surface is larger than at least a portion of the bore of the mounting component, such that the second pivot head cannot travel along the mounting axis through the bore of the mounting component in the first direction.

15. The spray gun according to claim 3, wherein, The diameter of the second cylindrical support surface is larger than at least a portion of the bore of the mounting component, such that the second pivot head cannot travel along the mounting axis through the bore of the mounting component in the first direction.

16. The spray gun according to claim 1, wherein, The bore of the body includes: A first bore portion, the first bore portion having a first radial width, the first bore portion extending from a first lateral side of the gun body within the gun body; and The second bore portion extends from the first bore portion and has a second radial width that is greater than the first radial width; The mounting body extends through the first bore portion and the second bore portion, and the spring is supported against a first shoulder formed between the first bore portion and the second bore portion.

17. The spray gun according to claim 16, wherein, The diameter of the spring is larger than the diameter of the first bore portion.

18. The spray gun according to any one of claims 16 and 17, wherein, The bore of the body also includes: The third bore portion has a third radial width and extends from the second lateral side of the gun body into the gun body, wherein the third radial width is greater than the second radial width.

19. The spray gun according to claim 18, wherein, The radial width of the first pivot head is greater than the second radial width and less than the third radial width.

20. The spray gun according to any one of claims 1 to 2, wherein, The axial length of the mount body along the mounting axis is the same when the trigger mount is in the held state and when the trigger mount is in the mounted state.

21. The spray gun according to any one of claims 1 to 2, wherein, The trigger also includes: Pulling part; A first arm extends from the pulling part; A second arm extends from the pulling part; A first mounting opening extends through the first arm, and the mounting body is disposed within the first mounting opening when the trigger mounting supports the trigger; and The second mounting opening passes through the second arm, and the mounting body is arranged within the second mounting opening when the trigger mounting supports the trigger.

22. The spray gun according to claim 21, wherein, When the trigger mount is in the mounted state and the trigger is in the spray position associated with the engagement state, the mount body is removed from the first mount opening, and when the trigger mount is in the mounted state and the trigger is in the spray position, the mount body extends through the second mount opening.

23. The spray gun according to claim 21, wherein, The trigger also includes: The mounting groove extends through the second arm and leads to the opening of the second mounting member.

24. The spray gun according to claim 23, wherein, The mounting slot defines a displacement axis, and the trigger moves along the displacement axis between the engaged state and the disengaged state.

25. The spray gun according to claim 24, wherein, The mounting body slides within the mounting slot during the installation and removal of the trigger.

26. The spray gun according to claim 21, wherein, The opening of the first mounting component is completely radially closed.

27. The spray gun according to any one of claims 1 to 2, wherein, The trigger moves vertically downward from the engaged state to the disengaged state.

28. The spray gun according to any one of claims 1 to 2, wherein, The bore of the gun body opens on the first lateral side and the second lateral side of the gun body.

29. The spray gun according to any one of claims 1 to 2, further comprising: A second valve assembly, at least partially disposed within the bore, includes a second valve configured to control the flow of compressed gas within the spray gun, wherein the trigger is configured to actuate the second valve from a closed state to an open state.

30. The spray gun according to claim 29, wherein, The first valve and the trigger are spaced apart in a first direction along the spraying axis, and the second valve and the trigger are spaced apart in a second direction along the spraying axis.

31. A method for assembling a spray gun according to any one of claims 1-30, the method comprising: The mounting body of the trigger mount is moved in a first direction along the mounting axis of the body bore formed in the gun body of the spray gun. The trigger travels through the mounting body such that the first pivot of the mounting body is aligned with the first mounting opening passing through the first arm of the trigger, and the second pivot of the mounting body is aligned with the second mounting opening passing through the second arm of the trigger. and The mounting body is moved along the mounting axis in the second direction, such that the first pivot head enters the opening of the first mounting part, and the second pivot head enters the opening of the second mounting part; The displacement of the mounting body along the mounting axis in the second direction includes: The mounting body is pushed along the second direction by a spring arranged in the bore of the body.

32. The method according to claim 31, wherein, The process of moving the trigger through the mounting body also includes: At a position axially spaced apart from the first pivot head and the gun body in the second direction, the first arm travels past the first pivot head; and The second arm is traveled through the second pivot head at an axial position between the second pivot head and the gun body along the mounting axis.

33. The method according to any one of claims 31 to 32, further comprising: The mounting body is moved along the mounting axis in the first direction to remove the first pivot head from the first mounting opening and the second pivot head from the second mounting opening; as well as The trigger is moved through the mounting body to remove it from the gun body.

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