Spray gun component for spray gun

Abstract

The utility model discloses a spray gun component for a spray gun, the spray gun comprises a spray gun body, the spray gun component is a part of the spray gun body or a component connected to the spray gun body, the spray gun body comprises a first side and a second side which are opposite to each other, and at least one concave part is arranged on the spray gun component. The recess is formed by being recessed inward from a corresponding surface of the spray gun component where the recess is located, and the recess includes a recess bottom surface and a first recess side surface and a second recess side surface connected between the recess bottom surface and the corresponding surface. An edge of the recess bottom surface that does not intersect with the first recess side surface or the second recess side surface intersects with the corresponding surface, the first recess side surface and the second recess side surface intersect to form a corner portion or a bent portion, and the recess has a maximum recess depth at the corner portion or the bent portion. According to the arrangement of the present application, the spray gun can be supported and the shield can be retained against contamination and damage by means of the recess, and the form of the recess makes it easy to clean.

Description

Technical Field

[0001] This application generally relates to the field of spray guns, particularly spray guns for spraying paint, and more specifically to a spray gun component for a spray gun. Background Technology

[0002] A spray gun is a commonly used tool in industry, used to spray paint onto the surfaces of various objects such as furniture, machinery, and especially vehicles. A spray gun may include the spray gun body held by the user during use, and various attachments connected to the spray gun body, such as spray width control components, nozzle components, trigger components, air micrometer components, rotary joint components, air exhaust components, paint needle components, pressure measuring devices, etc.

[0003] In existing spray guns, the recesses on the surface of the spray gun body usually have a relatively small surface area, which means that small tools must be used to make them, and such recesses are difficult to clean. Utility Model Content

[0004] To overcome the aforementioned deficiencies in the prior art, this application provides a spray gun component for a spray gun, the spray gun including a spray gun body, the spray gun component being a part of the spray gun body or a component connected to the spray gun body, the spray gun body including a first side and a second side opposite to each other, at least one recess being provided on the spray gun component, the recess being formed by indentation from a corresponding surface of the spray gun component where the recess is located, the recess including a bottom surface of the recess and a first side surface of the recess and a second side surface of the recess connecting the bottom surface of the recess and the corresponding surface, an edge of the bottom surface of the recess that does not intersect with the first side surface of the recess or the second side surface of the recess intersects with the corresponding surface, the first side surface of the recess and the second side surface of the recess intersect to form a corner or a bend, the recess having a maximum recess depth at the corner or bend.

[0005] Furthermore, the first edge of the first recessed side surface that intersects with the corresponding surface and the second edge that intersects with the bottom surface of the recess converge at a first starting point, and the first edge of the second recessed side surface that intersects with the corresponding surface and the second edge that intersects with the bottom surface of the recess converge at a second starting point.

[0006] Furthermore, the depth of the recess increases linearly from the first starting point on the first recess side surface toward the corner or bend, and / or the depth of the recess increases linearly from the second starting point on the second recess side surface toward the corner or bend.

[0007] Furthermore, the angle between the first recessed side surface and the second recessed side surface is in the range of 90 degrees to 180 degrees.

[0008] Further, the spray gun component is the handle portion of the spray gun body, and the at least one recess includes a first recess, the first recess being disposed on the first side and / or the second side of the spray gun body at the handle portion, the first recess side surface of the first recess extending from the front side of the handle portion in the length direction of the spray gun toward the corner or curved portion of the first recess, and the second recess side surface of the first recess extending from the bottom side of the handle portion in the height direction of the spray gun toward the corner or curved portion of the first recess.

[0009] Furthermore, the at least one recess also includes at least one second recess, the size of which is smaller than that of the first recess, and the second recess is located within the first recess.

[0010] Furthermore, the at least one recess includes a plurality of second recesses, which are arranged in a row in the extending direction of the handle portion.

[0011] Furthermore, the first recessed side surface of the second recess is parallel to the first recessed side surface of the first recess, and the second recessed side surface of the second recess is parallel to the second recessed side surface of the first recess.

[0012] Furthermore, the spray gun component is the handle portion of the spray gun body, and the at least one recess further includes at least one third recess, which is disposed on the first side and / or the second side of the spray gun body at the handle portion and located on the rear side of the handle portion in the length direction of the spray gun.

[0013] Furthermore, the at least one recess includes a plurality of third recesses, which are arranged in a row in the extending direction of the handle portion.

[0014] Furthermore, the spray gun component is a spray width control assembly connected to the spray gun body, and the at least one recess further includes at least one fourth recess distributed around the central axis of the spray width control assembly on the outer periphery of the spray width control knob of the spray width control assembly.

[0015] Furthermore, the spray gun component is a nozzle assembly of the spray gun connected to the spray gun body, and the at least one recess further includes at least one fifth recess distributed on the outer periphery of the air cap ring of the nozzle assembly around the central axis of the nozzle assembly.

[0016] Furthermore, the spray gun component is a pressure measuring device connected to the spray gun body, and the at least one recess further includes at least one sixth recess distributed around the central axis of the pressure measuring device on the outer periphery of the housing of the pressure measuring device.

[0017] Furthermore, the spray gun component is a paint needle assembly connected to the spray gun body, and the at least one recess further includes at least one seventh recess distributed on the outer periphery of the material flow control knob of the paint needle assembly around the central axis of the paint needle assembly.

[0018] Furthermore, the spray gun component is an air micrometer assembly connected to the spray gun body, and the at least one recess further includes at least one eighth recess distributed around the central axis of the air micrometer assembly on the outer periphery of the air control knob of the air micrometer assembly.

[0019] Furthermore, the spray gun component is a trigger assembly connected to the spray gun body, and the at least one recess further includes at least one ninth recess located on at least one side of the trigger assembly.

[0020] According to the arrangement of this application, the recess can support the spray gun and keep the shield from contamination and damage, and the shape of the recess makes it easy to clean. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate this application and constitute a part of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the accompanying drawings:

[0022] Figure 1 This is a schematic side view of the spray gun of this application;

[0023] Figure 2 This is a schematic perspective view of the spray gun of this application;

[0024] Figure 3 This is a schematic perspective view showing the handle portion of the spray gun of this application, wherein details of the recess provided on the handle portion are further shown.

[0025] Figure 4 This is a schematic exploded view showing the spray gun of this application;

[0026] Figure 5 This is a schematic side view of the spray gun of this application;

[0027] Figure 6 This is a schematic longitudinal sectional view of the spray gun of this application; and

[0028] Figure 7 It shows Figure 6 Detailed image of the boxed area.

[0029] List of reference numerals

[0030] 100 spray gun

[0031] 10. Spray gun body

[0032] 101 handle part

[0033] 102 Spray gun head

[0034] 103 Air Chamber

[0035] 110 Intake Channel

[0036] 20 Spray control components

[0037] 201 Spray control knob

[0038] 202 Spraying Control Room

[0039] 30 Nozzle Assembly

[0040] 301 Paint Nozzle Seal

[0041] 302 paint nozzle

[0042] 303 Air Cap

[0043] 304 retaining ring

[0044] 305 Air Cap Ring

[0045] 40 Trigger Components

[0046] 401 trigger

[0047] 401a connecting arm

[0048] 401b joint components

[0049] 402 Selling

[0050] 403 sealing ring

[0051] 404 Snap Ring

[0052] 405 screws

[0053] 406 Pin Cap

[0054] 50 Air Micrometer Assembly

[0055] 501 Air Control Knob

[0056] 502 control sleeve

[0057] 503a, 503b sealing rings

[0058] 504 lower end

[0059] 60 Rotary Joint Assembly

[0060] 601 Rotating Component

[0061] 602 ball bearing

[0062] 603 Sealing Plug

[0063] 70 Air emission components

[0064] 701 Bushing

[0065] 701a First End

[0066] 701b second end

[0067] 701c intermediate ring

[0068] 705 Air Piston

[0069] 705a collar

[0070] 706 gap

[0071] 707 Spring

[0072] 708a First Sealing Element

[0073] 708b Second Sealing Element

[0074] 708c Third Sealing Element

[0075] 708d Fourth Sealing Element

[0076] 709 Valve Sleeve

[0077] 80 Coating Needle Assembly

[0078] 801 Coating Needle

[0079] 802 Actuator

[0080] 803 Spring

[0081] 804 Material Flow Control Knob

[0082] 804a external part

[0083] 804b internal section

[0084] 90 Pressure measuring device

[0085] 901 casing

[0086] 1 first recess

[0087] 11, 11' First concave side surface

[0088] 12, 12' Second concave side surface

[0089] 13. 13' bottom surface of concave part

[0090] 2 second recess

[0091] 3 third recess

[0092] 4 fourth concave part

[0093] 5 fifth recess

[0094] 6 Sixth recess

[0095] 7 Seventh recess

[0096] 8 Eighth recess

[0097] 9 Ninth Recess

[0098] C, C' corner or bend

[0099] d, d' Maximum indentation depth

[0100] Angle between β and β'

[0101] P1 First Starting Point

[0102] P2 Second Starting Point

[0103] X Width Direction

[0104] Y-axis length direction

[0105] Z-axis height direction Detailed Implementation

[0106] The technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0107] In the following detailed description, reference is made to the accompanying drawings, which form a part of this specification, in which specific embodiments of the present application are illustrated by way of example. Regarding the drawings, directional terms such as “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” and “rear” are used with reference to the orientation of the drawings described. Since components of the embodiments of this application can be positioned in many different orientations, directional terms are for illustrative purposes only and are not intended to be limiting. It should be understood that other embodiments may be used, and structural or logical changes may be made without departing from the scope of this application. Therefore, the following detailed description should not be construed as limiting, and the present application is defined by the appended claims.

[0108] refer to Figures 1 to 4 As illustrated by the spray gun 100 and spray gun components for the spray gun 100, it is understood that the spray gun 100 may have a substantially similar or symmetrical structure on its first and second sides, which are opposite each other. The directional terms used in this application are exemplified in relation to the orientation of the spray gun 100 shown in the figures, wherein, as shown in the coordinate system in the figures, X represents the width or lateral direction of the spray gun 100, for example, the spray width control knob 201 of the spray width control assembly 20 is located outside the spray gun body 10 in this width or lateral direction; Y represents the length or front-to-back direction of the spray gun 100, for example, the nozzle assembly 30 is located in front of the spray gun body 10 in this length or front-to-back direction; and Z represents the height or vertical direction of the spray gun 100, for example, the handle portion 101 is located at the lower part of the spray gun body 10.

[0109] like Figure 1 and Figure 2 As best illustrated, this application discloses a spray gun component for a spray gun 100. The spray gun 100 may include a spray gun body 10, and the spray gun component may be a part of the spray gun body 10 or a component attached to the spray gun body 10. The spray gun body 10 includes a first side and a second side opposite to each other. At least one recess may be provided on the spray gun component, the recess being formed by indentation from a corresponding surface of the spray gun component in which the recess is located.

[0110] like Figure 3As best illustrated, the recess may include a bottom surface 13, 13' and a first recess side surface 11, 11' and a second recess side surface 12, 12' connecting the bottom surface 13, 13' and the corresponding surface. Edges of the bottom surface 13, 13' that do not intersect with the first recess side surface 11, 11' or the second recess side surface 12, 12' may intersect with the corresponding surface. The first recess side surface 11, 11' and the second recess side surface 12, 12' intersect to form a corner or bend C, C'. The recess may have a maximum depth d, d' at the corner or bend C, C'; in other words, the maximum distance between the bottom surface 13, 13' and the corresponding surface may be located at the corner or bend C, C'.

[0111] Such a recess can have an arrow-like shape, wherein the first edges of the first recess side surfaces 11, 11' intersecting with the corresponding surfaces and the second edges of the recess bottom surfaces 13, 13' intersecting with the corresponding surfaces converge at the first starting point P1, and the first edges of the second recess side surfaces 12, 12' intersecting with the corresponding surfaces and the second edges of the recess bottom surfaces 13, 13' intersecting with the corresponding surfaces converge at the second starting point P2.

[0112] In one embodiment, the depth of the recess can increase linearly from the first starting point P1 of the first recess side surface 11, 11' toward the corner or bend C, C', and / or the depth of the recess can increase linearly from the second starting point P2 of the second recess side surface 12, 12' toward the corner or bend C, C'.

[0113] In one embodiment, the included angles β and β' between the first recessed side surfaces 11, 11' and the second recessed side surfaces 12, 12' can be in the range of 90 degrees to 180 degrees, particularly in the range of 120 degrees to 150 degrees.

[0114] In one embodiment, such as Figure 1 and Figure 2 As best shown, the spray gun component can be the handle portion 101 of the spray gun body 10, wherein at least one recess can include a first recess 1, which is disposed on a first side and / or a second side of the spray gun body 10 at the handle portion 101. The first recess side surfaces 11, 11' of the first recess 1 can extend from the front side of the handle portion 101 in the longitudinal direction Y of the spray gun 100 toward the corner or bend C, C' of the first recess 1, and the second recess side surfaces 12, 12' of the first recess 1 can extend from the bottom side of the handle portion 101 in the height direction Z of the spray gun 100 toward the corner or bend C, C' of the first recess 1.

[0115] At least one recess may further include at least one second recess 2, the size of which is smaller than that of the first recess 1. The second recess 2 may also be located on the first and / or second side of the spray gun body 10 at the handle portion 101 of the spray gun body 10, and the second recess 2 may be located within the first recess 1. The second recess 2 may be formed by recessing inward from the bottom surface of the first recess 1. Specifically, at least one recess may include a plurality of second recesses 2, which are arranged in a row along the extending direction of the handle portion 101.

[0116] Specifically, the first recessed side surfaces 11, 11' of the second recess 2 can be parallel to the first recessed side surfaces 11, 11' of the first recess 1, and the second recessed side surfaces 12, 12' of the second recess 2 can be parallel to the second recessed side surfaces 12, 12' of the first recess 1.

[0117] In one embodiment, the spray gun component may be the handle portion 101 of the spray gun body 10, wherein at least one recess may further include at least one third recess 3, and the third recess 3 may also be disposed on the first side and / or the second side of the spray gun body 10 at the handle portion 101 and located on the rear side of the handle portion 101 in the longitudinal direction Y of the spray gun 100. In particular, at least one recess may include a plurality of third recesses 3, and the plurality of third recesses 3 are arranged in a row in the extending direction of the handle portion 101.

[0118] In one embodiment, such as Figure 1 and Figure 2 As best shown, the spray gun component can be a spray width control assembly 20 of the spray gun 100 connected to the spray gun body 10. At least one recess may also include at least one fourth recess 4 distributed around the central axis of the spray width control assembly 20 on the outer periphery of the spray width control knob 201 of the spray width control assembly 20.

[0119] In one embodiment, the spray gun component may be a nozzle assembly 30 of the spray gun 100 connected to the spray gun body 10. At least one recess may also include at least one fifth recess 5 distributed around the central axis of the nozzle assembly 30 on the outer periphery of the air cap ring 305 of the nozzle assembly 30.

[0120] In one embodiment, the spray gun component can be a pressure measuring device 90 connected to the spray gun body 10 of the spray gun 100. At least one recess may further include at least one sixth recess 6 distributed around the central axis of the pressure measuring device 90 on the outer periphery of the housing 901 of the pressure measuring device 90. The included angles β, β' between the first recess side surfaces 11, 11' and the second recess side surfaces 12, 12' of the sixth recess 6 can be in the range of 10 degrees to 90 degrees, particularly in the range of 60 degrees to 80 degrees.

[0121] In one embodiment, the spray gun component may be a paint needle assembly 80 of the spray gun 100 connected to the spray gun body 10. At least one recess may also include at least one seventh recess 7 distributed around the central axis of the paint needle assembly 80 on the outer periphery of the material flow control knob 804 of the paint needle assembly 80.

[0122] In one embodiment, the spray gun component may be an air micrometer assembly 50 of the spray gun 100 connected to the spray gun body 10. At least one recess may also include at least one eighth recess 8 distributed around the central axis of the air micrometer assembly 50 on the outer periphery of the air control knob 501 of the air micrometer assembly 50.

[0123] In one embodiment, the spray gun component may be a trigger assembly 40 of the spray gun 100 connected to the spray gun body 10. At least one recess may also include at least one ninth recess 9 located on at least one side of the trigger assembly 40. The included angles β, β' between the first recess side surfaces 11, 11' and the second recess side surfaces 12, 12' of the ninth recess 9 may be in the range of 10 degrees to 90 degrees, particularly in the range of 60 degrees to 80 degrees.

[0124] The recess provided on the spray gun body 10 of this application is easy to manufacture because it has a relatively large and open surface. Moreover, due to the specific shape of the recess of this application, the cleaning agent used to clean the spray gun 100 can easily flow out from the recess, making the recess easier to clean.

[0125] The recesses in this application can be used to retain the shroud attached to the spray gun body 10 to prevent contamination and damage to the spray gun 100. In particular, the relatively large first recess 1 can be used as a stop for part of the shroud, while the relatively small second recess 2 can be used as a fixing device.

[0126] Furthermore, the recesses of this application allow the spray gun 100 to be positioned on a spray gun holder, thereby ensuring that the spray gun 100 is stably held on the spray gun holder. The recesses can also be used to attach a column to the spray gun; if multiple recesses of the same shape exist, the same column can be attached to different positions on the spray gun, thus holding the spray gun 100 at different heights or orientations using the same column.

[0127] Figure 4 as well as Figure 6 and Figure 7 Further structural details of the spray gun 100 of this application are shown. These will be described in more detail below.

[0128] The spray pattern control assembly 20 can be used to adjust the shape of the spray jet produced by the spray gun 100. The spray pattern control assembly 20 may include a spray pattern control knob 201 operated by a user to adjust the shape of the spray jet.

[0129] The nozzle assembly 30 may include a paint nozzle seal 301, a paint nozzle 302 screwed into the spray gun body 10, an air cap 303, a retaining ring 304, an air cap ring 305, and a color marking ring 306. The retaining ring 304 is used to hold the air cap 303 in the air cap ring 305, allowing rotation of the air cap 303 within the air cap ring 305, but preventing axial movement of the air cap 303 within the air cap ring 305.

[0130] The spray gun 100 may also include a trigger assembly 40 by means of which the spray gun 100 can be activated. The trigger assembly 40 includes a trigger 401, which in the illustrated embodiment has a connecting arm 401a. However, this application is not limited thereto, and the trigger assembly 40 may also have two connecting arms. The trigger 401 is held between a pin 402 and a screw 405. The pin 402 has a sealing ring 403 near its side adjacent to the trigger 401 and a retaining ring 404, which is a C-ring in the illustrated embodiment, near its end away from the trigger 401. The trigger 401 can be detachably mounted to the spray gun body 10 by snap-fit. The pin 402 with the trigger 401 attached can be pushed into the opening H of the spray gun body 10 from one side of the spray gun body 2, and the retaining ring 404 exits the spray gun body 10 on the other side, snapping against the wall of the spray gun body 10 adjacent to the opening H. The pin cap 406 can be attached to the end of the pin 402 that protrudes slightly from the opening H. In order to remove the trigger 401 from the spray gun body 10, the user only needs to press the end of the pin 402 that protrudes slightly from the opening H.

[0131] The spray gun 100 may also include an air micrometer assembly 50 for adjusting the air pressure in the spray gun 100. The air micrometer assembly 50 may include an air control knob 501, a control sleeve 502, and sealing rings 503a and 503b. A rotary joint assembly 60 may be disposed at the lower end 504 of the control sleeve 502. The lower end 504 of the control sleeve 502 may form part of the rotary joint assembly 60. The rotary joint assembly 60 also includes a rotating component 601, a set of balls 602 as part of a ball bearing, and a sealing plug 603.

[0132] The spray gun 100 may also include an air discharge assembly 70 controlled by a trigger 401, by means of which the air discharge assembly 70 can control the airflow from the lower part of the spray gun body 10 (i.e., the handle part 101) to the air outlet at the spray gun head 102.

[0133] The spray gun 100 may also include a paint needle assembly 80. The paint needle assembly 80 may include a paint needle 801, an actuator 802, a spring 803, and a material flow control knob 804. The paint needle 801 is controlled by a trigger 401 and, by means of the paint needle 801, can open and close the outlet orifice of the paint nozzle 302 to allow or block the flow of material to be ejected from the paint nozzle 302. The actuator 802 is fixed to the paint needle 801, and the spring 803 surrounds the rear portion of the paint needle 801. The front end of the spring 803 abuts against the actuator 802, and the rear end abuts against the inner surface of the material flow control knob 804. The material flow control knob 804 defines a rear stop for the paint needle 801 and defines how far the paint needle 801 can be moved from the outlet orifice of the paint nozzle 302 when the trigger 401 is pulled.

[0134] The spray gun body 10 has an opening on its rear side along its length direction Y, in which a bushing 701 is installed. The first end 701a of the bushing 701 can be non-removably attached to the spray gun body 10, for example, by tightening, bonding, and / or pressing. A sealing element, such as a sealing ring, can be provided between the spray gun body 10 and the bushing 701. The material flow control knob 804 may include an outer portion 804a and an inner portion 804b, which are immovable and non-removable from each other. The inner portion 804b may include an external thread corresponding to and engaging with the internal thread of the second end 701b of the bushing 701. When the material flow control knob 804 is rotated, it moves axially to define a rear stop for the paint needle 801. This limits the distance the paint needle, which closes the outlet of the paint nozzle 302, can move out of the paint nozzle outlet. This limits how much paint can leave the paint nozzle. An intermediate ring 701c may be provided between the external thread of the inner portion 804b of the material flow control knob 804 and the internal thread of the bushing 701. This intermediate ring 701c makes the material flow control knob 804 more difficult to turn. This prevents the user from accidentally turning the material flow control knob 804. The outer surface of the second end 701b of the bushing 701 may have marking lines and / or scales indicating the position of the material flow control knob 804 relative to the second end 701b of the bushing 701.

[0135] An air chamber 103 is provided in the spray gun body 10 and in front of the bushing 701. A valve sleeve 709 is inserted into the air chamber 103. The valve sleeve 709 has two axial openings at its two ends and a plurality of elongated openings in its outer circumferential surface, which are spaced apart from each other by ribs, advantageously 4-6 ribs. A first sealing element 708a may be provided between the valve sleeve 709 and the inner surface of the spray gun body 10 and in the region of the first end of the valve sleeve 709. A second sealing element 708b may be provided between the valve sleeve 709 and the inner surface of the spray gun body 10 and in the region of the second end of the valve sleeve 709.

[0136] A paint needle 801 extends through the air chamber 103. An air piston 705 surrounds but is not fixed to the paint needle 801, allowing the air piston 705 to slide on the paint needle 801. A third sealing element 708c is located in front of the collar 705a of the air piston 705 and around the perimeter of the air piston 705. A spring 707 is located between the rear side of the collar 705a and the bushing 701 of the air piston 705.

[0137] When trigger 401 is not activated, the third sealing element 708c abuts against the rear end of valve sleeve 709, sealing air chamber 103 relative to the interior of valve sleeve 709. When air flows into the spray gun and enters air chamber 103 through air inlet passage 110, air cannot flow into the interior of valve sleeve 709. When trigger 401 is not activated, a gap 706 is provided between the rear end of air piston 705 and the front end of actuator 802. Actuator 802 is fixed to paint needle 801 in a manner that prevents axial movement and, advantageously, rotation between the two parts. Spring 803 is disposed between actuator 802 and the internal portion 804b of material flow control knob 804.

[0138] When trigger 401 is pulled, the engaging part 401b of trigger 401 presses against the front end of air piston 705, thereby causing air piston 705 to slide backward past paint needle 801, and the third sealing element 708c to move out of its seat located behind valve sleeve 709. Air can now flow from air chamber 103 into the interior of valve sleeve 709. The front opening of valve sleeve 709 is sealed, so air can only flow out from an elongated opening in the outer circumferential surface of valve sleeve 709. From there, air flows into spray control chamber 202, where air is distributed between atomizing air passages and corner air passages. Atomizing air and corner air flow out from openings in air cap 303.

[0139] When the trigger 401 is pulled further, the rear end of the air piston 705 pushes against the actuator 802, the actuator 802 moves backward, and since the actuator 802 is fixed to the paint needle 801, the paint needle 801 also moves backward and opens the outlet of the paint nozzle 302, so that the paint can flow out from the outlet of the paint nozzle 302 and can be atomized by the atomizing air.

[0140] When trigger 401 is released, spring 803 presses actuator 802 and paint needle 801 forward, causing paint needle 801 to close the outlet of paint nozzle 302 and preventing paint from flowing out. Spring 707 presses air piston 705 forward, causing third sealing element 708c to move back to its seat located behind valve sleeve 709. Now, no air can flow from air chamber 103 into the interior of valve sleeve 709. Therefore, when trigger 401 is released, initially the outlet of paint nozzle 302 is closed, but air continues to flow from the opening of air cap 303 for a short period before the opening closes. This prevents paint from dripping from the paint nozzle without atomization.

[0141] The spray gun 100 may also include a pressure measuring device 90, particularly a digital pressure measuring device. The pressure measuring device 90 may include a housing 901.

[0142] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A spray gun component for a spray gun, the spray gun (100) including a spray gun body (10), the spray gun component being a part of the spray gun body (10) or a component connected to the spray gun body (10), the spray gun body (10) including a first side and a second side opposite to each other, and at least one recess being provided on the spray gun component, the recess being formed by indentation from a corresponding surface of the spray gun component where the recess is located. Its features are, The recess includes a bottom surface (13, 13') and a first recess side surface (11, 11') and a second recess side surface (12, 12') connecting the bottom surface (13, 13') and the corresponding surface. The edge of the bottom surface (13, 13') that does not intersect with the first recess side surface (11, 11') or the second recess side surface (12, 12') intersects with the corresponding surface. The first recess side surface (11, 11') and the second recess side surface (12, 12') intersect to form a corner or bend (C, C'). The recess has a maximum recess depth (d, d') at the corner or bend (C, C').

2. The spray gun component according to claim 1, characterized in that, The first edge of the first recessed side surface (11, 11') intersecting with the corresponding surface and the second edge of the second recessed side surface (13, 13') intersecting with the bottom surface of the recess converge at the first starting point (P1), and the first edge of the second recessed side surface (12, 12') intersecting with the corresponding surface and the second edge of the second recessed side surface (13, 13') intersecting with the bottom surface of the recess converge at the second starting point (P2).

3. The spray gun component according to claim 2, characterized in that, The depth of the recess increases linearly from the first starting point (P1) of the first recess side surface (11, 11') toward the corner or bend (C, C'), and / or the depth of the recess increases linearly from the second starting point (P2) of the second recess side surface (12, 12') toward the corner or bend (C, C').

4. The spray gun component according to claim 2, characterized in that, The included angle (β, β') between the first recessed side surface (11, 11') and the second recessed side surface (12, 12') is in the range of 90 degrees to 180 degrees.

5. The spray gun component according to claim 1, characterized in that, The spray gun component is the handle portion (101) of the spray gun body (10). The at least one recess includes a first recess (1). The first recess (1) is disposed on the handle portion (101) on the first side and / or the second side of the spray gun body (10). The first recess side surface of the first recess (1) extends from the front side of the handle portion (101) in the length direction (Y) of the spray gun (100) toward the corner or bend of the first recess (1). The second recess side surface of the first recess (1) extends from the bottom side of the handle portion (101) in the height direction (Z) of the spray gun (100) toward the corner or bend of the first recess (1).

6. The spray gun component according to claim 5, characterized in that, The at least one recess further includes at least one second recess (2), the size of the second recess (2) being smaller than the size of the first recess (1), and the second recess (2) being located within the first recess (1).

7. The spray gun component according to claim 6, characterized in that, The at least one recess includes a plurality of second recesses (2), which are arranged in a row in the extending direction of the handle portion (101).

8. The spray gun component according to claim 6, characterized in that, The first recess side surface of the second recess (2) is parallel to the first recess side surface of the first recess (1), and the second recess side surface of the second recess (2) is parallel to the second recess side surface of the first recess (1).

9. The spray gun component according to claim 1, characterized in that, The spray gun component is the handle portion (101) of the spray gun body (10). The at least one recess further includes at least one third recess (3). The third recess (3) is disposed on the handle portion (101) on the first side and / or the second side of the spray gun body (10) and is located on the rear side of the handle portion (101) in the length direction (Y) of the spray gun (100).

10. The spray gun component according to claim 9, characterized in that, The at least one recess includes a plurality of the third recesses (3), which are arranged in a row in the extending direction of the handle portion (101).

11. The spray gun component according to claim 1, characterized in that, The spray gun component is a spray width control assembly (20) connected to the spray gun body (10) of the spray gun (100). The at least one recess also includes at least one fourth recess (4) distributed around the central axis of the spray width control assembly (20) on the outer periphery of the spray width control knob (201) of the spray width control assembly (20).

12. The spray gun component according to claim 1, characterized in that, The spray gun component is a nozzle assembly (30) of the spray gun (100) connected to the spray gun body (10), and the at least one recess further includes at least one fifth recess (5) distributed on the outer periphery of the air cap ring (305) of the nozzle assembly (30) around the central axis of the nozzle assembly (30).

13. The spray gun component according to claim 1, characterized in that, The spray gun component is a pressure measuring device (90) connected to the spray gun body (10) of the spray gun (100), and the at least one recess also includes at least one sixth recess (6) distributed on the outer periphery of the housing (901) of the pressure measuring device (90) around the central axis of the pressure measuring device (90).

14. The spray gun component according to claim 1, characterized in that, The spray gun component is a paint needle assembly (80) of the spray gun (100) connected to the spray gun body (10). The at least one recess also includes at least one seventh recess (7) distributed around the central axis of the paint needle assembly (80) on the outer periphery of the material flow control knob (804) of the paint needle assembly (80).

15. The spray gun component according to claim 1, characterized in that, The spray gun component is an air micrometer assembly (50) connected to the spray gun body (10) of the spray gun (100). The at least one recess also includes at least one eighth recess (8) distributed around the central axis of the air micrometer assembly (50) on the outer periphery of the air control knob (501) of the air micrometer assembly (50).

16. The spray gun component according to claim 1, characterized in that, The spray gun component is a trigger assembly (40) of the spray gun (100) connected to the spray gun body (10), and the at least one recess further includes at least one ninth recess (9) located on at least one side of the trigger assembly (40).

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