CN210357661U - Spray gun - Google Patents

Abstract

The utility model provides a spray gun relates to spraying technical field. A spray gun is disclosed, which is substantially the same in application and use as a conventional spray gun. Common spray guns include cosmetic spray guns and paint spray guns (i.e., paint spray guns) that atomize paint into fine droplets by compressed air and spray the droplets onto a surface of an object to be coated under the drive of an air stream. Compared with the traditional manual painting, the paint spraying gun has the advantages of higher timeliness and more attractive appearance, the efficiency is 5-10 times higher than that of brushing, and the coating is fine, smooth and uniform. The utility model provides a spray gun includes rifle head, rifle main part and coupling assembling, and the rifle head passes through coupling assembling with the rifle main part and realizes dismantling the connection for the rifle head can separate mutually with the rifle main part, has solved the inside problem of wasing the difficulty of spray gun after the spray gun uses. Simultaneously, the detachable connection between the gun head and the gun main body enables the spray gun to be placed with the gun head and the gun main body separately when the spray gun is idle, so that the occupied space is reduced, and the spray gun is convenient to carry and store.

Description

Spray gun

Technical Field

The utility model relates to a spraying technical field particularly, relates to a spray gun.

Background

A spray gun is a device that uses a quick release of liquid or compressed air as a motive force. Common spray guns are cosmetic spray guns and paint spray guns (i.e., paint spray guns). Compared with the traditional manual painting, the paint spraying gun has the advantages of higher timeliness and more attractive appearance, the efficiency is 5-10 times higher than that of brushing, and the coating is fine, smooth and uniform. Although the spray gun is convenient to use, the interior of the spray gun is difficult to clean thoroughly after the spray gun is used every time, and secondary use of the spray gun is greatly influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spray gun, it can realize dismantling of rifle main part and rifle head and be connected, not only makes the washing of spray gun more convenient, swift, has still reduced the occupation space of spray gun, makes carrying of spray gun more convenient.

The embodiment of the utility model is realized like this:

the utility model provides a spray gun device, its includes rifle head, rifle main part and coupling assembling, and the rifle head passes through with the rifle main part coupling assembling can dismantle the connection. The detachable connection is arranged, so that the spray gun is more convenient and quicker to clean, the occupied space of the spray gun is reduced, and the spray gun is more convenient to carry.

In some embodiments of the present invention, the connecting assembly includes a first fixing assembly and a second fixing assembly disposed opposite to each other. The first fixing assembly and the second fixing assembly lock or unlock the gun head together. The gun head is locked to realize the connection and fixation of the gun head and the gun main body, and the gun head is unlocked to realize the detachment of the gun head and the gun main body.

In some embodiments of the present invention, the first fixing component includes a first pressing portion and a first clamping portion. The first pressing part and the first clamping part are matched together to lock the gun head or unlock the gun head. The first pressing part provides an operating platform for a user to detach the gun head from the gun main body, and the first clamping part can continuously lock the gun head.

In some embodiments of the utility model, first pressing portion includes interconnect's first button and first depression bar, and first button is configured to control first depression bar and presses or removes pressing of first card solid portion so that first card solid portion removes the locking to the rifle head or realizes the locking to the rifle head to first card solid portion. When the user does not apply acting force and makes first card portion of blocking receive to press at first button for the rifle head can be in locking state always, and convenience of customers daily use prevents simultaneously that the rifle head is not hard up when the spray gun uses and to the effect of spraying paint and influence, and user's operational safety also receives the influence simultaneously.

In some embodiments of the present invention, the first clamping portion includes a first torsion spring, a first pressing plate and a first buckle. The rifle main part is provided with first installation department, and first torsional spring and first clamp plate are all installed in first installation department. The first buckle is installed at one end of the first pressing plate and connected with the free end of the first torsion spring. The first pressing part is configured to press or release the pressing of the first pressing plate at one end of the first pressing plate far away from the first buckle, and can drive the first torsion spring to drive the first buckle, so that the first buckle releases the locking of the gun head or locks the gun head. When the user does not apply acting force and makes first card portion of blocking receive to press at first button for the rifle head can be in locking state always, and convenience of customers daily use prevents simultaneously that the rifle head is not hard up when the spray gun uses and to the effect of spraying paint and influence, and user's operational safety also receives the influence simultaneously.

In some embodiments of the present invention, the first mounting portion includes a first supporting plate, a first rotating shaft, a first supporting seat and a second supporting seat which are arranged oppositely, and a first connecting column and a second connecting column which are arranged oppositely. The first supporting seat and the second supporting seat are both located between the first connecting column and the second connecting column, and two ends of the first rotating shaft are rotatably mounted on the first supporting seat and the second supporting seat. The first torsion spring is sleeved on the first rotating shaft, and the first pressing plate is connected with the first rotating shaft. First torsional spring and first clamp plate all are located between first supporting seat and the second supporting seat, realize the fixed of first card solid portion. The both ends of first backup pad link to each other with first spliced pole, second spliced pole respectively, and first backup pad is located first clamp plate top, and the restriction is at axial direction's displacement range, prevents that the button from leading to first torsion spring atress too big and damaging in too deep rifle main part.

The utility model discloses an in some embodiments, the fixed subassembly of second includes that the second presses splenium and second card solid portion, and the second presses splenium and the common cooperation of second card solid portion to lock the rifle head or remove the locking to the rifle head, and the second presses the splenium to provide the operation platform who realizes rifle head and rifle main part dismantlement for the user, and second card solid portion can realize the locking that lasts to the rifle head.

In some embodiments of the utility model, the second presses the splenium to include interconnect's second button and second depression bar, and the second button is configured to control the second depression bar and presses or removes pressing of second card solid portion so that the locking of rifle head or the locking of realization to the rifle head is removed to second card solid portion. When the user does not apply acting force and makes first card portion of blocking receive to press at first button for the rifle head can be in locking state always, and convenience of customers daily use prevents simultaneously that the rifle head is not hard up when the spray gun uses and to the effect of spraying paint and influence, and user's operational safety also receives the influence simultaneously.

In some embodiments of the present invention, the second clamping portion includes a second torsion spring, a second pressing plate and a second buckle. The rifle main part is provided with the second installation department, and second torsional spring and second clamp plate are all installed in the second installation department. The second buckle is installed at one end of the second pressure plate and is connected with the free end of the second torsion spring. The second pressing part is configured to press or release the pressing of the second pressing plate at one end of the second pressing plate far away from the second buckle, so that the second torsion spring drives the second buckle to release the locking of the gun head or lock the gun head. When the user does not apply acting force and makes first card portion of blocking receive to press at first button for the rifle head can be in locking state always, and convenience of customers daily use prevents simultaneously that the rifle head is not hard up when the spray gun uses and to the effect of spraying paint and influence, and user's operational safety also receives the influence simultaneously.

In some embodiments of the present invention, the second mounting portion includes a second supporting plate, a second rotating shaft, a third supporting seat and a fourth supporting seat which are arranged relatively, and a third connecting column and a fourth connecting column which are arranged relatively. The third supporting seat and the fourth supporting seat are both located between the third connecting column and the fourth connecting column, and two ends of the second rotating shaft are rotatably mounted on the third supporting seat and the fourth supporting seat respectively. The second rotating shaft is sleeved with the second torsion spring, and the second pressing plate is connected with the second rotating shaft. The second torsional spring and the second pressing plate are both located between the third supporting seat and the fourth supporting seat, and the first clamping portion is fixed. The two ends of the second supporting plate are connected with the third connecting column and the fourth connecting column respectively, the second supporting plate is located above the second pressing plate, the moving range in the axial direction is limited, and the button is prevented from being excessively deep into the gun body to cause the first torsion spring to be excessively stressed and damaged.

The embodiment of the utility model provides an at least, have following advantage or beneficial effect:

the utility model provides a spray gun, its application and the suitable mode with traditional spray gun are roughly the same. Common spray guns include cosmetic spray guns and paint spray guns (i.e., paint spray guns) that atomize paint into fine droplets by compressed air and spray the droplets onto a surface of an object to be coated under the drive of an air stream. Compared with the traditional manual painting, the paint spraying gun has the advantages of higher timeliness and more attractive appearance, the efficiency is 5-10 times higher than that of brushing, and the coating is fine, smooth and uniform. But traditional spray gun structurally rifle head and rifle main part be fixed connection, can't separate rifle head and rifle main part, lead to hardly carrying out comparatively thorough washing to the spray gun inside after using the spray gun at every turn, have great influence to the secondary use of spray gun. The utility model provides a spray gun mainly includes rifle head, rifle main part and coupling assembling. And the gun head and the gun main body are detachably connected through the connecting assembly. The rifle head can be dismantled in case the realization is connected with the rifle main part, and after the spray gun used, the user just can unpack apart rifle head and rifle main part, implements the cleanness to the inside of rifle head and rifle main part, has solved the inside difficult problem of washing of spray gun after the spray gun uses, and the dismantlement between rifle head and the rifle main part is connected simultaneously and is also made the spray gun and can separately place rifle head and rifle main part when idle, reduces occupation space, convenient storage and carries.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a spray gun according to an embodiment of the present invention;

FIG. 2 is a view taken along line A of FIG. 1;

fig. 3 is a schematic structural diagram of a first fixing assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a first fastening portion according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first pressing plate according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first installation portion according to an embodiment of the present invention.

Icon: 100-a spray gun; 110-a lance head; 112-a nozzle; 114-a trigger; 150-a gun body; 152-a pump body; 154-a grip; 156-power line; 160-material tank; 200-a connection assembly; 210-a first stationary component; 220-a first pressing part; 222-a first button; 224-a first plunger; 226-a first limit boss; 230-a first clamping part; 232-a first torsion spring; 234 — a first platen; 236-a first catch; 238-a first groove; 240-first mount portion; 242-a first support plate; 243-arc-shaped groove; 244-a first rotating shaft; 246-first support; 248-a second support seat; 250-a first connecting column; 252-a second connecting column; 260-second fixing assembly.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when in use, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be interpreted as a limitation of the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Examples

Referring to fig. 1, fig. 1 is a schematic structural view of a spray gun 100. The embodiment provides a spray gun 100, which comprises a gun head 110, a gun main body 150 and a connecting assembly 200, wherein the gun head 110 and the gun main body 150 are detachably connected through the connecting assembly 200. The inventor finds that the traditional spray gun structurally comprises a spray head and a gun seat which are fixedly connected, and the spray head and the gun seat cannot be separated, so that the traditional spray gun is difficult to clean the interior of the spray gun more thoroughly after being used every time, and has great influence on secondary use of the traditional spray gun. The embodiment of the utility model provides a spray gun 100 has realized through coupling assembling 200 that the dismantlement of rifle head 110 and rifle main part 150 is connected for rifle head 110 can separate mutually with rifle main part 150, has solved the inside difficult problem of wasing of spray gun 100 after spray gun 100 uses. Meanwhile, the detachable connection between the gun head 110 and the gun main body 150 enables the gun head 110 and the gun main body 150 to be separately arranged when the spray gun 100 is idle, so that the occupied space is reduced, and the carrying and the storage are convenient.

The spray gun 100 is further provided with a bucket 160. in fig. 1, the bucket 160 is shown in a state in which the bucket 160 is mounted to the spray gun 100, and the bucket 160 is used to contain paint. The gun head 110 includes a nozzle 112, and a trigger 114, which is actuated by a user to actuate the spray gun 100, whereby paint is ejected from the nozzle 112. The gun body 150 also includes a pump body 152, a grip 154, and a power cord 156. The pump body 152 is used to compress air, the handle 154 provides a holding position for the user, and the power cord 156 is connected to a power source to provide the spray gun 100 with the power needed for spraying.

In use, paint is loaded into the bucket 160, the power cord 156 is connected to the power source, the grip 154 is held, the gun head 110 is aligned with the spray area, the trigger 114 is pulled down to operate the pump body 152 through the internal circuit, and the pump body 152 compresses air and sends the compressed air to the gun head 110. Because the air velocity at the outlet of the feeding pipe in the charging bucket 160 is relatively high, a pressure difference is formed between the outlet and the inlet of the feeding pipe, so that the coating is sucked up the feeding pipe and is sent to the gun head 110, and the coating passes through the nozzle 112 at a high speed to be atomized into fine paint droplets, and the fine paint droplets are sprayed on the surface of the object to be coated under the driving of the air flow.

Referring to fig. 2, fig. 2 is a view taken along direction a of fig. 1. The connecting assembly 200 includes a first fixing assembly 210 and a second fixing assembly 260 disposed opposite to each other. The first fixing member 210 and the second fixing member 260 are respectively disposed at both sides of the gun body 150, and the first fixing member 210 and the second fixing member 260 are symmetrically disposed. The first fixing assembly 210 and the second fixing assembly 260 cooperate to lock the lance tip 110 or unlock the lance tip 110. It should be noted that in other embodiments, the two fixing assemblies may not be arranged in a standard symmetrical manner, as long as the two fixing assemblies can cooperate to fix the lance tip 110.

Referring to fig. 3, fig. 3 is a schematic structural diagram of the first fixing element 210. The first fixing member 210 includes a first pressing portion 220 and a first fastening portion 230. The first pressing portion 220 is located in a region of a first through hole (not shown in fig. 3, but the position where the first through hole is opened can be observed in fig. 1) opened in the gun body 150, and the first pressing portion 220 can move in an axial direction of the first through hole. The first catching portion 230 is connected to the gun body 150. The first pressing portion 220 cooperates with the first locking portion 230 to lock or unlock the lance tip 110. In this embodiment, a user can release the locking of the lance tip 110 by pressing the first pressing portion 220 and the first locking portion 230. When the user does not press the first pressing portion 220, the first clamping portion 230 is not pressed, and the lance tip 110 is in a locked state.

The first pressing portion 220 includes a first button 222 and a first pressing lever 224 connected to each other. In this embodiment, the first button 222 and the first pressing rod 224 are fixedly connected (e.g., glued or welded), and in other embodiments, the first button 222 and the first pressing rod 224 may be detachably connected, e.g., screwed or clamped. The user performs the pressing operation of the first pressing lever 224 by applying a force to the first button 222. The first button 222 is configured to: when the first button 222 controls the first pressing rod 224 to press the first clamping part 230, the first clamping part 230 releases the locking of the gun head 110; when the first button 222 controls the first pressing rod 224 to release the pressing of the first clamping part 230, the first clamping part 230 realizes the locking of the lance tip 110.

The end of the first pressing rod 224, which is far away from the first button 222, is further provided with a first limiting boss 226, the first pressing rod 224 penetrates through the first through hole, the diameter of the first limiting boss 226 is larger than that of the first through hole, the position of the first pressing part 220 in the axial direction of the first through hole is limited, and the first pressing part 220 is prevented from falling off from the gun body 150.

The first trim portion 230 includes a first torsion spring 232, a first pressure plate 234, and a first catch 236. The first catch 236 is mounted to an end of the first pressure plate 234, and the first catch 236 is connected to a free end of the first torsion spring 232 such that the free end of the first torsion spring 232 can rotate synchronously with the first catch 236. In this embodiment, the first buckle 236 and the first pressing plate 234 are integrally formed (in other embodiments, the first buckle may be connected by welding, clamping, or the like). The first catch 236 is in engagement with the free end of the first torsion spring 232 as shown in fig. 3. In other embodiments, the first catch 236 and the free end of the first torsion spring 232 may also be engaged with each other, for example, the free end of the first torsion spring 232 passes through the first catch 236 without connection, as long as the relative position between the first catch 236 and the free end of the first torsion spring 232 is not changed. That is, the free end of the first torsion spring 232 can displace with the first catch 236 in the same manner, and the free end of the first torsion spring 232 can also displace with the first catch 236 in the same manner.

Referring to fig. 4, fig. 4 is a schematic structural diagram of the first fastening portion 230. The first torsion spring 232 in this embodiment is a double torsion spring. The first torsion spring 232 is spatially matched to the first pressure plate 234 such that a user may effect rotation of the first torsion spring 232 by applying a force to the first pressure plate 234. The first torsion spring 232 is arranged not to be in tension when the first pressing part 220 does not start acting, so that the first catch 236 can lock the lance tip 110. After the first pressing portion 220 controls the first pressing rod 224 to press the first pressing plate 234, that is, the user presses the first button 222, so that the first pressing rod 224 presses down the left end of the first pressing plate 234 in fig. 4, and the right end of the first pressing plate 234 drives the first torsion spring 232 to rotate upward, so that the first buckle 236 releases the locking of the lance head 110. After the first pressing portion 220 releases the pressing on the left end of the first pressing plate 234, the free end of the first torsion spring 232 moves toward the direction close to the first pressing plate 234 under the action of elastic potential energy of the first torsion spring 232, that is, the first buckle 236 is driven to rotate downward, so that the gun head 110 is automatically locked.

A first groove 238 is formed at one end of the first pressing plate 234 away from the first buckle 236 and at a side close to the first pressing portion 220. When the first pressing rod 224 presses the first pressing plate 234, it will be directly pressed into the first groove 238 to prevent the sliding between the first pressing rod 224 and the first pressing plate 234 due to the inclination of the first pressing plate 234 when the first pressing rod 224 contacts the first pressing plate 234. In other embodiments, the first pressure plate 234 may not have the first groove 238, as long as the first pressure rod 224 can be prevented from sliding when contacting the first pressure plate 234. If sliding occurs between the first pressing rod 224 and the first pressing plate 234, the first pressing plate 234 cannot release the locking of the gun head 110, so that the operation of the user fails.

The gun body 150 is provided with a first mounting portion 240 for primarily providing a proper mounting position for the first clamping portion 230. The first torsion spring 232 and the first presser plate 234 are mounted to the first mounting portion 240.

Referring to fig. 5 and 6, fig. 5 is a schematic view illustrating a connection structure between the first pressing plate 234 and the first rotating shaft 244; fig. 6 is a schematic structural diagram of the first mounting portion 240. The first mounting portion 240 includes a first support plate 242, a first rotating shaft 244, first and second support seats 246 and 248 disposed opposite to each other, and first and second connection posts 250 and 252 disposed opposite to each other. The first support base 246, the second support base 248, the first connecting post 250, and the second connecting post 252 are connected to the gun body 150. In this embodiment, the first support seat 246, the second support seat 248 and the gun body 150 are integrally formed (in other embodiments, they may be separately connected, such as welded or clamped), the first connection column 250 and the second connection column 252 are respectively provided with a first threaded hole (not shown) and a second threaded hole (not shown), and the first connection column 250 and the second connection column 252 are connected with the gun body 150 through screws and threaded holes (in other embodiments, an integrally formed connection manner may also be adopted).

The first rotating shaft 244 is rotatably mounted at both ends thereof to the first support base 246 and the second support base 248, respectively. The first support seat 246 and the second support seat 248 provide support for the rotation of the first rotating shaft 244.

The first support seat 246 and the second support seat 248 are located between the first connecting column 250 and the second connecting column 252. The first connection column 250, the second connection column 252 and the first rotation shaft 244 are prevented from interfering with each other in spatial position.

Referring to fig. 5 again, the first pressing plate 234 is connected to the first rotating shaft 244. The first rotating shaft 244 penetrates through a major arc groove in the middle of the first pressing plate 234, so that the first rotating shaft 244 and the first pressing plate 234 are fixedly connected. After the first pressing portion 220 acts on the first pressing plate 234, the first rotating shaft 244 is provided to smoothly rotate the first pressing plate 234 and to support the first pressing plate 234.

Referring to fig. 4 again, the first torsion spring 232 is sleeved on the first rotating shaft 244. The two spiral sections of the first torsion spring 232 are respectively located at both sides of the first pressing plate 234, so that the free end of the first torsion spring 232 is prevented from moving and interfering with the first pressing plate 234, and the first pressing plate 234 can also limit the sliding of the first torsion spring 232 in the axial direction of the first rotating shaft 244.

The first torsion spring 232 and the first pressure plate 234 are each located between the first support base 246 and the second support base 248. The first support seat 246 and the second support seat 248 cooperate to restrict the sliding of the first torsion spring 232 and the first presser plate 234 in the axial direction of the first rotating shaft 244 while preventing the first support seat 246 and the second support seat 248 from interfering with the movement of the free end of the first torsion spring 232.

The first supporting plate 242 is located above the first pressing plate 234, and both ends of the first supporting plate 242 are connected to the first connecting column 250 and the second connecting column 252, respectively. In this embodiment, threaded holes (not shown) matching with the first connecting column 250 and the second connecting column 252 are respectively formed at two ends of the first supporting plate 242, and the first supporting plate 242 is connected with the first connecting column 250 and the second connecting column 252 through screws. In other embodiments, the connection mode between the two ends of the first supporting plate 242 and the first and second connecting posts 250 and 252 may also be fixed connection such as welding, gluing, etc.

The first support plate 242 is provided so that when the first pressing portion 220 is pressed to a certain extent, the first button 222 is brought into contact with the first support plate 242, thereby preventing the first pressing portion 220 from being pressed further. This arrangement can prevent the first pressing plate 234 from being excessively displaced under the pressing of the first pressing portion 220, which causes the first torsion spring 232 to be excessively tensioned beyond the elastic limit, and thus the elastic deformation of the first torsion spring 232 is disabled or even the first torsion spring 232 is broken.

One side that first backup pad 242 is close to first pressing portion 220 is provided with arc-shaped groove 243, makes the profile at first backup pad 242 edge and first pressing portion 220 matching degree of pressing higher, makes to press more smoothly.

Referring to fig. 2 again, in this embodiment, the structure of the second fixing assembly 260 is completely the same as that of the first fixing assembly 210, and the second fixing assembly 260 and the first fixing assembly 210 are symmetrically arranged and cooperate to complete locking of the lance tip 110 or unlocking of the lance tip 110. The specific structure of the second fixing member 260 may be entirely referred to the structure of the first fixing member 210.

The operating principle of the spray gun 100 is:

prior to use, the lance tip 110 is connected to the lance body 150 by the first and second securing assemblies 210 and 260. The first pressing portion 220 is pressed, the first pressing portion 220 presses one end of the first pressing plate 234 away from the first buckle 236, so that the free end of the first torsion spring 232 drives the first buckle 236 to pop out, and the same operation is performed on the second fixing assembly 260; then, the gun head 110 is connected with the gun main body 150, the first pressing part 220 and the second pressing part are loosened, the free end of the first torsion spring 232 drives the first buckle 236 to complete locking of the gun head 110 under the action of elastic potential energy, and the free end of the second torsion spring drives the second buckle to complete locking of the gun head 110 under the action of elastic potential energy.

In use, paint is loaded into the bucket 160, the power cord 156 is connected to the power source, the grip 154 is held, the gun head 110 is aligned with the spray area, the trigger 114 is pulled down to operate the pump body 152 through the internal circuit, and the pump body 152 compresses air and sends the compressed air to the gun head 110. Because the air velocity at the outlet of the feeding pipe in the charging bucket 160 is very fast, a pressure difference is formed between the outlet and the inlet of the feeding pipe, so that the coating is sucked up the feeding pipe and is sent to the gun head 110, and the coating passes through the nozzle 112 at a high speed to be atomized into fine paint droplets, and the fine paint droplets are sprayed on the surface of the object to be coated under the driving of the air flow.

After use, the first button 222 and the second button are pressed simultaneously, and the first pressing rod 224 presses one end of the first pressing plate 234 away from the first catch 236, so that the first torsion spring 232 drives the first catch 236 to pop out, thereby completing the unlocking of the lance tip 110. The second pressing portion has the same action principle as the first pressing portion 220, and the second buckle simultaneously releases the locking of the gun head 110, so that the gun head 110 and the gun body 150 can be detached and separated. The detachable connection between the lance tip 110 and the lance body 150 solves the problem of difficulty in cleaning the interior of the lance 100 after use of the lance 100. Meanwhile, the detachable connection between the gun head 110 and the gun main body 150 enables the gun head 110 and the gun main body 150 to be separately arranged when the spray gun 100 is idle, so that the occupied space is reduced, and the carrying and the storage are convenient.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The spray gun is characterized by comprising a gun head, a gun main body and a connecting assembly, wherein the gun head is detachably connected with the gun main body through the connecting assembly, the connecting assembly comprises a first fixing assembly and a second fixing assembly which are arranged oppositely, and the first fixing assembly and the second fixing assembly jointly lock or unlock the gun head.

2. The spray gun of claim 1, wherein the first fixing assembly comprises a first pressing portion and a first clamping portion, and the first pressing portion and the first clamping portion cooperate together to lock or unlock the gun head.

3. The spray gun of claim 2, wherein the first pressing portion comprises a first button and a first pressing rod which are connected with each other, and the first button is configured to control the first pressing rod to press or release the first clamping portion so as to enable the first clamping portion to release the locking of the gun head or realize the locking of the gun head.

4. The spray gun of claim 2, wherein the first clamping portion comprises a first torsion spring, a first pressing plate and a first buckle, the gun body is provided with a first installation portion, the first torsion spring and the first pressing plate are both installed on the first installation portion, the first buckle is installed at one end of the first pressing plate and is connected with a free end of the first torsion spring, and the first pressing portion is configured to press or release the pressing of the first pressing plate on one end of the first pressing plate, which is far away from the first buckle, so that the first torsion spring drives the first buckle to release the locking of the gun head or lock the gun head.

5. The spray gun of claim 4 wherein said first mounting portion comprises a first support plate, a first rotatable shaft, first and second oppositely disposed support seats, first and second oppositely disposed connecting posts, the first supporting seat and the second supporting seat are both positioned between the first connecting column and the second connecting column, two ends of the first rotating shaft are respectively and rotatably arranged on the first supporting seat and the second supporting seat, the first torsion spring is sleeved on the first rotating shaft, the first pressure plate is connected with the first rotating shaft, the first torsion spring and the first pressing plate are both positioned between the first supporting seat and the second supporting seat, the two ends of the first supporting plate are respectively connected with the first connecting column and the second connecting column, and the first supporting plate is located above the first pressing plate.

6. The spray gun of claim 1, wherein the second fixing assembly comprises a second pressing portion and a second clamping portion, and the second pressing portion and the second clamping portion cooperate together to lock or unlock the gun head.

7. The spray gun of claim 6, wherein the second pressing portion comprises a second button and a second pressing rod which are connected with each other, and the second button is configured to control the second pressing rod to press or release the second clamping portion so as to release the second clamping portion from locking the gun head or realize locking the gun head.

8. The spray gun of claim 6, wherein the second clamping portion comprises a second torsion spring, a second pressing plate and a second buckle, the gun body is provided with a second installation portion, the second torsion spring and the second pressing plate are both installed on the second installation portion, the second buckle is installed at one end of the second pressing plate and is connected with a free end of the second torsion spring, and the second pressing portion is configured to press or release the pressing of the second pressing plate on one end of the second pressing plate, which is far away from the second buckle, so that the second torsion spring drives the second buckle to release the locking of the gun head or lock the gun head.

9. The spray gun of claim 8 wherein said second mounting portion includes a second support plate, a second pivot axis, third and fourth opposed support blocks, third and fourth opposed attachment posts, the third supporting seat and the fourth supporting seat are both positioned between the third connecting column and the fourth connecting column, two ends of the second rotating shaft are respectively and rotatably arranged on the third supporting seat and the fourth supporting seat, the second torsion spring is sleeved on the second rotating shaft, the second pressure plate is connected with the second rotating shaft, the second torsion spring and the second pressing plate are both positioned between the third supporting seat and the fourth supporting seat, and two ends of the second support plate are respectively connected with the third connecting column and the fourth connecting column, and the second support plate is positioned on the second pressing plate.

Images