Spray gun

Abstract

A spray gun comprises a gun handle, a gun body arranged at the upper end of the gun handle and a nozzle arranged at the right end of the gun body, a quick connector is arranged at the lower end of the gun handle, a water spraying flow channel communicated with the nozzle is arranged in the gun body, the gun body is covered with a gun body shell matched with the gun body, and a trigger matched with the gun handle is hinged to the right side of the upper end of the gun handle. The gun handle is covered with a gun handle shell matched with the gun handle, a movable notch matched with the trigger is formed in the right side of the upper portion of the gun handle shell, and an upper water inlet runner communicated with the water spraying runner is arranged in the upper portion of the gun handle; and a lower water inlet flow channel communicated with the quick connector is arranged in the lower part of the gun handle. The spray gun can be always kept in the open state after the trigger is pressed once, a user does not need to press the trigger for a long time to maintain the open state of the spray gun, and therefore the situation that the user presses the trigger for a long time and consequently the water spraying state is not stable is effectively avoided; and only the damaged gun body or gun handle needs to be replaced, so that the replacement cost is effectively saved.

Description

Technical Field

[0001] The utility model relates to a spray gun. Background Art

[0002] A spray gun is a handheld device that can spray liquid. The bottom of the spray gun handle has a quick connector for connecting a hose, and the other end of the hose is connected to a container storing liquid. When the spray gun needs to be used, the user can hold the spray gun handle and press the trigger. When the trigger is pressed, the opening and closing parts inside the spray gun that are used to control the opening and closing will move. At this time, the opening and closing hole inside the handle opens, and the liquid in the container will enter the water spray channel in the spray gun through the opening and closing hole under the action of air pressure, and finally be atomized or pressurized through the nozzle of the spray gun and sprayed from the nozzle to the outside for use.

[0003] It can be seen from this that if you want to keep the spray gun in an open state for a long time, you need to press the trigger for a long time to keep the opening and closing part in a pressed state. Once the trigger is released, the opening and closing part will quickly reset under the action of the spring without external force, causing the spray gun to automatically close. The long-term pressing action will cause the fingers used for pressing to feel tired, and the strength of the fingers will weaken. As the finger strength weakens, the position of the opening and closing part will become unstable, which will eventually affect the opening and closing state of the opening and closing hole inside the gun handle, thereby affecting the water spraying state of the spray gun. Long-term use of the spray gun will cause finger strain and endanger the health of the user.

[0004] The gun body and gun handle of a traditional spray gun are integrally formed, which makes it difficult to process the flow channels inside the gun body and gun handle. Once the spray gun is partially damaged, the gun body and gun handle need to be completely replaced, resulting in extremely high replacement costs. Summary of the invention

[0005] The utility model aims to solve the existing technical problem and provide a spray gun which can always remain in an open state after pressing the trigger once, and does not require the user to press the trigger for a long time to maintain the open state of the spray gun, thereby effectively avoiding the situation where the user presses the trigger for a long time, resulting in an unstable water spray state, and further avoiding the situation where the fingers used for pressing are strained, effectively ensuring the health of the user, and when the spray gun is damaged, only the damaged gun body or gun handle needs to be replaced, which effectively saves the replacement cost and can improve the convenience when processing the flow channel.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] The utility model discloses a spray gun, comprising a gun handle, a gun body arranged at the upper end of the gun handle and a nozzle arranged at the right end of the gun body, a quick connector is arranged at the lower end of the gun handle, a water spray channel intersecting with the nozzle is arranged in the gun body, a gun body shell matching with it is covered on the gun body, a trigger matching with it is hinged on the right side of the upper end of the gun handle, a gun handle shell matching with it is covered on the outer side of the gun handle, a movable notch matching with the trigger is arranged on the right side of the upper part of the gun handle shell, an upper water inlet channel intersecting with the water spray channel is arranged in the upper part of the gun handle; a lower water inlet channel intersecting with the quick connector is arranged in the lower part of the gun handle; a boss is arranged on the right side wall of the middle part of the gun handle, a card slot is arranged at the center of the right side wall of the boss; a card slot is arranged at the center of the bottom of the card slot There is a moving hole; an opening and closing hole is provided at the center of the bottom of the moving hole; the moving hole is connected with the lower water inlet channel through a lower water through hole; the opening and closing hole is connected with the upper water inlet channel through an upper water through hole; a sleeve matching it is provided in the slot; a pressing structure matching the trigger is provided in the sleeve; an opening and closing piece matching the pressing structure is provided on the right side of the moving hole; an opening and closing head matching the opening and closing hole is provided at the center of the left side wall of the opening and closing piece; a spring hole is provided at the center of the left side wall of the opening and closing head; a spring is provided between the bottom of the spring hole and the bottom of the opening and closing hole; a docking hole connected with the water spray channel is provided on the lower surface of the left end of the gun body, and the upper end of the gun handle is embedded in the docking hole.

[0008] A fixing plate is provided on the outer wall of the upper end of the gun handle; symmetrical connecting through holes are provided on the front and rear sides of the fixing plate; connecting seats corresponding to the positions of the connecting through holes are provided on the front and rear sides of the left end of the gun body; a connecting screw hole that penetrates the connecting through hole is provided on the lower surface of the connecting seat; a fastening screw passes upward through the connecting through hole and is screwed into the connecting screw hole, and the head of the fastening screw fits with the lower surface of the fixing plate; an annular sealing step is provided on the inner wall of the hole at the lower end of the docking hole; an upper sealing ring that is sleeved on the outer side of the upper end of the gun handle is provided on the sealing step.

[0009] The left end of the gun body is provided with a baffle; the left end of the gun body is embedded in the upper end of the gun handle shell, and the upper end surface of the gun handle shell is in contact with the lower surface of the baffle; the lower surface of the left part of the gun body shell is provided with a positioning hole that is connected with its internal space, and the gun handle shell passes through the positioning hole; the lower end surface of the gun handle shell is provided with an annular positioning step; the positioning step is provided with a positioning plate that matches it; the left and right sides of the lower end of the gun handle are provided with mutually symmetrical positioning seats; the lower surface of the positioning seat is provided with a positioning screw hole; the left and right sides of the positioning plate are provided with countersunk holes that are connected with the positioning screw holes; a positioning screw passes through the countersunk hole upward and is screwed into the positioning screw hole; the positioning plate is annular, and the edge of the hole at the lower end of the inner hole of the positioning plate extends inwardly to form an annular positioning portion; the upper outer wall of the quick connector is provided with an annular positioning portion, and the positioning portion is located between the lower end surface of the gun handle and the upper surface of the positioning portion; the quick connector jacket is provided with an annular pressure cover, and the upper surface of the pressure cover is in contact with the lower surface of the positioning plate.

[0010] The pressing structure includes a top block that fits with the center of the right side wall of the opening and closing member; the inner wall of the sleeve is provided with a plurality of guide grooves evenly distributed in a circle; the outer peripheral surface of the top block is provided with a plurality of inclined sliding blocks matching the guide grooves; a pressure rod matching it is provided in the sleeve, and the right end of the pressure rod extends to the right outside the sleeve and presses against the right inner wall of the lower part of the trigger; an annular limiting step is provided on the inner wall of the right end port of the sleeve; a plurality of triangular heads matching the guide grooves are provided on the outer peripheral surface of the left end of the pressure rod, and the right end surface of the triangular head fits with the limiting step; the right end surface of the inclined sliding block is provided with an inclined surface matching the triangular head.

[0011] The outer wall of the left end of the opening and closing head is provided with an introduction cone surface which is narrow on the left and wide on the right.

[0012] The outer circumference of the opening and closing member is provided with an annular right sealing groove; a right sealing ring matching it is arranged in the right sealing groove; the outer circumference of the opening and closing head is provided with an annular left sealing groove; a left sealing ring matching it is arranged in the left sealing groove.

[0013] An auxiliary hole coaxial with the spring hole is arranged at the center of the bottom of the opening and closing hole, and the left end of the spring is clamped in the auxiliary hole.

[0014] A plurality of limit blocks which fit with the inner wall of the gun handle housing are arranged on the left side of the lower surface of the trigger.

[0015] A limiting plate is provided on the upper and lower sides of the outer wall of the sleeve and is in contact with the right side wall of the boss; a clamping plate is provided on the right side wall of the gun handle and is distributed on the upper and lower sides of the boss; a claw is provided on the side of the right end of the clamping plate adjacent to the center of the boss; a limiting part is provided on the end of the limiting plate and is in contact with the left side wall of the claw.

[0016] The boss is provided with symmetrical positioning seats on the upper and lower sides; a positioning screw hole is provided on the right side wall of the positioning seat; a positioning through hole corresponding to the position of the positioning screw hole is provided on the limiting plate; a positioning screw passes through the positioning through hole and is screwed into the positioning screw hole, and the head of the positioning screw fits against the right side wall of the limiting plate.

[0017] The beneficial effects of the utility model are:

[0018] Compared with the prior art, the gun body and the gun handle of the spray gun adopting the structure of the utility model can be connected through the docking hole, and then the stability of the gun body and the gun handle after connection can be further improved by docking between the gun body shell and the gun handle shell. When the gun body and the gun handle are both independent, the upper water inlet flow channel and the lower water inlet flow channel are both on the gun handle, and the water spray flow channel is on the gun body. As different flow channels are distributed on the gun handle and the gun body respectively, it is only necessary to process the gun handle or the gun body separately to easily process the corresponding flow channels, avoiding the situation where a large number of flow channels are distributed on the one-piece spray gun, causing processing difficulties, effectively reducing the processing difficulty, and improving the processing accuracy. If the spray gun is partially damaged, it is only necessary to identify that the damage occurs on the gun body or the gun handle, and then replace the corresponding gun body or gun handle, without replacing the entire spray gun, effectively reducing the replacement cost.

[0019] Compared with the prior art, the spray gun adopting the structure of the utility model only needs to press the pressure rod to the left once through the trigger to move the opening and closing head to the left to close the opening and closing hole. Pressing the pressure rod to the left again can make it move right and reset to open the opening and closing hole. Pressing the pressure rod to the left for the third time will move the opening and closing head to the left again to close the opening and closing hole, thus forming a cycle, so that the opening and closing of the spray gun can be completed with only one pressing action, which is extremely simple. Each time it is opened and closed, before the next pressing action occurs, the opening and closing head can always be in the current position, and the opening and closing hole always maintains the current open state or closed state. During the entire opening or closing process, there is no need for the user to constantly apply pressure to the trigger, which effectively avoids the situation where the user presses the trigger for a long time, resulting in an unstable water spraying state, and further avoids the situation where the fingers used for pressing are strained, effectively ensuring the health of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of the spray gun of the utility model;

[0021] Figure 2 yes Figure 1 An enlarged view of part A;

[0022] Figure 3 yes Figure 1 An enlarged view of part B;

[0023] Figure 4 It is a structural schematic diagram of the utility model spray gun;

[0024] Figure 5 It is a schematic diagram of the structure of the gun handle;

[0025] Figure 6 It is a schematic diagram of the structure of the gun body;

[0026] Figure 7 It is a structural diagram of the card position board;

[0027] Figure 8 is a structural schematic diagram of a pressing structure;

[0028] Fig. 9 It is a schematic diagram of the structure of the sleeve;

[0029] Fig.10 It is a stereoscopic picture of the spray gun;

[0030] Fig.11 This is a cross-sectional view of the lower part of the gun handle. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0032] See also Figures 1 to 11 The utility model provides a spray gun, comprising a gun handle 1, a gun body 2 arranged at the upper end of the gun handle 1 and a nozzle 3 arranged at the right end of the gun body 2, a quick connector 4 is arranged at the lower end of the gun handle 1, a water spray channel 5 communicating with the nozzle 3 is arranged in the gun body 2, a gun body shell 6 matching therewith is covered on the outer surface of the gun body 2, a trigger 7 matching therewith is hingedly connected to the right side of the upper end of the gun handle 1, a gun handle shell 8 matching therewith is covered on the outer surface of the gun handle 1, and a movable notch 9 matching the trigger 7 is arranged on the upper right side of the gun handle shell 8, an upper water inlet channel 10 communicating with the water spray channel 5 is arranged in the upper part of the gun handle 1; a lower water inlet channel 11 communicating with the quick connector 4 is arranged in the lower part of the gun handle 1; a boss 12 is arranged on the right side wall of the middle part of the gun handle 1, a card slot 13 is arranged at the center of the right side wall of the boss 12; a movable hole 14 is arranged at the center of the bottom of the card slot 13 ; An opening and closing hole 15 is provided at the center of the bottom of the movable hole 14; the movable hole 14 is connected with the lower water inlet channel 11 through a lower water through hole 16; the opening and closing hole 15 is connected with the upper water inlet channel 10 through an upper water through hole 17; a sleeve 18 matching it is provided in the slot 13; a pressing structure matching the trigger 7 is provided in the sleeve 18; an opening and closing member 19 matching the pressing structure is provided on the right side of the movable hole 14; an opening and closing head 20 matching the opening and closing hole 15 is provided at the center of the left side wall of the opening and closing member 19; a spring hole 21 is provided at the center of the left side wall of the opening and closing head 20; a spring 22 is provided between the bottom of the spring hole 21 and the bottom of the opening and closing hole 15; a docking hole 23 connected with the water spray channel 5 is provided on the lower surface of the left end of the gun body 2, and the upper end of the gun handle 1 is embedded in the docking hole 23.

[0033] A fixing plate 24 is provided on the outer wall of the upper end of the gun handle 1; symmetrical connecting through holes 25 are provided on the front and rear sides of the fixing plate 24; connecting seats 26 corresponding to the positions of the connecting through holes 25 are provided on the front and rear sides of the left end of the gun body 2; a connecting screw hole 27 that penetrates the connecting through hole 25 is provided on the lower surface of the connecting seat 26; a fastening screw 28 passes through the connecting through hole 25 upwards and is screwed into the connecting screw hole 27, and the head of the fastening screw 28 fits with the lower surface of the fixing plate 24; an annular sealing step 29 is provided on the inner wall of the lower end of the docking hole 23; an upper sealing ring 30 that is sleeved on the outer side of the upper end of the gun handle 1 is provided on the sealing step 29.

[0034] The left end of the gun body 2 is provided with a baffle 31; the left end of the gun body 2 is embedded in the upper end of the gun handle shell 8, and the upper end surface of the gun handle shell 8 is in contact with the lower surface of the baffle 31; the lower surface of the left part of the gun body shell 6 is provided with a locking hole 32 that is connected with its internal space, and the gun handle shell 8 passes through the locking hole 32; the lower end surface of the gun handle shell 8 is provided with an annular locking step 33; the locking step 33 is provided with a locking plate 34 that matches it; the left and right sides of the lower end of the gun handle 1 are provided with mutually symmetrical locking seats 35; the lower surface of the locking seat 35 is provided with a locking screw hole 36 The left and right sides of the locking plate 34 are provided with countersunk holes 37 that are connected with the locking screw holes 36; a locking screw 38 passes through the countersunk hole 37 upward and is screwed into the locking screw hole 36; the locking plate 34 is annular, and an annular positioning portion 61 extends inward from the edge of the lower end of the hole in the inner hole of the locking plate 34; the upper outer wall of the quick connector 4 is provided with an annular locking portion 62, and the locking portion 62 is located between the lower end surface of the gun handle 1 and the upper surface of the positioning portion 61; the quick connector 4 is covered with an annular pressure cover 63, and the upper surface of the pressure cover 63 is in contact with the lower surface of the locking plate 34.

[0035] The pressing structure includes a top block 39 that fits with the center of the right side wall of the opening and closing member 19; the inner wall of the sleeve 18 is provided with a plurality of guide grooves 40 that are evenly distributed around the circumference; the outer circumferential surface of the top block 39 is provided with a plurality of inclined sliding blocks 41 that match the guide grooves 40; a pressure rod 42 that matches it is provided inside the sleeve 18, and the right end of the pressure rod 42 extends to the right outside the sleeve 18 and presses against the right inner wall of the lower part of the trigger 7; an annular limiting step 43 is provided on the inner wall of the right end port of the sleeve 18; a plurality of triangular heads 44 that match the guide grooves 40 are provided on the outer circumferential surface of the left end of the pressure rod 42, and the right end surface of the triangular head 44 fits with the limiting step 43; the right end surface of the inclined sliding block 41 is provided with an inclined surface 45 that matches the triangular head 44.

[0036] The outer wall of the left end of the opening and closing head 20 is provided with an introduction cone surface 46 which is narrow on the left and wide on the right.

[0037] The outer circumference of the opening and closing member 19 is provided with an annular right sealing groove 47; a right sealing ring 48 matching therewith is arranged in the right sealing groove 47; the outer circumference of the opening and closing head 20 is provided with an annular left sealing groove 49; a left sealing ring 50 matching therewith is arranged in the left sealing groove 49.

[0038] An auxiliary hole 51 coaxial with the spring hole 21 is provided at the center of the bottom of the opening and closing hole 15 , and the left end of the spring 22 is clamped in the auxiliary hole 51 .

[0039] A plurality of limit blocks 52 are provided on the left side of the lower surface of the trigger 7 and are fitted with the inner wall of the gun handle housing 8 .

[0040] A limit plate 53 is provided on the upper and lower sides of the outer wall of the sleeve 18, which is in contact with the right side wall of the boss 12; a clamping plate 54 is provided on the right side wall of the gun handle 1, which is distributed on the upper and lower sides of the boss 12; a claw 55 is provided on the right end of the clamping plate 54, which is adjacent to the center of the boss 12; a limit portion 56 is provided on the end of the limit plate 53, which is in contact with the left side wall of the claw 55.

[0041] The boss 12 is provided with symmetrical positioning seats 57 on the upper and lower sides; the right side wall of the positioning seat 57 is provided with a positioning screw hole 58; the limiting plate 53 is provided with a positioning through hole 59 corresponding to the position of the positioning screw hole 58; a positioning screw 60 passes through the positioning through hole 59 and is screwed into the positioning screw hole 58, and the head of the positioning screw 60 is in contact with the right side wall of the limiting plate 53.

[0042] The method of using the utility model is as follows:

[0043] The quick connector 4 can be used to connect the hose. At this time, the opening and closing head 20 is in the moving hole 14 under the elastic action of the spring 22, and the opening and closing hole 15 is in an open state. As the water source enters the quick connector 4 along the hose under the action of pressure, it will enter the lower water inlet channel 11 as soon as possible, and the water flow entering the lower water inlet channel 11 will enter the gap between the outer peripheral surface of the opening and closing head 20 and the inner wall of the moving hole 14 through the lower water through hole 16, and then enter the opening and closing hole 15, and then enter the upper water inlet channel 10 through the upper water through hole 17, and the upper water inlet channel 10 is connected with the water spray channel 5. Finally, the water flows through the water spray channel 5 to the nozzle, and is sprayed out through the nozzle 3 to form an atomized water flow or a high-pressure water column for use. As long as the user does not press the trigger 7, the opening and closing hole 15 is always in an open state, and the user does not need to press the trigger 7 for a long time to maintain the opening and closing hole 15. The convenience is effectively improved.

[0044] When the spray gun needs to be closed, the opening and closing head 20 only needs to enter the opening and closing hole 15 to block the opening and closing hole 15. At this time, the trigger 7 can be pressed by a finger to make the trigger 7 swing to the left with the hinge point at its upper end as the center, and the inner wall on the right side of the lower part of the trigger 7 will squeeze the pressure rod 42 to the left. As the pressure rod 42 moves to the left, the triangular head 44 moves to the left along the trajectory of the guide groove 40 at the same time, and squeezes the inclined surface 45 at the right end of the inclined slide block 41. In the actual design, each guide groove 40 will There is a corresponding inclined guide surface to transitionally connect the left ends of adjacent guide grooves 40 together, and the adjacent guide grooves 40 can be divided into complete guide grooves and incomplete guide grooves. When the triangular head 44 at the left end of the pressure rod 42 pushes the inclined slide block 41 to the left of the complete guide groove, the spring 22 will apply its own elasticity to the top block 39 through the opening and closing member. Under the guiding action of the inclined surface 45 at the right end of the inclined slide block 41, the top block 39 will rotate, and the inclined slide block 41 will move along the space between the complete guide groove and the incomplete guide groove. The guide surface slides into the incomplete guide groove, and the distance between the card edge in the incomplete guide groove and the bottom of the opening and closing hole 15 is smaller than the distance between the card edge in the complete guide groove and the bottom of the opening and closing hole 15. As the inclined slider 41 is inserted into the card edge of the incomplete guide groove, the top block 39 can ensure its stability after moving left under the elastic action of the spring 22 and the restriction of the card edge of the incomplete guide groove. This method of moving left and automatically fixing after pressing once is consistent with the pressing principle of a ballpoint pen. When the top block 3 After the trigger 9 moves to the left, the top block 39 pushes the opening and closing member 19 to the left. At this time, the opening and closing head 20 moves to the left synchronously and enters into the opening and closing hole 15 to block the opening and closing hole 15. The lower water inlet channel 11 can no longer communicate with the upper water inlet channel 10 through the opening and closing hole 15. As the opening and closing head 20 is automatically fixed after moving to the left, even if the user releases the trigger 7 and loses the external force, the opening and closing head 20 is still in the opening and closing hole 15 to block and seal the opening and closing hole 15, thereby always maintaining the closed state of the spray gun.

[0045] In summary, it can be known that the utility model only needs to press the pressure rod 42 to the left once through the trigger 7 to move the opening and closing head 20 to the left to close the opening and closing hole 15. Pressing the pressure rod 42 to the left again can make it move right and reset to open the opening and closing hole 15. Pressing the pressure rod 42 to the left for the third time will cause the opening and closing head 20 to move to the left again to close the opening and closing hole 15. This forms a cycle, so that the opening and closing of the spray gun can be completed with only one pressing action, which is extremely simple. Each time it is opened and closed, before the next pressing action occurs, the opening and closing head 20 can always be in the current position, and the opening and closing hole 15 always maintains the current open state or closed state. During the entire opening or closing process, there is no need for the user to constantly apply pressure to the trigger, which effectively avoids the situation where the user presses the trigger 7 for a long time, resulting in an unstable water spraying state, and further avoids the situation where the fingers used for pressing are strained, effectively ensuring the health of the user.

[0046] The gun body 2 and the gun handle 1 can be connected through the docking hole 23, and then the stability of the gun body 2 and the gun handle 1 after connection can be further improved by docking between the gun body shell 6 and the gun handle shell 8. When the gun body 2 and the gun handle 1 are both independent, the upper water inlet channel 10 and the lower water inlet channel 11 are both on the gun handle 1, and the water spray channel 5 is on the gun body 2. As different flow channels are distributed on the gun handle 1 and the gun body 2 respectively, it is only necessary to process the gun handle 1 or the gun body 2 separately to easily process the corresponding flow channels, avoiding the situation where a large number of flow channels are distributed on the one-piece spray gun, causing processing difficulties, effectively reducing the processing difficulty, and improving the processing accuracy. If the spray gun is partially damaged, it is only necessary to identify that this part of the damage occurs on the gun body 2 or the gun handle 1, and then replace the corresponding gun body 2 or the gun handle 1, without replacing the entire spray gun, effectively reducing the replacement cost.

[0047] A fixing plate 24 is provided on the outer wall of the upper end of the gun handle 1, and symmetrical connecting through holes 25 are provided on the front and rear sides of the fixing plate 24. Connecting seats 26 corresponding to the positions of the connecting through holes 25 are provided on the front and rear sides of the left end of the gun body 2. A connecting screw hole 27 that penetrates the connecting through hole 25 is provided on the lower surface of the connecting seat 26. A fastening screw 28 passes through the connecting through hole 25 upward and is screwed into the connecting screw hole 27. The head of the fastening screw 28 fits with the lower surface of the fixing plate 24. This fixing method can not only ensure the stability when the upper end of the gun handle 1 is connected to the left end of the gun body 2, but also facilitates the disassembly and assembly between the gun handle 1 and the gun body 2. An annular sealing step 29 is provided on the inner wall of the hole opening at the lower end of the docking hole 23. An upper sealing ring 30 is provided on the sealing step 29 and is sleeved on the outer side of the upper end of the gun handle 1. The existence of the upper sealing ring 30 can effectively ensure the sealing after the upper end of the gun handle 1 is inserted into the docking hole 23, thereby achieving a water-proof effect.

[0048] A baffle 31 is provided at the left end of the gun body 2, and the left end of the gun body 2 is embedded in the upper end of the gun handle shell 8. The upper end surface of the gun handle shell 8 fits with the lower surface of the baffle 31. A locking hole 32 is provided on the lower surface of the left part of the gun body shell 6, which is connected with its internal space. The gun handle shell 8 passes through the locking hole 32. After the left end of the gun body 2 is fixedly connected to the upper end of the gun handle 1, the gun body 2 can limit the up and down movement of the gun body shell 6 by itself. When the upper end of the gun handle shell 8 is stuck in the locking hole 32, the gun handle shell 8 can limit the left and right movement of the gun body shell 6, thereby effectively ensuring the stability of the gun body shell 6. The lower end surface of the gun handle shell 8 is provided with an annular locking platform Step 33, a locking plate 34 matching with it is provided on the locking step 33, and mutually symmetrical locking seats 35 are provided on the left and right sides of the lower end of the gun handle 1, and a locking screw hole 36 is provided on the lower surface of the locking seat 35. Countersunk holes 37 that penetrate the locking screw holes 36 are provided on the left and right sides of the locking plate 34. A locking screw 38 passes through the countersunk hole 37 upward and is screwed into the locking screw hole 36. This fixing method can limit the upward movement of the gun handle shell 8 through the baffle 31, and the stability of the gun handle shell 8 is further guaranteed by the locking screw 38, and finally effectively ensure the stability of the gun handle shell 8 when it is covered on the outside of the gun handle 1 and the stability of the gun body shell 6 when it is covered on the outside of the gun body 2.

[0049] The locking plate 34 is annular, and an annular positioning portion 61 extends inwardly from the edge of the lower end hole of the inner hole of the locking plate 34. The upper outer wall of the quick connector 4 is provided with an annular locking portion 62, and the locking portion 62 is located between the lower end surface of the gun handle 1 and the upper surface of the positioning portion 61. The quick connector 4 is covered with an annular pressure cover 63, and the upper surface of the pressure cover 63 is in contact with the lower surface of the locking plate 34. This fixing method is conducive to the disassembly of the quick connector 4 and is convenient for the replacement of the quick connector 4. When the quick connector 4 needs to be disassembled, it is only necessary to unscrew the locking screw 38 from the locking screw hole 36, and the locking portion 62 outside the quick connector 4 is no longer restricted. At this time, the quick connector 4 can be easily pulled out from the lower end port of the lower water inlet channel 11 to realize the disassembly of the quick connector 4. At the same time, the existence of the pressure cover 63 can cover the lower surface of the locking plate 34, effectively hide the existence of the countersunk hole 37 and the locking screw 38, and effectively improve the aesthetics.

[0050] The outer wall of the left end of the opening and closing head 20 is provided with an introduction cone 46 which is narrow on the left and wide on the right. The existence of the introduction cone 46 facilitates the opening and closing head 20 to be quickly inserted into the opening and closing hole 15 to block and close the opening and closing hole 15 when it moves to the left.

[0051] An annular right sealing groove 47 is provided on the outer circumference of the opening and closing member 19, and a right sealing ring 48 matching therewith is provided in the right sealing groove 47; an annular left sealing groove 49 is provided on the outer circumference of the opening and closing head 20, and a left sealing ring 50 matching therewith is provided in the left sealing groove 49; the existence of the right sealing ring 48 can effectively ensure the sealing between the outer circumference of the opening and closing member 19 and the inner wall of the moving hole 14; the existence of the left sealing ring 50 can effectively ensure the sealing when the opening and closing head 20 moves to the left into the opening and closing hole 15 to block and seal the opening and closing hole 15.

[0052] An auxiliary hole 51 coaxial with the spring hole 21 is provided at the center of the bottom of the opening and closing hole 15. The left end of the spring 22 is stuck in the auxiliary hole 51. The existence of the auxiliary hole 51 can ensure the stability of the left end of the spring 22, and the existence of the spring hole 21 can ensure the stability of the right end of the spring 22. When both the left and right ends of the spring 22 are stabilized, the stability of the spring 22 when being compressed and opened can be effectively guaranteed.

[0053] A plurality of limit blocks 52 are provided on the left side of the lower surface of the trigger 7 , which are in contact with the inner wall of the gun handle housing 8 . The limit blocks 52 can limit the movement of the trigger 7 when it is reset to the right, thereby positioning the trigger 7 .

[0054] A limit plate 53 is provided on the upper and lower sides of the outer wall of the sleeve 18 and is in contact with the right side wall of the boss 12. A clamping plate 54 is provided on the right side wall of the gun handle 1 and is distributed on the upper and lower sides of the boss 12. A claw 55 is provided on the right end of the clamping plate 54 adjacent to the center of the boss 12. A limit portion 56 is provided on the end of the limit plate 53 and is in contact with the left side wall of the claw 55. This clamping method can realize the rapid assembly of the sleeve 18.

[0055] The boss 12 is provided with symmetrical positioning seats 57 on the upper and lower sides, and a positioning screw hole 58 is provided on the right side wall of the positioning seat 57. A positioning through hole 59 corresponding to the position of the positioning screw hole 58 is provided on the limiting plate 53. A positioning screw 60 passes through the positioning through hole 59 and is screwed into the positioning screw hole 58. The head of the positioning screw 60 is in contact with the right side wall of the limiting plate 53. This fixing method can ensure the stability of the sleeve 18 after the sleeve 18 is quickly assembled, and is beneficial to the later disassembly of the sleeve 18, and is convenient for the maintenance and replacement of other components.

Claims

1. A spray gun, comprising a gun handle, a gun body arranged at the upper end of the gun handle, and a nozzle arranged at the right end of the gun body, a quick connector is arranged at the lower end of the gun handle, a water spray channel intersecting with the nozzle is arranged in the gun body, a gun body shell matching with it is covered on the gun body, a trigger matching with it is hinged on the right side of the upper end of the gun handle, a gun handle shell matching with it is covered on the gun handle, and a movable notch matching with the trigger is arranged on the right side of the upper part of the gun handle shell, characterized in that: An upper water inlet channel interlinked with the water spray channel is provided in the upper part of the gun handle; a lower water inlet channel interlinked with the quick connector is provided in the lower part of the gun handle; a boss is provided on the right side wall of the middle part of the gun handle, and a card slot is provided at the center of the right side wall of the boss; a moving hole is provided at the center of the bottom of the card slot; an opening and closing hole is provided at the center of the bottom of the moving hole; the moving hole is connected with the lower water inlet channel through a lower water through hole; the opening and closing hole is connected with the upper water inlet channel through an upper water through hole; the card slot A sleeve matching it is provided in the groove; a pressing structure matching the trigger is provided in the sleeve; an opening and closing piece matching the pressing structure is provided on the right side of the moving hole; an opening and closing head matching the opening and closing hole is provided at the center of the left side wall of the opening and closing piece; a spring hole is provided at the center of the left side wall of the opening and closing head; a spring is provided between the bottom of the spring hole and the bottom of the opening and closing hole; a docking hole communicating with the water spray channel is provided on the lower surface of the left end of the gun body, and the upper end of the gun handle is embedded in the docking hole.

2. A spray gun according to claim 1, characterized in that: A fixing plate is provided on the outer wall of the upper end of the gun handle; symmetrical connecting through holes are provided on the front and rear sides of the fixing plate; connecting seats corresponding to the positions of the connecting through holes are provided on the front and rear sides of the left end of the gun body; a connecting screw hole that penetrates the connecting through hole is provided on the lower surface of the connecting seat; a fastening screw passes upward through the connecting through hole and is screwed into the connecting screw hole, and the head of the fastening screw fits with the lower surface of the fixing plate; an annular sealing step is provided on the inner wall of the hole at the lower end of the docking hole; an upper sealing ring that is sleeved on the outer side of the upper end of the gun handle is provided on the sealing step.

3. A spray gun according to claim 1, characterized in that: The left end of the gun body is provided with a baffle; the left end of the gun body is embedded in the upper end of the gun handle shell, and the upper end surface of the gun handle shell is in contact with the lower surface of the baffle; the lower surface of the left part of the gun body shell is provided with a positioning hole that is connected with its internal space, and the gun handle shell passes through the positioning hole; the lower end surface of the gun handle shell is provided with an annular positioning step; the positioning step is provided with a positioning plate that matches it; the left and right sides of the lower end of the gun handle are provided with mutually symmetrical positioning seats; the lower surface of the positioning seat is provided with a positioning screw hole; the left and right sides of the positioning plate are provided with countersunk holes that are connected with the positioning screw holes; a positioning screw passes through the countersunk hole upward and is screwed into the positioning screw hole; the positioning plate is annular, and the edge of the hole at the lower end of the inner hole of the positioning plate extends inwardly to form an annular positioning portion; the upper outer wall of the quick connector is provided with an annular positioning portion, and the positioning portion is located between the lower end surface of the gun handle and the upper surface of the positioning portion; the quick connector jacket is provided with an annular pressure cover, and the upper surface of the pressure cover is in contact with the lower surface of the positioning plate.

4. A spray gun according to claim 1, characterized in that: The pressing structure includes a top block that fits with the center of the right side wall of the opening and closing member; the inner wall of the sleeve is provided with a plurality of guide grooves evenly distributed in a circle; the outer peripheral surface of the top block is provided with a plurality of inclined sliding blocks matching the guide grooves; a pressure rod matching it is provided in the sleeve, and the right end of the pressure rod extends to the right outside the sleeve and presses against the right inner wall of the lower part of the trigger; an annular limiting step is provided on the inner wall of the right end port of the sleeve; a plurality of triangular heads matching the guide grooves are provided on the outer peripheral surface of the left end of the pressure rod, and the right end surface of the triangular head fits with the limiting step; the right end surface of the inclined sliding block is provided with an inclined surface matching the triangular head.

5. A spray gun according to claim 1, characterized in that: The outer wall of the left end of the opening and closing head is provided with an introduction cone surface which is narrow on the left and wide on the right.

6. A spray gun according to claim 1, characterized in that: The outer circumference of the opening and closing member is provided with an annular right sealing groove; a right sealing ring matching it is arranged in the right sealing groove; the outer circumference of the opening and closing head is provided with an annular left sealing groove; a left sealing ring matching it is arranged in the left sealing groove.

7. A spray gun according to claim 1, characterized in that: An auxiliary hole coaxial with the spring hole is arranged at the center of the bottom of the opening and closing hole, and the left end of the spring is clamped in the auxiliary hole.

8. A spray gun according to claim 1, characterized in that: A plurality of limit blocks which fit with the inner wall of the gun handle housing are arranged on the left side of the lower surface of the trigger.

9. A spray gun according to claim 1, characterized in that: A limiting plate is provided on the upper and lower sides of the outer wall of the sleeve and is in contact with the right side wall of the boss; a clamping plate is provided on the right side wall of the gun handle and is distributed on the upper and lower sides of the boss; a claw is provided on the side of the right end of the clamping plate adjacent to the center of the boss; a limiting part is provided on the end of the limiting plate and is in contact with the left side wall of the claw.

10. A spray gun according to claim 9, characterized in that: The boss is provided with symmetrical positioning seats on the upper and lower sides; a positioning screw hole is provided on the right side wall of the positioning seat; a positioning through hole corresponding to the position of the positioning screw hole is provided on the limiting plate; a positioning screw passes through the positioning through hole and is screwed into the positioning screw hole, and the head of the positioning screw fits against the right side wall of the limiting plate.

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