A spray gun

Abstract

The application discloses a spray gun, which comprises a shell, a switching assembly and a body, the switching assembly is arranged in the shell, a cavity of the body is provided with an elastic sealing piece, the elastic sealing piece is provided with a water inlet hole and a water outlet hole, the elastic sealing piece cooperates with the body to block or communicate a water outlet waterway, and the elastic sealing piece divides the cavity into an upper cavity and a lower cavity; the switching assembly comprises a piston part, the piston part can be switched between a first position and a second position of the upper cavity, when the piston part is in the first position, the piston part is in sealing cooperation with the water outlet hole, and when the piston part is in the second position, the piston part is separated from the water outlet hole. The force value of the switch assembly of the spray gun of the application is not affected by water pressure, and the same pressing force value can be kept under the conditions of no load and any water pressure, thereby meeting the needs of various pressure values of users and improving the user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to a spray gun. BACKGROUND

[0002] At present, the keys of the spray gun on the market are affected by water pressure. When the water pressure increases, the pressing value of the key opening also increases. Especially, the pressure value is large at high pressure. In addition, the spray gun needs to be pressed for a long time during use. Therefore, the user operation is very inconvenient. SUMMARY

[0003] In order to solve the above technical problems, the purpose of the present application is to provide a spray gun.

[0004] The present application is realized by the following technical scheme: a spray gun, comprising a shell, a switching assembly and a body, the switching assembly is arranged in the shell, an elastic sealing element is arranged in the cavity of the body, the elastic sealing element is provided with a water inlet hole and a water outlet hole, the elastic sealing element cooperates with the body to block or communicate the water outlet waterway, and the elastic sealing element divides the cavity into an upper cavity and a lower cavity; the switching assembly comprises a piston part, the piston part can be switched between a first position and a second position of the upper cavity, when the piston part is in the first position, the piston part is in sealing cooperation with the water outlet hole; when the piston part is in the second position, the piston part is separated from the water outlet hole.

[0005] Preferably, when the piston part is in the first position, one end of the piston part is in sealing cooperation with the upper end of the upper cavity to form a first sealing position, and the other end is in sealing cooperation with the water outlet hole to form a second sealing position, wherein the cross-sectional areas of the first sealing position and the second sealing position are equal or the cross-sectional area difference between the first sealing position and the second sealing position is less than 30mm 2 .

[0006] Preferably, when the piston part is in the first position, the pressure bearing area of the upper cavity is greater than that of the lower cavity; when the piston part is in the second position, the pressure bearing area of the upper cavity is less than that of the lower cavity.

[0007] Preferably, the water inlet hole and the water outlet hole are respectively located at the side and the middle of the elastic sealing element.

[0008] Preferably, the switching assembly comprises a switching shaft and a return spring, the return spring is sleeved on the switching shaft, one end of the switching assembly is connected with a switch assembly, and the other end is in cooperation with the elastic sealing element.

[0009] Preferably, the switching shaft comprises a main body part and the piston part, the main body part is connected with the switch assembly to realize the axial movement of the switching shaft.

[0010] Preferably, the cavity of the body has a matching part, which cooperates with the elastic sealing member to open or close the water outlet.

[0011] Preferably, the elastic sealing member comprises a connecting part and a deformed part, the connecting part is connected with the body and fixed by a pressing cap, and the elastic sealing member and the pressing cap form the upper cavity.

[0012] Preferably, a sealing ring is arranged between the pressing cap and the piston part.

[0013] Preferably, a spring is further included, wherein a groove is formed between the middle part and the peripheral side of the deformed part, one end of the spring abuts against the groove, and the other end cooperates with the pressing cap.

[0014] The switch assembly of the spray gun of the present application can keep the same pressing force value under no load and any water pressure, thereby meeting the needs of users for various pressure values, keeping the best hand feeling under any water pressure, easily pressing, reducing the pressure value, and improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0016] Figure 1 is a perspective view of the present application.

[0017] Figure 2 is a sectional view of the present application.

[0018] Figure 3 is an exploded view of the present application.

[0019] Figure 4 is a schematic view of the switch assembly of the present application in a closed state.

[0020] Figure 5A is a schematic view of the water path of the switch assembly of the present application in an open state.

[0021] Figure 5B is a schematic view of the water path of the switch assembly of the present application in an open state. DETAILED DESCRIPTION

[0022] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0023] The accompanying drawings are referred to in the description of the application Figure 1 The accompanying drawings are referred to in the description of the application Figures 5A-5B A spray gun comprises a housing 1, a switching assembly 2 and a body 3, the switching assembly 2 is arranged in the housing 1, one end of the housing 1 is connected with a face cover assembly 10, and the other end is connected with the body 3; the body 3 is provided with an elastic sealing member 30 arranged in the body 3, the elastic sealing member 30 divides the cavity in the body 3 into an upper cavity 31 and a lower cavity 32, wherein the elastic sealing member 30 is provided with a water outlet hole 30a and a water inlet hole 30b, preferably, the water inlet hole 30b and the water outlet hole 30a are respectively located at the side and the middle of the elastic sealing member; specifically, the elastic sealing member 30 comprises a connecting part 301 and a deformed part 302, the cavity of the body 3 is provided with a cooperating part 3a cooperating with the deformed part 302 to open or close the water outlet waterway, wherein the connecting part 301 is connected and fixed with the engaging part 3c in the body 3, and the elastic sealing member 30 is connected in the cavity of the body 3 by using a pressure cap 4, and then the pressure cap 4 and the elastic sealing member 30 form the upper cavity 31, the deformed part 302 can cooperate with the cooperating part 3a of the body to open or close the water outlet waterway h, the water outlet hole 30a and the water inlet hole 30b are respectively arranged at the middle and the periphery of the deformed part 302, preferably, a groove d is formed between the middle and the periphery of the deformed part, the groove d can accommodate a spring P, one end of the spring P abuts against the groove d, and the other end cooperates with the pressure cap 4.

[0024] The switching assembly 2 includes a switching shaft 21 and a reset spring 22, one end of the switching assembly 2 is connected with the switch assembly 5, and the other end extends into the pressure cap 4 and is matched with the water outlet hole 30a, the pressure cap 4 is provided with a through hole 4a, and the through hole and the water outlet hole are located at the upper and lower ends of the upper cavity respectively; wherein the switching shaft 21 includes a main body part 21a and a piston part 21b, the reset spring 22 is sleeved on the main body part 21a, the cross-sectional area of the main body part is larger than that of the piston part, the main body part 21a is located in the containing groove 41 of the pressure cap 4 and is limited and matched with the containing groove 41, and the piston part 21b continues to pass through the pressure cap 4 and is matched with the water outlet hole 30a of the elastic sealing piece to open or close the water path of the water outlet hole. Preferably, a sealing ring k is arranged between the pressure cap 4 and the piston part 21b, that is, the upper end of the piston part 21b is sealingly matched with the through hole 4a of the pressure cap to form a first sealing position, and the lower end of the piston part is sealingly matched with the water outlet hole 30a to form a second sealing position, so as to ensure the sealing of each water path; wherein the cross-sectional areas of the first sealing position and the second sealing position are equal or the cross-sectional area difference between the first sealing position and the second sealing position is less than 30mm 2 Therefore, when the switching shaft moves in the axial direction, the pressing force value of the switch assembly is not affected by the water pressure, a relatively stable pressing force value can be maintained, and the user experience is improved.

[0025] The working process of the spray gun will be described below with reference to the accompanying drawings. Figure 4 and the accompanying Figures 5A-5B The working process of the spray gun will be described below with reference to the accompanying drawings. Figure 4 When the switch assembly 5 is in the closed state (the piston part is located at the first position in the upper cavity), at this time, the switching shaft 21 blocks the water outlet hole 30a, and the water outlet water path is in the closed state, at the same time, the water flows into the upper cavity 31 from the water inlet hole 30b, so that the pressure bearing area of the upper cavity 31 is larger than that of the lower cavity 32, at this time, the deformed part 302 of the elastic sealing piece is tightly attached to the matched part 3a in the body cavity under the action of the pressure difference, so as to be sealed and blocked between each other to block the water outlet water path; refer to Figures 5A-5BWhen the user switches the switch assembly 5, that is, when the switch assembly 5 is in the open state (the piston part is at the second position in the upper cavity), the switching shaft 21 moves upward, the sealing of the switching shaft 21 and the water outlet hole 30a is released, the water outlet hole 30a is water, at this time, the pressure bearing area of the upper cavity 31 is smaller than that of the lower cavity 32, the deformed part 302 of the elastic sealing member is pushed upward and deformed, so that the sealing between the deformed part 302 and the matching part 3a is released, the water outlet waterway h is communicated, and the water flows to the face cover assembly 10 for the user to use. Since the switching shaft of the spray gun of the present application moves, the upper and lower sealing surfaces are the same size, so the pressing force value of the switch assembly is not affected by the water pressure, and a relatively stable pressing force value can be maintained; in this way, the pressing force value of the switch assembly of the spray gun of the present application is not affected by the water pressure, and the same pressing force value can be maintained under no load and any water pressure, thereby meeting the needs of users for various pressure values, maintaining the best hand feeling under any water pressure, and also achieving easy pressing, reducing the pressure value, and improving the user experience effect.

[0026] The above description shows and describes the preferred embodiments of the present application, as previously described, it should be understood that the present application is not limited to the forms disclosed herein, should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the inventive concept described herein, by the above teaching or related technical or knowledge. The modifications and changes made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the scope of the appended claims of the present application.

Claims

1. A spray gun characterized in that, The utility model provides a water faucet, which comprises a housing, a switching assembly arranged in the housing, and a body, a cavity of the body is provided with an elastic sealing element, the elastic sealing element is provided with a water inlet hole and a water outlet hole, the elastic sealing element cooperates with the body to block or communicate a water outlet waterway, and the elastic sealing element divides the cavity into an upper cavity and a lower cavity; the switching assembly comprises a piston part, the piston part can be switched between a first position and a second position of the upper cavity, the piston part is in sealing cooperation with the water outlet hole when the piston part is in the first position, and the piston part is separated from the water outlet hole when the piston part is in the second position. When the piston part is in the first position, one end of the piston part is in sealing fit with the upper end of the upper cavity to form a first sealing position, and the other end is in sealing fit with the water outlet hole to form a second sealing position, wherein the cross-sectional area of the first sealing position is equal to the cross-sectional area of the second sealing position, or the cross-sectional area difference between the first sealing position and the second sealing position is less than 30mm 2 .

2. A lance according to claim 1, characterized in that The pressure-bearing area of the upper cavity is greater than that of the lower cavity when the piston part is in the first position, and the pressure-bearing area of the upper cavity is smaller than that of the lower cavity when the piston part is in the second position.

3. A lance according to claim 1, characterized in that The water inlet hole and the water outlet hole are respectively located at the side and the middle of the elastic sealing element.

4. A lance according to claim 1, characterized in that The switching assembly comprises a switching shaft and a return spring, the return spring is sleeved on the switching shaft, one end of the switching assembly is connected with a switch assembly, and the other end is in cooperation with the elastic sealing element.

5. A lance according to claim 4, characterized in that The switching shaft comprises a main body part and the piston part, the main body part is connected with the switch assembly to realize axial movement of the switching shaft.

6. A lance according to claim 1, characterized in that The cavity of the body is provided with a matching part, the matching part cooperates with the elastic sealing element to open or close the water outlet waterway.

7. A lance according to claim 1, characterized in that The elastic sealing element comprises a connecting part and a deformation part, the connecting part is connected with the body and is fixed by a pressing cap, and the elastic sealing element and the pressing cap form the upper cavity.

8. A lance according to claim 7, characterized in that A sealing ring is arranged between the pressing cap and the piston part.

9. A lance according to claim 7, characterized in that The utility model further comprises a spring, a groove is formed between the middle part and the circumferential side of the deformation part, one end of the spring abuts against the groove, and the other end cooperates with the pressing cap.

Images