High-pressure water gun with self-locking function

Abstract

The utility model relates to the technical field of high-pressure guns, in particular to a high-pressure water gun with a self-locking function, which comprises a valve mechanism, the valve mechanism comprises a gun valve sleeve, a valve component, a cam and an ejector rod sleeve, the gun valve sleeve comprises a valve body and a hinge body, the valve body is provided with a water inlet, a water outlet and a valve hole, the valve component is arranged in the valve body, and the valve component is arranged in the valve body. The valve assembly can penetrate through the valve hole to be exposed out of the valve body, the cam is provided with a first hinge point and a second hinge point, the first hinge point is connected with the hinge body in a relatively rotating mode through a first fastener, the ejector rod sleeve is fixedly connected with the valve assembly exposed out of the valve body, and the ejector rod sleeve is attached to the surface of the cam. And the cam is self-locked after the communication of the water inlet and the water outlet on the valve body is completely opened. The device solves the technical problems that when a high-pressure water gun is used for operation, an operator needs to exert gripping force on a triggering mechanism for a long time, and the hand is very prone to fatigue after long-time gripping.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure gun technology, specifically to a high-pressure water gun with a self-locking function. Background Technology

[0002] High-pressure water guns are widely used in various fields, including fire fighting, food processing, livestock sanitation, industrial dust removal, street cleaning, vehicle washing, and household appliance cleaning. The high-pressure water gun is a key component in environmental cleaning operations. The high-pressure water jets remove and wash away dirt, effectively cleaning surfaces. Traditional high-pressure water guns utilize a lever-torque amplification principle to open the push rod. Water is released when the gripping force of the trigger mechanism exceeds the combined force of the inlet water pressure and the valve spring. After the inlet and outlet channels on the valve body are fully opened in the valve mechanism, although the resistance of the triggering mechanism will be significantly reduced, the valve mechanism tends to close the connection between the inlet and outlet channels under the action of the inlet water pressure and the spring force of the valve. This causes the connection point between the triggering mechanism and the valve mechanism to be stressed, thus causing the triggering mechanism to tend to reset. However, in order to ensure that the high-pressure water gun can continuously and normally output water, the operator needs to apply grip force to the triggering mechanism for a long time. In addition, since the inlet water pressure may fluctuate, the operator's hand is very prone to fatigue after holding the device for a long time under the action of alternating force. In summary, it is essential to design a high-pressure gun device that is not affected by the inlet water pressure when using a high-pressure water gun. Utility Model Content

[0003] The purpose of this utility model is to provide a high-pressure water gun with a self-locking function, which solves the technical problem that when using a high-pressure water gun, the operator needs to apply grip force to the triggering mechanism for a long time. In addition, due to the possible fluctuation of water pressure at the inlet, the operator's hand is easily fatigued after holding it for a long time under the action of alternating force.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] This utility model provides a high-pressure water gun with a self-locking function, including a valve mechanism. The valve mechanism includes a gun valve sleeve, a valve assembly, a cam, and a push rod sleeve. The gun valve sleeve includes a valve body and a hinge body. The valve body is provided with an inlet, an outlet, and a valve hole. The valve assembly is disposed in the valve body and can pass through the valve hole to be exposed outside the valve body. The cam is provided with a first hinge point and a second hinge point. The first hinge point is rotatably connected to the hinge body by a first fastener. The push rod sleeve is fixedly connected to the valve assembly exposed outside the valve body. The push rod sleeve fits against the surface of the cam. After the connection between the inlet and outlet channels on the valve body is fully opened, the cam self-locks.

[0006] Furthermore, the cam is elliptical or approximately elliptical, with the first hinge point and the second hinge point on the long axis of the cam, and the cam can rotate around the first hinge point.

[0007] In some technical solutions of this utility model, the hinge body includes a hinge end and a hinge groove. The first hinge point is rotatably connected to the hinge end by a first fastener. The push rod sleeve is disposed in the hinge groove. The rotation of the cam can cause the push rod sleeve to move in the hinge groove. The push rod sleeve drives the valve assembly to move in the valve body.

[0008] In some technical solutions of this utility model, the valve assembly includes a push rod, a sealing ring, a steel ball seat, a steel ball, a gun valve elastic element, and a stop screw. The steel ball seat is provided with a ball seat through hole and a steel ball groove, which can be connected with the steel ball. The sealing ring is installed on the push rod. One end of the push rod is fitted with a push rod sleeve, and the other end of the push rod passes through the valve hole and the ball seat through hole and connects to the steel ball. The steel ball is connected to the gun valve elastic element, and the gun valve elastic element is connected to the stop screw. The stop screw is provided with a screw hole, which communicates with the water inlet.

[0009] The function of the sealing ring is to prevent water inside the valve body from overflowing outside the valve body.

[0010] In some technical solutions of this utility model, a part of the push rod is outside the valve body and is fitted with a push rod sleeve, and the other part of the push rod is fitted into the sealing ring and passes through the ball seat through the ball seat through the ball seat and is connected to the steel ball. The steel ball is connected to the elastic element of the gun valve and is locked together in the valve body by a stop screw.

[0011] In some technical solutions of this utility model, the top rod sleeve includes a limiting block and a protruding cap. The limiting block and the protruding cap are connected. The limiting block and the hinge groove are slidably connected. The protruding cap is provided with a top rod groove. The top rod cap is sleeved on one end of the top rod through the top rod groove.

[0012] Furthermore, the push rod sleeve is made of wear-resistant material, specifically the protruding cap, which can be made of wear-resistant material, such as a wear-resistant alloy. Wear-resistant materials have high hardness, which can effectively resist wear and extend the service life of the material, and also have high strength, which can withstand greater pressure and impact, and are not easily broken.

[0013] In some technical solutions of this utility model, the high-pressure water gun with self-locking function includes a triggering mechanism, which is rotatably connected to the cam via a second fastener.

[0014] In some technical solutions of this utility model, after the connection between the inlet and outlet channels on the valve body is fully opened, the opening valve reaction force of the steel ball is on the same straight line as the first hinge point and the second hinge point of the cam, and the cam self-locks.

[0015] In some technical solutions of this utility model, the triggering mechanism includes a connecting rod and a trigger. One end of the connecting rod is rotatably connected to a second hinge point via a second fastener, and the other end of the connecting rod is rotatably connected to the trigger via a third fastener.

[0016] The function of the reset mechanism is to change the high-pressure gun from the off state to the on state. The operator grips the trigger and rotates it counterclockwise around the fourth fixed part. The connecting rod applies force to the second hinge point, pushing the cam to rotate clockwise around the first hinge point. At the same time, it pushes the push rod sleeve and moves together with the push rod. At this time, the connection between the water inlet and outlet channels on the valve body is opened, and water begins to flow.

[0017] In some technical solutions of this utility model, the high-pressure water gun with self-locking function includes a reset mechanism, which is connected to the trigger mechanism.

[0018] Furthermore, the reset mechanism includes a reset push rod and a reset elastic element, the reset push rod being connected to the trigger, and the reset elastic element being connected to the reset push rod.

[0019] The function of the reset mechanism is to switch the high-pressure gun from the open state to the closed state. When the operator releases the handle, the reset spring and reset rod push the trigger to rotate clockwise around the fourth fixing part to unlock it. Under the action of the elastic element of the gun valve, the push rod and the steel ball move. The steel ball fits tightly with the steel ball seat to close the connection between the water inlet and outlet channels on the valve body, thus stopping the water flow.

[0020] In some technical solutions of this utility model, the high-pressure water gun with self-locking function also includes a gun shell, the gun shell is provided with a mounting groove and multiple mounting holes, the reset mechanism is disposed in the mounting groove, and the valve mechanism and the triggering mechanism are fixed in the gun shell through the mounting holes.

[0021] In some technical solutions of this utility model, the gun case includes a gun barrel and a gun handle. The gun barrel is provided with a first mounting hole, a second mounting hole, a third mounting hole and a mounting groove. The first mounting hole communicates with the water outlet, the second mounting hole is fixedly connected to the valve body, the third mounting hole is for the trigger to pass through, and the trigger is rotatably connected to the gun barrel by a fourth fastener. The trigger and the gun handle are set at an angle.

[0022] Furthermore, a front stop post is provided on the barrel, and a rear stop post is provided on the grip.

[0023] The front stop is the maximum angle at which the trigger and grip are open, and the rear stop is the minimum angle at which the trigger and grip are open. That is, the trigger is in the off position when it is at the front stop, and in the firing position when it is at the rear stop.

[0024] Furthermore, the reset push rod has a raised ring in the middle. The reset elastic element is fitted into one end of the reset push rod and abuts against the raised ring, and together they are set in the mounting groove. The other end of the reset push rod can protrude out of the mounting groove and connect to the trigger.

[0025] The raised ring is to ensure that the reset push rod and the reset elastic element are always located in the mounting groove.

[0026] In some technical solutions of this utility model, the gun casing of the high-pressure water gun with self-locking function can be disassembled into a left gun casing and a right gun casing that are symmetrical to each other.

[0027] Furthermore, the diameter of the push rod is no greater than the inner diameter of the ball seat through hole, the diameter of the steel ball is greater than the inner diameter of the ball seat through hole, and the diameter of the steel ball is smaller than the inner diameter of the valve body.

[0028] The steel ball can make close contact with the steel ball seat to close the connection between the inlet and outlet channels on the valve body. The push rod pushes the steel ball open, separating the steel ball from the steel ball seat, thereby opening the connection between the inlet and outlet channels on the valve body.

[0029] Furthermore, the valve mechanism is made of rigid materials, specifically the steel ball and the steel ball seat are both made of rigid materials.

[0030] Rigid materials can provide sufficient strength, stiffness, and stability, enabling the steel ball and its seat to withstand the water pressure and the elastic force of the valve's elastic components, thus ensuring the long-term durability and safety of the steel ball and its seat.

[0031] Furthermore, the first and second fasteners are rigidly connected and can be pins.

[0032] Rigid connections are easy to install and provide sufficient strength, rigidity, and stability to withstand water pressure and the elastic force of the valve's elastic components.

[0033] Furthermore, the gun valve elastic element and the reset elastic element can be springs.

[0034] This utility model of a high-pressure water gun with a self-locking function utilizes a cam self-locking mechanism. When the connection between the inlet and outlet channels on the valve body is fully open, it is not affected by the water pressure at the inlet, so that the operator does not need to apply a large grip force for a long time, ensuring the comfort and safety of using the high-pressure water gun. Attached Figure Description

[0035] Figure 1 An exploded structural diagram of a high-pressure water gun with self-locking function removing the top rod sleeve, provided for an embodiment of this utility model.

[0036] Figure 2 A schematic diagram of the axial side structure of a high-pressure water gun with self-locking function in the off state, provided for an embodiment of this utility model.

[0037] Figure 3 A schematic diagram of the axial side structure of a high-pressure water gun with self-locking function in the firing state, provided for an embodiment of this utility model.

[0038] Figure 4 for Figure 2 The diagram shows a longitudinal cross-sectional structure of a high-pressure water gun with a self-locking function in the off state.

[0039] Figure 5 for Figure 3 The diagram shows a longitudinal cross-sectional structure of a high-pressure water gun with a self-locking function in the firing state.

[0040] Figure 6 for Figures 2 to 5 A schematic diagram of the axial structure of the center top sleeve;

[0041] In the diagram, 1 is the valve mechanism, 11 is the gun valve sleeve, 111 is the valve body, 1111 is the inlet, 1112 is the outlet, 1113 is the valve hole, 112 is the hinge body, 1121 is the hinge end, 1122 is the hinge groove, 12 is the valve assembly, 121 is the push rod, 122 is the sealing ring, 123 is the steel ball seat, 124 is the steel ball, 125 is the gun valve elastic element, 126 is the stop screw, 13 is the cam, 131 is the first hinge point, and 13 is the first hinge point. 2. Second hinge point; 14. Top rod sleeve; 141. Limiting block; 142. Protruding cap; 1421. Top rod groove; 2. Triggering mechanism; 21. Connecting rod; 22. Trigger; 3. Reset mechanism; 31. Reset top rod; 32. Reset elastic element; 4. Gun case; 41. Gun barrel; 411. First mounting hole; 412. Second mounting hole; 413. Third mounting hole; 414. Mounting groove; 42. Gun handle; 43. Left gun case; 44. Right gun case. Detailed Implementation

[0042] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that for those skilled in the art, any modifications to the invention in various equivalent forms without departing from the principle of the present invention fall within the scope defined by the appended claims.

[0043] Unless the context clearly indicates otherwise, when used in this specification, the terms "comprising" or "including" specify the presence of an element, but do not exclude the presence or addition of one or more other elements.

[0044] In the description of this application, it should be understood that the terms "one end," "the other end," "upper," "lower," "inner side," "end," "between," "side," "side wall," "edge," "surface," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] This utility model of a high-pressure water gun with a self-locking function can effectively solve the technical problem that when using a high-pressure water gun, the operator needs to apply grip force to the triggering mechanism for a long time. In addition, due to the possible fluctuations in the water pressure at the inlet, the operator's hand is easily fatigued after holding the gun for a long time under alternating force.

[0047] This utility model proposes a high-pressure water gun with a self-locking function, referencing... Figures 1 to 6 This is an embodiment of the high-pressure water gun with self-locking function proposed in this utility model. The high-pressure water gun with self-locking function will be described in detail below with reference to the specific drawings.

[0048] like Figure 1 , Figure 2 and Figure 3As shown, this utility model discloses a high-pressure water gun with a self-locking function, comprising a valve mechanism 1, a triggering mechanism 2, a reset mechanism 3, and a gun housing 4. The gun housing 4 has a mounting groove 414 and multiple mounting holes. The valve mechanism 1 has an inlet 1111 and an outlet 1112. The end of the valve mechanism 1 near the inlet 1111 is fixed to the gun housing 4 through a mounting hole. The outlet 1112 of the valve mechanism 1 communicates with a mounting hole on the gun housing 4. The triggering mechanism 2 is installed inside the gun housing 4 and is rotatably connected to the valve mechanism 1 via a second fastener. The reset mechanism 3 is disposed in the mounting groove 414 and is connected to the triggering mechanism 2. By gripping the gun housing 4 and applying a gripping force, the connection between the inlet 1111 and the outlet 1112 on the valve mechanism 1 is controlled. After removing the gripping force, the reset mechanism 3 allows the triggering mechanism 2 to return to its initial state.

[0049] Furthermore, the gun casing 4 includes a gun barrel 41 and a gun handle 42. The gun barrel 41 is provided with a first mounting hole 411, a second mounting hole 412, a third mounting hole 413 and a mounting groove 414. The first mounting hole 411 communicates with the water outlet 1112. The second mounting hole 412 is fixedly connected to the valve mechanism 1. The third mounting hole 413 allows the triggering mechanism 2 to pass through. The triggering mechanism 2 is rotatably connected to the gun barrel 41 by a fourth fastener. The reset mechanism 3 is provided in the mounting groove 414.

[0050] More specifically, the valve mechanism 1 includes a gun valve sleeve 11, a valve assembly 12, a cam 13, and a push rod sleeve 14. The gun valve sleeve 11 includes a valve body 111 and a hinge body 112. The valve body 111 is provided with an inlet 1111, an outlet 1112, and a valve hole 1113. The valve assembly 12 is disposed inside the valve body 111 and can pass through the valve hole 1113 to be exposed outside the valve body 111. The cam 13 is provided with a first hinge point 131 and a second hinge point 132. The first hinge point 131 is rotatably connected to the hinge body 112 by a first fastener. The push rod sleeve 14 is fixedly connected to the valve assembly 12 exposed outside the valve body 111, and the push rod sleeve 14 is in contact with the surface of the cam 13. The triggering mechanism 2 includes a connecting rod 21 and a trigger 22. One end of the connecting rod 21 is rotatably connected to the second hinge point 132 of the cam 13 via a second fastener, and the other end of the connecting rod 21 is rotatably connected to the trigger 22 via a third fastener. The valve body 111 is fixedly connected to the second mounting hole 412, and the trigger 22 passes through the third mounting hole 413 and is rotatably connected to the barrel 41 via a fourth fastener. The trigger 22 and the grip 42 are set at an angle. The above structure is designed to facilitate the operator's gripping of the handle 42 and application of gripping force on the trigger 22 during the transition from the closed to the open state of the high-pressure gun. The angle between the trigger 22 and the handle 42 gradually decreases, and the trigger 22 rotates counterclockwise around the fixed point of the fourth fastener. Then, through the linkage 21, the lever force acts on the second hinge point 132, causing the cam 13 to rotate clockwise around the first hinge point 131. The rotation of the cam 13 can drive the push rod sleeve 14 to move. The push rod sleeve 14 drives the valve assembly 12 to move within the valve body 111 and controls the connection between the inlet 1111 and the outlet 1112 on the valve body 111. The reset mechanism 3 includes a reset push rod 31 and a reset elastic element 32. The reset push rod 31 has a convex ring in the middle. The reset elastic element 32 is fitted into one end of the reset push rod 31 and abuts against the convex ring. They are both disposed in the mounting groove 414. The other end of the reset push rod 31 can protrude out of the mounting groove 414 and connect to the trigger 22. The convex ring is to ensure that the reset push rod 31 and the reset elastic element 32 are always located in the mounting groove 414. During the process of the operator using the high-pressure gun from the off state to the open state, the angle between the trigger 22 and the handle 42 gradually decreases until the cam 13 locks itself. The trigger 22 pushes the reset rod 31 to compress the reset elastic element 32. The reset elastic element 32 accumulates elastic potential energy. When the gripping force is removed, the reset elastic element 32 releases the elastic potential energy and pushes the reset rod 31 to rotate the trigger 22 clockwise back to the initial state. The connecting rod 21 drives the cam 13 to rotate counterclockwise. The valve assembly 12 pushes the push rod sleeve 14 to move, closing the connection between the inlet 1111 and the outlet 1112 of the valve body 111.

[0051] like Figure 1 , Figure 4 and Figure 5As shown, the hinge body 112 includes a hinge end 1121 and a hinge groove 1122. The first hinge point 131 is rotatably connected to the hinge end 1121 via a first fastener. The push rod sleeve 14 is disposed in the hinge groove 1122. The rotation of the cam 13 allows the push rod sleeve 14 to move in the hinge groove 1122, and the push rod sleeve 14 drives the valve assembly 12 to move within the valve body 111. The valve assembly 12 includes a push rod 121, a sealing ring 122, a steel ball seat 123, a steel ball 124, a valve elastic element 125, and a stop screw 126. The steel ball seat 123 is provided with a ball seat through hole and a steel ball groove. The steel ball groove can be connected to the steel ball 124. The steel ball seat 123 and the steel ball 124 are used to control the connection between the inlet 1111 and the outlet 1112 on the valve body 111. The steel ball 124 is tightly fitted with the steel ball groove to close the inlet 1111 and the outlet. The passage 1112 is connected, and the sealing ring 122 is installed on the push rod 121 to prevent liquid from flowing out of the valve body 111. One end of the push rod 121 is fitted with a push rod sleeve 14, and the other end of the push rod 121 passes through the valve hole 1113 and the ball seat through hole and is connected to the steel ball 124. The steel ball 124 is connected to the gun valve elastic element 125, and the gun valve elastic element 125 is connected to the stop screw 126. The stop screw 126 is provided with a screw hole, which is connected to the water inlet 1111. A portion of the push rod 121 is outside the valve body 111 and is fitted with a push rod sleeve 14. The other portion of the push rod 121 is fitted into the sealing ring 122 and passes through the ball seat through the ball seat through the ball seat through the steel ball seat 123 and is connected to the steel ball 124. The steel ball 124 is connected to the gun valve elastic element 125 and is locked together in the valve body 111 by the stop screw 126. The gun valve elastic element 125 applies elastic potential energy to the steel ball 124, and then the steel ball 124 transmits the force to the push rod 121, so that the push rod sleeve 14 fitted at the end of the push rod 121 and the cam 13 always maintain surface contact.

[0052] More specifically, when using a high-pressure gun for operation, an external force greater than the valve opening force (the sum of the gun valve spring and the water pressure at the inlet 1111) pushes the push rod 121 to open the steel ball 124, triggering the mechanism 2 to push the valve mechanism 1 from the gun-off state (e.g., Figure 2 or Figure 4 ) to firing state (e.g.) Figure 3 or Figure 5 ).

[0053] In the off state, the opening valve reaction force acting on the steel ball 124 (the resultant force of the water pressure at the inlet 1111 and the spring force of the valve) is on the same straight line as the first hinge point 131 of the cam 13. At this time, the resultant force of the water pressure at the inlet 1111 and the spring force of the valve is transmitted by the steel ball 124 and acts completely on the steel ball seat 123. The steel ball 124 presses against the push rod 121, making the push rod sleeve 14 and the surface of the cam 13 fit tightly together. The valve elastic element 125 makes the steel ball 124 fit tightly against the steel ball seat 123. Under the dual action of the spring force of the valve elastic element 125 and the water pressure at the inlet 1111, the steel ball 124 completely presses against the steel ball seat 123, closing the connection between the inlet 1111 and the outlet 1112 on the valve body 111, so as to achieve the state of water gun sealing and no water flow.

[0054] When the gun is in the firing state, the reaction force of the opening valve acting on the steel ball 124 (the resultant force of the water pressure at the inlet 1111 and the spring force of the gun valve) is on the same straight line as the first hinge point 131 and the second hinge point 132 of the cam 13. The cam 13 is self-locking. At this time, the resultant force of the water pressure at the inlet 1111 and the spring force of the gun valve is transmitted by the steel ball 124 and acts completely on the first hinge point 131 and the second hinge point 132 of the cam 13 (rigid connection). The push rod sleeve 14 and the surface of the cam 13 are tightly fitted. The push rod 121 separates the steel ball 124 from the steel ball seat 123. The elastic element 125 of the gun valve accumulates elastic potential energy and opens the connection between the inlet 1111 and the outlet 1112 on the valve body 111 to achieve a smooth water flow from the water gun. When the connection between the inlet 1111 and outlet 1112 on the valve body 111 is fully opened, the opening valve reaction force acting on the steel ball 124 (the resultant force of the water pressure at the inlet 1111 and the spring force of the valve gun) is on the same straight line as the first hinge point 131 and the second hinge point 132 of the cam 13, and the cam 13 self-locks.

[0055] like Figure 6 As shown, the push rod sleeve 14 includes a limiting block 141 and a protruding cap 142. The limiting block 141 and the protruding cap 142 are connected and can be integrally formed. The limiting block 141 and the hinge groove 1122 can be slidably connected. The protruding cap 142 is provided with a push rod groove 1421. The push rod sleeve 14 is sleeved on one end of the push rod 121 through the push rod groove 1421. The limiting block 141 is used to limit the rotation of the push rod sleeve 14 and thus prevent the push rod 121 from rotating inside the valve body 111.

[0056] The protruding cap in the push rod sleeve is made of wear-resistant material, which can be a wear-resistant alloy. The protruding cap is the contact point between the push rod sleeve and the cam. The wear-resistant material has high hardness, which can effectively resist wear and extend the service life of the material. It also has high strength, can withstand greater pressure and impact, and is not easy to break.

[0057] After the inlet 1111 and outlet 1112 of the valve body 111 are fully connected, the trigger 22 is positioned on the rear limit post on the barrel 41. The inlet 1111, screw hole, ball seat through hole and outlet 1112 of the valve body 111 are fully connected. The resultant force of the water pressure at the inlet 1111 and the spring force of the valve acts on the first hinge point 131 of the steel ball 124 and the second hinge point 132 of the cam 13, which are on the same straight line. The resultant force of the water pressure at the inlet 1111 and the spring force of the valve acts on the steel ball 124. The transmission of force 24 is entirely applied to the first hinge point 131 and the second hinge point 132 (rigid connection) of the cam 13. The hand needs to hold the trigger 22 for a long time to keep the trigger 22 in the rear stop position on the grip 42 to complete the cleaning work. Since the cam 13 has a self-locking function, the gripping force applied at this time is only the elastic force of the return spring on the trigger 22. Therefore, the hand will be subjected to very little force, that is, it is not affected by the water pressure of the inlet 1111. It can be held with a small force, avoiding hand fatigue caused by holding for a long time.

[0058] This utility model of a high-pressure water gun with a self-locking function utilizes a cam self-locking mechanism. When the connection between the inlet and outlet channels on the valve body is fully open, it is not affected by the water pressure at the inlet, so that the operator does not need to apply a large grip force for a long time, ensuring the comfort and safety of using the high-pressure water gun.

Claims

1. A high-pressure water gun with a self-locking function, characterized in that, The device includes a valve mechanism (1), which comprises a valve sleeve (11), a valve assembly (12), a cam (13), and a push rod sleeve (14). The valve sleeve (11) includes a valve body (111) and a hinge (112). The valve body (111) is provided with an inlet (1111), an outlet (1112), and a valve hole (1113). The valve assembly (12) is disposed inside the valve body (111) and can pass through the valve hole (1113) to be exposed in the valve body (111). In addition, the cam (13) is provided with a first hinge point (131) and a second hinge point (132). The first hinge point (131) is rotatably connected to the hinge body (112) by a first fastener. The push rod sleeve (14) is fixedly connected to the valve assembly (12) exposed outside the valve body (111). The push rod sleeve (14) is in contact with the surface of the cam (13). After the connection between the inlet (1111) and outlet (1112) channels on the valve body (111) is fully opened, the cam (13) self-locks.

2. The high-pressure water gun with self-locking function according to claim 1, characterized in that, The hinge body (112) includes a hinge end (1121) and a hinge groove (1122). The first hinge point (131) is rotatably connected to the hinge end (1121) by a first fastener. The push rod sleeve (14) is disposed in the hinge groove (1122). The rotation of the cam (13) can cause the push rod sleeve (14) to move in the hinge groove (1122). The push rod sleeve (14) drives the valve assembly (12) to move in the valve body (111).

3. The high-pressure water gun with self-locking function according to claim 2, characterized in that, The valve assembly (12) includes a push rod (121), a sealing ring (122), a ball seat (123), a steel ball (124), a gun valve elastic element (125), and a stop screw (126). The ball seat (123) is provided with a ball seat through hole and a steel ball groove. The steel ball groove can be connected with the steel ball (124). The sealing ring (122) is installed on the push rod (121). One end of the push rod (121) is fitted with the push rod sleeve (14). The other end of the push rod (121) passes through the valve hole (1113) and the ball seat through hole and is connected to the steel ball (124). The steel ball (124) is connected to the gun valve elastic element (125). The gun valve elastic element (125) is connected to the stop screw (126). The stop screw (126) is provided with a screw hole, which is connected to the water inlet (1111).

4. The high-pressure water gun with self-locking function according to claim 3, characterized in that, A portion of the push rod (121) is outside the valve body (111) and fitted with a push rod sleeve (14). The other portion of the push rod (121) is fitted into the sealing ring (122) and passes through the ball seat through the ball seat through hole to the steel ball seat (123) and connects to the steel ball (124). The steel ball (124) is connected to the gun valve elastic element (125) and locked together in the valve body (111) by the stop screw (126).

5. The high-pressure water gun with self-locking function according to claim 4, characterized in that, The top rod sleeve (14) includes a limiting block (141) and a protruding cap (142). The limiting block (141) and the protruding cap (142) are connected. The limiting block (141) is slidably connected to the hinge groove (1122). The protruding cap (142) is provided with a top rod groove (1421). The top rod sleeve (14) is sleeved on one end of the top rod (121) through the top rod groove (1421).

6. The high-pressure water gun with self-locking function according to claim 1, characterized in that, It includes a triggering mechanism (2), which is rotatably connected to the cam (13) via a second fastener.

7. The high-pressure water gun with self-locking function according to claim 6, characterized in that, The triggering mechanism (2) includes a connecting rod (21) and a trigger (22). One end of the connecting rod (21) is rotatably connected to the second hinge point (132) via a second fastener, and the other end of the connecting rod (21) is rotatably connected to the trigger (22) via a third fastener.

8. The high-pressure water gun with self-locking function according to claim 7, characterized in that, It includes a reset mechanism (3), which is connected to the trigger mechanism (2).

9. The high-pressure water gun with self-locking function according to claim 8, characterized in that, The reset mechanism (3) includes a reset push rod (31) and a reset elastic element (32). The reset push rod (31) is connected to the trigger (22), and the reset elastic element (32) is connected to the reset push rod (31).

10. The high-pressure water gun with self-locking function according to claim 9, characterized in that, The gun includes a gun housing (4), which is provided with a mounting groove (414) and multiple mounting holes. The reset mechanism (3) is disposed in the mounting groove (414), and the valve mechanism (1) and the trigger mechanism (2) are fixed in the gun housing (4) through the mounting holes.

11. The high-pressure water gun with self-locking function according to claim 10, characterized in that, The gun casing (4) includes a barrel (41) and a handle (42). The barrel (41) is provided with a first mounting hole (411), a second mounting hole (412), a third mounting hole (413), and a mounting groove (414). The first mounting hole (411) communicates with the water outlet (1112). The second mounting hole (412) is fixedly connected to the valve body (111). The third mounting hole (413) is for the trigger (22) to pass through. The trigger (22) is rotatably connected to the barrel (41) by a fourth fastener. The trigger (22) and the handle (42) are set at an angle.

12. The high-pressure water gun with self-locking function according to claim 10, characterized in that, The reset push rod (31) has a raised ring in the middle. The reset elastic element (32) is fitted into one end of the reset push rod (31) and abuts against the raised ring. They are set together in the mounting groove (414). The other end of the reset push rod (31) can protrude out of the mounting groove (414) and connect to the trigger (22).

13. The high-pressure water gun with self-locking function according to claim 10, characterized in that, The gun casing (4) can be disassembled into a left gun casing (43) and a right gun casing (44) that are symmetrical to each other.

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