Spray gun for cleaning device and cleaning device

Abstract

A spray gun for a cleaning device and a cleaning device. The spray gun comprises: a valve assembly (2), a first trigger (3), and a second trigger (4), wherein a lever arm between a first resistance part of the first trigger (3) and a first fulcrum part (1p1) is smaller than a lever arm between a first force application part and the first fulcrum part (1p1), and a lever arm between a second resistance part of the second trigger (4) and a second fulcrum part (1p2) is smaller than a lever arm between a second force application part and the second fulcrum part (1p2). The second trigger takes the part connected to the first trigger as the second resistance part, so that the first trigger and the second trigger form a two-stage compound labor-saving lever structure, and the pressing states of the two triggers of the spray gun can be kept with small driving force.

Description

Spray gun for cleaning equipment and cleaning equipment Technical Field

[0001] The present application relates to a structure of a cleaning device for spraying a cleaning fluid, and in particular to a spray gun and a cleaning device including the spray gun. Background Art

[0002] In the prior art, high-pressure cleaning equipment is often equipped with a spray gun. High pressure refers to the pressure of the fluid used in high-pressure cleaning equipment, which is between 100 bar and 1000 bar. To use the spray gun, the user must pull the trigger of the spray gun to activate it. The user must then continue to press the trigger to keep the spray gun working.

[0003] However, the aforementioned usage process has the following drawbacks. Continuously depressing the trigger of the spray gun can quickly lead to fatigue, making it difficult to maintain this pressure. Furthermore, if the trigger cannot be maintained, the user cannot continue to use the spray gun, thus affecting work efficiency.

[0004] Summary of the Invention

[0005] This application is made in light of the state of the prior art described above. One object of this application is to provide a novel spray gun for cleaning equipment that effectively reduces fatigue experienced by the user while maintaining the trigger of the spray gun, thereby extending the time the spray gun can be used for work and improving work efficiency. Another object of this application is to provide a cleaning device including the aforementioned spray gun for cleaning equipment.

[0006] In order to achieve the above objectives, the present application may adopt the following technical solutions.

[0007] The present application provides a spray gun for cleaning equipment as follows, comprising:

[0008] a housing having a nozzle joint and provided with a first fulcrum portion and a second fulcrum portion;

[0009] a valve assembly installed inside the housing, the valve assembly comprising a valve core and a valve body, the valve body forming a flow path for a cleaning fluid to flow and communicating with the nozzle joint, the valve core being capable of controllably opening and closing the flow path;

[0010] a first trigger engaged with the first fulcrum portion, the first trigger being rotatable about the first fulcrum portion to control the valve core to open and close the flow path, the first trigger having a first resistance portion capable of abutting against the valve core and a first force application portion for receiving a driving force, the moment arm between the first resistance portion and the first fulcrum portion being smaller than the moment arm between the first force application portion and the first fulcrum portion; and

[0011] A second trigger is engaged with the second fulcrum portion and is installed on the first trigger to move as a whole with the first trigger. The second trigger uses the portion connected to the first trigger as a second resistance portion. The second trigger also has a second force-applying portion for receiving driving force. The force arm between the second resistance portion and the second fulcrum portion is smaller than the force arm between the second force-applying portion and the second fulcrum portion.

[0012] In an optional solution, the second trigger is rotationally connected to the first trigger, so that the second trigger as a whole can rotate relative to the first trigger around the part connected to the first trigger while moving with the first trigger, thereby the second trigger can be in standby state and working state.

[0013] In another optional solution, a reset component is further included, which is installed on the first trigger and the second trigger, so that when the first trigger and the second trigger do not receive any driving force, the reset component puts the second trigger in the standby state.

[0014] In another optional solution, one end portion of the second trigger has a first arm portion, and the first arm portion can abut against the second fulcrum portion during the process of the second trigger rotating from the standby state toward the working state.

[0015] In another optional solution, the housing is formed with a locking groove, and in the standby state, the locking groove is engaged with the first arm to limit position.

[0016] In another optional solution, one end of the second trigger further has a second arm portion arranged at an angle to the first arm portion to form a bent structure.

[0017] The second fulcrum portion is sandwiched between the first arm portion and the second arm portion after the second trigger rotates by a predetermined angle from the standby state toward the active state.

[0018] In another optional solution, the housing is formed with a locking groove, and in the standby state, the locking groove and the bending structure formed by the first arm and the second arm are engaged and limited, and the locking groove and the bending structure are configured such that:

[0019] When the second trigger is in the standby state and only the first trigger receives the driving force, a friction force is generated between the locking groove and the bending structure to restrict the rotation of the second trigger;

[0020] When the second trigger is in the standby state and receives a driving force, no friction force that restricts the rotation of the second trigger is generated between the locking groove and the bending structure.

[0021] In another optional solution, the other end of the second trigger serves as the second force-applying portion.

[0022] In another optional solution, in the standby state, the second force-applying portion and the first force-applying portion are in a separated state; in the working state, the second force-applying portion and the first force-applying portion are in abutting state.

[0023] The present application also provides the following cleaning equipment, including the spray gun for cleaning equipment described in any one of the above technical solutions.

[0024] By adopting the above technical solution, the present application provides a novel spray gun for cleaning equipment and a cleaning equipment including the spray gun. In the spray gun, a housing, a valve assembly, a first trigger and a second trigger are assembled together. The housing has a nozzle joint for connecting to a nozzle, so that the injection fluid (such as water) is ejected through the nozzle. The valve assembly is installed inside the housing, and the valve assembly includes a valve core for controlling the opening and closing of the flow path of the valve assembly connected to the nozzle joint. On the one hand, the first trigger is engaged with the first fulcrum portion of the housing, and the first trigger can rotate around the first fulcrum portion. The first trigger has a first resistance portion that abuts against the valve core and a first force-applying portion that receives a driving force, and the force arm between the first resistance portion and the first fulcrum portion is smaller than the force arm between the first force-applying portion and the first fulcrum portion. On the other hand, the second trigger is engaged with the second fulcrum portion of the housing and is installed on the first trigger to move as a whole with the first trigger. The second trigger uses the part connected to the first trigger as the second resistance part. The second trigger also has a second force-applying part that receives the driving force. The force arm between the second resistance part and the second fulcrum part is smaller than the force arm between the second force-applying part and the second fulcrum part.

[0025] Because the moment arm between the first resistance point and the first fulcrum of the first trigger is smaller than the moment arm between the first force-applying point and the first fulcrum, the first trigger, acting as a first-stage lever, constitutes a labor-saving lever. Furthermore, because the moment arm between the second resistance point and the second fulcrum of the second trigger is smaller than the moment arm between the second force-applying point and the second fulcrum, the second trigger, acting as a second-stage lever, also constitutes a labor-saving lever. Furthermore, the second trigger uses the portion connected to the first trigger as the second resistance point, thereby forming a two-stage compound labor-saving lever structure with the first and second triggers. Thus, when the user applies a driving force to the second force-applying point of the second lever, both triggers of the spray gun can be maintained pressed with a reduced driving force. This effectively reduces fatigue experienced by the user while maintaining the spray gun triggers, thereby extending the time the spray gun can be used for work, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1A is a perspective schematic diagram showing a spray gun for a cleaning device according to a first embodiment of the present application.

[0027] FIG. 1B is a schematic cross-sectional view showing the spray gun for the cleaning apparatus in FIG. 1A , wherein a second trigger of the spray gun is in a standby state.

[0028] FIG. 1C is a partially enlarged schematic diagram of FIG. 1B .

[0029] FIG. 1D is a schematic cross-sectional view of the spray gun for the cleaning device in FIG. 1A , wherein the second trigger of the spray gun is in an operating state.

[0030] FIG. 1E is a partially enlarged schematic diagram of FIG. 1D .

[0031] FIG2A is a perspective schematic diagram showing a spray gun for a cleaning device according to a second embodiment of the present application.

[0032] 2B is a schematic cross-sectional view showing the spray gun for the cleaning apparatus in FIG. 2A , wherein the second trigger of the spray gun is in a standby state.

[0033] FIG. 2C is a schematic diagram showing a partial enlargement of FIG. 2B .

[0034] 2D is a schematic cross-sectional view of the spray gun for the cleaning device in FIG. 2A , wherein the second trigger of the spray gun is in an operating state.

[0035] FIG. 2E is a partially enlarged schematic diagram of FIG. 2D . Specific embodiments

[0036] The following describes exemplary embodiments of the present application with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, and are not intended to exhaust all possible embodiments of the present application, nor to limit the scope of the present application.

[0037] In this application, unless otherwise specified, "engagement" means that there is a connection and / or abutment relationship between the trigger and the fulcrum. By engagement, the trigger and the housing can have other forms of relative movement at the fulcrum while they rotate relative to each other rather than being fixed.

[0038] The following first describes a spray gun for cleaning equipment according to a first embodiment of the present application with reference to the accompanying drawings.

[0039] (Spray gun for cleaning equipment according to the first embodiment of the present application)

[0040] As shown in Figures 1A to 1E, a spray gun for cleaning equipment according to a first embodiment of the present application includes an assembled housing 1, a valve assembly 2, a first trigger 3, a second trigger 4, a reset assembly 5, and a nozzle 6. The valve assembly 2, the first trigger 3, the second trigger 4, and the reset assembly 5 are all mounted on the housing 1. By applying a driving force to the first trigger 3 and the second trigger 4, the valve core 21 of the valve assembly 2 can open the valve body 22, and the flow path 22p allows a cleaning fluid (e.g., water) to be ejected from the nozzle 6 of the spray gun.

[0041] In this embodiment, as shown in Figures 1A to 1E, the housing 1 has a gun-shaped structure. The housing 1 comprises a main body 11 and a handle 12, which are assembled together. The main body 11 is cylindrical and hollow, rotating with a central axis. One axial end of the main body 11 (the right end in Figures 1B and 1D) comprises a nozzle connector 111 for connecting to the nozzle 6. The other end of the main body 11 (the left end in Figures 1B and 1D) is fixed to the handle 12. The handle 12 extends from the other end of the main body 11 away from the main body 11 and extends obliquely away from the nozzle connector 111. The handle 12 has a grip for the user's palm to grasp and a guard for protecting the triggers 3 and 4 and preventing them from being accidentally triggered. When installed, both triggers 3 and 4 partially protrude from the grip, allowing the user's palm to grasp the grip and easily apply actuating force to the triggers 3 and 4. Furthermore, the grip is also hollow. In addition, the main body 11 and the gripping portion are respectively formed with mounting ribs protruding toward their inner spaces for fixedly mounting the valve body 22 of the valve assembly 2 .

[0042] Furthermore, within the main body 11 and near the location of the valve core 21 of the valve assembly 2, the main body 11 is provided with a first fulcrum portion 1p1. This first fulcrum portion 1p1 is used to mount and engage the first trigger 3, allowing the first trigger 3 to rotate about the first fulcrum portion 1p1. Within the handle portion 12 and at a location away from the main body 11, the handle portion 12 is provided with a second fulcrum portion 1p2. This second fulcrum portion 1p2 is used to engage (abut) the second trigger 4 during rotation from the standby state to the active state, allowing the second trigger 4 to rotate about the second fulcrum portion 1p2. In this embodiment, the first fulcrum portion 1p1 and the second fulcrum portion 1p2 are both formed as cylindrical bodies protruding from the inner surface of the housing 1 along the width direction of the spray gun (i.e., the direction perpendicular to the paper in Figures 1B to 1E).

[0043] In this embodiment, as shown in Figures 1A to 1E , the valve assembly 2 comprises a valve core 21 and a valve body 22 assembled together. The valve core 21 is mounted within the valve body 22 and controls the opening and closing of the flow path 22p of the valve body 22. Specifically, the valve body 22 has a split structure, comprising a first valve body portion and a second valve body portion. The first valve body portion is coaxially disposed within the main body 11. The flow paths of the first and second valve bodies together constitute the flow path 22p of the valve body 22. One end of the flow path of the first valve body portion is permanently connected to the nozzle connector 111. The valve core 21 is mounted on the first valve body portion and is capable of reciprocating relative to the first valve body portion along the axial direction of the main body 11, thereby controlling the flow path 22p of the first valve body portion to communicate with the flow path of the second valve body portion via the valve core 21. The second valve body portion is primarily disposed within the grip portion of the handle 12. The flow path in the second valve body portion is controlledly connected to the flow path of the first valve body portion via the valve core 21.

[0044] In this embodiment, as shown in Figures 1A to 1E , the first trigger 3 is mounted on the housing 1 and engages with the first fulcrum portion 1p1 of the housing 1, thereby enabling the first trigger 3 to rotate about the first fulcrum portion 1p1. The first trigger 3 has a first resistance region that, during rotation, abuts against the valve core 21 (as shown in Figure 1D ), pushing the valve core 21 to open the flow path 22p of the valve body 22. Furthermore, the first trigger 3 also has a first force application region located on the grip portion. The dimensions of the first force application region are designed to facilitate application of a driving force to the first trigger 3 by a user's finger while the grip portion is held. It is understood that the first force application region may not be exactly the same when used by different users or by the same user in different usage states. The aforementioned first force application region can be understood as the set of force application regions in all situations. Furthermore, as a first-stage force-saving lever structure, the moment arm between the first resistance region and the first fulcrum portion 1p1 is always smaller than the moment arm between the first force application region and the first fulcrum portion 1p1.

[0045] In this embodiment, as shown in Figures 1B to 1E , the second trigger 4 is mounted on the movable fulcrum portion 3p of the first trigger 3 and is capable of engaging (abutting) against the second fulcrum portion 1p2 of the housing 1. The movable fulcrum portion 3p may also be a cylindrical body extending along the width direction. Thus, the second trigger 4 as a whole moves with the first trigger 3 and is capable of rotating relative to the first trigger 3 about the portion connected to the first trigger 3 (the movable fulcrum portion 3p), allowing the second trigger 4 to be in a standby state (Figures 1B and 1C) and an active state (Figures 1D and 1E).

[0046] As shown in Figures 1C and 1E , the second trigger 4 includes a middle portion and two end portions 41 and 42 located on either side of the middle portion. The middle portion of the second trigger 4 can be rotatably connected to the first force-applying portion of the first trigger 3, thereby allowing the portion of the second trigger 4 connected to the first trigger 3 to function as a second resistance portion. In this embodiment, since one end of the first trigger 3 is engaged with the first fulcrum portion 1p1, the second trigger 4 is rotatably connected to the other end of the first trigger 3, which is distal to the first fulcrum portion 1p1. This maximizes the moment arm of the driving force applied by the second trigger 4 to the first trigger 3. Furthermore, one end portion 41 of the second trigger 4 has a first arm portion 411 and a second arm portion 412 arranged at an angle to form a bent structure. The first arm portion 411 can abut against the second fulcrum portion 1p2, allowing the second trigger 4 to rotate about the second fulcrum portion 1p2. After the second trigger 4 rotates a predetermined angle from the standby state to the active state, as shown in Figure 1E , the bent structure cooperates with the second fulcrum portion 1p2, causing the first arm portion 411 and the second arm portion 412 to clamp the second fulcrum portion 1p2. Forming this bent structure on the one end portion 41 of the second trigger 4 serves the following functions: first, it prevents the one end portion 41 of the second trigger 4 from unexpectedly separating from the second fulcrum portion 1p2 during rotation, thereby improving the operational reliability of the second trigger 4. Second, during assembly, the bent structure creates a certain locking relationship with the second fulcrum portion 1p2, facilitating assembly of the second trigger 4 and improving the reliability and stability of the assembled structure. Furthermore, the second valve body portion of the valve body 22 is formed with a locking groove 22c. As shown in FIG1C , in the standby state, the locking groove 22c engages with the bent structure formed by the first arm 411 and the second arm 412 to prevent rotation. The locking groove 22c and the bent structure are configured such that when the second trigger 4 is in the standby state and only the first trigger 3 is receiving actuating force, frictional force is generated between the locking groove 22c and the bent structure, preventing rotation of the second trigger 4. However, when the second trigger 4 is in the standby state and receiving actuating force, frictional force is not generated between the locking groove 22c and the bent structure to prevent rotation of the second trigger 4. This frictional force maintains the first trigger 3 in the safe locked state, allowing the rated failure value for the first trigger 3 to escape the safe locked state to be calculated using trigonometric functions, thereby preventing accidental activation of the first trigger 3. Furthermore, direct activation of the second trigger 4 is unaffected by this frictional force, thereby preventing adverse effects on direct operation of the second trigger 4. Furthermore, the other end 42 of the second trigger 4 serves as a second force-applying site. It is understood that when different users use the device or the same user uses the device in different states, the second force application location is not exactly the same. The second force application location can be understood as a collection of force application locations in all situations.In the standby state, as shown in FIG1C , the second force-applying portion is separated from the first force-applying portion; in the active state, as shown in FIG1E , the second force-applying portion abuts the first force-applying portion. With the above-described structure, as a second-stage effort-saving lever structure, the moment arm between the second resistance portion of the second trigger 4 and the second fulcrum portion 1p2 is always smaller than the moment arm between the second force-applying portion and the second fulcrum portion 1p2.

[0047] In this embodiment, as shown in Figures 1B to 1E, the reset assembly 5 includes a torsion spring, which is fitted onto the movable fulcrum portion 3p. One end of the torsion spring abuts against the second trigger 4 and the other end abuts against the first trigger 3, so that when neither the first trigger 3 nor the second trigger 4 receives any driving force, the reset assembly 5 puts the second trigger 4 in a standby state.

[0048] In this embodiment, as shown in Figures 1A, 1B and 1D, the nozzle 6 is installed on the nozzle joint 111 of the main body 11 of the shell 1, so that when the valve core 21 of the valve assembly 2 opens the valve body 22, the cleaning fluid (such as water) in the flow path 22p can be sprayed out from the nozzle 6 of the spray gun.

[0049] Thus, because the moment arm between the first resistance point of the first trigger 3 and the first fulcrum 1p1 is always smaller than the moment arm between the first force-applying point and the first fulcrum 1p1, the first trigger 3, as a first-stage lever, constitutes a labor-saving lever. Furthermore, because the moment arm between the second resistance point of the second trigger 4 and the second fulcrum 1p2 is always smaller than the moment arm between the second force-applying point and the second fulcrum 1p2, the second trigger 4, as a second-stage lever, also constitutes a labor-saving lever. Furthermore, the second resistance point of the second trigger 4 is located within the first force-applying point of the first trigger 3, thereby forming a two-stage compound labor-saving lever structure with the first and second triggers 3 and 4. When the user applies a driving force to the second force-applying point of the second lever, the trigger of the spray gun can be maintained depressed with a reduced driving force. This effectively reduces fatigue while the user maintains the trigger depressed and improves user comfort, thereby extending the time the spray gun can be used for work, thereby increasing work efficiency.

[0050] The following describes a spray gun for cleaning equipment according to a second embodiment of the present application in conjunction with the accompanying drawings.

[0051] (Spray gun for cleaning equipment according to the second embodiment of the present application)

[0052] The structure of the spray gun for cleaning equipment according to the second embodiment of the present application is basically the same as the structure of the spray gun for cleaning equipment according to the first embodiment of the present application. The following mainly describes the differences between the two.

[0053] In this embodiment, as shown in Figures 2A to 2E , the valve core 21 of the valve assembly 2 is disposed within the handle 12, controlling the opening and closing of the flow path 22p within the valve body 22. To ensure that the moment arm between the first resistance point of the first trigger 3 and the first fulcrum 1p1 is smaller than the moment arm between the first force-applying point and the first fulcrum 1p1, the first fulcrum 1p1 is also disposed on the handle 12, near the valve core 21. Similarly, to ensure that the moment arm between the second resistance point of the second trigger 4 and the second fulcrum 1p2 is smaller than the moment arm between the second force-applying point and the second fulcrum 1p2, the second trigger 4 is pivotally connected to the end of the first trigger 3 distal from the first fulcrum 1p1, and the second fulcrum 1p2 is also disposed on the main body 11. Furthermore, in this embodiment, the locking groove 22c corresponding to the second trigger 4 is omitted. While this changes the internal structure of the spray gun, the same two-stage compound lever structure is employed, achieving the same force-saving effect as described in the first embodiment.

[0054] It should be understood that the above embodiments are merely illustrative and are not intended to limit the present application. Those skilled in the art may, based on the teachings of this application, make various modifications and alterations to the above embodiments without departing from the scope of this application. The following is a supplementary explanation of the technical solution of this application.

[0055] i. The present application also provides a cleaning device, which may include the spray gun for cleaning equipment according to the present application and a high-pressure device for pumping fluid.

[0056] ii. In addition to the second trigger 4 having a reset assembly 5, the spray gun according to the present application is provided with a reset component (such as a cylindrical coil spring, etc.) corresponding to the valve core 21 of the valve assembly 2 and the first trigger 3, so that when the driving force on the two triggers 3 and 4 is canceled, these components can be restored to the position before the triggers 3 and 4 are triggered.

[0057] iii. In the above specific embodiment, it is described that the locking groove 22c is provided in the valve body 22 of the valve assembly 2, but the present application is not limited thereto. In other optional solutions, the locking groove can be provided in the housing 1.

[0058] In addition, in other optional solutions, only the first arm 411 may be provided without the second arm 412. In this case, only the first arm 411 may be used in conjunction with the locking groove 22c for position limiting, or the second trigger 4 may be provided with an additional position limiting structure (e.g., a position limiting protrusion) that cooperates with the locking groove 22c for position limiting. In these optional solutions, whether only the first arm 411 is used in conjunction with the locking groove 22c for position limiting, or an additional position limiting structure is used in conjunction with the locking groove 22c for position limiting, both can achieve the same effect as the position limiting by the bending structure formed by the first arm 411 and the second arm 412 in conjunction with the locking groove 22c as described in the above embodiment.

[0059] Explanation of Reference Numerals 1 Housing; 1p1 First fulcrum portion; 1p2 Second fulcrum portion; 11 Main body portion; 111 Nozzle joint; 12 Handle portion; 2 Valve assembly; 21 Valve core; 22 Valve body; 22p Flow path; 22c Locking groove; 3 First trigger; 3p Moving fulcrum portion; 4 Second trigger; 41 One end portion; 411 First arm portion; 412 Second arm portion; 42 Other end portion; 5 Reset assembly; 6 Nozzle.

Claims

1. A spray gun for cleaning equipment, characterized in that: include: a housing having a nozzle joint and provided with a first fulcrum portion and a second fulcrum portion; a valve assembly installed inside the housing, the valve assembly comprising a valve core and a valve body, the valve body forming a flow path for the cleaning fluid to flow and communicating with the nozzle joint, the valve core being capable of controllably opening and closing the flow path; a first trigger engaged with the first fulcrum portion, the first trigger being capable of rotating around the first fulcrum portion to control the valve core to open and close the flow path, the first trigger having a first resistance portion capable of abutting against the valve core and a first force application portion for receiving a driving force, the force arm between the first resistance portion and the first fulcrum portion being smaller than the force arm between the first force application portion and the first fulcrum portion; as well as A second trigger is engaged with the second fulcrum portion and is installed on the first trigger so as to move as a whole with the first trigger. The second trigger uses the portion connected to the first trigger as a second resistance portion. The second trigger also has a second force application portion for receiving a driving force. The force arm between the second resistance portion and the second fulcrum portion is smaller than the force arm between the second force application portion and the second fulcrum portion.

2. The spray gun for cleaning equipment according to claim 1, characterized in that: The second trigger is rotationally connected to the first trigger, so that the second trigger as a whole can rotate relative to the first trigger around the portion connected to the first trigger while moving with the first trigger, thereby the second trigger can be in a standby state and a working state.

3. The spray gun for cleaning equipment according to claim 2, characterized in that: The invention also includes a reset component installed on the first trigger and the second trigger, so that when the first trigger and the second trigger do not receive the driving force, the reset component puts the second trigger in the standby state.

4. The spray gun for cleaning equipment according to claim 2 or 3, characterized in that: One end of the second trigger has a first arm portion, and the first arm portion can abut against the second fulcrum portion during the process of the second trigger rotating from the standby state toward the working state.

5. The spray gun for cleaning equipment according to claim 4, characterized in that: The housing is formed with a locking groove, and in the standby state, the locking groove is engaged with the first arm to limit position.

6. The spray gun for cleaning equipment according to claim 4, characterized in that: One end of the second trigger further has a second arm portion arranged at an angle to the first arm portion to form a bent structure. The second fulcrum portion is sandwiched between the first arm portion and the second arm portion after the second trigger is rotated by a predetermined angle from the standby state toward the operating state.

7. The spray gun for cleaning equipment according to claim 6, characterized in that: The housing is formed with a locking groove, and in the standby state, the locking groove is engaged with a bending structure formed by the first arm and the second arm to limit the position, and the locking groove and the bending structure are configured such that: When the second trigger is in the standby state and only the first trigger receives the driving force, a friction force is generated between the locking groove and the bending structure to limit the rotation of the second trigger; When the second trigger is in the standby state and receives a driving force, no friction force that restricts the rotation of the second trigger is generated between the locking groove and the bending structure.

8. The spray gun for cleaning equipment according to claim 4, characterized in that: The other end of the second trigger serves as the second force applying portion.

9. The spray gun for cleaning equipment according to claim 8, characterized in that: In the standby state, the second force applying portion and the first force applying portion are in a separated state; in the working state, the second force applying portion and the first force applying portion are in abutting state.

10. A cleaning device, characterized in that: A spray gun for cleaning equipment comprising the spray gun according to any one of claims 1 to 9.

Images