Handheld waterproof high-pressure washer

Abstract

The present invention provides a handheld waterproof high-pressure cleaner, which includes a motor pump assembly, a water inlet valve assembly, a gun rod assembly, a trigger control assembly, a control circuit board, a sealing unit and a housing. Among them: the motor pump assembly is hermetically connected to the water inlet valve assembly; the trigger control assembly and the water inlet valve assembly are connected by a shaft at the upper end of the water inlet valve rod to form a link structure; a trigger rotation shaft is arranged inside the housing, a shaft hole is arranged on the trigger, and the trigger control assembly, the water inlet valve assembly and the motor pump assembly are connected and arranged inside the housing; a sealing unit is arranged at the tail of the housing to place the battery pack and the control circuit board inside the sealing unit. In the present invention, a safety pin is arranged on the trigger to lock the main switch and the water inlet valve structure at the same time; the trigger control assembly can realize the function of controlling the power supply and the water source at the same time.

Description

Technical Field

[0001] The present invention relates to the field of cleaning agents, and more particularly, to a handheld waterproof high-pressure cleaner. Background Art

[0002] The handheld high-pressure cleaner is powered by a rechargeable battery and is connected to an external water source through an external water inlet pipe. Its characteristics are more convenient for people to clean compared to traditional cleaners including a main unit, a spray gun, an AC power supply, a water pump, etc. Its operation is not restricted by power and water sources and the complexity of operation. Since the use of a handheld high-pressure cleaner is inseparable from water, especially for outdoor cleaners, the waterproofing of its battery and control circuit part is particularly important. However, at present, the battery and control circuit board parts inside the handheld high-pressure cleaner on the market are not effectively sealed, which easily causes the battery and control circuit board parts to get water and generate risks of short circuit and electric leakage, and even serious safety hazards such as battery combustion and explosion.

[0003] At present, the battery and control circuit board parts inside the handheld high-pressure cleaner on the market are not effectively sealed. When using the machine, it is easy to cause the battery and control circuit board parts to get water and generate risks of short circuit and electric leakage, and even serious safety hazards such as battery combustion and explosion. The purpose of the present invention is to solve the waterproof problem of the internal control circuit board and battery of the machine, making the machine safer to use. Summary of the Invention

[0004] Aiming at the defects in the prior art, the purpose of the present invention is to provide a handheld waterproof high-pressure cleaner.

[0005] According to a handheld waterproof high-pressure cleaner provided by the present invention, it includes a motor pump assembly, a water inlet valve assembly, a gun rod assembly, a trigger control assembly, a control circuit board, a sealing unit, and a machine shell, wherein:

[0006] The motor pump assembly is hermetically connected to the water inlet valve assembly;

[0007] The trigger control assembly and the water inlet valve assembly are connected by a shaft at the upper end of the water inlet valve rod to form a connecting rod structure;

[0008] A trigger rotation shaft is arranged inside the machine shell, a shaft hole is arranged on the trigger, and the trigger control assembly, the water inlet valve assembly, and the motor pump assembly are connected and arranged inside the machine shell;

[0009] A sealing unit is arranged at the tail of the machine shell to place the battery pack and the control circuit board inside the sealing unit.

[0010] Preferably, it further includes a speed regulation unit that transmits signals to adjust the motor speed of the motor pump assembly.

[0011] Preferably, the water inlet valve assembly includes a water inlet connecting pipe, a water inlet valve rod assembly, a water inlet joint, a water inlet valve spring, and a water inlet joint, where:

[0012] A communicating joint is designed in the middle vertical direction of the water inlet connecting pipe and is hermetically connected to the motor pump pipeline;

[0013] A vertically movable water inlet valve rod assembly is arranged inside the water inlet connecting pipe, and both ends of the connecting channel of the water inlet valve rod assembly are sealed. When the water inlet valve rod assembly compresses and moves under the action of the trigger, the water inlet is opened. On the contrary, under the action of the water inlet valve spring, the water inlet valve rod assembly resets and closes the water inlet.

[0014] Preferably, the trigger control assembly includes a trigger, a main switch, a switch button, and a button spring, where:

[0015] The main switch is fixed inside the trigger. A rotating shaft is designed at the upper end of the switch button and is connected to the trigger. A button spring is arranged between the switch button and the trigger;

[0016] The trigger control assembly is connected to the water inlet valve through the shaft at the upper end of the water inlet valve rod. A shaft hole is designed on the same side of the trigger, and a shaft is designed on the machine shell to fix the trigger control assembly to the machine shell, forming a connecting rod motion structure.

[0017] Preferably, a safety pin is further included. The safety pin is arranged at the lower end of the switch button on the trigger. A groove is designed on the safety pin, and a limiting rib is arranged on the switch button;

[0018] In the free state, when the safety pin is not pressed, the limiting rib on the switch button coincides with the safety pin groove, and the switch button and the trigger can rotate normally, and the handheld waterproof high-pressure cleaner can be used;

[0019] When the safety pin is pressed for safety locking, the groove of the safety pin is misaligned with the limiting rib of the switch button, locking the switch button. At the same time, the other side of the pressed safety pin extends beyond the edge of the machine shell, locking the entire trigger control assembly, controlling the water inlet valve to let water in, realizing the simultaneous locking of the switch button and the water inlet valve, and the handheld waterproof high-pressure cleaner cannot be used.

[0020] Preferably, the sealing unit includes a housing, a waterproof box, a machine shell sealing ring, a connecting wire sealing ring, and a waterproof box sealing ring, where:

[0021] The machine shell sealing ring is hermetically fixed to the left and right machine shells. The connecting wire of the control circuit board passes through the hole of the connecting sealing ring and is sealed with the left and right machine shells. A waterproof box sealing ring groove is designed on the inner side of the cooperation between the waterproof box and the machine shell, and the waterproof box sealing ring is placed in the groove and sealed with the bottom of the machine shell to form a sealed cavity.

[0022] Preferably, a shaft is provided on one side of the waterproof box to connect with the machine housing, enabling the waterproof box to rotate relative to the machine housing. A locking buckle is provided at the other end of the waterproof box. The locking buckle is connected to the waterproof box through a locking buckle shaft, and a locking buckle spring is provided at the other end of the locking buckle. A locking buckle groove is designed on the outer side of the machine housing. Under the action of the locking buckle spring, the waterproof box assembly is hermetically fixed to the machine housing.

[0023] Preferably, a drain hole is designed on the outer side of the upper end of the sealing unit to drain the residual water or accumulated water inside the machine housing.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. In the present invention, the rechargeable battery and the control circuit board are arranged in an integral sealed cavity, effectively isolating the risks of battery and control circuit board leakage and short - circuit caused by external water ingress, and effectively improving the use safety of the machine.

[0026] 2. In the present invention, by providing a safety pin on the trigger, the main switch and the water inlet valve structure can be locked simultaneously.

[0027] 3. The trigger control assembly of the present invention can realize the function of simultaneously controlling the power supply and the water source. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] By reading the following detailed description of the non - restrictive embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present invention will become more apparent:

[0029] Figure 1 is a schematic diagram of the external structure of the handheld waterproof high - pressure cleaner of the present invention;

[0030] Figure 2 is a schematic diagram of the internal structure of the handheld waterproof high - pressure cleaner of the present invention;

[0031] Figure 3 is a schematic diagram of different states of a cross - section along the Figure 1 A - A direction.

[0032] The figures show:

[0033] The gun rod assembly 1

[0034] The motor - pump assembly 2

[0035] The water inlet valve assembly 3

[0036] The speed - regulating unit 4

[0037] The trigger control assembly 5

[0038] The sealing unit 6

[0039] The battery pack 7

[0040] Control circuit board 8

[0041] Machine housing 9

[0042] Spray head 11

[0043] DC motor 21

[0044] Water inlet valve stem assembly 31

[0045] Water inlet connecting pipe 32

[0046] Water inlet joint 33

[0047] Water inlet valve spring 34

[0048] Switch button 51

[0049] Main switch 52

[0050] Button spring 53

[0051] Safety pin 54

[0052] Trigger 55

[0053] Trigger rotation shaft 511

[0054] Machine housing sealing ring 61

[0055] Connecting wire sealing ring 62

[0056] Waterproof box sealing ring 63

[0057] Latch 64

[0058] Latch shaft 65

[0059] Latch spring 66

[0060] Waterproof box shaft 611

[0061] Drain hole 612 Specific implementation mode

[0062] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all belong to the protection scope of the present invention.

[0063] Such as Figures 1 to 3As described above, a handheld waterproof high-pressure cleaner provided according to the present invention includes a motor pump assembly, a water inlet valve assembly, a gun rod assembly, a trigger control assembly, a control circuit board, a battery sealing unit, and a machine shell. The motor pump is hermetically connected to the water inlet valve. The trigger control assembly and the water inlet valve assembly are connected by a shaft at the upper end of the water inlet valve rod to form a connecting rod structure. A trigger rotation shaft is provided inside the machine shell, and a shaft hole is provided on the trigger. The connections of the trigger control assembly, the water inlet valve assembly, and the motor pump assembly are placed inside the machine shell. A sealing unit is provided at the tail of the machine body to place the battery pack and the circuit board inside the sealing unit. The speed control unit transmits a signal to change the motor speed of the motor pump, thereby changing the water outlet pressure of the machine and being suitable for cleaning in different environments.

[0064] The water inlet valve assembly includes a water inlet connecting pipe, a water inlet valve rod assembly, a water inlet joint, and a water inlet valve spring. A communication joint is designed vertically in the middle of the water inlet connecting pipe and is hermetically connected to the motor pump pipeline. A vertically movable water inlet valve rod assembly is provided inside the water inlet connecting pipe, and seals are provided at both ends of its connection channel. When the water inlet valve rod assembly compresses and moves under the action of the trigger, the water inlet is opened. Conversely, under the action of the water inlet valve spring, the water inlet valve rod assembly resets to close the water inlet.

[0065] The trigger control assembly includes a trigger, a main switch, a switch button, a button spring, and a safety pin. The main switch is fixed inside the trigger. A rotation shaft is designed at the upper end of the switch button and is connected to the trigger. A button spring is provided between the switch button and the trigger. The trigger control assembly is connected to the water inlet valve through a shaft at the upper end of the water inlet valve rod. A shaft hole is designed at a certain distance on the same side of the trigger, and a shaft is designed on the machine shell to fix the trigger assembly to the machine shell, forming a connecting rod motion structure. During operation, the hand holds the switch button and the trigger simultaneously to turn on the power and the water inlet valve in sequence to start the machine for normal use. A safety pin is provided at the lower end of the switch button on the trigger. A groove is designed on the safety pin, and a limiting rib is designed on the switch button. In the free state, when the safety pin is not pressed, the rib on the switch button coincides with the groove of the safety pin. At this time, the switch button and the trigger can rotate normally to use the machine. When the safety pin is pressed for safety locking, the groove of the safety pin is misaligned with the limiting rib of the switch button to lock the switch button. At the same time, the other side of the safety pin pressed exceeds the edge of the machine shell to lock the entire trigger assembly and control the water inlet of the water inlet valve, achieving the purpose of locking the switch button and the water inlet valve simultaneously.

[0066] The sealing unit includes a housing, a waterproof box, a housing sealing ring, a connecting wire sealing ring, a waterproof box sealing ring. The housing sealing ring is hermetically fixed to the left and right housings. The connecting wires of the control circuit board pass through the holes of the connecting sealing ring and are sealed with the left and right housings. A sealing ring groove is designed on the inner side where the waterproof box and the housing are fitted. The waterproof box sealing ring is placed in the groove to seal with the bottom of the housing to form a sealed cavity. The control circuit board and the battery pack are placed in the sealed cavity to achieve the purpose of waterproofing the control circuit board and the battery pack. A shaft is provided on one side of the waterproof box to connect with the housing, enabling the waterproof box and the housing to rotate. A lock is provided at the other end of the waterproof box. The lock is connected to the waterproof box through a lock shaft. A lock spring is provided at the other end of the lock. A lock groove is designed on the outer side of the housing. Under the action of the lock spring, the waterproof box assembly is hermetically fixed to the housing. Press the lower end of the lock to open the lock and rotate to open the waterproof box, and the battery pack can be freely taken out. A drain hole is designed on the outer side of the upper end of the sealing unit to drain the residual water or accumulated water inside the housing, ensuring the sealing reliability of the sealing unit.

[0067] The present invention realizes the sealing function of the battery pack and the control circuit board through the sealing unit, can simultaneously control the power supply and the water source through the trigger control assembly, and the safety pin on the trigger can simultaneously lock the main switch and the water inlet valve structure.

[0068] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

Claims

1. A handheld waterproof high-pressure cleaner, characterized in that, It includes a motor pump assembly, a water inlet valve assembly, a gun rod assembly, a trigger control assembly, a control circuit board, a sealing unit and a housing, wherein: The motor pump assembly is hermetically connected to the water inlet valve assembly; The trigger control assembly is connected to the water inlet valve assembly through a shaft at the upper end of the water inlet valve rod, forming a connecting rod structure; A trigger rotation shaft is arranged inside the housing, a shaft hole is arranged on the trigger, and the trigger control assembly, the water inlet valve assembly and the motor pump assembly are connected and placed inside the housing; A sealing unit is arranged at the tail of the housing, and the battery pack and the control circuit board are placed inside the sealing unit; It further includes a speed regulation unit, and the speed regulation unit transmits signals to adjust the motor speed of the motor pump assembly; The water inlet valve assembly includes a water inlet connecting pipe, a water inlet valve rod assembly, a water inlet valve spring and a water inlet joint, wherein: A communicating joint is designed vertically in the middle of the water inlet connecting pipe and is hermetically connected to the motor pump pipeline; A vertically movable water inlet valve rod assembly is arranged inside the water inlet connecting pipe, and both ends of the connecting channel of the water inlet valve rod assembly are sealed. When the water inlet valve rod assembly compresses and moves under the action of the trigger, the water inlet is opened. On the contrary, under the action of the water inlet valve spring, the water inlet valve rod assembly resets and closes the water inlet; The trigger control assembly includes a trigger, a main switch, a switch button and a button spring, wherein: The main switch is fixed inside the trigger, a rotation shaft is designed at the upper end of the switch button and is connected to the trigger, and a button spring is arranged between the switch button and the trigger; The trigger control assembly is connected to the water inlet valve through a shaft at the upper end of the water inlet valve rod. A shaft hole is designed on the same side of the trigger, and a shaft is designed on the housing to fix the trigger control assembly to the housing, forming a connecting rod motion structure; It further includes a safety pin, and the safety pin is arranged at the lower end of the switch button on the trigger. A groove is designed on the safety pin, and a limiting rib is arranged on the switch button; In the free state, when the safety pin is not pressed, the limiting rib on the switch button coincides with the safety pin groove, and the switch button and the trigger can rotate normally; the handheld waterproof high-pressure cleaner can be used; When the safety pin is pressed for safety locking, the groove of the safety pin is misaligned with the limiting rib of the switch button, locking the switch button. At the same time, the other side of the safety pin pressed exceeds the edge of the housing, locking the entire trigger control assembly, controlling the water inlet of the water inlet valve, realizing the simultaneous locking of the switch button and the water inlet valve, and the handheld waterproof high-pressure cleaner cannot be used; The sealing unit includes a housing, a waterproof box, a housing sealing ring, a connecting wire sealing ring and a waterproof box sealing ring, wherein: The housing sealing ring is hermetically fixed to the left and right housings. The connecting wire of the control circuit board passes through the hole of the connecting sealing ring and is sealed with the left and right housings. A waterproof box sealing ring groove is designed on the inner side of the cooperation between the waterproof box and the housing, and the waterproof box sealing ring is placed in the groove and sealed with the bottom of the housing to form a sealed cavity; A drain hole is designed on the outer side of the upper end of the sealing unit, and the residual water or accumulated water inside the housing is discharged through the drain hole.

2. The hand-held waterproof high-pressure cleaning machine according to claim 1, wherein, A shaft is arranged on one side of the waterproof box and connected to the housing, enabling the waterproof box to rotate with the housing. A lock catch is arranged at the other end of the waterproof box. The lock catch is connected to the waterproof box through a lock catch shaft. A lock catch spring is arranged at the other end of the lock catch. A lock catch groove is designed on the outer side of the housing, and the waterproof box assembly is hermetically fixed to the housing under the action of the lock catch spring.

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