Water inlet assembly and high-pressure cleaning machine

Abstract

The present application relates to a water inlet assembly and a high-pressure cleaning machine, the water inlet assembly is used in the high-pressure cleaning machine. The water inlet assembly comprises a water inlet end, a water inlet connector connected to the water inlet end, and a flow guide device installed in the water inlet connector. The water inlet assembly has a water inlet part and a water outlet part arranged on both sides and a water inlet chamber between the water inlet part and the water outlet part. External water flows into the water inlet part, flows through the flow guide device, and is discharged from the water outlet part. The flow guide device has a support disc close to the water inlet part, a filter cartridge extending from one side end surface of the support disc, and a flow guide feature arranged on the other side end surface of the support disc. The external water flowing into the water inlet part is guided by the flow guide feature and impacts the filter cartridge in a spiral flow manner. The external water passes through the filter cartridge, and the stains carried in the external water are separated and collected in the water inlet chamber. The water inlet assembly can make the high-pressure cleaning machine have the advantages of good filtering performance and high water inlet efficiency.

Description

[Technical Field]

[0001] This invention relates to the field of power tool technology, and in particular to a water inlet assembly and a high-pressure cleaner using the water inlet assembly. [Background Technology]

[0002] High-pressure washers are widely used for cleaning vehicles, yards, and floors. Their working principle is generally that the motor assembly drives the plunger to reciprocate, forming high-pressure water in the pump and spraying it outward through the nozzle to achieve the purpose of rinsing items. The external water flow is generally delivered to the pump through the water inlet assembly. Because the water inlet assembly has the characteristics of simple structure and low cost, it is favored by users.

[0003] However, existing water inlet components are generally water inlet connectors, which do not have the function of filtering dirt particles. If water containing dirt particles is drawn into the pump, it will inevitably reduce the pump's pressurization performance and, in severe cases, shorten the service life of the high-pressure washer.

[0004] Therefore, it is determined that it is necessary to provide an improved water inlet assembly and a high-pressure cleaner to overcome the deficiencies of the prior art. [Summary of the Invention]

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a water inlet component and a high-pressure cleaner using the water inlet component. The water inlet component enables the high-pressure cleaner to have advantages such as good filtration performance and high water inlet efficiency.

[0006] The present invention solves the problems of the prior art by adopting the following technical solution: a water inlet assembly, including a water inlet end, a water inlet connector connected to the water inlet end, and a diversion device installed in the water inlet connector. The water inlet assembly has a water inlet portion and a water outlet portion on both sides, and a water inlet chamber located between the water inlet portion and the water outlet portion. External water flows in from the water inlet portion, flows through the diversion device, and is discharged from the water outlet portion. The diversion device has a support plate near the water inlet portion, a filter cartridge extending from one end face of the support plate, and a diversion feature on the other end face of the support plate. The external water flow entering from the water inlet portion is guided by the diversion feature and impacts the filter cartridge in a spiral flow manner. The external water flow passes through the filter cartridge, and the dirt carried in the external water flow is separated and collected in the water inlet chamber.

[0007] A further improvement is as follows: the drainage feature has a base installed at the center of the support plate and a drainage rib extending spirally from the base toward the edge of the support plate, the drainage rib being formed by a first curved edge and a second curved edge disposed opposite to the first curved edge.

[0008] A further improvement is as follows: the end of the first curved edge near the base and the end of the second curved edge near the base form a drainage proximal end, the end of the first curved edge away from the base and the end of the second curved edge away from the base form a drainage distal end, and the width of the drainage rib decreases from the drainage proximal end to the drainage distal end.

[0009] A further improvement is that the ends of the drainage distal end converge into one endpoint.

[0010] A further improvement is as follows: the drainage device has a drainage outlet connected to the filter cartridge, the drainage outlet including a transition section connected to the filter cartridge, a straight section extending from the transition section, and an outlet flange protruding from the outer periphery of the straight section, the outlet flange abutting against the inner wall of the water inlet end, and the water inlet chamber being formed by the inner wall of the water inlet connector, the inner wall of the water inlet end, and the outlet flange. A further improvement is as follows: the filter cartridge has a cylindrical filter cartridge body, the circumference of which is perforated by filter holes, and the filter holes communicate with the connector chamber.

[0011] A further improvement is as follows: the support plate has a radially extending lug, the outlet flange, the lug and the inlet chamber surround to form a dirt collection chamber, the filter cartridge has a filter cartridge body and a rib extending radially from the filter cartridge body, the rib dividing the dirt collection chamber into a first dirt collection chamber located on the lower side and a second dirt collection chamber located on the upper side.

[0012] A further improvement is as follows: the inner wall of the water inlet connector is provided with a first limiting part and a second limiting part spaced apart from the first limiting part, the lug abuts against the first limiting part, and the water inlet end abuts against the second limiting part.

[0013] A further improvement is provided: an identification part is provided on the outside of the water inlet connector, and the identification part indicates the disassembly and assembly direction of the water inlet connector.

[0014] A further improvement is as follows: the water inlet is located below the water inlet connector, and the water outlet is located above the straight section.

[0015] The present invention can also solve the problems of the prior art by adopting the following technical solutions: a high-pressure cleaner, wherein the high-pressure cleaner includes the water inlet component described in any of the above-mentioned items.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The water inlet assembly's diversion device is equipped with a diversion feature. External water entering from the water inlet is guided by the diversion feature and impacts the filter cartridge in a spiral flow manner. When the external water flows through the filter cartridge, the dirt carried in the external water flow is separated and collected into the water inlet chamber, ensuring the cleanliness of the external water flow. Specifically, the diversion ribs on the diversion feature extend in a spiral manner, which allows the external water flow passing through the diversion ribs to flow in a spiral manner. The dirt carried in the water flow is thrown into the dirt collection chamber under the action of centrifugal force, reducing the probability of dirt entering the filter cartridge. When the external water flow impacts the filter cartridge, the dirt particles remaining on the filter cartridge fall off under the action of impact force, improving the water intake efficiency. The diversion device is provided with an outlet flange on the outside of the diversion outlet. When the user removes the diversion device, the outlet flange will scrape off the dirt retained in the dirt collection chamber, making it easy to clean. [Image Description]

[0017] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings:

[0018] Figure 1 This is a three-dimensional schematic diagram of the high-pressure cleaner in this invention;

[0019] Figure 2 yes Figure 1 A cross-sectional view of the high-pressure washer shown.

[0020] Figure 3 yes Figure 1 The diagram shows the internal structure of a high-pressure washer.

[0021] Figure 4 yes Figure 1 A cross-sectional view of the high-pressure washer from another perspective;

[0022] Figure 5 yes Figure 2 A three-dimensional schematic diagram of the trigger assembly of the triggering system in the high-pressure washer shown.

[0023] Figure 6 yes Figure 2 The diagram shows the trigger rod of the triggering system in the high-pressure cleaning process when it is in the first position relative to the spring piece.

[0024] Figure 7 yes Figure 6 The diagram shows the trigger rod in the second position relative to the spring in the triggering system.

[0025] Figure 8 yes Figure 7 The diagram shows the trigger rod in the third position relative to the spring in the triggering system shown.

[0026] Figure 9 yes Figure 2The diagram shows the structure of the water inlet assembly in the high-pressure washer.

[0027] Figure 10 yes Figure 9 A schematic diagram of the water inlet connector in the water inlet assembly is shown.

[0028] Figure 11 yes Figure 9 A schematic diagram of the drainage device in the water inlet assembly is shown.

[0029] Figure 12 yes Figure 11 A schematic diagram of the drainage device from another perspective;

[0030] Figure 13 yes Figure 12 A schematic diagram of the drainage features in the drainage device shown;

[0031] Figure 14 yes Figure 2 The diagram shows the structure of the protection system in the high-pressure cleaner.

[0032] Figure 15 yes Figure 14 A schematic diagram of part C in the protection system shown.

[0033] Figure 16 yes Figure 14 The diagram shows a protective system where the feet and battery pack are not fitted with protective sleeves.

[0034] Figure 17 yes Figure 14 A schematic diagram of the sheath structure in the protective system shown;

[0035] Figure 18 yes Figure 2 The diagram shows the assembly of the second vibration damping element and the spray bar system in the high-pressure cleaner.

[0036] Figure 19 yes Figure 2 A schematic diagram of the first vibration damping element in the vibration damping system of the high-pressure cleaner shown.

[0037] Figure 20 yes Figure 19 The diagram shows a structural schematic of the first vibration damping element from another perspective.

[0038] Meaning of the reference numerals in the diagram:

[0039] High-pressure washer 100, housing 1

[0040] Main body 11 Input terminal 111

[0041] Output terminal 112, ring seat 113

[0042] Mounting cavity 114 Main body plane 115

[0043] Grip 12, Foot 13

[0044] First arch rim 131; Second arch rim 132

[0045] Battery pack mounting section 133 Drive system 2

[0046] Motor assembly 21 Motor housing 211

[0047] Stator 212 Motor shaft 213

[0048] Rotor 214 Transmission assembly 22

[0049] Housing 221, Reduction Mechanism 222

[0050] Pump unit 3 Pump body 31

[0051] Pressure chamber 311 Pump body rib 312

[0052] 32 Piston 33 Pressure boosting mechanism

[0053] Inlet end 34, outlet end 35

[0054] Inlet valve 36, water circuit switch 37

[0055] First check valve 38 Second check valve 39

[0056] Trigger System 4 Trigger Assembly 41

[0057] Trigger lever 411 Pivot part 412

[0058] Trigger chamber 413 Support rib 414

[0059] Trigger lever 415, Spring mounting part 416

[0060] Spring 417, trigger axis 418

[0061] Switch 42, Switch body 421

[0062] Trigger button 422, spring 423

[0063] 423a end of spring contact 423b switch axis

[0064] First acute angle A, second acute angle B

[0065] Control System 5 Control Circuit Board 51

[0066] Operation panel 52, Operation buttons 521

[0067] First instruction area 522 Second instruction area 523

[0068] Water inlet assembly 6, water inlet 6a

[0069] Water outlet 6b, water inlet chamber 6c

[0070] Water inlet connector 61, connector chamber 611

[0071] First limiting part 612 Second limiting part 613

[0072] Threaded part 614 Marking part 615

[0073] Drainage device 62 Support plate 621

[0074] Lug 621a filter cartridge 622

[0075] Filter cartridge body 622a Filter cartridge chamber 622b

[0076] Filter hole 622c, raised rib 622d

[0077] Drainage outlet 623 Transition section 623a

[0078] Straight section 623b, exit flange 623c

[0079] Drainage feature 624, base 624a

[0080] Drainage rib 624b, first curved edge 624c

[0081] Second curved edge 624d drainage proximal end 624e

[0082] Distal drainage point 624f, drainage endpoint 624g

[0083] Sewage collection chamber 63 First sewage collection chamber 631

[0084] Episode 2, Sewage Chamber 632, Sealing Ring 64

[0085] Protection System 7 Battery Pack 71

[0086] Battery pack base 711, base boss 712

[0087] Battery pack connector 713 Base baffle 714

[0088] Battery pack button 715 Battery pack button 716

[0089] Nameplate section 717 Power display section 718

[0090] Power button 718a Power indicator light 718b

[0091] Sheath 72, Sheath Base 721

[0092] Sheath base positioning surface 721a Sheath base mating surface 721b

[0093] Sheath baffle 722, sheath baffle positioning surface 722a

[0094] Sheath baffle mating surface 722b Sheath button part 723

[0095] Sheath button hole 723a Sheath button mating surface 723b

[0096] Boom system 8 Nozzle 81

[0097] Nozzle 82, locking groove 821

[0098] Nozzle boss 822, extension 822a

[0099] Support ring 822b, boss inner cavity 823

[0100] Spray mount 83, spray mount cavity 831

[0101] Large diameter area 832 Small diameter area 833

[0102] Sprayer seat limiting part 834 Fixing device 84

[0103] 841 Snap ring; 85 Foolproof element

[0104] Vibration damping system 9 First vibration damping element 91

[0105] Vibration damping base 911, vibration damping side ring 912

[0106] Vibration damping cavity 913, vibration damping hole 914, second vibration damping element 92 [Detailed Implementation]

[0107] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "front," and "rear" that indicate orientation or positional relationship are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0108] Please see Figures 1 to 4The present invention relates to a high-pressure washer 100, which is equipped with a water inlet assembly 6. The water inlet assembly 6 can draw in external water flow and pressurize the external water flow before spraying it outward to clean vehicles, yards, ground, etc. The high-pressure washer 100 includes a housing 1, a drive system 2 installed in the housing 1, a pump unit 3 driven by the drive system 2, and a battery pack 71 that powers the drive system 2. The user can start the high-pressure washer 100 through a trigger system 4 and a control system 5.

[0109] Please continue reading. Figures 1 to 4 The housing includes a main body 11, a gripping part 12 extending from the lower end of the main body 11, and a foot 13 connected to the lower end of the gripping part 12. The drive mechanism 2 includes a motor assembly 21 and a transmission assembly 22 disposed within the main body 11. The transmission assembly 22 is connected to the lower end of the motor assembly 21, and the motor assembly 21 and the transmission assembly 22 are disposed within the main body 11. In this embodiment, the motor assembly 21 is an external rotor motor, including a motor housing 211, a stator 212 mounted on the motor housing 211, a rotor 214 connected to the motor housing 211, and a motor shaft 213 fixed to the rotor 214. The transmission assembly 22 includes a housing 221 and a reduction mechanism 222 installed inside the housing 221. The power generated by the rotation of the rotor 214 is transmitted to the reduction mechanism 22 through the motor shaft 213.

[0110] Pump unit 3 has a pump body 31 and a pressure chamber 311 formed in the pump body 31 and extending left and right. The pressure chamber 311 is the place where the pump unit 3 pressurizes the external water flow. The plunger 32 extends into the pressure chamber 311 and is connected to the pressurization mechanism 33. In this embodiment, the pressurization mechanism 33 is preferably a helical spring. The plunger 32 is driven by the deceleration mechanism 222 to reciprocate in the left and right direction. The lower end and the left end of the pump body 31 are respectively provided with an inlet end 34 and an outlet end 35. The inlet end 34 and the outlet end 35 are interconnected. The reciprocating motion of the plunger 32 can pressurize the external water flow entering from the inlet end 34 and spray it out from the outlet end 35.

[0111] The high-pressure washer 100 cannot draw in external water flow when it is stopped. It can only perform cleaning operations when the drive system 2 and pump unit 3 are operating in coordination. Starting the drive system 2 requires triggering the linkage operation of system 4 and control system 5.

[0112] Please refer to Figures 1 to 2 and Figures 5 to 6The triggering system 4 includes a trigger assembly 41 installed on the main body 11 and the grip 12, and a switch 42 installed in the grip 12. In this embodiment, the switch 42 is preferably a micro switch. Specifically, the trigger assembly 41 includes a long trigger lever 411, and a circular protruding pivot part 412 is provided at the upper end of the trigger lever 411. The trigger lever 411 is rotatably supported on the main body 11 through the pivot part 412. A trigger cavity 413 is formed on the right end face of the trigger lever 411. The interior of the trigger cavity 413 has a support rib 414 protruding from the bottom. A trigger rod 415 is integrally connected to the right end face of the support rib 414. The trigger rod 415 is cylindrical. A spring mounting part 416 is provided in the area of ​​the trigger cavity 413 below the support rib 414. The spring mounting part 416 connects the trigger lever 411 relative to the grip 12 in a restricted manner through a spring 417.

[0113] A pressing surface 411a is formed on the side of the trigger lever 411 opposite to the trigger cavity 413. The pressing surface 411a is the part that abuts against the user's palm and covers the cavity on the grip part 12 for mounting the trigger assembly 41. A hook part 419 protrudes to the left from the end of the pressing surface 411a. The hook part 419 abuts against the lower end of the user's hand to prevent the user's hand from getting caught in the gap formed between the trigger assembly 41 and the foot 13 when using the high-pressure washer 100, thereby reducing the risk of injury to the user's hand.

[0114] The switch 42 includes a switch body 421, a trigger button 422 mounted on the switch body 421, and a spring 423 connected to the switch body 421 and capable of pressing the trigger button 422. The connection part between the spring 423 and the switch body 421 is located at the lower end of the switch body 421, and the spring 423 can rotate around the connection part.

[0115] Please combine Figure 1 and Figure 2 The control system 5 includes a control circuit board 51 mounted on the upper right side of the main body 11 and an operation panel 52 electrically connected to the control circuit board 51. The operation panel 52 has an operation button 521 located at the lower end and a first indicator area 522 and a second indicator area 523 located above the operation button 521. In this embodiment, the operation button 521 is preferably a membrane switch. The first indicator area 522 is used to display the real-time power consumption during the operation of the high-pressure washer 100, and the second indicator area 523 is used to display the pressure parameters during the operation of the high-pressure washer 100.

[0116] To start the high-pressure washer 100, the user can first press the trigger lever 415 by hand to rotate it. This will cause the trigger lever 415 to rotate and press the spring 423, which in turn presses the trigger button 422 indirectly through the spring 423. When the trigger button 422 is pressed, the switch 42 transmits the pressing signal to the control circuit board 51, the display area 523 on the operation panel 52 lights up, and the machine is in standby mode.

[0117] In this embodiment, the trigger rod 415 and the spring piece 423 have the following positional relationship, please refer to Figure 6 The trigger rod 415 and the spring 423 are in their initial state. The trigger rod 415 is defined to have a trigger axis 418 and the spring 423 to have a switch axis 423b. A trigger angle A is formed between the trigger axis 418 and the switch axis 423b. The trigger angle A is an acute angle.

[0118] To further describe the process of trigger lever 415 rotating trigger switch 42, three node positions are defined in this process: the first position is referred to Figure 6 At this time, if the user does not pull the trigger lever 411, the trigger lever 415 will not rotate and will not contact the spring 423; for the second position, please refer to... Figure 7 At this point, the trigger lever 415 has rotated a certain angle under the action of the user pulling the trigger lever 411. However, at this time, the trigger lever 415 only presses against the spring 423 but does not trigger the trigger button 422; for the third position, please refer to Figure 8 At this point, the trigger lever 415 has rotated to its limit position. Under the action of the trigger lever 415, the spring 423 is pressed and rotated, and the trigger button 422 is also indirectly pressed. It should be noted that in this position, if the user applies force again, the trigger button 422 cannot be pressed further. That is to say, the trigger button 422 can only be partially pressed in the third position, the angle of rotation of the spring 423 is also small, and the end of the spring 423a will not contact the switch body 421.

[0119] Since the trigger axis 418 and the switch axis 423b form a trigger angle A, the trigger rod 415 can slide during contact with the spring 423. That is, during the transition from the second position to the third position, the end of the trigger rod 415 slides on the surface of the spring 423. This sliding triggering method of the trigger rod 415 prevents the trigger button 422 from being pressed all the way down, which can prevent the user from damaging the trigger rod 415 and the switch 42 due to excessive force, thus improving the service life of the trigger system 4. In addition, the sliding triggering of the trigger rod 415 also provides the user with a more comfortable operating experience.

[0120] After the operation panel 52 is activated, the user can press the operation button 521. At this time, the control circuit board 51 receives the start signal from the operation button 521 and can control the motor assembly 21 to start. It should be noted that the prerequisite for successfully starting the high-pressure washer 100 is that the trigger lever 411 must be kept pressed. The operation button 521 does not need to be pressed continuously after being pressed once. However, if the user releases the trigger lever 411 during use, the machine will stop. The high-pressure washer 100 completely prevents user misoperation of the machine through the two-step start-up of the trigger system 4 and the control system 5, ensuring the user's operational safety.

[0121] Transfer to Figure 2 and Figure 3 When the user pulls the trigger lever 411, the inlet valve 36 of the pump unit 3 will also open simultaneously. Specifically, a water circuit switch 37 is connected to the right end of the inlet valve 36 of the pump unit 3. The end of the water circuit switch 37 away from the inlet valve 36 abuts against the end of the trigger lever 411. When the trigger lever 411 rotates counterclockwise, the water circuit switch 37 will rotate clockwise accordingly, thereby driving the inlet valve 36 to open to the left. Furthermore, the pump unit is provided with a first check valve 38 between the inlet end 34 and the pressure chamber 311, and a second check valve 39 between the pressure chamber 311 and the outlet end 35. After the user presses the operation button 521 to start the motor assembly 21, the plunger 32 will reciprocate. During the movement of the plunger 32 to the right, the first one-way valve 38 opens and the second one-way valve 39 closes, and the external water flows into the pressure chamber 311 through the water inlet 34. The pressurizing mechanism 33 is in an energy storage state due to compression. During the movement of the plunger 32 to the left, the first one-way valve 38 closes and the second one-way valve 39 opens, the pressurizing mechanism 33 returns to its original state, and the stored energy acts on the plunger 32 to pressurize the external water flow in the pressure chamber 311, causing it to be ejected from the water outlet 35.

[0122] In this embodiment, the water inlet 34 cannot be directly connected to a water pipe that transports external water; instead, the water inlet assembly 6 must be installed to achieve the connection. Please refer to... Figure 2 , Figure 9 and Figure 10The lower end of the main body 11 is provided with an input end 111, and a water inlet end 34 protrudes from the input end 111. A water inlet connector 61 is connected to the outside of the water inlet end 34. A diversion device 62 is installed inside the water inlet connector and extends upward into the water inlet end 34. The water inlet end 34, the water inlet connector 61, and the diversion device 62 together form a water inlet assembly 6. Further, the water inlet assembly 6 forms a water inlet 6a at the lower end of the water inlet connector 61 and a water outlet 6b on the upper side of the diversion device 62. The water outlet 6b is located inside the water inlet end 34. In addition, the water inlet assembly 6 also forms a water inlet chamber 6c in the water inlet 6a and the water outlet 6b. External water flows into the water inlet chamber 6c from the water inlet 6a, flows through the interior of the diversion device 62, and finally flows out from the water outlet 6b.

[0123] Transfer to Figure 9 and Figure 10 The water inlet connector 61 has a connector chamber 611 inside. The connector chamber 611 has a connector inlet 611a, a first limiting part 612, and a second limiting part 613 arranged sequentially from bottom to top. The upper end of the connector chamber 611 has a threaded part 614, which allows the water inlet connector 61 to be detachably connected to the outside of the water inlet end 34. Furthermore, a sealing ring 64 is provided on the lower side of the threaded part 614 to achieve a seal with the water inlet end 34. The outer wall of the water inlet connector 61 is also provided with a marking part 615, which can indicate the disassembly and assembly direction of the water inlet connector 61 to the user.

[0124] Transfer to Figure 11 and Figure 12The drainage device 62 includes a disc-shaped support plate 621. Four lugs 621a extend radially from the edge of the support plate 621, and the four lugs 621a are arranged at a 90-degree angle to each other. A filter cartridge 622 is integrally connected to the upper surface of the support plate 621. The filter cartridge 622 includes a cylindrical filter cartridge body 622a. A filter cartridge chamber 622b is formed inside the filter cartridge body 622a. A plurality of filter holes 622c penetrate the outer wall of the filter cartridge body 622a. The filter holes 622c communicate with the filter cartridge chamber 622b. At the same height, the filter holes 622c are arranged in a uniformly spaced ring. Furthermore, a plurality of rings are evenly distributed on the outer wall of the filter cartridge body 622a in the vertical direction. Above the lugs 621a, the filter cartridge body 622a... The outer surface of 22a is provided with radially extending ribs 622d. There are four ribs 622d, and the included angle between them is 90 degrees. Each rib 622d has a lug 621a that is aligned with it in the vertical direction. The upper end of the filter cartridge 622 is integrally connected to the drain outlet 623. The drain outlet 623 includes a transition section 623a connected to the filter cartridge body 622a, a straight section 623b extending upward from the transition section 623a, and an outlet flange 623c extending from the outer periphery of the straight section 623b. The transition section 623a is a frustum with an inner diameter that increases from bottom to top. Its minimum inner diameter is greater than or equal to the inner diameter of the filter cartridge chamber 622b. The straight section 623b is a cylinder with a constant diameter. Its minimum inner diameter is greater than or equal to the inner diameter of the transition section 623a.

[0125] The specific installation process of the water inlet assembly 6 is described below: First, the diversion device 62 needs to be fixed inside the water inlet end 34. To do this, the diversion outlet 623 can be aligned with the water inlet end 34 and inserted, so that the outlet flange 623c abuts against the inner wall of the water inlet end 34. Then, the upper end of the water inlet connector 61 can be aligned with the lower end of the diversion device 62. After alignment, it can be moved upward to gradually cover the diversion device 62. After installation, the water inlet end 34, the water inlet connector 61 and the diversion device 62 have the following assembly relationship: the lug 621a abuts against the first limiting part 612, and the lower side of the water inlet end 34 abuts against the second limiting part 613.

[0126] Please refer to Figures 12 to 13The lower surface of the support disk 621 is provided with a drainage feature 624. The drainage feature 624 has a base 624a installed in the center of the support disk 621 and drainage ribs 624b extending spirally from the base 624a toward the edge of the support disk 621. The number of drainage ribs 624b is three and they are evenly spaced around the base 623a. Further, the drainage ribs 624b are defined by a first curved edge 624c and a second curved edge 624d. The first curved edge 624c is close to the base 623a. One end of 4a and the end of the second curved edge 624d near the base 624a combine to form the proximal drainage end 624e. The end of the first curved edge 624c away from the base 624a and the end of the second curved edge 624d away from the base 624a combine to form the distal drainage end 624f. The width of the drainage rib 624b becomes narrower from the proximal drainage end 624e to the distal drainage end 624f, until the ends of the distal drainage end 624f converge into one endpoint, which is defined as the drainage endpoint 624g.

[0127] In this embodiment, the interior of the water inlet assembly 6 forms several spaces, which will be described below. Figure 9 The water inlet chamber 6c is formed by the inner wall of the water inlet connector 61, the inner wall of the water inlet end 34, and the outlet flange 623c. That is to say, the connector chamber 611 is a component of the water inlet chamber 6c. The support plate 621, the outlet flange 623c, and the water inlet chamber 6c form a dirt collection chamber 63. Furthermore, the rib 622d divides the dirt collection chamber 63 into a first dirt collection chamber 631 located below the rib 622d and a second dirt collection chamber 632 located above the rib 622d.

[0128] The water inlet process of water inlet component 6 will be described next. Please refer to the following: Figures 9 to 13 As shown, when the external water flow is driven by the pump unit 3, it first flows into the inlet chamber 6c from the water inlet 6a. Then, the water flows upward through the guide feature 624. Since the guide rib 624b is a radially extending spiral, the external water flow will flow out from the guide end 624g along the support plate 621 in a spiral manner under the action of the guide rib 624b and impact the filter cartridge 622, thereby passing through the filter hole 622c to enter the filter cartridge. In this process, the dirt particles entrained in the water flow will be separated to the wall of the dirt collection chamber 63 due to the centrifugal force, thereby ensuring the cleanliness of the water flow.

[0129] Furthermore, even if the dirt particles are not completely separated when the water flows through the drainage feature 624, when the water flows through the filter hole 622c into the filter cartridge chamber 622b, the filter hole 622c will intercept these dirt particles. When the next round of water flow impacts the filter hole 622c, the dirt particles on the filter hole 622c will be peeled off and fall into the dirt collection chamber 63. Furthermore, the external water flow that has been separated from the dirt will flow out from the drainage outlet 623 after entering the filter cartridge chamber 622b, and finally flow to the pump body 31 through the water outlet 6b.

[0130] After the high-pressure washer 100 has been running for a period of time, a certain amount of dirt particles may accumulate on the inner wall of the dirt collection chamber 63. If the user wants to clean these dirt particles, he / she can pull down the drainage device 62. During this process, the outlet flange 622e can scrape off the dirt accumulated on the inner wall of the second dirt collection chamber 632, so that the dirt falls into the first dirt collection chamber 631 or is directly discharged from the water inlet 6a. For the dirt on the inner wall of the first dirt collection chamber 631, the user can remove the water inlet connector 61 separately for cleaning.

[0131] It is worth noting that the water discharged from the outlet 35 cannot be sprayed directly from the high-pressure washer 100; instead, it requires the use of the spray boom system 8 to achieve spraying. The spray boom system 8 will be described below. Please refer to... Figure 2 and Figure 18 The spray bar system 8 is installed at the output end 112 of the main body 11 and consists of a spray pipe 81, a nozzle 82 and a spray base 83. The spray pipe 81 extends from the output end 112 into the main body 11 and is connected to the water outlet end 35. The right end of the spray base 83 extends into the main body 11 and abuts against the main body 11 to achieve fixation. The nozzle 82 is installed on the spray base 83, and the spray pipe 81 passes through the interior of the spray base 83 and the nozzle 82.

[0132] Furthermore, the spray base 83 has a spray base cavity 831, which is divided into a large-diameter region 832 on the left and a small-diameter region 833 on the right. The inner diameter of the large-diameter region 832 is larger than that of the small-diameter region 833. A spray base limiting portion 834 extends to the left from the right end wall of the small-diameter region 833. The right end of the nozzle 82 is provided with a nozzle boss 822, which consists of an axially extending extension portion 822a and a radially extending abutment portion 822b. When the nozzle 82 is installed into the spray base 83, the extension portion 822a abuts against the small-diameter region 833, and the abutment portion 822b contacts the large-diameter region 832. The nozzle boss 822 also has an inner boss... The right end of the inner cavity 823 of the boss abuts against the outer periphery of the spray seat limiting part 834; the inner cavity 823 of the boss is provided with a boss groove 823a, and a foolproof element 85 is installed in the boss groove 823a. Specifically, the middle section of the foolproof element 85 is locked in the boss groove 823a, and the outer walls of the left and right ends of the foolproof element 85 abut against the inner cavity 823 of the boss; a fixing device 84 is provided on the outside of the nozzle boss 822. By operating the fixing device 84, the nozzle 82 can be quickly installed and released relative to the spray seat 83; after the external water flows out through the outlet end of the pump unit 3, it continues to flow into the spray pipe 81 and finally sprays out from the nozzle passage 821 in the nozzle 82.

[0133] When the user holds the high-pressure washer 100 to perform cleaning operations, the high-speed rotation of the motor assembly 21, the reciprocating motion of the plunger 32, and the jet motion of the external water after being pressurized will cause the high-pressure washer 100 to generate a large vibration. Therefore, a vibration reduction system 9 is set up to reduce the vibration transmitted to the user's hand during the operation of the machine.

[0134] Please refer to Figures 2 to 4 as well as Figures 18 to 20The vibration damping system 9 includes a first vibration damping element 91 disposed between the pump body 31 and the main body 11, and a second vibration damping element 92 disposed between the nozzle 82 and the spray pipe 81. The first vibration damping element 91 is a rubber component, including a vibration damping base 911 and a vibration damping side ring 912 extending vertically from the vibration damping base 911. The vibration damping base 911 has a vibration damping hole 914 through it, and the vibration damping side ring 912 forms a vibration damping cavity 913. The first vibration damping element 91 is positioned and installed in the following manner: the inner wall of the main body 11 forms a ring seat 113 facing the pump body 31, the ring seat 113 forms a mounting cavity 114, the pump body 31 has a pump body rib 312 protruding towards the main body 11, and the inner diameter of the mounting cavity 114 is equal to the outer diameter of the vibration damping side ring 912. The depth of the cavity 114 in the front-to-back direction is equal to the height of the first damping element 91 in the front-to-back direction. The outer diameter of the pump body rib 312 is equal to the inner diameter of the damping cavity 913. When installing the first damping element 91, the damping base 911 can be placed facing the cavity 114 first. Then, the damping side ring 912 and the inner wall of the cavity 114 can be made to abut against each other to push the first damping element 91 completely into the cavity 114. Finally, the pump body rib 312 can be inserted into the damping cavity 913 to achieve the positioning and installation of the first damping element 91. The second damping element 92 is an O-ring, which is installed in the inner cavity of the boss on the nozzle 82. The left side abuts against the left wall of the inner cavity 823 of the boss, and the right side abuts against the anti-fooling element 85. The nozzle 81 passes through its interior.

[0135] In this embodiment, there are two first damping elements 91, which are symmetrical about the main body plane 115 of the main body 11. The main body plane 115 passes through the center of the second damping element 92. Furthermore, the center of the second damping element 92 is equidistant from the centers of the two first damping elements 91, and the line connecting the centers of the three forms an isosceles triangle. In this way, the two first damping elements 91 can absorb the vibration at the motor assembly 21 and the plunger 32, and the second damping element 92 can absorb the vibration at the spray bar system 8. The damping system 9 composed of the three can effectively reduce the vibration transmitted from the machine to the user's hand and improve the user's operating comfort.

[0136] In addition to the overall vibration of the high-pressure washer 100 causing a poor user experience, the waterproofing of the battery pack 71 also poses a problem for users: when the high-pressure washer is working, the high-speed collision between the external water flow and the cleaned object causes the water to carry dirt everywhere. In this case, water will inevitably splash onto the connection between the battery pack 71 and the casing 1, affecting the service life of the battery pack 71. In addition, if the user places the high-pressure washer 100 near water or in a relatively humid environment when not using it, the water flow or moisture will inevitably damage the battery pack 71.

[0137] To improve the waterproof performance of the battery pack 71, the high-pressure cleaner 100 in this embodiment provides a protective sleeve 72 on the outside of the battery pack 71 and the foot 13, so that the battery pack 71, the foot 13 and the protective sleeve 72 are combined to form a protective system 7. Please refer to Figure 1 and Figures 14 to 17 As shown: the sheath 72 includes a hollow sheath base 721, the upper end face of the sheath base 721 is defined as the sheath base positioning surface 721a and the inner wall surface of the sheath base 721 is defined as the sheath base mating surface 721b; a sheath baffle 722 is integrally connected to the right side of the sheath base positioning surface 721a, the end face of the sheath baffle 722 facing the upper left is defined as the sheath baffle positioning surface 722a and the inner wall surface formed by the sheath baffle 722 is defined as the sheath baffle mating surface 722b; a sheath button part 723 is integrally connected to the right side of the sheath baffle 722, the sheath button part 723 extends from the upper part of the sheath baffle 722 to the lower part of the sheath base 721, the sheath button part 723 has a sheath button hole 723a through it, and the inner wall surface formed by the sheath button part 723 is defined as the sheath button mating surface 723b.

[0138] The connection between the battery pack 71 and the foot 13 is described below: The battery pack 71 has a rectangular battery pack base 711 and a base boss 712 extending upward from the battery pack base 711. A base baffle 714 is integrally connected to the upper right side of the battery pack base 711. A battery pack button 715 extends to the right of the base baffle 714 and extends downward from the base baffle 714 to the battery pack base 711. A battery button 716 is provided inside the battery button 715. The connection and release between the battery pack 71 and the foot 13 can be achieved through the battery button 716. Specifically, the upper end of the battery pack base 711 has a battery pack connecting part 713, and the foot 13 has a connecting part 713 at the bottom. A first foot flange 131 and a second foot flange 132 connected to the first foot flange 131 define a foot opening. A battery pack mounting part 133 is provided inside the foot opening. Correspondingly, a battery pack connecting part 713 is provided on the battery pack base 711. When the battery pack connecting part 713 and the battery pack mounting part 133 are coupled together, the battery pack 71 is installed on the foot 13. At this time, the battery pack base 711 and the base boss 712 abut against the first foot flange 131, and the base baffle 714 abuts against the second foot flange 132. If the user wants to remove the battery pack 71 from the foot 13, he / she can press the battery pack button 716 and apply force to remove the battery pack 71.

[0139] Furthermore, the connection relationship between the sheath 72, the foot 13, and the battery pack 71 is described. Since the sheath 72 is made of a flexible material, the user can directly install the sheath 72 onto the battery pack 71 and the outer periphery of the foot 13 by hand. When the sheath 72 is installed, the sheath base 721 abuts against the first foot flange 131, and the sheath baffle 722 abuts against the first foot flange 131 and covers the second foot flange 132.

[0140] Specifically, the sheath base positioning surface 721a abuts against the lower end of the first foot flange 131, and the sheath base mating surface 721b abuts against the circumferential surface of the battery pack base 711; furthermore, the sheath baffle positioning surface 722a abuts against the lower end of the first foot flange 131, and the sheath baffle mating surface 722b abuts against the outer periphery of the second foot flange 132; moreover, the sheath button mating surface 723b also abuts against the outer periphery of the battery pack button portion 715, causing the battery pack button 716 to protrude from the sheath button hole 723a; it is worth noting that The battery pack 71 has a nameplate 717 on the front and back sides, and a power display 718 on the right side. When the cover 72 is fixed, it will cover the upper half of the nameplate 717, but the power display 718 will not be covered. This is because the power display 718 consists of a power button 718a and a power indicator light 718b. The user can know the remaining battery life of the battery pack 71 by pressing the power button 718a. If the cover 72 covers the power display 718b, it will reduce the user's operating experience of the high-pressure washer 100.

[0141] In this embodiment, the protective system 7, consisting of the sheath 72, the battery pack 71, and the foot 13, can effectively prevent splashing of external moisture and improve the service life of the battery pack 71. Furthermore, the sheath 72 has a wide range of applications and is suitable for any DC power tool. Moreover, the sheath 72 has a simple structure and is relatively easy to manufacture, so its cost is relatively low.

[0142] This invention is not limited to the specific embodiments described above. Those skilled in the art will readily understand that many alternative solutions exist for the water inlet assembly and high-pressure cleaner of this invention without departing from the principles and scope thereof. The scope of protection of this invention is defined by the claims.

Claims

1. A water inlet assembly, comprising a water inlet end, a water inlet connector connected to the water inlet end, and a diversion device installed within the water inlet connector, the water inlet assembly having a water inlet portion and a water outlet portion disposed on both sides, and a water inlet chamber located between the water inlet portion and the water outlet portion, wherein external water flows in from the water inlet portion, flows through the diversion device, and exits from the water outlet portion; characterized in that: The diversion device has a support plate near the water inlet, a filter cylinder extending from one end face of the support plate, and a diversion feature disposed on the other end face of the support plate. The diversion feature extends downward from the side of the support plate away from the filter cylinder. The diversion feature has a base installed in the center of the support plate and a diversion rib extending spirally from the base toward the edge of the support plate. External water entering from the water inlet is guided by the flow-guiding feature and impacts the filter cartridge in a spiral flow manner. The external water flows through the filter cartridge, and the dirt carried in the external water flow is separated and collected into the water inlet chamber.

2. The water inlet assembly according to claim 1, characterized in that: The drainage rib is formed by a first curved edge and a second curved edge that is opposite to the first curved edge.

3. The water inlet assembly according to claim 2, characterized in that: The ends of the first curved edge near the base and the ends of the second curved edge near the base form a proximal drainage end, and the ends of the first curved edge away from the base and the ends of the second curved edge away from the base form a distal drainage end. The width of the drainage rib decreases from the proximal drainage end to the distal drainage end.

4. The water inlet assembly according to claim 3, characterized in that: The distal ends of the drainage converge into one endpoint.

5. The water inlet assembly according to claim 1, characterized in that: The drainage device has a drainage outlet connected to the filter cartridge. The drainage outlet includes a transition section connected to the filter cartridge, a straight section extending from the transition section, and an outlet flange protruding from the outer periphery of the straight section. The outlet flange abuts against the inner wall of the water inlet end. The water inlet chamber is formed by the inner wall of the water inlet connector, the inner wall of the water inlet end, and the outlet flange.

6. The water inlet assembly according to claim 5, characterized in that: The support plate has a radially extending lug, the outlet flange, the lug and the inlet chamber surround to form a dirt collection chamber, the filter cartridge has a filter cartridge body and a rib extending radially from the filter cartridge body, the rib dividing the dirt collection chamber into a first dirt collection chamber located on the lower side and a second dirt collection chamber located on the upper side.

7. The water inlet assembly according to claim 6, characterized in that: The inner wall of the water inlet connector is provided with a first limiting part and a second limiting part spaced apart from the first limiting part. The lug abuts against the first limiting part, and the water inlet end abuts against the second limiting part.

8. The water inlet assembly according to claim 7, characterized in that: The water inlet connector is provided with an identification part on its outer side, which indicates the direction of disassembly and assembly of the water inlet connector.

9. The water inlet assembly according to claim 8, characterized in that: The water inlet is located below the water inlet connector, and the water outlet is located above the straight section.

10. A high-pressure cleaner, characterized in that: The high-pressure cleaner includes the water inlet assembly as described in any one of claims 1 to 9.

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