Protection system and electric tool

Abstract

The utility model relates to a protection system and an electric tool. The protection system is applied to the electric tool. The protection system comprises a machine shell and a battery pack detachably connected to the machine shell, the machine shell is provided with a foot sole, the bottom of the foot sole is provided with a first foot sole flange and a second foot sole flange extending downwards from the inner side of the first foot sole flange, and the battery pack is provided with a battery pack base and a base baffle connected to the battery pack base. The protection system comprises a sheath arranged on the periphery of the battery pack, the sheath comprises a sheath base and a sheath baffle connected to the upper end of the sheath base, the sheath base abuts against the first sole flange, and the sheath baffle abuts against the first sole flange and wraps the second sole flange. By arranging the protection system, the waterproof performance of the electric tool can be improved, and safe operation is facilitated.

Description

[Technical field]

[0001] The utility model relates to the technical field of electric tools, in particular to a protection system and an electric tool using the protection system. [Background Technology]

[0002] Power tools are tools that use a power source to power the motor components to operate. In DC power tools, the power source is a battery pack. In daily life, DC power tools equipped with battery packs are popular among users because they are easy to carry and have high operating efficiency.

[0003] However, existing battery packs are generally directly plugged into the casing of power tools without any waterproof facilities. If the user places the power tool near water or in a humid environment after use, there is a high probability that water will enter the battery pack, thereby affecting the service life of the battery pack. In severe cases, the battery pack may leak and endanger the safety of the user.

[0004] In view of this, it is determined that it is necessary to provide an improved protection system and power tool to overcome the deficiencies of the prior art. [Contents of the utility model]

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a protection system and an electric tool using the protection system, wherein the protection system can enable the electric tool to have advantages such as good waterproof performance and safe operation by users.

[0006] The utility model solves the problems of the prior art by adopting the following technical solutions: a protection system, the protection system includes a casing and a battery pack detachably connected to the casing, the casing is provided with a sole, the bottom of the sole is provided with a first sole flange and a second sole flange extending downward from the inner side of the first sole flange, the battery pack has a battery pack base and a base baffle connected to the battery pack base, the protection system includes a sheath arranged on the periphery of the battery pack, the sheath includes a sheath base and a sheath baffle connected to the upper end of the sheath base, the sheath base abuts against the first sole flange, and the sheath baffle abuts against the first sole flange and covers the second sole flange.

[0007] A further improvement is as follows: a sheath base positioning surface is provided at the upper end of the sheath base, the inner wall of the sheath base forms a sheath base engaging surface, the sheath base positioning surface abuts against the lower end of the first sole flange, and the sheath base engaging surface abuts against the peripheral surface of the battery pack base.

[0008] A further improvement is as follows: the sheath baffle has a sheath baffle positioning surface and a sheath baffle joint surface, the sheath baffle positioning surface abuts against the lower end of the first sole flange, and the sheath baffle joint surface abuts against the outer periphery of the second sole flange.

[0009] A further improvement scheme is: the base baffle is provided with a battery pack button portion at the end, the sheath baffle extends to the right with a sheath button portion, the inner wall of the sheath button portion forms a sheath button joint surface, and the sheath button joint surface abuts against the outer periphery of the battery pack button portion.

[0010] A further improvement is as follows: the battery pack button portion is provided with a battery pack button, the sheath button portion is penetrated by a sheath button hole, and the battery pack button is exposed from the sheath button hole.

[0011] A further improvement is as follows: the battery pack is provided with a nameplate portion on the front and rear sides of the battery pack base, and the nameplate portion is at least partially shielded by the protective sheath base.

[0012] A further improvement is as follows: a power display portion is provided on the right end face of the battery pack base, and the sheath button portion does not cover the power display portion.

[0013] A further improvement is: the power display unit includes a power button and a power indicator light connected to the power button, and the power display light indicates the remaining power of the battery pack.

[0014] A further improvement is as follows: the sole of the foot is provided with a battery pack mounting portion, the battery pack is provided with a battery pack connecting portion, and the battery pack mounting portion and the battery pack connecting portion are adapted to each other.

[0015] The present invention can also adopt the following technical solution to solve the problems of the prior art: an electric tool, which includes the protection system described in any one of the above items.

[0016] Compared with the prior art, the utility model has the following beneficial effects: a protective cover is arranged on the outside of the battery pack and the casing sole, which can prevent the electric tool from being penetrated by external moisture in water conditions or water-adjacent environments, thereby increasing the service life of the machine. Specifically: the protective cover base abuts against the first sole flange, the protective cover baffle abuts against the first sole flange and covers the second sole flange, so that the gap between the protective cover, the battery pack and the sole is completely covered, and the intervention of external water flow is eliminated; the protective cover is composed of a protective cover base and a protective cover baffle, and its structure is simple and easy to manufacture, which can reduce production costs when used on a large scale; when the protective cover is installed on the battery pack, the power display part will not be blocked, which is beneficial for the user to observe the usage status of the battery pack in real time, and can improve the user's operating experience. [Drawings]

[0017] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings:

[0018] Figure 1 It is a three-dimensional schematic diagram of the electric tool in a preferred embodiment of the utility model;

[0019] Figure 2 yes Figure 1 a cross-sectional view of the power tool shown;

[0020] Figure 3 yes Figure 1 A schematic diagram of the internal structure of the electric tool shown;

[0021] Figure 4 yes Figure 1 A cross-sectional view of the electric tool from another perspective;

[0022] Figure 5 yes Figure 2 A three-dimensional schematic diagram of a trigger assembly of a trigger system in the electric tool shown;

[0023] Figure 6 yes Figure 2 A schematic diagram of a trigger rod of a trigger system in the electric tool shown in FIG. 1 when the trigger rod is in a first position relative to the spring sheet;

[0024] Figure 7 yes Figure 6 A schematic diagram of the trigger system when the trigger rod is in the second position relative to the spring;

[0025] Figure 8 yes Figure 7 A schematic diagram of the trigger system when the trigger rod is in a third position relative to the spring;

[0026] Fig. 9 yes Figure 2 A schematic diagram of the structure of a water inlet assembly in the electric tool shown;

[0027] Fig.10 yes Fig. 9 A schematic diagram of the structure of the water inlet joint in the water inlet assembly shown;

[0028] Fig.11 yes Fig. 9 A schematic diagram of the structure of the drainage device in the water inlet assembly shown;

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

[0030] Fig.13 yes Fig.12 A schematic diagram of the structure of the drainage feature in the drainage device shown;

[0031] Fig.14 yes Figure 2 A schematic diagram of the structure of the protection system in the electric tool shown;

[0032] Fig.15 yes Fig.14 The schematic diagram of the structure of part C in the protection system shown;

[0033] Fig.16 yes Fig.14 A schematic diagram of the structure of the protection system shown in FIG. 1 without installing a sheath on the sole of the foot and the battery pack;

[0034] Fig.17 yes Fig.14 A schematic diagram of the structure of the sheath in the protection system shown;

[0035] Fig.18 yes Figure 2 A schematic diagram of the assembly of a second vibration reduction element and a spray bar system of the vibration reduction system in the electric tool shown;

[0036] Fig.19 yes Figure 2 A schematic structural diagram of a first vibration reduction element of a vibration reduction system in the electric tool shown;

[0037] Fig. 20 yes Fig.19 A schematic structural diagram of the first damping element from another perspective is shown.

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

[0039] Power Tools / High Pressure Cleaner 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 Sole 13

[0044] First sole flange 131 Second sole flange 132

[0045] Battery pack installation part 133 Drive system 2

[0046] Motor assembly 21 Motor housing 211

[0047] Stator 212 Motor shaft 213

[0048] Rotor 214 Transmission assembly 22

[0049] Box shell 221 Speed ​​reduction mechanism 222

[0050] Pump unit 3 Pump body 31

[0051] Pressure chamber 311 Pump body rib 312

[0052] Plunger 32 Pressure booster 33

[0053] Water inlet 34 Water outlet 35

[0054] Water inlet valve 36 Water circuit switch 37

[0055] First one-way valve 38 Second one-way valve 39

[0056] Trigger system 4 Trigger assembly 41

[0057] Trigger lever 411 Pivot portion 412

[0058] Trigger chamber 413 Support rib 414

[0059] Trigger rod 415 Spring mounting portion 416

[0060] Spring 417 Trigger axis 418

[0061] Switch 42 Switch body 421

[0062] Trigger button 422 Shrapnel 423

[0063] Shrapnel end 423a Switch axis 423b

[0064] First acute angle A Second acute angle B

[0065] Control system 5 Control circuit board 51

[0066] Operation panel 52 Operation button 521

[0067] First indication area 522 Second indication 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] The first limiting portion 612 The second limiting portion 613

[0072] Threaded portion 614 Marking portion 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 convex rib 622d

[0077] Drainage outlet 623 Transition section 623a

[0078] Straight section 623b Outlet 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] Drainage distal end 624f Drainage endpoint 624g

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

[0084] Second sewage collecting chamber 632 Sealing ring 64

[0085] Protection system 7 Battery pack 71

[0086] Battery pack base 711 Base boss 712

[0087] Battery pack connection part 713 Base baffle 714

[0088] Battery pack button portion 715 Battery pack button 716 Nameplate part 717 Power display part 718

[0089] Power button 718a Power indicator light 718b

[0090] Sheath 72 Sheath base 721

[0091] Sheath base positioning surface 721a Sheath base engagement surface 721b

[0092] Sheath baffle 722 Sheath baffle positioning surface 722a

[0093] Sheath baffle joint surface 722b Sheath button portion 723

[0094] Sheath button hole 723a Sheath button engagement surface 723b

[0095] Boom system 8 Nozzle 81

[0096] Nozzle 82 Stop groove 821

[0097] Spray head boss 822 extension 822a

[0098] Abutment ring 822b Boss cavity 823

[0099] Spray seat 83 Spray seat cavity 831

[0100] Large diameter area 832 Small diameter area 833

[0101] Spray seat limiter 834 fixing device 84

[0102] Clamp 841 Anti-fool element 85

[0103] Damping system 9 First damping element 91

[0104] Vibration-damping base 911 Vibration-damping side ring 912

[0105] Vibration reduction cavity 913 Vibration reduction hole 914

[0106] Second damping element 92 [Specific implementation method]

[0107] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. For example, the words "upper", "lower", "front", "back", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present 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 cannot be understood as limiting the present invention.

[0108] See also Figures 1 to 4 An embodiment of the utility model relates to an electric tool 100, which is equipped with a protection system 7. In this embodiment, the electric tool 100 is preferably a high-pressure cleaner 100, which is suitable for pressurizing an external water flow and spraying it outward to clean vehicles, courtyards, floors, etc.; the high-pressure cleaner 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 for supplying energy to the drive system 2, wherein the pump unit 3 is started by a trigger system 4 and a control system 5 to absorb an external water source for cleaning operations, and the protection system 7 can prevent external water from entering the battery pack 71 and causing damage.

[0109] Please continue reading Figures 1 to 4The housing includes a main body 11, a gripping portion 12 extending from the lower end of the main body 11, and a sole 13 connected to the lower end of the gripping portion 12. The driving mechanism 2 includes a motor assembly 21 and a transmission assembly 22 arranged in 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 arranged in the main body 11. In this embodiment, the motor assembly 21 is an outer rotor motor, including a motor housing 211, a stator 212 installed in 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 box shell 221 and a reduction mechanism 222 installed in the box shell 221. The power generated by the rotation of the rotor 214 is transmitted to the reduction mechanism 22 through the motor shaft 213.

[0110] The 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 boosting mechanism 33. In the present embodiment, the boosting mechanism 33 is preferably a coil spring; the plunger 32 is driven by the reduction mechanism 222 to make reciprocating motion in the left and right directions; the lower end and the left end of the pump body 31 are respectively provided with a water inlet end 34 and a water outlet end 35, which are connected to each other. The reciprocating motion of the plunger 32 can pressurize the external water flow entering from the water inlet end 34 and then spray it outward from the water outlet end 35.

[0111] The high-pressure cleaning machine 100 cannot absorb external water flow when it is stopped, and can only perform cleaning operations under the coordinated operation of the driving system 2 and the pump unit 3. Starting the driving system 2 requires the linkage operation of the triggering system 4 and the control system 5.

[0112] Please refer to Figure 1 to Figure 2 and Figure 5 to Figure 6 The trigger system 4 includes a trigger assembly 41 installed on the main body 11 and the gripping portion 12, and a switch 42 installed in the gripping portion 12. In this embodiment, the switch 42 is preferably a micro switch; specifically, the trigger assembly 41 includes a long strip-shaped trigger rod 411, and a circular protruding pivot portion 412 is provided at the upper end of the trigger rod 411, and the trigger rod 411 is rotatably supported on the main body 11 through the pivot portion 412; a trigger cavity 413 is formed on the right end surface of the trigger rod 411, and the interior of the trigger cavity 413 has a supporting rib 414 protruding from the bottom, and the right end surface of the supporting rib 414 is integrally connected with a trigger rod 415, and the trigger rod 415 is cylindrical; a spring mounting portion 416 is provided in the trigger cavity 413 area on the lower side of the supporting rib 414, and the spring mounting portion 416 connects the trigger rod 411 to the gripping portion 12 in a restricted manner through a spring 417.

[0113] A pressing surface 411a is formed on the trigger rod 411 on the side opposite to the trigger cavity 413. The pressing surface 411a is the portion that contacts the palm of the user and covers the cavity on the grip 12 for mounting the trigger assembly 41. A hook portion 419 protrudes to the left at the end of the pressing surface 411a, and the hook portion 419 contacts the lower end of the user's hand to prevent the user's hand from being caught in the gap formed between the trigger assembly 41 and the sole 13 when using the high-pressure cleaner 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 installed 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 portion 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 portion.

[0115] Please combine Figure 1 and Figure 2 The control system 5 includes a control circuit board 51 installed 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 indication area 522 and a second indication area 523 located above the operation button 521. In this embodiment, the operation button 521 is preferably a membrane switch. The first indication area 522 is used to display the real-time power of the high-pressure cleaning machine 100 during operation, and the second indication area 523 is used to display the pressure parameters of the high-pressure cleaning machine 100 during operation.

[0116] To start the high-pressure cleaning machine 100, the user can first press the trigger rod 415 by hand to make it rotate, thereby driving the trigger rod 415 to rotate and at the same time causing the trigger rod 415 to press against the spring piece 423, and indirectly pressing the trigger button 422 through the spring piece 423. When the trigger button 422 is pressed, the switch 42 transmits the pressing signal to the control circuit board 51, and 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 423 have the following positional relationship, please refer to Figure 6 The trigger rod 415 and the spring piece 423 are shown in an initial state, and the trigger rod 415 is defined to have a trigger axis 418 and the spring piece 423 has a switch axis 423b, and a trigger angle A is formed between the trigger axis 418 and the switch axis 423b, and the trigger angle A is an acute angle.

[0118] To further describe the process of the trigger rod 415 rotating the trigger switch 42, three node positions are defined in this process: the first position is shown in FIG. Figure 6 At this time, the user does not pull the trigger rod 411, the trigger rod 415 does not rotate, and does not contact the spring 423; please refer to the second position Figure 7 At this time, the trigger rod 415 has rotated to a certain angle driven by the user pulling the trigger rod 411. However, at this time, the trigger rod 415 only presses against the spring 423 but does not trigger the trigger button 422. Please refer to the third position Figure 8 At this time, the trigger rod 415 has rotated to the extreme position. Under the action of the trigger rod 415, the spring piece 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 can no longer be pressed further. In other words, the trigger button 422 can only be partially pressed in the third position, and the rotation angle of the spring piece 423 is also small, and the end 423a of the spring piece 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 move in a sliding manner during the contact with the spring sheet 423, that is, in the process from the second position to the third position, the end of the trigger rod 415 slides on the surface of the spring sheet 423; the sliding triggering of the trigger rod 415 makes it impossible to press the trigger button 422 to the bottom, which can prevent the user from damaging the trigger rod 415 and the switch 42 due to excessive force, thereby increasing the service life of the trigger system 4, and the sliding triggering of the trigger rod 415 will also give the user a more comfortable operating experience.

[0120] After the operation panel 52 is activated, the user can press the operation button 521 by hand. 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 cleaning machine 100 is that the trigger rod 411 must be in a pressed state, and the operation button 521 does not need to be pressed continuously after being pressed once. However, if the user releases the trigger rod 411 during use, the machine will stop. The high-pressure cleaning machine 100 completely prevents users from operating the machine incorrectly through the two-step start of the trigger system 4 and the control system 5, ensuring the user's operating safety.

[0121] Go to Figure 2 and Figure 3When the user pulls the trigger lever 411, the water inlet valve 36 of the pump unit 3 will be opened synchronously. Specifically, the pump unit 3 is connected to a water circuit switch 37 at the right end of the water inlet valve 36, and one end of the water circuit switch 37 away from the water 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 water inlet valve 36 to open to the left; further, the pump unit is provided with a first one-way valve 38 between the water inlet end 34 and the pressure chamber 311, and a second one-way valve 39 between the pressure chamber 311 and the water outlet end 35. ; After the user presses the operation button 521 to start the motor assembly 21, the plunger 32 will then reciprocate. During the movement of the plunger 32 to the right, the first one-way valve 38 opens, the second one-way valve 39 closes, and the external water flows into the pressure chamber 311 through the water inlet end 34. The boosting 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, the second one-way valve 39 opens, and the boosting mechanism 33 is restored. The stored energy acts on the plunger 32 to pressurize the external water flow in the pressure chamber 311, causing it to spray out from the water outlet end 35.

[0122] In this embodiment, the water inlet end 34 cannot be directly used to connect to the water pipe that conveys external water flow, but needs to install the water inlet assembly 6 to achieve the connection. Figure 2 , Fig. 9 and Fig.10 The lower end of the main body 11 is provided with an input end 111, the water inlet end 34 is exposed from the input end 111, the outer side of the water inlet end 34 is connected with a water inlet joint 61, the drainage device 62 is installed inside the water inlet joint and extends upward into the water inlet end 34, and the water inlet end 34, the water inlet joint 61 and the drainage device 62 together constitute the water inlet assembly 6. Further, the water inlet assembly 6 forms a water flow inlet portion 6a at the lower end of the water inlet joint 61, and a water flow outlet portion 6b is formed on the upper side of the drainage device 62, and the water flow outlet portion 6b is located inside the water inlet end 34, and the water inlet assembly 6 also forms a water inlet chamber 6c at the water flow inlet portion 6a and the water flow outlet portion 6b, and the external water flows into the water inlet chamber 6c from the water flow inlet portion 6a, flows through the interior of the drainage device 62, and finally flows out from the water flow outlet portion 6b.

[0123] Go to Fig. 9 and Fig.10A joint chamber 611 is formed inside the water inlet joint 61, and the joint chamber 611 is provided with a joint water inlet 611a, a first limiting portion 612, and a second limiting portion 613 from bottom to top; a threaded portion 614 is provided at the upper end of the joint chamber 611, and the threaded portion 614 can make the water inlet joint 61 detachably connected to the outer side of the water inlet end 34; and, on the lower side of the threaded portion 614, a sealing ring 64 is provided on the water inlet joint 61 to achieve sealing with the water inlet end 34; the outer wall of the water inlet joint 61 is also provided with an identification portion 615, and the identification portion 615 can indicate the disassembly and assembly direction of the water inlet joint 61 for the user.

[0124] Go to Fig.11 and Fig.12 , the drainage device 62 includes a disc-shaped support plate 621, and the support plate 621 has four lugs 621a extending radially from the edge, and the four lugs 621a are arranged at an angle of 90 degrees to each other; the upper surface of the support plate 621 is integrally connected with a filter cartridge 622, and the filter cartridge 622 includes a cylindrical filter cartridge body 622a, and the interior of the filter cartridge body 622a forms a filter cartridge chamber 622b, and the outer wall surface of the filter cartridge body 622a is penetrated by a plurality of filter holes 622c, and the filter holes 622c are connected to the filter cartridge chamber 622b. At the same height, the filter holes 622c are combined in a uniformly spaced manner to form a ring, and the outer wall surface of the filter cartridge body 622a is uniformly distributed with a plurality of rings in the up and down directions; at the upper part of the lug 621a, the filter cartridge body 6 The outer surface of filter cartridge 22a is provided with radially extending ribs 622d, the number of ribs 622d is four and the angle between them is 90 degrees, and each rib 622d can find a lug 621a aligned with it in the up and down directions; the upper end of filter cartridge 622 is integrally connected with drainage outlet 623, drainage outlet 623 includes a transition section 623a connected to filter cartridge body 622a, a straight section 623b extending upward from transition section 623a and an outlet flange 623c extending from the outer periphery of straight section 623b; transition section 623a is a truncated cone with increasing inner diameter from bottom to top, and its minimum inner diameter is greater than or equal to the inner diameter of filter cartridge chamber 622b, and straight section 623b is a cylinder of equal diameter, and its minimum inner diameter is greater than or equal to the inner diameter of transition section 623a.

[0125] Next, the specific installation process of the water inlet component 6 is described: first, the drainage device 62 needs to be fixed to the water inlet end 34. To this end, the drainage 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 joint 61 can be aligned with the lower end of the drainage device 62. After alignment, it can be moved upward to gradually cover the drainage device 62; after the installation is completed, the water inlet end 34, the water inlet joint 61 and the drainage device 62 have the following assembly relationship, the lug 621a abuts against the first limit portion 612, and the lower side of the water inlet end 34 abuts against the second limit portion 613.

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

[0127] In this embodiment, a plurality of spaces are formed inside the water inlet assembly 6. These spaces are described below. Fig. 9 The water inlet chamber 6c is formed by the inner wall of the water inlet joint 61, the inner wall of the water inlet end 34 and the outlet flange 623c, that is, the joint 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 are formed to form the sewage collecting chamber 63, and the rib 622d divides the sewage collecting chamber 63 into a first sewage collecting chamber 631 located at the lower side of the rib 622d and a second sewage collecting chamber 632 located at the upper side of the rib 622d.

[0128] Next, the water inlet process of the water inlet component 6 is described. Figures 9 to 13 As shown, when the external water flow first flows into the water inlet chamber 6c from the water inlet 6a under the action of the pump unit 3, then the water flows upstream through the drainage feature 624. Since the drainage rib 624b is a radially extending spiral, the external water flow will flow out from the drainage end point 624g along the support plate 621 and impact the filter cartridge 622 in a spiral flow manner under the action of the drainage rib 624b, 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 collecting chamber 63 due to the action of 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 stains, and when the next round of water flow hits the filter hole 622c, the stains on the filter hole 622c will be peeled off and fall into the dirt collecting chamber 63; further, the external water flow from which the dirt has been separated 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 flow outlet portion 6b.

[0130] After the high-pressure cleaning machine 100 has been running for a period of time, a certain amount of dirt particles may accumulate on the inner wall of the dirt collecting chamber 63. If the user wants to clean these stains, the drainage device 62 can be pulled downward. During this process, the outlet flange 622e can scrape off the stains accumulated on the inner wall of the second dirt collecting chamber 632, so that the stains fall into the first dirt collecting chamber 631 or directly disperse from the water inlet 6a. For the stains on the inner wall of the first dirt collecting chamber 631, the user can remove the water inlet connector 61 separately to clean them.

[0131] It is worth noting that the water discharged from the water outlet 35 cannot be sprayed directly from the high pressure cleaning machine 100, but needs to be sprayed with the help of the spray rod system 8. The spray rod system 8 is described below. Figure 2 and Fig.18 The spray rod system 8 is installed at the output end 112 of the main body 11, and is composed of a spray pipe 81, a spray head 82 and a spray seat 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 seat 83 extends into the main body 11 and abuts against the main body 11 to achieve fixation. The spray head 82 is installed on the spray seat 83, and the spray pipe 81 passes through the inside of the spray seat 83 and the spray head 82.

[0132] Furthermore, the nozzle seat 83 is formed with a nozzle seat cavity 831, and the nozzle seat cavity 831 is divided into a large diameter area 832 located on the left and a small diameter area 833 located on the right, the inner diameter of the large diameter area 832 is larger than the inner diameter of the small diameter area 833, and the right end wall surface of the small diameter area 833 extends to the left with a nozzle seat limiting portion 834; the right end of the nozzle 82 is provided with a nozzle boss 822, and the nozzle boss 822 is composed of an axially extending extension portion 822a and a radially extending abutting portion 822b. When the nozzle 82 is installed in the nozzle seat 83, the extension portion 822a abuts against the small diameter area 833, and the abutting portion 822b contacts the large diameter area 832; the nozzle boss 822 is also formed with a boss inner Cavity 823, the right end of the boss cavity 823 abuts against the periphery of the nozzle seat limiting portion 834; the boss cavity 823 is provided with a boss groove 823a, and an anti-fool element 85 is installed in the boss groove 823a. Specifically, the middle section of the anti-fool element 85 is clamped in the boss groove 823a, and the outer walls of the left and right ends of the anti-fool element 85 abut against the boss cavity 823; a fixing device 84 is provided on the outer side of the nozzle boss 822, and by operating the fixing device 84, the nozzle 82 can be quickly installed and released relative to the nozzle seat 83; after the external water flows out through the water outlet end of the pump unit 3, it continues to flow into the nozzle pipe 81, and is finally sprayed out from the nozzle passage 821 in the nozzle 82.

[0133] When the user holds the high-pressure cleaner 100 for cleaning operations, the high-speed rotation of the motor assembly 21, the reciprocating motion of the plunger 32, and the spraying motion of the external water after being pressurized will cause the high-pressure cleaner 100 to produce large vibrations. Therefore, a vibration reduction system 9 is provided to reduce the vibration transmitted to the user's hands during the operation of the machine.

[0134] Please refer to Figures 2 to 4 as well as Figures 18 to 20The vibration reduction system 9 includes a first vibration reduction element 91 arranged between the pump body 31 and the main body 11 and a second vibration reduction element 92 arranged between the nozzle 82 and the nozzle 81; the first vibration reduction element 91 is a rubber member, including a vibration reduction base 911, a vibration reduction side ring 912 extending vertically from the vibration reduction base 911, the vibration reduction base 911 is penetrated by a vibration reduction hole 914, and the vibration reduction side ring 912 is formed with a vibration reduction cavity 913; the first vibration reduction element 91 is positioned and installed in the following manner: an inner wall of the main body 11 is formed with a ring seat 113 toward the pump body 31, the ring seat 113 forms an installation cavity 114, the pump body 31 is protruded with a pump body rib 312 toward the main body 11, the inner diameter of the installation cavity 114 is equal to the outer diameter of the vibration reduction side ring 912, and the installation The depth of the mounting cavity 114 in the front-to-back direction is equal to the overall height of the first vibration damping element 91 in the front-to-back direction, and the outer diameter of the pump body rib 312 is equal to the inner diameter of the vibration damping cavity 913. When installing the first vibration damping element 91, the vibration damping base 911 can be placed toward the mounting cavity 114 first, and then the vibration damping side ring 912 and the inner wall of the mounting cavity 114 can be abutted to push the first vibration damping element 91 completely into the mounting cavity 114, and finally the pump body rib 312 can be inserted into the vibration damping cavity 913 to achieve the positioning and installation of the first vibration damping element 91; the second vibration damping element 92 is an O-ring, which is installed in the boss cavity on the nozzle 82, with the left side abutting against the left wall of the boss cavity 823 and the right side abutting against the fool-proof element 85, and the interior of the ring is for the nozzle 81 to pass through.

[0135] In the present embodiment, there are two first vibration-damping elements 91, which are symmetrical front to back about the main plane 115 of the main body 11, and the main plane 115 passes through the center of the second vibration-damping element 92; further, the center of the second vibration-damping element 92 is equidistant from the center of the two first vibration-damping elements 91, and the center line of the three forms an isosceles triangle; in this way, the two first vibration-damping elements 91 can absorb the vibration of the motor assembly 21 and the plunger 32, and the second vibration-damping element 92 can absorb the vibration of the spray rod system 8. The vibration-damping system 9 composed of the three can effectively weaken the vibration transmitted from the machine to the user's hands, thereby improving the user's operating comfort.

[0136] In addition to the vibration of the entire high-pressure cleaner 100 causing a bad experience for users, the waterproof problem of the battery pack 71 will also cause trouble to users: when the high-pressure cleaner is working, the external water flow and the object to be cleaned will collide at high speed, causing the water flow to carry stains and splash everywhere. In this case, the water flow will inevitably splash onto the connection between the battery pack 71 and the casing 1, affecting the use status of the battery pack 71; in addition, if the user places the high-pressure cleaner 100 near water or in a relatively humid environment when not in use, the water flow or moisture will inevitably cause damage to the battery pack 71.

[0137] In order to improve the waterproof performance of the battery pack 71, the high pressure cleaning machine 100 in this embodiment is provided with a sheath 72 on the outside of the battery pack 71 and the sole 13, so that the battery pack 71, the sole 13 and the sheath 72 are combined to form a protection 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 surface 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 joint surface 721b; the right side of the sheath base positioning surface 721a is integrally connected with a sheath baffle 722 upward, the end surface 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 joint surface 722b; the right side of the sheath baffle 722 is integrally connected with a sheath button part 723, 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 is penetrated by a sheath button hole 723a, and the inner wall surface formed by the sheath button part 723 is defined as the sheath button joint surface 723b.

[0138] Next, the connection between the battery pack 71 and the sole 13 is described: the battery pack 71 has a rectangular battery pack base 711 and a base boss 712 extending upward from the battery pack base 711. On the upper right side of the battery pack base 711, a base baffle 714 is integrally connected thereto, and a battery pack button portion 715 extends to the right from the base baffle 714, and the battery pack button portion 715 extends downward from the base baffle 714 to the battery pack base 711; a battery plate button 716 is provided in the battery pack button portion 715, and the connection and release between the battery pack 71 and the sole 13 can be achieved through the battery pack button 716. Specifically, a battery pack connecting portion 713 is provided at the upper end of the battery pack base 711, and a battery pack connecting portion 713 is provided at the bottom of the sole 13. The first sole flange 131 and the second sole flange 132 connected to the first sole flange 131 define a sole opening, and a battery pack mounting portion 133 is arranged in the sole opening. Correspondingly, a battery pack connecting portion 713 is provided on the battery pack base 711. When the battery pack connecting portion 713 and the battery pack mounting portion 133 are coupled together, the battery pack 71 is installed to the sole 13. At this time, the battery pack base 711 and the base boss 712 abut against the first sole flange 131, and the base baffle 714 abuts against the second sole flange 132. If the user wants to remove the battery pack 71 from the sole 13, the user 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 sole 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 to the battery pack 71 and the periphery of the sole 13 by hand. When the sheath 72 is installed, the sheath base 721 abuts against the first sole flange 131, and the sheath baffle 722 abuts against the first sole flange 131 and covers the second sole flange 132.

[0140] Specifically, the sheath base positioning surface 721a abuts against the lower end of the first sole flange 131, and the sheath base joint surface 721b abuts against the peripheral surface of the battery pack base 711; and the sheath baffle positioning surface 722a abuts against the lower end of the first sole flange 131, and the sheath baffle joint surface 722b abuts against the outer periphery of the second sole flange 132; not only that, the sheath button joint surface 723b also abuts against the outer periphery of the battery pack button portion 715, so that the battery pack button 716 is exposed from the sheath button hole 723a; it is worth noting that The front and rear sides of the battery pack 71 are provided with nameplate portions 717, and the right side of the battery pack 71 is provided with a power display portion 718. When the sheath 72 is fixed, the upper half of the nameplate portion 717 will be covered, while the power display portion 718 will not be covered. This is because the power display portion 718 is composed of a power button 718a and a power indicator light 718b. The user presses the power button 718a to know the remaining battery life of the battery pack 71. If the sheath 72 covers the power display portion 718b, the user's operating experience of the high-pressure cleaning machine 100 will be reduced.

[0141] In this embodiment, the protection system 7 composed of the sheath 72, the battery pack 71 and the sole 13 can effectively prevent the splashing of external moisture and increase the service life of the battery pack 71; moreover, the sheath 72 has a wide range of uses and is suitable for any DC power tool; furthermore, the sheath 72 has a simple structure and is relatively easy to manufacture, so its cost is relatively low.

[0142] The utility model is not limited to the above specific implementations. Those skilled in the art can easily understand that there are many alternatives to the protection system and power tool of the utility model without departing from the principle and scope of the utility model. The protection scope of the utility model shall be based on the content of the claims.

Claims

1. A protection system, comprising a housing and a battery pack detachably connected to the housing, the housing being provided with a sole, the bottom of the sole being provided with a first sole flange and a second sole flange extending downward from the inner side of the first sole flange, the battery pack being provided with a battery pack base and a base baffle connected to the battery pack base; characterized in that: The protection system includes a sheath arranged on the periphery of the battery pack, the sheath includes a sheath base and a sheath baffle connected to the upper end of the sheath base, the sheath base abuts against the first sole flange, and the sheath baffle abuts against the first sole flange and covers the second sole flange.

2. The protection system according to claim 1, characterized in that: The upper end of the sheath base is provided with a sheath base positioning surface, the inner wall of the sheath base forms a sheath base engaging surface, the sheath base positioning surface abuts against the lower end of the first sole flange, and the sheath base engaging surface abuts against the peripheral surface of the battery pack base.

3. The protection system according to claim 2, characterized in that: The sheath baffle has a sheath baffle positioning surface and a sheath baffle engaging surface. The sheath baffle positioning surface abuts against the lower end of the first sole flange, and the sheath baffle engaging surface abuts against the outer periphery of the second sole flange.

4. The protection system according to claim 3, characterized in that: The base baffle is provided with a battery pack button portion at the end portion, and the sheath baffle extends rightward to form a sheath button portion, the inner wall of the sheath button portion forms a sheath button joint surface, and the sheath button joint surface abuts against the outer periphery of the battery pack button portion.

5. The protection system according to claim 4, characterized in that: The battery pack button portion is provided with a battery pack button, the sheath button portion is penetrated by a sheath button hole, and the battery pack button is exposed from the sheath button hole.

6. The protection system according to claim 5, characterized in that: The battery pack is provided with a nameplate portion at both the front and rear sides of the battery pack base, and the nameplate portion is at least partially shielded by the sheath base.

7. The protection system according to claim 6, characterized in that: The right end surface of the battery pack base is provided with a power display portion, and the sheath button portion does not cover the power display portion.

8. The protection system according to claim 7, characterized in that: The power display unit includes a power button and a power indicator light connected to the power button, and the power display light indicates the remaining power of the battery pack.

9. The protection system according to claim 1, characterized in that: The sole is provided with a battery pack mounting portion, and the battery pack is provided with a battery pack connecting portion, and the battery pack mounting portion and the battery pack connecting portion are adapted to each other.

10. An electric tool, characterized in that: The electric tool comprises the protection system according to any one of claims 1 to 9 above.

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