CN114947636A

CN114947636A - Surface cleaning apparatus

Info

Publication number: CN114947636A
Application number: CN202210449116.8A
Authority: CN
Inventors: 不公告发明人
Original assignee: Suzhou EUP Electric Co Ltd
Current assignee: Suzhou EUP Electric Co Ltd
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-08-30
Anticipated expiration: 2042-04-24
Also published as: CN114947636B

Abstract

The invention relates to a surface cleaning apparatus comprising: the cleaning base comprises a cleaning roller, a cleaning liquid distributor used for distributing cleaning liquid to the cleaning roller and/or a surface to be cleaned, a suction nozzle and a motor driving the cleaning roller to rotate; the portable cleaning main machine is removably arranged on the operating rod and comprises a machine shell, a liquid supply tank, a recovery tank, a suction motor, a battery pack and a second handle for a user to carry; a suction extension tube capable of being coupled to a portable cleaning host; and an auxiliary carrier disposed independently of the portable cleaning host, the auxiliary carrier including a base body defining a receiving recess sized and shaped to enable the portable cleaning host to be held on the base body in a leaning posture; wherein, when the portable cleaning host is in the leaning posture, the longitudinal central line of the recovery box forms an included angle of 0-60 degrees with the vertical direction.

Description

Surface cleaning apparatus

Technical Field

The invention relates to the field of cleaning equipment, in particular to surface cleaning equipment.

Background

Cleaning devices, in particular push-rod surface cleaning devices, clean and soil-pick up a floor to be cleaned by using a cleaning base with a brush roller. In operation of such machines, cleaning liquid is applied to the surface to be cleaned by the rotating brush roller, and the brush roller, during rotation, is also simultaneously able to pick up dirt and debris from the floor to be cleaned, along with the suction force of the suction device, and to be stored in a recovery tank on the pusher body.

The advantages are evident when a device of the above type is normally cleaned on a floor surface; if the machine body is limited by the weight of the machine body and the backward rotation angle of the machine body (because the dirty liquid in the recovery box flows back into the suction device to damage the suction device when the machine body is overturned by an overlarge angle) in special areas such as a table top, a high wall surface, a table bottom, a sofa bottom and the like, the machine body cannot be used for continuously cleaning the special areas.

Disclosure of Invention

It is an object of the present invention to provide a surface cleaning apparatus that can be safely used on a multi-zone surface.

In order to achieve the above object, the present application provides the following technical solutions: a surface cleaning apparatus, the surface cleaning apparatus comprising: the vertical type mobile unit comprises a cleaning base and a control rod, wherein the lower part of the control rod is rotatably connected to the cleaning base, the cleaning base comprises a cleaning roller capable of being in contact with a surface to be cleaned, a cleaning liquid distributor used for distributing cleaning liquid to the cleaning roller and/or the surface to be cleaned, a suction nozzle and a motor driving the cleaning roller to rotate, and a first handle is arranged at the upper part of the control rod; the portable cleaning main machine is removably arranged on the operating rod and comprises a machine shell, a liquid supply tank for storing cleaning liquid, a recovery tank for containing dirty liquid, a suction motor communicated with the recovery tank in a fluid mode, a battery pack and a second handle for a user to carry the portable cleaning main machine; a suction extension tube capable of being coupled to the portable cleaning main body detached from the wand; and an auxiliary carriage for supporting and carrying the portable cleaning host detached from the joystick to move along the surface to be cleaned, the auxiliary carriage comprising a base body and a plurality of moving wheels mounted on a bottom of the base body and adapted to roll along the surface to be cleaned, the base body defining a receiving recess sized and shaped to enable the portable cleaning host to be held on the base body in a leaning posture; wherein, when the portable cleaning main machine is in the leaning posture, the longitudinal center line of the recovery box forms an included angle of 0-60 degrees with the vertical direction.

In the above technical solution, preferably, the base includes: a tube holder sized and shaped to retain a portion of the suction extension tube on the seat.

In the above preferred aspect, it is further preferred that the holder body is made of a plastic material, and the tube holding portion is configured to be plastically deformed to achieve radial expansion when a part of the suction extension tube is pressed into the tube holding portion.

In the above-mentioned preferred embodiment, it is further preferred that the holder body includes a first portion and a second portion, a portion of the moving wheels is distributed at a bottom of the first portion, a portion of the moving wheels is distributed at a bottom of the second portion, the receiving recess is provided at the first portion, and the tube holding portion is disposed at the second portion. It is also further preferred that said second portion is foldably connected to said first portion.

In the above technical solution, preferably, the auxiliary carrier seat further includes: a tool rack capable of supporting a cleaning tool for coupling with the suction extension tube, the tool rack having a seat body.

In the above technical solution, preferably, when the portable cleaning host is in the leaning posture, an included angle of 30-45 ° is formed between a longitudinal center line of the recycling bin and a vertical direction.

In the above technical solution, preferably, the recycling bin is detachably mounted on the chassis, and the recycling bin can be directly detached from the chassis without detaching the portable cleaning main unit when the portable cleaning main unit is mounted on the operating lever and when the portable cleaning main unit is held on the stand body in a leaning posture.

In the above technical solution, preferably, the liquid supply tank and the battery pack are arranged opposite to each other, and the recovery tank is located between the liquid supply tank and the battery pack.

In the above technical solution, preferably, the second handle is located at the top of the housing.

Compared with the prior art, the surface cleaning equipment provided by the application has the advantages that a user can install the portable cleaning host machine on the operating rod to form vertical equipment for use, and also can install the portable cleaning host machine on the auxiliary carrying seat after being detached from the operating rod and connect the suction extension pipe to form horizontal equipment for use, the dirty liquid tank on the portable cleaning host machine can be kept in a safe working state for use no matter what way the portable cleaning host machine is put into use, and when the portable cleaning host machine is installed on the auxiliary carrying seat for use, the leaning state is kept, so that the usable volume of the recovery tank can be kept in a reasonable range, the portable cleaning host machine does not need to be moved by the user with great effort, and the user experience is better.

Drawings

FIG. 1 is a perspective view of a surface cleaning apparatus according to the present application; wherein the auxiliary carrier and the suction extension tube are omitted from the figure, the portable cleaning main machine is mounted on the vertical mobile unit, and the surface cleaning device is in a first working mode;

FIG. 2 is a schematic view of the portable cleaning host shown in FIG. 1 detached from the upright mobile unit;

FIG. 3 is a perspective view of the upright mobile unit shown in FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a perspective disassembled view of the cleaning base in the upright mobile unit shown in FIG. 3;

fig. 6 is a schematic perspective view of a portable cleaning host according to the present invention; wherein, the observation angle in the figure is a top view angle;

fig. 7 is a schematic perspective view of the portable cleaning host shown in fig. 6; wherein, the observation angle in the figure is a bottom view angle;

FIG. 8 is a perspective, disassembled view of the portable cleaning host shown in FIG. 6;

FIG. 9 is a side cross-sectional view of the portable cleaning host shown in FIG. 6;

FIG. 10 is a first perspective view of a surface cleaning apparatus of the present application in a second mode of operation; wherein, the vertical mobile unit is omitted in the figure, and the portable cleaning host is arranged on the auxiliary carrying seat;

FIG. 11 is a second perspective view of the surface cleaning apparatus shown in FIG. 10; wherein, the portable cleaning host is detached from the auxiliary carrying seat;

fig. 12 is a first perspective view of an auxiliary carrier seat according to the present invention; wherein, the view angle in the figure is a top view angle, the auxiliary carrying seat is in an unfolding state, and the tool rack is detachably arranged on the seat body;

fig. 13 is a second perspective view of the auxiliary carrier seat shown in fig. 12; wherein, the observation angle in the figure is a bottom view angle;

fig. 14 is a third perspective view of the auxiliary carrier seat shown in fig. 12; wherein the auxiliary carrier seat is in a folded state.

Wherein:

100. a surface cleaning device;

1. a vertical mobile unit;

11. cleaning the base; 111. a base housing; 112. an upper cover; 113. a roll cavity; 114. a cleaning roller; 115. a cleaning liquid dispenser; 116. a suction nozzle; 117. a support wheel;

12. an operating lever; 121. a first handle; 122. a vertical pole body; 1221. a locking member; 1222. positioning blocks;

123. a receiving table; 1231. a positioning groove of the receiving table; 1232. a receiving table locking member; 124. a control key; 125. a bearing wall; 126. an electrical connection socket; 127. a cleaning fluid interface; 128. a dirty liquid interface;

2. a portable cleaning host;

21. a housing; 211. a bottom wall; 212. a vertical wall;

213. a host top cover; 2131. a top cover locking groove; 2132. a top cover positioning seat;

214. a receiving cavity; 215. a first support section; 216. a second support portion; 217. a butt wall; 218. a docking station; 219. a case positioning block; 2110. a case locking groove;

22. a liquid supply tank; 221. a liquid outlet; 222. a liquid supply tube; 223. a liquid supply pump; 224. a cleaning liquid output nozzle;

23. a recycling bin; 231. a box body; 232. a recovery chamber; 233. an inclined wall; 234. an air outlet; 235. a sewage inlet pipe; 236. a tube inlet; 237. a dirty liquid recovery port; 238. a box body handle;

24. a suction motor;

25. a battery pack; 251. an electrical outlet; 252. an electrical connection port;

26. a second handle; 261. a control unit;

3. a suction extension tube;

31. a head end portion; 311. a tube body electric connection seat; 312. a pipe body cleaning liquid interface; 313. a pipe body foul solution interface;

32. a rigid tube; 33. a flexible hose;

34. a tail end portion;

35. a cleaning tool;

4. an auxiliary carrier seat; 41. a base body;

42. a first portion; 421. a front end portion; 4211. a first runner groove; 422. a rear end portion; 423. an outer peripheral wall;

424. a receiving recess; 4241. a support bottom wall; 4242. positioning a groove; 4243. a support sidewall;

425. a boss; 426. a receiving groove;

43. a second portion; 431. a support leg; 432. a second runner groove; 433. a tube holding portion;

44. a moving wheel;

y1, longitudinal centerline; y2, axis of rotation; alpha and an included angle.

Detailed Description

To explain technical contents, structural features, achieved objects and effects of the invention in detail, the technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. Moreover, the various exemplary embodiments may be different, but are not necessarily exclusive. For example, the particular shapes, configurations and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

Further, spatially relative terms such as "under … …," "below," "over … …," "upper," "side" (e.g., as in "side wall") and the like, in this application, thus describe one element's relationship to another (other) element as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below … …" can encompass both an orientation of above and below. Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1-2 illustrate a surface cleaning apparatus 100 provided by the present invention, the surface cleaning apparatus 100 being capable of being moved along a surface to be cleaned and performing a cleaning operation. Referring to fig. 10, the surface cleaning apparatus 100 includes an upright mobile unit 1 with a cleaning base 11 and a lever 12, a portable cleaning main unit 2 removably mounted on the lever 12, a suction extension pipe 3 attachable to the portable cleaning main unit 2, and an auxiliary carriage 4 independent of the portable cleaning main unit 2. The surface cleaning apparatus 100 has a first mode of operation (as shown in figure 1) suitable for cleaning floor areas and a second mode of operation (as shown in figure 10) suitable for cleaning walls, tables and elevated areas.

Referring to fig. 3 and 5, the cleaning base 11 is adapted to be moved over a surface to be cleaned. The cleaning base 11 includes a base housing 111 forming an outer contour, an upper cover 112 detachably attached to the base housing 111, a roller chamber 113 at a front portion of the cleaning base 11, a cleaning roller 114 rotatably disposed at the roller chamber 113, and a cleaning liquid distributor 115 and a suction nozzle 116 adjacent to the roller chamber 113.

The upper cover 112 is located at the front upper side of the base housing 111, and the roller chamber 113 is defined by the base housing 111 and the upper cover 112 together. The roller chamber 113 has a lower opening (not shown) open at the bottom of the base housing 111, which lower opening faces the surface to be cleaned. The lower portion of the scrub roller 114 passes out of the lower opening to contact the surface to be cleaned. The cleaning liquid distributor 115 and the suction nozzle 116 are both disposed inside the cleaning base 11, and the cleaning liquid distributor 115 is located on the front wall surface of the base housing 111 and faces the cleaning roller 114 to distribute the cleaning liquid on the cleaning roller 114. The suction nozzle 116 is adjacent to the roll cavity 113 and is in fluid communication with the roll cavity 113.

The cleaning base 11 is further provided with a motor (not shown) drivingly connected to the cleaning roller 114, the motor being located inside the cleaning base 11, and a pair of support wheels 117 rotatably connected to the rear of the base housing 111. When the cleaning base 11 is in operation, a pair of support wheels 117 is supported on the surface to be cleaned together with the cleaning roller 114, and the motor drives the cleaning roller 114 to rotate.

Referring to fig. 3-4, the operating rod 12 extends along a longitudinal direction and is rotatably connected to the cleaning base 11, and the operating rod 12 includes a first handle 121, an upright rod 122 and a receiving platform 123 arranged in sequence from top to bottom. A number of control keys 124 are provided on the first handle 121, the control keys 124 being used to control the operation of the surface cleaning apparatus 100. The form of the control key 124 is not limited to a button, knob, switch, or touch screen. In other embodiments, the control keys may also be provided on other parts of the surface cleaning apparatus, such as a portable cleaning host.

Referring to fig. 2, the receiving stand 123 protrudes forward relative to the upright rod 122 and can support the portable cleaning main unit 2. The top of the receiving platform 123 slopes downward in a rearward-forward direction and forms a receiving wall 125. The receiving wall 125 is sequentially provided with an electrical connection socket 126, a cleaning liquid interface 127 and a dirty liquid interface 128 from top to bottom, and the electrical connection socket 126, the cleaning liquid interface 127 and the dirty liquid interface 128 are all exposed obliquely upward. The cleaning fluid port 127 and the dirty fluid port 128 are in fluid communication with the cleaning fluid distributor 115 and the suction nozzle 116, respectively, on the cleaning base 11. The electrical connection socket 126 electrically connects the various electrical consumers of the surface cleaning apparatus 100 and the control key 124, and it will be appreciated that the control key 124 can send electrical signals out through the electrical connection path to control the various electrical consumers disposed on the portable cleaning host 2.

Referring to fig. 6 and 8, the portable cleaning main body 2 includes a housing 21 as a supporting frame, a liquid supply tank 22 capable of storing and supplying cleaning liquid to the outside, a collection tank 23 capable of receiving and storing dirty liquid, a suction motor 24 communicating with the collection tank 23, a battery pack 25 for supplying power to the surface cleaning apparatus 100, and a second handle 26 for a user to carry the portable cleaning main body 2. Both the liquid supply tank 22 and the recovery tank 23 are detachably mounted on the cabinet 21. The liquid supply tank 22 and the battery pack 25 are oppositely arranged left and right, the recovery tank 23 is positioned between the liquid supply tank 22 and the battery pack 25, the suction motor 24 is installed in the machine shell 21 and positioned on the upper side of the recovery tank 23, and the second handle 26 is positioned on the top of the machine shell 21.

The cabinet 21 includes a horizontally extending bottom wall 211, a vertically extending vertical wall 212, and a removable host top cover 213, the bottom wall 211 and the vertical wall 212 together defining a receiving cavity 214 adapted to receive the recovery tank 23. The front of the receiving cavity 214 is open for the user to put in and take out the recycling bin 23. The left and right ends of the bottom wall 211 project laterally outward relative to the vertical wall 212, and form a first support portion 215 for supporting the liquid supply tank 22 and a second support portion 216 for supporting the battery pack 25, respectively. The second handle 26 is integrated with the upper portion of the main unit top cover 213, and a main unit control part 261 is provided on the second handle 26, and the main unit control part 261 is electrically connected to each controllable device on the portable cleaning main unit 2 and the battery pack 25 to control the operation of the portable cleaning main unit 2. The host top cover 213 is removably attached to the vertical wall 212 and cooperates with the vertical wall 212 to define a vacuum chamber (not labeled) that is in fluid communication with the receiving chamber 214 in which the suction motor 24 is disposed.

Referring to fig. 3 and 7, the vertical rod 122 is provided with a locking member 1221 and a positioning member 1222 positioned at a lower side of the locking member 1221, the receiving table 123 is provided at a bottom thereof with a plurality of receiving table positioning grooves 1231 and a receiving table locking member 1232, the locking member 1221 and the positioning member 1222 are protruded forward, and the receiving table locking member 1232 is protruded upward. The rear portion of the host top cover 213 is provided with a top cover locking groove 2131 and a top cover positioning seat 2132 from top to bottom, the top cover locking groove 2131 and the top cover positioning seat 2132 are respectively adapted to the locking piece 1221 and the positioning block 1222, and the bottom of the housing 21 is further provided with a plurality of housing positioning blocks 219 adapted to the plurality of receiving table positioning grooves 1231 and an inwardly recessed housing locking groove 2110. When the portable cleaning host 2 is mounted on the vertical mobile unit 1, the positioning block 1222 is engaged with the top cap positioning seat 2132, and the housing positioning blocks 219 are engaged with the receiving table positioning grooves 1231 to determine the relative position of the portable cleaning host 2 and the operation rod 12; the locking

pieces

1221 and 2110 are engaged with the locking pieces 2132 and the housing locking slots 2110 and the receiving base locking pieces 1232 to fix the portable cleaning main unit 2 to the lever 12.

Referring to fig. 7-8, a portion of the rear lower wall of the vertical wall 212 is recessed toward the interior of the receiving cavity 214 and forms a docking seat 218, and the top of the docking seat 218 forms a docking wall 217 disposed obliquely. With reference to FIG. 2, abutment wall 217 is configured to slope forwardly and downwardly and to fit against bearing wall 125 on lever 12; the docking cradle 218 fits into the receiving station 123 on the lever 12. The abutting wall 217 is further provided with a contaminated liquid recovery port 237 penetrating the abutting wall 214. When the portable cleaning main body 2 is mounted on the vertical moving unit 1, the docking wall 217 and the docking base 218 are respectively engaged with the receiving wall 125 and the receiving platform 123, and the waste liquid recovery port 237 and the waste liquid port 128 are engaged.

Referring to fig. 8 to 9, the recycling box 23 includes a box 231, a recycling chamber 232 defined inside the box 231, an inclined wall 233 formed by recessing the rear portion of the box 231 toward the inside of the recycling chamber 232, an air outlet 234 opened at the top of the box 231, and a dirt inlet pipe 235 fixedly connected to the inclined wall 233. The inclined wall 233 is adapted to the abutment wall 217 and the dirt inlet pipe 235 has a pipe inlet 236 opening onto the inclined wall 233 and a pipe outlet (not shown) at the recovery chamber 232. When the recycling bin 23 is placed in the receiving chamber 214, the air outlet 234 is in fluid communication with the vacuum chamber, the inclined wall 233 is in contact with the abutting wall 217, and the pipe inlet 236 is in fluid communication with the waste recycling port 237. The recovery tank 23 has a longitudinal centerline Y1, and the entire recovery tank 23 extends generally along the longitudinal centerline Y1. The longitudinal center line Y1 is substantially coincident with the longitudinal center line of the entire portable cleaning main body 2, and the second handle 26 and the suction motor 24 are also distributed on the longitudinal center line Y1.

When the main portable cleaner 2 is mounted on the operating lever 12 of the vertical mobile unit 1, the suction nozzle 116 in the cleaning base 11, the dirty liquid port 128 on the supporting base 123, the dirty liquid recovery port 237 on the abutting wall 217, the dirty liquid inlet pipe 235 and the recovery chamber 232 are sequentially in fluid communication with each other to form a dirty liquid recovery path for dirty liquid to flow from the suction nozzle 116 into the recovery tank 23. The front portion of the recovery tank 238 is further provided with a tank handle 238, and the tank handle 238 of the recovery tank 23 is exposed during the installation of the portable cleaning apparatus 100 on the operating lever 12, and the recovery tank 23 can be directly removed from the cabinet 21 without removing the portable cleaning main unit 2.

The liquid supply tank 22 includes a solution chamber (indicated in the figure) inside, a liquid outlet 221 exposed to the outside, a liquid supply pipe 222 disposed in the housing 21, and a liquid supply pump 223 disposed on the liquid supply pipe 222. The head and tail ends of the liquid supply pipe 222 form a cleaning liquid input port (not shown) for the inflow of the cleaning liquid into the liquid supply pipe 222 and a cleaning liquid output nozzle 224 for the outflow of the cleaning liquid from the liquid supply pipe 222, respectively, the cleaning liquid input port being disposed at the upper portion of the vertical wall 212 and adapted to the liquid outlet 221 of the liquid supply tank 22. The cleaning liquid outlet nozzle 224 is exposed from the docking wall 217 of the housing 21, and the cleaning liquid outlet nozzle 224 is located on the upper side of the waste liquid recovery opening 237 and is matched with the cleaning liquid port 127 on the docking wall 125. When the liquid supply tank 22 is mounted on the housing 21, the liquid supply tank 22 is supported on the first support portion 215, and the liquid outlet 221 is in fluid communication with the cleaning liquid inlet of the liquid supply pipe 222. When the portable cleaning main unit 2 is mounted on the vertical mobile unit 1, the solution chamber, the liquid outlet 221, the liquid supply tube 222, the cleaning liquid port 127 on the receiving wall 125, and the cleaning liquid distributor 115 in the cleaning base 11 are sequentially in fluid communication and form a liquid supply path for distributing the cleaning liquid to the cleaning roller 114, and the liquid supply tube 224 is used for providing a flow power for the cleaning liquid on the path.

The battery pack 25 is provided with an electrical socket 251 exposed to the outside, an electrical socket (not shown) adapted to the electrical socket 251 is arranged on the vertical wall 212 of the housing 21, an electrical connection port 252 electrically connected to the electrical socket is further arranged on the docking wall 217, and the electrical connection port 252 is exposed to the outside. The electrical connection ports 252 are located on the upper side of the cleaning fluid delivery nozzle 224 and are adapted to the electrical connection sockets 126 on the receiving wall 125. When the battery pack 25 is mounted on the housing 21 and the portable cleaning host 2 is mounted on the upright mobile unit 1, the battery pack 25, the electrical socket 251, the electrical socket, the electrical connector 252 and the electrical connector 126 on the receiving wall 125 are electrically connected in turn, and the battery pack 25 provides electrical power to the various electrical devices on the surface cleaning apparatus 100.

The following illustrates the operation of the surface cleaning apparatus 100 in the first mode of operation: when the portable cleaning apparatus 100 is in the first operation mode, the portable cleaning main body 2 is mounted on the joystick 12 of the upright mobile unit 1. The user can hold the first handle 121 to push the surface cleaning device 100 on the surface to be cleaned and perform the cleaning operation, the liquid supply pump 223 is started, and the cleaning liquid in the liquid supply tank 22 reaches the cleaning liquid distributor 115 along the first liquid supply path under the action of the liquid supply pump 223 and is distributed onto the cleaning roller 114; the motor in the cleaning base 11 is activated to rotate the cleaning roller 144, and the rotating cleaning roller 114 performs a cleaning operation on the surface to be cleaned with the cleaning liquid. The suction motor 24 is activated and a negative pressure is created at the vacuum chamber, under the action of which the dirty liquid on the surface to be cleaned enters the recovery tank 23 via the lower opening, the roller chamber 113 and the suction nozzle 116.

Referring to fig. 10 to 11, the suction extension pipe 3 can be attached to the portable cleaning main unit 2 and includes a head end 31 and a tail end 34 which are distant from each other, a hard pipe 32 connected to the head end 31, an extension hose 33 between the hard pipe 32 and the tail end 34, and a cleaning tool 35 attached to the tail end 34. The cleaning tool 35 of this example may be any tool that can be attached to the trailing end 35 of the suction extension tube 3, such as a window brush, a cloth brush to be brushed, etc.

The head portion 31 is configured and dimensioned to fit against the abutment wall 217 and the abutment seat 218 of the housing 21, and the head portion 31 has disposed thereon a tubular electrical connection seat 311 adapted to the electrical connection port 252 of the housing 31, a tubular cleaning fluid port 312 adapted to the cleaning fluid delivery nozzle 224, and a tubular dirty fluid port 313 adapted to the dirty fluid recovery port 237.

When the suction extension pipe 3 is attached to the portable cleaning main body 2, the head portion 31 is received in the recessed portion of the docking seat 218, and the pipe electrical connection seat 311 is mated with the electrical connection port 252 of the portable cleaning main body 2, through which the control device (not shown) on the cleaning tool can control the operation of the portable cleaning main body 2; the tube cleaning fluid interface 312 is coupled to the cleaning fluid outlet nozzle 224, and the fluid supply tank 22, the fluid outlet 221, the fluid supply tube 222, the tube cleaning fluid interface 312, and the cleaning tool 35 are in fluid communication in sequence to form a fluid supply path for distributing the cleaning fluid to the surface to be cleaned; the tube body sewage port 313 is matched with the sewage recovery port 237, and the recovery cavity 232, the sewage inlet pipe 235, the sewage recovery port 237, the tube body sewage port 313 and the cleaning tool 35 are sequentially in fluid communication and form a sewage recovery path for recovering the sewage from the surface to be cleaned.

As shown in fig. 12 to 13, the auxiliary carrier block 4 includes a block body 41 for supporting the portable cleaning main unit 2 and four moving wheels 44 rotatably disposed at the block body 41. The seat body 41 comprises a first portion 42 and a second portion 43 rotatably hinged to the first portion 42 about a rotation axis Y2. The first portion 42 includes a front end 421 and a rear end 422 which are away from each other, an outer peripheral wall 423 extending in the up-down direction, and a receiving recess 424 between the front end 421 and the rear end 42, and the first portion 42 is hinged to the second portion 43 by the rear end 42. The bottom of the front end 421 is provided with a pair of first rotation grooves 4211 opposite to each other in the left and right direction, wherein two moving wheels are respectively rotatably provided in the pair of rotation grooves 4211 and protrude downward relative to the bottom of the first portion 42 to contact the surface to be cleaned.

The receiving recess 424 is arranged in left-right axial symmetry, and includes a pair of support bottom walls 4241, a pair of positioning holes 4242 opened in the pair of support bottom walls 4241, respectively, and a pair of support side walls 4243 extending from outer peripheral edges of the pair of support bottom walls 4241 to an upper surface of the first portion 42. The first portion 43 is further provided with a boss 425 between a pair of support bottom walls 4241, and the boss 425 protrudes from the pair of support bottom walls 4241 opposed to each other. Boss 425 defines an interior receiving slot 426. the receiving slot 426 is exposed outwardly from the bottom of first portion 42.

The receiving recess 424 is sized and shaped to enable the portable cleaning host 2 to be held on the mount body 41 in a leaning posture. Referring to fig. 14, when the portable cleaning host 2 is supported on the base body 41, the boss 425 extends into the docking seat 218 of the portable cleaning host 2, and the pair of housing positioning blocks 219 is matched with the pair of positioning slots 4242 to provide positioning for the portable cleaning host 2; a pair of support bottom walls 4241 supporting the housing 21 of the portable cleaning main body 2; the liquid supply tank 22 and the battery pack 25 of the portable cleaning main unit 2 are respectively abutted against a pair of support side walls 4243. When the portable cleaning host 2 is held in the seating body 41 in the leaning posture, the recovery box 23 is placed in the posture of keeping the face up and the box handle 238 is exposed to the outside to prevent the recovery box 23 from sliding down from the inside of the chassis 21, and the recovery box 23 can be directly removed from the chassis 21 without removing the portable cleaning host 2, so that a user can conveniently remove the recovery box 23 from the chassis 21 as required at any time.

As shown in fig. 10, the arrangement that the longitudinal center line Y1 of the recovery tank 23 forms an angle α of 0 ° to 60 ° with the vertical plane (C) during the portable cleaning host machine 2 is held in the stand body 41 in a leaning posture enables the stored dirty liquid in the recovery tank 23 not to flow backward to the suction motor 24 when the portable cleaning host machine 2 is held in the leaning posture in the stand body 41, and the effective use volume of the recovery tank 23 can be secured; in order to balance the height of the portable cleaning main unit 2 held on the holder body 41 in the vertical direction and the effective use volume of the recovery tank 23, the angle α may further preferably be 30 ° to 45 °.

With continued reference to fig. 11-13, the second portion 43 includes a pair of legs 431 disposed in a left-right opposing relationship and a tube retainer 433 disposed between the pair of legs 431. A pair of legs 431 each protrude outwardly with respect to the main body of the second portion 43 and are provided with a pair of second runner grooves 432 at the bottom, respectively, and the other two moving wheels 44 are rotatably disposed in the pair of second runner grooves 432 and protrude downwardly with respect to the second portion 43 to contact the surface to be cleaned. The auxiliary carrier block 4 is supported on and movable along the surface to be cleaned by the four moving wheels 44.

The tube holding portion 433 is a tube body having an upper notch, and the inner diameter of the tube body is adapted to the outer diameter of the hard tube 32. The tube holding portion 433 is sized and shaped so that the hard tube 32 capable of sucking the extension tube 3 is defined on the holder body 41. The holder body 41 is made of plastic, and when the suction extension pipe 3 is pressed in from the upper portion of the pipe holding portion 433, the pipe holding portion 433 can be radially expanded by plastic deformation to allow the rigid straight pipe 22 to enter the pipe holding portion 433. In this example, the suction extension pipe 3 coupled to the portable cleaning main unit 2 is fixed by the pipe holder 433, and the portable cleaning main unit 2 is indirectly fixed to the auxiliary carrying base 4. In other embodiments, an interlocking mechanism may also be provided between the auxiliary carrier seat 4 and the portable cleaning host 2, and the interlocking mechanism is not limited to a mechanical lock structure, and may also be a magnetic lock structure.

The auxiliary carrier seat 4 has an expanded position for carrying the portable cleaning main body 2 and a storage position suitable for storage. When the auxiliary carrier 4 is in the unfolded position, the first portion 42 and the second portion 43 are respectively located at two sides of the rotation axis Y2, and the four moving wheels 44 are supported on the ground to carry the portable cleaning main body 2 to move on the ground; when the auxiliary carrier 4 is in the storage position, the first portion 42 and the second portion 43 are folded, the pair of legs 431 are located outside the outer peripheral wall 423 of the first portion 43, and the tube holding portion 433 is turned from the bottom of the first portion 42 into the storage groove 423 of the first portion 43 to reduce the space required for storing the auxiliary carrier 4.

In other embodiments, the auxiliary carrying seat may further be disposed with a tool rack capable of supporting a cleaning tool, and the tool rack and the seat body may be in an integral form or in a separate assembled form. The tool rack is convenient for users to store and arrange various cleaning tools.

The operating principle of the surface cleaning apparatus 100 in the second mode of operation is described below:

when the portable cleaning apparatus 100 is in the second operation mode, the portable cleaning main body 2 is mounted on the auxiliary mount 4, the suction extension pipe 3 is attached to the portable cleaning main body 2, and the pipe holder 433 fixes the suction extension pipe 3 on the auxiliary mount 4. The user may operate the cleaning tool 35 to clean the table, wall, and overhead cleaning surfaces. During this process, the fluid supply pump 223 is activated, and the cleaning fluid in the fluid supply tank 22 is delivered by the fluid supply pump 223 along the fluid supply path to the ambient spray nozzle 352 and is dispensed onto the surface to be cleaned. The cleaning tool 35 scrapes the surface to be cleaned with the cleaning liquid; the suction motor 24 is activated and creates a negative pressure in the vacuum chamber, under which the dirt liquid on the surface to be cleaned enters the suction extension tube 3 via a suction nozzle (not shown) on the cleaning tool 35 and finally reaches the recovery tank 23.

When the portable cleaning main machine 2 is kept on the seat body 41 of the auxiliary carrying seat 4 in a leaning posture and moves on a surface to be cleaned along with the auxiliary carrying seat 4, the recovery box 23 on the portable cleaning main machine 2 always keeps the same posture, namely, the surface is arranged upwards, and the longitudinal central line Y1 of the recovery box 23 forms an included angle of less than or equal to 60 degrees with the vertical direction, so that the recovery box 23 can be effectively prevented from toppling, the problem that the suction motor 24 is out of order due to the fact that dirty liquid in the recovery cavity 232 flows into the vacuum cavity is avoided, and the portable surface main machine 2 is always operated in a safe state.

The basic principles, main features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the foregoing description only for the purpose of illustrating the principles of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims, specification, and equivalents thereof.

Claims

1. A surface cleaning apparatus, characterized in that the surface cleaning apparatus (100) comprises:

the vertical type mobile unit (1) comprises a cleaning base (11) and a control rod (12) with the lower part rotatably connected to the cleaning base (11), wherein the cleaning base (11) comprises a cleaning roller (114) capable of contacting with a surface to be cleaned, a cleaning liquid distributor (115) used for distributing cleaning liquid to the cleaning roller (114) and/or the surface to be cleaned, a suction nozzle (116) and a motor driving the cleaning roller (114) to rotate, and a first handle (121) is arranged at the upper part of the control rod (12);

a portable cleaning main body (2) removably mounted on the operating lever (12), the portable cleaning main body (2) comprising a housing (21), a liquid supply tank (22) for storing cleaning liquid, a recovery tank (23) for receiving dirty liquid, a suction motor (24) in fluid communication with the recovery tank (23), a battery pack (25), and a second handle (26) for a user to carry the portable cleaning main body (2);

a suction extension pipe (3) capable of being coupled to the portable cleaning main body (2) detached from the operating lever (12); and

an auxiliary carriage (4) for supporting and carrying the portable cleaning main unit (2) detached from the operating lever (12) for movement along a surface to be cleaned, the auxiliary carriage (4) including a base body (41) and a plurality of moving wheels (44) mounted on a bottom of the base body (41) and adapted to roll along the surface to be cleaned, the base body (41) defining a receiving recess (424), the receiving recess (424) being sized and shaped to enable the portable cleaning main unit (2) to be held in a leaning posture on the base body (41); wherein, when the portable cleaning host machine (2) is in the leaning posture, the longitudinal central line (Y1) of the recovery box (23) forms an included angle (alpha) of 0-60 degrees with the vertical direction.

2. A surface cleaning apparatus as claimed in claim 1, characterised in that: the base body (41) comprises: a tube holding portion (433), the tube holding portion (433) being sized and shaped to define a portion of the suction extension tube (3) on the seat (41).

3. A surface cleaning apparatus as claimed in claim 2, characterised in that: the holder body (41) is made of a plastic material, and the tube holding portion (433) is configured such that when a portion of the suction extension tube (3) is pressed into the tube holding portion (433), the tube holding portion (433) is plastically deformed to achieve radial expansion.

4. A surface cleaning apparatus as claimed in claim 2, characterised in that: said seat (41) comprises a first portion (42) and a second portion (43), part of said moving wheels (44) being distributed at the bottom of said first portion (42), part of said moving wheels (44) being distributed at the bottom of said second portion (43), said receiving recess (424) being provided at said first portion (42), said tube holder (433) being arranged at said second portion (43).

5. A surface cleaning apparatus as claimed in claim 4, characterised in that: the second portion (43) is foldably connected to the first portion (42).

6. A surface cleaning apparatus as claimed in claim 1, characterised in that: the auxiliary carrying seat (4) further comprises: a tool holder capable of supporting a cleaning tool for coupling with the suction extension pipe (3), the tool holder being mounted on the seat body (41).

7. A surface cleaning apparatus as claimed in claim 1, characterised in that: when the portable cleaning main machine (2) is in the leaning posture, the longitudinal central line (Y1) of the recovery box (23) forms an included angle (alpha) of 30-45 degrees with the vertical direction.

8. A surface cleaning apparatus as claimed in claim 1, characterised in that: the recovery box (23) is detachably mounted on the housing (21), and the recovery box (23) can be directly removed from the housing (21) without removing the portable cleaning main unit (2) when the portable cleaning main unit (2) is mounted on the operating lever (12) and when the portable cleaning main unit (2) is held on the holder body (41) in the leaning posture.

9. A surface cleaning apparatus as claimed in claim 1, characterised in that: the liquid supply tank (22) and the battery pack (25) are arranged oppositely, and the recovery tank (23) is positioned between the liquid supply tank (22) and the battery pack (25).

10. A surface cleaning apparatus as claimed in claim 1, characterised in that: the second handle (26) is positioned at the top of the machine shell (21).