CN114947636B

CN114947636B - Surface cleaning apparatus

Info

Publication number: CN114947636B
Application number: CN202210449116.8A
Authority: CN
Inventors: 请求不公布姓名
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: 2023-06-16
Anticipated expiration: 2042-04-24
Also published as: CN114947636A

Abstract

The present invention relates to a surface cleaning apparatus comprising: the vertical type mobile unit comprises a cleaning base and a control rod, wherein the cleaning base comprises a cleaning roller, a cleaning liquid distributor for distributing cleaning liquid to the cleaning roller and/or a surface to be cleaned, a suction nozzle and a motor for driving the cleaning roller to rotate; a portable cleaning main body removably mounted on the operating lever, comprising a housing, a liquid supply tank, a recovery tank, a suction motor, a battery pack, and a second handle for a user to carry the portable cleaning main body; a suction extension tube capable of coupling with a portable cleaning host; and an auxiliary carrier provided independently of the portable cleaning host, the auxiliary carrier comprising 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 position; wherein, under leaning posture, the longitudinal center 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-bar surface cleaning devices, clean and soil pick-up the floor to be cleaned by using a cleaning base with a brush roll. In operation of such a machine, cleaning liquid is applied to the surface to be cleaned by the rotating brush roller, and the brush roller, during rotation, is also able to pick up and present, together with the suction force of the suction device, dirt and debris on the floor to be cleaned in the recovery tank on the push-bar machine body.

The advantages of the above type of apparatus are evident when cleaning on floor surfaces in general; if the machine encounters a low surface or a high surface, such as a special area of a table top, a high wall surface, a table bottom, a sofa bottom and the like, the machine cannot be used for continuously cleaning the special areas due to the limitation of the weight of the machine body and the backward rotation angle (because when the machine body is overturned at an excessive angle, the dirty liquid in the recovery box can flow back into the suction device to cause damage to the suction device).

Disclosure of Invention

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

In order to achieve the above object, the present application provides the following technical solutions: a surface cleaning apparatus, the surface cleaning apparatus comprising: a vertical moving unit including a cleaning base including a cleaning roller capable of contacting a surface to be cleaned, a cleaning liquid dispenser for dispensing a cleaning liquid to the cleaning roller and/or the surface to be cleaned, a suction nozzle, and a motor for driving the cleaning roller to rotate, and a lever having a first handle at an upper portion thereof; a portable cleaning main body removably mounted on the operating lever, the portable cleaning main body including a housing, a liquid supply tank for storing a cleaning liquid, a recovery tank for receiving a contaminated liquid, a suction motor in fluid communication with the recovery tank, a battery pack, and a second handle for a user to carry the portable cleaning main body; a suction extension tube capable of being coupled to the portable cleaning main unit detached from the lever; and an auxiliary carrier for supporting and carrying the portable cleaning host detached from the joystick along a surface to be cleaned, the auxiliary carrier comprising a base and a plurality of moving wheels mounted at the bottom of the base and adapted to roll along the surface to be cleaned, the base defining a receiving recess sized and shaped to enable the portable cleaning host to be held on the base in a reclined position; the portable cleaning main machine is in the leaning posture, and 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 seat body includes: and a tube retaining portion sized and shaped to define a portion of the suction extension tube on the housing.

In the above preferred embodiment, it is further preferred that the housing 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 preferred embodiment, it is further preferred that the seat body includes a first portion and a second portion, a part of the moving wheels are distributed at the bottom of the first portion, a part of the moving wheels are distributed at the bottom of the second portion, the receiving recess is provided at the first portion, and the tube holding portion is provided at the second portion. It may be further preferred that said second portion is foldably connected to said first portion.

In the foregoing technical solution, preferably, the auxiliary carrier further includes: and the tool rack can support a cleaning tool for coupling with the suction extension tube, and the tool rack is arranged on the seat body.

In the above technical solution, preferably, when the portable cleaning main machine is in the leaning posture, the longitudinal center line of the recovery box forms an included angle of 30-45 ° with the vertical direction.

In the above-mentioned technical solution, preferably, the recovery box is detachably mounted on the housing, and the recovery box can be directly removed from the housing without removing the portable cleaning main unit when the portable cleaning main unit is mounted on the joystick and when the portable cleaning main unit is held on the base in a leaning posture.

In the above technical solution, preferably, the liquid supply tank is disposed opposite to the battery pack, 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 a top of the casing.

Compared with the prior art, the surface cleaning equipment provided by the application can be used by a user by installing the portable cleaning host on the operating rod to form vertical equipment, and also can be used by installing the portable cleaning host on the auxiliary carrying seat after being detached from the operating rod and connecting the suction extension pipe to form horizontal equipment, so that the dirty liquid tank on the portable cleaning host can be used in a safe working state no matter how the portable cleaning host is put into use, and when the portable cleaning host 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 in a reasonable range without the need of the user to laboriously carry the portable cleaning host, and the use experience of the user is better.

Drawings

FIG. 1 is a schematic perspective view of a surface cleaning apparatus according to the present application; wherein, the auxiliary carrying seat and the suction extension tube are omitted in the figure, the portable cleaning host is arranged on the vertical moving unit, and the surface cleaning equipment 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 vertical mobile unit shown in fig. 2;

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

FIG. 5 is a perspective exploded view of a 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 view angle in the figure is a top view angle;

FIG. 7 is a schematic diagram of a second perspective structure of the portable cleaning apparatus shown in FIG. 6; wherein, the view angle in the figure is the bottom view angle;

FIG. 8 is a perspective exploded view of the portable cleaning main unit 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 schematic perspective view of a surface cleaning apparatus according to the present invention in a second mode of operation; wherein, the vertical mobile unit is omitted in the figure, the portable cleaning host is arranged on the auxiliary carrying seat;

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

FIG. 12 is a schematic perspective view of an auxiliary carrier provided by the present invention; wherein, the viewing angle in the figure is a top view angle, the auxiliary carrying seat is in a unfolding state, and the tool rack is detachably arranged on the seat body;

FIG. 13 is a schematic diagram showing a second perspective structure of the auxiliary carrier shown in FIG. 12; wherein, the view angle in the figure is the bottom view angle;

FIG. 14 is a schematic perspective view of the auxiliary carrier shown in FIG. 12; wherein, this auxiliary carrying seat is in the folded state.

Wherein:

100. a surface cleaning apparatus;

1. a vertical moving unit;

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

12. a joystick; 121. a first handle; 122. a vertical rod body; 1221. a locking member; 1222. a positioning block;

123. a receiving table; 1231. a receiving table positioning groove; 1232. a receiving table locking member; 124. a control key; 125. a receiving wall; 126. an electrical connection base; 127. a cleaning liquid 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 storage chamber; 215. a first support portion; 216. a second supporting part; 217. a butt wall; 218. a butt joint seat; 219. a housing positioning block; 2110. a housing locking groove;

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

23. a recovery box; 231. a case; 232. a recovery chamber; 233. an inclined wall; 234. an air outlet; 235. a sewage inlet pipe; 236. a tube inlet; 237. a contaminated liquid recovery port; 238. a box 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. sucking the extension tube;

31. a head end portion; 311. the pipe body is electrically connected with the seat; 312. a tube cleaning liquid interface; 313. a pipe body sewage interface;

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

34. a tail end portion;

35. a cleaning tool;

4. an auxiliary carrying seat; 41. a base;

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

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

425. a boss; 426. a storage groove;

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

44. a moving wheel;

y1, longitudinal center line; y2, the axis of the rotating shaft; alpha, included angle.

Description of the embodiments

In order to describe the technical content, constructional features, objects and effects of the invention in detail, the technical solutions of 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 some embodiments of the present application, 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. Furthermore, the various exemplary embodiments may be different, but are not necessarily exclusive. For example, the specific shapes, configurations, and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

Furthermore, spatially relative terms such as "under … …," "under," "above … …," "on," "side" (e.g., as in "sidewall") and the like are used herein to 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 "under" or "beneath" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "below … …" may include both upper and lower orientations. Furthermore, the device 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 moving along a surface to be cleaned and performing a cleaning operation. Referring to fig. 10, the surface cleaning apparatus 100 includes an upright type moving unit 1 with a cleaning base 11 and a lever 12, a portable cleaning main body 2 removably mounted on the lever 12, a suction extension tube 3 attachable to the portable cleaning main body 2, and an auxiliary carrying seat 4 independent of the portable cleaning main body 2. The surface cleaning apparatus 100 has a first mode of operation (shown in fig. 1) adapted to clean floor areas and a second mode of operation (shown in fig. 10) adapted to clean walls, tables, and overhead areas.

Referring to fig. 3 and 5, the cleaning base 11 is adapted to move 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 dispenser 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 together with the upper cover 112. The roller cavity 113 has a lower opening (not shown) opened at the bottom of the base housing 111, the lower opening facing the surface to be cleaned. The lower portion of the cleaning roller 114 passes out of the lower opening to contact the surface to be cleaned. The cleaning liquid dispenser 115 and the suction nozzle 116 are uniformly disposed inside the cleaning base 11, and the cleaning liquid dispenser 115 is disposed on the front wall surface of the base housing 111 and faces the cleaning roller 114 to dispense the cleaning liquid on the cleaning roller 114. Suction nozzle 116 is adjacent to roller cavity 113 and is in fluid communication with roller cavity 113.

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

Referring to fig. 3 to 4, the lever 12 extends in a longitudinal direction and is rotatably coupled to the cleaning base 11, and the lever 12 includes a first handle 121, an upstanding stem 122 and a receiving stand 123 disposed sequentially from top to bottom. The first handle 121 is provided with a number of control keys 124, which control keys 124 are 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 the portable cleaning host.

Referring to fig. 2, the receiving stand 123 protrudes forward with respect to the upright post 122 and is capable of supporting the portable cleaning main unit 2. The top of the receiving platform 123 slopes downwardly in a back-to-front direction and forms a receiving wall 125. The receiving wall 125 is provided with an electrical connection seat 126, a cleaning liquid interface 127 and a dirty liquid interface 128 in this order from top to bottom, and the electrical connection seat 126, the cleaning liquid interface 127 and the dirty liquid interface 128 are all exposed obliquely upward. The cleaning liquid interface 127 and the dirty liquid interface 128 are in fluid communication with the cleaning liquid dispenser 115 and the suction nozzle 116, respectively, on the cleaning base 11. The electrical connection pad 126 electrically connects the respective powered device of the surface cleaning apparatus 100 and the control key 124, and it is understood that the control key 124 may transmit an electrical signal outwardly through the electrical connection path to control the respective powered device disposed on the portable cleaning host 2.

Referring to fig. 6 and 8, the portable cleaning main unit 2 includes a cabinet 21 as a supporting frame, a liquid supply tank 22 capable of storing and supplying cleaning liquid to the outside, a recovery tank 23 capable of receiving and storing contaminated liquid, a suction motor 24 in communication with the recovery tank 23, a battery pack 25 for supplying electric power to the surface cleaning apparatus 100, and a second handle 26 for a user to carry the portable cleaning main unit 2. Both the liquid supply tank 22 and the recovery tank 23 are detachably mounted on the casing 21. The liquid supply tank 22 and the battery pack 25 are arranged side to side, the recovery tank 23 is located between the liquid supply tank 22 and the battery pack 25, the suction motor 24 is installed in the housing 21 and located at the upper side of the recovery tank 23, and the second handle 26 is located at the top of the housing 21.

The housing 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 receiving chamber 214 is provided with an open front portion for the user to insert and withdraw the recovery tank 23. The left and right ends of the bottom wall 211 protrude laterally outward with respect 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 on the upper portion of the main body top cover 213, and a main body control part 261 is provided on the second handle 26, and the main body control part 261 is electrically connected with each controllable device on the portable cleaning main body 2 and the battery pack 25 to control the operation of the portable cleaning main body 2. The main frame top cover 213 is detachably connected to the vertical wall 212 and defines a vacuum chamber (not shown) with the vertical wall 212, the vacuum chamber being in fluid communication with the receiving chamber 214, and the suction motor 24 being disposed within the vacuum chamber.

Referring to fig. 3 and 7, a locking member 1221 and a positioning block 1222 positioned at a lower side of the locking member 1221 are disposed on the upright rod 122, a plurality of receiving positioning grooves 1231 and a receiving locking member 1232 are disposed at a bottom of the receiving table 123, the locking member 1221 protrudes forward from the positioning block 1222, and the receiving locking member 1232 protrudes. The rear of the main body top 213 is provided with a top locking groove 2131 and a top positioning seat 2132 from top to bottom, the top locking groove 2131 and the top positioning seat 2132 are respectively adapted to the locking piece 1221 and the positioning piece 1222, and the bottom of the casing 21 is further provided with a plurality of casing positioning pieces 219 adapted to the plurality of receiving table positioning grooves 1231 and an inwardly recessed casing locking groove 2110. When the portable cleaning main machine 2 is mounted on the vertical mobile unit 1, the positioning blocks 1222 are matched with the top cover positioning seat 2132, and the plurality of casing positioning blocks 219 are matched with the plurality of bearing table positioning grooves 1231 so as to determine the relative positions of the portable cleaning main machine 2 and the operating lever 12; the locking member 1221 mates with the locking groove 2132 and the housing locking groove 2110 mates with the landing locking member 1232 to secure the portable cleaning main unit 2 to the joystick 12.

Referring to fig. 7-8, a portion of the wall of the rear lower portion of the vertical wall 212 is recessed toward the interior of the receiving cavity 214 and forms a pair of seats 218, the top of the seats 218 forming an obliquely disposed abutment wall 217. With reference to fig. 2, the abutment wall 217 is configured to slope forward and downward and to fit the receiving wall 125 on the lever 12; the docking cradle 218 is adapted to receive the abutment 123 on the lever 12. The abutting wall 217 is also provided with a dirty liquid recovery port 237 penetrating the abutting wall 217. When the portable cleaning main unit 2 is mounted on the upright mobile unit 1, the docking wall 217 and the docking base 218 are respectively matched with the receiving wall 125 and the receiving table 123, and the dirty liquid recovery port 237 is matched with the dirty liquid interface 128.

Referring to fig. 8 to 9, the recovery tank 23 includes a tank body 231, a recovery chamber 232 defined inside the tank body 231, an inclined wall 233 formed by recessing the rear of the tank body 231 toward the inside of the recovery chamber 232, an air outlet 234 formed at the top of the tank body 231, and a sewage 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 tube 235 has a tube inlet 236 opening onto the inclined wall 233 and a tube outlet (not shown) at the recycling cavity 232. When the recovery tank 23 is placed in the receiving chamber 214, the air outlet 234 is in fluid communication with the vacuum chamber, the sloped wall 233 is in contact with the docking wall 217, and the tube inlet 236 is in fluid communication with the dirty liquid recovery inlet 237. The recovery tank 23 has a longitudinal center line Y1, and the entire recovery tank 23 extends substantially along the longitudinal center line Y1. The longitudinal centerline Y1 is substantially coincident with the longitudinal centerline of the entire portable cleaning main unit 2, and the second handle 26 and the suction motor 24 are also distributed on the longitudinal centerline Y1.

When the portable cleaning main unit 2 is mounted on the operating lever 12 of the upright type mobile unit 1, the suction nozzle 116 in the cleaning base 11, the dirty liquid interface 128 on the receiving base 123, the dirty liquid recovery port 237 on the docking wall 217, the dirty liquid inlet pipe 235 and the recovery chamber 232 are in fluid communication in this order and form a dirty liquid recovery path for dirty liquid flowing from the suction nozzle 116 into the recovery tank 23. The front of the recovery tank 23 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 main body 2 on the joystick 12, and the recovery tank 23 can be directly removed from the casing 21 without removing the portable cleaning main body 2.

The liquid supply tank 22 includes a solution chamber (shown in the figure) located inside, a liquid outlet 221 exposed to the outside, a liquid supply pipe 222 located in the casing 21 and a liquid supply pump 223 disposed on the liquid supply pipe 222 are also disposed on the portable cleaning main unit 2. The two ends of the liquid supply pipe 222 form a cleaning liquid inlet (not shown) for the cleaning liquid to flow into the liquid supply pipe 222 and a cleaning liquid outlet nozzle 224 for the cleaning liquid to flow out of the liquid supply pipe 222, respectively, and the cleaning liquid inlet is arranged at the upper part of the vertical wall 212 and is matched with the liquid outlet 221 of the liquid supply tank 22. The cleaning liquid outlet nozzle 224 is exposed from the abutting wall 217 of the casing 21, and the cleaning liquid outlet nozzle 224 is located on the upper side of the dirty liquid recovery port 237 and is adapted to the cleaning liquid interface 127 on the receiving 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 type mobile unit 1, the solution chamber, the liquid outlet 221, the liquid supply pipe 222, the cleaning liquid interface 127 on the receiving wall 125, and the cleaning liquid dispenser 115 in the cleaning base 11 are sequentially in fluid communication and form a liquid supply path for dispensing the cleaning liquid to the cleaning roller 114, and the liquid supply pump 223 is used for providing flowing power for the cleaning liquid on the path.

The battery pack 25 is provided with an exposed electric socket 251, an electric socket (not shown) adapted to the electric socket 251 is arranged on the vertical wall 212 of the casing 21, and the docking wall 217 is further provided with an electric connection port 252 electrically connected to the electric socket, and the electric connection port 252 is exposed. The electric connection port 252 is located on the upper side of the cleaning liquid outlet nozzle 224 and is adapted to the electric connection seat 126 on the receiving wall 125. When the battery pack 25 is mounted on the casing 21 and the portable cleaning main unit 2 is mounted on the upright mobile unit 1, the battery pack 25, the electric socket 251, the electric socket, the electric connection port 252 and the electric connection seat 126 on the receiving wall 125 are electrically connected in sequence, and the battery pack 25 provides electric power for each electric device on the surface cleaning apparatus 100.

The following illustrates the principle of operation of the surface cleaning apparatus 100 in the first mode of operation: when the surface cleaning apparatus 100 is in the first mode of operation, the portable cleaning host 2 is mounted on the joystick 12 of the upright mobile unit 1. A user can push the surface cleaning apparatus 100 on the surface to be cleaned by holding the first handle 121 and performing cleaning operation, and start the liquid supply pump 223, so that the cleaning liquid in the liquid supply tank 22 reaches the cleaning liquid dispenser 115 along the first liquid supply path under the action of the liquid supply pump 223 and is dispensed onto the cleaning roller 114; the motor in the cleaning base 11 is started to drive the cleaning roller 144 to rotate, and the rotating cleaning roller 114 performs cleaning operation on the surface to be cleaned by using the cleaning liquid. The suction motor 24 is activated and creates a negative pressure at the vacuum chamber, under the effect of which the dirt 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. 10-11, the suction extension tube 3 can be attached to the portable cleaning host 2 and includes a head end 31 and a tail end 34 that are remote from each other, a rigid tube 32 connected to the head end 31, a flexible hose 33 located between the rigid tube 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 34 of the suction extension tube 3, such as a window brush, a cloth brush to be brushed, or the like.

The head end 31 is configured to be structurally and dimensionally adapted to the docking wall 217 and the docking seat 218 of the casing 21, and a pipe body electric connection seat 311 adapted to the electric connection port 252 on the casing 21, a pipe body cleaning liquid interface 312 adapted to the cleaning liquid output nozzle 224, and a pipe body dirty liquid interface 313 adapted to the dirty liquid recovery port 237 are arranged on the head end 31.

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

As shown in fig. 12 to 13, the auxiliary carrier 4 includes a base 41 for supporting the portable cleaning main body 2 and four moving wheels 44 rotatably arranged at the base 41. The housing 41 includes 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 distant 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 through the rear end 422. The bottom of the front end portion 421 is provided with a pair of first rotating grooves 4211 opposing left and right, wherein two moving wheels are rotatably provided in the pair of rotating grooves 4211, respectively, and protrude downward with respect to the bottom of the first portion 42 to contact the surface to be cleaned.

The receiving recess 424 is arranged in a left-right axisymmetric manner and includes a pair of support bottom walls 4241, a pair of positioning holes 4242 respectively opened on the pair of support bottom walls 4241, 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 located between the pair of support bottom walls 4241, the boss 425 protruding above the opposite pair of support bottom walls 4241. The boss 425 defines an internally located receiving slot 426, the receiving slot 426 being exposed outwardly from the bottom of the first portion 42.

The receiving recess 424 is sized and shaped to enable the portable cleaning main machine 2 to be held on the base 41 in a leaning position. Referring to fig. 14, when the portable cleaning main unit 2 is supported on the base 41, the boss 425 extends into the docking seat 218 of the portable cleaning main unit 2, and the pair of housing positioning blocks 219 are matched with the pair of positioning grooves 4242 to provide positioning for the portable cleaning main unit 2; a pair of support bottom walls 4241 supporting the housing 21 of the portable cleaning main unit 2; the liquid supply tank 22 and the battery pack 25 of the portable cleaning main unit 2 are respectively abutted against the pair of support side walls 4243. When the portable cleaning main body 2 is held in the seat 41 in the leaning posture, the recovery box 23 is held in the upward facing posture and the box handle 238 is exposed to the outside to prevent the recovery box 23 from sliding down from the casing 21, and the recovery box 23 can be directly removed from the casing 21 without removing the portable cleaning main body 2, thereby facilitating the user to detach the recovery box 23 from the casing 21 as needed at any time.

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

With continued reference to fig. 11-13, the second portion 43 includes a pair of legs 431 disposed opposite one another from side to side and a tube retaining portion 433 located between the pair of legs 431. The pair of legs 431 each protrude outwardly relative to the main body of the second part 43 and are respectively provided with a pair of second rotation wheel grooves 432 at the bottom, and the other two moving wheels 44 are rotatably disposed in the pair of second rotation wheel grooves 432 and protrude downwardly relative to the second part 43 to contact the surface to be cleaned. The auxiliary carrier 4 is supported on and movable along the surface to be cleaned by means of the four moving wheels 44.

The tube holding portion 433 is an upper notched tube body having an inner diameter that matches the outer diameter of the rigid 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 seat 41. The seat body 41 is made of plastic, and when the suction extension tube 3 is pressed from the upper portion of the tube holding portion 433, the tube holding portion 433 can be radially expanded by plastic deformation to allow the hard straight tube 22 to enter the tube holding portion 433. In this example, the suction extension tube 3 coupled to the portable cleaning main body 2 is fixed by the tube holding portion 433, thereby indirectly fixing the portable cleaning main body 2 to the auxiliary carrier seat 4. In other embodiments, an interlocking mechanism may be provided between the auxiliary carrier 4 and the portable cleaning host 2, and the interlocking mechanism is not limited to a mechanical lock structure, but may be a magnetically attracted lock mechanism.

The auxiliary carrying seat 4 has a deployed position starting from carrying the portable cleaning main body 2 and a storage position suitable for storage. When the auxiliary carrying seat 4 is in the unfolding position, the first part 42 and the second part 43 are respectively positioned at two sides of the rotating shaft axis Y2, and four moving wheels 44 are supported on the ground to carry the portable cleaning main machine 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 peripheral wall 423 of the first portion 43, and the tube holding portion 433 is turned into the storage groove 426 of the first portion 43 from the bottom of the first portion 42, so as to reduce the space required for storing the auxiliary carrier 4.

In other embodiments, the auxiliary carrier may further have a tool holder capable of supporting the cleaning tool, where the tool holder and the base may be integrally formed or separately assembled. The tool rack is convenient for users to store and arrange various cleaning tools.

The following describes the working principle of the surface cleaning apparatus 100 in the second mode of operation:

when the surface cleaning apparatus 100 is in the second mode of operation, the portable cleaning main machine 2 is mounted on the auxiliary carrying seat 4, the suction extension tube 3 is attached to the portable cleaning main machine 2, and the tube holding portion 433 fixes the suction extension tube 3 on the auxiliary carrying seat 4. The user can clean the table, the wall, and the upper waiting cleaning surface by operating the cleaning tool 35. In the process, the liquid supply pump 223 is started, and the cleaning liquid in the liquid supply tank 22 reaches the external liquid spray nozzle 352 along the liquid supply path under the action of the liquid supply pump 223 and is distributed to the surface to be cleaned. Scraping the surface to be cleaned with a cleaning liquid on the cleaning tool 35; the suction motor 24 is activated and creates a negative pressure at 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 in the figure) on the cleaning tool 35 and finally reaches the recovery tank 23.

When the portable cleaning main machine 2 is kept on the seat 41 of the auxiliary carrying seat 4 in a leaning posture and moves along with the auxiliary carrying seat 4 on the surface to be cleaned, the recovery box 23 on the portable cleaning main machine 2 always keeps the same posture, namely is arranged face up, and the longitudinal center line Y1 of the recovery box 23 forms an included angle smaller than or equal to 60 DEG with the vertical direction, so that the recovery box 23 can be effectively prevented from toppling over, and the problem that the suction motor 24 is failed due to the fact that sewage in the recovery cavity 232 flows into the vacuum cavity is avoided, so that the portable surface main machine 2 always runs in a safe state.

The basic principle, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, which have been described in the foregoing embodiments and description merely illustrates the principles of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, the scope of which is defined in the appended claims, specification and their equivalents.

Claims

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

an upright moving unit (1) comprising a cleaning base (11) and a lever (12) whose lower part is rotatably connected to the cleaning base (11), the cleaning base (11) comprising a cleaning roller (114) capable of contacting a surface to be cleaned, a cleaning liquid dispenser (115) for dispensing cleaning liquid to the cleaning roller (114) and/or the surface to be cleaned, a suction nozzle (116), and a motor for driving the cleaning roller (114) to rotate, the upper part of the lever (12) being provided with a first handle (121);

a portable cleaning main body (2) removably mounted on the operating lever (12), the portable cleaning main body (2) including a housing (21), a liquid supply tank (22) for storing cleaning liquid, a recovery tank (23) for receiving contaminated 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 tube (3) capable of being coupled to said portable cleaning main unit (2) detached from said operating lever (12); and

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

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

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

4. A surface cleaning apparatus as claimed in claim 2, wherein: the base body (41) comprises a first part (42) and a second part (43), part of the moving wheels (44) are distributed at the bottom of the first part (42), part of the moving wheels (44) are distributed at the bottom of the second part (43), the receiving concave part (424) is arranged at the first part (42), and the pipe holding part (433) is arranged at the second part (43).

5. The surface cleaning apparatus of claim 4, wherein: the second portion (43) is foldably connected to the first portion (42).

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

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

8. A surface cleaning apparatus as claimed in claim 1, wherein: the recovery box (23) is detachably mounted on the machine shell (21), and the recovery box (23) can be directly dismounted from the machine shell (21) under the condition that the portable cleaning host machine (2) is not dismounted when the portable cleaning host machine (2) is mounted on the operating rod (12) and when the portable cleaning host machine (2) is kept on the base body (41) in the leaning posture.

9. A surface cleaning apparatus as claimed in claim 1, wherein: the liquid supply box (22) is arranged opposite to the battery pack (25), and the recovery box (23) is positioned between the liquid supply box (22) and the battery pack (25).

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