Dust collection equipment with lifting wheel structure

Abstract

The invention discloses dust collection equipment with a lifting wheel structure, and relates to the technical field of sweepers. Dust collection equipment with a lifting wheel structure comprises a rear driving wheel mechanism and a front guide wheel mechanism, the rear driving wheel mechanism comprises a driving wheel module and a driving wheel lifting assembly used for driving the driving wheel module to ascend and descend, and the front guide wheel mechanism comprises a guide wheel module and a guide wheel lifting assembly used for driving the guide wheel module to ascend and descend. By arranging the corresponding driving wheel lifting assembly and the guide wheel lifting assembly, the dust collection equipment can ascend or descend according to the terrain condition to adjust the distance between the suction port and the ground, and therefore the problem that when the dust collection equipment moves to the soft and easily-adsorbed ground such as a carpet, a suction head sinks or slips can be effectively prevented.

Description

Technical Field

[0001] The invention relates to the technical field of sweepers, and in particular to a dust collecting device with a lifting wheel structure. Background Art

[0002] With the continuous development of smart furniture technology, the functions and performance of sweepers as an important tool for household cleaning are also constantly improving. However, when facing complex ground environments, such as carpets, thresholds or uneven ground, traditional sweepers often encounter problems such as wheel jamming, slipping or inability to pass smoothly. Especially when moving from hard floors to carpets, the suction head of the sweeper is very easy to be adsorbed on the edge of the softer carpet and cause clogging of the suction head of the sweeper. As a result, the suction head of the sweeper may sink or slip, making it difficult for the sweeper to continue moving forward, seriously affecting the cleaning efficiency. Summary of the invention

[0003] In order to improve the smoothness of a sweeping machine when passing through areas with different terrains and to enhance the adaptability of the sweeping machine to different terrains, the present application provides a vacuuming device with a lifting wheel structure.

[0004] The present application provides a vacuum cleaner with a lifting wheel structure that adopts the following technical solution: A dust collecting device with a lifting wheel structure, comprising: A main frame, the main frame comprising a chassis; A rear drive wheel mechanism, which is arranged at the rear side of the chassis, and comprises a drive wheel module and a drive wheel lifting assembly, and the drive wheel lifting assembly is used to drive the drive wheel module to lift; A front guide wheel mechanism is arranged on the front side of the base frame, and the front guide wheel mechanism includes a guide wheel module and a guide wheel lifting assembly, and the guide wheel lifting assembly is used to drive the guide wheel module to lift.

[0005] By adopting the above technical solution, the vacuum cleaner can be raised or lowered according to the terrain conditions to adjust the distance between the suction port and the ground, thereby effectively preventing the vacuum cleaner from sinking or slipping when moving to a soft and easily adsorbed ground such as a carpet.

[0006] Optionally, the drive wheel module comprises a mounting shell, a drive component and a drive wheel, the drive component is mounted on the inner side of the mounting shell, the drive component is connected to the drive wheel, the chassis is provided with a drive wheel slot frame, and the drive wheel module is movably mounted on the drive wheel slot frame through the mounting shell; The chassis is provided with a mounting platform, and the driving wheel lifting assembly includes a driving wheel lifting motor and a lifting screw. The driving wheel lifting motor is fixedly installed on the mounting platform, and the driving end of the driving wheel lifting motor is vertically downward and connected to the lifting screw. The mounting shell is provided with a lifting ear, and the lifting ear passes through the mounting platform and is threadedly connected to the lifting screw.

[0007] By adopting the above technical solution, when the driving wheel lifting motor is started, the lifting screw rotates. Since the mounting platform limits the rotation direction of the lifting ear of the mounting shell, when the lifting screw rotates, the mounting shell can move along the extension direction of the lifting ear with the lifting screw to achieve the lifting of the driving wheel module. In addition, the overall structure of the screw drive is compact. Compared with other lifting structures that are stacked vertically, it not only takes up less space, but also helps to reduce the overall height of the vacuum cleaner and increase the scope of application of the vacuum cleaner. In addition, the subsequent inspection and maintenance work is simple and convenient.

[0008] Optionally, the drive wheel lifting assembly also includes a plurality of groups of guide rods, which are evenly arranged on the circumference of the drive wheel groove frame, and the circumference of the drive wheel housing is provided with guide ears corresponding to the guide rods, and the guide ears are movably mounted on the circumference of the lifting guide rod.

[0009] By adopting the above technical solution, the shaking or deviation of the mounting housing caused by the rotation of the lifting screw can be effectively prevented, which is beneficial to reducing the lateral pressure of the lifting ear and extending the service life of the mounting housing.

[0010] Optionally, a shock-absorbing compression spring is sleeved on the circumference of the guide rod, one end of the shock-absorbing compression spring abuts against the guide ear, and the other end abuts against the chassis.

[0011] By adopting the above technical solution, the shock-absorbing compression spring can provide a certain elastic support to the drive wheel module through the guide ear, which is not only beneficial to reducing the load of the lifting screw rod, but also beneficial to improving the lifting stability of the drive wheel module.

[0012] Optionally, the main frame includes a top cover, a first tension spring is connected between the top end of the mounting shell and the top cover, and a second tension spring is connected between the top end of the driving component and the top cover.

[0013] By adopting the above technical scheme, not only can the top cover of the vacuum cleaner be used to suspend the drive wheel module, thereby reducing the load applied by the drive wheel module on the lifting screw rod and the shock-absorbing spring, which is beneficial to improving the service life of the drive wheel lifting assembly and the shock-absorbing spring, but also the shock-absorbing compression spring sleeved on the guide rod is beneficial to further improve the lifting stability of the drive wheel module.

[0014] Optionally, a limiting step is provided on the inner side of the drive housing.

[0015] By adopting the above technical solution, since the mounting shell cover is arranged at the top of the drive wheel groove frame, the limiting step can limit the descending distance of the drive wheel module by limiting the drive wheel groove frame, which is helpful to prevent the drive wheel module from excessively descending and affecting the movement of the vacuum cleaner when the drive wheel lifting assembly fails.

[0016] Optionally, the guide wheel module includes a guide wheel, a universal wheel frame, a wheel frame shaft and a shaft sleeve, the universal wheel is rotatably arranged in the universal wheel frame, one end of the wheel frame shaft is fixedly connected to the universal wheel frame, and the other end is movably arranged in the shaft sleeve, and the shaft sleeve is connected to the guide wheel lifting assembly; The chassis is provided with a guide wheel slot frame, the guide wheel module is movably inserted into the guide wheel slot frame, and can be lifted and lowered along the guide wheel slot frame by the guide wheel lifting assembly.

[0017] By adopting the above technical solution, since the guide wheel lifting assembly drives the entire guide wheel module to lift and lower through the driving shaft sleeve, and the wheel frame shaft is movably arranged in the shaft sleeve, the lifting and lowering of the guide wheel module does not affect the rotation of the guide wheel, that is, the guide wheel can rotate during the lifting process, which is beneficial to improving the flexibility of the guide wheel module.

[0018] Optionally, the guide wheel lifting assembly includes a guide wheel lifting motor, a driving gear, a driven gear ring and a limit housing, the driving end of the guide wheel lifting motor is connected to the driving gear, the driven gear ring is sleeved on the outer peripheral side of the shaft sleeve, the outer peripheral side of the driven gear ring is meshed with the driving gear, and the inner peripheral side of the driven gear ring is threadedly connected to the shaft sleeve; The limit housing is detachably connected to the chassis and is covered on the top of the driven gear ring. A guide slot is provided on the outer peripheral side of the sleeve. The limit housing is provided with a limit block, and the limit block is inserted into the guide slot.

[0019] By adopting the above technical solution, when the guide wheel lifting motor is started, the driving gear drives the driven gear ring to rotate. Since the driven gear ring is threadedly connected to the shaft sleeve, and under the limiting action of the limiting shell, the shaft sleeve can drive the guide wheel module as a whole to rise and fall along the guide wheel groove frame.

[0020] Optionally, a gear ring groove is provided at the top of the guide wheel groove frame, a stabilizing portion is extended from the bottom of the driven gear ring, the stabilizing portion is rotatably disposed in the gear ring groove, and the gear ring groove is filled with lubricating oil.

[0021] By adopting the above technical solution, the gear ring groove can prevent the driven gear ring from shifting during rotation, and together with lubricating oil, it is beneficial to improve the rotation stability and smoothness of the driven gear ring.

[0022] Optionally, a cliff sensor is provided on the bottom side of the front end of the chassis, and the cliff sensor is linked to the drive wheel lifting assembly and the guide wheel lifting assembly through a central control panel.

[0023] By adopting the above technical solution, the vacuum cleaner can detect and transmit ground information to the central control panel in advance through the cliff sensor, and start the drive wheel lifting component and the guide wheel lifting component to drive the drive wheel module and the guide wheel module to lift and lower, so as to lift or lower the vacuum cleaner as a whole in advance, which is beneficial to improve the degree of automation of the vacuum cleaner.

[0024] In summary, the technical solution of this application has at least one of the following beneficial effects: 1. By setting corresponding drive wheel lifting components and guide wheel lifting components, the vacuum cleaner can be lifted or lowered according to the terrain conditions to adjust the distance between the suction port and the ground, thereby effectively preventing the vacuum cleaner from sinking or slipping when it moves to a soft and easily adsorbed ground such as a carpet.

[0025] 2. The drive wheel module is driven to rise and fall by a screw drive, which not only takes up less space, but also helps to reduce the overall height of the vacuum cleaner and improve the application range of the vacuum cleaner, and also makes the subsequent inspection and maintenance work simple and convenient.

[0026] 3. Through the control of the central control panel of the vacuum cleaner, the guide wheel lifting assembly can be started in conjunction with the drive wheel lifting assembly. When the drive wheel module is lifted or lowered, the guide wheel module can be lifted or lowered synchronously, so that the vacuum cleaner can be lifted or lowered smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the bottom structure of a vacuum cleaner with a lifting wheel structure in Example 1 of the present application.

[0028] Figure 2 It is a schematic diagram of the internal structure of a vacuum cleaner with a lifting wheel structure in Example 1 of the present application.

[0029] Figure 3 It is a structural schematic diagram of a rear drive wheel mechanism of a vacuum cleaner with a lifting wheel structure in Example 1 of the present application.

[0030] Figure 4 It is a cross-sectional view of a front guide wheel mechanism of a vacuum cleaner with a lifting wheel structure in Example 1 of the present application.

[0031] Figure 5 yes Figure 4 A partial enlarged view of a.

[0032] Figure 6 It is a schematic diagram of the bottom structure of a front guide wheel mechanism of a vacuum cleaner with a lifting wheel structure in Example 2 of the present application.

[0033] Figure 7 It is a structural cross-sectional view of a front guide wheel mechanism of a vacuum cleaner having a lifting wheel structure in the second embodiment of the present application.

[0034] Description of reference numerals: 1. Main frame; 11. Chassis; 111. Driving wheel slot frame; 112. Mounting platform; 113. Guide wheel slot frame; 1131. Gear slot; 2. Rear driving wheel mechanism; 21. Driving wheel module; 211. Mounting shell; 2111. Lifting ear; 2112. Guide ear; 2113. Position limiting step; 212. Driving component; 2121. Driving shell; 2122. Driving motor; 2123. Transmission gear train; 2124. Photoelectric sensor; 2125. Gap disk; 213. Driving wheel; 22. Driving wheel lifting assembly; 221. Driving wheel lifting motor; 222. Lifting screw rod; 223. Guide rod; 23. Spring member; 231. Shock-absorbing compression spring; 232, first tension spring; 233, second tension spring; 3, front guide wheel mechanism; 31, guide wheel module; 311, guide wheel; 312, universal wheel frame; 313, wheel frame shaft; 314, bushing; 3141, guide slot; 32, guide wheel lifting assembly; 321, guide wheel lifting motor; 322, driving gear; 323, driven gear ring; 3231, stabilizing part; 324, limit housing; 3241, limit block; 325, landing gear; 326, landing tension spring; 327, landing line assembly; 3271, traction line; 3272, line frame; 3273, winding wheel; 3274, winding motor; 4, cliff sensor. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-7 This application is described in further detail.

[0036] Embodiment 1 Embodiment 1 of the present application discloses a dust collecting device with a lifting wheel structure. Figure 1 and Figure 2A vacuum cleaner with a lifting wheel structure includes a main frame 1, and a rear drive wheel mechanism 2 and a front guide wheel mechanism 3 installed on the main frame 1, wherein the main frame 1 includes a chassis 11 and a top cover, the rear drive wheel mechanism 2 is arranged on the rear side of the chassis 11, and the front guide wheel mechanism 3 is arranged on the front side of the chassis 11. Specifically, the rear drive wheel mechanism 2 includes two sets of drive wheel modules 21 and two sets of drive wheel lifting assemblies 22 corresponding thereto, and the front guide wheel mechanism 3 includes a guide wheel module 31 and a guide wheel lifting assembly 32. In addition, a cliff sensor 4 is also arranged on the front side of the chassis 11, and the cliff sensor 4 is linked to the drive wheel lifting assembly 22 and the guide wheel lifting assembly 32 through the central control panel of the vacuum cleaner. Furthermore, the vacuum cleaner can detect and transmit ground information to the central control panel in advance through the cliff sensor 4, and start the drive wheel lifting assembly 22 and the guide wheel lifting assembly 32 to drive the drive wheel module 21 and the guide wheel module 31 to lift and lower, thereby realizing the overall lifting or lowering of the vacuum cleaner, and can adjust the distance between the chassis 11 and the opposite side when passing through different areas, preventing the suction head from causing adverse effects on the movement of the vacuum cleaner, which is conducive to improving the smoothness of the transition of the vacuum cleaner in areas with different terrains, and improving the adaptability of the vacuum cleaner to different terrains.

[0037] Reference Figure 2 and Figure 3 The drive wheel module 21 includes a mounting shell 211, a drive component 212 and a drive wheel 213. The drive component 212 is connected to the drive wheel 213 and is mounted on the inner side of the mounting shell 211. The chassis 11 is provided with a drive wheel slot frame 111. The drive wheel module 21 is movably mounted in the drive wheel slot frame 111 through the mounting shell 211. Specifically, the drive component 212 includes a drive shell 2121, a drive motor 2122 and a transmission gear train 2123. The drive shell 2121 connects the drive motor 2122 and the transmission gear train 2123 to each other, and the drive motor 2122 is connected to the drive wheel 213 through the transmission gear train 2123. In this embodiment, the drive motor 2122 uses a servo motor and is electrically connected to the central control board of the vacuum cleaner.

[0038] Reference Figure 2 and Figure 3The driving motor 2122 is also connected to a speed measuring disc. Specifically, the speed measuring disc includes a photoelectric sensor 2124 and a gap disc 2125. The photoelectric sensor 2124 is fixedly installed on the side of the driving motor 2122 away from the transmission gear train 2123 and is electrically connected to the central control board of the vacuum cleaner. The gap disc 2125 is installed at the rear end of the driving shaft of the driving motor 2122. When the gap disc 2125 rotates synchronously with the driving shaft of the driving motor 2122, the photoelectric sensor 2124 can measure the rotation speed of the driving shaft of the driving motor 2122 by performing light transmission detection on the gap part on the gap disc 2125, so that the vacuum cleaner can cooperate with the driving wheel lifting assembly 22 to accurately control its moving speed, which is conducive to the vacuum cleaner to move smoothly to different terrains.

[0039] Reference Figure 2 and Figure 3 The chassis 11 is provided with a mounting platform 112. In this embodiment, the mounting platform 112 is located at the front and rear sides of the driving slot frame. The driving wheel lifting assembly 22 includes a driving wheel lifting motor 221, a lifting screw rod 222 and a plurality of guide rods 223, wherein the driving wheel lifting motor 221 is fixedly mounted on the mounting platform 112, the driving end of the driving wheel lifting motor 221 extends vertically downward and is connected to the lifting screw rod 222, a plurality of guide rods 223 are evenly arranged on the peripheral side of the driving wheel slot frame 111, and the peripheral side of the mounting shell 211 is provided with lifting ears 2111 and guide ears 2112, the lifting ears 2111 pass through the mounting platform 112 and are threadedly connected to the lifting screw rod 222, and the guide ears 2112 are correspondingly sleeved on the peripheral side of the guide rod 223 and are slidably connected to the guide rod 223. Therefore, when the driving wheel lifting motor 221 is started, the lifting screw rod 222 rotates, and the lifting ears 2111 can drive the mounting shell 211 to rise and fall along the thread. In this embodiment, the driving wheel lifting motor 221 is a servo motor and is electrically connected to the central control board of the dust collection device.

[0040] Reference Figure 3 The mounting shell 211 is provided with a limiting step 2113, which divides the mounting shell 211 into an upper half and a lower half. The lower half of the mounting shell 211 is covered on the top of the driving wheel groove frame 111, and the limiting step 2113 is used to cooperate with the driving wheel groove frame 111 to limit the descending distance of the driving wheel module 21. When the driving wheel lifting assembly 22 drives the driving wheel module 21 to descend to the lowest point, that is, when the dust collecting device is lifted to the highest position, the driving wheel groove frame 111 presses against the limiting step 2113, thereby preventing the driving wheel module 21 from continuing to descend.

[0041] Reference Figure 2 and Figure 3In order to ensure that the drive wheel module 21 can maintain a relatively stable movement while being lifted, a plurality of groups of spring members 23 are also provided in the rear drive wheel mechanism 2. Specifically, a shock-absorbing compression spring 231 is sleeved around the guide rod 223, one end of the shock-absorbing compression spring 231 abuts against the bottom side of the guide ear 2112, and the other end abuts against the chassis 11; in addition, a first suspension hook is provided at the top of the mounting shell 211, and a first tension spring 232 is connected between the first suspension hook and the top cover, and a second suspension hook is provided at the top of the drive shell 2121, and the second suspension hook passes through the mounting shell 211 and is connected to a second tension spring 233 between the top cover.

[0042] Reference Figure 4 A guide wheel slot frame 113 is provided at the front side of the chassis 11, and the guide wheel module 31 is movably arranged in the guide wheel slot frame 113. The guide wheel module 31 includes a guide wheel 311, a universal wheel frame 312, a wheel frame shaft 313 and a shaft sleeve 314, wherein the guide wheel 311 is rotatably arranged in the universal wheel frame 312, one end of the wheel frame shaft 313 is fixedly connected to the universal wheel frame 312, and the other end is movably arranged in the shaft sleeve 314, and the shaft sleeve 314 is connected to the guide wheel lifting assembly 32, so that the guide wheel lifting assembly 32 can drive the guide wheel module 31 to move up and down along the guide wheel slot frame 113.

[0043] Reference Figure 4 and Figure 5 The guide wheel lifting assembly 32 includes a guide wheel lifting motor 321, a driving gear 322, a driven gear ring 323 and a limiting housing 324, wherein the driving end of the guide wheel lifting motor 321 is connected to the driving gear 322, and the driven gear ring 323 is sleeved on the outer peripheral side of the sleeve 314. Specifically, the outer peripheral side of the driven gear ring 323 is meshed with the driving gear 322, and the inner peripheral side of the driven gear ring 323 is threadedly connected to the sleeve 314. The limiting housing 324 is detachably connected to the chassis 11 and is covered directly above the driven gear ring 323, so that the limiting housing 324 can limit the driven gear ring 323 in cooperation with the chassis 11, and the driven gear ring 323 is not easy to move up and down. A guide slot 3141 is provided on the outer peripheral side of the sleeve 314, and a limiting block 3241 is provided on the inner side of the limiting housing 324, and the limiting block 3241 is slidably inserted into the guide slot 3141. When the guide wheel lifting motor 321 is started, the driving gear 322 drives the driven gear ring 323 to rotate. Since the driven gear ring 323 is threadedly connected to the shaft sleeve 314, and under the limiting effect of the limiting housing 324, the shaft sleeve 314 can drive the guide wheel module 31 to be lifted and lowered along the guide wheel groove frame 113. In this embodiment, the guide wheel lifting assembly 32 also uses a servo motor and is electrically connected to the central control board of the vacuum cleaner.

[0044] Reference Figure 4 and Figure 5The top of the guide wheel groove frame 113 is provided with a toothed ring groove, and the bottom of the driven toothed ring 323 is extended with a stabilizing portion 3231, which is rotatably disposed in the toothed ring groove, and the toothed ring groove is filled with lubricating oil. Thus, the toothed ring groove can prevent the driven toothed ring 323 from deflecting during the rotation process, and at the same time, the combination of lubricating oil is conducive to improving the rotation stability and smoothness of the driven toothed ring 323, and improving the lifting stability of the guide wheel module 31.

[0045] The implementation principle of a dust collection device with a lifting wheel structure in the first embodiment of the present application is: By setting the drive wheel lifting assembly 22 and the guide wheel lifting assembly 32 to drive the drive wheel module 21 and the guide wheel module 31 to rise and fall, the vacuum cleaner can be lifted or lowered according to the terrain conditions, thereby adjusting the distance between the suction port and the ground, and preventing the vacuum cleaner from sinking or slipping when moving to a soft and easily adsorbed ground such as a carpet.

[0046] The driving wheel lifting assembly 22 drives the lifting screw 222 to rotate through the driving wheel lifting motor 221, and cooperates with a plurality of groups of guide rods 223, so that the mounting shell 211 can drive the entire driving wheel module 21 to be lifted and lowered. At the same time, under the elastic support and traction of the plurality of groups of spring members 23, the stability of the driving wheel module 21 is greatly improved, which not only enables the vacuum cleaner to maintain a relatively stable movement while being lifted and lowered, but also reduces the impact of the vibration generated by the vacuum cleaner when passing through uneven ground on the driving wheel lifting assembly 22, which is conducive to extending the service life of the driving wheel lifting assembly 22.

[0047] In addition, through the control of the central control panel of the vacuum cleaner, the guide wheel lifting assembly 32 can be started in conjunction with the drive wheel lifting assembly 22, and the guide wheel module 31 can be lifted and lowered synchronously when the drive wheel module 21 is lifted and lowered, so that the vacuum cleaner can be lifted or lowered smoothly. Among them, the guide wheel lifting assembly 32 drives the driving gear 322 and the driven gear ring 323 to rotate through the guide wheel lifting motor 321, and cooperates with the limit housing 324 to limit the shaft sleeve 314, so that the shaft sleeve 314 can drive the entire guide wheel module 31 to move along the extension direction of the thread, so as to realize the lifting and lowering of the guide wheel module 31.

[0048] Embodiment 2 Embodiment 2 of the present application discloses a dust collecting device with a lifting wheel structure, referring to Figure 6 and Figure 7 , which is different from the first embodiment in that the front guide wheel mechanism 3 is different.

[0049] Reference Figure 6 and Figure 7In the present embodiment, the front guide wheel mechanism 3 comprises a guide wheel module 31 and a guide wheel lifting assembly 32, wherein the guide wheel module 31 comprises a guide wheel 311, a universal wheel frame 312 and a wheel frame shaft 313, the guide wheel 311 is rotatably arranged in the universal wheel frame 312 through a wire-controlled lifting assembly, one end of the wheel frame shaft 313 is fixedly connected to the universal wheel frame 312, and the other end is rotatably arranged in the guide wheel 311 frame groove and is rotatably connected to the chassis 11.

[0050] Reference Figure 6 and Figure 7 The guide wheel lifting assembly 32 includes a landing gear 325, a landing spring 326 and a landing line group 327, wherein the landing gear 325 is arranged on both sides of the guide wheel 311. Specifically, in the present embodiment, the landing gear 325 is in an L-shaped structure, the intersection of the landing gear 325 is rotatably connected to the universal wheel frame 312, the long arm of the landing gear 325 is rotatably connected to the guide wheel 311, the short arm of the landing gear 325 is connected to the landing spring 326, and the other end of the landing spring 326 is connected to the universal wheel frame 312.

[0051] Reference Figure 6 and Figure 7 The landing wire assembly 327 includes a traction wire 3271, a wire rack 3272, a reel 3273, and a reel motor 3274, wherein the wire rack 3272, the reel 3273, and the reel motor 3274 are all arranged on the side of the chassis 11 away from the guide wheel 311, and the driving end of the reel motor 3274 is connected to the reel 3273. One end of the traction wire 3271 is wound around the reel 3273, and the other end passes through the wire rack 3272 and the center of the wheel frame shaft 313 and is connected to the long arm of the landing gear 325. In this embodiment, the reel motor 3274 also adopts a servo motor and is electrically connected to the central control board of the vacuum cleaner.

[0052] The implementation principle of a dust collection device with a lifting wheel structure in the second embodiment of the present application is: When the vacuum cleaner needs to be lifted, the winding motor 3274 starts and drives the winding wheel 3273 to unwind, and at this time, under the traction of the lifting and lowering tension spring 326, the landing gear 325 lowers the guide wheel 311 to achieve the lowering of the guide wheel module 31. On the contrary, when the vacuum cleaner needs to be lowered, the winding motor 3274 starts and drives the winding wheel 3273 to rewind, the traction line 3271 is tightened, and the lifting and lowering tension spring 326 is stretched and stores elastic potential energy, and the landing gear 325 together with the guide wheel 311 is pulled toward the chassis 11 to achieve the lifting of the guide wheel module 31.

[0053] In addition, since the guide wheel 311 is installed on the universal wheel frame 312 through the landing gear 325 and the landing spring 326, when the vacuum cleaner encounters an uneven ground during movement, the guide wheel 311 can elastically shrink toward the chassis 11 appropriately, and has a certain suspension and shock-absorbing effect, which is beneficial to reduce the adverse effects of the ground on the guide wheel module 31 and extend the service life of the guide wheel module 31.

[0054] This specific implementation manner is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the specific implementation manner as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A vacuum cleaner having a lifting wheel structure, characterized in that: include: A main frame (1), the main frame (1) comprising a chassis (11); A rear drive wheel mechanism (2), the rear drive wheel mechanism (2) being arranged on the rear side of the chassis (11), the rear drive wheel mechanism (2) comprising a drive wheel module (21) and a drive wheel lifting assembly (22), the drive wheel lifting assembly (22) being used to drive the drive wheel module (21) to be lifted or lowered; A front guide wheel mechanism (3), the front guide wheel mechanism (3) being arranged on the front side of the base frame, the front guide wheel mechanism (3) comprising a guide wheel module (31) and a guide wheel lifting assembly (32), the guide wheel lifting assembly (32) being used to drive the guide wheel module (31) to be lifted or lowered.

2. The dust collecting device with a lifting wheel structure according to claim 1, characterized in that: The drive wheel module (21) comprises a mounting shell (211), a drive component (212) and a drive wheel (213); the drive component (212) is mounted on the inner side of the mounting shell (211); the drive component (212) is connected to the drive wheel (213); the chassis (11) is provided with a drive wheel slot frame (111); the drive wheel module (21) is movably mounted in the drive wheel slot frame (111) through the mounting shell (211); The chassis (11) is provided with a mounting platform (112); the driving wheel lifting assembly (22) comprises a driving wheel lifting motor (221) and a lifting screw (222); the driving wheel lifting motor (221) is fixedly mounted on the mounting platform (112); a driving end of the driving wheel lifting motor (221) is vertically downward and connected to the lifting screw (222); the mounting housing (211) is provided with a lifting ear (2111); the lifting ear (2111) passes through the mounting platform (112) and is threadedly connected to the lifting screw (222).

3. The dust collecting device with a lifting wheel structure according to claim 2, characterized in that: The driving wheel lifting assembly (22) further comprises a plurality of groups of guide rods (223), wherein the plurality of groups of guide rods (223) are evenly arranged on the peripheral side of the driving wheel groove frame (111), and guide ears (2112) corresponding to the guide rods (223) are arranged on the peripheral side of the driving wheel housing, and the guide ears (2112) are movably sleeved on the peripheral side of the lifting guide rods.

4. The dust collecting device with a lifting wheel structure according to claim 3, characterized in that: A shock-absorbing compression spring (231) is sleeved on the circumferential side of the guide rod (223); one end of the shock-absorbing compression spring (231) abuts against the guide ear (2112), and the other end abuts against the chassis (11).

5. The dust collecting device with a lifting wheel structure according to claim 2, characterized in that: The main frame (1) comprises a top cover, a first tension spring (232) is connected between the top end of the mounting shell (211) and the top cover, and a second tension spring (233) is connected between the top end of the driving component (212) and the top cover.

6. The dust collecting device with a lifting wheel structure according to claim 2, characterized in that: A limiting step (2113) is provided inside the installation shell (211).

7. The dust collecting device with a lifting wheel structure according to claim 1, characterized in that: The guide wheel module (31) comprises a guide wheel (311), a universal wheel frame (312), a wheel frame shaft (313) and a shaft sleeve (314); the universal wheel is rotatably arranged in the universal wheel frame (312); one end of the wheel frame shaft (313) is fixedly connected to the universal wheel frame (312), and the other end is movably arranged in the shaft sleeve (314); the shaft sleeve (314) is connected to the guide wheel lifting assembly (32); The chassis (11) is provided with a guide wheel slot frame (113), and the guide wheel module (31) is movably arranged in the guide wheel slot frame (113) and can be lifted up and down along the guide wheel slot frame (113) by the guide wheel lifting assembly (32).

8. The dust collecting device with a lifting wheel structure according to claim 7, characterized in that: The guide wheel lifting assembly (32) comprises a guide wheel lifting motor (321), a driving gear (322), a driven gear ring (323) and a limit housing (324); the driving end of the guide wheel lifting motor (321) is connected to the driving gear (322); the driven gear ring (323) is sleeved on the outer peripheral side of the shaft sleeve (314); the outer peripheral side of the driven gear ring (323) and the driving gear (322) are meshed and connected with each other; and the inner peripheral side of the driven gear ring (323) is threadedly connected to the shaft sleeve (314); The limit housing (324) is detachably connected to the chassis (11) and is arranged to cover the top of the driven gear ring (323). A guide slot (3141) is provided on the outer peripheral side of the shaft sleeve (314). The limit housing (324) is provided with a limit block (3241), and the limit block (3241) is plugged into the guide slot (3141).

9. The dust collecting device with a lifting wheel structure according to claim 8, characterized in that: A gear ring groove is provided at the top of the guide wheel groove frame (113), a stabilizing portion (3231) extends from the bottom of the driven gear ring (323), and the stabilizing portion (3231) is rotatably disposed in the gear ring groove, and the gear ring groove is filled with lubricating oil.

10. The dust collecting device with a lifting wheel structure according to claim 1, characterized in that: A cliff sensor (4) is provided on the front side of the chassis (11), and the cliff sensor (4) is linked to the drive wheel lifting assembly (22) and the guide wheel lifting assembly (32) via a central control panel.

Images