Mop driving device and sweeper

Abstract

The mop driving device comprises a driving motor and a transmission mechanism, the input end of the transmission mechanism is in transmission connection with the output end of the driving motor, the output end of the transmission mechanism is provided with a lifting screw rod, and the lifting screw rod is used for driving a mop to ascend and descend. An elastic damping piece is arranged in a shell of the transmission mechanism, installed above the lifting screw and used for damping descending of the lifting screw which ascends to the limit position. When the lifting screw ascends to the limit position, the upper end of the lifting screw is matched with the elastic damping part, the elastic damping part is used for damping the screw ascending to the limit position to automatically descend, and therefore the mop is prevented from automatically sliding down, and the product performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of self-cleaning equipment, in particular to a mop driving device and a sweeper. Background Art

[0002] A sweeping machine is a self-cleaning device, which is equipped with a walking assembly, a mopping assembly, a dust collection assembly, a mop drive assembly, etc. The mopping assembly includes a mop and a screw connected to the mop. The mop is below the bottom plate of the sweeping machine. The mop drive assembly is arranged in the body of the sweeping machine, and the mop drive assembly includes a motor, a transmission gear set, and an output end gear with an internal threaded hole. The screw passes through the bottom plate and is connected to the internal threaded hole. During the vacuum cleaning process of the sweeping machine, the mop is in a raised state. When mopping the floor is required, when the motor runs forward, the screw drives the mop to move downward to the extreme position and drives the mop to rotate to clean the floor. After mopping the floor, the motor runs in the reverse direction, the screw moves up and drives the mop to rise off the ground.

[0003] When the mop is in the raised state, the screw is completely held by the thread engagement between the screw and the internal threaded hole. When the sweeper is performing vacuum cleaning operations, due to vibration and the gravity of the mop, the screw may overcome the thread engagement force and rotate and move downward, causing the mop to slowly slide down, affecting the sweeper's cleaning operation. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a mop drive device and a sweeper. An elastic damping member is arranged in the housing of the transmission mechanism to damp the descent of the screw rod that rises to the extreme position, thereby preventing the mop from automatically sliding down and improving the performance of the product.

[0005] The technical solution of the utility model provides a mop driving device, including a driving motor and a transmission mechanism for driving the mop to operate;

[0006] The input end of the transmission mechanism is transmission-connected to the output end of the drive motor, and the output end of the transmission mechanism has a lifting screw for driving the mop to rise and fall;

[0007] An elastic damping member for damping the descent of the lifting screw rod when the lifting screw rod rises to the limit position is provided in the housing of the transmission mechanism, and the elastic damping member is installed above the lifting screw rod;

[0008] When the lifting screw rod rises to the limit position, the upper end of the lifting screw rod cooperates with the elastic damping member.

[0009] In one of the optional technical solutions, the elastic damping member includes a first rubber sleeve, and the lower end of the first rubber sleeve has a lower end opening;

[0010] When the lifting screw rod rises to the limit position, the upper end of the lifting screw rod is located in the first rubber sleeve.

[0011] In one of the optional technical solutions, an inwardly protruding flange is provided in the lower end opening of the first rubber sleeve.

[0012] In one of the optional technical solutions, the elastic damping member includes a second rubber sleeve, and the lower end of the second rubber sleeve is a closed end;

[0013] The upper end of the lifting screw is provided with a screw insertion hole. When the lifting screw rises to the limit position, the lower end of the second rubber sleeve is inserted and fitted in the screw insertion hole.

[0014] In one of the optional technical solutions, the mop drive device further includes a trigger switch connected to the drive motor signal;

[0015] The trigger switch is installed above the elastic damping member, wherein when the lifting screw rises to the limit position, the elastic damping member triggers the trigger switch.

[0016] In one of the optional technical solutions, the elastic damping member includes a top cover and a side enclosure connected to a side portion of the top cover and extending downward;

[0017] The bottom surface of the top cover is provided with a bottom boss for cooperating with the lifting screw;

[0018] The top surface of the top cover is provided with a top boss for triggering the trigger switch.

[0019] In one of the optional technical solutions, a top cover groove is provided on the top surface of the top cover, and the top boss is provided in the top cover groove.

[0020] In one of the optional technical solutions, a shock-absorbing rubber pad is provided on the housing of the transmission mechanism.

[0021] In one of the optional technical solutions, the transmission mechanism includes a mechanism body, a rocker arm pivotally connected to the mechanism body, and a rocker arm driving mechanism connected to the mechanism body and used to drive the rocker arm to swing;

[0022] The lifting screw is pivotally connected to the distal end of the rocker arm, and the elastic damping member is arranged in the rocker arm.

[0023] The technical solution of the utility model also provides a sweeping machine, which includes the mop drive device described in any of the above-mentioned technical solutions.

[0024] The above technical solution has the following beneficial effects:

[0025] The mop drive device and the sweeper provided by the utility model include a drive motor and a transmission mechanism, wherein the input end of the transmission mechanism is transmission-connected with the output end of the drive motor, and the output end of the transmission mechanism is provided with a lifting screw, which is used to drive the mop to rise and fall. An elastic damping member is provided in the housing of the transmission mechanism, and the elastic damping member is installed above the lifting screw, and the elastic damping member is used to damp the descent of the lifting screw that has risen to the limit position. When the lifting screw rises to the limit position, the upper end of the lifting screw cooperates with the elastic damping member, and the elastic damping member damps the screw that has risen to the limit position to automatically descend, thereby preventing the mop from automatically sliding down, thereby improving the performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0027] Figure 1 A three-dimensional diagram of a mop drive device provided in one embodiment of the utility model;

[0028] Figure 2 for Figure 1 A stereoscopic view of the mop drive device shown in another perspective;

[0029] Figure 3 A three-dimensional diagram of the connection between the transmission mechanism of the first structure and the mop;

[0030] Figure 4 for Figure 3 Exploded diagram of

[0031] Figure 5 for Figure 3 A cross-sectional view along the axial direction of the lifting screw, wherein the mop is in a raised state;

[0032] Figure 6 for Figure 3 A cross-sectional view along the axial direction of the lifting screw, wherein the mop is in a descending state;

[0033] Figure 7 is a three-dimensional image of the first rubber sleeve from a top-down perspective;

[0034] Figure 8 is a stereoscopic image of the first rubber sleeve from an upward perspective;

[0035] Fig. 9 A three-dimensional diagram of the connection between the transmission mechanism of the second structure and the mop;

[0036] Fig.10 for Fig. 9 A cross-sectional view along the axial direction of the lifting screw, wherein the mop is in a descending state;

[0037] Fig.11 for Fig. 9 Exploded diagram of

[0038] Fig.12 It is a schematic diagram of the connection between the rocker arm drive mechanism and the rocker arm transmission;

[0039] Fig.13 It is a cross-sectional view of the rocker arm and the mop assembled together;

[0040] Fig.14 is a three-dimensional diagram of the rocker arm upper housing;

[0041] Fig.15 A partial schematic diagram of a sweeping machine provided in one embodiment of the utility model. DETAILED DESCRIPTION

[0042] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. The same parts are represented by the same figure numbers. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0043] like Figure 1-6 and Figure 9-10 As shown, a mop cloth driving device provided by an embodiment of the utility model includes a driving motor 1 and a transmission mechanism 2 for driving a mop cloth 6 to operate.

[0044] The input end of the transmission mechanism 2 is transmission-connected to the output end of the driving motor 1 , and the output end of the transmission mechanism 2 has a lifting screw 25 for driving the mop 6 to move up and down.

[0045] An elastic damping member 3 for damping the descent of the lifting screw 25 that has risen to the limit position is provided in the housing of the transmission mechanism 2 . The elastic damping member 3 is installed above the lifting screw 25 .

[0046] When the lifting screw 25 rises to the limit position, the upper end of the lifting screw 25 cooperates with the elastic damping member 3 .

[0047] The mop driving device provided by the utility model is used for being installed in a sweeping machine to drive the mop 6 to operate.

[0048] The mop driving device comprises a driving motor 1 and a transmission mechanism 2. The transmission mechanism 2 is used to drive the mop 6 to operate. The input end of the transmission mechanism 2 is connected to the output end of the driving motor 1 by transmission, and the output end of the transmission mechanism 2 has a lifting screw 25, which can drive the mop 6 to rise and fall and rotate. When the driving motor 1 is running, its torque is transmitted to the lifting screw 25 through the input end of the transmission mechanism 2, and the lifting screw 25 can move up and down relative to the housing 20 of the transmission mechanism 2, thereby driving the mop 6 below to move up and down as a whole. When it is necessary to mop the floor, the driving motor 1 runs forward, and the lifting screw 25 is driven to descend and descend to the extreme position. At this time, the lifting screw 25 no longer descends but only rotates, thereby driving the mop 6 below to rotate and mop the floor. When it is necessary to perform tasks other than mopping the floor, such as vacuuming and cleaning, the driving motor 1 runs in the reverse direction, and the lifting screw 25 is driven to rise and rise to the extreme position, and the mop 6 is off the ground.

[0049] In order to prevent the mop 6 in the raised state from automatically sliding down or falling, an elastic damping member 3 is provided in the housing 20 of the transmission mechanism 2. The elastic damping member 3 can be a rubber sleeve, a rubber pad, a rubber stick, etc. The elastic damping member 3 is provided in the housing 20 of the transmission mechanism 2, and is located above the lifting screw 25. When the lifting screw 25 is in the descending state, the upper end of the lifting screw 25 leaves the elastic damping member 3. When the lifting screw 25 rises to the limit position, the upper end of the lifting screw 25 cooperates with the elastic damping member 3, and the elastic damping member 3 is squeezed by the lifting screw 25 and deformed, thereby playing a role in damping the descent of the lifting screw 25. For example, the elastic damping member 3 is a rubber sleeve, the main part of which surrounds the axis of the lifting screw 25. When the lifting screw 25 rises to the limit position, the upper end of the lifting screw 25 is inserted into the rubber sleeve, and the rubber sleeve contracts to absorb the upper end of the lifting screw 25, or the edge of the rubber sleeve abuts against the upper end of the lifting screw 25, which plays a role in damping the descent of the lifting screw 25. For example, the elastic damping member 3 is a rubber pad, which is arranged on one side of the axis of the lifting screw 25. When the lifting screw 25 rises to the limit position, the upper end of the lifting screw 25 squeezes the rubber pad on one side, and the inner side or edge of the rubber pad abuts against the upper end of the lifting screw 25, which plays a role in damping the descent of the lifting screw 25. For example, the elastic damping member 3 is a rubber stick, which is arranged directly above the lifting screw 25. A socket is provided on the top surface of the lifting screw 25. When the lifting screw 25 rises to the limit position, the rubber stick is inserted into the socket, and the surface of the socket squeezes the rubber stick. The rubber stick pulls the upper end of the lifting screw 25 to damp the descent of the lifting screw 25.

[0050] As required, a first transmission gear set 24 can be arranged in the housing 20 of the transmission mechanism 2. The input end gear of the first transmission gear set 24 is connected to the motor shaft of the drive motor 1, which can be directly connected or connected through a worm gear mechanism 27. An internal threaded hole is provided in the output end gear 241 of the first transmission gear set 24, and the lifting screw 25 passes through the internal threaded hole of the output end gear 241, and the two are threadedly connected. The output end gear 241 is connected to the housing 20 through a bearing. When the output end gear 241 rotates forward and backward, the lifting screw 25 can move up and down. The elastic damping member 3 is arranged above the output end gear 241, and a preset distance is separated therebetween.

[0051] In summary, the mop driving device provided by the utility model includes a driving motor 1 and a transmission mechanism 2, the input end of the transmission mechanism 2 is connected to the output end of the driving motor 1 by transmission, and the output end of the transmission mechanism 2 is provided with a lifting screw 25, and the lifting screw 25 is used to drive the mop 6 to rise and fall. An elastic damping member 3 is provided in the housing of the transmission mechanism 2, and the elastic damping member 3 is installed above the lifting screw 25, and the elastic damping member 3 is used to damp the lifting screw 25 that rises to the limit position to fall. When the lifting screw 25 rises to the limit position, the upper end of the lifting screw 25 cooperates with the elastic damping member 3, and the elastic damping member 3 damps the screw that rises to the limit position to automatically fall, thereby preventing the mop 6 from automatically sliding down, thereby improving the performance of the product.

[0052] For ease of assembly, the housing 20 includes a lower housing 201 and an upper housing 202 , and the upper housing 202 is mounted on the lower housing 201 by means of screws or the like. The elastic damping member 3 may be connected to the upper housing 202 .

[0053] In one embodiment, if Figure 5-8 As shown, the elastic damping member 3 includes a first rubber sleeve 31 , and the lower end of the first rubber sleeve 31 has a lower end opening 313 .

[0054] When the lifting screw 25 rises to the limit position, the upper end of the lifting screw 25 is located in the first rubber sleeve 31 .

[0055] In this embodiment, the elastic damping member 3 adopts a first rubber sleeve 31, and its lower end has a lower end opening 313. When the lifting screw 25 rises to the limit position, the upper end of the lifting screw 25 enters the first rubber sleeve 31 through the lower end opening 313 and squeezes the sleeve part of the first rubber sleeve 31. The first rubber sleeve 31 absorbs the upper end of the lifting screw 25 or the sleeve body of the first rubber sleeve 31 presses against the upper end of the lifting screw 25, which plays a role in damping the lifting screw 25 from descending.

[0056] In one embodiment, if Figure 5-8As shown, a flange 314 protruding inward is provided in the lower opening 313 of the first rubber sleeve 31. When the lifting screw 25 rises to the limit position, the flange 314 is pressed and abuts against the upper end of the lifting screw 25, providing resistance to damp the lifting screw 25 from descending.

[0057] In one embodiment, if Fig.10 and Fig.13 As shown, the elastic damping member 3 includes a second rubber sleeve 32, and the lower end of the second rubber sleeve 32 is a closed end.

[0058] The upper end of the lifting screw 25 has a screw insertion hole 251 . When the lifting screw 25 rises to the limit position, the lower end of the second rubber sleeve 32 is inserted and fitted into the screw insertion hole 251 .

[0059] In this embodiment, the elastic damping member 3 adopts a second rubber sleeve 32, the upper end of the second rubber sleeve 32 is open so as to be sleeved on the plug-in column in the housing, and the lower end of the second rubber sleeve 32 is a closed end. The upper end of the lifting screw 25 has a screw plug hole 251, and the opening of the screw plug hole 251 is located on the top surface of the lifting screw 25. When the lifting screw 25 rises to the limit position, the lower end of the second rubber sleeve 32 is inserted and fitted in the screw plug hole 251. The aperture of the screw plug hole 251 is slightly smaller than the outer diameter of the second rubber sleeve 32. The hole wall of the screw plug hole 251 squeezes the second rubber sleeve 32. After the second rubber sleeve 32 is compressed, a reaction force will be generated to provide resistance to damp the descent of the lifting screw 25.

[0060] In one embodiment, if Figure 1-6 As shown, the mop driving device further includes a trigger switch 4 connected to the driving motor 1. The trigger switch 4 is installed above the elastic damping member 3, wherein the elastic damping member 3 triggers the trigger switch 4 when the lifting screw 25 rises to the limit position.

[0061] In the prior art, the number of revolutions of the motor is calculated by software, and then combined with the transmission ratio and pitch to calculate whether the screw has reached the limit position. Before the software gives the motor a specific signal, the screw needs to remain idling, which is slow and can easily cause screw wear.

[0062] In this embodiment, the mop drive device is equipped with a trigger switch 4, which is arranged above the elastic damping member 3. When the lifting screw 25 rises to the limit position, the elastic damping member 3 is compressed and deformed, thereby triggering the trigger switch 4. The trigger switch 4 is connected to the drive motor 1 through a wire to realize signal transmission. When the lifting screw 25 rises to the limit position, the trigger switch 4 is triggered, which sends a signal to the control unit of the drive motor 1, and the drive motor 1 immediately stops, and there is no need to leave the idling time of the lifting screw 25, which is efficient and reduces the friction of the lifting screw 25. If the lifting screw 25 rises to the limit position, it is necessary to immediately lower the mop 6, then the drive motor 1 will reverse immediately, and there is no need to leave the idling time of the lifting screw 25, which is efficient.

[0063] The trigger switch 4 can be arranged on the inner side of the housing 20 or on the outer side of the housing 20. When the trigger switch 4 is arranged on the top surface of the housing 20, a through hole is arranged on the housing 20 at a position corresponding to the trigger switch 4. When the elastic damping member 3 is pressed and lifted by the upper end of the lifting screw 25, part of the elastic damping member 3 extends out of the through hole to support the button of the trigger switch 4, and the trigger switch 4 is triggered.

[0064] The trigger switch 4 can be a limit switch, a travel switch, etc.

[0065] In one embodiment, if Figure 7-8 As shown, the elastic damping member 3 includes a top cover 311 and a side enclosure 312 connected to the side of the top cover 311 and extending downward.

[0066] The bottom surface of the top cover 311 is provided with a bottom boss 3113 for cooperating with the lifting screw 25 .

[0067] A top boss 3112 for triggering the trigger switch 4 is provided on the top surface of the top cover 311 .

[0068] In this embodiment, the elastic damping member 3 includes a top cover 311 and a side enclosure 312, and the side enclosure 312 is integrally connected to the periphery of the top cover 311 and extends downward. As required, a flange can be connected to the lower edge of the side enclosure 312 so as to be clamped between the clamping plates of the housing 20. The lower end opening 313 is formed between the lower edges of the side enclosure 312, and the flange 314 is provided on the inner side of the lower edge of the side enclosure 312. As required, a notch can be provided on the side enclosure 312 to avoid the protrusion at the upper end of the lifting screw 25.

[0069] A top boss 3112 is disposed on the top surface of the top cover 311 , and a bottom boss 3113 is disposed on the bottom surface of the top cover 311 .

[0070] When the lifting screw 25 rises, its upper end will press against the bottom boss 3113, so that the top boss 3112 protrudes upward and triggers the trigger switch 4, so as to ensure that when the lifting screw 25 rises to the limit position, the elastic damping member 3 can trigger the trigger switch 4.

[0071] In one embodiment, if Figure 7 As shown, a top cover groove 3111 is provided on the top surface of the top cover 311 , and a top boss 3112 is provided in the top cover groove 3111 .

[0072] In this embodiment, by providing a top cover groove 3111 on the top surface of the top cover 311, and providing the top boss 3112 in the top cover groove 3111, in a normal state, the top boss 3112 will not protrude from the top cover groove 3111, thereby not triggering the trigger switch 4. When the lifting screw 25 is raised, the bottom boss 3113 presses against the top boss 3112, the groove wall of the top cover groove 3111 is deformed, and the top boss 3112 protrudes from the top cover groove 3111 to trigger the trigger switch 4.

[0073] Preferably, the groove wall of the top cover groove 3111 is the side surrounding portion of the bottom boss 3113. The top cover 311, the top boss 3112 and the bottom boss 3113 are integrally formed.

[0074] In one embodiment, a shock-absorbing rubber pad is provided on the housing 20 of the transmission mechanism 2 to achieve a shock-absorbing effect.

[0075] In one embodiment, if Figure 1-2 , Figure 9-14 As shown, the transmission mechanism 2 includes a mechanism body 21, a rocker arm 22 pivotally connected to the mechanism body 21, and a rocker arm driving mechanism 23 connected to the mechanism body 21 and used for driving the rocker arm 22 to swing.

[0076] The lifting screw 25 is pivotally connected to the distal end of the rocker arm 22 , and the elastic damping member 3 is disposed in the rocker arm 22 .

[0077] In this embodiment, the transmission mechanism 2 is provided with a rocker arm 22, which can drive the mop 6 below to extend so as to clean a farther area and reduce sanitary blind spots.

[0078] The transmission mechanism 2 includes a mechanism body 21, a rocker arm 22 and a rocker arm driving mechanism 23. The housing of the mechanism body 21 and the housing of the rocker arm 22 together constitute a housing 20 of the transmission mechanism 2.

[0079] One end of the rocker arm 22 is pivotally connected to the mechanism body 21, and the rocker arm 22 can swing relative to the mechanism body 21. The end of the rocker arm 22 pivotally connected to the mechanism body 21 is called the proximal end, and the other end of the rocker arm 22 is called the distal end. The lifting screw 25 is pivotally connected to the distal end of the rocker arm 22, and the elastic damping member 3 is disposed in the housing of the rocker arm 22.

[0080] The rocker arm driving mechanism 23 may be a piston mechanism or a motor mechanism. The output end of the rocker arm driving mechanism 23 is connected to the rocker arm 22 for driving the rocker arm 22 to swing relative to the mechanism body 21 .

[0081] Specifically, the housing of the mechanism body 21 includes a body lower housing 211 and a body upper housing 212 detachably connected to the body lower housing 211. The housing of the rocker arm 22 includes a rocker arm lower housing 221 and a rocker arm upper housing 222 detachably connected to the rocker arm lower housing 221.

[0082] A first transmission gear set 24 is configured in the housing of the mechanism body 21. A first transmission gear set 24 is also configured in the housing of the rocker arm 22. The two first transmission gear sets 24 are connected in transmission. The output end gear 241 is arranged in the housing of the rocker arm 22 and is located at the distal end of the rocker arm 22. The input end gear of the first transmission gear set 24 of the mechanism body 21 is directly connected to the motor shaft of the drive motor 1 or connected through a worm gear mechanism 27. The output end gear 241 is installed in the lower housing 221 of the rocker arm through a bearing, and the lifting screw 25 cooperates with the output end gear 241. A cover 224 is provided at a position corresponding to the output end gear 241 on the upper housing 222 of the rocker arm, which is used to accommodate the upper end of the lifting screw 25, and the elastic damping member 3 is arranged in the cover 224.

[0083] The elastic damping member 3 in this embodiment preferably adopts a second rubber sleeve 32 or a rubber stick. A plug post extending downward is provided in the cover 224, and the second rubber sleeve 32 is sleeved on the plug post.

[0084] In one embodiment, if Figure 9-14As shown, the proximal end of the rocker arm 22 is connected to the mechanism body 21 through a rotating shaft 242. A transmission sleeve 223 is integrally provided on the upper housing 222 of the rocker arm. The rotating shaft 242 is a part of the first transmission gear set 24, which is used to receive two sets of the first transmission gear sets 24. The output gear 243 of a set of the first transmission gear set 24 installed in the mechanism body 21 is fixedly sleeved on the upper part of the rotating shaft 242, and is used to drive the rotating shaft 242 to rotate. The rotating shaft 242 passes downward through the transmission sleeve 223 and extends into the housing of the rocker arm 22. The rotating shaft 242 and the transmission sleeve 223 are in clearance fit, and the rotating shaft 242 can rotate relative to the transmission sleeve 223. The input gear 244 of a set of the first transmission gear set 24 installed in the rocker arm 22 is fixedly sleeved on the lower part of the rotating shaft 242, and then drives the output end gear 241 to rotate through the gear, thereby driving the lifting screw 25 to move up and down.

[0085] The output end of the rocker arm driving mechanism 23 is connected to the transmission sleeve 223 to drive the rocker arm 22 to swing relative to the rotating shaft 242 .

[0086] In one embodiment, if Figure 11-12 and Fig.14 As shown, the rocker arm driving mechanism 23 includes a driving motor 231, and a second transmission gear set 26 is arranged in the housing of the mechanism body 21, and the second transmission gear set 26 does not interfere with the first transmission gear set 24 in the mechanism body 21. The second transmission gear set 26 is used to drive the transmission sleeve 223 to rotate relative to the rotating shaft 242, thereby driving the rocker arm 22 to swing.

[0087] The second transmission gear set 26 includes a driving gear 261 sleeved on the rotating shaft 242. The rotating shaft 242 is provided with a plurality of vertical ribs, and correspondingly, the central hole of the driving gear 261 is provided with a plurality of grooves, and the vertical ribs cooperate in the grooves to play an anti-rotation role.

[0088] An intermediate gear 265 and a transmission gear 262 are meshed and driven between the motor shaft of the driving motor 231 and the driving gear 261, and the transmission gear 262 meshes and drives with the driving gear 261. When the driving motor 231 is running, the transmission gear 262 is driven to rotate by the intermediate gear 265, and the transmission gear 262 drives the driving gear 261 to rotate, so as to drive the rocker arm 22 to swing.

[0089] In one embodiment, if Fig.12As shown, the transmission gear 262 is provided with a clutch gear 263 that can move up and down, and the top of the clutch gear 263 is provided with a compression spring 264. The upper end of the compression spring 264 is fixed to the main body upper shell 212. The top of the transmission gear 262 and the bottom of the clutch gear 263 are respectively provided with concave and convex parts. In normal state, under the action of the compression spring 264, the concave and convex parts of the clutch gear 263 are engaged with the concave and convex parts of the transmission gear 262, and the intermediate gear 265 is engaged with the clutch gear 263. The torque of the driving motor 231 can be transmitted to the driving gear 261 through the intermediate gear 265, the clutch gear 263, and the transmission gear 262.

[0090] When the mop cloth 6 below is subjected to a large resistance during the swinging of the swing arm 22, the swing arm 22 cannot swing effectively. At this time, the reaction force will be transmitted to the driving gear 261, and the driving gear 261 cannot rotate, and the transmission gear 262 will not rotate. At this time, when the clutch gear 263 rotates, the concave and convex parts of the clutch gear 263 and the concave and convex parts of the transmission gear 262 will slide, thereby compressing the compression spring 264, and the clutch gear 263 will not drive the transmission gear 262 to rotate, thereby avoiding damage to the drive motor 231.

[0091] The above-mentioned concave-convex parts can be set as a plurality of tooth-shaped protrusions and grooves, and both sides of the protrusions and grooves are inclined surfaces, so that the concave-convex parts on the upper and lower sides can bite and separate.

[0092] In one embodiment, if Figure 1-2 As shown, a pair of limit sensors 5 are provided below the housing of the mechanism body 21, which are located on both sides of the rocker arm 22, for monitoring whether the rocker arm 22 is reset and swung to the limit position. The limit sensors 5 are connected to the control unit of the rocker arm drive mechanism 23 through a wire to achieve signal transmission.

[0093] like Fig.15 As shown, a sweeping machine provided by one embodiment of the utility model includes the mop driving device described in any of the aforementioned embodiments.

[0094] The sweeping machine comprises a base 7, a mop 6 is mounted below the base 7, and a mop driving device is mounted on the base 7. A lifting screw 25 passes through a through hole on the base 7 to be connected with the mop 6.

[0095] According to the needs, the sweeping machine can be equipped with one mop 6 or two mops 6 .

[0096] When the sweeping machine is equipped with a mop 6 , its transmission mechanism 2 may adopt a structure without a rocker arm 22 or a structure with a rocker arm 22 .

[0097] When the sweeping machine is equipped with two mops 6 , two output ends of the driving motor 1 are respectively connected to a set of transmission mechanisms 2 . Preferably, one set of transmission mechanisms 2 adopts a structure without a rocker arm 22 , and the other set of transmission mechanisms 2 adopts a structure with a rocker arm 22 .

[0098] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0099] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the protection scope of the present invention.

Claims

1. A mop driving device, characterized in that: It includes a driving motor and a transmission mechanism for driving the mop to operate; The input end of the transmission mechanism is transmission-connected to the output end of the drive motor, and the output end of the transmission mechanism has a lifting screw for driving the mop to rise and fall; An elastic damping member for damping the descent of the lifting screw rod when the lifting screw rod rises to the limit position is provided in the housing of the transmission mechanism, and the elastic damping member is installed above the lifting screw rod; When the lifting screw rod rises to the limit position, the upper end of the lifting screw rod cooperates with the elastic damping member.

2. The mop driving device according to claim 1, characterized in that: The elastic damping member comprises a first rubber sleeve, and the lower end of the first rubber sleeve has a lower end opening; When the lifting screw rod rises to the limit position, the upper end of the lifting screw rod is located in the first rubber sleeve.

3. The mop driving device according to claim 2, characterized in that: An inwardly protruding flange is provided in the lower end opening of the first rubber sleeve.

4. The mop driving device according to claim 1, characterized in that: The elastic damping member comprises a second rubber sleeve, and the lower end of the second rubber sleeve is a closed end; The upper end of the lifting screw is provided with a screw insertion hole. When the lifting screw rises to the limit position, the lower end of the second rubber sleeve is inserted and fitted in the screw insertion hole.

5. The mop driving device according to claim 1, characterized in that: The mop drive device also includes a trigger switch connected to the drive motor signal; The trigger switch is installed above the elastic damping member, wherein when the lifting screw rises to the limit position, the elastic damping member triggers the trigger switch.

6. The mop driving device according to claim 5, characterized in that: The elastic damping member includes a top cover and a side enclosure connected to the side of the top cover and extending downward; The bottom surface of the top cover is provided with a bottom boss for cooperating with the lifting screw; The top surface of the top cover is provided with a top boss for triggering the trigger switch.

7. The mop driving device according to claim 6, characterized in that: A top cover groove is provided on the top surface of the top cover, and the top boss is arranged in the top cover groove.

8. The mop driving device according to claim 1, characterized in that: A shock-absorbing rubber pad is arranged on the housing of the transmission mechanism.

9. The mop driving device according to claim 1, characterized in that: The transmission mechanism comprises a mechanism body, a rocker arm pivotally connected to the mechanism body, and a rocker arm driving mechanism connected to the mechanism body and used to drive the rocker arm to swing; The lifting screw is pivotally connected to the distal end of the rocker arm, and the elastic damping member is arranged in the rocker arm.

10. A sweeping machine, characterized in that: The invention comprises a mop driving device as claimed in any one of claims 1 to 9.

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