Liftable moving device and household appliance

Abstract

The device comprises a trundle assembly, a driving assembly and a transmission assembly, the trundle assembly comprises a trundle support, a trundle shaft and trundles installed at the two ends of the trundle shaft, and a strip-shaped hole obliquely extending relative to the horizontal direction is formed in the trundle support; the trundle shaft moves in the strip-shaped hole in the extending direction of the strip-shaped hole. The driving assembly comprises a driving mechanism and a traction piece connected with the driving mechanism, and the driving mechanism drives the traction piece to generate traction force; the transmission assembly comprises a rotatable transmission rod, and the transmission rod is connected with the traction piece and rotates under the action of traction force, so that one end of the transmission rod abuts against the trundle shaft, the trundle shaft is pushed to move in the extending direction of the strip-shaped hole, and the trundle is supported on the ground; or when the traction force is lost, the transmission rod and the trundle shaft are respectively reset, so that the trundle is suspended, the automatic lifting of the trundle is realized, the household appliance is convenient to move and carry, and time and labor are saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of liftable devices, and in particular, relates to a liftable mobile device and household electrical appliances. Background Art

[0002] At present, with the improvement of people's living standards, various kinds of furniture and electrical appliances are gradually entering people's lives. Most of the existing household appliances do not have movable supporting devices at the bottom, so their moving or movement requires many people to lift them, which is time-consuming and labor-intensive, and brings many inconveniences to people. In real life, not only the equipment needs to be moved, but the equipment also needs to be raised to a certain height. Therefore, it is considered to use tools to complete it, how to easily move heavier equipment with less effort.

[0003] In order to enable equipment to have more and more functions and high utilization, rollers have become an indispensable component. Generally, rollers refer to small wheels set at the bottom of equipment to facilitate the movement of bulky equipment. However, most of the existing equipment has fixed rollers at the bottom, which can only achieve movement but not lifting. Even if it can achieve lifting, most lifting equipment needs to be manually operated, which is inconvenient to use and requires a large space, limiting the scope of use.

[0004] The Chinese patent application number 201410137755.6 discloses a washing machine that is easy to carry. Four rollers are installed at the four corners of the bottom of the washing machine. Through these four rollers, the user can push the washing machine to the destination with very little force; in addition, four lifting screws are installed at the bottom of the washing machine, which can be lifted and lowered by rotation. When the washing machine is needed, the lifting screws are lowered to support the washing machine, so that the four rollers are suspended in the air, so that the washing machine remains stable on the ground and does not move. When the washing machine needs to be moved, the lifting screws are raised to let the four rollers fall to the ground, and the washing machine can be moved by pushing the rollers. Although the solution disclosed in this patent can realize the movement and lifting of the washing machine, the user needs to squat and rotate the lifting screws to make the rollers suspended in the air or support the ground. Due to the relatively heavy weight of the washing machine, it will still cause certain operating difficulties for the user, and manual operation is inconvenient to use, and the user experience is poor.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a liftable and movable device, in which the driving mechanism drives the traction member to generate traction force, so that the transmission rod rotates under the action of the traction force, and one end of the transmission rod abuts against the caster shaft, pushing the caster shaft to move and driving the caster to move along the extension direction of the strip hole, thereby making the caster support the ground. There is no need to manually provide the driving force for lifting and lowering, which saves time and effort and can effectively improve the user experience.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a lifting and moving device, comprising:

[0008] A caster assembly, comprising a caster bracket, a caster shaft movable relative to the caster bracket, and casters mounted at both ends of the caster shaft, wherein the caster bracket is provided with a strip hole extending obliquely relative to the horizontal direction, and the caster shaft moves in the strip hole along the extension direction of the strip hole;

[0009] A driving assembly, comprising a driving mechanism and a traction member connected to the driving mechanism, wherein the driving mechanism drives the traction member to generate traction;

[0010] The transmission assembly includes a rotatable transmission rod, which is connected to the traction member and rotates under the action of traction, so that one end of the transmission rod abuts against the caster shaft, pushing the caster shaft to move along the extension direction of the strip hole.

[0011] Furthermore, the transmission assembly also includes:

[0012] Fixed plate;

[0013] A rotating shaft, disposed on the fixed plate and rotatably connected to the transmission rod;

[0014] A rotating wheel shaft is arranged at one end of the transmission rod close to the caster shaft;

[0015] A rotating wheel rotatably mounted on the rotating wheel shaft;

[0016] The transmission rod rotates under the action of traction force, so that the rotating wheel abuts against the caster shaft.

[0017] In the above scheme, the rotating shaft not only serves to rotatably fix the transmission rod on the fixed plate, but also serves as the center point of the transmission rod when it rotates, and the transmission rod rotates around the center point.

[0018] The rotating wheel is in contact with the caster shaft to provide a force to push the caster shaft to drive the caster to move. The rotating wheel is arranged to be rotatable. When abutting, the rotation of the rotating wheel reduces the friction between the caster shaft, reduces noise, and extends the service life of the component.

[0019] Furthermore, the transmission assembly also includes a first elastic member, one end of which is connected to the fixing plate, and the other end of which is connected to one end of the transmission rod and the traction member.

[0020] Furthermore, the caster assembly further comprises a second elastic member, one end of which is connected to the fixing plate, and the other end of which is connected to the caster shaft;

[0021] Preferably, the first elastic member and the second elastic member are elastic tension springs.

[0022] Further, the liftable movable device has a first state and a second state;

[0023] In the first state, the driving mechanism drives the traction member to generate traction force, and the transmission rod rotates under the action of the traction force, so that the rotating wheel abuts against the caster shaft, pushes the caster shaft to move and drives the caster to move downward along the extension direction of the strip hole, the first elastic member is in the second stretching state, and the second elastic member is in the fourth stretching state;

[0024] In the second state, the transmission rod loses the effect of traction and rotates in the opposite direction to reset under the pulling force of the first elastic member, so that there is a gap between the rotating wheel and the caster shaft, and the caster shaft moves in the opposite direction along the extension direction of the strip hole under the pulling force of the second elastic member, the first elastic member is in the first stretched state, and the second elastic member is in the third stretched state;

[0025] The tension of the first elastic member in the second stretched state is greater than the tension of the first stretched state, and the tension of the second elastic member in the fourth stretched state is greater than the tension of the third stretched state.

[0026] Furthermore, a movable track is provided on the fixed plate, and one end of the transmission rod connected to the traction member moves along the extension direction of the movable track.

[0027] Furthermore, the transmission assembly includes a sliding block, which is movably arranged in the moving track and is respectively connected to the transmission rod and the traction member;

[0028] Preferably, the movable track is arc-shaped.

[0029] Furthermore, the driving assembly also includes a rotatable fixed pulley, and the traction member is supported on the fixed pulley for adjusting the traction direction of the traction member.

[0030] In the above scheme, by setting up a movable track and a fixed pulley, it is convenient for the traction member to provide traction to the transmission rod, so that the transmission rod moves along the extension direction of the movable track according to the traction direction of the traction member, avoiding a large difference between the traction direction and the moving direction, which causes the transmission rod to be unable to move into place, effectively reducing the parameter requirements for the driving mechanism and reducing costs.

[0031] Furthermore, two ends of the strip-shaped hole are extended in the horizontal direction to form support parts for supporting the caster shaft;

[0032] The horizontal distance between the support parts is less than or equal to the distance between the rotating shaft and the end of the rotating wheel.

[0033] In the above scheme, by providing horizontally arranged support parts at both ends of the strip hole, a stable support point can be provided for the caster shaft, which is convenient for the stable placement of the caster shaft, and further provides stable support force for the caster to be suspended in the air or support the ground.

[0034] By making the horizontal distance between the support parts smaller than or equal to the distance between the rotating shaft and the end of the rotating wheel, it is ensured that the rotation of the transmission rod can realize the movement of the caster shaft between the two support parts, thereby ensuring that the caster can be raised and lowered.

[0035] A household appliance has a liftable movable device as described above. The household appliance comprises a base, and the caster bracket, the driving assembly and the transmission assembly are all fixed on the bottom surface of the base.

[0036] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0037] 1. The present invention provides a liftable movable device, which drives the traction member to generate traction force through a driving mechanism, so that the transmission rod rotates under the action of the traction force, and makes one end of the transmission rod provided with a rotating wheel abut against the caster shaft, thereby pushing the caster shaft to move and driving the caster to move along the extension direction of the strip hole, so that the caster supports the ground; and when the transmission rod loses the effect of traction force, it rotates in the opposite direction to reset under the pulling force of the first elastic member, and at the same time, the caster shaft moves in the opposite direction along the extension direction of the strip hole under the pulling force of the second elastic member, so that the caster is suspended, thereby realizing automatic control of the caster lifting and lowering, and there is no need to manually provide the driving force for lifting and lowering, which saves time and effort and can effectively improve the user experience.

[0038] 2. In the present invention, by setting a movable track and a fixed pulley, it is convenient for the traction member to provide traction to the transmission rod, so that the transmission rod moves along the extension direction of the movable track according to the traction direction of the traction member, avoiding a large difference between the traction direction and the moving direction, which causes the transmission rod to be unable to move into place, effectively reducing the parameter requirements for the driving mechanism and reducing costs.

[0039] 3. The present invention provides a stable support point for the caster shaft by providing horizontally arranged support parts at both ends of the strip hole, which is convenient for the stable placement of the caster shaft, and further provides a stable supporting force for the caster to be suspended in the air or support the ground.

[0040] 4. The present invention ensures that the rotation of the transmission rod can realize the movement of the caster shaft between the two support parts, thereby ensuring that the caster can be raised and lowered, by making the horizontal distance between the support parts less than or equal to the distance between the rotating shaft and the end of the rotating wheel.

[0041] 5. The present invention also provides a household appliance having a lifting and moving device as described above, so that the household appliance is easy to lift, move and transport, and has the characteristics of simple structure, easy use and low cost.

[0042] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings are part of this application and are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0044] Figure 1 is a schematic structural diagram of the liftable movable device in the present invention when it is in the second state;

[0045] Figure 2 is a schematic structural diagram of the liftable movable device in the present invention when it is in a first state;

[0046] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0047] Figure 4 It is a schematic diagram of the structure of the caster bracket in the present invention;

[0048] Figure 5 Schematic diagram of the inclination angle of the strip-shaped holes in the present invention;

[0049] Figure 6 is a structural side view of the washing machine when the liftable movable device of the present invention is in the second state;

[0050] Figure 7 is a schematic diagram of the bottom structure of the washing machine when the liftable movable device of the present invention is in the second state;

[0051] Figure 8is a structural side view of the washing machine when the liftable movable device of the present invention is in the first state;

[0052] Fig. 9 It is a schematic diagram of the bottom structure of the washing machine when the liftable movable device in the present invention is in the first state.

[0053] In the figure: 110, caster bracket; 111, strip hole; 1111, support part; 112, opening; 113, mounting part; 120, caster shaft; 130, reinforcement plate; 131, positioning groove; 140, support rod; 150, caster; 160, second elastic member; 210, driving mechanism; 220, traction member; 230, fixed pulley; 310, fixed plate; 320, rotating shaft; 330, transmission rod; 340, sliding block; 350, rotating wheel shaft; 360, rotating wheel; 370, moving track; 380, first elastic member; 400, washing machine; 410, box; 420, handle; 430, fixed foot.

[0054] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0056] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "abutted" and the like should be understood in a broad sense, for example, it can be a detachable connection, a mechanical connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Since most existing household appliances do not have a movable load-bearing device at the bottom, it is time-consuming and laborious to move or carry them. Even if casters are installed at the bottom, users still need to spend effort to make the casters suspended in the air or support the ground. When the weight of the household appliance is heavy, it will cause certain operating difficulties for the user. In order to solve this problem, the present application provides a lifting and moving device and household appliance, which generates a driving force through a driving component, transmits the driving force to the caster shaft through a transmission component, drives the caster shaft to drive the caster to move up and down relative to the caster bracket, so that the caster is suspended in the air or supports the ground, and realizes automatic lifting of the device. Compared with the traditional manual lifting, it saves time and effort. The specific improvements are as follows:

[0059] like Figures 1 to 9 As shown, the present invention provides a liftable mobile device, including a caster assembly, a drive assembly and a transmission assembly, the caster assembly including a caster bracket 110, a second elastic member 160 and a support module, the support module including a reinforcing plate 130, a support rod 140, a caster shaft 120, and a caster 150, the reinforcing plate 130 is provided with a positioning groove 131, the caster bracket 110 is provided with a strip hole 111, and support portions 1111 are provided at both ends of the strip hole 111; the drive assembly includes a drive mechanism 210, a traction member 220, and a fixed pulley 230; the transmission assembly includes a fixed plate 310, a rotating shaft 320, a transmission rod 330, a sliding block 340, a rotating wheel shaft 350, a rotating wheel 360, and a first elastic member 380, and the fixed plate 310 is provided with a movable track 370.

[0060] As an embodiment, the present invention provides a lifting and moving device, such as Figure 1 and Figure 2 As shown, the device includes a caster assembly, a drive assembly and a transmission assembly.

[0061] The caster assembly includes a support module, and the support module includes a support rod 140 , a caster shaft 120 , and a caster 150 .

[0062] The support rods 140 include two, which are symmetrically distributed in the left-right direction; the caster shafts 120 include two, which are symmetrically distributed in the front-back direction, and the two support rods 140 and the ends of the two caster shafts 120 are connected in sequence to form a rectangular support frame.

[0063] The casters 150 include four wheels, which are rotatably mounted on the two ends of the two caster shafts 120 and distributed at the four corners of the rectangular support frame to form a support module. The casters 150 can be universal wheels.

[0064] The caster assembly further includes a caster bracket 110 , and the support module is movable relative to the caster bracket 110 .

[0065] The caster brackets 110 include four, and one caster bracket 110 is correspondingly provided at the position of each caster 150 .

[0066] like Figure 4 As shown, the interior of the caster bracket 110 is hollow, a mounting portion 113 is provided on the top, an opening 112 is provided on the bottom, and a strip hole 111 is provided on the side wall and extends obliquely relative to the horizontal direction. The caster shaft 120 passes through the strip hole 111 and is arranged on the caster bracket 110. The caster 150 is arranged at the end of the caster shaft 120 through the opening 112 and is located inside the caster bracket 110.

[0067] Due to the setting angle of the strip hole 111, the caster shaft 120 can move horizontally and up and down in the strip hole 111. When the caster shaft 120 moves upward along the extension direction of the strip hole 111, it will drive the caster 150 to be retracted into the caster bracket 110 through the opening 112, so that the caster 150 is suspended in the air; when the caster shaft 120 moves downward along the extension direction of the strip hole 111, it will drive the caster 150 to leak out of the caster bracket 110 through the opening 112, so that the caster 150 supports the ground, thereby realizing that the caster 150 is suspended in the air or supports the ground.

[0068] like Figure 5 As shown, the included angle between the extension direction of the strip hole 111 and the horizontal direction is α, which satisfies 20°≤α≤50°.

[0069] By controlling the angle between the extension direction of the strip hole 111 and the horizontal direction within the above range, it is more conducive to the caster shaft 120 to move up and down along the extension direction of the strip hole 111, providing a track for the caster shaft 120 to facilitate movement.

[0070] Both ends of the strip hole 111 extend in the horizontal direction to form support parts 1111, which can provide a stable support point for the caster shaft 120, facilitate the stable placement of the caster shaft 120, and further provide stable support force for the caster 150 to be suspended in the air or support the ground.

[0071] like Figure 1 and Figure 2 As shown, the driving assembly includes a driving mechanism 210 and a traction member 220 connected to the driving mechanism 210 , and the driving mechanism 210 drives the traction member 220 to generate traction force.

[0072] The driving mechanism 210 includes a motor, and the traction member 220 includes a traction rope. When the motor works, the length of the traction rope is changed to generate or lose traction.

[0073] Specifically, when the household appliance needs to be moved, the motor is controlled to rotate, the traction rope is retracted, and traction is generated on the transmission rod 330. When the caster 150 supports the ground, the motor stops working; when the household appliance moves to a specified position, the motor is controlled to rotate in the opposite direction, the traction rope is released, and traction is lost on the transmission rod 330. When the caster 150 is suspended to a specified height, the motor stops working.

[0074] It should be noted that the motor includes a motor shaft, and the traction rope is wound around the motor shaft by driving the motor shaft to rotate, and the traction rope is retracted; or, the wound traction rope is released by driving the motor shaft to rotate in the opposite direction.

[0075] The transmission assembly includes a fixed plate 310 , on which a rotating shaft 320 , a rotatable transmission rod 330 , a sliding block 340 , a rotating wheel shaft 350 , a rotating wheel 360 , a first elastic member 380 , and a moving track 370 are disposed.

[0076] The rotating shaft 320 is fixedly mounted on the fixed plate 310 and is rotatably connected to the transmission rod 330. The rotating shaft 320 not only serves to rotatably fix the transmission rod 330 on the fixed plate 310, but also serves as the center point of the transmission rod 330 when it rotates, and the transmission rod 330 rotates around the center point.

[0077] The transmission rod 330 is connected to the traction member 220 and rotates under the action of traction, so that one end of the transmission rod 330 abuts against the caster shaft 120, pushing the caster shaft 120 to move and drive the caster 150 to move downward along the extension direction of the strip hole 111.

[0078] When the caster shaft 120 drives the caster 150 to move, the entire support module moves together.

[0079] Furthermore, the rotating wheel shaft 350 is disposed at one end of the transmission rod 330 close to the caster shaft 120 , and the rotating wheel 360 is rotatably mounted on the rotating wheel shaft 350 .

[0080] The transmission rod 330 rotates under the action of traction, so that the rotating wheel 360 abuts against the caster shaft 120 .

[0081] When the rotating wheel 360 abuts against the caster shaft 120 and provides a force to push the caster shaft 120 to drive the caster 150 to move, the rotating wheel 360 is set to be rotatable. When abutting, the rotation of the rotating wheel 360 reduces the friction between the caster shaft 120, reduces noise, and extends the service life of the components.

[0082] It should be noted that the horizontal distance between the support portions 1111 is less than or equal to the distance between the rotating shaft 320 and the end of the rotating wheel 360 .

[0083] By making the horizontal distance between the support parts 1111 less than or equal to the distance between the rotating shaft 320 and the end of the rotating wheel 360, it is ensured that the rotation of the transmission rod 330 can realize the movement of the caster shaft 120 between the two support parts 1111, thereby ensuring that the caster 150 can be raised and lowered.

[0084] Furthermore, one end of the transmission rod 330 connected to the traction member 220 moves along the extension direction of the moving track 370 .

[0085] Furthermore, the sliding block 340 is movably disposed in the moving track 370 and is connected to the transmission rod 330 and the traction member 220 respectively.

[0086] Preferably, the movable track 370 is arc-shaped.

[0087] Preferably, the fixed plate 310 is provided with a protruding arrangement on one side of the movable track 370 , so that the end of the transmission rod 330 connected to the traction member 220 can move along the extension direction of the arc-shaped movable track 370 on the basis of minimizing the material used for the fixed plate 310 .

[0088] Furthermore, one end of the first elastic member 380 is connected to the fixing plate 310 , and the other end is connected to one end of the transmission rod 330 connected to the traction member 220 .

[0089] Furthermore, the caster assembly further includes a second elastic member 160 , one end of the second elastic member 160 is connected to the fixing plate 310 , and the other end of the second elastic member 160 is connected to the caster shaft 120 .

[0090] At least two second elastic members 160 are provided, respectively located at two ends of the caster shaft 120 , so that the caster shaft 120 is subjected to balanced force.

[0091] The liftable movable device has a first state and a second state:

[0092] In the first state, the driving mechanism 210 drives the traction member 220 to generate traction, and the transmission rod 330 rotates under the action of the traction, so that the rotating wheel 360 abuts against the caster shaft 120, pushing the caster shaft 120 to move and drive the caster 150 to move downward along the extension direction of the strip hole 111, the first elastic member 380 is in the second tension state, the second elastic member 160 is in the fourth tension state, and the caster 150 supports the ground. Figure 2 As shown;

[0093] In the second state, the transmission rod 330 loses the effect of traction and rotates in the opposite direction to reset under the pulling force of the first elastic member 380, so that there is a gap between the rotating wheel 360 and the caster shaft 120. The first elastic member 380 is in the first stretched state. The caster shaft 120 drives the caster 150 to move upward along the extension direction of the strip hole 111 under the pulling force of the second elastic member 160. The second elastic member 160 is in the third stretched state, and the caster 150 is suspended. Figure 1 shown.

[0094] The tension of the first elastic member 380 when it is in the second tension state is greater than the tension of the first tension state.

[0095] The tension of the second elastic member 160 when it is in the fourth stretched state is greater than the tension of the second elastic member 160 when it is in the third stretched state.

[0096] Preferably, the first elastic member 380 and the second elastic member 160 are elastic tension springs.

[0097] Preferably, the rotation angle of the transmission rod 330 is 90°, that is, the end of the transmission rod 330 provided with the rotating wheel 360 rotates from a horizontal state to a vertical state.

[0098] Furthermore, the driving assembly further includes a rotatable fixed pulley 230 , on which the traction member 220 is supported, for adjusting the traction direction of the traction member 220 .

[0099] By setting the movable track 370 and the fixed pulley 230, it is convenient for the traction member 220 to provide traction to the transmission rod 330, so that the transmission rod 330 moves along the extension direction of the movable track 370 according to the traction direction of the traction member 220, thereby avoiding a large difference between the traction direction and the moving direction, which causes the transmission rod 330 to be unable to move into place, effectively reducing the parameter requirements for the driving mechanism 210 and reducing costs.

[0100] Furthermore, the support module further includes a reinforcing plate 130 . The reinforcing plates 130 include two reinforcing plates 130 , which are respectively fixedly connected to two caster shafts 120 . The reinforcing plates 130 are at least partially located between the two caster shafts 120 .

[0101] like Figure 3 As shown, a positioning groove 131 is provided on the reinforcing plate 130 located between the two caster shafts 120 .

[0102] When the transmission rod 330 rotates under the action of traction, the rotating wheel 360 abuts against the reinforcing plate 130, pushing the reinforcing plate 130 to move and driving the entire supporting module to move, so that the caster 150 moves downward along the extension direction of the strip hole 111, and the caster 150 supports the ground. At this time, the rotating wheel 360 is located in the positioning groove 131 of the reinforcing plate 130 to prevent the rotating wheel 360 from moving, thereby further improving the stability of the caster 150 supporting the ground.

[0103] It should be noted that the number and positions of the reinforcing plate 130 , the support rod 140 , the caster shaft 120 , the caster 150 , the caster bracket 110 , the first elastic member 380 , the second elastic member 160 , etc. can be set as needed.

[0104] As an embodiment, the present invention provides a household appliance having a liftable movable device as described above.

[0105] The household appliance comprises a base, and the caster bracket 110, the driving assembly and the transmission assembly are all fixed on the bottom surface of the base.

[0106] It should be noted that the caster bracket 110 and the drive assembly can also be fixed on the fixed plate 310 of the transmission assembly, and then the fixed plate 310 is fixed on the bottom surface of the base; or the caster bracket 110, the drive assembly and the transmission assembly can be fixed on the bottom surface of the base respectively.

[0107] Fixed feet 430 are respectively provided at the four corners of the base. When the caster 150 is suspended in the air, the fixed feet 430 support the ground; when the caster 150 supports the ground, the fixed feet 430 are suspended in the air.

[0108] The household appliance may also be provided with a handle 420 to facilitate movement and transportation of the household appliance.

[0109] Taking the household appliance as a washing machine 400 as an example, specifically:

[0110] The washing machine 400 includes a housing 410 , a handle 420 is provided on the top of the housing 410 , and a lifting and moving device is provided at the bottom of the housing 410 .

[0111] When the washing machine 400 is in operation, the transmission rod 330 is located at the initial position, a gap is formed between the rotating wheel 360 and the caster shaft 120 or the reinforcing plate 130, the first elastic member 380 is in the first stretched state, the second elastic member 160 is in the third stretched state, the fixed foot 430 supports the ground, and the caster 150 is suspended. Figure 6 and Figure 7 As shown;

[0112] When the washing machine 400 is in a non-working state and needs to be moved, the driving mechanism 210 starts to work, so that the traction member 220 generates traction, and the transmission rod 330 rotates under the action of the traction, so that the rotating wheel 360 abuts against the caster shaft 120 or the reinforcing plate 130, pushing the caster shaft 120 to move and driving the caster 150 to move downward along the extension direction of the strip hole 111, the first elastic member 380 is in the second stretching state, the second elastic member 160 is in the fourth stretching state, the fixed foot 430 is suspended, the caster 150 supports the ground, and the driving mechanism 210 stops working. At this time, it is convenient for the user to use the handle 420 to move the washing machine 400. Figure 8 and Fig. 9 As shown;

[0113] When it moves to the specified position, the driving mechanism 210 starts to work, so that the traction member 220 loses the traction force, the transmission rod 330 loses the traction force, and rotates in the opposite direction to reset to the initial position under the pulling force of the first elastic member 380. The first elastic member 380 returns to the first stretched state. At the same time, the caster shaft 120 drives the caster 150 to move upward along the extension direction of the strip hole 111 under the pulling force of the second elastic member 160. The second elastic member 160 returns to the third stretched state, the fixed foot 430 supports the ground, the caster 150 is suspended, and the driving mechanism 210 stops working, so that the washing machine 400 can work again. Figure 6 and Figure 7 shown.

[0114] The liftable movable device does not occupy much space of the washing machine, is convenient for users to move the washing machine, is easy to use, expands the functions of the washing machine, can embed the washing machine into furniture such as cabinets, and improves the user experience.

[0115] It should be noted that the opening of the drive mechanism 210 can be remotely controlled through a mobile terminal, or the opening of the drive mechanism 210 can be controlled by voice, and a button for controlling the opening of the drive mechanism 210 can be set on the control panel, thereby controlling the lifting and lowering of the caster 150; when the caster 150 supports the ground or is suspended to a specified height, the drive mechanism 210 is automatically closed, and the information that the caster 150 supports the ground or is suspended to a specified height can be obtained by setting a detection device.

[0116] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A lifting and moving device, characterized in that: include: A caster assembly comprises a caster bracket (110), a caster shaft (120) movable relative to the caster bracket (110), and casters (150) mounted at both ends of the caster shaft (120), wherein the caster bracket (110) is provided with a strip hole (111) extending obliquely relative to a horizontal direction, and the caster shaft (120) moves in the strip hole (111) along an extension direction of the strip hole (111); A driving assembly, comprising a driving mechanism (210) and a traction member (220) connected to the driving mechanism (210), wherein the driving mechanism (210) drives the traction member (220) to generate traction force; The transmission assembly comprises a rotatable transmission rod (330), wherein the transmission rod (330) is connected to the traction member (220) and rotates under the action of traction force, so that one end of the transmission rod (330) abuts against the caster shaft (120), thereby pushing the caster shaft (120) to move along the extension direction of the strip hole (111).

2. The liftable movable device according to claim 1, characterized in that: The transmission assembly also includes: A fixing plate (310); A rotating shaft (320) is disposed on the fixing plate (310) and is rotatably connected to the transmission rod (330); A rotating wheel shaft (350) is arranged at one end of the transmission rod (330) close to the caster shaft (120); A rotating wheel (360) rotatably mounted on the rotating wheel shaft (350); The transmission rod (330) rotates under the action of the traction force, causing the rotating wheel (360) to abut against the caster shaft (120).

3. The liftable movable device according to claim 2, characterized in that: The transmission assembly further comprises a first elastic member (380), one end of which is connected to the fixing plate (310), and the other end of which is connected to one end of the transmission rod (330) and the traction member (220).

4. The liftable movable device according to claim 3, characterized in that: The caster assembly further comprises a second elastic member (160), one end of which is connected to the fixing plate (310) and the other end of which is connected to the caster shaft (120); Preferably, the first elastic member (380) and the second elastic member (160) are elastic tension springs.

5. The liftable movable device according to claim 4, characterized in that: The liftable movable device has a first state and a second state; In the first state, the driving mechanism (210) drives the traction member (220) to generate traction force, and the transmission rod (330) rotates under the action of the traction force, so that the rotating wheel (360) abuts against the caster shaft (120), pushing the caster shaft (120) to move along the extension direction of the strip hole (111), the first elastic member (380) is in the second stretching state, and the second elastic member (160) is in the fourth stretching state; In the second state, the transmission rod (330) loses the effect of traction and rotates in the opposite direction to reset under the pulling force of the first elastic member (380), so that there is a gap between the rotating wheel (360) and the caster shaft (120), and the caster shaft (120) moves in the opposite direction along the extension direction of the strip hole (111) under the pulling force of the second elastic member (160), the first elastic member (380) is in the first stretched state, and the second elastic member (160) is in the third stretched state; The tension of the first elastic member (380) when it is in the second stretched state is greater than the tension of the first stretched state, and the tension of the second elastic member (160) when it is in the fourth stretched state is greater than the tension of the third stretched state.

6. The liftable movable device according to claim 2, characterized in that: A moving track (370) is provided on the fixed plate (310), and one end of the transmission rod (330) connected to the traction member (220) moves along the extension direction of the moving track (370).

7. The liftable movable device according to claim 6, characterized in that: The transmission assembly comprises a sliding block (340), wherein the sliding block (340) is movably arranged in the movable track (370) and is respectively connected to the transmission rod (330) and the traction member (220); Preferably, the movable track (370) is arc-shaped.

8. The liftable movable device according to claim 1, characterized in that: The driving assembly further comprises a rotatable fixed pulley (230), on which the traction member (220) is supported, and is used to adjust the traction direction of the traction member (220).

9. The liftable movable device according to claim 2, characterized in that: Both ends of the strip-shaped hole (111) are extended in the horizontal direction to form support portions (1111) for supporting the caster shaft (120); The horizontal distance between the support portions (1111) is less than or equal to the distance between the rotating shaft (320) and the end of the rotating wheel (360).

10. A household appliance, characterized in that: A liftable movable device as claimed in any one of claims 1 to 9 is provided, wherein the household appliance comprises a base, and the caster bracket (110), the drive assembly and the transmission assembly are all fixed on the bottom surface of the base.

Images