Liftable moving device and household appliance

Abstract

The invention discloses a liftable moving device and a household appliance, the device comprises a trundle assembly, a driving assembly, a transmission assembly and a control assembly, the trundle assembly comprises a trundle support, a trundle shaft capable of moving relative to the trundle support and a trundle mounted on the trundle shaft; the driving assembly provides acting force for movement of the trundle shaft, the transmission assembly comprises a rotatable transmission rod, the transmission rod rotates under the acting force, one end of the transmission rod is made to abut against or be separated from the trundle shaft, the trundle shaft is made to move, and automatic lifting of the trundle is achieved. The control assembly comprises a control mechanism and a driving gear, the control mechanism controls the driving gear to rotate, and the driving gear is correspondingly assembled with a driven gear installed on the trundle shaft and drives the trundle shaft to rotate, so that the household appliance is convenient to move, carry and the like, and time and labor are saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of liftable and movable devices, and in particular, relates to a liftable and automatically movable device and a household appliance having the device. 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 the prior art, even if the household electrical appliances can be lifted and lowered, they usually need to be moved manually and cannot be moved automatically, resulting in a low user experience.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] 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, wherein 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. At the same time, the control component is used to drive the caster to rotate automatically, and there is no need to manually provide the force to drive the caster to lift or move, which saves time and effort and can effectively improve the user experience.

[0008] 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:

[0009] A caster assembly, comprising a caster bracket, a support frame movable relative to the caster bracket, the support frame comprising a rotatable caster shaft and casters mounted at both ends of the caster shaft, the caster bracket being provided with a strip hole extending obliquely relative to a horizontal direction, the caster shaft moving in the strip hole along an extending direction of the strip hole;

[0010] 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;

[0011] A transmission assembly, comprising a rotatable transmission rod, the transmission rod being connected to the traction member and rotating 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;

[0012] The control assembly is arranged on the support frame, and comprises a control mechanism and a driving gear connected to the control mechanism. The control mechanism controls the driving gear to rotate, and the driving gear is assembled correspondingly with the driven gear installed on the caster shaft to drive the caster shaft to rotate.

[0013] Furthermore, the control mechanism includes:

[0014] A driving component, used to provide a force to drive the driving gear to rotate;

[0015] The speed regulating component is connected to the driving component and the driving gear respectively, and is used for adjusting the speed of the driving gear.

[0016] In the above scheme, the rotation speed of the driving gear is adjusted by the speed regulating component, thereby adjusting the rotation speed of the caster shaft and driving the caster to rotate, thereby achieving adjustable moving speed.

[0017] Furthermore, the transmission assembly also includes:

[0018] Fixed plate;

[0019] A rotating shaft, disposed on the fixed plate and rotatably connected to the transmission rod;

[0020] A rotating wheel shaft is arranged at one end of the transmission rod close to the caster shaft;

[0021] A rotating wheel rotatably mounted on the rotating wheel shaft;

[0022] The transmission rod rotates under the action of traction force, so that the rotating wheel abuts against the caster shaft.

[0023] 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.

[0024] 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.

[0025] Furthermore, it also includes:

[0026] 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;

[0027] The second elastic member has one end connected to the fixing plate and the other end connected to the caster shaft.

[0028] Preferably, the first elastic member and the second elastic member are elastic tension springs.

[0029] Furthermore, the liftable movable device has a first state, a second state and a third state;

[0030] 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, pushing the caster shaft to move along the extension direction of the strip hole, the first elastic member is in the second stretching state, the second elastic member is in the fourth stretching state, and the caster supports the ground;

[0031] In the second state, the control component starts to work and drives the caster shaft to rotate;

[0032] In the third 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 the rotating wheel is separated from 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 stretching state, the second elastic member is in the third stretching state, and the caster is suspended;

[0033] 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.

[0034] Furthermore, the support frame further comprises a support rod, and the support rod is rotatably connected to the caster shaft;

[0035] At least two support rods are provided, at least two caster shafts are provided, and the support rods and the caster shafts are alternately connected end to end to form a rectangular support frame.

[0036] Furthermore, the support frame further includes at least two reinforcing plates, which are distributed on the inner side of the support frame;

[0037] The reinforcing plate is fixedly connected to the caster shaft, and a positioning groove is provided on the side surface of the reinforcing plate facing the inner side of the supporting frame;

[0038] The transmission rod rotates under the action of the traction force, so that one end of the transmission rod slides into the positioning groove of the reinforcement plate.

[0039] In the above scheme, the firmness of the entire support frame is enhanced by setting a reinforcement plate; by setting a positioning groove on the reinforcement plate, when the transmission rod rotates under the action of traction, one end of the transmission rod slides into the positioning groove, and the positioning groove is used to limit one end of the transmission rod, thereby improving the stability of the caster when supporting the ground.

[0040] Furthermore, the control assembly is installed on the support rod and / or the reinforcement plate.

[0041] In the above scheme, by installing the control component on the support rod and / or the reinforcement plate, the control component moves with the support frame, and the driving gear and the driven gear always maintain a corresponding assembly state of meshing, ensuring that the control component can drive the caster shaft to drive the caster to rotate.

[0042] Furthermore, two ends of the strip-shaped hole are extended in the horizontal direction to form support parts for supporting the caster shaft;

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0048] 1. The present invention provides a liftable movable device, which drives a traction member to generate traction force through a driving mechanism, so that a 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, thereby making the caster support 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, thereby making the caster suspended in the air, realizing automatic control of the caster lifting and lowering; at the same time, when the caster supports the ground, the control component is used to drive the caster to rotate automatically, thereby realizing automatic movement of the household appliance, without manually providing the force to drive the caster to lift and move, thus saving time and effort, and effectively improving the user experience.

[0049] 2. In the present invention, the speed of the driving gear is adjusted by the speed regulating component, thereby adjusting the speed of the caster shaft and driving the caster to rotate, thereby achieving adjustable moving speed.

[0050] 3. In the present invention, the control component is installed on the support rod and / or the reinforcement plate, so that the control component moves with the support frame, and the driving gear and the driven gear always maintain a corresponding assembly state of meshing, ensuring that the control component can drive the caster shaft to drive the caster to rotate.

[0051] 4. 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.

[0052] 5. 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.

[0053] 6. 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 carry, and has the characteristics of simple structure, easy use and low cost.

[0054] 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

[0055] 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:

[0056] Figure 1 is a schematic structural diagram of the liftable movable device in the present invention when it is in the third state;

[0057] Figure 2 is a schematic structural diagram of the liftable movable device in the present invention when it is in a first state;

[0058] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0059] Figure 4 It is a schematic diagram of the structure of the caster bracket in the present invention;

[0060] Figure 5 Schematic diagram of the inclination angle of the strip-shaped holes in the present invention;

[0061] Figure 6 is a schematic diagram of the bottom structure of the washing machine when the liftable movable device of the present invention is in the third state;

[0062] Figure 7 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.

[0063] 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; 430, fixed foot; 510, driving component; 520, speed regulating component; 530, driven gear.

[0064] 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

[0065] 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.

[0066] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inside", "outside", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0067] 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.

[0068] 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 transport them. Even if casters are installed at the bottom, users still need to expend 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, and it also takes a lot of effort to move it manually. 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. At the same time, when the caster supports the ground, the control component is used to drive the caster to rotate automatically, so as to realize automatic movement of the household appliance. Compared with traditional manual operation, it saves time and effort. The specific improvements are as follows:

[0069] like Figures 1 to 7As shown, the present invention provides a liftable mobile device, including a caster assembly, a driving assembly, a transmission assembly and a control assembly, wherein the caster assembly includes a caster bracket 110, a second elastic member 160 and a support frame, wherein the support frame includes a reinforcing plate 130, a support rod 140, a caster shaft 120, and a caster 150, wherein the reinforcing plate 130 is provided with a positioning groove 131, and 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 driving assembly includes a driving 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 moving track 370; the control assembly includes a driving component 510, a speed regulating component 520, a driving gear (not shown in the figure) and a driven gear 530.

[0070] 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, a transmission assembly and a control assembly.

[0071] The caster assembly includes a support frame, and the support frame includes a support rod 140, a caster shaft 120, and a caster 150.

[0072] 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.

[0073] It should be noted that if the caster shaft 120 located in the front is rotatably connected to the support rod 140, the caster shaft 120 located in the rear and the support rod 140 can be rotatably connected or fixedly connected: when the caster shaft 120 at the rear and the support rod 140 are rotatably connected, the caster 150 is fixedly connected to the caster shaft 120 at the rear; when the caster shaft 120 at the rear and the support rod 140 are fixedly connected, the caster 150 is rotatable relative to the caster shaft 120 at the rear.

[0074] The casters 150 include four casters 150, which are respectively mounted on the two ends of the two caster shafts 120 and distributed at the four corners of the rectangular support frame to form the support frame. The casters 150 can be universal wheels.

[0075] The caster assembly further includes a caster bracket 110 , and the support frame is movable relative to the caster bracket 110 .

[0076] The caster brackets 110 include four, and one caster bracket 110 is correspondingly provided at the position of each caster 150 .

[0077] 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.

[0078] 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.

[0079] 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°.

[0080] 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.

[0081] 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.

[0082] Preferably, the supporting surface of the supporting portion 1111 is arc-shaped and matches the axial surface of the caster shaft 120 , thereby reducing the friction force when the caster shaft 120 rotates.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] When the caster shaft 120 drives the caster 150 to move, the entire support frame moves together.

[0091] 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 .

[0092] The transmission rod 330 rotates under the action of the traction force, so that the rotating wheel 360 abuts against the caster shaft 120 .

[0093] 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.

[0094] 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 .

[0095] 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.

[0096] Furthermore, one end of the transmission rod 330 connected to the traction member 220 moves along the extension direction of the moving track 370 .

[0097] 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.

[0098] Preferably, the movable track 370 is arc-shaped.

[0099] 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 .

[0100] 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 .

[0101] 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 .

[0102] 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.

[0103] The control assembly is disposed on the support frame, and may be mounted on the support rod 140 or on the reinforcing plate 130, etc., so that the control assembly is fixed relative to the support frame.

[0104] The control assembly includes a control mechanism and a driving gear connected to the control mechanism. The control mechanism controls the driving gear to rotate. The driving gear is assembled corresponding to the driven gear 530 installed on the caster shaft 120 to drive the caster shaft 120 to rotate and drive the caster 150 to rotate.

[0105] The control mechanism includes a driving component 510 and a speed regulating component 520 .

[0106] The driving component 510 is used to provide a force to drive the driving gear to rotate.

[0107] The speed regulating component 520 is connected to the driving component 510 and the driving gear respectively, and is used to adjust the speed of the driving gear.

[0108] The speed of the driving gear is adjusted by the speed regulating component 520, thereby adjusting the speed of the caster shaft 120 and driving the caster 150 to rotate, thereby achieving adjustable moving speed.

[0109] Preferably, the speed regulating component 520 is a gear box.

[0110] Specifically, when it is necessary to move to a certain position, the driving component 510 drives the driving gear to rotate, the driving gear drives the driven gear 530 to rotate, the driven gear 530 drives the caster shaft 120 to rotate, and the caster shaft 120 drives the caster 150 to rotate, thereby realizing automatic movement; when it is necessary to return to the original position, the driving component 510 drives the driving gear to rotate in the opposite direction, the driving gear drives the driven gear 530 to rotate in the opposite direction, the driven gear 530 drives the caster shaft 120 to rotate in the opposite direction, and the caster shaft 120 drives the caster 150 to rotate in the opposite direction to return to the original position.

[0111] The liftable movable device has a first state, a second state and a third state:

[0112] 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;

[0113] In the second state, the control assembly starts to work, driving the caster shaft 120 to rotate and driving the caster 150 to rotate;

[0114] In the third 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 the rotating wheel 360 is separated from the caster shaft 120. The caster shaft 120 moves upward 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, the second elastic member 160 is in the third stretched state, and the caster 150 is suspended. Figure 1 shown.

[0115] 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.

[0116] 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.

[0117] Preferably, the first elastic member 380 and the second elastic member 160 are elastic tension springs.

[0118] 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.

[0119] 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 .

[0120] 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.

[0121] Furthermore, the support frame also includes a reinforcing plate 130 , and the reinforcing plates 130 include two, which are respectively fixedly connected to the two caster shafts 120 , and the reinforcing plate 130 is at least partially located between the two caster shafts 120 .

[0122] like Figure 3 As shown, a positioning groove 131 is provided on the reinforcing plate 130 located between the two caster shafts 120 .

[0123] 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 support frame 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.

[0124] 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.

[0125] Furthermore, it also includes:

[0126] A detection module, used to obtain information that the caster 150 supports the ground, the caster 150 moves to a specified position, and the caster 150 is suspended to a specified height;

[0127] The control module is used to control the drive mechanism 210 to stop working and the control component to start working after receiving information that the caster 150 supports the ground, control the control component to stop working and / or control the drive mechanism 210 to start working after receiving information that the caster 150 moves to a specified position, and control the drive mechanism 210 to stop working after receiving information that the caster 150 is suspended to a specified height.

[0128] As an embodiment, the present invention provides a household appliance having a liftable movable device as described above.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] Taking the household appliance as a washing machine 400 as an example, specifically:

[0133] The washing machine 400 includes a housing 410 , and a lifting and moving device is provided at the bottom of the housing 410 .

[0134] When the washing machine 400 is in operation, the transmission rod 330 is located at the initial position, the rotating wheel 360 is separated from 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 As shown;

[0135] 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, and the caster 150 supports the ground. At this time, the driving mechanism 210 stops working, as shown in FIG. Figure 7 As shown;

[0136] At the same time, the driving component 510 starts to work, driving the driving gear to rotate, the driving gear drives the driven gear 530 to rotate, the driven gear 530 drives the caster shaft 120 to rotate, and the caster shaft 120 drives the caster 150 to rotate, realizing automatic movement.

[0137] When it moves to the designated position or the moving time reaches the preset time, the driving component 510 is turned off, and the driving mechanism 210 starts to work, so that the traction member 220 loses traction, the transmission rod 330 loses the effect of traction, 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 shown.

[0138] When the washing machine 400 needs to return to its original position, the driving assembly and the transmission assembly are used to make the caster 150 support the ground again, the control assembly is used to move the household appliance in the opposite direction to the original position, and then the driving assembly and the transmission assembly are used to make the caster 150 suspended in the air again.

[0139] 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 module.

[0140] 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 support frame movable relative to the caster bracket (110), the support frame comprising a rotatable caster shaft (120) and casters (150) mounted at both ends of the caster shaft (120), the caster bracket (110) being provided with a strip hole (111) extending obliquely relative to a horizontal direction, and the caster shaft (120) moving 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; A transmission assembly, comprising 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); A control assembly is arranged on the support frame, comprising a control mechanism and a driving gear connected to the control mechanism, wherein the control mechanism controls the driving gear to rotate, and the driving gear is assembled correspondingly to a driven gear (530) installed on the caster shaft (120) to drive the caster shaft (120) to rotate.

2. The liftable movable device according to claim 1, characterized in that: The control mechanism comprises: A driving component (510), used for providing a force to drive the driving gear to rotate; The speed regulating component (520) is connected to the driving component (510) and the driving gear respectively, and is used to adjust the speed of the driving gear.

3. 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).

4. The liftable movable device according to claim 3, characterized in that: Also includes: 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); 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, a second state and a third 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, the second elastic member (160) is in the fourth stretching state, and the caster (150) supports the ground; In the second state, the control component starts to work, driving the caster shaft (120) to rotate; In the third 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 the rotating wheel (360) is separated from 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, the second elastic member (160) is in the third stretched state, and the caster (150) is suspended in the air; 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 1, characterized in that: The support frame further comprises a support rod (140), wherein the support rod (140) is rotatably connected to the caster shaft (120); At least two support rods (140) are provided, and at least two caster shafts (120) are provided. The support rods (140) and the caster shafts (120) are alternately connected end to end to form a rectangular support frame.

7. The liftable movable device according to claim 6, characterized in that: The support frame further comprises reinforcing plates (130), at least two of which are arranged and distributed on the inner side of the support frame; The reinforcing plate (130) is fixedly connected to the caster shaft (120), and a positioning groove (131) is provided on the side surface of the reinforcing plate (130) facing the inner side of the supporting frame; The transmission rod (330) rotates under the action of the traction force, so that one end of the transmission rod (330) slides into the positioning groove (131) of the reinforcing plate (130).

8. The liftable movable device according to claim 7, characterized in that: The control assembly is mounted on the support rod (140) and / or the reinforcing plate (130).

9. The liftable movable device according to claim 3, 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.

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