Liftable moving device and household appliance

Abstract

The invention discloses a liftable moving device and a household appliance, and the device comprises a support, rollers which are rotatably arranged on the support, fixed legs which are arranged on the support in a liftable manner, and a driving module which is arranged on the support and is used for driving the fixed legs to lift, one side, facing the roller, of the fixing foot is provided with an axially extending avoiding part, the roller is at least partially embedded into the avoiding part, and when the fixing foot ascends and descends, the roller plays a limiting role in the circumferential direction of the fixing foot. The avoiding parts are arranged on the fixing feet, the rollers and the avoiding parts are correspondingly assembled, the circumferential direction of the fixing feet is limited when the fixing feet ascend and descend, it is guaranteed that the driving module can drive the fixing feet to ascend and descend, the problem that the fixing feet slip and rotate and cannot ascend and descend is solved, and the use experience of a user can be effectively improved.

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 types of furniture and electrical appliances are gradually entering people's lives. In order to meet people's needs for the use of equipment, rollers and fixed feet are set at the bottom of the equipment to enable it to be raised and lowered to meet the needs of moving or fixing the equipment.

[0003] However, when the existing lifting device drives the fixed foot to rise and fall, the friction between the fixed foot and the ground is usually used as resistance to limit the rotation of the fixed foot, so as to drive the fixed foot to rise and fall through the lifting device. However, in places where household appliances, especially washing machines, are placed, there will inevitably be water stains on the ground. At this time, the friction between the fixed foot and the ground will be greatly reduced. When the lifting device provides driving force to the fixed foot, the fixed foot is easily slipped and rotated by the force, resulting in the problem that the fixed foot cannot be raised or lowered, which brings inconvenience to the use of the equipment.

[0004] Furthermore, the existing lifting device cannot accurately control the height of the equipment, so that the height of the equipment rising or falling is inconsistent each time, which affects the normal use of the equipment and reduces the user experience.

[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 movable device. An avoidance portion is arranged on the fixed foot, and a roller is assembled corresponding to the avoidance portion. When the fixed foot is lifted or lowered, the roller limits the fixed foot in the circumferential direction of the fixed foot, thereby ensuring that the driving module can drive the fixed foot to lift and lower, and preventing the fixed foot from slipping and rotating, causing the fixed foot to be unable to be lifted or lowered, thereby effectively improving 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] Bracket;

[0009] A roller, rotatably disposed on the bracket;

[0010] A fixed foot, which is liftably mounted on the bracket;

[0011] A driving module, disposed on the bracket, for driving the fixed foot to rise and fall;

[0012] An axially extending avoidance portion is provided on a side of the fixed foot facing the roller, and the roller is at least partially embedded in the avoidance portion.

[0013] Furthermore, the avoidance portion is a slideway structure formed by an inward concave outer surface of the fixed foot on a side facing the roller;

[0014] The axial direction of the roller is perpendicular to the extending direction of the avoidance portion, and the axial length of the roller is smaller than the opening width of the avoidance portion.

[0015] Furthermore, the driving module includes a driving component and a switch component, wherein the driving component is used to provide a driving force for the lifting and lowering of the fixed foot, and the fixed foot abuts against or separates from the switch component when lifting and lowering, thereby changing the connection state of the switch component;

[0016] The switch assembly controls the closing of the driving assembly and is used to control the maximum height of the fixed foot.

[0017] Further, the switch assembly includes a first terminal, a second terminal and an operating rod, wherein the first terminal and the second terminal are spaced apart in the vertical direction;

[0018] The operating rod has a fixed end and a movable end, the fixed end is arranged between the first binding post and the second binding post, and the movable end is rotatable around the fixed end;

[0019] The switch assembly has three connection states:

[0020] When the operating rod abuts against the first terminal, the switch assembly is in a first connection state, and the drive assembly is closed;

[0021] When the operating rod is located between the first terminal and the second terminal, the switch assembly is in the second connection state, and the drive assembly remains turned on;

[0022] When the operating rod abuts against the second terminal, the switch assembly is in the third connection state, and the drive assembly is closed.

[0023] Further, the first terminal is located below the second terminal;

[0024] The device has four states:

[0025] First state: the switch assembly is in the first connection state, the drive assembly is turned off, and the bottom surface of the fixed foot is lower than the horizontal plane where the roller is located;

[0026] Second state: the driving assembly is turned on and drives the fixed foot to rise, the fixed foot abuts against the moving end of the operating rod and drives the operating rod to rotate, and the switch assembly is in the second connection state;

[0027] The third state: when the switch assembly is in the third connection state, the drive assembly is closed, the bottom surface of the fixed foot is higher than the horizontal plane where the roller is located, and the fixed foot rises to the maximum height;

[0028] Fourth state: the driving component is turned on and drives the fixed foot to descend, and the switch component is in the second connection state;

[0029] As the fixed foot descends, the device returns to the first state, and the fixed foot descends to the lowest height.

[0030] Furthermore, it also includes a control module, which is used to control the drive component to start after receiving an instruction to start the drive component.

[0031] Furthermore, it also includes a first mounting portion and a second mounting portion protruding from the bracket, the first mounting portion and the second mounting portion are spaced apart, and both the first mounting portion and the second mounting portion are provided with mounting holes;

[0032] It also includes a rotating shaft, both ends of which are rotatably mounted in the mounting hole;

[0033] The roller is sleeved on the rotating shaft;

[0034] When the fixed foot rises to a maximum height, the roller is separated from the avoidance portion.

[0035] Furthermore, the driving assembly includes:

[0036] A driving member, disposed on the bracket, for generating a driving force;

[0037] a transmission member, rotatably disposed on the bracket, connected to the driving member and the fixed foot respectively, and used for transmitting the driving force to the fixed foot;

[0038] The transmission member comprises:

[0039] A driving gear connected to the driving member and rotated by the driving force;

[0040] A driven gear meshes with the driving gear and rotates with the driving gear;

[0041] A transmission shaft is fixed at the center of the driven gear and rotates with the driven gear;

[0042] The bracket is provided with a fixing hole, the transmission shaft passes through the fixing hole, and a ball is provided between the transmission shaft and the fixing hole to achieve a rotatable connection between the transmission shaft and the bracket.

[0043] Furthermore, an external thread is provided on the outer circumferential surface of the lower end of the transmission shaft, a downwardly recessed limiting groove is provided above the fixed foot, an internal thread is provided on the inner circumferential wall of the limiting groove, and the lower end of the transmission shaft is inserted into the limiting groove so that the external thread and the internal thread are assembled correspondingly.

[0044] A household appliance has a liftable movable device as described above. The household appliance comprises a base, and the bracket is fixed on the bottom surface of the base.

[0045] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0046] 1. The present invention provides a liftable movable device, which provides an avoidance portion on the fixed foot, and uses a roller to be assembled corresponding to the avoidance portion. When the fixed foot is lifted or lowered, the roller is used to limit the circumference of the fixed foot. Compared with the traditional method of limiting the fixed foot by the friction between the fixed foot and the ground, the problem of being unable to lift or lower due to slipping and rotation between the fixed foot and the ground can be effectively prevented, and the driving module can be guaranteed to drive the fixed foot to achieve lifting or lowering. Moreover, this effect can be achieved by using its own structure without adding other components, thereby reducing costs.

[0047] 2. In the present invention, the driving component is turned on by the control module, and the driving component is used to drive the fixed foot to rise and fall. During the lifting process of the fixed foot, the switch component is cooperated to control the closing of the driving component, and further control the maximum height of the fixed foot. The lifting height can be accurately controlled, and the whole process is automatically controlled without manual operation, which improves the intelligence of the device.

[0048] 3. The present invention realizes the fixed foot touching the ground or the roller touching the ground by lifting the fixed foot, and utilizes the rotatable roller to realize the lifting and moving of the device. When it is applied to household appliances, it is convenient for lifting, moving and carrying the household appliances, and has the characteristics of simple structure and easy use.

[0049] 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

[0050] 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:

[0051] Figure 1 It is a structural exploded diagram of the lifting and moving device in the present invention;

[0052] Figure 2 It is a structural front view of the lifting and moving device of the present invention;

[0053] Figure 3 is a side structural cross-sectional view of the liftable movable device of the present invention when it is in a first state;

[0054] Figure 4 is a side structural cross-sectional view of the liftable movable device of the present invention when it is in the third state;

[0055] Figure 5 is a schematic diagram of a switch assembly in the present invention when it is in a first connection state;

[0056] Figure 6 is a schematic diagram of the switch assembly in the present invention when it is in a second connection state;

[0057] Figure 7 is a schematic diagram of the switch assembly in the present invention when it is in a third connection state;

[0058] Figure 8 This is a schematic diagram of the bottom structure of the household appliance in the present invention.

[0059] In the figure: 100, bracket; 110, fixing hole; 120, first mounting part; 130, second mounting part; 140, mounting hole; 150, third mounting part; 160, fourth mounting part; 170, first assembly hole; 180, positioning part; 200, roller; 210, rotating shaft; 300, fixing foot; 310, avoidance part; 320, slide groove; 330, limit groove; 410, driving member; 411, outer contour bracket; 412, second assembly hole; 421, driving gear; 422, driven gear; 423, transmission shaft; 424, ball; 500, switch assembly; 510, first terminal; 520, second terminal; 530, operating lever; 600, fixing member; 700, base; 800, electronic level.

[0060] 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

[0061] 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.

[0062] 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.

[0063] 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.

[0064] Because the existing lifting device usually uses the friction between the fixed foot and the ground as resistance when driving the fixed foot to lift, so as to limit the rotation of the fixed foot, thereby driving the fixed foot to lift through the lifting device. However, in places where household appliances, especially washing machines, are placed, there will inevitably be water stains on the ground. At this time, the friction between the fixed foot and the ground will be greatly reduced. When the lifting device provides driving force to the fixed foot, the fixed foot is easily slipped and rotated by the force, causing the problem that the fixed foot cannot be lifted, which brings inconvenience to the use of the equipment. In order to solve this problem, the present application provides a lifting and moving device and household appliances. By setting an avoidance part on the fixed foot, using a roller to correspond to the avoidance part, the circumference of the fixed foot is limited when the fixed foot is lifted, ensuring that the driving module can drive the fixed foot to lift, and preventing the fixed foot from slipping and rotating, causing the problem of being unable to lift. The specific improvements are as follows:

[0065] As an embodiment, the present invention provides a lifting and moving device, such as Figures 1 to 4 As shown, the device includes a bracket 100 , which is vertically arranged and is a barrel-shaped structure with upper and lower openings. A fixing hole 110 is arranged on the top of the bracket 100 .

[0066] The bracket 100 is divided into two parts connected to each other, and the diameter of the barrel-shaped structure of the upper part is smaller than the diameter of the barrel-shaped structure of the lower part.

[0067] A first opening is provided on one side surface of the barrel-shaped structure of the lower part, and the first opening has an extended length in the vertical direction. A first mounting portion 120 and a second mounting portion 130 are respectively provided on both sides of the first opening. The first mounting portion 120 and the second mounting portion 130 protrude from the bracket 100 and are arranged in parallel, and mounting holes 140 are provided on the first mounting portion 120 and the second mounting portion 130.

[0068] A second opening is provided on the other side surface of the barrel-shaped structure of the lower part opposite to the side surface, and the second opening has an extended length in the vertical direction. A third mounting portion 150 and a fourth mounting portion 160 are respectively provided on both sides of the second opening. The third mounting portion 150 and the fourth mounting portion 160 protrude from the bracket 100 and are arranged in parallel, and a first assembly hole 170 is provided on both the third mounting portion 150 and the fourth mounting portion 160.

[0069] A plurality of positioning portions 180 recessed into the bracket 100 are disposed between the first opening and the second opening. The positioning portions 180 have an extended length in the vertical direction.

[0070] In this embodiment, the bracket 100 may also be other structures as long as it can meet the corresponding assembly requirements between the components and play a corresponding role, and there is no specific limitation on this.

[0071] It also includes a rotating shaft 210 , both ends of which are rotatably mounted in the mounting hole 140 . Preferably, a bearing seat can be provided between the rotating shaft 210 and the mounting hole 140 to enable the rotating shaft 210 to rotate in the mounting hole 140 .

[0072] The bracket 100 further includes a roller 200 , which is sleeved on the rotating shaft 210 , so that the roller 200 can rotate relative to the bracket 100 .

[0073] It also includes a fixing foot 300, which can be raised and lowered on the bracket 100, the outer contour diameter of the fixing foot 300 is smaller than the outer contour diameter of the barrel-shaped structure of the lower part, and the fixing foot 300 is at least partially embedded in the barrel-shaped structure of the lower part of the bracket 100.

[0074] The fixing foot 300 is provided with an avoidance portion 310 on one side facing the roller 200 , and the roller 200 is assembled corresponding to the avoidance portion 310 , so as to limit the circumference of the fixing foot 300 when the fixing foot 300 is raised or lowered.

[0075] The avoidance portion 310 is a slideway structure formed by an inward concave outer surface of the fixed foot 300 facing the roller 200 , and the avoidance portion 310 has an extended length in the vertical direction.

[0076] The axial direction of the roller 200 is perpendicular to the extending direction of the avoidance portion 310 , the axial length of the roller 200 is smaller than the opening width of the avoidance portion 310 , and the roller 200 is at least partially embedded in the avoidance portion 310 .

[0077] When the fixed foot 300 is raised or lowered, the roller 200 rotates relative to the fixed foot 300 , and the fixed foot 300 is fixed relative to the roller 200 in the circumferential direction.

[0078] Furthermore, a slide groove 320 recessed inward is provided on the outer surface of the fixed foot 300, and the slide groove 320 is assembled corresponding to the positioning portion 180 to limit the lifting direction of the fixed foot 300, and at the same time, it can also prevent the fixed foot 300 from rotating under force.

[0079] It also includes a driving module, which is disposed on the bracket 100 and connected to the fixing foot 300 to drive the fixing foot 300 to move up and down.

[0080] The driving module includes a driving component, and the driving component is used to provide driving force for the lifting and lowering of the fixed foot 300.

[0081] The driving assembly includes a driving member 410 and a transmission member.

[0082] The driving member 410 is disposed on the bracket 100 and is used to generate a driving force.

[0083] The driving member 410 includes an inverted U-shaped outer profile bracket 411 . The brackets 100 on both sides of the outer profile bracket 411 are provided with second assembly holes 412 . The first assembly holes 170 are assembled correspondingly with the second assembly holes 412 to fix the driving member 410 on the bracket 100 .

[0084] Preferably, the first assembly hole 170 and the second assembly hole 412 are assembled by screws; the switch assembly 500 is fixed on the outer contour bracket 411 of the driving member 410 and is fixed on the bracket 100 together with the driving member 410 .

[0085] Preferably, the driving member 410 includes a motor having a rotatable motor shaft, and the motor shaft can rotate clockwise or counterclockwise.

[0086] The transmission member is rotatably disposed on the bracket 100 , and is respectively connected to the driving member 410 and the fixed foot 300 , so as to transmit the driving force to the fixed foot 300 .

[0087] The transmission member includes a driving gear 421 , a driven gear 422 , and a transmission shaft 423 .

[0088] The driving gear 421 is connected to the rotating shaft of the motor and rotates under the driving force.

[0089] The driven gear 422 meshes with the driving gear 421 and rotates along with the driving gear 421 .

[0090] The transmission shaft 423 is fixed at the center of the driven gear 422 and rotates along with the driven gear 422 .

[0091] The transmission shaft 423 passes through the fixing hole 110 at the top of the bracket 100 , and a ball 424 is provided between the transmission shaft 423 and the fixing hole 110 to achieve a rotatable connection between the transmission shaft 423 and the bracket 100 .

[0092] Preferably, a connecting portion is provided above the transmission shaft 423, and the connecting portion is a circular plate-shaped structure with a hole in the center for the transmission shaft 423 to pass through. A first annular groove that is recessed downward is provided on the upper surface of the connecting portion, and correspondingly, a second annular groove that is recessed upward is provided around the fixing hole 110 at the top of the bracket 100. The first annular groove and the second annular groove correspond to form an annular channel, and the diameter of the annular channel is greater than the diameter of the ball 424, and the ball 424 is accommodated in the annular channel.

[0093] An external thread is provided on the outer circumferential surface of the lower end of the transmission shaft 423, a downwardly recessed limiting groove 330 is provided above the fixed foot 300, an internal thread is provided on the inner circumferential wall of the limiting groove 330, and the lower end of the transmission shaft 423 is inserted into the limiting groove 330 so that the external thread and the internal thread are assembled correspondingly.

[0094] The driving module further includes a switch assembly 500 , and the fixing foot 300 abuts against or separates from the switch assembly 500 when being raised or lowered, thereby changing the connection state of the switch assembly 500 .

[0095] The switch assembly 500 controls the closing of the driving assembly to control the maximum height of the lifting and lowering of the fixing foot 300.

[0096] The switch assembly 500 includes a first terminal 510 , a second terminal 520 and an operating rod 530 . The first terminal 510 and the second terminal 520 are spaced apart in a vertical direction, and the first terminal 510 is located below the second terminal 520 .

[0097] The operating rod 530 has a fixed end and a movable end. The fixed end is disposed between the first binding post 510 and the second binding post 520 , and the movable end is rotatable around the fixed end.

[0098] The switch assembly 500 has three connection states:

[0099] like Figure 5 As shown, when the operating rod 530 abuts against the first terminal 510, the switch assembly 500 is in the first connection state, and the driving assembly is closed;

[0100] like Figure 6As shown, when the operating rod 530 is located between the first terminal 510 and the second terminal 520, the switch assembly 500 is in the second connection state, and the driving assembly remains turned on;

[0101] like Figure 7 As shown, when the operating rod 530 abuts against the second terminal 520, the switch assembly 500 is in the third connection state, and the driving assembly is closed.

[0102] Correspondingly, the device has four states:

[0103] First state: the switch assembly 500 is in the first connection state, the drive assembly is turned off, and the bottom surface of the fixed foot 300 is lower than the horizontal plane where the roller 200 is located. Figure 3 As shown;

[0104] Second state: the driving assembly is turned on and drives the fixed foot 300 to rise, the fixed foot 300 abuts against the moving end of the operating rod 530 and drives the operating rod 530 to rotate, and the switch assembly 500 is in the second connection state;

[0105] The third state: when the switch assembly 500 is in the third connection state, the drive assembly is closed, the bottom surface of the fixed foot 300 is higher than the horizontal plane where the roller 200 is located, and the fixed foot 300 rises to the maximum height, such as Figure 4 As shown;

[0106] Fourth state: the driving component is turned on and drives the fixed foot 300 to descend, and the switch component 500 is in the second connection state;

[0107] As the fixed foot 300 descends, the device returns to the first state, and the fixed foot 300 descends to the lowest height, such as Figure 3 shown.

[0108] It also includes a control module, which is used to control the drive component to start after receiving an instruction to start the drive component.

[0109] It should be noted that the fixed foot 300 rotates slightly under the driving force, and after abutting against the roller 200, the roller 200 has a limiting effect on the fixed foot 300. During the lifting and lowering of the fixed foot 300, the roller 200 rotates as the fixed foot 300 is lifted and lowered under the abutting force. In this way, while ensuring the limiting effect of the roller 200 on the fixed foot 300, the lifting and lowering of the fixed foot 300 is not affected. Moreover, the friction between the two is reduced due to the rotation of the roller 200, and its normal service life will not be affected.

[0110] When the fixed foot 300 rises to the maximum height, the roller 200 is separated from the avoidance portion 310 , so that when the device needs to be moved, the roller 200 will not be restricted by the fixed foot 300 when rotating.

[0111] As an embodiment, the present invention provides a household appliance having a lifting and moving device as described above, such as Figure 8 As shown, the household appliance includes a base 700 , and the bracket 100 is fixed on the base 700 .

[0112] Preferably, the bracket 100 is fixed at four corners of the base 700 .

[0113] Preferably, it further comprises an annular fixing member 600 , which is arranged at the connection between the upper and lower parts of the bracket 100 , and a plurality of holes are arranged on the fixing member 600 for fixing the bracket 100 on the base 700 .

[0114] Specific:

[0115] The device is usually in the first state, the operating rod 530 is in contact with the first terminal 510, the driving assembly is closed, the fixed foot 300 is on the ground, and the roller 200 is suspended in the air;

[0116] When the device needs to be moved, an instruction to start the drive assembly is issued. After receiving the instruction to start the drive assembly, the control module controls the drive assembly to start, and the motor starts working. The motor shaft rotates, the driving gear 421 rotates, the driven gear 422 rotates, and the transmission rod rotates, driving the fixed foot 300 to move upward; the fixed foot 300 abuts against the moving end of the operating rod 530 during the rising process, and the operating rod 530 is separated from the first terminal 510, located between the first terminal 510 and the second terminal 520 and rotates in the direction of the second terminal 520; as the fixed foot 300 rises, the moving end of the operating rod 530 continues to rotate, and when the operating rod 530 abuts against the second terminal 520, the drive assembly is closed, the fixed foot 300 rises to the maximum height and is separated from the roller 200. At this time, the roller 200 touches the ground and the device can be moved;

[0117] When the device needs to be fixed, an instruction to start the drive assembly is issued. After receiving the instruction to start the drive assembly, the control module controls the drive assembly to start, and the motor starts working. The motor shaft rotates in the opposite direction, the driving gear 421 rotates in the opposite direction, the driven gear 422 rotates in the opposite direction, and the transmission rod rotates in the opposite direction, driving the fixed foot 300 to move downward; the fixed foot 300 always abuts against the moving end of the operating rod 530 during the descent process. After the operating rod 530 is separated from the second terminal 520, it is located between the first terminal 510 and the second terminal 520 and rotates in the direction of the first terminal 510; as the fixed foot 300 descends, the moving end of the operating rod 530 continues to rotate. When the operating rod 530 abuts against the first terminal 510, the drive assembly is closed, the fixed foot 300 is just separated from the moving end of the operating rod 530, and the fixed foot 300 descends to the lowest height. At this time, the roller 200 is suspended in the air and the fixed foot 300 touches the ground.

[0118] It should be noted that an electronic level 800 , such as an inclination sensor, may also be provided on the base 700 to detect whether the base 700 is level.

[0119] The inclination sensor is connected to a control module, which can receive detection information from the inclination sensor and control the operation of the driving member 410 in the device at the four corners of the equipment base 700 according to the detection information. When the fixed foot 300 supports the ground, the height of the bottom of the equipment on its side is adjusted to the ground, so that the base 700 of the equipment can be in a horizontal state and will not tilt with the inclination of the bottom surface of the installation place, thereby ensuring that the equipment can work normally.

[0120] 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: Bracket (100); A roller (200) rotatably disposed on the bracket (100); A fixed foot (300) is movably mounted on the bracket (100); A driving module, arranged on the support (100), and used for driving the fixed foot (300) to rise and fall; An axially extending avoidance portion (310) is provided on one side of the fixed foot (300) facing the roller (200), and the roller (200) is at least partially embedded in the avoidance portion (310).

2. The liftable movable device according to claim 1, characterized in that: The avoidance portion (31) is a slideway structure formed by an inward concave outer surface of the fixed foot (300) on a side facing the roller (200); The axial direction of the roller (200) is perpendicular to the extension direction of the avoidance portion (310), and the axial length of the roller (200) is smaller than the opening width of the avoidance portion (310).

3. The liftable movable device according to claim 1, characterized in that: The driving module comprises a driving component and a switch component (500), wherein the driving component is used to provide a driving force for the lifting and lowering of the fixed foot (300), and when the fixed foot (300) is lifted and lowered, it abuts against or detaches from the switch component (500), thereby changing the connection state of the switch component; The switch assembly (500) controls the closing of the driving assembly and is used to control the maximum height of the lifting and lowering of the fixed foot (300).

4. The liftable movable device according to claim 3, characterized in that: The switch assembly (500) comprises a first terminal (510), a second terminal (520) and an operating rod (530), wherein the first terminal (510) and the second terminal (520) are arranged at intervals in the vertical direction; The operating rod (530) has a fixed end and a movable end, the fixed end is arranged between the first terminal (510) and the second terminal (520), and the movable end is rotatable around the fixed end; The switch assembly (500) has three connection states: When the operating rod (530) abuts against the first terminal (510), the switch assembly (500) is in a first connection state, and the drive assembly is closed; When the operating rod (530) is located between the first terminal (510) and the second terminal (520), the switch assembly (500) is in a second connection state, and the drive assembly remains turned on; When the operating rod (530) abuts against the second terminal (520), the switch assembly (500) is in a third connection state, and the drive assembly is closed.

5. The liftable movable device according to claim 4, characterized in that: The first terminal (510) is located below the second terminal (520); The device has four states: First state: the switch assembly (500) is in a first connection state, the drive assembly is turned off, and the bottom surface of the fixed foot (300) is lower than the horizontal plane where the roller (200) is located; Second state: the driving assembly is turned on and drives the fixed foot (300) to rise, the fixed foot (300) abuts against the moving end of the operating rod (530) and drives the operating rod (530) to rotate, and the switch assembly (500) is in the second connection state; The third state: when the switch assembly (500) is in the third connection state, the drive assembly is turned off, the bottom surface of the fixed foot (300) is higher than the horizontal plane where the roller (200) is located, and the fixed foot (300) rises to a maximum height; Fourth state: the driving component is turned on and drives the fixed foot (300) to descend, and the switch component (500) is in the second connection state; As the fixed foot (300) descends, the device returns to the first state, and the fixed foot (300) descends to the lowest height.

6. The liftable movable device according to claim 5, characterized in that: It also includes a control module, which is used to control the drive component to start after receiving an instruction to start the drive component.

7. The liftable movable device according to claim 5, characterized in that: It also includes a first mounting portion (120) and a second mounting portion (130) protruding from the bracket (100), the first mounting portion (120) and the second mounting portion (130) being arranged at an interval, and both the first mounting portion (120) and the second mounting portion (130) being provided with mounting holes (140); It also includes a rotating shaft (210), with both ends of the rotating shaft (210) being rotatably mounted in the mounting hole (140); The roller (200) is sleeved on the rotating shaft (210); When the fixed foot (300) rises to a maximum height, the roller (200) is separated from the avoidance portion (310).

8. The liftable movable device according to claim 1, characterized in that: The drive assembly comprises: A driving member (410), disposed on the support (100) and used to generate a driving force; a transmission member, rotatably disposed on the bracket (100), respectively connected to the driving member (410) and the fixed foot (300), and used for transmitting a driving force to the fixed foot (300); The transmission member comprises: A driving gear (421) is connected to the driving member (410) and rotates under the action of a driving force; A driven gear (422) meshes with the driving gear (421) and rotates along with the driving gear (421); A transmission shaft (423) is fixedly disposed at the center of the driven gear (422) and rotates along with the driven gear (422); The bracket (100) is provided with a fixing hole (110), the transmission shaft (423) passes through the fixing hole (110), and a ball (424) is provided between the transmission shaft (423) and the fixing hole (110) for realizing a rotatable connection between the transmission shaft (423) and the bracket (100).

9. The liftable movable device according to claim 8, characterized in that: An external thread is provided on the outer peripheral surface of the lower end of the transmission shaft (423); a downwardly recessed limiting groove (330) is provided above the fixing foot (300); an internal thread is provided on the inner peripheral wall of the limiting groove (330); the lower end of the transmission shaft (423) is inserted into the limiting groove (330) so that the external thread and the internal thread are assembled correspondingly.

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 (700), and the bracket (100) is fixed on the base (700).

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