Movable base and electrical appliance

Abstract

The application provides a movable base and a refrigerator, the base comprising a base body, a roller mounting seat, a roller and a driving device. The roller mounting seat is pivotally mounted to the base body. The roller is rotatably mounted to the roller mounting seat. The driving device is used to drive the roller mounting seat to swing relative to the base body, so as to move the roller towards the direction of being close to or far away from the base body, thereby adjusting the distance between the base body and the bearing surface. The base of the application not only can support the movement of the electrical equipment through the roller, but also can adjust the distance between the base body and the bearing surface (ground) through the driving device, thereby preventing the electrical equipment from being skewed.

Description

Technical Field

[0001] This invention belongs to the field of electrical equipment technology, specifically providing a movable base and electrical equipment. Background Technology

[0002] Electrical appliances include refrigerators, freezers, freezers, washing machines, etc. With economic development, all kinds of electrical appliances have entered people's lives and become an indispensable part of their lives.

[0003] Because floors in homes are often uneven, electrical appliances placed on the floor can become tilted, affecting their performance. To overcome this problem, existing appliances, such as refrigerators, are equipped with feet on their bottoms to adjust their posture and prevent them from tilting.

[0004] However, the legs of existing electrical appliances cannot be moved, making it extremely inconvenient to move them, which hinders users from moving household appliances and affects their user experience. Summary of the Invention

[0005] One objective of this invention is to solve the problem of inconvenience in moving existing electrical equipment.

[0006] To achieve the above objectives, the present invention provides, in a first aspect, a movable base suitable for a refrigerator, the base comprising:

[0007] Base body;

[0008] A roller mounting base, which is pivotally mounted to the base body;

[0009] A roller, which is rotatably mounted on the roller mounting base;

[0010] A driving device is used to drive the roller mounting base to swing relative to the base body, so that the roller moves toward or away from the base body, thereby adjusting the distance between the base body and the bearing surface.

[0011] Optionally, the driving device includes a first driving member and a second driving member driven together, the first driving member being connected to the base body, and the second driving member being connected to the roller mounting seat. The first driving member and the second driving member are configured to move relative to each other to drive the roller mounting seat to swing relative to the base body.

[0012] Optionally, the first driving member is rotatably connected to the base body, and the first driving member includes an operating part; the second driving member is pivotally connected to the roller mounting seat; one of the first driving member and the second driving member has a threaded hole, and the other of the first driving member and the second driving member has a threaded post, the threaded post matching the threaded hole; when the operating part is operated, it drives the first driving member to rotate, thereby causing the threaded post to move in the direction of extending into or out of the threaded hole, so as to change the length of the first driving member and the second driving member, thereby driving the roller mounting seat to swing relative to the base body.

[0013] Optionally, the operating part is a column exposed on the front side of the base body, and the cross-section of the column is non-circular; or, the operating part is a recessed groove exposed on the front side of the base body, and the cross-section of the recessed groove is non-circular.

[0014] Optionally, the base further includes a locking cap that fits into the operating part, the locking cap being provided with a magnet and an anti-slip structure; the base body is provided with an anti-slip mating structure; the locking cap is detachably installed with the operating part, the locking cap being attracted to the base body by the magnet, thereby matching the anti-slip structure with the anti-slip mating structure to prevent the first driving member from loosening.

[0015] Optionally, the threaded hole is filled with grease; the first driving member and the second driving member are configured such that when the roller abuts against the bearing surface, the threaded hole is tilted downward, so that the grease in the threaded hole flows to the threaded post under its own gravity, thereby lubricating the thread between the threaded post and the threaded hole.

[0016] Optionally, the drive device includes a lead screw and a lead screw nut, the lead screw being circumferentially rotatable and axially fixed to the base body, the lead screw nut being pivotally connected to the roller mounting seat, and the lead screw having an operating structure exposed on the outside of the base body; when the operating structure is operated, the lead screw drives the lead screw nut to move, so that the roller mounting seat swings relative to the base body.

[0017] Optionally, the base includes at least three roller mounting seats, each roller mounting seat having at least one roller mounted on it; a portion of the at least three roller mounting seats is disposed on the front side of the base body, and another portion of the at least three roller mounting seats is disposed on the rear side of the base body.

[0018] Optionally, each of the roller mounting seats corresponds to one of the driving devices, and a portion of each driving device is located on the front side of the base body for operation by an operator; and / or, the base also includes at least one support leg, which is threadedly connected to the base body. When the support leg is screwed, it can move away from the base body and abut against the bearing surface to lift the base body, thereby disengaging the roller close to the support leg from the bearing surface.

[0019] The present invention provides an electrical device in a second aspect, the electrical device comprising the base described in any one of the first aspects, the electrical device being a refrigerator, freezer, freezer or clothing handling device.

[0020] Based on the foregoing description, those skilled in the art will understand that in the aforementioned technical solution of the present invention, by providing a pivotable roller mounting seat on the base body, mounting rollers on the roller mounting seat, and driving the roller mounting seat to swing relative to the base body via a driving device, the rollers move towards or away from the base body, thereby adjusting the distance between the base body and the supporting surface (ground). Therefore, the base of the present invention can not only support the movement of electrical equipment via rollers, but also adjust the distance between the base body and the supporting surface (ground) via a driving device, thereby preventing the electrical equipment from tilting.

[0021] Furthermore, by having one of the first and second driving members have a threaded hole and the other have a threaded post, the first and second driving members can be threaded together. By connecting the first driving member with the operating part to the base body and the second driving member to the roller mounting seat, when the operating part is operated, the first driving member can be rotated, causing the threaded post to move in or out of the threaded hole, thereby changing the length of the first and second driving members and driving the roller mounting seat to swing relative to the base body. Therefore, the base of the present invention allows the user to adjust the height of the base simply by turning the operating part, making adjustment more convenient.

[0022] Furthermore, by detachably installing the locking cap and the operating part together, the locking cap is magnetically attached to the base body, thereby matching the anti-slip structure with the anti-slip mating structure, which circumferentially fixes the operating part, thus preventing the operating part from rotating during the operation of the electrical equipment and ensuring the stability of the electrical equipment's posture during operation.

[0023] Furthermore, by filling the threaded hole with grease and tilting the threaded hole downwards when the roller abuts against the bearing surface, the grease in the threaded hole flows to the threaded post under its own gravity, thereby lubricating the thread between the threaded post and the threaded hole. This not only reduces the friction between the first driving component and the second driving component when they move relative to each other, but also reduces the probability of rust on the threaded parts of the first driving component and the second driving component.

[0024] Furthermore, by placing a portion of each drive unit on the front side of the base body, it facilitates the adjustment of each roller mounting bracket by operators (such as users), thus improving the user experience.

[0025] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0026] To more clearly illustrate the technical solution of the present invention, some embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that the same reference numerals may indicate the same or similar parts or components in different drawings; the drawings of the present invention are not necessarily drawn to scale.

[0027] In the attached image:

[0028] Figure 1 This is an exploded view of the base structure in the first embodiment of the present invention;

[0029] Figure 2 This is a first axonometric view of the base in the first embodiment of the present invention;

[0030] Figure 3 This is a second axonometric view of the base in the first embodiment of the present invention;

[0031] Figure 4 This is an isometric view of the roller-related parts in the first embodiment of the present invention;

[0032] Figure 5 This is an exploded view of the roller-related parts in the first embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the state when the roller is separated from the bearing surface in the first embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the state when the roller is in contact with the bearing surface in the first embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the locking structure of the driving device in the second embodiment of the present invention;

[0036] Figure 9 This is a partial structural schematic diagram of the base body in the third embodiment of the present invention;

[0037] Figure 10 This is a schematic diagram of the drive device in the fourth embodiment of the present invention;

[0038] Figure 11 This is a schematic diagram illustrating the effect of the electrical equipment in the fifth embodiment of the present invention. Detailed Implementation

[0039] Those skilled in the art should understand that the embodiments described below are merely a part of the embodiments of the present invention, and not all of the embodiments of the present invention. These partial embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those skilled in the art without creative effort should still fall within the scope of protection of the present invention.

[0040] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can also refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] Furthermore, it should be noted that in the description of this invention, the term "bearing surface" can be any feasible plane, inclined surface, curved surface, etc. For example, it can be a ground surface, tabletop, step surface, etc.

[0043] The following reference Figures 1 to 7 This will be used to describe in detail the movable base in the first embodiment of the present invention. Figure 1 This is an exploded view of the base structure in the first embodiment of the present invention. Figure 2This is a first axonometric view of the base in the first embodiment of the present invention. Figure 3 This is a second axonometric view of the base in the first embodiment of the present invention. Figure 4 This is an isometric view of the roller-related parts in the first embodiment of the present invention. Figure 5 This is an exploded view of the roller-related parts in the first embodiment of the present invention. Figure 6 This is a schematic diagram of the state when the roller is separated from the bearing surface in the first embodiment of the present invention. Figure 7 This is a schematic diagram of the state when the roller is in contact with the bearing surface in the first embodiment of the present invention.

[0044] like Figures 1 to 3 As shown, in the first embodiment of the present invention, the movable base 100 includes a base body 110, a roller mounting base 120, a roller 130, a drive device 140, and optional support legs 150. The roller mounting base 120 is pivotally mounted to the base body 110. The roller 130 is rotatably mounted to the roller mounting base 120. The drive device 140 is used to drive the roller mounting base 120 to swing relative to the base body 110, so that the roller 130 moves toward or away from the base body 110, thereby adjusting the base body 110 relative to the bearing surface 200 (e.g., ...). Figure 6 and Figure 7 The distance between the support leg 150 and the base body 110 is shown. The support leg 150 is threadedly connected to the base body 110. When the support leg 150 is screwed, it can move away from the base body 110 and can contact the bearing surface 200 (as shown). Figure 6 and Figure 7 (As shown) abuts against the base body 110 to lift it up, thereby disengaging the roller 130, which is close to the support leg 150, from the bearing surface 200 (as shown). Figure 6 and Figure 7 (As shown).

[0045] Continue reading Figures 1 to 3The base 100 has a roller mounting seat 120 at each of its four corners, and each roller mounting seat 120 corresponds to a roller 130 and a drive device 140. Furthermore, those skilled in the art can adjust the mounting position and number of the roller mounting seats 120 on the base 100, as well as the number of rollers 130 corresponding to each roller mounting seat 120, as needed. For example, three roller mounting seats 120 can be configured on the base 100, and these three roller mounting seats 120 can be arranged at the front, left rear, and right rear of the base 100, respectively. Further, those skilled in the art can also adjust the shape of the base 100 according to the distribution of the roller mounting seats 120. For example, if all the roller mounting seats 120 are distributed in a triangle, the shape of the base 100 is set to a triangle. If all the roller mounting seats 120 are distributed in a quadrilateral, the shape of the base 100 is set to a quadrilateral (rectangular). If all the roller mounts 120 are distributed in a pentagonal shape, then the shape of the base 100 is set to pentagonal.

[0046] like Figure 1 As shown, the base body 110 is provided with a rotating shaft slot 111 and a mounting cavity 112. The rotating shaft slot 111 is used to fix the roller mounting seat 120, and the mounting cavity 112 is used to install the drive device 140.

[0047] like Figures 4 to 7 As shown, the roller mounting base 120 has its rotating shaft 121 installed in the rotating shaft slot 111, and the rotating shaft 121 is approximately parallel to the horizontal plane so that the roller mounting base 120 can swing up and down around the rotating shaft.

[0048] Continue reading Figures 4 to 7 The drive unit 140 includes a first drive member 141 and a second drive member 142 driven together. The first drive member 141 is connected to the base body 110, and the second drive member 142 is connected to the roller mounting seat 120. The first drive member 141 and the second drive member 142 are configured to move relative to each other to drive the roller mounting seat 120 to swing relative to the base body 110.

[0049] like Figure 5 As shown, the first drive member 141 includes a threaded hole 1411 and an operating part 1412, and the second drive member 142 includes a threaded post 1421. The threaded hole 1411 mates with the threaded post 1421. The operating part 1412 is a post exposed on the front side of the base body 110. Figure 5As shown, the operating part 1412 is a hexagonal prism. Furthermore, those skilled in the art can, as needed, configure the operating part 1412 as any other feasible structure with a non-circular cross-section, such as a triangular prism, an elliptical prism, a quadrilateral prism, etc. Preferably, the first driving member 141 is a bolt with a threaded hole 1411.

[0050] In addition, those skilled in the art may, as needed, configure the operating part 1412 as a recessed groove exposed on the front side of the base body 110, and the cross-section of the recessed groove is non-circular, such as a hexagonal recessed groove, a triangular recessed groove, an elliptical recessed groove, a rectangular recessed groove, etc.

[0051] Continue reading Figure 5 The second drive member 142 is generally L-shaped. For ease of explanation, the section of the second drive member 142 with the threaded post 1421 is referred to as the threaded section, and the section of the second drive member 142 without the threaded post 1421 is referred to as the connecting section. The second drive member 142 is pivotally connected to the roller mounting base 120 through this connecting section.

[0052] like Figure 6 and Figure 7 As shown, when the operating part 1412 is operated, it drives the first driving member 141 to rotate, thereby causing the threaded post 1421 to move in the direction of extending into or out of the threaded hole 1411, so as to change the length of the first driving member 141 and the second driving member 142, thereby driving the roller mounting seat 120 to swing relative to the base body 110.

[0053] In addition, in other embodiments of the present invention, those skilled in the art may, as needed, provide a threaded post on the first driving member 141 and a threaded hole on the second driving member 142 that matches the threaded post.

[0054] Refer to 6 below. Figure 7 This section will provide a detailed explanation of the usage and working principle of the drive device 140.

[0055] When one of the rollers 130 of the base 100 is as follows Figure 6 When the part shown is separated from the bearing surface 200 and suspended in the air, the operator can screw the threaded post 1421 of the second drive member 142 into the threaded hole 1411 of the first drive member 141 by turning (specifically with the aid of a wrench) the operating part 1412, thereby shortening the length of the first drive member 141 and the second drive member 142, and thus making... Figure 6The roller mounting base 120 shown rotates counterclockwise. The rotation of the roller mounting base 120 causes the roller 130 to gradually approach the bearing surface 200 until it abuts against the bearing surface 200. As the operator continues to turn the operating part 1412, the roller mounting base 120 will gradually lift the portion of its corresponding base 100.

[0056] When one of the rollers 130 on the base 100 is higher than the corresponding portion on the base 100, the operator reverses the operation part 1412 to cause the threaded post 1421 of the second drive member 142 to unscrew the threaded hole 1411 of the first drive member 141, thereby increasing the length of the first drive member 141 and the second drive member 142, and thus... Figure 6 The roller mounting base 120 shown rotates clockwise. During this process, the roller 130 remains in contact with the bearing surface 200 due to the gravity of the base 100. When the pressure between the roller 130 and the bearing surface 200 is zero, the roller 130 can be separated from the bearing surface 200 by continuing to turn the operating part 1412.

[0057] It can be seen that the roller mounting base 120 is mainly forced to swing by the pulling force of the drive device 140 and the gravity of the base 100.

[0058] Furthermore, although not shown in the figure, to facilitate the relative movement between the first driving member 141 and the second driving member 142, those skilled in the art may, as needed, fill the threaded hole 1411 with grease. When the roller 130 abuts against the bearing surface 200, the threaded hole 1411 is tilted downwards, allowing the grease within the threaded hole 1411 to flow to the threaded post 1421 under its own gravity, thereby lubricating the threads between the threaded post 1421 and the threaded hole 1411. Those skilled in the art will understand that, due to the viscosity of grease, the meshing threads of the first driving member 141 and the second driving member 142 will adhere to grease during the relative movement of the two members.

[0059] Furthermore, from Figure 6 and Figure 7 As can be seen, during the process of the roller mounting base 120 and roller 130 lifting the base body 110, the torque between roller 130 and roller mounting base 120 gradually decreases. This allows the operator to easily turn the operating part 1412 even when the base 100 has a heavy object (such as a refrigerator or washing machine). In particular, the gradually decreasing torque can counteract the acceleration of the object rising on the base 100.

[0060] The torque between the roller 130 and the roller mounting base 120 refers to the product of "the force exerted by the base 100 and the objects on it on the axis of rotation of the roller 130" and "the horizontal distance between the axis of rotation 121 and the axis of rotation of the roller 130".

[0061] Meanwhile, the meshing threads between the first driving member 141 and the second driving member 142 act as a lever, allowing the operator to turn the operating part 1412 with minimal force, thereby lifting the base body 110. Therefore, the base 100 of this invention achieves secondary labor-saving, improving the user experience.

[0062] Go back and continue reading Figures 1 to 3 The base 100 includes two legs 150, which are disposed on the front side of the base 100 and each corresponds to a roller mounting seat 120. Furthermore, those skilled in the art can also provide any other feasible number of legs 150 as needed, such as one, three, or four.

[0063] In the first embodiment of the present invention, when the base 100 needs to be moved, the support leg 150 is turned in the forward direction to separate the support leg 150 from the bearing surface 200, so that the roller 130 near the support leg 150 abuts against the bearing surface 200. When the base 100 does not need to be moved, the support leg 150 is turned in the reverse direction to abut against the bearing surface 200, lifting the base body 110, thereby disengaging the roller 130 near the support leg 150 from the bearing surface 200.

[0064] The following reference Figure 1 , Figures 5 to 7 Here is a brief explanation of the assembly process of base 100.

[0065] During assembly of the base 100, the roller mounting base 120 and the roller 130 are first installed together. Then, the roller mounting base 120 is installed from below the base body 110 so that it is inserted into the downward-facing shaft slot 111. Next, the second drive member 142 is inserted into the roller mounting base 120 through the mounting cavity 112, and the first drive member 141 is passed through the hole provided on the front side of the base body 110, and the first drive member 141 and the second drive member 142 are threaded together. Finally, the support leg 150 is screwed into the threaded hole (not shown in the figure) on the base body 110.

[0066] It should be noted that the aforementioned assembly sequence of the base 100 is not fixed. Those skilled in the art can adjust the assembly sequence of the components of the base 100 according to the actual situation.

[0067] Based on the foregoing description, those skilled in the art will understand that in the first embodiment of the present invention, the roller mounting base 120 is driven to swing by the driving device 140, so that the corresponding rollers 130 can move closer to or further away from the base body 110, thereby achieving height adjustment of each roller 130. Therefore, the base 100 of the present invention can not only be moved by the rollers 130, but also the distance between the base body 110 and the bearing surface 200 can be adjusted by the driving device 140, thereby preventing the base 100 from tilting.

[0068] Furthermore, in the first embodiment of the present invention, the provision of the support leg 150 can also prevent the base 100 from moving and fix the base 100.

[0069] Furthermore, by placing the operating parts 1412 of all drive units 140 on the front side of the base 100, it is easier for operators to adjust the drive units 140 and optimizes the user experience.

[0070] The following reference Figure 8 The base 100 in the second embodiment of the present invention will now be described.

[0071] like Figure 8 As shown, compared to the first embodiment, the base 100 in the second embodiment of the present invention further includes a locking cap 160. The locking cap 160 is used to lock the drive device 140 to prevent the drive device 140 from loosening due to vibration, thereby causing the roller mounting base 120 to swing. Specifically, the locking cap 160 is provided with a magnet 161 and an anti-slip structure 162. The anti-slip structure 162 is provided on the side of the locking cap 160 facing the base body 110. Furthermore, the locking cap 160 can be engaged with the operating part 1412 of the drive device 140. For example, the locking cap 160 can be engaged by… Figure 8 The hexagonal hole structure shown is similar to Figure 5 and Figure 6 The hexagonal prism-shaped operating part 1412 shown is fitted together.

[0072] Continue reading Figure 8 Corresponding to the locking cap 160, the base body 110 is provided with an anti-slip mating structure 113, which matches the anti-slip structure 162. Optionally, both the anti-slip structure 162 and the anti-slip mating structure 113 have anti-slip textures. The portion of the base body 110 corresponding to the locking cap 160 is designed to be attracted by a magnet 161. For example, a metal plate is provided at the position corresponding to the locking cap 160 on the base body 110.

[0073] In the assembled state, the locking cap 160 and the operating part 1412 are detachably installed together. The locking cap 160 is attracted to the base body 110 by the magnet 161, thereby matching the anti-slip structure 162 with the anti-slip mating structure 113 to prevent the first drive member 141 from loosening.

[0074] When the drive unit 140 needs to be adjusted, the operator only needs to remove the locking cap 160 from the operating part 1412.

[0075] Based on the foregoing description, those skilled in the art will understand that in the second embodiment of the present invention, the base 100 can lock the drive device 140 by means of the locking cap 160, preventing the drive device 140 from causing the roller mounting seat 120 to swing abnormally, thereby ensuring the stability of the base 100 during long-term use.

[0076] The following reference Figure 9 The base 100 in the third embodiment of the present invention will now be described.

[0077] like Figure 9 As shown, compared with the first and second embodiments, the structure of the base body 110 has been changed in the third embodiment of the present invention. Specifically, the base body 110 replaces the mounting cavity 112 with an avoidance structure 114.

[0078] During the assembly of the base 100, the roller mounting seat 120 similarly allows the rotating shaft 121 to be inserted into the rotating shaft slot 111 from the bottom side of the base body 110. Then, the operator inserts the first drive member 141 into the roller mounting seat 120 from the clearance structure 114.

[0079] from Figure 9 and Figure 1 As can be seen from the third embodiment of the present invention, the avoidance structure 114 enables the installation process of the first driving component 141 to be visualized, thereby improving the assembly efficiency of the operator.

[0080] The following reference Figure 10 The base 100 in the fourth embodiment of the present invention will now be described.

[0081] like Figure 10 As shown, compared with the first, second, and third embodiments, in the fourth embodiment of the present invention, the driving device 140 includes a lead screw 143 and a lead screw nut 144 that engage. The lead screw 143 is circumferentially rotatable and axially fixedly connected to the base body 110, and the lead screw nut 144 is pivotally connected to the roller mounting seat 120. Further, the lead screw 143 includes a lead screw section 1431 that engages with the lead screw nut 144 and an operating structure 1432 exposed on the outside of the base body 110.

[0082] When the operating structure 1432 is operated, the lead screw 143 drives the lead screw nut 144 to move, so that the roller mounting seat 120 swings relative to the base body 110.

[0083] Furthermore, in a fifth embodiment of the present invention, an electrical device is also provided. See below for further details. Figure 11 The electrical device of the present invention will now be described.

[0084] like Figure 11 As shown, in the fifth embodiment of the present invention, the electrical device 300 includes a device body 310 and a base 100, which can be the base described in any of the preceding embodiments.

[0085] Furthermore, the device body 310 and the base 100 can be fixedly connected as a whole, or they can be fixed together in a detachable manner.

[0086] Alternatively, the electrical appliance 300 may be a refrigerator, freezer, freezer, or garment processing equipment. The garment processing equipment may be a washing machine, dryer, or washer-dryer combo.

[0087] Based on the foregoing description, those skilled in the art will understand that in the fifth embodiment of the present invention, the electrical device 300 can not only be moved with the support of the roller 130, but also the distance between it and the bearing surface 200 can be adjusted by the drive device 140, thereby preventing the electrical device 300 from tilting.

[0088] The technical solutions of the present invention have been described in conjunction with several embodiments above. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Without departing from the technical principles of the present invention, those skilled in the art can disassemble and combine the technical solutions in the above embodiments, and can also make equivalent changes or substitutions to related technical features. Any changes, equivalent substitutions, improvements, etc., made within the technical concept and / or technical principles of the present invention will fall within the scope of protection of the present invention.

Claims

1. A movable base suitable for a refrigerator, said base comprising: Base body; A roller mounting base, which is pivotally mounted to the base body; A roller, which is rotatably mounted on the roller mounting base; A driving device is used to drive the roller mounting base to swing relative to the base body, so that the roller moves toward or away from the base body, thereby adjusting the distance between the base body and the bearing surface; The driving device includes a first driving member and a second driving member; the first driving member is rotatably connected to the base body and includes an operating part exposed on the front side of the base body; the second driving member is pivotally connected to the roller mounting seat; one of the first driving member and the second driving member has a threaded hole, and the other of the first driving member and the second driving member has a threaded post, the threaded post matching the threaded hole; when the operating part is operated, it drives the first driving member to rotate, thereby causing the threaded post to move in the direction of extending into or out of the threaded hole, so as to change the length of the first driving member and the second driving member, thereby driving the roller mounting seat to swing relative to the base body.

2. The movable base according to claim 1, wherein, The operating part is a column exposed on the front side of the base body, and the cross-section of the column is non-circular.

3. The movable base according to claim 1, wherein, The operating part is a recessed groove exposed on the front side of the base body, and the cross-section of the recessed groove is non-circular.

4. The movable base according to claim 1, wherein, The base also includes a locking cap that fits into the operating part, and the locking cap is provided with a magnet and an anti-slip structure; The base body is provided with an anti-slip mating structure; The locking cap is detachably mounted to the operating part. The locking cap is attracted to the base body by the magnet, thereby matching the anti-slip structure with the anti-slip mating structure to prevent the first driving member from loosening.

5. The movable base according to claim 1, wherein, The threaded hole is filled with grease. The first driving member and the second driving member are configured such that when the roller abuts against the bearing surface, the threaded hole is tilted downward, so that the grease in the threaded hole flows to the threaded post under its own gravity, thereby lubricating the thread between the threaded post and the threaded hole.

6. The movable base according to any one of claims 1 to 5, wherein, The base includes at least three roller mounting seats, and at least one roller is mounted on each roller mounting seat; At least three of the roller mounting seats are partially disposed on the front side of the base body, and at least three of the roller mounting seats are partially disposed on the rear side of the base body.

7. The movable base according to claim 6, wherein, Each of the roller mounting bases corresponds to a driving device, and a portion of each driving device is located on the front side of the base body for operation by the operator.

8. The movable base according to claim 6, wherein, The base also includes at least one support leg, which is threadedly connected to the base body. When the support leg is screwed, it can move away from the base body and abut against the bearing surface to lift the base body, thereby disengaging the roller close to the support leg from the bearing surface.

9. An electrical appliance comprising a base as described in any one of claims 1 to 8, wherein the electrical appliance is a refrigerator, freezer, freezer, or clothing handling device.

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