Rotatable display screen and household appliance

Abstract

The utility model discloses a rotatable display screen and a household appliance. The rotatable display screen comprises a mounting groove; the display screen body is positioned in the mounting groove in a manner that the inclination angle can be adjusted; the display screen body is provided with a hinged end and a movable end opposite to the hinged end, and a limiting structure is arranged between the movable end and the mounting groove; the mounting groove is provided with a side plate, and the limiting structure is provided with a top column which is arranged on the display screen body and extends towards the side plate. Through movement of the movable end, the display screen body rotates around the rotating shaft, and the inclination angle of the display screen body can be changed; and by arranging the limiting structure, the pushing hand feeling is increased, the state of the display screen body is judged, and the stability in the initial state is improved. The jacking columns extend towards the side plates and are used for achieving limitation between the jacking columns and the side plates.

Description

Technical Field

[0001] The utility model belongs to the technical field of household appliances, and in particular relates to a rotatable display screen and a household appliance with the rotatable display screen. Background Art

[0002] Dishwashers are automated devices that automatically clean tableware such as bowls, chopsticks, plates, and dishes. As people's living standards improve, dishwashers are also used by more and more families. They can reduce the labor intensity of users, improve work efficiency, promote cleanliness and hygiene, and meet the user's comfortable life experience. The working principle of a dishwasher is to use a motor to drive a washing pump to spray detergent from a sprayer under a certain pressure to form a dense hot water flow in a three-dimensional direction. The sprayer rotates due to the reaction force of the water spray, so that the detergent is evenly sprayed onto the tableware in the dishwasher, and the tableware is sprayed and rinsed in a three-dimensional manner.

[0003] At present, the display screen of the dishwasher is generally fastened to the door body by screws or buckles to form an integrated complete structure, and the display screen is generally installed vertically. When users use the dishwasher, they often need to bend down to better operate the display screen; and the height difference of family members is large. When different members operate, the optimal tilt angle of the display screen is different. Therefore, the current display screen cannot meet the needs of all family members and does not conform to ergonomics.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In view of the above-mentioned problems in the prior art, the utility model proposes a rotatable display screen, which can realize the change of the tilt angle of the rotatable display screen by moving the movable end, which is beneficial for the user to watch the display screen at a suitable tilt angle; and by setting a limit structure, when the rotatable display screen leaves or resets to the initial state, a certain thrust is required to overcome the resistance brought by the limit structure, which is beneficial to increase the pushing feel, and is used to judge the state of the rotatable display screen, and is also beneficial to ensure the stability when it is in the initial state.

[0006] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0007] A rotatable display screen, comprising:

[0008] Mounting slots;

[0009] A display screen body, which can be adjusted in tilt angle and is located in the mounting groove;

[0010] The display screen body has a hinged end and a movable end arranged opposite to the hinged end, and a limiting structure for limiting the display screen body to be in an initial state is provided between the movable end and the mounting groove;

[0011] The mounting groove has a side plate, and the limiting structure has a top column which is arranged on the display screen body and extends toward the side plate.

[0012] In some embodiments of the present application, the limiting structure further has an elastic member for pushing the top column to move toward the side plate.

[0013] In some embodiments of the present application, when the display screen body leaves the position of the initial state, the movable end moves toward a direction approaching the center of the installation slot.

[0014] In some embodiments of the present application, a limiting groove for installing the top column is provided on the display screen body, and the top column is movably located in the limiting groove.

[0015] In some embodiments of the present application, the limiting groove is arranged to protrude backward along the display screen body.

[0016] In some embodiments of the present application, the lower end of the display screen body is a hinged end and the upper end is a movable end.

[0017] In some embodiments of the present application, the top column abuts against the side panel.

[0018] In some embodiments of the present application, the limiting structure further has a limiting protrusion which is provided on the side plate and protrudes inward, and the limiting protrusion is used to block the top column.

[0019] In some embodiments of the present application, the limiting protrusion has a first arc-shaped slope whose protrusion height gradually increases in the direction close to the bottom of the installation groove, and a second arc-shaped slope whose protrusion height gradually decreases in the direction close to the bottom of the installation groove.

[0020] In some embodiments of the present application, the limiting protrusion further has an arc-shaped wave crest connected between the first arc-shaped slope and the second arc-shaped slope.

[0021] In some embodiments of the present application, an extension surface of the arc-shaped wave crest intersects with a rotation axis of the display screen body.

[0022] In some embodiments of the present application, the limiting protrusion is extended toward the rotation axis direction of the display screen body.

[0023] In some embodiments of the present application, the first arc-shaped slope and the second arc-shaped slope are symmetrically arranged.

[0024] In some embodiments of the present application, a stop plate is further provided at the front end of the side plate for stopping the movable end from moving forward in the initial state.

[0025] In some embodiments of the present application, the moving direction of the top column is arranged parallel to the rotation axis of the display screen body.

[0026] In some embodiments of the present application, the top column has a column body and a hemispherical convex end connected to one end of the column body close to the side plate.

[0027] Based on the above-mentioned rotatable display screen, the utility model also provides a household appliance with the above-mentioned rotatable display screen. By moving the movable end, the tilt angle of the rotatable display screen can be changed, which is beneficial for the user to watch the display screen at a suitable tilt angle; and by setting a limiting structure, when the rotatable display screen leaves or resets to the initial state, a certain thrust is required to overcome the resistance brought by the limiting structure, which is beneficial to increase the pushing feel, and is used to judge the state of the rotatable display screen, and is also beneficial to ensure stability when it is in the initial state.

[0028] A household appliance comprises a box body, on which the above-mentioned rotatable display screen is arranged.

[0029] Compared with the prior art, the advantages and positive effects of the utility model are: by moving the movable end, the display screen body rotates around the rotation axis, and the tilt angle of the display screen body can be changed, which is beneficial for users to watch the display screen at a suitable tilt angle; and by setting a limit structure, when the display screen body leaves or resets to the initial state, a certain thrust is required to overcome the resistance brought by the limit structure, which is beneficial to increase the push feel, and can be used to judge the state of the display screen body, and is also beneficial to ensure the stability in the initial state. By setting a top column, it extends toward the side panel direction to achieve the limitation between the side panel.

[0030] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A structural schematic diagram of an embodiment of a rotatable display screen proposed by the utility model;

[0033] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of the A area in the middle;

[0034] Figure 3 for Figure 1 A schematic cross-sectional view of the structure;

[0035] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of the middle B area;

[0036] Figure 5 for Figure 4 An enlarged structural diagram of the middle top column;

[0037] Figure 6 A structural schematic diagram of the rear view angle of the display screen body;

[0038] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of the middle C region;

[0039] Figure 8 for Figure 1 A schematic diagram of the structure of the middle installation slot;

[0040] Fig. 9 for Figure 8 Schematic diagram of the enlarged structure of the D region in the middle;

[0041] Wherein, the display screen 100 can be rotated;

[0042] Mounting groove 10; side plate 11; limiting protrusion 12; first arc slope 121; arc crest 122; second arc slope 123; stop plate 13;

[0043] Display screen body 20 ; hinge end 21 ; movable end 22 ; limit slot 24 ; top column 25 ; column 251 ; elastic member 26 . DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0045] In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the positional relationships shown in the accompanying drawings, with the direction closer to the center of the mounting slot being "inside" and the opposite being "outside". The terms are only for the convenience of describing the present utility model 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, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials. Embodiment 1

[0049] See also Figure 1-Figure 9 , is an embodiment of a rotatable display screen proposed by the utility model, a rotatable display screen 100 comprises: a mounting slot 10 and a display screen body 20, the display screen body 20 is located in the mounting slot 10 with an adjustable tilt angle; the display screen body 20 has a hinged end 21, and a movable end 22 arranged opposite to the hinged end 21. A limiting structure for limiting the display screen body 20 to be in an initial state is provided between the movable end 22 and the mounting slot 10; when pushing the movable end 22 to move and leave the position of the initial state, the torque required to push the movable end 22 is greater than the torque brought by the limiting structure, so that the user can clearly perceive that the rotatable display screen 100 has left the position of the initial state; and the rotatable display screen 100 is prevented from rotating and moving after being accidentally touched in the initial state, so that the rotatable display screen 100 can be relatively stable in the initial state.

[0050] The mounting groove 10 has side panels 11 on the left and right sides, and the display screen body 20 is arranged at the open end of the mounting groove 10. The limiting structure has a top column 25 arranged on the display screen body 20, and the top column 25 extends toward the side panel 11; when the movable end 22 is pushed, friction is generated between the limiting structures to limit the movement of the movable end 22; by setting the extension of the top column 25, the limiting structures are close to each other. Through the movement of the movable end 22, the display screen body 20 is rotated around the rotation axis, and the tilt angle of the display screen body 20 can be changed, which is beneficial for users to watch the display screen at a suitable tilt angle; and by setting the limiting structure, when the display screen body 20 leaves or resets to the initial state, a certain thrust is required to overcome the resistance brought by the limiting structure, which is beneficial to increase the feel of pushing, and can be used to judge the state of the display screen body 20, and is also beneficial to ensure the stability when it is in the initial state. By setting the top column 25, it is used to achieve the limitation between the side panel 11.

[0051] In some embodiments of the present application, the mounting groove 10 can be set in front of the household appliance housing, and the hinged end 21 and the movable end 22 are arranged relative to each other in the up-down direction; or the mounting groove 10 can also be set on the top surface of the household appliance housing, and the hinged end 21 and the movable end 22 are arranged relative to each other in the front-back direction. When the display screen body 20 leaves the position of the initial state, the movable end 22 moves toward the center of the mounting groove 10. If the initial position of the display screen body 20 is set in the up-down direction, the hinged end 21 is located at the lower end of the display screen body 20, and the movable end 22 is located at the upper end of the display screen body 20. If the initial position of the display screen body 20 is set in the front-back direction, the hinged end 21 is located at the rear end of the display screen body 20, and the movable end 22 is located at the front end of the display screen body 20.

[0052] In some embodiments of the present application, the limiting structure also has an elastic member 26 for pushing the top column 25 to move toward the side plate 11. By providing the elastic member 26, a driving force is given to the top column 25 to move toward the side plate 11, which is beneficial to ensure that the top column 25 applies pressure to the side plate 11, so that friction is generated when the movable end 22 moves.

[0053] In some embodiments of the present application, a limiting groove 24 for installing a top column 25 is provided on the display screen body 20, and the top column 25 is movably located in the limiting groove 24. The moving direction of the top column 25 is arranged parallel to the rotation axis of the display screen body 20. The elastic member 26 is also arranged in the limiting groove 24. Preferably, the limiting groove 24 is arranged to bulge backward along the display screen body 20. In other embodiments, the limiting groove 24 can also be opened in the display screen body 20.

[0054] In some embodiments of the present application, the limiting structure further has a limiting protrusion 12 provided on the side plate 11, and the limiting protrusion 12 is used to block the top column 25, and the limiting protrusion 12 protrudes inward. When the display screen body 20 leaves the position of the initial state or returns to the position of the initial state, the top column 25 needs to pass through the limiting protrusion 12 as the movable end 22 rotates and moves. When the movable end 22 is pushed to make the display screen body 20 leave the position of the initial state, the top column 25 is squeezed by the limiting protrusion 12 and moves away from the side plate 11. There is relative movement between the top column 25 and the limiting protrusion 12, generating friction resistance and providing a torque to prevent the display screen body 20 from rotating; when the torque of the driving force relative to the rotation axis of the display screen body 20 is greater than the resistance torque provided by the limiting structure, the display screen body 20 rotates and the top column 25 passes through the limiting protrusion 12.

[0055] In some embodiments of the present application, the limiting protrusion 12 has a first arc slope 121 whose protrusion height gradually increases in the direction close to the bottom of the installation groove 10, and a second arc slope 123 whose protrusion height gradually decreases in the direction close to the bottom of the installation groove 10. By providing the first arc slope 121, it is beneficial that when the display screen body 20 leaves the position of the initial state, as the movable end 22 moves, the top column 25 moves along the first arc slope 121, and the top column 25 is gradually squeezed in the direction away from the side plate 11, so that the elastic member 26 is compressed; and then when the top column 25 passes through the second arc slope 123, under the push of the elastic member 26, the top column 25 gradually extends toward the side plate 11 to achieve reset.

[0056] In some embodiments of the present application, the limiting protrusion 12 further has an arc-shaped crest 123 connected between the first arc-shaped slope 121 and the second arc-shaped slope 122; because the top column 25 rotates and moves with the display screen body 20, it is preferably arranged that the extension surface of the arc-shaped crest 123 intersects with the rotation axis of the display screen body 20, or in other words, the limiting protrusion 12 is extended in the direction of the rotation axis of the display screen body 20. It is preferably arranged that the first arc-shaped slope 121 and the second arc-shaped slope 122 are symmetrically arranged.

[0057] In some embodiments of the present application, the top column 25 can be set to abut against the side plate 11, and the length and strength of the elastic member 26 can be set so that the elastic member 26 gives a set thrust to the side plate 11. A reset torsion spring is provided at the hinge end 21, and after the display screen body 20 rotates and moves, the display screen body 20 can be rotated and reset under the action of the reset torsion spring.

[0058] In some embodiments of the present application, a stop plate 13 is provided at the front end of the side panel 11 for stopping the movable end 22 from moving forward in the initial position. The stop plate 13 is fixed on the side panel 11 and is located on the front side of the display screen body 20.

[0059] In some embodiments of the present application, the top column 25 has a column body 251 and a hemispherical convex end 252 connected to one end of the column body 251 near the side plate 11. By providing the convex end 252, the convex end 252 contacts the limiting protrusion 12, which is conducive to the top column 25 passing through the limiting protrusion 12. The top column 25 also has an extension edge 253 extending radially outward along the column body 251, and the extension edge 253 is matched with the inner circle of the limiting groove 24. The column body 251 is a cylinder. Embodiment 2

[0060] In this embodiment, a household appliance may be a dishwasher, a washing machine, a clothes dryer, a refrigerator, etc. A household appliance has a housing, and the above-mentioned rotatable display screen 100 is arranged on the housing.

[0061] See also Figure 1-Figure 9As shown, a rotatable display screen 100 comprises: a mounting slot 10 and a display screen body 20, wherein the display screen body 20 is located in the mounting slot 10 and can adjust the tilt angle; the display screen body 20 has a hinge end 21 and a movable end 22 arranged opposite to the hinge end 21. A limiting structure for limiting the display screen body 20 to be in an initial state is provided between the movable end 22 and the mounting slot 10; when the movable end 22 is pushed to move and leave the position of the initial state, the torque required to push the movable end 22 is greater than the torque brought by the limiting structure, so that the user can clearly perceive that the rotatable display screen 100 has left the position of the initial state; and the rotatable display screen 100 is prevented from rotating and moving after being accidentally touched in the initial state, so that the rotatable display screen 100 can be relatively stable in the initial state.

[0062] The mounting groove 10 has side panels 11 on the left and right sides, and the display screen body 20 is arranged at the open end of the mounting groove 10. The limiting structure has a top column 25 arranged on the display screen body 20, and the top column 25 extends toward the side panel 11; when the movable end 22 is pushed, friction is generated between the limiting structures to limit the movement of the movable end 22; by setting the extension of the top column 25, the limiting structures are close to each other. Through the movement of the movable end 22, the display screen body 20 is rotated around the rotation axis, and the tilt angle of the display screen body 20 can be changed, which is beneficial for users to watch the display screen at a suitable tilt angle; and by setting the limiting structure, when the display screen body 20 leaves or resets to the initial state, a certain thrust is required to overcome the resistance brought by the limiting structure, which is beneficial to increase the feel of pushing, and can be used to judge the state of the display screen body 20, and is also beneficial to ensure the stability when it is in the initial state. By setting the top column 25, it is used to achieve the limitation between the side panel 11.

[0063] In some embodiments of the present application, the mounting groove 10 can be set in front of the household appliance housing, and the hinged end 21 and the movable end 22 are arranged relative to each other in the up-down direction; or the mounting groove 10 can also be set on the top surface of the household appliance housing, and the hinged end 21 and the movable end 22 are arranged relative to each other in the front-back direction. When the display screen body 20 leaves the position of the initial state, the movable end 22 moves toward the center of the mounting groove 10. If the initial position of the display screen body 20 is set in the up-down direction, the hinged end 21 is located at the lower end of the display screen body 20, and the movable end 22 is located at the upper end of the display screen body 20. If the initial position of the display screen body 20 is set in the front-back direction, the hinged end 21 is located at the rear end of the display screen body 20, and the movable end 22 is located at the front end of the display screen body 20.

[0064] In some embodiments of the present application, the limiting structure also has an elastic member 26 for pushing the top column 25 to move toward the side plate 11. By providing the elastic member 26, a driving force is given to the top column 25 to move toward the side plate 11, which is beneficial to ensure that the top column 25 applies pressure to the side plate 11, so that friction is generated when the movable end 22 moves.

[0065] In some embodiments of the present application, a limiting groove 24 for installing a top column 25 is provided on the display screen body 20, and the top column 25 is movably located in the limiting groove 24. The moving direction of the top column 25 is arranged parallel to the rotation axis of the display screen body 20. The elastic member 26 is also arranged in the limiting groove 24. Preferably, the limiting groove 24 is arranged to bulge backward along the display screen body 20. In other embodiments, the limiting groove 24 can also be opened in the display screen body 20.

[0066] In some embodiments of the present application, the limiting structure further has a limiting protrusion 12 provided on the side plate 11, and the limiting protrusion 12 is used to block the top column 25, and the limiting protrusion 12 protrudes inward. When the display screen body 20 leaves the position of the initial state or returns to the position of the initial state, the top column 25 needs to pass through the limiting protrusion 12 as the movable end 22 rotates and moves. When the movable end 22 is pushed to make the display screen body 20 leave the position of the initial state, the top column 25 is squeezed by the limiting protrusion 12 and moves away from the side plate 11. There is relative movement between the top column 25 and the limiting protrusion 12, generating friction resistance and providing a torque to prevent the display screen body 20 from rotating; when the torque of the driving force relative to the rotation axis of the display screen body 20 is greater than the resistance torque provided by the limiting structure, the display screen body 20 rotates and the top column 25 passes through the limiting protrusion 12.

[0067] In some embodiments of the present application, the limiting protrusion 12 has a first arc slope 121 whose protrusion height gradually increases in the direction close to the bottom of the installation groove 10, and a second arc slope 123 whose protrusion height gradually decreases in the direction close to the bottom of the installation groove 10. By providing the first arc slope 121, it is beneficial that when the display screen body 20 leaves the position of the initial state, as the movable end 22 moves, the top column 25 moves along the first arc slope 121, and the top column 25 is gradually squeezed in the direction away from the side plate 11, so that the elastic member 26 is compressed; and then when the top column 25 passes through the second arc slope 123, under the push of the elastic member 26, the top column 25 gradually extends toward the side plate 11 to achieve reset.

[0068] In some embodiments of the present application, the limiting protrusion 12 further has an arc-shaped crest 123 connected between the first arc-shaped slope 121 and the second arc-shaped slope 122; because the top column 25 rotates and moves with the display screen body 20, it is preferably arranged that the extension surface of the arc-shaped crest 123 intersects with the rotation axis of the display screen body 20, or in other words, the limiting protrusion 12 is extended in the direction of the rotation axis of the display screen body 20. It is preferably arranged that the first arc-shaped slope 121 and the second arc-shaped slope 122 are symmetrically arranged.

[0069] In some embodiments of the present application, the top column 25 can be set to abut against the side plate 11, and the length and strength of the elastic member 26 can be set so that the elastic member 26 gives a set thrust to the side plate 11. A reset torsion spring is provided at the hinge end 21, and after the display screen body 20 rotates and moves, the display screen body 20 can be rotated and reset under the action of the reset torsion spring.

[0070] In some embodiments of the present application, a stop plate 13 is provided at the front end of the side panel 11 for stopping the movable end 22 from moving forward in the initial position. The stop plate 13 is fixed on the side panel 11 and is located on the front side of the display screen body 20.

[0071] In some embodiments of the present application, the top column 25 has a column 251 and a hemispherical protrusion 252 connected to one end of the column 251 near the side plate 11. By providing the protrusion 252, the protrusion 252 contacts the limiting protrusion 12, which is conducive to the top column 25 passing through the limiting protrusion 12.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A rotatable display screen, characterized in that: include: Mounting slots; A display screen body, which can be adjusted in tilt angle and is located in the mounting groove; The display screen body has a hinged end and a movable end arranged opposite to the hinged end, and a limiting structure for limiting the display screen body to be in an initial state is provided between the movable end and the mounting groove; The mounting groove has a side plate, and the limiting structure has a top column which is arranged on the display screen body and extends toward the side plate.

2. The rotatable display screen according to claim 1, characterized in that: The limiting structure also has an elastic member for pushing the top column to move toward the side plate.

3. The rotatable display screen according to claim 1, characterized in that: A limiting groove for installing the top column is provided on the display screen body, and the top column is movably located in the limiting groove.

4. The rotatable display screen according to any one of claims 1 to 3, characterized in that: The limiting structure also has a limiting protrusion which is arranged on the side plate and protrudes inward, and the limiting protrusion is used to block the top column.

5. The rotatable display screen according to claim 4, characterized in that: The limiting protrusion has a first arc-shaped slope whose protrusion height gradually increases in the direction close to the groove bottom of the installation groove, and a second arc-shaped slope whose protrusion height gradually decreases in the direction close to the groove bottom of the installation groove.

6. The rotatable display screen according to claim 5, characterized in that: The limiting protrusion also has an arc-shaped wave crest connected between the first arc-shaped slope and the second arc-shaped slope; an extension surface of the arc-shaped wave crest intersects with the rotation axis of the display screen body.

7. The rotatable display screen according to any one of claims 1 to 3, characterized in that: The lower end of the display screen body is a hinged end, and the upper end is a movable end; a stop plate for stopping the movable end from moving forward in an initial state is also provided at the front end of the side plate.

8. The rotatable display screen according to any one of claims 1 to 3, characterized in that: The top column comprises a column body and a hemispherical convex end connected to one end of the column body close to the side plate.

9. The rotatable display screen according to any one of claims 1 to 3, characterized in that: The moving direction of the top column is arranged parallel to the rotation axis of the display screen body.

10. A household appliance, characterized in that: A box body is provided, and a rotatable display screen according to any one of claims 1 to 9 is arranged on the box body.

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